CN202390123U - Movable support leg structure for automobile crane - Google Patents
Movable support leg structure for automobile crane Download PDFInfo
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- CN202390123U CN202390123U CN2011205631153U CN201120563115U CN202390123U CN 202390123 U CN202390123 U CN 202390123U CN 2011205631153 U CN2011205631153 U CN 2011205631153U CN 201120563115 U CN201120563115 U CN 201120563115U CN 202390123 U CN202390123 U CN 202390123U
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- cylinder
- supporting legs
- movable supporting
- oil cylinder
- cross cylinder
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Abstract
The utility model provides a movable support leg structure for an automobile crane. The structure comprises a fixing support leg box, a vertical oil cylinder, a primary movable support leg, a first horizontal oil cylinder, a secondary movable support leg and a towline mechanism, wherein the primary movable support leg is inserted into the tail part of the fixing support leg box; the first horizontal oil cylinder is placed in the primary movable support leg and a second horizontal oil cylinder is superposed in the first horizontal oil cylinder; the secondary movable support leg is inserted in the tail part of the primary movable support leg; and the towline mechanism is provided with a towline and a hose; a vertical oil cylinder is arranged at the tail part of the secondary movable support leg; a bidirectional hydraulic lock is arranged on the upper end of the vertical oil cylinder; the bidirectional hydraulic lock is connected with a first pipe and a second pipe which are respectively communicated with a rod cavity and a rodless cavity of the vertical oil cylinder; a first oil passage and a second oil passage are arranged in a piston rod of the first horizontal oil cylinder; the second oil passage is communicated with the rod cavity of the vertical oil cylinder through the bidirectional hydraulic lock; the tail end of the hose is communicated with the rodless cavity of the vertical oil cylinder through the second pipe and the bidirectional hydraulic lock; and the rodless cavity and the rod cavity of the first and second horizontal oil cylinders are communicated respectively. The support leg structure provided by the utility model can realize connection purpose of the secondary movable support leg and the primary movable support leg, can reliably supply oil for the vertical oil cylinder, thus, the problem that oil supply for the vertical oil cylinder is difficult is solved.
Description
Technical field
The utility model provides a kind of car hosit movable supporting legs structure.
Background technology
At present, in the car hosit industry, little tonnage hoisting crane adopts the single-stage movable supporting legs more at home, and the supporting leg span is little, the operating needs of hoister in large tonnage in can not satisfying;
Vertically the fuel lead of oil cylinder is placed directly in movable supporting legs inside; When movable supporting legs stretches, fuel lead normal with movable supporting legs, cross cylinder friction, the rate of wear of fuel lead is fast, the shortening in service life; Like this; Can't carry out fuel feeding to vertical oil cylinder reliably, have the difficult problem of vertical oil cylinder fuel feeding, reduce the stability and the safety of crane job.
Summary of the invention
The utility model technical matters to be solved provides a kind of car hosit movable supporting legs structure, adopts this leg structure, has the following advantages: can reach the purpose that secondary movable supporting legs and one-level movable supporting legs join, the supporting leg span increases; Can carry out fuel feeding to vertical oil cylinder reliably, solve the difficult problem of vertical oil cylinder fuel feeding.
For solving the problems of the technologies described above; The utility model provides a kind of car hosit movable supporting legs structure; It comprises the fixed supporting leg case, vertically oil cylinder, interior one-level movable supporting legs, the level of level insertion fixed supporting leg case afterbody place first cross cylinder in the one-level movable supporting legs; The cylinder barrel of first cross cylinder and one-level movable supporting legs are hinged; It is hinged that the piston rod of first cross cylinder exposes the stem of termination and fixed supporting leg case, and vertically there is bidirectional hydraulic lock the upper end of oil cylinder, and vertically the cylinder bar of oil cylinder is to extending below;
Secondary movable supporting legs level is inserted in the one-level movable supporting legs afterbody; Vertically oil cylinder is arranged on the afterbody of secondary movable supporting legs; Bidirectional hydraulic is locked and is connected to first pipe, second pipe that is communicated with respectively with rod chamber, the rodless cavity of vertical oil cylinder, and first pipe, second pipe penetrate respectively in the secondary movable supporting legs;
The cylinder barrel of second cross cylinder is stacked and placed on the cylinder barrel of first cross cylinder, and it is hinged that the piston rod of second cross cylinder exposes the afterbody of termination and secondary movable supporting legs;
In fixed supporting leg case, one-level movable supporting legs, the secondary movable supporting legs towing chain mechanism is set; Towing chain mechanism by drag chain be placed through drag chain in-to-in flexible pipe and constitute; Drag chain comprises some unit chain links that join successively; The head end of drag chain is fixed in the stem of fixed supporting leg case, and the tail end of drag chain is fixed in the stem of secondary movable supporting legs;
Inherent its of the piston rod of first cross cylinder exposes between the rodless cavity of the termination and first cross cylinder first oil duct arranged; Inherent its of the piston rod of first cross cylinder exposes between the rod chamber of termination and first cross cylinder second oil duct arranged, and second oil duct is communicated with through the rod chamber of bidirectional hydraulic lock with vertical oil cylinder;
Inherent its of the piston rod of second cross cylinder exposes between the rod chamber of termination and second cross cylinder the 3rd oil duct arranged, and the 3rd oil duct is communicated with the rod chamber of vertical oil cylinder through first pipe, bidirectional hydraulic lock;
The tail end of flexible pipe is communicated with the rodless cavity of vertical oil cylinder through second pipe, bidirectional hydraulic lock;
The rodless cavity of first cross cylinder is connected with the rodless cavity of second cross cylinder, and the rod chamber of first cross cylinder is connected with the rod chamber of second cross cylinder.
For can concise description for the purpose of the problem, below the utility model car hosit movable supporting legs structure be all abbreviated as this leg structure.
During use, the head end of first oil duct, second oil duct, the 3rd oil duct, flexible pipe is inserted respectively in the hydraulic control oil circuit of car hosit movable supporting legs.
After adopting above technical scheme, the piston rod through first cross cylinder flexible, it is flexible in the fixed supporting leg case to drive the one-level movable supporting legs; Because of setting up the secondary movable supporting legs and second cross cylinder; Piston rod through second cross cylinder flexible; It is flexible safely and smoothly in the one-level movable supporting legs to drive the secondary movable supporting legs; Can reach the purpose that secondary movable supporting legs and one-level movable supporting legs join, the supporting leg span increases, the operating needs of hoister in large tonnage in can satisfying;
In addition, well-known, drag chain is to be made by high-abrasive material; Can reach back and forth movement service life 5,000,000 times, each unit chain link of drag chain stretches, shrinks, rotates freely, and is easy to installation and maintenance; Noise is low during high-speed motion, resistance to abrasion good, flexible requirement that fully can the meeting tier 2 movable supporting legs, like this; The setting of towing chain mechanism during use, had both been guaranteed the flexible of secondary movable supporting legs; Make again the flexible pipe in the drag chain receive the protection of drag chain (controlled the path of motion of flexible pipe preferably because of drag chain, avoided flexible pipe sagging with swing, do not have relative motion between flexible pipe and the drag chain); Flexible pipe can be flexible not former thereby rubbed and damage because of the secondary movable supporting legs, and the rate of wear of flexible pipe is slow, prolong service life, and the extended distance of flexible pipe is longer; Let the supporting leg span of big distance become possibility, and towing chain mechanism and two cross cylinders combine, can carry out fuel feeding to vertical oil cylinder reliably; Solved the difficult problem of vertical oil cylinder fuel feeding, the stability and the safety that have effectively improved crane job.
The cylinder barrel of said second cross cylinder is stacked and placed on the cylinder barrel of first cross cylinder through fastener.
Description of drawings
Fig. 1 is the structural representation (one-level movable supporting legs, secondary movable supporting legs are in extension state) of this leg structure.
Fig. 2 is the local structure scheme drawing (secondary movable supporting legs, vertical oil cylinder, first cross cylinder, second cross cylinder, towing chain mechanism only are shown) of this leg structure.
Fig. 3 is the birds-eye view of Fig. 2.
Hydraulic schematic diagram when Fig. 4 is the use of this leg structure.
The specific embodiment
Through embodiment and accompanying drawing thereof the utility model is done further explain below:
Referring to Fig. 1-Fig. 4; This leg structure comprises fixed supporting leg case 1, vertically oil cylinder 4, interior one-level movable supporting legs 2, the level of level insertion fixed supporting leg case 1 afterbody place first cross cylinder 5 in the one-level movable supporting legs 2; The cylinder barrel 5a of first cross cylinder 5 and the inwall of one-level movable supporting legs 2 are hinged; It is hinged that the piston rod 5b of first cross cylinder 5 exposes the stem of termination and fixed supporting leg case 1, and vertically there is bidirectional hydraulic lock 9 upper end of oil cylinder 4, and vertically the cylinder bar 4c of oil cylinder 4 is to extending below.
Secondary movable supporting legs 3 levels are inserted in the afterbody of one-level movable supporting legs 2; Vertically oil cylinder 4 is arranged on the afterbody of secondary movable supporting legs 3; Being connected to first pipe, 10, second pipe, 11, the first pipes, 10, second pipe 11 that is communicated with respectively with rod chamber 4a, the rodless cavity 4b of vertical oil cylinder 4 on the bidirectional hydraulic lock 9 penetrates respectively in the secondary movable supporting legs 3.
The cylinder barrel 6a of second cross cylinder 6 is stacked and placed on through fastener on the cylinder barrel 5a of first cross cylinder 5, and it is hinged that the piston rod 6b of second cross cylinder 6 exposes the afterbody of termination and secondary movable supporting legs 3, piston rod 5b, piston rod 6b towards on the contrary.
In fixed supporting leg case 1, one-level movable supporting legs 2, the secondary movable supporting legs 3 towing chain mechanism is set; Towing chain mechanism by drag chain 7 be placed through drag chain 7 in-to-in flexible pipes 8 and constitute; Drag chain 7 comprises some unit chain links that join successively; The head end of drag chain 7 is fixed in the stem of fixed supporting leg case 1, and the tail end of drag chain 7 is fixed in the stem of secondary movable supporting legs 3.
Inherent its of the piston rod 5b of first cross cylinder 5 exposes between the rodless cavity of the termination and first cross cylinder 5 the first oil duct 5d arranged; Inherent its of the piston rod 5b of first cross cylinder 5 exposes between the rod chamber of termination and first cross cylinder 5 the second oil duct 5c arranged, and the second oil duct 5c is communicated with the rod chamber 4a of vertical oil cylinder 4 through oil pipe 5e, bidirectional hydraulic lock 9.
Inherent its of the piston rod 6b of second cross cylinder 6 exposes between the rod chamber of termination and second cross cylinder 6 the 3rd oil duct 6c arranged, and the 3rd oil duct 6c is communicated with the rod chamber 4a of vertical oil cylinder 4 through first pipe 10, bidirectional hydraulic lock 9.
The tail end of flexible pipe 8 is communicated with the rodless cavity 4b of vertical oil cylinder 4 through second pipe 11, bidirectional hydraulic lock 9.
The rodless cavity of first cross cylinder 5 is connected through oil pipe 12 with the rodless cavity of second cross cylinder 6, and the rod chamber of first cross cylinder 5 is connected through oil pipe 13 with the rod chamber of second cross cylinder 6.
During use; The first oil duct 5d is inserted respectively in the hydraulic control oil circuit of car hosit movable supporting legs through the head end of first pipe 10, flexible pipe 8 through oil pipe 5e, the 3rd oil duct 6c through oil pipe 5f, the second oil duct 5c, thereby let this leg structure be connected in the hydraulic control oil circuit of car hosit movable supporting legs.
Above-described only is a kind of embodiment of the utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make conspicuous some conversion or alternative and remodeling, these also should be regarded as belonging to the protection domain of the utility model.
Claims (2)
1. car hosit movable supporting legs structure; Comprise that one-level movable supporting legs, level that fixed supporting leg case, vertical oil cylinder, level are inserted in the fixed supporting leg case afterbody place first cross cylinder in the one-level movable supporting legs; The cylinder barrel of first cross cylinder and one-level movable supporting legs are hinged, and it is hinged that the piston rod of first cross cylinder exposes the stem of termination and fixed supporting leg case, and vertically there is bidirectional hydraulic lock the upper end of oil cylinder; Vertically the cylinder bar of oil cylinder is characterized in that to extending below:
Secondary movable supporting legs level is inserted in the one-level movable supporting legs afterbody; Vertically oil cylinder is arranged on the afterbody of secondary movable supporting legs; Bidirectional hydraulic is locked and is connected to first pipe, second pipe that is communicated with respectively with rod chamber, the rodless cavity of vertical oil cylinder, and first pipe, second pipe penetrate respectively in the secondary movable supporting legs;
The cylinder barrel of second cross cylinder is stacked and placed on the cylinder barrel of first cross cylinder, and it is hinged that the piston rod of second cross cylinder exposes the afterbody of termination and secondary movable supporting legs;
In fixed supporting leg case, one-level movable supporting legs, the secondary movable supporting legs towing chain mechanism is set; Towing chain mechanism by drag chain be placed through drag chain in-to-in flexible pipe and constitute; Drag chain comprises some unit chain links that join successively; The head end of drag chain is fixed in the stem of fixed supporting leg case, and the tail end of drag chain is fixed in the stem of secondary movable supporting legs;
Inherent its of the piston rod of first cross cylinder exposes between the rodless cavity of the termination and first cross cylinder first oil duct arranged; Inherent its of the piston rod of first cross cylinder exposes between the rod chamber of termination and first cross cylinder second oil duct arranged, and second oil duct is communicated with through the rod chamber of bidirectional hydraulic lock with vertical oil cylinder;
Inherent its of the piston rod of second cross cylinder exposes between the rod chamber of termination and second cross cylinder the 3rd oil duct arranged, and the 3rd oil duct is communicated with the rod chamber of vertical oil cylinder through first pipe, bidirectional hydraulic lock;
The tail end of flexible pipe is communicated with the rodless cavity of vertical oil cylinder through second pipe, bidirectional hydraulic lock;
The rodless cavity of first cross cylinder is connected with the rodless cavity of second cross cylinder, and the rod chamber of first cross cylinder is connected with the rod chamber of second cross cylinder.
2. car hosit movable supporting legs structure according to claim 1, it is characterized in that: the cylinder barrel of said second cross cylinder is stacked and placed on the cylinder barrel of first cross cylinder through fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205631153U CN202390123U (en) | 2011-12-29 | 2011-12-29 | Movable support leg structure for automobile crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205631153U CN202390123U (en) | 2011-12-29 | 2011-12-29 | Movable support leg structure for automobile crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202390123U true CN202390123U (en) | 2012-08-22 |
Family
ID=46665063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205631153U Expired - Fee Related CN202390123U (en) | 2011-12-29 | 2011-12-29 | Movable support leg structure for automobile crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202390123U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010180A (en) * | 2012-12-19 | 2013-04-03 | 徐工集团工程机械股份有限公司 | Telescopic support leg device and arm support type engineering machinery equipment |
| CN104944298A (en) * | 2015-07-01 | 2015-09-30 | 北京航天发射技术研究所 | Transport vehicle with rear crane |
| EP2947039A1 (en) * | 2014-05-23 | 2015-11-25 | EPSILON Kran GmbH. | Side support for a crane |
| CN106402088A (en) * | 2016-08-31 | 2017-02-15 | 河南卫特汽车起重机有限公司 | Support oil circuit system |
| CN109532781A (en) * | 2018-12-17 | 2019-03-29 | 青岛金鼎鑫宝专用车辆有限公司 | A kind of engineering truck supporting leg built-in type stretchable hydraulic oil pipe |
-
2011
- 2011-12-29 CN CN2011205631153U patent/CN202390123U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010180A (en) * | 2012-12-19 | 2013-04-03 | 徐工集团工程机械股份有限公司 | Telescopic support leg device and arm support type engineering machinery equipment |
| EP2947039A1 (en) * | 2014-05-23 | 2015-11-25 | EPSILON Kran GmbH. | Side support for a crane |
| CN104944298A (en) * | 2015-07-01 | 2015-09-30 | 北京航天发射技术研究所 | Transport vehicle with rear crane |
| CN106402088A (en) * | 2016-08-31 | 2017-02-15 | 河南卫特汽车起重机有限公司 | Support oil circuit system |
| CN106402088B (en) * | 2016-08-31 | 2017-12-08 | 河南卫华特种车辆有限公司 | A kind of supporting leg oil piping system |
| CN109532781A (en) * | 2018-12-17 | 2019-03-29 | 青岛金鼎鑫宝专用车辆有限公司 | A kind of engineering truck supporting leg built-in type stretchable hydraulic oil pipe |
| CN109532781B (en) * | 2018-12-17 | 2024-04-26 | 青岛金鼎鑫宝专用车辆有限公司 | Built-in telescopic hydraulic oil pipe for engineering vehicle landing leg |
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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: 20120822 Termination date: 20141229 |
|
| EXPY | Termination of patent right or utility model |