CN215370929U - High-low gear switching device for auxiliary box of transmission - Google Patents
High-low gear switching device for auxiliary box of transmission Download PDFInfo
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- CN215370929U CN215370929U CN202121635086.7U CN202121635086U CN215370929U CN 215370929 U CN215370929 U CN 215370929U CN 202121635086 U CN202121635086 U CN 202121635086U CN 215370929 U CN215370929 U CN 215370929U
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Abstract
The utility model discloses a high-low gear switching device of a transmission auxiliary box, which comprises a valve body, a fixed valve core, a push rod, a movable valve core, a second spring and a valve cover, wherein the valve body is provided with two parallel through holes along the axis direction, an air inlet is arranged between the two through holes, and two air outlets are arranged at two sides of the through holes; the fixed valve core is arranged in the through hole of the valve body, and the fixed valve core is provided with a through hole for connecting the air inlet and the air outlet; the push rod is arranged in the fixed valve core, a first spring is sleeved outside the push rod and is contacted with the fixed valve core, a movable valve core is arranged on the inner side of the upper part of the fixed valve core, the movable valve core is axially contacted with the push rod, and a second spring is arranged on the inner side of the movable valve core; the valve cover is arranged at one end of the valve body through a bolt and an elastic pad, and the spring II is in contact with the valve cover; the valve cover is provided with an exhaust port. The utility model solves the defect that the range gear is easy to fall, removes the force applied to the push rod by air pressure through the air inlet structure, greatly reduces the switching force of the push rod and solves the problem of large gear selecting and switching force.
Description
Technical Field
The utility model relates to a high-low gear switching device of a transmission auxiliary box, belonging to the technical field of control mechanisms of transmission gear transmission devices.
Background
At present, the whole vehicle air pressure of a heavy-duty automobile is 0.8-1MPa, when gears are switched in a transmission range, the push rod force of the existing auxiliary box high-low gear switching device is the sum of the air pressure and the spring force, the integral switching force is large, the large gear selecting force is increased, and the gear selecting hand feeling is seriously influenced.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a lighter high-low gear switching device for a transmission auxiliary box aiming at the defects in the prior art.
In order to solve the technical problem, the utility model provides a high-low gear switching device of a transmission auxiliary box, which comprises a valve body, a fixed valve core, a push rod, a movable valve core, a spring II and a valve cover, wherein the valve body is provided with two parallel through holes along the axis direction, an air inlet is arranged between the two through holes, and two air outlets are arranged at two sides of the through holes; the fixed valve core is arranged in the through hole of the valve body, and the fixed valve core is provided with a through hole for connecting the air inlet and the air outlet; the push rod is arranged in the fixed valve core, a first spring is sleeved outside the push rod and is contacted with the fixed valve core, a movable valve core is arranged on the inner side of the upper part of the fixed valve core, the movable valve core is axially contacted with the push rod, and a second spring is arranged on the inner side of the movable valve core; the valve cover is arranged at one end of the valve body through a bolt and an elastic pad, and the spring II is in contact with the valve cover; the valve cover is provided with an exhaust port.
An O-shaped ring I is arranged between the valve body and the fixed valve core.
And a sealing ring is arranged between the fixed valve core and the push rod.
An O-shaped ring II is arranged between the fixed valve core and the movable valve core in the radial direction, and a rubber layer is arranged on the end face of the fixed valve core and is sealed with the movable valve core in the axial direction.
And an O-shaped ring III is arranged between the valve body and the valve cover.
Has the advantages that: the utility model solves the defect that the range gear is easy to fall, removes the force applied to the push rod by air pressure through the air inlet structure, greatly reduces the switching force of the push rod and solves the problem of large gear selecting and switching force.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: the valve comprises a valve cover 1, a 2O-shaped ring III, a 3 spring II, a 4 movable valve core, a 5 fixed valve core, a 6O-shaped ring II, a 7O-shaped ring I, a 8 valve body, a 9 sealing ring, a 10 spring I, a 11 push rod, a 12 exhaust port, a 13 air inlet, a 14 air outlet, a 15 bolt and a 16 elastic cushion; the air port of the cylinder of the auxiliary box of the A speed changer and the air port of the cylinder of the auxiliary box of the B speed changer.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the utility model provides a high-low gear switching device of a transmission auxiliary box, which comprises a valve body 8, a fixed valve core 5, a push rod 11, a movable valve core 4, a second spring 3 and a valve cover 1, wherein the valve body 8 is provided with two parallel through holes along the axis direction, an air inlet 13 is arranged between the two through holes, and two air outlets 14 are arranged at two sides of the through holes; the fixed valve core 5 is arranged in a through hole of the valve body 8, and the fixed valve core 5 is provided with a through hole for connecting the air inlet 13 and the air outlet 14; the push rod 11 is arranged in the fixed valve core 5, a first spring 10 is sleeved on the outer side of the push rod and is contacted with the fixed valve core 5, the movable valve core 4 is arranged on the inner side of the upper part of the fixed valve core 5, the movable valve core 4 is axially contacted with the push rod 11, and a second spring 3 is arranged on the inner side of the movable valve core; the valve cover 1 is arranged at one end of the valve body 8 through a bolt 15 and an elastic cushion 16, and the spring II 3 is in contact with the valve cover 1; the valve cover 1 is provided with an exhaust port 12.
An O-shaped ring I7 is arranged between the valve body 8 and the fixed valve core 5.
And a sealing ring 9 is arranged between the fixed valve core 5 and the push rod 11 and keeps sealed with the push rod 11.
An O-shaped ring II 6 is arranged between the fixed valve core 5 and the movable valve core 4 in the radial direction, and a rubber layer is arranged on the end face of the fixed valve core 5 and has a sealing effect with the movable valve core 4 in the axial direction.
And an O-shaped ring III 2 is arranged between the valve body 8 and the valve cover 1.
The present invention drives only one push rod 11 at a time.
When the left push rod 11 moves upwards, the left push rod 11 is contacted with a rubber layer at the lower end of the movable valve core 4, so that an air inlet 13 and an air outlet 12 are isolated; the right push rod 11 is in a free state under the action of the first spring 10, and under the action of the second spring 3, a rubber layer at the lower end of the movable valve core 4 is in contact with the fixed valve core 5 and then is sealed, so that the air inlet 13 is isolated from the right air outlet 14, and meanwhile, under the sealing action of an O-shaped ring II 6 on the outer side of the movable valve core 4, the air inlet 13 is isolated from the air outlet 12. At the moment, the whole vehicle air source enters a left air outlet 14 through an air inlet 13 and a fixed valve core 5, so that the whole vehicle air source enters an air port A of an auxiliary box air cylinder of the transmission, and the air in the air port B of the auxiliary box air cylinder is exhausted through an air outlet 12;
when the right push rod 11 moves upwards, the right push rod 11 is contacted with a rubber layer at the lower end of the movable valve core 4, so that an air inlet 13 and an air outlet 12 are isolated; the left push rod 11 is in a free state under the action of the first spring 10, and under the action of the second spring 3, a rubber layer at the lower end of the movable valve core 4 is in contact with the fixed valve core 5 and then is sealed, so that the air inlet 13 is isolated from the left air outlet 14, and meanwhile, under the sealing action of an O-shaped ring II 6 on the outer side of the movable valve core 4, the air inlet 13 is isolated from the air outlet 12. At the moment, the whole vehicle air source enters a right air outlet 14 through an air inlet 13 and a fixed valve core 5, so that the whole vehicle air source enters an air port B of an auxiliary box air cylinder of the transmission, and the air in the air port A of the auxiliary box air cylinder is exhausted through an air outlet 12;
when the push rod 11 moves upwards, the whole vehicle air source enters the air outlet 14 through the air inlet 13 and the fixed valve core 5, and the stress state of the push rod 11 is that the air pressure is subtracted from the first spring 10 and the second spring 3 and is far smaller than the sum of the first spring 10 and the second spring 3 and the air pressure.
The air inlet of the utility model is connected with the air source of the whole vehicle, and the air outlet is connected with the cylinder of the auxiliary box of the transmission. The high-low gear of the auxiliary box of the transmission is switched by switching the rising and the falling of the push rod. The utility model improves the air inlet structure, removes the force applied to the push rod by air pressure, greatly reduces the switching force of the push rod and solves the problem of large gear selecting and switching force.
The above-described embodiments of the utility model are intended to be illustrative only and are not intended to be limiting, as all changes that come within the scope of or equivalence to the utility model are intended to be embraced therein.
Claims (5)
1. The utility model provides a high low gear auto-change over device of derailleur auxiliary box which characterized in that: the valve comprises a valve body (8), a fixed valve core (5), a push rod (11), a movable valve core (4), a second spring (3) and a valve cover (1), wherein the valve body (8) is provided with two parallel through holes along the axis direction, an air inlet (13) is arranged between the two through holes, and two air outlets (14) are arranged on two sides of the through holes; the fixed valve core (5) is arranged in a through hole of the valve body (8), and the fixed valve core (5) is provided with a through hole for connecting the air inlet (13) and the air outlet (14); the push rod (11) is arranged in the fixed valve core (5), a first spring (10) is sleeved on the outer side of the push rod and is in contact with the fixed valve core (5), a movable valve core (4) is arranged on the inner side of the upper part of the fixed valve core (5), the movable valve core (4) is in axial contact with the push rod (11), and a second spring (3) is arranged on the inner side of the movable valve core; the valve cover (1) is installed at one end of the valve body (8) through a bolt (15) and an elastic pad (16), and the second spring (3) is in contact with the valve cover (1); the valve cover (1) is provided with an exhaust port (12).
2. The transmission range high-low gear shifting apparatus of claim 1, wherein: an O-shaped ring I (7) is arranged between the valve body (8) and the fixed valve core (5).
3. The transmission range high-low gear shifting apparatus of claim 1, wherein: and a sealing ring (9) is arranged between the fixed valve core (5) and the push rod (11).
4. The transmission range high-low gear shifting apparatus of claim 1, wherein: an O-shaped ring II (6) is arranged between the fixed valve core (5) and the movable valve core (4) in the radial direction, and a rubber layer is arranged on the end face of the fixed valve core (5) and is sealed with the movable valve core (4) in the axial direction.
5. The transmission range high-low gear shift device according to any one of claims 1 to 4, characterized in that: and an O-shaped ring III (2) is arranged between the valve body (8) and the valve cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121635086.7U CN215370929U (en) | 2021-07-19 | 2021-07-19 | High-low gear switching device for auxiliary box of transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121635086.7U CN215370929U (en) | 2021-07-19 | 2021-07-19 | High-low gear switching device for auxiliary box of transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215370929U true CN215370929U (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121635086.7U Active CN215370929U (en) | 2021-07-19 | 2021-07-19 | High-low gear switching device for auxiliary box of transmission |
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| Country | Link |
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| CN (1) | CN215370929U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU219820U1 (en) * | 2023-06-13 | 2023-08-09 | Общество с ограниченной ответственностью "ГИДРО-СТАР" | PNEUMATIC VALVE FOR GEARBOX DEVICE CONTROL |
-
2021
- 2021-07-19 CN CN202121635086.7U patent/CN215370929U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU219820U1 (en) * | 2023-06-13 | 2023-08-09 | Общество с ограниченной ответственностью "ГИДРО-СТАР" | PNEUMATIC VALVE FOR GEARBOX DEVICE CONTROL |
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