Shaft centering horizontal adjusting device

Abstract

The utility model provides a shaft centering horizontal adjusting device which comprises a base provided with an installation cavity and a sliding way, and the sliding way is arranged on the upper portion of the installation cavity and distributed in the horizontal direction; the upper end cover is arranged on the slide way in a sliding mode and fixedly connected with the motor elastic supporting piece; the transmission system comprises a worm, a worm gear in transmission connection with the worm and a linear conversion assembly in transmission connection with the worm gear, at least one end of the worm extends out of the mounting cavity, a rotating shaft of the worm gear is rotationally connected with the bottom face of the mounting cavity, and the linear conversion assembly is connected with the upper end cover and used for converting rotating motion of the worm gear into linear motion so that the upper end cover can slide along the sliding way. The motor level difference can be efficiently and conveniently adjusted.

Description

Technical Field

[0001] This application relates to the field of wind power technology, and more specifically, to a shaft alignment leveling device. Background Technology

[0002] In wind turbine towing tests, two motors are typically connected via a coupling. The motor under test is the driven side, and the other motor is the prime mover. This is used to conduct related towing and other tests.

[0003] Currently, shaft alignment tests typically require professionals to use a shaft alignment instrument to measure deviation data. Elastic supports are then used to adjust the height difference during alignment, and jacks are used to move the motor base to adjust the motor's horizontal level. Multiple adjustments are needed to achieve successful shaft alignment during jack movement, and securing the jacks is complex, requiring significant manpower and resources. This makes adjusting the horizontal level difficult, and the jacks' instability poses safety hazards. Utility Model Content

[0004] This application provides a shaft alignment level adjustment device, which can achieve efficient and convenient adjustment of motor level difference and reduce the occurrence of safety hazards.

[0005] This application provides a shaft alignment leveling device, comprising:

[0006] The base has a mounting cavity and a slide rail, the slide rail being located on the upper part of the mounting cavity and distributed in a horizontal direction;

[0007] The upper end cover is slidably disposed in the slide rail, and the upper end cover is fixedly connected to the motor elastic support member;

[0008] The transmission system includes a worm, a worm wheel connected to the worm, and a linear conversion assembly connected to the worm wheel. At least one end of the worm extends out of the mounting cavity. The shaft of the worm wheel is rotatably connected to the bottom surface of the mounting cavity. The linear conversion assembly is connected to the upper end cover and is used to convert the rotational motion of the worm wheel into linear motion so that the upper end cover slides along the slide rail.

[0009] In some embodiments, the linear conversion assembly includes a gear and a rack, the gear being coaxially connected to the worm gear and disposed above the worm gear, the rack being fixed to the bottom surface of the upper end cover facing the mounting cavity, and the rack being drively connected to the gear.

[0010] In some embodiments, the linear conversion assembly includes a drive belt, a gear, and a rack. The drive belt connects the worm gear and the gear, the gear is rotatably connected to the mounting cavity, and the rack is fixed to the bottom surface of the upper end cover facing the mounting cavity, with the rack being drive-connected to the gear. Alternatively, the linear conversion assembly includes a drive chain, a gear, and a rack. The drive chain connects the worm gear and the gear, the gear is rotatably connected to the mounting cavity, and the rack is fixed to the bottom surface of the upper end cover facing the mounting cavity, with the rack being drive-connected to the gear.

[0011] In some embodiments, the linear conversion assembly includes a lead screw nut and a rack, the output shaft of the worm gear is connected to the lead screw nut, and the lead screw nut is connected to the upper end cover; or, the linear conversion assembly includes a crank slider, the worm gear is connected to the crank slider, the crank slider is fixed to the bottom surface of the upper end cover facing the mounting cavity, and the crank slider is drivenly connected to the rack.

[0012] In some embodiments, the base has a rolling element mounting groove, the rolling element mounting groove is connected to the slide rail, and the rolling element mounting groove is distributed along the horizontal direction, and a plurality of rolling elements are disposed in the rolling element mounting groove.

[0013] In some embodiments, the extended end of the worm gear is connected to a handle.

[0014] In some embodiments, the friction angle of the worm is smaller than the helix angle of the worm.

[0015] In some embodiments, the two ends of the worm gear extend out of the mounting cavity along the horizontal direction, and the two ends of the worm gear are connected to handles.

[0016] In some embodiments, the diameter of the worm gear is larger than the diameter of the gear.

[0017] In this embodiment, a small force is applied to the worm gear to drive its rotation. Through the transmission between the worm gear and the worm wheel, and between the worm wheel and the linear conversion component, the driving force is amplified. This results in the upper cover moving slowly when the worm gear rotates significantly. With minimal manpower (even just one person), the horizontal direction of the motor can be adjusted, achieving shaft alignment for leveling. Furthermore, based on the self-locking performance of the worm gear and worm wheel, the force of this adjustment mechanism can only be transmitted in one direction. No displacement occurs when force is applied in the opposite direction; that is, vibrations during motor operation cannot be transmitted to the worm gear, preventing its base from moving. This achieves a unidirectional force transmission effect, realizing self-locking and improving safety performance. The shaft alignment leveling device of this application is applicable to drag tests of various types of motors on the market, requiring no changes to the motor structure, and has a wide range of applications and low testing costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the shaft alignment leveling device provided in some embodiments of this application;

[0020] Figure 2 An exploded view of a shaft alignment leveling device provided in some embodiments of this application.

[0021] The attached figures are labeled as follows:

[0022] 1-Base; 2-Top cover; 3-Transmission system;

[0023] 11-Mounting cavity; 12-Slide rail; 13-Rolling element; 31-Worm; 32-Worm wheel; 33-Gear; 34-Rack. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0026] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0029] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0030] In this application, "multiple" means two or more (including two).

[0031] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the shaft alignment leveling device provided in some embodiments of this application; Figure 2 An exploded view of a shaft alignment leveling device provided in some embodiments of this application.

[0032] This application provides a shaft alignment leveling device, comprising: a base 1, an upper cover 2, and a transmission system 3. The base 1 has a mounting cavity 11 and a slide rail 12, the base 1 enclosing the mounting cavity 11. The slide rail 12 is located on the upper part of the mounting cavity 11 and is distributed horizontally. The upper cover 2 is slidably disposed within the slide rail 12. The upper cover 2 is fixedly connected to a motor elastic support member, which is used to adjust the height of the motor. When the upper cover 2 moves along the slide rail 12, it can drive the motor elastic support member and the test motor fixedly connected to the motor elastic support member to move horizontally, thereby adjusting the horizontal position of the test motor.

[0033] The transmission system 3 includes a worm 31, a worm wheel 32, and a linear conversion assembly. The worm 31 is mounted on the base 1 and can rotate relative to the base 1. The worm wheel 32 is drive-connected to the worm 31, and the linear conversion assembly is drive-connected to the worm wheel 32. At least one end of the worm 31 extends from the mounting cavity 11 of the base 1 to facilitate manual rotation or external drive mechanism operation. The shaft of the worm wheel 32 is located on the bottom surface of the mounting cavity 11 and can rotate relative to the mounting cavity 11. The upper end cover 2 is connected to the linear conversion assembly; the two can be directly connected or indirectly connected via a connector. The linear conversion assembly converts the rotational motion of the worm wheel 32 into linear motion, allowing the upper end cover 2 to slide along the slide rail 12 of the base 1, thereby adjusting the horizontal position of the motor.

[0034] The base 1 can be a box structure, a block shape, or a plate shape. The upper cover 2, after mating with the base 1, covers the upper part of the mounting cavity 11 and can accommodate the transmission system 3. The upper cover 2 can be a plate shape, a block shape, or a box structure. The linear conversion assembly can be integrally formed with the upper cover 2, or it can be fastened together with connectors.

[0035] Optionally, the two ends of the upper cover 2 along the horizontal direction are sliding ends, and the two sliding ends are respectively slidably engaged with the slide rail 12. Alternatively, a sliding member can be added to each side of the upper cover 2, and the upper cover 2 can slide along the slide rail 12 by using the sliding member to cooperate with the slide rail 12.

[0036] In use, this device is fixedly installed below the elastic support of the motor. The upper cover 2 is embedded in the slide rail 12 of the base 1. The base 1 restricts the movement direction of the upper cover 2, allowing it to move only horizontally. After engaging with the base 1, the upper cover 2 covers the upper part of the mounting cavity 11. The engagement of the upper cover 2 and the base 1 accommodates the transmission system 3 and restricts the movement direction of the transmission gear 33, allowing it to rotate only. The worm 31 and worm wheel 32 are embedded in the mounting cavity 11 of the base 1. The worm 31 and worm wheel 32 mesh with each other for transmission. At the same time, the worm wheel 32 is connected to the linear conversion assembly for transmission. The linear conversion assembly is fixedly connected to the upper cover 2.

[0037] During the alignment of the motor shafts, the height difference of the motors is adjusted using elastic support members, and the horizontal adjustment device of this application is used to adjust the horizontal difference of the motors. When the worm 31 rotates, it drives the worm wheel 32 to rotate. The linear conversion component rotates with the worm wheel 32 and converts the rotational motion into linear motion, driving the upper end cover 2 to move horizontally, thereby adjusting the horizontal position of the motor.

[0038] This application achieves speed increase, force increase, or movement direction control of the upper cover 2 through multi-stage transmission, ultimately outputting linear motion to adjust the horizontal orientation of the shaft. Furthermore, based on the reverse self-locking property of the worm gear 32 and worm 31 transmission, when the motor vibration generates a horizontal component force, this force is transmitted to the transmission gear 33 and worm 31, preventing it from affecting the rotation of the worm 31 and transmission gear 33, thus achieving a self-locking effect.

[0039] It should be noted that the horizontal direction in this application mainly refers to Figure 1 The lateral direction of movement, that is Figure 1 The direction of movement is from left to right.

[0040] Regarding the structure of the linear conversion assembly, in a first specific embodiment, the linear conversion assembly includes a transmission belt, a gear 33, and a rack 34. The transmission belt connects the worm gear 32 and the gear 33. The gear 33 is rotatably connected to the mounting cavity 11. The rack 34 is fixed to the bottom surface of the upper end cover 2 facing the mounting cavity 11. The rack 34 is drively connected to the gear 33. The diameter of the gear 33 is larger than the diameter of the worm gear 32, and the rack 34 is fixed to the bottom surface of the upper end cover 2. When the worm 31 drives the worm gear 32, the worm gear 32 transmits power to the large-diameter gear 33 on another shaft through a synchronous belt, which then drives the rack 34 and moves the upper end cover 2. The operation is smooth and the noise is low. In addition, the linear conversion assembly can also be a transmission chain, a gear 33, and a rack 34, with the worm gear 32 and the gear 33 connected by the transmission chain. This provides better load-bearing capacity, higher synchronization accuracy, and easier maintenance.

[0041] In the second specific embodiment, the linear conversion assembly includes a gear 33 and a rack 34. The gear 33 is coaxially connected to the worm gear 32 and is positioned above the worm gear 32. The rack 34 is fixed to the bottom surface of the upper end cover 2 facing the mounting cavity 11. The rack 34 is drive-connected to the gear 33. The diameter of the worm gear 32 is larger than the diameter of the gear 33. The worm 31 meshes with the worm gear 32 of the transmission gear 33. The rack 34 at the bottom of the upper end cover 2 meshes with the small-diameter gear 33 of the transmission gear. The worm 31 drives the large-diameter worm gear 32 to provide a high acceleration ratio. The large-diameter worm gear 32 coaxially drives the small-diameter gear 33 to rotate. The meshing of the small-diameter gear 33 with the rack 34 further increases the transmission ratio, further adjusting the speed to ensure smooth movement of the upper end cover 2. The coaxial distribution of the gear 33 and the worm gear 32 results in a more compact structure, reducing the overall size of the adjustment device.

[0042] In the third specific embodiment, the linear conversion assembly includes a lead screw nut and a rack 34. The output shaft of the worm gear 32 is connected to the lead screw in the lead screw nut, and the nut in the lead screw nut is connected to the upper end cover 2. In this way, the output shaft of the worm gear 32 is directly connected to the lead screw, and the rotation of the lead screw drives the nut to move axially, thereby converting the rotational motion into linear motion, which in turn drives the upper end cover 2 to move horizontally. Compared with the gear 33 transmission structure, the overall size of the adjustment device can be further reduced.

[0043] In the fourth specific embodiment, the linear conversion component includes a crank slider, a worm gear 32 connected to the crank slider, the crank slider fixedly connected to the upper end cover 2 and facing the bottom surface of the mounting cavity 11, and the crank slider being connected to the rack 34 for transmission, converting rotational motion into linear motion.

[0044] A rolling element 13 is provided between the upper cover 2 and the base 1. There can be one or more rolling elements 13, which can be set in the mounting groove between the base 1 and the upper cover 2. Specifically, there can be two rows of rolling elements 13, respectively set at both ends of the upper cover 2 and between the upper cover 2 and the slide rail 12. There can be multiple rolling elements 13 in each mounting groove. The rolling elements 13 can reduce the friction when the upper cover 2 moves, so that the moving resistance of the upper cover 2 is smaller and the movement is smoother.

[0045] To ensure self-locking, the worm gear 31 must meet a certain lead angle. Specifically, when the friction coefficient between worm wheels 32 is 0.6, the lead angle of the worm gear 31 needs to be less than 3°29′11″ to achieve self-locking. When the friction coefficient is 0.7, the lead angle needs to be less than 4°03′57″ to achieve self-locking. Similarly, if the lead angle exceeds this value, the reducer will not have a self-locking function. When the friction coefficient is 0.8, the lead angle needs to be less than 4°38′39″ to achieve self-locking.

[0046] Optionally, the friction angle of the worm 31 is smaller than its helix angle. This allows the worm 31 to rotate with a smaller force applied to its driving end, thus amplifying the force and achieving unidirectional force transmission. This results in the upper cover 2 moving slowly and smoothly when the worm 31 rotates significantly, while also facilitating fine-tuning of shaft alignment. Furthermore, due to the self-locking property of the worm wheel 32 and worm 31, the force generated by motor vibration cannot drive the worm wheel 32 and worm 31 to move, thereby achieving self-locking.

[0047] To facilitate manual operation of the worm gear 31, a handle can be connected to its extended end for easy gripping. The two ends of the worm gear 31 extend horizontally from the mounting cavity 11, and handles are connected to both ends of the worm gear 31. The handles can be driven from either the front or rear sides of the base 1, making operation more convenient. Alternatively, a drive device can be connected to the handle, allowing the worm gear 31 to be automatically driven by setting a predetermined speed.

[0048] Furthermore, an anti-slip structure can be added to the handle, such as anti-slip texture or anti-slip sleeve. The anti-slip structure can increase the friction between the handle and the hand, prevent slippage, and make the grip more secure when turning the handle.

[0049] The shaft alignment level adjustment device provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A shaft alignment leveling adjustment device, characterized in that, include: The base (1) is provided with a mounting cavity (11) and a slide (12), wherein the slide (12) is located on the upper part of the mounting cavity (11) and is distributed in the horizontal direction; The upper end cover (2) is slidably disposed on the slide rail (12), and the upper end cover (2) is fixedly connected to the motor elastic support; The transmission system (3) includes a worm (31), a worm wheel (32) that is connected to the worm (31) and a linear conversion assembly that is connected to the worm wheel (32). At least one end of the worm (31) extends out of the mounting cavity (11). The shaft of the worm wheel (32) is rotatably connected to the bottom surface of the mounting cavity (11). The linear conversion assembly is connected to the upper end cover (2) and is used to convert the rotational motion of the worm wheel (32) into linear motion so that the upper end cover (2) slides along the slide rail (12).

2. The shaft alignment leveling device according to claim 1, characterized in that, The linear conversion assembly includes a gear (33) and a rack (34). The gear (33) is coaxially connected to the worm gear (32) and is located above the worm gear (32). The rack (34) is fixed to the bottom surface of the upper end cover (2) facing the mounting cavity (11). The rack (34) is connected to the gear (33) in a transmission connection.

3. The shaft alignment leveling device according to claim 1, characterized in that, The linear conversion assembly includes a drive belt, a gear (33), and a rack (34). The drive belt connects the worm gear (32) and the gear (33). The gear (33) is rotatably connected to the mounting cavity (11). The rack (34) is fixed to the bottom surface of the upper end cover (2) facing the mounting cavity (11). The rack (34) is drively connected to the gear (33); or, The linear conversion assembly includes a transmission chain, a gear (33) and a rack (34). The transmission chain connects the worm gear (32) and the gear (33). The gear (33) is rotatably connected to the mounting cavity (11). The rack (34) is fixed to the bottom surface of the upper end cover (2) facing the mounting cavity (11). The rack (34) is connected to the gear (33) in a transmission connection.

4. The shaft alignment leveling device according to claim 1, characterized in that, The linear conversion assembly includes a lead screw nut and a rack (34), the output shaft of the worm gear (32) is connected to the lead screw nut, and the lead screw nut is connected to the upper end cover (2); or... The linear conversion assembly includes a crank slider, the worm gear (32) is connected to the crank slider, the crank slider is fixed to the bottom surface of the upper end cover (2) facing the mounting cavity (11), and the crank slider is connected to the rack (34) in a transmission connection.

5. The shaft alignment leveling device according to any one of claims 1 to 4, characterized in that, The base (1) has a rolling element mounting groove, which is connected to the slide rail (12) and is distributed along the horizontal direction. Multiple rolling elements (13) are provided in the rolling element mounting groove.

6. The shaft alignment leveling device according to claim 1, characterized in that, The extended end of the worm (31) is connected to the handle.

7. The shaft alignment leveling device according to claim 1, characterized in that, The friction angle of the worm (31) is smaller than the helix angle of the worm (31).

8. The shaft alignment leveling device according to claim 1, characterized in that, The two ends of the worm (31) along the horizontal direction extend out of the mounting cavity (11), and the two ends of the worm (31) are connected to handles.

9. The shaft alignment leveling device according to claim 2, characterized in that, The diameter of the worm gear (32) is larger than the diameter of the gear (33).

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