CN109723777A - Synchronous belt tension device - Google Patents
Synchronous belt tension device Download PDFInfo
- Publication number
- CN109723777A CN109723777A CN201811594982.6A CN201811594982A CN109723777A CN 109723777 A CN109723777 A CN 109723777A CN 201811594982 A CN201811594982 A CN 201811594982A CN 109723777 A CN109723777 A CN 109723777A
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- China
- Prior art keywords
- synchronous belt
- fixing piece
- pulley
- shell
- tension device
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Abstract
The invention belongs to tensioning structure for synchronous belt technical fields, are related to synchronous belt tension device.Synchronous belt, the coaxially connected output shaft in steering engine of first pulley are arranged between first pulley and the second belt wheel, and steering engine shell is slidably mounted on fixing piece.When adjusting the position of first pulley, frictional fit between shell rubbing surface and fixing piece confined planes.First pulley position is being adjusted so that after synchronous belt tensioning, with first pulley and steering engine, object carries out force analysis as a whole, whole object is by the frictional force between the pulling force and rubbing surface and confined planes of synchronous belt, when the frictional force is greater than or equal to the component on moving direction, coefficient of friction i.e. between rubbing surface and confined planes is greater than or equal to the cotangent of predetermined angle, it can realize that synchronous belt tension position locks at this time, prevent synchronous belt after being used for a long time from loosening the transmission efficiency reduction problem generated, it is simple for structure, and additional strainer is not needed, it is able to achieve good tension effects.
Description
Technical field
The invention belongs to tensioning structure for synchronous belt technical fields, are to be related to synchronous belt tension device more specifically.
Background technique
Toothed belt transmission is one of common kind of drive, has many advantages, such as that stable drive, transmission efficiency are high.Synchronous belt
It is made of the material with certain elasticity, such as polyurethane, and there are tolerances for the distance between synchronous pulley, lead to transmission efficiency
It is low and that there are backhauls is poor.The scheme for solving the problems, such as this at present is mostly one tensioning wheel of increase between two synchronizing belt gears, but
It is that there is also tolerances for tensioning wheel itself, can not be inherently eliminated after backhaul difference and long-time use there is also loosening, transmission is imitated
The low problem of rate.
Summary of the invention
The purpose of the present invention is to provide a kind of synchronous belt tension devices, to solve in prior art synchronous belt drive mechanism
The spacing of two belt wheels leads to that transmission efficiency is low, there are the technical problems of backhaul difference there are tolerance.
The embodiment of the present invention provides a kind of synchronous belt tension device, comprising:
Fixing piece with confined planes；
Steering engine comprising be slidably mounted on the shell of the fixing piece, the shell has to rub with the confined planes
Wipe the rubbing surface of cooperation；
The first pulley of the coaxially connected output shaft in the steering engine；
It is rotatablely installed the second belt wheel in the fixing piece；And
It is wound around the synchronous belt of the first pulley Yu second belt wheel；
The moving direction of the circle center line connecting and the shell of the first pulley and second belt wheel is wrong in predetermined angle
It opens, the coefficient of friction between the rubbing surface and the confined planes is greater than or equal to the cotangent of the predetermined angle.
Optionally, the fixing piece is plate-like, and the fixing piece offers sliding slot, and the wherein one side of the sliding slot is formed
The confined planes, the shell are set to the sliding slot.
Optionally, the sliding slot is arranged through the fixing piece, and the fixing piece is in the edge bent of the sliding slot
At there is flange part；The shell include boss portion and be connected to the boss portion periphery turn-up portion, the boss portion its
Middle one side forms the rubbing surface, and the boss portion protrudes into the sliding slot setting, and the turn-up portion is opposite with the flange part
It is arranged so that the shell is limited in the fixing piece.
Optionally, the thickness of the flange part is suitable with the thickness of the boss portion.
Optionally, the end of the sliding slot has the closed end for limiting the shell moving range.
Optionally, the confined planes and the rubbing surface are arranged along linear extension.
It optionally, further include being fixedly installed in the connecting shaft of the fixing piece and for second belt wheel to be supported on
The bearing of the connecting shaft.
Optionally, the connecting shaft is hollow shaft, and the fixing piece offers the through-hole being oppositely arranged with the connecting shaft.
Optionally, the shell offers via hole, the output shaft of the steering engine be arranged in after the via hole it is coaxially connected in
The first pulley.
Optionally, the side of the first pulley is equipped with the first spacing collar for limiting to the synchronous belt；Described
The side of two belt wheels is equipped with the second spacing collar for limiting to the synchronous belt.
Said one or multiple technical solutions in synchronous belt tension device provided by the invention at least have following technology
One of effect: being arranged with synchronous belt between first pulley and the second belt wheel, the coaxially connected output shaft in steering engine of first pulley, and
Steering engine shell is slidably mounted on fixing piece, i.e. position-adjustable of the first pulley relative to the second belt wheel.Adjusting first
When the position of belt wheel, frictional fit between shell rubbing surface and fixing piece confined planes.First pulley position is being adjusted so that synchronous
After band tensioning, with first pulley and steering engine, object carries out force analysis as a whole, whole object by synchronous belt pulling force and
Frictional force between rubbing surface and confined planes, when the frictional force is greater than or equal to the component on moving direction, i.e. rubbing surface and limit
Coefficient of friction between plane is greater than or equal to the cotangent of predetermined angle, can realize that synchronous belt tension position locks at this time, prevent
Synchronous belt, which loosens the transmission efficiency generated, after long-time service reduces problem, simple for structure, and does not need additional strainer,
It is able to achieve good tension effects.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the three-dimensional installation diagram of synchronous belt tension device provided in an embodiment of the present invention；
Fig. 2 is the synchronous belt tension device of Fig. 1 with the force analysis figure of first pulley and steering engine object as a whole；
Fig. 3 is another angle three-dimensional installation diagram of the synchronous belt tension device of Fig. 1；
Fig. 4 is the three-dimensional cutaway view of the synchronous belt tension device of Fig. 1；
Fig. 5 is the stereogram exploded view of the synchronous belt tension device of Fig. 1；
Fig. 6 is the further stereogram exploded view of the synchronous belt tension device of Fig. 5.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
In the description of the embodiment of the present invention, it is to be understood that term " length ", " width ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached
Orientation or positional relationship shown in figure is merely for convenience of the description embodiment of the present invention and simplifies description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the embodiment of the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In embodiments of the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ",
Terms such as " fixations " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be with
It is mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside a element.For the ordinary skill in the art, Ke Yigen
The concrete meaning of above-mentioned term in embodiments of the present invention is understood according to concrete condition.
Fig. 1 to Fig. 6 is please referred to, the embodiment of the present invention provides a kind of synchronous belt tension device, including fixing piece 10, steering engine
20, first pulley 30, the second belt wheel 40, synchronous belt 50.Carrier of the fixing piece 10 as installation steering engine 20 and the second belt wheel 40, Gu
Part 10 is determined with confined planes 10a；Steering engine 20 includes the shell 21 for being slidably mounted on fixing piece 10, and shell 21 has and limit
The rubbing surface 21a of face 10a frictional fit；The coaxially connected output shaft (not shown) in steering engine 20 of first pulley 30；Second belt wheel
40 rotational installations are in fixing piece 10；Synchronous belt 50 is wound around first pulley 30 and the second belt wheel 40；First pulley 30 and the second band
The circle center line connecting L of wheel 40 and the moving direction A of shell 21 are staggered in predetermined angle α, between rubbing surface 21a and confined planes 10a
Friction coefficient μ is greater than or equal to the cotangent of predetermined angle α.
It is arranged with synchronous belt 50 between first pulley 30 and the second belt wheel 40, first pulley 30 is coaxially connected in steering engine 20
Output shaft, and 20 shell 21 of steering engine is slidably mounted on fixing piece 10, i.e. position of the first pulley 30 relative to the second belt wheel 40
It sets adjustable.When adjusting the position of first pulley 30, rub between 10 confined planes 10a of 21 rubbing surface 21a of shell and fixing piece
Cooperation.After adjusting 30 position of first pulley so that synchronous belt 50 is tensioned, with first pulley 30 and steering engine 20 object as a whole
Force analysis is carried out, whole object is by the frictional force between the pulling force and rubbing surface 21a and confined planes 10a of synchronous belt 50.When
The frictional force is greater than or equal to the component on moving direction A, i.e. friction coefficient μ between rubbing surface 21a and confined planes 10a is greater than
Or the cotangent equal to predetermined angle α, it can realize that 50 tension position of synchronous belt locks at this time, prevent 50 pine of synchronous belt after being used for a long time
The raw transmission efficiency of movable property reduces problem, simple for structure, and does not need additional strainer, is able to achieve tensioning effect well
Fruit.
Specifically, referring to Fig.2, shell 21 is exactly the extension side of confined planes 10a relative to the moving direction A of fixing piece 10
To.After adjusting 30 position of first pulley so that synchronous belt 50 is tensioned, with first pulley 30 and steering engine 20 as a whole object into
Row force analysis, it is assumed that the pulling force of synchronous belt 50 is F, to it parallel and perpendicular to carrying out on 30 moving direction A of first pulley
It decomposes, obtains component F*cos α on moving direction A and perpendicular to the component F*sin α on moving direction A.Wherein, perpendicular to
Component F*sin α on moving direction A is pressure of the 21 rubbing surface 21a of shell to 10 confined planes 10a of fixing piece.20 shell of steering engine
21 effects by frictional force simultaneously, size are that μ * F*sin α, μ are coefficient of friction.As long as from figure 1 it appears that frictional force
More than or equal to the component of moving direction A, i.e. μ * F*sin α >=F*cos α, i.e. μ >=cot α, rubbing surface 21a and confined planes 10a it
Between friction coefficient μ be greater than or equal to predetermined angle α cotangent, α be known angle, it can realize 50 tension position of synchronous belt
Locking.
In an alternative embodiment of the invention, when first pulley 30 has the position in adjustment housings 21 relative to fixing piece 10
The tensioning for being tensioned synchronous belt 50 adjusts position.Preferably, position is adjusted using 50 elastic deformation extreme position of synchronous belt as tensioning, protected
Synchronous belt 50 is able to maintain tensioning after card is used for a long time.
In an alternative embodiment of the invention, fixing piece 10 is plate-like, and fixing piece 10 offers sliding slot 11, and sliding slot 11 is wherein
One side forms confined planes 10a, and shell 21 is set to sliding slot 11.The structure is easily worked, convenient for shell 21 is set in sliding slot 11,
Steering engine 20 is allowed to slide in the extending direction of sliding slot 11, to adjust position of the first pulley 30 relative to the second belt wheel 40.It can be with
Understand ground, confined planes 10a can also be set to the other structures of fixing piece 10, as long as being adjustable steering engine 20 relative to the second steering engine 20
Position, and allow the rubbing surface 21a of 20 shell 21 of steering engine can be with confined planes 10a frictional fit.
In an alternative embodiment of the invention, refering to fig. 4 to fig. 6, sliding slot 11 is arranged through fixing piece 10, fixing piece 10 in
The edge of sliding slot 11 has been bent to form flange part 12；Shell 21 includes boss portion 211 and is connected to the periphery of boss portion 211 and turns over
Edge 212, the wherein one side of boss portion 211 form rubbing surface 21a, and boss portion 211 protrudes into the setting of sliding slot 11, turn-up portion 212
It is oppositely arranged with flange part 12 so that shell 21 is limited in fixing piece 10.The program is moveably mounted convenient for 20 shell 21 of steering engine
In fixing piece 10, and allow rubbing surface 21a and confined planes 10a frictional fit.21 turn-up portion 212 of shell is connected to 10 flange of fixing piece
Portion 12 can limit position of the shell 21 relative to fixing piece 10, and shell 21 is allowed to be maintained at the wherein side of fixing piece 10, without
Into 10 other side of fixing piece.
In an alternative embodiment of the invention, the thickness of flange part 12 is suitable with the thickness of boss portion 211.Herein, the two is thick
Degree quite refer to that flange part 12 can be equal with the thickness of boss portion 211, can not also wait still thickness difference it is smaller.In flange
After portion 12 protrudes into the sliding slot 11 of boss portion 211, overall structure is smaller in the size of thickness direction, so that compact overall structure.Separately
Outside, the thickness of fixing piece 10 is suitable with the thickness of turn-up portion 212, and integrally-built thickness direction size can also be effectively reduced.
In an alternative embodiment of the invention, the end of sliding slot 11 has the closed end for limiting 21 moving range of shell
111.The moving range of shell 21 can effectively be limited in the end of sliding slot 11 setting closed end 111, avoid shell 21 leave in
Fixing piece 10.Specifically, the both ends of sliding slot 11 are closed end 111, limit the two sides moving range of shell 21.
In an alternative embodiment of the invention, confined planes 10a and rubbing surface 21a is arranged along linear extension.The structure is easy
Molding, convenient for confined planes 10a and rubbing surface 21a frictional fit.At this point, shell 21 relative to fixing piece 10 moving direction A just
It is the linear extension direction of confined planes 10a.It is to be appreciated that confined planes 10a and rubbing surface 21a can also simultaneously in other ways
It is extended, if the position-adjustable between shell 21 and fixing piece 10, and confined planes 10a and rubbing surface 21a can rub
Cooperation.
It in an alternative embodiment of the invention, further include being fixedly installed in the connecting shaft 60 of fixing piece 10 and being used for second
Belt wheel 40 is supported on the bearing 70 of connecting shaft 60.The program is rotatablely installed convenient for the second belt wheel 40 in fixing piece 10.Specifically, even
Spindle 60 is fixed on fixing piece 10 by fastener.Connecting shaft 60 is equipped with installation position 61, and the second belt wheel 40 is equipped with installation position 42, just
It is installed between connecting shaft 60 and the second belt wheel 40 in bearing 70, and realizes the axially position of bearing 70.
In an alternative embodiment of the invention, connecting shaft 60 is hollow shaft, and fixing piece 10 offers set opposite with connecting shaft 60
The through-hole 13 set.The program is easy assembly, and hollow connecting shaft 60 cooperates the through-hole 13 of fixing piece 10, is convenient for ventilation and heat, just
In across signal wire.
In an alternative embodiment of the invention, shell 21 offers via hole 213, and the output shaft of steering engine 20 is arranged in via hole 213
It is coaxially connected in first pulley 30 afterwards.The structure is easy assembly, and the output shaft of steering engine 20 is only allowed to be pierced by 10 sliding slot 11 of fixing piece, and
20 other parts of steering engine are maintained at the other side of fixing piece 10.Specifically, can pass through between first pulley 30 and output shaft
Spline connection or the connection of other machinery connection type.
In an alternative embodiment of the invention, the side of first pulley 30 is equipped with the first limit for limiting to synchronous belt 50
Circle 31；The side of second belt wheel 40 is equipped with the second spacing collar 41 for limiting to synchronous belt 50.The outer diameter of spacing collar is greater than band
The outer diameter of wheel, spacing collar can limit synchronous belt 50, allow synchronous belt 50 to be held in a predetermined position, prevent sideslip.Specifically, it limits
Snare is set to outside the axis body of belt wheel, is easy assembly.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. synchronous belt tension device characterized by comprising
Fixing piece with confined planes；
Steering engine comprising be slidably mounted on the shell of the fixing piece, the shell has matches with the confined planes friction
The rubbing surface of conjunction；
The first pulley of the coaxially connected output shaft in the steering engine；
It is rotatablely installed the second belt wheel in the fixing piece；And
It is wound around the synchronous belt of the first pulley Yu second belt wheel；
The first pulley is staggered with the circle center line connecting of second belt wheel and the moving direction of the shell in predetermined angle, institute
State the cotangent that the coefficient of friction between rubbing surface and the confined planes is greater than or equal to the predetermined angle.
2. synchronous belt tension device as described in claim 1, which is characterized in that the fixing piece is plate-like, the fixing piece
Sliding slot is offered, the wherein one side of the sliding slot forms the confined planes, and the shell is set to the sliding slot.
3. synchronous belt tension device as claimed in claim 2, which is characterized in that the sliding slot is set through the fixing piece
It sets, the fixing piece has been bent to form flange part in the edge of the sliding slot；The shell includes boss portion and is connected to described
The turn-up portion of the periphery of boss portion, the wherein one side of the boss portion form the rubbing surface, and the boss portion protrudes into described
Sliding slot setting, the turn-up portion and the flange part are oppositely arranged so that the shell is limited in the fixing piece.
4. synchronous belt tension device as claimed in claim 3, which is characterized in that the thickness of the flange part and the boss portion
Thickness it is suitable.
5. synchronous belt tension device as claimed in claim 2, which is characterized in that the end of the sliding slot has for limiting
State the closed end of shell moving range.
6. such as synchronous belt tension device described in any one of claim 1 to 5, which is characterized in that the confined planes rub with described
Wiping face is arranged along linear extension.
7. such as synchronous belt tension device described in any one of claim 1 to 5, which is characterized in that further include being fixedly installed in institute
State the connecting shaft of fixing piece and the bearing for second belt wheel to be supported on to the connecting shaft.
8. synchronous belt tension device as claimed in claim 7, which is characterized in that the connecting shaft is hollow shaft, the fixation
Part offers the through-hole being oppositely arranged with the connecting shaft.
9. such as synchronous belt tension device described in any one of claim 1 to 5, which is characterized in that the shell offers via hole,
The output shaft of the steering engine is arranged in coaxially connected in the first pulley after the via hole.
10. such as synchronous belt tension device described in any one of claim 1 to 5, which is characterized in that the side of the first pulley
Equipped with the first spacing collar for being limited to the synchronous belt；The side of second belt wheel is equipped with for limiting the synchronous belt
Second spacing collar of position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811594982.6A CN109723777B (en) | 2018-12-25 | 2018-12-25 | Synchronous belt tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811594982.6A CN109723777B (en) | 2018-12-25 | 2018-12-25 | Synchronous belt tensioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109723777A true CN109723777A (en) | 2019-05-07 |
| CN109723777B CN109723777B (en) | 2020-10-13 |
Family
ID=66296382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811594982.6A Active CN109723777B (en) | 2018-12-25 | 2018-12-25 | Synchronous belt tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109723777B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113639020A (en) * | 2020-04-27 | 2021-11-12 | 林德（中国）叉车有限公司 | Synchronous belt transmission device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050216240A1 (en) * | 2004-03-26 | 2005-09-29 | Denso Corporation | Design method for belt transmission system |
| CN204942426U (en) * | 2015-09-01 | 2016-01-06 | 釜玛机械（江苏）有限公司 | A kind of structure being convenient to adjustment belt pulley parallelism and belt tension |
| CN207246344U (en) * | 2017-09-13 | 2018-04-17 | 艾迪森海安数字医疗装备有限公司 | V belt translation pre-tightening mechanism |
| CN108591390A (en) * | 2018-04-12 | 2018-09-28 | 中山小神童创新科技有限公司 | A kind of method of the positions and dimensions of tension structure and setting circular arc limit hole |
-
2018
- 2018-12-25 CN CN201811594982.6A patent/CN109723777B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050216240A1 (en) * | 2004-03-26 | 2005-09-29 | Denso Corporation | Design method for belt transmission system |
| CN204942426U (en) * | 2015-09-01 | 2016-01-06 | 釜玛机械（江苏）有限公司 | A kind of structure being convenient to adjustment belt pulley parallelism and belt tension |
| CN207246344U (en) * | 2017-09-13 | 2018-04-17 | 艾迪森海安数字医疗装备有限公司 | V belt translation pre-tightening mechanism |
| CN108591390A (en) * | 2018-04-12 | 2018-09-28 | 中山小神童创新科技有限公司 | A kind of method of the positions and dimensions of tension structure and setting circular arc limit hole |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113639020A (en) * | 2020-04-27 | 2021-11-12 | 林德（中国）叉车有限公司 | Synchronous belt transmission device |
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| Publication number | Publication date |
|---|---|
| CN109723777B (en) | 2020-10-13 |
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Address after: 518000 16th and 22nd Floors, C1 Building, Nanshan Zhiyuan, 1001 Xueyuan Avenue, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Youbixuan Technology Co.,Ltd. Address before: 518000 16th and 22nd Floors, C1 Building, Nanshan Zhiyuan, 1001 Xueyuan Avenue, Nanshan District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Youbixuan Technology Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Synchronous belt tensioning device Effective date of registration: 20210611 Granted publication date: 20201013 Pledgee: CITIC Bank Limited by Share Ltd. Shenzhen branch Pledgor: Shenzhen Youbixuan Technology Co.,Ltd. Registration number: Y2021440020039 |