CN213541201U - Front-mounted variable-speed reversing device - Google Patents
Front-mounted variable-speed reversing device Download PDFInfo
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- CN213541201U CN213541201U CN202021619900.1U CN202021619900U CN213541201U CN 213541201 U CN213541201 U CN 213541201U CN 202021619900 U CN202021619900 U CN 202021619900U CN 213541201 U CN213541201 U CN 213541201U
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- 230000007704 transition Effects 0.000 claims abstract description 16
- 230000008859 change Effects 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000009467 reduction Effects 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model discloses a front-mounted variable-speed reversing device, which comprises a box body, a box cover, a second shaft pivoted on the box cover, a first shaft pivoted on the box body, a sliding sleeve, a shifting fork and a shifting mechanism, wherein an outer gear ring of the second shaft is meshed with an inner gear ring of the sliding sleeve, an outer gear ring of the first shaft is meshed with an inner gear ring of a front gear, the inner gear ring of the front gear and an inner gear ring of a rear gear sleeved on the second shaft can be meshed with an outer gear ring of the sliding sleeve, the outer gear ring of the front gear is meshed with two first gears of two groups of transition gear sets, two second gears of the two groups of transition gear sets are respectively meshed with the outer teeth of the corresponding idle gears, and the external tooth of idler and the external tooth meshing of back gear, this application still includes two idler axles that the cantilever set up on the case lid, and the idler is installed on the idler axle that corresponds, and leaves the clearance between the interior terminal surface of idler axle and the interior terminal surface of first gear. The utility model discloses a structure is convenient for change different first gear and front gear and realizes the change of drive ratio.
Description
Technical Field
The utility model relates to an auto-parts, concretely relates to leading variable speed switching-over device.
Background
In large-scale construction, a large number of prefabricated parts are usually used in the construction process because the construction site space is limited and it is not practical to temporarily build a factory nearby, so that the prefabricated parts are usually manufactured by selecting a proper site near the construction site, and then the processed concrete prefabricated parts or large-tonnage prefabricated parts are transported to the construction site by using a special transport vehicle on the construction site, because the condition of the road conditions on the construction site is usually complex, in most cases, the reverse gear is a common working gear of the transport equipment, but the reverse gear ratio of the original gearbox is single, under the condition of no load or light load of the vehicle, the vehicle cannot run fast, and when the vehicle transports goods with larger weight or size, the vehicle cannot change the speed slower or the output torque becomes high, in order to meet the use requirements, a front-mounted speed change reversing device is provided, but the existing front-mounted speed change reversing device is limited by the structure, the transmission ratio cannot be changed by changing different input gears and transmission gears according to different requirements.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a front-mounted speed-changing reversing device to solve the above technical problems.
In order to achieve the above object, the utility model provides a following technical scheme:
a front-mounted speed-changing reversing device comprises a box body, a box cover arranged at an opening of the box body, a second shaft pivoted on the box cover, a first shaft pivoted on the box body, a sliding sleeve, a shifting fork acting on the sliding sleeve and a gear shifting mechanism driving the shifting fork to act, an outer gear ring of the second shaft is meshed with an inner gear ring of the sliding sleeve, an outer gear ring of the first shaft is meshed with an inner gear ring of a front gear, the inner gear ring of the front gear and an inner gear ring of a rear gear sleeved on the second shaft can be meshed with the outer gear ring of the sliding sleeve, the outer gear ring of the front gear is meshed with two first gears of two groups of transition gear sets positioned in the box body, two second gears of the two groups of transition gear sets are respectively meshed with outer gears of corresponding idler gears positioned in the box body, and the first gears of the same group and the second gears are, and the outer teeth of the idler wheels are meshed with the outer teeth of the rear gear, the gearbox further comprises two idler wheels, one ends of the two idler wheels are arranged on the box cover, the idler wheels are mounted on the corresponding idler wheels, and a gap is reserved between the inner end surfaces of the idler wheels and the inner end surface of the first gear.
Further, the idler shafts are fixedly arranged on the box cover, the idler wheels are installed on the corresponding idler shafts through bearings, and locking nuts connected to the ends of the idler shafts limit the bearings on the idler shafts.
The two ends of the gear set shaft are respectively installed in the corresponding installation holes in the box body and the corresponding installation holes in the box cover through corresponding bearings, and the transition gear set is installed on the corresponding gear set shaft.
Furthermore, two circular ring bosses are arranged on the inner side surface of the box cover, inner cavities of the circular ring bosses are communicated with corresponding mounting holes on the box cover to form bearing holes, a plurality of semicircular notches extending along the axial direction are uniformly distributed on the outer side surface of each circular ring boss in an annular mode, and the semicircular notches are coaxially arranged with corresponding bolt fixing connecting holes on the box cover.
Furthermore, two support tables are arranged on the inner side surface of the box cover, and the fixed ends of the idler shafts are arranged on the corresponding support tables.
Furthermore, a plurality of rib plates are arranged on the outer side face of the circular boss, and the rib plates and the semicircular gap are arranged at intervals.
Furthermore, the box cover is provided with a plurality of through holes which are annularly distributed along the axis of the second shaft, the through holes are communicated with corresponding mounting holes on a main reduction gearbox of the automobile, and the through holes can be used as fixing holes or lubricating holes.
Further, the displacement difference between the two sets of transition gear sets and the displacement difference between the two idler gears are both 180 °.
Further, the gear shifting mechanism is a pneumatic control operating valve.
According to the above technical solution, the utility model has the advantages that: because the cantilever of the idler shaft is arranged on the box cover, and the first gear and the idler shaft cannot interfere with each other, the corresponding first gear and the front gear can be replaced according to actual requirements to change the transmission ratio; because two groups of transition gear sets and two groups of idle wheels are respectively distributed on two sides of the second shaft and have a displacement difference of 180 degrees, the stress of the rear gear and the front gear is balanced, the second shaft and the first shaft are prevented from bending and deforming after being used for a long time, the work is stable, and the service life is long; the through hole on the box cover can be used as a fixing hole or a lubricating hole, so that the through hole can be selected according to actual conditions and is convenient to use; the circular boss is arranged at the mounting hole of the box cover, so that the bearing can be conveniently mounted, the strength of the mounting position of the bearing can be ensured, and the weight of a box cover blank can be greatly reduced and the processing difficulty can be reduced due to the reduction of the thickness of the box cover; because the semicircular notches on the outer side surfaces of the circular bosses and the corresponding bolt through holes are coaxially arranged, and the plurality of rib plates arranged on the outer side surfaces of the circular bosses are arranged at intervals with the plurality of semicircular notches, the rigidity of the circular bosses can be improved by the mounted bolt heads and the rib plates; the support table can shorten the cantilever length of the idler shaft, and the idler shaft has high rigidity, so that the running is stable.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages.
The present invention will be described in further detail with reference to the drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is a sectional view taken along a-a of fig. 1.
Fig. 3 is a schematic perspective view of the case cover of the present invention.
List of reference numerals: the gear shifting mechanism comprises a box body 1, a box cover 2, a circular ring boss 201, a semicircular notch 202, a through hole 203, a bolt fixing connecting hole 204, a supporting platform 205, a rib plate 206, a second shaft 3, a rear gear 4, a first shaft 5, a front gear 6, a transition gear set 7, a first gear 71, a second gear 72, an idle gear 8, a sliding sleeve 9, a shifting fork 10, a gear shifting mechanism 11, an idle gear shaft 12, a gear set shaft 13 and a locking nut 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, a front-mounted gear-shifting reversing device as shown in fig. 1 and 2 comprises a box body 1, a box cover 2 arranged at an opening of the box body 1, a second shaft 3 pivoted on the box cover 2, a first shaft 5 pivoted on the box body 1, a sliding sleeve 9, a shifting fork 10 acting on the sliding sleeve 9 and a gear-shifting mechanism 11 driving the shifting fork 10 to move, wherein the box body 1 is fixedly connected with a clutch shell of a gearbox through a plurality of bolts, the plurality of bolts respectively penetrate through corresponding bolt fixing connecting holes 204 on the box cover 2 and are fixedly connected with a box body of a main gearbox of an automobile, the first shaft 5 is connected with an output side of an engine, an external spline at the rear end of the second shaft 3 is meshed with an inner gear ring of an input gear of the main gearbox of the automobile, an external gear ring at the front end of the second shaft 3 is meshed with the inner gear ring of the sliding sleeve 9, an external gear ring of the, the inner gear ring of the front gear 6 and the inner gear ring of the rear gear 4 sleeved on the second shaft 3 can be meshed with the outer gear ring of the sliding sleeve 9, the outer gear ring of the front gear 6 is meshed with the two first gears 71 of the two sets of transition gear sets 7 positioned in the box body 1, the two second gears 72 of the two sets of transition gear sets 7 are respectively meshed with the outer teeth of the corresponding idler gears 8 positioned in the box body 1, the first gear 71 and the second gear 72 in the same set are coaxially arranged, and the outer teeth of the idler gears 8 are meshed with the outer teeth of the rear gear 4, wherein the device further comprises two idler shafts 12 with one ends arranged on the box cover 2, the idler gears 8 are arranged on the corresponding idler shafts 12, a gap is reserved between the inner end surface of the idler shaft 12 and the inner end surface of the first gear 71 close to the side of the idler gears 8, and interference between the first gear 71 and the idler shafts 12 cannot occur, therefore, the corresponding first gear 71 and the front gear 6 can be replaced according to actual requirements to change the transmission ratio, wherein the box body 1 and the box cover 2 are made of QT500-7 nodular cast iron, the strength is enhanced, the gear shifting mechanism 11 is a pneumatic control operating valve, the gear shifting is stable, the access mode is simple, the damage of impact force to the gears can be reduced, and the gear shifting can be well carried out by utilizing an air source of an original vehicle.
The displacement difference between the two groups of transition gear sets 7 and the displacement difference between the two idle gears 8 are both 180 degrees, so that the stress of the rear gear 4 and the front gear 6 is balanced, the bending deformation of the second shaft 3 and the first shaft 5 after long-time use is avoided, the work is stable, and the service life is long.
The idler shaft 12 is fixedly arranged on the box cover 2, the idler wheels 8 are arranged on the corresponding idler shafts 12 through bearings, and the locking nuts 14 connected to the ends of the idler shafts 12 limit the bearings on the idler shafts 12, so that the idler wheels 8 are reliably arranged and the interference between the idler shafts 12 and the first gear 71 is avoided.
This application still includes two gear train axles 13, the bearing installation that corresponds respectively at the both ends of gear train axle 13 is located in the mounting hole of the correspondence on the box 1 with be located in the mounting hole of the correspondence on case lid 2, transition gear train 7 is installed on the gear train axle 13 that corresponds.
As shown in fig. 3, the inner side surface of the case cover 2 has two circular bosses 201, the inner cavities of the circular bosses 201 and the corresponding mounting holes on the case cover 2 are penetrated to form bearing holes, the arrangement of the circular ring boss 201 can greatly reduce the weight of the blank of the case cover 2 while ensuring the strength of the bearing mounting position, and can save energy because the thickness of the case cover 2 is reduced, wherein, a plurality of semi-circular notches 202 extending along the axial direction and a plurality of rib plates 206 are uniformly distributed on the outer side surface of the circular boss 201 in a circular shape, the rib plates 206 and the semicircular notches 202 are arranged at intervals, the semicircular notches 202 and the corresponding bolt fixing connection holes 204 on the box cover 2 are coaxially arranged, and the rigidity of the circular boss 201 can be improved by the plurality of rib plates 206 and the bolt heads in the corresponding semicircular notches 202, so that the structure is stable.
The inner side surface of the box cover 2 is provided with two support tables 205, the fixed end of the idler shaft 12 is arranged on the corresponding support table 205, so that the cantilever length of the idler shaft 12 can be shortened, the idler shaft 12 is high in rigidity, and the running is stable, and the support table 205 is positioned on the box cover 2, so that the first gear 71 and the support tables 205 cannot interfere with each other, and the change of the transmission ratio can be realized by replacing the corresponding first gear 71 and the front gear 6 according to actual requirements.
The case lid 2 is last to have a plurality of and to follow the through-hole 203 that the axis ring of second shaft 3 distributes, through-hole 203 and the mounting hole intercommunication that is located the correspondence on the main reducing gear box of car, when this application and the rigidity of being connected of car main reducing gear box are not enough, through-hole 203 uses as the fixed orifices, when this application and the rigidity of being connected of car main reducing gear box are enough, through-hole 203 uses as the lubrication hole, selects according to actual conditions, convenient to use.
When the bicycle advances, the shifting fork 10 drives the sliding sleeve 9 to move, so that the sliding sleeve 9 is meshed with the front gear 6, the first shaft 5 drives the front gear 6 to rotate, the front gear 6 drives the sliding sleeve 9 to rotate, and the sliding sleeve 9 drives the second shaft 3 to rotate; during reverse gear, the shifting fork 10 drives the sliding sleeve 9 to move so that the sliding sleeve 9 is separated from the front gear 6, the sliding sleeve 9 is meshed with the rear gear 4, the first shaft 5 drives the front gear 6 to rotate, the front gear 6 is meshed with the first gear 71 to further drive the second gear 72 to rotate, the second gear 72 drives the idle gear 8 to rotate, the idle gear 8 drives the rear gear 4 to rotate, the rear gear 4 drives the second shaft 3 to rotate through the sliding sleeve 9, the external splines at the rear end of the second shaft 3 are meshed with the internal teeth of the input gear of the automobile main reduction gearbox, and therefore all gears of the automobile main reduction gearbox are changed into reverse gears.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A front-mounted variable-speed reversing device comprises a box body (1), a box cover (2) arranged at an opening of the box body (1), a second shaft (3) pivoted on the box cover (2), a first shaft (5) pivoted on the box body (1), a sliding sleeve (9), a shifting fork (10) acting on the sliding sleeve (9) and a gear shifting mechanism (11) driving the shifting fork (10) to move, wherein an outer gear ring of the second shaft (3) is meshed with an inner gear ring of the sliding sleeve (9), an outer gear ring of the first shaft (5) is meshed with an inner gear ring of a front gear (6), the inner gear ring of the front gear (6) and the inner gear ring of a rear gear (4) sleeved on the second shaft (3) can be meshed with the outer gear ring of the sliding sleeve (9), and the outer gear ring of the front gear (6) is meshed with two first gears (71) of two sets of transition gear sets (7) positioned in the box body (1), two second gears (72) of two groups of transition gear sets (7) are respectively meshed with outer teeth of corresponding idler gears (8) in the box body (1), the first gears (71) and the second gears (72) of the same group are coaxially arranged, and the outer teeth of the idler gears (8) are meshed with outer teeth of the rear gears (4), the gearbox is characterized by further comprising two idler shafts (12) with one ends arranged on the box cover (2), the idler gears (8) are installed on the corresponding idler shafts (12), and gaps are reserved between inner end faces of the idler shafts (12) and inner end faces of the first gears (71).
2. The front-end reversing device according to claim 1, characterized in that the idler shaft (12) is fixedly arranged on the cover (2), the idler (8) is mounted on the corresponding idler shaft (12) by means of a bearing, and a locking nut (14) connected to the end of the idler shaft (12) confines the bearing on the idler shaft (12).
3. The front-mounted variable-speed reversing device according to claim 1, further comprising two gear set shafts (13), wherein two ends of each gear set shaft (13) are respectively mounted in corresponding mounting holes on the box body (1) and corresponding mounting holes on the box cover (2) through corresponding bearings, and the transition gear set (7) is mounted on the corresponding gear set shaft (13).
4. The front variable-speed reversing device according to claim 1, wherein two circular bosses (201) are arranged on the inner side surface of the case cover (2), inner cavities of the circular bosses (201) are communicated with corresponding mounting holes on the case cover (2) to form bearing holes, wherein a plurality of semicircular notches (202) extending along the axial direction are uniformly distributed on the outer side surface of the circular bosses (201) in a circular manner, and the semicircular notches (202) are coaxially arranged with corresponding bolt fixing connecting holes (204) on the case cover (2).
5. The front derailleur according to claim 4, characterized in that said cover (2) has two support platforms (205) on its inner side, the fixed end of said idler shaft (12) being arranged on the corresponding support platform (205).
6. The front variable-speed reversing device according to claim 4, characterized in that a plurality of rib plates (206) are arranged on the outer side surface of the circular boss (201), and the rib plates (206) and the semicircular notches (202) are arranged at intervals.
7. The front-mounted gear shifting and reversing device according to claim 1, characterized in that the box cover (2) is provided with a plurality of through holes (203) which are annularly distributed along the axis of the second shaft (3), the through holes (203) are communicated with corresponding mounting holes on a main reduction gearbox of an automobile, and the through holes (203) can be used as fixing holes or lubricating holes.
8. A front-end gear change as claimed in claim 1, characterized in that the difference in displacement between the two sets of transition gear sets (7) and the difference in displacement between the two idler gears (8) is 180 °.
9. A front-mounted gear-change reversing device according to claim 1, characterized in that the shifting mechanism (11) is a pneumatically operated valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021619900.1U CN213541201U (en) | 2020-08-06 | 2020-08-06 | Front-mounted variable-speed reversing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021619900.1U CN213541201U (en) | 2020-08-06 | 2020-08-06 | Front-mounted variable-speed reversing device |
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| Publication Number | Publication Date |
|---|---|
| CN213541201U true CN213541201U (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021619900.1U Active CN213541201U (en) | 2020-08-06 | 2020-08-06 | Front-mounted variable-speed reversing device |
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| CN (1) | CN213541201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606318A (en) * | 2021-07-01 | 2021-11-05 | 王信辉 | Homodromous high moment of torsion gear box |
-
2020
- 2020-08-06 CN CN202021619900.1U patent/CN213541201U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606318A (en) * | 2021-07-01 | 2021-11-05 | 王信辉 | Homodromous high moment of torsion gear box |
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Effective date of registration: 20230913 Address after: 450000, Floor 8, Row 6, Taixiang Auto Trade Park, Dazhuang Village, Zheng'an Town, Zhongmou County, Zhengzhou City, Henan Province Patentee after: Zhengzhou Hanbang Automotive Parts Co.,Ltd. Address before: 450000 No.116, building 6, No.66 courtyard, Tongtai Road, Jinshui District, Zhengzhou City, Henan Province Patentee before: Wang Yanqi |