CN216242169U - Gear box gear shifting mechanism with compact structure - Google Patents
Gear box gear shifting mechanism with compact structure Download PDFInfo
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- CN216242169U CN216242169U CN202122923451.0U CN202122923451U CN216242169U CN 216242169 U CN216242169 U CN 216242169U CN 202122923451 U CN202122923451 U CN 202122923451U CN 216242169 U CN216242169 U CN 216242169U
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- shifting
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Abstract
The utility model relates to a gear box shifting mechanism with a compact structure, which comprises a box body, an input shaft and an output shaft, wherein a first shifting gear and a second shifting gear are rotatably arranged on the input shaft, a first output gear and a second output gear are fixedly arranged on the output shaft, the input shaft is connected with a shifting spline housing through splines, the shifting spline housing is connected with a shifting fork moving assembly, the shifting fork moving assembly comprises a rack shifting fork, a shifting fork gear, a rail slide rod and a shifting fork shaft, the shifting fork shaft is connected with the shifting fork gear, the rack shifting fork is sleeved on the rail slide rod, a shifting fork part of the rack shifting fork is clamped with the shifting spline housing, and a rack part of the rack shifting fork is meshed with the shifting fork gear. The gear shifting spline sleeve is light in weight and compact in structure, the gear shifting spline sleeve shifts gears by means of front and back linear movement of the rack shifting fork, the rack shifting fork is arranged on one side of the gear shifting spline sleeve, and the fan-shaped shifting fork part of the rack shifting fork extends into the gear shifting spline sleeve to push the gear shifting spline sleeve to move, so that labor is saved; two-sided shifting fork arms are omitted, and the requirement on installation precision is not high.
Description
Technical Field
The utility model relates to the technical field of gear boxes, in particular to a gear box gear shifting mechanism with a compact structure.
Background
The existing gear box mostly adopts a gear shifting gear box for meeting the production requirement. Generally speaking, the gear shifting gearbox is mostly two velocity ratios, makes the gear shifting spline and the gear pair combination of different velocity ratios through fork mechanism, reaches the effect of the different velocity ratios of transmission. The gear shifting gear box successfully realizes multiple purposes of a heavy speed reducer, and compared with a common speed reducer, the gear shifting gear box has the technical core of a shifting fork gear shifting mechanism. The gear shifting flexibility, the machining and assembling operability and the use reliability of the mechanism are important for the normal work of the equipment.
The shifting fork shaft part of the shifting fork mechanism of the existing gear box is shown in fig. 1, the shifting fork shaft is a long shaft, the span of a box body is large, the processing difficulty is large, the shifting fork shaft is connected with a shifting fork arm, the shifting fork arm is driven to rotate through the rotation of the shifting fork shaft, so that a shifting slider is clamped into a corresponding shifting gear, the two shifting fork arms need to be centered and welded before being installed, the requirement on the installation precision is high, the misalignment of the two shifting fork arms can lead to the dislocation of the two shifting fork arms, and the shifting fork is clamped.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects, provides a gear box shifting mechanism with a compact structure, is light in weight, is suitable for occasions with high requirements on weight, and is compact in structure.
The purpose of the utility model is realized as follows:
the utility model provides a compact structure's gear box gearshift, includes box, input shaft and output shaft rotate to set up on the box, it is equipped with first gear shifting gear and second gear shifting gear to rotate on the input shaft, first output gear and second output gear have set firmly on the output shaft, the input shaft passes through the spline connection spline housing of shifting, the spline housing of shifting connects shift fork removal subassembly, shift fork removal subassembly includes rack shift fork, shift fork gear, track slide bar and selector shaft, the selector shaft passes through the axle sleeve and sets up on the box, the selector shaft is connected shift fork gear, the rack shift fork cover is established on the track slide bar, the spline housing of shifting the shift fork portion joint of rack shift fork, the rack portion and the gear engagement of shift fork of rack shift fork.
Preferably, the track slide bar is parallel to the input shaft and the output shaft.
Preferably, the gear shifting spline housing is provided with two external gears at intervals, the first gear shifting gear and the second gear shifting gear are provided with internal gears, and the internal gears are meshed with the external gears corresponding to the gear shifting spline housing.
Preferably, the fork portion extends between the two external gears.
Preferably, the fork part is fan-shaped.
Preferably, the gear shifting shaft is connected with a handle, one end of the handle is connected with a positioning pin, the positioning pin is sleeved with a spring, and a locking pin groove is formed in the box body corresponding to the positioning pin.
The utility model has the beneficial effects that:
the gear shifting spline sleeve is light in weight, suitable for occasions with high requirements on weight and compact in structure, the gear shifting spline sleeve shifts gears by means of front and back linear movement of the rack shifting fork, the rack shifting fork is arranged on one side of the gear shifting spline sleeve, and the fan-shaped shifting fork part of the rack shifting fork extends into the gear shifting spline sleeve to push the gear shifting spline sleeve to move, so that labor is saved; the rack shifting fork designed on one side saves the number and weight of parts, and a double-side shifting fork arm is omitted, so that the requirement on installation precision is not high.
Drawings
Fig. 1 shows a prior art gear shifting mechanism.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a cross-sectional view of fig. 2.
Wherein: a box body 1; an input shaft 2; an output shaft 3; a first shift gear 4; a second shift gear 5; a shifting spline housing 6; a first output gear 7; a second output gear 8; a rack shift fork 9; a fork part 9.1; a rack portion 9.2; a shift fork gear 10; a rail slide 11; a shift shaft 12; a shaft sleeve 13; a handle 14; a positioning pin 15; a spring 16.
Detailed Description
Referring to fig. 2 and 3, the utility model relates to a gear box shifting mechanism with a compact structure, which comprises a box body 1, an input shaft 2 and an output shaft 3, wherein the input shaft 2 and the output shaft 3 are rotatably arranged on the box body 1, a first shifting gear 4, a second shifting gear 5 and a shifting spline housing 6 are arranged on the input shaft 2, a first output gear 7 and a second output gear 8 are fixedly arranged on the output shaft 3, the first shifting gear 4 and the second shifting gear 5 are rotatably arranged on the input shaft 2, a first bearing is arranged between the first shifting gear 4 and the input shaft 2, a second bearing is arranged between the second shifting gear 5 and the input shaft 2, the first output gear 7 is meshed with the first shifting gear 4, the second output gear 8 is meshed with the second shifting gear 5, the input shaft 2 is connected with the shifting spline housing 6 through splines, the spline housing 6 is provided with internal splines corresponding to the input shaft 2, and the input shaft 2 is provided with an external spline.
The shifting spline housing 6 is connected with a shifting fork moving assembly, the shifting fork moving assembly comprises a rack shifting fork 9, a shifting fork gear 10, a track slide rod 11 and a shifting shaft 12, the shifting shaft 12 is arranged on the box body 1 through a shaft sleeve 13, the shifting fork gear 10 is connected with the shifting fork shaft 12, the rack shifting fork 9 is sleeved on the track slide rod 11, the rack shifting fork 9 comprises a shifting fork part 9.1 and a rack part 9.2, and the shifting fork part 9.1 of the rack shifting fork 9 is clamped with the shifting spline housing 6.
The track slide rod 11 is parallel to the input shaft 2 and the output shaft 3.
The gear shifting spline housing 6 is a duplex external gear, the gear shifting spline housing 6 is provided with two external gears at intervals, the first gear shifting gear 4 and the second gear shifting gear 5 are provided with internal gears, and the internal gears are meshed with the external gears corresponding to the gear shifting spline housing 6.
The shifting fork part 9.1 extends into the space between the two outer gears, and the shifting fork part 9.1 is fan-shaped, so that the shifting spline housing 6 is pushed to save more labor.
The rack portion 9.2 of rack shift fork 9 meshes with shift fork gear 10, shift shaft 12 connects handle 14, locating pin 15 is connected to handle 14 one end, and locating pin 15 cover is equipped with spring 16, box 1 corresponds locating pin 15 and is equipped with the lockpin groove, outwards stimulates locating pin 15, and spring 16 is compressed, and locating pin 15 breaks away from the lockpin groove, pulls handle 14, and handle 14 drives shift fork gear 10 and rotates, and shift fork gear 10 drives rack shift fork 9 rectilinear movement on track slide bar 11 to drive shift spline housing 6 card and advance first gear of shifting 4 or second gear of shifting 5, thereby realize shifting, accomplish the back of shifting, loosen locating pin 15, spring 16 resets, and locating pin 17 gets into the lockpin groove, locks.
The gear shifting mechanism is divided into two gears and a neutral gear:
neutral gear: the first shift gear 4 and the second shift gear 5 do not rotate, and the shift spline housing 6 idles with the input shaft 2.
A first gear: the handle 14 is pulled, the shifting fork gear 10 rotates to drive the rack shifting fork 9 to linearly move along the track slide bar 11, the rack shifting fork 9 shifts the shifting spline housing 6 to be clamped into the first shifting gear 4, the first shifting gear 4 rotates along with the shifting spline housing 6, and the first shifting gear 4 drives the first output gear 7 to rotate, so that the output shaft 3 is driven to rotate;
and a second stage: the handle 14 is reversely pulled, the shifting fork gear 10 rotates to drive the rack shifting fork 9 to linearly move along the track slide rod 11, the rack shifting fork 9 shifts the shifting spline housing 6 to be clamped into the second shifting gear 5, the second shifting gear 5 rotates along with the shifting spline housing 6, and the second shifting gear 5 drives the second output gear 8 to rotate, so that the output shaft 3 is driven to rotate.
In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a compact structure's gear box gearshift, includes box (1), input shaft (2) and output shaft (3) rotate and set up on box (1), it is equipped with first gear shifting gear (4) and second gear shifting gear (5) to rotate on input shaft (2), first output gear (7) and second output gear (8) have set firmly on output shaft (3), its characterized in that: the input shaft (2) is connected with a shifting spline sleeve (6) through splines, the shifting spline sleeve (6) is connected with a shifting fork moving assembly, the shifting fork moving assembly comprises a rack shifting fork (9), a shifting fork gear (10), a track sliding rod (11) and a shifting shaft (12), the shifting shaft (12) is arranged on the box body (1) through a shaft sleeve (13), the shifting fork gear (10) is connected with the shifting shaft (12), the rack shifting fork (9) is sleeved on the track sliding rod (11), the shifting fork part (9.1) of the rack shifting fork (9) is connected with the shifting fork gear (6), and the rack part (9.2) of the rack shifting fork (9) is meshed with the shifting fork gear (10).
2. A compact gearbox shifting mechanism according to claim 1, further comprising: the track sliding rod (11) is parallel to the input shaft (2) and the output shaft (3).
3. A compact gearbox shifting mechanism according to claim 1, further comprising: the gear shifting spline housing (6) is provided with two external gears at intervals, the first gear shifting gear (4) and the second gear shifting gear (5) are provided with internal gears, and the internal gears are meshed with the external gears corresponding to the gear shifting spline housing (6).
4. A compact gearbox shifting mechanism according to claim 1, further comprising: the shifting fork part (9.1) extends into the space between the two outer gears.
5. A compact gearbox shifting mechanism according to claim 1, further comprising: the shifting fork part (9.1) is fan-shaped.
6. A compact gearbox shifting mechanism according to claim 1, further comprising: the gear shifting shaft (12) is connected with a handle (14), one end of the handle (14) is connected with a positioning pin (15), the positioning pin (15) is sleeved with a spring (16), and a locking pin groove is formed in the box body (1) corresponding to the positioning pin (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122923451.0U CN216242169U (en) | 2021-11-26 | 2021-11-26 | Gear box gear shifting mechanism with compact structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122923451.0U CN216242169U (en) | 2021-11-26 | 2021-11-26 | Gear box gear shifting mechanism with compact structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216242169U true CN216242169U (en) | 2022-04-08 |
Family
ID=80956260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122923451.0U Active CN216242169U (en) | 2021-11-26 | 2021-11-26 | Gear box gear shifting mechanism with compact structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216242169U (en) |
-
2021
- 2021-11-26 CN CN202122923451.0U patent/CN216242169U/en active Active
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