CN113483097B - Hydraulic gear shifting actuating mechanism of transmission - Google Patents
Hydraulic gear shifting actuating mechanism of transmission Download PDFInfo
- Publication number
- CN113483097B CN113483097B CN202110870784.3A CN202110870784A CN113483097B CN 113483097 B CN113483097 B CN 113483097B CN 202110870784 A CN202110870784 A CN 202110870784A CN 113483097 B CN113483097 B CN 113483097B
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- shaft
- reverse gear
- piston
- oil duct
- gear shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/3069—Interrelationship between two or more final output mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H2063/3079—Shift rod assembly, e.g. supporting, assembly or manufacturing of shift rails or rods; Special details thereof
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention relates to a hydraulic gear shifting actuating mechanism of a transmission, which comprises a reverse gear shaft, wherein the left end of the reverse gear shaft is connected with a left box body of a transmission in a matching way, and the right end of the reverse gear shaft is connected with a right box body of the transmission in a matching way, and the hydraulic gear shifting actuating mechanism is characterized in that: a stepped hole penetrating the axial direction is formed in the center of the reverse gear shaft, the left section of the stepped hole is a left cavity oil duct, the right section of the stepped hole is a right cavity oil duct, and a piston is arranged in the left cavity oil duct; two ends of the reverse gear shaft are respectively provided with an annular groove, the upper side part and the lower side part of the middle part of the reverse gear shaft are provided with slotted holes which correspond to each other, and the slotted holes correspond to the middle part of a piston arranged in the left cavity oil duct; the reverse gear shaft is matched with a shifting fork component, the shifting fork component is matched and connected with the reverse gear shaft and the piston through a pin shaft, and the piston can slide left and right in the left cavity oil duct and drives the shifting fork component to move left and right. The invention has the advantages of simple and compact structure, reliable gear shifting, less parts and low cost, and can effectively solve the problem of difficult arrangement in the limited space of the transmission.
Description
Technical Field
The invention relates to an automatic automobile transmission, in particular to a hydraulic gear shifting actuating mechanism of a transmission.
Background
The existing hydraulic drive gear shifting actuating mechanism of the transmission generally comprises a pair of hydraulic cylinder sleeves 2, a pair of hydraulic pistons 3 and a shifting fork assembly 1, as shown in fig. 1. In contrast, a multi-gear automatic transmission often needs to arrange four or five independent gear shifting actuating mechanisms, and the problem of difficult arrangement often exists in the limited space of the transmission.
CN 203962985U discloses a "shift actuating mechanism of a dual clutch transmission", which includes a front housing, a rear housing, at least two shift fork assemblies, and at least one connecting sleeve, wherein the at least two shift fork assemblies are installed between the front housing and the rear housing, each shift fork assembly includes a shift fork and a plunger, the plungers of the shift fork assemblies are arranged on the same straight line, and the front and rear ends of the plunger are respectively installed on the front housing and the rear housing; every two adjacent plungers are connected together through the connecting sleeve, a first hydraulic cavity is formed between one end, close to the connecting sleeve, of each plunger and the connecting sleeve, and the connecting sleeve is provided with a first oil duct communicated with the first hydraulic cavity; a second hydraulic cavity is formed between one end, close to the front shell, of the plunger connected with the front shell and the front shell, and the front shell is provided with a second oil passage communicated with the second hydraulic cavity; and a third hydraulic cavity is formed between one end, close to the rear shell, of the plunger connected with the rear shell and the rear shell, and a third oil duct communicated with the third hydraulic cavity is arranged on the rear shell. It integrates two forks together, but there is no space arrangement advantage for a transmission containing five forks.
CN 204164326U discloses a "hydraulic gear selecting and shifting actuating mechanism of a mechanical automatic transmission", a gear selecting hydraulic cylinder in a gear selecting mechanism is formed by a gear selecting shaft and a gear selecting end cover through sealing of a gear selecting sealing ring, and the gear selecting shaft is supported by a gear selecting support bushing; a gear shifting oil cylinder in the gear shifting mechanism is formed by sealing a gear shifting positioning sleeve, a gear shifting end cover and a main shell through a sleeve sealing ring, a gear shifting shaft is supported by a gear shifting support bushing, the gear shifting shaft and the gear shifting positioning sleeve are sealed by a gear shifting shaft sealing ring, a gear shifting sensor magnet is arranged on the gear shifting shaft, and a gear shifting sensor is positioned on the upper side of an upper cover; the gear shifting shaft and the gear selecting shaft are vertically arranged; the gear selecting shaft and the interlocking frame are in interference connection through a spiral elastic pin, the gear selecting shaft and the shifting head are coaxially installed in a clearance fit mode, a gear selecting sensor magnet is arranged on the interlocking frame, and the gear selecting sensor is located on the right side of the main shell; the middle bottom groove of the gear shifting shaft is in clearance fit with the upper end of the shifting head. The structure is simplified, the installation is convenient, the action is rapid and reliable, and the mechanism cost is low.
The technical solutions disclosed in the above patent documents are all useful attempts in the technical field.
Disclosure of Invention
The invention aims to provide a hydraulic gear shifting actuating mechanism of a transmission, which has the advantages of simple and compact structure, reliable gear shifting, capability of effectively solving the problem of difficult arrangement in the limited space of the transmission, less parts and low cost.
The invention relates to a hydraulic gear shifting actuating mechanism of a transmission, which comprises a reverse gear shaft, wherein the left end of the reverse gear shaft is connected with a left box body of a transmission in a matching way, and the right end of the reverse gear shaft is connected with a right box body of the transmission in a matching way, and the hydraulic gear shifting actuating mechanism is characterized in that: a stepped hole penetrating the axial direction is formed in the center of the reverse gear shaft, the left section of the stepped hole is a left cavity oil duct, the right section of the stepped hole is a right cavity oil duct, and a piston is arranged in the left cavity oil duct; two ends of the reverse gear shaft are respectively provided with an annular groove, the upper side part and the lower side part of the middle part of the reverse gear shaft are provided with slotted holes which correspond to each other, and the slotted holes correspond to the middle part of a piston arranged in the left cavity oil duct; the reverse gear shaft is matched with a shifting fork component, the shifting fork component is matched and connected with the reverse gear shaft and a piston through a pin shaft, and the piston can slide left and right in the left cavity oil duct and drives the shifting fork component to move left and right.
Furthermore, the shifting fork component consists of a shaft sleeve and a fork vertically connected with one end of the shaft sleeve, and a through hole penetrating in the radial direction is formed in the shaft sleeve; and the inner walls of the two ends of the shaft sleeve are respectively provided with a bushing and sleeved on the reverse gear shaft.
Furthermore, a through hole which is radially through is formed in the middle of the piston, the piston penetrates through the through hole in the shaft sleeve and the long round hole in the reverse gear shaft through a pin shaft to be connected with the shifting fork member, and the piston slides left and right to drive the shifting fork member to move left and right; the tail end of the pin shaft is in limiting clamping connection through a clamping ring.
Furthermore, a sealing ring is arranged in an annular groove at the left end of the reverse gear shaft and is matched and connected with a left box body of the gearbox; and a sealing ring is arranged in an annular groove at the right end of the reverse gear shaft and is matched and connected with a right box body of the gearbox.
Further, the diameter of the left cavity oil passage is larger than that of the right cavity oil passage; the left cavity oil duct is communicated with a left oil duct in the wall of the left box body, and the right cavity oil duct is communicated with a right oil duct in the wall of the right box body.
Furthermore, the piston is made of plastic.
The invention has the beneficial effects that:
the reverse shaft is designed to be a hollow structure, the hollow structure is used as a hydraulic cavity, and the shifting fork component is integrated on the reverse shaft of the transmission, so that the number of parts is reduced, the cost is reduced, the occupation of space is greatly reduced, and the arrangement is easy. Particularly for automatic transmission assemblies incorporating reverse shafts.
Drawings
Fig. 1 is a schematic diagram of a conventional hydraulic drive shift actuator.
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic structural view of the reverse shaft;
FIG. 4 is a schematic structural view of a fork;
fig. 5 is a schematic structural view of the piston.
In the figure: 1-shifting fork assembly, 2-hydraulic cylinder sleeve, and 3-hydraulic piston.
5-a reverse gear shaft, 51-an annular groove, 52-a long circular hole, 53-a left cavity oil passage and 54-a right cavity oil passage;
6-shifting fork component, 61-shaft sleeve, 62-fork, 63-through hole;
7-pin shaft, 8-bush;
9-right box body, 91-right oil duct;
10-sealing ring, 11-piston, 12-collar;
13-left box, 131-left oil gallery.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 2, 3, 4 and 5, the hydraulic gear shifting actuator for a transmission comprises a reverse shaft 5, wherein the left end of the reverse shaft is connected with a left box body 13 of the transmission in a matching manner, and the right end of the reverse shaft is connected with a right box body 9 of the transmission in a matching manner, and the hydraulic gear shifting actuator is characterized in that: a stepped hole penetrating through the axial direction is formed in the center of the reverse shaft 5, the left section of the stepped hole is a left cavity oil passage 53, the right section of the stepped hole is a right cavity oil passage 54, and a piston 11 is arranged in the left cavity oil passage 53; two ends of the reverse gear shaft 5 are respectively provided with an annular groove 51, the upper side and the lower side of the middle part of the reverse gear shaft are respectively provided with a long circular hole 52 which correspond to each other, and the long circular holes 52 correspond to the middle part of the piston 11 arranged in the left cavity oil channel 53; the reverse shaft 5 is matched with a shifting fork member 6, the shifting fork member 6 is matched and connected with the reverse shaft 5 and a piston 11 through a pin shaft 7, and the piston can slide left and right in the left cavity oil duct and drives the shifting fork member 6 to move left and right.
The shifting fork component 6 is composed of a shaft sleeve 61 and a fork 62 vertically connected with one end of the shaft sleeve, and a through hole 63 penetrating in the radial direction is formed in the shaft sleeve 61; the inner walls of the two ends of the shaft sleeve 61 are respectively provided with a bushing 8 and sleeved on the reverse gear shaft 5.
A through hole 111 which is radially penetrated is formed in the middle of the piston 11, the piston 11 penetrates through the through hole 63 in the shaft sleeve 61 and the long round hole 52 in the reverse gear shaft 5 through the pin shaft 7 to be connected with the shifting fork member 6, and the piston slides left and right to drive the shifting fork member to move left and right; the tail end of the pin shaft 7 is limited and clamped through a clamping ring 12; to prevent removal.
A sealing ring 10 is arranged in an annular groove 51 at the left end of the reverse gear shaft 5 and is matched and connected with a left box body 13 of the gearbox; a sealing ring 10 is arranged in an annular groove 51 at the right end of the reverse gear shaft 5 and is matched and connected with a right box body 9 of the gearbox.
The diameter of the left chamber oil passage 53 is larger than the diameter of the right chamber oil passage 54; the left chamber oil passage 53 communicates with a left oil passage 131 in the wall of the left tank 13, and the right chamber oil passage 54 communicates with a right oil passage 91 in the wall of the right tank 9.
The piston 11 is made of plastic.
The hydraulic gear shifting actuating mechanism has the working process that hydraulic oil of the transmission enters the left cavity oil duct 53 through the left oil duct 131 on the left box body 13, the hydraulic oil pushes the piston 11 to move rightwards, and the piston 11 drives the shifting fork member 6 to move rightwards simultaneously under the connecting action of the pin shaft 7 to complete gear shifting. Similarly, the hydraulic oil enters the right chamber oil passage 54 in the reverse shaft 5 from the right oil passage 91 of the right box 9, and the hydraulic oil pushes the piston 11 to move leftwards, so that the gear shifting action is completed.
Claims (6)
1. The utility model provides a derailleur hydraulic pressure actuating mechanism that shifts, includes reverse shaft (5), the left end of reverse shaft is connected, the right-hand member is connected characterized by with the right box (9) cooperation of the right box (9) of gearbox in the cooperation of left box (13) of gearbox: a stepped hole which penetrates through the axial direction is formed in the center of the reverse shaft (5), the left section of the stepped hole is a left cavity oil duct (53), the right section of the stepped hole is a right cavity oil duct (54), and a piston (11) is arranged in the left cavity oil duct (53); two ends of the reverse gear shaft (5) are respectively provided with an annular groove (51), the upper side part and the lower side part of the middle part of the reverse gear shaft are provided with long round holes (52) which correspond to each other, and the long round holes (52) correspond to the middle part of a piston (11) arranged in a left cavity oil duct (53); the reverse gear shaft (5) is matched with a shifting fork component (6), the shifting fork component (6) is matched and connected with the reverse gear shaft (5) and a piston (11) through a pin shaft (7), and the piston can slide left and right in the left cavity oil duct and drives the shifting fork component (6) to move left and right.
2. The transmission hydraulic shift actuator of claim 1, wherein: the shifting fork component (6) is composed of a shaft sleeve (61) and a fork (62) vertically connected with one end of the shaft sleeve, and a through hole (63) penetrating in the radial direction is formed in the shaft sleeve (61); and the inner walls at the two ends of the shaft sleeve (61) are respectively provided with a bushing (8) which is sleeved on the reverse gear shaft (5).
3. The transmission hydraulic shift actuator of claim 2, wherein: a through hole (111) which is through in the radial direction is formed in the middle of the piston (11), the piston (11) penetrates through a through hole (63) in the shaft sleeve (61) and a long circular hole (52) in the reverse gear shaft (5) through a pin shaft (7) to be connected with a shifting fork component (6), and the piston slides left and right to drive the shifting fork component to move left and right; the tail end of the pin shaft (7) is in limited clamping connection through a clamping ring (12).
4. The transmission hydraulic shift actuator of claims 1 or 2, wherein: a sealing ring (10) is arranged in an annular groove (51) at the left end of the reverse gear shaft (5) and is matched and connected with a left box body (13) of the gearbox; a sealing ring (10) is arranged in an annular groove (51) at the right end of the reverse gear shaft (5) and is connected with a right box body (9) of the gearbox in a matching way.
5. The transmission hydraulic shift actuator of claims 1 or 2, wherein: the diameter of the left cavity oil passage (53) is larger than that of the right cavity oil passage (54); the left cavity oil duct (53) is communicated with a left oil duct (131) in the wall of the left box body (13), and the right cavity oil duct (54) is communicated with a right oil duct (91) in the wall of the right box body (9).
6. A transmission hydraulic shift actuator as claimed in claim 1 or claim 2 wherein: the piston (11) is made of plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110870784.3A CN113483097B (en) | 2021-07-30 | 2021-07-30 | Hydraulic gear shifting actuating mechanism of transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110870784.3A CN113483097B (en) | 2021-07-30 | 2021-07-30 | Hydraulic gear shifting actuating mechanism of transmission |
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| Publication Number | Publication Date |
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| CN113483097A CN113483097A (en) | 2021-10-08 |
| CN113483097B true CN113483097B (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110870784.3A Active CN113483097B (en) | 2021-07-30 | 2021-07-30 | Hydraulic gear shifting actuating mechanism of transmission |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483818A (en) * | 2021-12-09 | 2022-05-13 | 中国船舶重工集团公司第七0三研究所 | Hydraulic control shifting fork capable of pushing high-speed rotating part |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1122274A (en) * | 1966-01-21 | 1968-08-07 | Brown Tractors Ltd | An improved gear selector mechanism |
| JPS4877256A (en) * | 1972-01-24 | 1973-10-17 | ||
| JPH01153848A (en) * | 1987-12-10 | 1989-06-16 | Kubota Ltd | Operating structure for travelling of working vehicle |
| WO2009015963A1 (en) * | 2007-07-27 | 2009-02-05 | Schaeffler Kg | Device for actuating a shifting element |
| DE102008004497A1 (en) * | 2008-01-16 | 2009-07-23 | Schaeffler Kg | Shifting device for gear change transmission, has rod guided through chamber in pressure-tight manner and surface provided in chamber, where surface stays in effective connection with rod and subjectable with medium in sealed manner |
| CN202280826U (en) * | 2011-09-29 | 2012-06-20 | 大连新翔机械有限公司 | Hydraulically-controlled speed change mechanism |
| CN102606729A (en) * | 2010-12-23 | 2012-07-25 | 格特拉克·福特传动系统有限公司 | Gearbox for motor vehicle |
| CN105465358A (en) * | 2015-12-31 | 2016-04-06 | 天津萨克赛斯机械技术开发有限公司 | Hydraulic shifting mechanism of gearbox |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006029441A (en) * | 2004-07-15 | 2006-02-02 | Nissan Motor Co Ltd | Position detecting device of shift fork |
| DE102006006868A1 (en) * | 2006-02-15 | 2007-08-16 | Zf Friedrichshafen Ag | Switching device for switching a motor vehicle transmission |
| FR2975744B1 (en) * | 2011-05-25 | 2013-11-22 | Peugeot Citroen Automobiles Sa | DEVICE FOR DISPLACEMENT CONTROL IN TRANSLATION OF A SPEED FORWARD FOR A GEARBOX OF A MOTOR VEHICLE |
| DE102015221999A1 (en) * | 2015-11-09 | 2017-05-11 | Zf Friedrichshafen Ag | Arrangement for actuating at least one switching element |
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2021
- 2021-07-30 CN CN202110870784.3A patent/CN113483097B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1122274A (en) * | 1966-01-21 | 1968-08-07 | Brown Tractors Ltd | An improved gear selector mechanism |
| JPS4877256A (en) * | 1972-01-24 | 1973-10-17 | ||
| JPH01153848A (en) * | 1987-12-10 | 1989-06-16 | Kubota Ltd | Operating structure for travelling of working vehicle |
| WO2009015963A1 (en) * | 2007-07-27 | 2009-02-05 | Schaeffler Kg | Device for actuating a shifting element |
| DE102008004497A1 (en) * | 2008-01-16 | 2009-07-23 | Schaeffler Kg | Shifting device for gear change transmission, has rod guided through chamber in pressure-tight manner and surface provided in chamber, where surface stays in effective connection with rod and subjectable with medium in sealed manner |
| CN102606729A (en) * | 2010-12-23 | 2012-07-25 | 格特拉克·福特传动系统有限公司 | Gearbox for motor vehicle |
| CN202280826U (en) * | 2011-09-29 | 2012-06-20 | 大连新翔机械有限公司 | Hydraulically-controlled speed change mechanism |
| CN105465358A (en) * | 2015-12-31 | 2016-04-06 | 天津萨克赛斯机械技术开发有限公司 | Hydraulic shifting mechanism of gearbox |
Non-Patent Citations (1)
| Title |
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| 张波等.拉板式变速箱换挡拨头总成的改进.《汽车实用技术》.2017,(第19期), * |
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