CN200999853Y - Variable reference diameter pulley - Google Patents
Variable reference diameter pulley Download PDFInfo
- Publication number
- CN200999853Y CN200999853Y CNU2007200176822U CN200720017682U CN200999853Y CN 200999853 Y CN200999853 Y CN 200999853Y CN U2007200176822 U CNU2007200176822 U CN U2007200176822U CN 200720017682 U CN200720017682 U CN 200720017682U CN 200999853 Y CN200999853 Y CN 200999853Y
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- CN
- China
- Prior art keywords
- wheel
- belt
- discs
- wheel shaft
- wheel discs
- 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.)
- Expired - Lifetime
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Abstract
A reference diameter invariable belt pulley. The structural characteristic is that the belt pulley is a separated belt pulley composed of two separate eudipleural wheel discs, the inner sides of the upper parts of the two wheel discs are slant surfaces, the belt is installed in the wheel groove formed by the two slant surfaces, a space adjusting and positioning device installed on the wheel axle is arranged on the inner side of the lower part of the two wheel discs, and locking nuts installed on the wheel axle are respectively arranged on the outer sides of the lower part of the two wheel discs. Because the utility model adopts a combination type separated structure, the space adjusting and positioning device can conveniently adjust the space between the two wheel discs, therefore to change the reference diameter of the belt pulley, the belt distortion problem can be solved without a tensioning wheel, and the speed changing ratio can be adjusted according to the requirements.
Description
Technical field
The utility model relates to the belt pulley technical field, particularly relates to the adjustable belt pulley of a kind of datum diameter.
Background technique
Mechanical field often adopts belt transmission to carry out the moment of torsion transmission, because the toughness of belt and the length that the distortion in the using process makes belt can change, the measure that addresses this problem extensive employing at present is to adopt the expansion tightening wheel structure, though structure is uncomplicated, but space availability ratio is low, has limited the layout of global design scheme.Because the structure of existing belt pulley mostly is an integral type, thereby can not realize the adjusting of velocity ratio.The patent No. is that the model utility of ZL95240224.6 discloses a kind of variable-diameter vee-pulley, and it mainly is made of plurality of sector belt wheel unit, though can change pulley diameters, thereby adjusting gear ratio, but complex structure, the fabricating cost height, it is convenient inadequately to regulate operation.Application number is that 90100496.0 the variable diameter pulley with expandable element mainly is that belt supporting member by a plurality of rounded arrangements constitutes, and has complex structure, unhandy problem equally.
Summary of the invention
The purpose of this utility model is exactly at above-mentioned the deficiencies in the prior art, a kind of variable diameter pulley simple in structure, easy to adjust is provided, by regulating the datum diameter of belt wheel, can play the effect of tensioner belt, cancel existing expansion tightening wheel structure, simultaneously, also can realize adjusting to gear ratio.
The utility model band wheel with variable datum diameter, comprise wheel shaft and the belt wheel that is installed on the wheel shaft, its structural feature is: the split belt wheel that said belt wheel is made up of symmetrical two wheel discs independently, the upper inner of two wheel discs is the inclined-plane, belt is contained in the race of this two inclined-planes formation, lower inside at two wheel discs has the spacing that is contained on the wheel shaft to adjust positioning device, in the outside, bottom of two wheel discs a locking nut that is contained on the wheel shaft is arranged respectively.
Band wheel with variable datum diameter as mentioned above, its spacing is adjusted positioning device and is comprised by screw thread and be installed in adjusting screw in the axial circular hole in wheel shaft end, the front portion of adjusting screw is conical, the adjusting positioning block is installed in the radial hole on wheel shaft, the top of regulating positioning block is symmetrical inclined-plane or stepped, be used to be supported between two wheel discs, the lower end of regulating positioning block has the inclined-plane that matches with the conical surface of adjusting screw, at the rear portion of adjusting screw locking nut is housed.
Band wheel with variable datum diameter as mentioned above, its spacing is adjusted positioning device also can adopt two adjusting nuts that are installed on the wheel shaft.
Because the utility model has adopted knockdown split belt wheel structure, adjust the spacing that positioning device can be regulated two wheel discs easily by spacing, thereby increase the datum diameter of belt wheel, need not the expansion tightening wheel structure can solve the belt problem on deformation, reduced cost, improved space availability ratio, and can carry out the adjustment of gear ratio as required, realized adjusting transmitted power.The utility model is simple in structure, and fabricating cost is low, uses adjusting very convenient.
Description of drawings
Fig. 1 is an embodiment's of the utility model a main sectional view, shows its overall structure;
Fig. 2 adjusts back status architecture schematic representation for Fig. 1;
Fig. 3 is another embodiment's a main sectional view;
Fig. 4 is another embodiment's a main sectional view.
Embodiment
Fig. 1, embodiment illustrated in fig. 2, the utility model is by flat key 3, two wheel disc 3 bilateral symmetry of two independently axially movable wheel discs to be installed on wheel shaft 1, and its upper inner is the inclined-plane, common formation one split belt wheel, belt 4 is contained in the race of above-mentioned two inclined-planes formation.Lower inside at two wheel discs 3 has the spacing that is contained on the wheel shaft 1 to adjust positioning device, said spacing is adjusted positioning device and is comprised by screw thread and be installed in the adjusting screw 6 of wheel shaft 1 end axis in circular hole, the front portion of adjusting screw 6 is conical, on wheel shaft 1, be separately installed with an adjusting positioning block 5 moving up and down in relative two radial holes in position, the top of regulating positioning block 5 is symmetrical inclined-plane, be used to be supported between two wheel discs 3 and limit its spacing, the lower end of regulating positioning block 5 has the inclined-plane that matches with the conical surface of adjusting screw 6, at the rear portion of adjusting screw 6 locking nut 7 is housed.The outside, bottom at two wheel discs 3 has the individual locking nut 2 that is contained on the wheel shaft 1 respectively.
The working principle of the foregoing description is: by adjusting the axial displacement of adjusting screw 6, can make and regulate positioning block 5 generation radial displacements, because regulating the top of positioning block 5 is symmetrical inclined-plane, thereby can change the spacing of two wheel discs 3, for the certain belt 4 of size, also must upper and lower displacement in the race that 3 liang of inclined-planes of wheel disc constitute, promptly changed the datum diameter of belt wheel.Specifically, when just bringing into use, regulate the part that positioning block 5 exceeds wheel shaft 1 and generally should be in axial Extreme breadth, at this moment the distance of two wheel discs 3 farthest, for the certain belt 4 of size, this moment belt wheel the datum diameter minimum, as shown in Figure 1.After belt is elongated in the using process, locking nut 7 and locking nut 2 can be unclamped, adjusting screw 6 is outwards moved, regulate positioning block 5 this moment, and the Effective face width that its top is used to support two wheel discs 3 reduces, and two wheel discs 3 move inward simultaneously, reduced mutual distance, for belt 4, this moment, the datum diameter of belt wheel became big, as shown in Figure 2.After adjusting end, by the locking nut 2 that contracts that two wheel discs 3 are fastening, by locking nut 7 that adjusting screw 6 is fastening.Above-mentioned adjustment process can bidirectional modulation, thereby has realized the effect that datum diameter is variable.
Above-mentioned adjustment process is for a belt wheel, if adjust two belt wheels simultaneously, can be implemented in the effect of having played the tensioner belt under the constant situation of speed ratio.If only adjust a belt wheel, cooperating the belt of different length to use, can realize the adjusting of gear ratio.
Embodiment illustrated in fig. 3 and the foregoing description different, the top that only is to regulate positioning block 5 is symmetrical step structure, regulates with the stepping that carries out the belt wheel datum diameter.
Embodiment illustrated in fig. 4, the spacing that the utility model adopts adjust positioning device be two be installed on the wheel shaft 1 adjusting nut 8, two adjusting nuts 8 by with the cooperating of locking nut 2, also can regulate the spacing of two wheel discs 3, thus further simplified structure.
Claims (3)
1, a kind of band wheel with variable datum diameter, comprise wheel shaft (1) and be installed in belt wheel on the wheel shaft (1), it is characterized in that: the split belt wheel that said belt wheel is made up of symmetrical two wheel discs (3) independently, the upper inner of two wheel discs (3) is the inclined-plane, belt (4) is contained in the race of this two inclined-planes formation, lower inside at two wheel discs (3) has the spacing that is contained on the wheel shaft (1) to adjust positioning device, in the outside, bottom of two wheel discs (3) locking nut (2) that is contained on the wheel shaft (1) is arranged respectively.
2, band wheel with variable datum diameter according to claim 1, it is characterized in that said spacing adjusts positioning device and comprise by screw thread and be installed in the adjusting screw (6) of wheel shaft (1) end axis in circular hole, the front portion of adjusting screw (6) is conical, be equipped with in the radial hole on wheel shaft (1) and regulate positioning block (5), the top of regulating positioning block (5) is symmetrical inclined-plane or stepped, be used to be supported between two wheel discs (3), the lower end of regulating positioning block (5) has the inclined-plane that matches with the conical surface of adjusting screw (6), at the rear portion of adjusting screw (6) locking nut (7) is housed.
3, band wheel with variable datum diameter according to claim 1 is characterized in that it is two adjusting nuts (8) that are installed on the wheel shaft (1) that said spacing is adjusted positioning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200176822U CN200999853Y (en) | 2007-01-20 | 2007-01-20 | Variable reference diameter pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200176822U CN200999853Y (en) | 2007-01-20 | 2007-01-20 | Variable reference diameter pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200999853Y true CN200999853Y (en) | 2008-01-02 |
Family
ID=39014260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200176822U Expired - Lifetime CN200999853Y (en) | 2007-01-20 | 2007-01-20 | Variable reference diameter pulley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200999853Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286776A (en) * | 2015-06-10 | 2017-01-04 | 但永强 | Flat thread adjustable type variable external diameter belt pulley |
| CN106499783A (en) * | 2016-11-04 | 2017-03-15 | 福州麦辽自动化设备有限公司 | A kind of variator based on variable diameters belt pulley |
-
2007
- 2007-01-20 CN CNU2007200176822U patent/CN200999853Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286776A (en) * | 2015-06-10 | 2017-01-04 | 但永强 | Flat thread adjustable type variable external diameter belt pulley |
| CN106499783A (en) * | 2016-11-04 | 2017-03-15 | 福州麦辽自动化设备有限公司 | A kind of variator based on variable diameters belt pulley |
| CN106499783B (en) * | 2016-11-04 | 2018-10-30 | 苏建华 | A kind of speed changer based on variable diameters belt pulley |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080102 |
|
| EXPY | Termination of patent right or utility model |