CN213235966U - Belt pretension mechanism and milling machine - Google Patents
Belt pretension mechanism and milling machine Download PDFInfo
- Publication number
- CN213235966U CN213235966U CN202021446029.XU CN202021446029U CN213235966U CN 213235966 U CN213235966 U CN 213235966U CN 202021446029 U CN202021446029 U CN 202021446029U CN 213235966 U CN213235966 U CN 213235966U
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- tensioning
- plate
- jackscrew
- arm
- belt
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- 238000003801 milling Methods 0.000 title claims description 16
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 206010007247 Carbuncle Diseases 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000011384 asphalt concrete Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003701 mechanical milling Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
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Abstract
The utility model discloses a belt pretension mechanism and milling machine, the straining arm back shaft, jackscrew mount pad, pretension board back shaft in the mechanism are fixed on the frame curb plate, the straining arm is installed on the straining arm back shaft, the jackscrew is installed on the jackscrew mount pad, the position of jackscrew mount pad can be adjusted by changing the pretension board shape; the pre-tensioning plate is arranged on the pre-tensioning plate supporting shaft; the roller is arranged on the pre-tensioning plate through a pin; after the mechanism is assembled, the force is applied to the pre-tensioning plate through the rotating jackscrew, the force is transmitted to the roller by the pre-tensioning plate through the rotating shaft, and the roller transmits the force to the tensioning arm to enable the tensioning arm to rotate upwards to pre-tension the belt.
Description
Technical Field
The utility model particularly relates to a belt pretension mechanism and milling machine belongs to engineering machine tool technical field.
Background
The road milling machine is a special mechanical device for maintenance operation of highways and urban roads, and is mainly applied to excavation and renovation of asphalt concrete surface layers of highways, airports, wharfs, parking lots and the like, removal of road surface diseases such as rutting, cracking, carbuncle bags, road surface marks and the like of asphalt road surfaces, galling of cement road surfaces, milling and leveling of staggered platforms of the surface layers and the like.
The existing mechanical milling drum transmission mode generally uses a mechanical belt transmission mode, an engine serves as a power source, a driving wheel is driven to rotate through a hydraulic clutch, a driven wheel is driven to rotate through a transmission belt, and finally the milling drum is driven to execute road surface milling operation through a planetary reducer. The pre-tensioning mechanism of the milling machine belt mainly adopts jackscrews to directly exert force on the tensioning arm, and the jackscrews and a jackscrew mounting plate need to be arranged on the lower side of the tensioning arm. No space is arranged on the lower side of the tensioning arm of the milling machine, and a jackscrew or a mounting seat is arranged on the lower side of the tensioning arm of the milling machine, so that the tensioning arm cannot be directly forced through the jackscrew. In addition, because the tensioning arm and the tensioning wheel are heavy, the tensioning arm needs large moment when the jackscrew is directly rotated at the lower side, actual operation is difficult, and meanwhile, if other parts are arranged outside the jackscrew to shield, the problem of inconvenience in pre-tensioning is easy to occur.
Aiming at the problem that the belt of a mechanical transmission system of a milling machine in the prior art is loose, an effective solution is not provided at present.
Disclosure of Invention
An object of the utility model is to overcome not enough among the prior art, provide a belt pretension mechanism and milling machine, this belt pretension mechanism arranges more rationally on whole car, and the adjustment pretension in the use is more convenient.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
the utility model provides a belt pre-tensioning mechanism, which comprises a tensioning arm 1, a tensioning arm support shaft 2, a jackscrew 3, a jackscrew mounting plate 4, a pre-tensioning plate 5, a pre-tensioning plate support shaft 6 and a frame side plate 9,
the tensioning arm 1 is connected with a frame side plate 9 through a tensioning arm support shaft 2, the jackscrew 3 is connected with a pre-tensioning plate 5 through a jackscrew mounting plate 4, the pre-tensioning plate 5 is mounted on the frame side plate 9 through a pre-tensioning plate support shaft 6, and the jackscrew mounting plate 4 is fixed on the tensioning arm 1 and connected with the frame side plate 9.
Further, the belt pretensioner mechanism further includes a roller 7, and the roller 7 is mounted on the pretensioner plate 5 by a pin 8 and contacts the tensioner arm 1.
Further, the jackscrew mounting plate 4 is arranged at the upper side position of the tensioning arm 1.
Further, the pretensioning plate 5 is arranged between the tensioning arm 1 and the frame side plate 9.
Further, the pretensioning plate 5 can adjust the position of the jackscrew mounting plate 4 by changing the shape.
Further, the pre-tensioning plate 5, the pre-tensioning plate supporting shaft 6, the roller 7 and the roller pin 8 are arranged on the inner side of the tensioning arm 1, so that the occupied external space is reduced.
The utility model also provides a milling machine, milling machine includes above arbitrary belt pretension mechanism.
Compared with the prior art, the utility model discloses the beneficial effect who reaches:
the jackscrew is arranged on the upper side of the tensioning arm, the selectable range of the arrangement position is larger, and the pre-tensioning plate is arranged between the tensioning arm and the frame side plate, so that the layout of other components is not influenced; by optimizing the shape of the pre-tensioning plate, the pre-tensioning force can be reduced by utilizing the lever principle, and the tensioning difficulty is reduced; and a roller is additionally arranged between the tensioning arm and the pre-tensioning plate, and the rolling friction force of the roller and the tensioning arm is smaller than the sliding friction between the pre-tensioning plate and the tensioning arm, so that the pre-tensioning force is reduced, and the abrasion is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a pretensioning mechanism according to an embodiment of the present invention;
FIG. 2 is a rear view of the pretensioning mechanism according to the embodiment of the present invention without the frame side plate;
in the figure: 1. the tensioning arm comprises a tensioning arm 2, a tensioning arm support shaft 3, a jackscrew 4, a jackscrew mounting plate 5 and a pre-tensioning plate; 6. Pretension board back shaft 7, gyro wheel 8, gyro wheel pin 9, frame curb plate.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a belt pre-tensioning mechanism for a milling machine mainly comprises a tensioning arm 1, a tensioning arm support shaft 2, a jackscrew 3, a jackscrew mounting plate 4, a pre-tensioning plate 5, a pre-tensioning plate support shaft 6, a roller 7, a roller pin 8 and the like. The tight arm support shaft 2, the jackscrew mounting plate 4 and the pre-tensioning plate support shaft 6 are fixed on the frame side plate 9.
The jackscrew 3 is arranged on the jackscrew mounting plate 4, and the position of the jackscrew mounting plate 4 can be adjusted by changing the shape of the pre-tensioning plate 5, so that the jackscrew 3 and the jackscrew mounting plate 4 are ensured not to interfere with other components; the pre-tensioning plate 5 is mounted on the pre-tensioning plate supporting shaft; the roller 7 is arranged on the pre-tensioning plate 5 through a pin 8, and the roller 7 is in contact with the tensioning arm 1; after the mechanism is assembled, the jackscrew 3 is rotated to apply force to the pre-tensioning plate 5, the pre-tensioning plate 5 transmits the force to the roller 7 through the rotating shaft 6, and the roller 7 transmits the force to the tensioning arm 1, so that the tensioning arm 1 rotates upwards to pre-tension a belt.
Compared with the jackscrew direct pre-tightening tensioning arm in the prior art, the jackscrew of the utility model is selectively arranged at the upper side of the tensioning arm 1, the arrangement position is wider in selectable range, and the pre-tensioning plate 5 is arranged between the tensioning arm 1 and the frame side plate 9, so that the layout of other components is not influenced; by optimizing the shape of the pre-tensioning plate 5, the pre-tensioning force can be reduced by utilizing the lever principle, and the tensioning difficulty is reduced; a roller 7 is additionally arranged between the tensioning arm 1 and the tensioning plate 5, and the rolling friction force between the roller 7 and the tensioning arm 1 is smaller than the sliding friction between the tensioning plate 5 and the tensioning arm 1, so that the pre-tensioning force is reduced, and the abrasion is reduced.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (7)
1. A belt pre-tensioning mechanism is characterized by comprising a tensioning arm (1), a tensioning arm support shaft (2), a jackscrew (3), a jackscrew mounting plate (4), a pre-tensioning plate (5), a pre-tensioning plate support shaft (6) and a frame side plate (9),
the tensioning arm (1) is connected with a frame side plate (9) through a tensioning arm supporting shaft (2), a jackscrew (3) is connected with a pre-tensioning plate (5) through a jackscrew mounting plate (4), the pre-tensioning plate (5) is mounted on the frame side plate (9) through a pre-tensioning plate supporting shaft (6), and the jackscrew mounting plate (4) is fixed on the tensioning arm (1) and is connected with the frame side plate (9).
2. A belt pretensioner mechanism according to claim 1, characterised in that the belt pretensioner mechanism further comprises a roller (7), the roller (7) being mounted on the pretensioning plate (5) by means of a pin (8) in contact with the tensioner arm (1).
3. A belt pretensioner mechanism according to claim 1, wherein the jack screw mounting plate (4) is provided at an upper side position of the tensioner arm (1).
4. A belt pretensioner mechanism according to claim 1, wherein the pretensioning plate (5) is arranged between the tensioner arm (1) and a frame side plate (9).
5. A belt pretensioner mechanism according to claim 4, wherein the pretensioning plate (5) is able to adjust the position of the jack screw mounting plate (4) by changing shape.
6. A belt pretensioning mechanism according to claim 1, characterized in that the pretensioning plate (5), pretensioning plate support shaft (6), roller (7), roller pin (8) are arranged inside the pretensioning arm (1).
7. A milling machine, characterized in that it comprises a belt pretensioning mechanism according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021446029.XU CN213235966U (en) | 2020-07-21 | 2020-07-21 | Belt pretension mechanism and milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021446029.XU CN213235966U (en) | 2020-07-21 | 2020-07-21 | Belt pretension mechanism and milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213235966U true CN213235966U (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021446029.XU Active CN213235966U (en) | 2020-07-21 | 2020-07-21 | Belt pretension mechanism and milling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213235966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118810949A (en) * | 2024-09-20 | 2024-10-22 | 浙江大学嘉兴研究院 | Synchronous belt travel mechanism |
-
2020
- 2020-07-21 CN CN202021446029.XU patent/CN213235966U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118810949A (en) * | 2024-09-20 | 2024-10-22 | 浙江大学嘉兴研究院 | Synchronous belt travel mechanism |
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