CN101698407B - Movable type engineering machine and support leg device thereof - Google Patents
Movable type engineering machine and support leg device thereof Download PDFInfo
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- CN101698407B CN101698407B CN2009102221652A CN200910222165A CN101698407B CN 101698407 B CN101698407 B CN 101698407B CN 2009102221652 A CN2009102221652 A CN 2009102221652A CN 200910222165 A CN200910222165 A CN 200910222165A CN 101698407 B CN101698407 B CN 101698407B
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Abstract
The invention discloses a support leg device used for a movable type engineering machine, comprising a fixed support leg box (1), wherein a first movable support leg (21) arranged on the fixed support leg box (1) is provided with a first gear (31), and the fixed support leg box (1) is provided with a first rack (41) meshed with the first gear (31); the first movable support leg (21) is provided with a second gear (32), and a second movable support leg (22) arranged on the first movable support leg (21) is provided with a second rack (42) meshed with the second gear (32); and the first gear (31) is linked with the second gear (32) under the action of a connecting part, and the first movable support leg (21) and the second movable support leg (22) move towards the same direction. By adopting a rack and pinion pair, the support leg device can be stretched, has simpler structure and simplifies the processing technique. The invention also discloses the movable type engineering machine including the support leg device.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of support leg device that is used for movable type engineering machine.The invention still further relates to a kind of movable type engineering machine that comprises above-mentioned support leg device.
Background technology
Along with the fast development of China's economic construction, various movable type engineering machines are applied to the every field of economic construction more and more widely.
In more large-scale movable type engineering machine such as hoisting crane, concrete pump truck, support leg device has irreplaceable effect as the important component part of equipment.In more large-scale movable type engineering machine, generally have a plurality of support leg devices, the effect of these support leg devices is when equipment availability, for equipment provides support power; Particularly, when equipment is in non-operating condition, need to move when cutting to; Each support leg device is recovered to suitable shift position, and not for equipment provides support power, each support leg device can rotate and stretch; And before equipment was getting into operating condition, support leg device was stretched out, and is supported in ground; For equipment provides support power, increase the Area of bearing of equipment simultaneously, avoid equipment at work owing to not enough the caving in of taking place of bearing force; Perhaps topple, improved the safety in utilization of equipment owing to Area of bearing is too small.
At present, generally adopt the structure of multi-stage expansion oil cylinder or single cylinder rope row formula to realize the flexible of support leg device.
Please refer to Fig. 1, Fig. 1 is a kind of structural representation of support leg device of representative type multi-stage oil cylinder driving.
The support leg device of this kind typical structure comprises fixed supporting leg case 21; And the one-level movable supporting legs 22 and secondary movable supporting legs 23 that are installed on this fixed supporting leg case 21 successively; Multi-stage oil cylinder 24 is arranged in the supporting leg chamber of secondary movable supporting legs 23; Above-mentioned multi-stage oil cylinder 24 is the multilayer telescoping cylinder; Its pistons at different levels are arranged in the previous stage piston rod, and wherein each grade piston rod is captiveed joint with corresponding supporting leg respectively, stretching out or regaining and drive movable supporting legs at different levels and stretch out or withdraw through each grade piston rod.
In above-mentioned representative type support leg device structure; Because each grade piston of multi-stage oil cylinder 24 need be nested in its upper class piston rod; Having relatively high expectations of quality of fit between the component at different levels, processing technology are comparatively complicated, and Installation and Debugging and maintenance be difficulty comparatively; And the deadweight of the support leg device of this kind structure is bigger, has limited the further raising of support leg device load-carrying capacity.
Therefore; How to simplify the structure of support leg device, reduce the accuracy requirement between each component, thereby reduce the processing technology complexity; Reduce the degree of difficulty of Installation and Debugging and maintenance; Reduce the deadweight of support leg device simultaneously,, just become the problem that those skilled in the art need solve to improve the support leg device load-carrying capacity.
Summary of the invention
The purpose of this invention is to provide a kind of support leg device, its structure is comparatively simple, thereby has reduced the complexity of processing technology, and, reduce the degree of difficulty that support leg device is installed and safeguarded, thereby reduced maintenance cost.Another object of the present invention provides a kind of movable type engineering machine that comprises above-mentioned support leg device.
For solving the problems of the technologies described above; The present invention provides a kind of support leg device that is used for movable type engineering machine; Comprise the fixed supporting leg case that is installed on the chassis, telescopically is installed on the movable supporting legs of two-stage at least of said fixed supporting leg case successively, and drives the flexible engine installation of said movable supporting legs; Said movable supporting legs comprises first movable supporting legs and second movable supporting legs, and said first movable supporting legs is installed on said fixed supporting leg case; Said first movable supporting legs is equipped with first gear, and said fixed supporting leg case is equipped with first tooth bar that is meshed with said first gear; Said first movable supporting legs is equipped with second gear, and said second movable supporting legs is equipped with second tooth bar that is meshed with said second gear; Said first gear and said second gear link under the effect of link, so that said first movable supporting legs is identical with respect to said fixed supporting leg case travel direction with said second movable supporting legs.
Preferably, said first gear and said second gear rotate in the same way, and the flank of tooth of said first tooth bar and said second tooth bar is relative.
Preferably, said link is for rotatably being connected in the rotating shaft of said first movable supporting legs, and said first gear and said second gear are installed on the two ends of said rotating shaft.
Preferably, said first tooth bar is identical with said second tooth bar, and said first gear is identical with said second gear.
Preferably, said first gear is installed on said first movable supporting legs through first rotating shaft, and said second gear is installed on said first movable supporting legs through said second rotating shaft; Said first rotating shaft and said second rotating shaft lay respectively at the two ends of said first movable supporting legs; Said link comprises first sprocket wheel that is installed on said first rotating shaft and second sprocket wheel that is installed on said second rotating shaft, and with the chain of said first sprocket wheel and said second sprocket engagement.
Preferably, said first tooth bar is identical with said second tooth bar, and said first gear is identical with said second gear; Said first sprocket wheel is identical with said second sprocket wheel.
Preferably, said engine installation is installed on and appoints between the said movable supporting legs of two-stage.
Preferably, said engine installation is a telescopic oil cylinder.
The present invention also provides a kind of movable type engineering machine, comprises above-mentioned each described support leg device.
Preferably, be specially hoisting crane.
Support leg device provided by the present invention is used for movable type engineering machine, comprises the fixed supporting leg case that is installed on the chassis, telescopically is installed on the movable supporting legs of two-stage at least of said fixed supporting leg case successively, and drives the flexible engine installation of said movable supporting legs; Be installed on first movable supporting legs of said fixed supporting leg case first gear is installed, first tooth bar that is meshed with said first gear is installed on the said fixed supporting leg case; Said first movable supporting legs is equipped with second gear, is installed on second movable supporting legs of said first movable supporting legs second tooth bar that is meshed with said second gear is installed; Said first gear and said second gear link under the effect of link, so that said first movable supporting legs is identical with respect to the sense of motion of said fixed supporting leg case with said second movable supporting legs.
Like this, under the impetus of first movable supporting legs at engine installation, when in the fixed supporting leg case, stretching out, first tooth bar and fixed supporting leg case are fixed, and first gear rotates on above-mentioned first tooth bar in the process of stretching out with first movable supporting legs; Simultaneously; Since under the effect of link, second gear and the interlock of first gear, and then second gear is in the process of stretching out with first movable supporting legs; On above-mentioned second tooth bar, rotate, thereby second movable supporting legs that drives second tooth bar place stretches out in first movable supporting legs; When support leg device was withdrawn, first movable supporting legs to the withdrawal of fixed supporting leg case, drove the withdrawal of above-mentioned second movable supporting legs with identical principle under the drive of engine installation.Support leg device provided by the present invention uses through the two pairs of rack-and-pinions, has realized stretching out and withdrawing of support leg device, and its structure is comparatively simple; Thereby reduced the complexity of processing technology; And, reduced the degree of difficulty that support leg device is installed and safeguarded, thereby reduced maintenance cost.
A kind of preferred embodiment in, above-mentioned first tooth bar is identical with second tooth bar, and first gear is identical with second gear.Like this, when in the fixed supporting leg case, stretching out under the promotion of first movable supporting legs at engine installation, drive first gear and second gear with identical speeds; Because two gears are all identical with two tooth bars; Then the linear distance that in the identical time, turns over of two gears is identical, thereby it is identical to drive two tooth bars outwardly directed straight-line distance in the identical time, therefore; Above-mentioned first movable supporting legs and second movable supporting legs stretch out synchronously, have improved the efficient that supporting leg stretches out and withdraws; And first gear is identical with second gear, first tooth bar is identical with second tooth bar, thereby has reduced the difficulty of processing, assembling, has practiced thrift productive costs.
In another preferred embodiment, above-mentioned first gear is installed on said first movable supporting legs through first rotating shaft, and second gear is installed on said first movable supporting legs through second rotating shaft; First rotating shaft and second rotating shaft lay respectively at the two ends of first movable supporting legs; Link comprises first sprocket wheel that is installed on first rotating shaft and second sprocket wheel that is installed on second rotating shaft, and with the chain of first sprocket wheel and second sprocket engagement.Like this, the rotational power of sprocket wheel chain adjutant first rotating shaft is passed to second rotating shaft, has improved the reliable transmission property of support leg device and the particularity of synchrodrive; And; Reduce the lap of splice of second movable supporting legs and first movable supporting legs, thereby improved the full elongation of support leg device, and then; Under the condition of identical full elongation, reduce the weight of support leg device.
Description of drawings
Fig. 1 is a kind of structural representation of support leg device of representative type multi-stage oil cylinder driving;
Fig. 2 is the exploded view of a kind of specific embodiment of support leg device provided by the present invention;
Fig. 3 is the perspective view of the another kind of specific embodiment of support leg device provided by the present invention;
Fig. 4 is the exploded view of support leg device shown in Figure 3.
The specific embodiment
Core of the present invention provides a kind of support leg device, and its structure is comparatively simple, thereby has reduced the complexity of processing technology, and, reduce the degree of difficulty that support leg device is installed and safeguarded, thereby reduced maintenance cost.Another core of the present invention provides a kind of movable type engineering machine that comprises above-mentioned support leg device.
In order to make those skilled in the art person understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with the accompanying drawing and the specific embodiment.
Please refer to Fig. 2, Fig. 2 is the exploded view of a kind of specific embodiment of support leg device provided by the present invention.
In a kind of specific embodiment; Support leg device provided by the present invention; Be used for movable type engineering machine; Comprise the fixed supporting leg case 1 that is installed on the engineering machinery chassis, telescopically is installed on the movable supporting legs of two-stage at least of this fixed supporting leg case 1 successively, and the engine installation that drives movable supporting legs fore and aft motion at different levels; Be installed on first movable supporting legs 21 of fixed supporting leg case 1 first gear 31 is installed, first tooth bar 41 that is meshed with first gear 31 is installed on the fixed supporting leg case 1; First movable supporting legs 21 is equipped with second gear 32, is installed on second movable supporting legs 22 of first movable supporting legs 21 second tooth bar 42 that is meshed with second gear 32 is installed; First gear 31 and second gear 32 link under the effect of link, so that first movable supporting legs 21 is identical with respect to the sense of motion of said fixed supporting leg case 1 with second movable supporting legs 22.
The above-mentioned movable supporting legs of two-stage at least telescopically successively is installed on fixed supporting leg case 1; Be specially; Be installed on fixed supporting leg case 1, the second movable supporting legs 22 telescopicallies near first movable supporting legs, 21 telescopicallies of fixed supporting leg case 1 and be installed on first movable supporting legs 21, by that analogy; Each saves in the upper class supporting leg (the supporting leg had here both comprised fixed supporting leg case 1, also comprised movable supporting legs at different levels) that the movable supporting legs telescopically is installed on this joint movable supporting legs.
Above-mentioned telescopically is installed to be specially and is respectively saved the movable supporting legs telescopically and be set in the fixed supporting leg case 1, also can realize the installation form of functions of use for other.
The original power of the fore and aft motion of above-mentioned movable supporting legs at different levels provides through the engine installation that is installed on arbitrary joint movable supporting legs.
Above-mentioned first gear 31 and second gear 32 can rotate in the same way, and at this moment, the flank of tooth of first tooth bar 41 and second tooth bar 42 is relative; To guarantee that first movable supporting legs 21 is identical with respect to the sense of motion of fixed supporting leg case 1 with second movable supporting legs 22; Also promptly, when first movable supporting legs 21 stretched out in fixed supporting leg case 1, second movable supporting legs 22 stretched out in first movable supporting legs 21; And when first movable supporting legs, 21 withdrawal fixed supporting leg casees 1, second movable supporting legs, 22 withdrawals, first movable supporting legs 21.
Apparently, above-mentioned first gear 31 also can with second gear, 32 backward rotation, at this moment, first tooth bar 41 is identical with the flank of tooth direction of second tooth bar 42.
It is pointed out that above-mentioned first tooth bar 41 and second tooth bar, 42 flank of tooth are relatively installed specifically is meant, direction as shown in Figure 2, also promptly the flank of tooth of first tooth bar 41 upwards, the flank of tooth of second tooth bar 42 is downward; And in real work, owing to being axially set on the vertical direction of support leg device, the flank of tooth direction of then above-mentioned first tooth bar 41 and second tooth bar 42 correspondingly changes.
Above-mentioned link can be for rotatably being connected in the rotating shaft of first movable supporting legs 21, and first gear 31 and second gear 32 are installed on the two ends of rotating shaft, and the coaxial rotation with through first gear 31 and second gear 32 realizes the interlock of two gears.
Above-mentioned first tooth bar 41 can be identical with second tooth bar 42, and first gear 31 also can be identical with second gear 32 simultaneously, then under the condition that satisfies the support leg device synchronization telescope, reduced processing and manufacturing and design-calculated difficulty.
Above-mentioned first tooth bar 41 and second tooth bar, 42 identical being meant, each parameter such as the number of teeth of two tooth bars, the facewidth is all identical; Correspondingly, above-mentioned first gear 31 and second gear, 32 identical being meant, each parameter such as the number of teeth of two gears, reference diameter is all identical.
Above-mentioned first gear 31 and second gear 32 also can be incomplete same; As long as guarantee that above-mentioned first gear 31 equates with the reference diameter of second gear 32; And; Transmitting ratio between first gear 31 and first tooth bar 41 equals the transmitting ratio between second gear 32 and second tooth bar 42, then can realize the synchronization telescope of first movable supporting legs 21 and second movable supporting legs 22.In the telescopic process of support leg device; First gear 31 is identical with the displacement of the lines of second gear 32 on flexible direction; And the reference diameter of two gears equates, then in the identical time, the radian that first gear 31 and second gear 32 turn on first tooth bar 41 and second tooth bar 42 respectively is identical; And the transmitting ratio between above-mentioned first gear 31 and first tooth bar 41 and second gear 32 equate with transmitting ratio between second tooth bar 42; Then first tooth bar 41 is identical with the displacement of the lines that second tooth bar 42 stretched in the identical time, and therefore, first movable supporting legs 21 stretches out with identical speed with second movable supporting legs 22 or withdraws; Realize the synchronization telescope of support leg device, thereby further improved the in-use performance of support leg device.
It is to be noted; Support leg device provided by the present invention is not limited to only comprise the form of first movable supporting legs 21 and second movable supporting legs 22; Under the situation of usage condition and working condition permission, can also comprise more more piece movable supporting legs, each saves between the movable supporting legs also can pass through the rack-and-gear auxiliary driving; Also promptly, can the type of drive between above-mentioned first movable supporting legs 21 and second movable supporting legs 22 be saved between movable supporting legs as module application in each.
Under the impetus of first movable supporting legs at engine installation, when in the fixed supporting leg case, stretching out, first tooth bar and fixed supporting leg case are fixed, and first gear rotates on above-mentioned first tooth bar in the process of stretching out with first movable supporting legs; Simultaneously; Since under the effect of link, second gear and the interlock of first gear, and then second gear is in the process of stretching out with first movable supporting legs; On above-mentioned second tooth bar, rotate, thereby second movable supporting legs that drives second tooth bar place stretches out in first movable supporting legs; When support leg device was withdrawn, first movable supporting legs to the withdrawal of fixed supporting leg case, drove the withdrawal of above-mentioned second movable supporting legs with identical principle under the drive of engine installation.Support leg device provided by the present invention uses through the two pairs of rack-and-pinions, has realized stretching out and withdrawing of support leg device, and its structure is comparatively simple; Thereby reduced the complexity of processing technology; And, reduced the degree of difficulty that support leg device is installed and safeguarded, thereby reduced maintenance cost.
Can also further improve support leg device provided by the present invention.
Please refer to Fig. 3 and Fig. 4, Fig. 3 is the perspective view of the another kind of specific embodiment of support leg device provided by the present invention; Fig. 4 is the exploded view of support leg device shown in Figure 3.
Above-mentioned link can be for rotatably being connected in the rotating shaft of first movable supporting legs 21, and first gear 31 and second gear 32 are installed on the two ends of rotating shaft.Comparatively simple, easy to process through rotating shaft as the form structure of link; But this kind version makes to win must have enough laps of splice between the movable supporting legs 21 and second movable supporting legs 22, thereby makes the full elongation of support leg device be affected.
In the another kind of specific embodiment, above-mentioned first gear 31 is installed on first movable supporting legs, 21, the second gears 32 through first rotating shaft 71 and is installed on first movable supporting legs 21 through second rotating shaft 72; First rotating shaft 71 and second rotating shaft 72 lay respectively at the two ends of first movable supporting legs 21; Above-mentioned link comprises first sprocket wheel 511 that is installed on first rotating shaft 71 and second sprocket wheel 512 that is installed on second rotating shaft 72, and with first sprocket wheel 511 and second sprocket wheel, 512 ingear chains 52.
Like this; The rotational power of sprocket wheel chain adjutant first rotating shaft 71 is passed to second rotating shaft 72, makes second gear 32 can be positioned at the extreme end of first gear 31, thereby has reduced the lap of splice of second movable supporting legs 22 and first movable supporting legs 21; Thereby improved the full elongation of support leg device; And, under the condition of identical full elongation, reduce the weight of support leg device.Simultaneously, sprocket wheel chain reliable transmission property is higher, and service life is longer, comparatively is applicable in the construction machinery and equipment.
Above-mentioned first tooth bar 41 is identical with second tooth bar 42, and first gear 31 is identical with second gear 32; First sprocket wheel 511 is also identical with second sprocket wheel 512, like this, when guaranteeing the precise synchronization transmission, has reduced support leg device design-calculated difficulty.
Apparently, it is secondary that above-mentioned connecting device also is not limited to the sprocket wheel chain, also can realize uniform movement for other, and improve the parts of the full elongation of support leg device, for example the mode of belt wheel and belt transmission.
When support leg device only has first movable supporting legs 21 and second movable supporting legs 22; Above-mentioned engine installation can be installed between first movable supporting legs 21 and the fixed supporting leg case 1; Because first movable supporting legs 21 is positioned at the midway location of support leg device; Original power is put on the movable supporting legs of intergrade, be convenient to the stable delivery of power; Certainly, engine installation also can be installed between the wantonly two joint movable supporting legs.When support leg device has the more piece movable supporting legs, also can engine installation be installed on the adjacent two joint movable supporting legs that are positioned at midway location, can certainly be installed between the wantonly two joint movable supporting legs.
Above-mentioned engine installation can be telescopic oil cylinder 6, and an end of this telescopic oil cylinder 6 is installed on arbitrary joint supporting leg, and its other end is installed on the upper class supporting leg of this joint supporting leg, through the stretching out and withdraw of telescopic oil cylinder 6, to drive stretching out and withdrawing of movable supporting legs.
Except above-mentioned support leg device, the present invention also provides a kind of movable type engineering machine that comprises above-mentioned support leg device.
Particularly, above-mentioned movable type engineering machine can be hoisting crane, and the structure of other each several parts of this hoisting crane please refer to prior art, repeats no more at this.
Particularly, above-mentioned movable type engineering machine can also be pump truck, and the structure of other each several parts of this pump truck also please refer to prior art, repeats no more at this.
More than a kind of movable type engineering machine provided by the present invention and support leg device thereof have been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. support leg device that is used for movable type engineering machine comprises the fixed supporting leg case (1) that is installed on the chassis, telescopically is installed on the movable supporting legs of two-stage at least of said fixed supporting leg case (1) successively, and drives the flexible engine installation of said movable supporting legs; It is characterized in that,
Said movable supporting legs comprises first movable supporting legs (21) and second movable supporting legs (22), and said first movable supporting legs (21) is installed on said fixed supporting leg case (1); Said first movable supporting legs (21) is equipped with first gear (31), and said fixed supporting leg case (1) is equipped with first tooth bar (41) that is meshed with said first gear (31);
Said first movable supporting legs (21) is equipped with second gear (32), and said second movable supporting legs (22) is equipped with second tooth bar (42) that is meshed with said second gear (32);
Said first gear (31) links under the effect of link with said second gear (32), so that said first movable supporting legs (21) is identical with respect to said fixed supporting leg case (1) travel direction with said second movable supporting legs (22).
2. the support leg device that is used for movable type engineering machine according to claim 1 is characterized in that, said first gear (31) rotates with said second gear (32) in the same way, and said first tooth bar (41) is relative with the flank of tooth of said second tooth bar (42).
3. the support leg device that is used for movable type engineering machine according to claim 2; It is characterized in that; Said link is for rotatably being connected in the rotating shaft of said first movable supporting legs (21), and said first gear (31) and said second gear (32) are installed on the two ends of said rotating shaft.
4. the support leg device that is used for movable type engineering machine according to claim 3 is characterized in that, said first tooth bar (41) is identical with said second tooth bar (42), and said first gear (31) is identical with said second gear (32).
5. the support leg device that is used for movable type engineering machine according to claim 2 is characterized in that,
Said first gear (31) is installed on said first movable supporting legs (21) through first rotating shaft (71), and said second gear (32) is installed on said first movable supporting legs (21) through said second rotating shaft (72);
Said first rotating shaft (71) and said second rotating shaft (72) lay respectively at the two ends of said first movable supporting legs (21);
Said link comprises first sprocket wheel (511) that is installed on said first rotating shaft (71) and second sprocket wheel (512) that is installed on said second rotating shaft (72), and with said first sprocket wheel (511) and said second sprocket wheel (512) ingear chain (52).
6. the support leg device that is used for movable type engineering machine according to claim 5 is characterized in that, said first tooth bar (41) is identical with said second tooth bar (42), and said first gear (31) is identical with said second gear (32); Said first sprocket wheel (511) is identical with said second sprocket wheel (512).
7. the support leg device that is used for movable type engineering machine according to claim 6 is characterized in that, said engine installation is installed on appoints between the said movable supporting legs of two-stage.
8. the support leg device that is used for movable type engineering machine according to claim 7 is characterized in that, said engine installation is telescopic oil cylinder (6).
9. a movable type engineering machine is characterized in that, comprises each described support leg device of claim 1 to 8.
10. movable type engineering machine according to claim 9 is characterized in that, is specially hoisting crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102221652A CN101698407B (en) | 2009-11-18 | 2009-11-18 | Movable type engineering machine and support leg device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102221652A CN101698407B (en) | 2009-11-18 | 2009-11-18 | Movable type engineering machine and support leg device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101698407A CN101698407A (en) | 2010-04-28 |
| CN101698407B true CN101698407B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102221652A Expired - Fee Related CN101698407B (en) | 2009-11-18 | 2009-11-18 | Movable type engineering machine and support leg device thereof |
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| CN (1) | CN101698407B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828629B (en) * | 2012-09-04 | 2015-07-29 | 唐山轨道客车有限责任公司 | working platform device |
| CN103407433B (en) * | 2013-07-23 | 2015-08-12 | 北汽福田汽车股份有限公司 | The mounting structure of multi-stage expansion supporting leg and construction machinery and equipment |
| CN103753558B (en) * | 2013-12-23 | 2016-02-03 | 哈尔滨工业大学 | There is the small-sized search and rescue robot throwing in function |
| CN106695874A (en) * | 2015-07-15 | 2017-05-24 | 张成芳 | Reversing hydraulic cylinder driving and three-section sleeve linkage type telescopic manipulator |
| CN105480882B (en) * | 2015-12-30 | 2017-04-05 | 中联重科股份有限公司 | Leg folding-unfolding mechanism and engineering machinery |
| CN112141757B (en) * | 2020-10-19 | 2022-04-05 | 山东金号家纺集团有限公司 | Extensible loading equipment for boxing towels |
| CN112828791B (en) * | 2021-01-27 | 2022-09-20 | 江苏绸缪建设工程有限公司 | Mounting fixture for construction |
| CN113200467B (en) * | 2021-05-28 | 2022-11-11 | 张存生 | Small-size hoisting accessory |
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|---|---|---|---|---|
| DE19505703A1 (en) * | 1994-12-24 | 1996-06-27 | Josef Kemper | Articulated leg for base of crane or elevating plant |
| CN2474393Y (en) * | 2001-04-29 | 2002-01-30 | 赵伟民 | Single hydrocylinder driving radiation type multiple supporting leg retractable mechanism |
| US6623035B1 (en) * | 1999-05-05 | 2003-09-23 | Actuant Corporation | Landing gear |
| CN201092737Y (en) * | 2007-09-04 | 2008-07-30 | 三一重工股份有限公司 | Telescopic component and supporting leg for engineering machinery as well as concrete pump vehicle containing said supporting leg |
| CN201254166Y (en) * | 2008-08-11 | 2009-06-10 | 徐州重型机械有限公司 | Expansion outrigger and expansion outrigger assembly and concrete pump truck with the same |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19505703A1 (en) * | 1994-12-24 | 1996-06-27 | Josef Kemper | Articulated leg for base of crane or elevating plant |
| US6623035B1 (en) * | 1999-05-05 | 2003-09-23 | Actuant Corporation | Landing gear |
| CN2474393Y (en) * | 2001-04-29 | 2002-01-30 | 赵伟民 | Single hydrocylinder driving radiation type multiple supporting leg retractable mechanism |
| CN201092737Y (en) * | 2007-09-04 | 2008-07-30 | 三一重工股份有限公司 | Telescopic component and supporting leg for engineering machinery as well as concrete pump vehicle containing said supporting leg |
| CN201254166Y (en) * | 2008-08-11 | 2009-06-10 | 徐州重型机械有限公司 | Expansion outrigger and expansion outrigger assembly and concrete pump truck with the same |
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| Publication number | Publication date |
|---|---|
| CN101698407A (en) | 2010-04-28 |
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