CN208503378U - A kind of tensioning device for transmission chain - Google Patents
A kind of tensioning device for transmission chain Download PDFInfo
- Publication number
- CN208503378U CN208503378U CN201820837621.9U CN201820837621U CN208503378U CN 208503378 U CN208503378 U CN 208503378U CN 201820837621 U CN201820837621 U CN 201820837621U CN 208503378 U CN208503378 U CN 208503378U
- Authority
- CN
- China
- Prior art keywords
- chain
- connecting rod
- tensioning
- rotating bar
- extension spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model discloses a kind of tensioning device for transmission chain, including big sprocket wheel, minor sprocket and chain, the top and bottom end of chain are in contact with two tensioning wheels respectively, two tensioning wheels and fixing axle are rotatablely connected, one end of rotating bar is rotatablely connected by one end of the first pin and connecting rod, the side of rotating bar is fixedly connected with one end of extension spring, the other end of extension spring is fixedly connected with the side of connecting rod, the other side of connecting rod is fixed with several helical teeth, and the other end of connecting rod is equipped with fixed link.The utility model passes through setting tensioning wheel and extension spring, tensioning wheel and chain is allowed to be intermeshed, give chain one pressure, when chain-loose, due to the effect of extension spring, chain can be tensed again, pass through setting buckle and helical teeth, the unidirectional movement that connecting rod may be implemented, prevents the elastic force due to extension spring excessive, connecting rod is caused back to move.
Description
Technical field
The utility model relates to a kind of tensioning apparatus, specifically, being related to a kind of tensioning device for transmission chain.
Background technique
Driving chain makes to rotate transmission under the drive of gear and motor, due to the power output shaft, chain, gear of motor
It is all to be made by rigid material, chain is too loose to be easy to fall off, and too tightly, after a period of work, chain is easily deformed chain
It is even broken, certain damage can also be generated to gear and motor, it is, thus, sought for a kind of can facilitate for adjusting chain
Tightness makes chain keep the device of good tensioning state.
Therefore, such issues that solution, it is desirable to provide a kind of tensioning device for transmission chain.
Summary of the invention
Apply for that be solved is the technical issues of chain is easy to fall off in routine techniques.The utility model provides one kind
Auto-tensioning may be implemented compared to routine techniques in tensioning device for transmission chain.
In order to solve the above-mentioned technical problem, the utility model is achieved by the following technical programs: a kind of driving chain
Connection is engaged with big sprocket wheel and minor sprocket respectively in tensioning apparatus, including big sprocket wheel, minor sprocket and chain, the both ends of the chain,
The top and bottom end of the chain are in contact with two tensioning wheels respectively, and two tensioning wheels and fixing axle are rotatablely connected, institute
The one end for stating fixing axle is threadedly coupled with nut, and the other end of the fixing axle is fixedly connected with one end of rotating bar, and described turn
The other end of lever is rotatablely connected by one end of the first pin and connecting rod, and the one of the side of the rotating bar and extension spring
End is fixedly connected, and the other end of the extension spring is fixedly connected with the side of connecting rod, and the other side of the connecting rod is fixed
Equipped with several helical teeth, the other end of the connecting rod is equipped with fixed link, and the fixed link surface offers sliding slot, the connection
Bar is slidably connected with sliding slot, and the top and bottom in the sliding slot are fixed with the second pin, and two second pins are equal
It is rotatablely connected by reset spring and buckle, one end of the buckle is in contact with the side of helical teeth.
Preferably, the spacing of two tensioning wheels and minor sprocket is less than the spacing with big sprocket wheel.
Preferably, the angle between the rotating bar and connecting rod is less than 90 °.
Wherein, the tilt angle of described buckle one end is identical as the tilt angle of helical teeth side.
Wherein, the surface of the tensioning wheel is fixed with and the intermeshing gear teeth of chain.
Compared with prior art, the application can be obtained including following technical effect: the utility model passes through setting tensioning
Wheel and extension spring allow tensioning wheel and chain to be intermeshed, one pressure of chain are given, when chain-loose, due to extension spring
Effect, can chain be tensed again, by setting buckle and helical teeth, the unidirectional movement of connecting rod may be implemented, prevent due to
The elastic force of extension spring is excessive, moves connecting rod back, by the way that fixing axle is arranged, rotates tensioning wheel and fixing axle and connects
It connects, by the way that nut is arranged, limits the axial movement of tensioning wheel, by the way that the first pin is arranged, rotates connecting rod and rotating bar and connect
It connects.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment one；
Fig. 2 is one of the partial structural diagram of embodiment one；
Fig. 3 is the two of the partial structural diagram of embodiment one；
Fig. 4 is the three of the partial structural diagram of embodiment one；
Fig. 5 is the four of the partial structural diagram of embodiment one.
Description of symbols:
1, big sprocket wheel；2, minor sprocket；3, chain；4, tensioning wheel；5, fixing axle；6, rotating bar；7, the first pin；8, it connects
Bar；9, fixed link；10, extension spring；11, nut；12, the second pin；13, sliding slot；14, it buckles；15, helical teeth.
Specific embodiment
Presently filed embodiment is described in detail below in conjunction with accompanying drawings and embodiments, how the application is applied whereby
Technological means solves technical problem and reaches the realization process of technical effect to fully understand and implement.
As shown in Figs. 1-5, the utility model provides a kind of tensioning device for transmission chain, including big sprocket wheel 1, minor sprocket 2
With chain 3, connection is engaged at the both ends of chain 3 with big sprocket wheel 1 and minor sprocket 2 respectively, the top and bottom end of chain 3 respectively with two
Tensioning wheel 4 is in contact, and two tensioning wheels 4 and fixing axle 5 are rotatablely connected, and one end of fixing axle 5 is threadedly coupled with nut 11, fixed
The other end of axis 5 is fixedly connected with one end of rotating bar 6, and the other end of rotating bar 6 passes through the first pin 7 and the one of connecting rod 8
End rotation connection, the side of rotating bar 6 are fixedly connected with one end of extension spring 10, the other end and connecting rod of extension spring 10
8 side is fixedly connected, and the other side of connecting rod 8 is fixed with several helical teeth 15, and the other end of connecting rod 8 is equipped with fixed link
9,9 surface of fixed link offers sliding slot 13, and connecting rod 8 is slidably connected with sliding slot 13, and the top and bottom in sliding slot 13 are fixed
Equipped with the second pin 12, two the second pins 12 by 14 rotation connection of reset spring and buckle, buckle 14 one end with
The side of helical teeth 15 is in contact.
The spacing of two tensioning wheels 4 and minor sprocket 2 is less than the spacing with big sprocket wheel 1, because the cornerite of minor sprocket 2 is larger,
So needing tensioning wheel 4 close to minor sprocket 2.
Angle between the rotating bar 6 and connecting rod 8 is less than 90 °, in order to keep tensioning wheel 4 bigger to the pressure of chain 3.
The tilt angle of 14 one end of the buckle is identical as the tilt angle of 15 side of helical teeth, prevents due to extension spring 10
Elastic force it is excessive, cause connecting rod 8 back to move.
The surface of the tensioning wheel 4 be fixed with the intermeshing gear teeth of chain 3, in order to connect tensioning wheel 4 with chain 3
That touches is more stable.
The working principle of the utility model are as follows: two tensioning wheels 4 are engaged connection with the two sides of chain 3 first by user,
Then the depth that connecting rod 8 enters sliding slot 13 can be tentatively adjusted according to the distance of 3 top of chain and bottom end, because of connecting rod 8
When moving, helical teeth 15 can jack up the one end for buckling 14, when no longer moving, since reset spring can restore buckle 14 just
Beginning position is in contact with the side of helical teeth 15 again, prevents connecting rod 8 from back moving, when needing back to move connecting rod 8
When, it needs to press one end of buckle 14, allows buckle 14 not contact then at helical teeth 15, then move connecting rod 8 back, when chain 3
During operating, when becoming to loosen, due to the effect of extension spring 10, allows rotating bar 6 to rotate certain angle, make chain
3 tense again.
As used some vocabulary to censure specific components in the specification and claims.Those skilled in the art answer
It is understood that hardware manufacturer may call the same component with different nouns.This specification and claims are not with name
The difference of title is as the mode for distinguishing component, but with the difference of component functionally as the criterion of differentiation.Such as logical
The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit
In "." substantially " refer within the acceptable error range, those skilled in the art can within a certain error range solve described in
Technical problem basically reaches the technical effect.In addition, " coupling " word includes any direct and indirect electric property coupling herein
Means.Therefore, if it is described herein that a first device is coupled to a second device, then representing the first device can directly electrical coupling
It is connected to the second device, or the second device indirectly electrically coupled through other devices or coupling means.Specification
Subsequent descriptions be implement the application better embodiment, so it is described description be for the purpose of the rule for illustrating the application,
It is not intended to limit the scope of the present application.The protection scope of the application is as defined by the appended claims.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Include, so that commodity or system including a series of elements not only include those elements, but also including not clear
The other element listed, or further include for this commodity or the intrinsic element of system.In the feelings not limited more
Under condition, the element that is limited by sentence "including a ...", it is not excluded that in the commodity or system for including the element also
There are other identical elements.
Several preferred embodiments of the present invention have shown and described in above description, but as previously described, it should be understood that this
Utility model is not limited to forms disclosed herein, and should not be regarded as an exclusion of other examples, and can be used for various
Other combinations, modification and environment, and above-mentioned introduction or related fields can be passed through within the scope of the inventive concept described herein
Technology or knowledge be modified.And changes and modifications made by those skilled in the art do not depart from the spirit and model of the utility model
It encloses, then it all should be in the protection scope of the appended claims for the utility model.
Claims (5)
1. a kind of tensioning device for transmission chain, including big sprocket wheel (1), minor sprocket (2) and chain (3), which is characterized in that the chain
Connection is engaged at the both ends of item (3) with big sprocket wheel (1) and minor sprocket (2) respectively, and the top and bottom end of the chain (3) are respectively with two
A tensioning wheel (4) is in contact, and two tensioning wheels (4) and fixing axle (5) are rotatablely connected, one end of the fixing axle (5) with
Nut (11) is threadedly coupled, and the other end of the fixing axle (5) is fixedly connected with one end of rotating bar (6), the rotating bar (6)
The other end be rotatablely connected by one end of the first pin (7) and connecting rod (8), the side of the rotating bar (6) and stretch bullet
One end of spring (10) is fixedly connected, and the other end of the extension spring (10) is fixedly connected with the side of connecting rod (8), the company
The other side of extension bar (8) is fixed with several helical teeth (15), and the other end of the connecting rod (8) is equipped with fixed link (9), described
Fixed link (9) surface offers sliding slot (13), and the connecting rod (8) is slidably connected with sliding slot (13), in the sliding slot (13)
Top and bottom are fixed with the second pin (12), and two second pins (12) pass through reset spring and buckle (14)
One end of rotation connection, the buckle (14) is in contact with the side of helical teeth (15).
2. tensioning device for transmission chain according to claim 1, which is characterized in that two tensioning wheels (4) and chainlet
The spacing of (2) is taken turns less than the spacing with big sprocket wheel (1).
3. tensioning device for transmission chain according to claim 1, which is characterized in that the rotating bar (6) and connecting rod (8)
Between angle less than 90 °.
4. tensioning device for transmission chain according to claim 1, which is characterized in that the inclination angle of described buckle (14) one end
It spends identical as the tilt angle of helical teeth (15) side.
5. tensioning device for transmission chain according to claim 1, which is characterized in that the surface of the tensioning wheel (4) is fixed
Equipped with chain (3) the intermeshing gear teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820837621.9U CN208503378U (en) | 2018-05-30 | 2018-05-30 | A kind of tensioning device for transmission chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820837621.9U CN208503378U (en) | 2018-05-30 | 2018-05-30 | A kind of tensioning device for transmission chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208503378U true CN208503378U (en) | 2019-02-15 |
Family
ID=65287757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820837621.9U Active CN208503378U (en) | 2018-05-30 | 2018-05-30 | A kind of tensioning device for transmission chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208503378U (en) |
-
2018
- 2018-05-30 CN CN201820837621.9U patent/CN208503378U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106428400B (en) | Bicycle chain puller | |
| DE102016012782A1 (en) | Electric power steering device | |
| US20140326089A1 (en) | Actuator having buffer structure | |
| US20090133980A1 (en) | Torque-Limiting Connector | |
| CN108644327A (en) | A kind of special tensioning device for transmission chain | |
| CN208503378U (en) | A kind of tensioning device for transmission chain | |
| CN104100630B (en) | Electronic device with pivoting mechanism capable of providing different torque outputs | |
| WO2009054185A1 (en) | Device for folding body ply | |
| CN100406340C (en) | Actuator device and relative nut for a bicycle gearshift, with an elastically yielding member | |
| CN204477218U (en) | A kind of automatic belt tensioning device | |
| CN102319168B (en) | Massaging device with multiple massaging manipulations | |
| US8951167B2 (en) | Anti-drift mechanism for treadmill | |
| DE102013004966A1 (en) | Electric bicycle derailleur, has multi-joint comprising linkage that includes first linkage element, which is pivotally connected to movable element, and second linkage element that is pivotally connected to base element | |
| CN111195876B (en) | Synchronous fastening device | |
| CN106671113A (en) | Translational motion idle-stroke transmission coupled and self-adaptive robot finger device | |
| CN103921238B (en) | Three-jaw clamp | |
| CN108216350B (en) | Steering column rack pinion group and steering column regulating mechanism and vehicle | |
| CN212763529U (en) | Mechanical clamping jaw for stably clamping workpiece | |
| KR101230218B1 (en) | return spring of clutch pedal for automobile | |
| CN210061164U (en) | Bidirectional grabbing and triggering self-adaptive robot finger device | |
| CN209491761U (en) | A kind of robot synchronous belt mounting structure | |
| CN208345428U (en) | One flocked material stretcher | |
| CN209614632U (en) | Reinforcement welding movement and transmission mechanism | |
| US20160136788A1 (en) | Work apparatus | |
| CN203627697U (en) | Tensioning device and synchronous belt driving mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |