Rainproof slewing device and slewing operation equipment

Abstract

This application relates to the field of slewing bearing technology and provides a rainproof slewing device and slewing operation equipment. The rainproof slewing device of this application includes an inner ring, an outer ring rotatably fitted onto the inner ring, and a first rainproof plate and a second rainproof plate. A first shielding portion of the first rainproof plate is used to shield the assembly gap between the inner and outer rings, and a second shielding portion of the second rainproof plate is used to shield the first shielding portion. The rainproof slewing device of this application, by setting the first and second rainproof plates, utilizes the first shielding portion to shield the assembly gap between the inner and outer rings, and simultaneously utilizes the second shielding portion to shield the first shielding portion, thus forming a double-layer rainproof protective structure. This prevents rainwater from entering the assembly gap, avoids grease loss and component corrosion within the assembly gap, and helps to extend the service life of the rainproof slewing device.

Description

Technical Field

[0001] This application relates to the field of slewing bearing technology, and in particular to a rainproof slewing device and slewing operation equipment. Background Technology

[0002] As the core transmission component for achieving relative rotational motion, the slewing device is widely used in various equipment requiring rotational operations, such as construction machinery, wind power equipment, and port machinery. It primarily provides stable support and flexible rotational guidance for the rotating components of the equipment through the relative rotation of the inner and outer rings, ensuring that the equipment can accurately complete its rotational operations.

[0003] In practical applications, slewing devices often need to operate in open-air environments for extended periods, inevitably facing corrosion from harsh weather conditions such as rain and snow. Because a clearance must be provided between the inner and outer rings of the slewing bearing to accommodate relative rotation, rainwater can seep into this clearance. This can directly cause the grease inside the clearance to emulsify and fail, disrupting the lubrication environment between the inner and outer rings and the internal rolling elements. It can also lead to corrosion of components, severely impacting the service life of the slewing device. Summary of the Invention

[0004] In view of this, this application aims to provide a rainproof rotating device to improve its service life.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0006] A rainproof rotating device includes an inner ring, an outer ring that rotates and is fitted onto the inner ring, and a first rain shield and a second rain shield.

[0007] The first rain shield includes an annular first plate body disposed at the top of either the inner ring or the outer ring, and a first shielding portion extending radially along the first plate body;

[0008] The second rain shield includes an annular second plate body disposed at the other top of the inner ring and the outer ring, and a second shielding portion extending radially along the second plate body;

[0009] The first blocking part is used to block the assembly gap between the inner ring and the outer ring, and the second blocking part is used to block the first blocking part.

[0010] Furthermore, the second shielding part is provided on the outer ring, and the second shielding part is provided with a wiper assembly;

[0011] The wiper assembly can wipe away rainwater from the first shield as the outer ring rotates.

[0012] Furthermore, the wiper assembly includes a wiper blade rotatably mounted on the second shielding portion along a preset axis;

[0013] As the outer ring rotates, the wiper blade can deflect to remove rainwater from the first shield and discharge the rainwater toward the side where the first plate is located.

[0014] Furthermore, the wiper blade has a first end near the first plate body and a second end near the second plate body, and the rotating shaft of the wiper blade is located between the first end and the second end, and is disposed near the second end;

[0015] And / or, the wiper blade is provided with a rubber strip that abuts against the first shielding part.

[0016] Furthermore, the wiper blades are configured as a plurality of blades arranged around the inner ring, and a synchronization component is provided between each wiper blade;

[0017] As the outer ring rotates, each of the wiper blades deflects synchronously via the synchronization assembly.

[0018] Furthermore, the wiper blade is provided with a limiting groove at one end near the first plate body, and a guide post is provided in the limiting groove;

[0019] The synchronization component includes a synchronization ring, and at least a portion of the synchronization ring is located in the limiting groove;

[0020] Corresponding to the guide post on each of the wiper blades, the synchronizing ring is provided with a radially extending groove, and the guide post can slide in the groove when the wiper blades deflect.

[0021] Furthermore, the first shielding part is provided with an annular rib extending circumferentially on the side near the second plate, and the top of the annular rib is provided with a first sealing ring that abuts against the second plate, so that the second plate, the first shielding part, the inner ring and the outer ring form a closed space.

[0022] Furthermore, the first rain shield has an integrated air supply channel, and the annular rib has an air vent on the side opposite to the outer ring that communicates with the air supply channel.

[0023] The first plate is provided with a connector that connects to the gas supply channel and is used to connect to an external gas source.

[0024] Furthermore, it also includes a housing that connects to the inner ring, the housing extending outward from the inner ring and surrounding the outer ring, and a second sealing ring being provided between the housing and the outer ring;

[0025] The second plate has a third shielding part on the side away from the inner ring for shielding the second sealing ring.

[0026] Compared with related technologies, this application has the following advantages:

[0027] (1) The rainproof rotary device described in this application, by setting a first rainproof plate and a second rainproof plate, uses the first shielding part to shield the assembly gap between the inner ring and the outer ring, and at the same time uses the second shielding part to shield the first shielding part, can form a double-layer rainproof protection structure, which prevents rainwater from entering the assembly gap, avoids the loss of lubricating grease in the assembly gap and the corrosion of parts, and is conducive to improving the service life of the rainproof rotary device.

[0028] (2) By setting the second shielding part on the outer ring and setting the wiper assembly on the second shielding part, the wiper assembly can be driven by the rotational driving force of the outer ring to wipe away the rainwater on the surface of the first shielding part in real time, thus preventing rainwater from accumulating on the surface of the first shielding part and seeping into the assembly gap, thereby further enhancing the rainproof and waterproof effect of the rainproof rotary device.

[0029] (3) By setting a rotatable wiper blade, when the outer ring rotates, the wiper blade deflects due to friction with the first shielding part. Thus, while wiping away the rainwater on the surface of the first shielding part, the wiper blade also transports and discharges the rainwater to the side where the first plate is located, preventing the rainwater from flowing towards the sealing gap and improving the targeting and effectiveness of wiping and drainage.

[0030] (4) By placing the wiper blade's pivot on the side closer to the second end, the direction of force on the wiper blade can be adjusted, ensuring that when the outer ring rotates, the wiper blade is deflected in the corresponding direction by the force from the first shield, thus ensuring that the wiper blade can discharge rainwater to the side where the first blade is located. At the same time, by setting a rubber strip, the wiper blade can flexibly abut against the first shield, ensuring the rainwater removal effect while preventing damage to the first shield and the wiper blade due to friction.

[0031] (5) By configuring multiple wiper blades around the inner ring, the efficiency of rainwater drainage on the first shield can be improved. At the same time, by setting a synchronization component, each wiper blade can be deflected synchronously with the rotation of the outer ring, ensuring that the action of each wiper blade is synchronized, thus ensuring the effective wiping and drainage of rainwater.

[0032] (6) By setting a synchronization ring and a sliding groove on the synchronization ring, the deflection power of each wiper blade can be transmitted by the sliding cooperation between the guide column and the sliding groove, which can ensure that multiple wiper blades move synchronously, ensure the stability and reliability of the transmission of the synchronization component, and avoid the problem of wiping failure caused by the asynchronous movement of each wiper blade.

[0033] (7) By setting the annular rib, rainwater can be further blocked, preventing rainwater from entering the assembly gap between the inner and outer rings through the first shield. At the same time, by setting the first sealing ring, the gap between the annular rib and the second plate can be sealed, further preventing rainwater, dust and other impurities from the outside from entering the enclosed space, which further helps to improve the service life of the rainproof rotary device.

[0034] (8) By setting up the air supply channel, gas can be supplied between the first shielding part and the second shielding part, so that an airflow is formed between the first shielding part and the second shielding part towards the side where the first plate is located. In this way, the airflow is used to further block rainwater and dust from entering the enclosed space, thereby avoiding the assembly gap from being affected by rainwater and dust.

[0035] (9) By providing an outer casing, the outer ring can be protected, and the outer casing can hold lubricating oil to ensure the smooth rotation of the outer ring. At the same time, by providing a third shielding part on the second plate, the second sealing ring can be shielded, preventing the second sealing ring from being directly exposed to the external environment. This can prevent the second sealing ring from aging and breaking due to sun and rain, extend the service life of the sealing ring, thereby improving the sealing performance between the outer casing and the outer ring, and further improving the service life of the rainproof rotary device.

[0036] Another objective of this application is to provide a rotary work equipment, which is equipped with the rainproof rotary device described above.

[0037] The rotary work equipment and / or rainproof rotary device described in this application have the same technical effects as related technologies, and will not be described in detail here. Attached Figure Description

[0038] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0039] Figure 1 This is a schematic diagram of the overall structure of the rainproof rotary device described in the embodiments of this application;

[0040] Figure 2 This is a schematic diagram of the internal structure of the rainproof rotary device described in the embodiments of this application;

[0041] Figure 3 for Figure 2 An enlarged view of the location shown in Figure A;

[0042] Figure 4 This is a schematic diagram of the structure of the wiper blade described in the embodiments of this application;

[0043] Figure 5 This is a front view of the wiper blade described in the embodiment of this application;

[0044] Figure 6 This is a schematic diagram of the structure of the first rain shield, wiper blade, and synchronization ring described in the embodiments of this application;

[0045] Figure 7 This is a schematic diagram of the structure of the first rain guard, wiper blade, and synchronization ring when the outer ring rotates as described in the embodiments of this application;

[0046] Figure 8 This is a bottom view of the first rain shield described in the embodiment of this application;

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Inner circle;

[0049] 2. Outer ring; 201. Dustproof ring;

[0050] 3. First rain shield; 301. First plate body; 302. First shielding part; 303. Annular rib; 3031. First sealing ring; 3032. Vent; 304. Air supply channel; 3041. Connector; 3042. Annular channel;

[0051] 4. Second rain shield; 401. Second panel; 402. Second shielding part; 403. Third shielding part;

[0052] 5. Wiper blade; 501. Rotary shaft; 502. Rubber strip; 503. Limiting groove; 504. Guide post;

[0053] 6. Synchronization ring; 601. Slide groove;

[0054] 7. Housing; 701. Second sealing ring; 702. Drive mechanism. Detailed Implementation

[0055] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0056] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0057] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0058] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0059] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0060] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0061] An embodiment of the first aspect of this application provides a rainproof rotary device.

[0062] In related technologies, a clearance must be provided between the inner and outer rings of a slewing bearing to meet relative rotation requirements. If rainwater seeps into the clearance between the inner and outer rings, it will directly cause the grease inside the clearance to emulsify and fail, disrupting the lubrication environment between the inner and outer rings and the internal rolling elements. It will also cause corrosion of components, seriously affecting the service life of the slewing device.

[0063] In view of this, in order to overcome the shortcomings of related technologies, the rainproof rotary device in this embodiment combines... Figure 1 , Figure 2As shown, the overall design includes an inner ring 1, an outer ring 2 that rotates and is fitted onto the inner ring 1, and a first rain shield 3 and a second rain shield 4.

[0064] The first rain shield 3 includes an annular first plate 301 disposed at the top of one of the inner ring 1 and the outer ring 2, and a first shielding portion 302 extending radially along the first plate 301. The second rain shield 4 includes an annular second plate 401 disposed at the other top of the inner ring 1 and the outer ring 2, and a second shielding portion 402 extending radially along the second plate 401. The first shielding portion 302 is used to shield the assembly gap between the inner ring 1 and the outer ring 2, and the second shielding portion 402 is used to shield the first shielding portion 302.

[0065] Therefore, by setting the first rain shield 3 and the second rain shield 4, the first shielding part 302 shields the assembly gap between the inner ring 1 and the outer ring 2, and the second shielding part 402 shields the first shielding part 302, thus forming a double-layer rainproof protection structure. This prevents rainwater from entering the assembly gap, avoids the loss of lubricating grease and corrosion of parts in the assembly gap, and helps to improve the service life of the rainproof rotary device.

[0066] Based on the above general description, specifically, in some exemplary embodiments, the second shielding part 402 is disposed on the outer ring 2, and the second shielding part 402 is provided with a wiper assembly. The wiper assembly is capable of wiping away rainwater on the first shielding part 302 as the outer ring 2 rotates.

[0067] By placing the second shielding part 402 on the outer ring 2 and installing a wiper assembly on the second shielding part 402, the wiper assembly can be driven by the rotational driving force of the outer ring 2 to wipe away rainwater on the surface of the first shielding part 302 in real time, preventing rainwater from accumulating on the surface of the first shielding part 302 and seeping into the assembly gap, thereby further enhancing the rainproof and waterproof effect of the rainproof rotary device.

[0068] In practical implementation, the first shielding part 302 and the second shielding part 402 of this embodiment are both arranged at an angle to facilitate the drainage of rainwater.

[0069] Furthermore, in this embodiment, the top of the outer ring 2 is higher than the top of the inner ring 1. Therefore, the assembly gap between the outer ring 2 and the inner ring 1 is located on the side closer to the center of the rainproof rotating device. Of course, if the height of the inner ring 1 is higher than the height of the outer ring 2, then in this embodiment, the first rainproof plate 3 is provided on the outer ring 2, and the second rainproof plate 4 is provided on the inner ring 1, allowing rainwater to be discharged outwards.

[0070] Combination Figure 3As shown, in some exemplary embodiments, the wiper assembly includes a wiper blade 5 rotatably mounted on the second shield 402 along a preset axis. As the outer ring 2 rotates, the wiper blade 5 can deflect to wipe away rainwater on the first shield 302 and discharge the rainwater toward the side where the first plate body 301 is located.

[0071] By setting a rotatable wiper blade 5, when the outer ring 2 rotates, the wiper blade 5 deflects due to friction with the first shielding part 302. As a result, while wiping away the rainwater on the surface of the first shielding part 302, the wiper blade 5 transports and discharges the rainwater to the side where the first plate body 301 is located, preventing the rainwater from flowing towards the sealing gap and improving the targeting and effectiveness of wiping and drainage.

[0072] Specifically, in this embodiment, the wiper blade 5 has a first end near the first plate body 301 and a second end near the second plate body 401. The rotating shaft 501 of the wiper blade 5 is located between the first end and the second end, and is disposed near the second end.

[0073] Combination Figure 6 , Figure 7 As shown, in Figure 7 In the diagram, arrow b indicates the rotation direction of the outer ring 2, and the wiper blade 5 will move in the direction indicated by arrow b as the outer ring 2 rotates. Arrow c indicates the rotation direction of the wiper blade.

[0074] Understandably, by placing the rotating shaft 501 of the wiper blade 5 closer to the second end, when the wiper blade 5 rubs against the first shielding part 302, the lever arm of the second end of the wiper blade 5 is longer, causing the second end of the wiper blade 5 to deflect away from the rotation direction of the outer ring 2, thus facilitating the drainage of rainwater. Conversely, if the rotating shaft 501 of the wiper blade 5 is placed closer to the first end, the deflected wiper blade 5 will transport rainwater towards the side closer to the outer ring 2, resulting in water entering the assembly gap.

[0075] Therefore, by setting the position of the rotating shaft 501, the direction of force on the wiper blade 5 can be adjusted, ensuring that when the outer ring 2 rotates, the wiper blade 5 can be deflected in the corresponding direction by the force from the first shielding part 302, so as to ensure that the wiper blade 5 can discharge rainwater to the side where the first plate body 301 is located.

[0076] In addition, combined Figure 3 As shown, in one specific implementation, the wiper blade 5 of this embodiment is provided with a rubber strip 502 that abuts against the first shielding part 302. At the same time, by providing the rubber strip 502, the wiper blade 5 can flexibly abut against the first shielding part 302, ensuring the rainwater wiping effect while preventing the first shielding part 302 and the wiper blade 5 from being damaged due to friction.

[0077] In specific implementation, combined with Figure 4 , Figure 5 As shown, a rubber strip 502 is also provided on the side of the wiper blade 5 facing the second blocking part 402. The rubber strip 502 is snapped onto both sides of the wiper blade 5, and a cavity is formed inside the rubber strip 502 to facilitate compression of the rubber strip 502 and ensure that the rubber strip 502 is in contact with the first blocking part 302 and the second blocking part 402.

[0078] Because the first shielding part 302 and the second shielding part 402 are curved structures, the distance between the upper and lower ends of the wiper blade 5 and the first shielding part 302 and the second shielding part 402 will change when the wiper blade 5 deflects. Therefore, by setting the rubber strip 502, it is possible to adapt to the above-mentioned distance change and ensure that the wiper blade 5 is always in contact with the first shielding part 302 and the second shielding part 402 to ensure the wiping effect of rainwater.

[0079] In some exemplary embodiments, multiple wiper blades 5 are configured to surround the inner ring 1, and a synchronization component is provided between each wiper blade 5. As the outer ring 2 rotates, each wiper blade 5 deflects synchronously via the synchronization component. By configuring multiple wiper blades 5 surrounding the inner ring 1, the efficiency of rainwater removal from the first shielding portion 302 can be improved. Simultaneously, by providing the synchronization component, each wiper blade 5 can deflect synchronously as the outer ring 2 rotates, ensuring synchronized action of each wiper blade 5 and guaranteeing effective rainwater removal and drainage.

[0080] Specifically, the wiper blade 5 has a limiting groove 503 at one end near the first plate body 301, and a guide post 504 is provided in the limiting groove 503. The synchronization assembly includes a synchronization ring 6, and at least a portion of the synchronization ring 6 is located in the limiting groove 503. Corresponding to the guide post 504 on each wiper blade 5, the synchronization ring 6 has a radially extending sliding groove 601, and the guide post 504 can slide within the sliding groove 601 when the wiper blade 5 deflects.

[0081] By setting a synchronization ring 6 and a sliding groove 601 on the synchronization ring 6, the deflection power of each wiper blade 5 can be transmitted through the sliding cooperation between the guide post 504 and the sliding groove 601. This ensures that multiple wiper blades 5 move synchronously, guarantees the stability and reliability of the transmission of the synchronization component, and avoids wiping failure caused by asynchronous movement of each wiper blade 5.

[0082] In practical implementation, the synchronizing ring 6 rotates synchronously with the outer ring 2 under the traction of each wiper blade 5. At the same time, since the radial position of the guide post 504 changes when the wiper blade 5 deflects, the groove 601 on the synchronizing ring 6 in this embodiment extends radially to adapt to the movement trajectory of the guide post 504.

[0083] In some exemplary embodiments, the first shielding part 302 is provided with an annular rib 303 extending circumferentially on the side near the second plate 401, and the top of the annular rib 303 is provided with a first sealing ring 3031 that abuts against the second plate 401, so that the second plate 401, the first shielding part 302, the inner ring 1 and the outer ring 2 form a closed space.

[0084] By setting the annular rib 303, rainwater can be further blocked, preventing it from entering the assembly gap between the inner ring 1 and the outer ring 2 through the first shielding part 302. At the same time, the setting of the first sealing ring 3031 can seal the gap between the annular rib 303 and the second plate 401, further preventing rainwater, dust and other impurities from entering the enclosed space, and further improving the service life of the rainproof rotary device.

[0085] In some exemplary embodiments, the first rain shield 3 integrates an air supply channel 304, and the annular rib 303 has an air vent 3032 communicating with the air supply channel 304 on the side opposite to the outer ring 2. The first plate body 301 is provided with a connector 3041 that communicates with the air supply channel 304 and is used to connect to an external air source.

[0086] By providing the air supply channel 304, gas can be supplied between the first shielding part 302 and the second shielding part 402, so that an airflow is formed between the first shielding part 302 and the second shielding part 402 towards the side where the first plate 301 is located. This airflow further blocks rainwater and dust from entering the enclosed space, thereby preventing the assembly gap from being affected by rainwater and dust.

[0087] In a specific implementation, the first rain shield 3 of this embodiment is provided with multiple air supply channels 304, and the first plate 301 is integrated with an annular channel 3042 connecting each air supply channel 304, and the connector 3041 is provided on the annular channel 3042. In addition, the air source of this embodiment is an air pump, which is well known to those skilled in the art.

[0088] The rainproof rotating device in this embodiment also includes a housing 7 connected to the inner ring 1. The housing 7 extends outward from the inner ring 1 and surrounds the outer ring 2. A second sealing ring 701 is provided between the housing 7 and the outer ring 2. A third shielding part 403 for shielding the second sealing ring 701 is provided on the side of the second plate 401 away from the inner ring 1.

[0089] By providing the outer casing 7, the outer ring 2 can be protected, and the outer casing 7 can hold lubricating oil to ensure the smooth rotation of the outer ring 2. At the same time, by providing the third shielding part 403 on the second plate 401, the second sealing ring 701 can be shielded, preventing the second sealing ring 701 from being directly exposed to the external environment. This prevents the second sealing ring 701 from aging and breaking due to sun and rain, extending the service life of the sealing ring, thereby improving the sealing performance between the outer casing 7 and the outer ring 2, and further enhancing the service life of the rainproof rotary device.

[0090] In specific implementation, a dustproof ring 201 is provided at the assembly gap between the outer ring 2 and the inner ring 1. The dustproof ring 201 is connected to the outer ring 2 to prevent external water, dust and other impurities from entering the assembly gap. In addition, the housing of this embodiment integrates a drive mechanism 702. The drive mechanism 702 has a worm that can be driven to rotate. The worm meshes with the outer ring 2 to drive the outer ring 2 to rotate.

[0091] It is worth noting that, regarding the rainproof rotating device of this embodiment, based on the above exemplary embodiments, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 8 As shown, it may include, for example, an inner ring 1, an outer ring 2 that rotates and is fitted onto the inner ring 1, and a first rain shield 3 and a second rain shield 4.

[0092] The first rain shield 3 includes an annular first plate 301 disposed at the top of one of the inner ring 1 and the outer ring 2, and a first shielding portion 302 extending radially along the first plate 301. The second rain shield 4 includes an annular second plate 401 disposed at the other top of the inner ring 1 and the outer ring 2, and a second shielding portion 402 extending radially along the second plate 401. The first shielding portion 302 is used to shield the assembly gap between the inner ring 1 and the outer ring 2, and the second shielding portion 402 is used to shield the first shielding portion 302.

[0093] Furthermore, a second shielding portion 402 is provided on the outer ring 2, and a wiper assembly is provided on the second shielding portion 402. The wiper assembly can wipe away rainwater on the first shielding portion 302 as the outer ring 2 rotates. The wiper assembly includes a wiper blade 5 rotatably mounted on the second shielding portion 402 along a preset axis. As the outer ring 2 rotates, the wiper blade 5 can deflect to wipe away rainwater on the first shielding portion 302 and discharge the rainwater toward the side where the first plate body 301 is located. The wiper blade 5 has a first end near the first plate body 301 and a second end near the second plate body 401. The rotating shaft 501 of the wiper blade 5 is located between the first end and the second end, and is disposed near the second end. The wiper blade 5 is provided with a rubber strip 502 that abuts against the first shielding portion 302.

[0094] Furthermore, multiple wiper blades 5 are configured to surround the inner ring 1, and a synchronization assembly is provided between each wiper blade 5. As the outer ring 2 rotates, each wiper blade 5 deflects synchronously via the synchronization assembly. A limiting groove 503 is provided at one end of each wiper blade 5 near the first plate body 301, and a guide post 504 is provided within the limiting groove 503. The synchronization assembly includes a synchronization ring 6, and at least a portion of the synchronization ring 6 is located within the limiting groove 503. Corresponding to the guide post 504 on each wiper blade 5, the synchronization ring 6 is provided with a radially extending groove 601, allowing the guide post 504 to slide within the groove 601 when the wiper blade 5 deflects.

[0095] Furthermore, the first shielding part 302 has an annular rib 303 extending circumferentially on the side near the second plate 401, and the top of the annular rib 303 has a first sealing ring 3031 that abuts against the second plate 401, so that the second plate 401, the first shielding part 302, the inner ring 1 and the outer ring 2 form a closed space. The first rain shield 3 integrates an air supply channel 304, and the side of the annular rib 303 facing away from the outer ring 2 has a vent 3032 that communicates with the air supply channel 304. The first plate 301 has a connector 3041 that communicates with the air supply channel 304 and is used to connect with an external air source.

[0096] Finally, this embodiment also includes a housing 7 connecting the inner ring 1. The housing 7 extends outward from the inner ring 1 and surrounds the outer ring 2, and a second sealing ring 701 is provided between the housing 7 and the outer ring 2. A third blocking portion 403 for blocking the second sealing ring 701 is provided on the side of the second plate 401 away from the inner ring 1.

[0097] In the preferred embodiment of the above rainproof rotating device, the specific setting and arrangement of the first rainproof plate 3, the second rainproof plate 4, the inner ring 1, the outer ring 2, etc. can still be referred to the description in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the first rainproof plate 3, the second rainproof plate 4, the inner ring 1, the outer ring 2, etc. can also be referred to the description in the above exemplary embodiments.

[0098] The rainproof rotary device of this embodiment adopts the above design. By setting the first rain shield 3 and the second rain shield 4, the first shielding part 302 shields the assembly gap between the inner ring 1 and the outer ring 2, and the second shielding part 402 shields the first shielding part 302, thus forming a double-layer rainproof protection structure. This prevents rainwater from entering the assembly gap, avoids the loss of lubricating grease in the assembly gap and the corrosion of parts, and helps to improve the service life of the rainproof rotary device.

[0099] An embodiment of the second aspect of this application provides a rotary work equipment, which is equipped with the rainproof rotary device described above.

[0100] The slewing equipment in this embodiment can be an excavator, crane, etc., which has a lower structure as a chassis and an upper structure as the working equipment. The aforementioned rainproof slewing device can be installed between the lower structure and the upper structure to drive the upper structure to rotate relative to the lower structure.

[0101] The rotary work equipment of this embodiment, by setting the above-mentioned rainproof rotary device, can improve the rainproof effect of the rotary work equipment and prevent external water from entering the assembly gap between the outer ring 2 and the inner ring 1 and affecting the normal operation of the rotary work equipment.

[0102] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A rainproof rotary device, characterized in that: It includes an inner ring (1), an outer ring (2) that rotates and is fitted on the inner ring (1), and a first rain shield (3) and a second rain shield (4); The first rain shield (3) includes a first annular plate (301) disposed at the top of one of the inner ring (1) and the outer ring (2), and a first shielding portion (302) extending radially along the first plate (301). The second rain shield (4) includes a ring-shaped second plate (401) disposed on the other top of the inner ring (1) and the outer ring (2), and a second shielding portion (402) extending radially along the second plate (401). The first blocking part (302) is used to block the assembly gap between the inner ring (1) and the outer ring (2), and the second blocking part (402) is used to block the first blocking part (302).

2. The rainproof rotary device according to claim 1, characterized in that: The second shielding part (402) is provided on the outer ring (2), and the second shielding part (402) is provided with a wiper assembly; The wiper assembly can wipe away rainwater on the first shield (302) as the outer ring (2) rotates.

3. The rainproof rotary device according to claim 2, characterized in that: The wiper assembly includes a wiper blade (5) that is rotatably mounted on the second shielding part (402) along a preset axis. As the outer ring (2) rotates, the wiper blade (5) can deflect to remove rainwater from the first shield (302) and discharge the rainwater to the side where the first plate (301) is located.

4. The rainproof rotary device according to claim 3, characterized in that: The wiper blade (5) has a first end near the first plate body (301) and a second end near the second plate body (401). The rotating shaft (501) of the wiper blade (5) is located between the first end and the second end and is disposed near the second end. And / or, the wiper blade (5) is provided with a rubber strip (502) that abuts against the first shielding part (302).

5. The rainproof rotary device according to claim 3, characterized in that: The wiper blades (5) are configured as a plurality of those arranged around the inner ring (1), and a synchronization component is provided between each wiper blade (5); As the outer ring (2) rotates, each of the wiper blades (5) deflects synchronously through the synchronization component.

6. The rainproof rotary device according to claim 5, characterized in that: The wiper blade (5) has a limiting groove (503) at one end near the first plate body (301), and a guide post (504) is provided in the limiting groove (503); The synchronization component includes a synchronization ring (6), and at least a portion of the synchronization ring (6) is located in the limiting groove (503); Corresponding to the guide post (504) on each of the wiper blades (5), the synchronizing ring (6) is provided with a radially extending groove (601), and the guide post (504) can slide in the groove (601) when the wiper blade (5) deflects.

7. The rainproof rotary device according to claim 1, characterized in that: The first shielding part (302) is provided with an annular rib (303) extending circumferentially on the side near the second plate (401), and the top of the annular rib (303) is provided with a first sealing ring (3031) abutting against the second plate (401), so that the second plate (401), the first shielding part (302), the inner ring (1) and the outer ring (2) form a closed space.

8. The rainproof rotary device according to claim 7, characterized in that: The first rain shield (3) has an integrated air supply channel (304), and the annular rib (303) has an air vent (3032) connected to the air supply channel (304) on the side away from the outer ring (2). The first plate (301) is provided with a connector (3041) that connects to the gas transmission channel (304) and is used to connect to an external gas source.

9. The rainproof rotary device according to any one of claims 1 to 8, characterized in that: It also includes a housing (7) that connects to the inner ring (1), the housing (7) extending outward from the inner ring (1) and surrounding the outer ring (2), and a second sealing ring (701) is provided between the housing (7) and the outer ring (2). The second plate (401) has a third shielding part (403) on the side away from the inner ring (1) for shielding the second sealing ring (701).

10. A rotary working device, characterized in that: The rotary work equipment is equipped with a rainproof rotary device as described in any one of claims 1 to 9.

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