CN202400760U - Crane and telescopic arm device of same - Google Patents
Crane and telescopic arm device of same Download PDFInfo
- Publication number
- CN202400760U CN202400760U CN2011205694472U CN201120569447U CN202400760U CN 202400760 U CN202400760 U CN 202400760U CN 2011205694472 U CN2011205694472 U CN 2011205694472U CN 201120569447 U CN201120569447 U CN 201120569447U CN 202400760 U CN202400760 U CN 202400760U
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- telescopic boom
- telescopic
- telescopic arm
- joint
- stage expansion
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Abstract
The utility model discloses a telescopic arm device of a crane and the crane comprising the telescopic arm device. The telescopic arm device comprises a basic arm (20) and a plurality of telescopic arm sections which are sequentially sleeved, and further comprises a multistage telescopic hydraulic cylinder (10), the stage number of the multistage telescopic hydraulic cylinder (10) is as same as the telescopic arm sections in number, one end of the multistage telescopic hydraulic cylinder (10) is connected to the basic arm (20) while the other end of the multistage telescopic hydraulic cylinder (10) is connected to the last telescopic arm section in the multistage telescopic arms, and various stages of cylinder barrels positioned between the two ends of the multistage telescopic hydraulic cylinder (10) are connected with the corresponding telescopic arm sections respectively. The corresponding telescopic arm sections are selectively extendable by extending the cylinder barrels and piston rods out, and the sectional dimension of each telescopic arm section at each stage is uniform in change so that determinative hoisting capability of the telescopic arms in strength can be given to full play. The telescopic arm device is simple in structure, convenient in operation, high in reliability and easy in mounting, demounting and maintenance.
Description
Technical field
The utility model relates to hoisting crane, particularly, relates to a kind of telescopic boom device and the hoisting crane that comprises this telescopic boom device of hoisting crane.
Background technology
Telescopic arm crane is provided with multistage (more piece) telescopic boom.
In medium and small tonnage telescopic arm crane, three joint arms adopt a telescopic oil cylinder and to overlap the telescoping mechanism that stretches out and pull back the steel rope composition usually; Four joint arms telescopic oil cylinders 1 of common employing and the telescoping mechanism (as shown in Figure 1) that two covers are flexible and the wire rope device 2 of pulling back is formed, or adopt two telescopic oil cylinders and to overlap the telescoping mechanism that stretches out and pull back the steel rope composition; Five joint arms adopt the telescoping mechanism (as shown in Figure 2) that two telescopic oil cylinders 1 and two condoms are stretched out and the wire rope device 2 of pulling back is formed usually.When carrying out the telescopic boom operation through telescopic oil cylinder with telescoping mechanism flexible and that the steel rope of pulling back is formed, the arm that is mutually related joint can only stretch out or withdraw simultaneously.But the lifting performance of hoisting crane is by the minimum arm joint decision of cross-sectional plane in the arm joint that is stretched out, thereby when the arm joint of association stretched out simultaneously, lifting performance had limited lifting performance by wherein minimum arm joint decision.In addition, steel rope dismounting and the maintenance difficulty in this telescoping mechanism is bigger.
In the large-tonnage telescopic arm crane, then adopt single-cylinder bolt mechanism to stretch usually, particularly, single-cylinder bolt mechanism comprises a telescopic oil cylinder, bolt mechanism, cylinder pin, arm pin and travel switch etc.The structure of this single-cylinder bolt mechanism and manufacturing process are comparatively complicated, and the installation and processing accuracy requirement is high, poor reliability, unstable properties.In addition, this telescopic boom can only be realized the flexible of limited arm section, thereby telescopic boom stretches out and time of withdraw is grown, inefficiency.
The utility model content
The purpose of the utility model provides a kind of telescopic boom device (hereinafter to be referred as telescopic boom device) that can control stretch mode, hoisting crane simple in structure flexibly.
To achieve these goals; The utility model provides a kind of telescopic boom device of hoisting crane; This telescopic boom device comprises sheathed successively basic arm and a plurality of telescopic boom joint, and wherein, said telescopic boom device also comprises the multi-stage expansion hydraulic ram; The progression of this multi-stage expansion hydraulic ram is identical with the quantity of said telescopic boom joint; One end of said multi-stage expansion hydraulic ram is connected in said basic arm, and the other end is connected in last the telescopic boom joint in the said multi-stage expansion arm, and the cylinder barrels at different levels between the two ends of said multi-stage expansion hydraulic ram are connected to corresponding each telescopic boom joint.
Preferably, the piston rod of said multi-stage expansion hydraulic ram is connected in said basic arm, and the end near said piston rod of the cylinder barrels at different levels of said multi-stage expansion hydraulic ram is connected respectively to said many this telescopic boom joints.
Preferably, the quantity of said telescopic boom joint is not less than 3.
The utility model also provides a kind of hoisting crane, and wherein, this hoisting crane comprises the telescopic boom device of the hoisting crane of the utility model.
Through technique scheme, through stretching out cylinder barrels at different levels and piston rod, can realize corresponding each telescopic boom joint select stretch out.Promptly can select to stretch out any one or more telescopic boom joint, can stretch out any brachium.In addition, use the multi-stage expansion hydraulic ram to realize the flexible of telescopic boom joints at different levels, the sectional dimension of telescopic boom joints at different levels is changed evenly, through the energy-conservation load-carrying ability of enough giving full play to telescopic boom in decision aspect the intensity of each telescopic boom of reasonable combination.In addition, the telescopic boom device of the utility model simple in structure, be convenient to the operation, high efficiency.
Other feature and advantage of the utility model will partly specify in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of specification sheets, is used to explain the utility model with the following specific embodiment, but does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the scheme drawing of four joint arm telescoping mechanisms in the explanation prior art;
Fig. 2 is the scheme drawing of five joint arm telescoping mechanisms in the explanation prior art;
Fig. 3 is the structural representation of the telescopic boom device of explanation the utility model.
Description of reference numerals
1: telescopic oil cylinder 2: the flexible and wire rope device of pulling back
10: multistage hydraulic cylinder 11: piston rod
12: one-level cylinder barrel 13: 14: three grades of cylinder barrels of secondary cylinder barrel
20: basic arm 30: one-level telescopic boom joint 40: secondary telescopic boom joint
50: three grades of telescopic boom joints
The specific embodiment
Be elaborated below in conjunction with the specific embodiment of accompanying drawing to the utility model.Should be understood that the specific embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.
In the utility model, not do under the situation of opposite explanation, the noun of locality of use typically refers to reference to upper and lower, left and right shown in the drawings like " upper and lower, left and right "; " inside and outside " is meant inside and outside with respect to the profile of each parts itself.
An aspect according to the utility model; A kind of telescopic boom device of hoisting crane is provided; This telescopic boom device comprises sheathed successively basic arm 20 and a plurality of telescopic boom joints, and wherein, said telescopic boom device also comprises multi-stage expansion hydraulic ram 10; The progression of this multi-stage expansion hydraulic ram 10 is identical with the quantity of said telescopic boom joint; One end of said multi-stage expansion hydraulic ram 10 is connected in said basic arm 20, and the other end is connected in last the telescopic boom joint in the said multi-stage expansion arm, and the cylinder barrels at different levels between the two ends of said multi-stage expansion hydraulic ram 10 are connected to corresponding each telescopic boom joint.
Through cylinder barrels at different levels and the piston rod 11 that stretches out multi-stage expansion hydraulic ram 10, can realize corresponding telescopic boom at different levels joint select stretch out.Wherein, can select to stretch out one or more in cylinder barrels at different levels and the piston rod 11, thus the number of the telescopic boom that control is stretched out joint and order.In addition, use multi-stage expansion hydraulic ram 10 to realize the flexible of telescopic boom joints at different levels, the sectional dimension of telescopic boom joints at different levels is changed evenly, through the energy-conservation load-carrying ability of enough giving full play to telescopic boom in decision aspect the intensity of each telescopic boom of reasonable combination.
Wherein, multi-stage expansion hydraulic ram 10 can adopt the multi-stage expansion hydraulic ram of existing arbitrarily suitable model, and the utility model does not limit this.
In addition, the telescopic boom device of the utility model can provide enough intensity, goes for the telescopic arm crane of various tonnages, and can stretch easily and quickly with simple structure.
In the preferred implementation of the utility model; As shown in Figure 3; Can make the piston rod 11 of said multi-stage expansion hydraulic ram be connected in said basic arm 20, the end near said piston rod 11 of the cylinder barrels at different levels of said multi-stage expansion hydraulic ram 10 is connected respectively to said many this telescopic boom joints.Certainly, under the situation of convenient layout hydraulic tubing, also can the afterbody cylinder barrel be connected in basic arm 20, and make piston rod 11 be connected to afterbody telescopic boom joint.
Preferably, the quantity of said telescopic boom joint is not less than 3.Describe with the embodiment that comprises 3 joint telescopic boom joints shown in Figure 3 below.Wherein, the telescopic boom joint comprises one-level telescopic boom joint 30,40 and three grades of telescopic boom joints 50 of secondary telescopic boom joint, and correspondingly, multi-stage expansion hydraulic ram 10 comprises one-level cylinder barrel 12, secondary cylinder barrel 13 and three grades of cylinder barrels 14.The end of piston rod 11 is connected to basic arm 20, and the end near piston rod 11 of one-level cylinder barrel 12, secondary cylinder barrel 13 and three grades of cylinder barrels 14 is connected respectively to one-level telescopic boom joint 30,40 and three grades of telescopic boom joints 50 of secondary telescopic boom joint.It will be understood by those skilled in the art that; Pass through hydraulic efficiency pressure system; Can control plunger bar 11, one or more flexible in any order in one-level cylinder barrel 12, secondary cylinder barrel 13 and the three grades of cylinder barrels 14, thereby correspondingly make one or more flexible in any order in one-level telescopic boom joint 30,40 and three grades of telescopic booms joints 50 of secondary telescopic boom joint.
According to the utility model on the other hand, a kind of hoisting crane is provided, wherein, this hoisting crane comprises the telescopic boom device of the hoisting crane of the utility model.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned embodiment; In the technical conceive scope of the utility model, can carry out multiple simple variant to the technical scheme of the utility model, these simple variant all belong to the protection domain of the utility model.
Need to prove that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible array modes.
In addition, also can carry out combination in any between the various embodiment of the utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.
Claims (4)
1. the telescopic boom device of a hoisting crane; This telescopic boom device comprises sheathed successively basic arm (20) and a plurality of telescopic boom joint; It is characterized in that; Said telescopic boom device also comprises multi-stage expansion hydraulic ram (10), and the progression of this multi-stage expansion hydraulic ram (10) is identical with the quantity of said telescopic boom joint, and an end of said multi-stage expansion hydraulic ram (10) is connected in said basic arm (20); The other end is connected in last telescopic boom joint in the said multi-stage expansion arm, and the cylinder barrels at different levels that are positioned between the two ends of said multi-stage expansion hydraulic ram (10) are connected to corresponding each telescopic boom joint.
2. the telescopic boom device of hoisting crane according to claim 1; It is characterized in that; The piston rod of said multi-stage expansion hydraulic ram (11) is connected in said basic arm (20), and the end near said piston rod (11) of the cylinder barrels at different levels of said multi-stage expansion hydraulic ram (10) is connected respectively to said many this telescopic boom joints.
3. the telescopic boom device of hoisting crane according to claim 1 and 2 is characterized in that, the quantity of said telescopic boom joint is not less than 3.
4. a hoisting crane is characterized in that, this hoisting crane comprises the telescopic boom device according to any described hoisting crane among the claim 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205694472U CN202400760U (en) | 2011-12-30 | 2011-12-30 | Crane and telescopic arm device of same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205694472U CN202400760U (en) | 2011-12-30 | 2011-12-30 | Crane and telescopic arm device of same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202400760U true CN202400760U (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205694472U Expired - Fee Related CN202400760U (en) | 2011-12-30 | 2011-12-30 | Crane and telescopic arm device of same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202400760U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663194A (en) * | 2013-12-11 | 2014-03-26 | 中联重科股份有限公司 | Telescopic boom and engineering machine |
| CN105384091A (en) * | 2015-12-31 | 2016-03-09 | 徐州重型机械有限公司 | Telescopic boom structure with a multilevel independent telescopic cylinder and crane |
| CN105417411A (en) * | 2015-12-31 | 2016-03-23 | 徐州重型机械有限公司 | Telescopic boom structure based on multi-stage oil cylinder and crane |
| CN106006412A (en) * | 2016-06-06 | 2016-10-12 | 梁协铭 | Eight-section lazy arm for crane |
-
2011
- 2011-12-30 CN CN2011205694472U patent/CN202400760U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663194A (en) * | 2013-12-11 | 2014-03-26 | 中联重科股份有限公司 | Telescopic boom and engineering machine |
| CN103663194B (en) * | 2013-12-11 | 2016-01-20 | 中联重科股份有限公司 | Telescopic boom and construction machinery and equipment |
| CN105384091A (en) * | 2015-12-31 | 2016-03-09 | 徐州重型机械有限公司 | Telescopic boom structure with a multilevel independent telescopic cylinder and crane |
| CN105417411A (en) * | 2015-12-31 | 2016-03-23 | 徐州重型机械有限公司 | Telescopic boom structure based on multi-stage oil cylinder and crane |
| CN106006412A (en) * | 2016-06-06 | 2016-10-12 | 梁协铭 | Eight-section lazy arm for crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20151230 |
|
| EXPY | Termination of patent right or utility model |