Single-layer winding take-up and pay-off device

Abstract

The utility model relates to the technical field of take-up and pay-off devices, and particularly discloses a single-layer winding take-up and pay-off device which comprises a shell assembly, a winding assembly and a driving assembly. The winding assembly and the driving assembly are both arranged in the shell assembly. The winding assembly comprises a winding wheel, a cable reel base wheel, a lead screw and a sliding ring. The winding wheel comprises a communicating groove and a fixing part, the fixing part is installed on the inner side of the winding wheel, the cable reel base wheel is arranged at one end of the winding wheel, the degree of freedom of axial linear motion exists between the cable winding wheel and the cable reel base wheel, and the lead screw is installed on the inner side of the other end of the winding wheel and is in threaded connection with the winding wheel. And the slip ring is in transmission connection with the cable tray base wheel. The device is used for releasing and collecting the wiring needed by the lifting mechanism, and solves the problems that in the prior art, the cable is prone to clamping stagnation due to random winding, and the appearance size is large due to multi-layer winding.

Description

Technical Field

[0001] The utility model relates to the technical field of wire-winding and -releasing devices, and in particular mainly relates to a single-layer winding wire-winding and -releasing device. Background Art

[0002] In industrial automation, logistics and transportation, transportation tracks and various types of mechanical equipment, lifting mechanisms are core components and are widely used in scenarios such as material handling, equipment installation, and personnel transportation. During operation, these mechanisms often require a wiring system to provide power or signal transmission to drive or monitor their operating status. However, as the height of the lifting mechanism changes, the length requirement of the wiring system (mainly cables or wires) also changes, so some cable management tools are needed. The retractable cable device is an efficient cable management tool, but the current retractable cable device is randomly wound when retracting the cable, which makes it easy to get stuck, and the multiple windings result in a larger external size. In view of this, there is an urgent need to improve the existing retractable cable device. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the present invention provides a single-layer winding and retracting device for releasing and retracting the wiring required by some lifting mechanisms. This device solves the problems of random winding of cables, which can easily cause them to become stuck, and multi-layer winding, which can lead to large external dimensions. This is achieved through the following technical solutions:

[0004] A single-layer winding and retracting device comprises: a shell assembly, a winding assembly and a driving assembly; the winding assembly and the driving assembly are both arranged inside the shell assembly; the winding assembly comprises a winding wheel, a cable drum base wheel, a lead screw and a slip ring; the winding wheel comprises a connecting groove and a fixing portion, the fixing portion is installed on the inner side of the winding wheel, the cable drum base wheel is arranged at one end of the winding wheel and there is freedom of axial linear motion between the cable winding wheel and the cable drum base wheel, the lead screw is installed on the inner side of the other end of the winding wheel and is threadedly connected to the winding wheel, and the slip ring is transmission-connected to the cable drum base wheel; the driving assembly comprises a motor and a harmonic gear reducer, the motor is fixed on the inner side of the base assembly, the harmonic gear reducer is installed on the output shaft of the motor, and the harmonic gear reducer is connected to the cable drum base wheel.

[0005] Preferably, protrusions are provided on both sides of the winding wheel, and a channel is formed between the connecting groove and the protrusion on one side, and the channel is used for the cable to pass through.

[0006] Preferably, the pitch of the lead screw is equal to the diameter of the cable.

[0007] Preferably, the shell assembly includes a base, a fixing frame, a rain cover, a protective cover and a mounting plate. The base is provided with a fixing frame, rain covers are installed at both ends of the fixing frame, a cable port is opened at one end of the rain cover, the protective cover is arranged on one side of the fixing frame, and the mounting plate is arranged on the other side of the fixing frame.

[0008] Preferably, the winding assembly further comprises a guide wheel, support seats are provided at both ends of the guide wheel, the guide wheel can rotate relative to the support seats, and the support seats are mounted on the base.

[0009] Preferably, the harmonic gear reducer includes a fixed rigid wheel, a flexible wheel, a wave generator, an output rigid wheel, an output part and a shell cover; the wave generator is installed on the output shaft of the motor, the wave generator is arranged inside the flexible wheel, the flexible wheel is meshed and connected with the fixed rigid wheel, the output rigid wheel is meshed and connected with the flexible wheel, the output part and the output rigid wheel are fixedly connected, and the shell cover is fixed on the side of the fixed rigid wheel close to the output part.

[0010] Preferably, a flexible bearing is provided between the wave generator and the flexspline.

[0011] Preferably, the number of teeth of the fixed rigid wheel is greater than the number of teeth of the flexible wheel, and the number of teeth of the output rigid wheel is equal to the number of teeth of the flexible wheel.

[0012] Preferably, a mounting hole is opened on one side of the fixing frame, and the slip ring is inserted into the protective cover through the mounting hole.

[0013] Preferably, the device further comprises a connector, which is installed at the bottom of the protective cover.

[0014] The beneficial effects of the present invention are:

[0015] (1) This technical solution sets one end of the cable to be fixed on the fixed part of the winding wheel, the cable passes through the connecting groove, and the other end is connected to the lifting mechanism. The cable drum base wheel is driven to rotate by the driving component, so that the winding wheel fixed to the cable drum base wheel rotates, and the winding wheel is threadedly connected to the lead screw, and the winding wheel performs a spiral motion. In this way, the cable also performs a spiral motion with the winding wheel, ensuring a single-layer spiral winding during the cable winding process, avoiding the cable from being stuck due to random winding; at the same time, it also avoids the problem of large external dimensions due to multi-layer winding.

[0016] (2) In this technical solution, a harmonic gear reducer is provided to achieve a deceleration effect through the interaction of components such as a flexible wheel, a fixed rigid wheel and a wave generator. When the motor drives the wave generator to rotate, the flexible wheel is squeezed by the wave generator to produce elastic deformation, and then meshes with the fixed rigid wheel, and deceleration is achieved by relying on the difference in the number of teeth. The harmonic gear reducer converts the high-speed rotation of the motor into the low-speed and high-torque rotation required by the winding assembly, ensuring that the cable can be wound on the winding wheel stably and orderly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 This is a schematic structural diagram of the housing assembly of the present utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 It is a half-section view of the utility model;

[0021] Figure 4 It is a partial structural diagram of the utility model;

[0022] Figure 5 This is a schematic structural diagram of the winding wheel of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the drive assembly of the present utility model;

[0024] Figure 7 for Figure 1 Schematic diagram from another perspective.

[0025] Description of reference numerals:

[0026] 1. Housing assembly; 11. Base; 12. Fixing frame; 13. Rain cover; 131. Cable port; 14. Protective cover; 15. Mounting plate;

[0027] 2. Winding assembly; 21. Winding wheel; 211. Protrusion; 212. Connecting groove; 213. Fixing portion; 22. Cable reel base wheel; 23. Lead screw; 231. End cap; 24. Slip ring; 25. Guide wheel; 251. Support seat;

[0028] 3. Drive assembly; 31. Motor; 311. Motor frame; 32. Harmonic gear reducer; 321. Stator; 322. Flexspline; 323. Wave generator; 324. Output sprocket; 325. Output unit; 326. Housing cover;

[0029] 4. Connector. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0033] Reference Figure 1-3 , this embodiment relates to a single-layer winding and retracting device, which is used for releasing and retracting the wiring required by some lifting mechanisms; specifically, the single-layer winding and retracting device of the present application includes: a housing component 1, a winding component 2 and a drive component 3; the winding component 2 and the drive component 3 are both arranged inside the housing component 1; the winding component 2 includes a winding wheel 21, a cable drum base wheel 22, a lead screw 23, and a slip ring 24; the winding wheel 21 includes a connecting groove 212 and a fixing portion 213, the fixing portion 213 is arranged on the inner side of the winding wheel 21, the cable drum base wheel 22 is arranged at one end of the winding wheel 21 and there is freedom of axial linear motion between the winding wheel 21 and the cable drum base wheel 22, the screw 23 is installed on the inner side of the other end of the winding wheel 21 and is threadedly connected to the winding wheel 21, and the slip ring 24 is transmission-connected to the cable drum base wheel 22; the driving assembly 3 includes a motor 31 and a harmonic gear reducer 32, the motor 31 is fixed on the inner side of the housing assembly 1, the harmonic gear reducer 32 is installed on the output shaft of the motor 31, and the harmonic gear reducer 32 is connected to the cable drum base wheel 22.

[0034] In some embodiments, as Figure 4-5 As shown, protrusions 211 are provided on both sides of the winding wheel 21, and the protrusions 211 ensure that the cable is wound on the winding wheel 21 to prevent the cable from falling out; a channel is formed between the connecting groove 212 and the protrusion 211 on one side, and the channel is used for the cable to pass through.

[0035] It should be noted that when the device is in use, one end of the cable is fixed to the fixed part 213, the cable passes through the channel and the shell assembly 1, and the other end is connected to the lifting mechanism; when the device is working, the driving assembly 3 drives the cable drum base wheel 22 to rotate, and the rotation of the cable drum base wheel 22 drives the winding wheel 21 to perform spiral motion on the screw 23; the cable is attached to the surface of the winding wheel 21 as the winding wheel 21 rotates, and the cable performs spiral motion as the winding wheel 21, and the pitch of the screw 23 is equal to the diameter of the cable, and the axial displacement of the winding wheel 21 per rotation is the diameter of the wound cable, ensuring orderly single-layer spiral winding during the cable winding process, avoiding random winding of the cable and causing cable jamming; at the same time, it also avoids the problem of large external dimensions caused by multi-layer winding.

[0036] In some embodiments, as Figure 1-2 As shown, the housing assembly 1 includes a base 11, a fixed frame 12, a rain cover 13, a protective cover 14 and a mounting plate 15. The base 11 is provided with a fixed frame 12, and rain covers 13 are installed at both ends of the fixed frame 12. A cable opening 131 is opened at one end of the rain cover 13, and the cable enters the winding assembly 2 through the cable opening 131; the protective cover 14 is arranged on one side of the fixed frame 12, and the mounting plate 15 is arranged on the other side of the fixed frame 12. The device can be fixed by a fixing member (not shown) passing through the mounting plate 15 and the lifting mechanism.

[0037] In some embodiments, as Figure 3 As shown, the winding assembly 2 also includes a guide wheel 25, and support seats 251 are provided at both ends of the guide wheel 25. The guide wheel 25 can rotate relative to the support seat 251, and the support seat 251 is installed on the base 11; specifically, the guide wheel 25 is installed on the outside of the cable opening 131, and the cable can enter the winding assembly 2 through the guide wheel 25. The purpose is to assist the device to complete the action of retracting the cable and ensure that the cable stably enters the winding assembly 2 from the cable opening 131.

[0038] In some embodiments, as Figure 3 and Figure 6As shown, the harmonic gear reducer 32 includes a fixed rigid wheel 321, a flexible wheel 322, a wave generator 323, an output rigid wheel 324, an output portion 325 and a shell cover 326; the wave generator 323 is mounted on the output shaft of the motor 31, the wave generator 323 is arranged inside the flexible wheel 322, the flexible wheel 322 is meshed and connected with the fixed rigid wheel 321, the output rigid wheel 324 is meshed and connected with the flexible wheel 322, the output portion 325 is fixedly connected with the output rigid wheel 324, and the shell cover 326 is fixed to the side of the fixed rigid wheel 321 close to the output portion 325, and the shell cover 326 is used to provide support for the output portion 325.

[0039] Specifically, a flexible bearing is provided between the wave generator 323 and the flexible spline 322. The output shaft of the motor 31 drives the wave generator 323 to rotate at high speed, and the circumference is engaged with the fixed rigid wheel 321 in turn. The fixed rigid wheel 321 is an internal gear, and the flexible spline 322 is a thin-walled cylindrical external gear. The flexible spline 322 is relatively easy to deform, and the shape of the flexible spline 322 changes as the wave generator 323 rotates. The number of teeth of the fixed rigid wheel 321 is greater than the number of teeth of the flexible spline 322. The low-speed rotation of the flexible spline 322 is achieved by relying on the difference in the number of teeth between the flexible spline 322 and the fixed rigid wheel 321. At the same time, since the number of teeth of the output rigid wheel 324 is equal to the number of teeth of the flexible spline 322, the output rigid wheel 324 and the flexible spline 322 move synchronously. Therefore, the output rigid wheel 324 drives the output part 325 to rotate at a low speed.

[0040] In some embodiments, as Figure 3 and Figure 6 As shown, the motor 31 is provided with a motor frame 311, and the motor 31 is installed on the inner side of the fixed frame 12 through the motor frame 311; at the same time, the fixed wheel 321 is fixed on the outer shell of the motor 31 to further lock the motor 31. The fixed wheel 321 remains stationary when the device is working.

[0041] In some embodiments, as Figure 3 and Figure 4 As shown, the screw 23 is a hollow screw 23, the drive assembly 3 is installed inside the screw 23, and an end cover 231 is provided at one end of the screw 23. The end cover 231 is fixed to the inner side of the fixed frame 12 through the motor frame 311, so that the screw 23 remains stable during operation and prevents shaking.

[0042] In some embodiments, as Figure 2 and Figure 3As shown, a mounting hole is provided on one side of the fixed frame 12, and the slip ring 24 is inserted into the protective cover 14 through the mounting hole; the slip ring 24 is used to transmit power, signals and data in the present device, and can continuously transmit power and signals during rotation without twisting the wires; specifically, the slip ring 24 is mainly composed of two major parts, a rotating part and a stationary part, the rotating part is transmission-connected to the cable drum base wheel 22, the cable drum base wheel 22 drives the rotating part of the slip ring 24 to rotate, and the stationary part is fixedly connected to one side of the fixed frame 12; at the same time, the slip ring 24 ensures that when the winding wheel 21 makes a spiral motion on the lead screw 23 (that is, the cable is in the winding process), the winding wheel 21 has enough space to complete a single-layer winding; the slip ring 24 is directly obtained from the prior art, and its structure is not specifically described in this application, but it does not mean that it cannot be implemented.

[0043] In some embodiments, as Figure 7 As shown, the device also includes a connector 4, which is installed at the bottom of the protective cover 14. There are two connectors 4, one of which is electrically connected to the slip ring to transmit cable signals, and the other connector is used to provide power and control signals to the motor, while ensuring the stability and safety of power transmission.

[0044] The implementation principle of this utility model is:

[0045] In the present technical solution, one end of the cable is fixed to the fixing portion 213 of the winding wheel 21, the cable passes through the connecting groove 212, and the other end is connected to the lifting mechanism. The cable drum base wheel 22 is driven to rotate by the driving component 3, so that the winding wheel 21 fixed to the cable drum base wheel 22 rotates, and the winding wheel 21 is threadedly connected to the lead screw 23, and the winding wheel 21 performs a spiral motion. In this way, the cable also performs a spiral motion with the winding wheel 21, ensuring a single-layer spiral winding during the cable winding process, avoiding random winding of the cable and causing cable jamming; at the same time, it also avoids the problem of large external dimensions caused by multi-layer winding.

[0046] In this technical solution, a harmonic gear reducer 32 is provided to achieve a deceleration effect through the interaction of components such as the flexible spline 322, the fixed rigid wheel 321 and the wave generator 323; when the motor 31 drives the wave generator 323 to rotate, the flexible spline 322 is squeezed by the wave generator 323 to produce elastic deformation, and then engages with the fixed rigid wheel 321, and deceleration is achieved by relying on the difference in the number of teeth; the harmonic gear reducer 32 converts the high-speed rotation of the motor 31 into the low-speed and high-torque rotation required by the winding assembly 2, ensuring that the cable can be wound on the winding wheel 21 stably and orderly.

[0047] The above is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. A single-layer winding and rewinding device, characterized in that: include: A housing assembly, a winding assembly, and a driving assembly; the winding assembly and the driving assembly are both arranged inside the housing assembly; The winding assembly includes a winding wheel, a cable drum base wheel, a lead screw, and a slip ring; the winding wheel includes a connecting groove and a fixing portion, the fixing portion is installed on the inner side of the winding wheel, the cable drum base wheel is arranged at one end of the winding wheel, and there is freedom of axial linear motion between the winding wheel and the cable drum base wheel, the lead screw is installed on the inner side of the other end of the winding wheel and is threadedly connected to the winding drum, and the slip ring is transmission-connected to the cable drum base wheel; The driving assembly includes a motor and a harmonic gear reducer. The motor is fixed inside the base assembly. The harmonic gear reducer is installed on the output shaft of the motor. The harmonic gear reducer is connected to the cable drum base wheel.

2. The single-layer winding and retracting device according to claim 1, characterized in that: The winding wheel is provided with raised parts on both sides, and the raised parts ensure that the cable is wound on the winding wheel to prevent the cable from falling out; a channel is formed between the connecting groove and the raised part on one side, and the channel is used for the cable to pass through.

3. The single-layer winding and retracting device according to claim 1, characterized in that: The pitch of the lead screw is equal to the diameter of the cable.

4. The single-layer winding and retracting device according to claim 1, characterized in that: The shell assembly includes a base, a fixing frame, a rain cover, a protective cover and a mounting plate. The base is provided with a fixing frame, rain covers are installed at both ends of the fixing frame, a cable port is opened at one end of the rain cover, the protective cover is arranged on one side of the fixing frame, and the mounting plate is arranged on the other side of the fixing frame.

5. The single-layer winding and retracting device according to claim 4, characterized in that: The winding assembly also includes a guide wheel, and support seats are provided at both ends of the guide wheel. The guide wheel can rotate relative to the support seats, and the support seats are installed on the base.

6. The single-layer winding and retracting device according to claim 1, characterized in that: The harmonic gear reducer includes a fixed rigid wheel, a flexible wheel, a wave generator, an output rigid wheel, an output part and a shell cover; the wave generator is installed on the output shaft of the motor, the wave generator is arranged inside the flexible wheel, the flexible wheel is meshed and connected with the fixed rigid wheel, the output rigid wheel is meshed and connected with the flexible wheel, the output part and the output rigid wheel are fixedly connected, and the shell cover is fixed on the side of the fixed rigid wheel close to the output part.

7. The single-layer winding and retracting device according to claim 6, characterized in that: A flexible bearing is provided between the wave generator and the flexible wheel.

8. The single-layer winding and retracting device according to claim 6, characterized in that: The number of teeth of the fixed rigid wheel is greater than the number of teeth of the flexible wheel, and the number of teeth of the output rigid wheel is equal to the number of teeth of the flexible wheel.

9. The single-layer winding and retracting device according to claim 4, characterized in that: A mounting hole is provided on one side of the fixing frame, and the slip ring is inserted into the protective cover through the mounting hole.

10. The single-layer winding and retracting device according to claim 4, characterized in that: A connector is also included, and the connector is mounted on the bottom of the protective cover.

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