CN202251749U - Jack provided with transmission - Google Patents
Jack provided with transmission Download PDFInfo
- Publication number
- CN202251749U CN202251749U CN2011203425522U CN201120342552U CN202251749U CN 202251749 U CN202251749 U CN 202251749U CN 2011203425522 U CN2011203425522 U CN 2011203425522U CN 201120342552 U CN201120342552 U CN 201120342552U CN 202251749 U CN202251749 U CN 202251749U
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- CN
- China
- Prior art keywords
- gear
- jack
- sleeve
- shaking
- axle
- 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 discloses a jack provided with a transmission. The jack comprises a shell body and a driven shaft, wherein a gearbox body is arranged on a side wall of the shell body, a first gear and a second gear are arranged on an outer side wall of the driven shaft, the diameter of a top circle of the first gear is larger than that of the top circle of the second gear, a rocker shaft is arranged on a side wall of the gearbox body in a penetrating manner, part of the rocker shaft is exposed out of the gearbox body, a third gear and a fourth gear are arranged on an outer side wall of the rocker shaft, and when the rocker shaft slides horizontally, the third gear can be meshed with the first gear or the fourth gear can be meshed with the second gear optionally. The jack provided with the transmission has the advantages of simple structure and low production cost, can jack up an object at a high speed and a low torque when being idle or used for jacking up a lighter object, and can jack up a heavier object at a low speed and a high torque.
Description
Technical field
The utility model relates to a kind of jack, relates in particular to a kind of jack with speed change gear.
Background technique
Jack is a kind of lifting the simplest highly little crane gear.Jack is divided into two kinds of mechanic jacks and hydraulic jack.Mechanic jacks adopts Der Grundsatz der Maschinen, and back and forth to pull handle, pusher dog promptly promotes the revolution of ratchet gap, and bevel pinion drives large bevel gear, makes the rotation of weight lifting screw rod, thereby makes jacking sleeve obtain to hoist or descend, and reaches the function of lifting pulling force.
Be provided with speed change gear at some large-scale jack (also promptly being used for supporting heavier jack); The effect of speed change gear is; When weight is not supported in the jack upper end; Adopt low moment of torsion, mode lifting jack at a high speed, when there is the weight of support the upper end of jack upper end, adopt the mode lifting jack of high moment of torsion, low speed.
At present; Some small-sized jack (yet promptly being used for supporting lighter jack) all are not provided with speed change gear; Bring difficulty to practical operation, because large-scale jack speed change gear is comparatively complicated, therefore unsuitable being placed on the small-sized jack; Otherwise make small-sized jack cost an arm and a leg, can't participate in market competition.Therefore necessary design is a kind of simple in structure, cheap for manufacturing cost and have a small-sized jack of speed change gear.
Summary of the invention
The purpose of the utility model provides a kind of simple in structure, and manufacture cost is comparatively cheap and have a jack of speed change gear.
In order to solve the problems of the technologies described above; The utility model is able to solve through following technical proposals: a kind of jack with speed change gear; Comprise housing, driven shaft, the sidewall of said housing is provided with gearbox casing, and the outer side wall of driven shaft is provided with first gear and second gear; Wherein first addendum circle diameter of gear is greater than the second gear teeth tips diameter of a circle; Be equipped with the axle of shaking the hand on the sidewall of said gearbox casing, the said shaft portion of shaking the hand is exposed to the outside of gearbox casing, and said outer side wall of shaking the hand axle is provided with the 3rd gear and the 4th gear; This shakes the hand axle when its horizontal sliding, selectively makes the 3rd gear and first gear engagement or makes the 4th gear and second gear engagement.
In the technique scheme, the outer side wall of said gearbox casing is provided with first sleeve corresponding to the axle place of shaking the hand, and the outside of said first sleeve is arranged with second sleeve; And the length of said second sleeve is greater than the length of first sleeve; Said footpath of shaking the hand axle upwards offers through hole, is placed with elastic component in this through hole, and the two ends of said elastic component are respectively arranged with push rod; Described push rod leans on the madial wall of first sleeve, and a said end of shaking the hand axle also is provided with the grip part.
In the technique scheme, said elastic component is a spring.
In the technique scheme, said push rod becomes spheroid.
The utility model compared with prior art, have following beneficial effect: the utility model is simple in structure, manufacture cost is comparatively cheap, and when the lighter article of jack zero load or jack-up, jack can be at a high speed, low moment of torsion lifting article.When jack stand during than heavy articles, jack can low speed, high moment of torsion lifting article.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the left view of the utility model.
Fig. 3 is an I place enlarged view among Fig. 1.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
See Fig. 1～3: a kind of jack with speed change gear; Comprise housing 1, driven shaft 3, the sidewall of said housing 1 is provided with gearbox casing 5, and the outer side wall of driven shaft 3 is provided with first gear 7 and second gear 9; Wherein first gear, 7 tip diameters are greater than second gear, 9 tooth top diameter of a circles; Be equipped with the axle 15 of shaking the hand on the sidewall of said gearbox casing 5, axle 15 parts of shaking the hand are exposed to the outside of gearbox casing 5, and said outer side wall of shaking the hand axle 15 is provided with the 3rd gear 11 and the 4th gear 13; This shakes the hand axle 15 when its horizontal sliding, selectively makes the 3rd gear 11 and 7 engagements of first gear or makes the 4th gear 13 and 9 engagements of second gear.
The outer side wall of said gearbox casing 5 is provided with first sleeve 17 corresponding to axle 15 places of shaking the hand; The outside of said first sleeve 17 is arranged with second sleeve 19; And the length of said second sleeve 19 is greater than the length of first sleeve 17; Said footpath of shaking the hand axle 15 upwards offers through hole 150, is placed with elastic component 21 in this through hole 150, and the two ends of said elastic component 21 are respectively arranged with push rod 23; Said push rod 23 leans on the madial wall of first sleeve 17, and a said end of shaking the hand axle 15 also is provided with the grip part.
Preferably, said elastic component 21 is that spring, said push rod 23 are spheroid.
Describes in the face of working principle down: when the lighter article of jack zero load or jack-up, first gear 7 meshes with the 3rd gear 11, at this moment, jack with high speed, hang down moment of torsion lifting article.
When jack stand during than heavy articles, second gear 9 and 13 engagements of the 4th gear, at this moment, jack is with low speed, high moment of torsion lifting article.
Claims (4)
1. jack with speed change gear; Comprise housing (1), driven shaft (3); It is characterized in that the sidewall of said housing (1) is provided with gearbox casing (5), the outer side wall of driven shaft (3) is provided with first gear (7) and second gear (9); Wherein first gear (7) tip diameter is greater than second gear (9) tooth top diameter of a circle; Be equipped with the axle (15) of shaking the hand on the sidewall of said gearbox casing (5), said axle (15) part of shaking the hand is exposed to the outside of gearbox casing (5), and said outer side wall of shaking the hand axle (15) is provided with the 3rd gear (11) and the 4th gear (13); This shakes the hand axle (15) when its horizontal sliding, selectively makes the 3rd gear (11) and first gear (7) mesh or make the 4th gear (13) and second gear (9) engagement.
2. the jack with speed change gear as claimed in claim 1; It is characterized in that; The outer side wall of said gearbox casing (5) locates to be provided with first sleeve (17) corresponding to the axle (15) of shaking the hand; The outside of said first sleeve (17) is arranged with second sleeve (19), and the length of said second sleeve (19) is greater than the length of first sleeve (17), and said footpath of shaking the hand axle (15) upwards offers through hole (150); Be placed with elastic component (21) in this through hole (150); The two ends of said elastic component (21) are respectively arranged with push rod (23), and described push rod (23) leans on the madial wall of first sleeve (17), and a said end of shaking the hand axle (15) also is provided with the grip part.
3. the jack with speed change gear as claimed in claim 2 is characterized in that, said elastic component (21) is a spring.
4. the jack with speed change gear as claimed in claim 2 is characterized in that, said push rod (23) is a spheroid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203425522U CN202251749U (en) | 2011-09-14 | 2011-09-14 | Jack provided with transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203425522U CN202251749U (en) | 2011-09-14 | 2011-09-14 | Jack provided with transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251749U true CN202251749U (en) | 2012-05-30 |
Family
ID=46112995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203425522U Expired - Fee Related CN202251749U (en) | 2011-09-14 | 2011-09-14 | Jack provided with transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251749U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891381A (en) * | 2015-06-04 | 2015-09-09 | 宁波天胜传动件有限公司 | Shiftable mechanical jack |
| CN109019393A (en) * | 2018-08-15 | 2018-12-18 | 杭州恒宏机械有限公司 | Variable-ratio motor-driven jack and its working method |
-
2011
- 2011-09-14 CN CN2011203425522U patent/CN202251749U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891381A (en) * | 2015-06-04 | 2015-09-09 | 宁波天胜传动件有限公司 | Shiftable mechanical jack |
| CN109019393A (en) * | 2018-08-15 | 2018-12-18 | 杭州恒宏机械有限公司 | Variable-ratio motor-driven jack and its working method |
| CN109019393B (en) * | 2018-08-15 | 2020-03-31 | 杭州恒宏机械有限公司 | Variable-speed electric jack and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20200914 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |