A device with a cantilever eccentric shaft

Abstract

This invention introduces a highly efficient device designed to convert rotational motion into translational motion for industrial applications It features a robust transmission system with key components, including a crankshaft, transmission disc, and advanced bearings to ensure smooth operation and load balance. The cantilever eccentric shaft arrangement, featuring both eccentric and concentric portions, minimizes vibration while optimizing motion conversion. The system includes balancing weights and a dynamic load balancing mechanism for superior performance. A flexible drive system, incorporating pulleys and timing belts, supports both forward and reverse motion. An automatic grease system ensures reduced friction and long-term durability. This device is particularly suitable for applications such as compressors, pumps, and agitators, providing high precision, efficiency, and ease of maintenance. Its innovative design addresses the growing demand for reliable, scalable motion conversion solutions in industries requiring high performance and operational longevity.

Description

A DEVICE WITH A CANTILEVER ECCENTRIC SHAFTFIELD OF THE INVENTION

[0001] The present disclosure generally relates to the field of motion converter. More particularly the present subject matter relates to the cantilevered eccentric shafts to convert the rotary motion into the translational motion.BACKGROUND

[0002] Circular translation motion is used in rotary machines like scroll pump. Generally, a scroll pump comprises an orbiting scroll with a fixed scroll in arrangement where it make pocket where gas or fluid get trap and pump toward center. This arrangement can be used as vacuum pump, compressor or fluid pump, etc.

[0003] A scroll compressor or pump comprises a pump housing and a drive shaft having an eccentric shaft portion. The shaft is driven by a motor, with the eccentric shaft portion connected to an orbiting scroll. During operation, the rotation of the shaft imparts an orbiting motion to the orbiting scroll relative to a fixed scroll, facilitating the pumping of fluid along a flow path between the pump inlet and pump outlet of the compressor.

[0004] US 3,473,728 discloses a rotary machine, specifically a scroll pump, featuring a mechanism where the orbiting scroll is connected to at least three crankshafts of equal eccentricity that are synchronously coupled to control the circular-translatory movement of the movable means relative to the body during operation. The drive system includes a central drive shaft and coupling members connected to the crankshafts. The machine also uses bellows to isolate the passageway from the atmosphere, which can lead to increased machine size, particularly in high-capacity applications. However, the use of bellows introduces additional complexity, as they generate heat that requires separate cooling, increasing maintenance needs.

[0005] The mechanism described is complex and presents significant maintenance challenges. Furthermore, the design may not be suitable for high- capacity rotary machines, as the bellows and the intricate crankshaft mechanism limit scalability and efficiency. Therefore, further innovation is necessary toimprove the system's simplicity, maintenance, and capacity, as current methods cannot fully meet the demands of larger, more efficient rotary machines.

[0006] Existing scroll pumps, including those disclosed in the patents above, are typically designed for small sizes and low capacities, and are unable to handle high radial loads. As a result, there is a need for a high-capacity scroll pump capable of managing large radial loads. This requirement has been addressed by the present subject matter, which proposes a solution for a high-capacity scroll pump with enhanced load-handling capabilities.OBJECTS OF THE INVENTION:

[0007] The primary objective of the present invention is to provide a device that efficiently converts rotary motion into translational motion using an innovative mechanism.

[0008] Another objective of the present invention is to enable the conversion of rotary motion to translational motion through the use of cantilever eccentric shafts, enhancing performance and load distribution.

[0009] Another objective of the present invention is to achieve translational motion by utilizing the eccentric cantilever shafts to improve the efficiency and balance of the system.

[0010] The present invention further aims to achieve smooth and controlled translational motion using a plurality of cantilever eccentric shafts, ensuring greater stability during operation.

[0011] Another objective is to provide a high-capacity translational motion device capable of handling substantial radial loads, thus making it suitable for high-load industrial applications.

[0012] The present invention also seeks to restrict reverse motion of the cantilever eccentric shafts during power failure, enhancing safety and ensuring that the system remains stable even in the event of an electrical malfunction.

[0013] Still another objective is to allow the translational motion device to be used in a wide range of applications, including but not limited to mechanicalpumps, medical devices, hydraulic systems, and various other applied fields, expanding its versatility and usability.

[0014] The invention aims to improve maintenance ease and operational reliability, with features such as automatic lubrication and simplified assembly, thus reducing downtime and extending the life of the device.

[0015] Furthermore, the present invention is designed to minimize vibrations and enhance load balancing, contributing to the overall stability and smoother operation of the device, even under high-load conditions.

[0016] Additionally, the invention is geared towards providing a more compact and efficient solution for large-capacity systems that require continuous translational motion, overcoming the limitations of existing devices.

[0017] Still another objective of the present invention is to use the translational motion device in various applications by not limiting to any particular field like pump (mechanical), medical, hydraulics, applied areas etc.SUMMARY OF THE INVENTION

[0018] In the present invention, a device is provided for converting rotary motion into translational motion using a cantilever eccentric shaft arrangement, as illustrated in Figures 1 to 8. The system includes a transmission casing (101) enclosing a plurality of synchronized cantilever eccentric shafts (115A & 115B), each supported by a combination of crank bearing hubs (106A & 106B), crank bearings (105A & 105B and 108A & 108B), and secured using crank bearing lock nuts (104 A & 104B). Each eccentric shaft is configured with a distinct eccentric portion followed by a concentric portion, allowing for precise orbital motion. The oil seal bush (111A & 11 IB) and bearing arrangement ensure smooth rotation and axial stability within the crank bearing hub, while balancing weights (117A1 & 117B2) are mounted between the disc (102) and transmission pulleys (124A & 124B) to counteract radial loads and minimize vibration.

[0019] The shafts are synchronized by a mechanical arrangement such as a synchronization belt (125), timing chain, gear system, or synchronized motor, ensuring uniform orbital motion across all shafts. The orbiting disc (102),mounted on the shafts, translates rotary input into translational motion through its guided movement against the crank bearing hubs (106A & 106B). The entire assembly is supported by transmission stands (129A & 129B) and a base skid (130), with motion driven by a motor (131) via a drive pulley (132) and drive belt (126). A reverse rotation mechanism (128) permits bidirectional operation, enhancing the system's versatility.

[0020] This cantilevered design provides significant advantages in load handling, vibration damping, and maintenance accessibility, making it well-suited for high-capacity industrial applications requiring efficient translational motion generation.

[0021] In one aspect of the invention, the disc or disc plate (102) is provided with a plurality of recesses on its rear surface. These recesses are arranged at the same center-to-center distance as the mounting positions of the crank bearing hubs (106A & 106B). Each guide section of the crank bearing hub engages with a corresponding recess in the disc, allowing the disc to rest securely upon and rotate in concert with the crank bearing hubs, thereby facilitating the generation of translational motion from rotary input, as illustrated in Figures 1 and 3.

[0022] In another aspect, a plurality of bearings (105A & 105B, 108A & 108B) are mounted onto each eccentric shaft (115A & 115B) at designated locations along its length. A first bearing is positioned to abut a defined shoulder or step on the shaft, aligning concentrically with a first bore in the transmission casing (101) and supported therein. A second bearing is mounted at a spaced interval from the first, closer to the free cantilevered end of the shaft, and is aligned with a second bore in the transmission casing. A locking nut (104A & 104B) is then fastened at the end of the shaft to axially secure the entire bearing assembly, ensuring both radial and axial stability during operation.

[0023] In yet another aspect, a balancing weight (117A1 & 117B2) is mounted on each eccentric shaft between the disc (102) and the pulley (124A & 124B). This placement can be adjusted depending on the mass distribution of the system to counterbalance the dynamic loads caused by eccentric rotation, therebyminimizing vibration and enhancing operational stability, particularly under highspeed or high-load conditions.

[0024] In a further aspect, a flywheel or pulley (124A & 124B) is mounted at the drive-end of each eccentric shaft. This element interfaces with the drive belt (126) or synchronization belt (125), transmitting power from the motor (131) to the transmission system and coordinating the motion of all shafts.

[0025] The plurality of cantilever eccentric shafts (115A & 115B) are synchronized via a synchronization arrangement, which may include a timing belt (125), timing chain, gearing system, or electronic motor control, ensuring all shafts move in phase. This synchronization is critical for maintaining uniform translational motion across the device.

[0026] The first and second bearings (105A & 105B, 108A & 108B) installed within each crank bearing hub may be of identical size or may differ depending on load and design requirements. The bearing types may include ball bearings, cylindrical roller bearings, spherical roller bearings, needle bearings, taper roller bearings, or bushings, chosen based on operating conditions, load capacity, and maintenance requirements.

[0027] The disc (102) used in the invention is not limited to a specific application and may serve in various devices relying on translational motion, including but not limited to scroll compressors, scroll vacuum pumps, agitating flow reactors, centrifuges, and fluid pumps. Its structural and functional adaptability enables use across multiple industrial domains.

[0028] To facilitate a clearer understanding of the invention’s structure and operation, reference is made to the accompanying Figures 1 through 8, which are provided for illustrative purposes only. These drawings are not intended to limit the scope of the invention but to aid in visualizing its mechanical configuration and component interaction.BRIEF DESCRIPTION OF THE DRAWINGS:

[0029] Some non-limiting exemplary embodiments or features of the disclosed subject matter are illustrated in the following drawings.

[0030] Fig. 1, illustrates an exploded view of a device having a cantilever eccentric shaft arrangement.

[0031] Fig. 2 to 8 illustrates the various views and arrangements of a device having a cantilever eccentric shaft arrangement.

[0032] FIG. 9 is a side elevation view of a synchronized shaft assembly, which maintains phase alignment between orbiting and stationary components.

[0033] With specific reference now to the drawings in detail, it is stressed that the particulars shown are by way of example and for purposes of illustrative discussion of some embodiments of the invention. In this regard, the description taken with the drawings makes apparent to those skilled in the art how embodiments of the invention may be practiced.

[0034] Identical, duplicate, equivalent, or similar structures, elements, or parts that appear in one or more drawings are generally labelled with the same reference numeral, optionally with an additional letter or letters to distinguish between similar entities or variants of entities and may not be repeatedly labeled and / or described. References to previously presented elements are implied without necessarily further citing the drawing or description in which they appear.

[0035] Dimensions of components and features shown in the figures are chosen for convenience or clarity of presentation and are not necessarily shown to scale or true perspective. For convenience or clarity, some elements or structures are not shown or shown only partially and / or with different perspective or from different point of views.DETAILED DESCRIPTION OF THE PRESENT INVENTION:

[0036] It should be noted that the description and figures merely illustrate the principles of the present subject matter. It should be appreciated by those skilled in the art that conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present subject matter. It should also be appreciated by those skilled in the art that by devising various arrangements that, although not explicitly described or shown herein, embody the principles of the present subjectmatter and are included within its spirit and scope. Furthermore, all examples recited herein are principally intended expressly to be for pedagogical purposes to aid the reader in understanding the principles of the present subject matter and the concepts contributed by the inventor(s) to furthering the art and are to be construed as being without limitation to such specifically recited examples and conditions. The novel features that are believed to be characteristic of the present subject matter, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures.

[0037] These and other advantages of the present subject matter would be described in more detail with reference to the following figures. It should be noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its scope.

[0038] Referring to Fig. 1, which illustrates an exploded view of a device having a cantilever eccentric shaft arrangement with the transmission casing (101). The device, having a cantilever eccentric shaft arrangement, is designed for converting rotational motion into translational motion and includes the following key components:Transmission Box: Houses the mechanical components and facilitates the movement of various parts.Cantilever Eccentric Shaft: Includes both eccentric and concentric portions. The eccentric portion includes an oil seal bush and two bearings (105A & 105B, 106A & 106B) mounted onto the shaft.Crank Bearing Hub (106A & 106B): Supports the bearings and ensures the proper alignment of the eccentric shaft and operably connect the orbiting disc (102).Disc / Orbiting Disc / Disc Plate (102): Houses a plurality of recesses on its back surface, which correspond to the crank bearing hub. It transmits motion to other components.The synchronization system is driven through a series of pulleys (124A & 124B), flywheels, and timing belts (125) or chains, along with the transmission system to ensure smooth operation.The cantilever eccentric shaft consists of two main sections: an eccentric portion and a concentric portion. The eccentric portion starts at one point, followed by the concentric portion. The assembly incorporates various components such as crank front bearing (105A & 105B) and crank bearing hub (106A & 106B), ensuring the shaft is firmly supported throughout its length.A crank bearing lock nut (104 A & 104B) is placed at specific intervals to secure the bearings in place.The crankshaft also has crank shaft seals (109 A & 109B) to prevent any leakage of lubrication.Further, the disc or disc plate has a series of recesses on the back surface, which are aligned with the crank bearing hub. The crank bearing hub’s guide mechanism ensures that the disc is securely attached and operates without wobbling or misalignment.Additionally, the device features front seals (113A & 113B) and front bush (114A & 114B) for added sealing and support. The bearings (116A & 116B) at various locations on the shaft are mounted for smooth rotation and minimal friction.Balancing is provided by load balancing components (117A1 & 117B2, 117A2 & 117B2, 117A3 & 117B3), which help maintain stability during operation. The flywheel / pulley (124 A & 124B) is attached to the shaft to store rotational energy, while the synchronization belt (125) ensures consistent power transfer to other parts.The crank bearing hub (both 105A & 105B and 106A & 106B) may vary in size, with potential differences between the first and second bearings, which could be ball bearings, roller bearings, taper roller bearing, or spherical roller bearings, depending on the application requirements.

[0039] Fig. 3 illustrates an isometric view of the assembly of the device, supported by a guide rail, ensuring stability and flexibility. The supportmechanism may include pipes or guide rails, enabling the device to slide as needed during operation.

[0040] Fig. 4 shows a top-side cross-sectional view of the device, demonstrating how the various components are engaged and operate together, as described in Fig. 1.

[0041] Fig. 5 provides an exploded view of the device without the transmission box, illustrating the internal components and their arrangement.

[0042] Figs. 6 show cross-sectional and isometric views of the crankshaft fitted into the crank bearing hub, providing a clearer understanding of how the shaft interacts with other components like the bearings and seals.

[0043] Fig. 7 illustrates the assembled view of the device with the cantilevered eccentric shaft, showing pulleys at one end of the shaft and the orbiting disc at the other end. The rotational energy from the pulleys is converted into translational motion via the disc and synchronization belt.

[0044] Finally, Fig. 8 explains the reverse rotation mechanism, which is crucial for specific applications where reverse movement is necessary. This is achieved with the reverse rotation arrangement (128) and reverse rotation belt (133), which allow the system to reverse the direction of motion when required.

[0045] Referring to Fig. 1, an exploded view of the device with a cantilever eccentric shaft arrangement is shown. The device is engineered to convert rotational motion into translational motion. The assembly includes a transmission casing (101), which houses and protects the internal components, including a transmission disc (102) and various mechanical elements designed for precise movement and operation.The primary component of the device is the cantilever eccentric shaft, which is composed of two sections: an eccentric portion and a concentric portion. The eccentric portion begins at one point of the shaft and continues until it transitions into the concentric portion. The eccentric portion is mounted with an oil seal bush, ensuring proper sealing and minimizing lubrication leakage. A first bearing (105A & 105B) is mounted on the shaft after the eccentric portion, with its inner race supported by the oil seal bush. The outer race of the first bearing rests against astep on the crank bearing hub (106 A & 106B), while a second bearing (106 A & 106B) is positioned further along the shaft to provide additional support.The assembly is secured by a crank bearing lock nut (104A & 104B), which tightens the bearings and stabilizes the crankshaft within the crank bearing hub. This ensures that the shaft remains securely positioned, preventing any movement or misalignment during operation.The crank bearing hub (106A & 106B) plays a pivotal role in providing structural support for the crankshaft and bearings, ensuring smooth rotational movement. A crank front bearing (105A & 105B) is also included, which further stabilizes the shaft as it rotates. Additionally, the assembly incorporates crank shaft seals (109A & 109B) to prevent any leakage of lubricants or contaminants from entering the system.Mounted on the crankshaft is the disc, which may also be referred to as the orbiting disc or disc plate (102). This component is crucial for converting the rotational motion of the crankshaft into translational motion. The disc is equipped with a series of recesses on its back surface, which correspond to the crank bearing hub. These recesses provide a guide for the hub and ensure proper alignment. The crank bearing hub guides the disc into position and allows it to rotate smoothly while maintaining its engagement with the hub.As the shaft rotates, the balancing weight (117A1 & 117B2, 117A2 & 117B2, 117 A3 & 117B3) is strategically placed along the shaft to counteract any imbalances in the system, ensuring smooth operation. The flywheel / pulley (124A & 124B) is mounted on the shaft at the opposite end of the disc. The flywheel stores rotational energy and ensures consistent motion throughout the system.The device also incorporates a synchronization arrangement. This may include a synchronization belt (125) or other mechanical means such as a timing belt, timing chain, or gears. The synchronization system ensures that the various components, such as the motor (131) and drive pulley (132), operate in harmony, preventing slip or misalignment of the moving parts.The motor transmits power to the system through the drive belt (126), which drives the drive pulley (132), ultimately powering the cantilever eccentric shaft.This allows the system to operate efficiently and reliably, converting rotational motion from the motor into the desired translational motion at the disc.Further components of the device include front seals (113A & 113B) and front bushings (114A & 114B), which serve as protective elements to reduce wear and prevent leakage from the front portion of the assembly. The transmission back bearings (119A & 119B) and back bushings (121A & 121B) provide additional support to the rear end of the device, ensuring stable motion and preventing damage due to excessive friction.The reverse rotation arrangement (128) allows the system to operate in reverse, if necessary. This is facilitated by the reverse rotation belt (133) and other related components. The reverse rotation system is useful in applications that require a change in the direction of motion, enabling the device to function in both forward and reverse directions.The overall device is supported by a transmission stand (129A & 129B) and mounted on a base skid (130), ensuring a stable foundation. The stand may be constructed from materials such as steel or alloys, providing the necessary strength to support the weight and operation of the device. In some embodiments, the device can be attached to guide rails or pipes, allowing for ease of movement along the support structure. This design permits the device to slide or hang on the support structure, depending on the operational requirements.

[0046] The present invention relates to a device that utilizes a cantilever eccentric shaft arrangement designed to convert rotational motion into translational motion. This device is particularly useful in applications that require precise motion control, such as in pumps, compressors, vibrational systems, and other machinery. The device comprises several critical components, each designed to work in harmony to achieve efficient and reliable operation.

[0047] The core of the invention is the cantilever eccentric shaft, which consists of two distinct portions: an eccentric portion and a concentric portion. The eccentric portion begins at one point of the shaft and transitions into the concentric portion at another point, allowing for smooth conversion of rotational motion into translational motion. The shaft is mounted within the transmissioncasing, which serves to protect the internal components and provide structural support. The crank bearing hub plays a crucial role in this setup, as it supports the bearings and helps maintain proper alignment of the crankshaft during operation.

[0048] To ensure smooth functioning, the eccentric portion of the shaft is fitted with an oil seal bush that prevents contaminants from entering the bearing system and helps maintain proper lubrication. Additionally, the first bearing is mounted on the shaft, with its inner race supported by the oil seal bush, while the outer race rests against the crank bearing hub. A second bearing is placed further along the shaft to provide additional support. These bearings work together to maintain the stability and rotational movement of the crankshaft. The entire bearing system is secured by a crank bearing lock nut, which prevents any unwanted movement or misalignment during operation.

[0049] The device further includes a transmission disc, also known as an orbiting disc or disc plate, which is mounted onto the eccentric shaft. The disc is responsible for converting the rotational motion of the crankshaft into the desired translational motion. The back surface of the disc features a series of recesses that correspond to the crank bearing hub, ensuring proper alignment and smooth interaction between the two components. The crank bearing hub serves as a guide for the disc, allowing it to move with minimal friction and ensuring that the system operates with precision.

[0050] To counterbalance the load on the shaft, which is caused by the eccentric arrangement, balancing weights are positioned along the shaft. These weights are placed strategically between the disc and the pulleys, depending on the specific needs of the system. The balancing mechanism ensures that the device operates smoothly, reduces vibration, and enhances the overall stability of the system. The weights can be adjusted to optimize performance based on the load and operating conditions, making the device highly flexible and adaptable to a variety of applications.

[0051] In addition to the mechanical components, the device also incorporates several lubrication points or greasing holes at critical locations, such as on the bearings and other moving parts. These lubrication points ensure that the deviceremains well-lubricated during operation, minimizing wear and tear and extending the lifespan of the components. The inclusion of these lubrication features makes the device easy to maintain and helps to ensure reliable, long-term performance.

[0052] The system is powered by a motor, which drives a drive pulley connected to the cantilever eccentric shaft through a drive belt. The motor provides the necessary rotational energy to drive the entire system.

[0053] Additionally, a synchronization arrangement ensures that the motor and other components, such as the flywheels and pulleys, operate in unison. This synchronization system helps to maintain uniform motion across the device, preventing any misalignment or slippage that could lead to inefficient operation or damage to the components.

[0054] To protect the internal components from leakage, seals are provided at various points, such as at the crankshaft and the bearings. These seals prevent the loss of lubricants and protect the system from contamination.

[0055] The device also includes bushings that further reduce friction and support the bearings, ensuring smooth operation and reducing the need for frequent maintenance.

[0056] The entire assembly is mounted on a base skid and supported by a transmission stand, providing a stable foundation for the device during operation. The system is designed to be mounted on guide rails or pipes, allowing for easy movement and adjustment as needed. This flexibility ensures that the device can be installed and operated in a wide range of settings, making it adaptable to various industrial applications.

[0057] In addition to its primary function of converting rotational motion into translational motion, the device is also equipped with a reverse rotation arrangement. This allows the device to operate in reverse, enabling it to be used in applications where directional control is required. The reverse rotation mechanism is facilitated by a reverse rotation belt, which allows the system to reverse its direction without any significant loss in performance.

[0058] The device is versatile and can be used in a wide range of applications, such as in scroll pumps, vibrational motion systems, vacuum pumps, and manyother machines where translational motion is required. Its ability to operate efficiently in both forward and reverse directions makes it suitable for a variety of industrial and commercial uses, including those that require precise motion control, load balancing, and reduced vibration.

[0059] The overall design of the device focuses on enhancing performance and reliability. The cantilever eccentric shaft arrangement ensures that the device operates smoothly, with reduced vibration and improved load balancing. The incorporation of lubrication points, balancing weights, and synchronization features further enhances the device’s efficiency and longevity. These attributes make the device ideal for use in industries where high performance, minimal maintenance, and reliability are critical.

[0060] The invention provides a highly effective device that converts rotational motion into translational motion. The combination of a cantilever eccentric shaft, load balancing mechanism, synchronization arrangement, lubrication features, and reverse rotation functionality ensures smooth and efficient operation. The device is suitable for a wide range of applications, including pumps, compressors, and vibrational systems, and is designed to perform reliably in various industrial environments. The detailed arrangement of components and their interaction contributes to the device’s superior performance, making it a valuable addition to machinery that requires precision and high efficiency.

[0061] The present invention relates to a device that employs a cantilever eccentric shaft arrangement for the conversion of rotational motion into translational motion, with specific applications in machinery such as pumps, compressors, vibrational systems, and other equipment requiring controlled motion transfer. As illustrated in Fig. 1, the device includes a transmission casing (101) which encloses the key mechanical components, including the transmission disc (102), bearings, pulleys, and other interrelated parts. The design of the system facilitates the transformation of rotational motion into a smooth, controlled translational motion.

[0062] The central component of the system is the cantilever eccentric shaft. The shaft is designed with an eccentric portion and a concentric portion. Theeccentric portion, beginning at one end of the shaft, facilitates the conversion of rotational motion into a reciprocating translational motion. As seen in Fig. 1, the shaft transitions from its eccentric portion to a concentric portion at a defined point, where the shaft maintains a uniform diameter. The crank bearing hub (106 A & 106B) supports and positions the bearings, ensuring precise alignment of the shaft during operation.

[0063] The eccentric crank shaft is equipped with an oil seal bush that prevents contamination and helps maintain the lubrication integrity of the bearings. The first bearing (105A & 105B) is mounted on the shaft, with its inner race supported by the oil seal bush and its outer race resting on a step formed within the crank bearing hub. A second bearing (108A & 108B) is mounted at a further distance along the shaft, providing additional support. These bearings are secured in place using a bearing lock nut (104A & 104B), which ensures proper compression and prevents unwanted axial movement.

[0064] Further along the shaft, the transmission disc (102) is mounted. This disc, or alternatively a disc plate or orbiting disc, is integral to the motion conversion process. As shown in Fig. 3, the disc's back surface contains a series of recesses corresponding to the crank bearing hub. This alignment ensures that the disc remains fixed to the crank bearing hub, transferring the rotational motion of the eccentric shaft into translational motion.

[0065] In order to counterbalance the load on the shaft caused by the eccentric mass distribution, balancing weights (117A1 & 117B2, 117A2 & 117B2, 117A3 & 117B3) are distributed along the length of the shaft. These weights are strategically positioned between the transmission disc and the plurality of pulleys (124A & 124B) to mitigate any imbalances and minimize vibration. The weights are flexible in placement and can be positioned at various points along the shaft to optimize performance. This arrangement is designed to ensure smooth operation by maintaining equilibrium and reducing mechanical stresses.

[0066] Lubrication plays a critical role in minimizing wear and friction between the moving parts of the device. As illustrated in Fig. 1, lubrication holes or grease points are integrated at strategic locations, such as on the bearings and shafts, toallow for periodic oiling or greasing. This reduces friction between the moving parts, extends the service life of components, and enhances overall reliability. These features can be seen in the arrangement of the greasing points at critical interfaces between the bearings and the shaft.

[0067] The device also incorporates a synchronization arrangement, which is critical for ensuring the uniform motion of all components, including the motor (131), drive pulley (132), and synchronization belt (125). The drive belt transmits power from the motor to the eccentric shaft, ensuring consistent rotational motion and preventing any misalignment between the moving parts. This synchronization is necessary to ensure that the eccentric shaft and its associated components, such as the pulleys and flywheel assemblies, operate in unison.

[0068] To seal and protect the internal components, the device includes seals (109A & 109B, 113A & 113B) and bushings (114A & 114B, 121A & 121B). These seals prevent oil or lubricant leakage, ensuring that the system remains properly lubricated during operation. The bushings serve to reduce friction between the moving parts, such as the crankshaft and crank bearing hub, while also helping to absorb axial and radial forces generated during operation.

[0069] The entire assembly is mounted on a base skid (130), providing stability during operation. The device is supported by a transmission stand (129A & 129B), which ensures proper alignment and maintains the position of the system during use. The device is designed to be mounted on guide rails or pipes, allowing it to be positioned and moved as necessary for installation and operation. This flexible support structure provides the option for linear movement, where required, and can be used to integrate the device into various machinery or system setups.

[0070] An additional feature of the device is the reverse rotation arrangement (128), which allows the system to operate in reverse. This feature, facilitated by a reverse rotation belt (133), enables the device to be used in applications where directional control is necessary, allowing the system to reverse its operation without significant loss in performance.

[0071] The device can be used in a wide range of applications, particularly in systems requiring translational motion such as scroll pumps, vacuum pumps, and vibrational motion systems. The mechanical configuration of the eccentric shaft and transmission system makes the device suitable for high-performance applications where precise control over motion and minimal vibration are crucial. The ability to reverse the direction of motion further increases the versatility of the system, enabling it to serve a broader array of functions in various industrial sectors.

[0072] Present invention provides an efficient and reliable means for converting rotational motion into translational motion. The cantilever eccentric shaft, in combination with the various bearings, seals, balancing weights, and lubrication mechanisms, ensures that the system operates smoothly with minimal vibration and maximum performance. The device is adaptable to a variety of applications, including those requiring precise motion control, and is designed for ease of maintenance and long-term reliability. This configuration represents an innovative solution for applications where controlled, reliable, and efficient motion conversion is required.

[0073] The present invention pertains to a highly efficient device featuring a cantilever eccentric shaft arrangement, specifically designed to convert rotational motion into translational motion with enhanced precision, stability, and reliability. This system incorporates a sophisticated transmission mechanism enclosed within a transmission casing (101) and is optimized for various industrial applications where smooth and controlled motion is crucial. As depicted in Fig. 1, the device consists of a series of interconnected components, including the transmission disc (102), crank bearing hubs (106A & 106B), eccentric shaft, balancing weights, and synchronization belts, all working in unison to ensure optimal motion conversion.

[0074] The central element of the device is the cantilever eccentric shaft, which features both an eccentric portion and a concentric portion. The eccentric portion of the shaft initiates the conversion from rotary to translational motion, while the concentric portion supports the transition into the final desired motion state. This eccentric design introduces a non-uniform mass distribution, which necessitates aload balancing mechanism for effective operation. As shown in Figs. 1 and 4, balancing weights (117A1 & 117B2, 117A2 & 117B2, 117A3 & 117B3) are strategically placed along the shaft to counteract any imbalance and reduce the resulting vibration, thereby ensuring stable operation and extending the life of the device.

[0075] The crank bearing hubs (106A & 106B) are critical to the support and alignment of the eccentric shaft. These hubs house bearings (105A & 105B, 106A & 106B) that allow for smooth axial rotation while providing the necessary support to the eccentric shaft. The first bearing is positioned such that its inner race is supported by an oil seal bush, providing an additional layer of protection against contaminants, while the second bearing is mounted further along the shaft to further reduce radial loads and minimize axial displacement. The entire assembly is secured using bearing lock nuts (104A & 104B) to ensure structural integrity.

[0076] A transmission disc (102), often referred to as the orbiting disc, is mounted on the eccentric shaft and functions as a key element in converting rotary motion into linear motion. The disc is designed with recesses on its back surface, corresponding to the positioning of the crank bearing hub, which enables a precise interaction between the two components. As shown in Fig. 3, this interaction ensures that the transmission disc remains firmly affixed to the eccentric shaft, enabling the transfer of motion.

[0077] In addition to the core motion conversion elements, the system incorporates several lubrication mechanisms to minimize wear and friction. Integrated automatic grease devices (107A & 107B) supply continuous lubrication to the bearings, ensuring that the moving parts remain adequately lubricated and reducing the need for frequent maintenance. Lubrication holes and grease points are also provided at critical locations throughout the device to further enhance the efficiency and longevity of the system.

[0078] To protect the internal components, a series of seals (109A & 109B, 113A & 113B) are strategically placed to prevent leakage of oil or lubricant. These seals also serve to protect the bearings and other sensitive parts fromcontaminants, thereby maintaining the integrity of the system during operation. Bushings (114A & 114B, 121A & 121B) are used in key locations to reduce friction and absorb axial and radial forces generated during operation, further enhancing the device’s durability and reliability.

[0079] The device's reverse rotation arrangement (128) is a notable feature, enabling the system to operate in both forward and reverse directions. This dualdirection capability offers exceptional versatility, allowing the device to be adapted for a wide range of applications where directional control is required. The reverse rotation belt (133) works in tandem with the motor (131) and drive pulley (132) to facilitate this reversible operation, ensuring that the device can be used for both standard and reverse motion tasks.

[0080] Additionally, the device is designed with a synchronization system that ensures all components work in harmony. The synchronization belt (125) ensures that the various pulleys and other parts of the transmission system operate in unison, preventing misalignment and ensuring consistent motion transfer. The drive belt (126) facilitates the transfer of power from the motor to the eccentric shaft, maintaining uniform rotational motion across the system.

[0081] The entire assembly is supported by a transmission stand (129A & 129B) and a base skid (130), providing the necessary stability during operation. The system is designed to be mounted on guide rails or pipes, allowing it to be moved or positioned as needed, offering flexibility in installation and operation. The drive guard (127) is incorporated into the design to provide protection to the moving components, minimizing the risk of damage or injury during operation.

[0082] The load balancing system is another critical feature of the invention. By strategically placing the balancing weights along the shaft, the device minimizes the forces that would otherwise cause excessive vibration, improving the overall stability of the system. The design ensures that the device operates with minimal oscillations, resulting in smoother operation and reduced wear on the components.

[0083] The cantilever eccentric shaft arrangement, as illustrated in Fig. 1 and Fig. 2, is engineered to deliver a precise and smooth conversion of rotary motion to linear motion, making it highly suitable for industrial applications such as scrollpumps, centrifuges, vibrational systems, and fluid pumps. The load balancing mechanism, combined with the synchronization arrangement and continuous lubrication, ensures that the system operates with maximum efficiency and minimal downtime, even under heavy operational loads.

[0084] The advantages of this device are clear. Improved load balancing and reduced vibration contribute to a smoother operation, extending the lifespan of the device. The ease of maintenance provided by the cantilever design and accessible components ensures that servicing the device is straightforward and quick. Furthermore, the continuous lubrication provided by the integrated grease devices reduces the frequency of maintenance, ensuring the system remains in optimal working condition for extended periods. The reverse rotation capability further enhances the flexibility and versatility of the device, allowing it to be adapted to various applications.

[0085] The device described herein offers an advanced solution for converting rotational motion to translational motion, with a focus on performance, reliability, vibration reduction, and ease of maintenance. Its cantilever eccentric shaft design, along with its integrated lubrication system and load balancing mechanism, provides an efficient and durable solution for various industrial applications requiring precise motion control. This innovative arrangement ensures that the device performs optimally over long periods, making it ideal for high-demand environments.

[0086] Further, referring to Fig. 1, an exploded view of the device with a cantilever eccentric shaft arrangement is shown. The device is designed to convert rotational motion into translational motion and includes a transmission casing (101) that houses and protects internal components. The device comprises a transmission disc (102) and several interconnected components that are crucial for the operation of the system.

[0087] Cantilever Eccentric Shaft and Bearings: A central feature of the device is the cantilever eccentric shaft, which is composed of two sections: an eccentric portion and a concentric portion. The eccentric portion begins at one point of the shaft and transitions into the concentric portion at another point. This designallows for a smooth conversion of rotational motion into translational motion. As shown in Fig. 3, the crank bearing hub (106A & 106B) serves as a crucial component in this arrangement, supporting the bearings and ensuring proper alignment of the shaft.

[0088] Mounted onto the shaft is an oil seal bush, which prevents leakage of lubricants or contaminants into the bearing system. The first bearing (105A & 105B) is mounted on the eccentric portion of the shaft, with its inner race supported by the oil seal bush, and the outer race resting on the crank bearing hub. The second bearing (106A & 106B) is mounted further along the shaft and supports the system. The crank bearing lock nut (104A & 104B) secures the bearings, maintaining alignment and preventing movement during operation.

[0089] The combination of the bearings and the crank bearing hub provides stable support for the crankshaft and ensures minimal friction during the operation of the device.

[0090] Disc, Synchronization, and Load Balancing: The disc, also referred to as the orbiting disc or disc plate (102), is designed to convert the rotational motion of the crankshaft into translational motion. The back surface of the disc features a plurality of recesses that align with the crank bearing hub. The hub’s guide mechanism ensures that the disc is securely connected, facilitating proper motion without misalignment.

[0091] The system incorporates load balancing components (117A1 & 117B2, 117A2 & 117B2, 117A3 & 117B3) that help stabilize the device by counteracting any imbalances that occur during operation. The load balancing mechanism ensures smooth and vibration-free operation, particularly when the system is subjected to varying loads. The positioning of the balancing weight can be adjusted along the length of the shaft.

[0092] Additionally, the device includes flywheels or pulleys (124A & 124B) mounted at one end of the crankshaft, which store rotational energy. The synchronized synchronization belt (125) facilitates the transmission of power from the motor to the crankshaft and pulleys, ensuring that the system operates smoothly and in unison.

[0093] Sealing and Protection: The device employs crank shaft seals (109A & 109B) and front seals (113A & 113B) to prevent the leakage of lubricants, thereby ensuring long-term efficiency and reliability. The front bush (114A & 114B) and back bush (121A & 121B) further contribute to reducing wear by providing additional support at both the front and rear portions of the device.

[0094] Transmission System and Reverse Rotation: The motor (131) powers the system through a drive pulley (132) and drive belt (126). The motor transmits power to the crankshaft and drives the device’s operation, converting rotational motion into translational motion at the disc. The reverse rotation arrangement (128) allows the system to operate in reverse when required, which is facilitated by the reverse rotation belt (133).

[0095] Structural Support and Alignment: The entire device is supported by a transmission stand (129A & 129B) and mounted on a base skid (130), providing a stable foundation for the system. The support can be constructed from various materials, including steel, alloys, or non-metals, depending on the intended application. The system may also be attached to guide rails or pipes, allowing for movement along the support structure.

[0096] Additional Components and Functionalitya:Transmission back bearings (119A & 119B) and transmission back cover (122A & 122B) provide support for the rear end of the transmission box, ensuring stability during operation.The transmission lock nut (120A & 120B) secures the back bearings, preventing movement and ensuring proper alignment.

[0097] The device described herein is a highly efficient system for converting rotational motion into translational motion using a cantilever eccentric shaft arrangement. The integration of bearings, synchronization components, balancing weights, and sealing mechanisms ensures smooth and reliable operation, as outlined in the claims. The system's flexibility, including its reverse rotation functionality and stable mounting, makes it suitable for a wide range ofapplications, such as compressors, pumps, agitators, and other systems requiring translational motion.

[0098] Additionally, referring to Fig. 1, an exploded view of the device with a cantilever eccentric shaft arrangement is shown. The device is designed to convert rotational motion into translational motion, and the system includes a transmission casing (101) that houses and protects the internal components, such as the transmission disc (102) and other essential mechanical elements. The interaction of these components facilitates the conversion process, providing precise control of motion.

[0099] Cantilever Eccentric Shaft and Bearings: A central component of the device is the cantilever eccentric shaft, which is divided into two sections: an eccentric portion and a concentric portion. The eccentric portion begins at one point of the shaft and transitions into the concentric portion at another point. This design facilitates the conversion of rotational motion into translational motion. The crank bearing hub (106 A & 106B) serves as a critical structural element, supporting the bearings and ensuring the proper alignment and smooth movement of the shaft.

[0100] Mounted onto the eccentric portion of the shaft is an oil seal bush, which prevents leakage and contamination while maintaining lubrication integrity. A first bearing (105A & 105B) is positioned along the eccentric portion, with its inner race supported by the oil seal bush and the outer race resting against the crank bearing hub. A second bearing (106A & 106B) is placed further along the shaft to provide additional support, ensuring that the crankshaft remains stable during operation. The bearings are held securely in place by a crank bearing lock nut (104 A & 104B), preventing movement and maintaining alignment.

[0101] This setup, in combination with the crank bearing hub, provides smooth rotational movement for the crankshaft, thus reducing friction and wear.

[0102] Load Balancing and Disc Alignment: The disc (102), which can be referred to as the orbiting disc or disc plate, is mounted on the eccentric shaft and is responsible for converting the rotational motion of the crankshaft into translational motion. The back surface of the disc is equipped with a series ofrecesses, which correspond to the crank bearing hub for proper alignment. The crank bearing hub acts as a guide, ensuring that the disc rotates smoothly.

[0103] As indicated, to counteract the load on the shaft, balancing weights, keys and clamps (117A1 & 117B2, 117A2 & 117B2, 117A3 & 117B3) are strategically positioned along the shaft. These weights are placed to balance the load on one side of the eccentric shaft, helping reduce vibration and ensuring stable motion. The balancing weights can be positioned anywhere between the disc and the plurality of pulleys based on the specific requirements of the system. This balancing mechanism outlines how the placement of the weights helps to counteract the forces on the shaft.

[0104] Oiling and Greasing: To ensure smooth operation and minimize wear and tear, the device may include a plurality of oil or greasing points or holes at various locations, such as on the bearings or other critical components, as required. These lubrication points allow for easy maintenance and ensure the longevity of the device by providing the necessary lubrication during operation.

[0105] Synchronization and Power Transmission: The device incorporates a synchronization arrangement to ensure that all components operate in unison. This includes a synchronization belt (125) that synchronizes the motor (131) and drive pulley (132) with the cantilever eccentric shaft. The synchronization system prevents any slip between the moving parts and ensures uniform operation across all components. The drive belt (126) transmits power from the motor to the crankshaft, driving the rotational motion and allowing for the effective conversion of motion into the desired translational motion at the disc.

[0106] Sealing, Protection, and Structural Support: The device is equipped with seals (109A & 109B, 113A & 113B) and bushings (114A & 114B, 121A & 121B) to protect against the leakage of lubricants and reduce wear on moving parts. These sealing and protection mechanisms contribute to the durability and reliability of the system.

[0107] The entire system is mounted on a base skid (130) and supported by a transmission stand (129A & 129B), providing stability and ensuring proper alignment during operation. The device may be attached to guide rails or pipes,allowing for movement along the support structure. This design provides flexibility in installation and operation, ensuring the device can be easily integrated into various setups.

[0108] Reverse Rotation and Additional Applications: The reverse rotation arrangement (128) provides the ability to operate the system in reverse. This is facilitated by the reverse rotation belt (133) and other associated components, enabling the device to operate in both forward and reverse directions. The reverse rotation functionality expands the versatility of the device, making it suitable for applications where directional control is necessary.

[0109] The device is highly versatile and can be utilized in a wide range of machinery where translational motion is required. It can be used in applications such as scroll pumps, vibrational motion systems, vacuum pumps, and any other system requiring translational or vibrational motion.

[0110] Enhancing Performance and Reliability: The primary objective of the invention is to provide a device equipped with a cantilever eccentric shaft arrangement that enhances the performance and reliability of machinery. The cantilever eccentric shaft, in combination with the load balancing mechanism, minimizes vibration and improves the operational efficiency of the device. The incorporation of easy-to-maintain lubrication points ensures reliable operation over extended periods. These features make the device suitable for a wide range of industrial applications, including those that demand high load balancing and reduced vibration. The device described herein utilizes a cantilever eccentric shaft arrangement to convert rotational motion into translational motion efficiently. The integration of components such as balancing weights, synchronization belts, seals, and oil lubrication points ensures smooth operation and stability. The system's flexibility allows it to be applied in a variety of machines, including scroll pumps and vacuum devices, making it highly adaptable to different industrial needs.

[0111] Further, the plurality of shafts being the eccentric have a load on their one side and to counter this weight the balancing weights are placed over the plurality of shafts and thus can be positioned anywhere between the disc the plurality of pulleys as per the requirement.

[0112] Furthermore, a plurality of oil or greasing points or holes can be provided on the parts wherever required if the need arises.

[0113] Furthermore, the device can be used in a number of machines to get the output as the translational motion like in scroll pumps, for vibrational motion, to create vacuum or any other arrangement not limited to just being specified here and can find application wherever its output can be useful.

[0114] Yet in another objective of the invention is to provide a device equipped with a cantilever eccentric shaft that enhances the performance and reliability of machinery. The device aims to offer improved load balancing, reduced vibration, and easier maintenance, making it suitable for a wide range of industrial applications. The detailed description below outlines the components and their arrangement to achieve these objectives.

[0115] Detailed Description of the above components:Components and Their Functions1. Transmission Casing (101): Encloses and protects the internal components of the transmission system.2. Transmission Disc (102): Works in conjunction with the crankshaft to convert rotary motion into linear motion.3. Spacer (103A & 103B): Maintains the correct distance between components, ensuring proper alignment and operation.4. Crank Bearing Lock Nut (104A & 104B): Secures the crank bearings in place, preventing axial movement.5. Crank Front Bearing (105A & 105B): Supports the crankshaft at the front end, allowing smooth rotation.6. Crank Bearing Hub (106 A & 106B): Houses the crank bearings and connects to the crankshaft.7. Automatic Grease Devices (107A & 107B): Provides continuous lubrication to the bearings, reducing wear and extending the lifespan of the components.8. Crank Back Bearing (108A & 108B): Supports the crankshaft at the rear end, ensuring stability and smooth operation.9. Crank Shaft Seal (109A & 109B): Prevents oil leakage from the crankshaft housing.10. Crank Cover (110A & HOB): Protects the crankshaft and bearings from external contaminants.11. Crank Bush (111A & 11 IB): Provides a bearing surface for the crankshaft, reducing friction and wear.12. Front Cover (112A & 112B): Protects the front end of the crankshaft and associated components.13. Front Seal (113A & 113B): Ensures a tight seal at the front end, preventing leaks.14. Front Bush (114A & 114B): Acts as a bearing surface for the front end of the crankshaft.15. Crank Shaft (115A & 115B): The main shaft that converts rotary motion into linear motion via its eccentric design. Here shaft has meaning as a shaft having an eccentric portion at one end as referenced in the drawings and may be understood as a pair (or more than one) of synchronized crank shafts (115A, 115B), each having an eccentric portion and a concentric portion configured to drive the orbiting disc. The eccentric portion is named as PF in figure 2.16. Transmission Front Bearing (116A & 116B): Supports the transmission system at the front end.17. Load Balancing (117A1 & 117B2): Ensures even distribution of forces, reducing vibration and enhancing stability.18. Load Balancing Key (117A2 & 117B2): Locks the load balancing mechanism in place.19. Load Balancing Clamp (117A3 & 117B3): Secures the load balancing components, ensuring proper function.20. Transmission Top Cover (118): Encloses the top of the transmission system, protecting internal components.21. Transmission Back Bearing (119A & 119B): Supports the transmission system at the rear end.22. Transmission Lock Nut (120A & 120B): Secures the rear bearings in place, preventing axial movement.23. Transmission Back Bush (121A & 121B): Provides a bearing surface for the rear end of the transmission system.24. Transmission Back Cover (122A & 122B): Protects the rear end of the transmission system from contaminants.25. Transmission Back Seal (123A & 123B): Prevents leaks at the rear end of the transmission system.26. Transmission Pulley (124A & 124B): Transmits rotational motion from the motor to the transmission system via belts.27. Synchronization Belt (125): Ensures synchronized operation of the transmission components.28. Drive Belt (126): Transmits power from the motor to the transmission pulley.29. Drive Guard (127): Protects the drive belt and pulleys from external damage and contaminants.30. Reverse Rotation Arrangement (128): Allows for the reversal of rotational direction, providing flexibility in operation.31. Transmission Stand (129A & 129B): Supports the entire transmission assembly, providing stability.32. Base Skid (130): The foundational support for the entire device, ensuring stability and ease of installation.33. Motor (131): Provides the primary driving force for the device, converting electrical energy into mechanical energy.34. Drive Pulley (132): Transfers power from the motor to the drive belt.35. Reverse Rotation Belt (133): Facilitates the reverse rotation mechanism, providing operational flexibility.

[0116] It must be noted that the description of the components provided below is intended for a person skilled in the art and does not limit or define their roles exclusively within the scope of the present invention.

[0117] Operation: The device operates by converting the rotary motion of the motor (131) into linear (translational) motion via the cantilever eccentric crankshafts (115A & 115B). The motor drives the crankshafts through the drive pulley (132) and drive belt (126). This rotary input is further transferred to the transmission system through a synchronization belt (125) or similar mechanism.

[0118] The crankshafts are supported within the transmission casing (101) by a series of bearings, including the crank front bearings (105A & 105B), crank back bearings (108A & 108B), transmission front bearings (116A & 116B), and transmission back bearings (119A & 119B). Continuous lubrication is provided through automatic grease devices (107 A & 107B), ensuring consistent performance and reduced wear.

[0119] Rotary motion from the crankshafts is imparted to the transmission disc (102), which, due to its orbital engagement with the crank bearing hubs (106A & 106B) and guided by recesses in the disc plate (as described in Figures 1 and 3), translates rotary movement into controlled linear motion.

[0120] To ensure dynamic balance and reduced operational vibration, load balancing components (117A1 & 117B2 - weights; 117A2 & 117B2 - keys; 117A3 & 117B3 - clamps) are strategically placed between the transmission disc (102) and pulleys (124A & 124B), counteracting the inertial forces generated by the eccentric shafts.

[0121] Sealing and protective components — including the crankshaft seals (109A & 109B), front seals (113A & 113B), and transmission back seals (123A & 123B) — serve to prevent lubricant leakage and shield internal components from contaminants. Covers such as the crank covers (110A & HOB), front covers (112A & 112B), and transmission back covers (122A & 122B) provide additional protection and structural enclosure.

[0122] The drive guard (127) ensures operator safety by enclosing the moving drive components.

[0123] A key feature of the device is its reverse rotation arrangement (128), supported by the reverse rotation belt (133), enabling the system to operatebidirectionally. This enhances the device’s versatility across various industrial applications requiring forward and reverse motion.

[0124] Refer to Figures 1 to 8, particularly Figure 6 for internal configuration and lubrication layout, and Figures 3 and 7 for assembled views illustrating the motion path and transmission integration.

[0125] Advantages:1. Improved Load Balancing: The use of dedicated load balancing elements (117A1-117B3) reduces dynamic imbalance and vibration during highspeed operation, ensuring smoother performance.2. Reduced Vibration: The cantilever shaft design, precision bearings, and balanced mass distribution minimize vibration and mechanical noise, improving system longevity.3. Ease of Maintenance: The cantilevered layout and modular assembly provide unobstructed access to key components, simplifying inspection, lubrication, and replacement procedures.4. Versatility: With its ability to reverse rotational direction (via 128, 133) and adapt to various drive configurations, the system is suitable for diverse applications such as scroll pumps, vacuum systems, and mechanical actuators.5 Continuous Lubrication: Integrated automatic grease devices (107A & 107B) ensure that bearings are consistently and automatically lubricated, lowering downtime and manual maintenance efforts.

[0126] In yet another objective of the invention, the device is engineered to enhance the performance and reliability of machinery through the incorporation of cantilever eccentric crankshafts (115A & 115B). The device is designed for applications where precise and smooth conversion of rotary motion to linear motion is critical. The cantilever design offers numerous advantages, including space efficiency, ease of maintenance, and improved load handling.

[0127] The device features a transmission system enclosed within a casing (101). The system includes a transmission disc (102) that interacts with the crankshafts (115A & 115B) to facilitate the conversion of motion. The crankshaftsare supported by crank front bearings (105A & 105B) and crank back bearings (108A & 108B), as well as transmission front bearings (116A & 116B) and transmission back bearings (119A & 119B), ensuring stability and smooth operation. Spacers are used to maintain proper alignment and distance between components.

[0128] Automatic grease devices (107 A & 107B) are integrated to provide continuous lubrication to the bearings, reducing wear and prolonging component life. Seals, including crankshaft seals (109A & 109B), front seals (113A & 113B), and transmission back seals (123A & 123B), are strategically placed to prevent lubricant leakage and protect internal components from contaminants. The crankshafts are secured in place with lock nuts, and protective covers such as crank covers (110A & HOB), front covers (112A & 112B), and transmission back covers (122A & 122B) are used to shield the crankshaft and bearings from external elements.

[0129] The device also includes a load balancing mechanism comprising weights (117A1 & 117B1), keys (117A2 & 117B2), and clamps (117A3 & 117B3) to ensure even distribution of forces, minimizing vibration and enhancing stability. This is particularly important for maintaining the longevity and reliability of the machinery.

[0130] A top cover is included to enclose the upper part of the transmission system, providing additional protection. The transmission system also features front and back bushes and seals to ensure smooth operation and prevent leaks.

[0131] Pulleys (124A & 124B) are used to transmit rotational motion from the motor (131) to the transmission system via belts. The synchronization belt (125) ensures that all parts operate in unison, while the drive belt (126) transmits power from the motor. A drive guard (127) is incorporated to protect the moving parts from damage and prevent accidents.

[0132] The device also includes a reverse rotation arrangement (128), supported by the reverse rotation belt (133), allowing for flexible operation in both forward and reverse directions. The entire assembly is supported by a transmission stand, which provides stability and secures the device in place. The base skid ensures thedevice remains stationary during operation. A motor (131) drives the entire system, with power transmitted through a drive pulley (132).

[0133] This device with cantilever eccentric crankshafts is designed for high precision and reliability, featuring components that ensure smooth operation, continuous lubrication, and effective load balancing. The design facilitates easy maintenance and flexible operation, making it suitable for a wide range of industrial applications.

[0134] In yet another objective of the invention, the device features innovative cantilever eccentric crankshafts (115A & 115B) designed to enhance performance and reliability in various industrial applications. The eccentric shafts, integrated with a sophisticated transmission system (101, 102), enable the efficient conversion of rotary motion into linear motion — or vice versa — while maintaining optimal dynamic balance and reducing vibrations. The following description provides an overview of the device's structural configuration and operational capabilities.

[0135] Structural Overview: The device comprises a robust transmission system (101) housed within a protective casing, designed to facilitate the precise conversion of rotary motion into linear motion. At the core of the system are cantilever eccentric crankshafts (115A & 115B), which are supported by a series of bearings, including crank front bearings (105A & 105B), crank back bearings (108A & 108B), transmission front bearings (116A & 116B), and transmission back bearings (119A & 119B). These components are precisely aligned and secured in position using spacers and lock nuts, ensuring stable and smooth rotational motion. To ensure long-term performance and minimize maintenance, the system integrates automatic grease devices (107A & 107B) that deliver continuous lubrication to the bearings, significantly reducing wear and extending the service life of the components.

[0136] Operational Mechanism: The device operates by transmitting power from a motor (131) to the cantilever eccentric crankshafts (115A & 115B) via a drive pulley (132) and drive belt (126). The unique eccentric design of the crankshafts converts the rotary motion of the motor into controlled linear oroscillatory motion, which is further transmitted through a series of balanced and precisely aligned components. These include the transmission disc (102), bearing hubs (106A & 106B), and associated transmission elements. The system’s performance is optimized by a strategically integrated load balancing mechanism (117A1-117B3), which evenly distributes dynamic forces, reducing vibration and enhancing operational stability.

[0137] Key Features and Benefits:• Enhanced Load Balancing: The dedicated load balancing components weights, keys, and clamps (117A1-117B3), minimize dynamic imbalances and vibrations, ensuring smoother operation and extending the overall lifespan of the device.• Continuous Lubrication: Automatic grease devices (107A & 107B) supply continuous lubrication to all critical bearing interfaces, significantly reducing wear and eliminating the need for frequent manual maintenance.• Ease of Maintenance: The cantilevered shaft configuration allows unobstructed access to key mechanical elements, simplifying inspection, lubrication, and part replacement, and thus reducing downtime.• Versatility: The inclusion of a reverse rotation arrangement (128) and reverse rotation belt (133) enables bidirectional operation, making the device adaptable for various industrial applications including vacuum pumps, scroll compressors, and mechanical actuators.• Protection and Durability: A comprehensive sealing system — comprising crankshaft seals (109A & 109B), front seals (113A & 113B), and transmission back seals (123 A & 123B) — prevents lubricant leakage and blocks the ingress of contaminants. Combined with protective covers (110A-112B, 122A & 122B) and a drive guard (127), these features ensure reliable operation even in harsh environments.• Assembly and Configuration: The entire assembly is mounted on a base skid, which provides structural support and minimizes operational vibration. The transmission system (101) and associated drive components are enclosed in protective covers and guards, enhancing both safety anddurability by shielding users from moving parts and protecting internal mechanisms from damage. Power transmission is managed by synchronization belts (125) and drive belts (126), ensuring precise timing and efficient energy transfer. The reverse rotation system (128, 133) provides additional operational flexibility.This innovative device, featuring cantilever eccentric crankshafts, marks a significant advancement in mechanical motion conversion. Its combination of high precision, continuous lubrication, dynamic load balancing, and modular accessibility ensures superior performance with reduced maintenance demands. Designed for reliability and versatility, the system is well-suited for a wide range of industrial applications that require efficient and stable conversion of rotary motion to linear or oscillatory movement.

[0138] In yet another objective of the invention, a device featuring a cantilever eccentric shaft arrangement is provided for converting rotational motion into translational motion. The device comprises:• A transmission casing (101) enclosing the mechanical components;• A plurality of synchronized cantilever eccentric crankshafts (115A, 115B), each having an eccentric portion and a concentric portion;• A plurality of crank bearing hubs (106A, 106B);• A plurality of bearings, including crank front bearings (105A, 105B) and crank back bearings (108A, 108B);• A plurality of flywheels or pulleys (124 A, 124B) for rotational input and output;• A plurality of balancing weights (117A1, 117B1) strategically mounted on the shaft for dynamic balancing;• A transmission disc or orbiting disc (102) with a plurality of recesses on its rear surface corresponding to the center distances of the crank bearing hubs;• A synchronization arrangement including but not limited to a synchronization belt (125), drive belt (126), timing chain, gears, or a synchronized motor.Each cantilever eccentric shaft is configured such that:• An oil seal bush is mounted on the eccentric portion of the shaft;• A first bearing is positioned such that its inner race is supported by the oil seal bush, and its outer race rests against a shoulder step of the crank bearing hub;• A second bearing is also mounted on the shaft, with its outer race resting on another step of the crank bearing hub;• A locking nut is threaded from the outer end of the cantilever shaft to secure the bearing assembly in position.The disc (102), having multiple recesses spaced according to the crank hub layout, is engaged with the guides of the crank bearing hubs, allowing the disc to orbit and facilitate the conversion of motion.Additional support bearings are mounted along the shaft such that:• A first bearing aligns concentrically with a first hole in the transmission casing, providing axial and radial support;• A second bearing is mounted at a distance along the shaft, aligning with a second hole in the casing, and is likewise secured with a locking nut.Balancing weights (117A1-117B1) may be mounted at selected positions on the shaft to reduce vibrational forces during operation. A flywheel or pulley (124 A, 124B) is mounted on each shaft to transmit or receive rotary motion, and the synchronization arrangement ensures coordinated movement between multiple crankshafts.The first and second bearings used within the crank bearing hubs may be of the same or different sizes, and may include any suitable bearing type such as ball bearings, roller bearings, spherical roller bearings, needle bearings, tapered roller bearings, or bushings, depending on application requirements.The transmission disc or disc plate (102) is particularly suited for, but not limited to, integration into systems such as scroll compressors, scroll vacuum pumps, agitating flow reactors, centrifuges, fluid pumps, or any other device that benefits from controlled translational motion derived from rotary input.

[0139] The corresponding structures, materials, acts, and equivalents of all means or step plus function elements in the claims below are intended to include any structure, material, or act for performing the function in combination with other claimed elements as specifically claimed. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprising", “including” and / or "having" and other conjugations of these terms, when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0140] The terminology used herein should not be understood as limiting, unless otherwise specified, and is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosed subject matter. While certain embodiments of the disclosed subject matter have been illustrated and described, it will be clear that the disclosure is not limited to the embodiments described herein. Numerous modifications, changes, variations, substitutions and equivalents are not precluded.

[0141] The above description does not provide specific details of the manufacture or design of the various components. Those of skill in the art are familiar with such details, and unless departures from those techniques are set out, techniques, known, related art or later developed designs and materials should be employed. Those in the art are capable of choosing suitable manufacturing and design details.

[0142] Further, the terminology used herein is for describing particular embodiments only and is not intended to be limiting of the disclosure. It will be appreciated that several of the above-disclosed and other features and functions, or alternatives thereof, may be combined into other systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may subsequently be made by those skilled inthe art without departing from the scope of the present disclosure as encompassed by the following claims.

[0143] The claims, as originally presented and as they may be amended, encompass variations, alternatives, modifications, improvements, equivalents, and substantial equivalents of the embodiments and teachings disclosed herein, including those that are presently unforeseen or unappreciated, and that, for example, may arise from applicants / patentees and others.

[0144] It will be appreciated that variants of the above-disclosed and other features and functions, or alternatives thereof, may be combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may be subsequently made by those skilled in the art, which are also intended to be encompassed by the following claims.

Claims

I Claim:1: A device for converting rotational motion into translational motion, comprising: i. a transmission casing (101); ii. a plurality crankshaft (115A & 115B) having eccentric portion (PF), wherein the eccentric portion starts at point P and continues to point F, wherein crankshaft are synchronized; iii. a crank bearing hub (106 A & 106B); iv. a transmission disc (102) operably connected to the crankshaft; v. a plurality of bearings, including crank front bearings (105A & 105B) and crank back bearings (108A & 108B); vi. a load balancing arrangement comprising balancing weights (117A1, 117B2), load balancing key (117A2 & 117B2), and load balancing clamp (117A3 & 117B3); vii. a synchronization arrangement including a drive pulley (132), drive belt (126), and synchronization belt (125); viii. a motor (131); ix. a reverse rotation arrangement (128); x. a transmission top cover (118), transmission back cover (122A & 122B), and transmission back seal (123A & 123B); xi. a crank shaft seal (109A & 109B), crank cover (110A & HOB), and crank bush (l l lA & 11 IB); xii. a front cover (112A & 112B), front seal (113A & 113B), and front bush (114A & 114B); xiii. a transmission pulley (124A & 124B); xiv. a drive guard (127); xv. a transmission stand (129A & 129B); xvi. a base skid (130); xvii. an automatic grease device (107A & 107B); and xviii. a plurality of spacers (103 A & 103B).Wherein the eccentric portion of the crankshaft (115A) PF is connected with the bearing 108 A where inner race of bearing is resting at point E and on the top of the outer race of the bearing is operably connected with crank bearing hub, crank bearing hub is operably connected with bearing 105A, further crank bearing hub is operably connected with the orbiting disc (102) to convert rotational motion into translational motion.2: The device as claimed in claim 1, wherein the crankshaft (115A & 115B) comprises an eccentric portion (PF) having an oil seal bush (111A & 11 IB) mounted on the portion (EF), a first bearing (105 A) mounted on the shaft at point E, wherein the inner race of the first bearing is supported by the oil seal bush and the outer race operably rests on the crank bearing hub (106A), and a second bearing (105B) mounted further along the shaft with its outer race resting on the crank bearing hub, and wherein a crank bearing lock nut (104 A) is tightened from the side of point A.3: The device as claimed in claim 1, wherein a plurality of bearings are mounted onto the crankshaft (115A) from the side of point (G), including a first bearing (116A) positioned at point G and supported by the transmission casing (101), and a second bearing (119A) mounted near point K, both bearings being supported by the transmission casing and a transmission lock nut (120B) tightened from the side of point L.4: The device as claimed in claim 1, wherein the load balancing arrangement (117A1, 117B2, 117A2, 117B2, 117A3, 117B3) is configured to ensure an even distribution of forces across the crankshafts (115A & 115B), thereby reducing vibration and enhancing stability during operation.5: The device as claimed in claim 1, wherein a flywheel or transmission pulley (124A & 124B) is mounted onto the crankshaft between RM at the end R and synchronized via synchronized belt 125, and is driven via the drive belt (126) connected to the motor (131) and the drive pulley (132), transmitting torque to the crankshaft.6: The device as claimed in claim 1, wherein a synchronization arrangement is provided for synchronizing the rotational motion of the crankshaft(s) (115A & 115B) with other components, using a synchronization belt (125), a reverse rotation belt (133), and / or gears or chain drives to ensure phase-matched eccentric rotation for consistent translational motion.7: The device as claimed in claim 1, wherein the bearings within the crank bearing hub (106A & 106B) are selected from the group consisting of ball bearings, roller bearings, spherical roller bearings, needle bearings, taper roller bearings, or bush bearings, and wherein the bearings may be of the same or different sizes.8: The device as claimed in claim 1, wherein the transmission disc (102) is configured for use in applications selected from the group consisting of a scroll compressor, a scroll vacuum pump, an agitating flow reactor, a centrifuge, or a fluid pump, wherein translational motion is employed to compress, agitate, or transport a working medium.9: The device as claimed in claim 1, further comprising a drive guard (127) configured to shield the drive belt (126), transmission pulley (124A & 124B), and synchronization components from environmental contaminants and accidental contact with moving parts.10: The device as claimed in claim 1, wherein the automatic grease devices (107A & 107B) are positioned to provide continuous lubrication to the bearings (105A, 105B, 108 A, 108B), reducing friction, preventing wear, and extending the operational life of the transmission assembly.

Images