CN203601233U - Landing leg assembly and concrete pump truck - Google Patents
Landing leg assembly and concrete pump truck Download PDFInfo
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- CN203601233U CN203601233U CN201320725640.XU CN201320725640U CN203601233U CN 203601233 U CN203601233 U CN 203601233U CN 201320725640 U CN201320725640 U CN 201320725640U CN 203601233 U CN203601233 U CN 203601233U
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- chain
- leg
- drive sprocket
- branching part
- leg assembly
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- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
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Abstract
The utility model provides a landing leg assembly which comprises a first landing leg component, a second landing leg component, a chain, a drive sprocket and a driving mechanism. The first landing leg component and the second landing leg component are matched in a stretching mode, the drive sprocket and the driving mechanism for driving the drive sprocket to rotate are arranged on the first landing leg component, the chain is arranged on the second landing leg component in the stretching direction, the two ends of the chain are fixedly connected with the second landing leg component, and the drive sprocket is in chain transmission connection with the chain. According to the landing leg assembly of the structure, an open-type chain structure is adopted, when the drive sprocket rotates, the chain is driven to move to accordingly drive landing legs to move, and the landing legs are stretched out or retracted back. Compared with a traditional closed type chain structure, the landing leg assembly has the advantages of being small in chain length, light in weight and small in occupied space. In addition, the utility model further provides a concrete pump truck with the landing leg assembly.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of leg assembly and concrete pump truck.
Background technology
On market, widely used concrete pump truck comprises at least four supporting legs, and supporting leg is mainly divided into oscillating-type and concertina type.When operation, concertina type supporting leg need stretch out and be supported on ground, and in traveling process, supporting leg needs to pack up.At present, concrete pump truck telescopic outrigger stretch out and retraction mainly contains the mode such as hydraulic oil cylinder driving, chain drive.
Application number is in 201020197188.0 Chinese patent, a kind of sprocket type extension driver train for telescopic outrigger 1 is disclosed, as shown in Figures 1 and 2, comprise rotating driving device 2, driven sprocket 4, chain 5 and drive sprocket 6, chain 5 is annular, driven sprocket 4 and drive sprocket 6 keep at a certain distance away (being equivalent to landing leg stretching stroke) arrange, chain 5 is around between driven sprocket 4 and drive sprocket 6, rotating driving device 2 drives drive sprocket 6, telescopic outrigger 1 is fixing with chain 5, when chain 5 sway, drive telescopic outrigger 1 to realize flexible.
The landing leg stretching driver train of this class formation, has following deficiency:
First, the chain strip adoption closed type structure of driver train, therefore needed chain 5 length are longer, and weight is larger, and use cost is higher.
Secondly, take up room greatly.Drive sprocket and driven sprocket interval layout, higher to the space requirement of its fixation wall, as limited space, can exert an influence to the extension elongation of supporting leg, therefore, for compare little place, space, cannot use above-mentioned driver train.
In sum, how to provide a kind of take up room little, weight is lighter and lower-cost open leg assembly and have the concrete pump truck of this assembly, has become those skilled in the art to need the technical matters of solution badly.
Utility model content
In view of this, one of problem to be solved in the utility model be how to provide a kind of little with space, weight is lighter and lower-cost open leg assembly.
Two of problem to be solved in the utility model is how a kind of concrete pump truck that comprises above-mentioned leg assembly is provided.
For solving one of problem of the present utility model, the utility model proposes a kind of leg assembly, comprise the first leg branching part, the second leg branching part, chain, drive sprocket and driver train, the first leg branching part and the second leg branching part are flexible to be coordinated, described drive sprocket and the driver train that drives drive sprocket to rotate are arranged on the first leg branching part, described chain is arranged on the second leg branching part along flexible direction, described chain two ends are fixedly connected with the second leg branching part, and drive sprocket and chain chain are in transmission connection.
As the improvement on the one hand of a kind of leg assembly of the utility model, on the first leg branching part, be provided with described chain is pressed in to the driven sprocket on described drive sprocket.
As the improvement on the one hand of a kind of leg assembly of the utility model, driven sprocket is two, is arranged in respectively the both sides of drive sprocket, and the line at described drive sprocket and described two driven sprocket centers forms a triangle.
As the improvement on the one hand of a kind of leg assembly of the utility model, in described the first leg branching part, be provided with slideway, described the second leg branching part is arranged in slideway.
As the improvement on the one hand of a kind of leg assembly of the utility model, between described driver train and described drive sprocket, be also provided with reductor.
As the improvement on the one hand of a kind of leg assembly of the utility model, described driver train is HM Hydraulic Motor or electro-motor.
As the improvement on the one hand of a kind of leg assembly of the utility model, between described the second leg branching part and chain ends, be provided with chain tensioning mechanism.
As the improvement on the one hand of a kind of leg assembly of the utility model, described chain tensioning mechanism comprises fixed block, screw rod and tensioning nut, described fixed block is fixedly installed on the second leg branching part, fixed block is provided with through hole, screw rod one end is fixedly connected with chain, and the other end passes through hole and is spirally connected with tensioning nut.
The leg assembly of said structure, comprises supporting leg, chain, drive sprocket and driver train, and supporting leg comprises having flexible the first leg branching part and the second leg branching part coordinating, and the two ends of chain are fixedly connected with the first leg branching part.The leg assembly of this structure, has adopted open chain structure, in the time that drive sprocket rotates, drives chain to move, thereby drives supporting leg to move, and realizes stretching out or bouncing back of supporting leg.Compared with traditional closed chain structure, have advantages of that chain length is short, lightweight and take up room less.
For solving two of problem of the present utility model, the utility model proposes a kind of concrete pump truck, comprise leg assembly, described leg assembly is leg assembly as above.
As the improvement on the one hand of a kind of concrete pump truck of the utility model, the quantity of described leg assembly is multiple.
Accompanying drawing explanation
The accompanying drawing that forms 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 is used for explaining the utility model, does not form improper restriction of the present utility model.
Fig. 1 is the sprocket type extension driver train schematic diagram of a kind of telescopic outrigger in correlation technique;
Fig. 2 is the schematic diagram of another kind of leg assembly in correlation technique;
Fig. 3 is the structural representation of a kind of leg assembly of the utility model;
Fig. 4 is the birds-eye view of Fig. 3.
In Fig. 1 to Fig. 2, the corresponding relation of Reference numeral is:
1 telescopic outrigger 2 rotating driving device 4 driven sprockets
5 chain 6 drive sprockets
In Fig. 3 to Fig. 4, the corresponding relation of Reference numeral is:
1 chain 2 driven sprocket 3 drive sprockets
4 motor 5 second leg branching part 6 chain tensioning mechanisms
7 first leg branching parts
The specific embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Leg assembly as shown in Figures 3 and 4, comprise the first leg branching part 7 and the second leg branching part 5, chain 1, drive sprocket 3 and driver train, the first leg branching part 7 and the second leg branching part 5 can be box shape assembly, the first leg branching part 7 and the flexible cooperation of the second leg branching part 5, in the first leg branching part 7, be provided with slideway, the second leg branching part 5 is arranged in slideway.Drive sprocket 3 rotates and is arranged on the first leg branching part 7, on the first leg branching part 7, be also provided with the driver train 4 that drives drive sprocket 3 to rotate, described chain 1 is arranged on the second leg branching part 5 along flexible direction, and chain 1 two ends are fixedly connected with the second leg branching part 5.
Particularly, in one embodiment, the first leg branching part 7 is also provided with for chain 1 being pressed in to the driven sprocket 2 on drive sprocket 3 in a side of drive sprocket 3, and chain 1 is arranged between drive sprocket 3 and driven sprocket 2, and is in transmission connection with drive sprocket 3 and driven sprocket 2 chains respectively.
As shown in Figure 3, because the weight of chain 1 itself is larger, when engage with chain 1 on the top of drive sprocket 3, can guarantee fully engaging of chain 1 and drive sprocket 3.Meanwhile, the driven sprocket 2 that is arranged at drive sprocket 3 one sides also has the effect of tension wheel, can increase the cornerite of chain 1 to drive sprocket 3.
In another kind of embodiment, the first leg branching part 7 is also provided with driven sprocket 2 at the opposite side of drive sprocket 3, the quantity that is driven sprocket 2 is two, be arranged at respectively the both sides of drive sprocket 3, the line of centres of drive sprocket 3 and two driven sprockets 2 forms a triangle, is specifically as follows equicrural triangle.This frame mode, chain 1 is larger with the contact range of drive sprocket 3, and transmission effect is best.
In technique scheme, driver train 4 can be electro-motor, can be also HM Hydraulic Motor, for guaranteeing functional reliability and safety, preferred hydraulic motor.It should be noted that, between motor and drive sprocket 3, be also provided with reductor.
In technique scheme, between the second leg branching part 5 and chain 1 end, be also provided with chain tensioning mechanism 6, the quantity of chain tensioning mechanism 6 is two, the two ends of chain 1 are fixedly connected with the second leg branching part 5 by chain tensioning mechanism 6, chain tensioning mechanism 6 can tension chain 1, prevent chain 1 excessively pine cause the chain transmission failure between drive sprocket 3.
Concrete, chain tensioning mechanism 6 comprises fixed block, screw rod and tensioning nut, and fixed block is fixedly installed on the second leg branching part 5, and fixed block is provided with screw, and screw rod one end is fixedly connected with chain 1, and the other end passes through hole and is connected with tensioning nut.Rotate tensioning nut, can make screw rod move along through hole, with tensioning chain 1, prevent chain 1 excessively pine cause chain transmission failure.Chain tensioning mechanism 6, except above-mentioned screw thread stretching device, can also be elastic force stretching device.
The leg assembly of said structure, principle of work is as follows:
As shown in Figure 3, in the time of drive sprocket 3 clickwise, chain 1 moves right, and when chain 1 moves right, will drive the second leg branching part 5 also to move right accordingly.In the time of drive sprocket 3 left-hand revolution, chain 1 is moved to the left, and when chain 1 is moved to the left, will drive the second leg branching part 5 to be also moved to the left accordingly.Therefore,, in the cw or left-hand revolution of drive sprocket 3, realized stretching out or bouncing back of the second leg branching part 5.
The leg assembly of said structure, tool has the following advantages:
First, the leg assembly of this structure, has adopted open chain structure, compared with traditional closed chain structure, has short, the lightweight advantage of chain length.
Secondly, compact conformation, takes up room little.The leg assembly of said structure, because the two ends of chain 1 are all arranged on the second leg branching part 5, the adjacent setting of drive sprocket and driven sprocket, therefore, overall structure is comparatively compact, takes up room less.
Finally, cost is relatively low, is easy to promote.The leg assembly of said structure, due to the contraction in length of chain 1, therefore, the corresponding reduction of cost, is easy to promote the use.
The utility model also proposes a kind of concrete pump truck, comprises the leg assembly of being located on vehicle body, and this leg assembly is leg assembly as above.The quantity that is noted that leg assembly is multiple.
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 modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a leg assembly, comprise the first leg branching part (7), the second leg branching part (5), chain (1), drive sprocket (3) and driver train (4), the first leg branching part (7) and the second leg branching part (5) are flexible to be coordinated, described drive sprocket (3) and the driver train (4) that drives drive sprocket (3) to rotate are arranged on the first leg branching part (7), it is characterized in that, described chain (1) is arranged on the second leg branching part (5) along flexible direction, described chain (1) two ends are fixedly connected with the second leg branching part (5), drive sprocket (3) is in transmission connection with chain chain.
2. leg assembly according to claim 1, is characterized in that, is provided with described chain (1) is pressed in to the driven sprocket (2) on described drive sprocket (3) on the first leg branching part (7).
3. leg assembly according to claim 2, it is characterized in that, described driven sprocket (2) is two, is arranged in respectively the both sides of drive sprocket (3), and the line at described drive sprocket (3) and described two driven sprockets (2) center forms a triangle.
4. leg assembly according to claim 1, is characterized in that, in described the first leg branching part (7), is provided with slideway, and described the second leg branching part (5) is arranged in slideway.
5. leg assembly according to claim 1, is characterized in that, between described driver train (4) and described drive sprocket (3), is also provided with reductor.
6. leg assembly according to claim 1, is characterized in that, described driver train (4) is HM Hydraulic Motor or electro-motor.
7. according to the leg assembly described in any one in claim 1 to 6, it is characterized in that, between described the second leg branching part (5) and chain (1) end, be provided with chain tensioning mechanism (6).
8. leg assembly according to claim 7, it is characterized in that, described chain tensioning mechanism comprises fixed block, screw rod and tensioning nut, described fixed block is fixedly installed on the second leg branching part (5), fixed block is provided with through hole, screw rod one end is fixedly connected with chain (1), and the other end passes through hole and is spirally connected with tensioning nut.
9. a concrete pump truck, comprises leg assembly, it is characterized in that, described leg assembly is the leg assembly described in any one in claim 1 to 8.
10. concrete pump truck according to claim 9, is characterized in that, the quantity of described leg assembly is multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320725640.XU CN203601233U (en) | 2013-11-13 | 2013-11-13 | Landing leg assembly and concrete pump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320725640.XU CN203601233U (en) | 2013-11-13 | 2013-11-13 | Landing leg assembly and concrete pump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203601233U true CN203601233U (en) | 2014-05-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320725640.XU Expired - Lifetime CN203601233U (en) | 2013-11-13 | 2013-11-13 | Landing leg assembly and concrete pump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203601233U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106274842A (en) * | 2016-08-30 | 2017-01-04 | 北汽福田汽车股份有限公司 | Supporting leg retractable mechanism and engineering machinery |
-
2013
- 2013-11-13 CN CN201320725640.XU patent/CN203601233U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106274842A (en) * | 2016-08-30 | 2017-01-04 | 北汽福田汽车股份有限公司 | Supporting leg retractable mechanism and engineering machinery |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |