A tension compensation device for cable winding and unwinding

Abstract

This invention discloses a tension compensation device for cable winding and unwinding, belonging to the field of cable winding and unwinding technology. It includes a tensioning wheel assembly and a tension detection wheel assembly. The tensioning wheel assembly features a hinged arm to support the rotation of the reversing wheel. A spring is incorporated into the adjustable tension arm to achieve force balance between the spring force and the radial force on the reversing wheel when the cable is under load during winding and unwinding. Furthermore, when the cable load drops sharply, the stored spring force applies a thrust to the cable, thereby compensating for the winding and unwinding tension. This prevents violent cable rebound and jamming during sudden load drops, avoiding damage to the equipment and safety accidents. It also improves the tension stability during cable winding and unwinding, thus enhancing the overall stability of the device. The tension detection wheel assembly monitors the cable winding and unwinding tension in real time.

Description

Technical Field

[0001] This invention belongs to the field of cable winding and unwinding technology, and specifically relates to a tension compensation device for cable winding and unwinding. Background Technology

[0002] As a key component in VLF communication systems, the JZ VLF transmitting antenna's cable deployment and retraction operations directly affect the stability of the communication link and the safety of equipment operation.

[0003] During cable deployment and retrieval, sudden load drops are unavoidable due to various factors such as the working environment and equipment conditions. Typical scenarios include: cable breakage caused by long-term wear, external impact, or material fatigue, resulting in the instantaneous loss of load; and severe turbulence caused by airflow disturbances or sudden malfunctions of the operating platform (such as an aircraft), leading to a rapid change in the cable's stress state and a sudden load drop. In such emergencies, because the cable was initially under tension during deployment and retrieval, the instantaneous release of this tension after the load drop causes a strong rebound of the cable along the retrieval direction.

[0004] This rebound phenomenon can cause a series of serious problems: First, the violently rebounding cable is prone to collision and entanglement with the mechanical parts of the take-up and release mechanism, causing the cable to get stuck in the take-up and release channel or transmission structure. This not only causes wear and tear on the cable itself, but may also damage the core components of the take-up and release mechanism such as gears, bearings, and motors, significantly increasing equipment maintenance costs and downtime. Second, if the jamming is severe, it may cause a chain of failures such as overload shutdown of the take-up and release mechanism and secondary cable breakage, and may even pose a direct threat to the flight safety of the operating vehicle (such as an aircraft) and the personal safety of the operators, causing major safety accidents. Summary of the Invention

[0005] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a tension compensation device for cable winding and unwinding, which can compensate for a certain tension of the cable when the load drops sharply during the cable winding and unwinding process, smooth the degree of cable rebound, and thus protect the entire winding and unwinding device from damage caused by the violent rebound of the cable.

[0006] To achieve the above objectives, the present invention provides a tension compensation device for cable winding and unwinding, comprising a tensioning wheel assembly; the tensioning wheel assembly includes an adjustable tension arm, a hinged arm, a reversing wheel, and a rotating shaft;

[0007] The reversing wheel passes through the rotating shaft and is coaxially fixed to the rotating shaft; one end of the hinge arm is rotatably connected to the rotating shaft, and the other end is rotatably disposed to support the rotating shaft; the adjustable tension arm includes a spring; one end of the spring is rotatably connected to the rotating shaft, and the other end is rotatably disposed.

[0008] When the cable is under load, the cable applies a radial force to the reversing wheel from the side away from the adjustable tension arm. The reversing wheel drives the shaft to move and compresses the spring to balance. When the cable load drops sharply, the spring pushes the reversing wheel to move towards the side where the cable is located, applying a thrust to the cable to compensate for the cable's tension during winding and unwinding.

[0009] As a further improvement of the present invention, the adjustable tension arm further includes a piston and a piston rod; one end of the piston rod is rotatably connected to the rotating shaft, and the other end is connected to the piston, and the end of the piston facing away from the piston rod is rotatably disposed; the spring passes through the piston rod, and one end of the spring is fixedly connected to the end of the piston rod facing away from the piston, and the other end is fixedly connected to the piston.

[0010] As a further improvement of the present invention, a first connecting hole is provided at one end of the piston connecting rod near the rotating shaft, a first bearing is provided in the first connecting hole, and one end of the rotating shaft passes through the first bearing; a first support is provided on the side of the piston away from the piston connecting rod, and the first support is hinged to the piston.

[0011] As a further improvement of the present invention, a second connecting hole is provided at one end of the hinge arm near the rotating shaft, a second bearing is provided in the second connecting hole, and one end of the rotating shaft passes through the second bearing; a second support is provided on the side of the hinge arm away from the second connecting hole, and the second support is hinged to the hinge arm.

[0012] As a further improvement of the present invention, the connecting surfaces of the first support and the second support are arranged perpendicular to each other.

[0013] As a further improvement of the present invention, the tensioning wheel assembly also includes a counting component, which is fixedly connected to the rotating shaft to rotate with the reversing wheel, thereby calculating the cable winding and unwinding length by recording the rotation angle of the reversing wheel.

[0014] As a further improvement of the present invention, the tensioning wheel assembly includes two hinged arms and two adjustable tension arms; the two hinged arms are symmetrically distributed on both sides of the reversing wheel, the two adjustable tension arms are symmetrically distributed on both sides of the reversing wheel, and the two adjustable tension arms are located between the two hinged arms.

[0015] As a further improvement of the present invention, a tension detection wheel assembly is also included, wherein the cable passes through the tension wheel assembly and exits from the tension detection wheel assembly, so as to detect the tension of the cable by means of the tension detection wheel assembly.

[0016] As a further improvement of the present invention, the tension detection wheel assembly includes a guide wheel, a tension sensor, a fixed shaft, and a third support; both ends of the fixed shaft are fixedly supported on the third support, the guide wheel is coaxially inserted on the fixed shaft and rotatably connected to the fixed shaft; the tension sensor is disposed on the fixed shaft to calculate the tension of the cable by measuring the radial force of the guide wheel on the fixed shaft.

[0017] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0018] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include:

[0019] (1) The tension compensation device for cable winding and unwinding of the present invention provides a hinged arm in the tensioning wheel assembly to support the rotation of the reversing wheel. At the same time, a spring is provided in the adjustable tension arm so that when there is a load during the winding and unwinding of the cable, the elastic force formed by the compression spring and the radial force on the reversing wheel are in a force balance state. When the cable load drops sharply, the elastic force stored in the compression spring is used to apply a thrust to the cable, thereby compensating for the winding and unwinding tension of the cable. This avoids the cable from rebounding violently and getting stuck when the load drops sharply, thus preventing damage to the equipment and avoiding safety accidents. It also improves the tension stability during the winding and unwinding of the cable, thereby improving the stability of the entire winding and unwinding device.

[0020] (2) The tension compensation device for cable winding and unwinding of the present invention includes a counting component in the tensioning wheel group to count the winding and unwinding length of the cable while adjusting the compensation tension; and a tension detection wheel group to monitor the real-time winding and unwinding tension of the cable to ensure the effectiveness of the tension compensation device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the tension compensation device for cable winding and unwinding in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the tensioning wheel assembly in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the tension detection wheel assembly in an embodiment of the present invention;

[0025] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Tensioning wheel assembly; 101. Adjustable tension arm; 1011. Spring; 1012. Piston connecting rod; 1013. Piston; 102. Hinge arm; 103. Reversing wheel; 104. Counting assembly; 105. Rotating shaft; 106. First support; 107. Second support; 2. Tension detection wheel assembly; 201. Guide wheel; 202. Tension sensor; 203. Fixed shaft; 204. Third support; 3. Cable. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0027] In the description of this invention, it should be understood that, unless otherwise expressly specified and limited, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0028] Furthermore, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] Example:

[0032] Please see Figures 1-3 In a preferred embodiment of the present invention, the tension compensation device for cable winding and unwinding includes a tensioning wheel group 1 and a tension detection wheel group 2, so as to compensate and adjust the tension of the cable 3 during the winding and unwinding process through the tensioning wheel group 1, and to detect the tension of the cable 3 after compensation by the tensioning wheel group 1 through the tension detection wheel group 2.

[0033] Specifically, such as Figure 2 As shown, in the preferred embodiment, the tensioning wheel assembly 1 includes an adjustable tension arm 101, a hinge arm 102, a reversing wheel 103, and a rotating shaft 105; wherein, the reversing wheel 103 passes through and is fixed on the rotating shaft 105, so that the reversing wheel 103 drives the rotating shaft 105 to rotate under the action of the cable 3; one end of the hinge arm 102 is rotatably connected to the rotating shaft 105 to support the rotating shaft 105, and the other end of the hinge arm 102 is rotatably disposed.

[0034] like Figure 2 In the preferred embodiment shown, a second connecting hole is provided at one end of the hinge arm 102 near the rotating shaft 105, and a second bearing is provided in the second connecting hole so that one end of the rotating shaft 105 passes through the second bearing, thereby realizing the rotatable connection between the rotating shaft 105 and one end of the hinge arm 102; at the same time, a second support 107 is provided on the side of the hinge arm 102 away from the second connecting hole. One end of the second support 107 is hinged to the hinge arm 102, and the other end can be fixedly connected to other structures to realize the rotatable installation of one end of the hinge arm 102.

[0035] Meanwhile, the adjustable tension arm 101 includes a spring 1011. One end of the spring 1011 is rotatably connected to the rotating shaft 105, and the other end is rotatably configured so that when the cable 3 is loaded and passes through the reversing wheel 103, the cable 3 applies a radial force to the reversing wheel 103 from the side away from the adjustable tension arm 101. The reversing wheel 103 drives the rotating shaft 105 to move, and the rotating shaft 105 drives the hinge arm 102 to rotate, compressing the spring 1011 to a balanced state and maintaining it. When the cable 3 experiences a sudden drop in load during the winding and unwinding process, the radial force on the spring 1011 decreases, the spring 1011 rebounds, releases the compressed and stored tension, drives the rotating shaft 105 to move and pushes the reversing wheel 103 to the side where the cable 3 is located, applying a thrust to the cable 3, thereby compensating for the winding and unwinding tension of the cable 3.

[0036] Preferably, the adjustable tension arm 101 further includes a piston 1013 and a piston rod 1012; wherein, one end of the piston rod 1012 is rotatably connected to the rotating shaft 105, and the other end is connected to the piston 1013, and the end of the piston 1013 facing away from the piston rod 1012 is rotatably disposed; the spring 1011 passes through the piston rod 1012, and one end of the spring 1011 is fixedly connected to the end of the piston rod 1012 facing away from the piston 1013, and the other end is fixedly connected to the piston 1013, so as to provide axial support for the spring 1011, and can adapt to the change in the length of the spring 1011 by the relative movement of the piston rod 1012 and the piston 1013 when the spring 1011 is compressed.

[0037] More preferably, a first connecting hole is provided at one end of the piston connecting rod 1012 near the rotating shaft 105, and a first bearing is provided in the first connecting hole, so that the rotating shaft 105 is passed through the first bearing to realize the rotational connection between the piston connecting rod 1012 and the rotating shaft 105; at the same time, a first support 106 is provided on the side of the piston 1013 away from the piston connecting rod 1012, one end of the first support 106 is hinged to the piston 1013, and the other end can be fixedly connected to other structures to realize the rotatable installation of one end of the piston 1013.

[0038] Preferably, such as Figure 2 As shown, the connecting surfaces of the first support 106 and the piston 1013 are perpendicular to each other and the connecting surfaces of the second support 107 and the hinge arm 102, so that the adjustable tension arm 101 and the hinge arm 102 form a certain angle and jointly support the rotating shaft 105.

[0039] Preferably, the tensioning wheel assembly 1 further includes a counting component 104, which is fixedly mounted on the rotating shaft 105 to rotate with the reversing wheel 103, thereby calculating the winding and unwinding length of the cable 3 by recording the rotation angle of the reversing wheel 103.

[0040] In actual setup, the adjustable tension arm 101 and the hinge arm 102 can be set to one or multiple, depending on the maximum load and minimum safe tension of the cable 3. For example, the tension adjustment range of the tension compensation device formed by a single adjustable tension arm 101 and a single hinge arm 102 is 60~250kg. If it is necessary to meet the requirements of a maximum load of 500kg and a minimum safe tension of 100kg for the cable 3, then it is necessary to set up a tension compensation device formed by two adjustable tension arms 101 and two hinge arms 102 so that the tension adjustment range of the device reaches 120~500kg.

[0041] like Figure 2 In the preferred embodiment shown, the tensioning wheel assembly 1 is provided with two hinged arms 102 and two adjustable tension arms 101. The two hinged arms 102 are symmetrically distributed on both sides of the reversing wheel 103, and the two adjustable tension arms 101 are symmetrically distributed on both sides of the reversing wheel 103. The two adjustable tension arms 101 are located between the two hinged arms 102, forming a stable tension compensation structure.

[0042] Furthermore, such as Figure 3 As shown, the tension detection wheel assembly 2 in the preferred embodiment includes a guide wheel 201, a tension sensor 202, a fixed shaft 203, and a third support 204; wherein the two ends of the fixed shaft 203 are fixedly supported on the third support 204, the guide wheel 201 is coaxially inserted through the fixed shaft 203 and rotatably connected to the fixed shaft 203 so that the guide wheel 201 rotates relative to the fixed shaft 203 under the action of the cable 3; the tension sensor 202 is fixedly installed on the fixed shaft 203 to calculate the tension of the cable 3 by measuring the radial force exerted by the guide wheel 201 on the fixed shaft 203.

[0043] like Figure 1 As shown, the tension detection wheel group 2 is located below the adjustable tension arm 101. The cable 3 is introduced into the tension wheel group 1 from the right arrow for tension adjustment, and after being reversed by the reversing wheel 103, it enters the tension detection wheel group 2 to measure the tension. Then, the guide wheel 201 guides it and leads it out from the arrow.

[0044] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A tension compensation device for cable winding and unwinding, characterized in that, Includes a tensioning wheel assembly; the tensioning wheel assembly includes an adjustable tension arm, a hinged arm, a reversing wheel, and a rotating shaft; The reversing wheel passes through the rotating shaft and is coaxially fixed to the rotating shaft; one end of the hinge arm is rotatably connected to the rotating shaft, and the other end is rotatably disposed to support the rotating shaft; the adjustable tension arm includes a spring, a piston, and a piston rod; one end of the spring is rotatably connected to the rotating shaft, and the other end is rotatably disposed; one end of the piston rod is rotatably connected to the rotating shaft, and the other end is connected to the piston, with the end of the piston facing away from the piston rod rotatably disposed; the spring passes through the piston rod, and one end of it is fixedly connected to the end of the piston rod facing away from the piston, and the other end is fixedly connected to the piston; When the cable is under load, the cable applies a radial force to the reversing wheel from the side away from the adjustable tension arm. The reversing wheel drives the shaft to move and compresses the spring to balance. When the cable load drops sharply, the spring pushes the reversing wheel to move towards the side where the cable is located, applying a thrust to the cable to compensate for the cable's tension during winding and unwinding.

2. The tension compensation device for cable winding and unwinding according to claim 1, characterized in that, The piston connecting rod has a first connecting hole at one end near the rotating shaft, and a first bearing is installed in the first connecting hole. One end of the rotating shaft passes through the first bearing. The piston has a first support on the side away from the piston connecting rod, and the first support is hinged to the piston.

3. The tension compensation device for cable winding and unwinding according to claim 2, characterized in that, The hinge arm has a second connecting hole at one end near the rotating shaft, and a second bearing is installed in the second connecting hole. One end of the rotating shaft passes through the second bearing. The hinge arm has a second support on the side away from the second connecting hole, and the second support is hinged to the hinge arm.

4. The tension compensation device for cable winding and unwinding according to claim 3, characterized in that, The connecting surfaces of the first support and the second support are perpendicular to each other.

5. The tension compensation device for cable winding and unwinding according to claim 1, characterized in that, The tensioning wheel assembly also includes a counting component, which is fixedly connected to the rotating shaft to rotate with the reversing wheel, thereby calculating the cable winding and unwinding length by recording the rotation angle of the reversing wheel.

6. The tension compensation device for cable winding and unwinding according to any one of claims 1 to 5, characterized in that, The tensioning wheel assembly includes two hinged arms and two adjustable tension arms; the two hinged arms are symmetrically distributed on both sides of the reversing wheel, and the two adjustable tension arms are symmetrically distributed on both sides of the reversing wheel, with the two adjustable tension arms located between the two hinged arms.

7. The tension compensation device for cable winding and unwinding according to claim 1, characterized in that, It also includes a tension detection wheel assembly, through which the cable passes and exits to detect the tension of the cable.

8. The tension compensation device for cable winding and unwinding according to claim 7, characterized in that, The tension detection wheel assembly includes a guide wheel, a tension sensor, a fixed shaft, and a third support. The two ends of the fixed shaft are fixedly supported on the third support. The guide wheel is coaxially mounted on the fixed shaft and rotatably connected to the fixed shaft. The tension sensor is mounted on the fixed shaft to calculate the tension of the cable by measuring the radial force exerted by the guide wheel on the fixed shaft.

Images