CN107743558A - Independent tensioning apparatus - Google Patents
Independent tensioning apparatus Download PDFInfo
- Publication number
- CN107743558A CN107743558A CN201680019506.4A CN201680019506A CN107743558A CN 107743558 A CN107743558 A CN 107743558A CN 201680019506 A CN201680019506 A CN 201680019506A CN 107743558 A CN107743558 A CN 107743558A
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- China
- Prior art keywords
- piston
- tensioning apparatus
- tensioner
- container
- pressure
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Classifications
-
- 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
- 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
- F16H7/1209—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means
- F16H7/1236—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means of the fluid and restriction type, e.g. dashpot
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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
- F16H7/0829—Means for varying tension of belts, ropes, or chains with vibration damping means
- F16H7/0836—Means for varying tension of belts, ropes, or chains with vibration damping means of the fluid and restriction type, e.g. dashpot
-
- 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
- F16H2007/0802—Actuators for final output members
- F16H2007/0806—Compression coil springs
-
- 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
- F16H2007/0802—Actuators for final output members
- F16H2007/0812—Fluid pressure
-
- 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
- F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
- F16H2007/0859—Check valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The present invention relates to a kind of independent tensioning apparatus of the drive chain in particular for combustion motors, the independent tensioning apparatus has housing and the tensioner piston guided in a manner of it can move in the piston hole of the housing, separates the hyperbaric chamber and the low-pressure chamber for the hyperbaric chamber of hydraulic medium and low-pressure chamber and the tensioner piston wherein being constructed in the piston hole.Piston rod is arranged on the tensioner piston, the piston rod out extends from the tensioner piston through the low-pressure chamber.In addition, there is provided the buffer gear of the immigration motion in the hydraulic medium container with volume compensation mechanism and the tensioner piston to piston hole.
Description
Technical field
The present invention relates to a kind of drive chain, independent tensioning apparatus in particular for combustion motors, independent
Tight device：With housing；The tensioner piston guided in a manner of it can move in the piston hole of the housing, wherein
Constructed in the piston hole for the hyperbaric chamber of hydraulic medium and low-pressure chamber and the tensioner piston by the hyperbaric chamber with
The low-pressure chamber separates；And there is piston rod, the piston rod extends from the tensioner piston through the low-pressure chamber；For
The container of hydraulic medium；Check-valves；Volume compensation mechanism；And with for the tensioner piston to the shifting in the piston hole
Enter the buffer gear of motion.In addition, it is used for horse of burning with such independent tensioning apparatus the present invention relates to a kind of
The chain and sprocket driving device reached.
Background technology
Be used as in combustion motors the simple tensioning apparatus of chain tensioning device or belt stress tensioner piston with
There is balancing gate pit between stretcher housing, the balancing gate pit in order to row buffering is entered in the immigration campaign to the tensioner piston and with hydraulic pressure
Medium come load and the balancing gate pit in buffering under the high pressure.In addition, generally also arrange use in the hyperbaric chamber
In by the compression spring of the tensioner piston pretension.Pass through the throttling between the piston hole in the housing and the tensioner piston
Corresponding restriction in gap or the side for passing through the tensioner piston, the hydraulic medium can pass through the tensioning
The immigration of piston is spilt when moving the pressure increase in the hyperbaric chamber from the balancing gate pit, for the tensioner piston
Row buffering is entered in immigration campaign.Among the hyperbaric chamber is in connection by check-valves and machine oil loop, for substituting the liquid overflowed
Press medium.
The hydraulic medium under pressure in the hyperbaric chamber rushes even in relatively strong and strong vibration
Hit the too remote immigration being also prevented from when being applied to the tensioner piston in the tensioner piston to the housing.Filled by the tensioning
The installation site put and the situation by the machine oil loop to hyperbaric chamber supply hydraulic medium, in fact it could happen that the pressure
Part the or complete emptying of room.Thus especially it is likely to occur the tensioner piston almost when starting the motor
The immigration campaign not buffered, thus not only there may be the unwelcome rattle of the combustion motors, and very
The tripping of Quality Initiative or odontoid belt may extremely be caused（Überspringen）.This effect the tensioner piston along
The working region in tight direction due to becoming serious when wear reason moves.
In order to prevent the unwelcome immigration campaign in the tensioner piston to the housing, except with by means of bullet
Outside the tensioning apparatus for the purely mechanic lockable mechanism that the latch elements of spring loading are prevented the immigration motion of the piston,
Also having has in a hydrodynamic manner the tensioning apparatus of the weight regulating mechanism to manipulate, and the weight regulating mechanism can be realized described
The continuous movement of the working region of tensioner piston.These have the scheme of the continuous movement of the working region of tensioner piston
Always need to supply hydraulic medium externally to hyperbaric chamber.
In addition, there is the independent tensioning apparatus of the hydraulic system with closing, filled for the independent tensioning
The light leak in the hyperbaric chamber in the inside of the clamping device of violent decline and the closing of hydraulic medium pressure is prevented for putting.This
The independent hydraulic tensioner of sample is disclosed from the A1 of DE 10 2,008 016 654.It is this itself closing from
The tensioning apparatus of body tensioning includes the housing and free-piston of column, wherein the housing of the column has the work in the housing
The tensioner piston guided in consent, piston rod is integratedly constructed on the tensioner piston, wherein the piston rod passes through
The free-piston extends.The piston hole of the housing is divided into hyperbaric chamber and low-pressure chamber by the tensioner piston, its
Described in free-piston determined relative to air section outside, under atmospheric pressure in the tensioning apparatus it is described low
The boundary line of the hydraulic container of pressure chamber.Because the body in hyperbaric chamber described in the immigration motion or removal motion of the tensioner piston
Product changes, so must receive the hydraulic medium or corresponding from the hyperbaric chamber to compensate the low-pressure chamber
Ground provides, wherein the free-piston is moved relative to the housing.Due to bottom orientation（bodenorientiert）
Construction, the piston rod of this independent hydraulic tensioner tend to tilt, therefore except for the expensive of the free-piston
Also only allow small tolerance outside sealing, thus produce on the whole it is higher, for manufacturing such independent hydraulic pressure
The expense of tight device.
The A1 of DE 195 10 681 describe a kind of independent tensioning apparatus of the type, wherein in the side of tensioner piston
Face is provided with oil tank on the tensioning end of described device, and the oil tank is hermetically completely cut off by barrier film.The barrier film passes through
The closure member of cup-shaped keeps and is tensioned by the piston of spring pre-tightening relative to the container.Liquid under pressure
Press medium can be by the check-valves in the opening in the piston rod and feed path and the tensioner piston from the oil
Tank is flowed in the hyperbaric chamber of the tensioning apparatus.In order to avoid the too big volume of the hydraulic medium in this tensioning apparatus
Flow and thus avoid the cushioning effect of deficiency, the width of gap leakage receives restriction, but this is in high running temperature
Cause the small cushioning effect of the tensioning apparatus and very strong response characteristic.
The A1 of DE 10 2,011 079 188 show another tensioning apparatus, and another tensioning apparatus has with energy
Tensioner piston that the mode enough moved is guided in piston hole and it is arranged in the side of the tensioner piston and is used for liquid
The container of medium is pressed, wherein the tensioner piston is sealed relative to the piston hole and in advancing side from the housing
In out.Vessel is connected by plurality of passages with the check-valves on the bottom in the piston hole, for hydraulic pressure to be situated between
Matter is conveyed to hyperbaric chamber.Substitution gap leakage is provided with multiple restrictions on the tensioner piston, and the hydraulic medium can
Directly escaped in the container from the restriction from the hyperbaric chamber.The piston of spring pre-tightening in the container should be right
Caused big Volume Changes compensate in operation herein.Due to the high pressure in the hyperbaric chamber, loading conversion
More numbers, the high sliding speed of high temperature and the tensioner piston, and piston hole and tensioning can not be ensured in operation
Reliable and lasting sealing between piston.And in this sealing failure, the whole work(of the independent tensioning apparatus
It can be compromised.
The content of the invention
Thus, task of the invention is, there is provided a kind of independent tensioning apparatus, the independent tensioning apparatus can be with
The shortcomings that with a small amount of component to be easily made and avoid or reduce known tensioning apparatus from the prior art.
The task is solved in a kind of independent tensioning apparatus of the type in the following manner according to the present invention
Certainly：Buffer gear includes being in the gap leakage between tensioner piston and piston hole and the list between hyperbaric chamber and container
Only aperture port（Blendenöffnung）.The aperture port set in addition to the gap leakage is passing through the narrow piston
It can pass through the turbulent flow through aperture in the case of relatively small change while bar hydraulic medium volume in the above-described container
To realize the good damping characteristics for hardly depending on viscosity of the independent tensioning apparatus.Especially thus, it is possible to realize pair
It is described to buffer the viscosity for being more not dependent on hydraulic medium, namely hydraulic pressure in the buffering of the immigration motion of the tensioner piston
The temperature of medium.The damping characteristics are with the rising of running temperature and with unwelcome for traditional tensioning apparatus
Mode tempestuously declines, and for the tensioning apparatus by the present invention while then hydraulic medium volume in the above-described container
The only small change of the damping characteristics is only produced in the case of small change.It is directly in and the low pressure for receiving
Room is among fluidly connecting but the container of the hydraulic medium of the outside in the piston hole can be without free work
Easily received from described by movable chamber wall in the case of plug when the tensioner piston moves in piston hole
The hydraulic medium in hyperbaric chamber and provided, wherein compared with traditional independent hydraulic tensioner with free-piston,
Although shorter structure length can also realize the big stroke of the tensioner piston.The volume compensation mechanism it is movable
Chamber wall can also make the volume of a container and the position of the outside of the tensioner piston match and according to big tensioning
Stroke is used for the pretension of the drive chain of combustion motors.In addition to as chain tensioning device, this independent tensioning apparatus also can
It is enough to be used as belt stress in an identical manner.The independent tensioning apparatus by the present invention, once it is disposably with institute
Hydraulic medium is stated to fill in, then does not need outside supply and thus also without the machine oil loop for being connected to combustion motors
On.It is in the immigration motion of the tensioner piston in the bottom section of the piston hole in hyperbaric chamber under high pressure
The hydraulic medium is escaped to by the gap leakage between tensioner piston and piston hole or the aperture port
Escape in low-pressure chamber on the opposed side of tensioner piston in the piston hole or directly in the container.Because
The low-pressure chamber and the container are among fluidly connecting, so the volume increase of the hydraulic medium can pass through the body
Compensation mechanism is accumulated to be compensated, wherein the movable chamber wall correspondingly expands the volume of a container, without in institute
State and pressure increase is produced in low-pressure chamber or container.Kept to carry out the supply of the reliable fluid in the hyperbaric chamber and pressure,
The check-valves being directly connected with the container is provided with the bottom of the piston hole of the housing.
A kind of special design regulation of the independent tensioning apparatus, the aperture port are arranged in the housing
It can be closed in side wall and by means of the tensioner piston.Arrangement of the aperture port in the side wall of the housing is not only
Easy manufacture can be realized, and can be used being made from a variety of materials and special with special aperture port
Throttling inserts.Here, in order to which the immigration campaign in the final position of the tensioner piston to the tensioner piston is carried out by force
The buffering of change, the aperture port can be arranged near the bottom of the piston hole and can be by means of the tensioner pistons
To close.When the tensioner piston is deeply pushed into the piston hole, the tensioner piston closing is described in piston
The aperture port set in the side wall in hole, so as to be further pushed into by the tensioner piston towards the direction of the bottom of the piston hole
Shi Suoshu bufferings have been clearly not available raising.Therefore, the rattle of the drive chain can pass through the surplus of the tensioner piston
Remaining stress and more violent buffering are prevented by the gap leakage.
A kind of favourable design regulation, the aperture port are configured to hole, wherein the aperture port preferably has 0.1 to arrive
1.0mm diameter and 0.5 to 2.0mm length.In addition to being easily made the aperture port, preferably it is sized to
The damping characteristics are made suitably mutually to be adjusted with the corresponding structure of the tensioning apparatus.
For the big single resistance of immigration motion for preventing the tensioner piston, the piston hole and the tensioning
Gap leakage between the outer wall of piston is between 5 μm and 30 μm.During pressure increase in the hyperbaric chamber, hydraulic pressure
Medium with the volume flow of only very little by the gap leakage of the very narrow and very long ring-type between tensioner piston and piston hole come
Flowing, and the main volume stream of hydraulic medium then passes through the aperture port to flow.Even in the single resistance of the gap leakage
Depending on the hydraulic medium viscosity in the case of, the main volume stream through aperture is not dependent on due to the turbulent flow described
The viscosity of hydraulic medium.Correspondingly, when running temperature rises although the correlation of the viscosity and temperature of the hydraulic medium
The change of single resistance is produced not at the aperture., can be correspondingly such in a kind of tensioning apparatus for pressing the present invention
The combination being made up of very narrow and very long gap leakage with single aperture port is adjusted, thereby while the gap leakage
The single resistance depending on viscosity described in damping characteristics be also not substantially dependent upon viscosity on the whole.
A kind of suitable embodiment regulation, the movable chamber wall of the volume compensation mechanism are configured to flexible film
Piece.On the one hand such flexible diaphragm is impervious for the hydraulic medium, and on the other hand can be real
Now relative to easy sealing of the container to the movable chamber wall.Preferably, the flexible diaphragm being capable of nothing
Prestressed ground is arranged on the housing, for the hydraulic medium in the container to be kept substantially into Hydrostatic in operation
In the pressure of power.Here, the pressure of the hydrostatic of surrounding can be delivered evenly to the appearance by the flexible diaphragm
On hydraulic medium in device.Because the flexible diaphragm is as element that is flexible, being sealed relative to the housing
It is required that certain basic stress, thus the hydraulic pressure of pressure in the container and the outside of the container it is unequal but only
It is only substantially the same, and there is the pressure difference being between 0 and 0.2 bar in inactive state.Extraly, in the tensioning dress
In the operation put, pressure peak is produced due to certain inertia of the flexible diaphragm, the pressure peak especially exists
It may reach towards in the passage of the low-pressure chamber relative to the pressure of the hydrostatic between -0.2 to 1.2 bar
Value.
A kind of significant design regulation, the volume compensation mechanism have for the movable chamber wall is pre-
Spring-loaded compensating piston that is tight and resetting.Such spring-loaded compensating piston can easily adjust the container
In hydraulic medium content and suitably the volume of a container is defined.In addition, spring-loaded compensation is lived
Plug prevents that inadvertently either hydraulic medium inspiration is in fluid to the container or described and container by the air from environment
In low-pressure chamber among connection.In order to limit the stroke of the spring-loaded compensating piston and prevent the movable container
The too big loading of wall, the volume compensation mechanism can have the upper backstop for the spring-loaded compensating piston with
Backstop.
The movable chamber wall of the volume compensation mechanism is configured to flexible diaphragm in one embodiment, at this
It is described in the case of uneven loading is caused to the diaphragm due to the spring piston in kind embodiment
The pressure of the spring-loaded compensating piston can also be delivered evenly to the hydraulic pressure in the container by flexible diaphragm
On medium.It can be used to guide simultaneously during spring-loaded compensating piston pressure increase especially in the above-described container herein
And support the flexible diaphragm.
Another design regulation, the container construct in the housing of the tensioning apparatus at least in part.Except
Outside the reduction of the component of the tensioning apparatus, the structure of part or one of the container in the housing of the tensioning apparatus
The container can also be arranged along the flange face of the tensioning apparatus by making, and will can be existed in operation by the flange face
Due to throttling process, caused heat is given on adjacent motor component in the independent tensioning apparatus.
Be arranged in it is on the advancing side of tensioner piston, extend and in side from the housing through the low-pressure chamber
The piston rod out suitably regularly can be connected with the tensioner piston.The placement of the fixation of the piston rod or
Tensioner piston described in person is tapered into piston rod such case on the side of the low-pressure chamber first can be disposably in institute
State and hyperbaric chamber and low-pressure chamber are configured in piston hole and can be divided the hyperbaric chamber and the low-pressure chamber by tensioner piston
Open.In addition, remove and move into the piston hole in the tensioner piston or the piston rod is to the low-pressure chamber
When middle removal and immigration, the Volume Changes in the inside of the independent tensioning apparatus are reduced.Therefore, the piston rod is straight
Footpath can be the diameter of the piston hole 40% and 70% between, between preferably 50% and 60%.
In order to be carried out well to the low-pressure chamber relative to the piston hole of the housing and relative to the piston rod
Sealing, the housing can be provided with plug in side, wherein the piston rod extends through the plug.This can also be realized
Relatively small sealing surface between good guiding and piston rod and plug of the piston rod in the plug.Because
The piston rod moves relative to the plug when tensioner piston or piston rod are removed and moved into the housing, institute
To be advantageously provided shaft seal in the plug, the piston rod extends and the plug phase through the plug
The low-pressure chamber is sealed for the sealing surface.
In order to auxiliarily fill in the tensioning apparatus and can have to the high pressure chamber ventilated, the piston rod
Air vent, the air vent extend to the side of the piston rod using the hyperbaric chamber as starting point.In operation in institute
State on the side of piston rod with closing cock and pressure chamber come such air vent for closing for independent tensioning apparatus it is former
On then not necessarily, but can be constructed by the installation site of the tensioning apparatus and operation by usual open column shape
Tensioner piston forms air cushion in the hyperbaric chamber, easily the air cushion can be given to divulge information by air vent.It is in addition, described
Air vent can realize filling in for auxiliary, set if this fill in opening it is unavailable.
A kind of special design regulation, the effective compensation area of the movable chamber wall are more than the piston hole
Cross-sectional area subtract the piston rod cross-sectional area difference.The effective compensation area of the movable chamber wall is according to having
The corresponding big design of the area of the flexible shaping wall part of the diaphragm of elasticity can be relative to the tensioner piston
Or the stroke of piston rod reduces the necessary stroke of the movable chamber wall, and thus also reduce necessary use simultaneously
In the container volume of the independent tensioning apparatus.Here, the cross-sectional area correspondingly perpendicular to the tensioner piston or
The tensioning apparatus of piston rod is observed.
A kind of improvement project regulation as an alternative, the cross-sectional area of the piston rod is in the movable chamber wall
Effective compensation area 1 % and 50 % between, between preferably 3 % and 30 %, between especially 5 % and 15 %.With it is described
Necessary container volume is reduced to by the relatively small cross-sectional area of the proportional piston rod of compensation area of movable chamber wall
Bottom line, and thus proportionally will be described independent with the possible driving stroke of the tensioner piston or piston rod
The physical dimension of tensioning apparatus is reduced to bottom line.
By the spring-loaded compensating piston by the movable chamber wall pretension and when resetting, institute in operation
Stating low-pressure chamber also can be only -0.2 relative to the pressure difference of the pressure of the hydrostatic of environment with the hydraulic medium in container
Between bar and 2.0 bar.The small pressure difference of this pressure relative to hydrostatic can be according to the sealing of the shaft seal
Property and the spring-loaded compensating piston, the pressure that acts in the movable membrane wall come relatively easily relative to
Environment seals to the independent tensioning apparatus.Here, slight superpressure in operation generally be present.The low-pressure chamber with
Small negative pressure in container is only produced due to the inertia of the system when the tensioner piston is quickly moved out.Except this with
Outside, it is close between sealing, especially described piston rod and the plug for being relatively easy to for the independent tensioning apparatus
Envelope also includes following feasible program：Once the spring-loaded compensating piston is abutted in the upper or lower backstop, then right
Hydraulic medium content in the container compensates.Lacked due to abutting in the compensating piston on described or in lower backstop
During few volume compensation, the pressure in the hydraulic medium container substantially can more tempestuously fluctuate relative to atmospheric pressure and can
Hydraulic medium is drawn into the container by the seal between the piston rod and the housing or the plug or
Person provides from the container and is used as such for entering the too big or too low hydraulic medium content in the container
Row compensation.
In addition, the present invention relates to a kind of chain and sprocket driving device for combustion motors, the chain and sprocket driving device has a drive
Drive chain that movable sprocket and at least one driven sprocket are joined to one another and by one of embodiment described above institute
Independent tensioning apparatus stating, being tensioned the drive chain.By the independent construction of the tensioning apparatus, combustion motors
This chain and sprocket driving device need not be connected on the machine oil loop.Therefore, when the pressure in the machine oil loop declines
The reliable function of the tensioning apparatus can be ensured.Thus, produce in addition the machine oil loop driven by lubricating oil pump that
While the feasible program that combustion motors are lubricated.Independent tensioning apparatus in embodiment described above also can be with
Similar identical mode is used for the belt drive unit of combustion motors.
Brief description of the drawings
The present invention is explained in detail below by way of accompanying drawing.In accompanying drawing：
Fig. 1 shows the schematic diagram together with the independent tensioning apparatus by the present invention by chain and sprocket driving device of the invention,
Fig. 2 shows the profile of the perspective of the independent tensioning apparatus by the present invention,
Fig. 3 shows profile of other independent tensioning apparatus by the present invention together with the perspective of the container of hydrostatic,
And
Fig. 4 shows profile of another independent tensioning apparatus by the present invention together with the perspective of the container of hydrostatic.
Embodiment
Combustion motors figure 1 illustrates control chain and sprocket driving device 1 include two in top camshaft sprockets 2,
One crankshaft sprocket being below, 3, Quality Initiatives 4, one around their windings are used in the control Chain conveyer
The guide rail 5 guided in the tensioning side of device 1 to the Quality Initiative 4 and a tensioning arranged in a manner of it can swing
Rail 6, the tensioning rail extrude in the slack side of the control chain and sprocket driving device 1 towards the Quality Initiative 4.Herein by means of being fixed
The tensioning rail 6 is expressed on the Quality Initiative 4 by the independent tensioning apparatus 8 in combustion motors.Here, the independence
Tensioning apparatus 8 be configured to flange stretcher and be connected to by the flange of immobilising device 12 on motor component 7, referring also to
Fig. 2.Here, the piston rod 9 of the tensioning apparatus 8 is expressed to the pressing of the tensioning rail 6 arranged in a manner of it can swing
The Quality Initiative 4 is tensioned on region 10 and thus in the slack side of the control chain and sprocket driving device 1.
Fig. 2 through described come the profile of the independent tensioning apparatus 8 constructed by means of showing as flange stretcher
By the construction of the tensioning apparatus 8 of the present invention.The tensioning apparatus 8 includes housing 11, and the housing is configured to hole-and milling part, institute
Hole-and milling part are stated by multiple immobilising devices 12 to be fixed on motor component 7.The housing 11 has the piston hole of column
13, the tensioner piston 14 described in the piston hole together with the tensioner piston 14 along tension direction stretch out piston rod 9 with
The mode that can be moved is guided.It is as illustrated in fig. 1 like that, the piston rod 9 on the end of advancing side
End plug 15 is pressed on the drive area 10 of the tensioning rail 6, for by means of the tensioning rail 6 that the Quality Initiative 4 is pre-
Tightly.
The tensioner piston 14 is configured to hollow piston and has compression spring 16 inside it, and the compression spring is towards institute
The side 17 for stating the tensioner piston 14 of open column shape extrudes and along tension direction by the pretension of tensioner piston 14.Described
The piston rod 9 is connected to along tension direction on side 17, wherein being provided with hydraulic fluid passage in the piston rod 9
18, the hydraulic fluid passage is by the closing of end plug 15.Check-valves 19 is arranged on the bottom of the piston hole 13, should be only
Return valve and it is extruded in the valve seat of the bottom of the piston hole 13 by the compression spring 16.
In the piston hole 13, the structure between the bottom of the piston hole 13 and the tensioner piston 14 of the open column shape
Hyperbaric chamber 20 has been made, hydraulic medium is supplied to the hyperbaric chamber by the check-valves 19.In running status, with certain
Operating pressure under hydraulic medium load the hyperbaric chamber 20, for being moved into the piston hole in the tensioner piston 14
The buffering of immigration motion progress hydraulic pressure that can be to the tensioner piston 14 when in 13.Beyond the tensioner piston 14,
There is low-pressure chamber 21 on the unlimited end of the advancing side of the piston hole 13, there is with relative in the low-pressure chamber
In the hydraulic medium of the low superpressure of atmospheric pressure.Plug is provided with the unlimited end of the advancing side of the piston hole 13
22, the shaft seal 23 of ring-type is arranged in the plug and the piston rod 9 passes through the plug 22 from the low pressure
Stretch out in room 21, wherein the shaft seal 23 relative to the piston rod 9 to stretch out through plug 22 to the low pressure
Room 21 is sealed.The low-pressure chamber 21 is by interface channel 24 with being used for the hydraulic medium, being typically affiliated burning horse
The container 25 of the machine oil reached is related to fluidly（fluidmäßig）Connection.The hydraulic medium container 25 is along the housing 11
Flange region 26 extends always from the interface channel 24 on the end of the advancing side in housing 11 towards the low-pressure chamber 21
To the housing bottom 27, the fluid input unit 28 towards the check-valves 19 is provided with the housing bottom.Described
In the removal campaign of tensioner piston 14, liquid is supplied to the hyperbaric chamber 20 by the fluid input unit 28 and the check-valves 19
Medium is pressed, wherein the check-valves 19 only allows the hydraulic medium to be flowed through towards the direction in the hyperbaric chamber 20 and towards opposite
Direction then close the valve passage, for the Vibrant buffer for the tensioning apparatus 8 can be realized.
On the housing bottom 27, volume compensation mechanism 29 is provided with order to limit the hydraulic medium container 25.
Here, in this embodiment, the volume compensation mechanism 29 is configured to single component, the single component is installed to
On the housing 11, for constructing the container 25, but the volume compensation mechanism 29 can also be embodied as the housing 11
A part.The volume compensation mechanism 29 by one side unlimited hollow body 30 form, the matrix of preferably open column shape is formed,
Described matrix is sized and shaped according to the housing bottom 27.Extend in the range of the opening of the hollow body 30
Flexible diaphragm 31, the flexible diaphragm form the movable chamber wall of the volume compensation mechanism 29 while also existing
Sealing is produced between the hollow body 30 and the housing bottom 27.
In embodiment tensioning apparatus, shown in figure 2 for pressing the present invention, the flexible diaphragm 31
It is placed on the side backwards to the container 25 on the compensating piston 32, the compensating piston prevents the flexible diaphragm
31 unintentionally projection and unilateral overload.Correspondingly, the flexible diaphragm 31 can by very flexible material and
It is made with less wall thickness.The compensating piston 32 is pre- by the direction of helical spring 33 towards the flexible diaphragm 31
For promoting the movable chamber wall, namely described when the volume of hydraulic medium tight and in the container 25 reduces
Flexible diaphragm 31, and thus it is also used for maintaining the hydraulic medium pressure in the container 25, the hydraulic pressure in the container
Pressure medium basically by the shaft seal 23, relative to the piston rod 9 depending on the permeability of pressure come it is true
It is fixed.The compensating piston 32 is guided in the sleeve 34 of the hollow body 30, wherein the sleeve 34 and the mushroom
The compensating piston 32 of shape forms lower backstop 35 and upper backstop 36 together.
In the region in the hyperbaric chamber 20, aperture port 37 is provided with the side wall of the piston hole 13, at described
Tight piston 14 can be from the aperture port directly from the height to hydraulic medium described in the immigration campaign in the piston hole 13
Pressure chamber 20 is escaped in the hydraulic medium container 25, for targetedly the immigration to the tensioner piston 14 to be transported like this
Move into row buffering.
Figure 3 illustrates another tensioning apparatus 8 by the present invention, the tensioning apparatus and implementation shown in figure 2
Mode is mainly distinguished by not preloaded flexible diaphragm 31, at the hydraulic medium in the container 25
Under the pressure of substantially hydrostatic.Tensioning apparatus 8 in Fig. 3 includes a housing with the piston hole 13 of column
11, the piston rod 9 that the tensioner piston 14 is stretched out along with tension direction is in a manner of it can move in the piston hole
Guided.The tensioner piston 14 has compression spring 16, of the compression spring towards the open column shape inside it
The side 17 of tight piston 14 extrudes and along tension direction by the pretension of tensioner piston 14.On the side 17 along
Tight direction is connected to the piston rod 9, wherein being provided with the hydraulic pressure being used for the hyperbaric chamber 20 ventilation in the piston rod 9
Medium channel 18, the hydraulic fluid passage is by the closing of end plug 15.End plug 15 on the end of the advancing side of the piston rod 9
It is placed in operation on the area pressed 10 of the tensioning rail 6, for by means of the tensioning rail 6 that the Quality Initiative 4 is pre-
Tightly.Check-valves 19 is arranged on the bottom of the piston hole 13, the check-valves is extruded to it by the compression spring 16
Hydraulic medium is supplied in valve seat in the bottom of the piston hole 13 and to the hyperbaric chamber 20.
Beyond the tensioner piston 14, there is low on the unlimited end of the advancing side of the piston hole 13
Pressure chamber 21, hydraulic medium is when the tensioner piston 14 is moved into the piston hole 13 by tensioner piston 14 and piston hole 13
Between gap leakage 38 be flowed into the low-pressure chamber, for produce for the tensioner piston 14 immigration move hydraulic pressure
Buffering.Plug 22 is provided with the unlimited end of the advancing side of the piston hole 13, ring is arranged in the plug
The shaft seal 23 and the piston rod 9 of shape stretch out through the plug from the low-pressure chamber 21, wherein the bar is close
Sealing 23 seals relative to described through the piston rod 9 that plug 22 stretches out to the low-pressure chamber 21.The low-pressure chamber
21 are connected by interface channel 24 with the container 25 for hydraulic medium, so as to which pressure balance occur herein.
For this tensioning apparatus 8, in order to limit the hydraulic medium container 25 again on the housing bottom 27
There is provided volume compensation mechanism 29, the volume compensation mechanism is installed on the housing 11 as single component.The body
Product compensation mechanism 29 is made up of the unlimited hollow body 30 of one side, the preferably flange part of arch is formed, the hollow body according to
The housing bottom 27 is sized and shaped.Flexible diaphragm is extend in the range of the opening of the hollow body 30
31, the flexible diaphragm forms the movable chamber wall of the volume compensation mechanism 29 while also in the hollow body 30
Sealing is produced between the housing bottom 27.In order to carry out pressure balance, the section of the arch of the hollow body 30 with environment
Provided with hole（It is not shown）, so as to there is the environmental pressure of air between hollow body 30 and flexible diaphragm 31.
The section of the arch of the hollow body 30 as the lower backstop 35 for the flexible diaphragm 31, is used for simultaneously
Prevent excessively violent or uneven expansion and the overload of the flexible diaphragm 31.In the flexible diaphragm
31 when abutting on the section of the arch of the hollow body 30, and the volume of the container 25 is maximum.In the container 25
Hydraulic medium volume due to the tensioner piston 14 removes from the piston hole 13 and when reducing, the flexible film
The direction of piece 31 towards the housing bottom 27 is arched upward, and thus the volume of the container 25 reduces.In this case, there is air
The air of pressure passes through the hole in the hollow body 30（It is not shown）The section to arch upward for flowing to the hollow body 30 has with described
In region between the diaphragm 31 of elasticity, the hydraulic medium pressure in the container 25 is thus kept substantially hydrostatic
Pressure on.
Fig. 4 shows the construction of another tensioning apparatus 8 by the present invention, and the tensioning apparatus has bullet with not preloaded
The diaphragm 31 of property.In Fig. 4 as flange stretcher come on the section of the independent tensioning apparatus 8 constructed as can be seen that institute
Flexible diaphragm 31 and the affiliated container 25 for hydraulic medium are stated herein not relative to the hyperbaric chamber 20, piston
Hole 13 and tensioner piston 14 serially dispose（aufrichten）, but in side arrangement on the housing 11.The tensioning
Device 8 includes housing 11 again, and the housing has the piston hole 13 of column, obtained in a manner of it can move in the piston hole 13
To guiding tensioner piston 14 together with the tensioner piston 14 along tension direction stretch out piston rod 9.The open tubular column
The tensioner piston 14 of shape has a compression spring 16 inside it, and the compression spring is pre- by the tensioner piston 14 along tension direction
Tightly.The piston rod 9 is connected to along tension direction on the side 17, is used for wherein being provided with the piston rod 9
The hydraulic fluid passage 18 being aerated to the hyperbaric chamber 20, the hydraulic fluid passage is by the closing of end plug 15.
Check-valves 19 is arranged on the bottom of the piston hole 13, the check-valves is extruded to it described by the compression spring 16
Hydraulic medium is supplied in valve seat in the bottom of piston hole 13 and to the hyperbaric chamber 20.
For this tensioning apparatus 8, low-pressure chamber is also provided between the piston hole 13 and the piston rod 9
21, when the tensioner piston 14 is moved into the piston hole 13, the hydraulic medium passes through tensioner piston 14 and piston hole 13
Between gap leakage 38 be flowed into the low-pressure chamber, for the immigration fortune to the tensioner piston 14 in a hydrodynamic manner
Move into row buffering.Plug 22 is provided with the unlimited end of the advancing side of the piston hole 13, is arranged in the plug
The shaft seal 23 and the piston rod 9 of ring-type stretch out through the plug from the low-pressure chamber 21, wherein described
Shaft seal 23 seals relative to described through the piston rod 9 that plug 22 stretches out to the low-pressure chamber 21.It is described low
Pressure chamber 21 is connected by interface channel 24 with the container 25 for hydraulic medium, so as to which pressure balance occur herein.
Compared with the embodiment shown in figs 2 and 3, for this tensioning apparatus 8, the volume compensation mechanism
29 are not arranged on the housing bottom 27, but in side arrangement with the housing 11.Herein, it is described to be used for
The volume compensation mechanism 29 being defined to hydraulic medium container 25 is installed on the housing 11 as single component, and
And the scope of the flange part of arch and the opening in the hollow body 30 is made up of, is preferably the unlimited hollow body 30 of one side
The flexible diaphragm 31 of interior extension is formed.The flexible diaphragm 31 forms the movable of the volume compensation mechanism 29
Chamber wall to the container 25 between the hollow body 30 and the side wall of the housing 11 while seal.In order to environment
Pressure balance is carried out, the section of the arch of the hollow body 30 is provided with hole（It is not shown）, so as to hollow body 30 with it is flexible
There is the environmental pressure of air between diaphragm 31.
The section of the arch of the hollow body 30 as the lower backstop 35 for the flexible diaphragm 31, is used for simultaneously
Prevent excessively violent or uneven expansion and the overload of the flexible diaphragm 31.In the flexible diaphragm 31
When abutting on the section of the arch of the hollow body 30, the volume of the container 25 is maximum.In the container 25
The volume of hydraulic medium due to the tensioner piston 14 removes from the piston hole 13 and when reducing, the flexible diaphragm
31 arch upward towards the direction of the side wall of the housing 11, and thus the volume of the container 25 reduces.In this case, there is air
The air of pressure passes through the hole in the hollow body 30（It is not shown）The section to arch upward for flowing to the hollow body 30 has with described
In region between the diaphragm 31 of elasticity, the hydraulic medium pressure in the container 25 is thus kept substantially hydrostatic
Pressure on.
In independent embodiment tensioning apparatus 8, being shown in Fig. 2 to Fig. 4 by the present invention, in the high pressure
In the region of room 20 in the side wall of the piston hole 13 except the gap leakage 38 between tensioner piston 14 and piston hole 13 it
Single aperture port 37 is also provided with outside, in the tensioner piston 14 to hydraulic pressure described in the immigration campaign in the piston hole 13
Medium can be directly escaped in the hydraulic medium container 25 from the aperture port 37 from the hyperbaric chamber 20.It is described extra
Single aperture port 37- can not only be configured to simple hole（It is not shown）And it can be configured to be made up of special material
Inserts and hole provided with accurately size design-only very narrow gap leakage 38 can be set.Very narrow gap leakage
38 reduce the temperature of the buffering for the hydraulic pressure that the immigration for the tensioner piston 14 is moved with reference to the extra aperture port 37
Correlation and thus, it is possible to realize for the buffering targetedly adjust be significantly improved.
The mode of action and working method of independent tensioning apparatus 8 described above are explained in detail below.
It is preferred for by independent embodiment tensioning apparatus 8, being shown herein in Fig. 2 to Fig. 4 of the present invention
The chain and sprocket driving device 1 of combustion motors.In operation, the tensioner piston 14 of the tensioning apparatus 8 is by means of the compression spring 16
Prestressing force extruded by the end of the piston rod 9 and the piston rod 9 plug 15 towards the area pressed 10 of tensioning rail 6, be used for
The drive chain 4 of chain and sprocket driving device 1 is tensioned.In the tensioning apparatus 8 as in the embodiment for belt stress, the work
Stopper rod 9 is expressed in drive belt by corresponding pressing roller.In the case of the use independently of the tensioning apparatus 8, in institute
Hydraulic medium is stated when tensioner piston 14 disengages from the piston hole 13 from the container 25 by the housing bottom 27
Fluid input unit 28 and the check-valves 19 flow in the hyperbaric chamber 20, for fill up the hyperbaric chamber 20, by institute
The volume stated the disengagement of tensioner piston 14 and expanded.
Such as in the tensioning rail 6 or the oscillating movement of pressing roller pressure pass through end plug 15 and work
Stopper rod 9 carries out the tensioner piston 14 to the immigration campaign in the hyperbaric chamber 20 to be applied to when on the tensioner piston 14,
This immigration motion is buffered by the hydraulic fluid in the hyperbaric chamber 20.Because combustion motors, usual use
Making the machine oil of hydraulic medium can not be back in the container 25 by the check-valves 19, so the shifting of the tensioner piston 14
Enter the Fluid pressure that motion improves the hydraulic medium in the hyperbaric chamber 20.During pressure rise in the hyperbaric chamber 20,
The hydraulic medium passes through very narrow and very long between the outer wall of the piston hole 13 and the tensioner piston 14 of the open column shape
The gap leakage 38 of ring-type flow, the gap leakage be only in shown embodiment 5 μm with 30 μm it
Between.This very narrow and very long gap leakage 38 by very little, institute flowed to from the hyperbaric chamber 20 by the gap leakage 38
The volume flow in low-pressure chamber 21 is stated to produce the very high resistance for the immigration motion for preventing the tensioner piston 14 and thus produce
Raw buffering strongly.In addition, the buffering carried out by the gap leakage 38 between tensioner piston 14 and piston hole 13
It is very dependent on the viscosity of the hydraulic medium and thus also depends on the temperature of the hydraulic medium.
In order to carry out the adjustment of hydraulic pressure and to the tensioning apparatus 8 by the present invention in order to obtain as far as possible not with improvement
Depending on the buffering of viscosity, extra single aperture is provided with the side wall of the piston hole 13 in the hyperbaric chamber 20
Mouthfuls 37, hydraulic medium can be with turbulent flow from the hyperbaric chamber by the aperture port in the immigration campaign of the tensioner piston 14
20 directly escape in the hydraulic medium container 25.By the suitable size design of the aperture port 37 and gap leakage,
The damping characteristics of the independent tensioning apparatus 8 by the present invention can be realized, the damping characteristics are mainly by through described
The turbulent flow of aperture port 37 influences and is thus not substantially dependent upon the viscosity of the hydraulic medium.It is therefore, as shown here
The aperture port 37 in the embodiment gone out is configured with 0.1 to 1.0 mm in the case of 0.5 to 2.0 mm length
Diameter hole.
In addition, the aperture port 37 has in the side wall of the piston hole 13 and relative to the bottom of the piston hole 13
The arrangement at one interval can realize the so-called end position buffering for the tensioner piston 14.Once the tensioner piston 14
The crucial end position point that a position by the aperture port 37 determines, the tensioning are moved past in motion is moved into
The outer wall of piston 14 just covers the aperture port 37, so as to further in the tensioner piston 14 to the piston hole 13
Also only the strong buffering of the gap leakage 38 between piston hole 13 and tensioner piston 14 acts as in immigration motion
With and the tensioner piston 14 further immigration campaign by more violent buffering.Thus, in the tensioner piston 14
Immigration state in especially weaken rattle or the impact of the drive chain 4.
In the tensioner piston 14 into the immigration campaign in the piston hole 13, the hydraulic medium is from the hyperbaric chamber
20 are flowed in the low-pressure chamber 21 by the gap leakage 38 between piston hole 13 and tensioner piston 14, and from there through institute
Interface channel 24 is stated to flow in the hydraulic medium container 25, and the single aperture in the side wall for passing through the piston hole 13
Mouth 37 is directly flowed in the hydraulic medium container 25 from the hyperbaric chamber 20, thus the body of the hydraulic medium in the container 25
Product is improved.The volume being improved of hydraulic medium in the container 25 is expressed on the flexible diaphragm 31,
And make the movable chamber wall may overcome compensating piston 32 it is prestressed in the case of move outwardly to the volume
In the hollow body 30 of compensation mechanism 29.Because the cross-sectional area of the piston rod 9 in the housing 11 for being moved into tensioning apparatus 8 is small
In the cross-sectional area of the tensioner piston 14 being moved into hyperbaric chamber 20, so the movable appearance of the volume compensation mechanism 29
Wall only have to compensate the volume squeezed by the piston rod 9, because described low when the hyperbaric chamber 20 reduces
The volume of pressure chamber 21 is improved simultaneously, and the cross-sectional area of the piston rod 9 is subtracted with the cross-sectional area of the piston hole 13
The cross-sectional area of poor divided by described piston hole 13 is proportional.Correspondingly, the movable chamber wall or flexible diaphragm 31
Relatively small stroke can realize the relatively large stroke of motion of the piston rod 9 or tensioner piston 14.This ratio with
The increase of the effective compensation area of the movable chamber wall or flexible diaphragm 31 and improved.In Fig. 2 and Fig. 3
In, by between the bottom of the piston hole 13 and tensioner piston 14 and between the tensioner piston 14 and the plug 22
Interval arrow depicts the whole stroke of motion of the tensioner piston 14.
Under possessing by independent tensioning apparatus 8, the shown in figure 2 preloaded volume compensation mechanism 29 of the present invention
Backstop 35 and upper backstop 36, the upper backstop and the lower backstop prevent the too high of the flexible diaphragm 31 from adding together
Carry.In addition, the backstop 35,36 adjusts the hydraulic medium content of the container 25.If the hydraulic pressure is situated between in operation
The volume of matter declines due to loss, and the flexible diaphragm 13 just may be compensated no longer to Volume Changes completely, from
And described in the removal motion of the tensioner piston 14 in hydraulic medium container 25 and in coupled low-pressure chamber 21
Pressure drop to environmental pressure, under usual atmospheric pressure, then the independent tensioning apparatus 8 can just seal in the bar
Hydraulic medium is drawn into the low-pressure chamber 21 between part 23 and the piston rod 9 and the hydraulic medium to lacking is mended
Repay.But if the too many hydraulic medium of the inspiration of the tensioning apparatus 8, then the hydraulic pressure in the container 25 and low-pressure chamber 21 is situated between
The pressure of matter just substantially increases relative to environmental pressure when the compensating piston 25 is collided in the lower backstop 35 and liquid
Pressure medium can be spilt between piston rod 9 and shaft seal 23.
It is independent by the present invention according to Fig. 3 and Fig. 4 compared with preloaded volume compensation mechanism 29 shown in figure 2
Tensioning apparatus 8 there is not preloaded flexible diaphragm 31, the flexible diaphragm is by means of the quilt of hollow body 30
It is fixed on the housing 11 and the container 25 is sealed.If in operation in the removal of the tensioner piston 14
The volume of hydraulic medium in container 25 described in motion rises, and the flexible diaphragm 31 is just towards the arch of the hollow body 30
The direction of the section of shape is arched upward, wherein the pressure in the hydraulic medium container 25 unchangeably remains essentially in hydrostatic
In pressure, the pressure of the hydrostatic is by the atmospheric pressure between hollow body 30 and flexible diaphragm 31 come previously given.
Here, the pressure of the hydrostatic of surrounding can be delivered evenly to the container by the not preloaded flexible diaphragm
In hydraulic medium on.Because the flexible diaphragm is as the flexible component requirements sealed relative to the housing
Certain basic stress and there is certain inertia, so the pressure in the container is optional and the outside of the container
Atmospheric pressure is equal but only substantially the same, and can have the pressure being between 0 and 0.2 bar in inactive state
Difference.Extraly, it is used in the operation of the tensioning apparatus due to the profile of the flexible diaphragm and the container 25
Property and produce pressure peak, especially described in the passage towards the low-pressure chamber pressure spike plant relative to the hydrostatic
Pressure is likely to be breached the value between -0.2 to 1.2 bar.
The removal campaign from the independent tensioning apparatus 8 out of the tensioner piston 14 or piston rod 9 passes through
The prestressing force of compression spring 16 in the hyperbaric chamber 20 is carried out.Once no longer applied on the end of the piston rod 9 plug 15
Add outside power, the compression spring 16 just by the tensioner piston 14 together with the piston rod 9 towards the piston hole 13
The direction of unlimited end, namely extruded along tension direction.Due to the removal campaign of the tensioner piston 14, in the height
The interior drops of hydraulic medium described in pressure chamber 20, so as to the piston hole 13 bottom on check-valves 19 can open and
The hydraulic medium can be flowed into the hyperbaric chamber 20 from the container 25.The tensioner piston 14 or piston rod 9
Removal campaign therefore carried out in the case of no buffering.
When row buffering is entered in the immigration campaign to the tensioner piston 14, by the pressure drop in piston hole 13 with
Heat is produced at gap leakage 38 between tensioner piston 14 and at extra aperture port 37, the heat is given to the liquid
Press on the component around medium and the tensioning apparatus 8.It is whole independent in the buffering strengthened to chain and sprocket driving device
The heating with the hydraulic medium of tensioning apparatus 8.Because the hydraulic pressure described in the current design structure of independent tensioning apparatus 8
Being mostly in the flange region 26 of the housing 11 for media Containers 25, it is described, due to moving into the slow of motion for described
Punching and caused heat can be discharged to the motor by the hydraulic medium and the big contact surface of the flange region 26
Component 7.
Reference numerals list：
1 control chain drive mechanism
2 camshaft sprockets
3 crankshaft sprockets
4 Quality Initiatives
5 guide rails
6 tensioning rails
7 motor components
8 independent tensioning apparatus
9 piston rods
10 area presseds
11 housings
12 immobilising devices
13 piston holes
14 tensioner pistons
Fill in 15 ends
16 compression springs
17 sides
18 hydraulic fluid passages
19 check-valves
20 hyperbaric chambers
21 low-pressure chambers
22 plugs
23 shaft seals
24 interface channels
25 containers
26 flange regions
27 housing bottoms
28 fluid input units
29 volume compensation mechanisms
30 hollow bodies
31 flexible diaphragms
32 compensating pistons
33 helical springs
34 sleeves
35 times backstops
Backstop on 36
37 aperture ports
38 gap leakages
Claims (15)
1. in particular for the drive chain of combustion motors（4）Independent tensioning apparatus（8）, the independent tensioning apparatus
- there is housing（11）, can be in a manner of mobile in the housing（11）Piston hole（13）In the tensioning that is guided
Piston（14）, wherein in the piston hole（13）In construct hyperbaric chamber for hydraulic medium（20）And low-pressure chamber（21）And
The tensioner piston（14）By the hyperbaric chamber（20）With the low-pressure chamber（21）Separate,
- have be arranged in the tensioner piston（14）Advancing side on piston rod（9）, the piston rod（9）Through described low
Pressure chamber（21）To extend and in side from the housing（11）In out,
- there is the container for being used for the hydraulic medium（25）, wherein the container（25）With the low-pressure chamber（21）In fluid
Among connection and in the hyperbaric chamber（20）With the container（25）Between be provided with check-valves（19）,
- have for the container（25）The volume compensation mechanism that is adapted to of volume（29）, the volume compensation mechanism
（29）Constructed in the form of movable chamber wall, and
- have be directed to the tensioner piston（14）To piston hole（13）In immigration motion buffer gear,
Characterized in that, the buffer gear includes being in the tensioner piston（14）With the piston hole（13）Between leakage
Gap（38）With in the hyperbaric chamber（20）With the container（25）Between single aperture port（37）.
2. the independent tensioning apparatus as described in claim 1（8）,
Characterized in that, the aperture port（37）It is arranged in the housing（11）Side wall in and can be by means of the tensioning
Piston（14）To close.
3. the independent tensioning apparatus as described in claim 1 or 2（8）,
Characterized in that, the aperture port（37）Hole is configured to, the hole has 0.1 to 1.0 mm diameter and 0.5 to 2.0
Mm length.
4. the independent tensioning apparatus as any one of Claim 1-3（8）,
Characterized in that, the tensioner piston（14）With the piston hole（13）Between gap leakage（38）Width at 5 μm
Between 30 μm.
5. the independent tensioning apparatus as any one of claim 1 to 4（8）,
Characterized in that, the volume compensation mechanism（29）Movable chamber wall be configured to flexible diaphragm（31）.
6. the independent tensioning apparatus as described in claim 5（8）,
Characterized in that, the flexible diaphragm（31）The housing is arranged in without prestressed ground（11）On, for running
It is middle by the container（25）In hydraulic medium remain to substantially in the pressure of hydrostatic.
7. the independent tensioning apparatus as any one of claim 1 to 5（8）,
Characterized in that, the volume compensation mechanism（29）With for by the movable chamber wall pretension and reset bullet
The compensating piston of spring loading（32）.
8. the independent tensioning apparatus as described in claim 7（8）,
Characterized in that, the volume compensation mechanism（29）With for the spring-loaded compensating piston（32）Upper backstop
（36）With lower backstop（35）.
9. the independent tensioning apparatus as described in claim 7 or 8（8）,
Characterized in that, the low-pressure chamber（21）With container（25）In hydraulic medium relative to the pressure difference of atmospheric pressure -0.2
Between bar and 2.0 bar.
10. the independent tensioning apparatus as any one of claim 1 to 9（8）,
Characterized in that, the piston rod（9）Regularly with the tensioner piston（14）It is connected.
11. the independent tensioning apparatus as any one of claim 1 to 10（8）,
Characterized in that, the piston rod（9）Diameter in the piston hole（13）Diameter 40 % and 70 % between, preferably
Between 50 % and 60 %.
12. the independent tensioning apparatus as any one of claim 1 to 11（8）,
Characterized in that, the piston rod（9）With air vent, wherein the air vent is from the hyperbaric chamber（20）Extend always
To the piston rod（9）Side.
13. the independent tensioning apparatus as any one of claim 1 to 12（8）,
Characterized in that, the effective compensation area of the movable chamber wall is more than the piston hole（13）Cross-sectional area subtract
Remove the piston rod（9）Cross-sectional area difference.
14. the independent tensioning apparatus as any one of claim 1 to 13（8）,
Characterized in that, the piston rod（9）Cross-sectional area the movable chamber wall effective compensation area 1%
With 50% between, between preferably 3% and 30%, between especially 5% and 15%.
15. the chain and sprocket driving device for combustion motors（1）, the chain and sprocket driving device has drive sprocket（3）, it is at least one driven
Sprocket wheel（2）, by the drive sprocket（3）With at least one driven sprocket（2）The drive chain being joined to one another（4）And
As any one of claim 1 to 14 by the drive chain（4）The independent tensioning apparatus of tensioning（8）.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015001623.7A DE102015001623A1 (en) | 2015-02-09 | 2015-02-09 | Self-sufficient tensioning device |
| DE102015001623.7 | 2015-02-09 | ||
| PCT/EP2016/000211 WO2016128128A1 (en) | 2015-02-09 | 2016-02-08 | Autonomous clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107743558A true CN107743558A (en) | 2018-02-27 |
| CN107743558B CN107743558B (en) | 2020-09-29 |
Family
ID=55315385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680019506.4A Active CN107743558B (en) | 2015-02-09 | 2016-02-08 | Independent tensioning device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN107743558B (en) |
| DE (1) | DE102015001623A1 (en) |
| WO (1) | WO2016128128A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112400073A (en) * | 2018-06-29 | 2021-02-23 | 哈金森公司 | Belt tensioner |
| CN115076312A (en) * | 2022-06-23 | 2022-09-20 | 杭州东华汽车动力科技有限公司 | Hydraulic tensioner with internal circulation structure |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017104533B4 (en) | 2017-03-03 | 2021-11-04 | Volkswagen Aktiengesellschaft | Chain tensioner for a chain of a timing drive of an internal combustion engine |
| JP6970342B2 (en) * | 2018-02-16 | 2021-11-24 | 株式会社椿本チエイン | Chain tensioner |
| FR3120673B1 (en) * | 2021-03-09 | 2023-06-02 | Psa Automobiles Sa | INTERNAL COMBUSTION ENGINE CHAIN TENSIONER |
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| DE3832512C1 (en) * | 1988-09-24 | 1990-04-26 | Bayerische Motoren Werke Ag, 8000 Muenchen, De | Tensioning device for an endless flexible transmission |
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| DE102011079188A1 (en) * | 2011-07-14 | 2013-01-17 | Schaeffler Technologies AG & Co. KG | Mechanical clamping system for clamping e.g. driving chain in vehicle, has pressure and reservoir chambers connected together over through-holes, piston supported in receiving chamber, where reservoir chamber is expandable against force |
| CN203488219U (en) * | 2013-09-30 | 2014-03-19 | 安徽江淮汽车股份有限公司 | Engine chain system |
| WO2014187455A1 (en) * | 2013-05-23 | 2014-11-27 | Schaeffler Technologies Gmbh & Co. Kg | Chain tensioner having an externally resettable double-acting latching system and a mechanical return stroke limitation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6240357U (en) * | 1985-08-30 | 1987-03-10 | ||
| JPH01121755U (en) * | 1988-02-15 | 1989-08-17 | ||
| JPH0454356Y2 (en) * | 1988-07-14 | 1992-12-21 | ||
| JPH07280050A (en) * | 1994-04-01 | 1995-10-27 | Tsubakimoto Chain Co | Structure for preventing abnormal deformation of diaphragm for oil sealed type tensioner |
| DE102008016654B4 (en) | 2008-04-01 | 2019-02-21 | Elringklinger Ag | Self-sufficient chain tensioner with double sealing ring |
-
2015
- 2015-02-09 DE DE102015001623.7A patent/DE102015001623A1/en not_active Ceased
-
2016
- 2016-02-08 WO PCT/EP2016/000211 patent/WO2016128128A1/en active Application Filing
- 2016-02-08 CN CN201680019506.4A patent/CN107743558B/en active Active
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| EP0212119A2 (en) * | 1985-08-30 | 1987-03-04 | Tsubakimoto Chain Co. | Tensioner for toothed drive belts |
| US4708696A (en) * | 1985-08-30 | 1987-11-24 | Tsubakimoto Chain Co. | Tensioner for toothed drive belts |
| US4708696B1 (en) * | 1985-08-30 | 1990-05-29 | Tsubakimoto Chain Co | |
| DE3832512C1 (en) * | 1988-09-24 | 1990-04-26 | Bayerische Motoren Werke Ag, 8000 Muenchen, De | Tensioning device for an endless flexible transmission |
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| US20010007840A1 (en) * | 2000-01-12 | 2001-07-12 | Katsuya Nakakubo | Closed hydraulic tensioner |
| DE102011079188A1 (en) * | 2011-07-14 | 2013-01-17 | Schaeffler Technologies AG & Co. KG | Mechanical clamping system for clamping e.g. driving chain in vehicle, has pressure and reservoir chambers connected together over through-holes, piston supported in receiving chamber, where reservoir chamber is expandable against force |
| WO2014187455A1 (en) * | 2013-05-23 | 2014-11-27 | Schaeffler Technologies Gmbh & Co. Kg | Chain tensioner having an externally resettable double-acting latching system and a mechanical return stroke limitation |
| CN203488219U (en) * | 2013-09-30 | 2014-03-19 | 安徽江淮汽车股份有限公司 | Engine chain system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112400073A (en) * | 2018-06-29 | 2021-02-23 | 哈金森公司 | Belt tensioner |
| CN115076312A (en) * | 2022-06-23 | 2022-09-20 | 杭州东华汽车动力科技有限公司 | Hydraulic tensioner with internal circulation structure |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015001623A1 (en) | 2016-08-11 |
| WO2016128128A1 (en) | 2016-08-18 |
| CN107743558B (en) | 2020-09-29 |
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