CN203543912U - Telescopic supporting leg, telescopic supporting leg assembly provided with telescopic supporting leg, and engineering machine - Google Patents
Telescopic supporting leg, telescopic supporting leg assembly provided with telescopic supporting leg, and engineering machine Download PDFInfo
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- CN203543912U CN203543912U CN201320668457.0U CN201320668457U CN203543912U CN 203543912 U CN203543912 U CN 203543912U CN 201320668457 U CN201320668457 U CN 201320668457U CN 203543912 U CN203543912 U CN 203543912U
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- supporting leg
- intermediate support
- cover plate
- upper cover
- fixed supporting
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Abstract
The utility model relates to the technical field of engineering machines, and discloses a telescopic supporting leg, a telescopic supporting leg assembly and an engineering machine. The telescopic supporting leg comprises a fixed supporting leg, at least one middle supporting leg and a tail end supporting leg which are arranged in a nested mode; in the abutting-connecting portion of the fixed supporting leg, a reinforcing board is fixed to an upper covering board, the upper covering board is located between two webs, and the parts, higher than the upper covering board, of the two webs are fixedly connected with the reinforcing board; the abutting-connecting portion of the middle supporting leg is internally provided with a reinforcing board fixedly connected with an upper covering board and webs of the middle supporting leg, a tank board is arranged on the upper covering board, and the tank board, the upper covering board, the two webs and the reinforcing board are connected to be of a hollow tank structure. The structural intensity of the telescopic supporting leg is high, and then the service life of the telescopic supporting leg is prolonged.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly a kind of telescopic outrigger, there is telescopic outrigger assembly and the construction machinery and equipment of this telescopic outrigger.
Background technology
In technical field of engineering machinery, particularly in concrete pump truck, stability during for the operation of assurance concrete pump truck, needs a plurality of telescopic outrigger assemblies to support during concrete pump truck operation, telescopic outrigger is the critical structures that determines telescopic outrigger assembly extension.
In recent years, long arm rack concrete pump truck has occupied the leading position in concrete pump truck market gradually, stability when guaranteeing long arm rack concrete pump truck operation, in concrete pump truck, the overhanging length of telescopic outrigger assembly is more and more longer, simultaneously due to the requirement of the space layout aspect of concrete pump chassis, sometimes need to use three grades, even more multistage telescopic outrigger and could meet the designing requirement of telescopic outrigger assembly extension.
In prior art, the three grades of telescopic outriggers of take are example, three grades of telescopic outriggers comprise a joint fixed supporting leg and the two joint movable supporting legs that are nested and arrange, two joint movable supporting legs comprise a joint end supporting leg and a joint intermediate support leg, fixed supporting leg has clinch, and intermediate support leg also has clinch, and joint movable supporting legs is overhanging while putting in place when two, intermediate support leg coordinates with the clinch overlap joint of fixed supporting leg, and end supporting leg coordinates with the clinch overlap joint of intermediate support leg.For guarantee telescopic outrigger assembly at the intermediate support leg of its telescopic outrigger and end supporting leg structural strength when overhanging, except end supporting leg, the clinch of fixed supporting leg and the clinch of intermediate support leg all adopt the plank preparation that sheet metal thickness is larger, to improve the structural strength of the clinch of fixed supporting leg and the clinch of intermediate support leg, and then improving the intermediate support leg of telescopic outrigger assembly in its telescopic outrigger and the structural strength of end supporting leg when overhanging, the project organization of this telescopic outrigger is fairly simple.But, along with the jib of concrete pump truck is done longer and longer, concrete pump truck is more and more higher to the load bearing requirements of telescopic outrigger in telescopic outrigger assembly, and the structure of above-mentioned telescopic outrigger is difficult to meet the requirement of concrete pump truck to the structural strength of telescopic outrigger assembly and life-span.
Utility model content
The utility model provides a kind of telescopic outrigger, has had telescopic outrigger assembly and the construction machinery and equipment of this telescopic outrigger, this telescopic outrigger therebetween supporting leg and end supporting leg is overhanging while putting in place structural strength higher, service life is longer.
For achieving the above object, the utility model provides following technical scheme:
A telescopic outrigger, comprising the is nested joint fixed supporting leg arranging, at least one joint intermediate support leg and a joint end supporting leg, described fixed supporting leg has a clinch, and each saves described intermediate support leg and have a clinch, wherein:
In the clinch that described fixed supporting leg has, on the upper cover plate of fixed supporting leg, be fixed with brace panel, the upper cover plate of described fixed supporting leg is between two webs of fixed supporting leg, two web upper ends of fixed supporting leg all exceed the upper cover plate of fixed supporting leg, and the part that two webs of fixed supporting leg exceed described upper cover plate is all fixedly connected with brace panel;
In the clinch that described in each, intermediate support leg has, the upper cover plate of intermediate support leg is between two webs, two webs of intermediate support leg all have the protuberance that exceeds upper cover plate, on intermediate support leg, there is the brace panel being fixedly connected with its upper cover plate and web, the top of the upper cover plate of intermediate support leg has a boxboard, in four sides of boxboard, in a pair of two relative sides, a side is fixedly connected with the upper cover plate of intermediate support leg, another side is connected with the partial fixing that intermediate support leg brace panel exceeds upper cover plate, another is fixedly connected with the protuberance of two webs respectively two relative sides, boxboard and upper cover plate, two webs, brace panel is connected to form the box-structure of a hollow.
In the telescopic outrigger that the utility model provides, in the clinch of fixed supporting leg, the upper cover plate of fixed supporting leg is between two webs, and the upper end of two webs all exceeds upper cover plate, and the part that two webs exceed upper cover plate is all fixedly connected with the brace panel that is positioned at upper cover plate top, like this, in the clinch of fixed supporting leg, the structural strength at upper cover plate place not only can be utilized the timber intensity of upper cover plate and brace panel, can also utilize the timber intensity of two webs of fixed supporting leg by actv., and then improve the structural strength of the clinch of fixed supporting leg.
Simultaneously, in the clinch that each intermediate support leg has, intermediate support leg has the brace panel being fixedly connected with its upper cover plate, and boxboard and two webs of upper cover plate top, upper cover plate, brace panel forms the box-structure of hollow between the part above upper cover plate, boxboard and two webs, the box-structure that upper cover plate and brace panel form has higher structural strength, therefore, in the clinch that intermediate support leg has, the structural strength at upper cover plate place not only can be utilized web, brace panel, the timber intensity of upper cover plate, can also utilize the timber intensity of boxboard, and boxboard and upper cover plate, the structural strength of the box-structure that brace panel forms, and then improved the structural strength of the clinch of intermediate support leg.
So the structural strength of the above-mentioned telescopic outrigger that the utility model provides is higher, and then also improved the service life of telescopic outrigger.
On the basis of technique scheme, in order further to improve the structural strength of the clinch of fixed supporting leg, preferably, in the clinch that described fixed supporting leg has, the upper cover plate top of fixed supporting leg also has a boxboard, in four sides of boxboard, in a pair of two relative sides, a side is fixedly connected with the upper cover plate of fixed supporting leg, another side is fixedly connected with the brace panel of the upper cover plate top of fixed supporting leg, and another is fixedly connected with two webs of fixed supporting leg respectively relative side; Between the upper cover plate of boxboard and fixed supporting leg, two webs and brace panel, form the box-structure of a hollow.
In the clinch of fixed supporting leg, also adopt boxboard and its upper cover plate, two webs and brace panel to form a kind of box-structure of sky, can further improve the structural strength of fixed supporting leg clinch.
Preferably, the cross-sectional plane of the box-structure hollow space in the clinch of described intermediate support leg is rectangle, trapezoidal or triangle.
Preferably, in the clinch of described intermediate support leg, the brace panel that described intermediate support leg has has fluting, and described brace panel is ridden the end of upper cover plate and two webs of being located at described intermediate support leg by described fluting.In said structure, the brace panel that the clinch of intermediate support leg has is ridden and is located on two webs of intermediate support leg and box-shaped that upper cover plate forms, can make full use of the timber intensity of clinch median ventral plate and the timber intensity of brace panel of intermediate support leg, in actual production, can greatly improve the intensity of intermediate support leg clinch.
Preferably, in the clinch of described intermediate support leg, the outside of two webs all has a reinforcement plate, and the web that each piece reinforcement plate is corresponding with it is fixedly connected with, and is fixedly connected with the brace panel of intermediate support leg clinch.In the clinch of intermediate support leg, the reinforcement plate of the arranged outside of two webs can further be strengthened the structural strength of intermediate support leg clinch.
Preferably, also have the support roller of two webs that are installed in fixed supporting leg in the clinch of described fixed supporting leg, the pivot axis of described support roller is vertical with the flexible direction of described intermediate support leg.The support roller that fixed supporting leg clinch has can by and the intermediate support leg of fixed supporting leg overlap joint when flexible with fixed supporting leg clinch between cliding friction be converted to friction of rolling, the catching phenomenon when alleviating intermediate support leg and stretching and between fixed supporting leg.
Preferably, each saves the support roller also in the clinch of described intermediate support leg with two webs that are installed in intermediate support leg, and the pivot axis of described support roller is vertical with the flexible direction of end supporting leg.The cliding friction when support roller that intermediate support leg has can be by end landing leg stretching and between intermediate support leg clinch is converted to friction of rolling, alleviates the catching phenomenon between end landing leg stretching formula and intermediate support leg.Certainly, when telescopic outrigger has two joints or the above intermediate support leg of two joints, support roller can also be converted to friction of rolling by the cliding friction when flexible between two adjacent intermediate support legs, the catching phenomenon when reducing two adjacent joint intermediate support legs and stretching.
The utility model also provides a kind of telescopic outrigger assembly, and any telescopic outrigger providing in technique scheme is provided.
The utility model also provides a kind of construction machinery and equipment, and the telescopic outrigger assembly providing in technique scheme is provided.
Preferably, described construction machinery and equipment is concrete pump truck.
Accompanying drawing explanation
A kind of structural representation of the telescopic outrigger that Fig. 1 provides for the utility model embodiment;
A kind of structural representation of the clinch of fixed supporting leg in the telescopic outrigger that Fig. 2 provides for the utility model embodiment;
A kind of structural representation of the clinch of intermediate support leg in the telescopic outrigger that Fig. 3 provides for the utility model embodiment;
Fig. 4 is the mounting structure schematic diagram between brace panel and its upper cover plate and web in the intermediate support leg shown in Fig. 3.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based 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 patent protection.
Please refer to Fig. 1, Fig. 2 and Fig. 3, wherein, a kind of structural representation of the telescopic outrigger that Fig. 1 provides for the utility model embodiment; A kind of structural representation of the clinch of fixed supporting leg in the telescopic outrigger that Fig. 2 provides for the utility model embodiment; A kind of structural representation of the clinch of intermediate support leg in the telescopic outrigger that Fig. 3 provides for the utility model embodiment.
The utility model provides a kind of telescopic outrigger, a kind of telescopic outrigger assembly and a kind of construction machinery and equipment with above-mentioned telescopic outrigger assembly with above-mentioned telescopic outrigger, and above-mentioned construction machinery and equipment is preferably concrete pump truck.In concrete pump truck operation process, for the stability that guarantees that concrete pump truck supports, the movable supporting legs of the telescopic outrigger in the telescopic outrigger assembly that it has stretches out, overhanging being supported on ground of vertical oil cylinder of the end supporting leg of movable supporting legs, and then the stability while improving concrete pump truck operation.For telescopic outrigger assembly, vertically oil cylinder to the application force of the end of end supporting leg upwards, and end supporting leg is overhanging while putting in place, the clinch overlap joint of its other end and intermediate support leg, according to lever principle, stressed larger with the upper cover plate place of the clinch of the intermediate support leg of above-mentioned end supporting leg overlap joint, higher to the requirement of strength at the upper cover plate place of intermediate support leg clinch; In like manner, for three grades and three grades of above telescopic outriggers, the structural strength at each joint intermediate support leg clinch upper cover plate place requires all very high, and requires also very high to the structural strength at the upper cover plate place of fixed supporting leg clinch.
As shown in Figure 1, the telescopic outrigger that the utility model embodiment provides comprises the joint fixed supporting leg 10 arranging that is nested, at least one joint intermediate support leg 20 and a joint end supporting leg 30, fixed supporting leg 10 has a clinch, and each joint intermediate support leg 20 has a clinch, wherein, the telescopic outrigger of three grades of take is example, and the telescopic outrigger of three grades comprises a joint fixed supporting leg 10, a joint intermediate support leg 20 and a joint end supporting leg 30:
As depicted in figs. 1 and 2, in the clinch that fixed supporting leg 10 has, on the upper cover plate 14 of fixed supporting leg 10, be fixed with brace panel 11, the upper cover plate 14 of fixed supporting leg 10 is between two webs 13 of fixed supporting leg 10, two web 13 upper ends of fixed supporting leg 10 all exceed the upper cover plate 12 of fixed supporting leg 10, and the part that two webs 13 of fixed supporting leg 10 exceed upper cover plate 14 is all fixedly connected with brace panel 11, in the clinch of fixed supporting leg 10, two webs 13 of fixed supporting leg 10 are higher than the part and a kind of profile structure of brace panel 11 common formation of upper cover plate 14, intermediate support leg 20 is when the clinch overlap joint with fixed supporting leg 10, the structural strength at upper cover plate 14 places of fixed supporting leg 10 clinchs not only can be utilized the timber intensity of upper cover plate 14 and brace panel 11, the timber intensity that can also actv. utilizes two webs 13 of fixed supporting leg 10, and the intensity of the profile structure forming between web 13 and brace panel 11, and then improved the structural strength of the clinch of fixed supporting leg 10.
Simultaneously, as shown in figures 1 and 3, in the clinch that intermediate support leg 20 has, the upper cover plate 24 of intermediate support leg 20 is between two webs 23, two webs 23 of intermediate support leg 20 all have the protuberance 231 that exceeds upper cover plate 24, on intermediate support leg 20, there is the brace panel 21 being fixedly connected with its upper cover plate 24 and web 23, the top of the upper cover plate 24 of intermediate support leg 20 has a boxboard 22, in four sides of boxboard 22, in a pair of two relative sides, a side is fixedly connected with the upper cover plate 24 of intermediate support leg 20, another side is connected with the partial fixing that intermediate support leg 20 brace panels 21 exceed upper cover plate 24, another is fixedly connected with the protuberance 231 of two webs 23 respectively two relative sides, boxboard 22 and upper cover plate 24, two webs 23, brace panel 21 is connected to form the box-structure of a hollow, as shown in Figure 2.The box-structure that the protuberance 231 of boxboard 22 and two webs 23, upper cover plate 24 and brace panel 21 are connected to form has higher structural strength, therefore, in the clinch that intermediate support leg 20 has, the structural strength at upper cover plate 24 places not only can be utilized the timber intensity of two webs 23, brace panel 21, upper cover plate 24, can also utilize the structural strength of the box-structure of the timber intensity of boxboard 22 and the protuberance 231 of boxboard 22 and two webs 23, upper cover plate 24, brace panel 21 formation, and then improve the structural strength of the clinch of intermediate support leg.
Therefore, in the telescopic outrigger of said structure, the structural strength at upper cover plate 14 places of the clinch of fixed supporting leg 10 not only can be utilized the timber intensity of upper cover plate 14 and brace panel 11, the timber intensity that can also actv. utilizes two webs 13 of fixed supporting leg 10, and the intensity of the profile structure forming between web 13 and brace panel 11, and then improved the structural strength of the clinch of fixed supporting leg 10; In the clinch that intermediate support leg 20 has, the structural strength at upper cover plate 24 places not only can be utilized the timber intensity of two webs 23, brace panel 21, upper cover plate 24, can also utilize the structural strength of the box-structure of the timber intensity of boxboard 22 and the protuberance 231 of boxboard 22 and two webs 23, upper cover plate 24, brace panel 21 formation; And then, above-mentioned telescopic outrigger at each intermediate support leg 20 and the structural strength that end supporting leg 30 is overhanging while putting in place higher.
So the structural strength of the above-mentioned telescopic outrigger that the utility model provides is higher, and then also improved the service life of telescopic outrigger.
Certainly, as depicted in figs. 1 and 2, on the basis of above-mentioned embodiment, in the telescopic outrigger that the present embodiment provides, in order further to improve the structural strength of the clinch of fixed supporting leg 10, preferably, in the clinch that fixed supporting leg 10 has, upper cover plate 14 tops of fixed supporting leg 10 also have a boxboard 12, boxboard 12 has four sides, wherein in a pair of two relative sides, a side is fixedly connected with the upper cover plate 14 of fixed supporting leg 10, another side is fixedly connected with the brace panel 11 of upper cover plate 14 tops of fixed supporting leg 10, another of boxboard 12 is fixedly connected with two webs 13 of fixed supporting leg 10 respectively relative side, between the upper cover plate 14 of boxboard 12 and fixed supporting leg 10, two webs 13 and brace panel 11, form the box-structure of a hollow.
Therefore, when the clinch of fixed supporting leg has above-mentioned boxboard 12, the structural strength at the upper cover plate place of clinch not only can be utilized the timber intensity of upper cover plate 14 and brace panel 11, the timber intensity of two webs 13 of fixed supporting leg 10, can also utilize the timber intensity of boxboard 12 own, and the upper cover plate 14 of boxboard 12 and fixed supporting leg 10, the structural strength of the box-structure forming between two webs 13 and brace panel 11 is larger compared with the structural strength of the similar C shaped steel forming between two webs 13 and brace panel 11, can further improve the structural strength of the clinch of fixed supporting leg 10.
Concrete, the cross-sectional plane of the hollow space of the box-structure that intermediate support leg 20 clinchs have can be the shapes such as rectangle, trapezoidal or triangle.
The cross-sectional plane of the hollow space of the box-structure that certainly, fixed supporting leg 10 clinchs have can be also the shapes such as rectangle, trapezoidal or triangle.
On the basis of above-mentioned embodiment, in a kind of preferred implementation, in the clinch of intermediate support leg 20, in order to utilize better the timber intensity of the web 23 of intermediate support leg 20, brace panel 21 can be ridden and is located on the web 23 of intermediate support leg 20 clinchs and the box-shaped of upper cover plate 24 formation, concrete, as shown in Figure 4, the brace panel 21 that intermediate support leg 20 has has fluting 212, and brace panel 21 is ridden the end of upper cover plate 24 and two webs 23 of being located at intermediate support leg 20 by described fluting 212.In said structure, the brace panel 21 that the clinch of intermediate support leg 20 has is ridden and is located on two webs 23 of intermediate support leg 20 and box-shaped that upper cover plate 24 forms, can make full use of the timber intensity of clinch median ventral plate 23 and the timber intensity of brace panel 21 of intermediate support leg 20, in actual production, can greatly improve the structural strength of intermediate support leg clinch.
Please refer to Fig. 1, preferably, in the clinch of intermediate support leg, the outside of two webs 23 all has a reinforcement plate 211, and the web 23 that each piece reinforcement plate 211 is corresponding with it is fixedly connected with, and is fixedly connected with the brace panel 21 of intermediate support leg clinch.In the clinch of intermediate support leg, the reinforcement plate 211 of the arranged outside of two webs 23 can further be strengthened the structural strength of intermediate support leg clinch.
Please continue to refer to Fig. 1, in the telescopic outrigger that the present embodiment provides, in the clinch of fixed supporting leg 10, also there is the support roller 15 of two webs 13 that are installed in fixed supporting leg 10, the pivot axis of support roller 15 is vertical with the flexible direction of intermediate support leg 20.
Certainly, also can have the support roller 25 of two webs 23 that are installed in intermediate support leg 20 in the clinch of intermediate support leg 20, the pivot axis of support roller 25 is vertical with the flexible direction of end supporting leg 30.
The support roller 15 that fixed supporting leg 10 clinchs have can by and the intermediate support leg 20 of fixed supporting leg 10 overlap joint when flexible with fixed supporting leg 10 clinchs between cliding friction be converted to friction of rolling, the catching phenomenon when alleviating intermediate support leg 20 and stretching and between fixed supporting leg 10.
In like manner, the cliding friction when support roller 25 that intermediate support leg 20 has can be flexible by end supporting leg 30 and between intermediate support leg 20 clinchs is converted to friction of rolling, alleviates the catching phenomenon between the telescopic and intermediate support leg 20 of end supporting leg 30.When telescopic outrigger that the present embodiment provides has two joints or the above intermediate support leg 20 of two joints, support roller 25 can also be converted to friction of rolling by the cliding friction when flexible between two adjacent intermediate support legs 20, the catching phenomenon when reducing telescopic outrigger and stretching.
The utility model embodiment also provides a kind of telescopic outrigger assembly, and any telescopic outrigger providing in the respective embodiments described above is provided.The structural strength of this telescopic outrigger assembly is higher.
The utility model also provides a kind of construction machinery and equipment, and the telescopic outrigger assembly providing in above-mentioned embodiment is provided.
Preferably, construction machinery and equipment is concrete pump truck.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (10)
1. a telescopic outrigger, comprising the is nested joint fixed supporting leg arranging, at least one joint intermediate support leg and a joint end supporting leg, described fixed supporting leg has a clinch, and each saves described intermediate support leg and have a clinch, it is characterized in that, wherein:
In the clinch that described fixed supporting leg has, on the upper cover plate of fixed supporting leg, be fixed with brace panel, the upper cover plate of described fixed supporting leg is between two webs of fixed supporting leg, two web upper ends of fixed supporting leg all exceed the upper cover plate of fixed supporting leg, and the part that two webs of fixed supporting leg exceed described upper cover plate is all fixedly connected with brace panel;
In the clinch that described in each, intermediate support leg has, the upper cover plate of intermediate support leg is between two webs, two webs of intermediate support leg all have the protuberance that exceeds upper cover plate, on intermediate support leg, there is the brace panel being fixedly connected with its upper cover plate and web, the top of the upper cover plate of intermediate support leg has a boxboard, in four sides of boxboard, in a pair of two relative sides, a side is fixedly connected with the upper cover plate of intermediate support leg, another side is connected with the partial fixing that intermediate support leg brace panel exceeds upper cover plate, another is fixedly connected with the protuberance of two webs respectively two relative sides, boxboard and upper cover plate, two webs, brace panel is connected to form the box-structure of a hollow.
2. telescopic outrigger according to claim 1, it is characterized in that, in the clinch that described fixed supporting leg has, the upper cover plate top of fixed supporting leg also has a boxboard, in four sides of boxboard, in a pair of two relative sides, a side is fixedly connected with the upper cover plate of fixed supporting leg, another side is fixedly connected with the brace panel of the upper cover plate top of fixed supporting leg, and another is fixedly connected with two webs of fixed supporting leg respectively relative side; Between the upper cover plate of boxboard and fixed supporting leg, two webs and brace panel, form the box-structure of a hollow.
3. telescopic outrigger according to claim 1, is characterized in that, the cross-sectional plane of the box-structure hollow space in the clinch of described intermediate support leg is rectangle, trapezoidal or triangle.
4. telescopic outrigger according to claim 1, it is characterized in that, in the clinch of described intermediate support leg, the brace panel that described intermediate support leg has has fluting, and described brace panel is ridden the end of upper cover plate and two webs of being located at described intermediate support leg by described fluting.
5. telescopic outrigger according to claim 4, it is characterized in that, in the clinch of described intermediate support leg, the outside of two webs all has a reinforcement plate, and the web that each piece reinforcement plate is corresponding with it is fixedly connected with, and is fixedly connected with the brace panel of intermediate support leg clinch.
6. according to the telescopic outrigger described in claim 1～5 any one, it is characterized in that in the clinch of described fixed supporting leg, also having the support roller of two webs that are installed in fixed supporting leg, the pivot axis of described support roller is vertical with the flexible direction of described intermediate support leg.
7. according to the telescopic outrigger described in claim 1～5 any one, it is characterized in that, each saves the support roller also in the clinch of described intermediate support leg with two webs that are installed in intermediate support leg, and the pivot axis of described support roller is vertical with the flexible direction of end supporting leg.
8. a telescopic outrigger assembly, is characterized in that, comprises the telescopic outrigger as described in claim 1～7 any one.
9. a construction machinery and equipment, is characterized in that, comprises telescopic outrigger assembly as claimed in claim 8.
10. construction machinery and equipment according to claim 9, is characterized in that, described construction machinery and equipment is concrete pump truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320668457.0U CN203543912U (en) | 2013-10-28 | 2013-10-28 | Telescopic supporting leg, telescopic supporting leg assembly provided with telescopic supporting leg, and engineering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320668457.0U CN203543912U (en) | 2013-10-28 | 2013-10-28 | Telescopic supporting leg, telescopic supporting leg assembly provided with telescopic supporting leg, and engineering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203543912U true CN203543912U (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320668457.0U Expired - Fee Related CN203543912U (en) | 2013-10-28 | 2013-10-28 | Telescopic supporting leg, telescopic supporting leg assembly provided with telescopic supporting leg, and engineering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203543912U (en) |
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2013
- 2013-10-28 CN CN201320668457.0U patent/CN203543912U/en not_active Expired - Fee Related
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| 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: 20140416 Termination date: 20161028 |