CN204282825U - A kind of slew gear and engineering machinery - Google Patents
A kind of slew gear and engineering machinery Download PDFInfo
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- CN204282825U CN204282825U CN201420683205.XU CN201420683205U CN204282825U CN 204282825 U CN204282825 U CN 204282825U CN 201420683205 U CN201420683205 U CN 201420683205U CN 204282825 U CN204282825 U CN 204282825U
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- installation shaft
- segment
- slew gear
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- idle wheel
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Abstract
The utility model discloses a kind of slew gear and engineering machinery.This slew gear comprises driving wheel, pivoting support and idle wheel, described driving wheel and pivoting support are arranged in frame rotationally, described idle wheel engages with described driving wheel and described pivoting support, described idle wheel is set with on the mounting shaft rotationally, described installation shaft comprises the second segment being positioned at middle first paragraph and being positioned at end, the axis of described first paragraph and the axis being parallel of described second segment presupposed off-center distance of being separated by, described idle wheel is sleeved on described first paragraph, and described second segment is limited to be arranged in frame rotationally.The utility model can carry out adjustment in a big way in the eccentric throw of setting, fully meets actual requirement, and has the advantages such as convenient for maintaining is changed, steadiness is good.
Description
Technical field
The utility model relates generally to engineering machinery field, specifically, relates to a kind of slew gear, and is provided with the engineering machinery of this slew gear.
Background technology
In the industries such as engineering machinery, be limited to current technical condition and machining accuracy, in the installation of gear train, often there will be the excessive or too small problem of backlash.The job stability that can have influence on system due to backlash even causes installing, and therefore needs adjustment backlash in certain limit.
In addition, after work after a while, along with the loss of the component such as the wearing and tearing of installing hole and gear, the gap between gear train middle gear becomes large, can produce abnormal sound, wearing and tearing are accelerated, and then affect the normal operation of complete machine.Therefore need to adopt practicable method to adjust backlash, make it again normally work.
Number of patent application be 201120181714.9 patent a kind of adjustable swing mechanism, turntable and engineering machinery are disclosed, the backlash of gear can be adjusted.This patent is processed with annular mounting hole on axle sleeve, and axle sleeve is processed into eccentric mode, can upper and lower two axle sleeves be fixed in frame by securing members such as bolts, idler shaft group is arranged on axle sleeve, as the backlash between gear and pivoting support needs adjustment, then prolong mounting hole rotation to achieve the goal by adjusting upper and lower two axle sleeves.
For technique scheme, the angle θ opened due to mounting hole is limited, can not be all through, and the bias therefore adjusted is also limited; In addition, axle sleeve is processed into bias, technique is comparatively complicated; Meanwhile, upper and lower two axle sleeves must adjust to consistent position, otherwise idler shaft can tilt, high to installation requirement; And because bolt is arranged in mounting hole, circumference is unfixing, stressed larger time may and then rotate, there is the defect of steadiness difference.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of slew gear, can carry out the adjustment of backlash, also can solve that adjusting range in prior art is limited simultaneously, the defect of complex process, steadiness difference or at least one of them.
Slew gear of the present utility model, comprise driving wheel, pivoting support and idle wheel, described idle wheel engages with described driving wheel and described pivoting support, described driving wheel and pivoting support are arranged in frame rotationally, described idle wheel is set with on the mounting shaft rotationally, described installation shaft comprises the second segment being positioned at middle first paragraph and being positioned at end, the axis of described first paragraph and the axis being parallel of described second segment presupposed off-center distance of being separated by, described idle wheel is sleeved on described first paragraph, and described second segment is limited to be arranged in frame rotationally.
Further, the diameter of described second segment is less than the diameter of described first paragraph.
Further, be provided with eccentric bushing between described second segment and frame, the inner ring of described eccentric bushing coordinates with described second segment, and the outer ring of described eccentric bushing coordinates with described frame.
Further, the end face of described installation shaft is provided with boss, the side of described boss is also provided with the block stoping described installation shaft to be rotated.
Further, be provided with between the first paragraph of described idle wheel and described installation shaft for reducing the lining rubbed.
Further, this slew gear also comprises gland and fastening bolt, and described gland is arranged at described installation shaft one end, and described fastening bolt is used for fixing described gland and frame.
Further, the other end of described installation shaft is arranged in the installing hole in described frame.
Further, described idle wheel is provided with upper and lower two in described installation shaft, engages respectively with described driving wheel and described pivoting support, and the diameter of the first paragraph that described installation shaft is corresponding from each idle wheel is different, and/or the diameter of the second segment at the upper and lower two ends of described installation shaft is different.
Another aspect of the present utility model, also provides a kind of engineering machinery, and described engineering machinery is provided with aforesaid slew gear.
Slew gear of the present utility model, the installation shaft of its idle wheel comprises first paragraph and the second segment of mutual bias, when needs adjustment backlash, only needs releasing to the restriction of installation shaft rotation and rotates this installation shaft, after installation shaft turns to correct position, then limit installation shaft rotation.The utility model can carry out adjustment in a big way in the eccentric throw of setting, fully meets actual requirement.
In addition, form of structure of the present utility model is simply easy to operation, processing and transformation of the way simple and feasible, convenient for maintaining is changed, and can be effectively fixing after adjusting to the right place, avoid installation shaft in prior art and easily follow the problem of pinion rotation, there is the advantage that stability is high, reliability is high, be particularly suitable for the slew gear of engineering machinery.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the slew gear of the utility model one embodiment;
Fig. 2 is the front view of the installation shaft of the utility model one embodiment;
Fig. 3 is the left view of installation shaft embodiment illustrated in fig. 2;
Fig. 4 is the sectional view of the eccentric bushing of the utility model one embodiment;
Fig. 5 is the left view of eccentric bushing embodiment illustrated in fig. 4.
Description of reference numerals:
Idle wheel-1 installation shaft-2
First paragraph-21 second segment-22
Eccentric bushing-23 boss-24
Frame-3 block-4
Lining-5 gland-6
Fastening bolt-7 driving wheel-8
Pivoting support-9
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
Fig. 1 is the structural representation of the slew gear of the utility model one embodiment.This slew gear comprises driving wheel 8, pivoting support 9 and idle wheel 1.Wherein driving wheel 8 and pivoting support 9 are arranged in frame 3 rotationally, and idle wheel 1 engages with driving wheel 8 and pivoting support 9.The quantity of idle wheel 1 can be one, and preferred idle wheel 1 is provided with upper and lower two in installation shaft 2, and upper and lower two idle wheels 1 are fixed together.
The idle wheel 1 of this embodiment is sleeved in installation shaft 2 rotationally, installation shaft 2 comprises the second segment 22 being positioned at middle first paragraph 21 and being positioned at end, the axis of first paragraph 21 and the axis being parallel of second segment 22 presupposed off-center distance of being separated by, idle wheel 1 is sleeved on first paragraph 21, second segment 22 is limited to be arranged at rotationally in frame 3, because second segment 22 is limited to be arranged at rotationally in frame 3, be appreciated that, installation shaft 2 is limited to rotate in frame, specifically can adopt the mode be completely fixed, certainly, what permission installation shaft 2 can be appropriate moves axially.When idle wheel 1 is two, the diameter of the first paragraph 21 that preferred installation shaft 2 is corresponding from each idle wheel 1 is different, and/or, the diameter of the second segment 22 at installation shaft about 2 two ends is different, due to the stressed difference in installation shaft 2 two ends (upper end is larger), adopt different diameters can mate stressed, optimize structure while guaranteed strength.
Second previous paragraph 22 both can be positioned at wherein one end of first paragraph 21, also can be positioned at the two ends of second segment 22, as long as can realize the fixed installation of installation shaft 2, was preferably arranged on two ends.The diameter of second segment 22 can be greater than or less than the diameter of second segment 22, all can realize technique effect of the present utility model.
Fig. 2 and Fig. 3 is the structural representation of the installation shaft 2 of the utility model one embodiment, and wherein Fig. 2 is front view, and Fig. 3 is left view.In this embodiment, the diameter of installation shaft 2 second segment 22 is less than the diameter of first paragraph 21, and the diameter of definition first paragraph 21 is R, and eccentric throw is e, and the diameter of second segment 22 is then R-2e.
When needing to adjust the backlash between idle wheel 1 and driving wheel 8 or pivoting support 9, only need remove installation shaft 2 limit rotation and rotate this installation shaft 2, the adjusting range of backlash can at [-e, + e] between change continuously, adjusting range can be improved significantly relative to prior art, fully meet actual requirement.This embodiment is by forming second segment 22 in d-axis end machining.
As another kind of embodiment, the diameter of second segment 22 can be greater than the diameter of first paragraph 21, by being processed to form first paragraph 21 at the intermediate cut of d-axis.Preferably, eccentric bushing 23 is provided with between second segment 22 and frame 3, the inner ring of this eccentric bushing 23 coordinates with second segment 22, and outer ring coordinates with frame 3, and this eccentric bushing 23 can play the effect increasing offset, particularly, if the eccentric throw of eccentric bushing 23 is e ', then can be increased the gap adjustment of [-e ' ,+e '] by eccentric sleeves 23, namely accumulative backlash adjusting range is: [-e-e ' ,+e+e '].The structural representation of eccentric bushing 23 can with reference to figure 4 and Fig. 5, and wherein Fig. 4 is sectional view, and Fig. 5 is left view.Eccentric bushing 23 is preferably vertically disposed with two.
For the ease of the adjustment of installation shaft 2 position, the end face of preferred installation shaft 2 is provided with boss 24 (as shown in Figures 2 and 3), for clamping or leaning when being convenient to adjust in position.This boss 24 is by special or general tool holding.In addition, also can be provided with the block 4 stoping installation shaft 2 to be rotated in the side of boss 24, block 4 can be welded in frame 3 after position is fixing.
The utility model can adopt multiple possible mode to fixedly mount axle 2, and preferably adopt gland 6 and fastening bolt 7, gland 6 is arranged at installation shaft 2 one end, and fastening bolt 7 is for stationary gland 6 and frame 3.In the embodiment shown in fig. 1, gland 6 is arranged on installation shaft 2 upper end, and gland 6 and installation shaft 2 are fixed in frame 3 by fastening bolt 7.The other end of installation shaft 2 also can adopt similar fastening devices, and in order to simplify structure, convenient installation, preferably frame 3 relevant position is provided with installing hole, the other end of installation shaft 2 is arranged in this installing hole.
In addition, owing to relatively rotating between idle wheel 1 and installation shaft 2, flexibly rotatably mounted in order to ensure, be preferably provided with between idle wheel 1 and the first paragraph 21 of installation shaft 2 for reducing the lining 5 rubbed.This lining 5 can be vertically disposed with two.
The utility model also provides a kind of engineering machinery, and this project machinery comprises the slew gear shown in Fig. 1.This project machinery is preferably concrete mixer, concrete placing boom etc.As one may, this project machinery also can be as automobile crane etc. arranges the equipment of slew gear.Other of this project machinery may structure with reference to technology that is existing and that improve, can not repeat this herein.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. a slew gear, comprise driving wheel (8), pivoting support (9) and idle wheel (1), described driving wheel (8) and pivoting support (9) are arranged in frame (3) rotationally, described idle wheel (1) engages with described driving wheel (8) and described pivoting support (9), described idle wheel (1) is sleeved in installation shaft (2) rotationally, it is characterized in that, described installation shaft (2) comprises the second segment (22) being positioned at middle first paragraph (21) and being positioned at end, the axis of described first paragraph (21) and the axis being parallel of described second segment (22) presupposed off-center distance of being separated by, described idle wheel (1) is sleeved on described first paragraph (21), described second segment (22) is limited to be arranged at rotationally in frame (3).
2. slew gear according to claim 1, is characterized in that, the diameter of described second segment (22) is less than the diameter of described first paragraph (21).
3. slew gear according to claim 1, it is characterized in that, eccentric bushing (23) is provided with between described second segment (22) and frame (3), the inner ring of described eccentric bushing (23) coordinates with described second segment (22), and the outer ring of described eccentric bushing (23) coordinates with described frame (3).
4. the slew gear according to any one of claim 1-3, it is characterized in that, the end face of described installation shaft (2) is provided with boss (24), the side of described boss (24) is also provided with the block (4) stoping described installation shaft (2) to be rotated.
5. the slew gear according to any one of claim 1-3, is characterized in that, is provided with for reducing the lining (5) rubbed between the first paragraph (21) of described idle wheel (1) and described installation shaft (2).
6. the slew gear according to any one of claim 1-3, it is characterized in that, also comprise gland (6) and fastening bolt (7), described gland (6) is arranged at described installation shaft (2) one end, and described fastening bolt (7) is for fixing described gland (6) and frame (3).
7. slew gear according to claim 6, is characterized in that, the other end of described installation shaft (2) is arranged in the installing hole in described frame (3).
8. the slew gear according to any one of claim 1-3, it is characterized in that, described idle wheel (1) is provided with upper and lower two in described installation shaft (2), engage with described driving wheel (8) and described pivoting support (9) respectively, the diameter of the first paragraph (21) that described installation shaft (2) is corresponding from each idle wheel (1) is different, and/or the diameter of the second segment (22) at the upper and lower two ends of described installation shaft (2) is different.
9. an engineering machinery, is characterized in that, described engineering machinery is provided with the slew gear described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420683205.XU CN204282825U (en) | 2014-11-14 | 2014-11-14 | A kind of slew gear and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420683205.XU CN204282825U (en) | 2014-11-14 | 2014-11-14 | A kind of slew gear and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204282825U true CN204282825U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420683205.XU Active CN204282825U (en) | 2014-11-14 | 2014-11-14 | A kind of slew gear and engineering machinery |
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|---|---|
| CN (1) | CN204282825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894503A (en) * | 2018-07-12 | 2018-11-27 | 湖南响箭重工科技有限公司 | A kind of adjustable rotary mechanism and pump truck for pump truck |
-
2014
- 2014-11-14 CN CN201420683205.XU patent/CN204282825U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894503A (en) * | 2018-07-12 | 2018-11-27 | 湖南响箭重工科技有限公司 | A kind of adjustable rotary mechanism and pump truck for pump truck |
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