CN102980486A - Meshing clearance measuring device for bevel gear pair of central transmission casing of plane under loading - Google Patents
Meshing clearance measuring device for bevel gear pair of central transmission casing of plane under loading Download PDFInfo
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- CN102980486A CN102980486A CN2012105299097A CN201210529909A CN102980486A CN 102980486 A CN102980486 A CN 102980486A CN 2012105299097 A CN2012105299097 A CN 2012105299097A CN 201210529909 A CN201210529909 A CN 201210529909A CN 102980486 A CN102980486 A CN 102980486A
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Abstract
The invention discloses a meshing clearance measuring device for a bevel gear pair of a central transmission casing of a plane under loading. The meshing clearance measuring device mainly comprises a first measurer and a second measurer, wherein the first measurer is mounted on the casing, perpendicular to an end face direction of a driving bevel gear, and axially actuates the driving bevel gear; the second measurer is mounted on the casing, perpendicular to an end face direction of a driven bevel gear, and axially actuates the driven bevel gear; the first measurer and the second measurer both comprise housing frames, rod shafts capable of moving locally and axially relative to the housing frames and incapable of rotating, gear clamping mechanisms, axial inward pressing mechanisms, and axial outward pulling mechanisms; the gear clamping mechanisms are fixedly mounted on the rod shafts; the axial inward pressing mechanisms and the axial outward pulling mechanisms consist of springs, shaft sleeves fixed with the housing frames and spring seats for driving the gear clamping mechanisms to move axially; the rod shafts are sleeved with the springs; and nuts, the springs and the spring seats for forming the axial inward pressing mechanisms and the axial outward pulling mechanisms are arranged in opposite directions. The meshing clearance measuring device solves the problem that the meshing clearance measuring device for the bevel gears in the prior art cannot detect a meshing clearance under the loading.
Description
Technical field
The present invention relates to aircraft central transmission casing gear drive assembling measuring technique, particularly relate to and detect the interior bevel gear pair of central transmission casing at the device that is subjected to the back lash under the rated load power.
Background technology
Gear drive is a kind of type of belt drive indispensable in the mechanical drive, and the back lash of gear not only has influence on mechanically operated stationarity, but also have influence on control system, excesssive gap can cause control system to produce jitter phenomenon and reduce serviceable life, therefore, important gear drive all needed the back lash of detection of gear transmission before coming into operation.It all is to pass through measurement mechanism that the back lash of prior art is detected, a gear in the gear pair is fixed, then rotate another gear, the back lash value of gear driving pair is converted into the rotational angle value of moving gear, measure the gear driving pair back lash according to the rotational angle value of gear.Aircraft central transmission casing is the very important gear train of aircraft, part in the central transmission casing bears down in working order very large compressive load and draws load, bevel gear drive pair as central transmission casing vitals is born same load, the bevel gear drive pair differs greatly under the back lash under pulling force and the pressure-acting and off working state, the back lash of measuring by off working state, the duty that can not correctly reflect the bevel gear drive pair, the back lash that therefore correctly detects under the bevel gear drive subtask state is very important.But the gear drive back lash pick-up unit of employing prior art is can't measure the bevel gear drive pair in compressive load and the back lash value of drawing under the load.Therefore, production practices are badly in need of providing a kind of device that can detect back lash under the central transmission casing bevel gear pair load.
Summary of the invention
Present situation and deficiency for existing gear driving pair back lash measurement mechanism, purpose of the present invention aims to provide a kind of flexible to operation, back lash measurement mechanism under the aircraft central transmission casing bevel gear pair load that is easy to grasp, with the gear driving pair back lash measurement mechanism that solves prior art exist can't test load under the problem of back lash.
Back lash measurement mechanism under the aircraft central transmission casing bevel gear pair load provided by the invention, its structure mainly by comprise perpendicular to the gear face direction be installed on the casing axially start in the first measuring appliance of drive bevel gear and axially start in the second measuring appliance of driven wheel of differential, the formation of the first measuring appliance and the second measuring appliance comprises the shell frame respectively, but move non-rotatable bar axle with respect to shell frame localized axial, the gear clamping device, internal axial pressure mechanism and axial outer drawing mechanism, described gear clamping device is fixedly mounted on the bar axle, described internal axial pressure mechanism and axial outer drawing mechanism are by the spring that is nested with outside the bar axle, the axle sleeve that fixes with housing, be installed in the nut that acts on spring one end on the axle sleeve and act on the axially movable spring base formation of spring other end promotion gear clamping device by screw thread pair, consist of the nut of internal axial pressure mechanism and axial outer drawing mechanism, spring and spring base arrange opposite direction, and formation is exerted pressure to the gear clamping device or executed the effect of drawing.Preferably one of gear clamping device of the first measuring appliance and the second measuring appliance is designed to the resislient gear clamping device.
In order to solve better technical matters to be solved by this invention, the present invention also can further take following technical measures on the basis of technique scheme.Following every technical measures can be taked separately, also capable of being combined taking, even take in the lump.
In technique scheme, for the ease of determining to be applied to the compressive load of bevel gear drive pair by the measuring spring decrement or drawing load, the first measuring appliance and the second measuring appliance are designed with the latch that is used for fixing axle sleeve and bar axle relative position.Be designed with the groove of measuring spring decrement on the axle sleeve of formation internal axial pressure mechanism and axial outer drawing mechanism.Described latch acts on spring at nut to carry out must extracting in the decrement adjustment process, inserts before measuring and after adjusting, and sleeve and bar axle are fixed together.
In technique scheme, one of bar axle that consists of the first measuring appliance and the second measuring appliance is fixedly installed the dial framework that installs and measures table, design indication groove on the dial framework.
In technique scheme, rotate in nut rotation course of exerting pressure in order to prevent spring, the nut of drawing mechanism preferably connects with spring action by spring base in the internal axial pressure mechanism that consists of the first measuring appliance, the second measuring appliance and axially.
In technique scheme, for the simplification device structure, the axle sleeve of drawing mechanism is preferably the same sleeve that is fixed on the shell frame at the axle sleeve of the internal axial pressure mechanism that consists of the first measuring appliance, the second measuring appliance and axially.
In technique scheme, back lash measurement mechanism one-piece construction preferred design becomes, and the first measuring appliance is vertical the setting, and the second measuring appliance is for being horizontally disposed with, and the shell frame that consists of the second measuring appliance is placed on the ground by support.
In technique scheme, preferably the gear clamping device with the first measuring appliance is designed to the resislient gear clamping device, its structure can be by being fixedly mounted on the outer member that draws of first on the first bar axle, can be nested with axially slidably the first interior pressure member that acts in the first bar axle upper surface on the drive bevel gear cylinder inboard wall step surface and the fastening screw nut (22) that is installed on the first bar axle by screw thread pair consists of, described first outer draws member for having flexible thin-wall wimble barrel; the large end outer rim of thin-wall wimble barrel and drive bevel gear cylinder inboard wall are interference fit; the described first interior pressure member designs has telescopic pipe; described fastening screw nut end-acted in the end face of the first interior pressure member telescopic pipe, by rotating the fastening screw nut realization to the drive bevel gear resilient clamp.
In technique scheme, the spring base that consists of the first measuring appliance internal axial pressure mechanism and axial outer drawing mechanism is the spring seat structure that is positioned on the second pressure member telescopic pipe.
In technique scheme, preferably the gear clamping device with the second measuring appliance is designed to the rigid gear clamping device, by being installed in the second outer member that draws that the second bar axle upper surface and driven wheel of differential the inner be complementary, be fixedly mounted on the keeper on the second bar axle and be placed in the second interior pressure member that keeper upper surface and driven wheel of differential outer end be complementary by screw thread pair by fixed pin and consist of, realize the clamping of driven wheel of differential rigidity by rotating the second interior pressure member, described keeper connects with driven wheel of differential by key connecting is secondary, connects with the second shell frame by moving axially non-rotatable pin draw bail.
In technique scheme, carry out the load adjustment for the ease of rotating nut, second shell that preferably will consist of the second measuring appliance sets up counts the wide open shell frame in two sides.
The present invention has also taked some other technical measures.
The back lash measurement mechanism is compared with the gear backlash measuring tool of prior art under the aircraft central transmission casing bevel gear pair load provided by the invention, has following very outstanding technical characterstic and effect:
1, back lash of the present invention measurement mechanism, structurally simulated the duty of aircraft central transmission casing bevel gear pair, can be simultaneously to drive bevel gear with driven wheel of differential is exerted pressure and pulling force, can measure exactly the back lash of bevel gear pair under in working order, for the correct duty of estimating aircraft central transmission casing bevel gear pair provides foundation.
2, load simulated simple in structure.Back lash of the present invention measurement mechanism, be by by the axle sleeve that is nested with spring outside the bar axle, fix with housing, by screw thread pair be installed in internal axial pressure mechanism that spring base that axle sleeve acts on exert pressure nut and the axial limiting of spring one end consists of and axially outside drawing mechanism, realization applies compressive load or draws load transmission casing bevel gear pair, adjust the size of imposed load by exert pressure decrement that nut adjusts spring of rotation, load simulated simple in structure.
3, apply specified compressive load or draw load operation simple.Measurement mechanism of the present invention, thereby its internal axial pressure mechanism and axially outer drawing mechanism all between gear pair and casing, produces acting force by spring-compressed and with the reacting force realization gear pair is applied pulling force and pressure, can be by the exert pressure size of decrement adjustment imposed load of nut adjustment spring of rotation.And consist of internal axial pressure mechanism and axially be designed with the groove of measuring spring compression displacement amount on the nut of exerting pressure of outer drawing mechanism, namely know the decrement of spring with respect to the distance of benchmark by measuring groove, and then know the load that puts on central transmission casing bevel gear pair, easy to operate.
4, reasonable in design.The drive bevel gear cylindrical shell size of central transmission casing bevel gear pair is large and barrel wall is thin, and the present invention is designed to the resislient gear clamping device with the clamping device of drive bevel gear, and is fastening with tensioner member location, solves the problem of application of force difficulty.Axially start is equipped with stop pin 16 with the rotation of restriction engaged wheel on the second measuring appliance of driven wheel of differential, rotate drive bevel gear during measurement, gap width is converted into the rotational value of the dial framework 18 on the second measuring appliance, can directly plays table and detect, the gap width that records is reliable, accurately.
The present invention is improvement and the development to the gear pair back lash measurement mechanism of prior art, for production practices provide a kind of flexible to operation, grasp the little gear pair back lash measuring tool of difficulty, the gear pair back lash measurement mechanism that has solved prior art can't loaded load, the problems such as the gear location is difficult, and the clearance measurement difficulty is large.
Description of drawings
Accompanying drawing 1 is one-piece construction synoptic diagram of the present invention.
Accompanying drawing 2 is that axial start of the present invention is in the structural representation of the second measuring appliance of driven wheel of differential.
Accompanying drawing 3 be in the accompanying drawing 2 A-A to the sectional structure synoptic diagram.
Accompanying drawing 4 be in the accompanying drawing 2 B to local structure for amplifying synoptic diagram.
Accompanying drawing 5 is that axial start of the present invention is in the structural representation of the first measuring appliance of drive bevel gear.
In above-mentioned accompanying drawing, the object that each shown by reference numeral indicates is: I-axial start is in the first measuring appliance of drive bevel gear; II-drive bevel gear; III-central transmission casing; IV-driven wheel of differential; V-axial start is in the second measuring appliance of driven wheel of differential; The 1-erection bolt; 2-the second shell frame; 3-second nut of exerting pressure; 4-the second latch; 5-second executes and draws spring; 6-the second outer member that draws; The 7-keeper; 8-the second interior pressure member; The 9-fixed pin; 10-second spring of exerting pressure; The 11-base; 12-the second axle sleeve; 13-second executes and draws nut; 14-the second bar axle; 15-the second spring base nut; The 16-lining; The 17-stop pin; The 18-dial framework; 19-first executes and draws spring; 20-the first latch; 21-first spring of exerting pressure; The 22-fastening screw nut; 23-the first spring base nut; 24-the first spring base; 25-first executes and draws nut; 26-the first axle sleeve; 27-first nut of exerting pressure; 28-first clamping components of exerting pressure; 29-the first shell frame; 30-the first bar axle; 31-the first outer member that draws.
Embodiment
Provide embodiments of the invention below in conjunction with description of drawings, and by embodiment the present invention is further described specifically, so that personnel's the understanding of the present invention of affiliated technical field.Be necessary what this particularly pointed out to be; embodiment is just for the present invention will be further described; can not be interpreted as limiting the scope of the invention; affiliated art skilled person; to improvement and adjustment that the present invention makes non-intrinsically safe, should still belong to protection scope of the present invention according to the invention described above content.
Embodiment 1
The device that is used for back lash under the survey aircraft central transmission casing bevel gear pair load that present embodiment provides, its structure as shown in Figure 1, axial start consists of in the second measuring appliance V of driven wheel of differential IV in the first measuring appliance I and the axial start of drive bevel gear II on the central transmission casing III by being installed in perpendicular to the gear face direction, and the first measuring appliance I and the second measuring appliance V are fixedly mounted on the central transmission casing by attachment bolt.
The structure of described the first measuring appliance consists of but move non-rotatable the first bar axle 30, drive bevel gear elastic clamping mechanism, the first internal axial pressure mechanism, the first axial outer drawing mechanism and be fixedly installed on the dial framework 18 that the first bar axle 30 outer ends are used for installing and measuring table by the first shell frame 9, with respect to the first shell frame localized axial as shown in Figure 5.Described resislient gear clamping device is by being fixedly mounted on the outer member 31 that draws of first on the first bar axle 30, can be nested with axially slidably the first interior pressure member 28 that acts in the first bar axle upper surface on the drive bevel gear cylinder inboard wall step surface and the fastening screw nut 22 that is installed on the first bar axle by screw thread pair consists of, described first outer draws member 31 for having flexible thin-wall wimble barrel; the large end outer rim of thin-wall wimble barrel and drive bevel gear cylinder inboard wall are interference fit; the described first interior pressure member 28 is designed with the long sleeve pipe; described fastening screw nut 22 end-acted in the end face of the first interior pressure member 28 telescopic pipes, by the realization of rotation fastening screw nut to the drive bevel gear resilient clamp.Described the first internal axial pressure mechanism by be nested with outside the first interior pressure member 28 telescopic pipes first exert pressure spring 21, with the first shell frame fix first exert pressure axle sleeve, be installed in by screw thread pair the first axle sleeve act on first exert pressure first of spring one end exert pressure nut 27 and act on first exert pressure the spring other end promote the gear clamping device inwardly axially movable the first spring base that is positioned on the first pressure member 28 telescopic pipes consist of.The described first axial outer drawing mechanism is by being nested with first executing and draw spring 19, first execute the pulling shaft cover, be installed in first by screw thread pair and execute pulling shaft and put and act on first and execute and draw first of spring one end to execute to draw nut 25 and act on first and execute and draw spring 19 other ends to promote the outside axially movable spring base nut 23 of gear clamping device to consist of with the first shell frame fixes outside the first interior pressure member 28 telescopic pipes, and spring base nut 23 is installed on the first interior pressure member 28 telescopic pipes by screw thread pair.Consist of exert pressure axle sleeve and to consist of first of the axial outer drawing mechanism axle sleeve of exerting pressure be same axle sleeve 26 of first of internal axial pressure mechanism.First exerts pressure is designed with the pin hole that is fixed together by latch 20 between axle sleeve and the first interior pressure member 28 telescopic pipes.Consist of first of the first internal axial pressure mechanism first of axle sleeve, nut, spring and spring base and formation the first axial outer drawing mechanism of exerting pressure and execute and draw nut, spring and spring base, opposite direction is set, form the gear clamping device is exerted pressure or executed the effect of drawing.Be provided with dial framework 18 in the outer end of the first bar axle, dial framework is designed with the measurement groove.
The structure of described the second measuring appliance shown in accompanying drawing 2,3,4, but by the support 11 of the second shell frame 2, supporting the second shell frame 2, move non-rotatable the second bar axle 14, driven wheel of differential rigidity clamping device, the second internal axial pressure mechanism and the second axial outer drawing mechanism with respect to the second shell frame localized axial and consist of.Described rigid gear clamping device second is drawn member 6 outward, is fixedly mounted on the keeper 7 on the second bar axle 14 and is placed in the second interior pressure member 8 formations that keeper upper surface and driven wheel of differential outer end are complementary by screw thread pair by fixed pin 9 by what be installed in that the second bar axle (14) upper surface and driven wheel of differential the inner be complementary, described keeper 7 connects with driven wheel of differential by splined is secondary, connect with the second shell frame 2 by moving axially non-rotatable register pin draw bail, realize the clamping of driven wheel of differential rigidity by rotating the second interior pressure member 8.Described pin draw bail is shown in accompanying drawing 2 and accompanying drawing 4, by being installed in the lining 16 that is designed with the bar shaped pin hole in the second housing 2 mounting holes, being positioned at pin hole on the pressure member spare 8, consisting of with bar hole and the pin 17 that is complementary of the pin hole on the pressure member 8 on the lining.Described the second internal axial pressure mechanism by be nested with outside the second bar axle second exert pressure spring 10, with the second shell frame fix second exert pressure axle sleeve 12, be installed in the second axle sleeve by screw thread pair and act on second the exert pressure nut 3 and act on the second spring other end of exerting pressure and promote the gear clamping device and inwardly move axially the second spring base and consist of of second of spring one end of exerting pressure.The described second axial outer drawing mechanism by be nested with outside the second bar axle second execute draw spring 5, with the second shell frame fix second execute the pulling shaft cover, by screw thread pair be installed in second execute pulling shaft put act on second execute draw second of spring one end to execute to draw nut 13 and act on second execute draw the spring other end promote the gear clamping device outwards axially movable the second spring base nut 15 consist of, spring base nut 15 is installed on the second bar axle 14 by screw thread pair.Consist of exert pressure axle sleeve and to consist of second of the axial outer drawing mechanism axle sleeve of exerting pressure be that same axle sleeve 12, the second is exerted pressure and is designed with the pin hole that is fixed together by latch 20 between axle sleeve and the second bar axle of second of internal axial pressure mechanism.Consist of second of the second internal axial pressure mechanism second of axle sleeve, nut, spring and spring base and formation the second axial outer drawing mechanism of exerting pressure and execute and draw nut, spring and spring base, opposite direction is set, form the gear clamping device is exerted pressure or executed the effect of drawing.
The process that adopts device of the present invention that back lash under the aircraft central transmission casing bevel gear pair load is measured is as follows:
Before the measurement, at first fix the central transmission casing, circlip and the low pressure bevel gear set of the low pressure bevel gear on the engaged wheel are taken off, the second measuring appliance is penetrated from the high-voltage drive axle, and the second shell frame 2 usefulness bolts 1 are fastened on the casing outside.Outer draw second of the second measuring appliance member 6 to remove, keeper 7 is installed in the cover increment of engaged wheel, rotate and screw the second outer draw piece 6 and the second interior pressure member 8, realize the clamping of driven wheel of differential rigidity.In the pin sky on the second latch 4 insertion the second sleeves 12 and the second bar axle 14, insert stop pin 16 pilot hole of keepers 7 from lining 17 check marking size and groove position.On the first measuring appliance, the first interior pressure member 28 is installed in the drive bevel gear, the first shell frame 29 is installed on the casing, rotation fastening screw nut 22 makes outside first and draws member 31 tensioners in active conical tooth, realizes the active conical tooth resilient clamp.Measuring tool is installed.
During measurement, latch 4 on the second measuring appliance is extracted, pulling second nut 3 of exerting pressure makes the nut small end flush with groove 5 on the second axle sleeve 12, second exerts pressure spring 10 also in the raw, continue to pull nut 3, spring 10 by compression applied thrust is given the second applicator member 8 and finally is applied on the follower gear.The other end of spring 10 also finally acts on load on the casing shell at nut 3, axle sleeve 12, shell 2.Pull nut and make spring continue compression, when nut 3 small ends were between groove 1,2, the pressure that acts on the follower gear reached 190N～200N.The first measuring appliance that is positioned at the driving gear end is repeated above-mentioned identical operation, the active conical tooth gear is applied the pressure of 190N～200N.Rotate the first bar axle 30 terminal nuts with spanner and drive the driving wheel rotation, the groove position of calibrating rack 18 is played table and is read numerical value, is central transmission casing bevel gear pair in the back lash value of bearing under the compressive load.
The nut 3 of pulling on driven wheel of differential end the second measuring appliance is got back to outside the groove 5 its small end, and spring 10 is got back to state of nature and no longer exerted pressure.Execute and draw nut 13 that the nut small end is flushed with groove 6 on the axle sleeve 12 with pulling second, second executes and draws spring 5 also in the raw, continue to pull nut 13, spring 5 applies simultaneously by compression power and draws member 6 and finally apply pulling force on follower gear to executing as nut 15, the second bar axle 14, second of spring base.The other end compression force of spring 5 also finally acts on the casing shell at nut 13, axle sleeve 12, the second shell frame 2.Pull nut 13 and make spring 5 continue compression, when nut 13 small ends were between groove 3,4, the pulling force that acts on the follower gear reached 300N～400N.The first measuring appliance that is positioned at the drive bevel gear end is repeated aforesaid operations, to drive bevel gear imposed load power.Rotate the first bar axle 30 terminal nuts with spanner and drive the driving wheel rotation, the groove position of calibrating rack 18 is played table and is read numerical value, and this numerical value is central transmission casing bevel gear pair and is bearing the back lash value of drawing under the load.
Claims (10)
1. back lash measurement mechanism under the aircraft central transmission casing bevel gear pair load, it is characterized in that comprising perpendicular to the gear face direction and be installed in the upper axial start of casing (III) in first measuring appliance (I) of drive bevel gear (II) and axial start in second measuring appliance (V) of driven wheel of differential (IV), the formation of the first measuring appliance and the second measuring appliance comprises shell frame (9 respectively, 2), but move non-rotatable bar axle (30 with respect to shell frame localized axial, 14), the gear clamping device, internal axial pressure mechanism and axial outer drawing mechanism, described gear clamping device is fixedly mounted on the bar axle, internal axial pressure mechanism and axial outer drawing mechanism are by the spring (21 that is nested with outside the bar axle, 19,10,5), the axle sleeve (26 that fixes with housing, 12), be installed in the nut (27 that acts on spring one end on the axle sleeve by screw thread pair, 25,3,13) and act on the spring other end and promote the axially movable spring base of gear clamping device and consist of, consist of the nut of internal axial pressure mechanism and axial outer drawing mechanism, spring and spring base arrange opposite direction, and formation is exerted pressure to the gear clamping device or executed the effect of drawing.
2. back lash measurement mechanism under the aircraft central transmission casing bevel gear pair load according to claim 1, it is characterized in that the first measuring appliance and the second measuring appliance are designed with the latch (20,4) that is used for fixing axle sleeve and bar axle relative position, be designed with the groove of measuring spring decrement on the axle sleeve (26,12) of formation internal axial pressure mechanism and axial outer drawing mechanism.
3. back lash measurement mechanism under the aircraft central transmission casing bevel gear pair load according to claim 1, one of bar axle that it is characterized in that consisting of the first measuring appliance and the second measuring appliance is fixedly installed the dial framework (18) that installs and measures table, design indication groove on the dial framework.
4. back lash measurement mechanism under the aircraft central transmission casing bevel gear pair load according to claim 1 is characterized in that nut at the nut of the internal axial pressure mechanism that consists of the first measuring appliance, the second measuring appliance and axially outer drawing mechanism all acts on spring (10,5,21,19) by spring base to connect.
5. back lash measurement mechanism under the aircraft central transmission casing bevel gear pair load according to claim 1 is characterized in that at the axle sleeve of the internal axial pressure mechanism that consists of the first measuring appliance, the second measuring appliance and the axle sleeve of axially outer drawing mechanism be the same sleeve (26,12) that is fixed on the shell frame (29,2).
6. back lash measurement mechanism to one of the 5 described aircraft central transmission casing bevel gear pair load according to claim 1, it is characterized in that the first measuring appliance that consists of the back lash measurement mechanism arranges for vertical, the second measuring appliance is for being horizontally disposed with, and the second shell frame (2) that consists of the second measuring appliance is placed on the ground by support (11).
7. back lash measurement mechanism to one of the 5 described aircraft central transmission casing bevel gear pair load according to claim 1, the gear clamping device that it is characterized in that the first measuring appliance is the resislient gear clamping device, by being fixedly mounted on the outer member (31) that draws of first on the first bar axle (30), can be nested with axially slidably the first interior pressure member (28) that acts in the first bar axle upper surface on the drive bevel gear cylinder inboard wall step surface and the fastening screw nut (22) that is installed on the first bar axle by screw thread pair consists of, described first outer draws member (31) for having flexible thin-wall wimble barrel; the large end outer rim of thin-wall wimble barrel and drive bevel gear cylinder inboard wall are interference fit; the described first interior pressure member designs has telescopic pipe; described fastening screw nut end-acted in the end face of the first interior pressure member telescopic pipe, by the realization of rotation fastening screw nut to the drive bevel gear resilient clamp.
8. back lash measurement mechanism under the aircraft central transmission casing bevel gear pair load according to claim 6 is characterized in that consisting of the spring base of the first measuring appliance internal axial pressure mechanism and axial outer drawing mechanism for being positioned at the spring seat structure on the first pressure member (28) telescopic pipe.
9. back lash measurement mechanism to one of the 5 described aircraft central transmission casing bevel gear pair load according to claim 1, the gear clamping device that it is characterized in that consisting of the second measuring appliance is the rigid gear clamping device, by being installed in the second outer member (6) that draws that the second bar axle (14) upper surface and driven wheel of differential the inner be complementary, be fixedly mounted on the keeper (7) on the second bar axle and be placed in the second interior pressure member (8) that keeper upper surface and driven wheel of differential outer end be complementary by screw thread pair by fixed pin (9) and consist of, realize the clamping of driven wheel of differential rigidity by rotating the second interior pressure member, described keeper connects with driven wheel of differential by key connecting is secondary, connects with the second shell frame (2) by moving axially non-rotatable pin draw bail.
10. back lash measurement mechanism under the aircraft central transmission casing bevel gear pair load according to claim 9, the second shell frame (2) that it is characterized in that consisting of the second measuring appliance is the wide open shell frame in two sides.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210529909.7A CN102980486B (en) | 2012-12-11 | 2012-12-11 | Meshing clearance measuring device for bevel gear pair of central transmission casing of plane under loading |
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| CN201210529909.7A CN102980486B (en) | 2012-12-11 | 2012-12-11 | Meshing clearance measuring device for bevel gear pair of central transmission casing of plane under loading |
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| CN102980486B CN102980486B (en) | 2015-03-25 |
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| CN113154013A (en) * | 2021-05-11 | 2021-07-23 | 中国航发沈阳发动机研究所 | Torsion-dividing output power device for central transmission bevel gear of aircraft engine |
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