CN115182986A - Mounting method of herringbone-tooth gear ring - Google Patents

Abstract

The invention discloses a mounting method of a herringbone gear ring, wherein the weights of an upper gear ring, a lower gear ring and a fixed sleeve are always supported by a supporting tool in the mounting process of the upper gear ring, the lower gear ring and the fixed sleeve, so that the weights of the gear ring and the fixed sleeve are prevented from being concentrated on meshing teeth of a planet gear and the herringbone gear ring in the mounting process; after the upper gear ring is installed on the planetary gear set, the relative position between the upper gear ring and the lower gear ring can be quickly adjusted by adjusting the jacking tool and the positioning marks, so that the planetary gear, the upper gear ring and the lower gear ring can be in the best meshing state, the stability and the safety of the planetary gear assembly and the gear ring in subsequent operation are ensured, and the assembly efficiency and the success rate are improved.

Description

Mounting method of herringbone-tooth gear ring

Technical Field

The invention relates to the field of nuclear power reducers, in particular to a mounting method of a herringbone gear ring.

Background

In a planetary gear train with herringbone teeth, a gear ring for transmission is formed by splicing two half herringbone tooth gear rings, two gear rings are required to be separately installed during assembly, and the heights of an upper gear ring and a lower gear ring are required to be adjusted after installation, so that external teeth of the upper gear ring and the lower gear ring are aligned, and an external fixing sleeve can be installed; the original assembly mode is that the lower gear ring is supported by an equal-height block with a certain height, the lower gear ring is hung up and down by a traveling crane to adjust the alignment of the external teeth, the adjustment mode is heavy and insensitive, and multiple times of adjustment are needed; in addition, when the fixing sleeve is integrally assembled, the height of the fixing sleeve also needs to be adjusted when the lower snap spring between the fixing sleeve and the fixing ring is installed; the original scheme is that the height of the fixing sleeve is adjusted by a crowbar, and the method is heavy, time-consuming, labor-consuming and easy to damage parts.

The patent document with the publication number of CN104141745A discloses a star-shaped herringbone gear reducer, which comprises a planet carrier, a fixed ring and a star-shaped gear pair consisting of a sun gear, a planet gear and an inner gear ring, and is characterized in that the teeth of the sun gear, the planet gear and the inner gear ring in the star-shaped gear pair are herringbone teeth, an involute spline is arranged in the sun gear, and the sun gear and an input shaft are fixedly connected with the fixed ring and the inner gear ring through the spline to be assembled and realize torque output; the planet wheel consists of a herringbone gear, a web plate, a first gasket and a fixing plate, wherein the web plate is positioned in an inner cavity of the herringbone gear, splines are circumferentially arranged on the inner side of the herringbone gear, the splines are circumferentially and uniformly distributed on the outer side of the web plate, the herringbone gear is connected with the web plate through the splines, a gap filling elastic material is reserved between the splines and the splines, the first gasket and the fixing plate are positioned at two ends of the web plate and fixedly connected with the web plate through a first double-ended stud, and the web plate is connected with a planet wheel shaft through a flat key; two ends of the planet wheel shaft are in interference fit with a cylindrical roller bearing fixed on the planet carrier; the planet carrier consists of a planet carrier base and a planet carrier top plate, a plurality of round holes are uniformly distributed on the planet carrier base and the planet carrier top plate along the circumferential direction along the axis center, bosses are arranged on the round holes of the planet carrier base and the planet carrier top plate, a planet wheel shaft is matched with a cylindrical roller bearing and is positioned in the round holes, and the planet carrier base is fixedly connected with the planet carrier top plate through bolts; the inner gear ring comprises an upper gear ring and a lower gear ring, one end of an escape groove of the upper gear ring and one end of an escape groove of the lower gear ring are respectively provided with a trapezoidal boss and a trapezoidal groove, the upper gear ring and the lower gear ring are matched through the trapezoidal boss and the trapezoidal groove to realize circumferential and transverse positioning, and a plurality of first arc-shaped grooves and second arc-shaped grooves are uniformly distributed at the other end of the upper gear ring and the other end of the lower gear ring along the circumferential direction; the retainer plate includes retainer plate, retainer plate down, goes up a plurality of first arc bosss of circumference equipartition, second arc boss in retainer plate and the lower retainer plate respectively, and with the concave fixed fit of first arc recess, second arc of last ring gear and lower ring gear, bottom output is equipped with third internal spline and output shaft in the lower retainer plate, goes up the retainer plate and has the mounting hole to pass through the bolt with retainer plate one end flange respectively and link firmly.

In the prior art, the upper gear ring and the lower gear ring are connected in a matched mode through the bosses, the grooves and the bolts, the machining precision requirement on the gear ring is high during machining, meanwhile, the matching precision requirement on the upper gear ring and the lower gear ring is high during installation of the gear ring and the planetary gear set, in the installation process and the transfer process of the speed reducer, the weight of the gear ring is completely born by herringbone teeth, radial gaps between the gear ring and the planetary gear are not uniform if the gear ring points are highly different, transmission jumping is easily caused, and the service life of the speed reducer is shortened.

Disclosure of Invention

In order to solve the problem of how to avoid the problem of different radial clearances between a gear ring and a planet wheel in the prior art, the invention aims to provide the mounting method of the herringbone gear ring.

In order to achieve the purpose, the invention adopts the following technical scheme: a mounting method of a herringbone gear ring comprises an upper gear ring and a lower gear ring, wherein the upper gear ring and the lower gear ring are both provided with inner teeth and outer teeth, the inner teeth of the upper gear ring and the inner teeth of the lower gear ring can be spliced to form complete herringbone teeth, the upper gear ring and the lower gear ring are sleeved outside a plurality of planet wheels of a planet wheel set and are meshed with the planet wheels, the outer teeth of the plurality of planet wheels of the planet wheel set are both herringbone teeth, a fixing sleeve is sleeved outside the upper gear ring and the lower gear ring, and the upper gear ring and the lower gear ring are both in spline fit with the fixing sleeve and are axially fixed; the herringbone gear ring comprises the following steps:

step 1) sleeving and fixing a lower gear ring with processed internal teeth and a lower gear ring with processed internal teeth on a correction tire of a tooth alignment tool, simultaneously processing external teeth of an upper gear ring and external teeth of the lower gear ring, and respectively engraving corresponding positioning marks on an upper gear ring and a lower gear ring with processed external teeth after the external teeth are processed; the outer circular surface of the correction tire is provided with herringbone teeth, an upper gear ring is meshed with the upper half part of the correction tire in a tooth form, and a lower gear ring is meshed with the lower half part of the correction tire in a tooth form;

step 2) horizontally hoisting the lower gear ring, sleeving the lower gear ring outside the tooling table, and moving the planetary gear set to the tooling table; the outer diameter of the tooling table is not larger than that of a planet carrier in the planetary wheel set;

step 3) horizontally hoisting the lower gear ring by using a hoisting tool, so that the lower gear ring is sleeved on the planetary wheel set from bottom to top, the lower gear ring is in tooth-shaped engagement with the lower half parts of the plurality of planet wheels of the planetary wheel set, the lower gear ring is supported by using a supporting tool after hoisting is finished, the height of the lower gear ring is adjusted by using the supporting tool, and the coarse positioning of the lower gear ring is finished; the upper gear ring is horizontally lifted by using a lifting appliance, the upper gear ring is rotated according to the positioning mark of the lower gear ring, and the position of the positioning mark of the upper gear ring is adjusted, so that after the upper gear ring is sleeved on the planetary gear set from top to bottom, the upper gear ring is in tooth-shaped engagement with the upper half parts of a plurality of planetary gears in the planetary gear shaft, and the coarse positioning of the upper gear ring and the lower gear ring is completed;

step 4) installing two jacking tools on the side surface of a planet carrier of the planetary gear set, wherein the two jacking tools are arranged oppositely, a mounting seat of each jacking tool is fixed on the side surface of the planet carrier, a screw rod in threaded connection on the mounting seat is abutted against the bottom of the lower gear ring, the two screws of the two jacking tools are respectively rotated, the relative positions of the upper gear ring and the lower gear ring are finely adjusted, so that the positioning marks respectively positioned on the upper gear ring and the lower gear ring are mutually corresponding, and further, the fine adjustment of the relative position between the upper gear ring and the lower gear ring is completed;

and 5) horizontally hoisting the fixed ring and sleeving the fixed ring outside the upper gear ring and the lower gear ring from top to bottom to enable the outer teeth of the upper gear ring and the outer teeth of the lower gear ring to be meshed with the inner teeth of the fixed sleeve, so that circumferential positioning of the upper gear ring, the lower gear ring and the fixed sleeve is realized, the clamp spring is installed to axially position the upper gear ring, the lower gear ring and the fixed sleeve, and then the support tool is detached.

Preferably, in the step 1), after the upper gear ring and the lower gear ring are fixed on the tooth aligning tool, the distance between the top of the upper gear ring and the bottom of the lower gear ring is greater than the height of the correcting tire, a lower pressure plate of the tooth aligning tool is fixedly connected with the bottom of the correcting tire and the bottom of the lower gear ring through a plurality of bolts, and an upper pressure plate is fixedly connected with the top of the correcting tire and the top of the upper gear ring through a plurality of bolts; wherein lower pressure strip and last pressure strip all are circularly, and the excircle diameter of lower pressure strip is less than the diameter of lower ring gear root circle, and the excircle diameter of last pressure strip is less than the diameter of last ring gear root circle.

Preferably, in the step 1), after the external teeth of the upper gear ring and the lower gear ring are machined, the circle run-out error between the upper gear ring and the lower gear ring is not more than 0.03.

Preferably, in the step 3), the supporting tool comprises a jack and a wood cushion block, the jack is connected with the bottom of the lower gear ring through the wood cushion block, and the lower gear ring is roughly positioned by adjusting the extension length of the jack.

Preferably, the clamp spring comprises an upper clamp spring and a lower clamp spring, two annular positioning grooves are formed in the inner side of the fixed sleeve in the vertical direction, and the two positioning grooves are formed in the inner teeth of the fixed sleeve; in the step 4), before the fixed sleeve is lifted, the upper clamp spring is firstly installed in the positioning groove on the upper side; after the inner teeth of the fixed sleeve are meshed with the outer teeth of the herringbone gear ring, the lower clamp spring is installed in the positioning groove on the lower side, and the outer teeth of the herringbone gear ring are located between the upper clamp spring and the lower clamp spring.

Preferably, in step 5), when the jacking tool is installed, the installation base is fixed on the side surface of the planet carrier through two bolts, the two bolts are respectively arranged on two sides of the screw rod, the length of the bolt connected with the planet carrier is adjusted by rotating the two bolts respectively, the inclination angle of the installation base is further adjusted, the position of the screw rod connected with the lower gear ring is further finely adjusted, and the relative position of the screw rods on the two jacking tools is finely adjusted.

Preferably, in the step 5), the screw of the jacking tool abuts against the bottom of the lower gear ring through a gasket.

Preferably, in the step 5), after the upper gear ring is installed, the circular runout error between the upper gear ring and the lower gear ring is not more than 0.03 by rotating the two screws for jacking up the tooling.

The technical scheme of the invention has the beneficial effects that: in the mounting process of the herringbone-tooth gear ring, the supporting tool is used for supporting, so that the weight of the gear ring and the weight of the fixing sleeve are prevented from being concentrated on the meshing teeth of the planetary gear and the herringbone-tooth gear ring in the mounting process, and the tooth profile is prevented from being broken; the relative position between the upper gear ring and the lower gear ring can be quickly adjusted by adjusting the jacking tool and the positioning marks, so that the planet wheel, the upper gear ring and the lower gear ring can be in the best meshing state, the stability and the safety of the planet wheel assembly and the gear ring in subsequent operation are ensured, and the assembly efficiency and the success rate are improved.

Drawings

FIG. 1 is a schematic view of an installation structure of a planetary wheel set, a herringbone gear ring, a fixing sleeve and a jacking tool;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic view of a connection structure of a herringbone gear ring and a planetary gear set;

fig. 4 is a schematic structural diagram of the jacking tool.

Reference numerals: 8. a planet carrier; 9. a lower gear ring; 10. an upper gear ring; 11. fixing a sleeve; 110. mounting a clamp spring; 111. a lower clamp spring; 20. a sun gear; 21. a planetary wheel shaft; 22. a planet wheel; 25. jacking up the tool; 251. a mounting seat; 252. a screw.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

A mounting method of a herringbone gear ring is disclosed, as shown in figures 1-4, the herringbone gear ring comprises an upper gear ring 10 and a lower gear ring 9, the upper gear ring 10 and the lower gear ring 9 are both provided with inner teeth and outer teeth, the inner teeth of the upper gear ring 10 and the inner teeth of the lower gear ring 9 can be spliced to form complete herringbone teeth, the upper gear ring 10 and the lower gear ring 9 are sleeved outside a plurality of planet wheels 22 of a planet wheel set and are meshed with the planet wheels 22, the outer teeth of the plurality of planet wheels 22 of the planet wheel set are all herringbone teeth, a fixing sleeve 11 is sleeved outside the upper gear ring 10 and the lower gear ring 9, and the upper gear ring 10 and the lower gear ring 9 are in spline fit with the fixing sleeve 11 and are axially fixed; the herringbone gear ring comprises the following steps:

step 1) sleeving and fixing a lower gear ring 9 with processed internal teeth and a lower gear ring 10 with processed internal teeth on a correction tire of a gear alignment tool, simultaneously processing external teeth of an upper gear ring 10 and external teeth of the lower gear ring 9, and respectively engraving corresponding positioning marks on the upper gear ring 10 with processed external teeth and the upper gear ring 9 with processed external teeth after the external teeth are processed; the outer circle surface of the correction tire is provided with herringbone teeth, the upper gear ring 10 is meshed with the upper half part of the correction tire in a tooth form, and the lower gear ring 9 is meshed with the lower half part of the correction tire in a tooth form;

step 2) horizontally hoisting the lower gear ring 9, sleeving the lower gear ring outside the tooling table, and moving the planetary gear set to the tooling table; the outer diameter of the tooling table is not larger than the outer diameter of a planet carrier 8 in the planetary wheel set;

step 3) horizontally hoisting the lower gear ring 9 by using a hoisting tool, so that the lower gear ring 9 is sleeved on the planetary wheel set from bottom to top, the lower gear ring 9 is in toothed meshing with the lower half parts of the plurality of planetary wheels 22 of the planetary wheel set, after hoisting is finished, the lower gear ring 9 is supported by using a supporting tool, and the height of the lower gear ring 9 is adjusted by using the supporting tool, so that the coarse positioning of the lower gear ring 9 is finished; horizontally hoisting the upper gear ring 10 by using a lifting appliance, rotating the upper gear ring according to the positioning mark of the lower gear ring 9, and adjusting the position of the positioning mark of the upper gear ring 10 to ensure that the upper gear ring 10 is sleeved on the planetary gear set from top to bottom, and the upper gear ring 10 is in toothed engagement with the upper half parts of a plurality of planetary gears 22 in the planetary gear shaft to finish the coarse positioning of the upper gear ring 10 and the lower gear ring 9;

step 4) installing two jacking tools 25 on the side surface of a planet carrier 8 of the planetary gear set, wherein the two jacking tools 25 are arranged oppositely, a mounting seat 251 of each jacking tool 25 is fixed on the side surface of the planet carrier 8, a screw 252 in threaded connection with the mounting seat 251 is abutted against the bottom of the lower gear ring 9, two screws 252 of the two jacking tools 25 are respectively rotated, the relative positions of the upper gear ring 10 and the lower gear ring 9 are precisely adjusted, so that the positioning marks respectively positioned on the upper gear ring 10 and the lower gear ring 9 correspond to each other, and further the precise adjustment of the relative position between the upper gear ring 10 and the lower gear ring 9 is completed;

and 5) horizontally hoisting the fixed ring 11 and sleeving the fixed ring outside the upper gear ring 10 and the lower gear ring 9 from top to bottom to enable the outer teeth of the upper gear ring 10 and the outer teeth of the lower gear ring 9 to be meshed with the inner teeth of the fixed sleeve 11, so that the circumferential positioning of the upper gear ring 10, the lower gear ring 9 and the fixed sleeve 11 is realized, and the support tool is detached after the upper gear ring 10, the lower gear ring 9 and the fixed sleeve 11 are axially positioned by installing a clamp spring.

According to the arrangement, in the mounting process of the herringbone-tooth gear ring, the supporting tool is used for supporting, so that the situation that the weight of the gear ring and the fixed sleeve is concentrated on meshing teeth of the planetary gear and the herringbone-tooth gear ring in the mounting process is avoided, and the tooth profile is prevented from collapsing; the relative position between the upper gear ring and the lower gear ring can be quickly adjusted by adjusting the jacking tool and the positioning marks, so that the planet wheel, the upper gear ring and the lower gear ring can be in the best meshing state, the stability and the safety of the planet wheel assembly and the gear ring in subsequent operation are ensured, and the assembly efficiency and the success rate are improved.

In this embodiment, the mounting seat 251 of the jacking tool 25 is fixed on the side surface of the planet carrier 8 through two bolts, and the two bolts are respectively arranged on two sides of the screw 252; when the jacking tools 25 are installed, the lengths of the two bolt adjusting bolts connected with the planet carrier 8 are respectively rotated, so that the inclination angle of the installation seat 251 is adjusted, the connection positions of the screw rods 252 and the lower gear ring 9 are finely adjusted, and the relative positions of the screw rods 252 on the two jacking tools 25 are finely adjusted. So set up, be convenient for adjust the precision of the relative position between two screw rods, make the effect of jack-up frock more obvious, be convenient for adjust the relative position of ring gear and ring gear down. Further, the screw 252 of the jack-up tool 25 abuts against the bottom of the lower ring gear 9 through a gasket. So set up, increase the lifting surface area of ring gear down, prevent the damage of ring gear 9 down. Further, the supporting tool comprises a jack and a wood cushion block, and the jack jacks the lower gear ring 10 through the wood cushion block. So set up, because follow-up fixed cover 11 of still needing hoist and mount and go up ring gear 10, what ring gear 9 needed down this moment can be stable and safe state, and the jack can provide sufficient holding power for ring gear down, and the wooden cushion can prevent the damage of ring gear 9 down.

In this embodiment, in step 1), after the upper gear ring 10 and the lower gear ring 9 are fixed on the tooth aligning tool, a distance between the top of the upper gear ring 10 and the bottom of the lower gear ring 9 is greater than a height of the correcting tire, a lower pressure plate of the tooth aligning tool is fixedly connected to the bottom of the correcting tire and the bottom of the lower gear ring 9 through a plurality of bolts, and the upper pressure plate is fixedly connected to the top of the correcting tire and the top of the upper gear ring 10 through a plurality of bolts; wherein lower pressure strip and last pressure strip all are circularly, and the excircle diameter of lower pressure strip is less than the diameter of 9 root circles of lower ring gear, and the excircle diameter of last pressure strip is less than the diameter of 10 root circles of upper ring gear, and after the processing of the outer tooth of upper ring gear 10 and 9 lower ring gears was accomplished, the circle run-out error between upper ring gear 10 and the lower ring gear 9 was no longer than 0.03. So set up, make the external tooth of going up the ring gear and have very high uniformity with lower ring gear through above-mentioned mode to pair the back through the alignment mark, make the profile of tooth of the external tooth of going up the ring gear unanimous with the profile of tooth of ring gear external tooth down, reduce the error, improve installation effectiveness and installation accuracy, make driven process more stable. Further, after the external teeth of the upper gear ring 10 and the lower gear ring 9 are machined and the upper gear ring 10 and the lower gear ring 9 are assembled, the circle run-out error between the upper gear ring 10 and the lower gear ring 9 is not more than 0.03.

In this embodiment, two annular constant head tanks have been seted up to fixed cover 11 inboards, and the direction is arranged from top to bottom two constant head tanks, and two constant head tanks are seted up on fixed cover 11's internal tooth section, and in above-mentioned step 4), the mode of going up ring gear 10, lower ring gear 9 and fixed cover 11 axial fixity is: before the fixed sleeve 11 is hoisted, the upper clamp spring 110 is installed in the positioning groove on the upper side, after the fixed sleeve 11 is hoisted, the lower clamp spring 111 is installed in the positioning groove on the lower side, and the external teeth of the upper gear ring 10 and the external teeth of the lower gear ring 9 are located between the upper clamp spring 110 and the lower clamp spring 111. By the arrangement, the axial positions of the upper gear ring and the lower gear ring are adjusted, so that the herringbone teeth are radially meshed and centered, the outer teeth are aligned, and the fixed sleeve, the upper gear ring and the lower gear ring are connected into a whole.

In the present embodiment, the planetary gear set further includes a sun gear 20 and a plurality of planetary shafts 21, the outer teeth of the sun gear 20 are herringbone teeth, the plurality of planetary shafts 21 are arranged around the sun gear 20, the plurality of planetary gears 22 are all engaged with the sun gear 20, the plurality of planetary shafts 21 are fixed on the carrier 8, and the plurality of planetary gears 22 are rotatably and vertically slidably mounted on the plurality of planetary shafts 21. The planet wheel shaft 21 and the planet wheel 20 are in sliding friction through a Babbitt alloy coating. Because the upper gear ring 10 and the lower gear ring 9 are both meshed with the fixed sleeve 11, the axial positions of the upper gear ring 10, the lower gear ring 9 and the fixed sleeve 11 are fixed through the upper snap spring 110 and the lower snap spring 111, the planet gear 22 is a herringbone gear, and the upper gear ring 10 and the lower gear ring 9 are respectively meshed with the upper tooth part and the lower tooth part of the planet gear 22, so that the axial positions of the planet gear 22, the upper gear ring 10, the lower gear ring 9 and the fixed sleeve 11 are fixed, and further, when the jacking tool 25 jacks the lower gear ring 9 to adjust the height of the lower gear ring 9, the lower gear ring 9 can drive the fixed sleeve 11, the upper gear ring 10 and the planet gear 22 to move up and down to adjust the axial positions.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that those skilled in the art may make variations, modifications, substitutions and alterations within the scope of the present invention without departing from the spirit and scope of the present invention.

Claims (8)

1. A mounting method of a herringbone gear ring comprises an upper gear ring (10) and a lower gear ring (9), wherein the upper gear ring (10) and the lower gear ring (9) are both provided with inner teeth and outer teeth, the inner teeth of the upper gear ring (10) and the inner teeth of the lower gear ring (9) can be spliced to form complete herringbone teeth, the upper gear ring (10) and the lower gear ring (9) are sleeved outside a plurality of planet wheels (22) of a planet wheel set and are meshed with the planet wheels (22), the outer teeth of the planet wheels (22) of the planet wheel set are all herringbone teeth, and the mounting method is characterized in that: the upper gear ring (10) and the lower gear ring (9) are sleeved with a fixed sleeve (11), and the upper gear ring (10) and the lower gear ring (9) are in spline fit with the fixed sleeve (11) and are axially fixed; the herringbone gear ring comprises the following steps:

step 1) sleeving and fixing a lower gear ring (9) with processed internal teeth and a lower gear ring (10) with processed internal teeth on a correcting tire of a tooth aligning tool, simultaneously processing external teeth of an upper gear ring (10) and external teeth of the lower gear ring (9), and respectively engraving corresponding positioning marks on the upper gear ring (10) with processed external teeth and the lower gear ring (9) with processed external teeth after the external teeth are processed; the outer circular surface of the correction tire is provided with herringbone teeth, an upper gear ring (10) is meshed with the upper half part of the correction tire in a tooth form, and a lower gear ring (9) is meshed with the lower half part of the correction tire in a tooth form;

step 2), horizontally hoisting the lower gear ring (9), sleeving the lower gear ring outside the tooling table, and moving the planetary gear set to the tooling table; the outer diameter of the tooling table is not more than the outer diameter of a planet carrier (8) in the planetary wheel set;

step 3) horizontally hoisting the lower gear ring (9) by using a hoisting tool, sleeving the lower gear ring (9) on the planetary wheel set from bottom to top, meshing the lower gear ring (9) with the lower half parts of a plurality of planetary wheels (22) of the planetary wheel set in a tooth form, supporting the lower gear ring (9) by using a supporting tool after hoisting is finished, and adjusting the height of the lower gear ring (9) by using the supporting tool to finish coarse positioning of the lower gear ring (9); the upper gear ring (10) is horizontally lifted by using a lifting appliance, the upper gear ring is rotated according to the positioning mark of the lower gear ring (9), the position of the positioning mark of the upper gear ring (10) is adjusted, after the upper gear ring (10) is sleeved on the planetary gear set from top to bottom, the upper gear ring (10) is in tooth-shaped engagement with the upper half parts of a plurality of planetary gears (22) in the planetary gear shaft, and the coarse positioning of the upper gear ring (10) and the lower gear ring (9) is completed;

step 4), two jacking tools (25) are mounted on the side face of a planet carrier (8) of the planetary gear set, the two jacking tools (25) are arranged oppositely, a mounting seat (251) of each jacking tool (25) is fixed on the side face of the planet carrier (8), a screw (252) in threaded connection on the mounting seat (251) abuts against the bottom of a lower gear ring (9), the two screws (252) of the two jacking tools (25) are respectively rotated, the relative positions of an upper gear ring (10) and the lower gear ring (9) are finely adjusted, so that positioning marks respectively positioned on the upper gear ring (10) and the lower gear ring (9) correspond to each other, and further the fine adjustment of the relative positions between the upper gear ring (10) and the lower gear ring (9) is completed;

and 5) horizontally hoisting the fixing ring (11) and sleeving the fixing ring (11) outside the upper gear ring (10) and the lower gear ring (9) from top to bottom, so that the outer teeth of the lower gear ring (9) of the upper gear ring (10) are all meshed with the inner teeth of the fixing sleeve (11), the circumferential positioning of the upper gear ring (10), the lower gear ring (9) and the fixing sleeve (11) is realized, and the support tool is detached after the upper gear ring (10), the lower gear ring (9) and the fixing sleeve (11) are axially positioned by installing a clamp spring.

2. The method for mounting a herringbone gear ring according to claim 1, wherein the method comprises the following steps: in the step 1), after the upper gear ring (10) and the lower gear ring (9) are fixed on the gear aligning tool, the distance between the top of the upper gear ring (10) and the bottom of the lower gear ring (9) is larger than the height of the correcting tire, a lower pressure plate of the gear aligning tool is fixedly connected with the bottom of the correcting tire and the bottom of the lower gear ring (9) through a plurality of bolts, and an upper pressure plate is fixedly connected with the top of the correcting tire and the top of the upper gear ring (10) through a plurality of bolts; wherein, the lower pressure strip and the upper pressure strip are both circular, the excircle diameter of the lower pressure strip is smaller than the diameter of the root circle of the lower gear ring (9), and the excircle diameter of the upper pressure strip is smaller than the diameter of the root circle of the upper gear ring (10).

3. The method for mounting a herringbone gear ring according to claim 1, wherein the method comprises the following steps: in the step 1), after the external teeth of the upper gear ring (10) and the lower gear ring (9) are processed, the circular runout error between the upper gear ring (10) and the lower gear ring (9) is not more than 0.03.

4. The method for mounting a herringbone gear ring according to claim 1, wherein: and in the step 3), the supporting tool comprises a jack and a wood cushion block, the jack is connected with the bottom of the lower gear ring (9) through the wood cushion block, and the lower gear ring (10) is roughly positioned by adjusting the extension length of the jack.

5. The method for mounting a herringbone gear ring according to claim 1, wherein the method comprises the following steps: the clamp spring comprises an upper clamp spring (110) and a lower clamp spring (111), two annular positioning grooves which are arranged in the vertical direction are formed in the inner side of the fixed sleeve (11), and the two positioning grooves are formed in the inner teeth of the fixed sleeve (11); in the step 4), before the fixed sleeve (11) is lifted, the upper clamp spring (110) is installed in the positioning groove on the upper side; after the inner teeth of the fixed sleeve (11) are meshed with the outer teeth of the herringbone gear ring, a lower clamp spring (111) is installed in the positioning groove located on the lower side, and the outer teeth of the herringbone gear ring are located between the upper clamp spring (110) and the lower clamp spring (111).

6. The method of assembling a herringbone-toothed planetary gear train assembly of claim 1, wherein: in the step 5), when the jacking tool (25) is installed, the installation seat (251) is fixed on the side surface of the planet carrier (8) through two bolts, the two bolts are respectively arranged on two sides of the screw rod (252), the length of the bolt connected with the planet carrier (8) is adjusted by respectively rotating the two bolts, the inclination angle of the installation seat (251) is further adjusted, the position of the screw rod (252) connected with the lower gear ring (9) is further finely adjusted, and the relative position of the screw rods (252) on the two jacking tools (25) is finely adjusted.

7. The method of assembling a herringbone toothed planetary gear train assembly of claim 1, wherein: and in the step 5), the screw (252) of the jacking tool (25) is abutted against the bottom of the lower gear ring (9) through a gasket.

8. The method of assembling a herringbone-toothed planetary gear train assembly of claim 1, wherein: in the step 5), after the upper gear ring (10) is installed, the relative positions of the upper gear ring (10) and the lower gear ring (9) are adjusted by rotating the screws (252) of the two jacking tools (25), so that the circular runout error between the upper gear ring (10) and the lower gear ring (9) is not more than 0.03.

Images