CN215487595U - Gearbox gearshift - Google Patents
Gearbox gearshift Download PDFInfo
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- CN215487595U CN215487595U CN202121057941.0U CN202121057941U CN215487595U CN 215487595 U CN215487595 U CN 215487595U CN 202121057941 U CN202121057941 U CN 202121057941U CN 215487595 U CN215487595 U CN 215487595U
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Abstract
The utility model relates to a gearbox gear shifting mechanism which comprises a box body, wherein an input shaft is arranged in the box body, an input gear of the input shaft is in transmission connection with a speed reducing mechanism, the speed reducing mechanism is in transmission connection with a power output mechanism, a gear shifting gear set capable of changing gears is in transmission connection between the speed reducing mechanism and the power output mechanism, the gear shifting gear set is connected with a synchronizing mechanism used for shifting gears, and the synchronizing mechanism is connected with a rocker arm mechanism used for controlling the working state of the gears. The utility model can ensure that the gear shifting gear set of the gearbox is accurately engaged during gear shifting, and improves the safety and reliability of vehicle driving.
Description
Technical Field
The utility model relates to the technical field of gearboxes, in particular to a gearbox gear shifting mechanism.
Background
The existing gear shifting mechanism of the gearbox is usually connected with a gear shifting handle device through a pull wire, the gear shifting handle device controls a gear shifting mechanism in the gearbox to shift gears, namely the gear shifting mechanism controls the movement of a clutch ring to realize the meshing transmission of a high-speed gear set and a low-speed gear set.
When the gear shifting handle device is used for shifting gears, gears in high-speed and low-speed gear sets can not ensure accurate meshing transmission, so that the situation that the gears are not shifted smoothly or even are out of gear is often caused, the safety and the reliability of vehicle running are seriously threatened, and meanwhile, hidden dangers are brought to the safety of vehicle drivers.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gear shifting mechanism of a gearbox, aiming at ensuring that a high-speed gear set and a low-speed gear set of the gearbox can be accurately meshed during gear shifting and improving the running safety and reliability of a vehicle.
The above object of the present invention is achieved by the following technical solutions:
a gearbox gear shifting mechanism comprises a box body, wherein an input shaft is arranged in the box body, an input gear of the input shaft is in transmission connection with a speed reducing mechanism, the speed reducing mechanism is in transmission connection with a power output mechanism, a gear shifting gear set capable of changing gears is in transmission connection with the power output mechanism, the gear shifting gear set comprises a spline shaft, an output gear, a high-speed gear and a low-speed gear, the output gear, the high-speed gear and the low-speed gear are sequentially and coaxially arranged on the spline shaft, the output gear is clamped on the spline shaft and is in transmission connection with the power output mechanism, the high-speed gear and the low-speed gear are both sleeved on the spline shaft through bearings, the high-speed gear is provided with a coaxial high-speed tooth key extending towards the low-speed gear, the low-speed gear is provided with a coaxial low-speed tooth key extending towards the high-speed gear, and the spline shaft between the high-speed tooth key and the low-speed tooth key is clamped on the spline shaft to drive the tooth key, a clutch ring is clamped on the outer side of the driving tooth key in a sleeved mode and can slide on the high-speed tooth key, the low-speed tooth key and the driving tooth key along the axial direction of the spline shaft; the clutch ring is connected with a synchronizing mechanism used for adjusting the gear state of the clutch ring, and the synchronizing mechanism is connected with a rocker mechanism driving the synchronizing mechanism to work.
In the gearbox gear shifting mechanism, the clutch teeth matched with the high-speed toothed key, the low-speed toothed key and the driving toothed key are arranged on the inner side of the clutch ring, and the ring-shaped groove is formed in the outer edge of the clutch ring.
In the above gearbox shifting mechanism, the thickness of the clutch ring is smaller than that of the driving toothed key and is larger than that of the high-speed toothed key and that of the low-speed toothed key.
In the above gearbox shifting mechanism, the speed reducing mechanism includes a speed reducing shaft, a high-speed output gear, a low-speed output gear and a speed reducing gear, and the speed reducing shaft is coaxially and fixedly connected with the speed reducing gear, the high-speed output gear and the low-speed output gear in sequence; the high-speed output gear and the low-speed output gear are respectively meshed with the high-speed gear and the low-speed gear.
The gearbox gear shifting mechanism comprises a connecting shaft rod, a clamping jaw, a sliding sleeve, positioning rings, an inner spring and an outer spring, wherein one end of the connecting shaft rod penetrates out of a box body, the other end of the connecting shaft rod is embedded in the sleeve, the sleeve is fixedly connected to the inner side of the box body, the connecting shaft rod on the inner side of the box body is provided with the two positioning rings at intervals, the sliding sleeve is sleeved on the connecting shaft rod between the two positioning rings, the clamping jaw is fixedly connected to the sliding sleeve, the clamping jaw is clamped in the groove, and the inner spring is sleeved on the connecting shaft rod between the sliding sleeve and one positioning ring; the end part of the connecting shaft rod extending out of one end of the box body is provided with a connecting cap, the connecting cap is provided with a containing groove, and an outer spring is sleeved on the connecting shaft rod between the connecting cap and the box body.
In the gearbox gear shifting mechanism, the clamping jaws are splayed.
The gearbox gear shifting mechanism comprises a bracket, a pivot, a shaft sleeve, a connecting arm and a driving arm, wherein the bracket is fixedly connected to the outer side of the box body, the connecting shaft rod penetrates through the bracket, the pivot is fixedly connected to the upper end of the bracket, the shaft sleeve is rotatably sleeved on the pivot, the connecting arm and the driving arm which are perpendicular to the shaft sleeve are fixedly connected to the outer side of the shaft sleeve respectively, the connecting arm is connected with the gear shifting handle device through a pull wire, and the end part of the driving arm is accommodated in an accommodating groove of the connecting cap.
In the above transmission gear shifting mechanism, the pivot shaft and the connecting shaft rod are perpendicular to each other.
In conclusion, the beneficial technical effects of the utility model are as follows:
the utility model controls the motion of the synchronous mechanism through the swing arm mechanism, keeps the driving force to the clutch ring through the elastic force of the inner spring and the outer spring, solves the problem that the clutch ring is not smoothly matched with the driving tooth key or the driven tooth key or even is out of gear, and thus smoothly realizes the smoothness of gear shifting. The gear shifting device has the characteristics of simplicity and convenience in operation, reliability in gear shifting and high safety.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the knock-out body of the present invention;
FIG. 3 is a schematic view of the synchronization mechanism and rocker mechanism of the present invention;
FIG. 4 is a cross-sectional view of the present invention in a neutral state;
FIG. 5 is a cross-sectional view of the present invention in a high gear state;
fig. 6 is a sectional view of the present invention in a low gear state.
Figure 1, a box body; 2. an input shaft; 3. a speed reduction mechanism; 31. a deceleration shaft; 32. a high speed output gear; 33. a low speed output gear; 34. a reduction gear; 35. an intermediate shaft; 4. a power take-off mechanism; 5. a shift gear set; 51. a spline shaft; 52. an output gear; 53. a high-speed gear; 531. a high speed spline; 54. a low-speed gear; 541. a low speed spline; 55. a drive spline; 56. a clutch ring; 561. a groove; 6. a synchronization mechanism; 61. a connecting shaft rod; 611. a connecting cap; 6111. A containing groove; 62. a claw; 63. a sliding sleeve; 64. a positioning ring; 65. an inner spring; 66. an outer spring; 7. a rocker arm mechanism; 71. a support; 72. a pivot; 73. a shaft sleeve; 74. a connecting arm; 75. a driving arm.
Detailed Description
The utility model is described in further detail below with reference to figures 1-6.
As shown in fig. 1-6, a gearbox gear shifting mechanism comprises a box body 1, an input shaft 2 is arranged in the box body 1, an input gear of the input shaft 2 is in transmission connection with a speed reducing mechanism 3, the speed reducing mechanism 3 is in transmission connection with a power output mechanism 4, and a gear shifting gear set 5 is in transmission connection between the speed reducing mechanism 3 and the power output mechanism 4; the gear shifting gear set 5 comprises a spline shaft 51, an output gear 52, a high-speed gear 53 and a low-speed gear 54, the output gear 52, the high-speed gear 53 and the low-speed gear 54 are sequentially and coaxially arranged on the spline shaft 51, the output gear 52 is clamped on the spline shaft 51 and is in transmission connection with the power output mechanism 4, and the high-speed gear 53 and the low-speed gear 54 are both sleeved on the spline shaft 51 through bearings (not shown in the figure); the high-speed gear 53 is provided with a coaxial high-speed toothed key 531 extending towards the direction of the low-speed gear 54, the low-speed gear 54 is provided with a coaxial low-speed toothed key 541 extending towards the direction of the high-speed gear 53, the spline shaft 51 between the high-speed toothed key 531 and the low-speed toothed key 541 is clamped with the driving toothed key 55, the outer ring toothed shapes of the high-speed toothed key 531, the low-speed toothed key 541 and the driving toothed key 55 are the same, the clutch ring 56 is sleeved outside the driving toothed key 55, the clutch ring 56 is provided with clutch teeth matched with the high-speed toothed key 531, the low-speed toothed key 541 and the driving toothed key 55 on the inner side, the clutch ring 56 can slide along the axial direction of the spline shaft 51 on the high-speed toothed key 531, the low-speed toothed key 541 and the driving toothed key 55, and the outer edge of the clutch ring 56 is provided with a ring-shaped groove 561; the clutch ring 56 is connected with a synchronizing mechanism 6 for adjusting the gear shifting state of the clutch ring, and the synchronizing mechanism 6 is connected with a rocker mechanism 7 for driving the rocker mechanism to work.
As shown in fig. 2, the speed reducing mechanism 3 includes a speed reducing shaft 31, a high-speed output gear 32, a low-speed output gear 33 and a speed reducing gear 34, wherein the speed reducing shaft 31 is coaxially and fixedly connected with the speed reducing gear 34, the high-speed output gear 32 and the low-speed output gear 33 in sequence; the high-speed output gear 32 meshes with the high-speed gear 53, and the low-speed output gear 33 meshes with the low-speed gear 54.
As shown in fig. 4, 5 and 6, the thickness of the clutch ring 56 of the present embodiment is smaller than the thickness of the driving splines 55 and is larger than the thicknesses of the high-speed splines 531 and the low-speed splines 541, so that the clutch ring 56 can be ensured to be simultaneously engaged with the high-speed splines 531 and the driving splines 55 or simultaneously engaged with the low-speed splines 541 and the driving splines 55 when sliding on the high-speed splines 531, the low-speed splines 541 and the driving splines 55.
As shown in fig. 2 and 3, the synchronizing mechanism 6 of the present embodiment includes a connecting shaft rod 61, a jaw 62, a sliding sleeve 63, a positioning ring 64, an inner spring 65 and an outer spring 66, one end of the connecting shaft rod 61 penetrates through the box body 1, the other end of the connecting shaft rod 61 is embedded in a sleeve (not shown in the figure), the sleeve is fixedly connected to the inner side of the box body, two positioning rings 64 are arranged on the connecting shaft rod 61 at the inner side of the box body 1 at intervals, the two positioning rings 64 are fixedly connected with the connecting shaft rod 61, the sliding sleeve 63 is sleeved on the connecting shaft rod 61 between the two positioning rings 64, the inner spring 65 is sleeved on the connecting shaft rod 61 between the sliding sleeve 63 and one positioning ring 64, one end of the inner spring 65 abuts against the positioning ring 64, and the other end abuts against the sliding sleeve 63; the claw 62 is fixedly connected to the sliding sleeve 63, the claw 62 is splayed, the claw 62 is clamped in the groove 561, and the claw 62 can drive the clutch ring 56 to slide through the sliding of the sliding sleeve 63, so that the clutch ring 56 is clamped with the high-speed toothed key 531 and the driving toothed key 55 at the same time, or clamped with the low-speed toothed key 541 and the driving toothed key 55 at the same time, and stable gear shifting is achieved. The end of the connecting shaft rod 61 extending out of one end of the box body 1 is provided with a connecting cap 611, the connecting cap 611 is provided with a containing groove 6111, and the connecting shaft rod 61 between the connecting cap 611 and the box body 1 is sleeved with an outer spring 66.
The rocker mechanism 7 of the present embodiment includes a bracket 71, a pivot 72, a sliding sleeve 63, a connecting arm 74 and a driving arm 75, the bracket 71 is fixedly connected to the outer side of the box body 1, the connecting shaft rod 61 penetrates through the bracket 71, one end of the outer spring 66 abuts against the connecting cap 611, and the other end abuts against the bracket 71; the pivot 72 is fixedly connected to the bracket 71, the shaft sleeve 73 is rotatably sleeved on the pivot 72, the pivot 72 is perpendicular to the connecting shaft rod 61, the outer side of the shaft sleeve 73 is fixedly connected to the connecting arm 74 and the driving arm 75 perpendicular thereto, respectively, the connecting arm 74 is connected to a shift handle device (not shown) through a pull wire (not shown), and the end of the driving arm 75 is received in the receiving groove 6111 of the connecting cap 611.
The gear shifting working process of the gearbox of the utility model is as follows:
in the initial state, the clutch ring 56 is positioned by the shift lever device and the cable in the state shown in fig. 4, that is, the clutch ring 56 is located within the width of the drive splines 55. As shown in fig. 2, when the motor drives the input shaft 2 to rotate, the gear on the input shaft 2 drives the gear of the intermediate shaft 35 to rotate, thereby driving the reduction gear 34 on the reduction shaft 31 to rotate, the reduction gear 34 drives the high-speed output gear 32 and the low-speed output gear 33 to rotate synchronously, and since the high-speed output gear 32 and the low-speed output gear 33 are respectively meshed with the high-speed gear 53 and the low-speed gear 54 of the shift gear set 5, the spline shaft 51 and the output gear 52 which are in clamping connection with the driving spline 55 are both in a static state.
As shown in fig. 5, when the shift lever device is switched to a high-speed gear, the shift lever device pulls a pull wire, the connecting rod 61 of the synchronizing mechanism 6 compresses the outer spring 66 to move towards the box 1 through the driving arm 75 of the rocker mechanism 7, the claw 62 drives the clutch ring 56 to move towards the direction of the high-speed spline 531, when the inner side of the spline of the clutch ring 56 does not correspond to the high-speed spline 531, the clutch ring 56 is pressed against the edge of the high-speed spline 531 due to the compression of the inner spring 65, at this time, the input shaft 2 drives the high-speed gear 53 and the low-speed gear 54 to rotate through the reduction mechanism 3, when the spline of the clutch ring 56 corresponds to the high-speed spline 531 at the side of the high-speed gear 53, the clutch ring 56 slides onto the high-speed spline 531 at the side of the high-speed gear 53 instantaneously under the elastic force of the inner spring 65, and the high-speed spline 531 at the side of the high-speed gear 53 is engaged with the driving spline 55 through the clutch ring 56, the high-speed output gear 32 is meshed with the high-speed gear 53, and the spline shaft 51 and the output gear 52 are driven to synchronously rotate through the clamping connection of the high-speed spline 531 and the driving spline 55, so that the high-speed output of the power output mechanism 4 is realized.
As shown in fig. 6, when the shift lever device is switched to a low speed gear, the shift lever device pulls a wire, the connecting rod 61 of the synchronizing mechanism 6 moves to the outside of the housing 1 through the driving arm 75 of the rocker mechanism 7, the dog 62 drives the clutch ring 56 to move in the direction of the low speed spline 541, when the inside of the spline of the clutch ring 56 does not correspond to the low speed spline 541, the inner spring 65 compresses to make the clutch ring 56 abut against the edge of the low speed spline 541, the input shaft 2 drives the high speed gear 53 and the low speed gear 54 to rotate through the speed reduction mechanism 3, when the spline of the clutch ring 56 corresponds to the low speed spline 541 on the side of the low speed gear 54, the clutch ring 56 slides instantaneously onto the low speed spline 541 on the side of the low speed gear 54 under the elastic force of the inner spring 65, and the low speed spline 541 on the side of the low speed gear 54 and the driving spline 55 are engaged through the clutch ring 56, and the low speed output gear 33 is engaged with the low speed gear 54, the spline shaft 51 and the output gear 52 are driven to rotate by the clamping connection of the low-speed toothed key 541 and the driving toothed key 55, so that the output of the power output mechanism 4 with low power, low rotating speed and high torque is realized.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.
Claims (8)
1. A gearbox gear shifting mechanism comprises a box body, wherein an input shaft is arranged in the box body, an input gear of the input shaft is in transmission connection with a speed reducing mechanism, the speed reducing mechanism is in transmission connection with a power output mechanism, and the gearbox gear shifting mechanism is characterized in that a gear shifting gear set capable of changing gears is in transmission connection between the speed reducing mechanism and the power output mechanism, the gear shifting gear set comprises a spline shaft, an output gear, a high-speed gear and a low-speed gear, the output gear, the high-speed gear and the low-speed gear are sequentially and coaxially arranged on the spline shaft, the output gear is clamped on the spline shaft and is in transmission connection with the power output mechanism, the high-speed gear and the low-speed gear are both sleeved on the spline shaft through bearings, the high-speed gear is provided with a coaxial high-speed tooth key extending towards the direction of the low-speed gear, the low-speed gear is provided with a coaxial low-speed tooth key extending towards the direction of the high-speed gear, a clutch ring is clamped outside the driving tooth key and can slide on the high-speed tooth key, the low-speed tooth key and the driving tooth key along the axial direction of the spline shaft; the clutch ring is connected with a synchronizing mechanism used for adjusting the gear state of the clutch ring, and the synchronizing mechanism is connected with a rocker mechanism driving the synchronizing mechanism to work.
2. A transmission shifting mechanism according to claim 1, wherein the clutch ring has clutch teeth on its inner side for engaging the high speed splines, the low speed splines and the drive splines, and the outer rim of the clutch ring has a ring-shaped recess.
3. A gearbox shifting mechanism according to claim 1 or claim 2, wherein the thickness of the clutch collar is less than the thickness of the drive splines and is greater than both the high speed splines and the low speed splines.
4. A gearbox shifting mechanism according to claim 1, wherein the reduction mechanism comprises a reduction shaft, a high-speed output gear, a low-speed output gear and a reduction gear, and the reduction shaft is coaxially fixedly connected with the reduction gear, the high-speed output gear and the low-speed output gear in sequence; the high-speed output gear and the low-speed output gear are respectively meshed with the high-speed gear and the low-speed gear.
5. The gearbox gearshift mechanism according to claim 1, wherein the synchronizing mechanism comprises a connecting shaft rod, a jaw, a sliding sleeve, positioning rings, an inner spring and an outer spring, wherein one end of the connecting shaft rod penetrates out of the box body, the other end of the connecting shaft rod is embedded in the sleeve, the sleeve is fixedly connected to the inner side of the box body, two positioning rings are arranged on the connecting shaft rod at the inner side of the box body at intervals, the connecting shaft rod between the two positioning rings is sleeved with the sliding sleeve, the jaw is fixedly connected to the sliding sleeve, the jaw is clamped in the groove, and the connecting shaft rod between the sliding sleeve and one positioning ring is sleeved with the inner spring; the end part of the connecting shaft rod extending out of one end of the box body is provided with a connecting cap, the connecting cap is provided with a containing groove, and an outer spring is sleeved on the connecting shaft rod between the connecting cap and the box body.
6. A gearbox shifting mechanism according to claim 5, wherein the dog is splayed.
7. The transmission shifting mechanism according to claim 5, wherein the rocker mechanism comprises a bracket, a pivot, a shaft sleeve, a connecting arm and a driving arm, the bracket is fixedly connected to the outside of the housing, the connecting shaft passes through the bracket, the pivot is fixedly connected to the upper end of the bracket, the shaft sleeve is rotatably sleeved on the pivot, the connecting arm and the driving arm are respectively and fixedly connected to the outside of the shaft sleeve and perpendicular to the shaft sleeve, the connecting arm is connected to the shift lever device through a pull wire, and the end of the driving arm is accommodated in the accommodating groove of the connecting cap.
8. A gearbox shifting mechanism according to claim 7, wherein the pivot axis and the connecting shaft are perpendicular to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121057941.0U CN215487595U (en) | 2021-05-17 | 2021-05-17 | Gearbox gearshift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121057941.0U CN215487595U (en) | 2021-05-17 | 2021-05-17 | Gearbox gearshift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215487595U true CN215487595U (en) | 2022-01-11 |
Family
ID=79778561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121057941.0U Active CN215487595U (en) | 2021-05-17 | 2021-05-17 | Gearbox gearshift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215487595U (en) |
-
2021
- 2021-05-17 CN CN202121057941.0U patent/CN215487595U/en active Active
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