A dual-cable synchronous take-up and release device based on fine-tuning

Abstract

This invention relates to the field of engineering machinery technology, and discloses a dual-cable synchronous winding and unwinding device based on fine-tuning. It includes a sun gear shaft with sun gears on both sides. The sun gear shaft is connected to a frame, and the sun gears on both sides are respectively connected to a first output structure and a second output structure. The sun gear shaft is connected to a first geared motor via a reducer, which provides power to the sun gear shaft, driving the first and second output structures. The first output structure is also connected to a fine-tuning structure, which is connected to the second geared motor. Driven by the second geared motor, the fine-tuning structure adjusts the movement speed of the first output structure. This invention uses a fine-tuning structure on one side of the sun gear shaft to adjust the movement rhythm of the output structure on that side, solving the problem of asynchronous winding and unwinding of the two cables due to differences in physical properties or mechanical errors in the drum manufacturing.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, specifically to a dual-cable synchronous take-up and release device based on fine-tuning. Background Technology

[0002] Currently, wire rope drums are used in various engineering machinery equipment such as tension stringing and mining machinery. However, due to machining errors during the drum production process, and the length limitations of wire ropes, it is impossible to guarantee the consistency of physical properties such as elastic modulus and density of all wire ropes of uniform specifications. During the simultaneous winding and unwinding of two wire ropes, inconsistencies in the winding and unwinding amounts of the two wire ropes are likely to occur. In the paper "Influence of Drum and Wire Rope Deformation on Cumulative Rope Length Difference and Tension Difference in Double-Rope Multi-Layer Winding Hoist", Chongqing University pointed out the influence of drum error and cumulative unwinding length of wire rope on tension difference. When the unwinding length of the wire rope is long, the unwinding error will increase significantly.

[0003] Most existing cable (wire rope) drums lack synchronization devices, or only use a single motor to control a single drum or a dual motor to control a dual drum, making it impossible to accurately control the synchronous release or reeling of two cables (wire ropes). Summary of the Invention

[0004] To address the shortcomings of the prior art, the present invention provides a dual-cable synchronous deployment and retraction device based on fine-tuning, ensuring that the two cables are deployed or retracted synchronously.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A dual-cable synchronous deployment and retraction device based on fine-tuning includes a sun gear shaft with sun gears on both sides. The sun gear shaft is connected to a frame, and the sun gears on both sides of the sun gear shaft are respectively connected to a first output structure and a second output structure. The sun gear shaft is connected to a first geared motor through a reducer. The first geared motor provides power to the sun gear shaft, driving the first and second output structures to move. The first output structure is also connected to a fine-tuning structure, which is connected to the second geared motor. Under the drive of the second geared motor, the fine-tuning structure adjusts the movement speed of the first output structure.

[0007] Furthermore, the first output structure includes a first planetary gear, a first planetary outer ring gear, and a first planetary gearbox output shaft. The first planetary gear meshes with the sun gear. The first planetary outer ring gear has a stepped double internal gear structure, including a large gear ring and a small gear ring. The large gear ring of the first planetary outer ring gear meshes with the first planetary gear. The small gear ring of the first planetary outer ring gear meshes with and connects to the first planetary gearbox output shaft. The first planetary gearbox output shaft is coaxial with the sun gear shaft. The first planetary gearbox output shaft is coaxially connected to the first rope winding and unwinding device.

[0008] Furthermore, the fine-tuning structure includes a slewing bearing gear connected to the sun gear shaft, and the shaft of the first planetary gear connected to the inner wall of the slewing bearing gear; the external teeth of the slewing bearing gear mesh with a slewing bearing pinion, the slewing bearing pinion is fixed to the frame, and the slewing bearing gear is connected to the second geared motor through the slewing bearing pinion.

[0009] Furthermore, the second output structure includes a second planetary gear, a second planetary outer ring gear, and a second planetary gearbox output shaft. The second planetary gear meshes with the sun gear, and the shaft of the second planetary gear is connected to the frame. The second planetary outer ring gear has a stepped double internal gear structure, including a large gear ring and a small gear ring. The large gear ring of the second planetary outer ring gear meshes with the second planetary gear. The small gear ring of the second planetary outer ring gear meshes with and connects to the second planetary gearbox output shaft. The second planetary gearbox output shaft is coaxial with the sun gear shaft. The second planetary gearbox output shaft is coaxially connected to the rope winding and unwinding device.

[0010] Furthermore, the second planetary gear, the second planetary outer ring gear, and the second planetary output shaft have the same dimensional parameters as the first planetary gear, the first planetary outer ring gear, and the first planetary output shaft, respectively.

[0011] Preferably, the first rope winding and unwinding device is a drum, which is coaxially and fixedly connected to the output shaft of the first planetary gear set.

[0012] In another preferred embodiment, the first rope winding and unwinding device includes a first drum pinion and a second drum, the first drum pinion being coaxially connected to the output shaft of the first planetary gear set, and the second drum being meshed with the first drum pinion.

[0013] Preferably, there are two second rolls.

[0014] Furthermore, the first planetary gear is provided in multiple forms, and the multiple first planetary gears are evenly distributed around the sun gear shaft.

[0015] Furthermore, the number of the second planetary gears is the same as the number of the first planetary gears.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The present invention provides a fine-tuning structure on one side of the sun gear shaft. The first gear motor provides power to the sun gear shaft and provides a large torque to the entire device, which is transmitted to the output structures on both sides to provide power to the output structures. The second gear motor adjusts the movement rhythm of the output structure on this side through the fine-tuning structure, thereby adjusting the transmission speed and displacement errors caused by the physical properties of the cables on both sides and the manufacturing errors of the drum, and solving the problem of asynchronous operation of the two cables during winding and unwinding. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a wheel train diagram according to an embodiment of the present invention;

[0020] Figure 2 This is the present invention. Figure 1 The axial view of the embodiment shown;

[0021] Figure 3 yes Figure 2 A cross-sectional view of the embodiment shown.

[0022] Reference numerals: 0-frame, 1-sun gear shaft, 2-first planetary gear, 2'-second planetary gear, 3-first planetary outer ring gear, 3'-second planetary outer ring gear, 4-first planetary output shaft, 4'-second planetary output shaft, 5-first drum pinion, 5'-second drum pinion, 6-drum, 7-slewing bearing gear, 8-slewing bearing pinion. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] A dual-cable synchronous deployment and retraction device based on fine-tuning includes a sun gear shaft 1 with sun gears on both sides. The sun gear shaft 1 is connected to a frame 0. The sun gears on both sides of the sun gear shaft 1 are respectively connected to a first output structure and a second output structure. The sun gear shaft 1 is connected to a first geared motor through a reducer. The first geared motor provides power to the sun gear shaft 1, driving the first and second output structures to move. The first output structure is also connected to a fine-tuning structure, which is connected to the second geared motor. Under the drive of the second geared motor, the fine-tuning structure adjusts the movement speed of the first output structure.

[0025] The first output structure includes a first planetary gear 2, a first planetary outer ring gear 3, and a first planetary gear set output shaft 4. The first planetary gear 2 meshes with the sun gear. The first planetary outer ring gear 3 has a stepped double internal gear structure, including a large gear ring and a small gear ring. The large gear ring of the first planetary outer ring gear 3 meshes with the first planetary gear 2. The small gear ring of the first planetary outer ring gear 3 meshes with and connects to the first planetary gear set output shaft 4. The first planetary gear set output shaft 4 is coaxial with the sun gear shaft 1. The first planetary gear set output shaft 4 is coaxially connected to the first rope winding and unwinding device. Preferably, there are multiple first planetary gears 2, such as 2, 3, or 4, which are evenly distributed around the sun gear shaft 1. In one embodiment, the first rope winding and unwinding device is a drum 6, which is coaxially and fixedly connected to the first planetary gear set output shaft. In another embodiment, the first rope winding and unwinding device includes a first drum pinion 5 and a second drum. The first drum pinion 5 is coaxially connected to the first planetary gear set output shaft 4, and the second drum meshes with the first drum pinion 5. Preferably, there are two second drums.

[0026] The fine-tuning structure includes a slewing bearing gear 7, which is connected to the sun gear shaft 1. The shaft of the first planetary gear 2 is connected to the inner wall of the slewing bearing gear 7. The external teeth of the slewing bearing gear 7 are meshed with a slewing bearing pinion 8, which is fixed to the frame 0. The slewing bearing gear 7 is connected to the second geared motor through the slewing bearing pinion 8.

[0027] The second output structure includes a second planetary gear 2', a second planetary outer ring gear 3', and a second planetary gear set output shaft 4'. The second planetary gear 2' meshes with the sun gear, and the shaft of the second planetary gear 2' is connected to the frame 0. The second planetary outer ring gear 3' has a stepped double internal gear structure, including a large gear ring and a small gear ring. The large gear ring of the second planetary outer ring gear 3' meshes with the second planetary gear 2'. The small gear ring of the second planetary outer ring gear 3' meshes with and connects to the second planetary gear set output shaft 4', which is coaxial with the sun gear shaft. The second planetary gear set output shaft 4' is coaxially connected to the rope winding and unwinding device. Preferably, the second planetary gear 2', the second planetary outer ring gear 3', and the second planetary gear set output shaft 4' have the same dimensional parameters as the first planetary gear 2, the first planetary outer ring gear 3, and the first planetary gear set output shaft 4, respectively, and the number of second planetary gears 2' is the same as the number of first planetary gears 2. In one embodiment, the second rope winding and unwinding device is a drum 6, which is coaxially and fixedly connected to the output shaft 4' of the second planetary gear set; in another embodiment, the second rope winding and unwinding device includes a second drum pinion 5' and a second drum, the second drum pinion 5' being coaxially connected to the output shaft 4' of the second planetary gear set, and the second drum being meshed with the second drum pinion 5'.

[0028] The working principle of this invention is as follows: The first planetary gear output shaft 4 is a two-degree-of-freedom device with two driving components, namely the sun gear shaft and the slewing bearing pinion. The sun gear shaft provides a large torque to the entire device, which is transmitted to the rope winding and unwinding device through the gear, thus providing power to the rope winding and unwinding device. The slewing bearing pinion provides a smaller torque, which is used to fine-tune the first planetary gear output shaft, thereby affecting the rotational speed and torque of the first rope winding and unwinding device. In this invention, the second planetary gear output shaft 4' is fixedly connected to the frame 0 through the second planetary gear 2', becoming a single-degree-of-freedom device. The torque is provided only by the sun gear shaft, which is transmitted to the rope winding and unwinding device through the gear, thus providing power to the rope winding and unwinding device. This is used to adjust the errors in transmission speed and displacement caused by the physical properties of the cables on both sides and the manufacturing errors of the drum, thereby synchronizing the cables on both sides.

[0029] The working process of this invention is as follows: the driving element—sun gear shaft 1—provides torque under the drive of a motor, which is transmitted to the rope winding and unwinding device via gear transmission, providing rotational power to the device. Depending on the winding and unwinding status of the two cables, the driving element—slewing bearing pinion 8—rotates forward or backward, thereby fine-tuning the cable on that side to ensure synchronous winding and unwinding of the two cables. When the physical properties of the two cables on the double drum differ, or when there are mechanical errors in the drum manufacturing, the fine-tuning structure of this invention can synchronize the two cables, solving the problem of asynchronous winding and unwinding of the two cables that existed previously.

[0030] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A dual-cable synchronous deployment and take-up device based on fine-tuning, characterized in that: The device includes a sun gear shaft (1), with sun gears on both sides. The sun gear shaft (1) is connected to the frame (0). The sun gears on both sides of the sun gear shaft (1) are connected to the first output structure and the second output structure, respectively. The sun gear shaft (1) is connected to the first geared motor through a reducer. The first geared motor provides power to the sun gear shaft (1) and drives the first output structure and the second output structure to move. The first output structure is also connected to a fine-tuning structure, which is connected to the second geared motor. Under the drive of the second geared motor, the fine-tuning structure adjusts the movement speed of the first output structure. The first output structure includes a first planetary gear (2), a first planetary outer ring gear (3), and a first planetary gearbox output shaft (4). The first planetary gear (2) meshes with the sun gear. The first planetary outer ring gear (3) has a stepped double internal tooth structure, including a large gear ring and a small gear ring. The large gear ring of the first planetary outer ring gear (3) meshes with the first planetary gear (2). The small gear ring of the first planetary outer ring gear (3) meshes with and connects to the first planetary gearbox output shaft (4). The first planetary gearbox output shaft (4) is coaxial with the sun gear shaft (1). The first planetary gearbox output shaft (4) is coaxially connected to the first rope winding and unwinding device. The fine-tuning structure includes a slewing bearing gear (7), which is connected to the sun gear shaft (1). The shaft of the first planetary gear (2) is connected to the inner wall of the slewing bearing gear (7). The external teeth of the slewing bearing gear (7) mesh with the slewing bearing pinion (8), which is fixed to the frame (0). The slewing bearing gear (7) is connected to the second geared motor through the slewing bearing pinion (8).

2. The dual-cable synchronous take-up and release device based on fine-tuning according to claim 1, characterized in that: The second output structure includes a second planetary gear (2'), a second planetary outer ring gear (3'), and a second planetary gear output shaft (4'). The second planetary gear (2') meshes with the sun gear, and the shaft of the second planetary gear (2') is connected to the frame (0). The second planetary outer ring gear (3') has a stepped double internal gear structure, including a large gear ring and a small gear ring. The large gear ring of the second planetary outer ring gear (3') meshes with the second planetary gear (2'). The small gear ring of the second planetary outer ring gear (3') meshes with the second planetary gear output shaft (4'), and the second planetary gear output shaft (4') is coaxial with the sun gear shaft (1). The second planetary gear output shaft (4') is coaxially connected to the rope winding and unwinding device.

3. The dual-cable synchronous take-up and release device based on fine-tuning according to claim 2, characterized in that: The second planetary gear (2'), the second planetary outer ring gear (3'), and the second planetary output shaft (4') have the same dimensional parameters as the first planetary gear (2), the first planetary outer ring gear (3), and the first planetary output shaft (4), respectively.

4. The dual-cable synchronous take-up and release device based on fine-tuning according to claim 1, characterized in that: The first rope winding and unwinding device is a drum (6), which is coaxially and fixedly connected to the first planetary output shaft (4).

5. The dual-cable synchronous take-up and release device based on fine-tuning according to claim 1, characterized in that: The first rope winding and unwinding device includes a first drum pinion (5) and a second drum. The first drum pinion (5) is coaxially connected to the first planetary gear output shaft (4), and the second drum is meshed with the first drum pinion (5).

6. The dual-cable synchronous take-up and release device based on fine-tuning according to claim 5, characterized in that: There are two second rolls.

7. The dual-cable synchronous take-up and release device based on fine-tuning according to claim 2, characterized in that: The first planetary gear (2) is provided in multiple ways, and the multiple first planetary gears (2) are evenly distributed around the sun gear shaft (1) in a circumferential direction.

8. The dual-cable synchronous take-up and release device based on fine-tuning according to claim 7, characterized in that: The number of the second planetary gears (2') is the same as the number of the first planetary gears (2).

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