CN202708037U - Novel auxiliary box three-position air cylinder execution mechanism - Google Patents
Novel auxiliary box three-position air cylinder execution mechanism Download PDFInfo
- Publication number
- CN202708037U CN202708037U CN2012203051181U CN201220305118U CN202708037U CN 202708037 U CN202708037 U CN 202708037U CN 2012203051181 U CN2012203051181 U CN 2012203051181U CN 201220305118 U CN201220305118 U CN 201220305118U CN 202708037 U CN202708037 U CN 202708037U
- Authority
- CN
- China
- Prior art keywords
- piston
- cylinder
- air chamber
- odd
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
-
- 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
- F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
- F16H61/0009—Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units
-
- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H2059/6807—Status of gear-change operation, e.g. clutch fully engaged
-
- 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
- F16H2061/307—Actuators with three or more defined positions, e.g. three position servos
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model provides a novel auxiliary box three-position air-cylinder execution mechanism, which comprises a shifting fork shaft, an air cylinder, a first piston, a second piston and a third piston; the first piston and the second piston are fixed on the shifting fork shaft; the first piston, the second piston and the third piston are positioned in an air chamber of the air cylinder, and the outer ring of the second piston and the inner ring of the third piston are matched in a sealing manner; the diameter of the first piston is larger than that of the second piston and smaller than that of the third piston; and the air chamber of the air cylinder is step-shaped, wherein the outer ring of the first piston is matched with the inner wall at one end with smaller diameter in the step-shaped air chamber, and the outer ring of the third piston is matched with the inner wall at one end with larger diameter in the step-shaped air chamber in a sealing manner. According to the utility model, the three pistons with different outer diameters are arranged in the air cylinder of the execution mechanism, the middle position of the auxiliary box air cylinder is realized by controlling the air chambers at two sides to inflate air simultaneously and utilizing different sectional areas of the air cylinder, and high-gear and low-gear positions can be realized by controlling the air chambers at two sides to independently inflate air; and the using requirements when a rear-mounted power takeoff is arranged on a variable speed gear in a matching manner can be met.
Description
[technical field]
The utility model relates to the AE field, particularly a kind of novel odd-side three position cylinder actuators.
[background technique]
In fields such as engineering machinery and special cars, often need speed changer to carry power take-off satisfying the power taking requirement of car load additional device, the power take-off of the various ways such as existing two jack shaft series mechanical formula speed changers can be equipped preposition, rearmounted according to the specific (special) requirements of various special-purpose vehicles, side, the end are put.
For automatic mechanical transmission (hereinafter to be referred as AMT), because (inertia brake is installed in power taking position, the end in the restriction of structure, the input speed sensor is installed in side-draw power position), use generally speaking rearmounted power take-off, namely from the power taking of odd-side jack shaft, in order to satisfy the usage requirement of force taking of parking, need the odd-side cylinder can realize the neutral position.
The usage requirement that the common neutral position cylinder that existing machinery formula speed changer uses and supercharging type neutral position cylinder all can not satisfy AMT mainly is to arrange relevant solenoid valve and displacement transducer.
[model utility content]
The purpose of this utility model provides a kind of novel odd-side three position cylinder actuators, to solve the problems of the technologies described above.
To achieve these goals, the utility model adopts following technological scheme:
A kind of novel odd-side three position cylinder actuators comprise declutch shift shaft, cylinder, first piston, the second piston and the 3rd piston; First piston and the second piston are fixed on the declutch shift shaft; First piston, the second piston and the 3rd piston are positioned at the air chamber of cylinder, and the inner ring of the outer ring of the second piston and the 3rd piston is sealed and matched; The diameter of first piston is greater than the diameter of the second piston, and less than the diameter of the 3rd piston; The air chamber of cylinder is stepped ramp type, and the end inner wall sealing that diameter is less in the outer ring of first piston and the stepped ramp type air chamber cooperates, and the end inner wall sealing that diameter is larger in the outer ring of the 3rd piston and the stepped ramp type air chamber cooperates.
The utility model further improves and is: form left air chamber between first piston and the cylinder left side, form right air chamber between the second piston and the 3rd piston and the cylinder right side; Form middle gas chamber between first piston and the second piston, this middle gas chamber is communicated with atmosphere; Left air chamber is connected with the left side gas circuit, and this left side gas circuit is connected with the first solenoid valve of controller inflation; Right air chamber is connected with the right side gas circuit, and this right side gas circuit is connected with the second solenoid valve of controller inflation.
The utility model further improves and is: be provided with the spacer that is fixed on the declutch shift shaft between first piston and the second piston; Declutch shift shaft cooperates with cylinder seal; First piston and the second piston and declutch shift shaft are sealed and matched; First piston, spacer and the second piston are fixed in declutch shift shaft one end by nut, nut is connected with the displacement transducer guide rod by screw thread, the displacement transducer guide rod has the sensor magnet ring away from an end cover of nut, and the sensor magnet ring is fixed on the displacement transducer guide rod by the magnet ring top cover; The odd-side cylinder head fixedly is stamped in the sealing of cylinder right-hand member, has the gap between sensor magnet ring and the odd-side cylinder head, and the sensor magnet ring is connected and fixed on the displacement transducer on the odd-side cylinder head; Magnet ring top cover and displacement transducer guide rod all have endoporus, also have the uniform hole of some connection endoporus on the displacement transducer guide rod wall.
The utility model further improves and is: breather plug is installed on the cylinder, and breather plug is communicated with middle gas chamber.
The utility model further improves and is: axle journal place, cylinder left side is equipped with self-locking device, and this self-locking device is comprised of spring top cover, self-locking spring and self-locking steel ball, and spring top cover is threaded connection on the cylinder; Groove corresponding on self-locking steel ball and the declutch shift shaft matches.
The utility model further improves and is: described the 3rd piston comprises the first continuous cylinder and the second cylinder, and the first cylinder is identical with the internal diameter of the second cylinder; The first cylinder of the outer ring of the second piston and the 3rd piston and the second cylinder inner ring are sealed and matched; The external diameter of the first cylinder is less than the external diameter of the second cylinder, and less than the internal diameter of the less end of diameter in the stepped ramp type air chamber; The end inner wall sealing that diameter is larger in the outer ring of the second cylinder of the 3rd piston and the stepped ramp type air chamber cooperates.
The utility model further improves and is: the first solenoid valve and the second solenoid valve are the two-bit triplet solenoid valve.
With respect to prior art, the utlity model has following advantage: three pistons that external diameter is different are arranged in the utility model actuator cylinder, inflate simultaneously by control both sides air chamber, utilize the difference of cylinder sectional area, can realize odd-side cylinder neutral position, inflate separately by control both sides air chamber, can realize the high and low shift position; This Novel air cylinder actuator can satisfy the usage requirement of the rearmounted power take-off of coupling on the mechanical transmission.
The control of the utility model gas circuit is simple, only needs two suction ports to get final product, and suction pressure can equate that equally matched shelves sequencing is not prone to misoperation yet;
The utility model versatility is good, can either satisfy the use of AMT, can satisfy the usage requirement of mechanical transmission again, and has W/O PTO all can use this cylinder actuating mechanism;
The utility model easy accessibility is convenient to maintenance;
The utility model is simple in structure, reliable performance.
[description of drawings]
Fig. 1 is the utility model cylinder actuating mechanism plan view;
Fig. 2 is the utility model cylinder actuating mechanism plan view;
Fig. 3 is the utility model cylinder actuating mechanism gear self-locking figure;
Fig. 4 is the solenoid valve connection diagram;
Fig. 5 is the utility model cylinder actuating mechanism three key plan; Wherein Fig. 5 (a) for odd-side is positioned at high-grade zone position schematic representation; Fig. 5 (b) is arranged in bay zone position schematic representation for odd-side; Fig. 5 (c) is low-grade zone position schematic representation for odd-side is positioned at.
[embodiment]
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail.
The utility model discloses a kind of novel odd-side three position cylinder actuators, and cloth is set up corresponding solenoid valve group and displacement transducer; Can realize odd-side cylinder neutral position by activating simultaneously two solenoid valves, thereby realize force taking of parking.
A kind of novel odd-side three position cylinder actuator such as Fig. 1 of the utility model, 2, shown in 3, position shown in Figure 1 is low-grade zone position, declutch shift shaft 1 left end is bolted the shift fork (not shown), right-hand member passes through nut 15 with piston 4, spacer 19, piston 9 is fixed as one at axial direction, piston 4, piston 9 is by O RunddichtringO 20, O RunddichtringO 18 cooperates to realize sealing with declutch shift shaft 1, piston 4 outer rings cooperate to realize sealing by y-type seal ring 5 and cylinder 2 inwalls, piston 9 outer rings cooperate to realize sealing by y-type seal ring 17 and piston 8 inner rings, piston 8 outer rings cooperate to realize sealing by y-type seal ring 7 and cylinder 2 inwalls, declutch shift shaft 1 is by the sealing of O RunddichtringO 3 with air chamber on the left of realizing, nut 15 right-hand members are connected with displacement transducer guide rod 14 by screw thread, displacement transducer guide rod 14 right-hand member covers have sensor magnet ring 13, and magnet ring top cover 12 is threaded connection fixes the sensor magnet ring.
Can also be out of supply to prevent odd-side at axle journal place, cylinder 2 left side installation self-locking device according to the needs that reality is used.As shown in Figure 3, self-locking device is comprised of spring top cover 26, self-locking spring 27 and self-locking steel ball 28, and spring top cover 26 is threaded connection on the cylinder 2.
See also shown in Figure 2, solenoid valve group 23 is fixed on the cylinder 2 by 4 M6 bolts 22, and realize static seal by O RunddichtringO 21,24, processing inclined satisfies the air inlet requirement of left side air chamber on the cylinder 2,10 air inlets place of odd-side cylinder head such as A to view shape (U-shaped groove, also can be the groove of other shapes) to satisfy right side air chamber air inlet requirement, solenoid valve group 23 is integrated two identical two-bit triplet solenoid valves 1, solenoid valve 2, solenoid valve 1, solenoid valve 2 can be controlled separately, off-position lower cylinder both sides air chamber is logical atmosphere all, and principle as shown in Figure 4.
Job analysis:
As shown in Figure 1, the odd-side cylinder is positioned at low-grade zone position, and solenoid valve 1,2 all is in off-position.
If there is not the power taking requirement, the odd-side cylinder only need to get final product in two positions switchings of high and low shift, do not need the neutral position, when the high-grade zone position of needs, solenoid valve 2 powers on, the right side gas circuit is opened, cylinder right side air chamber is set up air pressure, pushing piston 8 moves to left, and meanwhile declutch shift shaft 1, piston 4, piston 9 grades also are moved to the left as an integral body, stop to move to left when piston 8 moves to cylinder 2 interior step end face, position shown in Fig. 5 (b), this moment declutch shift shaft 1, piston 4, piston 9 grades continue to move to left until position shown in Fig. 5 (a), i.e. the high-grade zone position of odd-side, and this moment, solenoid valve 2 can cut off the power supply.Otherwise, when the low-grade zone position of needs, solenoid valve 1 powers on, the left side gas circuit is opened, cylinder left side air chamber is set up air pressure, promotes declutch shift shaft 1, piston 4, piston 9 etc. and moves right as an integral body, can continue to drive that piston 8 continues to move to right together until position shown in Fig. 5 (c) when moving to position shown in Fig. 5 (b), be the low-grade zone position of odd-side, this moment, solenoid valve 1 can cut off the power supply.
When if the power taking requirement is arranged, at first the speed changer main tank is put neutral position, no matter odd-side is in high-grade zone position or low-grade zone position, only need to activate simultaneously solenoid valve 1, solenoid valve 2, this moment, cylinder both sides air chamber was set up air pressure simultaneously, if odd-side is positioned at high-grade zone position, shown in Fig. 5 (a), because piston 4 areas are greater than piston 9 areas, will overcome with joint efforts to the right surface friction drag and load resistance that pressure difference produces promote declutch shift shaft 1, piston 4, piston 9 grades move right as an integral body, when moving to shown in Fig. 5 (b) position, the area of right side air chamber is piston 9 areas and piston 8 area sums, this area is greater than left side air chamber piston 4 areas, so declutch shift shaft 1, piston 4, piston 9 grades will stop at position shown in Fig. 5 (b), this position is the odd-side neutral position, odd-side neutral position namely, can give simultaneously solenoid valve 1 this moment, solenoid valve 2 outages, can connect subsequently the engage a gear pore of power take-off, finish the engage a gear action of power take-off, then select as required suitable Transmission gear, power take-off can enter the force taking of parking working state.If odd-side is positioned at low-grade zone position, position shown in Fig. 5 (c), force analysis as can be known, cylinder right side air chamber pressure is greater than left side pressure, so piston 8 and declutch shift shaft as a whole 1, piston 4, piston 9 grades will be moved to the left position shown in Fig. 5 (b), this moment, piston 8 stopped mobile, analyze declutch shift shaft 1 as a whole, piston 4, piston 9 as can be known, left side pressure is greater than right atrial pressure, so declutch shift shaft 1, piston 4, piston 9 grades also will stop at position shown in Fig. 5 (b), this position is the odd-side neutral position, and namely the odd-side neutral position can be given solenoid valve 1 at this moment simultaneously, solenoid valve 2 outages, can connect subsequently the engage a gear pore of power take-off, finish the engage a gear action of power take-off, then select as required suitable Transmission gear, power take-off can enter the force taking of parking working state.
Claims (7)
1. novel odd-side three position cylinder actuators is characterized in that, comprise declutch shift shaft (1), cylinder (2), first piston (4), the second piston (9) and the 3rd piston (8); First piston (4) and the second piston (9) are fixed on the declutch shift shaft (1); First piston (4), the second piston (9) and the 3rd piston (8) are positioned at the air chamber of cylinder (2), and the inner ring of the outer ring of the second piston (9) and the 3rd piston (8) is sealed and matched; The diameter of first piston (4) is greater than the diameter of the second piston (9), and less than the diameter of the 3rd piston (8); The air chamber of cylinder (2) is stepped ramp type, and the end inner wall sealing that diameter is less in the outer ring of first piston (4) and the stepped ramp type air chamber cooperates, and the end inner wall sealing that diameter is larger in the outer ring of the 3rd piston (8) and the stepped ramp type air chamber cooperates.
2. a kind of novel odd-side according to claim 1 three position cylinder actuators, it is characterized in that, form left air chamber between first piston (4) and cylinder (2) left side, form right air chamber between the second piston (9) and the 3rd piston (8) and cylinder (2) right side; Form middle gas chamber between first piston (4) and the second piston (9), this middle gas chamber is communicated with atmosphere; Left air chamber is connected with the left side gas circuit, and this left side gas circuit is connected with the first solenoid valve of controller inflation; Right air chamber is connected with the right side gas circuit, and this right side gas circuit is connected with the second solenoid valve of controller inflation.
3. a kind of novel odd-side according to claim 1 three position cylinder actuators is characterized in that, are provided with the spacer (19) that is fixed on the declutch shift shaft (1) between first piston (4) and the second piston (9); Declutch shift shaft (1) is sealed and matched with cylinder (2); First piston (4) and the second piston (9) are sealed and matched with declutch shift shaft (1); First piston (4), spacer (19) and the second piston (9) are fixed in declutch shift shaft (1) one end by nut (15), nut (15) is connected with displacement transducer guide rod (14) by screw thread, displacement transducer guide rod (14) has sensor magnet ring (13) away from an end cover of nut (15), and sensor magnet ring (13) is fixed on the displacement transducer guide rod (14) by magnet ring top cover (12); Odd-side cylinder head (10) fixedly is stamped in the sealing of cylinder (2) right-hand member, has the gap between sensor magnet ring (13) and the odd-side cylinder head (10), and sensor magnet ring (13) is connected and fixed on the displacement transducer (11) on the odd-side cylinder head (10); Magnet ring top cover (12) and displacement transducer guide rod (14) all have endoporus, also have the uniform hole of some connection endoporus on displacement transducer guide rod (14) wall.
4. a kind of novel odd-side according to claim 1 three position cylinder actuators is characterized in that breather plug (6) is installed on the cylinder (2), and breather plug (6) is communicated with middle gas chamber.
5. a kind of novel odd-side according to claim 1 three position cylinder actuators, it is characterized in that, axle journal place, cylinder (2) left side is equipped with self-locking device, this self-locking device is comprised of spring top cover (26), self-locking spring (27) and self-locking steel ball (28), and spring top cover (26) is threaded connection on the cylinder (2); Self-locking steel ball (28) matches with the upper corresponding groove of declutch shift shaft (1).
6. a kind of novel odd-side according to claim 1 three position cylinder actuators is characterized in that described the 3rd piston (8) comprises the first continuous cylinder and the second cylinder, and the first cylinder is identical with the internal diameter of the second cylinder; The first cylinder of the outer ring of the second piston (9) and the 3rd piston (8) and the second cylinder inner ring are sealed and matched; The external diameter of the first cylinder is less than the external diameter of the second cylinder, and less than the internal diameter of the less end of diameter in the stepped ramp type air chamber; The end inner wall sealing that diameter is larger in the outer ring of the second cylinder of the 3rd piston (8) and the stepped ramp type air chamber cooperates.
7. a kind of novel odd-side according to claim 2 three position cylinder actuators is characterized in that the first solenoid valve and the second solenoid valve are the two-bit triplet solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203051181U CN202708037U (en) | 2012-06-27 | 2012-06-27 | Novel auxiliary box three-position air cylinder execution mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203051181U CN202708037U (en) | 2012-06-27 | 2012-06-27 | Novel auxiliary box three-position air cylinder execution mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202708037U true CN202708037U (en) | 2013-01-30 |
Family
ID=47588343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203051181U Expired - Lifetime CN202708037U (en) | 2012-06-27 | 2012-06-27 | Novel auxiliary box three-position air cylinder execution mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708037U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748464A (en) * | 2012-06-27 | 2012-10-24 | 陕西法士特齿轮有限责任公司 | Novel three-position cylinder executing mechanism of auxiliary box |
| CN107477177A (en) * | 2017-08-28 | 2017-12-15 | 陕西法士特齿轮有限责任公司 | A kind of three position AMT cylinders and its control method |
| CN113696711A (en) * | 2021-09-28 | 2021-11-26 | 江吉彬 | Combined power split type hybrid power transmission system and working method thereof |
| WO2022008467A1 (en) * | 2020-07-08 | 2022-01-13 | Zf Cv Systems Europe Bv | Operating device for an automatic gearbox |
-
2012
- 2012-06-27 CN CN2012203051181U patent/CN202708037U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748464A (en) * | 2012-06-27 | 2012-10-24 | 陕西法士特齿轮有限责任公司 | Novel three-position cylinder executing mechanism of auxiliary box |
| CN102748464B (en) * | 2012-06-27 | 2015-04-08 | 陕西法士特齿轮有限责任公司 | Novel three-position cylinder executing mechanism of auxiliary box |
| CN107477177A (en) * | 2017-08-28 | 2017-12-15 | 陕西法士特齿轮有限责任公司 | A kind of three position AMT cylinders and its control method |
| WO2022008467A1 (en) * | 2020-07-08 | 2022-01-13 | Zf Cv Systems Europe Bv | Operating device for an automatic gearbox |
| US12092208B2 (en) | 2020-07-08 | 2024-09-17 | Zf Cv Systems Europe Bv | Actuating device for an automated manual transmission |
| CN113696711A (en) * | 2021-09-28 | 2021-11-26 | 江吉彬 | Combined power split type hybrid power transmission system and working method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102748464B (en) | Novel three-position cylinder executing mechanism of auxiliary box | |
| CN2842101Y (en) | The automotive transmission Pneumatic shifting device | |
| CN202708037U (en) | Novel auxiliary box three-position air cylinder execution mechanism | |
| CN202946658U (en) | Automatic speed changer hydraulic shifting actuator | |
| CN109798270B (en) | Multi-mode energy-saving servo actuator and method for realizing multi-mode energy saving | |
| CN103836174A (en) | Automatic transmission and gear selection and shift actuating mechanism thereof | |
| CN205047814U (en) | Electronically controlled pneumatic mechanical type automatic gearbox selects gear shift actuating mechanism | |
| CN203717873U (en) | Automatic transmission and gear selection and shifting execution mechanism thereof | |
| CN101435503B (en) | Electromagnetic valve controlled pneumatic shift automatic speed variator | |
| CN201096115Y (en) | Hydraulic combined valve | |
| CN202971867U (en) | Pneumatic gearshift operating system of transmission | |
| CN201825698U (en) | Improved forklift EHC (electrohydraulic control) variable speed control valve | |
| CN103697156B (en) | Pneumatic shifting multipoint soft positioning mechanism | |
| CN201339708Y (en) | Electromagnetic valve controlled pneumatic shifting automatic speed variator | |
| CN203322241U (en) | AMT gear shifting executing mechanism | |
| CN102162523A (en) | Air channel operating mechanism of auxiliary box of automobile speed changer | |
| CN105179681A (en) | Hydraulic control gearshift system of two-gear automatic transmission | |
| CN201382146Y (en) | Three-position gear shifting cylinder | |
| CN205207642U (en) | Two fast automatic transmission liquid accuse gear shift systems | |
| CN106032840A (en) | Hydraulic control gear shifting system of two-speed automatic gearbox | |
| CN207539329U (en) | A kind of three position AMT cylinders | |
| CN100516600C (en) | Solenoid valve controlled pneumatic gear shifting device | |
| CN208634355U (en) | The more gear speed change devices of agricultural tillage machine fluid drive | |
| CN203686108U (en) | Pneumatic gear-shifting multi-point soft positioning mechanism | |
| CN201713285U (en) | Device for forklift control valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |