A multi-stroke amplification mechanism

Abstract

The utility model relates to mechanical drive technical field especially relates to a kind of multiple stroke amplification mechanism, by the engagement drive of gear and rack transmission assembly, drive sliding rail and synchronous belt whole movement, simultaneously utilize the transmission characteristic of synchronous belt, further stroke amplification, so that the displacement of stroke output piece is the multiple of displacement directly generated by driving gear rotation;Fixed rail provides stable guiding support, guarantees the stability and accuracy of stroke output piece movement, reduces the error and jitter in transmission process, improves the transmission accuracy of whole mechanism.In addition, the components of the present mechanism are closely matched with each other, the overall layout is compact, which facilitates installation and use in space-limited equipment, and improves the space utilization.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and in particular to a multi-stroke amplification mechanism. Background Technology

[0002] In automated equipment, it is often necessary to amplify the finite stroke of drive components. Existing multi-stroke amplification mechanisms mostly employ multi-link amplification mechanisms. While the working principle of multi-link amplification mechanisms is based on the geometric relationships and kinematics of the links, they suffer from problems such as complex connection methods, large space requirements, and high maintenance costs. Existing technology, patent number CN201721588607.1, discloses a stroke multiplication mechanism based on a synchronous belt. The two sides of the synchronous belt are connected to the input and output ends of the stroke via fixing components and connecting blocks, respectively, utilizing the transmission characteristics of the synchronous belt to multiply the output stroke. However, this mechanism relies solely on synchronous belt transmission. Under complex operating conditions, relying solely on synchronous belt transmission may result in poor performance in terms of stability, accuracy, and load capacity. It is prone to transmission errors, synchronous belt slack, or wear, thus affecting the accuracy of the stroke output and the service life of the mechanism. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a multi-stroke amplification mechanism, comprising:

[0004] frame;

[0005] A telescopic assembly, mounted on the frame, on which a synchronous belt is rotatably wound;

[0006] A stroke output component is slidably mounted on the telescopic end of the telescopic assembly;

[0007] The synchronous belt has two sides with opposite directions of movement connected to the frame and the stroke output component, respectively. When the telescopic component extends, the stroke output component can be driven by the synchronous belt to slide towards the end of the telescopic component that extends out.

[0008] In some possible embodiments, one side of the timing belt is fixedly connected to one end of the frame via a first clamping plate, and the other side of the timing belt is fixedly connected to the stroke output component via a second clamping plate.

[0009] In some possible embodiments, the telescopic assembly includes a fixed guide rail and a sliding rail. The fixed guide rail is mounted on a frame, and one end of the sliding rail is slidably mounted inside the fixed guide rail. The timing belt is rotatably wound around the sliding rail, and the stroke output element is slidably mounted on the sliding rail. When the sliding rail extends relative to the fixed guide rail, the timing belt drives the stroke output element to slide towards the end of the sliding rail that extends outward.

[0010] In some possible embodiments, the telescopic assembly further includes a drive gear mounted on the frame, a base plate provided on the side of the slide rail, a transmission rack on the base plate capable of meshing with the drive gear, a timing belt rotatably wrapped around the top of the base plate, and a stroke output member slidably mounted on the base plate.

[0011] In some possible embodiments, a linear slide rail is mounted on the outer surface of the substrate, and the stroke output component is mounted on the linear slide rail via a slider.

[0012] In some possible embodiments, the frame is provided with a mounting plate, the mounting plate is provided with a drive motor, and the drive gear is mounted on the rotating end of the drive motor.

[0013] In some possible embodiments, a fixing seat is provided at both ends of the top of the substrate, and a synchronous pulley is rotatably mounted on each of the two sets of fixing seats, and the synchronous belt is rotatably wound around the two sets of synchronous pulleys.

[0014] In some possible embodiments, a stop block is provided on the end of the fixed guide rail that extends away from the sliding rail.

[0015] Compared to existing technologies, the advantages of this invention are as follows: The multi-stroke amplification mechanism of this invention, through the meshing of gear and rack transmission components, drives the sliding rail and synchronous belt to move as a whole. Simultaneously, utilizing the transmission characteristics of the synchronous belt, the stroke is further amplified, making the displacement of the stroke output component many times greater than the displacement directly generated by the rotation of the driving gear. The fixed rail provides stable guiding support, ensuring the smoothness and accuracy of the stroke output component's movement, reducing errors and vibrations during transmission, and improving the overall transmission accuracy of the mechanism. Furthermore, the various components of this mechanism are closely integrated, and the overall layout is compact, facilitating installation and use in space-constrained equipment, thus improving space utilization. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 Structural diagram provided for embodiments of this utility model Figure 1 ;

[0018] Figure 2 Structural diagram provided for embodiments of this utility model Figure 2 ;

[0019] Figure 3 Partial structural schematic diagram provided for embodiments of this utility model Figure 1 ;

[0020] Figure 4 Partial structural schematic diagram provided for embodiments of this utility model Figure 2 .

[0021] Reference numerals: Frame 10, Mounting plate 11, Telescopic assembly 20, Fixed guide rail 21, Sliding rail 22, Intermediate slide rail 23, Drive gear 24, Base plate 25, Transmission rack 26, Linear slide rail 27, Drive motor 28, Synchronous belt 30, First clamping plate 31, Second clamping plate 32, Fixed seat 33, Synchronous pulley 34, Stroke output component 40, Slider 41. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0023] Reference Figures 1 to 4The illustrated multi-stroke amplification mechanism includes a frame 10 for fixed installation at a suitable location on the equipment as a support base for the entire mechanism; a telescopic component 20 mounted on the frame 10, with a synchronous belt 30 rotatably wound around the telescopic component 20; and a stroke output component 40 slidably mounted on the telescopic end of the telescopic component 20. The synchronous belt 30 has two sides with opposite directions of movement connected to the frame 10 and the stroke output component 40, respectively. When the telescopic component 20 extends, the stroke output component 40 can slide towards the extended end of the telescopic component 20 via the synchronous belt 30. The displacement generated by the stroke output component 40 is greater than the displacement generated by the telescopic component 20. In addition, this mechanism can be used in the field of robotics as a moving mechanism for a robotic arm. In this case, two sets of telescopic components 20 are arranged in a mirror symmetrical manner on the frame 10, that is, the two sets of telescopic components 20 are installed in parallel on both sides of the frame 10. The two sets of stroke output components 40 are synchronously connected by a steel synchronizing rod. The robotic arm is mounted on the stroke output component 40. The steel synchronizing rod can ensure that the two ends of the stroke output component 40 remain synchronized during the movement, thereby enhancing the precise grasping and operation capabilities of the robotic arm.

[0024] This utility model's multi-stroke amplification mechanism drives the sliding rail 22 and synchronous belt 30 to move as a whole through the meshing of a gear and rack transmission assembly. Simultaneously, utilizing the transmission characteristics of the synchronous belt 30, the stroke is further amplified, making the displacement of the stroke output component multiple times that directly generated by the rotation of the driving gear 24. The fixed rail provides stable guiding support, ensuring the smoothness and accuracy of the stroke output component's movement 40, reducing errors and vibrations during transmission, and improving the overall transmission accuracy of the mechanism. Furthermore, the various components of this mechanism are closely integrated, and the overall layout is compact, facilitating installation and use in space-constrained equipment, thus improving space utilization.

[0025] In some possible embodiments, refer to Figure 4As shown, the telescopic assembly 20 includes a fixed guide rail 21 and a sliding rail 22. The fixed guide rail 21 is mounted on the frame 10, and one end of the sliding rail 22 is slidably mounted inside the fixed guide rail 21. The synchronous belt 30 is rotatably wound around the sliding rail 22, and the stroke output component 40 is slidably mounted on the sliding rail 22. To increase the travel stroke, the telescopic slide rail assembly 20 of this mechanism can specifically be a three-section ball bearing slide rail, that is, an intermediate slide rail 23 is slidably mounted between the fixed guide rail 21 and the sliding rail 22. The fixed guide rail 21 is fixed to the frame 10 by bolts, and the intermediate slide rail 23 is connected to the fixed guide rail 21 by a ball bearing retainer. The sliding guide rail 22 and the intermediate slide rail 23 are slidably engaged. This is prior art, and for details, please refer to the three-section fully extended ball bearing slide rail reinforced structure disclosed in patent number CN200320118926.8. Furthermore, a stop block is provided on the end of the fixed guide rail 21 that extends away from the sliding rail 22. That is, a rubber stop block is provided at the end of the fixed guide rail 21 to limit the sliding stroke of the sliding rail 22, prevent it from falling off the fixed guide rail 21, and ensure the normal operation and safety of the entire mechanism.

[0026] In some possible embodiments, refer to Figure 1 and Figure 3 As shown, the telescopic assembly 20 also includes a drive gear 24 mounted on the frame 10. A base plate 25 is provided on the outer surface of the slide rail 22. A transmission rack 26 capable of meshing with the drive gear 24 is provided on the lower end of the base plate 25. A synchronous belt 30 is rotatably wrapped around the top of the base plate 25. The stroke output component 40 is slidably mounted on the outer surface of the base plate 25. The transmission rack 26 is a straight rack, which is machined at the bottom of the lower end of the base plate 25, and its tooth profile parameters can mesh and match with the drive gear 24. Furthermore, to ensure that the stroke output component 40 can move smoothly along the outer side of the base plate 31, a linear slide rail 27 is mounted on the outer surface of the base plate 25, and the stroke output component 40 is mounted on the linear slide rail 27 through a slider 41.

[0027] In some possible embodiments, refer to Figure 1 and Figure 4 As shown, the frame 10 is equipped with a mounting plate 11, on which a drive motor 28 is mounted. A drive gear 24 is mounted on the rotating end of the drive motor 28. The mounting plate 11 can be welded to the outer side of the frame 10 or the fixed guide rail 21. The drive motor 28 can be a DJI M3508 motor with the gearbox removed, serving as the core power source to improve transmission efficiency, reduce energy loss, and enhance response speed and flexibility through lightweight design.

[0028] In some possible embodiments, refer to Figure 1 and Figure 3As shown, one side of the synchronous belt 30 is fixedly connected to one end of the frame 10 via a first clamping plate 31, and the other side of the synchronous belt 30 is fixedly connected to the stroke output component 40 via a second clamping plate 32. The first clamping plate 31 can drive the synchronous belt 30 to rotate, so that the second clamping plate 32 drives the stroke output component 40 to generate additional displacement relative to the telescopic component 20. Fixed seats 33 are provided at both ends of the top of the base plate 25, and synchronous pulleys 34 are rotatably mounted on both sets of fixed seats 33. The synchronous belt 30 is rotatably wound around the two sets of synchronous pulleys 34. The synchronous belt 30 forms a closed loop around the two sets of synchronous pulleys 34. The synchronous pulleys 34 can be synchronous pulleys with built-in bearings. The low friction characteristics of the bearings reduce frictional losses between the synchronous pulleys 34 and the synchronous belt 30, improving transmission efficiency and ensuring the position exchange between the first clamping plate 31 and the second clamping plate 32 on the synchronous belt 30.

[0029] During work, if by Figures 1 to 2 The driving process begins with the drive motor 28 driving the cylindrical gear 29 to rotate. The telescopic component 20 and the stroke output component 40 move into the fixed guide rail 21. Since the position of the first clamping plate 31 is fixed on the frame 10 or the fixed guide rail 21, the first clamping plate 31 simultaneously drives the synchronous belt 30 to rotate. Since the sum of the distance between the first clamping plate 31 and any synchronous pulley 34 and the distance between the second clamping plate 32 and the same synchronous pulley 34 remains constant, the second clamping plate 32 will also be displaced accordingly, causing the stroke output component 40 to slide along the linear slide rail 27. At this time, the displacement of the stroke output component 40 is twice the displacement of the telescopic component 20.

[0030] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A multi-stroke amplification mechanism, characterized in that, include: Rack (10); A telescopic assembly (20) is mounted on the frame (10), and a timing belt (30) is rotatably wound around the telescopic assembly (20). The stroke output component (40) is slidably mounted on the telescopic end of the telescopic assembly (20); The synchronous belt (30) is connected to the frame (10) and the stroke output component (40) on opposite sides of its movement direction, respectively. When the telescopic component (20) extends, the stroke output component (40) can be driven by the synchronous belt (30) to slide towards the end of the telescopic component (20) that extends out. The telescopic assembly (20) includes a fixed guide rail (21) and a sliding rail (22). The fixed guide rail (21) is mounted on the frame (10). One end of the sliding rail (22) is slidably mounted inside the fixed guide rail (21). The synchronous belt (30) is rotatably wound around the sliding rail (22). The stroke output component (40) is slidably mounted on the sliding rail (22). When the sliding rail (22) extends relative to the fixed guide rail (21), the synchronous belt (30) drives the stroke output component (40) to slide towards the end of the sliding rail (22) that extends outward. The telescopic assembly (20) also includes a drive gear (24) mounted on the frame (10), a base plate (25) is provided on the side of the sliding rail (22), a transmission rack (26) is provided on the base plate (25) that can mesh with the drive gear (24), the synchronous belt (30) is rotatably wrapped around the top of the base plate (25), and the stroke output member (40) is slidably mounted on the base plate (25).

2. The multi-stroke amplification mechanism according to claim 1, characterized in that, One side of the synchronous belt (30) is fixedly connected to one end of the frame (10) through the first clamp (31), and the other side of the synchronous belt (30) is fixedly connected to the stroke output component (40) through the second clamp (32).

3. The multi-stroke amplification mechanism according to claim 1, characterized in that, A linear slide rail (27) is mounted on the outer side of the substrate (25), and the stroke output component (40) is mounted on the linear slide rail (27) by means of a slider (41).

4. The multi-stroke amplification mechanism according to claim 1, characterized in that, The frame (10) is provided with a mounting plate (11), and a drive motor (28) is provided on the mounting plate (11). The drive gear (24) is installed on the rotating end of the drive motor (28).

5. The multi-stroke amplification mechanism according to claim 1, characterized in that, The base plate (25) is provided with a fixing seat (33) at both ends of the top. A synchronous wheel (34) is rotatably mounted on each of the two sets of fixing seats (33). The synchronous belt (30) is rotatably wound around the two sets of synchronous wheels (34).

6. The multi-stroke amplification mechanism according to claim 1, characterized in that, A stop block is provided on the end of the fixed guide rail (21) that extends away from the sliding rail (22).

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