CN204852203U - Chassis dynamometer and overspeed device tensioner thereof - Google Patents

Chassis dynamometer and overspeed device tensioner thereof Download PDF

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Publication number
CN204852203U
CN204852203U CN201520326930.6U CN201520326930U CN204852203U CN 204852203 U CN204852203 U CN 204852203U CN 201520326930 U CN201520326930 U CN 201520326930U CN 204852203 U CN204852203 U CN 204852203U
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China
Prior art keywords
tension roller
support
bolt
adjustment bolt
tension
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CN201520326930.6U
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Chinese (zh)
Inventor
常其
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Henan Wanguo Technology Co Ltd
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Henan Wanguo Technology Co Ltd
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Priority to CN201520326930.6U priority Critical patent/CN204852203U/en
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Abstract

The utility model discloses a chassis dynamometer and overspeed device tensioner thereof. The bolt hole that the pole portion that supplies adjusting bolt of seting up on overspeed device tensioner's the support was passed, adjusting bolt top spin be equipped with with support block complex lock nut, and when the tight side towards the bracket of tightener sheave, the locking bolt is at one side of the tightener sheave dorsad of support, when the tight side of tightener sheave dorsad during the support, the locking bolt is in one side towards the tightener sheave of support. When internal thread in lock nut takes place to damage, only need pull down lock nut from adjusting bolt's pole portion, just can realize the correction to whole overspeed device tensioner, compare among the prior art and to follow the condition that the frame was pulled down with whole support, the utility model discloses well overspeed device tensioner reduce to overhaul in -process spare part the loss, also reduced the loss of material.

Description

A kind of chassis dynamometer and tension device thereof
Technical field
The utility model relates to a kind of chassis dynamometer and tension device thereof.
Background technique
Chassis dynamometer is ensure drive roll and follower rollers rotating speed consistent, all be connected by Timing Belt with synchronous pulley between driving and driven cylinder, Timing Belt due to various material is not elastomer completely, under the effect of pretightening force, after the running of certain hour, will relax due to plastic deformation, initial tension is reduced.In order to ensure the efficiency of V belt translation, the numerical value of initial tension should be made regular check on.During as found deficiency, necessary re-tensioning, could normally work.Modal firmly beforehand means changes the centre distance between driving and driven cylinder, but along with the increase of centre distance, the angle of setting of automotive wheel increases thereupon, the supporting force of front and back two row cylinders to wheel also increases thereupon, like this operation rolling resistance causing vehicle on the merit machine frame of side is increased, so the centre distance of dynamometer roller can not regulate, tensioning mechanism now can be adopted Timing Belt tensioning.If the Chinese patent literature CN202158153U(day for announcing is on March 7th, 2012) disclosed a kind of Idle wheel, comprise the adjustment bolt being fixed on the support in frame by sunk screw and vertically extending, the screw top of adjustment bolt is connected in frame, the bottom of adjustment bolt connects mobile plate, the left and right sides of mobile plate respectively along the vertical direction guiding movement be assemblied in the chute that pressing plate and frame surround, and on mobile plate, be fixed with flat rubber belting wheel shaft, by bearing assemble tension roller on flat rubber belting wheel shaft, in use, adjustment bolt screw and unscrew drive mobile plate to move up and down in chute, to adjust the extruding force between tension roller and Timing Belt, make Timing Belt re-tensioning.But the location between this tension device and frame relies on the guarantee that is threaded on adjustment bolt and support completely, namely adjust the tooth form of the connecting thread between bolt and support by the pretightening force of carrying tension roller pretension, the tooth form injuring speed of connecting thread is accelerated, and the connecting thread on support is directly in the attachment hole offered disposed thereon, so adjust bolt and support be threaded occur loosening or the situation of damage time, support must disassemble from frame and change, the mode that this whole support directly changes not only increases raw-material loss, and after support is pulled down, the top of adjustment bolt will realize spacing, like this after new support is reinstalled, new support and adjustment bolt need positioned in alignment again, thus increase the difficulty of tension device maintenance, reduce the efficiency of tension device maintenance.
Model utility content
The purpose of this utility model is to provide a kind of tension device reducing spillage of material in maintenance process, and the utility model additionally provides a kind of chassis dynamometer using this tension device simultaneously.
In order to realize above object, in the utility model, the technological scheme of tension device is as follows:
Tension device, comprise for the tension roller of tensioning Timing Belt, for driving tension roller relative to the adjustment bolt of machine frame movement and for being fixed on the support in frame, tension roller has for contacting and oppressing the advancing side of the zone face of Timing Belt, the direction that advancing side screws towards adjustment bolt, support offers the bolt through-hole passed for the bar portion adjusting bolt, adjustment bolt is installed with the locking nut coordinated with support block, and when tension roller advancing side towards support time, lock bolt is in the side of the tension roller dorsad of support; When tension roller advancing side dorsad support time, lock bolt is in the side towards tension roller of support.
Be provided with the mobile plate for being assemblied in along the axially directed movement of adjustment bolt in frame between tension roller and adjustment bolt, tension roller rotates and is assemblied on mobile plate, and adjustment bolt and mobile plate are connected.
Mobile plate offers along the adjustment axially extended guiding groove of bolt or hole.
Support comprises the stiffening plate be fixed in frame and the fixed block be fixed on stiffening plate, and described bolt through-hole is on fixed block, fixing or be integrally formed with the directional post be inserted into along the axially directed movement of adjustment bolt in described guiding groove or hole on stiffening plate.
Tension roller is rotated by wheel shaft and is assemblied on mobile plate, and one end of wheel shaft is fixed on mobile plate, the other end is installed in the endoporus of tension roller, is equipped with bearing between wheel shaft and tension roller.
In the utility model, the technological scheme of chassis dynamometer is as follows:
Chassis dynamometer, comprise the tape handler of frame and upper setting thereof, tension device, tape handler comprises master, driven pulley and be connected to master, Timing Belt between driven pulley, tension device comprises the tension roller for tensioning Timing Belt, for driving tension roller relative to the adjustment bolt of machine frame movement and for being fixed on the support in frame, tension roller has for contacting and oppressing the advancing side of the zone face of Timing Belt, the direction that advancing side screws towards adjustment bolt, support offers the bolt through-hole passed for the bar portion adjusting bolt, adjustment bolt is installed with the locking nut coordinated with support block, and when the advancing side of tension roller is towards support, lock bolt is in the side of the tension roller dorsad of support, when tension roller advancing side dorsad support time, lock bolt is in the side towards tension roller of support.
Be provided with the mobile plate for being assemblied in along the axially directed movement of adjustment bolt in frame between tension roller and adjustment bolt, tension roller rotates and is assemblied on mobile plate, and adjustment bolt and mobile plate are connected.
Mobile plate offers along the adjustment axially extended guiding groove of bolt or hole.
Support comprises the stiffening plate be fixed in frame and the fixed block be fixed on stiffening plate, and described bolt through-hole is on fixed block, fixing or be integrally formed with the directional post be inserted into along the axially directed movement of adjustment bolt in described guiding groove or hole on stiffening plate.
Tension roller is rotated by wheel shaft and is assemblied on mobile plate, and one end of wheel shaft is fixed on mobile plate, the other end is installed in the endoporus of tension roller, is equipped with bearing between wheel shaft and tension roller.
The utility model medium-height trestle offers the bolt through-hole passed for the bar portion adjusting bolt, adjustment bolt is installed with the locking nut coordinated with support block, and when tension roller advancing side towards support time, lock bolt is in the side of the tension roller dorsad of support; When tension roller advancing side dorsad support time, lock bolt is in the side towards tension roller of support.In use, by changing the bar portion present position of locking nut at adjustment bolt, realize adjustment screw rod stretching on support, tension roller is driven to move by adjustment bolt again, in the process, rely between adjustment bolt and lock nut be threaded and block between locking nut and support coordinates and realizes adjusting flexible adjustable relative to support of bolt, and the internal thread in locking nut is when being damaged, only the bar portion of locking nut from adjustment bolt need be pulled down, just can realize the correction to whole tension device, situation about being pulled down from frame by whole support is needed compared to existing technology, in the utility model, tension device reduces the loss of component in maintenance process, decrease the loss of material.
Accompanying drawing explanation
Fig. 1 is the structural representation of drive part in the embodiment of chassis dynamometer of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
The embodiment of chassis dynamometer in the utility model: as depicted in figs. 1 and 2, this chassis dynamometer comprise frame 1 and on the cylinder 17 that assembled by bearing support, cylinder 17 pairs of wheels play the effect of supplemental support and friction driving, the axle head of cylinder 17 connects synchronous pulley 2 by flat key, connect with Timing Belt 4 between two synchronous pulleys 2, because Timing Belt 4 is generally all made up of rubber and cord, under the effect of pretightening force, after the running of certain hour, Timing Belt 4 will relax due to plastic deformation, Timing Belt 4 is made to produce vibration, reduce the efficiency of Timing Belt 4 transmission simultaneously, therefore, general meeting adds a tension device when toothed belt transmission.In the present embodiment, tension device forms primarily of tensioning wheel assembly 7, locking nut 3, fixed block 5, screw 6, stiffening plate 8, welded nut 15 and channel-section steel 16.Tensioning wheel assembly 7 is made up of adjustment bolt 9, jump ring 10, tension wheel shaft 11, rolling bearing 12, tension roller 13 and mobile plate 14.Channel-section steel 16 is welded on above integral support 1, and fixed block 5 and stiffening plate 8 are welded on channel-section steel 16, have a circular hole in the middle of stiffening plate 8, aperture is a little large than the external diameter of screw 6, welded nut 15 is soldered to the circular hole back side of stiffening plate 8, and screw 6 is tightened onto on welded nut 15 through mobile plate 14; Also have the bolt through-hole of a circle in the middle of fixed block 5, the aperture of bolt through-hole is more bigger than the external diameter of adjustment bolt 9, and the adjustment bolt 9 in tensioning wheel assembly 7 is connected with locking nut 3 through circular hole.Tension wheel shaft 11 is welded on mobile plate 14, tension roller 13 both sides are pressed with two rolling bearings 12, tension roller 13 is supported on tension wheel shaft 11 by rolling bearing 12, a back-up ring 10 is had outside rolling bearing 12, back-up ring 10 prevents tension roller 13 and rolling bearing 12 from departing from tension wheel shaft 11, tension roller 13 can rotate freely around tension wheel shaft 11, Timing Belt 4 and tension roller 13 cylindrical connecting part belong to rolling friction, do not affect the transmission efficiency of Timing Belt 4, namely tension roller 13 utilizes its part turning to upside contact with the zone face of Timing Belt 4 and upwards oppress Timing Belt 4, be for contacting and oppressing the advancing side of the zone face of Timing Belt to make the upper portion of tension roller 13.
When Timing Belt 4 is because of plastic deformation during slacken, unclamp screw 6, tensioning wheel assembly 7 can be moved up and down freely, the event trace of tensioning wheel assembly 7 is limited by the circular hole on two of mobile plate 14 guide chutes and fixed block 5, namely screw 6 can be tightened on guide chute, realize locating the bottom of mobile plate 14, and adjust bolt 9 and be positioned on fixed block 5 by locking nut 3, realize locating the top of mobile plate 14.Now, screw locking nut 3, tensioning wheel assembly 7 is moved upward, make Timing Belt 4 re-tensioning, simultaneously lock screw 6, complete the adjustment of tension device, chassis dynamometer can be started working.
In the above-described embodiments, locking nut is in the side of the tension roller dorsad of fixed block, in other embodiments, when tension roller advancing side dorsad fixed block time, lock bolt is in the side towards tension roller of fixed block.
In the above-described embodiments, the support of fixed block, stiffening plate and channel-section steel composition tension device connection frame, in other embodiments, in this support, stiffening plate and channel-section steel also can save, only retain fixed block, now the guiding movement up and down of mobile plate can be removed directly to coordinate with frame and realize.
The embodiment of tension device in the utility model: in the present embodiment, the structure of tension device is identical with the structure of tension device in above-described embodiment, therefore repeats no more.

Claims (10)

1. tension device, comprise the tension roller for tensioning Timing Belt, for driving tension roller relative to the adjustment bolt of machine frame movement and for being fixed on the support in frame, tension roller has for contacting and oppressing the advancing side of the zone face of Timing Belt, the direction that advancing side screws towards adjustment bolt, it is characterized in that, support offers the bolt through-hole passed for the bar portion adjusting bolt, adjustment bolt is installed with the locking nut coordinated with support block, and when the advancing side of tension roller is towards support, lock bolt is in the side of the tension roller dorsad of support, when tension roller advancing side dorsad support time, lock bolt is in the side towards tension roller of support.
2. tension device according to claim 1, it is characterized in that, be provided with the mobile plate for being assemblied in along the axially directed movement of adjustment bolt in frame between tension roller and adjustment bolt, tension roller rotates and is assemblied on mobile plate, and adjustment bolt and mobile plate are connected.
3. tension device according to claim 2, is characterized in that, mobile plate offers along the adjustment axially extended guiding groove of bolt or hole.
4. tension device according to claim 3, it is characterized in that, support comprises the stiffening plate be fixed in frame and the fixed block be fixed on stiffening plate, described bolt through-hole is on fixed block, fixing or be integrally formed with the directional post be inserted into along the axially directed movement of adjustment bolt in described guiding groove or hole on stiffening plate.
5. tension device according to claim 2, it is characterized in that, tension roller is rotated by wheel shaft and is assemblied on mobile plate, and one end of wheel shaft is fixed on mobile plate, the other end is installed in the endoporus of tension roller, is equipped with bearing between wheel shaft and tension roller.
6. chassis dynamometer, comprise the tape handler of frame and upper setting thereof, tension device, tape handler comprises master, driven pulley and be connected to master, Timing Belt between driven pulley, tension device comprises the tension roller for tensioning Timing Belt, for driving tension roller relative to the adjustment bolt of machine frame movement and for being fixed on the support in frame, tension roller has for contacting and oppressing the advancing side of the zone face of Timing Belt, the direction that advancing side screws towards adjustment bolt, it is characterized in that, support offers the bolt through-hole passed for the bar portion adjusting bolt, adjustment bolt is installed with the locking nut coordinated with support block, and when the advancing side of tension roller is towards support, lock bolt is in the side of the tension roller dorsad of support, when tension roller advancing side dorsad support time, lock bolt is in the side towards tension roller of support.
7. chassis dynamometer according to claim 6, it is characterized in that, be provided with the mobile plate for being assemblied in along the axially directed movement of adjustment bolt in frame between tension roller and adjustment bolt, tension roller rotates and is assemblied on mobile plate, and adjustment bolt and mobile plate are connected.
8. chassis dynamometer according to claim 7, is characterized in that, mobile plate offers along the adjustment axially extended guiding groove of bolt or hole.
9. chassis dynamometer according to claim 8, it is characterized in that, support comprises the stiffening plate be fixed in frame and the fixed block be fixed on stiffening plate, described bolt through-hole is on fixed block, fixing or be integrally formed with the directional post be inserted into along the axially directed movement of adjustment bolt in described guiding groove or hole on stiffening plate.
10. chassis dynamometer according to claim 7, it is characterized in that, tension roller is rotated by wheel shaft and is assemblied on mobile plate, and one end of wheel shaft is fixed on mobile plate, the other end is installed in the endoporus of tension roller, is equipped with bearing between wheel shaft and tension roller.
CN201520326930.6U 2015-05-20 2015-05-20 Chassis dynamometer and overspeed device tensioner thereof Active CN204852203U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520326930.6U CN204852203U (en) 2015-05-20 2015-05-20 Chassis dynamometer and overspeed device tensioner thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520326930.6U CN204852203U (en) 2015-05-20 2015-05-20 Chassis dynamometer and overspeed device tensioner thereof

Publications (1)

Publication Number Publication Date
CN204852203U true CN204852203U (en) 2015-12-09

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017113552A1 (en) * 2015-12-30 2017-07-06 深圳市全印图文技术有限公司 Belt tensioning apparatus and belt driving apparatus
CN112481775A (en) * 2020-12-07 2021-03-12 中国科学院宁波材料技术与工程研究所 Active let-off device and method of three-dimensional loom

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017113552A1 (en) * 2015-12-30 2017-07-06 深圳市全印图文技术有限公司 Belt tensioning apparatus and belt driving apparatus
CN112481775A (en) * 2020-12-07 2021-03-12 中国科学院宁波材料技术与工程研究所 Active let-off device and method of three-dimensional loom

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