CN204784511U - Permanent center distance from tensioning belt drive unit - Google Patents
Permanent center distance from tensioning belt drive unit Download PDFInfo
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- CN204784511U CN204784511U CN201520275493.XU CN201520275493U CN204784511U CN 204784511 U CN204784511 U CN 204784511U CN 201520275493 U CN201520275493 U CN 201520275493U CN 204784511 U CN204784511 U CN 204784511U
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- pulley support
- belt
- damper leg
- wheel
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Abstract
The utility model provides a permanent center distance from tensioning belt drive unit, belong to transmission design field, including last band pulley (1), band pulley (6) are installed and are connected through belt (7) in two of belt pulley support (2) down, it is connected through on bolt assembly and the belt pulley support (2) to go up band pulley (1), band pulley (6) are connected with belt pulley support (2) lower extreme through bolt assembly down, take -up pulley (4) are fixed on take -up pulley support (3) through bolt assembly, take -up pulley (4) set up between take -up pulley support (3) and bumper post subassembly (5). The utility model provides a permanent center distance from tensioning belt drive unit avoided external force straining device with the belt vibration transmission to the fuselage, alleviateed weight, the bumper post subassembly is scalable, and belt drive unit itself can adjust the undulant produced belt of load in real time and warp, reduces complete quick -witted vibration level.
Description
Technical field
The utility model relates to a kind of transmission device, in particular to a kind of fixed center distance from tightening belt transmission device.
Background technique
Current middle-size and small-size helicopter adopts reciprocating engine in a large number, and because engine output shaft line and reducer input shaft linear distance are large, belt drive unit becomes important component part indispensable in this type of Helicopter Transmission System.Belt drive unit, after running a period of time, can lose because of the plastic deformation of band and wearing and tearing, in order to ensure that belt transmission normally works, usually adopts tension device to regulate the working state of belt.Current belt stretcher mainly contains the tension device of regular tension device, automatic takeup, employing belt tensioner pulley.In order to ensure reliability, the spatial position of belt drive unit work, on helicopter, belt transmission generally adopts the tension device of belt tensioner pulley, and actuation mechanism is arranged on the outside of belt tensioning mechanism.
In prior art, a kind of typical fixed center square belt drive unit as shown in Figure 1, and the external force start tensioning mechanism of fixed center square belt drive unit has mechanical type and electrical actuation formula two kinds, is made up of forcelimiting mechanism, cable wire and actuator etc.This mechanism structure is complicated, with exterior part structure crosslinked complicated, installation weight is large, safeguards that inconvenience, reliability are low.Along with the development of Helicopter Technology, the requirement of Helicopter Transmission System is also more and more higher, has both needed its structure simple, lightweight, also needs to possess high reliability, Security, easy-maintenance etc.
Model utility content
The purpose of this utility model be solve above-mentioned deficiency of the prior art, provide a kind of simple and reasonable, installation weight is little, with external structure be cross-linked simple, easy to maintenance, that reliability is high fixed center distance from tightening belt transmission device.
The purpose of this utility model is achieved through the following technical solutions, a kind of fixed center distance from tightening belt transmission device, comprise: upper belt-wheel, pulley support, lower belt wheel, belt, also comprise tension pulley support, Idle wheel, damper leg assembly, wherein, upper belt-wheel is connected with pulley support upper end by bolt assembly, lower belt wheel is connected with pulley support lower end by bolt assembly, Idle wheel is fixed on tension pulley support by bolt assembly, and Idle wheel is arranged between tension pulley support and damper leg assembly.
Preferably, tension pulley support is fixed on pulley support by cotter pin, and damper leg assembly one end is fixed on pulley support by bolt assembly, and the damper leg assembly the other end is fixed on tension pulley support by bolt assembly.
In above-mentioned either a program preferably, damper leg assembly comprises buffering sleeve, damping spring, buffering sleeve end cap, regulates strut, regulates damper leg joint, wherein, damping spring is fixedly mounted on buffering sleeve bottom, buffering sleeve end cap is fixed on the top of buffering sleeve by screw pair, regulate strut to be connected with damping spring by buffering sleeve end cap, regulate damper leg joint by screw pair secured adjusted strut.
In above-mentioned either a program preferably, the upper end of pulley support is fixedly connected with upper belt-wheel, the lower end of pulley support is fixedly connected with lower belt wheel, tension pulley support one end and pulley support hinged, the adjustment damper leg joint of the other end and damper leg assembly is hinged, the buffering sleeve of damper leg assembly is hingedly mounted on pulley support, and Idle wheel is arranged on tension pulley support, and Idle wheel contacts between tension pulley support with damper leg assembly and with the slack list of belt.
Being from the beneficial effect of tightening belt transmission device of fixed center distance provided by the utility model, damper leg arrangement of components is between pulley support and tension pulley support, define the internal force drive chain in a belt drive component, avoiding external force tensioning mechanism is delivered on fuselage by belt vibration, alleviates weight; Damper leg assembly is scalable, and belt drive unit itself can adjust the belt distortion that load fluctuation produces in real time, reduces full machine vibration level.
Accompanying drawing explanation
Fig. 1 is prior art typical case fixed center square belt transmission structure assembly schematic diagram;
Fig. 2 is the structural representation from tightening belt transmission device preferred embodiment according to fixed center distance of the present utility model;
Fig. 3 is the cross-sectional view of the damper leg assembly from tightening belt transmission device Fig. 2 illustrated embodiment according to fixed center distance of the present utility model.
Reference character:
Under 1-upper belt-wheel, 2-pulley support, 3-tension pulley support, 4-Idle wheel, 5-damper leg assembly, 6-, belt wheel, 7-belt, 8-cushion sleeve, 9-damping spring, 10-buffering sleeve end cap, 11-adjustment strut, 12-adjustment damper leg joint.
Embodiment
In order to understand better according to the utility model scheme fixed center distance from tightening belt transmission device, below in conjunction with accompanying drawing from a preferred embodiment of tightening belt transmission device, explanation is further elaborated to fixed center distance of the present utility model.
With reference to Fig. 2-Fig. 3, the fixed center distance that the utility model provides from tightening belt transmission device, comprise: upper belt-wheel 1, pulley support 2, lower belt wheel 6, belt 7, tension pulley support 3, Idle wheel 4, damper leg assembly 5, wherein, upper belt-wheel 1 is connected with pulley support 2 upper end by bolt assembly, lower belt wheel 6 is connected with pulley support 2 lower end by bolt assembly, Idle wheel 4 is fixed on tension pulley support 3 by bolt assembly, and Idle wheel 4 is arranged between tension pulley support 3 and damper leg assembly 5.Tension pulley support 3 is fixed on pulley support 2 by cotter pin, and damper leg assembly 5 one end is fixed on pulley support 2 by bolt assembly, and damper leg assembly 5 the other end is fixed on tension pulley support 3 by bolt assembly.
Damper leg assembly 5 comprises buffering sleeve 8, damping spring 9, buffering sleeve end cap 10, regulates strut 11, regulates damper leg joint 12, wherein damping spring 9 is fixedly mounted on bottom buffering sleeve 8, buffering sleeve end cap 10 is fixed on the top of buffering sleeve 8 by screw pair, regulate strut 11 to be connected with damping spring 9 by buffering sleeve end cap 10, regulate damper leg joint 12 by screw pair secured adjusted strut 11.The upper end of pulley support 2 is fixedly connected with described upper belt-wheel 1, the lower end of pulley support 2 is fixedly connected with lower belt wheel 6, tension pulley support 3 one end and pulley support 2 hinged, the adjustment damper leg joint 12 of the other end and damper leg assembly 5 is hinged, the buffering sleeve 8 of damper leg assembly 5 is hingedly mounted on described pulley support 2, Idle wheel 4 is arranged on tension pulley support 3, and Idle wheel 4 is between tension pulley support 3 with described damper leg assembly 5 and contact with the slack list of described belt 7.
In concrete using process, substitute external force start tensioning mechanism with damper leg assembly 5.Idle wheel 4, tension pulley support 3 and buffering strut assemblies 5 space position relation is taken into full account when belt drive component general arrangement, make full use of pulley support 2 reinforcing plate structure placement variation, the boundary conditionss such as Idle wheel 4 and tension pulley support 3 position.Because belt 7, upper belt-wheel 1, lower belt wheel 6 are arranged in the middle of belt pulley 7 support, be conserve space, the vertical gusset of pulley support 2 requires to be arranged in outside, and generally tensioning mechanism is arranged in the slack list of belt 7 transmitting assemblies; Under left and right two damper legs, end connector adopts double fork ear type (or bearing), hinged on the vertical gusset in both sides, direction, slack list, pulley support 2 lower end; On damper leg assembly 5, end connector on its axis, also adopts double fork ear type, hinged in tension pulley support 3 upper end, and tension pulley support 3 lower end is hinged on the vertical gusset in both sides, pulley support 2 upper end; For ensureing that damper leg assembly 5 has sufficient length space as far as possible, avoid and Idle wheel 4 and tension pulley support 3 constructive interference, Idle wheel 4 requires to be arranged between tension pulley support 3 and buffering strut assemblies 5, and damper leg assembly 5 holds greatly layout near pulley support 2.The damper leg assembly 5 that matches of design appropriate tensile strength, just in time can provide appropriate tensile strength.
When belt is static, two the damper leg pressure in left and right act between belt pulley 4 support and tension pulley support 3, promote tension pulley support 3 to rotate up around lower end hinging supporting shaft line, thus drive Idle wheel 4 upwards to compress belt 7, when belt 7 tension force and damper leg assembly 5 thrust-balancing, tensioning puts in place.
During belt running transmitted power, belt 7 pilled-in selvedge transmits pulling force corresponding to belt power, and pilled-in selvedge can be out of shape elongation under a stretching force, and elongated amount continues elongation by damper leg assembly 5 and digests, and basic maintenance belt 7 slack list tension force is constant.
When belt drive unit is in static and operating condition, under tension device damper leg assembly 5 spring force, tension pulley support 3 produces the trend rotated around pulley support 2 immovable point, and belt 7 is in tensioning state; Along with the elongation of belt 7 and wearing and tearing in working procedure, under the effect of spring force, tension pulley support 3 rotates around pulley support immovable point, belt 7 can keep tensioning state work, simultaneously, due to the scalability of damper leg assembly 5, belt 7 transmission device itself can adjust the belt distortion that load fluctuation produces in real time.
More than be described in detail in conjunction with specific embodiment of the utility model, but be not to restriction of the present utility model, everyly according to technical spirit of the present utility model, technical scope of the present utility model is all belonged to any simple modification made for any of the above embodiments, also it should be noted that, comprise combination in any between each part mentioned above according to fixed center distance of the present utility model from the category of tightening belt transmission art scheme.
Claims (4)
1. a fixed center distance from tightening belt transmission device, it is characterized in that, comprise: upper belt-wheel (1), pulley support (2), lower belt wheel (6), belt (7), upper belt-wheel (1), lower belt wheel (6) is installed on two of pulley support (2) and is connected by belt (7), it is characterized in that: also comprise tension pulley support (3), Idle wheel (4), damper leg assembly (5), wherein, upper belt-wheel (1) is connected with pulley support (2) upper end by bolt assembly, lower belt wheel (6) is connected with pulley support (2) lower end by bolt assembly, Idle wheel (4) is fixed on tension pulley support (3) by bolt assembly, Idle wheel (4) is arranged between tension pulley support (3) and damper leg assembly (5).
2. fixed center distance as claimed in claim 1 from tightening belt transmission device, it is characterized in that, described tension pulley support (3) is fixed on described pulley support (2) by cotter pin, described damper leg assembly (5) one end is fixed on described pulley support (2) by bolt assembly, and described damper leg assembly (5) the other end is fixed on described tension pulley support (3) by bolt assembly.
3. fixed center distance as claimed in claim 2 from tightening belt transmission device, it is characterized in that, described damper leg assembly (5) comprises buffering sleeve (8), damping spring (9), buffering sleeve end cap (10), regulate strut (11), regulate damper leg joint (12), wherein damping spring (9) is fixedly mounted on buffering sleeve (8) bottom, buffering sleeve end cap (10) is fixed on the top of buffering sleeve (8) by screw pair, strut (11) is regulated to be connected with damping spring (9) by buffering sleeve end cap (10), regulate damper leg joint (12) by screw pair secured adjusted strut (11).
4. the fixed center distance as described in claim 1-3 any one from tightening belt transmission device, it is characterized in that, the upper end of described pulley support (2) is fixedly connected with described upper belt-wheel (1), the lower end of described pulley support (2) is fixedly connected with lower belt wheel (6), described tension pulley support (3) one end and pulley support (2) hinged, the adjustment damper leg joint (12) of the other end and described damper leg assembly (5) is hinged, the buffering sleeve (8) of described damper leg assembly (5) is hingedly mounted on described pulley support (2), described Idle wheel (4) is arranged on tension pulley support (3), described Idle wheel (4) to be positioned between described tension pulley support (3) with described damper leg assembly (5) and to contact with the slack list of described belt (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275493.XU CN204784511U (en) | 2015-04-30 | 2015-04-30 | Permanent center distance from tensioning belt drive unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275493.XU CN204784511U (en) | 2015-04-30 | 2015-04-30 | Permanent center distance from tensioning belt drive unit |
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| Publication Number | Publication Date |
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| CN204784511U true CN204784511U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520275493.XU Active CN204784511U (en) | 2015-04-30 | 2015-04-30 | Permanent center distance from tensioning belt drive unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509480A (en) * | 2016-01-12 | 2016-04-20 | 中冶赛迪工程技术股份有限公司 | Coupling mechanism of impact-resistant stopping tooth rake |
| CN105889434A (en) * | 2016-05-17 | 2016-08-24 | 广西桂冠开投电力有限责任公司 | Stabilizing mechanism with transmission function |
| CN107355520A (en) * | 2017-08-08 | 2017-11-17 | 重庆通用航空产业集团有限公司 | Tensioning apparatus |
| CN111455949A (en) * | 2020-04-10 | 2020-07-28 | 马茹宾 | Rotary transmission control device for movable ice surface cutting device |
-
2015
- 2015-04-30 CN CN201520275493.XU patent/CN204784511U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509480A (en) * | 2016-01-12 | 2016-04-20 | 中冶赛迪工程技术股份有限公司 | Coupling mechanism of impact-resistant stopping tooth rake |
| CN105509480B (en) * | 2016-01-12 | 2017-12-22 | 中冶赛迪工程技术股份有限公司 | A kind of coupling mechanism of shock resistance backgauge tooth harrow |
| CN105889434A (en) * | 2016-05-17 | 2016-08-24 | 广西桂冠开投电力有限责任公司 | Stabilizing mechanism with transmission function |
| CN107355520A (en) * | 2017-08-08 | 2017-11-17 | 重庆通用航空产业集团有限公司 | Tensioning apparatus |
| CN111455949A (en) * | 2020-04-10 | 2020-07-28 | 马茹宾 | Rotary transmission control device for movable ice surface cutting device |
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