Mechanical torque increasing device

Abstract

The invention provides a mechanical torque increasing device, and relates to the technical field of mechanical transmission, in order to solve the problem that in the prior art, the torque increasing efficiency of devices is low, the mechanical torque increasing device comprises an outer acting component, an inner acting component, a plurality of radial actuating arms and a power driving mechanism, and the power driving mechanism drives the inner acting component and the outer acting component to rotate relatively. The inner circumferential working face of the outer acting component is used for forcing a plurality of radial actuating arms on the inner acting component to generate radial motion, and then the radial motion is collected and converted into enhanced torque of the output shaft. Energy conversion is achieved through a deterministic mechanical structure, and the beneficial effects of efficient torque increasing, flexible structure, stable operation and the like are achieved.

Description

Technical Field

[0001] This invention relates to the field of mechanical transmission technology, and in particular to a mechanical torque amplification device. Background Technology

[0002] In the field of mechanical transmission, many applications, such as heavy equipment, robot joints, and electric vehicles, require high output torque at high speeds. Currently, the mainstream technical solution to achieve this function usually uses multi-stage gear reducers, such as complex planetary gear systems or worm gear mechanisms, to reduce the high speed and low torque input of the power source and output it after progressively reducing the speed and increasing the torque.

[0003] However, these traditional solutions have some inherent drawbacks. First, multi-stage transmission means more meshing pairs and transmission links, which leads to greater frictional losses during energy transmission, resulting in low overall transmission efficiency. Second, complex gear systems are typically bulky and heavy, which contradicts the design requirements of modern equipment for lightweight and compact designs. Furthermore, there are other technical solutions that adjust the torsional stiffness at the output end by changing the preload of elastic elements. Their main technical purpose is to control the flexibility of the transmission system, rather than directly and efficiently increasing the output torque.

[0004] Therefore, how to provide a torque-enhancing solution with a more compact structure and higher energy conversion efficiency is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to provide a mechanical torque amplification device to solve the problems of complex structure, high energy loss and low efficiency of existing torque amplification devices. The mechanical torque amplification device of this invention has a novel structure, direct energy conversion, and can achieve high-efficiency torque amplification while saving energy.

[0006] The present invention provides a mechanical torque-increasing device, comprising: An externally acting component, the externally acting component having an inner circumferential working surface; An inner action member is disposed within the outer action member and configured to rotate relative to the outer action member; Multiple radial actuator arms are disposed on the inner actuating member, and their ends are used to interact with the inner circumferential working surface of the outer actuating member during the relative rotation to generate radial motion. The multiple radial actuator arms are connected to the output shaft and convert the radial motion of the radial actuator arms into the torque of the output shaft. A power drive mechanism is used to drive relative rotation between the external action member and the internal action member.

[0007] As a preferred embodiment of the present invention, the inner circumferential working surface has a non-uniform profile along the circumferential direction.

[0008] As a preferred embodiment of the present invention, the non-uniform profile of the inner circumferential working surface is a wavy profile, a cam track profile, or a profile with multiple discrete protrusions.

[0009] As a preferred embodiment of the present invention, the radial actuator arm has an openable and closable structure and includes an elastic element for providing a restoring force.

[0010] As a preferred embodiment of the present invention, the end of the radial actuator arm is provided with a contact head that contacts the inner circumferential working surface.

[0011] As a preferred embodiment of the present invention, the contact head is a cam-type contact head or a block-shaped contact head made of anaerobic metal.

[0012] As a preferred embodiment of the present invention, the output shaft is coaxially arranged with the internal action member and is used to collect the thrust generated by the at least one openable thrust assembly.

[0013] As a preferred embodiment of the present invention, the power drive mechanism includes a power source and a differential drive mechanism, wherein the differential drive mechanism is connected to the power source and is used to drive the inner action member and the outer action member to generate relative rotation.

[0014] As a preferred embodiment of the present invention, the differential drive mechanism is a planetary gear system, which is connected to the power source, the external acting component and the internal acting component in a transmission manner, so as to drive the external acting component and the internal acting component to rotate in opposite directions with different angular velocities.

[0015] As a preferred embodiment of the present invention, the external action component and the internal action component together constitute a unit, and the torque increasing machine includes at least two such units, which are connected in series.

[0016] Compared with the prior art, the present invention has the following positive effects: Compared with existing technologies, this application has the following advantages: 1. High-efficiency torque amplification and energy saving. This application directly drives the radial actuator arm through a deterministic mechanical structure of internal and external acting components, and efficiently converts this radial motion into output torque. This process involves direct energy transfer and high conversion efficiency, enabling a significant increase in output torque with relatively low input power consumption, achieving energy-saving torque amplification. 2. Flexible structure and strong applicability. The basic unit structure of the torque amplification machine in this application is compact. By connecting multiple independent torque amplification units in series or parallel, torque can be multiplied to meet the needs of different working conditions, improving the flexibility and applicability of the equipment. 3. Smooth operation and high reliability. By setting multiple circumferentially distributed radial actuator arms, the thrust generated by each arm can complement each other in time and space, resulting in a smoother final synthesized torque output, reducing impact and vibration, and improving the overall operational reliability of the machine. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a torque converter provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the externally acting component provided in the embodiments of this application; Figure 3 A schematic diagram of the internal action component provided in the embodiments of this application; Figure 4 Detailed structural diagram of the radial actuator arm provided in the embodiments of this application; Figure 5 A schematic diagram of the eccentric planetary gear mechanism provided in the embodiments of this application; Figure 6 This is a schematic diagram of the modular assembly of the torque converter provided in the embodiments of this application.

[0019] Explanation of reference numerals in the attached diagram: 1-Magneto; 2-Metal housing; 3-Flange; 4-Torque shaft / output shaft; 5-Planetary gear assembly; 6-Bearing; 7-External acting component; 8-Radial actuating arm; 9-Internal acting component; 10-Eccentric planetary gear assembly; 11-Center connecting shaft; 12-Wave protrusion; 401-Cam-type contact head; 402-Crank arm; 403-Positioning point; 501-Fixed gear ring; 502-Planetary gear; 503-Planetary center; 504-Double planetary gear center; 505-Sun gear; 800A-Unit A; 800B-Unit B; 801-Total power input; 802-Interstage connection; 803-Total torque output. Detailed Implementation

[0020] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying it, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0023] Example 1 This embodiment provides a torque converter based on radial motion conversion. Please refer to [link / reference]. Figures 1 to 6 This torque converter is designed to efficiently convert low-torque, high-speed rotational power into high-torque output through a sophisticated mechanical structure.

[0024] Reference Figure 1The figure shows a schematic diagram of the overall structure of the torque converter in one embodiment of this application. The torque converter is encased in a robust metal shell 2, which not only provides physical protection for the internal precision components, preventing the intrusion of external environmental factors such as dust and moisture, but also serves as a storage space for circulating lubricating oil. It also acts as the structural base of the entire device, supporting and positioning the internal components. One end of the torque converter has a power input unit, specifically a magneto 1 in this embodiment. The magneto 1 serves as the power drive mechanism of the device, providing initial rotational power. At the other end of the device, a reinforced torque shaft 4 extends, which is the output shaft of the device. Its function is to transmit the converted and amplified torque to an external load, such as a wheel or industrial robotic arm. For ease of installation and connection, a standardized flange 3 can be provided on the body, allowing for convenient rigid connection of the torque converter to other equipment, power sources, or another torque converter.

[0025] The following is combined Figure 2 and Figure 3 This section provides a detailed explanation of the core working components inside the torque converter. Among them, Figure 2 The structure of the externally acting component is shown, and Figure 3 This shows the internal working components housed within it.

[0026] In this embodiment, the power drive mechanism, in addition to the externally visible magneto 1, also includes a set of planetary gear components 5 disposed inside the machine body. After the magneto 1 is energized, its output shaft is connected to the input end of the planetary gear component 5. The planetary gear component 5 serves to transmit power and perform preliminary speed and torque changes, transmitting the high-speed rotation of the magneto 1 to subsequent components. In a specific implementation of this application, the power drive mechanism is configured to drive the externally acting component 7 to rotate, while the internally acting component 9 rotates in the opposite direction.

[0027] External action component 7 is one of the key components for realizing the transformation of motion mode. For example... Figure 2As shown, the external actuator 7 is structurally a hollow heavy metal cylinder with a specific wall thickness to ensure sufficient rigidity and stability during high-speed rotation. Its significant feature lies in its inner wall surface, which is machined into a special inner circumferential working surface. In this embodiment, this inner circumferential working surface has a continuously undulating, non-uniform profile along the circumference, specifically manifested as multiple smoothly transitioning wave-like protrusions 12. It is understood that the number, amplitude, and waveform curve of these wave-like protrusions 12 are precisely designed, directly determining the frequency and stroke of subsequent radial motion. The external actuator 7 is fixedly connected to the output end of the planetary gear component 5 via its outer edge or a specific connecting structure, thereby rotating around its central axis under the drive of the magneto 1. The entire external actuator 7 is precisely supported inside the metal casing 2 by multiple sets of bearings 6 to ensure smooth rotation and effective control of radial and axial runout.

[0028] The inner action member 9 is coaxially mounted within the hollow region of the outer action member 7. For example... Figure 3 As shown, the inner actuating member 9 is a base disc structure. In this embodiment, it is connected to the metal housing 2 or the central shaft system through a bearing system, thereby rotating in the opposite direction to the rotating outer actuating member 7, or rotating according to a preset law. The main function of the inner actuating member 9 is to serve as the mounting base for multiple radial actuating arms 8.

[0029] The radial actuator arm 8 is the actuating element in this embodiment that decomposes rotational motion into radial motion. For example... Figure 3 As shown, multiple (eight in this embodiment) radially actuating arms 8 are radially mounted on the inner actuating member 9 in a circumferentially evenly distributed manner. This evenly distributed design helps to achieve force balance, reduce vibration, and thus make the operation of the whole machine more stable.

[0030] Please refer to further information. Figure 4 This figure shows a detailed structural diagram of a single radial actuating arm 8. Each radial actuating arm 8 is designed as an openable structure, mainly comprising a crank arm 402. The base end of the crank arm 402 is hinged to the inner actuating member 9 via a positioning point 403, ensuring that it can swing slightly around the positioning point. To achieve the opening and closing function, the radial surface of the crank arm is converted into torque of the output shaft through radial mechanical lever motion, for example, a high-strength compression spring. A specially designed contact head is installed at the front end of the positioning point of the crank arm 403. In this embodiment, the contact head is a cam-type contact head 401. As an optional implementation, the cam-type contact head 401 can be a small, externally rubber-coated needle roller bearing, which, when the outer actuating member 7 rotates, can contact the wave protrusions 12 of the inner wall in a rolling manner, thereby greatly reducing sliding friction and improving transmission efficiency and wear resistance.

[0031] Reference Figure 5This diagram illustrates the working principle of an eccentric planetary gear mechanism. A typical eccentric planetary gear mechanism may include a fixed ring gear 501, one or more planetary gears 502, and a sun gear 505. The key to its motion conversion lies in the eccentric design; for example, the center 503 of the planetary gears does not coincide with the center of their orbit (i.e., the center 504 of the double planetary gears). The primary output shaft of the magneto 1 is connected to the double planetary gears 504, causing the planetary gears 502 to perform a complex eccentric oscillating revolution within the fixed ring gear 501. This motion is ultimately converted into the rotation of the sun gear 505 through gear meshing, which in turn drives the external torque shaft / output shaft 4.

[0032] The complete working process of this embodiment is as follows. The power drive mechanism receives power input; specifically, an external power source powers the magneto 1, causing it to start and rotate. Subsequently, the rotational power of the magneto 1 is transmitted through the planetary gear assembly 5, driving the external actuator 7 to rotate at high speed around its central axis. The internal actuator 9 rotates in the opposite direction to the external actuator 7. As the external actuator 7 rotates, the wave-like protrusions 12 on its inner wall act like continuous cam tracks, sequentially rolling over and pushing the cam-type contact heads 401 at the ends of each radial actuator arm 8, thereby driving the radial actuator arms to produce radial motion. When the contact head 401 slides towards the crest of the wave, the radial actuator arm 8 is forced to contract towards the center of the internal actuator 9, compressing its internal spring and converting kinetic energy into the potential energy of the spring; when the contact head 401 slides past the crest towards the trough, the previously compressed spring releases energy, pushing the radial actuator arm 8 outward, ensuring its end remains in contact with the wave-shaped inner wall. Due to the continuous rotation of the external actuator 7, the eight radial actuator arms 8 generate high-frequency radial reciprocating motions with different phases but consistent frequencies. These eight dispersed but powerful radial reciprocating thrusts are efficiently integrated into a single linear reciprocating force, which is then converted into a powerful torque that drives the central connecting shaft 11 and the torque shaft 4 to rotate unidirectionally around the axis. Ultimately, the torque shaft 4 uses this significantly amplified torque output to drive external loads.

[0033] Through the above structure and working process, this embodiment achieves the purpose of efficiently converting input power into enhanced torque in a purely mechanical manner. Its energy transmission is direct, the conversion efficiency is high, and the structure is compact and reliable.

[0034] Example 2 This embodiment is a variant of embodiment 1. The main difference is that the contact method between the radial actuator arm 8 and the inner circumferential working surface of the external action member 7 has been optimized to adapt to certain special working conditions, such as strong magnetic field environments or occasions requiring a specific friction coefficient.

[0035] In this embodiment, the overall structure of the torque converter, including the power drive mechanism (magneto 1, planetary gear component 5), external action component 7, and internal action component 9, can all adopt the same structure and working principle as in Embodiment 1. The improvement in this embodiment focuses on the design of the end contact head of the radial actuator arm 8.

[0036] Specifically, the contact head at the end of the radial actuator arm 8 no longer uses the cam-type contact head 401 as in Embodiment 1, but is replaced by a block-shaped contact head made of a specific metal material. As a preferred implementation, this block-shaped contact head is made of an antimagnetic metal (such as brass or copper). This material choice has two advantages: firstly, materials such as brass or copper have good wear resistance and self-lubricating properties, ensuring minimal wear and smooth operation when sliding in contact with the corrugated protrusions 12 on the inner wall of the external actuator 7; secondly, as an antimagnetic metal, it will not be magnetized in a magnetic field, which allows this device to be used in special environments with strong magnetic interference. This copper block-shaped contact head can be firmly fixed to the end of the crank arm 402 by means of screws, riveting, or dovetail joints.

[0037] As an optional implementation, to further optimize the driving effect, this embodiment can also design the inner circumferential working surface of the externally acting component 7 accordingly. For example, permanent magnets can be embedded at specific positions (such as crests or troughs) of its wave protrusions 12 to form discrete magnetic points. When the inner and outer acting components rotate relative to each other, the antimagnetic metal contact head at the end of the radial actuator arm 8 will be subjected to the repulsive or attractive force of the magnetic field when passing through these magnetic points. By reasonably arranging the polarity of the magnets, the magnetic force can assist in pushing or pulling the radial actuator arm 8 to produce radial movement. For example, setting magnetic poles that repel the magnets (if any) inside the radial actuator arm 8 at the crest can enhance the inward thrust; setting magnetic poles that attract each other at the trough can assist in its outward reset. This combination of magnetic and mechanical forces can further improve energy conversion efficiency or achieve better performance at specific speeds.

[0038] The working process of this embodiment is largely similar to that of Embodiment 1. The power drive mechanism drives the inner and outer acting components to rotate relative to each other. The wave-like protrusions 12 on the inner wall of the outer acting component 7 push the copper contact head at the end of the radial actuator arm 8, forcing it to produce radial reciprocating motion. The remaining force transmission path, that is, the torque conversion process from the radial actuator arm 8 to the final torque shaft 4, is exactly the same as in Embodiment 1.

[0039] This embodiment provides a more reliable and diverse contact solution by replacing the structure and materials of the contact head. It not only reduces the reliance on rolling bearings, but also further expands the design dimensions and application scenarios of the device by introducing the possibility of magnetic assistance.

[0040] Example 3 This embodiment demonstrates the modularity and combinable application capabilities of the torque booster provided in this application. By mechanically coupling two or more independent, standardized torque booster units, the output torque can be easily multiplied to meet the extremely high torque requirements of different application scenarios.

[0041] Please see Figure 6 The figure shows a schematic diagram of the modular assembly of the torque converter. In this embodiment, two independent torque converter units with the same structure as in Embodiment 1 are used, referred to as Unit A (800A) and Unit B (800B), respectively. Each unit completely includes a power drive mechanism, an external acting component 7, an internal acting component 9, and multiple radial actuating arms 8.

[0042] This embodiment demonstrates a series combination method. Specifically, the power from an external total power source (e.g., a main motor) is connected as the total power input 801 to the input terminal of unit A (800A). After unit A (800A) is operating, its output torque shaft 4 is connected to the power input terminal of unit B (800B) through an interstage connection 802. It should be noted that this interstage connection 802 can be a flange connection (using, for example...) Figure 1 The flange 3 shown is a spline connection or coupling, etc. At this time, the torque output by unit A, after the first stage of amplification, becomes the input power to drive unit B. Unit B (800B) performs a second stage of torque amplification on this basis, and its output torque shaft 4 serves as the total torque output 803 of the entire combined system.

[0043] The working process of this series combination is a step-by-step amplification of torque. Assume the output torque of the main motor is... The torque amplification factor of a single torque booster unit is: (Ignoring transmission losses). Therefore, the output torque of unit A (800A) is: The torque As the input to Unit B (800B), after being amplified again by Unit B, the final total torque output is... Approximately equal to Therefore, by connecting two generator units in series, the output torque increases quadratically. Theoretically, more generator units can be connected in series to achieve a geometric amplification of torque, thus obtaining a huge output torque with a small initial power.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications and improvements made by those skilled in the art without departing from the inventive concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A mechanical torque-increasing device, characterized in that, include An externally acting component, the externally acting component having an inner circumferential working surface; An inner action member is disposed within the outer action member and configured to rotate relative to the outer action member; Multiple radial actuator arms are disposed on the inner actuating member, and their ends are used to interact with the inner circumferential working surface of the outer actuating member during the relative rotation to generate radial motion. The multiple radial actuator arms are connected to the output shaft and convert the radial motion of the radial actuator arms into the torque of the output shaft. A power drive mechanism is used to drive relative rotation between the external action member and the internal action member.

2. The mechanical torque-increasing device according to claim 1, characterized in that, The inner circumferential working surface has an uneven profile along the circumferential direction.

3. The mechanical torque-increasing device according to claim 2, characterized in that, The non-uniform profile of the inner circumferential working surface is a wavy profile, a cam track profile, or a profile with multiple discrete protrusions.

4. The mechanical torque-increasing device according to claim 1, characterized in that, The radial actuator arm is an openable structure and includes an elastic element for providing a restoring force.

5. A mechanical torque-increasing device according to claim 1, characterized in that, The radial actuator arm has a contact head at its end that contacts the inner circumferential working surface.

6. A mechanical torque-increasing device according to claim 5, characterized in that, The contact head is a cam-type contact head or a block-shaped contact head made of anaerobic metal.

7. The mechanical torque-increasing device according to claim 1, characterized in that, The output shaft is coaxially arranged with the internal action member and is used to collect the thrust generated by the at least one openable thrust assembly.

8. The mechanical torque-increasing device according to claim 1, characterized in that, The power drive mechanism includes a power source and a differential drive mechanism. The differential drive mechanism is connected to the power source and is used to drive the internal action component and the external action component to rotate relative to each other.

9. A mechanical torque-increasing device according to claim 8, characterized in that, The differential drive mechanism is a planetary gear system, which is connected to the power source, the external action component, and the internal action component to drive the external action component and the internal action component to rotate in opposite directions at different angular velocities.

10. A mechanical torque-increasing device according to claim 1, characterized in that, The external action component and the internal action component together constitute a unit, and the torque increasing machine includes at least two such units, which are connected in series.

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