CN116255271A - Mechanical locking device, assembling method and servo mechanism - Google Patents
Mechanical locking device, assembling method and servo mechanism Download PDFInfo
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- CN116255271A CN116255271A CN202211712162.9A CN202211712162A CN116255271A CN 116255271 A CN116255271 A CN 116255271A CN 202211712162 A CN202211712162 A CN 202211712162A CN 116255271 A CN116255271 A CN 116255271A
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- internal thread
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/78—Other construction of jet pipes
- F02K1/80—Couplings or connections
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Abstract
The invention provides a mechanical locking device, an assembling method and a servo mechanism. The invention can meet the zero position adjustment, simultaneously adapt to the condition of large load, improve the reliability, and has stable and even structural stress, no gap and uncomplicated disassembly and assembly.
Description
Technical Field
The invention relates to a mechanical locking device, an assembly method and a servo mechanism, and belongs to the technical field of mechanical locking.
Background
Along with the continuous breakthrough of the power telex technology, the high-power linear electromechanical servo mechanism is more and more widely applied to the high-thrust liquid rocket engine for thrust vector control. The current rocket mostly adopts modes of horizontal assembly, horizontal test and horizontal transfer, and in order to ensure that the liquid rocket engine nozzle is in a horizontal state, an electromechanical servo mechanism is required to overcome the gravity load of the engine nozzle and keep the gravity load at a zero length, and particularly, the rocket nozzle for a larger thrust engine is required. Compared with the traditional electrohydraulic servo mechanism, the electromechanical servo mechanism has no self-locking capability due to the difference of transmission principles. Thus, in order to achieve the zero-hold function, additional locking means are required.
The existing mechanical locking device of a servo mechanism, such as a mechanical zero lock of an actuator, the actuator and a conveying device, adopts two semicircular locking parts to encircle an output shaft assembly and realizes axial locking through a single-side length adjusting screw cylinder. The unilateral cantilever structure is unevenly stressed, so that the clamping stagnation phenomenon is easy to occur during disassembly. For another example, in the patent "a quick-dismantling adjustable zero locking mechanism", the zero adjustment is realized by adopting the telescopic fit of two clamping bands, but because two fixed lugs on the adjusting clamping band are positioned on the same semi-cylindrical main body, the other semi-cylindrical main body of the adjusting clamping band cannot be clasped, and a movable gap exists, so that the zero position is kept unreliable. Meanwhile, both patents adopt a load bearing mode of bypass small screw rod stress, and are difficult to adapt to the condition of large load.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a mechanical locking device with large load and adjustable zero position, an assembly method and a servo mechanism.
The technical solution of the invention is as follows: a mechanical locking device comprises a first locking sleeve assembly and a second locking sleeve assembly, wherein the first locking sleeve assembly and the second locking sleeve assembly are connected through threads;
the first locking sleeve assembly comprises a first internal thread encircling barrel and a second internal thread encircling barrel, one ends of the first internal thread encircling barrel and the second internal thread encircling barrel are respectively provided with an internal thread, and the internal threads form complete internal threads in the circumferential direction after the first internal thread encircling barrel and the second internal thread encircling barrel are connected;
the second locking sleeve assembly comprises a first external thread encircling barrel and a second external thread encircling barrel, one ends of the first external thread encircling barrel and the second external thread encircling barrel are respectively provided with external threads, and the first external thread encircling barrel and the second external thread encircling barrel are connected to form complete external threads in the circumferential direction;
before the first internal thread embracing cylinder and the second internal thread embracing cylinder are connected, the external threads of the second locking sleeve assembly stretch out and draw back in the inner circumference of the first internal thread embracing cylinder, and after a zero position is determined, the first internal thread embracing cylinder and the second internal thread embracing cylinder are connected and locked.
A servo mechanism employing a mechanical locking device as described in any one of the preceding claims.
A method of assembling a mechanical locking device according to any one of the preceding claims, comprising the steps of:
the first step, the second locking sleeve component is fixedly installed on a rotating piece in a surrounding mode;
and in the second step, one end of the first internal thread encircling barrel is clamped on the fixing piece, the internal thread at the other end is meshed with the external thread of the second locking sleeve assembly, the external thread of the second locking sleeve assembly is driven to move in a matched mode with the internal thread of the first internal thread encircling barrel through the rotating piece, the first internal thread encircling barrel is positioned at a zero position, the second internal thread encircling barrel and the first internal thread encircling barrel are fixedly connected through the first connecting and fixing lugs, and the first locking sleeve assembly is formed to encircle on the second locking sleeve assembly.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention can meet the zero position adjustment, simultaneously adapt to the condition of large load, improve the reliability, and has stable and even structural stress, no gap and uncomplicated disassembly and assembly;
(2) The invention has large bearing capacity, the nominal diameter of the connecting screw thread adopted by the two groups of locking sleeves is larger than the diameter of the output rod of the servo mechanism, and compared with the small screw rod stress in the prior art, the invention improves the bearing capacity;
(3) The invention has high reliability, meets the same load condition under the same installation space, and obviously improves the safety margin due to the characteristic of large threaded connection of the device, while the prior art needs larger space to design larger threads if the same safety margin is to be realized;
(4) The whole device is coaxially arranged with the servo mechanism, the structure is stable and uniform in stress, and the damage and the collapse of the structure are not easy to occur;
(5) The zero-position length of the invention is kept reliable, no gap exists in the structure, and no risk of detachment jamming exists.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic illustration of a mechanical locking device provided in accordance with one embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a mechanical locking device provided in accordance with one embodiment of the present invention;
FIG. 3 is a schematic view of an internal threaded encircling barrel of a mechanical locking device according to an embodiment of the present invention, a being a mating internal threaded encircling barrel, b being a reference internal threaded encircling barrel;
FIG. 4 is a schematic view of an external thread encircling barrel of a mechanical locking device according to an embodiment of the present invention, a is a mating external thread encircling barrel, b is a reference external thread encircling barrel;
fig. 5 to 9 are schematic views illustrating the use of a mechanical locking device according to an embodiment of the present invention.
Wherein the above figures include the following reference numerals:
01 is a first locking sleeve assembly; 02 is a second locking sleeve assembly; 1 is a reference internal spiral ring holding cylinder; 101 is a snap ring; 102 is an internal thread; 103 is a connecting and fixing support lug; 104 is a threaded through hole; 105 is a locating pin hole; 2 is a holding cylinder matched with the internal spiral ring; 203 is a connecting and fixing support lug; 204 are cylindrical through holes; 205 is a locating pin through hole; 206 is a threaded through hole; 3 is a reference external spiral encircling cylinder; 301 is a snap ring; 302 is an external thread; 303 is a connecting and fixing support lug; 304 is a threaded through hole; 35 is a locating pin hole; 4 is a encircling cylinder matched with the outer screw; 403 is a connecting and fixing support lug; 404 is a cylindrical through hole; reference numeral 405 denotes a positioning pin through hole; 406 is a threaded through hole; 5 is a screw; 6 is a locating pin; 7 is a servo mechanism housing; 8 is an output rod.
Detailed Description
The invention provides a mechanical locking device which comprises a first locking sleeve assembly and a second locking sleeve assembly, wherein the first locking sleeve assembly and the second locking sleeve assembly are connected through threads, the second locking sleeve assembly axially stretches and contracts in the first locking sleeve assembly, and the locking is performed after a zero position is determined.
The first locking sleeve assembly comprises two independent semi-cylindrical internal thread encircling barrels, the first encircling barrel is a reference internal thread encircling barrel, the second encircling barrel is a matched internal thread encircling barrel, the internal structures of the first internal thread encircling barrel and the second internal thread encircling barrel are identical, one end of the first internal thread encircling barrel is provided with a clamping ring, and the other end of the first internal thread encircling barrel is provided with an internal thread.
Further, the first internal thread embraces the barrel lateral surface and sets up first connection fixed journal stirrup respectively symmetry, makes first, second internal thread embraces barrel fixed connection through first connection fixed journal stirrup, and the internal thread circumference of both constitutes complete screw thread.
Further, the first connecting fixing lugs are positioned through pin holes and connected through screws.
The second locking sleeve assembly comprises two independent semi-cylindrical external thread encircling barrels, wherein the first external thread encircling barrel is a reference external thread encircling barrel, the second external thread encircling barrel is a matched external thread encircling barrel, the internal structures of the first external thread encircling barrel and the second external thread encircling barrel are identical, one end of the first external thread encircling barrel is provided with a clamping ring, and the other end of the first external thread encircling barrel is provided with an external thread.
Further, the first external thread embraces the external side of a section of thick bamboo and sets up the fixed journal stirrup of second connection respectively symmetry, makes first, second external thread embraces a section of thick bamboo fixed connection through the fixed journal stirrup of second connection, and the external thread circumference of both constitutes complete screw thread.
Further, the second connection fixing lugs are positioned through pin holes and connected through screws.
Before the first internal thread encircling barrel and the second internal thread encircling barrel are connected, the first internal thread encircling barrel and the second internal thread encircling barrel are connected and locked after zero positions are determined through the external threads of the second locking sleeve assembly stretching in the inner circumference of the first internal thread encircling barrel.
Further, the first locking sleeve assembly is connected with the fixing piece through the clamping ring, the second locking sleeve assembly is connected with the rotating piece through the clamping ring, and the second locking sleeve assembly axially stretches out and draws back in the first locking sleeve assembly, so that zero position adjustment between the fixing piece and the rotating piece is achieved.
Preferably, the thread length of the first locking sleeve assembly is greater than the thread length of the second locking sleeve assembly, and the difference between the two lengths is not less than the zero length variation range between the fixed member and the rotating member.
Preferably, when the zero position length between the fixed part and the rotating part is in the limit position, the effective screwing length of the threaded connection between the first locking sleeve assembly and the second locking sleeve assembly is not less than 6-7 times of the pitch of the connecting threads adopted.
Preferably, the second fixed connection lugs on the second locking sleeve assembly should not interfere with the first locking sleeve assembly when the zero length between the fixed member and the rotatable member is at the shortest limit.
Preferably, the connection threads of the first and second locking sleeve assemblies should avoid the use of fine threads.
The invention also provides a servo mechanism adopting the mechanical locking device.
Further, the mechanical locking device is arranged between the shell of the servo mechanism and the output rod, the shell of the servo mechanism is matched with the clamping rings of the first locking sleeve assembly and the second locking sleeve assembly through clamping grooves, one end of the first locking sleeve assembly is connected with the shell of the servo mechanism through the clamping rings, and one end of the second locking sleeve assembly is connected with the output rod of the servo mechanism through the clamping rings.
The invention also provides an assembly method of the mechanical locking device, which is realized through the following steps:
and in the first step, the second locking sleeve assembly is fixedly installed on the rotating piece in a surrounding mode.
In the step, the reference external thread encircling barrel is clamped on the rotating piece, and the second locking sleeve assembly is formed by fixedly connecting the matched external thread encircling barrel with the reference external thread encircling barrel through the second connecting and fixing support lugs.
And secondly, clamping one end of the reference internal thread encircling barrel on a fixing piece, and engaging the internal thread at the other end of the reference internal thread with the external thread of the second locking sleeve assembly, wherein the external thread of the second locking sleeve assembly is driven to move in a matched manner with the internal thread of the reference internal thread encircling barrel through a rotating piece, so that the reference internal thread encircling barrel is positioned at a zero position, and the matched internal thread encircling barrel and the reference internal thread encircling barrel are fixedly connected through a first connecting and fixing lug to form a first locking sleeve assembly encircling on the second locking sleeve assembly.
Further, the assembly method may further comprise a disassembly step,
third, the disassembly is carried out,
the set screws on the first locking sleeve assembly and the second locking sleeve assembly are unscrewed.
Furthermore, in the first step and the second step, the positioning pin is in transition or interference fit with the positioning pin hole on the connecting and fixing support lug of the internal thread and the external thread encircling barrel of the reference, and the glue is coated and is loose-proof.
Furthermore, in the first step and the second step, the locating pin through hole and the locating pin clearance fit on the connecting and fixing support lug of the internal thread encircling barrel are matched, so that the disassembly and the assembly are convenient.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
The present invention will be described in detail with reference to specific examples and drawings.
As shown in fig. 1 and 2, the present invention provides a mechanical locking device, installed between a servo housing 7 and an output rod 8, comprising a first locking sleeve assembly 01 and a second locking sleeve assembly 02. One end of the first locking sleeve assembly 01 is connected with the servo mechanism shell 7 through a clamping groove, one end of the second locking sleeve assembly 02 is connected with the output rod 8 through a clamping groove, and the two groups of locking sleeve assemblies are connected through threads. Wherein the second locking sleeve assembly 02 can axially telescope inside the first locking sleeve assembly 01.
As shown in fig. 3, the first locking sleeve assembly 01 comprises two independent semi-cylindrical encircling barrels, which are divided into a reference internal thread encircling barrel 1 and a matched internal thread encircling barrel 2. The standard internal thread embraces the inside one end of section of thick bamboo 1 and is provided with snap ring 101, and the other end is provided with internal thread 102. The internal structure of the encircling cylinder 2 matched with the internal thread is completely the same as that of the encircling cylinder 1 with the reference internal thread. Two connecting and fixing lugs 103 are symmetrically arranged at the middle positions of the two sides of the outer cylindrical surface of the reference internal thread encircling cylinder 1, and two connecting and fixing lugs 203 are symmetrically arranged at the middle positions of the two sides of the outer cylindrical surface of the reference internal thread encircling cylinder 2. The connecting and fixing support lug 103 on the reference internal thread encircling barrel 1 is provided with a threaded through hole 104 and a positioning pin hole 105, and the connecting and fixing support lug 203 on the matching internal thread encircling barrel 2 is provided with a cylindrical through hole 204, a positioning pin through hole 205 and a threaded through hole 206. The two independent semi-cylindrical encircling barrels have the same structure and size except for the structural difference on the connecting and fixing lugs.
The reference internal thread encircling barrel 1 and the matched internal thread encircling barrel 2 are assembled together through a locating pin 6 and fastened through a screw 5. After the two are correctly installed to form the first locking sleeve assembly 01, the clamping rings in the two parts are combined into a complete clamping ring, and the threads in the two parts form a complete internal thread.
As shown in fig. 4, the second locking sleeve assembly 02 includes two independent semi-cylindrical encircling barrels, which are divided into a reference external thread encircling barrel 3 and a matching external thread encircling barrel 4. The standard external thread embraces the inside one end of section of thick bamboo 3 and is provided with snap ring 301, and the other end is provided with external thread 302. The internal structure of the encircling cylinder 4 matched with the external threads is completely the same as that of the encircling cylinder 3 with the reference external threads. Two connecting and fixing lugs 303 are symmetrically arranged at the end parts of the two sides of the cylindrical surface of the reference external thread encircling cylinder outside 3, and two connecting and fixing lugs 403 are symmetrically arranged at the end parts of the two sides of the cylindrical surface outside the reference external thread encircling cylinder 4. The connecting and fixing support lug 303 on the reference external thread encircling barrel 3 is provided with a threaded through hole 304 and a positioning pin hole 305, and the connecting and fixing support lug 403 on the matching external thread encircling barrel 4 is provided with a cylindrical through hole 404, a positioning pin through hole 405 and a threaded through hole 406. The two independent semi-cylindrical encircling barrels have the same structure and size except for the structural difference on the connecting and fixing lugs.
The reference external thread encircling barrel 3 and the matched external thread encircling barrel 4 are assembled together through a locating pin 6 and fastened through a screw 5. After the two are correctly installed to form the second locking sleeve assembly 02, the clamping rings on the second locking sleeve assembly are combined into a complete clamping ring, and the threads on the second locking sleeve assembly form a complete external thread.
According to one embodiment of the invention, the length of the threads of the internal thread encircling barrel is larger than that of the external thread encircling barrel, and the difference between the two lengths is not smaller than the variation range of the zero length of the servo mechanism.
According to one embodiment of the invention, when the zero position length of the servo mechanism is in the limit position, the effective screwing length of the two groups of locking sleeve threads is ensured to be not less than 6-7 times of the pitch of the connecting threads adopted.
According to one embodiment of the invention, the fixed connection lugs on the externally threaded encircling barrel should not interfere with the internally threaded encircling barrel when the zero length of the servo mechanism is at the shortest limit position.
According to one embodiment of the present invention, the use of fine threads for the two sets of locking sleeve connection threads should be avoided.
The assembly of the mechanical locking device of the invention comprises the following steps:
step one, as shown in fig. 5, two positioning pins 6 are installed in positioning pin holes 305 which are positioned on the reference external thread encircling barrel 3 and are connected with fixing lugs 303, and then the reference external thread encircling barrel 3 is embedded into a clamping groove of the output rod 8 through a clamping ring 301, so that the installation of the reference external thread encircling barrel 3 is realized.
Step two, the external thread encircling cylinder 4 is assembled with the reference external thread encircling cylinder 3 through the locating pin through hole 405 on the connecting and fixing support lug 403, and the two are fastened through the two set screws 5 to form a second locking sleeve assembly 02 together, as shown in fig. 6.
Step three, as shown in fig. 6, two positioning pins 6 are installed in positioning pin holes 105 which are positioned on the reference internal thread encircling cylinder 1 and connected with the fixing lugs 103, then one end of the reference internal thread encircling cylinder 1 is firstly embedded into a clamping groove of the servo mechanism shell 7 through a clamping ring 101, and the other end of the reference internal thread encircling cylinder is naturally engaged and assembled on external threads of the second locking sleeve assembly 02 through threaded connection.
As shown in fig. 9, in order to adapt to different zero lengths of the servo mechanism, in the third step, the reference internal thread is rotated around the axis of the output rod 8 to encircle the barrel 1, so as to realize the natural correct engagement connection between the internal thread 102 on the reference internal thread and the external thread on the second locking sleeve component 02, and realize zero adjustment.
Step four, as shown in fig. 7, the matching internal thread encircling cylinder 2 is assembled with the reference internal thread encircling cylinder 1 through a locating pin through hole 205 positioned on the connecting and fixing support lug 203, and the matching internal thread encircling cylinder and the reference internal thread encircling cylinder are fastened through two set screws 5 to jointly form a first locking sleeve assembly 01, and the mechanical locking device is assembled and used, as shown in fig. 8.
And fifthly, during disassembly, four fastening screws 5 positioned on the first locking sleeve assembly 01 and the second locking sleeve assembly 02 are preferentially screwed out, and then appropriate screws are screwed into threaded through holes positioned on the connecting and fixing lugs of the matched internal and external threaded encircling barrels to assist the separation of the connecting and fixing lugs from the reference internal and external threaded encircling barrels.
In the first step and the third step, the two positioning pins are in transition or interference fit with the positioning pin holes on the connecting and fixing lugs of the internal thread and the external thread encircling barrel of the reference, and are glued and loose-proof.
In the second step and the fourth step, the positioning pin through holes matched with the inner thread and the outer thread encircling barrel and connected with the fixed support lugs are in clearance fit with the positioning pins, so that the disassembly and the assembly are convenient.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The invention is not described in detail in a manner known to those skilled in the art.
Claims (14)
1. A mechanical locking device, characterized in that: the locking sleeve comprises a first locking sleeve assembly and a second locking sleeve assembly, wherein the first locking sleeve assembly and the second locking sleeve assembly are connected through threads;
the first locking sleeve assembly comprises a first internal thread encircling barrel and a second internal thread encircling barrel, one ends of the first internal thread encircling barrel and the second internal thread encircling barrel are respectively provided with an internal thread, and the internal threads form complete internal threads in the circumferential direction after the first internal thread encircling barrel and the second internal thread encircling barrel are connected;
the second locking sleeve assembly comprises a first external thread encircling barrel and a second external thread encircling barrel, one ends of the first external thread encircling barrel and the second external thread encircling barrel are respectively provided with external threads, and the first external thread encircling barrel and the second external thread encircling barrel are connected to form complete external threads in the circumferential direction;
before the first internal thread embracing cylinder and the second internal thread embracing cylinder are connected, the external threads of the second locking sleeve assembly stretch out and draw back in the inner circumference of the first internal thread embracing cylinder, and after a zero position is determined, the first internal thread embracing cylinder and the second internal thread embracing cylinder are connected and locked.
2. A mechanical locking device according to claim 1, wherein: the first internal thread encircling barrel and the second internal thread encircling barrel are semi-cylindrical; the first external thread encircling barrel and the second external thread encircling barrel are semi-cylindrical.
3. A mechanical locking device according to claim 2, wherein: the outer side surfaces of the first internal thread encircling barrel and the second internal thread encircling barrel are symmetrically provided with first connecting and fixing lugs respectively, and the first internal thread encircling barrel and the second internal thread encircling barrel are fixedly connected through the first connecting and fixing lugs; the outer side surfaces of the first external thread encircling barrel and the second external thread encircling barrel are respectively symmetrically provided with a second connecting and fixing support lug, and the first external thread encircling barrel and the second external thread encircling barrel are fixedly connected through the second connecting and fixing support lug.
4. A mechanical locking device according to claim 3, characterized in that: the first and second internal threads encircling the cylinder and the first and second external threads encircling the non-threaded ends of the cylinder are provided with clamping rings.
5. A mechanical locking device according to claim 4, wherein: the first locking sleeve assembly is connected with the fixing piece through the clamping ring, the second locking sleeve assembly is connected with the rotating piece through the clamping ring, and the second locking sleeve assembly axially stretches out and draws back in the first locking sleeve assembly, so that zero position adjustment between the fixing piece and the rotating piece is realized.
6. A mechanical locking device according to claim 5, wherein: the thread length of the first locking sleeve component is larger than that of the second locking sleeve component, and the difference between the thread length and the thread length is not smaller than the zero length change range between the fixed piece and the rotating piece.
7. A mechanical locking device according to claim 6, wherein: when the zero length between the fixed part and the rotating part is in the limit position, the effective screwing length of the threaded connection between the first locking sleeve assembly and the second locking sleeve assembly is not less than 6-7 times of the pitch of the connecting threads adopted.
8. A mechanical locking device according to claim 7, wherein: when the zero length between the fixed part and the rotating part is at the shortest limit position, the second fixed connection lugs on the second locking sleeve assembly are not interfered with the first locking sleeve assembly.
9. A servomechanism employing the mechanical locking device of any of claims 1-8.
10. A servomechanism according to claim 9, in which: the mechanical locking device is arranged between a shell and an output rod of the servo mechanism, clamping grooves are formed in the shell and the output rod of the servo mechanism and matched with clamping rings of the first locking sleeve assembly and the second locking sleeve assembly, one end of the first locking sleeve assembly is connected with the shell of the servo mechanism through the clamping grooves of the clamping rings, and one end of the second locking sleeve assembly is connected with the output rod of the servo mechanism through the clamping grooves of the clamping rings.
11. A method of assembling a mechanical locking device according to any one of claims 1 to 8, comprising the steps of:
the first step, the second locking sleeve component is fixedly installed on a rotating piece in a surrounding mode;
and in the second step, one end of the first internal thread encircling barrel is clamped on the fixing piece, the internal thread at the other end is meshed with the external thread of the second locking sleeve assembly, the external thread of the second locking sleeve assembly is driven to move in a matched mode with the internal thread of the first internal thread encircling barrel through the rotating piece, the first internal thread encircling barrel is positioned at a zero position, the second internal thread encircling barrel and the first internal thread encircling barrel are fixedly connected through the first connecting and fixing lugs, and the first locking sleeve assembly is formed to encircle on the second locking sleeve assembly.
12. A method of assembly according to claim 11, wherein: in the first step, the first external thread encircling barrel is clamped on the rotating piece, and the second external thread encircling barrel is fixedly connected with the first external thread encircling barrel through the second connecting and fixing support lugs to form a second locking sleeve assembly encircling the rotating piece.
13. A method of assembly according to claim 12, wherein: the first connecting and fixing lugs and the second connecting and fixing lugs in the first step and the second step are positioned through pin holes and connected through screws.
14. A method of assembly according to claim 13, wherein: the positioning pin in the first step and the second step is in transition or interference fit with the positioning pin hole on the first internal thread encircling barrel and the first external thread encircling barrel which are connected with the fixed supporting lugs, and is coated with glue and is loose-proof; and the second internal thread and the external thread encircle the locating pin through holes on the barrel connection fixing lugs and are in clearance fit with the locating pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211712162.9A CN116255271A (en) | 2022-12-30 | 2022-12-30 | Mechanical locking device, assembling method and servo mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211712162.9A CN116255271A (en) | 2022-12-30 | 2022-12-30 | Mechanical locking device, assembling method and servo mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116255271A true CN116255271A (en) | 2023-06-13 |
Family
ID=86687139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211712162.9A Pending CN116255271A (en) | 2022-12-30 | 2022-12-30 | Mechanical locking device, assembling method and servo mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116255271A (en) |
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2022
- 2022-12-30 CN CN202211712162.9A patent/CN116255271A/en active Pending
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