A wire-wrapping type automatic wire winding and unwinding device without plugging and unplugging

Abstract

The present invention discloses a plug-free winding type automatic wire winding and unwinding device, belonging to the technical field of wire winding and unwinding in the communication industry. The device includes a central shaft, a spring box, a follower reel, and a first wire winding groove disc that are coaxially and rotatably connected to the central shaft. Among them, a chamber of the spring box accommodates a clockwork spring with one end fixed to the central shaft and the other end fixed to the inner wall of the chamber; the driving reel is coaxially and loosely sleeved on the central shaft and is fixedly connected to the spring box; the follower reel is arranged in a central through hole of the driving reel and is provided with an opening part penetrating through both end faces of the follower reel; a first wire winding groove disc and a second wire winding groove disc are symmetrically arranged at both axial ends of the follower reel respectively. When winding and unwinding the wire, the device uses the rotation of the follower reel to make the wire located inside the driving reel alternately wind between the first wire winding groove disc and the second wire winding groove disc, achieving the function of replacing a coaxial rotary joint.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable winding and unwinding in the communication industry, and particularly relates to a plug-free winding type automatic cable winding and unwinding device. Background Art

[0002] With the development of the communication industry, the coverage range of communication signals is getting wider and wider. However, there are still some places where there is no communication signal or the signal is very weak. Mobile communication vehicles can better solve the problem of signal coverage in these places. A mobile communication vehicle is equivalent to a mobile base station, which can fill the places without communication signals or with very weak signals with communication signals to ensure normal communication. Generally, a signal tower is installed on the top of this kind of mobile base station, and the function of the signal tower is to support various signal transmitting devices or various signal receiving devices. In order to reduce the occlusion and shielding of signals by the complex ground, when the mobile communication vehicle is working, the signal tower will be raised and erected high in the air away from the ground, and when it stops working, the signal tower will be lowered and stored in the vehicle.

[0003] When the signal tower moves up or down, the radio frequency cables for communication, the power cables and control cables of the signal transmitting devices and signal receiving devices need to be wound and unwound synchronously with the lifting of the signal tower. The cable winding and unwinding device is a device that synchronously winds and unwinds cables such as radio frequency cables, power cables, and control cables when the signal tower is lifted and lowered. To improve the cost performance of the mobile communication vehicle, as many signal transmitting devices and signal receiving devices as possible will be installed on the signal tower. The more devices are installed on the signal tower, the more cables such as radio frequency cables, power cables, and control cables will be. There are two existing cable winding and unwinding devices on mobile communication vehicles:

[0004] The first one is as Figure 1The shown cable pay-off and take-up device has a cable reel 1-1 rotating around a reel shaft 1-2. When rotating counterclockwise, it releases the cable, and when rotating clockwise, it winds up the cable. A number of aviation sockets are installed on the cable reel 1-1. Generally, the number of cables corresponds one-to-one with the number of aviation sockets, that is, there are as many aviation sockets as there are cables. One end of the cable 1-3 wound on the cable reel is connected to the aviation socket on the cable reel 1-1, and the other end is connected to the signal tower. The aviation plug of the terminal cable is connected to the corresponding aviation socket on the cable reel 1-1, and the transmission channel between the terminal device and the equipment installed on the signal tower is connected, and the equipment installed on the signal tower works. When the aviation plug of the terminal cable is disconnected from the corresponding aviation socket on the cable reel 1-1, the transmission channel between the terminal device and the equipment installed on the signal tower is cut off, and the equipment installed on the signal tower cannot work. When the signal tower is lifted or lowered, the cable reel 1-1 needs to rotate synchronously to pay off and wind up the cable 1-3. If the aviation plug of the terminal cable is in a connected state with the aviation socket on the cable reel 1-1 when the cable reel 1-1 rotates, several terminal cables will be twisted together, which will cause damage to the aviation socket and the cable. Therefore, when the signal tower is lifted or lowered and the cable reel rotates synchronously to pay off and wind up the cable, the aviation plug of the terminal cable should be in a disconnected state, and the terminal cable is fixed on the adapter base 1-5 that does not rotate with the cable reel 1-1. It can be seen that this solution has the following drawbacks: ① To avoid damage to the aviation plug and the cable, when the cable reel 1-1 rotates synchronously to pay off and wind up the cable, the aviation plug of the terminal cable needs to be in a disconnected state from the aviation socket on the cable reel 1-1, and the communication equipment installed on the signal tower cannot work at this time; ② Every time the signal tower needs to be lifted or lowered and the cable reel needs to rotate synchronously to pay off and wind up the cable, it is necessary to first confirm whether the aviation plug of the terminal cable has been removed from the aviation socket on the cable reel. After the signal tower is lifted or lowered in place and the cable reel stops rotating, then insert the aviation plug of the terminal cable into the aviation socket on the cable reel to connect the transmission channel between the terminal device and the equipment installed on the signal tower. The operation is cumbersome and the manual labor intensity is high.

[0005] The second cable pay-off and take-up device uses a coaxial rotating joint to achieve the function of cable non-plugging and unplugging. Since the coaxial rotating joint is expensive, the cost of this solution is too high.

[0006] The third cable pay-off and take-up device is to adopt the method of winding the cable spirally along the communication tower lifting device. When the communication tower rises, the cable unfolds in a spiral shape, and when the communication tower descends, the cable compresses in a spiral shape. This method can achieve the function of cable non-plugging and unplugging, but the cable length is relatively long and the signal loss is relatively large, which is suitable for communication equipment with a relatively short lifting and lowering stroke of the communication tower.

[0007] Therefore, there is currently no cable pay-off and take-up device that can adapt to the automatic pay-off and take-up of various types of cables, and can also achieve non-plugging and unplugging, save labor, and reduce communication loss. Summary of the Invention

[0008] In view of this, the present invention provides a plug-free winding type automatic cable retracting and deploying device, which has the functions of automatically retracting and deploying various types of communication cables, being plug-free, saving labor, and reducing communication loss.

[0009] The present invention adopts the following technical solutions:

[0010] A plug-free winding type automatic cable retracting and deploying device includes a central shaft, a spring box, a follower reel, and a first wire winding groove disc that are coaxially and rotatably connected to the central shaft;

[0011] A winding spring with one end fixed to the central shaft and the other end fixed to the inner wall of the chamber is accommodated in the chamber of the spring box;

[0012] The driving reel is coaxially and loosely sleeved on the central shaft and is fixedly connected to the spring box;

[0013] The follower reel is arranged in the middle through hole of the driving reel and is provided with an opening part penetrating through both end faces of the follower reel;

[0014] A first wire winding groove disc and a second wire winding groove disc are symmetrically arranged at both axial ends of the follower reel respectively; wherein the first wire winding groove disc is clamped between the spring box and the follower reel and is fixedly connected to the spring box, and a first spiral groove for accommodating a cable is arranged on the end face of the first wire winding groove disc opposite to the follower reel;

[0015] A second spiral groove for accommodating a cable is arranged on the end face of the second wire winding groove disc opposite to the follower reel, and the second wire winding groove disc is fixedly connected to the central shaft;

[0016] After the cable is fully wound in the first spiral groove, one end is wound onto the driving reel and then connected to a communication tower, and the other end passes through the opening part, and then passes through the through hole at the innermost circle of the second spiral groove and is connected to a communication device on a mobile communication vehicle.

[0017] Further, a connection through hole is arranged on the driving reel;

[0018] After the cable is fully wound in the first spiral groove, one end first passes out from the opening at the outermost circle of the first spiral groove, then passes through the connection through hole and is wound onto the driving reel and then connected to a communication tower.

[0019] Further, the cable passing through the connection through hole is fixed and then wound onto the driving reel;

[0020] The cable passing out from the through hole at the innermost circle of the second spiral groove is fixed and then connected to the communication device on the mobile communication vehicle.

[0021] Further, two rows of guide shafts are arranged radially in the opening portion along the radial direction of the follower reel, with a set distance between them and arranged in an arc shape.

[0022] A guide shaft sleeve that can rotate relative to the axis of the guide shaft is sleeved on the outer peripheral side of the guide shaft.

[0023] Further, a support member is also provided in the opening portion.

[0024] The support shaft is arranged in the opening portion through the support member.

[0025] Further, the outer contour of the opening portion is connected to the outer contour of the follower reel.

[0026] Further, support shafts are evenly arranged circumferentially between the two side plates on the axial sides of the follower reel.

[0027] Both ends of the support shaft are fixedly connected to the end faces of the follower reel respectively, and a support shaft sleeve that contacts the inner wall surface of the driving reel is sleeved on the outer peripheral side of the support shaft.

[0028] When the driving reel rotates around the axis of the central shaft, the support shaft sleeve can rotate relative to the axis of the support shaft.

[0029] Further, the plug-free winding type automatic wire winding and unwinding device further includes a housing cover.

[0030] Both ends of the central shaft are fixedly connected to both sides of the housing cover respectively, so that the spring box, the driving reel, the first wire groove disc, the follower reel and the second wire groove disc are all accommodated inside the housing cover.

[0031] The housing cover is provided with a housing cover wire outlet A and a housing cover wire outlet B; the wire wound on the driving reel passes through the housing cover wire outlet A and then is connected to the communication tower; the wire passing through the through hole in the innermost circle of the second spiral groove passes through the housing cover wire outlet B and then is connected to the communication device.

[0032] Further, at least two limiting members are arranged at a position in the inner cavity of the housing cover close to the wire outlet A.

[0033] All the limiting members can rotate around their own axes.

[0034] The wire wound on the driving reel first passes between the limiting members, then passes through the housing cover wire outlet A, and finally is connected to the communication tower.

[0035] Further, the second wire groove disc is fixedly connected to the central shaft by being fixedly connected to the housing cover.

[0036] Beneficial effects:

[0037] (1) A plug-free winding type automatic cable winding and unwinding device provided by the present invention. The follower reel, the first wire groove disc, and the second wire groove disc are all coaxially arranged in the central through hole of the driving reel, with a compact structure. When in use, the central shaft is fixed. When the communication tower rises, the cable outside the driving reel unfolds synchronously with the rise of the communication tower from the wound state. The driving reel rotates around the central shaft, and the spring box and the first wire groove disc fixedly connected to the driving reel also rotate synchronously around the central shaft. At this time, the clockwork spring in the spring box winds and stores energy synchronously. The cable passing through the opening of the follower reel rotates with the first wire groove disc and drives the follower reel to rotate around the central shaft, so that the cable wound in the first spiral groove is wound into the second spiral groove.

[0038] When the communication tower descends, the clockwork spring in the spring box releases energy, driving the spring box, the driving reel fixedly connected to the spring box, and the first wire groove disc to rotate in the reverse direction together, so that the unfolded cable is wound onto the driving reel synchronously with the descent of the communication tower. The cable passing through the opening of the follower reel rotates in the reverse direction with the first wire groove disc, and the cable passing through the opening of the follower reel drives the follower reel to rotate in the reverse direction around the central shaft, and further winds the cable wound on the second wire groove disc into the first spiral groove.

[0039] Therefore, during the rise or fall of the communication tower, the driving reel in the plug-free automatic cable winding and unwinding device makes the cable that is located inside the driving reel and does not directly participate in the cable winding and unwinding alternate between the spiral grooves of the first wire groove disc and the second wire groove disc by using the rotation of the follower reel during cable winding and unwinding, achieving the plug-free function of the input cable (referring to one end of the cable connected to the communication equipment on the communication vehicle) and the aviation plug, significantly reducing the cost and having good economic benefits. At the same time, it can avoid the problems of relatively long cable length and relatively large signal loss caused by the traditional way of spirally winding the cable along the communication tower lifting device.

[0040] Moreover, from the principle of this automatic cable winding and unwinding device, it can be seen that the driving reel is equivalent to a fixed pulley, and the follower reel is equivalent to a movable pulley. The cable directly participating in the cable winding and unwinding on the driving reel rotates two circles, while the cable in the first wire groove disc and the second wire groove disc only rotates one circle, thereby reducing the length of the cable required inside the driving reel and reducing the communication loss value.

[0041] (2) The present invention provides a plug-free winding type automatic wire reeling and unwinding device, in which two rows of guide shafts are arranged in an arc shape at a set distance in the radial direction of the follow-up reel in the opening portion of the follow-up reel, and the outer peripheral side of the guide shaft is provided with a guide shaft sleeve that can rotate relative to the axis of the guide shaft, which can meet the turning radius requirements of the cable, reduce the bending angle of the cable, and reduce the wear of the cable, thereby further reducing the communication loss of the cable.

[0042] (3) The present invention provides a plug-in-free winding type automatic wire reeling and unwinding device, wherein the outer contour of the opening of the follower reel is connected to the outer contour of the follower reel, so that a guide shaft and a guide shaft sleeve can be conveniently arranged at the opening, and the cable can be easily threaded.

[0043] (4) The present invention provides a plug-in-free winding type automatic wire reeling and unwinding device. Since the active reel is fixedly connected to the spring box only at one end close to the spring box, that is, the force characteristics of the active reel are equivalent to the force characteristics of the cantilever beam, support shafts are evenly arranged between the two side plates of the follower reel along the circumferential direction, and a support shaft sleeve that can contact the inner wall surface of the active reel is sleeved on the outer circumference of the support shaft. When the active reel rotates around the central axis, the support shaft sleeve can rotate relative to the axis of the support shaft, so that the support shaft supports the active reel, the active reel is subjected to uniform force, and the reliability of the device is improved.

[0044] (5) The present invention provides a plug-free winding automatic wire reeling and unwinding device, in which a spring box, an active reel, a first winding groove disk, a follower reel and a second winding groove disk are all accommodated inside an outer shell cover, which is not easy to be damaged and can also prevent the cable from being damaged by rain. At the same time, when the central axis needs to be fixed when using the automatic wire reeling and unwinding device, it is only necessary to fix the outer shell cover, which facilitates the actual use of the automatic wire reeling and unwinding device.

[0045] (6) The present invention provides a plug-free winding type automatic wire reeling and unwinding device, wherein at least two limit members that can rotate around their own rotation axes are arranged near the wire outlet A in the inner cavity of the outer shell cover. One end of the cable wound on the active reel passes through the gap between the limit members, then passes through the wire outlet A, and is finally connected to the communication tower, thereby avoiding scratches on the cable by the wire outlet A when the cable passes directly through the wire outlet A, thereby protecting the cable. In addition, the limit member guides the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of an existing wire-reeling and wire-releasing device on the first mobile communication vehicle described in the background technology;

[0047] Figure 2 A view of a winding type automatic wire taking-up and paying-off device according to an embodiment of the present invention at an end away from the spring box;

[0048] Figure 3 is Figure 2 the sectional view along line A-A in

[0049] Figure 4 is Figure 3 the sectional view along line B-B in

[0050] Figure 5 is Figure 3 the sectional view along line C-C in

[0051] Figure 6 is Figure 3 the sectional view along line D-D in

[0052] Figure 7 a view of a winding type automatic wire rewinding and unreeling device according to an embodiment of the present invention near one end of the spring box;

[0053] Figure 8 is Figure 3 a schematic structural view of the follower reel, the left side is the front view of the follower reel, and the right side is the sectional view along line A-A in the front view;

[0054] Figure 9 is Figure 3 a schematic installation view of the support member at the opening of the follower reel;

[0055] Figure 10 is Figure 3 a schematic structural view of the first wire winding groove disc, the leftmost is the front view of the first wire winding groove disc, the middle is the side view of the first wire winding groove disc, and the rightmost is the rear view of the first wire winding groove disc.

[0056] Wherein: 1 - the first housing; 2 - the second housing; 3 - the wire routing box; 4 - the fourth housing; 5 - the fifth housing; 6 - the flange; 7 - the first bushing; 8 - the first snap ring; 9 - the spring box cover plate; 10 - the clockwork spring; 11 - the spring box reel; 12 - the connecting plate; 13 - the wire winding groove disc; 14 - the driving reel; 15 - the follower reel; 15-1 - the support shaft; 15-2 - the left plate of the follower reel; 15-3 - the guide shaft; 15-4 - the guide bushing; 15-5 - the right plate of the follower reel; 15-6 - the support bushing; 15-7 - the first guide bracket; 15-8 - the second guide bracket; 15-9 - the third guide bracket; 15-10 - the fourth guide bracket; 15-11 - the fifth guide bracket; 15-12 - the sixth guide bracket; 16 - the second snap ring; 17 - the central shaft; 18 - the second bushing; 19 - the sixth housing; 20 - the limiting shaft; 21 - the limiting bushing. Specific embodiments

[0057] The present invention will be described in detail below with reference to the accompanying drawings and by way of examples.

[0058] As Figures 2 to 10As shown, a plug-free winding type automatic wire winding and unwinding device includes a central shaft 17, a spring box, a follower reel 15, and a first wire winding groove disc that are coaxially and rotatably connected to the central shaft 17 (i.e., can rotate around the central shaft 17). Among them:

[0059] As Figure 3 shown, Figure 4 the spring box includes a spring box reel 11 and a spring box cover plate 9. The spring box reel 11 is annular and coaxially sleeved outside the central shaft 17. There is a spring slot on the inner wall of the spring box reel 11. The outer end of the clockwork spring 10 accommodated inside the spring box chamber is fixed to this spring slot by screws, and the inner end of the clockwork spring 10 is fixed to the slot provided on the central shaft 17 by screws. A through hole is provided in the middle of the spring box cover plate 9. The spring box cover plate 9 is fixedly connected to the spring box reel 11 on its right side by screws, and the spring box cover plate 9 is rotatably connected to the central shaft 17 through a first bushing 7 (i.e., the spring box cover plate 9 can rotate around the central shaft 17). More specifically, the central shaft 17 is designed as a stepped shaft, and there are two snap ring grooves for installing snap rings and a slot for fixing the clockwork spring 10. A through hole is provided in the center of the connecting plate 12. The central shaft 17 passes through the central hole of the connecting plate 12 (i.e., the connecting plate 12 is sleeved on the central shaft 17 through the central hole and is located on the right side of the spring box reel 11), and the first snap ring 8 is installed in the snap ring groove on the left side of the connecting plate 12 to limit the rightward movement of the clockwork spring 10, and the spring box reel 11 is fixed to the connecting plate 12 by screws.

[0060] As Figure 3 shown, Figure 4 the driving reel 14 is coaxially and loosely sleeved on the central shaft 17, and the left end face of the driving reel 14 is fixedly connected to the spring box reel 11 through the connecting plate 12. Specifically, the left end face of the driving reel 14 is fixedly connected to the connecting plate 12 by screws, so as to achieve the purpose of fixedly connecting the driving reel 14 and the spring box. In this way, the synchronous rotation of the driving reel 14 and the spring box is realized. More specifically, when the communication tower rises, the wire outlet direction of the wire (not shown in the figure) on the driving reel 14 is selected as the positive direction, so that the clockwork spring 10 is wound positively in the spring box. In this way, when the communication tower rises and wire outlet is required, the wire wound on the outer circumference of the driving reel 14 unfolds synchronously with the rise of the communication tower, causing the driving reel 14 to rotate, and then driving the spring box to rotate through the connecting plate 12, so that the clockwork spring 10 in the spring box stores energy.

[0061] Refer to Figure 3 , Figure 4 and Figure 8The follower reel 15 is arranged in the middle through hole of the active reel 14, and is rotatably connected to the central shaft 17 through the second shaft sleeve 18 arranged in the middle through hole of the follower reel 15. Specifically, the follower reel 15 includes a follower reel left plate 15-2 and a follower reel right plate 15-5 which are opposite to each other and have through holes in the middle. The second shaft sleeve 18 is sleeved on the outer peripheral side of the central shaft 17 and is limited by the second retaining spring 16 to form a rotary motion pair. Moreover, between the two axial side plates of the follower drum 15, i.e., the follower drum left plate 15-2 and the follower drum right plate 15-5, a support shaft 15-1 is evenly arranged along the circumferential direction, and the two ends of the support shaft 15-1 are respectively fixedly connected to the two end surfaces of the follower drum 15 (i.e., the follower drum left plate 15-2 and the follower drum right plate 15-5) by screws, and a small section of support shaft sleeve 15-6 capable of rolling contact with the inner wall surface of the active drum 14 is sleeved on the outer circumference of the support shaft 15-1. In this way, when the active drum 14 rotates around the axis of the central axis 17, the support shaft sleeve 15-6 can also rotate relative to the axis of the support shaft 15-1, which makes the active drum 14 evenly stressed and improves the reliability of the device. In addition, referring to Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9 The follower reel 15 is provided with openings penetrating both end surfaces of the follower reel 15 (ie penetrating the follower reel left plate 15 - 2 and the follower reel right plate 15 - 5 ).

[0062] Reference Figure 3 , Figure 4 , Figure 5 and Figure 10 The winding groove disk 13 includes a first winding groove disk and a second winding groove disk symmetrically arranged at the axial ends of the follower drum, wherein the first winding groove disk is clamped between the spring box and the follower drum 15 (more specifically, the first winding groove disk is clamped between the connecting plate 12 and the left plate 15-2 of the follower drum), and is fixedly connected to the connecting plate 12 by screws, so as to achieve the purpose of fixed connection between the first winding groove disk and the spring box. In addition, the end surface of the first winding groove disk opposite to the follower drum is provided with a first spiral groove for accommodating the cable (the diameter of the spiral groove is adjusted according to the diameter of the cable, and the number of spiral groove turns is adjusted according to the number of turns required for the actual operation of the automatic winding and releasing device). Moreover, a first shaft sleeve 7 is also provided in the middle of the first winding groove disk to be rotatably connected to the central shaft 17. The end surface of the second winding groove disk opposite to the follower drum 15 is provided with a second spiral groove for accommodating the cable, and the second winding groove disk is fixedly connected to the central shaft 17.

[0063] It is worth noting that from Figure 3 and Figure 4It can be clearly seen that although both the spring box cover plate 9 and the first wire winding groove disc are rotationally connected to the central shaft 17 through the first shaft sleeve 7, the first shaft sleeve 7 used by the spring box cover plate 9 and the first wire winding groove disc is not the same shaft sleeve. Here, since the first wire winding groove disc, the driving reel 14, and the spring box reel 11 form an integral body that rotates around the central shaft 17 together, and the follower reel 15 is another relatively independent part that rotates around the central shaft 17, only the first shaft sleeve 7 and the second shaft sleeve 18 are distinguished in the naming of the shaft sleeves.

[0064] In this automatic retracting and deploying device, the arrangement of the cable is as follows: after the cable is fully wound in the first spiral groove, one end is wound around the driving reel 14 (the length of the cable wound around the driving reel 14 should meet the length required for the communication tower to rise) and then connected to the communication tower. The other end first passes through the opening part, and then passes through the through hole in the innermost circle of the second spiral groove and is connected to the communication equipment on the mobile communication vehicle.

[0065] From Figure 3 And Figure 4 It can be seen that the first spiral groove and the second spiral groove are located inside the driving reel 14. Therefore, the cable of the entire automatic cable retracting and deploying device can be divided into the cable outside the driving reel 14 and the cable inside the driving reel 14. When using this automatic cable retracting and deploying device, the central shaft 17 is fixed. When the communication tower rises, the cable outside the driving reel 14 unfolds synchronously with the rise of the communication tower from the wound state. The driving reel 14 rotates around the central shaft 17, and the spring box and the first wire winding groove disc fixedly connected to the driving reel 14 also rotate synchronously around the central shaft 17. At this time, the clockwork spring 10 in the spring box winds and stores energy synchronously. The cable passing through the opening of the follower reel 15 rotates with the first wire winding groove disc and drives the follower reel 15 to rotate around the central shaft 17, so that the cable in the first spiral groove of the first wire winding groove disc is wound into the second spiral groove of the second wire winding groove disc; when the communication tower descends, the clockwork spring 10 in the spring box releases energy, driving the spring box and the driving reel 14 and the first wire winding groove disc fixedly connected to the spring box to rotate in the reverse direction together, so that the cable in the unfolded state outside the driving reel is wound onto the driving reel 14 synchronously with the descent of the communication tower. The cable passing through the opening of the follower reel 15 rotates in the reverse direction with the first wire winding groove disc, and the cable passing through the opening of the follower reel 15 drives the follower reel 15 to rotate in the reverse direction around the central shaft 17, so that the cable in the second wire winding groove disc is wound back into the first spiral groove of the first wire winding groove disc again.

[0066] More specifically, referring to Figure 5 And Figure 10 , an opening 22 is provided at the outermost circle of the first spiral groove. Referring to Figure 5, a connecting through-hole 23 is provided on the driving reel 14. After the cable is fully wound in the first spiral groove, one end first passes through the opening 22 at the outermost circle of the first spiral groove, then passes through the connecting through-hole 23 and is wound onto the driving reel, and finally is connected to the communication tower. The opening 22 and the connecting through-hole 23 facilitate the connection between the cable inside the driving reel 14 and the cable outside the driving reel 14.

[0067] As an improvement, in the opening part of the follower reel 15, two rows of guide shafts 15-3 arranged at intervals of a set distance and in an arc shape are arranged along the radial direction of the follower reel 15. A guide shaft sleeve 15-4 capable of rotating relative to the axis of the guide shaft 15-3 is sleeved on the outer peripheral side of the guide shaft 15-3. Moreover, the cable passing through the opening part of the follower reel 15 passes between the two rows of guide shafts 15-3 arranged in an arc shape (that is, the above-mentioned set distance should enable the cable to pass through and not be clamped by the two rows of guide shafts 15-3). More specifically, referring to Figure 3 , Figure 4 , Figure 8 and Figure 9 , in the opening part of the follower reel 15, a first guide bracket 15-7, a second guide bracket 15-8, and a third guide bracket 15-9 fixed on the left plate 15-2 of the follower reel are provided. Among them, the second guide bracket 15-8 is arranged at a position closer to the middle through-hole of the follower reel 15, while the first guide bracket 15-7 and the third guide bracket 15-9 are closer to the outer edge of the follower reel 15. The bottom of the guide shaft 15-3 close to the left plate 15-2 of the follower reel is fixed on the second guide bracket 15-8 by screws, and the top is fixed on the first guide bracket 15-7 and the third guide bracket 15-9 by screws. Similarly, in the opening part of the follower reel 15, a fourth guide bracket 15-10, a fifth guide bracket 15-11, and a sixth guide bracket 15-12 fixed on the right plate 15-5 of the follower reel are provided. Among them, the fifth guide bracket 15-11 is arranged at a position closer to the middle through-hole of the follower reel 15, while the fourth guide bracket 15-10 and the sixth guide bracket 15-12 are closer to the edge of the outer contour of the follower reel 15. The bottom of the guide shaft 15-3 close to the right plate 15-5 of the follower reel is fixed on the fifth guide bracket 15-11 by screws, and the top is fixed on the fourth guide bracket 15-10 and the sixth guide bracket 15-12 by screws. Moreover, it can be seen from Figure 8 that the outer contour of the opening part of the follower reel 15 is connected to the outer contour of the follower reel, that is, a through-hole is not provided on the follower reel 15 for the opening part. Compared with the through-hole design, this structure of the opening part is easier to arrange the guide shafts 15-3 arranged in an arc shape and is also more convenient for threading the cable. It should be noted that the arc size of the arrangement of the guide shafts 15-3 in the opening part of the follower reel 15 can be flexibly adjusted according to the specific bending radius of the cable.

[0068] In this way, the first wire winding groove disk rotates with the driving reel 14. The wire passing through the opening of the driven reel 15 drives the driven reel 15 to rotate through the guide shaft 15-3. The two rows of arc-arranged guide shafts 15-3 can meet the requirement of the wire for the turning radius, thereby reducing the bending angle of the wire, reducing the wear of the wire, and further reducing the communication loss of the wire.

[0069] As a further improvement, referring to Figures 2 to 10 , the above-mentioned spring box, driving reel 14, driven reel 15 and wire winding groove disk 13 are all placed inside the outer shell composed of the first shell 1, the second shell 2, the fourth shell 4, the fifth shell 5 and the sixth shell 19. Specifically, referring to Figure 2 , Figure 6 and Figure 7 , two relatively wide second shells 2 are arranged at a certain distance from the sixth shell 19; two approximately strip-shaped first shells 1 and fifth shells 5 are arranged oppositely on the sides between the second shell 2 and the sixth shell 19; the fourth shell 4 is arranged on the top of the second shell 2 and the sixth shell 19, thus forming the outer shell. Referring to Figure 3 , Figure 4 and Figure 7 , a through hole is opened in the middle of the sixth shell 19. The left end of the central shaft 17 is supported on this through hole through the first shaft sleeve 7, and the flange 6 is fixedly connected to the sixth shell 19 and the central shaft 17 by screws. Referring to Figure 3 and Figure 4 , the right end of the central shaft 17 is fixedly connected to the second shell 2 by screws, and the second wire winding groove disk is also fixedly connected to the second shell 2 by screws, thereby indirectly fixedly connecting the second wire winding groove disk to the central shaft 17. When it is necessary to fix the central shaft when using this automatic wire winding and unwinding device, at this time, only the outer shell needs to be fixed. In this way, the actual use of this automatic wire winding and unwinding device is facilitated.

[0070] Specifically, an outlet hole is opened in the middle of the second shell 2. A wire routing box 3 is fixedly connected to the outside of the second shell 2. The wire passing through the through hole 24 in the innermost circle of the second spiral groove (the through hole 24 in the first spiral groove does not play a role in this automatic wire winding and unwinding device. The second wire winding groove disk and the first wire winding groove disk are designed in the same way and also have a through hole 24, and the second wire winding groove disk and the first wire winding groove disk are both processed by the same mold, which can save costs) needs to pass through the outlet hole in the middle of the second shell 2 and be fixed (such as fixed with a cable tie) at the outlet hole in the middle of the second shell 2, and then pass through the wire routing box 3 and be connected to the communication device. Moreover, when passing through the connection through hole 23 of the driving reel 14 from the opening 22 of the first spiral groove, it is also first fixed (such as fixed by a cable tie) at the connection through hole and then wound onto the driving reel.

[0071] More specifically, referring to Figure 5 andFigure 6 , the outer shell cover is provided with an outer shell cover wire outlet A. One end of the cable (the cable is not shown) wound around the first wire groove disc passes through the opening 22 at the outermost circle of the first spiral groove, then passes through the connection through hole 23 of the driving reel 14 and is wound around the driving reel 14 (first fixed at the connection through hole 23 and then wound around the driving reel 14, and the winding length should meet the length required for the communication tower to rise), and then passes through the outer shell cover wire outlet A and is connected to the communication tower; the outer shell cover is provided with an outer shell cover wire outlet B at a position close to the wire routing box 3 (i.e., the wire outlet hole provided in the middle of the above-mentioned second housing 2). The other end of the cable wound around the first wire groove disc passes through the opening of the follower reel 15 from the innermost circle of the first spiral groove, and then sequentially passes through the through hole at the innermost circle of the spiral groove of the second wire groove disc and the outer shell cover wire outlet B, and is connected to the communication equipment on the communication vehicle through the wire routing box 3. In this way, when the communication tower rises and falls, the cable inside the driving reel 14 can reliably alternate between the first spiral groove and the second spiral groove without pulling the external cable.

[0072] Moreover, referring to Figure 4 and Figure 5 , two limiting members are provided at a position in the inner cavity of the outer shell cover close to the wire outlet A. The limiting member is composed of a limiting shaft 20 and a limiting shaft sleeve 21 on the outer peripheral side of the limiting shaft 20. The limiting shaft sleeve 21 can rotate around the axis of the limiting shaft 20. The cable wound around the driving reel 14 passes through the gap between the two limiting members and then passes through the wire outlet A and is finally connected to the communication tower. In this way, when the cable directly passes through the wire outlet A, the wire outlet A scratches the cable, protecting the cable. Of course, the number of limiting members can exceed two. For example, more than two of the above-mentioned limiting members are arranged in two rows, and the same effect can be achieved. In addition, it should be noted that the above-mentioned limiting member also plays a guiding role for the cable passing through the wire outlet A.

[0073] It should be noted that the above-mentioned cable includes a power line and a signal line. The number of the power line and the signal line is the same as the number required by the upper-mounted equipment of the communication tower. The multi-strand power line and signal line are braided to form a single cable. Multiple cables are braided into a row, avoiding damage to the cable when a single cable is subjected to a large tensile force.

[0074] In summary, the above is only the preferred embodiment of the present invention and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A plug-free winding type automatic wire collecting and releasing device, characterized in that, It includes a central axis, a spring box, a driving reel, a follower reel, and a first wire winding groove disc that are coaxially and rotationally connected to the central axis; A chamber of the spring box accommodates a clockwork spring with one end fixed to the central axis and the other end fixed to the inner wall of the chamber; The driving reel is coaxially and loosely sleeved on the central axis and is fixedly connected to the spring box; The follower reel is arranged in a central through hole of the driving reel and is provided with an opening part penetrating through both end faces of the follower reel; A first wire winding groove disc and a second wire winding groove disc are symmetrically arranged at both axial ends of the follower reel respectively; wherein the first wire winding groove disc is clamped between the spring box and the follower reel and is fixedly connected to the spring box, and a first spiral groove for accommodating a cable is arranged on the end face of the first wire winding groove disc opposite to the follower reel; A second spiral groove for accommodating a cable is arranged on the end face of the second wire winding groove disc opposite to the follower reel, and the second wire winding groove disc is fixedly connected to the central axis; After the cable is fully wound in the first spiral groove, one end is wound onto the driving reel and then connected to a communication tower, and the other end passes through the opening part, then passes through a through hole in the innermost circle of the second spiral groove and is connected to a communication device on a mobile communication vehicle.

2. The plug-free winding type automatic wire rewinding and releasing device according to claim 1, characterized in that A connection through hole is arranged on the driving reel; After the cable is fully wound in the first spiral groove, one end first passes out from an opening in the outermost circle of the first spiral groove, then passes through the connection through hole and is wound onto the driving reel and then connected to the communication tower.

3. The unplug-free winding type automatic wire rewinding and releasing device according to claim 2, characterized in that, The cable passing through the connection through hole is fixed and then wound onto the driving reel; The cable passing out from the through hole in the innermost circle of the second spiral groove is fixed and then connected to the communication device on the mobile communication vehicle.

4. The unplug-free winding type automatic wire rewinding and releasing device according to claim 1, characterized in that, In the opening part, two rows of guide shafts are arranged at a set distance and in an arc shape along the radial direction of the follower reel; A guide shaft sleeve capable of rotating relative to the axis of the guide shaft is sleeved on the outer peripheral side of the guide shaft.

5. The plug-free winding type automatic wire collecting and releasing device according to claim 4, wherein, A support member is further arranged in the opening part; A support shaft is arranged in the opening part through the support member.

6. The plug-free winding type automatic wire winding and unwinding device according to claim 1, characterized in that, The outer contour of the opening part is connected to the outer contour of the follower reel.

7. The unplug-free winding type automatic wire rewinding and releasing device according to claim 1, characterized in that, Support shafts are evenly arranged along the circumferential direction between the two side plates at both axial ends of the follower reel; Both ends of the support shaft are fixedly connected to the two end faces of the follower reel respectively, and a support shaft sleeve in contact with the inner wall surface of the driving reel is sleeved on the outer peripheral side of the support shaft; When the driving reel rotates around the axis of the central axis, the support shaft sleeve can rotate relative to the axis of the support shaft.

8. The plug-free winding type automatic wire retracting and releasing device according to any one of claims 1 to 7, characterized in that, It further includes an outer shell cover; Both ends of the central axis are fixedly connected to both sides of the outer shell cover, so that the spring box, the driving reel, the first wire winding groove disc, the follower reel, and the second wire winding groove disc are all accommodated inside the outer shell cover; The outer shell cover is provided with an outer shell cover wire outlet A and an outer shell cover wire outlet B; the cable wound onto the driving reel passes through the outer shell cover wire outlet A and is connected to the communication tower; the cable passing out from the through hole in the innermost circle of the second spiral groove passes through the outer shell cover wire outlet B and is connected to the communication device.

9. The plug-free winding type automatic wire rewinding and unreeling device according to claim 8, wherein, At least two limiting members are provided at a position in the inner cavity of the outer shell cover close to the wire outlet A; All of the limiting members can rotate around their own axes; The cable wound on the driving reel first passes through between the limiting members, then passes through the wire outlet A of the outer shell cover, and finally is connected to the communication tower.

10. The unplug-free winding type automatic wire rewinding and releasing device according to claim 9, wherein, The second wire groove disc is fixedly connected to the outer shell cover to realize the fixed connection with the central shaft.

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