CN201587356U - Concrete pump truck and arm support device thereof - Google Patents
Concrete pump truck and arm support device thereof Download PDFInfo
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- CN201587356U CN201587356U CN2010201169300U CN201020116930U CN201587356U CN 201587356 U CN201587356 U CN 201587356U CN 2010201169300 U CN2010201169300 U CN 2010201169300U CN 201020116930 U CN201020116930 U CN 201020116930U CN 201587356 U CN201587356 U CN 201587356U
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- jib
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Abstract
The utility model discloses an arm support device of a concrete pump truck. The arm support device comprises a plurality of nodes of arm supports that are articulated, wherein any arm support can rotate correspondingly to the adjacent arm support under the action of a driving part. The arm support device also comprises at least one node of short arm (1), wherein the short arm(s) (1) is/are articulated with the tail end of the last node of the arm support by a first articulated shaft (2), and a first power part is arranged between the short arm(s) (1) and the last node of the arm support; the short arm(s) (1) can rotate around the first articulated shaft (2) correspondingly to the last node of arm support under the action of the first power part, so that when the short arm(s) (1) is/are folded, the short arm(s) (1) is/are positioned under the last node of arm support, and the included angle of the axis and the vertical plane of the short arm(s) (1) is less than or equal to 45 degrees, thereby effectively reducing the height and length of the arm support device after being folded. The utility model also discloses the concrete pump truck with the arm support device.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of boom device that is used for concrete pump truck.The utility model also relates to a kind of concrete pump truck that comprises above-mentioned boom device.
Background technology
Along with the fast development of China's economic construction, market increases day by day for the demand of constructional engineering machinery especially concrete pump truck.
In the working process of concrete pump truck, need by be fixed in delivery pipe on the jib with transmission and concrete transmission to assigned address, and variation along with transfer position, jib need drive delivery pipe and realize actions such as expansion, gathering and rotation, therefore, jib in the concrete pumping equipment is generally more piece, and respectively saves between the jib and can fold.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of boom device of representative type concrete pump truck when launching; Fig. 2 is the structural representation of a kind of representative type concrete pump truck when boom device is folding.
In a kind of representative type concrete pump truck, its jib comprises first jib 11, second jib 12, the 3rd jib 13, the 4th jib 14 and the 5th jib 15, and each adjacent two jib is hinged by jointed shaft respectively; Folding oil cylinder 16 and connecting rod 17 all are installed, and it is folding with respect to another jib that is adjacent to drive a joint jib by folding oil cylinder 16 and connecting rod 17 between above-mentioned each adjacent two jib, to realize to differing heights position delivering concrete; Simultaneously, when needs are cut to, each can be saved the folding back of drawing in of jib and transport.
In work progress, need stretching, extension by jib with transmission and concrete transmission to assigned address, therefore, the total length that increases jib just becomes those skilled in the art's long-term aim.At present, the folding mode of jib is generally R type, RZ type or Z type etc., because traffic law is for the length of concrete pump truck and highly all restricted, more than various folding modes make the jib joint number more for a long time, it has long transportation lengths and higher shipping height after folding, thereby has limited the further raising of jib total length.
Therefore, how to satisfy the length after jib folds and highly to satisfy under the condition of transportation request, improving the vehicle body space of concrete pump truck and arrange that the total length that improves jib just becomes the problem that those skilled in the art need solve.
The utility model content
The purpose of this utility model provides a kind of boom device of concrete pump truck, and the total length of jib is improved effectively in its folding back under the condition that satisfies length and height transportation request.Another purpose of the present utility model provides a kind of concrete pump truck that comprises above-mentioned boom device, and it is comparatively reasonable that its vehicle body space is arranged.
For solving the problems of the technologies described above, the utility model provides a kind of boom device of concrete pump truck, comprises the jib that more piece is hinged, and arbitrary jib rotates with respect to the jib that is adjacent under the effect of drive element; Also comprise at least one joint galianconism, described galianconism is articulated in the end of minor details jib by first jointed shaft, and between described galianconism and the described minor details jib first power part is installed; Described galianconism is under the effect of described first power part, rotate around described first jointed shaft with respect to described minor details jib, when folding with the described galianconism of box lunch, described galianconism is positioned at the below of described minor details jib, and the angle of its axis and perpendicular is less than or equal to 45 °.
Preferably, when described galianconism launched, the angle of the axis extended line of its axis and described minor details jib was less than or equal to 45 °.
Preferably, described galianconism vertically is positioned at the afterbody of described concrete pump truck when folding.
Preferably, described first power part is the expansion oil cylinder that is installed between described minor details jib and the described galianconism.
Preferably, an end of described expansion oil cylinder is articulated in described minor details jib, and its other end is articulated in described galianconism.
Preferably, the two ends of described expansion oil cylinder are articulated in described minor details jib and described galianconism by hinged seat respectively.
Preferably, described first power part comprises the expansion oil cylinder, and the first connecting rod and the second connecting rod that are articulated in described minor details jib and described galianconism respectively with its first end; Second end of described first connecting rod and second end of described second connecting rod are hinged, and an end of described expansion oil cylinder is fixed in described minor details jib or described galianconism, and its other end is captiveed joint with described first connecting rod or second connecting rod.
Preferably, also comprise positioning element; Described positioning element is installed between described minor details jib and the described galianconism, so that selectively fix the position of described galianconism with respect to described minor details jib.
Preferably, described galianconism comprises first galianconism and second galianconism; One end of described first galianconism is articulated in described minor details jib by first jointed shaft, and its second end is hinged by second jointed shaft and described second galianconism that are parallel to described first jointed shaft; Between described first galianconism and the described minor details jib first power part is installed, so that described first galianconism rotates around described first jointed shaft with respect to described minor details jib, between described first galianconism and described second galianconism second power part is installed, so that described second galianconism upwards rotates around described second jointed shaft with respect to described first galianconism.
The utility model also provides a kind of concrete pump truck, comprises above-mentioned each described boom device.
The boom device of concrete pump truck provided by the utility model comprises jib and at least one joint galianconism that more piece is hinged, and galianconism is articulated in the end of minor details jib by first jointed shaft; Between galianconism and the minor details jib first power part is installed and galianconism rotates around first jointed shaft with respect to the minor details jib under the effect of first power part.When boom device is in running order, by first power part between galianconism and the minor details jib, driving galianconism rotates to the direction away from the minor details jib around first jointed shaft, at this moment, the axis extended line of galianconism and minor details jib forms the angle that is less than or equal to 45 °, thereby can increase the length of its sponson on the basis of existing jib total length; And when boom device needs transfer, transition, drive galianconism around of the be directed downwards rotation of first jointed shaft by first power part to close minor details jib, make galianconism be positioned at the below of minor details jib, and make the angle between its axis and the perpendicular be less than or equal to 45 °, thereby effectively reduce height and length after boom device folds, and then realized under the condition that satisfies length and height transportation request, improving the purpose of the total length of jib effectively.
A kind of preferred embodiment in, an end that launches oil cylinder is articulated in the minor details jib, and its other end is articulated in galianconism.When the cylinder bar that launches oil cylinder stretches out in cylinder barrel, driving galianconism launches with respect to the minor details jib, because it is hinged that the two ends of expansion oil cylinder and the connection mode of galianconism or minor details jib are, then in the expansion process of galianconism, launch oil cylinder and can rotate with respect to galianconism and minor details jib.Like this, when the cylinder bar that launches oil cylinder extend out to a certain position, the axis of the axis of galianconism and minor details jib was 180 ° of angles, and at this moment, galianconism is expanded to farm labourer fully and makes length, thereby has further improved effective total length of boom device.Simultaneously, when launching the cylinder bar withdrawal cylinder barrel of oil cylinder, because it is hinged to launch the two ends of oil cylinder, it also is the rotation that its two ends all can have certain angle, then when the expansion oil cylinder is retracted to a certain position, the axis of galianconism can be positioned at perpendicular substantially, thereby makes galianconism can dwindle the total length of boom device to greatest extent after folding.
In another preferred embodiment, above-mentioned boom device can also comprise positioning element; This positioning element is installed between minor details jib and the galianconism, so that the fixing position of minor details jib and galianconism selectively.When galianconism launches or is folded to a certain suitable angle, can be by the fixing position between jib and the minor details jib of positioning element, thus improved the reliability that device launches and folds.
Description of drawings
Fig. 1 is the structural representation of a kind of boom device of representative type concrete pump truck when launching;
Fig. 2 is the structural representation of a kind of representative type concrete pump truck when boom device is folding;
Fig. 3 is the structural representation of concrete pump truck that the utility model provides a kind of specific embodiment when boom device is folding;
A kind of local structure scheme drawing of embodiment when Fig. 4 launches for the boom device of concrete pump truck that the utility model provides;
Fig. 5 is the enlarged drawing of A part among Fig. 4;
Fig. 6 is the local structure scheme drawing of the boom device of concrete pump truck that the utility model provides a kind of specific embodiment when folding;
Fig. 7 is the enlarged drawing of B part among Fig. 6.
The specific embodiment
Core of the present utility model provides a kind of boom device of concrete pump truck, and the total length of jib is improved effectively in its folding back under the condition that satisfies length and height transportation request.Another core of the present utility model provides a kind of concrete pump truck that comprises above-mentioned boom device, and it is comparatively reasonable that its vehicle body space is arranged.
In order to make those skilled in the art person understand the technical solution of the utility model better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 3, Fig. 3 is the structural representation of concrete pump truck that the utility model provides a kind of specific embodiment when boom device is folding.
In a kind of specific embodiment, boom device provided by the utility model, be used for concrete pump truck, it comprises the jib that more piece is hinged, wherein first joint jib is articulated on the platform of concrete pump truck, and can on the platform of concrete pump truck, hold up under the effect of external force, and respectively save jib and all can under the effect of drive element, rotate with respect to the jib that is adjacent, thereby make the minor details jib reach the corresponding work height.The end of minor details jib is hinged with at least one joint galianconism 1, and galianconism 1 is hinged with the minor details jib by first jointed shaft 2, and first power part is installed between the two, and galianconism 1 can rotate around first jointed shaft 2 under the effect of this first power part.
When galianconism 1 launched, the angle of the axis extended line of the axis of galianconism 1 and above-mentioned minor details jib need be less than or equal to 45 °.Preferably, this angle can be 0 °, also is that the axis of galianconism 1 overlaps with the axis extended line of minor details jib, and at this moment, the axis of galianconism and minor details jib is 180 ° of angles.When galianconism 1 launches and when being in this kind state, effective total length maximum of boom device, thus significantly increased the work total length of boom device.
In some operating mode, may require galianconism 1 along continuous straight runs to launch, at this moment, galianconism 1 is certain degree with the minor details jib.When galianconism 1 folded, galianconism 1 was positioned at the below of minor details jib, and the angle of the axis of galianconism 1 and perpendicular is less than or equal to 45 °.Preferably, this angle can be 0 °, also is that galianconism 1 just is positioned at perpendicular.Like this, galianconism 1 when folding along the length over ends of body minimum that direction takes up space of concrete pump truck, thereby effectively reduce the length space that galianconism 1 takies.
Apparently, the length of above-mentioned galianconism 1 should satisfy, and should be not after galianconism 1 is folding interfere with other parts of ground or pump truck.
When above-mentioned galianconism 1 launches and the axis extended line angle of minor details jib be less than or equal to 45 ° and be interpreted as, galianconism 1 be arranged in the minor details jib both sides either side and be the angle that is less than or equal to 45 ° with the axis extended line of minor details jib.Correspondingly, when above-mentioned galianconism 1 is folding and the angle of perpendicular be less than or equal to 45 ° and be interpreted as, galianconism 1 is arranged in the either side of the both sides of perpendicular, and is the angle that is less than or equal to 45 ° with perpendicular.
The above-mentioned connection mode that respectively saves between the jib can be hinged by the jointed shaft on the perpendicular, also can be hinged by the jointed shaft on the horizontal surface, can certainly realize connection between each adjacent jib by other folding connection modes.Each saves between the adjacent jib should be equipped with drive element, rotates with respect to the jib that is adjacent so that drive arbitrary jib.This drive element can be the mode of oil cylinder, the cooperation of oil cylinder connecting rod, also can be conventional other type of drive of using in this area.
Above-mentionedly respectively save jib and galianconism 1 all can be hollow steel framed structure, because boom device bears greater impact power in the course of the work, the material that therefore respectively saves jib and galianconism 1 should have enough rigidity and intensity, to guarantee functional reliability.Apparently, each material that saves jib and galianconism 1 also is not limited to steel, also can be the conventional metallic material that uses in other this areas, and its structure also is not limited to hollow structure, also can be solid steel part or truss etc.
Above-mentioned first jointed shaft 2 is owing to need bearing load in the working process of boom device, then first jointed shaft 2 should have enough strength and stiffness, to guarantee that boom device has high reliability in construction.
Particularly, all can be connected between above-mentioned each adjacent two jib and between minor details jib and the galianconism 1 by bearing pin.
Apparently, above-mentioned respectively saving on jib and the galianconism 1 all is equipped with concrete delivery pipe, and the cement concrete after the stirring is delivered to the appointment construction location by delivery pipe.The flexible tube that this delivery pipe can be made for high-abrasive material, in the working process of concrete pump truck, constantly there is cement concrete to be delivered to assigned address from delivery pipe, cement concrete can cause bigger wearing and tearing to the inwall of delivery pipe, the delivery pipe that uses high-abrasive material to make is longer service life, thus the maintenance cost of having saved boom device.
Above-mentioned high-abrasive material can be elastomeric material, and its cost is lower, and in-use performance is stable.Certainly also be not limited to rubber, any have a certain flexibility, and the high-abrasive material that can bend to a certain extent all can be used as the material of delivery pipe.
Above-mentioned delivery pipe can be one-piece construction, also promptly respectively saving the delivery pipe of installing on the jib is the long delivery pipe of same length, and many delivery pipes need be communicated with by joint, thereby avoided delivery pipe to disconnect in the course of the work, and then improved the functional reliability of boom device.
When boom device is in running order, by first power part between galianconism 1 and the minor details jib, driving galianconism 1 rotates to the direction away from the minor details jib around first jointed shaft 2, at this moment, galianconism 1 forms the angle that is less than or equal to 45 ° with the axis extended line of minor details jib, thereby can increase the length of its sponson on the basis of existing jib total length; And when boom device needs transfer, transition, driving galianconism by first power part rotates to the direction near the minor details jib around first jointed shaft 2, make galianconism 1 be positioned at the below of minor details jib, and the angle between its axis and the perpendicular is less than or equal to 45 °, thereby effectively reduce height and length after boom device folds, and then realized under the condition that satisfies length and height transportation request, improving the purpose of the total length of jib effectively.
Above-mentioned boom device can specifically comprise pivotally attached first jib 31, second jib 32, the 3rd jib 33, the 4th jib 34 and the 5th jib 35 successively, and the end of described the 5th jib 35 is hinged by described first jointed shaft 2 and described galianconism 1.Then the minor details jib described in the preamble is the 5th jib 35 herein, and all structural properties of the above minor details jib all are applicable to the 5th jib 35.Owing to comprised five joint jibs in the structure, the total length of jib is in ultimate limit state substantially, under this kind state, galianconism 1 is articulated in the end of the 5th jib 35 by first jointed shaft 2, thereby make boom device be further improved, have bigger actual use meaning at the total length that stretches.
Apparently, boom device provided by the utility model is not limited to and comprises five joint jibs, according to the technical merit of aspects such as operating needs in the real work and processing and manufacturing, the jib joint number can be less than five joints, and the jib joint number in the boom device should not be subjected to restriction of the present utility model.
Please refer to Fig. 4 to Fig. 7, a kind of local structure scheme drawing of embodiment when Fig. 4 launches for the boom device of concrete pump truck that the utility model provides; Fig. 5 is the enlarged drawing of A part among Fig. 4; Fig. 6 is the local structure scheme drawing of the boom device of concrete pump truck that the utility model provides a kind of specific embodiment when folding; Fig. 7 is the enlarged drawing of B part among Fig. 6.
In the another kind of specific embodiment, be example with above-mentioned five boom devices that save jibs, above-mentioned first power part is the expansion oil cylinder 4 that is installed between the 5th jib 35 and the galianconism 1.Oil cylinder is an engine installation comparatively conventional in this area, and its outputting power is steady, and cost is lower.
One end of above-mentioned expansion oil cylinder 4 is articulated in the 5th jib 35, and its other end is articulated in galianconism 1.When the cylinder bar 42 that launches oil cylinder 4 stretches out in cylinder barrel 41, driving galianconism 1 launches with respect to the 5th jib 35, because it is hinged that the two ends of expansion oil cylinder 4 and the connection mode of galianconism 1 or the 5th jib 35 are, then in the expansion process of galianconism 1, launch oil cylinder 4 and can rotate with respect to galianconism 1 and the 5th jib 35.Like this, when the cylinder bar 42 that launches oil cylinder 4 extend out to a certain position, the axis of galianconism 1 and the 5th jib 35 spool can be 180 ° of angles earlier, at this moment, galianconism 1 is expanded to farm labourer fully and makes length, thereby has further improved effective total length of boom device.Simultaneously, when the cylinder bar 42 that launches oil cylinder 4 is withdrawn cylinder barrels 41, because it is hinged to launch the two ends of oil cylinder 4, it also is the rotation that its two ends all can have certain angle, then when expansion oil cylinder 4 is retracted to a certain position, galianconism 1 axially can be positioned at perpendicular substantially, thereby make galianconism 1 can dwindle the length of boom device after folding after folding to greatest extent.
Above-mentioned expansion oil cylinder 4 can be articulated in galianconism 1 by cylinder bar 42, at this moment, is articulated in the 5th jib 35 by cylinder barrel 41; Also can be articulated in the 5th jib 35, at this moment, be articulated in galianconism 1 by cylinder barrel 41 by its cylinder bar 42.
The cylinder bar 42 of above-mentioned expansion oil cylinder 4 and cylinder barrel 41 can be hinged with galianconism 1 and the 5th jib 35 by the hinged seat 5 that is arranged on galianconism 1 and the 5th jib 35 respectively, so that improve installation reliability, and simplify installation process.
Above-mentioned expansion oil cylinder 4 can be hinged by connecting rod mechanism and galianconism 1 and the 5th jib 35.Particularly, aforementioned link mechanism can comprise first connecting rod and second connecting rod, and an end of first connecting rod is articulated in galianconism 1, and an end of its other end and second connecting rod is hinged, and the other end of second connecting rod is articulated in the 5th jib 35.
By launching the combined action of oil cylinder 4 and connecting rod mechanism, to realize the rotation of galianconism 1 with respect to the 5th jib 35, the connecting rod mechanism transmission of power is stable, and the power of expansion oil cylinder 4 transmissions is bigger, thereby has guaranteed the functional reliability of boom device.Above-mentioned power part can also comprise HM Hydraulic Motor, and this hydraulic motor output shaft is connected with first jointed shaft 2 by coupler, and at this moment, first jointed shaft 2 is fixed in galianconism 1.When HM Hydraulic Motor was worked, its output shaft passed to first jointed shaft 2 with power by coupler, and drove galianconism 1 rotation by first jointed shaft 2, the compact conformation of this kind structure, and space hold is little.
In boom device provided by the utility model, can also comprise positioning element; This positioning element is installed between described the 5th jib 35 and the galianconism 1, so that the fixing relative position of galianconism 1 and the 5th jib 35 selectively.
This positioning element also is not limited to and is installed between the 5th jib 35 and the galianconism 1, on the theory, also can be installed on appropriate location on the 5th jib 35 or the appropriate location on the jib 1.
Can also be further improved boom device provided by the utility model.
In the another kind of specific embodiment, galianconism 1 provided by the utility model can further include first galianconism and second galianconism, one end of this first galianconism is articulated in second end of the 5th jib 35, the first galianconism by first jointed shaft 2 hinged by second jointed shaft and second galianconism that are in substantially parallel relationship to first jointed shaft 2; Between first galianconism and the minor details jib first power part is installed, and under the effect of first power part, move downward around first jointed shaft 2, between first galianconism and second galianconism second power part is installed, second galianconism upwards rotates around second jointed shaft with respect to first galianconism under the effect of second engine installation.
Apparently, above-mentioned first galianconism and second galianconism when folding, all be positioned at the minor details jib below.
Galianconism is arranged to be hinged and two parts in relative rotation, helps further under the condition that guarantees folding back requirement for height, to improve effective total length of boom device.
Theoretically, under the condition that satisfies folding back height and length requirement, above-mentioned galianconism 1 also can comprise the more piece that is hinged.
Above-mentioned second power part can be articulated in the oil cylinder of first galianconism and second galianconism for two ends respectively.Apparently, above-mentioned second power part also is not limited to oil cylinder, swings with respect to first galianconism as long as can realize second galianconism, and the concrete form of second power part should not be subjected to the restriction of this specification sheets.
Except above-mentioned boom device, the utility model also provides a kind of concrete pump truck that comprises above-mentioned boom device, and the structure of these other each several parts of concrete pump truck please refer to prior art, does not repeat them here.
More than a kind of concrete pump truck provided by the utility model and boom device thereof are described in detail.Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. the boom device of a concrete pump truck comprises the jib that more piece is hinged, and arbitrary jib rotates with respect to the jib that is adjacent under the effect of drive element; It is characterized in that, also comprise at least one joint galianconism (1), described galianconism (1) is articulated in the end of minor details jib by first jointed shaft (2), and between described galianconism (1) and the described minor details jib first power part is installed; Described galianconism (1) is under the effect of described first power part, rotate around described first jointed shaft (2) with respect to described minor details jib, when folding with the described galianconism of box lunch (1), described galianconism (1) is positioned at the below of described minor details jib, and the angle of its axis and perpendicular is less than or equal to 45 °.
2. the boom device of concrete pump truck according to claim 1 is characterized in that, when described galianconism launched, the angle of the axis extended line of its axis and described minor details jib was less than or equal to 45 °.
3. the boom device of concrete pump truck according to claim 2 is characterized in that, described galianconism (1) vertically is positioned at the afterbody of described concrete pump truck when folding.
4. according to the boom device of each described concrete pump truck of claim 1 to 3, it is characterized in that described first power part is for being installed on the expansion oil cylinder (4) between described minor details jib and the described galianconism (1).
5. the boom device of concrete pump truck according to claim 4 is characterized in that, an end of described expansion oil cylinder (4) is articulated in described minor details jib, and its other end is articulated in described galianconism (1).
6. the boom device of concrete pump truck according to claim 5 is characterized in that, the two ends of described expansion oil cylinder (4) are articulated in described minor details jib and described galianconism (1) by hinged seat (5) respectively.
7. according to the boom device of each described concrete pump truck of claim 1 to 3, it is characterized in that, described first power part comprises expansion oil cylinder (4), and the first connecting rod and the second connecting rod that are articulated in described minor details jib and described galianconism (1) respectively with its first end; Second end of described first connecting rod and second end of described second connecting rod are hinged, and an end of described expansion oil cylinder (4) is fixed in described minor details jib or described galianconism (1), and its other end is captiveed joint with described first connecting rod or second connecting rod.
8. according to the boom device of each described concrete pump truck of claim 1 to 3, it is characterized in that, also comprise positioning element; Described positioning element is installed between described minor details jib and the described galianconism (1), so that selectively fix the position of described galianconism (1) with respect to described minor details jib.
9. according to the boom device of each described concrete pump truck of claim 1 to 3, it is characterized in that described galianconism (1) comprises first galianconism and second galianconism; One end of described first galianconism is articulated in described minor details jib by first jointed shaft (2), and its second end is hinged by second jointed shaft and described second galianconism that are parallel to described first jointed shaft (2); Between described first galianconism and the described minor details jib first power part is installed, so that described first galianconism rotates around described first jointed shaft (2) with respect to described minor details jib, between described first galianconism and described second galianconism second power part is installed, so that described second galianconism upwards rotates around described second jointed shaft with respect to described first galianconism.
10. a concrete pump truck is characterized in that, comprises each described boom device of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201169300U CN201587356U (en) | 2010-02-05 | 2010-02-05 | Concrete pump truck and arm support device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201169300U CN201587356U (en) | 2010-02-05 | 2010-02-05 | Concrete pump truck and arm support device thereof |
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| CN201587356U true CN201587356U (en) | 2010-09-22 |
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| CN2010201169300U Expired - Lifetime CN201587356U (en) | 2010-02-05 | 2010-02-05 | Concrete pump truck and arm support device thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793092B (en) * | 2010-02-05 | 2011-07-06 | 三一重工股份有限公司 | Concrete pump truck and boom device thereof |
| CN102425308A (en) * | 2011-08-19 | 2012-04-25 | 三一重工股份有限公司 | Cantilever crane device and spreading method thereof, concrete pump truck |
-
2010
- 2010-02-05 CN CN2010201169300U patent/CN201587356U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793092B (en) * | 2010-02-05 | 2011-07-06 | 三一重工股份有限公司 | Concrete pump truck and boom device thereof |
| CN102425308A (en) * | 2011-08-19 | 2012-04-25 | 三一重工股份有限公司 | Cantilever crane device and spreading method thereof, concrete pump truck |
| CN102425308B (en) * | 2011-08-19 | 2014-04-16 | 三一汽车制造有限公司 | Cantilever crane device and spreading method thereof, concrete pump truck |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20100922 Effective date of abandoning: 20110706 |