CN202575784U - Large-tonnage lorry-mounted crane with double hydraulic telescopic tail legs - Google Patents
Large-tonnage lorry-mounted crane with double hydraulic telescopic tail legs Download PDFInfo
- Publication number
- CN202575784U CN202575784U CN 201220236942 CN201220236942U CN202575784U CN 202575784 U CN202575784 U CN 202575784U CN 201220236942 CN201220236942 CN 201220236942 CN 201220236942 U CN201220236942 U CN 201220236942U CN 202575784 U CN202575784 U CN 202575784U
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- mounted crane
- leg
- lorry
- tail leg
- tonnage
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- Expired - Fee Related
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Abstract
The utility model relates to a large-tonnage lorry-mounted crane with double hydraulic telescopic tail legs. Two telescopic tail legs are mounted below a pedestal of a lorry-mounted crane, a support hydraulic cylinder is mounted on each telescopic tail leg, and a hydraulic oil cylinder is connected and communicated with one of multichannel reversing valves. According to the large-tonnage lorry-mounted crane with double hydraulic telescopic tail legs, the stress of the hydraulic telescopic leg can be well lowered, the safety factor of the whole machine is improved, the anti-overturning capacity of the large-tonnage lorry-mounted crane in the elevating operation is improved, the possibility of the safety misadventure is decreased, and meanwhile, the stress of the hydraulic telescopic legs is lowered.
Description
Technical field
The utility model belongs to the lorry-mounted crane technical field, relates to a kind ofly matching with hydraulically extensible leg and hydraulically extensible leg additional leg, the large-tonnage lorry-mounted crane biliquid pressure stretch that can reduce the stress of the hydraulically extensible leg tail leg that contracts.
Background technology
Domestic existing lorry-mounted crane has only a hydraulic pressure tail leg or does not have hydraulic pressure tail leg and support; This supporting way generally is used for the lorry-mounted crane of less tonnage; Along with the development of lorry-mounted crane and universal gradually, this supporting way has also become development tendency in the application of large-tonnage lorry-mounted crane, and the load-carrying ability of large-tonnage lorry-mounted crane is strong, swinging radius is big; Stability during loop wheel machine work becomes important problem, therefore complete machine is supported and has higher requirement.Can be known that by the lorry-mounted crane hoisting test stress maxim appears on the hydraulically extensible leg in whole the lorry-mounted crane, the minimum safety factor of its safety factor and materials used is more approaching.
The utility model content
In order to overcome the above-mentioned shortcoming of prior art; The utility model provides a kind of and matches with hydraulically extensible leg and hydraulically extensible leg additional leg; Can reduce the stress of hydraulically extensible leg; Resistance to capsizing when improving the complete machine hoisting operation, the large-tonnage lorry-mounted crane biliquid pressure stretch that improves the intensity of the hydraulically extensible tail leg tail leg that contracts.
The utility model solves the technical scheme that its technical matters adopted: a kind of large-tonnage lorry-mounted crane biliquid pressure stretch tail leg that contracts; Two flexible tail legs are installed below the lorry-mounted crane base; On every flexible tail leg, a supporting cylinder is installed, wherein linking in this hydraulic ram and the multiple directional control valve.
Said supporting cylinder vertically is stuck on the flexible tail leg with shaft block ring.
The rear end of said hydraulically extensible tail leg is provided with flexible tail leg case, and flexible tail leg case is connected the base below of lorry-mounted crane through high-strength plate with the mode of welding, is connected the both sides of chassis ridgepole through the high-strength plate tail leg case that will stretch again.
Be provided with telescopic hydraulic cylinder at said flexible tail leg box back, said telescopic hydraulic cylinder is installed in telescopic hydraulic cylinder two on flexible tail leg case and the flexible tail leg respectively through former and later two locating dowel pins.
The beneficial effect of the utility model is: the stress that can reduce the hydraulically extensible leg well; Improve the complete machine safety factor; Promote the resistance to capsizing of large-tonnage lorry-mounted crane when hoisting operation, reduce the possibility that safety misadventure occurs, can reduce the stress of hydraulically extensible leg simultaneously.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 be among Fig. 1 P to structural representation.
Among the figure: 1-supporting cylinder, the 2-tail leg that stretches, the 3-tail leg case that stretches, 4-telescopic hydraulic cylinder, 5, the 6-locating dowel pin, 7-shaft block ring, 8, the high-strength plate plate of 9-, 10-chassis ridgepole.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Referring to Fig. 1 and Fig. 2; A kind of large-tonnage lorry-mounted crane biliquid pressure stretch tail leg that contracts; Two flexible tail legs 2 are installed below the lorry-mounted crane base; On every flexible tail leg 2, a supporting cylinder 1 is installed, with wherein the stretching of a control supporting cylinder 1 in the multiple directional control valve, to realize flexible tail leg 2 crank motions; This supporting cylinder 1 usefulness shaft block ring 7 vertically is stuck on the flexible tail leg 2; Be provided with flexible tail leg case 3 in the rear end of hydraulically extensible tail leg 2, flexible tail leg case 3 is connected the base below of lorry-mounted crane through high-strength plate 8 with the mode of welding, is connected the both sides of chassis ridgepole through the high-strength plate 9 tail leg case 3 that will stretch again; Be provided with telescopic hydraulic cylinder 4 in said flexible tail leg case 3 rear ends, said telescopic hydraulic cylinder 4 is installed in telescopic hydraulic cylinder 4 two on flexible tail leg case 3 and the flexible tail leg 2 respectively through former and later two locating dowel pins 5,6.
When the rodless cavity of telescopic hydraulic cylinder 4 advanced hydraulic oil, flexible tail leg 2 stretched out from flexible tail leg case 3; When the rod chamber of telescopic hydraulic cylinder 4 advances hydraulic oil, in the flexible tail leg case 3 of flexible tail leg 2 withdrawals.
When the rodless cavity of supporting cylinder 1 advanced hydraulic oil, piston rod stretched out support ground, and complete machine is propped up; When the rod chamber of supporting cylinder 1 advanced hydraulic oil, piston rod stretched out, and complete machine is got back to the home position.
The utility model can reduce the stress of hydraulically extensible leg well, improves the complete machine safety factor, promotes the resistance to capsizing of large-tonnage lorry-mounted crane when hoisting operation, reduces the possibility that safety misadventure occurs, can reduce the stress of hydraulically extensible leg simultaneously.
Claims (4)
1. the large-tonnage lorry-mounted crane biliquid pressure stretch tail leg that contracts; It is characterized in that: two flexible tail legs are installed below the lorry-mounted crane base; On every flexible tail leg, a supporting cylinder is installed, wherein linking in this hydraulic ram and the multiple directional control valve.
2. the large-tonnage lorry-mounted crane biliquid pressure stretch tail leg that contracts according to claim 1, it is characterized in that: said supporting cylinder vertically is stuck on the flexible tail leg with shaft block ring.
3. the large-tonnage lorry-mounted crane biliquid pressure stretch tail leg that contracts according to claim 1; It is characterized in that: the rear end of said hydraulically extensible tail leg is provided with flexible tail leg case; Flexible tail leg case is connected the base below of lorry-mounted crane through high-strength plate with the mode of welding, is connected the both sides of chassis ridgepole through the high-strength plate tail leg case that will stretch again.
4. the pressure stretch tail leg that contracts like the said large-tonnage lorry-mounted crane of claim 3 biliquid; It is characterized in that: be provided with telescopic hydraulic cylinder at said flexible tail leg box back, said telescopic hydraulic cylinder is installed in telescopic hydraulic cylinder two on flexible tail leg case and the flexible tail leg respectively through former and later two locating dowel pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220236942 CN202575784U (en) | 2012-05-24 | 2012-05-24 | Large-tonnage lorry-mounted crane with double hydraulic telescopic tail legs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220236942 CN202575784U (en) | 2012-05-24 | 2012-05-24 | Large-tonnage lorry-mounted crane with double hydraulic telescopic tail legs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202575784U true CN202575784U (en) | 2012-12-05 |
Family
ID=47245220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220236942 Expired - Fee Related CN202575784U (en) | 2012-05-24 | 2012-05-24 | Large-tonnage lorry-mounted crane with double hydraulic telescopic tail legs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202575784U (en) |
-
2012
- 2012-05-24 CN CN 201220236942 patent/CN202575784U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20210524 |