CN203698242U - Supporting leg and engineering vehicle provided with same - Google Patents
Supporting leg and engineering vehicle provided with same Download PDFInfo
- Publication number
- CN203698242U CN203698242U CN201320775106.XU CN201320775106U CN203698242U CN 203698242 U CN203698242 U CN 203698242U CN 201320775106 U CN201320775106 U CN 201320775106U CN 203698242 U CN203698242 U CN 203698242U
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- CN
- China
- Prior art keywords
- slideway
- telescopic boom
- supporting leg
- joint arm
- telescopic
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- 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.)
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- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The utility model discloses a supporting leg and an engineering vehicle provided with the supporting leg. The supporting leg comprises a supporting table, a telescopic arm, a telescopic arm oil cylinder and a supporting oil cylinder, wherein the supporting table is provided with a slideway; the telescopic arm is arranged in the slideway and can slide along the slideway in a telescopic way; the telescopic arm oil cylinder is arranged inside the telescopic arm; the supporting oil cylinder is arranged at one end part of the telescopic arm; the extending direction of the slideway inclines downwards relative to the horizontal direction, and the downward-inclination angle of the slideway relative to the horizontal direction is smaller than 10 degrees. The supporting leg has the benefits that by changing the arrangement way of the sldieway in the supporting table, the extending direction of the slideway inclines downwards relative to the horizontal direction, so that the extending direction of the telescopic arm also inclines downwards relative to the horizontal direction; the downward motion of the telescopic arm compensates the upward bending deformation of the telescopic arm, so that the supporting leg can fully support the vehicle when in use, and wheels of the vehicle can leave the ground, and an ideal effect is achieved. The service performance of the supporting leg is effectively improved.
Description
Technical field
The utility model relates to engineering truck technical field, particularly relates to a kind of supporting leg and has the engineering truck of this supporting leg.
Background technology
Along with the raising of design level and the enhancing of manufacturing capacity, the length of the jib in the engineering trucks such as concrete pump truck is more and more longer, so the length of supporting leg also can be accordingly more and more longer, like this, just there is the multi-stage expansion supporting leg such as secondary telescopic outrigger, three grades of telescopic outriggers.
As shown in Figure 1, it comprises secondary telescopic outrigger of the prior art: brace table 11, telescopic boom (one-level joint arm 13 and secondary joint arm 14), telescopic boom cylinder 15 and support cylinder 16; Brace table 11 is provided with the slideway 12 that bearing of trend is horizontal direction, one-level joint arm 13 is located in slideway 12 and can be along slideway telescopic slide, secondary joint arm 14 is located in one-level joint arm 13 and can saves along one-level the slideway telescopic slide of arm 13, telescopic boom cylinder 15 is located at the inside of described telescopic boom, the flexible propulsive effort that provides of described telescopic boom is provided, support cylinder 16 is located at the end of described telescopic boom, for supporting ground.
When concrete pump truck is not worked, telescopic boom cylinder 15 and support cylinder 16 are in retracted state, and described telescopic boom is retracted in the slideway 12 of brace table 11; Need to launch before jib at concrete pump truck, supporting leg need to be propped, supporting leg supports concrete pump truck, make the wheel built on stilts of concrete pump truck, now, first worked by telescopic boom cylinder 13, drive described telescopic boom to launch, one-level joint arm 13 horizontally outward slides and stretches out along the slideway 12 of brace table 11, secondary joint arm 14 horizontally outward slides and stretches out along the slideway of one-level joint arm 13, after described telescopic boom launches completely, worked by support cylinder 16, support cylinder 16 contacts until supporting leg is propped completely with ground.
Telescopic outrigger in industry at present, oscillating support legs etc. all adopt the leg structure of above-mentioned this horizontal extension, due to the gap between each joint arm of telescopic boom, gap between telescopic boom and brace table 11, and the stress deformation of knot telescopic boom, when concrete pump truck is supported by supporting leg, the end of telescopic boom can be toward upwarping, as shown in Figure 2, wherein D is the displacement that after telescopic boom distortion, end upwarps, if this distortion is excessive, will cause support cylinder 16 strokes inadequate, the tire of concrete pump truck cannot built on stilts, the object that supporting leg out of reach supports concrete pump truck completely.
So, need a kind of supporting leg to overcome or at least alleviate above-mentioned defect of the prior art.
Utility model content
The purpose of this utility model is to provide a kind of supporting leg to overcome or at least alleviates above-mentioned defect of the prior art.
For achieving the above object, the utility model provides a kind of supporting leg, comprise brace table, telescopic boom, telescopic boom cylinder and support cylinder, described brace table is provided with slideway, described telescopic boom is located in described slideway and can be along described slideway telescopic slide, described telescopic boom cylinder is located at the inside of described telescopic boom, described support cylinder is located at the end of described telescopic boom, the bearing of trend of described slideway is downward-sloping with respect to horizontal direction, wherein, described slideway is linear slideway, described telescopic boom is the linear telescopic boom corresponding with described linear slideway, and the described slideway angle downward-sloping with respect to horizontal direction is less than 10 °, or described slideway is circular arc slideway, described telescopic boom is the circular arc telescopic boom corresponding with described circular arc slideway, and the line angle downward-sloping with respect to horizontal direction between described slideway two ends is less than 10 °.
Preferably, described telescopic boom is multistage telescopic arm.
Preferably, described telescopic boom comprises one-level joint arm and secondary joint arm, and described secondary joint arm is located in described one-level joint arm and can saves arm telescopic slide along described one-level.
Preferably, described support cylinder is located at the end of described secondary joint arm and the end perpendicular to described secondary joint arm.
The utility model also provides a kind of engineering truck, and described engineering truck comprises described supporting leg.
Preferably, described engineering truck is concrete pump truck.
Supporting leg of the present utility model is by changing the set-up mode of brace table middle slideway, make the bearing of trend of slideway downward-sloping with respect to horizontal direction, thereby make telescopic boom to stretch out direction also downward-sloping with respect to horizontal direction, the motion compensation that telescopic boom is downward telescopic boom flexural deformation upwards, while having guaranteed that supporting leg is propped, supporting leg can support vehicle completely, make the wheel built on stilts of vehicle, reach desirable support effect, in the situation that not increasing supporting leg weight and productive costs, effectively improve the in-use performance of supporting leg.
Accompanying drawing explanation
Fig. 1 is the supporting leg of the prior art constructional drawing in deployed condition and while not being out of shape;
Fig. 2 is the supporting leg of the prior art constructional drawing in deployed condition and while deforming;
Fig. 3 is the supporting leg of the utility model embodiment 1 constructional drawing in the time of deployed condition;
Fig. 4 is the supporting leg of the utility model embodiment 2 constructional drawing in the time of deployed condition.
Reference numeral:
| 11 | Brace table | 24 | Secondary joint arm |
| 12 | Slideway | 25 | Telescopic boom cylinder |
| 13 | One-level joint arm | 26 | Support cylinder |
| 14 | Secondary joint arm | 31 | Brace table |
| 15 | Telescopic boom cylinder | 32 | Slideway |
| 16 | Support cylinder | 33 | One-level joint arm |
| 21 | Brace table | 34 | Secondary joint arm |
| 22 | Slideway | 35 | Telescopic boom cylinder |
| 23 | One-level joint arm | 36 | Support cylinder |
The specific embodiment
For object, technical scheme and advantage that the utility model is implemented are clearer, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is further described in more detail.In the accompanying drawings, same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Described embodiment is the utility model part embodiment, rather than whole embodiment.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as the restriction to the utility model protection domain.
Embodiment 1
As shown in Figure 3, the supporting leg of the present embodiment comprises: brace table 21, telescopic boom, telescopic boom cylinder 25 and support cylinder 26, described telescopic boom is secondary telescopic boom, and it comprises one-level joint arm 23 and secondary joint arm 24, and brace table 21 is provided with the slideway 22 sliding for described telescopic boom.
Brace table 21 is fixed on vehicle body, described telescopic boom is located in slideway 22 and can be along the bearing of trend telescopic slide of slideway 22, wherein, one-level joint arm 23 is inserted in slideway 22 and can be along the bearing of trend telescopic slide of slideway 22, one-level joint arm 23 is also provided with slideway, and secondary joint arm 24 is inserted in the slideway of one-level joint arm 23 and can saves arm 23 telescopic slide along one-level.Telescopic boom cylinder 25 is used to the telescopic slide of described telescopic boom that propulsive effort is provided.In the illustrated embodiment, telescopic boom cylinder 25 is located at the inside of described telescopic boom, but also can only partly be arranged in described telescopic boom, or is arranged on outside telescopic boom as required.Support cylinder 26 is for providing the bearing force of vertical direction.In the illustrated embodiment, support cylinder 26 is located at the end of telescopic boom, is more specifically located at the end of secondary joint arm 24.Advantageously, support cylinder 26 is perpendicular to the end of secondary joint arm 24, so that vertical direction bearing force to be provided better.
The slideway 22 of brace table 21 is linear slideway, and described telescopic boom is the linear telescopic boom corresponding with described linear slideway structure.
Slideway 22 extends to construction machinery and equipment outside (left side in Fig. 3) from the inner side (right side Fig. 3) of the construction machinery and equipment such as hoisting crane.In Fig. 3, slideway 22 extends from right to left, and its bearing of trend is with respect to the downward-sloping angle of horizontal direction.As shown in Figure 3, described angle of inclination is: 90 °-α.Because the bearing of trend of slideway 22 is downward-sloping with respect to horizontal direction, the telescopic slide direction that is located at the described telescopic boom in slideway 22 also can be downward-sloping with respect to horizontal direction, like this, when the outside slip of described telescopic boom is stretched out, it has displacement in the horizontal direction with on vertical direction, and the displacement of its in the vertical direction (downward displacement) just can compensate the flexural deformation upwards of described telescopic boom end, thereby guarantee the support effect of supporting leg, in the time propping, supporting leg can support vehicle completely, makes the wheel built on stilts of vehicle.Angle under described being tilted to can afford redress to the distortion of telescopic boom.
Advantageously, described angle of inclination should be less than 10 °, and such angle of inclination can make described telescopic boom outwards slide while stretching out, has displacement straight down, and displacement is straight down not too large, prevents that described telescopic boom from too tilting.The concrete numerical value at described angle of inclination should be determined according to conditions such as actual telescopic boom length and the vehicle weights that need to support, as longer in telescopic boom, vehicle weight is larger, described angle of inclination is just larger, the supporting leg of the present embodiment is secondary telescopic outrigger, and its corresponding slideway angle of inclination is preferably 5 °.
Embodiment 2
As shown in Figure 4, the supporting leg of the present embodiment comprises: brace table 31, telescopic boom, telescopic boom cylinder 35 and support cylinder 36, described telescopic boom is secondary telescopic boom, and it comprises one-level joint arm 33 and secondary joint arm 34, and brace table 31 is provided with the slideway 32 sliding for described telescopic boom.
Brace table 31 is fixed on vehicle body, described telescopic boom is located in slideway 32 and can be along the bearing of trend telescopic slide of slideway 32, wherein, one-level joint arm 33 is inserted in slideway 32 and can be along the bearing of trend telescopic slide of slideway 32, one-level joint arm 33 is also provided with slideway, secondary joint arm 34 is inserted in the slideway of one-level joint arm 33 and can saves arm 33 telescopic slide along one-level, telescopic boom cylinder 35 is located at the inside of described telescopic boom, be used to the telescopic slide of described telescopic boom that propulsive effort is provided, in the illustrated embodiment, telescopic boom cylinder 35 is located at the inside of described telescopic boom, but also can only partly be arranged in described telescopic boom, or be arranged on outside telescopic boom as required.Support cylinder 36 is for providing the bearing force of vertical direction.In the illustrated embodiment, support cylinder 36 is located at the end of telescopic boom, is more specifically located at the end of secondary joint arm 34.Advantageously, support cylinder 36 is perpendicular to the end of secondary joint arm 34, so that vertical direction bearing force to be provided better.
The slideway 32 of brace table 31 is circular arc slideway, and described telescopic boom is the circular arc telescopic boom corresponding with described circular arc slideway structure, and the central angle of slideway 32, one-level joint arm 33 and secondary joint arm 34 is identical and diameter is different.
The tangential direction of the inner one end of slideway 32 is horizontal direction, and the bearing of trend of slideway 32 is downward-sloping with respect to horizontal direction, its downward-sloping degree is decided by the line angle downward-sloping with respect to horizontal direction between described circular arc slideway two ends.Because the bearing of trend of slideway 32 is downward-sloping with respect to horizontal direction, the telescopic slide direction that is located at the described telescopic boom in slideway 32 also can be downward-sloping with respect to horizontal direction, like this, when the outside slip of described telescopic boom is stretched out, it has displacement in the horizontal direction with on vertical direction, and the displacement of its in the vertical direction (downward displacement, d) just can compensate the flexural deformation upwards of described telescopic boom end as shown in Figure 4, thereby guarantee the support effect of supporting leg, in the time propping, supporting leg can support vehicle completely, make the wheel built on stilts of vehicle, and, when the supporting leg of the present embodiment is propped, be circular arc, its similar and arch bridge, embodiment 1 is better for its support effect arm, the flexural deformation of telescopic boom is also relatively less, but, the structure of this circular arc slideway and circular arc telescopic boom is more complicated than the linear slideway of embodiment 1 and linear pattern telescopic boom, productive costs is also relative larger with manufacture difficulty.
The line angle downward-sloping with respect to horizontal direction between described circular arc slideway two ends is less than 10 °, such angle of inclination can make described telescopic boom outwards slide while stretching out, have displacement straight down, and displacement is straight down not too large, prevents that described telescopic boom from too tilting.The concrete numerical value at described angle of inclination should be determined according to conditions such as actual telescopic boom length and the vehicle weights that need to support, as longer in telescopic boom, vehicle weight is larger, described angle of inclination is just larger, and the supporting leg of the present embodiment is secondary telescopic outrigger, and its corresponding angle of inclination is preferably 5 °.
Supporting leg of the present utility model can be also the telescopic outrigger of other progression, and the angle of inclination of the slideway of supporting seat also should suitably be adjusted according to the progression of supporting leg, those skilled in the art should select according to actual conditions the supporting leg of suitable number of stages, repeat no more herein.
The utility model also provides a kind of engineering truck, and described engineering truck comprises described supporting leg, the engineering truck that described engineering truck needs supporting leg that car load is propped can be concrete pump truck or other work time.
Supporting leg of the present utility model is by changing the set-up mode of brace table middle slideway, make the bearing of trend of slideway downward-sloping with respect to horizontal direction, thereby make telescopic boom to stretch out direction also downward-sloping with respect to horizontal direction, the motion compensation that telescopic boom is downward telescopic boom flexural deformation upwards, while having guaranteed that supporting leg is propped, supporting leg can support vehicle completely, make the wheel built on stilts of vehicle, reach desirable support effect, in the situation that not increasing supporting leg weight and productive costs, effectively improve the in-use performance of supporting leg.
Finally it is to be noted: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit.Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of the each embodiment technical scheme of the utility model.
Claims (6)
1. a supporting leg, comprise brace table, telescopic boom, telescopic boom cylinder and support cylinder, described brace table is provided with slideway, described telescopic boom is located in described slideway and can be along described slideway telescopic slide, described telescopic boom cylinder is located at the inside of described telescopic boom, and described support cylinder is located at the end of described telescopic boom, it is characterized in that, the bearing of trend of described slideway is downward-sloping with respect to horizontal direction
Wherein, described slideway is linear slideway, and described telescopic boom is the linear telescopic boom corresponding with described linear slideway, and the described slideway angle downward-sloping with respect to horizontal direction be less than 10 °,
Or described slideway is circular arc slideway, described telescopic boom is the circular arc telescopic boom corresponding with described circular arc slideway, and the line angle downward-sloping with respect to horizontal direction between described slideway two ends is less than 10 °.
2. the supporting leg as described in claim 1-, is characterized in that, described telescopic boom is multistage telescopic arm.
3. supporting leg as claimed in claim 2, is characterized in that, described telescopic boom comprises one-level joint arm and secondary joint arm, and described secondary joint arm is located in described one-level joint arm and can saves arm telescopic slide along described one-level.
4. supporting leg as claimed in claim 3, is characterized in that, described support cylinder is located at the end of described secondary joint arm and the end perpendicular to described secondary joint arm.
5. an engineering truck, is characterized in that, described engineering truck comprises the supporting leg described in any one in claim 1-4.
6. engineering truck as claimed in claim 5, is characterized in that, described engineering truck is concrete pump truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320775106.XU CN203698242U (en) | 2013-11-29 | 2013-11-29 | Supporting leg and engineering vehicle provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320775106.XU CN203698242U (en) | 2013-11-29 | 2013-11-29 | Supporting leg and engineering vehicle provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203698242U true CN203698242U (en) | 2014-07-09 |
Family
ID=51048723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320775106.XU Expired - Fee Related CN203698242U (en) | 2013-11-29 | 2013-11-29 | Supporting leg and engineering vehicle provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203698242U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133514A (en) * | 2015-09-18 | 2015-12-09 | 中泰国际高新技术有限公司 | Box culvert car |
| 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
- 2013-11-29 CN CN201320775106.XU patent/CN203698242U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133514A (en) * | 2015-09-18 | 2015-12-09 | 中泰国际高新技术有限公司 | Box culvert car |
| CN105133514B (en) * | 2015-09-18 | 2017-06-09 | 中泰国际高新技术有限公司 | Box culvert car |
| 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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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: 20140709 Termination date: 20181129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |