CN113118740A

CN113118740A - Planet shaft press fitting tool

Info

Publication number: CN113118740A
Application number: CN202110428109.5A
Authority: CN
Inventors: 彭广盼; 仝晚泽; 奕超
Original assignee: Wuxi Institute of Technology
Current assignee: Wuxi Institute of Technology
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-07-16
Anticipated expiration: 2041-04-21
Also published as: CN113118740B

Abstract

The invention provides a planet shaft press-fitting tool, which relates to the technical field of planet wheel processing equipment and comprises a base, wherein a turntable is movably arranged on the top surface of the base, a round base is arranged between the top surface of the base and the turntable, the lower end of the round base is fixedly embedded in the base, the upper end of the round base movably penetrates through the turntable, a middle air passage is arranged inside the round base in a penetrating manner, a left air passage and a right air passage are arranged inside the base, one end of the left air passage and one end of the right air passage are respectively connected with a left air inlet pipe and a right air inlet pipe through air pipe joints, an annular air passage is also arranged on the top surface of the base, the other end of the left air passage is communicated with the annular air passage, the other end of the right air passage is communicated with the middle air passage, a shunting base is arranged on the top surface of the turntable, a cavity, and the upper end of the round bottom seat is positioned in the cavity, and a shunting air passage communicated with the cavity is arranged in the upper end of the shunting seat. The invention has the advantages of improving the efficiency and the precision of the installation of the planet shaft and the like.

Description

Planet shaft press fitting tool

Technical Field

The invention relates to the technical field of planet wheel processing equipment, in particular to a planet shaft press-fitting tool.

Background

The planetary mechanism is a common speed reducing mechanism for large-scale engineering machinery terminal drive, and structurally comprises a planet carrier, a planet wheel and a planet shaft. The planet shaft is fixed in the planet carrier through the planet wheel, and the planet shaft and the planet carrier are usually in interference fit.

The existing technology for assembling the planet shaft is generally a method that the planet shaft is frozen in advance and then is knocked by hand. Problems with this approach are: 1. in the assembly process, the planet wheel is not positioned in the radial direction and is easy to shift, so that the planet shaft cannot move downwards, manual adjustment is needed, and the efficiency is low; 2. even if the planet shaft is frozen in advance, the planet shaft is difficult to install due to large interference, and a large amount of manpower is consumed; 3. the distance of the downward movement of the planet shaft is difficult to ensure, and the planet shaft is easy to be installed in place.

Disclosure of Invention

The invention aims to provide a planet shaft press-fitting tool capable of improving the efficiency and the precision of the installation of a planet shaft.

In order to solve the technical problem, the invention provides a planet shaft press-fitting tool, which comprises a base, wherein a rotary table is movably arranged on the top surface of the base, a round base is arranged between the top surface of the base and the rotary table, the lower end of the round base is fixedly embedded in the base, the upper end of the round base movably penetrates through the rotary table, a middle air passage is arranged in the round base in a penetrating manner, a left air passage and a right air passage are arranged in the base, one end of the left air passage and one end of the right air passage are respectively connected with a left air inlet pipe and a right air inlet pipe through air pipe connectors, the top surface of the base is also provided with an annular air passage, the other end of the left air passage is communicated with the annular air passage, the other end of the right air passage is communicated with the middle air passage, a shunting seat is arranged on the top surface of the rotary table, a cavity body is, middle air flue is linked together through the cavity body and reposition of redundant personnel air flue, divide the branch air flue that a plurality of all are linked together with the reposition of redundant personnel air flue along circumference equipartition on the seat, it connects still to be provided with the branch air flue on the branch air flue, the cavity form bobbin cradle of a plurality of and branch air flue joint one-to-ones along circumference equipartition on the top surface of carousel, the upper and lower both ends of cavity form bobbin cradle are the opening form, it is provided with the telescopic link all to slide in the cavity form bobbin cradle, all be linked together through being connected the trachea between cavity form bobbin cradle and the corresponding branch air flue joint, still all be provided with the trachea ooff valve on the connecting tube, still all be provided with the.

Preferably, a turntable positioning device is further arranged on the top surface of the base, the turntable positioning device comprises a positioning seat, the positioning seat is fixedly arranged on the top surface of the base, elastic top beads are embedded in one side wall of the positioning seat, a plurality of hemispherical positioning holes matched with the elastic top beads are uniformly distributed on the outer circumferential wall of the turntable, the number of the hemispherical positioning holes is the same as that of the hollow bobbin creels, and therefore after the turntable is rotated to a corresponding position on the base, the elastic top beads can be pushed into the hemispherical positioning holes at the corresponding position on the outer circumferential wall of the turntable, and on one hand, the position of the turntable is fixed; on the other hand, the turntable is convenient to rotate to realize transposition of the hollow bobbin creel, and further the press fitting operation of the planet shaft is convenient.

Preferably, the axial lead of annular air flue and the axial lead coincidence of carousel, and the top surface of annular air flue flushes with the top surface of base, is convenient for ventilate the back in annular air flue through left air flue, can slightly hold up the carousel under the effect of atmospheric pressure for the pressure reduction of carousel to the production of base top surface, and then be convenient for rotate the carousel, make things convenient for the operation personnel to rotate, practice thrift manpower and time.

Preferably, the periphery wall of telescopic link is laminated with the inner wall of cavity form bobbin creel mutually, and connects tracheal one end and is connected with the branch air flue joint, connects tracheal other end and runs through to the inside of cavity form bobbin creel of telescopic link below, after ventilating the inside of cavity form bobbin creel through connecting the trachea, makes the telescopic link rise to the outside of cavity form bobbin creel under atmospheric pressure's effect, is convenient for fix a position the planet wheel before planet axle pressure equipment.

Preferably, still fixed mounting has a plurality of fixed plates with trachea ooff valve one-to-one on the top surface of carousel, trachea ooff valve fixed mounting respectively on corresponding fixed plate, can improve the fastness that trachea ooff valve is fixed, makes things convenient for the operation personnel to realize connecting tracheal whether ventilating through trachea ooff valve, has improved the simple operation nature.

Preferably, still inlay in the periphery wall of telescopic link and be equipped with the annular shape sealing washer, inconsistent between the inner wall of periphery wall and the cavity form bobbin creel of annular shape sealing washer, can improve the leakproofness between telescopic link and the cavity form bobbin creel, and then can be favorable to guaranteeing the precision of planet axle at the installation.

Preferably, the number of the hollow bobbin creels is at least three, the hollow bobbin creels can be arranged correspondingly according to the number of the planet wheels in the planet mechanism, press fitting can be conveniently achieved for the planet shafts with different numbers, and applicability is improved.

The invention has the beneficial effects that:

(1) when the planet shaft is installed, the planet shaft is pressed down more stably due to the connection of the telescopic rod, the axial limit of the planet shaft in the pressing down process is ensured, and the assembly accuracy and efficiency are improved;

(2) due to the design of the plurality of hollow bobbin creels and the telescopic rods, all the planet shafts can be clamped at one time, the press-fitting operation of all the planet shafts can be completed at the same time, and the assembly efficiency is improved;

(3) the arrangement of the turntable positioning device is convenient for the elastic ejecting ball to be ejected into the hemispherical positioning hole at the corresponding position on the outer circumferential wall of the turntable after the turntable is rotated, so that the position of the rotated turntable can be positioned, and the press mounting operation of each planet shaft can be accurately completed.

Drawings

The accompanying drawings, which are included to provide a further understanding 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 and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a planetary shaft press-fitting tool of the present invention;

FIG. 2 is a schematic diagram of the positions of a left air passage and a right air passage of the planetary shaft press-fitting tool of the invention;

FIG. 3 is a schematic structural view of a turntable positioning device of the planetary shaft press-fitting tool of the present invention;

FIG. 4 is a schematic view of the position of the planet axles before press fitting;

FIG. 5 is a schematic view of the position of the planet shafts after press fitting;

the reference signs are: 1. a base; 11. a round base; 111. a left airway; 112. a right airway; 113. a gas pipe joint; 114. a left air inlet pipe; 115. a right air inlet pipe; 12. an intermediate airway; 2. a turntable; 3. a shunt seat; 31. a cavity body; 32. shunting an air passage; 33. an air distributing channel; 34. a gas-distributing duct joint; 4. a hollow bobbin creel; 41. an exhaust safety valve; 5. a telescopic rod; 51. connecting an air pipe; 52. an air pipe switch valve; 521. a fixing plate; 6. a turntable positioning device; 61. positioning seats; 62. an elastic top bead; 63. hemispherical positioning holes; 7. an annular air passage; 8. a ring-shaped seal ring; 9. a planet carrier; 91. a planet shaft; 92. a bearing inner race; 93. a bearing outer race; 94. and a planet wheel.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1-5, a planetary shaft press-fitting tool of this embodiment includes a base 1, a rotary table 2 is movably disposed on the top surface of the base 1, a round base 11 is disposed between the top surface of the base 1 and the rotary table 2, and the lower end of the round base 11 is fixedly embedded in the base 1, the upper end of the round base 11 movably penetrates through the rotary table 2, an intermediate air passage 12 is penetratingly disposed inside the round base 11, a left air passage 111 and a right air passage 112 are disposed inside the base 1, one end of the left air passage 111 and one end of the right air passage 112 are respectively connected with a left air inlet pipe 114 and a right air inlet pipe 115 through air pipe joints 113, an annular air passage 7 is further disposed on the top surface of the base 1, the other end of the left air passage 111 is communicated with the annular air passage 7, the other end of the right air passage 112 is communicated with the intermediate air passage 12, a flow dividing, and the upper end of round base 11 is located cavity body 31, the inside of reposition of redundant personnel seat 3 upper end is provided with the reposition of redundant personnel air flue 32 that is linked together with cavity body 31, middle air flue 12 is linked together with reposition of redundant personnel air flue 32 through cavity body 31, a plurality of branch air flues 33 that all are linked together with reposition of redundant personnel air flue 32 are evenly distributed along circumference on the reposition of redundant personnel seat 3, still all be provided with on the branch air flue 33 and divide air flue joint 34, a plurality of hollow form bobbin creels 4 that connect 34 one-to-one with divide air flue along circumference equipartition on the top surface of carousel 2, the upper and lower both ends of hollow form bobbin creel 4 are the opening form, it is provided with telescopic link 5 all to slide in the hollow form bobbin creel 4, all be linked together through connecting air pipe 51 between hollow form bobbin creel 4 and the corresponding branch air flue joint 34, still all be provided with trachea switch.

The top surface of the base 1 is also provided with a turntable positioning device 6, the turntable positioning device 6 comprises a positioning seat 61, the positioning seat 61 is fixedly arranged on the top surface of the base 1, an elastic top bead 62 is embedded in one side wall of the positioning seat 61, a plurality of hemispherical positioning holes 63 matched with the elastic top bead 62 are uniformly distributed on the outer circumferential wall of the turntable 2, and the number of the hemispherical positioning holes 63 is the same as that of the hollow bobbin creels 4, so that after the turntable 2 is rotated to a corresponding position on the base 1, the elastic top bead 62 can be pushed into the hemispherical positioning hole 63 at the corresponding position on the outer circumferential wall of the turntable 2, and on one hand, the position of the turntable 2 is conveniently fixed; on the other hand, the rotary table 2 is convenient to rotate to realize transposition of the hollow bobbin creel 4, the press fitting operation of the planet shaft 91 is further convenient, the axial lead of the annular air passage 7 is coincident with the axial lead of the rotary table 2, the top surface of the annular air passage 7 is flush with the top surface of the base 1, after the air is conveniently ventilated in the annular air passage 7 through the left air passage 111, the rotary table 2 can be slightly supported under the action of air pressure, the pressure generated by the rotary table 2 on the top surface of the base 1 is reduced, further, the rotary table 2 is convenient to rotate by operating personnel when being rotated, manpower and time are saved, the outer peripheral wall of the telescopic rod 5 is attached to the inner wall of the hollow bobbin creel 4, one end of the connecting air pipe 51 is connected with the air distributing passage joint 34, the other end of the connecting air pipe 51 penetrates into the hollow bobbin creel 4 below the telescopic rod 5, after the air is ventilated inside the hollow bobbin creel 4 through the, the telescopic rod 5 is lifted to the outside of the hollow bobbin creel 4 under the action of air pressure, so that the planet wheels 94 can be conveniently positioned before the planet shafts 91 are pressed, a plurality of fixing plates 521 which are in one-to-one correspondence with the air pipe switch valves 52 are fixedly arranged on the top surface of the rotary table 2, the air pipe switch valves 52 are respectively and fixedly arranged on the corresponding fixing plates 521, the fixing firmness of the air pipe switch valves 52 can be improved, whether the air pipe 51 is connected with an operator through the air pipe switch valves 52 is convenient to ventilate, the operation convenience is improved, the annular sealing rings 8 are embedded in the outer peripheral wall of the telescopic rod 5, the outer peripheral wall of each annular sealing ring 8 is in contact with the inner wall of the hollow bobbin creel 4, the sealing performance between the telescopic rod 5 and the hollow bobbin creel 4 can be improved, the mounting precision of the planet shafts 91 can be ensured, at least three hollow bobbin creels 4 are arranged, the hollow bobbin creel 4 can be arranged correspondingly according to the number of the planet wheels 94 in the planet mechanism, so that press fitting can be realized on the planet shafts 91 with different numbers, and the applicability is improved.

The working principle of the invention is as follows: before press fitting, the left air inlet pipe 114 and the right air inlet pipe 115 are firstly communicated with an air source which is separately arranged outside the base 1, the planet carrier 9 is hoisted to the planet shaft press fitting tool (on the hollow bobbin creel 4), therefore, the planet shaft hole is required to be kept to be corresponding to the telescopic rod 5, then the planet wheel 94 provided with the bearing is placed in the planet carrier 9, the bearing inner ring 92 in the planet wheel 94 is enabled to be corresponding to the telescopic rod 5 (namely, the bearing inner ring 92 and the telescopic rod 5 are coaxial), the air pipe switch valve 52 is opened, air generated by the air source connected with the right air inlet pipe 115 enters the right air passage 112 from the right air inlet pipe 115, enters the cavity body 31 through the middle air passage 12 in the round base 11, then enters the bottom in the hollow bobbin creel 4 through the diversion air passage 32, the diversion air passage 33 and the connecting air pipe 51 in sequence, and further the telescopic rod 5 is jacked to extend out of the, penetrates through the inner bearing ring 92 of the planet wheel 94, so that the planet wheel 94 and the inner bearing ring 92 can be positioned, one end of the planet shaft 91 is placed in the inner bearing ring 92, is inserted into the corresponding planet shaft hole on the top surface of the planet carrier 9 and is contacted with the telescopic rod 5 (the top surface and the bottom surface of the planet carrier 9 are both provided with a planet shaft hole with a chamfer, and because the planet shaft 91 is in interference fit with the planet shaft hole, one end of the planet shaft 91 can only be placed at the chamfer angle of the planet shaft hole), i.e. the planet shafts 91 and the telescopic rod 5 are coaxial, see the state of figure 4), after one of the planet shafts 91 is placed, the press machine is used for pressing the upper ends of the planet shafts 91, in the process of pressing down, the lower end of the planet shaft 91 can prop against the telescopic rod 5 to move downwards in the hollow bobbin creel 4 simultaneously and gradually enter the bearing inner ring 92, and the gas in the hollow bobbin creel 4 is released through the exhaust safety valve 41; when the bottom surface of the telescopic rod 5 moves downwards to be abutted against the bottom surface in the hollow bobbin creel 4, the telescopic rod 5 is completely contracted into the hollow bobbin creel 4 at the moment, so that the limiting (shown in the state of figure 5) of the planetary shaft 91 during the pressing is realized, the pressure is maintained for 5 seconds, and the press mounting of the planetary shaft 91 is completed; after the press mounting of one planet shaft 91 is finished, an operator manually rotates the rotary table 2 (the air source connected with the left air inlet pipe 114 can be opened, generated air enters the annular air passage 7 from the left air passage 111, the rotary table 2 can be slightly supported under the action of air pressure, so that the pressure generated by the rotary table 2 on the top surface of the base 1 is reduced, the operator can conveniently rotate the rotary table 2, the manpower and the time are saved), and other planet shafts 91 can be continuously placed so as to finish the press mounting of other planet shafts 91 in sequence; after the turntable 2 is rotated, the elastic ejecting balls 62 can be ejected into the hemispherical positioning holes 63 at corresponding positions on the outer circumferential wall of the turntable 2, so that the position of the rotated turntable 2 can be positioned, the installation of each planet shaft 91 is facilitated, and after all the planet shafts 91 are installed, an air source independently arranged outside the base 1 is disconnected, and the planet carrier 9 provided with the planet shafts 91 and the planet wheels 94 is lifted away from the planet shaft press-fitting tool; when the telescopic rod 5 is jacked and extends out of the hollow bobbin creel 4 to the maximum travel state: the distance between the top surface of the telescopic rod 5 and the top surface of the planet carrier 9 is equal to the chamfer length of the planet shaft hole, and the distance between the bottom surface of the telescopic rod 5 and the hollow bobbin creel 4 (namely the descending stroke of the telescopic rod 5) is equal to the difference between the length of the planet shaft 91 and the chamfer length of the planet shaft hole, so that the axial limitation of the planet shaft 91 in the pressing process can be ensured, and the assembly accuracy of the planet shaft 91 is improved (even when the bottom surface of the telescopic rod 5 moves downwards to be abutted against the bottom surface in the hollow bobbin creel 4, the telescopic rod 5 is completely contracted into the hollow bobbin creel 4 at the moment); when the planet carrier 9 has four planet wheels 94, the telescopic rod 5 and the hollow bobbin creel 4 can be correspondingly provided with four corresponding parts (meanwhile, the hemispherical positioning holes 63 are correspondingly provided with four parts so as to be convenient for accurate positioning after the rotating disc 2 is rotated), the same press fitting mode can be adopted for sequential press fitting, the planet shafts 91 needing press fitting can be transposed and sequentially installed only by rotating the rotating disc 2 in the press fitting process, and the operation is convenient.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a planet axle pressure equipment frock which characterized in that: comprises a base (1), a turntable (2) is movably arranged on the top surface of the base (1), a round base (11) is arranged between the top surface of the base (1) and the turntable (2), the lower end of the round base (11) is fixedly embedded in the base (1), the upper end of the round base (11) movably penetrates through the turntable (2), a middle air passage (12) is arranged inside the round base (11) in a penetrating manner, a left air passage (111) and a right air passage (112) are arranged inside the base (1), one end of the left air passage (111) and one end of the right air passage (112) are respectively connected with a left air inlet pipe (114) and a right air inlet pipe (115) through air pipe joints (113), an annular air passage (7) is also arranged on the top surface of the base (1), the other end of the left air passage (111) is communicated with the annular air passage (7), the other end of the right air passage (112, a shunting seat (3) is arranged on the top surface of the rotary table (2), a cavity body (31) is arranged inside the lower end of the shunting seat (3), the upper end of a round bottom seat (11) is positioned in the cavity body (31), a shunting air passage (32) communicated with the cavity body (31) is arranged inside the upper end of the shunting seat (3), an intermediate air passage (12) is communicated with the shunting air passage (32) through the cavity body (31), a plurality of shunting air passages (33) communicated with the shunting air passage (32) are uniformly distributed on the shunting seat (3) along the circumferential direction, air passage joints (34) are also arranged on the shunting air passages (33), a plurality of hollow bobbin creels (4) corresponding to the air passage joints (34) one by one are uniformly distributed on the top surface of the rotary table (2) along the circumferential direction, the upper end and the lower end of each hollow bobbin creel (4) are both in an open shape, telescopic rods (5) are arranged in, the hollow bobbin creel (4) is communicated with the corresponding air distribution channel joint (34) through a connecting air pipe (51), the connecting air pipe (51) is also provided with an air pipe switch valve (52), and the hollow bobbin creel (4) is also provided with an exhaust safety valve (41).

2. The planet shaft press fitting tool according to claim 1, characterized in that: still be provided with carousel positioner (6) on the top surface of base (1), carousel positioner (6) include positioning seat (61), positioning seat (61) are fixed to be set up on the top surface of base (1), a lateral wall of positioning seat (61) is embedded to be equipped with elasticity and pushes up pearl (62), a plurality of hemispherical locating hole (63) of pushing up pearl (62) looks adaptation with elasticity of equipartition on the outer circumferential wall of carousel (2), and the quantity of hemispherical locating hole (63) is the same with the quantity of hollow form bobbin cradle (4).

3. The planet shaft press fitting tool according to claim 1, characterized in that: the axial lead of the annular air passage (7) is superposed with the axial lead of the rotary table (2), and the top surface of the annular air passage (7) is flush with the top surface of the base (1).

4. The planet shaft press fitting tool according to claim 1, characterized in that: the outer peripheral wall of the telescopic rod (5) is attached to the inner wall of the hollow bobbin creel (4), one end of the connecting air pipe (51) is connected with the air distribution channel joint (34), and the other end of the connecting air pipe (51) penetrates through the hollow bobbin creel (4) below the telescopic rod (5).

5. The planet shaft press fitting tool according to claim 1, characterized in that: the top surface of the turntable (2) is also fixedly provided with a plurality of fixing plates (521) which are in one-to-one correspondence with the air pipe switch valves (52), and the air pipe switch valves (52) are respectively and fixedly arranged on the corresponding fixing plates (521).

6. The planet shaft press fitting tool according to claim 1, characterized in that: an annular sealing ring (8) is further embedded in the peripheral wall of the telescopic rod (5), and the peripheral wall of the annular sealing ring (8) is abutted against the inner wall of the hollow bobbin creel (4).

7. The planet shaft press fitting tool according to claim 1, characterized in that: at least three hollow bobbin creels (4) are arranged.