CN203796874U

CN203796874U - Tensioning device with pressure compensation

Info

Publication number: CN203796874U
Application number: CN201420163085.0U
Authority: CN
Inventors: 刘丙炎
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-04
Filing date: 2014-04-04
Publication date: 2014-08-27
Anticipated expiration: 2024-04-04

Abstract

The utility model relates to a synchronous belt tensioning device with pressure compensation. The tensioning device is used for a tensioning belt, a synchronous belt, a chain and the like in mechanical drive and comprises a tensioning wheel, a tensioning wheel shaft, two torsional springs, a torsional spring pin shaft and a torsional spring support which are all arranged under the synchronous belt. The torsional spring support is formed by a side plate perpendicular to the synchronous belt and a base plate parallel to the synchronous belt, the side plate is perpendicularly and fixedly connected with one end of the base plate which is fixed on a wallboard, the torsional spring pin shaft is perpendicularly arranged on the side plate, the torsional springs sleeve the torsional spring pin shaft, the tensioning wheel sleeves the tensioning wheel shaft, two first torsional spring through holes are arranged in the tensioning wheel shaft at two ends of the tensioning wheel, two second torsional spring through holes are arranged in the base plate, two arms of the torsional springs are respectively fixed in the first torsional spring through holes and the second spring torsional spring through holes, and the arms of the torsional springs are perpendicularly arranged. The tensioning device is simple in structure, convenient to regulate, high in reliability and good in practical effect; deformation of the belt and abrasion of the chain are automatically compensated by the aid of elasticity of the torsional springs, situations of belt slipping, tooth skipping and releasing of the synchronous and loosening and wearing of the chain during use are avoided, and service life of the chain can be effectively prolonged.

Description

One has pressure compensated tension device

Technical field

The utility model relates to one and has pressure compensated synchronous belt tension device, for the tensioning of mechanical transmission belt, Timing Belt, chain etc.

Background technique

Traditional tensioning method adopts fixed tensioning, carry out tensioning by regulating the centre distance between driving wheel and driven wheel, this tensioning mode is easy to be subject to the restriction of installing space, and along with long use, belt, Timing Belt or chain there will be wearing and tearing, the distortion of different Cheng Du, there will be loosening phenomenon, cause belt slippage, Timing Belt is jumped tooth, de-tooth, makes chain wear more serious.

Summary of the invention

The purpose of this utility model is to overcome deficiency of the prior art and provides one to have pressure compensated tension device, and this apparatus structure is simple, easy to adjust, and reliability is high, good practical effect.

The purpose of this utility model is achieved in that

One has pressure compensated tension device, comprise the expansion tightening wheel that is arranged in Timing Belt below, tensioner wheel shaft, two torsion springs, torsion spring bearing pin and torsion spring support, described torsion spring support is made up of with the base plate parallel with Timing Belt the side plate vertical with Timing Belt, described side plate is fixedly connected with one end of base plate is vertical, described base plate is fixed on wallboard, described torsion spring bearing pin is arranged vertically on side plate, described two torsion springs and torsion spring bearing pin suit, described expansion tightening wheel and expansion tightening wheel axle sleeve dress, on the tensioner wheel shaft at described expansion tightening wheel two ends, be provided with two torsion spring perforation one, on described base plate, be provided with two torsion spring perforation two, two arms of two described torsion springs are fixed in torsion spring perforation one and torsion spring perforation two respectively, two arms of described torsion spring are vertical setting.

Based on the above, described torsion spring support is installed on wallboard by fixed plate, is provided with at least two skewed slots on described fixed plate, and the intermediate portion of skewed slot is provided with positioning hole.

Based on the above, the end of two arms of described torsion spring is also provided with the plug that forms plug-in mounting location with torsion spring perforation one and torsion spring perforation two, and described plug is vertical with two arms of torsion spring.

The utlity model has following advantage:

The beneficial effects of the utility model are, simple in structure, easy to adjust, reliability is high, good practical effect, rely on torsion spring self elastic automatic compensation band distortion, the wearing and tearing of chain, avoid in use belt slippage, Timing Belt to jump the de-tooth of tooth, chain-loose wear phenomenon, effectively played the working life of improving with chain.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Embodiment

Below in conjunction with specific embodiment, the utility model will be further described.

As shown in Figure 1, on wheel 1 and wheel 28, a Timing Belt 9 is installed, this tension device comprises the expansion tightening wheel 7 that is arranged in Timing Belt 9 belows, tensioner wheel shaft 6, two torsion springs 3, torsion spring bearing pin 5 and torsion spring support 2, described torsion spring support 2 is made up of with the base plate 2.2 parallel with Timing Belt 9 side plate 2.1 vertical with Timing Belt 9, vertical being fixedly connected with in one end of described side plate 2.1 and base plate 2.2, described base plate 2.2 is fixed on wallboard 1, described torsion spring support 2 is installed on wallboard 1 by fixed plate 2.3, the vertical connection of the other end of described fixed plate 2.3 and base plate 2.2, then fixed plate 2.3 is fixed on wallboard 1.

Described torsion spring bearing pin 5 is arranged vertically on side plate 2.1, described two torsion springs 3 are set with torsion spring bearing pin 5, described expansion tightening wheel 7 is set with tensioner wheel shaft 6, on the tensioner wheel shaft 6 at described expansion tightening wheel 7 two ends, be provided with two torsion spring perforation 1, on described base plate 2.2, be provided with two torsion spring perforation 2 11, two arms of two described torsion springs 3 are fixed in torsion spring perforation 1 and torsion spring perforation 2 11 respectively, the described tensioner wheel shaft 6 that is set with expansion tightening wheel 7 supports by the arm of two torsion springs 3, two arms of described torsion spring 3 are vertical setting, can better realize like this torsion of torsion spring 3, be unlikely to occur the poor situation of Timing Belt 9 tension effects due to the torsion of torsion spring excessive (two arm angles are less than 90 degree) or too small (two arm angles are greater than 90 degree).

Based on the above, on described fixed plate 2.3, be provided with at least two skewed slots 2.4, the intermediate portion of skewed slot 2.4 is provided with positioning hole 2.5, in positioning hole 2.5, be fixed the location of plate 2.3 on wallboard 1 by bearing pin, at a strut corresponding with skewed slot 2.4 of bearing pin end suit, so just can ensure that fixed plate 2.3 can not rotate along bearing pin, thereby realize the fixing of fixed plate 2.3, torsion spring support 2.

Based on the above, the end of two arms of described torsion spring 3 is also provided with the plug 12 that forms plug-in mounting location with torsion spring perforation 1 and torsion spring perforation 2 11, described plug 12 is vertical with two arms of torsion spring 3, the effect of the plug on 3 one arms of torsion spring is to support to the tensioner wheel shaft 6 that expansion tightening wheel 7 is housed, another arm is in order to be better positioned in the torsion spring perforation 2 11 on base plate 2.2, thereby ensures the vertical of two arms.

working principle:

Take turns 1 and install Timing Belt 9 with taking turns on 28, wherein take turns 1 and wheel 28 relative position constant, torsion spring support 2 is fixed on wallboard 1, and carry out pre-tensioner, when by torsion spring support 2, on wallboard 1, fixed hole clockwise rotates, torsion spring 3 produces torsion, be passed to torsion spring bearing pin 5, torsion spring bearing pin 5 drives expansion tightening wheel 7 to clockwise rotate around torsion spring bearing pin 5, to Timing Belt 9 tensionings, if tensioning tension, hole by torsion spring support 2 on wallboard 1 rotates counterclockwise, reduce the torsion of torsion spring 3, in like manner reduce the tensioning to Timing Belt 9, after pre-tensioner adjusting is moderate, expansion tightening wheel 7 produces certain tension to Timing Belt 9, along with long use, Timing Belt 9 can produce certain abrasion deformation, make Timing Belt 9 produce certain elongation, along with the height of Timing Belt 9, the torsion of torsion spring 3 reduces gradually, compensate the tensioning of Timing Belt 9 elongated portions, time Timing Belt 9 there is all the time tensioning, improve working life.

Claims

1. one kind has pressure compensated tension device, it is characterized in that: comprise the expansion tightening wheel (7) that is arranged in Timing Belt (9) below, tensioner wheel shaft (6), two torsion springs (3), torsion spring bearing pin (5) and torsion spring support (2), described torsion spring support (2) is made up of with the base plate (2.2) parallel with Timing Belt (9) the side plate (2.1) vertical with Timing Belt (9), described side plate (2.1) and vertical being fixedly connected with in one end of base plate (2.2), described base plate (2.2) is fixed on wallboard (1), described torsion spring bearing pin (5) is arranged vertically on side plate (2.1), described two torsion springs (3) and torsion spring bearing pin (5) suit, described expansion tightening wheel (7) and tensioner wheel shaft (6) suit, on the tensioner wheel shaft (6) at described expansion tightening wheel (7) two ends, be provided with two torsion spring perforation one (10), on described base plate (2.2), be provided with two torsion spring perforation two (11), two arms of described two torsion springs (3) are fixed in torsion spring perforation one (10) and torsion spring perforation two (11) respectively, two arms of described torsion spring (3) are vertical setting.

2. one according to claim 1 has pressure compensated tension device, it is characterized in that: described torsion spring support (2) is installed on wallboard (1) by fixed plate (2.3), on described fixed plate (2.3), be provided with at least two skewed slots (2.4), the intermediate portion of skewed slot (2.4) is provided with positioning hole (2.5).

3. one according to claim 1 has pressure compensated tension device, it is characterized in that: the end of two arms of described torsion spring (3) is also provided with the plug (12) that forms plug-in mounting location with torsion spring perforation one (10) and torsion spring perforation two (11), and described plug (12) is vertical with two arms of torsion spring (3).