CN203374748U - Mechanical reversing mechanism of hydrodynamic transmission case - Google Patents
Mechanical reversing mechanism of hydrodynamic transmission case Download PDFInfo
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- CN203374748U CN203374748U CN201320312868.6U CN201320312868U CN203374748U CN 203374748 U CN203374748 U CN 203374748U CN 201320312868 U CN201320312868 U CN 201320312868U CN 203374748 U CN203374748 U CN 203374748U
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- output gear
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- splined shaft
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Abstract
The utility model discloses a mechanical reversing mechanism of a hydrodynamic transmission case. The mechanical reversing mechanism of the hydrodynamic transmission case comprises a first-level power output gear, a second-level power output gear, a reversing spline shaft and a piston mechanism, wherein the reversing spline shaft is alternatively matched with the first-level power output gear and the second-level power output gear respectively through splines, and the reversing spline shaft is assembled in a floating mode, namely, the meshed gears are switched through axial motions of the reversing spline shaft. The reversing spline shaft is driven through the piston mechanism to move axially and is connected with the piston mechanism in an adapting mode through a self-aligning bearing. Not only are respective motion requirements met, but also the installation error between a piston and the reversing spline shaft is compensated.
Description
Technical field
The utility model relates to a kind of hydraulic transmission gear box mechanical reversing mechanism.
Background technique
Current domestic hydraulic transmission gear box adopts the hydraulic changeover mode mostly, must be comprised of two hydraulic axis, certainly will cause the increase of transmission case volume, number of spare parts and cost; Owing to being comprised of two hydraulic axis, during operation, the overwhelming majority time only has the work of a hydraulic axis composition, and air blast and frictional loss are larger like this, and efficiency is low.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of mechanical reversing mechanism of realizing moment of torsion transmission change by the commutation splined shaft that floats.
For reaching above purpose, be achieved through the following technical solutions:
A kind of hydraulic transmission gear box mechanical reversing mechanism comprises: one-level power output gear, second motive force output gear, commutation splined shaft and piston mechanism; One-level power output gear and second motive force output gear are fixed in the hydraulic transmission gear box box house by bearing and bearing grips, and the one-level power output gear is identical with second motive force output gear central shaft hole size; One-level power output gear central shaft hole inwall is processed with the one-level matching spline; Second motive force output gear central shaft hole inwall is processed with the secondary matching spline, and above-mentioned secondary matching spline is identical with the one-level matching spline; The commutation splined shaft is installed on one-level power output gear and second motive force output gear central shaft hole place, be that one-level power output gear and second motive force output gear are placed on the commutation splined shaft, and be processed with the splined surfaces shaft shoulder that can mesh with one-level matching spline and secondary matching spline on the commutation splined shaft; Commutation splined shaft one end is connected with hydraulic transmission gear box power input mechanism output terminal, and the other end and piston mechanism are connected and fixed; Piston mechanism comprises: be fixed in the hydraulic transmission gear box box house piston body, be arranged at the piston of piston body inside and fixing and axially stretch out in the piston rod of piston body with piston; Piston body is processed with and fills drainage body runner I and fill drainage body runner II, and fills drainage body runner I and fill drainage body runner II and be communicated with two Seal cages that piston body internal piston chamber are separated to form by piston respectively; Piston rod is coaxial with commutation splined shaft center; The piston rod retractable ends has been mounted with selfaligning bearing (being that piston rod is connected and fixed by ring in clamping bolt and selfaligning bearing) by clamping bolt, and selfaligning bearing coordinates the non-power intake of the commutation splined shaft section that is fixed on (splined shaft that commutates coordinates with the selfaligning bearing outer shroud and fixes by bearing gland and bolt) with bolt by bearing gland, be piston rod and commutation splined shaft transmitting torque not, and can power transmission stretching power;
What adopt this kind of structure hydraulic transmission gear box power input mechanism and commutation splined shaft is connected the input that guarantees moment of torsion;
Original state: the splined surfaces shaft shoulder of commutation splined shaft and the engagement of one-level matching spline, the splined shaft that commutates drives the one-level power output gear and rotates (now piston mechanism is the first positioning states, fills drainage body runner I injection pressure fluid);
Mechanical commutation: fill drainage body runner II injection pressure fluid, fill drainage body runner I head pressure fluid, and then piston moves, and then the piston rod moving belt is moved to splined shaft and is moved, impel the splined surfaces shaft shoulder and the engagement of secondary matching spline of commutation splined shaft, the splined shaft that commutates drives the second motive force output gear and rotates (now piston mechanism is the second positioning states, fills drainage body runner II injection pressure fluid);
Disengage to smooth property in engagement process for ease of spline and the spline on one-level power output gear or second motive force output gear on the commutation splined shaft, plane of inclination is processed in the end of spline engagement place external splines and internal spline, from the tooth root to the tooth top by the R smooth transition to r, spline adopts the involute form.
Piston mechanism also comprises: Compress Spring and rolling element, the piston body inwall radially is processed with the groove that holds Compress Spring and the rolling element upstream space is provided, piston radial is processed with one-level positioning ring groove and secondary positioning ring groove, and the one-level positioning ring groove is all the relative beveled walls to medium dip (adopt inclined-plane to be mainly used in driving the up action of rolling element, descending action is realized by Compress Spring) with the annular groove section two side of secondary positioning ring groove, one-level positioning ring groove and secondary positioning ring groove center distance equal the spacing at one-level matching spline and secondary matching spline center, adopt this kind of structure to pass through Compress Spring, but rolling element and groove form resetting positioning mechanism, the i.e. movement by piston realizes that one-level positioning ring groove and secondary positioning ring groove are alternately with the rolling element location of depressing (being that rolling element embeds one-level positioning ring groove or secondary positioning ring groove), and the splined surfaces shaft shoulder and one-level matching spline and the secondary matching spline engagement transmitting torque of the splined shaft that commutates are just in time mated in the position that can guarantee one-level positioning ring groove and secondary positioning ring groove, rolling element coordinates with the one-level positioning ring groove orientates piston mechanism the first positioning states as, and rolling element coordinates with the secondary positioning ring groove orientates piston mechanism the second positioning states as,
Commutation splined shaft and hydraulic transmission gear box power input mechanism output terminal Placement adopt the spline joint transmitting torque, by at commutation spline machining external splines, with the spline housing of hydraulic transmission gear box power input mechanism output shaft, coordinating transmitting torque, adopt this kind of Placement be mainly used in guaranteeing that the moment of torsion transmission is stable and commutate splined shaft not vertically occurrence positions skew in the translation process.
To sum up the utility model adopts mechanical commutation for small-power grade hydraulic transmission gear box, can reduce air blast and frictional loss, raises the efficiency, and reduces the transmission case volume.This changement compact structure, adopt the commutation splined shaft that floats, and selfaligning bearing is separated two kinds of different manner of execution, and the locking mechanism of piston position etc. has increased reliability of structure.In addition, the inside and outside spline end face at spline fitted place adopts rounding and leaning structure to be beneficial to the smooth property of commutation process.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of specification, and for above and other purpose of the present utility model, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
The accompanying drawing explanation
The utility model is totally 3 width accompanying drawings, wherein:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is spline of the present utility model junction external splines end-face structure schematic diagram.
Fig. 3 is spline of the present utility model junction internal spline end-face structure schematic diagram.
In figure: 1, one-level power output gear, 1.1, the one-level matching spline, 2, the second motive force output gear, 2.1, secondary matching spline 2.1,3, commutation splined shaft, 3.1, the splined surfaces shaft shoulder, 4, piston mechanism, 5, piston body, 5.1, fill drainage body runner I, 5.2, fill drainage body runner II, 6, piston, 7, piston rod, 8, clamping bolt, 9, selfaligning bearing, 10, bearing gland, 11, Compress Spring, 12, rolling element, 13, groove, 14, one-level positioning ring groove, 15, secondary positioning ring groove, 16, external splines, 17, spline housing.
Embodiment
A kind of hydraulic transmission gear box mechanical reversing mechanism as shown in Figure 1 comprises: one-level power output gear 1, second motive force output gear 2, commutation splined shaft 3 and piston mechanism 4; One-level power output gear 1 and second motive force output gear 2 are fixed in the hydraulic transmission gear box box house by bearing and bearing grips, and one-level power output gear 1 is identical with second motive force output gear 2 central shaft hole sizes; One-level power output gear 1 central shaft hole inwall is processed with one-level matching spline 1.1; Second motive force output gear 2 central shaft hole inwalls are processed with secondary matching spline 2.1, and above-mentioned secondary matching spline 2.1 is identical with one-level matching spline 1.1; Commutation splined shaft 3 is installed on one-level power output gear 1 and second motive force output gear 2 central shaft hole places, be that one-level power output gear 1 and second motive force output gear 2 are placed on commutation splined shaft 3, and be processed with the splined surfaces shaft shoulder 3.1 that can mesh with one-level matching spline 1.1 and secondary matching spline 2.1 on commutation splined shaft 3; Commutation splined shaft 3 one ends are connected with hydraulic transmission gear box power input mechanism output terminal, and the other end and piston mechanism 4 are connected and fixed; Piston mechanism 4 comprises: be fixed in the hydraulic transmission gear box box house piston body 5, be arranged at the piston 6 of piston body 5 inside and fixing and axially stretch out in the piston rod 7 of piston body 5 with piston 6; Piston body 5 is processed with and fills drainage body runner I 5.1 and fill drainage body runner II 5.2, and fills drainage body runner I 5.1 and fill drainage body runner II 5.2 and be communicated with two Seal cages that piston body 5 internal piston chambeies are separated to form by piston 6 respectively; Piston rod 7 is coaxial with commutation splined shaft 3 centers; It is that piston rod 7 is connected and fixed by clamping bolt 8 and the interior ring of selfaligning bearing 9 that piston rod 7 retractable ends have been mounted with selfaligning bearing 9(by clamping bolt 8), and selfaligning bearing 9 coordinates the non-power intake of commutation splined shaft 3 section that is fixed on (splined shaft 3 that commutates coordinates with selfaligning bearing 9 outer shrouds and fixes by bearing gland 10 and bolt) with bolt by bearing gland 10, be piston rod 7 and commutation splined shaft 3 transmitting torque not, and can power transmission stretching power;
What adopt this kind of structure hydraulic transmission gear box power input mechanism and commutation splined shaft 3 is connected the input that guarantees moment of torsion;
Original state: the splined surfaces shaft shoulder 3.1 of commutation splined shaft 3 and 1.1 engagements of one-level matching spline, the splined shaft 3 that commutates drives one-level power output gear 1 and rotates (now piston mechanism 4 is the first positioning states, fills drainage body runner I 5.1 injection pressure fluids);
Mechanical commutation: fill drainage body runner II 5.2 injection pressure fluids, fill drainage body runner I 5.1 head pressure fluids, and then piston 6 moves, and then piston rod 7 moving belts are moved to splined shaft 3 and are moved, impel the splined surfaces shaft shoulder 3.1 and 2.1 engagements of secondary matching spline of commutation splined shaft 3, the splined shaft 3 that commutates drives second motive force output gear 2 and rotates (now piston mechanism 4 is the second positioning states, fills drainage body runner II 5.2 injection pressure fluids);
As shown in Figures 2 and 3, disengage to smooth property in engagement process for ease of spline and the spline on one-level power output gear 1 or second motive force output gear 2 on commutation splined shaft 3, plane of inclination is processed in the end of spline engagement place external splines and internal spline, from the tooth root to the tooth top by the R smooth transition to r, spline adopts the involute form.
Commutation splined shaft 3 rotation in this changement, piston is only made linearly operating repeatedly, between the two by selfaligning bearing 9 assembly connections, realizes action request separately, but the alignment error of compensating piston and commutation splined shaft again.
Piston mechanism 4 as shown in Figure 1 also comprises: Compress Spring 11 and rolling element 12, piston body 5 inwalls radially are processed with the groove 13 that holds Compress Spring 11 and rolling element 12 upstream spaces are provided, piston 6 radially is processed with one-level positioning ring groove 14 and secondary positioning ring groove 15, and one-level positioning ring groove 14 is all the relative beveled walls to medium dip (adopt inclined-plane to be mainly used in driving the up action of rolling element 12, descending action is realized by Compress Spring 11) with the annular groove section two side of secondary positioning ring groove 15, one-level positioning ring groove 14 and secondary positioning ring groove 15 center distance equal the spacing at one-level matching spline 1.1 and secondary matching spline 2.1 centers, adopt this kind of structure by Compress Spring 11, but rolling element 12 and groove 13 form resetting positioning mechanism, the i.e. movement by piston 6 realizes that one-level positioning ring groove 14 and secondary positioning ring groove 15 replace with rolling element 12 location of depressing (being that rolling element 12 embeds one-level positioning ring groove 14 or secondary positioning ring grooves 15), and the splined surfaces shaft shoulder 3.1 and one-level matching spline 1.1 and secondary matching spline 2.1 engagement transmitting torques of the splined shaft 3 that commutates are just in time mated in the position that can guarantee one-level positioning ring groove 14 and secondary positioning ring groove 15, rolling element 12 coordinates with one-level positioning ring groove 14 orientates piston mechanism 4 first positioning states as, and rolling element 12 coordinates with secondary positioning ring groove 15 orientates piston mechanism 4 second positioning states as,
Commutation splined shaft 3 adopts the spline joint transmitting torque with hydraulic transmission gear box power input mechanism output terminal Placement, by at commutation splined shaft 3 processing external spliness 16, with the spline housing 17 of hydraulic transmission gear box power input mechanism output shaft, coordinating transmitting torque, adopt this kind of Placement be mainly used in guaranteeing that the moment of torsion transmission is stable and commutate splined shaft 3 not vertically occurrence positions skew in the translation process (guaranteeing commutation splined shaft 3 stability of strutting system).
To sum up the utility model adopts mechanical commutation for small-power grade hydraulic transmission gear box, can reduce air blast and frictional loss, raises the efficiency, and reduces the transmission case volume.This changement compact structure, adopt the commutation splined shaft that floats, and selfaligning bearing is separated two kinds of different manner of execution, and the locking mechanism of piston position etc. has increased reliability of structure.In addition, the inside and outside spline end face at spline fitted place adopts rounding and leaning structure to be beneficial to the smooth property of commutation process.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, any those skilled in the art are not within breaking away from the technical solutions of the utility model scope, appeal when utilizing the equivalent embodiment that the technology contents disclosed is made a little change or is modified to equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, foundation technical spirit of the present utility model is to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (3)
1. a hydraulic transmission gear box mechanical reversing mechanism, is characterized in that: comprise one-level power output gear (1), second motive force output gear (2), commutation splined shaft (3) and piston mechanism (4); Described one-level power output gear (1) and second motive force output gear (2) are fixed in the hydraulic transmission gear box box house by bearing and bearing grips, and one-level power output gear (1) is identical with second motive force output gear (2) central shaft hole size; Described one-level power output gear (1) central shaft hole inwall is processed with one-level matching spline (1.1); Described second motive force output gear (2) central shaft hole inwall is processed with secondary matching spline (2.1), and above-mentioned secondary matching spline (2.1) is identical with one-level matching spline (1.1); Described commutation splined shaft (3) is installed on one-level power output gear (1) and second motive force output gear (2) central shaft hole place, be that one-level power output gear (1) and second motive force output gear (2) are placed on commutation splined shaft (3) above, and be processed with the splined surfaces shaft shoulder (3.1) that can mesh with one-level matching spline (1.1) and secondary matching spline (2.1) on commutation splined shaft (3); Described commutation splined shaft (3) one ends are connected with hydraulic transmission gear box power input mechanism output terminal, and the other end and piston mechanism (4) are connected and fixed;
Described piston mechanism (4) comprising: be fixed in the hydraulic transmission gear box box house piston body (5), be arranged at the inner piston (6) of piston body (5) and fixing and axially stretch out in the piston rod (7) of piston body (5) with piston (6); Described piston body (5) is processed with and fills drainage body runner I (5.1) and fill drainage body runner II (5.2), and described fill drainage body runner I (5.1) and fill drainage body runner II (5.2) with two Seal cages that piston body (5) internal piston chamber are separated to form by piston (6), be communicated with respectively; Described piston rod (7) is coaxial with commutation splined shaft (3) center; Described piston rod (7) retractable ends has been mounted with selfaligning bearing (9) by clamping bolt (8), and described selfaligning bearing (9) coordinates by bearing gland (10) the non-power intake of commutation splined shaft (3) section that is fixed on bolt, be described piston rod (7) and the not transmitting torque of splined shaft (3) that commutates, and can power transmission stretching power.
2. a kind of hydraulic transmission gear box mechanical reversing mechanism according to claim 1, it is characterized in that: described piston mechanism (4) also comprises: Compress Spring (11) and rolling element (12); Described piston body (5) inwall radially is processed with the groove (13) that holds Compress Spring (11) and rolling element (12) upstream space is provided; Described piston (6) radially is processed with one-level positioning ring groove (14) and secondary positioning ring groove (15), and described one-level positioning ring groove (14) is all the relative beveled walls to medium dip with the annular groove section two side of secondary positioning ring groove (15); Described one-level positioning ring groove (14) and secondary positioning ring groove (15) center distance equal the spacing at one-level matching spline (1.1) and secondary matching spline (2.1) center.
3. a kind of hydraulic transmission gear box mechanical reversing mechanism according to claim 1, it is characterized in that: described commutation splined shaft (3) adopts the spline joint transmitting torque with hydraulic transmission gear box power input mechanism output terminal Placement, by commutation splined shaft (3) processing external splines (16), with the spline housing (17) of hydraulic transmission gear box power input mechanism output shaft, coordinating transmitting torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320312868.6U CN203374748U (en) | 2013-05-30 | 2013-05-30 | Mechanical reversing mechanism of hydrodynamic transmission case |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320312868.6U CN203374748U (en) | 2013-05-30 | 2013-05-30 | Mechanical reversing mechanism of hydrodynamic transmission case |
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| CN203374748U true CN203374748U (en) | 2014-01-01 |
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| CN201320312868.6U Expired - Lifetime CN203374748U (en) | 2013-05-30 | 2013-05-30 | Mechanical reversing mechanism of hydrodynamic transmission case |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267102A (en) * | 2013-05-30 | 2013-08-28 | 中国北车集团大连机车研究所有限公司 | Hydrodynamic transmission case mechanical reversing mechanism |
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2013
- 2013-05-30 CN CN201320312868.6U patent/CN203374748U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267102A (en) * | 2013-05-30 | 2013-08-28 | 中国北车集团大连机车研究所有限公司 | Hydrodynamic transmission case mechanical reversing mechanism |
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Legal Events
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| C14 | Grant of patent or utility model | ||
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Address after: 116021 Shahekou, Liaoning, China No. 49 The Strip Patentee after: CRRC DALIAN INSTITUTE Co.,Ltd. Address before: 116021 Shahekou, Liaoning, China No. 49 The Strip Patentee before: CNR DALIAN LOCOMOTIVE RESEARCH INSTITUTE Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |