Mobile equipment communication cable laying system and cable tension monitoring device

Abstract

The purpose of this invention is to address the technical problems in existing communication cable laying technology, where cable stacking easily occurs when the cable release speed is greater than the moving speed of the mobile equipment, and cable snagging and breakage easily when it is less than the moving speed of the mobile equipment. This invention provides a communication cable laying system for mobile equipment and a cable tension monitoring device used therein. This cable tension monitoring device for the communication cable laying system for mobile equipment includes a swing arm, a swing arm guide wheel, and a swing arm amplitude detector. The upper end of the swing arm is mounted on one side surface of the swing arm frame via a hinge shaft. The swing arm guide wheel is located below the hinge shaft and rotatably connected to the swing arm. The cable tension monitoring device for the communication cable laying system for mobile equipment using this invention can achieve online detection of cable tension. It has a simple structure, and when an alarm is received, the system can be stopped for inspection and adjustment to prevent cable stacking or excessive cable tightness.

Description

Technical Field

[0001] This utility model relates to the field of communication cable laying technology for port mobile equipment, and in particular to a communication cable laying system for mobile equipment and a cable tension monitoring device used thereon. Background Technology

[0002] When laying communication cables for mobile equipment, the cables are wound on a reel located on the equipment. During laying, the equipment moves the reel while simultaneously releasing or rewinding the cable. This process requires a coordination between the cable release speed and the equipment's movement speed. Theoretically, the equipment's speed should match the cable release / rewinding speed, which is theoretically sound. However, in practice, achieving this consistency is difficult. For example, when releasing the cable, various factors can cause it to slack when the equipment's speed is less than the cable's release speed. Since communication cables are typically less than 10 millimeters in diameter and very light, when the speed difference reaches a certain value, the cable stacks along the route, becoming uneven and prone to tangling. When rewinding, the stacked areas can easily become entangled and jammed, requiring machine stoppage for reorganization, disrupting normal operations and reducing production efficiency. Furthermore, frequent manual inspections are necessary, increasing worker workload. When the moving speed of the equipment exceeds the release speed of the cable, the cable may get caught in the air and fail to fall onto the running line during the movement of the equipment, posing a safety hazard or even causing the cable to break and affecting normal production. Utility Model Content

[0003] The purpose of this utility model is to address the technical problems in the existing technology where, when laying communication cables, if the cable release speed is greater than the moving speed of the mobile equipment, the cables are prone to stacking, and if the release speed is less than the moving speed of the mobile equipment, the cables are prone to getting caught and breaking. This utility model provides a communication cable laying system for mobile equipment and a cable tension monitoring device.

[0004] The technical solution to the technical problem solved by this utility model is as follows:

[0005] A cable tension monitoring device for a communication cable laying system for mobile equipment includes a swing arm, a swing arm guide wheel, and a swing arm amplitude detector. The upper end of the swing arm is mounted on one side surface of the swing arm frame via a hinge shaft. The swing arm guide wheel is located below the hinge shaft and is rotatably connected to the swing arm. The swing arm swings under the tension of the cable due to the interaction between the swing arm guide wheel and the cable. The swing arm amplitude detector detects the swing amplitude of the swing arm. When the swing amplitude of the swing arm exceeds a set range, the swing arm amplitude detector uploads an alarm message.

[0006] It also includes a guide wheel connecting rod fixedly connected to the swing arm, and the swing arm guide wheel is provided at least at one end of the guide wheel connecting rod, and the swing arm guide wheel is rotatably connected to the guide wheel connecting rod;

[0007] It includes two or more guide wheel links, each guide wheel link arranged vertically along the length of the swing arm. The distance between the swing arm guide wheel on the lower guide wheel link and the swing arm increases sequentially. The swing arm guide wheels at the same end of the guide wheel link form a set of swing arm guide wheels. When swing arm guide wheels are set at both ends of the guide wheel link, the two sets of swing arm guide wheels at both ends of the guide wheel link are symmetrically arranged, and each set of swing arm guide wheels is tangent to the cable. The connecting hole for installing the swing arm guide wheel is an oblong hole, set along the length of the guide wheel link.

[0008] Arc-shaped grooves are provided on the swing arm frame corresponding to the swing position of the swing arm. The number of arc-shaped grooves is adapted to the number of guide wheel connecting rods. The swing arm guide wheel and the swing arm are located on both sides of the swing arm frame, and the swing arm guide wheel shaft is located in the arc-shaped groove.

[0009] The swing arm amplitude detector is one of the following: angular displacement sensor, photoelectric switch, and contact switch. It is located on the swing arm and is equipped with a swing arm trigger element. When the swing amplitude of the swing arm reaches the set amplitude, the swing arm trigger element activates the swing arm amplitude detector.

[0010] The swing arm amplitude detector is a contact switch located at the other end of the swing arm above the hinge shaft. The swing arm trigger element is arc-shaped. When the swing arm is in a natural drooping state, the swing arm trigger element triggers the contact switch to sound an alarm.

[0011] A communication cable laying system for mobile equipment includes a cable tightness monitoring device used in the aforementioned communication cable laying system for mobile equipment.

[0012] It also includes a cable guide device, which includes a cable guide frame and at least one guide wheel. The guide wheel is rotatably mounted on the cable guide frame. When two or more guide wheels are provided, the guide wheels are arranged in parallel from top to bottom. The tangent points of each guide wheel and the cable are further and further away from the central vertical plane from top to bottom. The angle between the cable and the tangent of the bottommost guide wheel is less than or equal to 45 degrees and the cable is led out by the bottommost guide wheel. The cable is located on the same side of the guide wheel and the swing arm guide wheel and is supported by the guide wheel and / or the swing arm guide wheel. The swing arm frame also serves as the cable guide frame.

[0013] When the cable is tangent to each of the guide wheels, it is also tangent to the swing arm guide wheel. Two sets of guide wheels are provided on the swing arm frame, and the two sets of guide wheels are symmetrically arranged relative to the swing arm in its natural hanging position.

[0014] The advantages and beneficial effects of this utility model are as follows:

[0015] The cable tension monitoring device used in the mobile equipment communication cable laying system with the structure of this utility model can detect the cable tension when the swing angle of the cable swing arm exceeds the set range, indicating that the cable tension exceeds the design allowable range. Combined with the function of the swing arm amplitude detector, it reports alarm information, which can realize online detection of cable tension. The structure is simple. When an alarm is received, the machine can be stopped for inspection and adjustment to prevent cable stacking or excessive cable tightness. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an embodiment of the cable tension monitoring device of this utility model;

[0017] Figure 2 for Figure 1 Side view;

[0018] Figure 3 This is a schematic diagram showing the cable tension monitoring device of this utility model in use;

[0019] Figure 4 for Figure 3 Side view;

[0020] Figure 5 This is a schematic diagram of another embodiment of the cable tightness monitoring device of this utility model.

[0021] Explanation of reference numerals in the attached figures

[0022] 1-Cable

[0023] 300-Cable guide device, 301-Cable guide frame, 3011-Swing arm frame body, 302-Guide wheel assembly one, 3021-Guide wheel one; 303-Guide wheel assembly two, 3031-Guide wheel two, 304-Guide wheel,

[0024] 700-Cable tension monitoring device, 701-Swing arm, 702-Swing arm guide wheel, 703-Hinge shaft, 704-Guide wheel connecting rod, 705-Swing arm trigger element, 706-Swing arm amplitude detector, 707-Arc groove Detailed Implementation

[0025] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not limiting, and should not be used to limit the protection scope of the present invention.

[0026] like Figure 1-5 As shown, the cable tension monitoring device 700 of this embodiment is used to monitor the tension of cables used in mobile equipment during installation. The cables include electrical cables and optical cables.

[0027] A cable tension monitoring device is installed on one surface of the swing arm frame 3011. It includes a swing arm 701, a swing arm guide wheel 702, and a swing arm amplitude detector 706. The upper end of the swing arm 701 is hinged to the swing arm frame via a hinge shaft 703, and the lower end is the free swing end. It includes at least one swing arm guide wheel 702, which is located at the lower end of the hinge shaft and rotatably connected to the swing arm. Figure 1 , 2 As shown in Figure 5, in one embodiment, the swing arm guide wheel is directly rotatably mounted on the swing arm. When two or more swing arm guide wheels are provided, each swing arm guide wheel is arranged along the length direction of the swing arm. When multiple swing arm guide wheels are provided, all swing arm guide wheels constitute a set of swing arm guide wheels. Figure 3 and 4 As shown, in another preferred embodiment, at least one guide wheel link 704 is provided on the swing arm below the hinge axis. The guide wheel link is fixedly connected to the swing arm through its middle portion. A swing arm guide wheel 702 is rotatably provided at at least one end of the guide wheel link 701. When swing arm guide wheels are provided at both ends of the swing arm, it is preferable that the center line connecting the two ends of the guide wheel link is perpendicular to the vertical center line of the swing arm, and both swing arm guide wheels are located within the arc-shaped groove. All the swing arm guide wheels at one end of the guide wheel link form a set of swing arm guide wheels, and the two sets of swing arm guide wheels on both sides of the swing arm are symmetrically arranged. In use, only one set of swing arm guide wheels contacts the cable and participates in the operation, while the other set is reserved as a spare. This structure, with two sets of guide wheels located symmetrically on one side of the swing arm, offers several advantages. First, after one set of guide wheels wears out, the other set can be used, making replacement and adjustment convenient. Second, it is suitable for cable reversing systems at the center point. When the moving equipment reaches the center reversing point, the cable reverses direction, allowing for continued monitoring of cable tension. Therefore, it has a wide range of applications.

[0028] The swing arm interacts with the cable via a swing arm guide wheel. When the cable tightens, it wraps around the swing arm guide wheel, acting on it and pushing the wheel to cause the swing arm to swing. Conversely, the swing arm provides tension to the cable through its own weight, keeping the cable in a dynamically tensioned state. With this structure, the cable tension is typically dynamic; the continuous swing of the swing arm keeps the cable appropriately tensioned, preventing it from swaying or coiling.

[0029] The swing arm amplitude detector 706 can be a contact switch, a photoelectric switch, or an angular displacement sensor, preferably a contact switch or a photoelectric switch. A swing arm trigger element 705 is set on the swing arm, corresponding to the position of the swing arm amplitude detector 706. When the swing amplitude of the swing arm is less than a certain angle and / or greater than a certain angle, the swing arm trigger element can activate the swing arm amplitude detector 706, causing it to upload an alarm signal. In this invention, the state when the swing arm is naturally vertical is generally considered to be the most relaxed state of the cable. Since the cable loses its supporting force on the swing arm guide wheel at this time, that is, it loses its tension, the swing arm trigger element 705 activates the swing arm amplitude detector 706 to upload alarm information. Due to the complex working environment in the laying of port communication cables, it is best to use a mechanical contact switch as the swing arm amplitude detector 706, with the swing arm trigger element 705 located at the upper end of the swing arm above the hinge shaft. Ideally, it should have a semi-circular, cap-shaped structure. Using this structure, the swing arm trigger element 705 can activate the contact switch when the swing arm is in a vertical position, but cannot activate it in other positions. This simplifies and ensures reliable tension detection.

[0030] During installation, the cable is routed around one side of a set of swing arm guide rollers. When the cable is taut, the swing arm guide rollers apply pressure to the cable. Figure 3 Taking the cable laying direction shown as an example, when the cable is taut, the swing arm swings to the right under the cable tension. When the cable is slack, the swing arm swings back to the left. As the speed of cable release and the moving speed of the mobile device change, the swing arm swings, and the swing arm trigger element swings. When the cable becomes slack to a certain extent, the swing angle of the swing arm decreases to a certain angle, and the swing arm amplitude detector uploads an alarm message. Practical experience has shown that when the swing arm has a certain swing angle, the swing arm guide wheel continuously provides clamping force to the cable, resulting in a certain tension in the cable. This tension continues until the cable becomes too slack, causing the swing arm to droop naturally. At this point, the swing arm guide wheel disengages from the cable, causing the cable to stack. Therefore, in actual production practice, the swing arm in its naturally drooping position is set as the alarm position. At this time, the swing angle of the swing arm is 0 degrees, and the swing arm amplitude detector uploads an alarm message.

[0031] This utility model provides a communication cable laying system for mobile equipment, including a cable tension monitoring device. The cable tension monitoring device is preferably combined with a cable guiding device with the following structure to monitor the cable tension and guide the cable laying, ensuring the cable is laid straight on the operating line. The cable guiding device includes a cable guide frame 301, which includes two opposing swing arm frames 3011. Multiple guide wheels 304 are rotatably arranged between the two swing arm frames. The two ends of each guide wheel are rotatably connected to the corresponding swing arm frame. The axles of each guide wheel are parallel. From top to bottom, the tangent points of each guide wheel and the cable are successively moved away from the swing arm in its natural state, ensuring that the angle between the cable and the horizontal plane when the cable leaves the lowest guide wheel is less than or equal to 45 degrees. The cable is located on the same side of the guide wheel and the swing arm guide wheel, and is supported by the guide wheel and / or the swing arm guide wheel. When the cable reaches a certain tension, the cable drags the swing arm towards the guide wheel. When the cable encounters the guide wheel, it is supported by the guide wheel and simultaneously tensioned by the swing arm guide wheel, preventing the cable from swaying. Ideally, when the cable is tangent to the guide wheel, it is also tangent to all guide wheels and the swing arm guide wheel, with multiple guide wheels supporting the cable simultaneously, reducing the pressure and wear on the guide wheels and improving their service life. With this combined cable guiding device structure, the swing angle of the swing arm reaches its maximum when the cable is tangent to and supported by all guide wheels. Therefore, when designing the linear speed and cable laying speed of the moving equipment, the maximum swing angle of the swing arm is used as a reference point, ensuring the cable is always tangent to all guide wheels and the swing arm is in a natural vertical position, allowing for stable cable operation and straight laying. With this design, there is no need to detect the maximum swing angle of the swing arm; an alarm is only triggered when the cable is in a slack state. Ideally, two sets of guide wheels should be installed on the swing arm frame, symmetrically positioned relative to the swing arm in its naturally drooping state. This structure facilitates cable guiding device maintenance and, in conjunction with a central reversing point, enables cable reversal during cable laying.

[0032] In a better design, the connection hole on the swing arm connecting rod that enables the swing arm guide wheel to rotate with the swing arm is an oblong hole. The length direction of the oblong hole is consistent with the setting direction of the two swing arm guide wheels. The wheel axle of the swing arm guide wheel is set in the oblong hole. In this way, the distance between the two swing arm guide wheels can be adjusted to adjust the distance of the arc formed by the swing arm guide wheel and each guide wheel, thereby adjusting the cable tension so that the cable tension is within a suitable range, so that the cable is neither too loose nor too tight. This is conducive to the straight laying of the cable.

[0033] The swing arm can be located between two swing arm frames. For ease of installation and equipment structure simplification, the swing arm wall is located on the side opposite to the guide wheel of one swing arm frame, and the swing arm guide wheel is located between the two swing arm frames. At least one arc-shaped groove 707 is provided on the swing arm frame below the hinge shaft. When the swing arm is in its natural vertical state, the swing arm preferably bisects the arc-shaped groove. When there are two or more arc-shaped grooves, they are arranged vertically, with the length of the lower arc-shaped groove being greater than the length of the upper arc-shaped groove. The curvature of the arc-shaped groove matches the swing curvature of the corresponding position of the swing arm. The number of arc-shaped grooves matches the number of swing arm guide wheels. The swing arm guide wheel shaft is entirely or partially located within the arc-shaped groove. When the swing arm swings, the swing arm guide wheel shaft moves along the arc-shaped groove within it. When there are two or more arc-shaped grooves, the number of guide wheel connecting rods is the same as the number of arc-shaped grooves. In the downward direction, the center distance of the swing arm guide wheels on the lower guide wheel connecting rod increases sequentially. With this structure, the swing arm amplitude detector, the swing arm, and the swing arm triggering element are all located on the outside of the swing arm frame, making it more convenient to inspect and replace the above-mentioned devices.

Claims

1. A cable tightness monitoring device for use in a communication cable laying system for mobile equipment, characterized by: It includes a swing arm, a swing arm guide wheel, and a swing arm amplitude detector. The upper end of the swing arm is set on one side surface of the swing arm frame via a hinge shaft. The swing arm guide wheel is located below the hinge shaft and is rotatably connected to the swing arm. The swing arm swings under the tension of the cable through the interaction between the swing arm guide wheel and the cable. The swing arm amplitude detector detects the magnitude of the swing arm swing. When the swing arm swing amplitude exceeds the set range, the swing arm amplitude detector uploads an alarm message.

2. A cable tension monitoring device for use in a communication cable laying system for mobile equipment as claimed in claim 1, wherein: It also includes a guide wheel connecting rod fixedly connected to the swing arm, and the swing arm guide wheel is provided at least at one end of the guide wheel connecting rod, with the swing arm guide wheel rotatably connected to the guide wheel connecting rod.

3. A cable tension monitoring device for use in a communication cable laying system for mobile equipment as claimed in claim 2, wherein: It includes two or more guide wheel links, each guide wheel link arranged vertically along the length of the swing arm. The distance between the swing arm guide wheel on the lower guide wheel link and the swing arm increases sequentially. Each swing arm guide wheel at the same end of the guide wheel link forms a set of swing arm guide wheels. When swing arm guide wheels are set at both ends of the guide wheel link, the two sets of swing arm guide wheels at both ends of the guide wheel link are symmetrically arranged, and each set of swing arm guide wheels is tangent to the cable. The connecting hole for installing the swing arm guide wheel is an oblong hole, set along the length of the guide wheel link.

4. A cable tension monitoring device for use in a communication cable laying system for mobile equipment as claimed in claim 3, wherein: An arc-shaped groove is provided on the swing arm frame corresponding to the swing position of the swing arm. The number of arc-shaped grooves is adapted to the number of guide wheel connecting rods. The swing arm guide wheel and the swing arm are located on both sides of the swing arm frame, and the swing arm guide wheel shaft is located in the arc-shaped groove.

5. The cable tension monitoring device used in a mobile equipment communication cable laying system as described in claim 3, characterized in that: The swing arm amplitude detector is one of the following: angular displacement sensor, photoelectric switch, or contact switch. It is located on the swing arm and is equipped with a swing arm trigger element. When the swing amplitude of the swing arm reaches the set amplitude, the swing arm trigger element activates the swing arm amplitude detector.

6. A cable tension monitoring device for use in a communication cable laying system for mobile equipment as claimed in claim 5, wherein, The swing arm amplitude detector is a contact switch located at the other end of the swing arm above the hinge shaft. The swing arm trigger element is arc-shaped. When the swing arm is in a natural drooping state, the swing arm trigger element triggers the contact switch to sound an alarm.

7. A communication cable laying system for mobile equipment, characterized by The cable tension monitoring device includes the communication cable laying system for mobile equipment as described in any one of claims 1-6.

8. A communications cable deployment system for mobile equipment as recited in claim 7, wherein, It also includes a cable guide device, which includes a cable guide frame and at least one guide wheel. The guide wheel is rotatably mounted on the cable guide frame. When two or more guide wheels are provided, the guide wheels are arranged in parallel from top to bottom. The tangent points of each guide wheel and the cable are further and further away from the central vertical plane from top to bottom. The angle between the cable and the tangent of the lowermost guide wheel is less than or equal to 45 degrees and the cable is led out by the lowermost guide wheel. The cable is located on the same side of the guide wheel and the swing arm guide wheel and is supported by the guide wheel and / or the swing arm guide wheel. The swing arm frame also serves as the cable guide frame.

9. A communications cable laying system for mobile equipment as claimed in claim 8, wherein, When the cable is tangent to each of the guide wheels, it is also tangent to the swing arm guide wheel. Two sets of guide wheels are provided on the swing arm frame, and the two sets of guide wheels are symmetrically arranged relative to the swing arm in its natural hanging position.

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