Actuator adjusting and locking device

Abstract

The invention discloses an actuator adjusting and locking device, which belongs to the field and comprises a fixing ring, a first locking ring, a second locking ring, a locking piece and a joint, initial key grooves are evenly formed in the fixing ring in the circumferential direction, and initial keys matched with the initial key grooves are arranged on the first locking ring, so that initial angle adjustment of the device is achieved; a plurality of subdivision key grooves are annularly formed in a first locking ring, a plurality of positioning holes spaced from each subdivision key groove by a certain subdivision angle are formed in a second locking ring, and then the second locking ring rotates by different subdivision angles, so that the positioning holes and the subdivision key grooves in the corresponding groups are aligned and locked through positioning keys; subdivision angle adjustment of the device is realized, so that a two-stage angle adjustment structure is formed, and fine division of angles is realized; the connector is circumferentially locked on the second locking ring and can move by a corresponding length in the axial direction when rotating by an angle, so that adjustment of the zero position length of the actuator is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of actuators, and in particular relates to an actuator adjustment and locking device. Background Art

[0002] The servo and rudder surface in the actuator are connected to the body through a revolute pair, and the linear displacement of the servo is converted into the deflection angle of the rudder surface. In the actual assembly process, due to errors in processing and assembly, when the servo is at the zero length, the rudder surface will generally deviate from the designed zero angle, so it is usually necessary to adjust the servo zero position by fine-tuning the servo zero length.

[0003] At present, the commonly used actuator zeroing methods are shim zeroing and nut zeroing. Among them, the shim zeroing method requires the preparation of multiple series of adjustment shims in the field to achieve precise step adjustment by adjusting the shims, but the zeroing process requires the dismantling of the servo; while the nut zeroing method does not require the preparation of multiple adjustment shims, nor does it require the dismantling of the servo, and can achieve stepless zeroing, but the current nut zeroing method has low adjustment accuracy and cannot achieve precise step adjustment. Summary of the invention

[0004] In view of one or more of the above defects or improvement needs in the prior art, the present invention provides an actuator adjustment locking device, which can achieve fine angle division when the radial size of the angle adjustment device is limited.

[0005] To achieve the above object, the present invention provides an actuator adjustment locking device, which includes a fixing ring, a first locking ring, a second locking ring, a locking member and a joint;

[0006] One end surface of the fixing ring is provided with a fixing key that can be circumferentially fixed with the piston, and the other end surface is provided with a plurality of initial key grooves evenly arranged along the circumferential direction;

[0007] The first locking ring is arranged on a side of the fixing ring away from the piston, and an initial key matching the initial key groove is arranged on an end surface of one end of the first locking ring, so that the initial angle of the first locking ring relative to the fixing ring can be adjusted by matching the initial key with each initial key groove; a plurality of subdivided key grooves are arranged along the annular direction on the end surface of the first locking ring away from the fixing ring;

[0008] The second locking ring is arranged on a side of the first locking ring away from the fixing ring, and a plurality of positioning holes non-uniformly distributed along the circumferential direction are arranged on the second locking ring, the plurality of positioning holes and the plurality of subdivided key grooves are arranged in a one-to-one correspondence and are spaced at a certain angle, the second locking ring is rotated at different subdivided angles, the positioning holes and the subdivided key grooves in each group are aligned in sequence, and the positioning keys are passed through the aligned positioning holes and the subdivided key grooves in sequence, so as to circumferentially lock the second locking ring and the first locking ring;

[0009] The locking member is used to lock the fixing ring, the first locking ring and the second locking ring after the angles are adjusted;

[0010] The joint is circumferentially locked with the second locking ring, and one end of the joint passes through the second locking ring, the first locking ring and the fixing ring in sequence and is threadedly connected with the piston.

[0011] As a further improvement of the present invention, the initial key slots are set to m and are numbered in sequence along the circumferential direction. When the initial key matches the i-th initial key slot, the initial angle α of the first locking ring rotation is i It is 360°(i-1) / m.

[0012] As a further improvement of the present invention, the subdivided key grooves are evenly arranged in the circumferential direction along the end surface of the first locking ring, and are numbered in sequence along the circumferential direction. When the jth subdivided key groove is aligned with the corresponding positioning hole, the subdivided angle β of the rotation of the second locking ring is j It is 360°(j-1) / mn.

[0013] As a further improvement of the present invention, a protrusion is provided on the outer ring side of the first locking ring corresponding to the first subdivided keyway, and first recesses are provided corresponding to the other subdivided keyways; a lug is provided on the outer ring side of the second locking ring corresponding to the first positioning hole, and second recesses are provided corresponding to the other positioning holes, so as to facilitate observation and alignment when adjusting the angle.

[0014] As a further improvement of the present invention, a locking key is provided on the inner ring side of the second locking ring, and a locking key groove is provided axially extending at one end of the joint close to the second locking ring, so as to achieve circumferential locking between the second locking ring and the joint through key-groove cooperation, and the locking key can slide axially in the locking key groove.

[0015] As a further improvement of the present invention, the locking member includes a nut, which is arranged on a side of the second locking ring away from the first locking ring and is passed through the joint to tighten and lock the end side of the second locking ring.

[0016] As a further improvement of the present invention, a first safety hole is also provided on the second locking ring, and a second safety hole is provided on the nut, so that a safety wire can pass through the first safety hole and the second safety hole in sequence to fix the second locking ring and the nut in connection.

[0017] As a further improvement of the present invention, a boss is arranged on the end face of the second locking ring close to one end of the first locking ring, and a notch for accommodating the boss is also arranged on the end face of the first locking ring at one end where the subdivided keyway is arranged, and the boss can rotate within the notch by a certain angle to limit the rotation range of the second locking ring.

[0018] As a further improvement of the present invention, the maximum angle θ by which the boss can rotate in the notch is:

[0019] θ>360°(n-1) / mn.

[0020] As a further improvement of the present invention, two flattened portions are provided on opposite sides of the fixing ring to facilitate the use of a wrench to rotate the fixing ring.

[0021] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0022] In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:

[0023] (1) The actuator adjustment locking device of the present invention realizes initial angle adjustment of the device by key-slot cooperation between the fixed ring and the first locking ring, and realizes subdivision angle adjustment of the device by aligning the initial key slot in the corresponding group with the positioning hole and locking it with the positioning key. The two-stage angle adjustment structure formed by the initial angle adjustment and the subdivision angle adjustment realizes fine division of the angle; the zero-position length of the actuator is adjusted by circumferentially locking the joint on the second locking ring and being able to move a corresponding length in the axial direction when the rotation angle is reached.

[0024] (2) The actuator adjustment locking device of the present invention is provided with a protrusion and a plurality of first recesses on the first locking ring corresponding to each subdivided keyway, and a support ear and a plurality of second recesses on the second locking ring corresponding to each positioning hole, so that when adjusting the angle, it can be determined whether it is rotated into place by observing the position alignment of the protrusion and the support ear or the first recess and the second recess.

[0025] (3) The actuator adjustment locking device of the present invention arranges a nut in the locking member and locks the nut against the end side of the second locking ring to prevent the first locking ring and the second locking ring from sliding along the joint and causing the key to fall off the keyway, resulting in failure of angle adjustment. At the same time, the nut and the second locking ring are fixed together by a fuse, so that the nut always remains in a state of pressing against the end side of the second locking ring, avoiding unnecessary rotation of the nut, thereby achieving locking of the device adjustment angle.

[0026] (4) The actuator adjustment locking device of the present invention limits the rotation angle of the boss in the notch by setting a boss and a notch between the first locking ring and the second locking ring, thereby limiting the angular range of rotation of the second locking ring and avoiding angle adjustment errors.

[0027] (5) The actuator adjustment locking device of the present invention has a simple structure, is convenient to adjust and easy to operate, and can achieve fine angle division through the servo angle adjustment structure. During the zero adjustment process, the servo does not need to be disassembled to achieve fine zero position adjustment, which has good application prospects and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 is an exploded view of the overall structure of the actuator adjustment locking device in an embodiment of the present invention;

[0030] Figure 2 is a schematic structural diagram of a second locking ring in an embodiment of the present invention;

[0031] Figure 3 It is a schematic diagram of the assembly structure of the actuator adjustment locking device in an embodiment of the present invention.

[0032] In all the drawings, the same figure marks represent the same technical features, specifically: 1. fixing ring; 11. fixing key; 12. initial keyway; 13. flattened portion; 2. first locking ring; 21. initial key; 22. subdivided keyway; 23. protrusion; 24. first recess; 25. notch; 3. second locking ring; 31. lug; 32. second recess; 33. positioning hole; 34. locking key; 35. first safety hole; 36. boss; 4. positioning key; 5. nut; 51. second safety hole; 6. joint; 61. locking keyway; 7. piston; 71. fixing keyway. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] In the description of the present invention, it should be understood that, unless otherwise expressly specified and limited, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] Example:

[0039] See also Figure 1 to Figure 3The actuator adjustment locking device in the preferred embodiment of the present invention includes a fixing ring 1, a first locking ring 2, a second locking ring 3, a locking piece and a joint 6, so that the primary angle adjustment of the device is achieved by rotating the first locking ring 2 relative to the fixing ring 1, and the subdivision angle adjustment of the device is achieved by rotating the second locking ring 3 relative to the first locking ring 2, and the adjusted angle is locked by the locking piece.

[0040] Specifically, if Figure 1 As shown in , a piston 7 is provided on one side of the fixing ring 1 in the preferred embodiment, a plurality of fixing keys 11 are provided on the end surface of the fixing ring 1 close to the piston 7, and a plurality of fixing key grooves 71 are provided on the end surface of the piston 7 close to the fixing ring 1, so as to realize the circumferential fixation between the fixing ring 1 and the piston 7 through the fixing keys 11 and the fixing key grooves 71. At the same time, a plurality of initial key grooves 12 are provided on the end surface of the fixing ring 1 away from the piston 7, and the plurality of initial key grooves 12 are evenly arranged along the circumferential direction.

[0041] Preferably, two flattened portions 13 are symmetrically arranged on the ring side of the fixing ring 1 to facilitate the rotation of the fixing ring 1 with a wrench.

[0042] Furthermore, in the preferred embodiment, the first locking ring 2 is arranged on the side of the fixing ring 1 away from the piston 7, and an initial key 21 matching the initial keyway 12 is provided on the end face of the first locking ring 2 close to the fixing ring 1. The initial key 21 can be one or more, so as to achieve circumferential locking between the fixing ring 1 and the first locking ring 2 through the matching between the initial key 21 and the initial keyway 12, and adjust the locking angle between the first locking ring 2 and the fixing ring 1 by matching the initial key 21 with different initial keyways 12, thereby adjusting the initial angle of the device.

[0043] It can be understood that when the number of initial key slots 12 is m, the m initial key slots 12 evenly divide the end surface circumference of one end of the fixing ring 1 into m parts, and the angle of each part is 360° / m, that is, the angle between two adjacent initial key slots 12 is 360° / m. The multiple initial key slots 12 and the initial keys 21 are numbered in sequence, and the initial adjustment angle when the first initial key 21 matches the first initial key slot 12 is set to zero. Since the angle between the two adjacent initial key slots 12 is 360° / m, when the first initial key 21 is matched with the i-th initial key slot 12 by rotating the first locking ring 2, the initial angle α of the first locking ring 2 is i It is 360°(i-1) / m.

[0044] At the same time, a plurality of subdivided key grooves 22 are provided at the other end of the first locking ring 2 away from the fixing ring 1 , and the plurality of subdivided key grooves 22 are evenly or unevenly arranged in the circumferential direction along the end surface of the first locking ring 2 .

[0045] Furthermore, if Figure 2 As shown in , the second locking ring 3 in the preferred embodiment is arranged on the side of the first locking ring 2 away from the fixing ring 1, and a plurality of positioning holes 33 are arranged on the second locking ring 3, and the plurality of positioning holes 33 are unevenly distributed along the circumference of the second locking ring 3, and the plurality of positioning holes 33 are in a one-to-one correspondence with the subdivided key grooves 22 on the first locking ring 2, and the subdivided key grooves 22 and the positioning holes 33 in each group are spaced at a certain angle, that is, when the positioning holes 33 in one group are aligned with the subdivided key grooves 22, the positioning holes 33 and the subdivided key grooves 22 in other groups form a certain angle, and the angle formed by each group is different in size, and the angles of different sizes form a plurality of subdivision angles, so that the second locking ring 3 rotates relative to the first locking ring 2 at different subdivision angles, and the positioning holes 33 and the subdivided key grooves 22 in each group are aligned in sequence.

[0046] It can be understood that when the number of subdivided keyways 22 is n and they are evenly arranged along the annular direction, the n subdivided keyways 22 evenly divide the end surface circumference of the first locking ring 2 into n parts, and the angle of each part is 360° / n, that is, the angle between two adjacent subdivided keyways 22 is 360° / n. Since the subdivided angle in the present invention is a further refinement of the initial angle formed by the keyway cooperation on the fixing ring 1, the angle interval of 360° / m on the fixing ring 1 is further subdivided into n parts, and preferably subdivided at equal intervals, then the subdivided angle interval is 360° / mn. The multiple subdivided keyways 22 and the positioning holes 33 are numbered in sequence, and the alignment of the first subdivided keyway 22 and the first positioning hole 33 is taken as the initial position, that is, the subdivided angle at the initial position is zero, then the angle required to rotate when the jth subdivided keyway 22 and the jth positioning hole 33 are aligned is set to 360°(j-1) / mn.

[0047] Correspondingly, when the positioning hole 33 is aligned with the corresponding subdivided key groove 22, the first locking ring 2 and the second locking ring 3 are circumferentially positioned and locked by the positioning key 4 being sequentially inserted into the positioning hole 33 and the subdivided key groove 22.

[0048] It can be understood that the cooperation between the initial key 21 on the first locking ring 2 and the corresponding initial key groove 12 on the fixing ring 1 can determine an initial angle of 360°(i-1) / m, and the positioning hole 33 on the second locking ring 3 and the corresponding subdivision key groove 22 on the first locking ring 2 can determine a subdivision angle of 360°(j-1) / mn, and the final adjustment angle is obtained by adding the initial angle and the subdivision angle, so the final adjustment angle is 360°(i-1) / m+360°(j-1) / mn, thereby realizing more precise angle adjustment of the device.

[0049] Preferably, a protrusion 23 is provided on the ring side of the first locking ring 2 corresponding to the first subdivided keyway 22, and first recesses 24 are provided corresponding to the other subdivided keyways 22, so that the protrusion 23 and the first recesses 24 can be used for observation and alignment during angle adjustment.

[0050] At the same time, a lug 31 is provided on the outer ring side of the second locking ring 3 corresponding to the first positioning hole 33, and a second recess 32 is provided corresponding to the other positioning holes 33. In actual use, when the lug 31 on the second locking ring 3 is aligned with the protrusion 23 on the first locking ring 2, the first positioning hole 33 is aligned with the first subdivided keyway 22, and the subdivided angle is zero; the second locking ring 3 rotates counterclockwise so that the second recess 32 on the second locking ring 3 in each group is aligned with the first recess 24 on the first locking ring 2 in sequence, and the positioning holes 33 in each group are aligned with the corresponding subdivided keyway 22 in sequence, and each subdivided angle is reached in sequence, and then when adjusting the angle, the corresponding subdivided angle is determined by observing the alignment of the protrusion 23 and the lug 31, the first recess 24 and the second recess 32.

[0051] Preferably, a boss 36 is provided on the end face of the second locking ring 3 close to one end of the first locking ring 2, and a notch 25 for accommodating the boss 36 is provided on the end face of the first locking ring 2 at which the subdivision key groove 22 is provided, and the boss 36 can rotate within the notch 25 by a certain angle to limit the angular range of rotation of the second locking ring 3 by the angle, so as to avoid excessive adjustment of the subdivision angle due to operational errors.

[0052] Preferably, the maximum angle θ at which the boss 36 can rotate in the notch 25 is:

[0053] θ>360°(n-1) / mn,

[0054] That is, the maximum angle θ of the boss 36 that can rotate in the notch 25 is greater than the maximum adjustable subdivision angle so as not to affect the angle adjustment of the second locking ring 3 .

[0055] Further preferably, the maximum angle θ at which the boss 36 can rotate in the notch 25 is:

[0056] 360°(n-1) / mn<θ<360° / m,

[0057] That is, the maximum angle θ of the boss 36 that can rotate in the notch 25 is greater than the maximum adjustable subdivision angle and less than the minimum adjustable initial angle, thereby limiting the rotatable range of the second locking ring 3 to the minimum initial angle.

[0058] Furthermore, an external thread is provided at one end of the connector 6 close to the second locking ring 3, which passes through the second locking ring 3, the second locking ring 3 and the fixing ring 1 in sequence, and is screwed into the piston 7 to be threadedly connected with the piston 7; at the same time, at least one elongated locking key groove 61 is provided on the outer peripheral wall of the connector 6 along the axial extension, and at least one locking key 34 is correspondingly provided on the inner ring side of the second locking ring 3, so as to realize the circumferential locking between the second locking ring 3 and the connector 6 through the key-groove cooperation.

[0059] like Figure 3 As shown in the figure, the fixed key 11 cooperates with the fixed key slot 71, the initial key slot 12 cooperates with the initial key 21 corresponding to the initial angle, the subdivided key slot 22 corresponding to the subdivided angle cooperates with the positioning hole 33, the locking key 34 cooperates with the locking key slot 61, and the sum of the angles adjusted by the first locking ring 2 and the second locking ring 3 is the rotation angle of the joint 6 relative to the piston 7, thereby realizing the angle adjustment of the joint 6 relative to the piston 7. Accordingly, since the joint 6 has threads, the joint 6 can move a corresponding length in the axial direction after rotating a certain angle, so the fine adjustment of the zero position length of the actuator can be realized.

[0060] Furthermore, the locking member is used to lock the fixing ring 1, the first locking ring 2 and the second locking ring 3 after the angle adjustment to prevent them from sliding along the joint 6, causing each set of keys to fall out of the key slots and the angle adjustment to fail.

[0061] Preferably, the locking member includes a nut 5, which is arranged on the side of the second locking ring 3 away from the first locking ring 2 and is passed through the joint 6 to tighten and lock the end side of the second locking ring 3; at the same time, a first safety hole 35 is provided on the second locking ring 3, and a second safety hole 51 is provided on the nut 5, so that the nut 5 and the second locking ring 3 can be fixed together by passing a safety wire through the first safety hole 35 and the second safety hole 51 in sequence to prevent the nut 5 from rotating, thereby realizing the locking of the device to adjust the angle.

[0062] The actuator adjustment locking device in the present invention has a simple structure, is convenient to adjust and easy to operate, and can achieve fine angle division through the servo angle adjustment structure. During the zero adjustment process, the servo does not need to be disassembled to achieve fine zero position adjustment, and has good application prospects and promotion value.

[0063] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An actuator adjustment locking device, characterized in that: It includes a fixing ring, a first locking ring, a second locking ring, a locking member and a joint; One end surface of the fixing ring is provided with a fixing key that can be circumferentially fixed with the piston, and the other end surface is provided with a plurality of initial key grooves evenly arranged along the circumferential direction; The first locking ring is arranged on a side of the fixing ring away from the piston, and an initial key matching the initial key slot is arranged on an end surface of one end of the first locking ring, so that the initial angle of the first locking ring relative to the fixing ring can be adjusted by matching the initial key with each initial key slot; A plurality of subdivided key grooves are arranged along the annular direction on the end surface of the first locking ring facing away from the fixing ring; The second locking ring is arranged on a side of the first locking ring away from the fixing ring, and a plurality of positioning holes non-uniformly distributed along the circumferential direction are arranged on the second locking ring, the plurality of positioning holes and the plurality of subdivided key grooves are arranged in a one-to-one correspondence and are spaced at a certain angle, the second locking ring rotates at different subdivided angles, the positioning holes and the subdivided key grooves in each group are aligned in sequence; the positioning keys are sequentially inserted into the aligned positioning holes and the subdivided key grooves, and the second locking ring and the first locking ring are circumferentially locked; The locking member is used to lock the fixing ring, the first locking ring and the second locking ring after the angles are adjusted; The joint is circumferentially locked with the second locking ring, and one end of the joint passes through the second locking ring, the first locking ring and the fixing ring in sequence and is threadedly connected with the piston.

2. The actuator adjustment locking device according to claim 1, characterized in that: The initial key slots are set to m and are numbered in sequence along the circumferential direction. When the initial key matches the i-th initial key slot, the initial angle α of the first locking ring rotation is i It is 360°(i-1) / m.

3. The actuator adjustment locking device according to claim 2, characterized in that: The subdivided key grooves are evenly arranged in the circumferential direction along the end surface of the first locking ring, and are numbered in sequence along the circumferential direction. When the jth subdivided key groove is aligned with the corresponding positioning hole, the subdivided angle β of the second locking ring rotation is j It is 360°(j-1) / mn.

4. The actuator adjustment locking device according to claim 1, characterized in that: A protrusion is set on the outer ring side of the first locking ring corresponding to the first subdivided keyway, and first recesses are set respectively corresponding to the other subdivided keyways; a support ear is set on the outer ring side of the second locking ring corresponding to the first positioning hole, and second recesses are set respectively corresponding to the other positioning holes, so as to observe and align when adjusting the angle.

5. The actuator adjustment locking device according to claim 1, characterized in that: A locking key is provided on the inner ring side of the second locking ring, and a locking key groove is axially extended at one end of the joint close to the second locking ring, so as to achieve circumferential locking between the second locking ring and the joint through key-groove cooperation, and the locking key can slide axially in the locking key groove.

6. The actuator adjustment locking device according to claim 1, characterized in that: The locking member comprises a nut, which is arranged on a side of the second locking ring facing away from the first locking ring and is passed through the joint to tighten and lock the end side of the second locking ring.

7. The actuator adjustment locking device according to claim 6, characterized in that: The second locking ring is also provided with a first safety hole, and the nut is provided with a second safety hole, so that a safety wire can pass through the first safety hole and the second safety hole in sequence to fix the second locking ring and the nut in connection.

8. The actuator adjustment locking device according to any one of claims 1 to 7, characterized in that: A boss is arranged on the end face of the second locking ring close to one end of the first locking ring, and a notch for accommodating the boss is also arranged on the end face of the first locking ring where the subdivided keyway is arranged, and the boss can rotate within the notch by a certain angle to limit the rotation range of the second locking ring.

9. The actuator adjustment locking device according to claim 8, characterized in that: The maximum angle θ that the boss can rotate in the notch is: θ>360°(n-1) / mn.

10. The actuator adjustment locking device according to claim 1, characterized in that: The ring side of the fixing ring is also provided with two flattened portions opposite to each other, so as to facilitate the use of a wrench to rotate the fixing ring.

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