CN115490098A

CN115490098A - Plug-free wire winding type automatic wire winding and unwinding device

Info

Publication number: CN115490098A
Application number: CN202211154231.9A
Authority: CN
Inventors: 宣俊杰; 陈正茂; 明德升; 刘羽; 金晶; 赵亭军; 桂晓明; 白洋
Original assignee: Beijing Aerospace Science & Industry Century Satellite Hi Tech Co ltd
Current assignee: Beijing Aerospace Science & Industry Century Satellite Hi Tech Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-12-20

Abstract

The invention discloses an insertion-and-pull-free winding type automatic take-up and pay-off device, which belongs to the technical field of cable take-up and pay-off in the communication industry, and comprises a central shaft, a spring box, a follow-up winding drum and a first winding groove disc, wherein the spring box is coaxially and rotatably connected with the central shaft; the driving winding drum is coaxially sleeved on the central shaft in a hollow manner and is fixedly connected with the spring box; the follow-up reel is arranged in the middle through hole of the driving reel and is provided with opening parts penetrating through two end faces of the follow-up reel; the axial two ends of the follow-up winding drum are respectively and symmetrically provided with a first winding groove disc and a second winding groove disc. The device utilizes the rotation of follow-up reel to make the cable that is located the inside of initiative reel twine alternately between first wire winding groove dish and second wire winding groove dish when receiving and releasing line, has reached the effect of replacing coaxial rotary joint.

Description

Plug-free wire winding type automatic wire winding and unwinding device

Technical Field

The invention belongs to the technical field of cable winding and unwinding in the communication industry, and particularly relates to a plug-and-pull-free winding type automatic winding and unwinding device.

Background

With the development of communication services, the coverage range of communication signals is wider and wider, however, at present, some places still have no communication signals or the communication signals are very weak, and the mobile communication vehicle can better solve the coverage problem of the communication signals in the places. The mobile communication vehicle is equivalent to a mobile base station, and can fill the places without communication signals or weak signals with communication signals, thereby ensuring normal communication. Such a mobile base station is generally provided with a signal tower on the top, and the signal tower is used for supporting various signal transmitting devices or various signal receiving devices. In order to reduce the shielding of the complex ground to the signal, the mobile communication vehicle can lift the signal tower to be erected in the high altitude far away from the ground when in work, and then the signal tower is lowered to be stored in the vehicle when the mobile communication vehicle stops working.

When the signal tower rises or falls to move, the radio frequency cable and the signal transmitting device for communication, the power cable and the control cable of the signal receiving device need to be synchronously wound and unwound with the rising and falling of the signal tower, and the winding and unwinding device is a device for synchronously winding and unwinding the radio frequency cable, the power cable, the control cable and other cables when the signal tower rises and falls. In order to improve the cost performance of the mobile communication vehicle, various signal transmitting devices and signal receiving devices are arranged on the signal tower as much as possible, and the more the devices are arranged on the signal tower, the more the number of cables such as radio frequency cables, power cables and control cables is. The existing take-up and pay-off device on the mobile communication vehicle has two types:

the first type is a take-up and pay-off device as shown in fig. 1, wherein a cable drum 1-1 rotates around a drum shaft 1-2, releases a cable when rotating anticlockwise, and accommodates the cable when rotating clockwise; the aerial sockets are arranged on the cable drum 1-1, generally, the number of cables corresponds to the number of the aerial sockets one by one, and the number of cables corresponds to the number of the aerial sockets; one end of a cable 1-3 wound on the cable drum is connected with the aviation socket on the cable drum 1-1, and the other end of the cable is connected to the signal tower. An aerial plug of a terminal cable is connected with a corresponding aerial socket on the cable drum 1-1, a transmission channel between the terminal equipment and the signal tower upper equipment is communicated, and the signal tower upper equipment works; the aviation plug of the terminal cable is disconnected with the corresponding aviation socket on the cable drum 1-1, a transmission channel between the terminal equipment and the signal tower loading equipment is cut off, and the signal tower loading equipment cannot work; when the signal tower is lifted and descended, the cable drum 1-1 needs to synchronously rotate to take up and pay off the cable 1-3, if the aerial plug of the terminal cable and the aerial socket on the cable drum 1-1 are in a connection state when the cable drum 1-1 rotates, a plurality of terminal cables can be twisted together, and the aerial socket and the cable can be damaged, so that when the signal tower is lifted and the cable drum synchronously rotates to take up and pay off the cable, the aerial plug of the terminal cable and the aerial socket on the cable drum 1-1 are in a disconnection state, and the terminal cable is fixed on the adapter 1-5 which does not rotate along with the cable drum 1-1. It follows that this solution has the following drawbacks: (1) in order to avoid damage to the aerial plug and the cable, when the cable drum 1-1 rotates synchronously to take up and pay off, the aerial plug of the terminal cable and the aerial socket on the cable drum 1-1 need to be in a disconnected state, and the communication equipment arranged on the signal tower cannot work at the moment; (2) when the signal tower needs to be lifted and the cable drum needs to synchronously rotate to take up and pay off lines each time, whether the aerial plug of the terminal cable is pulled out of the aerial socket on the cable drum needs to be confirmed firstly, after the signal tower is lifted in place and the cable drum stops rotating, the aerial plug of the terminal cable is inserted into the aerial socket on the cable drum to connect a transmission channel between the terminal equipment and the signal tower loading equipment, the operation is complex, and the labor intensity is high.

The second type of take-up and pay-off device adopts a coaxial rotary joint to realize the plug-and-pull-free function of the cable. This solution is too costly, since the coaxial rotary joint is expensive.

The third type take-up and pay-off device adopts a mode that a cable is spirally coiled along the communication tower lifting device, when the communication tower ascends, the cable is in a spiral line expansion mode, and when the communication tower descends, the cable is in a spiral line compression mode. By adopting the mode, the plugging-free function of the cable can be realized, the cable is relatively long in length, the signal loss is relatively large, and the device is suitable for communication equipment with relatively short lifting stroke of a communication tower.

Therefore, at present, no winding and unwinding device can adapt to automatic winding and unwinding of various cables, is free of plugging and pulling, saves labor and reduces communication loss.

Disclosure of Invention

In view of this, the invention provides a plug-free wire-wound automatic take-up and pay-off device, which has the functions of realizing automatic take-up and pay-off of various types of communication cables, avoiding plugging and paying-off, saving labor and reducing communication loss.

The invention adopts the following technical scheme:

a plug-free wire winding type automatic take-up and pay-off device comprises a central shaft, a spring box, a follow-up winding drum and a first wire winding groove disc, wherein the spring box, the follow-up winding drum and the first wire winding groove disc are coaxially and rotatably connected with the central shaft;

the chamber of the spring box contains a clockwork spring, one end of the clockwork spring is fixed with the central shaft, and the other end of the clockwork spring is fixed with the inner wall of the chamber;

the driving winding drum is coaxially sleeved on the central shaft in an empty way and is fixedly connected with the spring box;

the follow-up reel is arranged in a through hole in the middle of the driving reel and is provided with an opening part penetrating through two end faces of the follow-up reel;

a first winding groove disc and a second winding groove disc are symmetrically arranged at two axial ends of the follow-up winding drum respectively; the first winding groove disc is clamped between the spring box and the follow-up winding drum and is fixedly connected with the spring box, and a first spiral groove for accommodating a cable is formed in the end face of the end face, opposite to the end face of the follow-up winding drum, of the first winding groove disc;

a second spiral groove for accommodating a cable is formed in the end face of the second winding groove disc, which is opposite to the end face of the follow-up winding drum, and the second winding groove disc is fixedly connected with the central shaft;

and after the cable is fully wound in the first spiral groove, one end of the cable is wound on the driving winding drum and then is connected with the communication tower, and the other end of the cable penetrates through the opening part and then penetrates out of the through hole at the innermost ring of the second spiral groove to be connected with communication equipment on the mobile communication vehicle.

Furthermore, a connecting through hole is formed in the driving winding drum;

after the cable is fully wound in the first spiral groove, one end of the cable firstly penetrates out of an opening of the outermost ring of the first spiral groove, then penetrates through the connecting through hole, is wound on the driving winding drum, and then is connected with the communication tower.

Further, the cable passing through the connecting through hole is fixed and then wound on the active winding drum;

and the cable penetrating out of the through hole at the innermost circle of the second spiral groove is fixed and then connected with the communication equipment on the mobile communication vehicle.

Furthermore, two rows of guide shafts which are arranged in an arc shape and have a set distance are arranged in the opening part along the radial direction of the follow-up winding drum;

and a guide shaft sleeve which can rotate relative to the axis of the guide shaft is sleeved on the outer peripheral side of the guide shaft.

Furthermore, the opening part is also provided with a support part;

the support shaft is disposed in the opening portion through the support member.

Further, the outer contour of the opening part is connected with the outer contour of the follow-up reel.

Furthermore, support shafts are uniformly arranged between two axial side plates of the follow-up drum along the circumferential direction;

two ends of the supporting shaft are respectively fixedly connected with two end surfaces of the follow-up winding drum, and a supporting shaft sleeve which is in contact with the inner wall surface of the driving winding drum is sleeved on the outer peripheral side of the supporting shaft;

the support shaft sleeve can rotate relative to the axis of the support shaft when the driving winding drum rotates around the axis of the central shaft.

Furthermore, the plug-free winding type automatic take-up and pay-off device also comprises a shell cover;

two ends of the central shaft are respectively and fixedly connected with two sides of the outer shell cover, so that the spring box, the driving winding drum, the first winding groove disc, the follow-up winding drum and the second winding groove disc are all accommodated in the outer shell cover;

the shell cover is provided with a shell cover outlet A and a shell cover outlet B; the cable wound on the active winding drum passes through the shell cover outlet A and then is connected with the communication tower; and the cable penetrating out of the through hole at the innermost circle of the second spiral channel passes through the shell cover outlet B and then is connected with the communication equipment.

Furthermore, at least two limiting parts are arranged in the inner cavity of the outer shell cover at positions close to the wire outlet A;

the limiting pieces can rotate around the axes of the limiting pieces;

the cable wound on the active winding drum firstly passes through the limiting parts, then passes through the shell cover wire outlet A and finally is connected with the communication tower.

Furthermore, the second winding slot disc is fixedly connected with the outer shell cover to realize the fixed connection with the central shaft.

Has the beneficial effects that:

(1) According to the plug-free wire-wound automatic take-up and pay-off device, the follow-up winding drum, the first wire winding groove disc and the second wire winding groove disc are coaxially arranged in the middle through hole of the driving winding drum, and the structure is compact; when the communication tower is used, the central shaft is fixed, when the communication tower rises, the cable outside the driving winding drum synchronously unfolds along with the rising of the communication tower from a winding state, the driving winding drum rotates around the central shaft, the spring box fixedly connected with the driving winding drum and the first winding groove disc also synchronously rotate around the central shaft, at the moment, the clockwork spring in the spring box synchronously winds to store energy, the cable penetrating through the opening part of the follow-up winding drum rotates along with the first winding groove disc and drives the follow-up winding drum to rotate around the central shaft, and then the cable wound in the first spiral groove is fully wound into the second spiral groove;

when the communication tower descends, a clockwork spring in the spring box releases energy, the spring box, the driving winding drum fixedly connected with the spring box and the first winding groove disc are driven to rotate reversely, the cables in the unfolded states are synchronously wound on the driving winding drum along with the descending of the communication tower, the cables penetrating through the opening part of the follow-up winding drum rotate reversely along with the first winding groove disc, the cables penetrating through the opening part of the follow-up winding drum drive the follow-up winding drum to rotate reversely around the central shaft, and then the cables wound on the second winding groove disc are wound into the first spiral groove.

Therefore, in the ascending or descending process of the communication tower, the active winding drum in the plug-free automatic wire take-up and pay-off device utilizes the rotation of the follow-up winding drum to lead the cable which is positioned in the active winding drum and does not directly participate in wire take-up and pay-off to be alternately wound between the spiral grooves of the first winding groove disc and the second winding groove disc, so as to replace a coaxial rotary joint to realize the functions of inputting the cable (one end of the finger cable is connected with communication equipment on a communication vehicle) and inserting and pulling-free aerial plug-free, the cost is obviously reduced, and the economic benefit is good; meanwhile, the problems that the length of the cable is relatively long and the signal loss is relatively large due to the fact that the cable is spirally wound along the communication tower lifting device in the traditional mode can be solved;

moreover, according to the principle of the automatic take-up and pay-off device, the driving winding drum is equivalent to a fixed pulley, the follow-up winding drum is equivalent to a movable pulley, the cable directly participating in take-up and pay-off on the driving winding drum rotates for two circles, and the cable in the first winding groove disc and the cable in the second winding groove disc only rotate for one circle, so that the length required by the cable in the driving winding drum is reduced, and the communication loss value is reduced.

(2) According to the plug-and-pull-free winding type automatic take-up and pay-off device, two rows of guide shafts which are arranged in an arc shape at intervals are arranged in the opening part of the follow-up reel along the radial direction of the follow-up reel, and the guide shaft sleeve which can rotate relative to the axis of the guide shaft is sleeved on the outer peripheral side of each guide shaft, so that the requirement of a cable on the turning radius can be met, the bending angle of the cable is reduced, the abrasion of the cable is reduced, and the communication loss of the cable can be further reduced.

(3) According to the plug-and-pull-free winding type automatic take-up and pay-off device, the outer contour of the opening part of the follow-up reel is connected with the outer contour of the follow-up reel, so that the guide shaft and the guide shaft sleeve can be conveniently arranged at the opening part, and a cable can be conveniently threaded.

(4) According to the plug-and-pull-free winding type automatic take-up and pay-off device, the active winding drum is fixedly connected with the spring box only at one end close to the spring box, namely the stress characteristic of the active winding drum is equivalent to that of the cantilever beam, the supporting shafts are uniformly arranged between the two side plates of the follow-up winding drum along the circumferential direction, the supporting shaft sleeve capable of being in contact with the inner wall surface of the active winding drum is sleeved on the outer circumferential side of the supporting shaft, and the supporting shaft sleeve can rotate relative to the axis of the supporting shaft when the active winding drum rotates around the central shaft, so that the supporting shaft plays a supporting role on the active winding drum, the active winding drum is uniformly stressed, and the reliability of the device is improved.

(5) According to the plug-free wire winding and unwinding device, the spring box, the driving winding drum, the first wire winding groove disc, the follow-up winding drum and the second wire winding groove disc are all accommodated in the shell cover, the spring box, the driving winding drum, the first wire winding groove disc, the follow-up winding drum and the second wire winding groove disc are not easy to damage, the cable can be prevented from being damaged by rainwater, meanwhile, when the automatic wire winding and unwinding device is used, a central shaft needs to be fixed, only the shell cover needs to be fixed, and the practical use of the automatic wire winding and unwinding device is facilitated.

(6) The invention provides a plug-free wire-wound automatic take-up and pay-off device, wherein at least two limiting pieces capable of rotating around a rotating shaft of the device are arranged at positions, close to a wire outlet A, of an inner cavity of an outer shell cover, one end of a cable wound on a driving winding drum penetrates through the limiting pieces at intervals, then penetrates out of the wire outlet A and is finally connected with a communication tower, the problem that the wire outlet scratches the cable when the cable directly penetrates out of the wire outlet A is avoided, the cable is protected, and the limiting pieces play a role in guiding the cable.

Drawings

Fig. 1 is a schematic diagram of a conventional take-up and pay-off device on a first mobile communication vehicle described in the background art;

FIG. 2 is a view of a wound-rotor automatic take-up and pay-off device according to an embodiment of the present invention at an end away from a spring case;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 3;

FIG. 6 is a cross-sectional view taken along line D-D of FIG. 3;

FIG. 7 is a view of a wound-rotor automatic take-up and pay-off device near one end of a spring case according to an embodiment of the present invention;

FIG. 8 isbase:Sub>A schematic view of the follower roll of FIG. 3, with the follower roll shown in elevation on the left and in cross-section along line A-A in elevation on the right;

FIG. 9 is a schematic view of the mounting of the follower roll open support of FIG. 3;

fig. 10 is a schematic view of the first winding channel disc of fig. 3, with the first winding channel disc in front elevation at the far left, the first winding channel disc in side elevation in the middle, and the first winding channel disc in rear elevation at the far right.

Wherein: 1-a first housing; 2-a second housing; 3-a wiring box; 4-a fourth shell; 5-a fifth shell; 6-a flange plate; 7-a first sleeve; 8-a first clamp spring; 9-spring box cover plate; 10-a clockwork spring; 11-spring case spool; 12-a connecting plate; 13-winding groove disc; 14-active reel; 15-follow-up reel; 15-1-supporting the shaft; 15-2-follow-up reel left plate; 15-3-guide shaft; 15-4-guide shaft sleeve; 15-5-follow-up reel right plate; 15-6-support shaft sleeve; 15-7-a first guide bracket; 15-8-a second guide bracket; 15-9-a third guide bracket; 15-10-a fourth guide bracket; 15-1-a fifth guide bracket; 15-12-sixth orientation brackets; 16-a second clamp spring; 17-a central axis; 18-a second bushing; 19-a sixth housing; 20-a limiting shaft; 21-limiting shaft sleeve.

Detailed Description

The invention is described in detail below by way of example with reference to the accompanying drawings.

As shown in fig. 2 to 10, an automatic wire winding and unwinding device without plug-in and pull-out includes a central shaft 17, a spring box coaxially and rotatably connected with the central shaft 17 (i.e. capable of rotating around the central shaft 17), a follower winding drum 15, and a first winding slot disc, wherein:

as shown in fig. 3 and 4, the spring case includes a spring case reel 11 and a spring case cover plate 9, the spring case reel 11 is circular and coaxially sleeved outside the central shaft 17, a spring slot is provided on an inner wall of the spring case reel 11, an outer end of the spring 10 accommodated inside the spring case cavity is fixed on the spring slot by a screw, and an inner end of the spring 10 is fixed on the slot provided on the central shaft 17 by a screw. A through hole is formed in the middle of the spring box cover plate 9, the spring box cover plate 9 is fixedly connected with the spring box winding drum 11 on the right side of the spring box cover plate 9 through a screw, and the spring box cover plate 9 is rotatably connected with the central shaft 17 through the first shaft sleeve 7 (namely, 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 is designed with two clamp spring grooves for mounting clamp springs and a clamp groove for fixing the clockwork spring 10, a through hole is formed in the center of the connecting plate 12, the central shaft 17 penetrates through a central opening of the connecting plate 12 (namely, the connecting plate 12 is sleeved on the central shaft 17 through the central opening and is positioned on the right side of the spring box winding drum 11), the first clamp spring 8 is mounted in the clamp spring groove on the left side of the connecting plate 12, the clockwork spring 10 is limited from moving rightwards, and the spring box winding drum 11 is fixed on the connecting plate 12 through screws.

As shown in fig. 3 and 4, the driving winding drum 14 is coaxially sleeved on the central shaft 17, and the left end surface of the driving winding drum 14 is fixedly connected to the spring box winding drum 11 through the connecting plate 12, specifically, the left end surface of the driving winding drum 14 is fixedly connected to the connecting plate 12 through a screw, so as to achieve the purpose of fixedly connecting the driving winding drum 14 and the spring box, and thus, the synchronous rotation of the driving winding drum 14 and the spring box is realized. More specifically, when the communication tower is lifted, the outgoing direction of the cable (not shown) on the driving winding drum 14 is selected to be positive, so that the clockwork spring 10 is wound in the spring box in the positive direction, and thus when the communication tower needs to be led out, the cable wound on the outer circumference of the driving winding drum 14 is synchronously unwound along with the lifting of the communication tower, the driving winding drum 14 is rotated, and the spring box is driven to rotate through the connecting plate 12, so that the clockwork spring 10 in the spring box stores energy.

Referring to fig. 3, 4 and 8, the follower winding drum 15 is disposed in the central through hole of the driving winding drum 14 and is rotatably connected to the central shaft 17 by a second bushing 18 disposed in the central through hole of the follower winding drum 15. Specifically, the follow-up reel 15 comprises a follow-up reel left plate 15-2 and a follow-up reel right plate 15-5 which are opposite in position and provided with through holes in the middle, and a second shaft sleeve 18 is sleeved on the outer peripheral side of a central shaft 17 and limited by a second clamp spring 16 to form a rotary kinematic pair. Moreover, support shafts 15-1 are uniformly arranged between two axial side plates of the follow-up reel 15, namely between a left plate 15-2 of the follow-up reel and a right plate 15-5 of the follow-up reel, along the circumferential direction, two ends of each support shaft 15-1 are respectively fixedly connected with two end faces of the follow-up reel 15 (namely the left plate 15-2 of the follow-up reel and the right plate 15-5 of the follow-up reel) through screws, and a small section of support shaft sleeve 15-6 capable of being in rolling contact with the inner wall surface of the driving reel 14 is sleeved on the outer circumferential side of each support shaft 15-1, so that when the driving reel 14 rotates around the axis of the central shaft 17, the support shaft sleeve 15-6 can also rotate relative to the axis of the support shaft 15-1, the driving reel 14 is uniformly stressed, and the reliability of the device is improved. Referring to fig. 3, 4, 5, 8 and 9, the follower cylinder 15 is provided with an opening penetrating both end surfaces of the follower cylinder 15 (i.e., penetrating the follower cylinder left plate 15-2 and the follower cylinder right plate 15-5).

Referring to fig. 3, 4, 5 and 10, the winding slot disc 13 includes a first winding slot disc and a second winding slot disc symmetrically disposed at two axial ends of the follow-up reel, respectively, wherein the first winding slot disc is clamped between the spring box and the follow-up reel 15 (more specifically, the first winding slot disc is clamped between the connection plate 12 and the left plate 15-2 of the follow-up reel), and is fixedly connected to the connection plate 12 through a screw, so as to achieve the purpose of fixedly connecting the first winding slot disc and the spring box, and in addition, a first spiral groove for accommodating a cable is disposed at an end surface of an opposite end of the first winding slot disc and the follow-up reel (the diameter of the spiral groove is adjusted according to the diameter of the cable, and the number of turns of the spiral groove is adjusted according to the number of turns required by the actual operation of the automatic take-up and pay-off device). Furthermore, the first winding channel disc is also provided with a first hub 7 in the middle for rotational connection with a central shaft 17. The end face of the second spool opposite the follower winding 15 is provided with a second helical groove for receiving the cable and is fixedly connected to the central shaft 17.

It should be noted that, as is apparent from fig. 3 and 4, although the spring-housing cover 9 and the first winding-slot disc are both rotatably connected to the central shaft 17 via the first bushing 7, the first bushing 7 used for the spring-housing cover 9 and the first winding-slot disc is not the same bushing, and because the first winding-slot disc, the driving winding drum 14 and the spring-housing winding drum 11 form a whole body rotating together around the central shaft 17, and the follower winding drum 15 is another relatively independent part rotating around the central shaft 17, the bushing is only named by the first bushing 7 and the second bushing 18.

In the automatic winding and unwinding device, the arrangement mode of the cable is as follows: after the cable is fully wound in the first spiral groove, one end of the cable is wound on the active winding drum 14 (the length of the cable wound on the active winding drum 14 needs to meet the length required by the rising of the communication tower) and then is connected with the communication tower, and the other end of the cable firstly passes through the opening part, then passes through the through hole at the innermost circle of the second spiral groove and then is connected with the communication equipment on the mobile communication vehicle.

As can be seen from fig. 3 and 4, the first spiral groove and the second spiral groove are located inside the active winding drum 14, so that the cable of the entire automatic take-up and pay-off device can be divided into a cable outside the active winding drum 14 and a cable inside the active winding drum 14, when the automatic take-up and pay-off device is used, the central shaft 17 is fixed, when the communication tower rises, the cable outside the active winding drum 14 is synchronously unwound with the rise of the communication tower from the winding state, the active winding drum 14 rotates around the central shaft 17, and the spring box fixedly connected with the active winding drum 14 and the first winding groove disc also synchronously rotate around the central shaft 17, at this time, the spring 10 in the spring box synchronously winds the stored energy, the cable passing through the opening part of the follow-up winding drum 15 rotates along with the first winding groove disc and drives the follow-up winding drum 15 to rotate around the central shaft 17, and the cable in the first spiral groove of the first winding groove disc is wound into the second spiral groove of the second winding groove disc; when the communication tower descends, the clockwork spring 10 in the spring box releases energy to drive the spring box, the driving winding drum 14 fixedly connected with the spring box and the first winding groove disc to rotate reversely together, so that the cable in the external unwinding state of the driving winding drum synchronously winds on the driving winding drum 14 along with the descending of the communication tower, the cable passing through the opening part of the follow-up winding drum 15 rotates reversely along with the first winding groove disc, the cable passing through the opening part of the follow-up winding drum 15 drives the follow-up winding drum 15 to rotate reversely around the central shaft 17, and the cable in the second winding groove disc is rewound into the first spiral groove of the first winding groove disc.

More specifically, referring to fig. 5 and 10, the outermost circle of the first spiral groove is provided with an opening 22, referring to fig. 5, the active drum 14 is provided with a connecting through hole 23, and after the cable is fully wound in the first spiral groove, one end of the cable firstly passes through the opening 22 of the outermost circle of the first spiral groove, then passes through the connecting through hole 23 to be wound on the active drum, and finally is connected with the communication tower. The opening 22 and the connecting through hole 23 serve to conveniently communicate the cable inside the active reel 14 with the cable outside the active reel 14.

As an improvement, two rows of guide shafts 15-3 which are arranged in an arc shape at intervals are arranged in the opening part of the follow-up reel 15 along the radial direction of the follow-up reel 15, a guide shaft sleeve 15-4 which can rotate relative to the axis of the guide shaft 15-3 is sleeved on the outer peripheral side of the guide shaft 15-3, and the cable which passes through the opening part of the follow-up reel 15 passes through the two rows of guide shafts 15-3 which are arranged in the arc shape (namely, the set distance can lead the cable to pass through and is not clamped by the two rows of guide shafts 15-3). More specifically, referring to fig. 3, 4, 8 and 9, a first guide bracket 15-7, a second guide bracket 15-8 and a third guide bracket 15-9 fixed to a left plate 15-2 of the follower roll are provided at an opening portion of the follower roll 15, wherein the second guide bracket 15-8 is provided at a position closer to a central through hole of the follower roll 15, and the first guide bracket 15-7 and the third guide bracket 15-9 are provided closer to an outer edge of the follower roll 15, a bottom portion of the guide shaft 15-3 closer to the left plate 15-2 of the follower roll is fixed to the second guide bracket 15-8 by screws, and a top portion thereof is fixed to the first guide bracket 15-7 and the third guide bracket 15-9 by screws, and similarly, a fourth guide bracket 15-10, a fifth guide bracket 15-11 and a sixth guide bracket 15-12 fixed to a right plate 15-5 of the follower roll are provided at an opening portion of the follower roll 15, wherein the fifth guide bracket 15-11 is provided at a position closer to the central through hole 15 of the follower roll 15, and the sixth guide bracket 15-12 are fixed to a top portion of the guide shaft 15-10, and the guide bracket 15-12 are provided closer to the fourth guide bracket 15-10, and the guide bracket 15-12. Moreover, as can be seen from fig. 8, the outer contour of the opening portion of the follow-up drum 15 is connected with the outer contour of the follow-up drum, i.e. the opening portion of the follow-up drum 15 is not provided with a through hole on the follow-up drum 15, compared with the design of the through hole, the structure of the opening portion is easier to arrange the guide shaft 15-3 which presents the arc arrangement, and is more convenient for the cable to be threaded. It should be noted that the arc of the guide shaft 15-3 arranged in the opening of the follower roller 15 can be flexibly adjusted according to the specific bending radius of the cable.

Therefore, the first winding groove disc rotates along with the driving winding drum 14, the cable at the opening part of the follow-up winding drum 15 drives the follow-up winding drum 15 to rotate through the guide shafts 15-3, and the guide shafts 15-3 distributed in two rows of arcs can meet the requirement of the cable on the bending radius, so that the bending angle of the cable is reduced, the abrasion of the cable is reduced, and the communication loss of the cable is further reduced.

As a further improvement, referring to fig. 2 to 10, the spring case, the driving winding drum 14, the driven winding drum 15 and the winding slot disc 13 are all accommodated in the interior of the outer casing cover composed of the first casing 1, the second casing 2, the fourth casing 4, the fifth casing 5 and the sixth casing 19, specifically, referring to fig. 2, 6 and 7, the two wider second casings 2 and the sixth casings 19 are arranged at a certain distance from each other; the two first shells 1 and the fifth shell 5 which are approximately strip-shaped are oppositely arranged at the side part between the second shell 2 and the sixth shell 19; the fourth housing 4 is disposed on top of the second housing 2 and the sixth housing 19, thus constituting an outer shell cover. Referring to fig. 3, 4 and 7, a through hole is formed in the middle of the sixth housing 19, the left end of the central shaft 17 is supported by the first shaft sleeve 7 through the through hole, and the flange 6 is fixedly connected with the sixth housing 19 and the central shaft 17 through screws. Referring to fig. 3 and 4, the right end of the center shaft 17 is fixedly coupled to the second housing 2 by screws, and the second slot winding disc is also fixedly coupled to the second housing 2 by screws, thereby indirectly fixedly coupling the second slot winding disc to the center shaft 17. When the automatic take-up and pay-off device is used, the central shaft needs to be fixed, at the moment, only the outer shell cover needs to be fixed, and therefore the automatic take-up and pay-off device is convenient to use actually.

Specifically, a wire outlet hole is formed in the middle of the second housing 2, the wire distribution box 3 is fixedly connected to the outer side of the second housing 2, the through hole 24 in the innermost ring of the second spiral groove (the through hole 24 in the first spiral groove does not work in the automatic wire winding and unwinding device), the through hole 24 is also formed in the same design of the second winding groove disc and the first winding groove disc, and the second winding groove disc and the first winding groove disc are both formed by processing the same die, so that the cost can be saved). Furthermore, the first spiral groove opening 22 is threaded out of the connecting through-hole 23 of the active winding drum 14, and is fixed (e.g., by a strap) at the connecting through-hole before being wound onto the active winding drum.

More specifically, referring to fig. 5 and 6, the outer shell cover is provided with an outer shell cover outlet a, one end of a cable (not shown) fully wound on the first winding slot disc passes through an opening 22 of the outermost ring of the first spiral slot, then passes through a connecting through hole 23 of the active winding drum 14, then is wound on the active winding drum 14 (the cable is fixed at the connecting through hole 23 and then is wound on the active winding drum 14, and the wound length is required to meet the length required by the rising of the communication tower), then passes through the outer shell cover outlet a, and then is connected with the communication tower; the outer shell cover is provided with an outer shell cover outlet B (namely a wire outlet hole formed in the middle of the second shell 2) at a position close to the wiring box 3, the other end of the cable wound on the first winding groove disc penetrates through the opening part of the follow-up winding drum 15 from the innermost ring of the first spiral groove, then sequentially penetrates through the through hole of the innermost ring of the spiral channel of the second winding groove disc and the outer shell cover outlet B, and is connected with communication equipment on the communication vehicle after passing through the wiring box 3. In this way, the cable inside the active drum 14 can reliably alternate between the first helical groove and the second helical groove as the tower ascends and descends, without pulling on the external cable.

Furthermore, referring to fig. 4 and 5, two limiting parts are disposed in the inner cavity of the housing cover near the wire outlet a, each limiting part is formed by a limiting shaft 20 and a limiting shaft sleeve 21 disposed 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, and the cable wound around the driving drum 14 passes through the interval between the two limiting parts, then passes out from the wire outlet a, and finally is connected to the communication tower. Of course, the number of the limiting members may be more than two, for example, two rows of more than two limiting members may also achieve the above-mentioned effects. In addition, it should be noted that the above-mentioned stopper also plays a role of guiding the cable that passes through the outlet a.

It is noted that the cable described above contains power and signal wires in the same number as required by the equipment on which the tower is mounted, and that the plurality of strands of power and signal wires are woven to form a single cable. A plurality of cables are woven into one row, so that damage to the cables caused by large tension of a single cable is avoided.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A plug-free wire winding type automatic take-up and pay-off device is characterized by comprising a central shaft, a spring box, a follow-up winding drum and a first wire winding groove disc, wherein the spring box, the follow-up winding drum and the first wire winding groove disc are coaxially and rotatably connected with the central shaft;

the chamber of the spring box is provided with a clockwork spring, one end of the clockwork spring is fixed with the central shaft, and the other end of the clockwork spring is fixed with the inner wall of the chamber;

a second spiral groove for accommodating a cable is formed in the end face of the end, opposite to the follow-up winding drum, of the second winding groove disc, and the second winding groove disc is fixedly connected with the central shaft;

2. The plug-free wire-wound automatic take-up and pay-off device as claimed in claim 1, wherein the active reel is provided with a connecting through hole;

3. The automatic winding and unwinding device of claim 2, wherein the cable passing through the connecting through hole is fixed and then wound on the active reel;

4. The plug-free wire-wound automatic take-up and pay-off device as claimed in claim 1, wherein two rows of guide shafts are arranged in the opening part along the radial direction of the follow-up reel at a set distance and in an arc shape;

5. The plug-free wire-wound automatic take-up and pay-off device as claimed in claim 4, wherein the opening is further provided with a support member;

the support shaft is disposed at the opening portion through the support member.

6. The plug-free spooling-type automatic pay-off and take-up device as claimed in claim 1, wherein an outer profile of said opening is connected to an outer profile of said follower roller.

7. The plug-free winding type automatic take-up and pay-off device as claimed in claim 1, wherein a support shaft is uniformly provided between two axial side plates of the follow-up reel along a circumferential direction;

two ends of the supporting shaft are respectively and fixedly connected with two end faces of the follow-up reel, and a supporting shaft sleeve which is in contact with the inner wall face of the driving reel is sleeved on the outer peripheral side of the supporting shaft;

8. The plug-free spooled automatic winder according to any one of claims 1 to 7, further comprising a housing cover;

9. The plug-free automatic wire winding and unwinding device according to claim 8, wherein the inner cavity of the housing cover is provided with at least two stoppers at positions close to the outlet a;

the limiting pieces can rotate around the axes of the limiting pieces;

the cable wound on the active winding drum firstly passes through the limiting pieces, then passes through the shell cover wire outlet A and finally is connected with the communication tower.

10. The plug-free wire-wound automatic pay-off and take-up device as claimed in claim 8 or 9, wherein the second wire-wound groove disc is fixedly connected with the central shaft by being fixedly connected with the outer housing cover.