CN109210160B - Train tensioning apparatus and train - Google Patents
Train tensioning apparatus and train Download PDFInfo
- Publication number
- CN109210160B CN109210160B CN201811312685.8A CN201811312685A CN109210160B CN 109210160 B CN109210160 B CN 109210160B CN 201811312685 A CN201811312685 A CN 201811312685A CN 109210160 B CN109210160 B CN 109210160B
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- rotatable parts
- train
- spring
- bracket
- tensioning apparatus
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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
- F16H7/14—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of a driving or driven pulley
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- 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 proposes a kind of train tensioning apparatus and train.The train tensioning apparatus includes: the first rotatable parts, is used to be sequentially connected via belt and the second rotatable parts, to be made of a part of train or train the first rotatable parts, belt and the second rotatable parts;And elastomeric element, elastomeric element is installed between bracket and the first rotatable parts, elastomeric element exerts a force to the first rotatable parts, tend to that the first rotatable parts edge is made to move the direction of belt tension far from the second rotatable parts, elastomeric element includes spring, and the elastic force direction of spring and the line direction of the center of rotation of the first rotatable parts and the center of rotation of the second rotatable parts are substantially parallel.It can be exerted a force by lesser elastomeric element to the first rotatable parts, it is easy for that the first rotatable parts edge is made to move the direction of belt tension far from the second transmission parts by lesser power, belt tension can be made obvious, so that the structure simplification of train tensioning apparatus, weight saving, cost reduction.
Description
Technical field
The present invention relates to the transmission system of train, in particular to a kind of train tensioning apparatus and including the train tensioning apparatus
Train.
Background technique
Now with the fast development of aero-engine, there is higher want for the engine performance of such as four-cylinder
It asks, has not only wished that energy consumption is lower, performance is more preferable, but also wish that cost is lower.
It is existing that for example using in the transmission system of Timing Belt, automatic takeup passes through tensioning wheel tightening belt,
Structure is complicated, and due to designing the restriction with fabrication process condition, automatic takeup the space occupied is larger, cost is also higher.
As shown in Figure 1, Chinese invention CN201810843548.0 discloses a kind of belt from tensioning apparatus comprising cylinder
10, motor 20, motor supporting plate 30, spring 40 and screw rod 50.Motor 20 is fixedly connected on motor supporting plate 30, and motor supporting plate 30 can pivot
It is connected to cylinder 10 with turning, while the one end of motor supporting plate 30 is connected to cylinder 10 by screw rod 50, spring 40 is arranged in spiral shell
On bar 50.Motor supporting plate 30 can be made to rotate around pin shaft by the pressing of spring 40, motor 20 is also just along shown in FIG. 1 clockwise
Thus direction rotation, belt are tensioned.The technical solution structure of the invention is more complicated, and the space occupied is larger, is not suitable for application
In such as aero-engine field for needing cramped construction.
Summary of the invention
Based on the defect of the above-mentioned prior art, the present invention is directed to propose a kind of train tensioning apparatus and being tensioned including the train
The train of device, so that its structure be made to simplify, cost lowers.
The present invention proposes a kind of train tensioning apparatus, comprising:
First rotatable parts are used to be sequentially connected via belt and the second rotatable parts, to be rotated by described first
Component, the belt and second rotatable parts constitute a part of train or train;
Bracket, first rotatable parts can be pivotally mounted within a predetermined range described relative to the bracket 1
Bracket;And
Elastomeric element, the elastomeric element are installed between the bracket 1 and first rotatable parts, the elastic portion
Part exerts a force to first rotatable parts, tends to that the first rotatable parts edge is made to make the direction of the belt tension far from described
Second rotatable parts it is mobile,
The elastomeric element includes spring, and the bracket is provided with the first slot, and first slot keeps the one of the spring
End, the other end of the spring directly or indirectly compress first rotatable parts, the elastic force direction of the spring and described the
The line direction of the center of rotation of one rotatable parts and the center of rotation of second rotatable parts is substantially parallel.
Preferably, the elastomeric element further includes rubber column, and the rubber column is set to the spring and first turn described
Between dynamic component,
One end of the rubber column is inserted into the other end of the spring, and the other end of the rubber column is inserted into and is held in
In second slot of the first rotatable parts setting, the middle part of the rubber column is connected to the other end of the spring.
Preferably, the spring is spiral compression spring, and the spring is cone.
It is highly preferred that the bottom of first slot is provided with protrusion, the protrusion is inserted into one end of the spring, described
Protrusion is provided with hole, and one end of the rubber column is inserted into the hole.
Preferably, the elastomeric element is set to described at the first position in the circumferential direction of first rotatable parts
Between one rotatable parts and the bracket.
It is highly preferred that the second position of first rotatable parts in the circumferential direction of first rotatable parts is around first
Axis is rotatably installed on the bracket, and the first axle is located at the second place, and first rotatable parts exist
The third place in the circumferential direction of first rotatable parts may be pivotally mounted to the bracket around the first axle, so that
First rotatable parts can integrally be swung around the first axle.
Preferably, the center of rotation of the line of the second position and the third place and first rotatable parts and
The line of the center of rotation of second rotatable parts is substantially vertical.
Preferably, the first position and the second position are located at the radial outside position of first rotatable parts.
Preferably, the first position and the second position are staggered about in the circumferential direction of first rotatable parts
The angle of 180 degree.
Preferably, the first position is than the third place by side where second rotatable parts.
Preferably, in the second place, the bracket 1 includes the first mounting hole, and first mounting hole is circular hole,
First rotatable parts and first mounting hole are passed through by the first fastener, makes first rotatable parts rotationally
It is installed on the bracket.
Preferably, at the third place, the bracket 1 includes the second mounting hole, and second mounting hole is long hole,
First rotatable parts and second mounting hole are passed through by the second fastener, enables second fastener along institute
State the length direction activity of the second mounting hole.
It is highly preferred that second mounting hole is arc, the center of circle of the arc is on the first axle.
Preferably, the axial size along first rotatable parts of first mounting hole is greater than first peace
The diameter for filling hole, is not easy first rotatable parts around radial torsion.
The present invention also proposes that a kind of train, the train include:
Train tensioning apparatus described in any one of above-mentioned technical proposal;And
Second rotatable parts and belt, first rotatable parts have first pulley, and second rotatable parts have
Second belt wheel, the belt sleeve is in the first pulley and second belt wheel.
Preferably, first rotatable parts are driven member, and second rotatable parts are driving link.
Based on the above-mentioned technical proposal, it is exerted a force by lesser elastomeric element to the first rotatable parts, just by lesser power
It is easy to make the first rotatable parts along the direction of belt tension is moved far from the second transmission parts, belt tension can be made bright
It is aobvious, so that the structure simplification of train tensioning apparatus, weight saving, cost reduction.
Detailed description of the invention
Fig. 1 shows a kind of structural schematic diagram of the belt in the prior art from tensioning apparatus.
Fig. 2 shows the structural schematic diagrams of train according to embodiment of the present invention.
What Fig. 3 showed train according to embodiment of the present invention conceals part-structure (the first rotatable parts)
Structural schematic diagram.
Fig. 4 shows the structural representation for concealing part-structure (bracket) of train according to embodiment of the present invention
Figure.
Fig. 5 shows the structural schematic diagram of the elastomeric element of train according to embodiment of the present invention.
Fig. 6 shows the partial sectional view of train according to embodiment of the present invention.
Description of symbols
10 cylinder, 20 motor, 30 motor supporting plate, 40 spring, 50 screw rod
1 bracket, 11 first mounting hole, 12 second 13 first slot of mounting hole, 14 protrusion, 15 hole, 16 fixed part
2 first rotatable parts, 21 first pulley, 22 ear
3 first fastener, 31 first 32 second nut of nut, 33 bolt
The one of 42 rubber column of the other end, 421 rubber column of 412 spring of one end of 4 elastomeric element, 41 spring, 411 spring
Hold the other end of 422 rubber column middle part, 423 rubber column
5 second rotatable parts, 51 second belt wheel
6 belts
7 second fasteners.
Specific embodiment
Exemplary embodiments of the present invention are described with reference to the accompanying drawings.It should be appreciated that these specific descriptions are only used for
How teaching those skilled in the art implement the present invention, rather than all feasible modes that exhaustion is of the invention, without in
It limits the scope of the invention.
As shown in Fig. 2, train includes bracket 1, the first rotatable parts 2, the second rotatable parts 5, elastomeric element 4 and belt 6.
First rotatable parts 2 are installed on bracket 1, and make to be pivoted relative to each other between the first rotatable parts 2 and bracket 1, the first rotation
Component 2 is sequentially connected via belt 6 and the second rotatable parts 5.
Specifically, the first rotatable parts 2 have first pulley 21, and the second rotatable parts 5 have the second belt wheel 51, belt 6
It covers in first pulley 21 and the second belt wheel 51, first pulley 21 and the second belt wheel 51 is enable to rotate synchronously.Such as first turn
Dynamic component 2 can be driven member, and the second rotatable parts 5 can be driving link, and the second belt wheel 51 makes first band by the transmission of belt 6
21 rotation of wheel.
Bracket
As shown in Figures 2 to 4, bracket 1 enables the first rotatable parts 2 relative to branch for installing the first rotatable parts 2
Frame 1 pivots within a predetermined range.Bracket 1 has for 1 fixed part 16 of mounting bracket and for installing the first rotation section
The installation section of part 2, installation section are shaped generally as " C " font along the circumferentially extending of the first rotatable parts 2.Installation section and
Fixed part 16 can be, but not limited to be integrally formed.The second position of first rotatable parts 2 in the circumferential direction of the first rotatable parts 2
It is rotatably installed on bracket 1 around first axle, and first axle is located at the second place.First rotatable parts 2 are
The third place in the circumferential direction of one rotatable parts 2 may be pivotally mounted to bracket 1 around first axle, so that the first rotatable parts
2 entirety can be swung within a predetermined range around first axle.It is set at the second place of first rotatable parts 2 and the third place
It is equipped with the ear 22 extended to the radial outside of the first rotatable parts 2, the first rotatable parts 2 are installed on bracket 1 by ear 22.
Specifically, bracket 1 includes the first mounting hole 11 and the second mounting hole 12, and the first rotatable parts 2 pass through the first installation
Hole 11 and the second mounting hole 12 are installed on bracket 1, and the first mounting hole 11 is located at the second position, and the second mounting hole 12 is located at third position
It sets.First mounting hole 11 is located at one end of installation section, and the other end of installation section is connect with fixed part 16.
Further, the second position is located at the radial outside position of the first rotatable parts 2, and the third place is located at the first rotation
The radial outside position of component 2.It is appreciated that the second position is located at the radial outside position of the first rotatable parts 2, i.e. first axle
Line is located at the radial outside position of the first rotatable parts 2, when the first rotatable parts 2 can be made to swing around first axle, first
The center position of rotatable parts 2 is mobile.That is, first axle is not located at least in the rotation of the first rotatable parts 2
Heart position.
It is appreciated that the second position and the third place are staggered in the circumferential direction of the first rotatable parts 2, the second position is only
Have at one, the third place there can be one or more.For example, the third place has at one.
As shown in figure 3, the first mounting hole 11 is circular hole, first axle is the axis of the first mounting hole 11.Second mounting hole
12 be long hole, such as the second mounting hole 12 can be arc, and on first axle, the arc length of arc limits the in the center of circle of arc
The range of pivot of one rotatable parts 2.
The diameter for being greater than the first mounting hole 11 along the axial size of the first rotatable parts 2 of first mounting hole 11 makes the
One rotatable parts 2 are not easy around radial torsion.
Ear 22 and the first mounting hole 11 that the first rotatable parts 2 are passed through by the first fastener 3, so that the first rotation section
Part 2 and bracket 1 are rotatably connected.Ear 22 and the second mounting hole 12 of the first rotatable parts 2 are passed through by the second fastener 7,
Enable the second fastener 7 along the length direction activity of second mounting hole 12.
As shown in Figure 3 and Figure 4, the first fastener 3 includes the first nut 31, the second nut 32 and bolt 33, the first nut
31 and second nut 32 be mounted on being bonded to each other on the bolt 33, the second nut 32 is compared to the first nut 31 far from bolt
33 head, the first nut 31 are not tightened, and the first rotatable parts 2 is avoided to be fixedly connected with bracket 1, and the second nut 32 is tightened, and are prevented
Only the first nut 31 loosens.
Second fastener 7 is identical as the structure of the first fastener 3, repeats no more.
Elastomeric element
As shown in Figure 2, Figure 5 and Figure 6, elastomeric element 4 is installed between bracket 1 and the first rotatable parts 2, elastomeric element 4
It exerts a force to the first rotatable parts 2, tends to make the first rotatable parts 2 along the direction for being tensioned the belt 6 far from the second rotation section
5 ground of part is mobile.
Further, elastomeric element 4 is set to the first rotation section at the first position in the circumferential direction of the first rotatable parts 2
Between part 2 and bracket 1.First position and the second position separate in the circumferential direction of the first rotatable parts 2.For example, first
Set the circumferentially spaced about 180 degree with the second position in the first rotatable parts 2.First position can be located at the of the third place
Two rotatable parts, 5 place side.The elastomeric element 4 that first position is arranged in is located at ear 22 and the bracket 1 that the third place is arranged in
Between, it is exerted a force by elastomeric element 4 to ear 22, tends to make the first rotatable parts 2 along the direction for being tensioned belt 6 far from second
5 ground of rotatable parts is mobile.
First position is located at the radial outside position of the first rotatable parts 2, so that the first rotatable parts 2 be made to be easy in elastic force
Act on lower swing.
It is appreciated that the circumferentially spaced about 180 degree of first position and the second position in the first rotatable parts 2, and
First position is located at the radial outside position of the first rotatable parts 2, the distance of first position and the second position can be made to increase, i.e.,
The arm of force increases, so that elastomeric element 4 exerts a force to the first rotatable parts 2, is easy to swing the first rotatable parts 2.
As shown in Figure 5 and Figure 6, further, elastomeric element 4 includes spring 41 and rubber column 42, and spring 41 is spiral pressure
Contracting spring, spring 41 are cone.With the variation of the compression degree of the spring, the variation of spring force is smaller, so as to make
The tensile force variation for obtaining train tensioning apparatus is smaller.Spring 41 has one end 411 and the other end 412, and rubber column 42 is set to bullet
The other end 412 of spring 41, such as rubber column 42 can be set between spring 41 and the first rotatable parts 2, and rubber column 42 can be with
Reduce the vibration of the first rotatable parts 2.It is appreciated that rubber column 42 can also be set between spring 41 and bracket 1.
As shown in Figures 2 and 3, the center of rotation of the line and the first rotatable parts 2 of the second position and the third place and
The line of the center of rotation of two rotatable parts 5 is substantially vertical, such as the two angle is between 70 degree to 110 degree.To make first
Rotatable parts 2 swing when, the center of rotation of the first rotatable parts 2 along the center of rotation of the first rotatable parts 2 and second turn
The variable quantity in the line direction of the center of rotation of dynamic component 5 is larger, belt 6 can be made to be tensioned regulating effect obvious.
The force direction of elastomeric element 4 is approximately perpendicular to the line of first position and the second position, specifically, spring 41
Approximately axially perpendicular to the line of first position and the second position, so that the first rotatable parts 2 be made to be easy the effect in spring force
Lower swing.
The force direction of elastomeric element 4 and the center of rotation of the first rotatable parts 2 and the center of rotation of the second rotatable parts 5
Line it is substantially parallel, such as both angle less than 20 degree.Lesser elastomeric element 4 can be used, just by lesser power
It is easy to swing the first rotatable parts 2, to keep the tension effects of belt 6 obvious.
Bracket 1 is provided with the first slot 13, and the first slot 13 is used to keep one end 411 of spring 41, one end 421 of rubber column 42
It is inserted into the other end 412 of spring 41, the other end 423 of rubber column 42 is inserted into and is held in the of the first rotatable parts 2 setting
In two slots or recess portion, the middle part 422 of rubber column 42 is connected to the other end 412 of spring 41.
Further, the bottom of the first slot 13 is provided with protrusion 14, and protrusion 14 is inserted into one end 411 of spring 41, protrusion
14 are provided with hole 15, and one end 421 of rubber column 42 is inserted into hole 15.When spring 41 is compressed, rubber column 42 is along hole 15
It is axially moved, hole 15 can play the role of guiding.
The advantages of illustrating train tensioning apparatus of the invention below.
Train tensioning apparatus need not be arranged tensioning wheel and use elastomeric element 4, it is possible to reduce amount of parts reduces material
Consumption reduces occupied space, and assembly process can be made easy, reduce manufacturing cost.
Train tensioning apparatus of the invention can be used for the transmission system using Timing Belt of engine, especially aviation
The transmission system using Timing Belt of engine can mitigate the weight of engine, reduce energy consumption, body is made to seem simpler
It is clean, beautiful.
The present invention is not limited to the above embodiments.Those skilled in the art certainly may be used under the introduction of the description of the present application
To be variously modified and modification, these change and modification is intended to be included within the scope of the present invention.
Claims (13)
1. a kind of train tensioning apparatus characterized by comprising
First rotatable parts (2) are used to be sequentially connected via belt (6) and the second rotatable parts (5), thus by described first
Rotatable parts (2), the belt (6) and second rotatable parts (5) constitute a part of train or train;
Bracket (1), first rotatable parts (2) can be pivotally mounted within a predetermined range relative to the bracket (1)
The bracket (1);And
Elastomeric element (4), the elastomeric element (4) are installed between the bracket (1) and first rotatable parts (2), institute
It states elastomeric element (4) to exert a force to first rotatable parts (2), tends to that the first rotatable parts (2) edge is made to make the belt
(6) direction being tensioned is far from second rotatable parts (5) mobile,
The elastomeric element (4) includes spring (41), and the bracket (1) is provided with the first slot (13), and first slot (13) is protected
One end of the spring (41) is held, the other end of the spring (41) directly or indirectly compresses first rotatable parts (2), institute
State turn of the elastic force direction of spring (41) and the center of rotation of first rotatable parts (2) and second rotatable parts (5)
The line direction at dynamic center is substantially parallel,
The elastomeric element (4) is set to described first turn at the first position in the circumferential direction of first rotatable parts (2)
Between dynamic component (2) and the bracket (1),
The second position of first rotatable parts (2) in the circumferential direction of first rotatable parts (2) can around first axle
It is rotatably mounted to the bracket (1), the first axle is located at the second place, and first rotatable parts (2) exist
The third place in the circumferential direction of first rotatable parts (2) may be pivotally mounted to the bracket around the first axle
(1), so that first rotatable parts (2) can integrally be swung around the first axle,
At the third place, the bracket (1) includes the second mounting hole (12), and second mounting hole (12) is long hole,
First rotatable parts (2) and second mounting hole (12) are passed through by the second fastener (7), so that second fastening
Part (7) can be along the length direction activity of second mounting hole (12).
2. train tensioning apparatus according to claim 1, which is characterized in that the elastomeric element (4) further includes rubber column
(42), the rubber column (42) is set between the spring (41) and first rotatable parts (2),
One end of the rubber column (42) is inserted into the other end of the spring (41), the other end insertion of the rubber column (42)
And be held in the second slot of the first rotatable parts (2) setting, the middle part of the rubber column (42) is connected to the bullet
The other end of spring (41).
3. train tensioning apparatus according to claim 1, which is characterized in that the spring (41) is spiral compression spring,
The spring (41) is cone.
4. train tensioning apparatus according to claim 2, which is characterized in that the bottom of first slot (13) is provided with convex
Portion (14), the protrusion (14) are inserted into one end of the spring (41), and the protrusion (14) is provided with hole (15), the rubber
One end of column (42) is inserted into the hole (15).
5. train tensioning apparatus according to claim 1, which is characterized in that the second position and the third place
The line of the center of rotation of the center of rotation and second rotatable parts (5) of line and first rotatable parts (2) is substantially
Vertically.
6. train tensioning apparatus according to claim 1, which is characterized in that the first position and the second set
In the radial outside position of first rotatable parts (2).
7. train tensioning apparatus according to claim 1, which is characterized in that the first position and the second position exist
The angle for the about 180 degree of being staggered in the circumferential direction of first rotatable parts (2).
8. train tensioning apparatus according to claim 1, which is characterized in that the first position is leaned on than the third place
Side where second rotatable parts (5).
9. train tensioning apparatus according to claim 1, which is characterized in that in the second place, the bracket (1)
Including the first mounting hole (11), first mounting hole (11) is circular hole, passes through first rotation by the first fastener (3)
Component (2) and first mounting hole (11) make first rotatable parts (2) be rotatably installed on the bracket (1).
10. train tensioning apparatus according to claim 1, which is characterized in that second mounting hole (12) is arc, institute
The center of circle of arc is stated on the first axle.
11. train tensioning apparatus according to claim 9, which is characterized in that first mounting hole (11) along institute
The axial size for stating the first rotatable parts (2) is greater than the diameter of first mounting hole (11), makes first rotatable parts
(2) it is not easy around radial torsion.
12. a kind of train, which is characterized in that the train includes:
Train tensioning apparatus described in any one of claims 1 to 11;And
Second rotatable parts (5) and belt (6), first rotatable parts (2) have first pulley (21), second rotation
Component (5) has the second belt wheel (51), and the belt (6) covers in the first pulley (21) and second belt wheel (51).
13. train according to claim 12, which is characterized in that first rotatable parts (2) are driven member, described the
Two rotatable parts (5) are driving link.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201811312685.8A CN109210160B (en) | 2018-11-06 | 2018-11-06 | Train tensioning apparatus and train |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201811312685.8A CN109210160B (en) | 2018-11-06 | 2018-11-06 | Train tensioning apparatus and train |
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CN109210160A CN109210160A (en) | 2019-01-15 |
CN109210160B true CN109210160B (en) | 2019-09-20 |
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CN201811312685.8A Active CN109210160B (en) | 2018-11-06 | 2018-11-06 | Train tensioning apparatus and train |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111703299A (en) * | 2020-07-22 | 2020-09-25 | 朔州佳隆工贸有限公司 | Truck charger supporting device |
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US3768324A (en) * | 1971-03-11 | 1973-10-30 | Plenty & Son Ltd | Automatic belt tensioning device |
CN101121415A (en) * | 2006-08-10 | 2008-02-13 | 株式会社万都 | Electric power steering apparatus equipped with a mechanism for adjusting the tension of a transmission belt |
CN202392059U (en) * | 2011-11-22 | 2012-08-22 | 长城汽车股份有限公司 | Belt tension mechanism for engine accessory gear train |
CN103821889A (en) * | 2012-11-19 | 2014-05-28 | 陈晓 | Chain wheel tensioning mechanism |
CN204344837U (en) * | 2014-11-27 | 2015-05-20 | 徐工集团工程机械股份有限公司 | Chain rigidity controlling device |
CN104653734A (en) * | 2015-02-04 | 2015-05-27 | 温州职业技术学院 | Automatic adjusting device for tensioning belt of dust suction blower |
CN107202137A (en) * | 2017-07-19 | 2017-09-26 | 王萌 | A kind of timing belt antivibration tensioning apparatus |
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2018
- 2018-11-06 CN CN201811312685.8A patent/CN109210160B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US3768324A (en) * | 1971-03-11 | 1973-10-30 | Plenty & Son Ltd | Automatic belt tensioning device |
CN101121415A (en) * | 2006-08-10 | 2008-02-13 | 株式会社万都 | Electric power steering apparatus equipped with a mechanism for adjusting the tension of a transmission belt |
CN202392059U (en) * | 2011-11-22 | 2012-08-22 | 长城汽车股份有限公司 | Belt tension mechanism for engine accessory gear train |
CN103821889A (en) * | 2012-11-19 | 2014-05-28 | 陈晓 | Chain wheel tensioning mechanism |
CN204344837U (en) * | 2014-11-27 | 2015-05-20 | 徐工集团工程机械股份有限公司 | Chain rigidity controlling device |
CN104653734A (en) * | 2015-02-04 | 2015-05-27 | 温州职业技术学院 | Automatic adjusting device for tensioning belt of dust suction blower |
CN107202137A (en) * | 2017-07-19 | 2017-09-26 | 王萌 | A kind of timing belt antivibration tensioning apparatus |
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