CN111675119B - Telescopic arm of crane and crane - Google Patents
Telescopic arm of crane and crane Download PDFInfo
- Publication number
- CN111675119B CN111675119B CN202010585143.9A CN202010585143A CN111675119B CN 111675119 B CN111675119 B CN 111675119B CN 202010585143 A CN202010585143 A CN 202010585143A CN 111675119 B CN111675119 B CN 111675119B
- Authority
- CN
- China
- Prior art keywords
- arm
- telescopic
- rope
- boom
- fixed
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/703—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by flexible elements, e.g. cables, chains or bands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention provides a crane telescopic boom and a crane, and relates to the technical field of cranes. The telescopic arm of the crane comprises a basic arm, a primary telescopic oil cylinder and a telescopic arm group sleeved in the basic arm, wherein the primary telescopic oil cylinder is arranged in the telescopic arm group and used for driving the telescopic arm group to stretch. The crane adopts the telescopic arm of the crane, so that the power output of the crane in the hoisting process is reduced, the energy consumption is reduced, the weight of the crane is reduced, and the oil consumption of the crane in the running process is reduced.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a telescopic boom of a crane and the crane.
Background
The crane boom is a core component of the crane and is the most important bearing structural member in the hoisting operation of the crane; the weight, strength, rigidity, telescopic efficiency and stable and reliable operation of the crane boom directly affect the service performance of the automobile crane product. Through the technical innovation of the crane boom, the purposes of improving the lifting capacity, the lifting height capacity, the lifting distance capacity and the telescopic efficiency of the crane boom are continuously pursued by various crane manufacturers.
At present, a boom extension mechanism of a product occupying most of the market of cranes adopts a form of adding a rope row to a cylinder, as shown in fig. 1, the boom extension mechanism comprises a first knuckle arm 01, a second knuckle arm 02, a third knuckle arm 03, a fourth knuckle arm 04, a fifth knuckle arm 05, a first telescopic cylinder 06, a second telescopic cylinder 07, a first arm contraction rope 08, a second arm contraction rope 09, a first arm contraction wheel 10, a second arm contraction wheel 11, a first arm extension rope 12, a second arm extension rope 13, a first arm extension wheel 14 and a second arm extension wheel 15, the first telescopic cylinder 06 drives the second knuckle arm 02 to realize extension, and the second telescopic cylinder 07 drives the third knuckle arm 03, the fourth knuckle arm 04 and the fifth knuckle arm 05 to realize simultaneous and synchronous extension. Two primary telescopic oil cylinders are arranged in a telescopic arm of the mechanism, so that the inner structure of the telescopic arm is complex and the self weight is large.
And because the crane boom is a variable cross-section cantilever beam structure, the hoisting weight can be reduced along with the extension of the boom length, but the cross sections of the rope row and the oil cylinder do not change along with the extension of the boom length, however, in practical application, when an object with smaller weight is hoisted by the middle and long boom, the crane can meet the hoisting requirement only by smaller bearing capacity of the rope row and the oil cylinder.
Disclosure of Invention
In order to solve the technical problems, the invention provides a telescopic arm of a crane, which realizes synchronous telescopic of the telescopic arm of the crane by using only one primary telescopic oil cylinder, reduces the dead weight of the telescopic arm of the crane and simplifies the internal structure of the telescopic arm of the crane.
In order to solve the technical problems, the invention also provides a crane using the telescopic arm of the crane provided by the first purpose, and the telescopic arm of the crane provided by the invention has light weight and only uses one primary telescopic oil cylinder, so that the power output of the crane in the hoisting process is reduced, the energy consumption is reduced, the weight of the crane is reduced, and the oil consumption of the crane in the running process is reduced.
In order to achieve the purpose, the telescopic arm of the crane provided by the invention comprises a basic arm, a primary telescopic oil cylinder and a telescopic arm group sleeved in the basic arm, wherein the primary telescopic oil cylinder is arranged in the telescopic arm group and is used for driving the telescopic arm group to stretch.
As a further improvement of the above technical solution:
the telescopic arm of the crane further comprises a rope row mechanism, a first connecting piece and a second connecting piece, wherein the rope row mechanism comprises a first arm extending rope assembly and a first arm retracting rope assembly, and the telescopic arm group comprises a first telescopic arm and a second telescopic arm;
first outrigger rope subassembly includes first outrigger wheel and the first arm rope that stretches, first arm rope subassembly that contracts includes first arm wheel and the first arm rope that contracts, first outrigger wheel is fixed in the bottom of first flexible arm, first arm wheel that contracts is fixed in the top of first flexible arm, first arm rope that stretches with the one end of first arm rope that contracts is fixed in on the basic arm, the other end warp of first arm rope first outrigger wheel with the warp of first arm rope that contracts the other end of first arm wheel links to each other through first connecting piece, the second connecting piece is fixed in on the flexible arm of second, first connecting piece and second connecting piece can carry out fixed connection.
In the telescopic arm of the crane, one end of the first arm extending rope is fixed at the top end of the basic arm, and the other end of the first arm extending rope is wound around the first arm extending wheel and connected with the first connecting piece;
one end of the first arm retracting rope is fixed at the bottom end of the basic arm, and the other end of the first arm retracting rope is wound through the first arm retracting wheel to be connected with the first connecting piece;
the second connecting piece is fixed on the tail part of the second telescopic arm.
The telescopic arm of the crane is characterized in that the first connecting piece and the second connecting piece are both provided with pin holes, and the first connecting piece and the second connecting piece can be connected through pin shafts.
The telescopic arm of the crane further comprises a rod end of a piston rod of the first-stage telescopic oil cylinder connected to the bottom end of the first telescopic arm, and a cylinder barrel of the first-stage telescopic oil cylinder connected to the bottom end of the second telescopic arm.
The telescopic arm of the crane further comprises a rod end of the piston rod hinged to the first telescopic arm through a pin shaft.
In the telescopic arm of the crane, the telescopic arm group further comprises a third telescopic arm and a fourth telescopic arm, and the rope arranging mechanism further comprises a second telescopic arm rope assembly, a third telescopic arm rope assembly, a second telescopic arm rope assembly and a third telescopic arm rope assembly;
the second stretches out the arm rope subassembly with the second contracts the arm rope subassembly set up in first flexible arm with between the flexible arm of third, the third stretch out the arm rope subassembly with the third contracts the arm rope subassembly set up in the second flexible arm with between the flexible arm of fourth.
In the telescopic boom of the crane, the second boom rope assembly comprises a second boom wheel and a second boom rope, the second boom wheel is fixed at the end of the cylinder, one end of the second boom rope is fixed on the first telescopic boom, and the other end of the second boom rope is fixed on the third telescopic boom by passing through the second boom wheel;
the third boom rope assembly comprises a third boom wheel and a third boom rope, the third boom wheel is fixed at the top end of the third telescopic boom, one end of the third boom rope is fixed on the second telescopic boom, and the other end of the third boom rope is fixed on the fourth telescopic boom by passing through the third boom wheel;
the second arm retracting rope assembly comprises a second arm retracting wheel and a second arm retracting rope, the second arm retracting wheel is fixed at the bottom end of the second telescopic arm, one end of the second arm retracting rope is fixed on the first telescopic arm, and the other end of the second arm retracting rope is fixed on the third telescopic arm by winding the second arm retracting wheel;
the third arm retracting rope assembly comprises a third arm retracting wheel and a third arm retracting rope, the third arm retracting wheel is fixed at the bottom end of the third telescopic arm, one end of the third arm retracting rope is fixed at the end part of the cylinder barrel, and the other end of the third arm retracting rope is fixed on the fourth telescopic arm by passing through the third arm retracting wheel.
In the telescopic arm of the crane, one end of the first arm extending rope is fixed at the top end of the basic arm, and the other end of the first arm extending rope is wound around the first arm extending wheel and connected with the first connecting piece;
one end of the second telescopic arm rope is fixed at the bottom end of the first telescopic arm, and the other end of the second telescopic arm rope is fixed at the bottom end of the third telescopic arm by winding the second telescopic arm wheel;
one end of the third boom extension rope is fixed at the bottom end of the second telescopic boom, and the other end of the third boom extension rope is fixed at the bottom end of the fourth telescopic boom by winding the third boom extension wheel;
one end of the first arm retracting rope is fixed at the bottom end of the basic arm, and the other end of the first arm retracting rope is wound through the first arm retracting wheel to be connected with the first connecting piece;
one end of the second arm retracting rope is fixed at the top end of the first telescopic arm, and the other end of the second arm retracting rope is fixed at the bottom end of the third telescopic arm by winding the second arm retracting wheel;
one end of the third arm retracting rope is fixed to the top end of the cylinder barrel, and the other end of the third arm retracting rope is fixed to the top end of the fourth telescopic arm through the third arm retracting wheel in a winding mode.
To achieve the above object, the present invention also provides a crane, comprising:
the telescopic arm of the crane, and
the crane comprises a machine body, wherein the telescopic arm of the crane is mounted on the machine body.
The invention has the beneficial effects that:
the telescopic arm of the crane comprises a basic arm, a telescopic oil cylinder and a telescopic arm group sleeved in the basic arm, wherein the telescopic oil cylinder is a primary telescopic oil cylinder which is arranged in the telescopic arm group and used for driving the telescopic arm group to stretch. The telescopic arm of the crane only uses one-level telescopic oil cylinder to realize synchronous telescopic of the telescopic arm of the crane, the dead weight of the telescopic arm of the crane is reduced, the internal structure of the telescopic arm of the crane is simplified, the whole telescopic process can be kept to be high in stability and reliability, the problems that a plurality of one-level telescopic oil cylinders and pipelines thereof are inconvenient to install and maintain and high in cost can be avoided, the telescopic arm of the crane is relatively simple in structure, and the crane is more reliable in operation.
The invention also provides a crane, which comprises the crane telescopic arm and a crane body, wherein the crane telescopic arm is arranged on the crane body. Because the telescopic arm of the crane provided by the application has light weight, and only one primary telescopic oil cylinder is used, the power output of the crane in the hoisting process is reduced, so that the energy consumption is reduced, the weight of the crane is reduced, and the oil consumption of the crane in the running process is reduced.
In summary, the crane telescopic boom and the crane of the present invention have the advantages and practical values, and are innovative in similar products without similar methods disclosed or used, thereby producing a practical and useful effect.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 shows a schematic diagram of a telescopic boom of a crane in the prior art;
FIG. 2 shows a schematic structural diagram of a telescopic boom of a crane according to an embodiment of the invention;
FIG. 3 is a schematic structural view of the telescopic boom of the crane according to the embodiment of the invention when the second telescopic boom, the third telescopic boom and the fourth telescopic boom are extended;
fig. 4 shows a schematic structural diagram of the crane telescopic boom according to the embodiment of the invention when the first telescopic boom, the second telescopic boom, the third telescopic boom and the fourth telescopic boom are extended.
Description of the main element symbols:
01-first jointed arm 01; 02-second arm; 03-third arm; 04-fourth arm section; 05-fifth arm section; 06-a first telescopic cylinder; 07-a second telescoping cylinder; 08-first boom retraction cord; 09-a second arm retracting rope; 10-a first arm retracting wheel; 11-a second arm retracting wheel; 12-a first arm-extending rope; 13-a second arm-extending rope; 14-a first arm-extending wheel; 15-a second arm extending wheel;
100-a base arm; 200-a first telescopic arm; 300-a second telescopic arm; 400-a third telescopic arm; 500-a fourth telescoping arm; 600-first-stage telescopic oil cylinder; 610-a piston rod; 620-cylinder; 630-a bracket; 700-rope arrangement mechanism; 710-a first boom cord assembly; 711-a first arm-extending wheel; 712-a first boom cord; 720-a second boom cord assembly; 721-a second boom wheel; 722-a second arm extension cord; 730-a third boom cord assembly; 731-third arm-extending wheel; 732-a third arm-extending rope; 740-a first boom retraction cord assembly; 741-a first boom wheel; 742-a first boom retraction cord; 750-a second boom retraction cord assembly; 751-a second arm retracting wheel; 752-second boom retraction cord; 760-a third boom retraction cord assembly; 761-third boom retraction wheel; 762-third boom retraction cord; 800-a first connector; 900-a second connector; 1000-pin shaft.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example one
Referring to fig. 2, the telescopic boom of the crane of the present embodiment includes a basic boom 100, a first telescopic boom 200, a second telescopic boom 300, a third telescopic boom 400, a fourth telescopic boom 500, a primary telescopic cylinder 600, and a rope arranging mechanism 700, which are sequentially sleeved in the basic boom 100.
The rope row mechanism 700 comprises a first arm extending rope assembly 710, a second arm extending rope assembly 720, a third arm extending rope assembly 730, a first arm retracting rope assembly 740, a second arm retracting rope assembly 750 and a third arm retracting rope assembly 760, the primary telescopic oil cylinder 600 comprises a piston rod 610 and a cylinder barrel 620, the rod end of the piston rod 610 is connected to the bottom end of the first telescopic arm 200, and the cylinder barrel 620 is connected to the bottom end of the second telescopic arm 300.
A first boom extension cord assembly 710 and a first boom retraction cord assembly 740 are disposed between the base arm 100 and the second telescopic arm 300, a second boom extension cord assembly 720 and a second boom retraction cord assembly 750 are disposed between the first telescopic arm 200 and the third telescopic arm 400, and a third boom extension cord assembly 730 and a third boom retraction cord assembly 760 are disposed between the second telescopic arm 300 and the fourth telescopic arm 500.
The first arm extension rope assembly 710 includes a first arm extension wheel 711 and a first arm extension rope 712, the first arm extension wheel 711 is fixed to the bottom end of the first telescopic arm 200, one end of the first arm extension rope 712 is fixed to the base arm 100, and the other end of the first arm extension rope 712 is fixed to the second telescopic arm 300 by passing through the first arm extension wheel 711.
The second arm-extending rope assembly 720 includes a second arm-extending wheel 721 and a second arm-extending rope 722, the second arm-extending wheel 721 is fixed at the end of the cylinder 620, one end of the second arm-extending rope 722 is fixed on the first telescopic arm 200, and the other end of the second telescopic rope 722 is fixed on the third telescopic arm 400 by passing through the second arm-extending wheel 721.
The third arm extension rope assembly 730 comprises a third arm extension wheel 731 and a third arm extension rope 732, the third arm extension wheel 731 is fixed on the top end of the third telescopic arm 400, one end of the third arm extension rope 732 is fixed on the second telescopic arm 300, and the other end of the third arm extension rope 732 is fixed on the fourth telescopic arm 500 by passing through the third arm extension wheel 731.
The first arm retracting rope assembly 740 includes a first arm retracting wheel 741 and a first arm retracting rope 742, the first arm retracting wheel 741 is fixed to the top end of the first telescopic arm 200, one end of the first arm retracting rope 742 is fixed to the base arm 100, and the other end of the first arm retracting rope 742 is fixed to the second telescopic arm 300 by passing around the first arm retracting wheel 741.
The second arm retracting rope assembly 750 includes a second arm retracting wheel 751 and a second arm retracting rope 752, the second arm retracting wheel 751 is fixed to the bottom end of the second telescopic arm 300, one end of the second arm retracting rope 752 is fixed to the first telescopic arm 200, and the other end of the second arm retracting rope 752 is fixed to the third telescopic arm 400 by passing through the second arm retracting wheel 751.
The third arm retracting rope assembly 760 includes a third arm retracting wheel 761 and a third arm retracting rope 762, the third arm retracting wheel 761 is fixed to the bottom end of the third telescopic arm 400, one end of the third arm retracting rope 762 is fixed to the end of the cylinder 620, and the other end of the third arm retracting rope 762 is fixed to the fourth telescopic arm 500 by passing through the third arm retracting wheel 761.
The telescopic principle of the telescopic arm of the crane provided by the embodiment of the application is described as follows:
1) the arm extending principle is as follows:
the rod end of the piston rod 610 of the primary telescopic cylinder 600 is fixedly connected to the bottom end of the first telescopic arm 200, when the rodless chamber is filled with oil, the cylinder 620 extends out relative to the piston rod 610, the cylinder 620 is fixed at the bottom end of the second telescopic arm 300 to drive the second telescopic arm 300 to extend out, the first arm extending wheel 711 is fixed on the first telescopic arm 200, one end of the first arm extending rope 712 is fixed on the basic arm 100, the other end of the first arm extending rope 712 is fixed on the second telescopic arm 300 by winding the first arm extending wheel 711, because the total length of the first arm-extending rope 712 is fixed, the first arm-extending rope 712 drives the first telescopic arm 200 to extend synchronously, the second arm-extending wheel 721 fixed at the end of the cylinder 620 extends synchronously, the second arm-extending rope 722 drives the third telescopic arm 400 to extend synchronously, similarly, the third arm-extending wheel 731 fixed at the top end of the third telescopic arm 400 extends synchronously, and the third arm-extending rope 732 drives the fourth telescopic arm 500 to extend synchronously.
2) The arm contraction principle:
when oil enters the rod cavity, the cylinder 620 retracts relative to the piston rod 610 to drive the second telescopic arm 300 to retract, the first arm retracting wheel 741 is fixed on the first telescopic arm 200, one end of the first arm retracting rope 742 is fixed on the basic arm 100, the other end of the first arm retracting rope 742 is fixed on the second telescopic arm 300 through the first arm retracting wheel 741, because the total length of the first arm retracting rope 742 is fixed, the first arm retracting rope 742 drives the first telescopic arm 200 to retract synchronously, similarly, the second arm retracting rope 752 drives the third telescopic arm 400 to retract synchronously, and the third arm retracting rope 762 drives the fourth telescopic arm 500 to retract synchronously.
Compared with the prior art, the telescopic arm of the crane generally needs to be provided with two modes of 600 cylinders of the one-level telescopic oil cylinder, the synchronous stretching of five sections of arms is controlled by adopting the mode of adding the rope row assembly to the one-level telescopic oil cylinder 600, the dead weight of the telescopic arm of the crane is reduced, the internal structure of the telescopic arm of the crane is simplified, the whole telescopic process can be kept to be higher in stability and reliability, the problems that a plurality of single-level telescopic oil cylinders and pipelines thereof are inconvenient to install and maintain and have higher cost can be avoided, the telescopic arm of the crane is relatively simple in structure, and the operation is more reliable.
The telescopic arm of the crane further comprises a first connecting piece 800 and a second connecting piece 900, one end of a first arm extending rope 712 and one end of a first arm contracting rope 742 are fixed on the basic arm 100, the other end of the first arm extending rope 712, which is wound through a first arm extending wheel 711, is connected with the other end of the first arm contracting wheel 741, which is wound through the first arm contracting wheel 742, through the first connecting piece 800, the second connecting piece 900 is fixed on the second telescopic arm 300, and the first connecting piece 800 and the second connecting piece 900 can be fixedly connected.
Referring to fig. 3, when three sections of arms are required to extend for hoisting, the first connecting member 800 is not fixedly connected to the second connecting member 900, the cylinder 620 of the first-stage telescopic cylinder 600 extends, the first telescopic arm 200 does not extend synchronously therewith, and only the third telescopic arm 400 and the fourth telescopic arm 500 extend synchronously therewith.
Referring to fig. 4, when four sections of boom are required to extend for hoisting, the first connecting member 800 is fixedly connected to the second connecting member 900, the cylinder 620 of the first-stage telescopic cylinder 600 extends, the first telescopic boom 200 extends synchronously therewith, and the third telescopic boom 400 and the fourth telescopic boom 500 extend synchronously therewith.
In the telescopic arm of the crane provided by the present application, one end of the first arm extension rope 712 is fixed at the top end of the basic arm 100, and the other end of the first arm extension rope 712 is connected with the first connecting member 800 by passing through the first arm extension wheel 711.
One end of the first arm-retracting rope 742 is fixed to the bottom end of the base arm 100, and the other end of the first arm-retracting rope 742 is connected to the first link 800 via a first arm-retracting wheel 741.
The second link 900 is fixed to the rear portion of the second telescopic arm 300.
In the telescopic arm of the crane provided by the present application, one end of the second telescopic arm rope 722 is fixed to the bottom end of the first telescopic arm 200, and the other end of the second telescopic rope 722 is fixed to the bottom end of the third telescopic arm 400 by passing through the second telescopic arm wheel 721.
One end of the third boom extension rope 732 is fixed to the bottom end of the second telescopic boom 300, and the other end of the third boom extension rope 732 is fixed to the bottom end of the fourth telescopic boom 500 by being wound around the third boom extension wheel 731.
One end of the second boom extension cord 752 is fixed to the top end of the first telescopic boom 200, and the other end of the second boom extension cord 752 is fixed to the bottom end of the third telescopic boom 400 by passing around a second boom extension wheel 751.
One end of the third arm-retracting rope 762 is fixed to the end of the cylinder 620, and the other end of the third arm-retracting rope 762 is fixed to the top end of the fourth telescopic arm 500 by passing around the third arm-retracting wheel 761.
Because the space between the arm plate of the basic arm 100 and the arm plate of the first telescopic arm 200 and the arm plate of the second telescopic arm 300 is limited, one end of the first arm extension rope 712 is fixed at the top end of the basic arm 100, and the other end of the first arm extension rope 712 passes through the first arm extension wheel 711 and the first connecting piece 800, so that the installation and maintenance of the first arm extension rope 712 are facilitated.
Similarly, because the first-stage telescopic cylinder 600 is installed inside the third telescopic arm 400, the inner space is limited, one end of the second arm-extending rope 722 is fixed at the bottom end of the first telescopic arm 200, and the other end of the second arm-extending rope 722 is fixed at the bottom end of the third telescopic arm 400 through the second arm-extending wheel 721, so that the second arm-extending rope 722 can be conveniently installed and maintained.
Similarly, since the space between the arm plate of the third telescopic arm 400 and the arm plate of the fourth telescopic arm 500 is limited, one end of the third arm extending rope 732 is fixed to the bottom end of the second telescopic arm 300, and the other end of the third arm extending rope 732 is fixed to the bottom end of the fourth telescopic arm 500 through the third arm extending wheel 731, so as to facilitate installation and maintenance of the third arm extending rope 732.
Similarly, since the space between the arm plate of the first telescopic arm 200 and the arm plate of the second telescopic arm 300 is limited, one end of the first arm-retracting rope 742 is fixed to the bottom end of the base arm 100, and the other end of the first arm-retracting rope 742 is connected to the first connecting member 800 via the first arm-retracting wheel 741, which facilitates installation and maintenance of the first arm-retracting rope 742.
Similarly, since the space between the arm plate of the first telescopic arm 200 and the arm plate of the second telescopic arm 300 is limited, one end of the second arm retracting rope 752 is fixed to the top end of the first telescopic arm 200, and the other end of the second arm retracting rope 752 is fixed to the bottom end of the third telescopic arm 400 by the second arm retracting wheel 751, so that the second arm retracting rope 752 can be conveniently installed and maintained.
Similarly, because the space between the arm plate of the third telescopic arm 400 and the arm plate of the fourth telescopic arm 500 is limited, one end of the third arm retracting rope 762 is fixed at the bottom end of the second telescopic arm 300, and the other end of the third arm retracting rope 762 is fixed at the bottom end of the fourth telescopic arm 500 by the third arm retracting wheel 761, so that the third arm retracting rope 762 can be conveniently installed and maintained.
In the telescopic boom of the crane of the embodiment, the first connecting piece 800 and the second connecting piece 900 are both connecting pieces provided with pin holes, and the first connecting piece 800 and the second connecting piece 900 can be connected through a pin shaft.
When three sections of arms are required to extend for hoisting, the pin shaft 1000 is pulled out from the pin holes of the first connecting piece 800 and the second connecting piece 900, the cylinder barrel 620 of the first-stage telescopic cylinder 600 extends, the first telescopic arm 200 does not extend synchronously therewith, and only the third telescopic arm 400 and the fourth telescopic arm 500 extend synchronously therewith.
When the four-section boom is required to extend for hoisting, the pin shaft 1000 is inserted into the pin holes of the first connecting piece 800 and the second connecting piece 900, the cylinder 620 of the first-stage telescopic cylinder 600 extends, the first telescopic boom 200 extends synchronously therewith, and the third telescopic boom 400 and the fourth telescopic boom 500 extend synchronously therewith.
In the telescopic arm of the crane of the embodiment, a bracket is mounted at the end of the cylinder 620, and the second arm wheel 721 is fixed on the bracket 630. A bracket 630 is mounted at the end of the cylinder 620 to facilitate the mounting of the second arm wheel 721. In the telescopic arm of the crane of this embodiment, the rod end of the piston rod 610 is hinged to the first telescopic arm 200 through a pin. The hinge structure is simple, and relative rotation can be realized.
Example two
The embodiment also provides a crane, which comprises the telescopic arm of the crane provided by the embodiment I and a crane body, wherein the crane telescopic arm is arranged on the crane body.
In the crane of the embodiment, the primary telescopic oil cylinder 600 of the telescopic arm of the crane is connected with the hydraulic system of the crane body.
The telescopic arm of the crane provided by the first embodiment is light in weight, and only one primary telescopic oil cylinder 600 is used, so that the power output of the crane in the hoisting process is reduced, the energy consumption is reduced, the weight of the crane is reduced, and the oil consumption of the crane in the running process is reduced.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A telescopic arm of a crane is characterized by comprising a basic arm, a primary telescopic oil cylinder and a telescopic arm group sleeved in the basic arm, wherein the primary telescopic oil cylinder is arranged in the telescopic arm group and used for driving the telescopic arm group to stretch;
the rope arrangement mechanism comprises a first arm extending rope assembly and a first arm retracting rope assembly, and the telescopic arm group comprises a first telescopic arm and a second telescopic arm;
first outrigger rope subassembly includes first outrigger wheel and the first arm rope that stretches, first arm rope subassembly that contracts includes first arm wheel and the first arm rope that contracts, first outrigger wheel is fixed in the bottom of first flexible arm, first arm wheel that contracts is fixed in the top of first flexible arm, first arm rope that stretches with the one end of first arm rope that contracts is fixed in on the basic arm, the other end warp of first arm rope first outrigger wheel with the warp of first arm rope that contracts the other end of first arm wheel links to each other through first connecting piece, the second connecting piece is fixed in on the flexible arm of second, first connecting piece and second connecting piece can carry out fixed connection.
2. The telescopic arm of crane as claimed in claim 1, wherein one end of the first jib rope is fixed to the top end of the basic arm, and the other end of the first jib rope is connected to the first connecting member by passing around the first jib wheel;
one end of the first arm retracting rope is fixed at the bottom end of the basic arm, and the other end of the first arm retracting rope is wound through the first arm retracting wheel to be connected with the first connecting piece;
the second connecting piece is fixed on the tail part of the second telescopic arm.
3. The telescopic crane jib according to claim 2 wherein said first link member and said second link member are provided with pin holes, said first link member and said second link member being connectable by a pin.
4. The telescopic arm of a crane as claimed in claim 1, wherein the rod end of the piston rod of the primary telescopic cylinder is connected to the bottom end of the first telescopic arm, and the cylinder barrel of the primary telescopic cylinder is connected to the bottom end of the second telescopic arm.
5. The telescopic crane jib according to claim 4 wherein the rod end of said piston rod is hinged to said first telescopic jib by a pin.
6. The telescopic boom of crane according to claim 4, wherein the telescopic boom group further comprises a third telescopic boom and a fourth telescopic boom, the rope ranging mechanism further comprises a second telescopic boom rope assembly, a third telescopic boom rope assembly, a second telescopic boom rope assembly and a third telescopic boom rope assembly, the second telescopic boom rope assembly and the second telescopic boom rope assembly are disposed between the first telescopic boom and the third telescopic boom, and the third telescopic boom rope assembly are disposed between the second telescopic boom and the fourth telescopic boom.
7. The telescopic arm of crane as claimed in claim 6, wherein the second boom rope assembly comprises a second boom wheel and a second boom rope, the second boom wheel is fixed to the end of the cylinder, one end of the second boom rope is fixed to the first telescopic arm, and the other end of the second boom rope is fixed to the third telescopic arm by passing around the second boom wheel;
the third boom rope assembly comprises a third boom wheel and a third boom rope, the third boom wheel is fixed at the top end of the third telescopic boom, one end of the third boom rope is fixed on the second telescopic boom, and the other end of the third boom rope is fixed on the fourth telescopic boom by passing through the third boom wheel;
the second arm retracting rope assembly comprises a second arm retracting wheel and a second arm retracting rope, the second arm retracting wheel is fixed at the bottom end of the second telescopic arm, one end of the second arm retracting rope is fixed on the first telescopic arm, and the other end of the second arm retracting rope is fixed on the third telescopic arm by winding the second arm retracting wheel;
the third arm retracting rope assembly comprises a third arm retracting wheel and a third arm retracting rope, the third arm retracting wheel is fixed at the bottom end of the third telescopic arm, one end of the third arm retracting rope is fixed at the end part of the cylinder barrel, and the other end of the third arm retracting rope is fixed on the fourth telescopic arm by passing through the third arm retracting wheel.
8. The telescopic arm of crane as claimed in claim 7, wherein one end of the first jib rope is fixed to the top end of the basic arm, and the other end of the first jib rope is connected to the first connecting member by passing around the first jib wheel;
one end of the second boom extension rope is fixed at the bottom end of the first telescopic boom, and the other end of the second boom extension rope is fixed at the bottom end of the third telescopic boom by winding the second boom extension wheel;
one end of the third boom extension rope is fixed at the bottom end of the second telescopic boom, and the other end of the third boom extension rope is fixed at the bottom end of the fourth telescopic boom by winding the third boom extension wheel;
one end of the first arm retracting rope is fixed at the bottom end of the basic arm, and the other end of the first arm retracting rope is wound through the first arm retracting wheel to be connected with the first connecting piece; one end of the second arm retracting rope is fixed at the top end of the first telescopic arm, and the other end of the second arm retracting rope is fixed at the bottom end of the third telescopic arm by winding the second arm retracting wheel;
one end of the third arm retracting rope is fixed to the top end of the cylinder barrel, and the other end of the third arm retracting rope is fixed to the top end of the fourth telescopic arm through the third arm retracting wheel in a winding mode.
9. A crane, comprising: the telescopic crane boom as claimed in any one of claims 1 to 8, and a body to which said telescopic crane boom is mounted.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010585143.9A CN111675119B (en) | 2020-06-23 | 2020-06-23 | Telescopic arm of crane and crane |
| PCT/CN2021/101521 WO2021259254A1 (en) | 2020-06-23 | 2021-06-22 | Crane telescopic boom and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010585143.9A CN111675119B (en) | 2020-06-23 | 2020-06-23 | Telescopic arm of crane and crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111675119A CN111675119A (en) | 2020-09-18 |
| CN111675119B true CN111675119B (en) | 2022-03-22 |
Family
ID=72456386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010585143.9A Active CN111675119B (en) | 2020-06-23 | 2020-06-23 | Telescopic arm of crane and crane |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111675119B (en) |
| WO (1) | WO2021259254A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111675119B (en) * | 2020-06-23 | 2022-03-22 | 三一汽车起重机械有限公司 | Telescopic arm of crane and crane |
| CN114458913A (en) * | 2022-01-27 | 2022-05-10 | 淄博朗达复合材料有限公司 | Pulley principle lifting rod |
| CN116040508B (en) * | 2022-12-02 | 2023-11-03 | 河南骏通车辆有限公司 | Rope extension structure, telescopic boom crane and hoisting method thereof |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB996853A (en) * | 1964-04-21 | 1965-06-30 | Martin Haganes | Improvements in or relating to crane boom constructions |
| DE19921104A1 (en) * | 1999-05-04 | 2000-11-16 | Mannesmann Ag | Telescopic boom for cranes |
| CN101575075A (en) * | 2009-06-05 | 2009-11-11 | 三一汽车制造有限公司 | Truck crane and multisection synchronous telescopic boom device thereof |
| CN201694761U (en) * | 2009-12-04 | 2011-01-05 | 三一汽车制造有限公司 | Main arm telescopic mechanism and automobile crane with same |
| CN102126682B (en) * | 2011-04-11 | 2012-12-26 | 徐州徐工随车起重机有限公司 | Single cylinder synchronous expansion and contraction device with multiple sets of inhaul cables for lorry-mounted crane |
| CN202011707U (en) * | 2011-04-11 | 2011-10-19 | 徐州徐工随车起重机有限公司 | Synchronous arm-body telescopic device with single cylinder and sets of inhaul cables of lorry-mounted crane |
| CN202148151U (en) * | 2011-06-09 | 2012-02-22 | 三一汽车起重机械有限公司 | Automobile crane and multi-section telescopic arm device thereof |
| CN102285598B (en) * | 2011-06-22 | 2013-03-27 | 三一汽车起重机械有限公司 | Multi-section arm telescopic device and crane with same |
| ITMO20120170A1 (en) * | 2012-07-06 | 2014-01-07 | C M C S R L Societa Unipersonal E | TELESCOPIC ARM FOR OPERATING MACHINES |
| CN203767895U (en) * | 2013-12-05 | 2014-08-13 | 三一汽车起重机械有限公司 | Multi-section cantilever crane telescopic mechanism and crane |
| CN206970063U (en) * | 2017-07-23 | 2018-02-06 | 山东鲁班机械科技有限公司 | A kind of crane five-stage telescopic boom |
| CN209259541U (en) * | 2018-12-25 | 2019-08-16 | 济宁市鲁星工程机械集团有限公司 | A kind of five joint arm telescoping mechanism of single cylinder |
| CN111675119B (en) * | 2020-06-23 | 2022-03-22 | 三一汽车起重机械有限公司 | Telescopic arm of crane and crane |
-
2020
- 2020-06-23 CN CN202010585143.9A patent/CN111675119B/en active Active
-
2021
- 2021-06-22 WO PCT/CN2021/101521 patent/WO2021259254A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021259254A1 (en) | 2021-12-30 |
| CN111675119A (en) | 2020-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111675119B (en) | Telescopic arm of crane and crane | |
| CN202080842U (en) | Crane and multi-arm telescoping mechanism thereof | |
| CN113086870B (en) | Telescopic mechanism and crane | |
| CN101575075A (en) | Truck crane and multisection synchronous telescopic boom device thereof | |
| CN202481966U (en) | Suspension arm of crane | |
| CN112282661A (en) | A suspension type rotation drive structure for raise boring machine | |
| CN110054097B (en) | Synchronous telescopic mechanism of lorry-mounted crane | |
| CN115196515A (en) | Multiple-magnification telescopic device and crane | |
| CN115043336A (en) | Multi-pulley telescopic mechanism and crane | |
| CN201209093Y (en) | Crawler telescopic arm hoisting machine | |
| WO2023159752A1 (en) | Single-cylinder multi-section boom telescopic mechanism, boom and crane | |
| CN209890123U (en) | Telescopic arm telescopic device of lorry-mounted crane | |
| CN113086869B (en) | Telescopic mechanism and crane | |
| CN103663194B (en) | Telescopic boom and construction machinery and equipment | |
| CN115057371A (en) | Multi-section-arm telescopic mechanism, crane boom and crane | |
| CN217264311U (en) | Telescopic arm of gantry crane | |
| CN210029820U (en) | Five-section telescopic arm telescopic mechanism of lorry-mounted crane | |
| CN205346686U (en) | Flexible arm structure and hoist with go back to mechanism of contracting | |
| CN217921202U (en) | Multi-section-arm synchronous telescopic mechanism and crane | |
| CN218114840U (en) | Multiple-magnification telescopic device and crane | |
| CN113511600B (en) | Super-lifting counterweight adjusting and connecting device and crane | |
| CN215479523U (en) | Telescopic boom and telescopic boom forklift truck | |
| CN217921203U (en) | Multi-pulley telescopic mechanism and crane | |
| CN115072594A (en) | Multi-section-arm synchronous telescopic mechanism and crane | |
| CN217894951U (en) | Multi-section-arm telescopic mechanism, crane boom and crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |