Automatic speed-reducing winding device

Abstract

The utility model discloses an automatic speed reduction winding device, which relates to the technical field of winding devices and comprises a seat body, an eccentric disc is arranged in an assembly cavity of the seat body, a driving disc synchronously rotating with a winding shaft is arranged in an axis hole of the eccentric disc, and a one-way structure is arranged between the driving disc and the eccentric disc. The one-way structure enables the driving disc to drive the eccentric disc to rotate synchronously when the driving disc rotates in the forward direction, the driving disc can rotate independently when the driving disc rotates in the reverse direction, and at least one damping mechanism acting on the eccentric disc is arranged in the assembling cavity. The system is low in cost, stable in performance and convenient to maintain.

Description

Technical Field

[0001] This application relates to the field of winding device technology, and specifically to an automatic deceleration winding device. Background Technology

[0002] Winding and unwinding devices are used in many industries, such as the production and use of power cables, conduits, wire ropes, fabrics, and roll films. Traditional winding devices use a drive mechanism to rotate a shaft for winding and / or unwinding. Sometimes, to reduce the speed of the shaft during rotation, a speed-reducing damping structure is needed to prevent the shaft from rotating too fast. Currently, most damping speed reduction solutions on the market are divided into using a torque motor to control the unwinding speed, installing a permanent magnet brake for damping deceleration, or using a mechanical contact damping device. The use of torque motors and permanent magnet brakes increases production costs and burdens enterprises. Moreover, if problems occur, non-professionals cannot perform repairs, making assembly and maintenance very difficult. Mechanical contact damping devices are mostly bidirectional damping and cannot be used in applications requiring unidirectional damping speed reduction. Utility Model Content

[0003] In view of this, this application provides an automatic deceleration winding device to solve the technical problem that the deceleration damping devices in existing winding devices are either too costly or cannot be well adapted to applications requiring unidirectional damping deceleration.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] An automatic deceleration winding device includes a base, an eccentric disk is provided in the assembly cavity of the base, a drive disk that rotates synchronously with the winding shaft is provided in the central hole of the eccentric disk, a one-way structure is provided between the drive disk and the eccentric disk, the one-way structure enables the drive disk to drive the eccentric disk to rotate synchronously when rotating in the forward direction, and enables the drive disk to rotate independently when rotating in the reverse direction, and at least one damping mechanism acting on the eccentric disk is provided in the assembly cavity.

[0006] Furthermore, the unidirectional structure is a ratchet and pawl structure.

[0007] Furthermore, the drive disc is a ratchet disc, and the inner wall of the eccentric disc's shaft hole is provided with a pawl that can float elastically, which meshes with the ratchet disc.

[0008] Furthermore, the damping mechanism includes a piston and a damping elastic element. The assembly cavity is provided with mounting holes for installing the piston and the damping elastic element, and the damping elastic element causes the piston to press against the eccentric disk.

[0009] Furthermore, the seat body is also provided with a valve core mating hole for valve core installation. The valve core mating hole is also provided with a reset elastic element that acts on the valve core. The mounting hole is connected to the valve core mating hole through a connecting channel. The reset elastic element and the damping elastic element deform synchronously through liquid drive.

[0010] Furthermore, the valve core mating hole is connected to the outside, and an adjusting plug is installed at the outer opening of the valve core mating hole.

[0011] Furthermore, the corresponding valve core mating holes are interconnected, and the cavities at both ends of the valve core are connected through overflow channels provided on the valve core, and the corresponding ports of the overflow channels can be closed to block flow.

[0012] Furthermore, the overflow channel includes a core hole concentric with the valve core and a notch located on the side of the valve core. The core hole is connected to the connecting channel, and the core hole is connected to the notch through the diversion channel. The gap channel formed between the conical head of the valve core and the conical section of the valve core mating hole is connected to the notch. When the gap channel is closed, it obstructs the flow.

[0013] Furthermore, the valve core can be engaged with the adjusting screw to prevent excessive valve core reset.

[0014] Furthermore, the limiting boss located on the outer peripheral surface of the valve core can abut against the shoulder surface of the valve core mating hole to limit movement.

[0015] As can be seen from the above technical solution, the advantages of this utility model are:

[0016] 1. The use of a unidirectional structure in this application enables the drive disc to rotate synchronously with the eccentric disc when rotating in the forward direction, and the damping force generated by the action of the eccentric disc and the damping mechanism is used to achieve speed reduction; when the drive disc rotates in the reverse direction, it separates from the eccentric disc and moves independently, the damping mechanism does not work, and there is no damping force.

[0017] 2. In this application, the damping mechanism is used in conjunction with the eccentric disc to gradually reduce the rotational speed and then gradually increase it, thereby achieving intermittent damping.

[0018] 3. The damping force of the damping mechanism in this application is the damping force generated by the spring and the liquid when they are squeezed together, and the rotation speed can be controlled by adjusting the screw plug, which is convenient to use.

[0019] 4. The damping mechanism in this application has a simple structure, is easy to maintain, and is durable. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0021] Figure 1 This is a schematic diagram of the structure of this application.

[0022] Figure 2 This is a schematic diagram of the installation of the unidirectional structure of this application.

[0023] Figure 3 For the purposes of this application Figure 1 A magnified schematic diagram of the structure at point A in the diagram.

[0024] Figure 4 This is a schematic diagram of the valve core structure of this application.

[0025] Explanation of reference numerals in the attached drawings: 1-Seat body; 11-Assembly cavity; 12-Mounting hole; 13-Connecting channel; 14-Valve core mounting channel; 141-Conical section; 15-Through channel; 2-Eccentric disc; 3-Drive disc; 4-One-way structure; 41-Claw; 42-Force-lifting elastic element; 5-Damping mechanism; 51-Piston; 52-Damping elastic element; 6-Adjusting plug; 7-Valve core; 71-Core hole; 72-Limiting boss; 73-Conical head; 74-Diverting channel; 75-Notch groove; 76-Protruding shaft; 8-Reset elastic element; 9-Sealing cover. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and their descriptions are used to explain this application, but are not intended to limit it.

[0027] refer to Figures 1 to 4 ,like Figure 1 As shown, this embodiment provides an automatic deceleration winding device, including a base 1. An eccentric disk 2 is provided in the assembly cavity 11 of the base 1. A drive disk 3 that rotates synchronously with the winding shaft is provided in the axial hole of the eccentric disk 2. A one-way structure 4 is provided between the drive disk 3 and the eccentric disk 2. The one-way structure 4 enables the drive disk 3 to drive the eccentric disk 2 to rotate synchronously when rotating in the forward direction, and enables the drive disk 3 to rotate independently when rotating in the reverse direction. At least one damping mechanism 5 acting on the eccentric disk 2 is provided in the assembly cavity 11.

[0028] Specifically, the drive disk 3 is connected to the rotating shaft as a whole for synchronous rotation. The rotating shaft is connected to the rotation drive mechanism. The base 1 can be formed by assembling two parts to facilitate the installation of the eccentric disk 2, the one-way structure 4, the drive disk 3, and the damping mechanism 5. The one-way structure 4 enables the drive disk 3 to drive the eccentric disk 2 to rotate synchronously when rotating in the forward direction. The interaction between the eccentric disk 2 and the damping mechanism 5 is used to increase the rotational damping force of the eccentric disk 2, thereby reducing the rotational speed of the drive disk 3 to achieve the damping function. When the drive disk 3 rotates in the reverse direction, it rotates independently, the damping mechanism 5 does not work, and therefore there is no damping force applied to the drive disk 3.

[0029] In this application, the one-way structure 4 can be a one-way bearing structure, a ratchet and pawl structure, or a one-way clutch structure.

[0030] like Figure 1 and Figure 2As shown in this application, in order to facilitate maintenance and replacement of parts and extend service life, the unidirectional structure 4 is preferably a ratchet and pawl structure.

[0031] In this embodiment, specifically, the drive disk 3 is a ratchet disk, and the inner wall of the eccentric disk 2's axial hole is provided with an assembly hole. A force-lifting elastic element 42 and a slidably disposed pawl 41 are placed in the assembly hole. The force-lifting elastic element 42 causes the pawl 41 to elastically float and engage with the ratchet disk. With this structure, the drive disk 3 can better cooperate with the eccentric disk 2, has a large load-bearing capacity, and the base 1 can be directly used as a support, making installation convenient.

[0032] To save installation space, the rear end face of the pawl 41 has a blind hole for the insertion of the top force elastic element 42. The two sides of the pawl 41 are respectively provided with a supporting part that meshes with the ratchet disc and an arc-shaped guide part. The arc-shaped guide part allows the pawl 41 to be squeezed along the arc-shaped guide part when the drive disc 3 rotates in the opposite direction, causing the pawl 41 to retract into the assembly hole.

[0033] When the spindle hole of the eccentric disk 2 has a ratchet surface, several pawls 41 can be set on the outer circumferential surface of the drive disk 3. During installation, the rotating shaft and the base 1 that cooperate with the drive disk 3 are installed independently to make the structure stable. Although this increases the complexity of installation, the load-bearing capacity of the rotating shaft can meet the usage requirements.

[0034] like Figure 1 and Figure 3 As shown, the damping mechanism 5 includes a piston 51 and a damping elastic element 52. The assembly cavity 11 is provided with a mounting hole 12 for mounting the piston 51 and the damping elastic element 52. The damping elastic element 52 causes the piston 51 to press against the eccentric disk 2.

[0035] To make the structure compact, the mounting hole 12 is located on the inner wall of the assembly cavity 11 and is connected to the outside. The corresponding sealing cover 9 installed on the base 1 presses against the port of the mounting hole 12 to limit the piston 51 and the damping elastic element 52 within the mounting hole 12. The sealing cover 9 facilitates the replacement of the piston 51 and the damping elastic element 52. When the eccentric disk 2 rotates, it will squeeze the piston 51, causing the damping elastic element 52 to be compressed and generating damping elastic force. When the cam apex of the eccentric disk 2 passes the piston 51, the damping elastic element 52 gradually returns to its original position, and the elastic damping force gradually decreases. This process is repeated to achieve intermittent deceleration. The frequency of damping deceleration is related to the distribution density of the damping mechanism 5.

[0036] like Figure 1 , Figure 3 and Figure 4As shown, in a further structural design, for a compact structure and reliable damping, the seat 1 is also provided with a valve core mating hole for mounting the valve core 7. A reset elastic element 8, acting on the valve core 7, is also provided within the valve core mating hole. The mounting hole 12 is connected to the valve core mating hole via a connecting channel 13. The reset elastic element 8 and the damping elastic element 52 deform synchronously through liquid drive. During use, when the piston 51 moves and compresses the damping elastic element 52, the liquid filling the elastic element mounting cavity in the mounting hole 12 enters the valve core mating hole through the connecting channel 13, pushing the valve core 7 to move, thereby synchronously compressing the reset elastic element 8. The use of dual elastic elements ensures stable product function, preventing sudden damping failure and ensuring safe operation.

[0037] To simplify the processing of the connecting channel 13, a recessed groove is provided on the outer side of the base 1 for the connecting channel 13 and the mounting hole 12 to communicate, and the sealing cover 9 serves the functions of limiting and sealing.

[0038] In a further structural design, to make the damping force adjustable and thus the rotation speed adjustable, the valve core mating hole is connected to the outside, and an adjusting plug 6 is installed at the outer opening of the valve core mating hole. The outer opening of the valve core mating hole can also be used as a filler port for easy oil replenishment. The deeper the adjusting screw 6 is turned, the smaller the cavity between the valve core 7 and the adjusting screw 6. The oil entering the valve core mating hole will quickly drive the valve core 7 to move. The greater the movement stroke of the valve core 7, the greater the deformation of the reset elastic element 8, which in turn increases the damping force, thereby adjusting the rotation speed of the drive disc 3. When the cam apex of the eccentric disc 2 passes the piston 51, the damping elastic element 52 and the reset elastic element 8 gradually reset, pushing the oil in the valve core mating hole back into the elastic element mounting cavity of the mounting hole 12 through the connecting channel 13. The linkage of the two elastic elements is achieved by using oil, which makes the installation position of the valve core 7 highly free and the structure more rationally distributed. When the reset elastic element 8 is connected between the adjusting screw 6 and the valve core 7, the deformation is tensile; when the reset elastic element 8 is held between the valve core 7 and the valve core mating hole, the deformation is compressive.

[0039] To simplify the structure of the valve core 7 and ensure a certain degree of limitation, the valve core 7, after being reset by the reset elastic element 8, can resist the adjusting screw 6 to prevent excessive reset. There is a certain cavity between the adjusting screw 6 and the valve core 7 to ensure that the valve core mating hole can reliably communicate with the connecting channel 13, thus stabilizing the function. The cavity communicating with the connecting channel 13 is formed by utilizing the diameter difference between the end of the valve core 7 and the end of the adjusting screw 6 and the valve core mating hole, ensuring that the oil can smoothly enter the valve core mating hole.

[0040] Preferably, in this application, the damping mechanism 5 consists of two sets located on the same diameter, arranged in a relatively opposite manner, so that the intermittent deceleration frequency of the drive disc 3 is uniform.

[0041] In a further structural improvement, to reduce the oil storage space of the valve core mating holes, several valve core mating holes are interconnected. The cavities at both ends of the valve core 7 are connected via overflow channels on the valve core 7, and the corresponding ports of these overflow channels can be closed to impede flow. During use, the oil in the compressed damping mechanism 5 flows through the overflow channels into another uncompressed damping mechanism 5 for storage. This design meets usage requirements while resulting in a simpler, more compact structure and lower oil consumption.

[0042] Specifically, the valve core mating hole includes a valve core mounting channel 14 and a through channel 15 connecting the two valve core mounting channels 14. The valve core 7 is slidably connected to the valve core mounting channel 14. The adjusting plug 6 is threadedly connected to the outer port of the valve core mounting channel 14. The reset elastic element 8 is installed in the through channel 15 and its two ends abut against the corresponding valve core 7. The two sets of damping mechanisms 5 use the same reset elastic element 8, which makes the valve cores 7 at both ends have good linkage synchronization and saves the limiting structure of the reset elastic element 8.

[0043] In this embodiment, the reset elastic element 8 is preferably a spring. In order to improve the installation and use stability of the reset elastic element 8, the end of the valve core 7 has a convex shaft 76 that fits into the reset elastic element 8. When the reset elastic element 8 is compressed to a certain extent, the two convex shafts 76 located in the through channel 15 abut against each other to make the valve core 7 move together, which can prevent the reset elastic element 8 from being over-compressed and make the service life of the reset elastic element 8 longer.

[0044] In this application, the overflow channel includes a core hole 71 concentric with the valve core 7 and a notch 75 located on the side of the valve core 7. The core hole 71 is connected to the connecting channel 13. The core hole 71 is connected to the notch 75 through the diversion channel 74. The gap channel formed between the conical head 73 of the valve core 7 and the conical hole section 141 of the valve core mating hole is connected to the notch 75. When the gap channel is closed, it obstructs the flow. When in use, when the corresponding damping mechanism 5 is compressed, the cone head 73 gradually moves closer to the corresponding cone hole section 141, causing the gap channel to gradually shrink, thus throttling to control the flow rate, and in turn controlling the retraction speed of the piston 51 to control the rotation speed. Throttling increases the hydraulic pressure in the mounting cavity of the elastic element of the mounting hole 12, thereby increasing the damping force. When the cone head 73 and the cone hole section 141 are in contact, the gap channel is closed, and the notch groove 75 is connected to the gap channel. When the pressure in the notch groove 75 exceeds a certain value, the liquid will be squeezed into the space between the cone head 73 and the cone hole section 141 and then into the through channel 15, avoiding excessive pressure in the valve core mating hole. This makes the seat 1, even when made of common metal materials, less prone to deformation, thus stabilizing the structure. When the pressure received by the damping mechanism 5 is released, the damping elastic element 52 causes the piston 51 to quickly reset and suck oil, causing the corresponding core hole 71 to move closer to the adjusting screw plug 6, thus maximizing the corresponding gap channel. The corresponding core hole 71 returns to the normally open state, maintaining smooth return flow.

[0045] The notch 75 can be set on the outer circumferential surface of the valve core 7 or the conical surface of the conical head 73. In actual use, the end face of the valve core 7 near the gap channel can also be flat to meet the usage requirements. The structure can be adjusted accordingly.

[0046] In this application, the limiting boss 72 located on the outer peripheral surface of the valve core 7 can abut against the shoulder surface of the valve core mating hole to limit the position. By limiting the extreme position of the valve core 7, the minimum value of the gap channel is controlled, which has high controllability and makes the device performance stable.

[0047] In this application, the damping elastic element 52 and the force-lifting elastic element 42 are preferably springs.

[0048] In this application, sealing rings are provided between piston 51 and mounting hole 12, between sealing cover 9 and seat 1, between valve core 7 and valve core mounting channel 14, and between adjusting screw plug 6 and valve core mounting channel 14.

[0049] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to the embodiments of this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic deceleration winding device, comprising a base (1), characterized in that, An eccentric disk (2) is provided in the assembly cavity (11) of the seat (1). A drive disk (3) that rotates synchronously with the winding shaft is provided in the axial hole of the eccentric disk (2). A one-way structure (4) is provided between the drive disk (3) and the eccentric disk (2). The one-way structure (4) enables the drive disk (3) to drive the eccentric disk (2) to rotate synchronously when rotating in the forward direction, and enables the drive disk (3) to rotate independently when rotating in the reverse direction. At least one damping mechanism (5) acting on the eccentric disk (2) is provided in the assembly cavity (11).

2. The automatic deceleration winding device according to claim 1, characterized in that, The unidirectional structure (4) is a ratchet and pawl structure.

3. The automatic deceleration winding device according to claim 2, characterized in that, The drive disk (3) is a ratchet disk, and the inner wall of the axial hole of the eccentric disk (2) is provided with a pawl (41) that can float elastically, and the pawl (41) meshes with the ratchet disk.

4. The automatic deceleration winding device according to claim 1, characterized in that, The damping mechanism (5) includes a piston (51) and a damping elastic element (52). The assembly cavity (11) is provided with a mounting hole (12) for mounting the piston (51) and the damping elastic element (52). The damping elastic element (52) causes the piston (51) to press against the eccentric disk (2).

5. The automatic deceleration winding device according to claim 4, characterized in that, The seat (1) is also provided with a valve core mating hole for the valve core (7) to be installed. The valve core mating hole is also provided with a reset elastic element (8) acting on the valve core (7). The mounting hole (12) is connected to the valve core mating hole through a connecting channel (13). The reset elastic element (8) and the damping elastic element (52) deform synchronously through liquid drive.

6. The automatic deceleration winding device according to claim 5, characterized in that, The valve core mating hole is connected to the outside, and an adjusting screw plug (6) is installed at the outer opening of the valve core mating hole.

7. The automatic deceleration winding device according to claim 5, characterized in that, The corresponding valve core mating holes are interconnected, and the cavities of the valve core mating holes located at both ends of the valve core (7) are connected through the overflow channel provided on the valve core (7), and the corresponding port of the overflow channel can be closed to block the flow.

8. The automatic deceleration winding device according to claim 7, characterized in that, The overflow channel includes a core hole (71) concentric with the valve core (7) and a notch (75) located on the side of the valve core (7). The core hole (71) is connected to the connecting channel (13). The core hole (71) is connected to the notch (75) through the diversion channel (74). The gap channel formed between the conical head (73) of the valve core (7) and the conical hole section (141) of the valve core mating hole is connected to the notch (75). When the gap channel is closed, it obstructs the flow.

9. The automatic deceleration winding device according to claim 6, characterized in that, The valve core (7) can abut against the adjusting screw (6) to prevent the valve core (7) from over-resetting.

10. The automatic deceleration winding device according to claim 9, characterized in that, The limiting boss (72) located on the outer peripheral surface of the valve core (7) can abut against the shoulder surface of the valve core mating hole for limiting.

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