CN111497605A - Bidirectional walking power assembly with chain pressing mechanism - Google Patents
Bidirectional walking power assembly with chain pressing mechanism Download PDFInfo
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- CN111497605A CN111497605A CN202010440548.3A CN202010440548A CN111497605A CN 111497605 A CN111497605 A CN 111497605A CN 202010440548 A CN202010440548 A CN 202010440548A CN 111497605 A CN111497605 A CN 111497605A
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- 238000003825 pressing Methods 0.000 title claims abstract description 44
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 43
- 230000007246 mechanism Effects 0.000 title claims abstract description 40
- 210000004907 gland Anatomy 0.000 claims description 47
- 238000007789 sealing Methods 0.000 claims description 26
- 238000007790 scraping Methods 0.000 claims description 16
- 239000004519 grease Substances 0.000 claims description 11
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 10
- 230000006872 improvement Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H57/022—Adjustment of gear shafts or bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
- F16H2057/125—Adjustment of backlash during mounting or assembly of gearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses a bidirectional walking power assembly with a chain pressing mechanism, which comprises a bidirectional output gear box and the chain pressing mechanism, wherein the bidirectional output gear box comprises a power source, a power output shaft, an assembled gear box, a sub-roadway driving sprocket, a driving spiral bevel gear, a turning spiral bevel gear and a main roadway driving sprocket. The chain pressing mechanism comprises a pressing chain wheel, a rotating arm support and a push-pull swing arm, wherein the pressing chain wheel is matched with the chain. The bidirectional output gearbox has the advantages that the overall size is compact, and the installation requirement of a four-way vehicle and small space in a vehicle body is met. The chain pressing mechanism is compact in overall structure, simple in structure and high in reliability, and when the power input shaft of the main roadway travelling wheel rises or falls under the driving of the lifting mechanism, the rotating arm swings around the middle hinge point, so that the left end and the right end of the rotating arm alternately rise or fall; when the power input shaft of the driving wheel of the main roadway rises, the right end of the rotating arm descends to press the chain downwards to tighten the chain.
Description
Technical Field
The invention relates to a bidirectional walking power assembly with a chain pressing mechanism.
Background
With the continuous development of the warehousing industry, a four-way vehicle is provided, and the power of the four-way vehicle is provided by a bidirectional output gearbox output by a motor. At present, the reducer with the bidirectional output gear box, which can meet the requirements of power speed ratio and the like, is too large in size and cannot be used in an intelligent four-way vehicle.
When the existing bidirectional output gearbox provides power for a four-way vehicle, because a power input shaft of a lifting wheel of the four-way vehicle can ascend and descend, a chain between a driving chain wheel on the power input shaft of the lifting wheel and a power chain wheel providing power for the bidirectional output gearbox can be loosened, the chain can possibly slide down due to the loosening of the chain, and the four-way vehicle cannot drive.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the speed reducer with the bidirectional output gear box, which can meet the requirements of power speed ratio and the like, is too bulky to be used in an intelligent four-way vehicle, and meanwhile, in the existing bidirectional output gear box, chain looseness between a main roadway driving chain wheel and a main roadway driven chain wheel can cause chain slipping, so that the four-way vehicle cannot drive.
The invention provides a compact bidirectional walking power assembly with a chain pressing mechanism, which adopts the technical scheme that:
a bidirectional walking power assembly with a chain pressing mechanism comprises a bidirectional output gear box and the chain pressing mechanism,
the bidirectional output gearbox comprises a power source, a power output shaft, an assembled gearbox, a sub-roadway driving sprocket, a driving spiral bevel gear, a turning spiral bevel gear and a main roadway driving sprocket,
the assembled gear box is positioned at the output end of the power source and is connected with the shell of the power source, the output shaft of the power source is positioned inside the assembled gear box, the driving chain wheel of the sub-roadway and the driving spiral bevel gear are coaxially arranged on the output shaft of the power source, and the driving spiral bevel gear is positioned at the shaft end of the output shaft of the power source; the direction-changing spiral bevel gear is meshed with the driving spiral bevel gear, the direction-changing spiral bevel gear is arranged on the power output shaft, two ends of the power output shaft are supported on the assembled gear box through thrust roller bearings, and two ends of the power output shaft extend out of the assembled gear box;
defining two ends of a power output shaft as a front end and a rear end respectively, wherein a turning spiral bevel gear is positioned at the rear end of the power output shaft, a driven gear space ring is arranged between the turning spiral bevel gear and a thrust roller bearing, a first O-shaped sealing ring is arranged at the joint of the turning spiral bevel gear and the driven gear space ring, the first O-shaped sealing ring is positioned at the joint of the turning spiral bevel gear and the driven gear space ring through a rear gland oil seal seat, and the rear gland oil seal seat is fixed on the assembled gearbox and positioned inside the assembled gearbox; the rear bearing is arranged at the shaft end part at the rear end of the power output shaft and is positioned outside the assembled gear box, the rear bearing is fixed through a rear bearing adjusting gland, the rear bearing adjusting gland is arranged on the outer box wall of the assembled gear box, a first bearing cavity for installing the rear bearing is arranged on the rear bearing adjusting gland, a second O-shaped sealing ring is arranged in the first bearing cavity, the second O-shaped sealing ring is in small clearance fit with the surface of the outer ring of the rear bearing, and the rear bearing is in interference fit with the power output shaft;
the main roadway driving chain wheel is arranged on the power output shaft and is positioned at the front end of the power output shaft, the main roadway driving chain wheel is positioned outside the assembled gear box, and a power shaft gland is arranged at the end part of the front end of the power output shaft; a front bearing is arranged on the power output shaft, the front bearing is positioned outside the assembled gear box, and a driving sprocket space ring is sleeved on the power output shaft between the front bearing and the thrust roller bearing; the front bearing is fixed through a front bearing adjusting gland, the front bearing adjusting gland is arranged on the outer box wall of the assembled gear box, a second bearing cavity used for installing the front bearing is arranged on the front bearing adjusting gland, a third O-shaped sealing ring is arranged in the second bearing cavity, the third O-shaped sealing ring is in small clearance fit with the surface of the outer ring of the front bearing, and the front bearing is in interference fit with the power output shaft; a front gland oil seal seat is arranged at the front end of the power output shaft corresponding to the thrust roller bearing, the front gland oil seal seat is arranged on the inner box wall of the split mounting type gear box, and a fourth O-shaped sealing ring is arranged between the front gland oil seal seat and the power output shaft.
The chain pressing mechanism comprises a pressing chain wheel matched with the chain, a rotating arm bracket and a push-pull swinging arm,
the push-pull swing arm comprises a swing arm sleeve and a swing arm, and the swing arm is vertically arranged on the outer cylinder wall of the swing arm sleeve; the swing arm sleeve is rotatably arranged on the power input shaft of the main roadway road wheel, the free end of the swing arm is hinged with the rotating arm,
the rotating arm body is provided with three connecting points which are respectively a left end hinge point, a right end connecting point and a middle hinge point positioned between the left end hinge point and the right end connecting point, and rotating shafts of the left end hinge point, the right end connecting point and the middle hinge point are parallel; the left end hinge point is connected with the free end of the swing arm, and the middle hinge point is connected with the rotating arm bracket;
the rotating arm support is vertically arranged and is positioned between the power input shaft of the main roadway traveling wheel and the bidirectional output gearbox, and the bottom of the rotating arm support is fixed; the top of the rotating arm support extends upwards to form a boss seat, and the boss seat is connected with a hinge point in the middle of the rotating arm; a guide groove is vertically formed in the surface of the rotating arm support body, the groove width of the guide groove is equal to the width of the swing arm sleeve, and the guide groove is clamped on the end surfaces of two sides of the swing arm sleeve;
the compression chain wheel rotates and is arranged on the chain wheel shaft, the compression chain wheel is positioned right above the chain between the main roadway driving chain wheel and the main roadway driven chain wheel, one end part of the chain wheel shaft is in threaded connection with a right end connection point of the rotating arm support, and the right end of the rotating arm support is provided with a locking pin for preventing the chain wheel shaft from loosening.
The technical scheme of the invention adopts the split mounting type gear box, thus solving the technical problem of difficult assembly of the whole gear box; two thrust roller bearings are adopted on the power output shaft to bear working force, radial bearings at two ends of the power output shaft can play a role, and even if the power output shaft has a gap due to the fact that the two thrust roller bearings bear the working force, the axial precision of the power output shaft can be guaranteed to be unchanged.
In the technical scheme of the invention, the chain pressing mechanism has compact integral structure, simple structure and high reliability, and the power input shaft of the driving wheels of the main roadway rises or falls under the driving of the lifting mechanism, and simultaneously the rotating arm swings around the middle hinge point to enable the left end and the right end of the rotating arm to rise or fall alternately; when the power input shaft of the driving wheel of the main roadway rises, the right end of the rotating arm descends to press the chain downwards to tighten the chain.
The invention improves the technical scheme that the bidirectional walking power assembly with the chain pressing mechanism further comprises an oil scraping plate, the oil scraping plate is sleeved on an output shaft of the power source, and the oil scraping plate is clamped between the driving chain wheel of the sub-roadway and the driving spiral bevel gear to block grease thrown out by the driving spiral bevel gear.
The invention improves the technical scheme that the bidirectional walking power assembly with the chain pressing mechanism also comprises an oil collecting tank, wherein the oil collecting tank is positioned below the oil scraping plate and is used for collecting grease blocked by the oil scraping plate; the oil collecting tank has two high ends and one low middle part, and the middle part of the oil collecting tank is communicated with the assembled gear box for collecting grease to be fed into the assembled gear box.
The split mounting type gearbox comprises a bottom plate, an end cover plate, a front gearbox cover plate and a rear gearbox cover plate, wherein the front gearbox cover plate and the rear gearbox cover plate are arranged in parallel, one end of each of the front gearbox cover plate and the rear gearbox cover plate is connected with a power source shell, the other end of each of the front gearbox cover plate and the rear gearbox cover plate is respectively connected with two ends of the end cover plate, and the bottom plate, the end cover plate, the front gearbox cover plate, the rear gearbox cover plate and the power source shell form the gearbox in a surrounding manner; the front end and the rear end of the power output shaft are respectively supported on the front gear box cover plate and the rear gear box cover plate through thrust roller bearings. According to the assembled gear box, the bottom plate, the end cover plate, the front gear box cover plate and the rear gear box cover plate are assembled through the tenons and the positioning pins, so that the size is compact, and the installation requirement of a four-way vehicle and small space in a vehicle body is met; meanwhile, the structure of the split mounting type gear box is convenient for adjusting the meshing clearance of the gears during installation and the clearance between the two thrust roller bearings on the power output shaft.
The technical scheme of the invention is improved, the oil collecting tank is arranged on the bottom plate of the assembled gear box, and one end of the oil collecting tank extends out of the front gear box cover plate.
In the improvement of the technical scheme of the invention, the rear bearing is a deep groove ball bearing 6803, and the front bearing is a deep groove ball bearing 6804. The rear bearing and the front bearing adopt deep groove ball bearings, and the axial precision of the power output shaft is guaranteed to be unchanged. Meanwhile, the deep groove ball bearing 6803 and the deep groove ball bearing 6804 which are provided with oil sealing covers are arranged on a power output shaft, so that the deep groove ball bearing 6803 and the deep groove ball bearing 6804 not only play a role in guiding the shaft, but also play a role in preventing oil sealing covers on thrust roller bearings at two ends of the shaft from leaking; two functions are integrated. Further, a deep groove ball bearing 6803 and a deep groove ball bearing 6804 are adopted, and oil seals are prevented from being additionally arranged on the rear bearing adjusting pressing cover and the front bearing adjusting pressing cover.
The improvement of the technical proposal of the invention is that the power source consists of a motor and a speed reducer.
The technical scheme of the invention is improved, the swing arm sleeve is rotatably connected with the main roadway traveling wheel power input shaft through a bearing, the bearing is arranged in a bearing cavity on the swing arm sleeve, and the outer ring of the bearing is limited by two retainer rings.
According to the improvement of the technical scheme, the rotating arm is U-shaped, and the free end of the swing arm and the boss seat at the top of the rotating arm support are inserted into the clamping groove of the U-shaped rotating arm.
The improvement of the technical scheme of the invention is that the guide groove is in clearance fit with the end surfaces of the two sides of the swing arm sleeve. The clearance fit is convenient for the push-pull swing arm to move, and the guide groove only plays a role in guiding.
Compared with the prior art, the invention has the beneficial effects that:
1. the bidirectional output gearbox has compact integral volume, and meets the installation requirements of a four-way vehicle and small space in the vehicle body.
2. In the bidirectional output gearbox, two thrust roller bearings are adopted to bear working force, and two radial bearings ensure that the axial precision of the power output shaft is unchanged.
3. The structure of the bidirectional output gear box and the split mounting type gear box is convenient for adjusting the meshing clearance of the gears and the clearance between two thrust roller bearings on the power output shaft during installation.
4. The chain pressing mechanism is compact in structure, and meets the installation requirements of a four-way vehicle and small space in a vehicle body.
5. The chain pressing mechanism is simple in structure and high in reliability, and the power input shaft of the main roadway driving wheel rises or falls under the driving of the lifting mechanism, and meanwhile, the rotating arm swings around the middle hinge point, so that the left end and the right end of the rotating arm alternately rise or fall; when the power input shaft of the driving wheel of the main roadway rises, the right end of the rotating arm descends to press the chain downwards to tighten the chain.
Drawings
Fig. 1 is a schematic perspective view of the present embodiment (the oil sump of the chain and the bidirectional output gearbox is not shown in the figure).
Fig. 2 is a schematic perspective view of the bidirectional output gearbox of the present embodiment (the oil sump is not shown in the figure).
Fig. 3 is a cross-sectional view of fig. 2.
Fig. 4 is a schematic structural view of the rear bearing adjusting gland.
Fig. 5 is a schematic perspective view of the chain pressing mechanism of the present embodiment.
Fig. 6 is a schematic view of a swivel arm.
Fig. 7 is a schematic view of a swivel arm support.
In the figure, 1-main roadway driving sprocket, 2-sub roadway driving sprocket, 3-driving spiral bevel gear, 3A-deflecting spiral bevel gear, 3B-oil scraping plate, 4-power output shaft, 5-end cover plate, 6-driven gear spacer, 7-rear bearing adjusting gland, 7A-rear gland oil seal seat, 8A-front gland oil seal seat, 9-rear gear box cover plate, 10-front gear box cover plate, 10A-oil collecting tank, 15-front bearing, 17, third O-shaped seal ring, 18, fourth O-shaped seal ring, 19, rear bearing, 20-second O-shaped seal ring, 21-first O-shaped seal ring, 22-power source, 23, pressing sprocket, 24, rotating arm, 24-1, clamping groove, 24-2 and left end hinge point, 24-3 parts of a right end connecting point, 24-4 parts of a middle hinged point, 25 parts of a rotating arm support, 25-1 parts of a boss base, 25-2 parts of a guide groove, 25-3 parts of an arc-shaped surface, 26 parts of a push-pull swing arm, 26-1 parts of a swing arm sleeve, 26-2 parts of a swing arm, 27 parts of a main roadway driving wheel power input shaft, 28 parts of a chain wheel shaft, 29 parts of a main roadway driven chain wheel, 30 parts of a base plate, 31 parts of a vertical plate.
Detailed Description
The technical solution of the present invention is described in detail below, but the scope of the present invention is not limited to the embodiments.
In order to make the disclosure of the present invention more comprehensible, the following description is further made in conjunction with fig. 1 to 7 and the detailed description.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example (b):
as shown in fig. 1, the bidirectional traveling power assembly with the chain pressing mechanism in the present embodiment includes a bidirectional output gear box and a chain pressing mechanism.
In this embodiment, the four-way vehicle is a known technology, and the main roadway traveling wheel is taken as an example of the lifting wheel, so as to further explain the technical scheme.
As shown in fig. 2, the bidirectional output gearbox in this embodiment includes a power source 22, a power output shaft 4, a split type gearbox, a sub-tunnel drive sprocket 2, a drive spiral bevel gear 3, a direction-changing spiral bevel gear 3A, and a main tunnel drive sprocket 1.
In this embodiment, the main tunnel driving sprocket 1 and the sub tunnel driving sprocket 2 respectively send power to the road wheels of the four-way vehicle through chains.
As shown in fig. 2 and 3, the split-type gearbox is located at the output end of the power source 22 and is connected to the housing of the power source 22. The power source 22 is composed of a motor and a speed reducer.
An output shaft of the power source 22 is positioned inside the assembled gear box, the sub-roadway driving sprocket 2 and the driving spiral bevel gear 3 are coaxially arranged on the output shaft of the power source 22, and the driving spiral bevel gear 3 is positioned at the shaft end of the output shaft of the power source 22; the turning spiral bevel gear 3A is meshed with the driving spiral bevel gear 3, the turning spiral bevel gear 3A is arranged on the power output shaft 4, two ends of the power output shaft 4 are supported on the assembled gear box through thrust roller bearings, and two ends of the power output shaft 4 extend out of the assembled gear box. In this embodiment, the power output shaft 4 uses two thrust roller bearings to bear the working force.
As shown in fig. 2 and 3, in this embodiment, the assembled gearbox includes a bottom plate, an end cover plate 5, a front gearbox cover plate 10 and a rear gearbox cover plate 9, the front gearbox cover plate 10 and the rear gearbox cover plate 9 are arranged in parallel, one end of each of the front gearbox cover plate 10 and the rear gearbox cover plate 9 is connected to the casing of the power source 22, the other end of each of the front gearbox cover plate 10 and the rear gearbox cover plate 9 is connected to two ends of the end cover plate 5, and the bottom plate, the end cover plate 5, the front gearbox cover plate 10, the rear gearbox cover plate 9 and the casing of the power source 22 enclose the gearbox; the front end and the rear end of the power output shaft 4 are respectively supported on a front gearbox cover plate 10 and a rear gearbox cover plate 9 through thrust roller bearings.
As shown in fig. 2, the assembled gear box of the embodiment is formed by assembling a bottom plate, an end cover plate, a front gear box cover plate and a rear gear box cover plate through tenons and positioning pins, so that the assembled gear box is compact in size, meets the installation requirements of a four-way vehicle and is small in space in a vehicle body; meanwhile, the structure of the split mounting type gear box is convenient for adjusting the meshing clearance of the gears during installation and the clearance between the two thrust roller bearings on the power output shaft.
The assembled gearbox is installed in a four-way vehicle, and the bottom plate can be replaced by the bottom plate of the four-way vehicle.
Compared with the existing bidirectional output gearbox, the split mounting type gearbox has low production cost. Because the existing bidirectional output gearbox adopts an integral structure, the gearbox body is usually required to be manufactured with a mould and then cast; this die casting process is costly. The split mounting type gearbox in the application is composed of a bottom plate, an end cover plate 5, a front gearbox cover plate 10 and a rear gearbox cover plate 9, mold casting is not needed, the process is simple, the cost is low, and the split mounting type gearbox is economically very cost-effective.
As shown in fig. 2 and 3, it is defined that two ends of the power output shaft 4 are a front end and a rear end respectively, the turning spiral bevel gear 3A is located at the rear end of the power output shaft 4, the driven gear spacer 6 is arranged between the turning spiral bevel gear 3A and the thrust roller bearing, a first O-shaped sealing ring 21 is arranged at a joint of the turning spiral bevel gear 3A and the driven gear spacer 6, the first O-shaped sealing ring 21 is positioned at a joint of the turning spiral bevel gear 3A and the driven gear spacer 6 through a rear gland oil seal seat 7A, and the rear gland oil seal seat 7A is fixed on the assembled type gear box and located inside the assembled type gear box.
As shown in fig. 3, the rear gland oil seal seat 7A is annular, and the rear gland oil seal seat 7A is fixed on the inner side of the rear gearbox cover 9 of the split type gearbox through bolts; the inner ring surface of the rear gland oil seal seat 7A contacts with a first O-shaped seal ring 21, the first O-shaped seal ring 21 is positioned at the joint of the turning spiral bevel gear 3A and the driven gear spacer ring 6, and the first O-shaped seal ring 21 is arranged to seal grease of a thrust roller bearing at the rear end of the power output shaft 4.
As shown in fig. 3, a rear bearing 19 is arranged at the shaft end part of the rear end of the power output shaft 4, and the rear bearing 19 adopts a deep groove ball bearing 6803, so that the axial precision of the power output shaft is ensured to be unchanged and not bear force.
As shown in fig. 3 and 4, the rear bearing 19 is located outside the assembled gear box, the rear bearing 19 is fixed by the rear bearing adjusting gland 7, the rear bearing adjusting gland 7 is arranged on the outer box wall of the assembled gear box, a first bearing cavity for installing the rear bearing 19 is arranged on the rear bearing adjusting gland 7, a second O-shaped sealing ring 20 is arranged in the first bearing cavity, the second O-shaped sealing ring 20 is in small clearance fit with the outer ring surface of the rear bearing 19, and the rear bearing 19 is in interference fit with the power output shaft 4. A small clearance fit between the rear bearing 19 and the second O-ring 20 is provided to facilitate removal of the rear bearing adjustment gland 7.
As shown in fig. 3, the main tunnel drive sprocket 1 is arranged on the power output shaft 4 and located at the front end of the power output shaft 4, the main tunnel drive sprocket 1 is located outside the split type gear box, the end part of the front end of the power output shaft 4 is provided with a power shaft gland 14, and the power shaft gland 14 is fixed at the end part of the front end of the power output shaft 4 through an axial bolt, so that the axial position of the main tunnel drive sprocket 1 is limited.
The front bearing 15 is arranged on the power output shaft 4, and the front bearing 15 adopts a deep groove ball bearing 6804, so that the axial precision of the power output shaft is ensured to be unchanged and not bear force.
As shown in fig. 3 and 4, the front bearing 15 is located outside the split type gear box, and the driving sprocket space ring 11 is sleeved on the power output shaft 4 between the front bearing 15 and the thrust roller bearing; the front bearing 15 is fixed through a front bearing adjusting gland 8, the front bearing adjusting gland 8 is fixed on the outer wall of a front gear box cover plate 10 of the split mounting type gear box through bolts, a second bearing cavity used for installing the front bearing 15 is formed in the front bearing adjusting gland 8, a third O-shaped sealing ring 17 is arranged in the second bearing cavity, and an annular groove for installing the third O-shaped sealing ring 17 is formed in the second bearing cavity. The third O-shaped sealing ring 17 is in small clearance fit with the surface of the outer ring of the front bearing 15, and the front bearing 15 is in interference fit with the power output shaft 4; a front gland oil seal seat 8A is arranged at the front end of the power output shaft 4 corresponding to the thrust roller bearing, the front gland oil seal seat 8A is arranged on the inner box wall of the split type gear box, and a fourth O-shaped sealing ring 18 is arranged between the front gland oil seal seat 8A and the power output shaft 4. The fourth O-ring 18 and the third O-ring 17 seal grease of the thrust roller bearing at the tip of the power output shaft 4.
As shown in FIG. 3, the structure of the split mounting type gear box of the embodiment is convenient for adjusting the meshing clearance of the gears and the clearance between the two thrust roller bearings on the power output shaft during installation. In the installation and debugging process, the power output shaft 4, the turning spiral bevel gear 3A installed on the power output shaft 4 and the two thrust roller bearings can be conveniently taken out one by one only by disassembling the rear gear box cover plate 9 of the split mounting type gear box. The second O-shaped sealing ring 20 and the third O-shaped sealing ring 17 are extruded, so that the adjustment of the gap between the rear bearing adjusting gland 7 and the front bearing adjusting gland 8 is facilitated during assembly, and the outer rings of the rear bearing 19 and the front bearing 15 are prevented from rotating.
As shown in fig. 3, in this embodiment, the bidirectional traveling power assembly with the chain pressing mechanism further includes an oil scraping plate 3B and an oil collecting tank 10A, the oil scraping plate 3B is sleeved on the output shaft of the power source 22, and the oil scraping plate 3B is clamped between the sub-tunnel driving sprocket 2 and the driving spiral bevel gear 3 to block grease thrown off by the driving spiral bevel gear 3. The oil collecting groove 10A is positioned below the oil scraping plate 3B and is used for collecting grease blocked by the oil scraping plate 3B; the oil collecting groove 10A is high at two ends and low in the middle, and the middle of the oil collecting groove 10A is communicated with the assembled gear box and used for conveying collected grease into the assembled gear box. The oil collecting tank 10A is placed on a bottom plate of the split mounting type gear box, and one end of the oil collecting tank 10A extends out of the front gear box cover plate 10.
The main roadway road wheel power input shaft 27 mentioned in the present embodiment is opposite to the lifting wheel power input shaft mentioned in the background art, and the main roadway driving sprocket 1 and the main roadway driven sprocket 29 are respectively opposite to the power sprocket and the driving sprocket mentioned in the background art. In the present embodiment, the chain concerned is a chain passing around the main lane drive sprocket 1 and the main lane driven sprocket 29. Since the main roadway road wheel needs to rise when the four-way vehicle travels in a reversing way, the power input shaft 27 of the main roadway road wheel rises under the action of the lifting mechanism, and a chain which bypasses the main roadway driving chain wheel 1 and the main roadway driven chain wheel 29 is loosened.
The lifting mechanism of the power input shaft 27 of the main road wheel is known in the technical field of four-way vehicles, and the embodiment will not be described in detail.
As shown in fig. 5, the chain pressing mechanism in this embodiment includes a pressing sprocket 23 engaged with the chain, a rotating arm 24, a rotating arm bracket 25, and a push-pull swing arm 26.
As shown in fig. 1, the bidirectional output gearbox and the chain pressing mechanism are both disposed on a base plate 30, and a vertical plate 31 for supporting the power input shaft 27 of the main roadway road wheel is also shown. It should be noted that the base plate 30 and the vertical plate 31 are not required in practical applications, and fig. 1 is for clearly reflecting the structural integrity.
As shown in FIG. 5, the push-pull swing arm 26 comprises a swing arm sleeve 26-1 and a swing arm 26-2, wherein the swing arm 26-2 is vertically arranged on the outer cylinder wall of the swing arm sleeve 26-1; the swing arm sleeve 26-1 is rotatably arranged on a power input shaft 27 of the main roadway road wheel, and the free end of the swing arm 26-2 is hinged with the rotating arm 24.
The swing arm sleeve 26-1 is rotatably connected with the power input shaft of the main roadway traveling wheel through a bearing, the bearing is arranged in a bearing cavity on the swing arm sleeve 26-1, and the outer ring of the bearing is limited through two retaining rings.
As shown in fig. 6, the body of the rotating arm 24 is provided with three connecting points, namely a left end hinge point 24-2 and a right end connecting point 24-3, and a middle hinge point 24-4 located between the left end hinge point 24-2 and the right end connecting point 24-3, wherein the rotating shafts of the left end hinge point 24-2, the right end connecting point 24-3 and the middle hinge point 24-4 are parallel; the left end hinge point 24-2 is connected with the free end of the swing arm 26-2, and the middle hinge point 24-4 is connected with the rotating arm bracket 25.
The rotating arm 24 is U-shaped, and the free end of the swing arm 26-2 and the boss seat 25-1 at the top of the rotating arm bracket 25 are inserted into the clamping groove 24-1 of the U-shaped rotating arm 24.
As shown in fig. 7, the rotating arm support 25 is vertically arranged, the rotating arm support 25 is positioned between the power input shaft 27 of the main roadway road wheel and the bidirectional output gearbox, and the bottom of the rotating arm support 25 is fixed; the top of the rotating arm bracket 25 extends upwards to form a boss seat 25-1, and the boss seat 25-1 is connected with a middle hinge point 24-4 of the rotating arm 24; a guide groove 25-2 is vertically formed in the surface of the rotating arm support 25, the width of the guide groove 25-2 is equal to that of the swing arm sleeve 26-1, and the guide groove 25-2 is clamped with the end faces of two sides of the swing arm sleeve 26-1.
As shown in FIG. 5, the guide slot 25-2 is in clearance fit with the end surfaces of the swing arm sleeve 26-1 at both sides. The clearance fit facilitates the movement of the push-pull swing arm 26, and the guide groove 25-2 only plays a role of guiding.
As shown in fig. 5, the convex pedestal 25-1 at the top of the rotating arm support 25 has an arc-shaped surface pointing to the push-pull swing arm 26, so as to avoid interference between the swing arm 26-2 of the push-pull swing arm 26 and the rotating arm support 25.
As shown in fig. 5, the hold-down chain wheel 23 is rotatably arranged on the chain wheel shaft 28, the hold-down chain wheel 23 is positioned right above the chain between the main roadway driving chain wheel 1 and the main roadway driven chain wheel 29, the main roadway driving chain wheel 1 is arranged on the bidirectional output gear box, and the main roadway driven chain wheel 29 is arranged on the main roadway driving wheel power input shaft 27; one end of the chain wheel shaft 28 is screwed on the right end connecting point 24-3 of the rotating arm bracket 25, and the right end of the rotating arm bracket 25 is provided with a locking pin for preventing the chain wheel shaft 28 from loosening.
The chain pressing mechanism of the embodiment has a compact integral structure, a simple structure and high reliability, and when the power input shaft 27 of the main roadway driving wheel rises or falls under the driving of the lifting mechanism, the rotating arm 24 swings around the middle hinge point 24-4, so that the left end and the right end of the rotating arm 24 alternately rise or fall; when the power input shaft 27 of the main roadway traveling wheel rises, the left end of the rotating arm 24 rises, and the right end of the rotating arm 24 descends to press down the chain and tighten the chain. When the power input shaft 27 of the main roadway traveling wheel descends, the left end of the rotating arm 24 descends, the right end of the rotating arm 24 ascends and leaves the chain, and the chain is tightened by the main roadway driving chain wheel 1 and the main roadway driven chain wheel 29.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A bidirectional walking power assembly with a chain pressing mechanism is characterized by comprising a bidirectional output gear box and the chain pressing mechanism,
the bidirectional output gearbox comprises a power source (22), a power output shaft (4), an assembled gearbox, a sub-roadway driving sprocket (2), a driving spiral bevel gear (3), a turning spiral bevel gear (3A) and a main roadway driving sprocket (1),
the assembly type gearbox is positioned at the output end of the power source (22) and connected with the shell of the power source (22), the output shaft of the power source (22) is positioned inside the assembly type gearbox, the sub-roadway driving sprocket (2) and the driving spiral bevel gear (3) are coaxially arranged on the output shaft of the power source (22), and the driving spiral bevel gear (3) is positioned at the shaft end of the output shaft of the power source (22); the direction-changing spiral bevel gear (3A) is meshed with the driving spiral bevel gear (3), the direction-changing spiral bevel gear (3A) is arranged on the power output shaft (4), two ends of the power output shaft (4) are supported on the assembled gear box through thrust roller bearings, and two ends of the power output shaft (4) extend out of the assembled gear box;
the two ends of a power output shaft (4) are defined to be a front end and a rear end respectively, a turning spiral bevel gear (3A) is located at the rear end of the power output shaft (4), a driven gear spacer ring (6) is arranged between the turning spiral bevel gear (3A) and a thrust roller bearing, a first O-shaped sealing ring (21) is arranged at the joint of the turning spiral bevel gear (3A) and the driven gear spacer ring (6), the first O-shaped sealing ring (21) is positioned at the joint of the turning spiral bevel gear (3A) and the driven gear spacer ring (6) through a rear gland oil seal seat (7A), and the rear gland oil seal seat (7A) is fixed on the assembled type gear box and located inside the assembled type gear box; a rear bearing (19) is arranged at the shaft end part of the rear end of the power output shaft (4), the rear bearing (19) is positioned outside the assembled gear box, the rear bearing (19) is fixed through a rear bearing adjusting gland (7), the rear bearing adjusting gland (7) is arranged on the outer box wall of the assembled gear box, a first bearing cavity for installing the rear bearing (19) is arranged on the rear bearing adjusting gland (7), a second O-shaped sealing ring (20) is arranged in the first bearing cavity, the second O-shaped sealing ring (20) is in small clearance fit with the outer ring surface of the rear bearing (19), and the rear bearing (19) is in interference fit with the power output shaft (4);
the main roadway driving sprocket (1) is arranged on the power output shaft (4) and is positioned at the front end of the power output shaft (4), the main roadway driving sprocket (1) is positioned outside the assembled gear box, and a power shaft gland (14) is arranged at the end part of the front end of the power output shaft (4); a front bearing (15) is arranged on the power output shaft (4), the front bearing (15) is positioned outside the assembled gear box, and a driving sprocket space ring (11) is sleeved on the power output shaft (4) between the front bearing (15) and the thrust roller bearing; the front bearing (15) is fixed through a front bearing adjusting gland (8), the front bearing adjusting gland (8) is arranged on the outer box wall of the split type gear box, a second bearing cavity used for installing the front bearing (15) is formed in the front bearing adjusting gland (8), a third O-shaped sealing ring (17) is arranged in the second bearing cavity, the third O-shaped sealing ring (17) is in small clearance fit with the surface of the outer ring of the front bearing (15), and the front bearing (15) is in interference fit with the power output shaft (4); a front gland oil seal seat (8A) is arranged at the front end of the power output shaft (4) corresponding to the thrust roller bearing, the front gland oil seal seat (8A) is arranged on the inner box wall of the split type gear box, and a fourth O-shaped sealing ring (18) is arranged between the front gland oil seal seat (8A) and the power output shaft (4);
the chain pressing mechanism comprises a pressing chain wheel (23), a rotating arm (24), a rotating arm support (25) and a push-pull swing arm (26) which are matched with a chain, the chain bypasses a main roadway driving chain wheel (1) and a main roadway driven chain wheel (29), and the main roadway driven chain wheel (29) is arranged on a main roadway traveling wheel power input shaft (27);
the push-pull swing arm (26) comprises a swing arm sleeve (26-1) and a swing arm (26-2), the swing arm (26-2) is vertically arranged on the outer cylinder wall of the swing arm sleeve (26-1), the swing arm sleeve (26-1) is rotatably arranged on a main roadway road wheel power input shaft (27), and the free end of the swing arm (26-2) is hinged with a rotating arm (24);
the body of the rotating arm (24) is provided with three connecting points, namely a left end hinge point (24-2), a right end connecting point (24-3) and a middle hinge point (24-4) positioned between the left end hinge point (24-2) and the right end connecting point (24-3), and rotating shafts of the left end hinge point (24-2), the right end connecting point (24-3) and the middle hinge point (24-4) are parallel; the left end hinge point (24-2) is connected with the free end of the swing arm (26-2), and the middle hinge point (24-4) is connected with the rotating arm bracket (25);
the rotating arm support (25) is vertically arranged, the rotating arm support (25) is positioned between the power input shaft (27) of the main roadway traveling wheel and the bidirectional output gear box, and the bottom of the rotating arm support (25) is fixed; the top of the rotating arm support (25) extends upwards to form a boss seat (25-1), and the boss seat (25-1) is connected with a middle hinge point (24-4) of the rotating arm (24); a guide groove (25-2) is vertically formed in the surface of the body of the rotating arm support (25), the width of the guide groove (25-2) is equal to that of the swing arm sleeve (26-1), and the guide groove (25-2) is clamped with the end faces of two sides of the swing arm sleeve (26-1);
the pressing chain wheel (23) is rotatably arranged on a chain wheel shaft (28), the pressing chain wheel (23) is positioned right above a chain between the main roadway driving chain wheel (1) and the main roadway driven chain wheel (29), one end part of the chain wheel shaft (28) is in threaded connection with a right end connecting point (24-3) of the rotating arm support (25), and the right end of the rotating arm support (25) is provided with a locking pin for preventing the chain wheel shaft (28) from loosening.
2. The bidirectional traveling power assembly with the chain pressing mechanism as recited in claim 1, further comprising an oil scraping plate (3B), wherein the oil scraping plate (3B) is sleeved on an output shaft of the power source (22), and the oil scraping plate (3B) is clamped between the sub-tunnel driving sprocket (2) and the driving spiral bevel gear (3) to block grease thrown out by the driving spiral bevel gear (3).
3. The bidirectional traveling power assembly with a chain pressing mechanism as recited in claim 2, wherein the bidirectional traveling power assembly with a chain pressing mechanism further comprises an oil collecting tank (10A), the oil collecting tank (10A) being located below the oil scraping plate (3B) for collecting grease caught by the oil scraping plate (3B); the two ends of the oil collecting tank (10A) are high and the middle is low, and the middle part of the oil collecting tank (10A) is communicated with the assembled gear box and used for conveying collected grease into the assembled gear box.
4. The bidirectional walking power assembly with the chain pressing mechanism as recited in claim 3, wherein the split mounting type gearbox comprises a bottom plate, an end cover plate (5), a front gearbox cover plate (10) and a rear gearbox cover plate (9), the front gearbox cover plate (10) and the rear gearbox cover plate (9) are arranged in parallel, one end of each of the front gearbox cover plate (10) and the rear gearbox cover plate (9) is connected with the shell of the power source (22), the other end of each of the front gearbox cover plate (10) and the rear gearbox cover plate (9) is respectively connected with two ends of the end cover plate (5), and the bottom plate, the end cover plate (5), the front gearbox cover plate (10), the rear gearbox cover plate (9) and the shell of the power source (22) enclose the gearbox; the front end and the rear end of the power output shaft (4) are respectively supported on a front gear box cover plate (10) and a rear gear box cover plate (9) through thrust roller bearings.
5. The assembly of claim 4, wherein the oil sump (10A) is placed on the bottom plate of the split gearbox, and one end of the oil sump (10A) extends from the front gearbox cover plate (10).
6. The bi-directional traveling power assembly with chain pressing mechanism according to claim 1, characterized in that the rear bearing (19) is a deep groove ball bearing 6803 and the front bearing (15) is a deep groove ball bearing 6804.
7. The bi-directional traveling power assembly with chain pressing mechanism according to claim 1, characterized in that the power source (22) is constituted by a motor and a speed reducer.
8. The bidirectional walking power assembly with chain pressing mechanism of claim 1, wherein the swing arm sleeve (26-1) is rotatably connected with the power input shaft of the main roadway traveling wheel through a bearing, the bearing is installed in a bearing cavity on the swing arm sleeve (26-1), and the outer ring of the bearing is limited by two retainer rings.
9. The bi-directional walking power assembly with chain pressing mechanism as claimed in claim 1, wherein the rotating arm (24) is "U" shaped, and the free end of the swing arm (26-2) and the boss base (25-1) at the top of the rotating arm support (25) are inserted into the slot (24-1) of the "U" shaped rotating arm (24).
10. The assembly of claim 1, wherein the guide groove (25-2) is in clearance fit with the end faces of the swing arm sleeve (26-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440548.3A CN111497605A (en) | 2020-05-22 | 2020-05-22 | Bidirectional walking power assembly with chain pressing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440548.3A CN111497605A (en) | 2020-05-22 | 2020-05-22 | Bidirectional walking power assembly with chain pressing mechanism |
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| Publication Number | Publication Date |
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| CN111497605A true CN111497605A (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010440548.3A Pending CN111497605A (en) | 2020-05-22 | 2020-05-22 | Bidirectional walking power assembly with chain pressing mechanism |
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| Country | Link |
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| CN (1) | CN111497605A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111503245A (en) * | 2020-05-22 | 2020-08-07 | 南京金牛机械制造股份有限公司 | Bidirectional output gearbox |
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