CN209818662U - Gear box suitable for gear sets with different transmission ratios - Google Patents
Gear box suitable for gear sets with different transmission ratios Download PDFInfo
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- CN209818662U CN209818662U CN201920128130.1U CN201920128130U CN209818662U CN 209818662 U CN209818662 U CN 209818662U CN 201920128130 U CN201920128130 U CN 201920128130U CN 209818662 U CN209818662 U CN 209818662U
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Abstract
The utility model belongs to the technical field of gear drive, a gear box suitable for different drive ratio gear sets is related to, it includes the box, the last rotation frame of box is equipped with first pivot and second pivot, the cover is equipped with first gear in the first pivot, the cover is equipped with the second gear in the second pivot, still include the transmission shaft, the cover is equipped with drive gear on the transmission shaft, drive gear meshes with first gear and second gear respectively, the arc spout has been seted up on the box, the centre of a circle of spout is the axle center of first pivot, the transmission shaft is worn to locate in the spout, transmission shaft and spout sliding fit, be equipped with the locking mechanical system who is used for pinning the transmission shaft on the box; the utility model discloses when having the drive ratio that changes the internal gear train of box, only need to change one in the middle of input gear and the output gear, make required spare gear quantity halve, and the drive ratio change is more gentle, is convenient for realize the effect to the meticulous regulation and control of drive ratio.
Description
Technical Field
The utility model belongs to the technical field of gear drive's technique and specifically relates to a gear box suitable for different drive ratio gear sets is related to.
Background
The gear transmission is one of several main power transmission modes, and compared with belt-roller transmission, the gear transmission is more accurate, the slipping condition is avoided, and compared with chain-sprocket transmission, the gear transmission can bear larger load. The basic structure of a gear transmission comprises an input shaft, an input gear, an output shaft, an output gear and a gear box, and sometimes a transmission shaft and a transmission gear are arranged in the gear box.
At present, chinese patent with publication number CN203082176U discloses a water pump gear box, which comprises a box body, an oil pump arranged above the box body, an input shaft, an input gear, an output shaft, an output gear, a transmission shaft and a transmission gear sequentially arranged in the box body along the longitudinal direction of the box body, wherein one end of the input shaft is connected with a power shaft, and the other end of the input shaft is provided with the input gear; a transmission gear is arranged on the transmission shaft and is meshed with the input gear; an output gear is arranged on the output shaft, and the input gear is respectively meshed with the transmission gear and the output gear; the box body is connected with a water pump arranged in front of the box body through an output shaft, and the rear part of the box body is connected with a power shaft through an input shaft.
The water pump gear box belongs to one kind of gear transmission, and is the same as other gear boxes in that the positions of an input shaft hole capable of allowing an input shaft to pass through and an output shaft hole capable of allowing an output shaft to pass through on a box body are often determined, namely the distance between the axis of an input gear and the axis of an output gear is constant. In order to change the gear ratio of the gear train, the input gear and the output gear need to be replaced at the same time, that is, the input gear and the output gear are equipped with the corresponding sizes. When the radius of one of the two is increased, the radius of the other one is necessarily reduced, so that the transmission ratio is changed quickly and is difficult to finely regulate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gear box suitable for different drive ratio gear trains, when it has the drive ratio that changes gear train in the box, only need to change one in the middle of input gear and the output gear, make required reserve gear quantity halve, and the drive ratio change is more slow, is convenient for realize the effect to the meticulous regulation and control of drive ratio.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides a gear box suitable for different drive ratio gear sets, includes the box, the last rotating frame of box is equipped with first pivot and second pivot, and the cover is equipped with first gear in the first pivot, and the cover is equipped with the second gear in the second pivot, still includes the transmission shaft, the cover is equipped with drive gear on the transmission shaft, drive gear respectively with first gear and second gear meshing, and the axle center interval of first pivot and second pivot is greater than the radius sum of first gear and second gear, the arc spout has been seted up on the box, the centre of a circle of spout is the axle center of first pivot, in the spout is worn to locate by the transmission shaft, transmission shaft and spout sliding fit, be equipped with the locking mechanical system who is used for pinning the transmission shaft on the box.
By adopting the technical scheme, the distance between the axes of the first rotating shaft and the second rotating shaft is greater than the sum of the radiuses of the first gear and the second gear, so that the first gear is not in direct contact with the second gear and is driven by the transmission gears meshed with the first gear and the second gear; the sliding groove takes the axis of the first rotating shaft as the center of a circle, so when the transmission shaft slides in the sliding groove, the distance between the axis of the transmission shaft and the axis of the first rotating shaft is always kept unchanged, the transmission gear sleeved on the transmission shaft is always meshed with the first gear, meanwhile, the distance between the axis of the transmission shaft and the axis of the second rotating shaft is changed, and under the condition that the transmission gear is meshed with the second gear and the radius of the transmission gear is unchanged, the radius of the second gear is changed, and the transmission ratio of the first gear to the second gear is changed; any one of the first gear and the second gear is used as an input gear, the other one is used as an output gear, when the transmission ratio of the gear set in the box body is changed, only one of the input gear and the output gear needs to be replaced, the number of the required standby gears is halved, the transmission ratio changes slowly, and fine regulation and control of the transmission ratio are facilitated.
The utility model discloses further set up to: the locking mechanism comprises a locking block arranged on the inner wall of the box body, a locking rod penetrates through the locking block, the locking rod is in threaded fit with the locking block, and the locking rod is abutted to one side, back to the second rotating shaft, of the transmission shaft.
By adopting the technical scheme, the lock rod is abutted against one side of the transmission shaft, which is back to the second rotating shaft, so that the transmission gear on the transmission shaft cannot move back to the second rotating shaft and is tightly meshed with the second gear on the second rotating shaft; when the positions of the transmission shaft and the transmission gear need to be adjusted, the lock rod is rotated to move along the length direction of the lock rod, and the lock rod always abuts against the second rotating shaft.
The utility model discloses further set up to: the locking block rotating frame is arranged on the inner wall of the box body, and the rotating center of the locking block is parallel to the transmission shaft.
Through adopting above-mentioned technical scheme, the locking piece rotating turret establishes on the box for the locking lever also can the free rotation, and directional transmission shaft's axle center all the time can support the transmission shaft better.
The utility model discloses further set up to: the screw rod is equipped with the backup pad towards transmission shaft one end rotating turret, the backup pad is the arc, and the backup pad is laminated with the lateral wall of transmission shaft.
Through adopting above-mentioned technical scheme, set up the lateral wall laminating of arc backup pad and transmission shaft, can guarantee the stable cooperation of locking lever and transmission shaft, prevent to appear the condition of skidding between locking lever and the transmission shaft
The utility model discloses further set up to: locking mechanical system is including sliding the dog that sets up in the spout, the dog is located transmission shaft second pivot one side dorsad, and the dog has the pterygoid lamina towards one side rigid coupling of box inside, logical groove has been seted up on the box, leads to the inslot and is on a parallel with the spout setting, leads to the inslot and wears to be equipped with fixing bolt, fixing bolt and pterygoid lamina screw-thread fit.
By adopting the technical scheme, the fixing bolt is screwed in, the nut of the fixing bolt is tightly pressed on the outer side wall of the box body, the wing plate is fixed by utilizing the friction force between the fixing bolt and the outer side wall, and the stop block is fixed to block the transmission shaft; when the position of the transmission shaft is adjusted, the fixing bolt is unscrewed and slides in the through groove.
The utility model discloses further set up to: and anti-skid grains are arranged on the outer side wall of the box body and are positioned on two sides of the through groove.
Through adopting above-mentioned technical scheme, set up anti-skidding line in logical groove both sides, greatly increased fixing bolt's nut and the dynamic friction factor between the box lateral wall to increase the frictional force between the two, can be better with pterygoid lamina and dog fixed.
The utility model discloses further set up to: the transmission shaft rotating frame is characterized in that an I-shaped sliding block is arranged on the box body, two ends of the sliding block are respectively abutted to the inner side wall and the outer side wall of the box body, the middle section of the sliding block is arranged in the sliding groove in a sliding mode, and the transmission shaft rotating frame is arranged on the sliding block.
Through adopting above-mentioned technical scheme, the both ends of "worker" style of calligraphy slider offset with the inside wall and the lateral wall of box respectively, can't incline for its axis direction, and then make the orientation of transmission shaft keep unchangeable, support transmission gear steadily.
The utility model discloses further set up to: the outer side of the box body is provided with indication scales, and the sliding block is correspondingly provided with a pointer.
Through adopting above-mentioned technical scheme, pointer and instruction scale cooperation can adjust the position of transmission shaft and drive gear fast accurately according to the reading that the pointer points to, cooperate with the second gear that corresponds under the specific drive ratio.
To sum up, the utility model discloses a beneficial technological effect does:
1. when the transmission ratio of the gear set in the box body is changed, only one of the input gear and the output gear needs to be replaced, so that the number of the required standby gears is reduced by half;
2. the change of the transmission ratio is slow, so that the fine control of the transmission ratio is convenient to realize;
3. the position of the transmission gear can be adjusted quickly and accurately according to the reading of the indication scale.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
fig. 2 is a schematic view of the internal structure of embodiment 1 of the present invention;
FIG. 3 is a schematic view showing the connection between a transmission shaft and a case in embodiment 1;
FIG. 4 is an enlarged view at A in FIG. 1;
fig. 5 is a schematic structural view for embodying the lock mechanism in embodiment 2.
In the figure, 1, a box body; 2. a first rotating shaft; 3. a second rotating shaft; 4. a first gear; 5. a second gear; 6. a drive shaft; 7. a transmission gear; 8. a chute; 9. a locking mechanism; 10. a through hole; 11. a through groove; 12. anti-skid lines; 13. a slider; 14. indicating scales; 15. a pointer; 91. a locking block; 92. a lock lever; 93. a support plate; 94. a stopper; 95. a wing plate; 96. and (5) fixing the bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, for the utility model discloses a gear box suitable for different drive ratio gear sets, including box 1. Through holes 10 are formed in the left side and the right side of the box body 1, and gears in the box body 1 can be replaced through the through holes 10. The box 1 front side is put up and is equipped with first pivot 2 to seted up spout 8, transmission shaft 6 in the spout 8, box 1 rear side is put up and is equipped with second pivot 3. The first rotating shaft 2, the second rotating shaft 3 and the transmission shaft 6 are parallel to each other and are respectively vertical to the side wall of the box body 1 where the first rotating shaft, the second rotating shaft and the transmission shaft are arranged, and a first gear 4, a second gear 5 and a transmission gear 7 are sequentially coaxially sleeved on the first rotating shaft, the second rotating shaft and the transmission shaft.
Referring to fig. 1 and 2, a first gear 4 is fixedly connected with a first rotating shaft 2, a second gear 5 is fixedly connected with a second rotating shaft 3, and a transmission gear 7 is fixedly connected with a transmission shaft 6. The distance between the axes of the first rotating shaft 2 and the second rotating shaft 3 is larger than the sum of the radiuses of the first gear 4 and the second gear 5, namely, the first gear 4 is not in contact with the second gear 5. The sliding groove 8 is arc-shaped, and takes the axis of the first rotating shaft 2 as the center of a circle, namely, the distance between the transmission shaft 6 and the axis of the first rotating shaft 2 is constant all the time and is equal to the sum of the radiuses of the transmission gear 7 and the first gear 4, so that the transmission gear 7 is always meshed with the first gear 4.
Referring to fig. 1 and 2, when the transmission ratio of the first gear 4 and the second gear 5 is changed, the radius of the first gear 4 is kept unchanged, the second gear 5 with different sizes is replaced, and the transmission shaft 6 is moved along the chute 8, so that the distance between the transmission shaft 6 and the axis of the second rotating shaft 3 is always equal to the sum of the radii of the transmission gear 7 and the second gear 5, namely, the transmission gear 7 is always meshed with the second gear 5, and the transmission between the first gear 4 and the second gear 5 is realized.
Referring to fig. 3, the box body 1 is provided with an i-shaped sliding block 13 in a sliding manner, the sliding block 13 is integrally arc-shaped, the width of the middle section of the sliding block is equal to the width of the sliding groove 8, the thickness of the sliding block is equal to the depth of the sliding groove 8, the sliding block is in sliding fit with the sliding groove 8, and the width of the two ends of the sliding block is larger than the width of the sliding groove 8 and respectively abuts against the inner side wall and the outer. The transmission shaft 6 is a rotating frame arranged on the sliding block 13, and the sliding block 13 can only move along the length direction of the sliding chute 8, so that the transmission shaft 6 can only rotate around the axis of the transmission shaft or move along the length direction of the sliding chute 8.
Referring to fig. 3, the casing 1 is provided with a locking mechanism 9, and when the transmission gear 7 (see fig. 2) is engaged with the second gear 5 (see fig. 2), the locking mechanism 9 locks the transmission shaft 6 so that it cannot move away from the second rotation shaft 3. The locking mechanism 9 is matched with the sliding block 13 to fix the transmission shaft 6 and the transmission gear 7 (see fig. 2) and ensure the stable matching of the transmission gear 7 (see fig. 2) with the first gear 4 (see fig. 2) and the second gear 5 (see fig. 2).
Referring to fig. 1 and 4, an indication scale 14 is arranged on the outer side wall of the rear side of the box body 1, the indication scale 14 is arranged along the length direction of the sliding chute 8, and a pointer 15 is fixedly arranged at one end of the sliding block 13, which is located outside the box body 1. When the transmission ratio of the gear box is fixed, the radius of the corresponding second gear 5 (see fig. 2) is also fixed, at the moment, the shape of a triangle formed by the axle centers of the first gear 4 (see fig. 2), the second gear 5 (see fig. 2) and the transmission gear 7 (see fig. 2) is fixed, the angle of the vertex angle where the axle center of the first gear 4 (see fig. 2) is located can be calculated according to the lengths of three sides of the triangle, the angle is displayed on the indication scale 14, and the reading of the indication scale 14 corresponds to the transmission ratio of the gear box one by one. The positions of the transmission shaft 6 (see figure 2) and the transmission gear 7 (see figure 2) are adjusted according to the reading of the indication scale 14, and the method is quicker and more accurate.
Example one
Referring to fig. 3, the locking mechanism 9 includes a lock block 91, a lock lever 92, and a support plate 93. The locking block 91 is rotatably erected on the inner side wall of the rear side of the box body 1 and is positioned on one side of the transmission shaft 6, which is back to the second rotating shaft 3 (see fig. 2), and the rotating center of the locking block is also perpendicular to the rear side wall of the box body 1. The lock rod 92 passes through the lock block 91, is in threaded fit with the lock block 91, and points to the axis of the transmission shaft 6 along the length direction of the lock rod. The supporting plate 93 is rotatably mounted on one end of the lock rod 92 facing the transmission shaft 6, and the supporting plate 93 is arc-shaped and attached to the side wall of the transmission shaft 6.
When the sliding block 13 moves along the sliding groove 8, the locking rod 92 is screwed to move along with the transmission shaft 6, at the moment, the locking block 91 rotates on the inner wall of the box body 1, the locking rod 92 always points to the axis of the transmission shaft 6, the supporting plate 93 is always attached to the transmission shaft 6, and after the position of the supporting plate is determined, the supporting plate abuts against the transmission shaft 6, so that the transmission shaft 6 cannot move.
The implementation principle of the above embodiment is as follows:
when the gear ratio of the gearbox is changed, the sliding block 13 slides in the sliding groove 8 until the pointer 15 points to the indication scale 14 corresponding to the gear ratio for reading. The second gear wheel 5 of the corresponding radius is then replaced, while the transmission gear wheel 7 is still in mesh with the second gear wheel 5. In the process, the lock rod 92 is screwed, and the lock rod 92 is tightly abutted to one side of the transmission shaft 6, which is back to the second rotating shaft 3, through the support plate 93, so that the transmission shaft 6 is limited.
Example two
Referring to fig. 5, the locking mechanism 9 includes a stopper 94, the stopper 94 is arc-shaped, is slidably engaged with the sliding groove 8, is located on a side of the slider 13 opposite to the second rotating shaft 3 (see fig. 2), and is fixedly provided with a wing 95 on a side facing the inside of the box body 1. An arc-shaped through groove 11 is formed in the rear side wall of the box body 1, and the through groove 11 is parallel to the sliding groove 8. The fixing bolt 96 is screwed with the wing plate 95 after passing through the through slot 11, and the nut thereof is tightly pressed on the outer side wall of the rear side of the box body 1, so that the wing plate 95 is fixed by friction, and the stopper 94 is also fixed therewith, and blocks the slider 13 from moving back to the second rotating shaft 3 (see fig. 2).
Referring to fig. 5, the outer side wall of the rear side of the box body 1 is further provided with anti-slip threads 12, and the anti-slip threads 12 are located on two sides of the through groove 11 and are used for increasing the friction force between the nut of the fixing bolt 96 and the box body 1.
The implementation principle of the above embodiment is as follows:
when the position of the transmission shaft 6 is adjusted, the fixing bolt 96 is loosened, and the stopper 94 moves in the slide groove 8 along with the slider 13. When the sliding block 13 slides to a designated position, the fixing bolt 96 is screwed in, so that the nut thereof is tightly pressed on the outer side wall of the box body 1, the stopper 94 is fixed, the sliding block 13 is stopped, and the transmission shaft 6 is limited.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a gear box suitable for different drive ratio gear sets, includes box (1), box (1) is gone up the rotating frame and is equipped with first pivot (2) and second pivot (3), and the cover is equipped with first gear (4) on first pivot (2), and the cover is equipped with second gear (5), its characterized in that on second pivot (3): still include transmission shaft (6), the cover is equipped with drive gear (7) on transmission shaft (6), and drive gear (7) mesh with first gear (4) and second gear (5) respectively, and the axle center interval of first pivot (2) and second pivot (3) is greater than the radius sum of first gear (4) and second gear (5), arc spout (8) have been seted up on box (1), and the centre of a circle of spout (8) is the axle center of first pivot (2), in spout (8) is worn to locate in transmission shaft (6), transmission shaft (6) and spout (8) sliding fit, be equipped with locking mechanical system (9) that are used for pinning transmission shaft (6) on box (1).
2. A gearbox adapted for use with a gear set of different gear ratios as defined in claim 1 wherein: locking mechanical system (9) are including setting up locking piece (91) on box (1) inner wall, wear to be equipped with locking lever (92) on locking piece (91), locking lever (92) and locking piece (91) screw-thread fit, and locking lever (92) offset with one side of transmission shaft (6) second pivot (3) dorsad.
3. A gearbox adapted for use with a gear set of different gear ratios as defined in claim 2 wherein: the locking block (91) is rotatably erected on the inner wall of the box body (1), and the rotating center of the locking block (91) is parallel to the transmission shaft (6).
4. A gearbox adapted for use with a gear set of different gear ratios as defined in claim 3 wherein: locking lever (92) are equipped with backup pad (93) towards transmission shaft (6) one end rotating turret, backup pad (93) are the arc, and backup pad (93) laminate with the lateral wall of transmission shaft (6).
5. A gearbox adapted for use with a gear set of different gear ratios as defined in claim 1 wherein: locking mechanical system (9) are including sliding dog (94) that set up in spout (8), dog (94) are located transmission shaft (6) second pivot (3) one side dorsad, and dog (94) have pterygoid lamina (95) towards the inside one side rigid coupling of box (1), logical groove (11) have been seted up on box (1), lead to groove (11) and be on a parallel with spout (8) setting, wear to be equipped with fixing bolt (96) in leading to groove (11), fixing bolt (96) and pterygoid lamina (95) screw-thread fit.
6. A gearbox adapted for use with a gear set of different gear ratios as defined in claim 5 wherein: the anti-skid box is characterized in that anti-skid grains (12) are arranged on the outer side wall of the box body (1), and the anti-skid grains (12) are located on two sides of the through groove (11).
7. A gearbox adapted for use with a gear set of different gear ratios as defined in claim 1 wherein: the novel box is characterized in that an I-shaped sliding block (13) is arranged on the box body (1), two ends of the sliding block (13) are respectively abutted to the inner side wall and the outer side wall of the box body (1), the middle section of the sliding block (13) is slidably arranged in the sliding groove (8), and the transmission shaft (6) is rotatably erected on the sliding block (13).
8. A gearbox adapted for use with a gear set of different gear ratios as defined in claim 7 wherein: the outer side of the box body (1) is provided with indication scales (14), and the sliding block (13) is correspondingly provided with a pointer (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920128130.1U CN209818662U (en) | 2019-01-24 | 2019-01-24 | Gear box suitable for gear sets with different transmission ratios |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920128130.1U CN209818662U (en) | 2019-01-24 | 2019-01-24 | Gear box suitable for gear sets with different transmission ratios |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209818662U true CN209818662U (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920128130.1U Active CN209818662U (en) | 2019-01-24 | 2019-01-24 | Gear box suitable for gear sets with different transmission ratios |
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| Country | Link |
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| CN (1) | CN209818662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855901A (en) * | 2021-02-24 | 2021-05-28 | 北京清航紫荆装备科技有限公司 | Gear box and unmanned helicopter |
-
2019
- 2019-01-24 CN CN201920128130.1U patent/CN209818662U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855901A (en) * | 2021-02-24 | 2021-05-28 | 北京清航紫荆装备科技有限公司 | Gear box and unmanned helicopter |
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