CN220037427U - Leg shifting device of gear shifting mechanism - Google Patents
Leg shifting device of gear shifting mechanism Download PDFInfo
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- CN220037427U CN220037427U CN202121526617.9U CN202121526617U CN220037427U CN 220037427 U CN220037427 U CN 220037427U CN 202121526617 U CN202121526617 U CN 202121526617U CN 220037427 U CN220037427 U CN 220037427U
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- gear shifting
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Abstract
The utility model discloses a leg shifting device of a gear shifting mechanism, which comprises a main body bracket, a sliding rail, an input structure capable of reciprocating along a straight line, and an output structure, wherein the output structure comprises a first leg shifting part and a second leg shifting part which can be relatively close to or far away from each other; the main body support is fixed with a sliding rail, and the first shifting leg and the second shifting leg are in sliding fit with the sliding rail; the input structure and the output structure are linked through a gear shifting meshing structure. The leg shifting device of the gear shifting mechanism can control the power conversion mechanism by manually and smoothly switching the gear of the gear shifting mechanism, so that the energy consumption of the whole system operation is reduced.
Description
Technical Field
The utility model relates to the field of gear shifting mechanisms, in particular to a leg shifting device of a gear shifting mechanism.
Background
The gear shifting mechanism is one kind of equipment for various kinds of vehicle, engineering machine and mining equipment.
Existing mechanical automatic transmissions include two broad categories: the first is a step-variable automatic transmission, and the purpose of automatic speed change is realized through automatic control of an automatic control system, such as AMT, AT, DCT; the second is a continuously variable automatic transmission, such as a CVT. Both automatic transmissions require complex automatic control systems and mechanical transmission systems, and the stepped automatic transmission has a longer history and is most widely used, but compared with the CVT, the stepped automatic transmission has a slightly insufficient running smoothness and energy consumption.
The gear shifting mechanism of the stepless automatic transmission is used as an accessory mechanism of the stepless automatic transmission and is matched with mechanical equipment such as various vehicles, engineering machinery, mining equipment and the like, the technology of the stepless automatic transmission mainly comes from Japan, and the gear shifting mechanism is nearly perfect, but the following problems still exist:
(1) A complex automatic control system is needed to control a plurality of pairs of clutch plates so as to realize the control of the planetary gear set;
(2) The whole gear shifting mechanism is large in size and high in energy loss: the larger size of the planetary gear set is the root cause of the larger size of the whole gear shifting mechanism, and more energy is lost when the planetary gear set with larger size is driven to start and stop;
(3) Under the condition that the input torque is the same, the output torque of the forward gear is the same as that of the reverse gear, and the phenomenon of weak reverse gear of the CVT is caused.
Therefore, the inventor designs a power conversion mechanism of a novel gear shifting mechanism. Because this power conversion mechanism mainly includes input axle sleeve dish, transition gear disc and output axle sleeve dish, in order to realize the gear shift, need let input axle sleeve dish and output axle sleeve dish be close to or keep away from transition gear disc simultaneously to realize that input axle sleeve dish, transition gear disc link mutually with output axle sleeve dish, input axle sleeve dish links mutually with output axle sleeve dish, or the switching of three kinds of states such as disconnection each other between the three. However, since there is no gear shifting operation mechanism matched with the power conversion mechanism, it is necessary to design a leg pulling device specially used for matching with a novel gear shifting mechanism.
Disclosure of Invention
The utility model aims to provide a leg shifting device of a gear shifting mechanism, which is used for controlling a power conversion mechanism by manually and smoothly switching gears of the gear shifting mechanism, so that the energy consumption of the whole system operation is reduced.
In order to achieve the above purpose, the present utility model provides a leg shifting device of a gear shifting mechanism, which comprises a main body bracket, a sliding rail, an input structure capable of reciprocating along a straight line, and an output structure, wherein the output structure comprises a first leg shifting and a second leg shifting which can be relatively close to or far away from each other; the main body support is fixed with a sliding rail, and the first shifting leg and the second shifting leg are in sliding fit with the sliding rail; the input structure and the output structure are linked through a gear shifting meshing structure.
As a further improvement of the utility model, the utility model further comprises a pre-pressing spring which is in sliding fit with the sliding rail, and two ends of the pre-pressing spring are respectively contacted with the first poking leg and the second poking leg.
As a still further improvement of the present utility model, the input structure includes a shift pin and a cable connected to the shift pin.
As a further improvement of the utility model, the utility model further comprises a limiting bracket for limiting the meshing distance between the first shifting leg and the second shifting leg, wherein the limiting bracket is fixedly connected with the main body bracket through a bolt, and the first shifting leg and the second shifting leg limit the displacement of the output structure through a gear shifting meshing structure.
As a further improvement of the utility model, the first shifting leg comprises a first limiting part, the second shifting leg comprises a second limiting part, and the gear shifting slide pin is clamped between the first limiting part of the first shifting leg and the second limiting part of the second shifting leg; the first limiting part and the second limiting part are positioned between the main body support and the limiting support.
As a further improvement of the utility model, the gear shifting engagement structure comprises a first stepped sliding tooth structure arranged on the two side surfaces of the gear shifting sliding pin, and further comprises a second stepped sliding tooth structure arranged on the first shifting leg and the second shifting leg, wherein the first stepped sliding tooth structure is adaptive to the second stepped sliding tooth structure.
As a further improvement of the utility model, the first stepped sliding tooth structure and the second stepped sliding tooth structure at least can be provided with sliding tooth structures which can realize the functions of neutral gear, forward gear and reverse gear.
Advantageous effects
Compared with the prior art, the leg shifting device of the gear shifting mechanism has the advantages that:
1. the both ends of the pre-pressing spring are respectively contacted with the first shifting leg and the second shifting leg, so that the first shifting leg and the second shifting leg can keep synchronous sliding on the sliding rail, and the first shifting leg and the second shifting leg can be meshed with the gear shifting sliding pin more stably.
2. The gear shifting slide pin and the inhaul cable are fixed on the same central line, and the inhaul cable drives the gear shifting slide pin to do linear reciprocating motion, so that the gear shifting slide pin moves stably, and further the function of freely cutting a gear shifting position is realized.
3. The spacing support and the main body support limit the meshing distance between the first shifting leg and the second shifting leg and the gear shifting sliding pin respectively through fixed connection, the meshing synchronization and stability of the first shifting leg and the second shifting leg and the gear shifting sliding pin are guaranteed, the first shifting leg and the second shifting leg limit the movement deviation of the vertical central line of the gear shifting sliding pin through the meshing force provided by the pre-pressing spring and the cooperation of the spacing support, and the gear shifting sliding pin can normally do linear reciprocating motion along the central line.
4. The first limiting part and the second limiting part can prevent the shift sliding pin from shifting.
5. The gear shifting sliding pin has the advantages that the stepped sliding tooth structure arranged on the surface of the gear shifting sliding pin is matched with the sliding tooth edges of the two shifting legs, when the gear shifting sliding pin does linear reciprocating motion, the stepped equidistant design of the sliding tooth structure can mobilize the first shifting leg and the second shifting leg to push and pull the sleeve disc simultaneously, and the flexible thrust of the pre-pressing spring between the first shifting leg and the second shifting leg is matched for smooth gear shifting.
6. The first shifting leg and the second shifting leg are used for adjusting the ratio of input torque to output torque between the sleeve discs by shifting the input sleeve discs and the output sleeve discs, so that the aim of gear shifting and speed changing is fulfilled, and at least three-order sliding tooth structures respectively correspond to neutral gear, forward gear and reverse gear functions and can meet the use requirements of different gear shifting mechanisms by increasing or reducing the number of sliding tooth structure stages.
The utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the utility model.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a leg shifter of a shift mechanism;
FIG. 2 is a top cross-sectional view of a leg shifter of the shift mechanism;
FIG. 3 is a top view of a leg shifter of the shift mechanism;
FIG. 4 is a right side view of the leg shifting arrangement of the shift mechanism;
FIG. 5 is a front view of a first shift leg of the shift leg arrangement of the shift mechanism;
FIG. 6 is a top view of a first shift leg of the shift leg arrangement of the shift mechanism;
FIG. 7 is a left side view of a first shift leg of the shift leg arrangement of the shift mechanism;
FIG. 8 is a front view of a second shift leg of the shift leg device of the shift mechanism;
FIG. 9 is a top view of a second shift leg of the shift leg device of the shift mechanism;
FIG. 10 is a left side view of a second shift leg of the shift leg device of the shift mechanism;
FIG. 11 is a front view of the leg rest main body bracket and U-shaped frame of the shift mechanism;
FIG. 12 is a top view of the leg rest body bracket and U-shaped frame of the shift mechanism;
FIG. 13 is a left side view of the leg rest body bracket and U-shaped frame of the shift mechanism;
FIG. 14 is a top cross-sectional view of the reverse gear of the leg rest of the shift mechanism;
FIG. 15 is a top cross-sectional view of a shifting leg arrangement forward gear of the shifting mechanism;
fig. 16 is a top cross-sectional view of a neutral position of the leg rest of the shift mechanism.
Detailed Description
Embodiments of the present utility model will now be described with reference to the accompanying drawings.
Examples
The specific embodiment of the utility model is shown in fig. 1 to 13, and the shifting leg device of the gear shifting mechanism comprises a main body bracket 1, a sliding rail 2, an input structure capable of moving back and forth along a straight line, and an output structure, wherein the output structure comprises a first shifting leg 5 and a second shifting leg 4 which can be relatively close to or far away from each other; the main body bracket 1 is fixedly provided with a sliding rail 2, and the first shifting leg 5 and the second shifting leg 4 are in sliding fit with the sliding rail 2; the input structure is coupled to the output structure by a shift engagement structure 12. In this embodiment, the main body support 1 is a U-shaped structure, a U-shaped frame 14 with openings in the same direction and cross-shaped and staggered with the main body support 1 is fixed at the middle part of the main body support 1, and the U-shaped frame 14 has positioning functions of an input structure and an output structure. The sliding rail 2 is transversely arranged on one side of the main body bracket 1 close to the fixed end of the main body bracket, and the input structure and the output structure are arranged in the U-shaped frame 14.
Still include pre-compaction spring 3, pre-compaction spring 3 and slide rail 2 sliding fit, both ends respectively with first dialling leg 5 and second dialling leg 4 contact. In this embodiment, the pre-compaction spring 3 adopts the cylinder type, and slide rail 2 cross section is the rectangle, can increase the frictional force between pre-compaction spring 3 and the slide rail 2 to some extent and avoid pre-compaction spring 3 to rotate at will, improves the stability of pre-compaction spring 3 force transmission, does not influence the pre-compaction spring 3 again and dials the thrust of leg 5 and second to dial leg 4, and the slide rail hole that leg 4 was dialled to first and second adopts square slide hole 13 and slide rail 2 adaptation simultaneously, has equally and dials the effect that leg 4 motion deviation was dialled to first and second, improves stability.
The input structure comprises a gear shifting slide pin 9 and a guy rope 8, and the guy rope 8 is connected with the gear shifting slide pin 9. In this embodiment, a fixed ring pin 11 is fixed between the gear shift slide pin 9 and the cable 8, which has the function of preventing the gear shift slide pin 9 and the cable 8 from sliding along the center line, and improves the stability of linear reciprocation.
The gear shifting device further comprises a limiting support 6 for limiting the meshing distance between the first shifting leg 5 and the second shifting leg 4, the limiting support 6 is fixedly connected with the main body support 1 through a bolt 7, and the first shifting leg 5 and the second shifting leg 4 limit the displacement of the output structure through a gear shifting meshing structure 12. In this embodiment, the engagement distance refers to the distance between the first stepped sliding tooth structures 121 of the first poking leg 5 and the second poking leg 4 when the first stepped sliding tooth structures 121 and the second stepped sliding tooth structures 122 are engaged. The limiting support 6 is a U-shaped plate, an opening of the limiting support is opposite to a U-shaped frame 14 fixed on the main body support 1, the limiting support and the main body support are mutually fixed through bolts 7 at two ends, the limiting support can be matched with the U-shaped frame 14 to limit meshing movement of the first shifting leg 5 and the second shifting leg 4 and linear reciprocating movement of the gear shifting sliding pin 9, and stability of movement is improved.
The gear engagement structure 12 comprises a first stepped sliding tooth structure 121 arranged on the two side surfaces of the gear sliding pin 9, and further comprises a second stepped sliding tooth structure 122 arranged on the first shifting leg 5 and the second shifting leg 4, wherein the first stepped sliding tooth structure 121 is adaptive to the second stepped sliding tooth structure 122. In this embodiment, the second shifting leg 4 is disposed above the first shifting leg 5, the first stepped sliding tooth structures 121 corresponding to the two are opposite, each level of cross sections of the vertical center lines of the first stepped sliding tooth structure 121 and the second stepped sliding tooth structure 122 are rectangular, the structure is relatively material-saving, and the transition edges between the sliding teeth at each level are intersected to form an obtuse angle, and when the first stepped sliding tooth structure 121 and the second stepped sliding tooth structure 122 relatively move, the motion engagement between the sliding teeth has smooth transition and the effect of reducing impact force.
The first shifting leg 5 comprises a first limiting part, the second shifting leg 4 comprises a second limiting part, and the gear shifting slide pin 9 is clamped between the first limiting part of the first shifting leg 5 and the second limiting part of the second shifting leg 4. The first limiting part and the second limiting part are positioned between the main body bracket 1 and the limiting bracket 6. In this embodiment, the first limiting portion and the second limiting portion are both plate-shaped structures. The first limiting part is disposed below the second stepped sliding tooth structure 122 of the first shifting leg 5, as shown in fig. 5; the second limiting portion is disposed above the second stepped sliding tooth structure 122 of the second shifting leg 4, as shown in fig. 8.
The first stepped sliding tooth structure 121 and the second stepped sliding tooth structure 122 have at least a third-order sliding tooth structure capable of realizing a neutral gear, a forward gear and a reverse gear. In this embodiment, the first stepped sliding tooth structure 121 and the second stepped sliding tooth structure 122 have three-step sliding tooth structures that are matched with each other, and the requirements of different gear shifting mechanisms can be met by increasing or decreasing the number of sliding tooth structure stages of the first stepped sliding tooth structure 121 and the second stepped sliding tooth structure 122.
Principle of operation
As shown in fig. 14, when the device is about to realize a reverse gear operation, the guy cable 8 drives the gear shifting slide pin 9 to drive the first shifting leg 5 and the second shifting leg 4 to simultaneously shift the output shaft sleeve disk 15 and the input shaft sleeve disk 16, so that the inclined fluted disc of the input shaft sleeve disk 16 is meshed with the front inclined fluted disc 171 of the transition gear disk 17, and meanwhile, the inclined fluted disc of the output shaft sleeve disk 15 is meshed with the rear inclined fluted disc 172 of the transition gear disk 17, thereby completing the reverse gear operation; as shown in fig. 15, when the device is about to realize forward gear operation, the guy cable 8 drives the gear shifting slide pin 9 to enable the first poking leg 5 and the second poking leg 4 to poke the output shaft sleeve disc 15 and the input shaft sleeve disc 16, so that the output shaft sleeve disc 15 and the input shaft sleeve disc 16 are relatively axially fixed, and coaxial locking rotation is realized; as shown in fig. 16, when the device is about to realize neutral gear operation, the guy rope 8 drives the gear shifting slide pin 9 to enable the first shifting leg 5 and the second shifting leg 4 to shift the output shaft sleeve disc 15 and the input shaft sleeve disc 16, so that the first shifting leg and the second shifting leg are disengaged from the transition gear disc 17 to stop transmission, and the neutral gear operation is completed.
The utility model has been described in connection with the preferred embodiments, but the utility model is not limited to the embodiments disclosed above, but it is intended to cover various modifications, equivalent combinations according to the essence of the utility model.
Claims (7)
1. The shifting leg device of the gear shifting mechanism is characterized by comprising a main body bracket (1), a sliding rail (2), an input structure capable of moving back and forth along a straight line, and an output structure, wherein the output structure comprises a first shifting leg (5) and a second shifting leg (4) which can be relatively close to or far away from each other; the main body support (1) is fixedly provided with a sliding rail (2), and the first poking leg (5) and the second poking leg (4) are in sliding fit with the sliding rail (2); the input structure and the output structure are linked through a gear shifting engagement structure (12).
2. The shifting leg device of the gear shifting mechanism according to claim 1, further comprising a pre-pressing spring (3), wherein the pre-pressing spring (3) is in sliding fit with the sliding rail (2), and two ends of the pre-pressing spring are respectively contacted with the first shifting leg (5) and the second shifting leg (4).
3. A shifting leg arrangement of a gear shifting mechanism according to claim 1 or 2, characterized in that the input structure comprises a gear shifting slide pin (9) and a pull cable (8), the pull cable (8) being connected to the gear shifting slide pin (9).
4. A shifting leg device of a gear shifting mechanism according to claim 3, characterized by further comprising a limiting bracket (6) limiting the engagement distance of the first shifting leg (5) and the second shifting leg (4), wherein the limiting bracket (6) and the main body bracket (1) are fixedly connected through a bolt (7).
5. A shifting leg arrangement of a gear shifting mechanism according to claim 4, characterized in that the first shifting leg (5) comprises a first limiting portion and the second shifting leg (4) comprises a second limiting portion, the gear shifting slide pin (9) being sandwiched between the first limiting portion of the first shifting leg (5) and the second limiting portion of the second shifting leg (4); the first limiting part and the second limiting part are positioned between the main body bracket (1) and the limiting bracket (6).
6. A shifting leg device of a gear shifting mechanism according to claim 3, characterized in that the gear shifting engagement structure (12) comprises a first stepped sliding tooth structure (121) arranged on both side surfaces of the gear shifting sliding pin (9), and a second stepped sliding tooth structure (122) arranged on the first shifting leg (5) and the second shifting leg (4), wherein the first stepped sliding tooth structure (121) is adapted to the second stepped sliding tooth structure (122).
7. The leg shifting device of a gear shifting mechanism according to claim 6, wherein the first stepped sliding tooth structure (121) and the second stepped sliding tooth structure (122) are provided with at least three-step sliding tooth structures capable of realizing neutral, forward and reverse gear functions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121526617.9U CN220037427U (en) | 2021-07-06 | 2021-07-06 | Leg shifting device of gear shifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121526617.9U CN220037427U (en) | 2021-07-06 | 2021-07-06 | Leg shifting device of gear shifting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220037427U true CN220037427U (en) | 2023-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121526617.9U Active CN220037427U (en) | 2021-07-06 | 2021-07-06 | Leg shifting device of gear shifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220037427U (en) |
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2021
- 2021-07-06 CN CN202121526617.9U patent/CN220037427U/en active Active
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