CN203627697U - Tensioning device and synchronous belt driving mechanism - Google Patents

Tensioning device and synchronous belt driving mechanism Download PDF

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Publication number
CN203627697U
CN203627697U CN201320892739.9U CN201320892739U CN203627697U CN 203627697 U CN203627697 U CN 203627697U CN 201320892739 U CN201320892739 U CN 201320892739U CN 203627697 U CN203627697 U CN 203627697U
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CN
China
Prior art keywords
synchronous belt
spring
tension
tension device
tensioning
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Expired - Fee Related
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CN201320892739.9U
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Chinese (zh)
Inventor
陈文华
张兴明
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Zhejiang Dahua Technology Co Ltd
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Zhejiang Dahua Technology Co Ltd
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Priority to CN201320892739.9U priority Critical patent/CN203627697U/en
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Abstract

The utility model relates to the technical field of mechanical driving and discloses a tensioning device and a synchronous belt driving mechanism. The tensioning device comprises a tensioning arm with a pivoting locating hole capable of being connected with a locating column of the synchronous belt driving mechanism in a pivoting mode, a tensioning shaft fixedly connected with the tensioning arm, a tensioning wheel connected with the tensioning shaft in a pivoting mode and a spring. The spring comprises a fixed end and a stretching end. The stretching end of the spring is fixedly connected with the tensioning arm. Under the elasticity effect of the spring, the surface of the tensioning wheel butts against a synchronous belt of the synchronous belt driving mechanism. By means of the synchronous belt driving mechanism comprising the tensioning device, the synchronous belt can keep tensioned during operation, driving capacity of the synchronous belt is improved, and the reliability of the synchronous belt driving is improved.

Description

A kind of tension device and a kind of synchronous belt drive mechanism
Technical field
The utility model relates to mechanical transmissioning technology field, relates in particular to a kind of tension device and a kind of synchronous belt drive mechanism.
Background technique
With simple in structure, the stable drive of transmission, can cushion absorbing, can be between large distance between shafts and multiaxis transferring power, and it is cheap, do not need to lubricate, safeguard that easily particularly toothed belt transmission, in transmission process, between Timing Belt and belt wheel without relative sliding, there is velocity ratio constant, accurate, and transmission efficiency is compared with advantages of higher, applies more extensive in mechanical transmission.
The defect of existing synchronous belt drive mechanism is, Timing Belt may occur relaxation phenomenon after long-play, and at this moment toothed belt transmission ability declines, and the reliability of transmission is reduced.
Model utility content
The purpose of this utility model is to provide a kind of tension device and a kind of synchronous belt drive mechanism, so that Timing Belt when operation keeps tensioning, improves the transmission capacity of Timing Belt, and then improves the reliability of toothed belt transmission.
In order to achieve the above object, the utility model embodiment provides following technological scheme:
A kind of tension device, comprising: tension arms, there is pivot dress positioning hole, and described pivot dress positioning hole is connected in the locating column of synchronous belt drive mechanism pivotly;
The tensioning shaft being fixedly connected with described tension arms;
Be pivotally connected to the Idle wheel in described tensioning shaft;
Spring, comprises fixed end and telescopic end, and the telescopic end of described spring is fixedly connected with described tension arms, under the elastic force effect of described spring, and the Timing Belt butt of the surface of described Idle wheel and described synchronous belt drive mechanism.
Preferably, described tension arms comprises two link arms that are mutually angle, and wherein, described pivot dress positioning hole is positioned at the angle root of described two link arms; Described tensioning shaft is fixedly connected with described two link arms respectively with the telescopic end of described spring.
Preferably, the telescopic end of described spring is between described pivot dress positioning hole and described tensioning shaft.
Preferably, this tension device also comprises: fastening piece, described tension wheel shaft is to being limited between described fastening piece and described tension arms, can make to install simple and convenient, thereby enhance productivity.
Preferably, the width of described Idle wheel is not less than the width of described Timing Belt.
In synchronous belt drive mechanism course of action, can provide enough intensity that Timing Belt is pushed against, thereby reduce Timing Belt relaxing after long-play, improve the transmission capacity of Timing Belt.
Preferably, described Idle wheel is at least one bearing that is installed in described tensioning shaft.
Adopt bearing as Idle wheel, can reduce widely the frictional force between Idle wheel and tensioning shaft, effectively improve the tensioning ability of tension device.
A kind of synchronous belt drive mechanism, comprise: shell, be positioned at the motor of described enclosure, be sheathed on the driving wheel on the output shaft of described motor, Timing Belt and follower, described follower is in transmission connection by described Timing Belt and described driving wheel, described synchronous belt drive mechanism also comprises: the tension device as described in aforementioned arbitrary technological scheme, wherein, described enclosure is provided with locating column, and the fixed end of described spring is fixedly connected with described shell.
In technical solutions of the utility model, the tensioning shaft of tension device is fixedly connected with tension arms, Idle wheel is installed on tensioning shaft, the telescopic end of spring is fixedly connected with tension arms, when this tension device is installed on to synchronous belt drive mechanism, tension arms fills positioning hole by pivot and is pivotally connected to the locating column in synchronous belt drive mechanism, the fixed end of spring is fixedly connected with shell, the elastic force effect of spring can regulate tension device automatically, thereby the surface of Idle wheel is connected all the time with Timing Belt, by Timing Belt tensioning, effectively improve the transmission capacity of Timing Belt after long-play, and then the reliability of raising transmission.
Accompanying drawing explanation
Fig. 1 is the utility model tension device the first embodiment's plan structure schematic diagram;
Fig. 2 is the utility model tension device one embodiment's part-structure decomposing schematic representation;
Fig. 3 is the utility model tension device the second embodiment's plan structure schematic diagram;
Fig. 4 is the utility model tension device the 3rd embodiment's plan structure schematic diagram;
Fig. 5 is the utility model tension device the 4th embodiment's plan structure schematic diagram;
Fig. 6 is the utility model tension device one embodiment's part-structure schematic perspective view;
Fig. 7 is not one embodiment's perspective view when installation tensioner of the utility model synchronous belt drive mechanism;
Fig. 8 is the utility model synchronous belt drive mechanism one embodiment's perspective view.
Reference character:
11-tension arms 12-tensioning shaft
13-Idle wheel 14-spring
15-pivot dress positioning hole 16-spring mounting hole
2-shell 3-motor
4-Timing Belt 5-follower
6-fastening piece 71-locating column
72-fixing column 141-fixed end
142-telescopic end
Embodiment
The utility model embodiment's object is to provide a kind of tension device and a kind of synchronous belt drive mechanism, so that Timing Belt keeps tensioning in the time of operation, improves the transmission capacity of Timing Belt, and then improves the reliability with transmission.The tension device that the utility model embodiment provides, the telescopic end of spring is fixedly connected with tension arms, when this tension device is installed on to synchronous belt drive mechanism, tension arms fills positioning hole by pivot and is pivotally connected to the locating column in synchronous belt drive mechanism, the fixed end of spring is fixedly connected with shell, the elastic force effect of spring can regulate tension device automatically, thereby the surface of Idle wheel is connected all the time with Timing Belt, by Timing Belt tensioning, effectively improve the transmission capacity of Timing Belt after long-play, and then improve the reliability of transmission.
For making the purpose of this utility model, technological scheme and advantage clearer, by the following examples the utility model is described in further detail.
As shown in Fig. 1~Fig. 5 and Fig. 8, wherein, Fig. 1 is the utility model tension device the first embodiment's plan structure schematic diagram; Fig. 2 is the utility model tension device one embodiment's part-structure decomposing schematic representation; Fig. 3 is the utility model tension device the second embodiment's plan structure schematic diagram; Fig. 4 is the utility model tension device the 3rd embodiment's plan structure schematic diagram; Fig. 5 is the utility model tension device the 4th embodiment's plan structure schematic diagram; Fig. 8 is the utility model synchronous belt drive mechanism one embodiment's perspective view.
The tension device 1 that the utility model embodiment provides comprises:
Tension arms 11, has pivot dress positioning hole 15, and pivot dress positioning hole 15 is connected in the locating column 71 of synchronous belt drive mechanism pivotly;
The tensioning shaft 12 being fixedly connected with tension arms 11;
Be pivotally connected to the Idle wheel 13 in tensioning shaft 11;
Spring 14, comprises fixed end 141 and telescopic end 142, and the telescopic end 142 of spring 14 is fixedly connected with tension arms 11, under the elastic force effect of spring 14, and the surface of Idle wheel 13 and the Timing Belt of synchronous belt drive mechanism 4 butts.
The means of fixation of tensioning shaft and tension arms has multiple, for example, be welded and fixed, and riveted joint is fixing, is threaded fixing etc., is not specifically limited at this.Concrete, can realize tension arms can have around the equipped form of the pivot dress positioning hole of locating column pivotable and locating column multiplely, and for example, locating column can be Step Shaft, and pivot fills positioning hole and Step Shaft employing Spielpassung, is directly socketed on Step Shaft; As shown in Figure 8, can adopt screw to pass pivot dress positioning hole and lock in advance with locating column, certainly, screw can adopt bearing pin replacement.
With reference to Fig. 1, shown in Fig. 3 and Fig. 8, as preferred embodiment of the present utility model, tension arms 11 comprises two link arms that are mutually angle, pivot dress positioning hole 15 is positioned at the angle root of two link arms, tensioning shaft 12 is fixedly connected with two link arms respectively with the telescopic end 142 of spring 14, be equivalent to, the tensioning shaft 12 of tension arms 11 and the portion that is fixedly connected with of link arm and the portion of being fixedly connected with of telescopic end 142 and link arm lay respectively at the both sides of pivot dress positioning hole 15, this tension device utilizes lever principle, under the effect of spring force by the surface of Idle wheel 13 and Timing Belt 4 butts, make Timing Belt 4 tensionings.
Shown in Fig. 4, Fig. 5 and Fig. 8, the telescopic end 142 of spring 14 is between pivot dress positioning hole 15 and tensioning shaft 12, being tensioning shaft 12 is positioned at the homonymy of pivot dress positioning hole 15 with the portion that is fixedly connected with of tension arms 11 and telescopic end 142 and the portion of being fixedly connected with of tension arms 11, under the effect of spring force, by the surface of Idle wheel 13 and Timing Belt 4 butts, make Timing Belt 4 tensionings.
It is multiple that the telescopic end of spring and the mode that is fixedly connected with of tension arms have, and for example, shown in Fig. 1, tension arms 11 has spring mounting hole 16, and the telescopic end 142 of spring 14 is fixedly connected with tension arms 11 at spring mounting hole 16 places.The telescopic end of spring directly penetrates spring mounting hole and achieves a fixed connection, make to install simple and convenient, thereby enhance productivity.
As shown in Figure 2, for Idle wheel 13 is installed on tensioning shaft 12, Idle wheel 13 in the axial direction with tensioning shaft 12 without relative sliding, the tension device that the utility model embodiment provides, also comprise: fastening piece 6, Idle wheel 13 axial limitings are between fastening piece 6 and tension arms 11.
One end of tensioning shaft 12 is fixedly connected with tension arms 11, for example riveted joint is fixing, Idle wheel 13 is sheathed on tensioning shaft 12, fastening piece 6 is screwed into tensioning shaft 12 one end away from tension arms, make the axial direction upper limit of Idle wheel 13 at tensioning shaft 12, in the time that tension device is vertically installed on synchronous belt drive mechanism, Idle wheel 13 can not drop.
For tension device can be pushed against the Timing Belt in synchronous belt drive mechanism effectively, shown in Fig. 6 and Fig. 8, in the utility model embodiment, the width of Idle wheel 13 is not less than the width of Timing Belt 4.In synchronous belt drive mechanism course of action, can provide enough intensity that Timing Belt is pushed against, thereby reduce Timing Belt relaxing after long-play, improve the transmission capacity of Timing Belt.
Shown in Fig. 2, the concrete form of Idle wheel 13 is not limit, the utility model Idle wheel 13 preferably adopts at least one bearing that is installed in tensioning shaft 12, and the concrete form of bearing is not limit, for example, be rolling bearing, the structure of rolling bearing comprises inner ring, outer ring and rolling element, inner ring is sheathed on tensioning shaft, outer ring and Timing Belt butt, therefore, can reduce widely the frictional force between Idle wheel and tensioning shaft, effectively improve the tensioning ability of tension device.
The concrete quantity of bearing is not limit, and the width that is not less than Timing Belt with the width of at least one bearing is as the criterion, and as shown in Figure 2, the quantity of bearing is two to example.
As Fig. 1, Fig. 7 and and Fig. 8 as shown in, the synchronous belt drive mechanism that the utility model embodiment provides comprises: shell 2, be positioned at the motor 3 of shell 2 inside, be sheathed on the driving wheel (not shown) on the output shaft of motor 3, Timing Belt 4 and follower 5, follower 5 is in transmission connection by Timing Belt 4 and driving wheel, and synchronous belt drive mechanism also comprises: the tension device providing as aforementioned arbitrary embodiment, wherein
Shell 2 inside are provided with locating column 71, and the fixed end 141 of spring 14 is fixedly connected with shell 2.
The synchronous belt drive mechanism that the utility model embodiment provides, the tensioning shaft of tension device is fixedly connected with tension arms, Idle wheel is pivotally connected on tensioning shaft, the telescopic end of spring is fixedly connected with tension arms, when this tension device is installed on to synchronous belt drive mechanism, tension arms fills positioning hole by pivot and is pivotally connected to the locating column in synchronous belt drive mechanism, the fixed end of spring is fixedly connected with shell, the elastic force effect of spring can regulate tension device automatically, thereby the surface of Idle wheel is connected all the time with Timing Belt, by Timing Belt tensioning, effectively improve the transmission capacity of Timing Belt after long-play, and then the reliability of raising transmission.
The elastic force of spring specifically according to the synchronous belt drive mechanism of different model and in Timing Belt allows lax scope Idle wheel can remain the pretightening force of the set positions of Timing Belt tensioning, example tension device as shown in Figure 1 and Figure 5, the pretightening force that spring is set is prefastening force, example tension device as shown in Figure 3 and Figure 4, the pretightening force that spring is set is preload pressure.
The fixed end 141 of spring 14 is fixedly connected with shell 2, in embodiment as shown in Figure 8, shell 2 inside of synchronous belt drive mechanism are provided with fixing column 72, and the fixed end 141 of spring 14 is fixedly connected with fixing column 72 by fastening piece 6, can simplify mounting process, enhance productivity.
Shown in Fig. 1, Fig. 7 and Fig. 8, in synchronous belt drive mechanism one embodiment, the concrete installation steps of tension device comprise: first the tension arms 11 of tension device is locked in tension arms 11 on locating column 71 by fastening piece 6 in advance at pivot dress positioning hole 15 places of the root that is positioned at two link arms that are mutually angle, tension arms can rotate around locating column 71; The fixed end 141 of spring is locked on fixing column 72 by fastening piece 6, spring 14 has the pretightening force of setting, when lax through long-play after synchronous belt drive mechanism tensioning, the reset of spring 14 makes the tension arms 11 of tension device rotate take locating column 71 as fulcrum, automatically regulate tension device, and then the surface of tensioning bearing is kept and Timing Belt butt, by Timing Belt tensioning, and then improve the reliability of transmission.
The effect of fastening piece is to realize being fixedly connected with of two component, can be pin, screw, bolt or double-screw bolt, because connecting, screw there is easy installation and removal, fastening piece 6 in the embodiment that the utility model provides preferably adopts screw, specifically not limitting, for example, is fastening screw trip bolt by the fastening piece of Idle wheel axial limiting 6, the fastening piece 6 coordinating with pivot dress positioning hole, for polished rod screw, is Cock screw for the fixed end of linking springs and the fastening piece of fixing column 6.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.

Claims (7)

1. a tension device, is characterized in that, comprising:
Tension arms (11), has pivot dress positioning hole (15), and described pivot dress positioning hole (15) is connected in the locating column (71) of synchronous belt drive mechanism pivotly;
The tensioning shaft (12) being fixedly connected with described tension arms (11);
Be pivotally connected to the Idle wheel (13) in described tensioning shaft (12);
Spring (14), comprise fixed end (141) and telescopic end (142), the telescopic end (142) of described spring (14) is fixedly connected with described tension arms (11), under the elastic force effect of described spring (14), Timing Belt (4) butt of the surface of described Idle wheel (13) and described synchronous belt drive mechanism.
2. tension device as claimed in claim 1, is characterized in that,
Described tension arms (11) comprises two link arms that are mutually angle, and wherein, described pivot dress positioning hole (15) is positioned at the angle root of described two link arms; Described tensioning shaft (12) is fixedly connected with described two link arms respectively with the telescopic end (142) of described spring (14).
3. tension device as claimed in claim 1, is characterized in that, the telescopic end (142) of described spring (14) is positioned between described pivot dress positioning hole (15) and described tensioning shaft (12).
4. tension device as claimed in claim 1, is characterized in that, also comprises: fastening piece (6), described Idle wheel (13) axial limiting is between described fastening piece (6) and described tension arms (11).
5. the tension device as described in as arbitrary in claim 1~4, is characterized in that, the width of described Idle wheel (13) is not less than the width of described Timing Belt (4).
6. tension device as claimed in claim 5, is characterized in that, described Idle wheel (13) is for being installed at least one bearing of described tensioning shaft (12).
7. a synchronous belt drive mechanism, comprising:
Shell (2), be positioned at the inner motor (3) of described shell (2), be sheathed on the driving wheel on the output shaft of described motor (3), Timing Belt (4) and follower (5), described follower (5) is in transmission connection by described Timing Belt (4) and described driving wheel, it is characterized in that, described synchronous belt drive mechanism also comprises: the tension device as described in as arbitrary in claim 1~6, wherein
Described shell (2) inside is provided with locating column (71), and the fixed end (141) of described spring (14) is fixedly connected with described shell (2).
CN201320892739.9U 2013-12-30 2013-12-30 Tensioning device and synchronous belt driving mechanism Expired - Fee Related CN203627697U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320892739.9U CN203627697U (en) 2013-12-30 2013-12-30 Tensioning device and synchronous belt driving mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320892739.9U CN203627697U (en) 2013-12-30 2013-12-30 Tensioning device and synchronous belt driving mechanism

Publications (1)

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CN203627697U true CN203627697U (en) 2014-06-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104832611A (en) * 2015-04-10 2015-08-12 浙江亚特电器有限公司 Tool-free automatic tensioning system
CN106695974A (en) * 2016-12-22 2017-05-24 浙江大祥办公设备有限公司 Book positioning rotating device of three-side paper cutting machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104832611A (en) * 2015-04-10 2015-08-12 浙江亚特电器有限公司 Tool-free automatic tensioning system
CN104832611B (en) * 2015-04-10 2017-06-13 浙江亚特电器有限公司 A kind of tool-free auto-tensioning system
CN106695974A (en) * 2016-12-22 2017-05-24 浙江大祥办公设备有限公司 Book positioning rotating device of three-side paper cutting machine

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140604

Termination date: 20201230

CF01 Termination of patent right due to non-payment of annual fee