Long-span synchronous rotating mechanism

Abstract

According to the long-span synchronous rotating mechanism, a direct-connection speed reducer is driven by a motor to drive double output shafts to rotate synchronously, the two ends of each output shaft are matched with a transition flange and an output flange through splines, linkage is achieved through a rigid connecting rod, the design of a self-aligning bearing is combined, and 360-degree continuous rotation and high-precision torque transmission are achieved. The mechanism is compact in structure, is suitable for the field of smart home and security, and solves the problems of rotation angle limitation and space layout in the prior art.

Description

Technical Field

[0001] This utility model belongs to the field of security and smart home technology, specifically relating to a long-span synchronous rotation mechanism, which is particularly suitable for scenarios that require two concentric shafts to rotate synchronously with a rotation angle ≥360°. Background Technology

[0002] In smart home products, two concentric shafts often need to rotate synchronously to ensure uniform force distribution on the moving structure. In existing technology, due to space constraints, sometimes to achieve uniform force distribution on the moving structure and require synchronous rotation of two concentric shafts, the orthogonal shaft reducer is replaced with a standard direct-drive reducer, with the motor directly mounted on it. In this case, the motor's rotating shaft and the direct-drive reducer's rotating shaft are on the same axis. The moving mechanism has two output shafts: one located at the front end of the direct-drive reducer and directly connected to its output shaft, and the other located at the rear end of the motor and not connected to it. To enable synchronous rotation of the two output shafts, a connecting rod is installed between them, connecting them into a single unit and achieving synchronous rotation.

[0003] The aforementioned structure has the following drawbacks: the reducer and the bearing housings of both output shafts must be mounted on the same integrated mounting plate and cannot be disconnected. Therefore, although this structure can achieve synchronous rotation of the two output shafts, it limits the rotation angle, allowing only reciprocating rotation within a certain range, and cannot meet the requirement of 360° continuous rotation. Furthermore, the existing solution has shortcomings in terms of spatial layout and torque transmission stability, limiting its use to specific applications and making it unsuitable for scenarios requiring 360° rotation. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned defects and provide a long-span synchronous rotation mechanism. By optimizing the structural design, it can achieve synchronous 360° continuous rotation of two concentric shafts, while improving torque transmission stability and spatial adaptability.

[0005] The purpose of this utility model is achieved through the following technical solution: a long-span synchronous rotation mechanism, characterized in that it includes a base plate, a mounting base, a direct-drive reducer, a motor, a connecting rod, and symmetrically arranged output shaft one, output shaft two, output flange one, output flange two, self-aligning bearing one, self-aligning bearing two, transition flange one, and transition flange two; the mounting base, self-aligning bearing one, and self-aligning bearing two are respectively mounted and fixed on the base plate, the direct-drive reducer is fixed on the mounting base, the motor is connected to the direct-drive reducer, the output shaft two passes through the self-aligning bearing two and is interference-fitted onto the output shaft of the reducer, and is supported on the base plate by the self-aligning bearing two; the left and right surfaces of the output shaft two are respectively... The first output shaft is provided with an external spline, and the second transition flange and the second output flange are respectively provided with internal splines. The second transition flange is installed on the external spline on the right side of the second output shaft via the internal spline, and the second output flange is installed on the external spline on the left side of the second output shaft via the internal spline. The first output shaft passes through the first self-aligning bearing and is supported on the base plate. The left and right surfaces of the first output shaft are respectively provided with external splines, and the first transition flange and the first output flange are respectively provided with internal splines. The first transition flange is installed on the external spline on the left side of the first output shaft via the internal spline, and the first output flange is installed on the external spline on the right side of the first output shaft via the internal spline. The left side of the connecting rod is connected and fixed to the second transition flange, and the right side of the connecting rod is connected and fixed to the first transition flange.

[0006] The first output shaft and the second output shaft are coaxially arranged.

[0007] The beneficial effects of this utility model are:

[0008] 1. The mechanism adopts a head-to-tail connection, where the motor rotates on one side and the output shafts on both sides rotate simultaneously to achieve synchronous rotation. On this basis, while ensuring that the output shafts are synchronized and at the same speed, the force on the mechanism is more even.

[0009] 2. The spline connection and self-aligning bearing are used to achieve high-precision synchronous rotation and stable torque transmission.

[0010] 3. The design of the split base plate and self-aligning bearings removes the limitation of the integrated mounting plate.

[0011] 4. Its compact structure makes it suitable for space-constrained scenarios, improving the layout flexibility of smart home devices. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Explanation of markings in the diagram:

[0014] 1-Base plate; 2-Mounting base; 3-Direct drive reducer; 4-Motor; 5-Output shaft one; 6-Output flange one; 7-Self-aligning bearing one; 8-Transition flange one; 9-Connecting rod; 10-Transition flange two; 11-Self-aligning bearing two; 12-Output flange two; 13-Output shaft two. Detailed Implementation

[0015] Example: As shown in the figure, this utility model designs a long-span synchronous rotation mechanism, such as... Figure 1 As shown, the system includes a base plate 1, a mounting base 2, a direct-drive reducer 3, a motor 4, a connecting rod 9, and symmetrically arranged output shafts 5, 13, 6, 12, 7, 11, 8, and 10. The mounting base 2, 7, and 11 are respectively mounted and fixed on the base plate 1. The direct-drive reducer 3 is fixed on the mounting base 2. The motor 4 is connected to the direct-drive reducer 3. The output shaft 13 is interference-fitted onto the output shaft of the reducer 3 through the 11. Simultaneously, the output shaft 13 is supported on the base plate 1 by the 11. External splines are machined on the left and right surfaces of the output shaft 13, and internal splines are machined on the transition flange 10. The transition flange 10 is mounted to the external spline on the right side of the output shaft 13 via an internal spline. The output flange 12 is machined with an internal spline and is mounted to the external spline on the left side of the output shaft 13 via an internal spline. Similarly, the output shaft 5 passes through the self-aligning bearing 7 and is supported on the base plate 1. The output shaft 5 and the output shaft 13 are coaxially arranged. External splines are machined on the left and right sides of the output shaft 5. The transition flange 8 is machined with an internal spline and is mounted to the external spline on the left side of the output shaft 5 via an internal spline. The output flange 6 is machined with an internal spline and is mounted to the external spline on the right side of the output shaft 5 via an internal spline. The left side of the connecting rod 9 is connected and fixed to the transition flange 10, and the right side of the connecting rod 9 is connected and fixed to the transition flange 8.

[0016] Working principle:

[0017] When the shaft of motor 4 rotates, it drives the shaft of direct-drive reducer 3 to rotate, which in turn drives output shaft 13 to rotate, and simultaneously drives output flange 12 and transition flange 10 to rotate. Since the two ends of connecting rod 9 are respectively connected to and fixed transition flange 10 and transition flange 8, when transition flange 10 rotates, transition flange 8 also rotates simultaneously, thereby driving output shaft 5 and output flange 6 to rotate simultaneously, realizing the simultaneous rotation of output shafts on both sides.

[0018] The main objective of this invention is to design a stable and reliable synchronous rotation mechanism capable of synchronously transmitting torque, addressing the need for synchronous rotation of two rotating shafts with their centers on the same axis, without requiring a rotation angle ≥360°. This invention solves the problem of achieving synchronous rotation of two rotating shafts by directly connecting a motor and a reducer to seamlessly link the two shafts into a single unit, where space is limited and a right-angle shaft reducer cannot be placed.

[0019] The above description of the present utility model is exemplary. It should be noted that without departing from the core of the present utility model, any simple modifications, alterations, or other equivalent substitutions that can be made by those skilled in the art without creative effort fall within the scope of patent protection.

Claims

1. A long-span constant-velocity rotary mechanism characterized by: The utility model relates to a kind of straight connection speed reducer, including bottom plate, mounting base, straight connection speed reducer, motor, connecting rod and symmetrically arranged output shaft one, output shaft two, output flange one, output flange two, self-aligning bearing one, self-aligning bearing two, transition flange one and transition flange two;The mounting base, self-aligning bearing one and self-aligning bearing two are respectively installed and fixed on bottom plate, the straight connection speed reducer is fixed on mounting base, the motor is connected with straight connection speed reducer, the output shaft two is installed on the output shaft of speed reducer by interference through self-aligning bearing two, and it is supported to bottom plate by self-aligning bearing two, the left and right two sides surface of output shaft two is equipped with outer spline respectively, the transition flange two and output flange two are equipped with inner spline respectively, transition flange two is installed to the outer spline on the right side of output shaft two by inner spline, the output flange two is installed to the outer spline on the left side of output shaft two by inner spline, the output shaft one is supported on bottom plate by passing through self-aligning bearing one, the left and right two sides surface of output shaft one is equipped with outer spline respectively, the transition flange one and output flange one are equipped with inner spline respectively, the transition flange one is installed to the outer spline on the left side of output shaft one by inner spline, the output flange one is installed to the outer spline on the right side of output shaft one by inner spline, the left side of connecting rod is connected with transition flange two and is fixed, the right side of connecting rod is connected with transition flange one and is fixed.

2. The long-span constant-velocity rotary mechanism of claim 1, wherein: The output shaft one is coaxially arranged with the output shaft two.

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