CN202416876U - Arm support connecting structure, arm support device and arm support type engineering machine - Google Patents
Arm support connecting structure, arm support device and arm support type engineering machine Download PDFInfo
- Publication number
- CN202416876U CN202416876U CN2012200104755U CN201220010475U CN202416876U CN 202416876 U CN202416876 U CN 202416876U CN 2012200104755 U CN2012200104755 U CN 2012200104755U CN 201220010475 U CN201220010475 U CN 201220010475U CN 202416876 U CN202416876 U CN 202416876U
- Authority
- CN
- China
- Prior art keywords
- jib
- pin joint
- connecting rod
- hydraulic jack
- arm support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Jib Cranes (AREA)
Abstract
The utility model discloses an arm support connecting structure, an arm support device and an arm support type engineering machine. According to the arm support connecting structure provided by the utility model, a first connecting rod and a second connecting rod for connecting two hydraulic oil cylinders with two arm supports are in hinged connection, when the arm support device is in the out-of-service state, the first connecting rod and the second connecting rod are folded along with the adjacent arm support, so that the arm support device is compact in structure, so that the occupied space is reduced, a larger hydraulic oil cylinder can be arranged in a limited cross section of the arm support conveniently, the demand of the folding state or the unfolding state of an ultralong arm support can be met, the length of the arm support can be increased, and the operation height of the arm support type engineering machine is provided; and the operation convenience of the arm device is improved, as the arm support connecting structure has good movement flexibility.
Description
Technical field
The utility model relates to the jib technical field of engineering machinery, particularly a kind of jib syndeton.The utility model also provides a kind of boom device and boom type engineering machinery that comprises above-mentioned jib syndeton in addition.
Background technology
The boom type engineering machinery is mainly used in concrete pumping and lifts purposes such as high fire-fighting, and wherein concrete mixer is a kind of typical boom type engineering machinery, and it mainly utilizes pumping power that concrete is delivered to assigned address along conveyance conduit.
Conveyance conduit is generally positioned on the folding boom device, and boom device generally has the jib that more piece is articulated and connected successively, connects through linkage between the adjacent jib, and when concrete mixer was in off working state, each saved jib and is in rounding state; When concrete mixer is in running order; Each linkage of expanding-contracting action driving through hydraulic jack is opened jib; And further control respectively saves the coordination of linkage between the jib, makes end hose reach the precalculated position, thereby implements concrete pumping work.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of typical jib syndeton in the prior art.
A kind of typical jib syndeton comprises link 3 and two hydraulic jacks in the prior art; Have three pin joints that are triangularly arranged on the said link 3: first pin joint, second pin joint and the 3rd pin joint, link, first jib 1 and second jib 2 are articulated in the 3rd pin joint; One side end and the link of first hydraulic jack 4 are articulated in first pin joint, and the end side and first jib 1 are hinged, and said first hydraulic jack 4, link 3, first jib 1 form quadric chain; One side end and the link 3 of second hydraulic jack 5 are articulated in second pin joint, and the end side and second jib 2 are hinged, and said second hydraulic jack 5, link 3, second jib 2 form quadric chains.
In the prior art in the jib syndeton connecting rod rest take up room bigger; Layout not only bad for boom device; And two space between adjacent jib smaller, can't arrange the hydraulic jack of big specification, so can not satisfy the requirement of the hydraulic jack of expansion of overlength jib or rounding state.
Therefore, how to provide a kind of and take up room for a short time, be convenient to jib and arrange, and simple in structure, satisfy that boom device launches and the jib syndeton of the demand of gathering in, be the technical problem that those skilled in that art need to be resolved hurrily.
The utility model content
First purpose of the utility model is for providing a kind of jib syndeton, and this jib syndeton takes up room little, be convenient to jib and arrange, and simple in structure, satisfy boom device and launch and the gathering demand.Another purpose of the utility model is that a kind of boom device and boom type engineering machinery that comprises above-mentioned jib syndeton is provided.
For solving the problems of the technologies described above; In first kind of technical scheme that the utility model provides; The jib syndeton is arranged between first jib and second jib, and first jib and second jib are articulated in main pin joint, and said jib syndeton comprises connecting rod and hydraulic jack; Said connecting rod comprises the head rod and second connecting rod, and an end and first jib of said head rod are hinged; The other end of said head rod has first pin joint, second pin joint, the 3rd pin joint; One end and second jib of said second connecting rod are hinged, and the other end and head rod are articulated in first pin joint; Said hydraulic jack comprises first hydraulic jack and second hydraulic jack; One end and first jib of first hydraulic jack are hinged, and the other end and head rod are articulated in second pin joint; One end and second jib of second hydraulic jack are hinged, and the other end and head rod are articulated in the 3rd pin joint.
Preferably, said first pin joint, said second pin joint, said the 3rd pin joint are triangularly arranged, and said first pin joint is positioned at the middle part of head rod; Distance between said second pin joint and first pin joint, said the 3rd pin joint equates with distance between first pin joint.
Preferably, the length of said first hydraulic jack, second hydraulic jack, cylinder diameter, bar footpath and impulse stroke equate respectively.
Preferably, the distance of the pin joint of the said head rod and first jib to main pin joint equates with the distance of said second connecting rod with pin joint to the main pin joint of second jib.
In second kind of technical scheme that the utility model provides; The jib syndeton is arranged between first jib and second jib; First jib and second jib are articulated in main pin joint; Said jib syndeton comprises connecting rod and hydraulic jack, and said connecting rod comprises head rod, second connecting rod and the 3rd connecting rod; Have first pin joint, second pin joint, the 3rd pin joint on said the 3rd connecting rod; One end and first jib of head rod are hinged, and an end and second jib of second connecting rod are hinged; The other end of the other end of head rod, second connecting rod, the 3rd connecting rod are articulated in first pin joint; Said hydraulic jack comprises first hydraulic jack and second hydraulic jack; One end and first jib of first hydraulic jack are hinged, and the other end and the 3rd connecting rod are articulated in second pin joint; One end and second jib of second hydraulic jack are hinged, and the other end and the 3rd connecting rod are articulated in the 3rd pin joint.
Preferably, said first pin joint, said second pin joint, said the 3rd pin joint are triangularly arranged, and the distance between said second pin joint and first pin joint, equate with distance between first pin joint with said the 3rd pin joint.
Preferably, the length of said first hydraulic jack, second hydraulic jack, cylinder diameter, bar footpath and impulse stroke equate respectively.
Preferably; The distance of the pin joint of the said head rod and first jib to main pin joint; Equate with the distance of said second connecting rod with pin joint to the main pin joint of second jib; Said first pin joint equals the distance of said first pin joint to the pin joint of said second connecting rod and second jib to the distance of the pin joint of the said head rod and first jib.
On the basis of jib bindiny mechanism, the utility model also provides a kind of boom device, comprises the more piece jib, and adjacent arbitrarily two joint jibs are hinged, and between the adjacent two joint jibs above-mentioned each described jib syndeton is being set also arbitrarily.
In addition, the utility model also provides a kind of boom type engineering machinery, comprises above-mentioned described boom device.
The jib syndeton that the utility model provides adopts a non deformable link to compare with prior art; The head rod that jib syndeton in the utility model connects two oil cylinders and two jibs is connected with hinged mode with second connecting rod, and when boom device is in off working state, the head rod and second connecting rod are folding each other with adjacent jib; Make the boom device structure compact more; Can reduce occupying of space, help in limited jib cross section, arranging the hydraulic jack of bigger specification, can satisfy the demand of expansion of overlength jib or rounding state; Can increase the length of jib; The operation height of boom type engineering machinery is provided, and this jib syndeton has reasonable kinematic dexterity, the convenience of increase boom device operation.
Description of drawings
Fig. 1 is the structural representation of a kind of typical jib syndeton in the prior art;
Fig. 2 is the structural representation of jib syndeton among first kind of embodiment of the utility model;
Fig. 3 is in the sketch map of folded state for jib syndeton shown in Figure 2;
Fig. 4 is the structural representation of jib syndeton among second kind of embodiment of the utility model;
Fig. 5 is in the sketch map of folded state for jib syndeton shown in Figure 4;
Fig. 6 is the schematic diagram of the control system of a kind of jib syndeton that the utility model provided.
The specific embodiment
The core of the utility model is for providing a kind of jib syndeton, and this jib syndeton takes up room little, be convenient to jib and arrange, and simple in structure, satisfy boom device and launch and the gathering demand.Another core of the utility model is that a kind of boom device and boom type engineering machinery that comprises above-mentioned jib syndeton is provided.
Be without loss of generality, this paper introduces its technique effect with the example that is applied as of jib syndeton in concrete mixer, should be appreciated that the jib syndeton that this paper provides can also be applied to other boom type engineering machinery.
In order to make those skilled in the art understand the technical scheme of the utility model better, the utility model is done further to specify below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the structural representation of jib syndeton among first kind of embodiment of the utility model; Fig. 3 is in the sketch map of folded state for jib syndeton shown in Figure 2.
Concrete mixer is a kind of typical boom type engineering machinery; The boom device of concrete mixer is generally positioned on the turntable on its chassis; Boom device generally comprises the jib that more piece is articulated and connected successively; Wherein basic arm is hinged on the turntable, realizes folding, backing through the jib syndeton between the adjacent two joint jibs.
Among the first kind of embodiment that is provided in the utility model; The jib syndeton is arranged between first jib 11 and second jib 15; First jib 11 and second jib 15 are articulated in main pin joint; Said jib syndeton comprises connecting rod and hydraulic jack, and said connecting rod comprises the head rod 13 and second connecting rod 14, and an end of said head rod 13 and first jib 11 are hinged; The other end of said head rod 13 has the first pin joint a, the second pin joint b, the 3rd pin joint c; One end of said second connecting rod 14 and second jib 15 are hinged, and the other end and head rod 13 are articulated in the first pin joint a;
Said hydraulic jack comprises first hydraulic jack 12 and second hydraulic jack 16; One end of first hydraulic jack 12 and first jib 11 are hinged, and the other end and head rod 13 are articulated in the second pin joint b; One end of second hydraulic jack 16 and second jib 15 are hinged, and the other end and head rod 13 are articulated in the 3rd pin joint c.
The jib syndeton that the utility model provides adopts a non deformable link to compare with prior art; The head rod 13 that jib syndeton in the utility model connects two oil cylinders and two jibs is connected with hinged mode with second connecting rod 14, and when boom device is in off working state, the head rod 13 and second connecting rod 14 are folding each other with adjacent jib; Make the boom device structure compact more; Can reduce occupying of space, help in limited jib cross section, arranging the hydraulic jack of bigger specification, can satisfy the demand of expansion of overlength jib or rounding state; Can increase the length of jib; The operation height of boom type engineering machinery is provided, and this jib syndeton has reasonable kinematic dexterity, thereby increase the convenience of boom device operation.
Need to prove that the name of first connecting rod bar 13 and second connecting rod bar 14 does not just in order to express easily have practical significance, both titles also can exchange.
A kind of preferred embodiment in, the first pin joint a, the second pin joint b, the 3rd pin joint c are triangularly arranged, and the first pin joint a is positioned at the middle part of head rod 13; Between the second pin joint b and the first pin joint a apart from ab equal between the 3rd pin joint c and the first pin joint a apart from ac, promptly ab=ac is as shown in Figure 2.
The first pin joint a, the second pin joint b, the 3rd pin joint c are arranged as the triangle mode and can realize the layout of jib syndeton in less space; And the second pin joint b, the 3rd pin joint c divide the distance that is clipped to the first pin joint a to equate in the above-mentioned embodiment; The kinematic dexterity of jib bindiny mechanism helps improving the efficient that boom device launches or draws in than higher.
Certainly, when the space was well-to-do between first jib 11 and second jib 15, the first pin joint a, the second pin joint b, the 3rd pin joint c also can be arranged on the same straight line.
Among above-mentioned each embodiment, the length of first hydraulic jack 12, second hydraulic jack 16, cylinder diameter, bar footpath equate respectively with impulse stroke.The pin joint d of the head rod 13 and first jib 11 equals the distance of the pin joint e of said second connecting rod 14 and second jib 15 to main pin joint to the distance of main pin joint; The said first pin joint a to the pin joint d of said head rod 13 and first jib 11 apart from ad, equal the said first pin joint a to the pin joint e of said second connecting rod 14 and said second jib 15 apart from ae; This arrangement can combine the design of first hydraulic jack and second hydraulic jack of same size, helps realizing the symmetric arrangement of jib bar linkage structure.
In the above-described embodiments; First hydraulic jack 12 and second hydraulic jack 16 directly are articulated on the head rod 13; Also can be articulated in indirectly on the head rod through the 3rd connecting rod, provide second kind of specific embodiment of jib syndeton below, detailed content is described below.
Certainly optimize the distance between each hinge, make the kinematic dexterity of jib syndeton reach optimization through the Computer Simulation motion mode.
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the structural representation of jib syndeton among second kind of embodiment of the utility model; Fig. 5 is in the sketch map of folded state for jib syndeton shown in Figure 4.
In second kind of embodiment; The jib syndeton is arranged between first jib 11 and second jib 15; First jib 11 and second jib 15 are articulated in main pin joint; Said jib syndeton comprises connecting rod and hydraulic jack, and connecting rod comprises head rod 13, second connecting rod 14 and the 3rd connecting rod 17; Have the first pin joint a, the second pin joint b, the 3rd pin joint c on said the 3rd connecting rod 17; One end of head rod 13 and first jib 11 are hinged, and an end of second connecting rod 14 and second jib 15 are hinged; The other end of the other end of head rod 13, second connecting rod 14, the 3rd connecting rod 17 are articulated in the first pin joint a.
Hydraulic jack comprises first hydraulic jack 12 and second hydraulic jack 16; One end of first hydraulic jack 12 and first jib 11 are hinged, and the other end and the 3rd connecting rod 17 are articulated in the second pin joint b; One end of second hydraulic jack 16 and second jib 15 are hinged, and the other end and the 3rd connecting rod 17 are articulated in the 3rd pin joint c.
This embodiment is compared with first kind of embodiment; Increased by the 3rd connecting rod 17 in this embodiment; Have the first pin joint a, the second pin joint b and the 3rd pin joint c on the 3rd connecting rod 17; This is provided with the flexibility that can further increase the jib syndeton, makes the rotational angle of connected two jibs bigger.
The operating principle of jib syndeton is basic identical with first embodiment in the present embodiment, repeats no more at this.
The first pin joint a among this embodiment, the second pin joint b and the 3rd pin joint c can be triangularly arranged; Three pin joints are triangularly arranged and help increasing the kinematic dexterity of jib syndeton; Help improving the boom device operating efficiency, and between the second pin joint b and the first pin joint a apart from ab, equal between said the 3rd pin joint c and the first pin joint a apart from ac; Be ab=ac, this is furnished with and is beneficial to the symmetric arrangement that realizes the jib syndeton.
Among above-mentioned each embodiment, the length of first hydraulic jack 12, second hydraulic jack 16, cylinder diameter, bar footpath equate respectively with impulse stroke; The pin joint d of the head rod 13 and first jib 11 equals the distance of the pin joint of said second connecting rod 14 and second jib 15 to main pin joint e to the distance of main pin joint; The said first pin joint a to the pin joint d of said head rod 13 and first jib 11 apart from ab, equal the said first pin joint a to the pin joint e of said second connecting rod 14 and said second jib 15 apart from ae; This arrangement can combine the design of first hydraulic jack and second hydraulic jack of same size, helps realizing the symmetric arrangement of jib bar linkage structure.
In concrete design process; Can make head rod 13 have identical length with second connecting rod 14, like this, an end of head rod 13, second connecting rod 14 is hinged; The other end is hinged on respectively on first jib 11, second jib 15, and makes ab=ae.
Please refer to Fig. 6, Fig. 6 is the schematic diagram of the control system of a kind of jib syndeton that the utility model provided.
Further; The rodless cavity of the rodless cavity of first hydraulic jack 12 and second hydraulic jack 16 is communicated with among above-mentioned each embodiment; Promptly the actuator port of two rodless cavities is connected on the same hydraulic circuit through pipeline together; As shown in Figure 6, the hydraulic oil that drives two oil cylinder work is supplied with by same hydraulic pump 32, and this mode can increase the harmony of first hydraulic jack 12 and second hydraulic jack 16 and connecting rod mechanism movement.
Further, the rod chamber of the rod chamber of first hydraulic jack 12 and said second hydraulic jack 16 is communicated with, and further increases the harmony of first hydraulic jack 12 and second hydraulic jack 16 and connecting rod mechanism movement.
Additionally; The pressure control device 30 further stability that increase oil pressure on the hydraulic circuit can also be set on the hydraulic circuit; Increase the job stability that two oil cylinders stretch and shorten, reversal valve 31 parts such as grade can also be set, help realizing mechanical automation control.
On the basis of jib syndeton, the utility model also provides a kind of boom device, comprises the more piece jib, and adjacent arbitrarily two joint jibs are hinged, and said jib syndeton is above-mentioned described jib syndeton.
In addition; The utility model also provides a kind of boom type engineering machinery; Comprise the described boom device of above-mentioned arbitrary embodiment, above-mentioned jib syndeton has above-mentioned technique effect, comprises that the boom device of this jib syndeton and boom type engineering machinery also should have above-mentioned technique effect.
Other part informations of boom type engineering machinery can be with reference to prior art, does not do at this and gives unnecessary details.
More than a kind of jib syndeton, boom device and boom type engineering machinery that the utility model provided have been carried out detailed introduction.Used concrete example among this paper the principle and the embodiment of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model.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. a jib syndeton is arranged between first jib (11) and second jib (15), and first jib (11) and second jib (15) are articulated in main pin joint, and said jib syndeton comprises connecting rod and hydraulic jack, it is characterized in that,
Said connecting rod comprises head rod (13) and second connecting rod (14), and an end of said head rod (13) and first jib (11) are hinged; The other end of said head rod (13) has first pin joint, second pin joint, the 3rd pin joint; One end of said second connecting rod (14) and second jib (15) are hinged, and the other end and head rod (13) are articulated in first pin joint;
Said hydraulic jack comprises first hydraulic jack (12) and second hydraulic jack (16); One end of first hydraulic jack (12) and first jib (11) are hinged, and the other end and head rod (13) are articulated in second pin joint; One end of second hydraulic jack (16) and second jib (15) are hinged, and the other end and head rod (13) are articulated in the 3rd pin joint.
2. jib syndeton as claimed in claim 1 is characterized in that, said first pin joint, said second pin joint, said the 3rd pin joint are triangularly arranged, and said first pin joint is positioned at the middle part of head rod (13); Distance between said second pin joint and first pin joint equals the distance between said the 3rd pin joint and first pin joint.
3. jib syndeton as claimed in claim 1; It is characterized in that; The pin joint of said head rod (13) and first jib (11) is the distance of main pin joint extremely, equals the distance of the pin joint of said second connecting rod (14) and second jib (15) to main pin joint; Said first pin joint equals said first pin joint to the distance of said second connecting rod (14) with the pin joint of said second jib (15) to the distance of said head rod (13) with the pin joint of first jib (11).
4. like each described jib syndeton of claim 1 to 3, it is characterized in that the length of said first hydraulic jack (12), second hydraulic jack (16), cylinder diameter, bar footpath and impulse stroke equate respectively.
5. a jib syndeton is arranged between first jib (11) and second jib (15), and first jib (11) and second jib (15) are articulated in main pin joint, and said jib syndeton comprises connecting rod and hydraulic jack, it is characterized in that,
Said connecting rod comprises head rod (13), second connecting rod (14) and the 3rd connecting rod (17); Have first pin joint, second pin joint, the 3rd pin joint on said the 3rd connecting rod (17); One end of head rod (13) and first jib (11) are hinged, and an end of second connecting rod (14) and second jib (15) are hinged; The other end of the other end of head rod (13), second connecting rod (14), the 3rd connecting rod (17) are articulated in first pin joint;
Said hydraulic jack comprises first hydraulic jack (12) and second hydraulic jack (16); One end of first hydraulic jack (12) and first jib (11) are hinged, and the other end and the 3rd connecting rod (17) are articulated in second pin joint; One end of second hydraulic jack (16) and second jib (15) are hinged, and the other end and the 3rd connecting rod (17) are articulated in the 3rd pin joint.
6. jib syndeton as claimed in claim 5; It is characterized in that; Said first pin joint, said second pin joint, said the 3rd pin joint are triangularly arranged; And the distance between said second pin joint and first pin joint equals the distance between said the 3rd pin joint and first pin joint.
7. jib syndeton as claimed in claim 5; It is characterized in that; The distance of the pin joint of said head rod (13) and first jib (11) to main pin joint; Equal the distance of the pin joint of said second connecting rod (14) and second jib (15) to main pin joint, said first pin joint equals the distance of said first pin joint to the pin joint of said second connecting rod (14) and said second jib (15) to the distance of said head rod (13) with the pin joint of first jib (11).
8. like each described jib syndeton of claim 5 to 6, it is characterized in that the length of said first hydraulic jack (12), second hydraulic jack (16), cylinder diameter, bar footpath and impulse stroke equate respectively.
9. a boom device comprises the more piece jib, and adjacent arbitrarily two joint jibs are hinged, and it is characterized in that, also is being provided with like each described jib syndeton of claim 1 to 8 between the adjacent two joint jibs arbitrarily.
10. a boom type engineering machinery is characterized in that, comprises the described boom device of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200104755U CN202416876U (en) | 2012-01-11 | 2012-01-11 | Arm support connecting structure, arm support device and arm support type engineering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200104755U CN202416876U (en) | 2012-01-11 | 2012-01-11 | Arm support connecting structure, arm support device and arm support type engineering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202416876U true CN202416876U (en) | 2012-09-05 |
Family
ID=46741653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200104755U Expired - Lifetime CN202416876U (en) | 2012-01-11 | 2012-01-11 | Arm support connecting structure, arm support device and arm support type engineering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202416876U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452321A (en) * | 2013-09-05 | 2013-12-18 | 中联重科股份有限公司 | Arm support structure and manufacturing method thereof, arm support and arrangement method thereof and pumping equipment |
| CN103470050A (en) * | 2013-09-10 | 2013-12-25 | 三一汽车制造有限公司 | Arm support, material-distributing rod and concrete pump truck |
| CN105217338A (en) * | 2014-06-24 | 2016-01-06 | 罗剑锋 | A kind of boats and ships hydraulic foldable conveying arm |
-
2012
- 2012-01-11 CN CN2012200104755U patent/CN202416876U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452321A (en) * | 2013-09-05 | 2013-12-18 | 中联重科股份有限公司 | Arm support structure and manufacturing method thereof, arm support and arrangement method thereof and pumping equipment |
| CN103452321B (en) * | 2013-09-05 | 2015-11-25 | 中联重科股份有限公司 | Arm support structure and manufacturing method thereof, arm support and arrangement method thereof and pumping equipment |
| CN103470050A (en) * | 2013-09-10 | 2013-12-25 | 三一汽车制造有限公司 | Arm support, material-distributing rod and concrete pump truck |
| CN105217338A (en) * | 2014-06-24 | 2016-01-06 | 罗剑锋 | A kind of boats and ships hydraulic foldable conveying arm |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102383603B (en) | Concrete pump truck and arm support device thereof | |
| CN202416876U (en) | Arm support connecting structure, arm support device and arm support type engineering machine | |
| CN102359277B (en) | Arm frame device and engineering machine | |
| CN102409857B (en) | Boom device and concrete pump truck | |
| CN102561703A (en) | Boom device and concrete pump truck | |
| CN201581641U (en) | Distributing device and concrete equipment provided therewith | |
| CN105971284B (en) | Multifunctional cloth pump truck | |
| CN202481966U (en) | Suspension arm of crane | |
| CN211037853U (en) | Six-section concrete pump truck arm support device | |
| CN202418066U (en) | Hydraulic system and concrete equipment | |
| CN102583174A (en) | Crane boom | |
| CN2877768Y (en) | Folding fire engine | |
| CN202194389U (en) | Concrete pumping equipment and foldable cantilever crane thereof | |
| CN202865883U (en) | Retractable evacuating device for loader-digger | |
| CN103896167A (en) | Double variable amplitude combined cantilever crane swing mechanism, lifting device and pallet carrier | |
| CN201857760U (en) | Sixth-section arm foldable for 180 degrees of concrete pump truck | |
| CN203022349U (en) | Boom device and engineering machinery | |
| CN204616600U (en) | Harvester working arm frame for movement | |
| CN103470050A (en) | Arm support, material-distributing rod and concrete pump truck | |
| CN113969666A (en) | Concrete pump truck | |
| CN202284386U (en) | Arm support device and concrete pumping equipment | |
| CN103470049B (en) | Boom system and apparatus for distributing | |
| CN202672747U (en) | Concrete distributing pipe, concrete distributing system and concrete conveying equipment | |
| CN204212430U (en) | A kind of boom system and concrete mixer | |
| CN201843960U (en) | Construction machinery and arm support expansion mechanism thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SANY AUTOMOBILE MANUFACTURING CO., LTD. Free format text: FORMER OWNER: SANYI HEAVY INDUSTRY CO LTD Effective date: 20130506 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130506 Address after: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee after: SANY Automobile Manufacturing Co., Ltd. Address before: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee before: Sanyi Heavy Industry Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |