Reducer turning auxiliary device
By designing a reducer disc brake assist device with direct drive spindle and polygonal hole position, combined with an electric wrench and a ratchet wrench, the problem of time-consuming and labor-intensive and large space occupancy of traditional devices is solved, and efficient and stable disc brake operation is achieved.
Patent Information
- Application Number
- CN202422285641.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The traditional shaking handlebar auxiliary device is time-consuming and labor-intensive when used in the pitch and yaw systems of wind turbine units, and it occupies a large space, making it difficult to achieve 360° rotation, which easily causes equipment damage.
A reducer disc auxiliary device is designed, using a direct drive spindle and polygonal hole position, combined with an electric wrench and a ratchet wrench to reduce space requirements, improve operating efficiency, and enhance stability through sheath.
It realizes time-saving and labor-saving and small space in the pitch and yaw systems, reduces the risk of equipment damage, and improves work efficiency and operation convenience.
Smart Images
Figure CN223177681U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of wind power generation, and particularly relates to an auxiliary device for turning the reducer by hand. Background Art
[0002] In the current mainstream wind turbine generator systems, both the yaw system and the pitch system use reducers for power transmission. The reducer mainly plays the role of changing the rotational speed and torque.
[0003] When a motor damage or motor brake damage fault occurs in the pitch system, it often leads to the situation of the blade running away. To ensure the safety of the wind turbine, it is necessary to manually turn the pitch back; when a fault occurs in the yaw system, it is necessary to check the yaw reducer, and usually, the manual turning method is also used.
[0004] In the traditional manual turning method, the most commonly used auxiliary device is the crank-type turning auxiliary device. The structure of this auxiliary device is similar to the crank of an old tractor. However, the speed ratio of the reducer in the pitch system is often above one hundred. When workers turn the reducer by using the traditional crank-type turning auxiliary device, it is time-consuming and laborious; in the yaw system, in order to capture wind energy to the maximum extent, the current yaw system of the wind turbine is relatively heavy and occupies a large space. The space inside for workers to turn the crank-type turning auxiliary device is limited, which makes it difficult for workers to turn the crank-type turning auxiliary device a full 360° at one time, but they need to frequently change hands, and the operation process is also inconvenient. Content of the Utility Model
[0005] This application provides an auxiliary device for turning the reducer by hand, which can effectively solve the problems existing in the existing crank-type turning auxiliary device during use.
[0006] The above object of this application is achieved through the following technical solutions:
[0007] An auxiliary device for turning the reducer by hand includes a direct drive main shaft. One end of the direct drive main shaft is fixedly connected with a first end tube, and the other end of the direct drive main shaft is fixedly connected with a second end tube. The first end tube, the direct drive main shaft, and the second end tube are coaxially arranged;
[0008] A through hole is provided at the central position of the first end tube along its axial direction. The diameter of the through hole is equal to the diameter of the output shaft on the motor side of the reducer. A keyway is provided on one side of the through hole along its axial direction, and the shape of the keyway corresponds to the key shape on the output shaft on the motor side of the reducer;
[0009] A polygonal hole position is provided at the central position of the second end tube along its axial direction. The output end of a ratchet wrench or an electric wrench can drive the direct drive main shaft to rotate through the polygonal hole position of the second end tube;
[0010] A sheath is installed at a position on the direct drive spindle near the first end tube on the side where the second end tube is located.
[0011] Furthermore, the sheath includes a rotating support portion and an anti-slip gripping portion, and the anti-slip gripping portion is rotatably connected to the direct drive spindle through the rotating support portion.
[0012] Furthermore, the rotating support portion includes two bearings. The inner rings of both bearings are sleeved on the outer side of the direct drive spindle, and the inner rings of both bearings are fixed to the outer side wall of the direct drive spindle by welding;
[0013] The two bearings are spaced along the axial direction of the direct drive spindle. An inner support tube and an outer support tube are provided at the space between the two bearings. The two ends of the inner support tube are respectively fixedly connected to the mutually adjacent ends of the inner rings of the two bearings, and the outer support tube is coaxially sleeved on the outer side of the inner support tube and its two ends are respectively fixedly connected to the mutually adjacent ends of the outer rings of the two bearings.
[0014] Furthermore, the anti-slip gripping portion includes a rubber sleeve handle. The rubber sleeve handle is sleeved on the outer sides of the outer rings of the two bearings and the outer support tube between them. A plurality of anti-slip textures are uniformly arranged on the surface of the rubber sleeve handle along the circumferential direction, and the anti-slip textures are all arranged along the axial direction of the rubber sleeve handle.
[0015] Furthermore, the outer side wall of the rubber sleeve handle is wavy along its axial direction.
[0016] Furthermore, a retaining ring is welded to the mutually remote ends of the outer rings of the two bearings. The inner diameter of the retaining ring is equal to the inner diameter of the bearing outer ring, and the outer diameter of the retaining ring is greater than the outer diameter of the bearing outer ring.
[0017] Furthermore, the polygonal hole position on the second end tube is a 1 / 2 square drive hole.
[0018] In summary, the present application includes at least one of the following beneficial technical effects:
[0019] The through hole on the first end head tube at one end of the direct drive main shaft of the present application is designed with reference to the shape and size of the output shaft on the side of the reducer motor shaft. After the through hole of the first end head tube is matched with the output shaft on the side of the reducer motor, the barring effect on the reducer can be achieved by rotating the direct drive main shaft. The polygonal hole position provided at the other end of the direct drive main shaft of the present application is a socket that can be matched with the output end of a ratchet wrench or an electric wrench. When it is necessary to inspect the reducer in the pitch system, an electric wrench can be used. The output end of the electric wrench is matched with the polygonal hole position at the center of the second end head tube. For a reducer with a speed ratio of more than 100 in the pitch system, the electric wrench is significantly more time-saving and labor-saving than the traditional crank-type manual barring auxiliary device when in use. When barring the reducer in the yaw system, since the yaw motor rotates too fast, using the yaw motor for detection is likely to cause equipment damage. This requires the staff to manually inspect the yaw reducer. At this time, in addition to using an electric wrench, the worker can also use the output end of a ratchet wrench to cooperate with the polygonal hole position at the center of the second end head tube and turn the ratchet wrench to achieve the inspection of the yaw reducer. Compared with the traditional crank-type manual barring auxiliary device, the ratchet wrench requires less space when in use and does not need to change hands frequently, and is convenient and fast to operate. The sheath provided on the direct drive main shaft facilitates the worker to hold the direct drive main shaft by hand when it rotates, making it rotate more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0021] Figure 1 is the overall structural schematic diagram of the present application;
[0022] Figure 2 is the structural schematic diagram after removing the rubber sleeve from the bearing and the outer support tube;
[0023] Figure 3 is in Figure 2 is the structural schematic diagram after further removing the outer support tube and the inner support tube on the basis of
[0024] Figure 4 is the state schematic diagram after assembling the output end of the electric wrench and the 1 / 2 square drive hole on the second end head tube of the present application;
[0025] Figure 5 is the state schematic diagram after assembling the output end of the ratchet wrench and the 1 / 2 square drive hole on the second end head tube of the present application.
[0026] Reference numerals: 1, direct drive main shaft; 2, first end tube; 3, second end tube; 4, through hole; 5, keyway; 6, sheath; 61, rotating support portion; 611, bearing; 612, inner support tube; 613, outer support tube; 62, anti-slip gripping portion; 621, rubber sleeve grip; 622, anti-slip texture; 7, retaining ring; 8, 1 / 2 square drive hole; 9, electric wrench; 10, ratchet wrench. Detailed implementation manners
[0027] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts also belong to the scope of protection of the present application.
[0028] As Figures 1 - 5 shown, a speed reducer turning auxiliary device disclosed in the present application includes a direct drive main shaft 1. One end of the direct drive main shaft 1 is fixedly connected to a first end tube 2, and the other end of the direct drive main shaft 1 is fixedly connected to a second end tube 3, and the first end tube 2, the direct drive main shaft 1 and the second end tube 3 are coaxially arranged. A through hole 4 is provided at the central position of the first end tube 2 along its axial direction, and the diameter of the through hole 4 is equal to the diameter of the output shaft on the motor side of the speed reducer. A keyway 5 is provided on one side of the through hole 4 along its axial direction, and the shape of the keyway 5 corresponds to the shape of the key on the output shaft on the motor side of the speed reducer. A polygonal hole position is provided at the central position of the second end tube 3 along its axial direction, and the output end of the ratchet wrench 10 or the electric wrench 9 can drive the direct drive main shaft 1 to rotate through the polygonal hole position of the second end tube 3. A sheath 6 is installed on the direct drive main shaft 1 at a position close to the first end tube 2 on the side of the second end tube 3.
[0029] In the above embodiments, as Figure 5 shown, a long strip key is usually provided on the outer side of the output shaft on the motor side of the speed reducer. The key on the motor shaft is a mechanical part for connecting the shaft and the rotating part. Thus, the through hole 4 on the first end tube 2 at one end of the direct drive main shaft 1 of the present application is designed with reference to the shape and size of the output shaft on the motor side of the speed reducer (including providing a keyway 5 with the same shape as the key on the motor shaft in the axial direction of the through hole 4). After the through hole 4 of the first end tube 2 is matched with the output shaft on the motor side of the speed reducer, the turning effect of the speed reducer can be achieved by rotating the direct drive main shaft 1. As Figure 4 and Figure 5 shown, the polygonal hole position provided at the other end of the direct drive main shaft 1 of the present application is a socket that can be matched with the output end of the ratchet wrench 10 or the electric wrench 9. As Figure 4As shown in the figure, when it is necessary to inspect the speed reducer in the pitch system, an electric wrench 9 can be used. The output end of the electric wrench 9 is matched with the polygonal hole position at the center of the second end tube 3. For speed reducers with a speed ratio above 100 in the pitch system, the electric wrench 9 is significantly more time-saving and labor-saving than the traditional crank-type manual turning auxiliary device during use. Moreover, during the use process, only the output end of the electric wrench 9 rotates, and its body position remains basically unchanged. In this way, the space requirement of the entire equipment can be reduced during turning.
[0030] In addition, when turning the speed reducer of the yaw system, since the yaw motor rotates too fast, using the yaw motor for detection is likely to cause equipment damage (high-speed operation of the yaw motor will cause situations such as broken teeth in the speed reducer). Therefore, when inspecting the yaw speed reducer, it is often necessary to turn it slowly. If there is an adjustable-speed electric wrench 9 on-site, the worker can use the electric wrench 9 to detect the yaw motor in the above-mentioned manner. If the electric wrench 9 used on-site cannot achieve the effect of slow turning, at this time, in addition to using the electric wrench 9, the worker can also use a ratchet wrench 10 for manual turning, as Figure 5 shown in the figure. When using the ratchet wrench 10 for manual turning, the output end of the ratchet wrench 10 is matched with the polygonal hole position at the center of the second end tube 3, and the ratchet wrench 10 is turned to realize the inspection of the yaw speed reducer. Compared with the traditional crank-type manual turning auxiliary device, the ratchet wrench 10 does not need to swing the handle repeatedly during use, and only needs to maintain the positioning to complete tightening or loosening the screw. This design improves work efficiency. Based on the special design of the ratchet wrench 10, it can also be used in a narrow space or under limited angles, saving the trouble of frequent handover and being very convenient and fast to operate.
[0031] Since the length of the direct drive main shaft 1 is relatively long and the contact part between it and the motor side of the speed reducer is limited, during turning, the direct drive main shaft 1 is prone to swing or fall off. Therefore, in this application, an upper sheath 6 is provided on the direct drive main shaft 1 so that when the worker turns the direct drive main shaft 1, he can hold the direct drive main shaft 1 by hand to make it rotate more smoothly, ensuring that the force generated when the electric wrench 9 or the ratchet wrench 10 works is smoothly transmitted to the motor side of the speed reducer.
[0032] Furthermore, as Figures 1 - 3 shown in the figure, the sheath 6 includes a rotating support portion 61 and an anti-slip gripping portion 62. The anti-slip gripping portion 62 is rotatably connected to the direct drive main shaft 1 through the rotating support portion 61.
[0033] In the above embodiments, the rotating support portion 61 of the sheath 6 can provide a supporting force for the anti-slip gripping portion 62 through the direct drive main shaft 1. In addition, the rotating support portion 61 is rotatably connected to the direct drive main shaft 1. In this way, when the worker holds the anti-slip gripping portion 62 and turns the direct drive main shaft 1, the anti-slip gripping portion 62 can remain stationary, thus avoiding friction with the worker's palm.
[0034] Further, as Figure 2 and Figure 3 shown, the rotating support portion 61 includes two bearings 611. The inner rings of the two bearings 611 are both sleeved on the outer side of the direct drive spindle 1, and the inner rings of the two bearings 611 are fixed to the outer side wall of the direct drive spindle 1 by welding;
[0035] The two bearings 611 are spaced along the axial direction of the direct drive spindle 1. An inner support tube 612 and an outer support tube 613 are provided at the interval between the two bearings 611. The two ends of the inner support tube 612 are respectively fixedly connected to the mutually approaching ends of the inner rings of the two bearings 611. The outer support tube 613 is coaxially sleeved on the outer side of the inner support tube 612 and its two ends are respectively fixedly connected to the mutually approaching ends of the outer rings of the two bearings 611.
[0036] In the above embodiments, the two ends of the inner support tube 612 are respectively welded to the mutually approaching ends of the inner rings of the two bearings 611, and the inner rings of the two bearings 611 and the direct drive spindle 1 are both welded and fixed together, so as to ensure the connection and fixing effect between the two bearings 611 and the direct drive spindle 1. The two ends of the outer support tube 613 are respectively welded to the mutually approaching ends of the outer rings of the two bearings 611, which can effectively increase the area between the two bearings 611 available for installing the anti-slip gripping portion 62, thereby increasing the contact area between the worker's hand and the anti-slip gripping portion 62. Since the anti-slip gripping portion 62 is installed on the outer rings of the two bearings 611 and the outer support tube 613 between them, and there are rotating bearings 611 between the outer rings and the inner rings of the two bearings 611, when the direct drive spindle 1 rotates, the hand of the worker holding the anti-slip gripping portion 62 can remain stationary with the anti-slip gripping portion 62, so that the worker can stably hold the direct drive spindle 1 upright, and at the same time, it can also prevent the anti-slip gripping portion 62 from moving relative to the worker's hand, causing wear to the worker's hand or the gloves on the hand.
[0037] Further, as Figure 2 and Figure 3 shown, the anti-slip gripping portion 62 includes a rubber sleeve grip 621. The rubber sleeve grip 621 is sleeved on the outer sides of the outer rings of the two bearings 611 and the outer support tube 613 between them. A plurality of anti-slip textures 622 are evenly arranged on the surface of the rubber sleeve grip 621 along the circumferential direction, and the anti-slip textures 622 are all arranged along the axial direction of the rubber sleeve grip 621.
[0038] In the above embodiments, the rubber sleeve grip 621 not only has elasticity, facilitating installation and removal on the outer rings of the two bearings 611 and the external support tube 613 therebetween, but also the flexible rubber sleeve grip 621 enables workers to hold it more comfortably. The multiple anti-slip textures 622 provided on the surface of the rubber sleeve grip 621 in the above manner can effectively increase the friction between the worker's hand and the rubber sleeve grip 621, making the worker hold the rubber sleeve grip 621 more firmly.
[0039] Further, as Figure 1 and Figure 2 shown, the outer side wall of the rubber sleeve grip 621 is wavy along its axial direction.
[0040] In the above embodiments, the outer side wall of the rubber sleeve grip 621 is wavy along its axial direction. In this way, when a worker holds the rubber sleeve grip 621, each finger can better fit with the outer side wall of the rubber sleeve grip 621, thereby increasing the contact area between the two and improving the holding effect.
[0041] Further, as Figure 3 shown, a retaining ring 7 is welded to each of the mutually remote ends of the outer rings of the two bearings 611. The inner diameter of the retaining ring 7 is equal to the inner diameter of the outer ring of the bearing 611, and the outer diameter of the retaining ring 7 is greater than the outer diameter of the outer ring of the bearing 611.
[0042] In the above embodiments, the retaining rings 7 provided on the outer rings of the two bearings 611 in the above manner can prevent the rubber sleeve grip 621 from falling off axially along the bearing 611 during use.
[0043] Further, as Figure 1 shown, the polygonal hole position on the second end head tube 3 is a 1 / 2 square drive hole 8.
[0044] In the above embodiments, the 1 / 2 drive square head is a common specification in the output ends of the large fly ratchet wrench 10 and the electric wrench 9. Setting the polygonal hole position on the second end head tube 3 of the present application to the matching 1 / 2 square drive hole 8 can make it more convenient for workers during actual use.
[0045] The implementation principle of this embodiment is as follows: When it is necessary to inspect the reducer in the pitch system, first connect the first end head tube 2 of the direct drive main shaft 1 to the output shaft on the motor side of the reducer in the pitch system. Then, cooperate the output end of the electric wrench 9 with the 1 / 2 square drive hole 8 at the center of the second end head tube 3. After holding the rubber sleeve grip 621 and straightening the direct drive main shaft 1, the electric wrench 9 can be started to perform the barring operation using the direct drive main shaft 1.
[0046] When it is necessary to turn the reducer of the yaw system by hand, since the reducer of the yaw system needs to be turned slowly by hand, the worker can use the ratchet wrench 10 for manual turning. When using the ratchet wrench 10 for manual turning, it is also necessary to first connect the first end pipe 2 of the direct drive main shaft 1 to the output shaft on the reducer motor side in the pitch system, and then assemble the output end of the first section of the ratchet wrench 10 and the 1 / 2 square drive hole 8 in the center of the first end pipe 2. Continuously turning the ratchet wrench 10 can realize the inspection of the yaw reducer.
[0047] The reducer turning auxiliary device of the present application can not only select different wrenches according to different detection environments, but also requires less working space during the turning process, and correspondingly, it is less affected by the internal environment space of the wind turbine.
[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A decelerator barring gear auxiliary device, characterized in that: It includes a direct drive spindle (1), one end of the direct drive spindle (1) is fixedly connected to a first end head tube (2), the other end of the direct drive spindle (1) is fixedly connected to a second end head tube (3), and the first end head tube (2), the direct drive spindle (1) and the second end head tube (3) are coaxially arranged; A through hole (4) is provided at the central position of the first end head tube (2) along its axis direction, the diameter of the through hole (4) is equal to the diameter of the output shaft on the reducer motor side, and a keyway (5) is provided on one side of the through hole (4) along its axis direction, and the shape of the keyway (5) corresponds to the key shape on the output shaft of the reducer motor side; A polygonal hole position is provided at the central position of the second end head tube (3) along its axis direction, and the output end of a ratchet wrench (10) or an electric wrench (9) can drive the direct drive spindle (1) to rotate through the polygonal hole position of the second end head tube (3); A sheath (6) is installed on the direct drive spindle (1) at a position where the second end head tube (3) is close to the first end head tube (2).
2. The auxiliary device for turning the reducer according to claim 1, characterized in that: The sheath (6) includes a rotating support part (61) and an anti-slip gripping part (62), and the anti-slip gripping part (62) is rotationally connected to the direct drive spindle (1) through the rotating support part (61).
3. The auxiliary device for turning the reducer according to claim 2, characterized in that: The rotating support part (61) includes two bearings (611), the inner rings of the two bearings (611) are sleeved on the outer side of the direct drive spindle (1), and the inner rings of the two bearings (611) and the outer side wall of the direct drive spindle (1) are fixed together by welding; The two bearings (611) have a spacing along the axis direction on the direct drive spindle (1), and an inner support tube (612) and an outer support tube (613) are provided at the spacing between the two bearings (611). The two ends of the inner support tube (612) are respectively fixedly connected to the mutually approaching ends of the inner rings of the two bearings (611), and the outer support tube (613) is coaxially sleeved on the outer side of the inner support tube (612) and its two ends are respectively fixedly connected to the mutually approaching ends of the outer rings of the two bearings (611).
4. The auxiliary device for turning the reducer according to claim 3, wherein: The anti-slip gripping part (62) includes a rubber sleeve handle (621), the rubber sleeve handle (621) is sleeved on the outer sides of the outer rings of the two bearings (611) and the outer support tube (613) between them, and a plurality of anti-slip textures (622) are uniformly arranged on the surface of the rubber sleeve handle (621) along the circumferential direction, and the anti-slip textures (622) are all arranged along the axis direction of the rubber sleeve handle (621).
5. The auxiliary device for turning the reducer according to claim 4, characterized in that: The outer side wall of the rubber sleeve handle (621) is wavy along its axis direction.
6. The auxiliary device for turning the reducer according to claim 5, wherein: A retaining ring (7) is welded to the mutually remote ends of the outer rings of the two bearings (611), the inner diameter of the retaining ring (7) is equal to the inner diameter of the outer ring of the bearing (611), and the outer diameter of the retaining ring (7) is larger than the outer diameter of the outer ring of the bearing (611).
7. The auxiliary device for turning the reducer according to any one of claims 1 to 6, characterized in that: The polygonal hole position on the second end head tube (3) is a 1 / 2 square drive hole (8).