CN201257708Y - Speed reducer box body structure of concrete mixing truck - Google Patents
Speed reducer box body structure of concrete mixing truck Download PDFInfo
- Publication number
- CN201257708Y CN201257708Y CNU2008201648952U CN200820164895U CN201257708Y CN 201257708 Y CN201257708 Y CN 201257708Y CN U2008201648952 U CNU2008201648952 U CN U2008201648952U CN 200820164895 U CN200820164895 U CN 200820164895U CN 201257708 Y CN201257708 Y CN 201257708Y
- Authority
- CN
- China
- Prior art keywords
- case
- speed reducer
- tail end
- body structure
- extension segment
- 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 - Fee Related
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Abstract
The utility model belongs to the field of mechanical gearboxes, in particular relates to a case structure of a speed reducer of a cement mixer. The strength of the inner concave extension segment at the tail end of the case of a speed reducer largely affects the service life of the case, and the strength in the position in the prior case of the speed reducer is not enough, so that cracking and breakage easily appear in the process of using, the entire service life of the case of the speed reducer is shortened, and the requirement for long-term reliable use can not be satisfied. The utility model provides a novel case structure of the speed reducer of the cement mixer, wherein, the strength of the tail end of the case is high, so that the case structure is not easy to crack and break in long-term use and is used reliably and safely. The case structure comprises a case, a concave extension segment is arranged at the tail end thereof, the end part of the concave extension segment internally and radically extends to form a ring-shaped positioning lug boss for installing bearings, the outer wall of the concave extension segment is a conical surface and the radical section size of the outer wall is increased from one end of the positioning lug boss to the other end thereof, and the corresponding side wall thickness of the inner concave extension segment is increased in the same direction. The strength at the tail end of the conical-structured case is greatly improved, so as to satisfy the requirement of long-term use.
Description
[affiliated technical field]
The utility model belongs to the mechanical gear box field, particularly a kind of concrete mixer truck reductor body structure.
[background technology]
Reductor is crucial total member of concrete mixer, is driven by hydraulic motor, makes the barreled precast concrete in transportation by double reduction, keeps evenly stirring to guarantee the concrete pouring quality in construction site continuously.Casing is the vitals of reductor, the intensity that particularly is positioned at casing tail end indent extension is very big to casing influence in service life, cylinder roller bearing 4 entad will be installed on the inwall of this section casing during work carry out transmission (referring to Fig. 1) to connect output panel 5, the casing at this position bears bigger radial load during reductor work.Existing reductor casing should be located insufficient strength, and very easily cracking is damaged in the use, shortened the working life of reductor casing integral body, can not satisfy the needs that use reliably and with long-term.
[utility model content]
The technical assignment of the technical problems to be solved in the utility model and proposition is the technological deficiency that overcomes existing reductor body structure, a kind of new concrete mixer truck reductor body structure is provided, described casing tail end intensity height, the long-term not cracky cracking that uses also, safe in utilization for a long time, reliable.
For achieving the above object, the technical scheme that the utility model adopted is: concrete mixer truck reductor body structure, comprise a casing, its tail end is provided with the indent extension, the footpath, end of indent extension inwardly expansion is formed for bearings mounted circular orientation boss, the outer wall that it is characterized in that described indent extension is the conical surface, and the radial section size of outer wall is increased to the other end gradually by positioning boss one end, and the respective side wall thickness of indent extension increases in the same way.Enlarge the radial section size of outer wall gradually by conical outer wall, effectively increase the sidewall thickness of indent extension, improve this position intensity, enable to bear bigger radial load, this position of casing cracky not in long-term the use, the casing overall work life-span prolongs greatly, and is safe in utilization for a long time, reliable.
The subtended angle α scope that the outer wall conical surface of indent described in the utility model extension forms is 5～10 °, this angular range is comparatively suitable, also be convenient to make, can guarantee that this position has enough working strengths, subtended angle too conference makes the wall thickness increase too fast, cause the waste of manufactured materials, casing is overweight simultaneously also can bring the inconvenience of installing and using.
Subtended angle α described in the utility model is 8.5 °.Test shows this angle the best, and wall thickness is increased between materials, weight and the raising intensity and averages out, and the casing manufacturing cost is comparatively economical.
Casing described in the utility model is the cast steel structure, is made into integration.The casing intensity of one cast steel structure is good, in light weight.
Casing described in the utility model is made for cast steel 42CrMo, and casing has enough intensity and lighter weight.
The utility model is set as pyramidal structure with reductor casing tail end indent extension, the sidewall thickness of indent extension increases from inside to outside gradually, this position intensity of casing improves greatly, can bear big radial load, use not cracky cracking for a long time, the life cycle of gear box prolongs greatly.
[description of drawings]
Fig. 1 is the utility model structural representation.
Among the figure: 1. casing, 2. indent extension, 3. positioning boss, 4. entad cylinder roller bearing, 5. output panel.
[specific embodiment]
What the utility model is described further below in conjunction with the description of drawings specific embodiment.
As shown in Figure 1, concrete mixer truck reductor body structure, its tail end is provided with indent extension 2, the footpath, end of indent extension inwardly expansion is formed for bearings mounted circular orientation boss 3, the outer wall of described indent extension is the conical surface, the radial section size of outer wall is increased to the other end gradually by positioning boss one end, and the respective side wall thickness of indent extension increases in the same way.Reductor casing tail end indent extension is set as pyramidal structure, the sidewall thickness of indent extension increases from inside to outside gradually, and this position intensity of casing improves greatly, can bear big radial load, use not cracky cracking for a long time, the life cycle of gear box prolongs greatly.
In addition, body structure described in the utility model can also increase following technical characterictic and makes product structure more perfect.
The subtended angle α that the outer wall conical surface of described indent extension forms is 8.5 °, and wall thickness is increased between materials, weight and the raising intensity and averages out, and the casing manufacturing cost is comparatively economical.
Described casing is the cast steel structure, is made into integration, and as cast steel 42CrMo, casing intensity is better.
Claims (5)
1, concrete mixer truck reductor body structure, comprise a casing (1), its tail end is provided with indent extension (2), the footpath, end of indent extension inwardly expansion is formed for bearings mounted circular orientation boss (3), the outer wall that it is characterized in that described indent extension is the conical surface, the radial section size of outer wall is increased to the other end gradually by positioning boss one end, and the respective side wall thickness of indent extension increases in the same way.
2, concrete mixer truck reductor body structure according to claim 1 is characterized in that the subtended angle α scope of the outer wall conical surface formation of described indent extension (2) is 5～10 °.
3, concrete mixer truck reductor body structure according to claim 2 is characterized in that described subtended angle α is 8.5 °.
4,, it is characterized in that described casing (1) makes for cast steel according to claim 1 or 2 or 3 described concrete mixer truck reductor body structures.
5, concrete mixer truck reductor body structure according to claim 4 is characterized in that described casing (1) makes for cast steel 42CrMo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201648952U CN201257708Y (en) | 2008-09-27 | 2008-09-27 | Speed reducer box body structure of concrete mixing truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201648952U CN201257708Y (en) | 2008-09-27 | 2008-09-27 | Speed reducer box body structure of concrete mixing truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201257708Y true CN201257708Y (en) | 2009-06-17 |
Family
ID=40771938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201648952U Expired - Fee Related CN201257708Y (en) | 2008-09-27 | 2008-09-27 | Speed reducer box body structure of concrete mixing truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201257708Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115113A (en) * | 2013-03-05 | 2013-05-22 | 徐州科源液压股份有限公司 | Stirring reduction box |
-
2008
- 2008-09-27 CN CNU2008201648952U patent/CN201257708Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115113A (en) * | 2013-03-05 | 2013-05-22 | 徐州科源液压股份有限公司 | Stirring reduction box |
| CN103115113B (en) * | 2013-03-05 | 2015-11-18 | 徐州科源液压股份有限公司 | Stir speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20110927 |