CN114772478B - Truss arm joint, truss arm and working machine - Google Patents
Truss arm joint, truss arm and working machine Download PDFInfo
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- CN114772478B CN114772478B CN202210254302.6A CN202210254302A CN114772478B CN 114772478 B CN114772478 B CN 114772478B CN 202210254302 A CN202210254302 A CN 202210254302A CN 114772478 B CN114772478 B CN 114772478B
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- Prior art keywords
- truss arm
- half arms
- arms
- piece
- locking
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- 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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
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- 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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/42—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with jibs of adjustable configuration, e.g. foldable
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- 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
- B66C23/68—Jibs foldable or otherwise adjustable in configuration
Abstract
The invention relates to the technical field of engineering machinery and provides a truss arm section, a truss arm and an operation machine, wherein the truss arm section comprises two half arms, the extending directions of the two half arms are parallel to each other, and the distribution directions of the two half arms are perpendicular to the extending directions of the half arms; the connecting assembly is arranged between the two half arms and comprises a locking piece and at least two connecting pieces, two ends of each connecting piece are respectively connected with the two half arms in a rotating mode, the rotating axis is perpendicular to the distribution direction of the two half arms, the locking piece can be switched between a first state and a second state, the connecting pieces can rotate relative to the half arms in the first state, and the locking piece limits the connecting pieces to rotate relative to the half arms in the second state. So set up, switch the locking piece to the first state, through making the connecting piece rotate for half arm, can adjust the distance between two half arms, reduce the holistic horizontal width of truss arm section, solved the limited problem of jib transportation of crawler crane that exists among the prior art.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a truss arm section, a truss arm and a working machine.
Background
The bearing capacity requirements of large-tonnage and ultra-large-tonnage crawler cranes are relatively high, so that the width dimension of the arm support is relatively large. However, since the road transportation regulations have a clear limitation on the width of the transported object, if the width of the boom exceeds the specified limitation, the transportation cost is increased and even transportation is impossible.
Therefore, how to solve the problem of limited boom transportation of the crawler crane in the prior art is an important technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a truss arm section, a truss arm and an operation machine, which are used for solving the defect that the boom transportation of a crawler crane is limited in the prior art.
The invention provides a truss arm segment, comprising:
the two half arms are parallel to each other in the extending direction, and the distribution direction of the two half arms is perpendicular to the extending direction of the half arms;
the connecting assembly is arranged between the two half arms and comprises a locking piece and at least two connecting pieces, two ends of each connecting piece are respectively connected with the two half arms in a rotating mode, a rotating axis is perpendicular to the distribution directions of the two half arms, the locking pieces can be switched between a first state and a second state, the connecting pieces can rotate relative to the half arms in the first state, and the locking pieces limit the connecting pieces to rotate relative to the half arms in the second state.
According to the truss arm joint provided by the invention, two ends of the locking piece are respectively connected with the two half arms, the extending direction of the connecting piece and the extending direction of the half arms are both provided with included angles with the extending direction of the locking piece, and at least one end of the locking piece is detachably connected with the half arms.
According to the truss arm joint provided by the invention, the locking piece is of a rod-shaped structure, and both ends of the locking piece are hinged with the half arm through the first pin shaft;
the connecting piece is in a rod-shaped structure, and two ends of the connecting piece are hinged with the half arms through second pin shafts.
According to the truss arm joint provided by the invention, the opposite sides of the two half arms are provided with the first connecting seat, the first connecting seat is hinged with the locking piece through the first pin shaft, the first end of the first pin shaft is provided with the first limiting structure, the second end of the first pin shaft is provided with the first clamping piece, the first clamping piece is detachably connected with the first pin shaft, and the first limiting structure and the first clamping piece are arranged to limit the first pin shaft from falling off from the first connecting seat and the locking piece.
According to the truss arm joint provided by the invention, the second connecting seat is arranged on one side of the two opposite half arms, the second connecting seat is hinged with the connecting piece through the second pin shaft, the first end of the second pin shaft is provided with the second limiting structure, the second end of the second pin shaft is provided with the second clamping piece, the second clamping piece is detachably connected with the second pin shaft, and the second limiting structure and the second clamping piece are arranged to limit the second pin shaft from falling off from the second connecting seat and the connecting piece.
According to the truss arm segment provided by the invention, two locking pieces are arranged, and the two locking pieces are distributed along the extending direction of the half arm.
According to the truss arm joint provided by the invention, the connecting pieces are perpendicular to the rotation axis of the half arm, the distribution directions of the two half arms and the extension direction of the half arm;
the connecting components are provided with two groups, and the two groups of connecting components are distributed along the direction of the rotating axis of the connecting piece relative to the half arm.
According to the truss arm segment provided by the invention, the half arm comprises:
the two main chords are parallel to each other and are arranged at intervals, and the end parts of the main chords are provided with connecting parts for connecting with the arm sections of the adjacent trusses;
the two first web members are arranged at intervals and are parallel to the main chord member, and the connecting piece and the locking piece are connected with the first web members;
and the plurality of second web members are respectively arranged between the adjacent main chords, between the adjacent first web members and between the adjacent main chords and the first web members.
The invention also provides a truss arm, which comprises the truss arm section.
The invention also provides a working machine comprising the truss arm.
The truss arm section comprises two half arms and a connecting assembly arranged between the two half arms, wherein the connecting assembly comprises at least two connecting pieces and a locking piece, the connecting pieces are arranged between the two half arms and are rotationally connected with the half arms to form a parallelogram structure, and the distance between the two half arms can be adjusted by enabling the connecting pieces to rotate relative to the half arms, so that the transverse width of the whole truss arm section can be adjusted. The locking piece can be switched between the first state and the second state, when the truss arm is assembled, the connecting piece is enabled to rotate to the target position relative to the half arm, and then the locking piece is switched to the second state so as to limit the connecting piece to rotate relative to the half arm, and the stability of a connecting structure between the two half arms is ensured. When the truss arm section is required to be transported, the locking piece is switched to a first state, the connecting piece rotates relative to the half arms, and the truss arm section is folded, so that the distance between the two half arms is reduced, and the overall transverse width of the truss arm section is reduced. The device is arranged in such a way, the transverse dimension of the two half arms is designed according to the width dimension requirement of road transportation regulations on transported objects, and the dimension of the connecting piece is further designed by combining the whole width dimension requirement of the truss arm section, so that the truss arm section can meet the bearing capacity requirement and the road transportation requirement, and the problem of limited boom transportation of the crawler crane in the prior art is solved.
Further, the truss arm according to the present invention has the truss arm segments as described above, and thus has various advantages as described above.
Further, the work machine according to the present invention includes the truss arm as described above, and thus has various advantages as described above.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a truss arm segment in an assembled condition;
FIG. 2 is an enlarged view of I in FIG. 1;
FIG. 3 is a front view of the truss arm segment of FIG. 1;
FIG. 4 is a top view of the truss arm segment of FIG. 1;
FIG. 5 is a side view of the truss arm segment of FIG. 1;
FIG. 6 is a schematic view of the truss arm segment in a shipping configuration provided by the present invention;
fig. 7 is an enlarged view of Y in fig. 6;
FIG. 8 is a front view of the truss arm segment of FIG. 6;
FIG. 9 is a top view of the truss arm segment of FIG. 6;
FIG. 10 is a side view of the truss arm segment of FIG. 6;
FIG. 11 is a schematic view of the structure of a half arm provided by the present invention;
FIG. 12 is a schematic view of the connection structure between two adjacent truss arm segments provided by the present invention;
fig. 13 is an enlarged view of X in fig. 12.
Reference numerals:
1: a half arm; 2: a connecting piece; 3: a locking member; 4: a first pin; 5: a second pin; 6: a first connection base; 7: a first clamping piece; 8: a second connecting seat; 9: a second clamping piece; 10: a main chord; 11: a connection part; 12: a first web member; 13: a second web member; 14: a third pin; 15: and the third clamping piece.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The truss arm segment of the present invention is described below in connection with fig. 1-13.
As shown in fig. 1 to 13, the truss arm segment provided in the embodiment of the present invention includes a connection assembly and two half arms 1, specifically, the extending directions of the two half arms 1 are parallel to each other, and the distribution directions of the two half arms 1 are perpendicular to the extending directions of the half arms 1. There is a space between the two half-arms 1, and a connection assembly is provided between the two half-arms 1.
The connecting assembly comprises a locking piece 3 and at least two connecting pieces 2, wherein two ends of each connecting piece 2 are respectively connected with the two half arms 1 in a rotating way, and the rotating axis is perpendicular to the distribution direction of the two half arms 1. The two half arms 1 have the same structural size, the structural sizes of the connecting pieces 2 are the same, the two half arms 1 and the connecting pieces 2 form a parallelogram structure, and the distance between the two half arms 1 can be adjusted by enabling the connecting pieces 2 to rotate relative to the half arms 1, so that the overall transverse width of the truss arm section can be adjusted.
The locking member 3 can be switched between a first state and a second state, when the locking member 3 is switched to the first state, the connecting member 2 can rotate relative to the half arm 1, and when the locking member 3 is switched to the second state, the locking member 3 restricts the connecting member 2 from rotating relative to the half arm 1.
When the truss arms are assembled, after the connecting piece 2 is rotated to a target position relative to the half arms 1, the locking piece 3 is switched to a second state so as to limit the rotation of the connecting piece 2 relative to the half arms 1 and ensure the stability of the connecting structure between the two half arms 1.
The target position is a position where the distance between the two half arms 1 can be maximized, for example, the extending direction of the link 2 is perpendicular to the extending direction of the half arms 1.
When the truss arm section is required to be transported, the locking piece 3 is switched to a first state, the connecting piece 2 is enabled to rotate relative to the half arms 1, the truss arm section is folded, the distance between the two half arms 1 is reduced, and the overall transverse width of the truss arm section is reduced.
So set up, according to the width size requirement of road transportation regulation to the transportation thing, design the transverse dimension of two half-arms 1 to combine the whole width size requirement of truss arm festival, further design the size of connecting piece 2, make the truss arm festival can satisfy the bearing capacity requirement, can satisfy the road transportation requirement again, solved the limited problem of jib transportation of crawler crane that exists among the prior art.
In the embodiment of the present invention, two ends of the locking member 3 are respectively connected with the two half arms 1, and the extending direction of the connecting member 2 and the extending direction of the half arms 1 have included angles with the extending direction of the locking member 3, and the locking member 3, the half arms 1 and the connecting member 2 can form a triangle structure or a trapezoid structure together to limit the connecting member 2 to rotate relative to the half arms 1, that is, the locking member 3 is in the second state, referring to fig. 1 to 5.
At least one end of the locking member 3 is detachably connected to the half arm 1, so that one end of the locking member 3 is disconnected from the half arm 1, or both ends of the locking member 3 are disconnected from the half arm 1, and the connecting member 2 is allowed to rotate relative to the half arm 1, that is, the locking member 3 is in the first state, referring to fig. 6 to 10 (the second engaging member 9 is not shown in fig. 6 to 10).
That is, by attaching and detaching the locking member 3, the switching between the second state and the first state of the locking member 3 can be realized, and the method has the advantages of simple process, convenient attachment and detachment, and lower manufacturing cost.
After the locking member 3 is removed, it may be placed in the state of fig. 6 by a machine such as a crane.
The number of the above-mentioned connection members 2 is determined according to the length of the extension direction of the half arm 1.
In the embodiment of the invention, two locking pieces 3 are arranged, the two locking pieces 3 are distributed along the extending direction of the half arm 1, and when the truss arm section or the truss arm section is assembled to work, the two locking pieces 3 are used for limiting the relative position between the connecting piece 2 and the half arm 1, so that the connection strength between the two half arms 1 is increased, and the bearing capacity and the stability of the truss arm section are improved. Specifically, two locking pieces 3 may be provided at both ends of the half arm 1, respectively.
In this embodiment, the locking member 3 is configured in a rod-shaped structure, so that two ends of the locking member 3 are hinged to the two half arms 1 through the first pin 4. Correspondingly, the connecting piece 2 is also provided with a rod-shaped structure, so that two ends of the connecting piece 2 are respectively hinged with the two half arms 1 through the second pin shafts 5.
The locking piece 3 and the connecting piece 2 only bear the acting force along the axis direction, which is beneficial to improving the strength and the bearing capacity of the truss arm joint.
In a specific embodiment, a first connecting seat 6 is arranged on one side of the two half arms 1 opposite to each other, a through hole is arranged on the first connecting seat 6, and a corresponding through hole is arranged at the end part of the locking piece 3, so that the first pin shaft 4 passes through the through hole on the first connecting seat 6 and the through hole at the end part of the locking piece 3 at the same time. The first end of the first pin 4 is provided with a first limiting structure, and the first pin 4 penetrates through the first connecting seat 6 and the end part of the locking piece 3 and then is detachably connected with the first clamping piece 7.
Two connecting lug plates are respectively arranged at two ends of the locking piece 3, the two connecting lug plates are parallel to each other, and a space is reserved between the two connecting lug plates for the first connecting seat 6 to extend in.
The first limiting structure may be, but is not limited to, a flange disposed at the first end of the first pin 4.
The first clamping member 7 may be, but is not limited to, a clamping spring.
In a specific embodiment, the first clamping member 7 may be further configured in a pin manner, as shown in fig. 2, a through hole extending radially is disposed at the second end of the first pin 4, the first clamping member 7 is bent into an annular structure, one end of the first clamping member 7 is provided with a hook portion, and the other end passes through the through hole at the second end of the first pin 4 and then is engaged with the hook portion. In this way, the first clamping piece 7 is convenient to assemble and disassemble.
Similarly, a second connecting seat 8 is arranged on one side of the two half arms 1 opposite to each other, a through hole is formed in the second connecting seat 8, and a corresponding through hole is formed in the end portion of the connecting piece 2, so that the second pin shaft 5 passes through the through hole in the second connecting seat 8 and the through hole in the end portion of the connecting piece 2 at the same time. The first end of the second pin shaft 5 is provided with a second limiting structure, and the second pin shaft 5 penetrates through the second connecting seat 8 and the end part of the connecting piece 2 and then is detachably connected with the second clamping piece 9.
Two connecting lug plates are respectively arranged at two ends of the connecting piece 2, the two connecting lug plates are mutually parallel, and a space is reserved between the two connecting lug plates for the second connecting seat 8 to extend in.
The second limiting structure may be, but is not limited to, a flange provided at the first end of the second pin 5.
The second clamping member 9 may be, but is not limited to, a clamping spring. The second fastening member 9 may be provided in the form of a pin, and the structure of the second fastening member is the same as that of the first fastening member 7, and will not be described herein.
In the embodiment of the invention, the connecting pieces 2 are perpendicular to the rotation axis of the half arms 1, the distribution direction of the two half arms 1 and the extending direction of the half arms 1. The two groups of connecting components are distributed along the rotation axis direction of the connecting piece 2 relative to the half arm 1, as shown in fig. 1, so that the structural strength and stability of the truss arm joint can be further increased.
In the embodiment of the present invention, the half arm 1 includes two main chords 10, two first web members 12 and a plurality of second web members 13, as shown in fig. 11, the two main chords 10 are parallel to each other and spaced apart, the two first web members 12 are spaced apart and are parallel to the main chords 10, and a space is provided between the first web members 12 and the main chords 10.
The second web members 13 are provided between the adjacent main chords 10, between the adjacent first web members 12, and between the adjacent main chords 10 and the first web members 12. The end of the second web member 13 is fixedly connected with the main chord member 10, and the end of the second web member 13 is fixedly connected with the first web member 12, specifically, the second web member 13 can be fixed by welding.
The first web members 12 of the two half-arms 1 are connected to the above-mentioned connecting piece 2 and locking piece 3.
At the end of the main chord 10 there is provided a connection 11 for connection with the main chord 10 of an adjacent truss arm section. The structure of two adjacent truss arm segments connected together is shown in fig. 12.
In a specific embodiment, the connecting portion 11 includes a connection lug plate disposed at an end of the main chord member 10, and the end of the main chord member 10 adjacent to the arm section of the truss arm can be hinged together by using the third pin 14.
Specifically, one connecting lug plate is disposed at a first end of the main chord 10, two connecting lug plates are disposed at a second end of the main chord 10, and the two connecting lug plates are distributed at intervals. When two adjacent truss arm sections are connected, the connecting lug plate at the first end of the main chord member 10 of one truss arm section extends into the space between the two connecting lug plates at the second end of the main chord member 10 of the other truss arm section, and the third pin shaft 14 passes through the connecting lug plates of the main chord members 10 of the two adjacent truss arm sections and then is detachably connected with the third clamping piece 15, as shown in fig. 13. The structure of the third pin 14 is the same as that of the first pin 4 and the second pin 5, and the structure of the third clamping member 15 is the same as that of the first clamping member 7 and the second clamping member 9, which are not described herein.
On the other hand, the embodiment of the invention also provides a truss arm, which comprises the truss arm section provided by any embodiment. All advantages of the truss arm segments described above are provided and will not be described in detail herein. The derivation process of the beneficial effects of the truss arm in the embodiment of the present invention is substantially similar to the derivation process of the beneficial effects of the truss arm section described above, and therefore, the description thereof will not be repeated here.
In yet another aspect, an embodiment of the present invention further provides a working machine, including the truss arm in the foregoing embodiment, which has all advantages of the truss arm described above, and is not described herein again. The development of the beneficial effects of the work machine according to the embodiments of the present invention is substantially similar to that of the truss arms described above, and therefore will not be described in detail herein.
The working machine in this embodiment may be a large tonnage and ultra large tonnage crawler crane or the like.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A truss arm segment comprising:
the two half arms, the extending directions of the two half arms are parallel to each other, the distribution directions of the two half arms are perpendicular to the extending directions of the half arms, the half arms comprise two main chords, two first web members and a plurality of second web members, the two main chords are parallel to each other and are arranged at intervals, the two first web members are arranged at intervals and are parallel to the main chords, the second web members are arranged between the adjacent main chords, between the adjacent first web members and between the adjacent main chords and the first web members, the end parts of the main chords are provided with connecting parts used for being connected with the adjacent truss arm sections, and when the two truss arm sections are connected together, only the connecting parts of the main chords of the two truss arm sections are connected;
the connecting assembly is arranged between the two half arms and comprises a locking piece and at least two connecting pieces, two ends of each connecting piece are respectively connected with the first web members of the two half arms in a rotating mode, the rotating axis is perpendicular to the distribution directions of the two half arms, the locking piece can be switched between a first state and a second state, in the first state, the connecting pieces can rotate relative to the half arms, and in the second state, the locking piece limits the connecting pieces to rotate relative to the half arms.
2. The truss arm segment according to claim 1, wherein two ends of the locking member are connected to the two half arms, respectively, and the extending direction of the connecting member and the extending direction of the half arms each have an included angle with the extending direction of the locking member, and at least one end of the locking member is detachably connected to the half arms.
3. The truss arm segment according to claim 1 or 2, wherein the locking member has a rod-shaped structure, and both ends of the locking member are hinged with the half arm through a first pin shaft;
the connecting piece is in a rod-shaped structure, and two ends of the connecting piece are hinged with the half arms through second pin shafts.
4. The truss arm segment of claim 3, wherein two opposite sides of the half arm are provided with first connecting seats, the first connecting seats are hinged to the locking members through first pins, first ends of the first pins are provided with first limiting structures, second ends of the first pins are provided with first clamping members, the first clamping members are detachably connected with the first pins, and the first limiting structures and the first clamping members are arranged to limit the first pins from falling off the first connecting seats and the locking members.
5. The truss arm segment of claim 3, wherein two opposite sides of the half arm are provided with a second connecting seat, the second connecting seat is hinged to the connecting piece through a second pin shaft, a first end of the second pin shaft is provided with a second limiting structure, a second end of the second pin shaft is provided with a second clamping piece, the second clamping piece is detachably connected with the second pin shaft, and the second limiting structure and the second clamping piece are arranged to limit the second pin shaft from falling off from the second connecting seat and the connecting piece.
6. Truss arm segment according to claim 1, wherein two of said locking elements are provided, both of said locking elements being distributed along the extension direction of said half-arms.
7. Truss arm segment according to claim 1, wherein the connecting members are perpendicular to each other with respect to the rotation axis of the half arms, the direction of distribution of the two half arms and the direction of extension of the half arms;
the connecting components are provided with two groups, and the two groups of connecting components are distributed along the direction of the rotating axis of the connecting piece relative to the half arm.
8. A truss arm comprising a truss arm segment according to any of claims 1 to 7.
9. A work machine comprising the truss arm of claim 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210254302.6A CN114772478B (en) | 2022-03-15 | 2022-03-15 | Truss arm joint, truss arm and working machine |
| PCT/CN2022/101588 WO2023173621A1 (en) | 2022-03-15 | 2022-06-27 | Truss arm joint, truss arm and operation machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210254302.6A CN114772478B (en) | 2022-03-15 | 2022-03-15 | Truss arm joint, truss arm and working machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114772478A CN114772478A (en) | 2022-07-22 |
| CN114772478B true CN114772478B (en) | 2023-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210254302.6A Active CN114772478B (en) | 2022-03-15 | 2022-03-15 | Truss arm joint, truss arm and working machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114772478B (en) |
| WO (1) | WO2023173621A1 (en) |
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| CN102530745A (en) * | 2012-03-20 | 2012-07-04 | 中联重科股份有限公司 | Arm joint for truss arm, truss arm, and crane with truss arm |
| CN110304559A (en) * | 2019-06-24 | 2019-10-08 | 浙江三一装备有限公司 | Truss arm and crane |
| CN110697595A (en) * | 2019-11-19 | 2020-01-17 | 浙江三一装备有限公司 | Truss arm and crane |
| CN113911938A (en) * | 2020-07-10 | 2022-01-11 | 利勃海尔爱茵根有限公司 | Detachable lattice component for crane boom |
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| DE3246217A1 (en) * | 1982-12-14 | 1984-06-14 | Gottwald GmbH, 4000 Düsseldorf | Lattice jib for a jib crane |
| DE202004004942U1 (en) * | 2004-03-26 | 2004-06-03 | Stöcker, Joachim | Cross beam, especially for stage scaffolding, has collapsible structure comprising bars, straps and pivot joint arrangement |
| DE102006060347B4 (en) * | 2006-12-20 | 2008-09-25 | Liebherr-Werk Ehingen Gmbh | Lattice piece for a mobile large crane and method for its erection |
| DE202008014059U1 (en) * | 2008-10-22 | 2010-03-11 | Daas, Kamal | Lattice support structure |
| CN201850085U (en) * | 2010-03-30 | 2011-06-01 | 长沙中联重工科技发展股份有限公司 | Primary truss arm and crawler crane with the same |
| DE202010011131U1 (en) * | 2010-08-06 | 2011-11-23 | Liebherr-Werk Ehingen Gmbh | Lattice piece and crane |
| CN105705453B (en) * | 2013-11-08 | 2018-06-05 | 伊特里克公司 | Crane boom segment for assembling a crane boom and method for assembling a crane boom |
| CN210214629U (en) * | 2019-06-24 | 2020-03-31 | 浙江三一装备有限公司 | Truss arm and crane |
| CN111348565A (en) * | 2020-04-22 | 2020-06-30 | 浙江三一装备有限公司 | Detachable crane boom and crane |
-
2022
- 2022-03-15 CN CN202210254302.6A patent/CN114772478B/en active Active
- 2022-06-27 WO PCT/CN2022/101588 patent/WO2023173621A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530745A (en) * | 2012-03-20 | 2012-07-04 | 中联重科股份有限公司 | Arm joint for truss arm, truss arm, and crane with truss arm |
| CN110304559A (en) * | 2019-06-24 | 2019-10-08 | 浙江三一装备有限公司 | Truss arm and crane |
| CN110697595A (en) * | 2019-11-19 | 2020-01-17 | 浙江三一装备有限公司 | Truss arm and crane |
| CN113911938A (en) * | 2020-07-10 | 2022-01-11 | 利勃海尔爱茵根有限公司 | Detachable lattice component for crane boom |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023173621A1 (en) | 2023-09-21 |
| CN114772478A (en) | 2022-07-22 |
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