Actuator for contactless application of radial forces on a rotating component

Abstract

The present application belongs to the technical field of actuator, and discloses a kind of non-contact exerting radial force actuator on rotating component, and the purpose is to make actuator can realize high speed and exert radial force on rotating component non-contact.The actuator of the present application comprises oil sprayer, actuator fan ring and actuator shell, the oil sprayer supplies oil to actuator fan ring through injection hole, and the actuator fan ring can swing flexibly on the inner hole of actuator shell through pad, and through end leakage groove, oil blocking edge, oil guide hole and cooling hole on the actuator fan ring, as well as the structure of flow guide plate and oil guide groove on two end faces, the low temperature lubricating oil leaked from upstream end of actuator fan ring is used to cool high temperature area downstream of actuator fan ring, which effectively reduces the temperature of actuator fan ring, and realizes the function of non-contact loading on rotating component at high speed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of actuator, and particularly relates to a non-contact radial force actuator for rotating components. BACKGROUND

[0002] The function of the actuator is to exert control force on the control object according to the determined control law, which can be applied to the development of test and performance verification of rotating components of organic working fluid turbine prototype in the fields of geothermal power generation, medium and low temperature waste heat power generation, natural gas pressure power generation, etc. In order to test the new products for supporting the rotating components, such as the new products of high-precision rolling bearings, dynamic pressure sliding bearings, static pressure bearings, magnetic suspension bearings, air bearing supporting components, etc., the actuator is needed to exert radial force on the rotating components. The force of the actuator can come from hydraulic, pneumatic, electric or electromagnetic force. According to whether the actuator is in contact with the rotating component during the operation of the actuator, the actuator can be divided into contact type actuator and non-contact type actuator. The actuator is called actuator, and the actuator directly in contact with the rotating component is called contact type actuator, and the actuator not directly in contact with the rotating component is called non-contact type actuator.

[0003] The contact type actuator usually has a rolling bearing, and its feature is that the actuator is directly in contact with the rotating component, so the load on the rotating component is large. However, the friction and friction loss are large due to the direct contact between the actuator and the rotating component, and the linear speed of the applicable rotating component is generally not more than 30 meters per second.

[0004] The non-contact type actuator is separated from the rotating component by magnetic gap, gas film, liquid film, etc., so the linear speed of the applicable rotating component is higher. However, the load on the rotating component of the actuator using magnetic gap or gas film is very small, which is usually not used in the field of energy power engineering. The load on the rotating component of the actuator using liquid film is larger. In order to ensure the safety and reliability of the actuator, the linear speed of the applicable rotating component of the existing technology can reach 70 meters per second at most.

[0005] The rotating component of large equipment in the field of energy power usually adopts sliding bearing. The high-speed heavy-load sliding bearing test needs to use the actuator to exert a larger force on the high-speed rotating rotating component. According to the size of the sliding bearing to be tested, the radial force exerted by the actuator usually needs to reach tens of thousands of newtons to hundreds of thousands of newtons. In order to develop the sliding bearing supporting components for geothermal power generation, medium and low temperature waste heat power generation, natural gas pressure power generation, pipeline compressor, ORC unit, the linear speed of the rotating component of the bearing test bench of Dongfang Turbine Co., Ltd. reaches 105 meters per second. The existing actuator technology cannot meet the functional requirements. In order to reliably exert non-contact radial force on the rotating component at high speed, the actuator needs to be innovatively designed. SUMMARY

[0006] To address the shortcomings of existing technologies, this invention provides an actuator that applies radial force to a rotating component without contact. This actuator can apply radial force to a rotating component without contact at high speeds, while simultaneously using the low-temperature lubricating oil leaking from the upstream end of the actuator fan ring to cool the high-temperature area downstream of the actuator fan ring, thereby reducing the temperature of the actuator fan ring and achieving safe and reliable operation.

[0007] To achieve the objective of this invention, the technical solution adopted is as follows:

[0008] An actuator that applies radial force to a rotating component without contact, the actuator comprising an injector, an actuator fan ring, and an actuator housing.

[0009] The top of the injector is sharpened to form a pointed edge. The top of the injector is sharpened to reduce the corresponding area of ​​the journal of the rotating component. The top of the injector is machined with a lubricating oil injection hole. The oil inlet hole at the bottom of the injector is connected to an external oil inlet pipe. The injector and actuator housing are connected on the oil inlet side of the actuator fan ring and support the actuator fan ring. Two sets of injectors are arranged in parallel along the axial direction.

[0010] The actuator fan ring has end drain grooves and corresponding oil blocking edges and oil guide holes at both upstream ends. Oil guide holes are provided on both ends of the actuator fan ring, and the oil guide holes are connected to the end drain grooves. Guide plates are installed on both ends of the actuator fan ring. Cooling holes are provided at both downstream ends of the actuator fan ring. Oil guide grooves are provided on the guide plates, which are connected to the end drain grooves and cooling holes. The guide plates guide the low-temperature lubricating oil drained from the upstream end of the actuator fan ring to the cooling holes in the high-temperature area downstream of the actuator fan ring through the oil guide grooves designed inside. Two sets of actuator fan rings are arranged in parallel along the axial direction.

[0011] The actuator housing has a fan-ring structure. The outer back of the actuator housing has a loading rod mounting hole for mounting a hydraulic loading device. The loading rod mounting hole is a threaded hole, and its center is located in the same position as the center of the pad on the back of the actuator fan ring. The inner side of the actuator housing has an inner hole for mounting two parallel actuator fan rings. The inner hole of the actuator housing has arc surfaces along the axial and circumferential directions to form a hyperboloid convex structure, which allows the actuator fan ring to swing flexibly. A fan-shaped boss is provided between the inner holes of the actuator housing. End plates are installed at both ends of the actuator housing to suspend the actuator fan ring and limit its axial movement.

[0012] The injector and actuator housing are connected on the oil inlet side of the actuator fan ring and support the actuator fan ring. The actuator fan ring is supported on the inner hole of the actuator housing by a pad and can swing flexibly.

[0013] Furthermore, the circumferential wrap angle α of the end drain groove is 30% to 50% of the wrap angle β of the actuator fan ring, and the axial width A of the end drain groove is 5% to 15% of the axial width B of the actuator fan ring.

[0014] Furthermore, the axial width C of the oil-blocking edge is 50% to 100% of the axial width A of the end drain groove, and the inner diameter of the oil-blocking edge is consistent with the inner diameter of the actuator fan ring.

[0015] Furthermore, the cooling hole extends from the end face of the actuator fan ring to the middle of the actuator fan ring and communicates with the oil drain hole designed on the oil outlet side of the actuator fan ring.

[0016] Furthermore, the low-temperature lubricating oil is a lubricating oil with a temperature range of 50℃ to 70℃.

[0017] Furthermore, the high-temperature zone is the area between 90℃ and 110℃.

[0018] This technical solution uses a flow guide structure to cool the downstream of the actuator fan ring by draining the lubricating oil from the upstream end of the actuator fan ring. Since the oil film thickness is large and the shear effect is relatively weak in the rotating parts and upstream of the actuator fan ring, the lubricating oil temperature rise is low. Using the low-temperature lubricating oil drained from the upstream end of the actuator fan ring to cool the high-temperature area downstream of the actuator fan ring effectively reduces the temperature of the actuator fan ring.

[0019] As a preferred embodiment of the above technical solution, the inner hole of the actuator fan ring is coated with a friction-reducing coating. The diameter of the inner hole of the actuator fan ring after the friction-reducing coating is cast is larger than the diameter of the rotating part that it is matched with to form a clearance fit. A temperature measuring hole is provided in the downstream area of ​​the actuator fan ring for installing a temperature measuring element to monitor the temperature of the actuator fan ring.

[0020] Furthermore, the back of the actuator fan ring is supported in the actuator housing by a pad block. The wrap angle between the center of the pad block and the oil inlet edge of the actuator fan ring is 55% to 70% of the wrap angle β of the actuator fan ring. The outer radius of the pad block is smaller than the inner radius of the actuator housing.

[0021] Furthermore, the end plates and sector-shaped bosses at both ends of the actuator housing are provided with pin holes for suspending the actuator fan ring. The width between the end plates and the sector-shaped bosses is greater than the width of the actuator fan ring to limit the axial movement of the actuator fan ring.

[0022] Furthermore, the actuator fan ring is hung on the actuator housing by a suspension pin. The diameter of the pin hole on the end plate and the fan-shaped boss is larger than the diameter of the suspension pin, so that the actuator fan ring can swing flexibly in all directions after being installed in the actuator housing.

[0023] Furthermore, the actuator housing is provided with a wire outlet hole 305, through which the temperature measuring wire can pass.

[0024] The present invention provides an actuator that applies radial force to a rotating component without contact. The actuator includes a hydraulic loading device, a loading rod, and an actuator. The hydraulic pressure of the hydraulic loading device is transmitted to the actuator through the loading rod.

[0025] The actuator fan ring provided by this technical solution is hung in a hanging pin hole with gaps on all four sides by a hanging pin. The back of the actuator fan ring is supported on the inner hole of the actuator housing with a hyperbolic convex structure by a pad. The above combination enables the actuator fan ring to adaptively adjust its position according to the deflection of the rotating component when it is under force, avoiding the risk of overload due to the actuator fan ring not being able to adapt to the deflection of the rotating component.

[0026] As a preferred embodiment of the above technical solution, the lubricating oil injection holes of the injector are distributed along the axial direction of the actuator fan ring, and the lubricating oil injection holes of the injector are arranged in 5 to 9 axial directions. The diameter of the injection holes is determined according to the lubricating oil flow rate required by the actuator.

[0027] Furthermore, the injector uses fastener A to fix the cover plate to the oil distribution hole to form a closed oil supply chamber.

[0028] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0029] 1. The actuator provided by this invention, which applies radial force to a rotating component without contact, has a special cooling structure. The upstream ends of the actuator fan ring are machined with end drain grooves, corresponding oil blocking edges, and oil guide holes. Guide plates are installed on both ends of the actuator fan ring. The guide plates guide the end drain lubricating oil from the upstream of the actuator fan ring to the cooling holes in the downstream of the actuator fan ring through the oil guide grooves designed inside. Through the above structure, the low-temperature lubricating oil from the upstream end drain of the actuator fan ring is used to cool the high-temperature area downstream of the actuator fan ring, effectively reducing the temperature of the actuator fan ring.

[0030] 2. The present invention provides an actuator that applies radial force to a rotating component without contact. The actuator directly supplies oil to the actuator fan ring via an oil injector. The lubricating oil enters the oil injector through a connecting pipe on the back of the actuator fan ring. The top of the oil injector is sharpened to avoid rubbing against the journal of the rotating component. The oil injector supplies 40% to 70% of the lubricating oil to lubricate the upstream of the actuator fan ring and then cools the high-temperature area downstream of the actuator fan ring through a guide structure. This efficiently realizes the secondary utilization of lubricating oil, saves the flow of cooling lubricating oil required by separately configuring cooling facilities for the actuator, simplifies the system configuration, and improves the reliability of the actuator operation.

[0031] 3. The present invention provides an actuator that applies radial force to a rotating component without contact. After the fan ring is subjected to force, the force passes through the center of the pad. The loading rod of the loading device is installed axially at the center of the two parallel actuator fan ring pads. The circumferential installation orientation of the loading rod of the loading device is consistent with the orientation of the center of the actuator fan ring pad. Through the above combination, the loading rod of the loading device applies radial force to the rotating component through the actuator smoothly and the direction of the applied radial force is unique, thereby ensuring the reliability of the actuator in realizing its function. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the actuator.

[0033] Figure 2 This is a schematic diagram of the actuator structure;

[0034] Figure 3 This is a schematic diagram of the fuel injector structure;

[0035] Figure 4 and Figure 5 This is a schematic diagram of the actuator fan ring structure;

[0036] Figure 6 This is a schematic diagram of the actuator housing.

[0037] Figure 7 This is a sectional view of the actuator housing along the axial direction.

[0038] In the diagram: 1—Injector, 101—Injection hole, 102—Sharp edge, 103—Oil inlet, 104—Oil distribution hole, 105—Cover plate, 106—Fastener A, 107—Fastener B, 2—Actuator fan ring, 201—End drain groove, 202—Oil blocking edge, 203—Oil inlet wedge, 204—Guide plate, 205—Oil drain hole, 206—Temperature measuring hole, 207—Oil guide hole, 208—Cooling hole, 209—Actuator fan ring inner hole, 210—Oil guide groove, 211—Padded block, 212—Suspension pin. 213—Fastener C, 214—Oil inlet edge, 215—Oil outlet edge, 3—Actuator housing, 301—End plate, 302—Hanging pin hole, 303—Fastener D, 304—Mounting hole, 305—Cable outlet hole, 306—Actuator housing inner hole, 307—Loading rod mounting hole, 308—Fan-shaped boss, 4—Loading rod, 5—Hydraulic loading device, α—End drain groove circumferential wrap angle, β—Actuator fan ring wrap angle, A—End drain groove axial width, B—Actuator fan ring axial width, C—Oil blocking edge axial width. Detailed Implementation

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] like Figure 1 and Figure 2 As shown, the actuator includes a hydraulic loading device 5, a loading rod 4, and an actuator. The hydraulic pressure of the hydraulic loading device is transmitted to the actuator through the loading rod. The actuator includes an actuator housing 3, two parallel injectors 1, and two parallel actuator fan rings 2. The specific features of the injectors are as follows: Figure 3 As shown, the specific characteristics of the actuator fan ring are as follows: Figure 4 and Figure 5 As shown, the specific features of the actuator housing are as follows: Figure 6 and Figure 7 As shown.

[0041] The injector 1 is fixed to the mounting hole 304 of the actuator housing 3 by fastener B107. The oil inlet 103 at the bottom of the injector 1 is connected to an external oil supply hose. The oil inlet 103 and the oil distribution hole 104 are interconnected inside the injector. The cover plate 105 is fixed to the injector 1 by fastener A106 to form a closed oil supply chamber. The top of the injector 1 is sharpened to form a pointed ridge 102. The pointed ridge 102 reduces the corresponding area between the injector and the journal of the rotating component to avoid bending of the rotating component due to friction. The top of the injector 1 is machined with a lubricating oil injection hole 101, which is interconnected with the oil distribution hole 104 to form a flow channel for directly supplying oil to the actuator fan ring.

[0042] The actuator fan ring 2 is supported on the actuator housing 3 inner hole 306 by a pad 211. The wrap angle between the pad 211 and the oil inlet edge 214 of the actuator fan ring is 55% to 70% of the wrap angle β of the actuator fan ring. The outer diameter of the pad 211 is smaller than the inner diameter of the actuator housing inner hole 306. The two ends of the pad 211 are hung on the pin holes 302 of the actuator housing 3 by the hanging pins 212. The inner diameter of the pin holes 302 is larger than the outer diameter of the hanging pins 212. Therefore, after the actuator fan ring is installed in the actuator housing, it can flexibly deflect with the pad 211 as the fulcrum.

[0043] An oil inlet wedge 203 is machined upstream of the inner hole of the actuator fan ring 2. End drain grooves 201 and corresponding oil blocking edges 202 are machined at both ends of the actuator fan ring 2. The circumferential wrap angle α of the end drain groove is 30%~50% of the wrap angle β of the actuator fan ring. The axial width A of the end drain groove is 5%~15% of the axial width B of the actuator fan ring. The axial width C of the oil blocking edge is 50%~100% of the axial width A of the end drain groove. The inner diameter of the oil blocking edge 202 is the same as the inner diameter of the actuator fan ring 2.

[0044] Lubricating oil supplied by injector 1 through injection hole 101 enters actuator fan ring 2 via oil inlet wedge 203. A lubricating oil film is formed between actuator fan ring 2 and rotating component journal through hydrodynamic lubrication. Because oil blocking edge 202 prevents most of the lubricating oil upstream of actuator fan ring 2 from flowing away along the end face of actuator fan ring 2, the lubricating oil leaking upstream of actuator fan ring 2 enters end drain groove 201. An oil guide hole 207 is machined on the upstream end face of actuator fan ring 2, and the end drain groove 201 communicates with the oil guide hole 207. A cooling hole 208 is machined on the downstream end face of actuator fan ring 2, and the cooling hole 208 communicates with the oil drain hole 205 machined on the oil outlet edge 215 of actuator fan ring. Furthermore, to introduce the low-temperature lubricating oil leaking from the upstream end of the actuator fan ring into the cooling holes downstream of the actuator fan ring to cool the high-temperature area of ​​the actuator fan ring, the two end faces of the actuator fan ring 2 are connected to the guide plate 204 by fastener C213. The oil guide groove 210 of the guide plate connects the oil guide hole 207 and the cooling hole 208. Furthermore, the inner hole 209 of the actuator fan ring is coated with a friction-reducing coating. After the friction-reducing coating is applied, the diameter of the inner hole 209 of the actuator fan ring is larger than the diameter of the rotating part it mates with to form a clearance fit. Furthermore, the low-temperature lubricating oil is a 50℃~70℃ lubricating oil, and the high-temperature area is a 90℃~110℃ area.

[0045] Based on the principle of hydrodynamic lubrication, the upstream oil film thickness of the actuator fan ring is large, resulting in a weak shear effect and a lower lubricating oil temperature rise. Conversely, the downstream oil film exhibits a strong shear effect, leading to a higher lubricating oil temperature. When the linear velocity of the rotating component exceeds 70 m / s, this excessively high lubricating oil temperature rise will cause the actuator fan ring temperature to exceed its limit. To address this technical problem when the linear velocity of the rotating component reaches 105 m / s, this embodiment utilizes the lubricating oil draining from the upstream end of the actuator fan ring through a guide structure to cool the downstream area of ​​the actuator fan ring. This efficiently achieves secondary utilization of the lubricating oil, effectively reducing the temperature of the actuator fan ring, saving the required cooling lubricating oil flow rate compared to separately configuring cooling facilities for the actuator, simplifying system configuration, and improving the reliability of the actuator operation. To monitor the temperature of the actuator fan ring in real time, the actuator fan ring 2 is equipped with a temperature sensing hole 206 for installing a temperature sensing element to monitor the operating temperature of the actuator fan ring in real time.

[0046] The actuator housing 3 has two parallel inner holes 306 along the axial direction for mounting the actuator fan ring. To improve the flexibility of the actuator fan ring in adaptively adjusting its working position, the inner holes 306 are machined with an arc surface Ra along the axial direction and an arc surface Rr along the circumferential direction, thus forming a hyperbolic convex structure. End plates 301 are connected to both ends of the actuator housing 3 by fasteners D303. The end plates 301 and the fan-shaped boss 308 in the middle of the actuator housing are used to restrict the axial movement of the actuator fan ring.

[0047] Selectively, but preferably, the actuator is connected to the hydraulic loading device 5 via the loading rod 4, thereby transmitting the hydraulic pressure of the hydraulic loading device 5 to the actuator through the connection of the loading rod 4. An injector 1 is installed on the oil inlet edge 214 of the actuator fan ring 2, enabling it to support the actuator fan ring 2. The loading rod mounting hole 307 machined on the back of the actuator housing 3 is used to install the loading rod of the hydraulic loading device. During operation, a lubricating oil film is established between the actuator fan ring 2 and the rotating parts. After the actuator fan ring 2 is subjected to force, the force is transmitted to the actuator housing through the pad 211. The loading rod 4 is axially installed at the center of the two parallel actuator fan rings 2. The circumferential installation orientation of the loading rod 4 coincides with the orientation of the center of the actuator fan ring pad. This combination ensures the smoothness of the loading rod of the loading device applying radial force to the rotating parts through the actuator and the uniqueness of the applied radial force direction, thus guaranteeing the reliability of the actuator in performing its function.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An actuator that applies radial force to a rotating component without contact, characterized in that, include: Injector (1), actuator fan ring (2), actuator housing (3); The top of the injector (1) is sharpened to form a sharp edge (102). The top of the injector (1) is provided with a spray hole (101). The bottom of the injector (1) is provided with an oil inlet hole (103). The side of the injector (1) is provided with an oil distribution hole (104). The oil inlet hole (103) and the oil distribution hole (104) are interconnected inside the injector (1). The spray hole (101) and the oil distribution hole (104) are interconnected inside the injector (1). Two sets of injectors (1) are arranged in parallel along the axial direction. The actuator fan ring (2) has end drain grooves (201) and corresponding oil blocking edges (202) at both upstream ends. The actuator fan ring has oil guide holes (207) on both end faces. The oil guide holes (207) are connected to the end drain grooves (201). The actuator fan ring has guide plates (204) installed on both end faces. The actuator fan ring has cooling holes (208) at both downstream ends. The guide plates (204) have oil guide grooves (210) connected to the end drain grooves (201) and cooling holes (208). The guide plates (204) guide the low-temperature lubricating oil drained from the upstream end of the actuator fan ring to the cooling holes (208) in the high-temperature area downstream of the actuator fan ring through the oil guide grooves (210) to reduce the temperature of the actuator fan ring. Two sets of actuator fan rings (2) are arranged in parallel along the axial direction. The low-temperature lubricating oil is 50℃~70℃ lubricating oil. The high-temperature area is 90℃~110℃ area. The actuator housing (3) is a fan ring structure. The outer back of the actuator housing (3) is provided with a loading rod mounting hole (307). The loading rod mounting hole (307) is a threaded hole. The center of the loading rod mounting hole (307) is located in the same position as the center of the pad (211) on the back of the actuator fan ring. The inner side of the actuator housing (3) is provided with an actuator housing inner hole (306) for installing two parallel actuator fan rings. The actuator housing inner hole (306) is machined with arc surfaces along the axial and circumferential directions to form a hyperbolic convex structure, allowing the actuator fan ring to swing flexibly. The actuator housing inner hole (306) is provided with a fan-shaped boss (308) in the middle. The actuator housing is provided with end plates (301) at both ends for suspending the actuator fan ring (2) and restricting its axial movement. The injector (1) and actuator housing (3) are connected on the oil inlet side of the actuator fan ring (2) and support the actuator fan ring (2). The actuator fan ring (2) is supported on the inner hole (306) of the actuator housing by a pad (211) and can swing flexibly.

2. The actuator for applying radial force to a rotating component without contact, as described in claim 1, is characterized in that: The circumferential wrap angle α of the end drain groove is 30% to 50% of the wrap angle β of the actuator fan ring, and the axial width A of the end drain groove is 5% to 15% of the axial width B of the actuator fan ring.

3. The actuator for applying radial force to a rotating component without contact, as described in claim 1, is characterized in that: The axial width C of the oil-blocking edge is 50% to 100% of the axial width A of the end drain groove, and the inner diameter of the oil-blocking edge (202) is the same as the inner diameter of the actuator fan ring (2).

4. The actuator for non-contact application of radial force on a rotating component according to claim 1, characterized in that: The cooling hole (208) extends from the end face of the actuator fan ring (2) to the middle of the actuator fan ring (2) and communicates with the oil drain hole (205) provided on the oil outlet edge (215) of the actuator fan ring (2).

5. The actuator for applying radial force to a rotating component without contact, as described in claim 1, is characterized in that: The inner hole (209) of the actuator fan ring is coated with a friction-reducing coating. The diameter of the inner hole (209) of the actuator fan ring after the friction-reducing coating is cast is larger than the diameter of the rotating part that it is matched with to form a clearance fit. A temperature measuring hole (206) is provided in the downstream area of ​​the actuator fan ring for installing a temperature measuring element to monitor the temperature of the actuator fan ring.

6. The actuator for non-contact application of radial force on a rotating component according to claim 1, characterized in that: The actuator fan ring (2) is supported on the back of the actuator housing (3) by a pad (211). The wrap angle between the center of the pad (211) and the oil inlet edge (214) of the actuator fan ring is 55% to 70% of the wrap angle β of the actuator fan ring. The outer radius of the pad (211) is smaller than the radius of the inner hole (306) of the actuator housing.

7. The actuator for applying radial force to a rotating component without contact, as described in claim 1, is characterized in that: The actuator housing (3) has a hanging pin hole (302) on the end plate (301) and the fan-shaped boss (308) for suspending the actuator fan ring. The width between the end plate (301) and the fan-shaped boss (308) is greater than the width of the actuator fan ring (2) to limit the axial movement of the actuator fan ring.

8. The actuator for applying radial force to a rotating component without contact, as described in claim 1, is characterized in that: The diameter of the pin hole (302) on the end plate (301) and the fan-shaped boss (308) is larger than the diameter of the suspension pin (212). After the actuator fan ring (2) is installed in the actuator housing (3), it can swing flexibly in all directions.

9. The actuator for non-contact application of radial force on a rotating component according to claim 1, characterized in that: The injection holes (101) of the injector (1) are distributed along the axial direction of the actuator fan ring (2). There are 5 to 9 injection holes (101) of the injector along the axial direction. The diameter of the injection holes is determined according to the required lubricating oil flow rate of the actuator.

10. The actuator for non-contact application of radial force on a rotating component according to claim 1, characterized in that: The injector (1) is fixed to the cover plate (105) on the oil distribution hole (104) by fastener A (106) to form a closed oil supply chamber.

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