CN115030999B - Eccentric tensioning wheel and diesel engine cooling system - Google Patents
Eccentric tensioning wheel and diesel engine cooling system Download PDFInfo
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- CN115030999B CN115030999B CN202210458769.2A CN202210458769A CN115030999B CN 115030999 B CN115030999 B CN 115030999B CN 202210458769 A CN202210458769 A CN 202210458769A CN 115030999 B CN115030999 B CN 115030999B
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- 238000001816 cooling Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 230000017525 heat dissipation Effects 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 206010024796 Logorrhoea Diseases 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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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
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
- F16H7/1254—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
- F16H7/1263—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially straight path
- F16H7/1272—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially straight path with means for impeding reverse motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/04—Pump-driving arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
- F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D67/00—Combinations of couplings and brakes; Combinations of clutches and brakes
- F16D67/02—Clutch-brake combinations
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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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
- F16H55/46—Split pulleys
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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
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
Abstract
The invention discloses an eccentric tension wheel and a diesel engine cooling system, and relates to the technical field of diesel engines. According to the eccentric tensioning wheel provided by the invention, the tensioning degree of the belt by the outer wheel can be adjusted by rotating the inner wheel relative to the fixed base, and the belt can be tensioned to any degree; the eccentric tension wheel with the one-way speed reducing mechanism can be applied to a gear train needing braking when the wheel train rotates reversely.
Description
Technical Field
The invention relates to the technical field of diesel engines, in particular to an eccentric tensioning wheel and a diesel engine cooling system.
Background
The tensioning wheel is a tensioning device of the belt transmission, when the center distance of the belt cannot be adjusted, the tensioning wheel can be used for tensioning the belt, and the tensioning wheel is a follow-up wheel pressed on the belt for changing the wrap angle of the belt pulley or controlling the tensioning force of the belt.
In the prior art, the continuous tensioning of the belt by the tensioning wheel is generally realized by arranging a plurality of mounting stations to adjust the mounting position of the tensioning wheel, but the adjustment mode cannot realize the tensioning of the belt to any degree.
Disclosure of Invention
The invention aims to provide an eccentric tensioning wheel and a diesel engine cooling system, which aim to overcome the defects in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme: the eccentric tension wheel comprises an inner wheel, wherein the peripheral side of the inner wheel is rotatably connected with an outer wheel through a bearing, and the inner wheel is eccentrically and rotatably connected to a fixed foundation.
Further, the outer wheel is a pulley, a toothed pulley or a sprocket.
Furthermore, a first shaft lever is eccentrically and rotatably connected to the inner wheel, and one end of the first shaft lever is fixedly connected with the fixed foundation.
Furthermore, a first shaft lever is eccentrically and rotatably connected to the inner wheel, a swing rod is fixedly connected to one end of the first shaft lever, a second shaft lever is rotatably connected to the swing rod, and the second shaft lever is fixedly connected with a fixed foundation.
Furthermore, a first elastic unit is arranged between the first shaft rod and the inner wheel, and the elastic force of the first elastic unit drives the inner wheel to rotate relative to the first shaft rod.
Furthermore, a second elastic unit is arranged between the second shaft lever and the swing rod, and the elastic force of the second elastic unit drives the swing rod to rotate relative to the second shaft lever.
Further, the speed reducer comprises a one-way speed reducing mechanism which is assembled to drive the outer wheel to reduce speed relative to the inner wheel when the outer wheel rotates relative to the inner wheel along one rotation direction.
Further, the one-way reduction mechanism includes: a plurality of ratchet teeth arranged in a circumferential array on the inner side of the outer wheel; the first friction ring is fixedly sleeved on the peripheral side of the inner wheel and is provided with a first friction end face; at least one pawl which is elastically and rotatably arranged on the first friction ring and is matched with each ratchet; the second friction ring is arranged on the inner wheel in a sliding manner along the axial direction of the inner wheel and is provided with a second friction end surface facing the first friction end surface; and the elastic component is used for driving the second friction ring to slide so that the second friction end surface is abutted to the first friction end surface.
Further, the elastic component comprises at least one guide rod, one end of the guide rod is fixedly connected to the inner wheel, the other end of the guide rod is provided with an end cap, the second friction ring is arranged on the guide rod in a sliding mode, a pressure spring is sleeved on the guide rod, one end of the pressure spring abuts against the end cap, and the other end of the pressure spring abuts against the second friction ring.
A cooling system of a diesel engine comprises a belt wheel train driven by a crankshaft of the diesel engine and the eccentric tension pulley, wherein the power output end of the belt wheel train drives a heat dissipation water pump and/or a heat dissipation fan of the diesel engine to operate, and the eccentric tension pulley is used for tensioning a belt of the belt wheel train.
In the technical scheme, the eccentric tensioning wheel provided by the invention can adjust the tensioning degree of the outer wheel to the belt by rotating the inner wheel relative to the fixed base, and can realize the tensioning of the belt at any degree.
Due to the technical effect of the eccentric tensioning wheel, the cooling system of the diesel engine comprising the eccentric tensioning wheel also has the corresponding technical effect.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
FIGS. 1-3 are schematic views of an eccentric tensioner according to an embodiment of the present invention;
FIG. 4 is a structural cross-sectional view of an eccentric tensioner according to an embodiment of the present invention;
FIGS. 5-7 are schematic views of an eccentric tensioner according to another embodiment of the present invention;
FIG. 8 is a cross-sectional view of an eccentric tensioner according to another embodiment of the present invention;
FIGS. 9-10 are schematic structural diagrams of a cooling system of a diesel engine according to an embodiment of the present invention;
fig. 11 is a schematic view of a connection structure of a first inner wheel, a first electromagnetic clutch and a first outer wheel according to an embodiment of the present invention;
fig. 12 is a sectional view of a connection structure of a first inner ring, a first electromagnetic clutch, and a first outer ring according to an embodiment of the present invention.
Description of reference numerals:
1. an inner wheel; 2. a bearing; 3. an outer wheel; 4. a first shaft lever; 5. a swing rod; 6. a second shaft lever; 7. a first elastic unit; 8. a second elastic unit; 9. a one-way speed reduction mechanism; 9.1, ratchets; 9.2, a first friction ring; 9.3, a pawl; 9.4, a second friction ring; 9.5, an elastic component; 9.51, a guide rod; 9.52, end caps; 9.53, pressure spring; 10. an inner wheel train; 10.1, a first inner wheel; 10.2, driving wheels; 10.3, a second inner wheel; 10.4, double-sided V-ribbed belts; 11. an outer wheel train; 11.1, a first outer wheel; 11.11, a rotating part; 11.12, a belt wheel; 11.13, a clamping structure; 11.2, a second outer wheel; 11.3, a belt; 12. a heat radiation fan; 13. a heat-dissipating water pump; 14. a first clutch mechanism; 14.1, an armature; 15. and a second clutch mechanism.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1-12, an eccentric tension wheel according to an embodiment of the present invention includes an inner wheel (1), an outer wheel (3) rotatably connected to a peripheral side of the inner wheel (1) through a bearing (2), and the inner wheel (1) eccentrically rotatably connected to a fixed base. Further, the outer wheel (3) is a belt (11.3) wheel (11.12), a toothed belt wheel (11.12) or a chain wheel.
In the technical scheme, the tensioning degree of the outer wheel (3) to the belt (11.3) can be adjusted by rotating the inner wheel (1) relative to the fixed foundation, and the belt (11.3) can be tensioned to any degree.
As the preferable technical scheme of the embodiment, a first shaft lever (4) is eccentrically and rotatably connected to the inner wheel (1), and one end of the first shaft lever (4) is fixedly connected with a fixed foundation. A first elastic unit (7) is arranged between the first shaft lever (4) and the inner wheel (1), and the elastic force of the first elastic unit (7) drives the inner wheel (1) to rotate relative to the first shaft lever (4). In this way, after the belt (11.3) is loosened, the elastic force of the first elastic unit (7) can automatically tension the belt (11.3). Specifically, the first elastic unit (7) is a first torsion spring, which is sleeved on the first shaft lever (4), one end of which is fixedly connected with the first shaft lever (4), and the other end of which is fixedly connected with the inner wheel (1).
As another preferable technical scheme of the embodiment, a first shaft lever (4) is eccentrically and rotatably connected to the inner wheel (1), a swing rod (5) is fixedly connected to one end of the first shaft lever (4), a second shaft lever (6) is rotatably connected to the swing rod (5), and the second shaft lever (6) is fixedly connected with a fixed foundation. A first elastic unit (7) is arranged between the first shaft lever (4) and the inner wheel (1), the inner wheel (1) is driven by the elastic force of the first elastic unit (7) to rotate relative to the first shaft lever (4), a second elastic unit (8) is arranged between the second shaft lever (6) and the swing rod (5), and the swing rod (5) is driven by the elastic force of the second elastic unit (8) to rotate relative to the second shaft lever (6). Specifically, the first elastic unit (7) is preferably a first torsion spring, the second elastic unit (8) is a second torsion spring, the second torsion spring is sleeved on the second shaft rod (6), one end of the second torsion spring is fixedly connected with the second shaft rod (6), and the other end of the second torsion spring is fixedly connected with the swing rod (5). Thus, the width of the eccentric tensioning pulley tensioning belt (11.3) can be greatly increased under the condition that the diameter of the inner wheel (1) is not increased.
In another embodiment of the invention, with reference to figures 6 to 8, it further comprises a one-way reduction mechanism (9), the one-way reduction mechanism (9) being arranged to drive the outer wheel (3) to reduce the speed of the inner wheel (1) when the outer wheel (3) is rotated in one of the directions of rotation relative to the inner wheel (1). Specifically, one-way reduction gears (9) include a plurality of ratchet (9.1), first friction ring (9.2), at least one pawl (9.3), second friction ring (9.4) and elastic component (9.5), wherein, a plurality of ratchet (9.1) are the circumference array and set up in the inboard of foreign steamer (3), first friction ring (9.2) fixed cover is located the week side of interior wheel (1), first friction ring (9.2) have a first friction terminal surface, pawl (9.3) elastic rotation sets up on first friction ring (9.2), pawl (9.3) and each ratchet (9.1) cooperate, second friction ring (9.4) along interior wheel (1) axial slip set up on interior wheel (1), second friction ring (9.4) have a second friction terminal surface towards first friction terminal surface, elastic component (9.5) are used for driving second friction ring (9.4) to slide, so that the second friction terminal surface butt. Preferably, the elastic assembly (9.5) comprises at least one guide rod (9.51), one end of the guide rod (9.51) is fixedly connected to the inner wheel (1), the other end of the guide rod is provided with an end cap (9.52), the second friction ring (9.4) is arranged on the guide rod (9.51) in a sliding mode, a pressure spring (9.53) is sleeved on the guide rod (9.51), one end of the pressure spring (9.53) abuts against the end cap (9.52), and the other end of the pressure spring (9.53) abuts against the second friction ring (9.4).
In the embodiment, when the belt (11.3) drives the outer wheel (3) to rotate along one of the rotation directions, each ratchet (9.1) smoothly slides through the pawl (9.3), the outer wheel (3) can smoothly rotate, and when the belt (11.3) drives the outer wheel (3) to reversely rotate along the other rotation direction, the ratchet (9.1) on the inner wall of the outer wheel (3) blocks the pawl (9.3), so that the first friction ring (9.2) is driven to rotate together, friction is generated between the first friction ring (9.2) and the second friction ring (9.4), and the belt (11.3) and the outer wheel (3) are decelerated and even stopped to rotate. The eccentric tensioning wheel provided by the embodiment can be applied to a wheel train needing braking when the reverse rotation is required.
The invention also provides a cooling system of the diesel engine, which comprises a belt (11.3) wheel (11.12) system driven by the crankshaft of the diesel engine and the eccentric tension pulley, wherein the power output end of the belt (11.3) wheel (11.12) system drives the heat dissipation water pump (13) and/or the heat dissipation fan (12) of the diesel engine to operate, and the eccentric tension pulley is used for tensioning the belt (11.3) of the belt (11.3) wheel (11.12) system. Referring to fig. 9-10, the belt (11.3) wheel (11.12) includes an inner wheel train (10) and an outer wheel train (11), two eccentric tensioning wheels are provided for tensioning the inner wheel train (10) and the outer wheel train respectively, the inner wheel train (10) includes a driving wheel (10.2), a first inner wheel (10.1), a second inner wheel (10.3) and a double-sided multi-wedge belt (10.4), the outer wheel train (11) includes a first outer wheel (11.1), a second outer wheel (11.2) and a belt (11.3), the first inner wheel (10.1) drives a heat-dissipating water pump (13) of the diesel engine to operate, the first outer wheel (11.1) is provided with a heat-dissipating fan (12), the driving wheel (10.2) is connected to a crankshaft of the diesel engine and is driven by the crankshaft, the inner side of the double-sided multi-wedge belt (10.4) is sleeved on the driving wheel (10.2) and the first inner wheel (10.1), the outer side of the double-sided multi-wedge belt (10.4) is sleeved on the second inner wheel train (10.1) and the second inner wheel (11.1), the heat-dissipating water pump (11.1) and the second outer wheel train (11.1) drives the heat-dissipating water pump (11.1). The first outer wheel (11.1) is coaxially connected with the first inner wheel (10.1), and the clutch further comprises a first clutch mechanism (14) for driving the first outer wheel (11.1) to be in clutch with the first inner wheel (10.1), and a second clutch mechanism (15) for driving the second outer wheel (11.2) to be in clutch with the second inner wheel (10.3); when only the first clutch mechanism (14) is attracted, namely the first clutch mechanism (14) attracts the first inner wheel (10.1) and the first outer wheel (11.1), and when the second clutch mechanism (15) is detached from attraction, the first inner wheel (10.1) drives the cooling fan (12) to rotate through the first outer wheel (11.1) to blow air to a water tank radiator of the diesel engine; when only the second clutch mechanism (15) is sucked, the outer wheel train (11) is driven by the second inner wheel (10.3) to reversely rotate the radiating fan (12) to suck air to a radiator of a water tank of the diesel engine.
According to the technical scheme, the inner wheel train (10) is driven by a crankshaft of a diesel engine through a driving wheel (10.2) and then is transmitted to a first inner wheel (10.1) through a double-sided V-ribbed belt (10.4), and the first inner wheel (10.1) drives a heat dissipation water pump (13) of the diesel engine to operate so as to dissipate heat of the diesel engine. When the first clutch mechanism (14) is attracted, namely the first clutch mechanism (14) attracts the first inner wheel (10.1) and the first outer wheel (11.1), and the second clutch mechanism (15) is detached from the attraction, the inner wheel train (10) drives the first outer wheel (11.1) to rotate through the first inner wheel (10.1) while driving the heat dissipation water pump (13) to operate, and the first outer wheel (11.1) drives the heat dissipation fan (12) to rotate forward to blow air to the water tank radiator, so that the heat exchange between the water tank radiator and the air is accelerated. The process that radiator fan (12) bloied to the water tank radiator lasts longer time after, can lead to the garrulous end of crop to be attached to the water tank radiator of diesel engine gradually, when the crop garrulous end on the water tank radiator accumulated a certain amount, even radiator fan (12) bloied to the water tank radiator, still can lead to the heat of water tank radiator in can't giving off the air. Therefore, the first clutch mechanism (14) needs to be separated from the first clutch mechanism, the transmission between the first outer wheel (11.1) and the first inner wheel (10.1) is disconnected, after the cooling fan (12) stops rotating under wind resistance, the second clutch mechanism (15) is attracted, the second outer wheel (11.2) and the second inner wheel (10.3) are transmitted, the outer side of the double-sided multi-wedge belt (10.4) is sleeved on the second inner wheel (10.3), so that the rotating direction of the second inner wheel (10.3) is opposite to that of the first inner wheel (10.1), the rotating direction of the second outer wheel (11.2) is opposite to that of the first inner wheel (10.1), the second outer wheel (11.2) drives the first outer wheel (11.1) to rotate through the transmission assembly, the cooling fan (12) is enabled to suck air to the radiator reversely, the last crop on the water tank is further sucked away, the air heat exchange efficiency of the air crusher and the heat exchanger is promoted to realize the heat exchange of the crushed crops without stopping, and the heat radiator (13) is carried out on the crushed water on the radiator. After the crop dust attached to the radiator of the water tank is completely sucked, the second clutch mechanism (15) is separated from suction, the first clutch mechanism (14) is sucked, and the cooling fan (12) rotates forwards.
As preferred, two-sided polywedge bet (10.4) are including the annular midband body, the inboard and outboard dislocation of midband body is provided with many wedges arriss, compare with the both sides wedges arris symmetrical arrangement of traditional midband body, two-sided polywedge bet (10.4) in this scheme can enough realize two-sided polywedge bet (10.4) two-sided transmission, the effect that prevents to skid, can increase its intensity again, make two-sided polywedge bet (10.4) difficult fracture, the life of two-sided polywedge bet (10.4) has been improved greatly. Preferably, the first clutch mechanism (14) is preferably a first electromagnetic clutch; the second clutch mechanism (15) is preferably a second electromagnetic clutch.
In still another embodiment of the present invention, referring to fig. 11-12, the first outer wheel (11.1) includes a rotating portion (11.11) and a pulley (11.12), the pulley (11.12) is rotatably connected to the rotating portion (11.11), the cooling fan (12) is fixedly installed on the rotating portion (11.11), the rotating portion (11.11) is coaxially and rotatably connected to the first inner wheel (10.1), the rotating portion (11.11) is slidably connected to an armature (14.1) of the first electromagnetic clutch, the sliding direction is an axial direction of the rotating portion (11.11), a clamping structure (11.13) is disposed between the armature (14.1) of the first electromagnetic clutch and an end face of the pulley (11.12), and specifically, the clamping structure (11.13) includes at least one first clamping portion fixedly connected to the armature (14.1) of the first electromagnetic clutch, and at least one second clamping portion fixedly connected to an end face of the pulley (11.12); when the first electromagnetic clutch is disengaged from attraction, the armature (14.1) of the first electromagnetic clutch slides to be close to the belt wheel (11.12) under the elastic force of the return spring of the first electromagnetic clutch so as to enable the clamping structure (11.13) to be clamped; when the first electromagnetic clutch is engaged, the engaging structure (11.13) is disengaged.
In the embodiment, when the first electromagnetic clutch is in attraction, the clamping mechanism is disengaged, the first inner wheel (10.1) drives the cooling fan (12) to rotate forward through the rotating part (11.11) to blow air to the radiator of the water tank, only the rotating part (11.11) in the outer wheel train (11) rotates, and other parts including the belt wheel (11.12) do not rotate, so that the transmission power of the inner wheel train (10) can be saved, and the energy consumption of a diesel engine can be saved; when the heat dissipation performance of the radiator of the water tank is reduced after more crop debris is attached to the radiator of the water tank, the first clutch mechanism (14) is disengaged from actuation, an armature (14.1) of the first electromagnetic clutch slides to be close to a belt wheel (11.12) under the elastic force action of a return spring of the first electromagnetic clutch so as to enable a clamping structure (11.13) to be clamped, at the moment, the residual rotational inertia of the heat dissipation fan (12) overcomes wind resistance and drives an originally static outer wheel train (11) to rotate, at the moment, the one-way speed reduction mechanism (9) used for tensioning the eccentric tension wheel of the outer wheel train (11) plays a speed reduction effect, the outer wheel (3) of the eccentric tension wheel rotates relative to the inner wheel (1) due to the rotation of the outer wheel train (11), a ratchet (9.1) on the inner wall of the outer wheel (3) clamps the ratchet (9.3), so as to drive the first friction ring (9.2) to rotate together, friction is generated between the first friction ring (9.2) and the second friction ring (9.4), so that the belt (11.3) and the outer wheel (3) rapidly accelerate and decelerate the heat dissipation fan, and further, so as to shorten the heat dissipation time of the heat dissipation fan (12) for the heat dissipation operation of the radiator; when the cooling fan (12) stops rotating, the second clutch mechanism (15) is actuated, the second inner wheel (10.3) drives the outer wheel train (11) to rotate through the second outer wheel (11.2), the belt wheel (11.12) of the first outer wheel (11.1) drives the rotating part (11.11) to rotate, so that the cooling fan (12) is driven to reversely wind the water tank radiator, the ratchets (9.1) of the eccentric tensioning wheel smoothly slide on the pawl (9.3), the outer wheel (3) can smoothly rotate, and the one-way speed reducing mechanism (9) does not play a role in reducing speed.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and are not to be construed as limiting the scope of the invention.
Claims (8)
1. An eccentric tension pulley is characterized by comprising an inner wheel, wherein the peripheral side of the inner wheel is rotatably connected with an outer wheel through a bearing, and the inner wheel is eccentrically and rotatably connected to a fixed foundation;
also included is a one-way reduction mechanism configured to drive the outer wheel to reduce speed relative to the inner wheel when the outer wheel is rotated relative to the inner wheel in one of the rotational directions, the one-way reduction mechanism comprising:
a plurality of ratchet teeth arranged in a circumferential array on the inner side of the outer wheel;
the first friction ring is fixedly sleeved on the peripheral side of the inner wheel and is provided with a first friction end face;
at least one pawl, it is elastic and rotationally arranged on said first friction ring, it cooperates with every ratchet;
the second friction ring is arranged on the inner wheel in a sliding manner along the axial direction of the inner wheel and is provided with a second friction end surface facing the first friction end surface;
the elastic assembly is used for driving the second friction ring to slide so that the second friction end surface abuts against the first friction end surface;
when the belt drives the foreign steamer to rotate along one of the rotating directions, each ratchet smoothly slides from the pawl, the foreign steamer can smoothly rotate, when the belt drives the foreign steamer to rotate along the other rotating direction, the ratchet on the inner wall of the foreign steamer clamps the pawl, so that the first friction ring is driven to rotate together, friction is generated between the first friction ring and the second friction ring, and the belt and the foreign steamer are decelerated and even stopped to rotate.
2. An eccentric tensioner according to claim 1, characterized in that the outer wheel is a pulley, a toothed pulley or a sprocket.
3. The eccentric tensioner according to claim 1, wherein a first shaft is eccentrically and rotatably connected to said inner wheel, and one end of said first shaft is fixedly connected to a fixed base.
4. The eccentric tension wheel according to claim 1, wherein a first shaft is eccentrically and rotatably connected to the inner wheel, a swing link is fixedly connected to one end of the first shaft, a second shaft is rotatably connected to the swing link, and the second shaft is fixedly connected to a fixed base.
5. The eccentric tensioner according to claim 4, wherein a first elastic unit is disposed between the first shaft and the inner wheel, and the elastic force of the first elastic unit drives the inner wheel to rotate relative to the first shaft.
6. An eccentric tensioner according to claim 5, characterized in that a second elastic unit is arranged between the second shaft and the swing link, and the elastic force of the second elastic unit drives the swing link to rotate relative to the second shaft.
7. An eccentric tensioner according to claim 1, wherein said elastic member comprises at least one guiding rod, one end of said guiding rod is fixedly connected to said inner wheel, and the other end of said guiding rod is provided with an end cap, said second friction ring is slidably disposed on said guiding rod, said guiding rod is sleeved with a compression spring, one end of said compression spring is abutted against said end cap, and the other end of said compression spring is abutted against said second friction ring.
8. A cooling system for a diesel engine, comprising a pulley system driven by a crankshaft of the diesel engine and an eccentric tensioner as claimed in any one of claims 1 to 7, wherein a power output end of the pulley system drives a heat dissipation water pump and/or a heat dissipation fan of the diesel engine to operate, and the eccentric tensioner is used for tensioning a belt of the pulley system.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210458769.2A CN115030999B (en) | 2022-04-27 | 2022-04-27 | Eccentric tensioning wheel and diesel engine cooling system |
| PCT/CN2023/079596 WO2023207333A1 (en) | 2022-04-27 | 2023-03-03 | Eccentric tensioning wheel and diesel engine cooling system |
| LU503850A LU503850B1 (en) | 2022-04-27 | 2023-03-03 | Eccentric tensioning wheel and diesel engine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210458769.2A CN115030999B (en) | 2022-04-27 | 2022-04-27 | Eccentric tensioning wheel and diesel engine cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115030999A CN115030999A (en) | 2022-09-09 |
| CN115030999B true CN115030999B (en) | 2022-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210458769.2A Active CN115030999B (en) | 2022-04-27 | 2022-04-27 | Eccentric tensioning wheel and diesel engine cooling system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN115030999B (en) |
| LU (1) | LU503850B1 (en) |
| WO (1) | WO2023207333A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030999B (en) * | 2022-04-27 | 2022-12-23 | 安徽全柴动力股份有限公司 | Eccentric tensioning wheel and diesel engine cooling system |
| CN114876623B (en) * | 2022-04-27 | 2022-12-20 | 安徽全柴动力股份有限公司 | Diesel engine cooling system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4917655A (en) * | 1989-03-01 | 1990-04-17 | Ina Bearing Co., Inc. | Self adjusting timing belt tensioner |
| US5370585A (en) * | 1993-01-27 | 1994-12-06 | The Gates Rubber Company | Eccentric type belt tensioner with cam operated damping means |
| JPH084856A (en) * | 1994-06-14 | 1996-01-12 | Bando Chem Ind Ltd | Automatic tensioner |
| US6375588B1 (en) * | 1999-04-12 | 2002-04-23 | Litens Automotive Partnership | Tensioner with viscous coupled one way wrap spring anti-kickback clutch |
| CN101344161A (en) * | 2007-07-13 | 2009-01-14 | 上海振华轴承总厂 | Automatic belt tensioning wheel of belt transmission system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4301850A1 (en) * | 1993-01-24 | 1994-07-28 | Ruecker Gmbh | Automatic mechanical transmission belt tensioning system |
| US20040166975A1 (en) * | 2000-06-16 | 2004-08-26 | Gibson Fabian W. | Timing belt autotensioner with an anti-tooth skip mechanism |
| WO2001096763A2 (en) * | 2000-06-16 | 2001-12-20 | Gibson Fabian W | Timing belt autotensioner with an anti-tooth skip mechanism |
| US7442137B2 (en) * | 2005-03-28 | 2008-10-28 | The United States Of America As Represented By The Secretary Of The Army | Eccentric mounting and adjustment system for belt driven devices |
| DE202007005948U1 (en) * | 2006-12-21 | 2007-07-12 | Schaeffler Kg | Eccentric tensioner, e.g. for a belt drive, has a working eccentric and a setting eccentric with a torsion spring as a pretensed unit |
| CN214652837U (en) * | 2021-02-26 | 2021-11-09 | 尼得科电梯(青岛)有限公司 | Elevator buffer convenient to replace parts |
| CN217056190U (en) * | 2022-04-27 | 2022-07-26 | 安徽全柴动力股份有限公司 | Diesel engine belt tensioning transmission structure |
| CN115030999B (en) * | 2022-04-27 | 2022-12-23 | 安徽全柴动力股份有限公司 | Eccentric tensioning wheel and diesel engine cooling system |
-
2022
- 2022-04-27 CN CN202210458769.2A patent/CN115030999B/en active Active
-
2023
- 2023-03-03 LU LU503850A patent/LU503850B1/en active IP Right Grant
- 2023-03-03 WO PCT/CN2023/079596 patent/WO2023207333A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4917655A (en) * | 1989-03-01 | 1990-04-17 | Ina Bearing Co., Inc. | Self adjusting timing belt tensioner |
| US5370585A (en) * | 1993-01-27 | 1994-12-06 | The Gates Rubber Company | Eccentric type belt tensioner with cam operated damping means |
| JPH084856A (en) * | 1994-06-14 | 1996-01-12 | Bando Chem Ind Ltd | Automatic tensioner |
| US6375588B1 (en) * | 1999-04-12 | 2002-04-23 | Litens Automotive Partnership | Tensioner with viscous coupled one way wrap spring anti-kickback clutch |
| CN101344161A (en) * | 2007-07-13 | 2009-01-14 | 上海振华轴承总厂 | Automatic belt tensioning wheel of belt transmission system |
Also Published As
| Publication number | Publication date |
|---|---|
| LU503850B1 (en) | 2023-11-06 |
| WO2023207333A1 (en) | 2023-11-02 |
| CN115030999A (en) | 2022-09-09 |
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