CN111689408A - Transition arm section, double-arm connecting assembly, double-arm support and light arm support - Google Patents
Transition arm section, double-arm connecting assembly, double-arm support and light arm support Download PDFInfo
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- CN111689408A CN111689408A CN202010451678.7A CN202010451678A CN111689408A CN 111689408 A CN111689408 A CN 111689408A CN 202010451678 A CN202010451678 A CN 202010451678A CN 111689408 A CN111689408 A CN 111689408A
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- 230000001154 acute effect Effects 0.000 claims description 4
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- 230000008859 change Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
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- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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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
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
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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
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Abstract
The invention relates to the technical field of engineering machinery and discloses a transition arm section, a double-arm connecting assembly, a double-arm support and a light arm support. The transition arm section comprises two groups of chord members arranged in parallel, each group of chord members comprises two chord members (1), each chord member (1) is provided with a first end and a second end, the first end is provided with a first joint (2) capable of being connected with the double-arm support, the second end is provided with a second joint (3) used for being connected with the single-arm support, and the distance between the first ends of the two chord members (1) of the chord members is smaller than the distance between the second ends. The invention provides a multifunctional transition arm section which can be matched with other components to form a double-arm connecting component for connecting a double-arm frame and can also be used for connecting a light arm frame, so that a light main arm working condition transition section does not need to be independently configured, and the use cost of a user can be reduced by comprehensively considering multiple working conditions.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a transition arm section, a double-arm connecting assembly, a double-arm support and a light arm support.
Background
In recent years, the construction requirements of the national wind power and petrochemical industries are increasing day by day, and the market demand of the crawler crane for the construction is also correspondingly increased. For medium and large-tonnage crawler cranes, in order to enrich the combination of the crawler crane boom, a double-arm boom is improved and formed on the basis of the original single boom, so that the lateral rigidity of the boom can be improved, and the lateral displacement of the boom head relative to the root of the boom due to factors such as wind load, rotary inertia force and the like can be reduced, thereby greatly improving the lifting performance of the medium and long boom and further improving the product competitiveness.
The double-arm support is mainly manufactured by the following two methods:
firstly, the double arms are arranged in the full-arm-length range, the lateral rigidity can be greatly improved by the design, but the double arms are used in the full-arm-length range on the whole, the utilization rate of part of the arm frame is low, and more mounting points are assembled in the full-arm-length range, so that a great deal of mounting workload can be increased;
secondly, as shown in fig. 1 and fig. 2, two arms are arranged in a limited arm length range, a bottom transition arm 19 is formed at a position where a single arm is transited to the two arms, a chord of a bottom section arm 14 passes through the bottom transition arm 19 and is positioned on the same straight line with a chord of an intermediate standard section 15, however, the bottom transition arm 19 only needs to be used in the working condition of the two arms, but cannot be used in other working conditions, and the section mutation is particularly obvious at the position where the single arm and the two arms are transited, so that stress concentration is easily caused, and the assembly and the transportation are not facilitated.
Disclosure of Invention
The invention aims to provide a transition arm section, a double-arm connecting assembly, a double-arm support and a light arm support which can solve the problems.
In order to achieve the above purpose, the present invention provides a transition arm section, which includes two groups of chord members arranged in parallel, each group of chord members includes two chord members, each chord member has a first end and a second end, the first end is provided with a first joint capable of being connected with a double-arm frame, the second end is provided with a second joint for being connected with a single-arm frame, and a distance between the first ends of the two chord members of the chord member group is set to be smaller than a distance between the second ends.
Optionally, the first joint and the second joint are arranged to extend horizontally along the length of the chord.
Optionally, a third joint perpendicular to the first joint is provided on the first end.
Optionally, the two chord groups are connected to each other through at least two web members, and the at least two web members are arranged in parallel and connected to the chord members near the second end.
Optionally, a fourth joint is provided on the at least two web members.
The invention provides a double-arm connecting assembly, which comprises the transition arm section and connecting arm sections arranged on two sides of the transition arm section, wherein the connecting arm sections are provided with fifth joints positioned on the same side as the first joints, and the first joints and the fifth joints are arranged to be connected with two sides of the end part of a standard section.
Optionally, the connecting arm section comprises two connecting chords, one end of each connecting chord is connected to the transition arm section and forms an acute angle with an included angle between the transition arm sections, and the other end of each connecting chord is provided with the fifth joint.
Optionally, the two connecting chords are arranged to have gradually increasing intervals along the extending direction from one end to the other end; and/or
The connecting arm section comprises a supporting rod connected with the connecting chord member, and a sixth joint connected with the chord member is arranged on the supporting rod.
The invention provides a double-arm support, which comprises a bottom section arm, two groups of standard sections arranged in parallel and the double-arm connecting assembly in the scheme, wherein two sides of the end part of each group of standard sections are respectively connected with the first joint and the connecting arm section, and the second end of the transition arm section is connected with the bottom section arm.
The invention provides a light arm frame, which comprises a bottom section arm, an auxiliary arm section and the transition arm section in the scheme, wherein the first end of the transition arm section can be connected with the auxiliary arm section, and the second end of the transition arm section is connected with the bottom section arm.
Through the technical scheme, the invention provides the multifunctional transition arm section which can be matched with other components to form a double-arm connecting component for connecting the double-arm support and can also be used for connecting the light arm support, so that the working condition transition section of the light main arm does not need to be independently configured, and the use cost of a user can be reduced by comprehensively considering a plurality of working conditions;
in addition, due to the change of the distance between the two ends of the transition arm section, when the transition arm section is used as a double-arm support, the left side and the right side of the first end of the transition arm section can be respectively connected with the two groups of standard sections forming double arms, so that the distance between the two groups of standard sections is smaller, the problem of transportation overrun can be solved, and the transportation is convenient;
meanwhile, the transition arm sections are single in structure and are easy to set to any length, and the change of the sections between the two groups of standard sections and the bottom section arm can be slowed down under the condition that the transition arm sections are used as the double-arm support so as to reduce the sudden change degree of the sections and achieve the purpose of reducing stress concentration.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a front view of a second embodiment dual arm boom of the prior art;
FIG. 2 is a top view of the dual arm boom of FIG. 1;
FIG. 3 is a front view of a transition arm segment according to one embodiment of the present invention;
FIG. 4 is a top view of the transition arm segment of FIG. 3;
FIG. 5 is a schematic diagram of the dual-arm linkage assembly of one embodiment of the present invention;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5;
FIG. 8 is a front view of the connecting arm segments in the dual-arm assembly of FIG. 5;
FIG. 9 is a top view of the connecting arm segment of FIG. 8;
FIG. 10 is a front view of a dual arm boom according to an embodiment of the present invention;
FIG. 11 is a top view of the dual arm boom of FIG. 10;
fig. 12 is a top view of a lightweight boom according to an embodiment of the present invention.
Description of the reference numerals
1-chord member, 2-first joint, 3-second joint, 4-third joint, 5-web member, 6-fourth joint, 7-connecting arm joint, 8-fifth joint, 9-standard joint, 10-connecting chord member, 11-horizontal chord member, 12-supporting rod, 13-sixth joint, 14-bottom arm, 15-middle joint, 16-connecting joint, 17-auxiliary arm joint, 18-arm head, 19-bottom transition arm.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
With reference to fig. 3 and 4, according to an aspect of the present invention, a transition arm section is provided, which includes two sets of chord members arranged in parallel, each set of chord members includes two chord members 1, each chord member 1 has a first end and a second end, the first end is provided with a first joint 2 capable of being connected with a double-arm boom, the second end is provided with a second joint 3 for being connected with a single-arm boom, and a distance between the first ends of the two chord members 1 of the chord member set is set to be smaller than a distance between the second ends.
Wherein, the first end and the second end are the both ends of chord member 1 along length direction respectively. As shown in fig. 4 for a group of chord groups, it can be seen that the distance between the first ends of two chords 1 in the same chord group is set to be smaller than the distance between the second ends, specifically, the two chords 1 are set as long as the end connected with the arm support meets the above requirements, and in order to save the design space as much as possible, the chords 1 are preferably arranged in an inclined extension manner.
Through the technical scheme, the invention provides the multifunctional transition arm section, the transition arm section can be matched with other components to form a double-arm connecting component for connecting the double-arm support and can also be used for connecting the light-weight arm support, so that the working condition transition section of the light-weight main arm does not need to be independently configured, and the use cost of a user can be reduced by comprehensively considering multiple working conditions.
When the transition arm sections are used for connecting the double-arm boom, the second joints 3 of all the chord members 1 are connected with the same single-arm boom, such as a single standard section or a bottom section arm 14, the first joints 2 of two chord members 1 positioned on the same side in two chord member groups are connected with the same boom, as shown in fig. 3, the two chord members 1 positioned on the same side in two chord member groups are shown, the first joints 2 of two chord members 1 positioned on the same side in the drawing are connected with one boom, while the first joints 2 of two chord members 1 positioned on the other side are connected with the other boom, the boom can be two sets of standard sections 9 mentioned below for forming the double-arm boom, and therefore, the transition between the single-arm boom and the double-arm boom can be realized through the transition arm sections.
It can be understood that the first joints 2 of the chord group are respectively connected with the standard knots 9 at two sides, therefore, the distance between the two groups of standard knots 9 arranged in parallel is the distance between the first ends of the two chords 1 in the chord group, and because the distance between the ends is smaller than the distance between the second ends, when the left and right sides of the first end of the transition arm knot are respectively connected with the two groups of standard knots 9 forming two arms, the distance between the two groups of standard knots is smaller, further, the distance is smaller than the width of a single standard knot 9, and simultaneously is smaller than the width of the single-arm frame, thereby solving the problem of transportation overrun and facilitating transportation. Note that the left and right sides refer to actual positions in the field, and the upper and lower sides in fig. 4 are shown with reference to fig. 4.
When the transitional arm section is used as a connection for a light arm, the second joint 3 will still be connected to a single arm, such as the base section arm 14 or a standard section, while the first joint 2 will be connected to a secondary arm section 17 having a smaller width or cross-section than the single arm, where the number of secondary arm sections 17 is also single.
In addition, the transition arm section is a structural single piece and is easy to set to any length, and under the condition of being used as a double-arm support, the design of the transition arm section can be adaptively prolonged, so that the change of the cross section between two groups of standard sections and the bottom section arm used as the single-arm support is slowed down, the abrupt change degree of the cross section is reduced, and the purpose of reducing stress concentration is achieved.
In order to meet the requirements of multifunctional installation and use, the first joint 2 and the second joint 3 are horizontally extended along the length direction of the chord member 1 in cooperation with the design of the arm support. Further, when the double-arm support is used for connection, in order to improve the stability of the double-arm support, other components are designed in a matching manner to assist the installation of the double-arm support, and specifically, a third joint 4 perpendicular to the first joint 2 is arranged at the first end. By the design of the third joint 4, mounting between other components and the transition arm segment will be achieved.
It is noted that two groups of said chord members are connected by at least two web members 5, said at least two web members 5 being arranged parallel to each other and connected to said chord member 1 near said second end. Further, a fourth joint 6 is arranged on the at least two web members 5. The provision of the fourth joint 6 on the web member 5 instead of the chord 1 reduces the overall increase in width due to the joint design, thereby ensuring that transportation is not restricted by size. The third joint 4 and the fourth joint 6 will cooperate to enable mounting between other components and the transition arm segment to promote the robustness of the mounting. Of course, other web members 5 may be disposed between the chords 1 to improve the strength of the arm sections, and the invention is not limited thereto.
With reference to fig. 5 to 7, a second aspect of the present invention provides a dual-arm connection assembly, including the transition arm section according to any of the above embodiments and connecting arm sections 7 respectively disposed at two sides of the transition arm section, where a fifth joint 8 located at the same side as the first joint 2 is disposed on the connecting arm section 7, and the first joint 2 and the fifth joint 8 are configured to be connectable to two sides of an end of a standard joint 9.
It should be noted that the two sides of the transition arm section refer to the upper and lower sides in fig. 5, that is, the left and right sides of the transition arm section in the actual field. Further, the connecting arm segments 7 will be arranged completely symmetrically on both sides of the transition arm segment. In the double-arm installation process, the first joint 2 positioned on one side and the fifth joint 8 of one connecting arm joint 7 jointly realize the installation of the first group of standard joints 9, and the first joint 2 positioned on the other side and the fifth joint 8 of the other connecting arm joint 7 jointly realize the installation of the second group of standard joints 9. For a single standard joint 9, the two sides of the end part are respectively connected with the transition arm joint and the connecting arm joint 7, but not only connected with the connecting arm joint 7, thereby being convenient for realizing the independent use of the transition arm joint as other arm frame connecting pieces.
With reference to fig. 8 and 9, the connecting arm section 7 includes two connecting chords 10, one end of each connecting chord 10 is connected to the transition arm section, and an included angle between each connecting chord and the transition arm section is an acute angle, so that in the connection process of the single-arm boom and the double-arm boom, the change of the cross section is slowed down as much as possible, and the degree of sudden change of the cross section is reduced, so as to achieve the purpose of reducing stress concentration. It will be appreciated that the smaller the acute angle, the more gradual the change in cross-section, and accordingly, the longer the design lengths of the connecting arm segment 7 and the transition arm segment are.
Further, one end of the connecting chord 10 is connected to the fourth joint 6, i.e. a joint is provided which is matched to the fourth joint 6, while the other end of the connecting chord 10 is provided with the fifth joint 8. In order to match the design of the arm support and facilitate the connection of the arm support, the fifth joint 8 is also arranged to extend in the horizontal direction. It should be noted that the connection between the arm sections and the arm frame are realized by the cooperation of joints, specifically, the joints may be connected by pin shafts, as shown in fig. 6 and 7, or may be connected by bolts.
In order to further save space on the basis of meeting the requirement of strength, the distance between the two connecting chords 10 is gradually increased along the extending direction from one end to the other end, specifically, the starting ends of the two connecting chords 10 are connected to the fourth joint 6 on the web member 5 of the chord group, so that the distance between the starting ends of the two connecting chords 10 is smaller than the distance between the two chord groups, and the purpose of saving space is achieved.
In addition, the connecting arm section 7 comprises a support rod 12 connected with the connecting chord 10, and a sixth joint 13 connected with the chord 1 is arranged on the support rod 12. Specifically, the sixth joint 13 is to be connected to the third joint 4 of the chord 1, so that the connecting arm segment 7 can be stably mounted on the transition arm segment by fixing one end of the connecting chord 10 to the fourth joint 6 and fixing the sixth joint 13 to the third joint 4. Meanwhile, the third joint 4 is perpendicular to the first joint 2, and accordingly the sixth joint 13 and the third joint 4 are matched to be perpendicular to the first joint 2, so that by adopting the connection mode, no influence on connection of the two arms on the double-arm connection assembly is caused, and convenience in installation is guaranteed.
In an embodiment of the present invention, the other end of the connecting chord 10 may be further connected to a horizontal chord 11, the horizontal chords 11 of the two connecting chords 10 are arranged in parallel, and the fifth joint 8 is arranged on the horizontal chord 11. At this time, the support rods 12 are disposed on the horizontal chords 11. The design of the fifth joint 8 can also be guaranteed by arranging the horizontal chord 11, and then the modification of the double-arm support is realized.
As a whole, four second joints 3 for connecting with the single-arm boom are formed at one end of the double-arm connecting assembly, specifically, one second joint 3 is arranged on each of the four chords 1, eight joints for connecting with the double-arm boom are formed at the other end of the double-arm connecting assembly, specifically, the eight joints include four first joints 2 and four fifth joints 8, the eight joints are located on the same plane, and since two fifth joints 8 are arranged on each connecting arm section 7, the two connecting arm sections 7 form four fifth joints 8 together. The two first joints 2 and the two fifth joints 8 located on the upper side in fig. 5 are intended to be connected to a first set of standard knots 9, while the two first joints 2 and the two fifth joints 8 located on the lower side are intended to be connected to a second set of standard knots 9.
With reference to fig. 10 and 11, a third aspect of the present invention provides a dual-arm support, including a bottom-link arm 14, two sets of standard links 9 arranged in parallel, and the dual-arm connection assembly according to the above scheme, where two sides of an end of each set of standard links 9 are respectively connected to the first joint 2 and the connecting-arm link 7, and the second end of the transition-arm link is connected to the bottom-link arm 14. As mentioned above, the first joint 2 on one side will together with the fifth joint 8 of one connecting arm joint 7 realize the installation of the first group of standard joints 9, while the first joint 2 on the other side will together with the fifth joint 8 of the other connecting arm joint 7 realize the installation of the second group of standard joints 9, the two groups of standard joints 9 forming two arms.
In the double-arm frame, the transition from the single arm to the double arms is realized through the transition arm section and the connecting arm sections 7 positioned on two sides of the transition arm section, and the transition arm section and the connecting arm sections 7 are designed by adopting single-piece structures convenient to assemble, so that the length of the transition arm section and the length of the connecting arm section are suitable for being prolonged in the actual production process, the angle between the connecting chord 10 and the transition arm section is further reduced, the abrupt change degree of the section is reduced, the whole section changes more smoothly, and the purpose of reducing stress concentration is achieved. And it should be noted that any cross section of the connecting arm section 7 and the transition arm section is smaller than the corresponding cross section of the standard section 9, so that the size does not exceed the transportation limit, and the disassembly and transportation are convenient.
Each set of standard knots 9 may include a plurality of intermediate knots 15, and the intermediate knots 15 are connected by a connecting knot 16 capable of connecting two sets of standard knots 9. The connection between the connecting joint 16 and the middle joint 15 is also completed through a joint, and the connecting joint 16 penetrates through the two groups of standard joints 9 to simultaneously connect the middle joints 15 in the two groups of standard joints 9, so that the overall rigidity of the double-arm support can be further improved.
In order to improve the utilization rate of the arm support, in the actual use process, two arms are arranged in the limited arm length range, namely two groups of standard joints 9 with limited length are arranged at the required positions, and the end parts of the two groups of standard joints 9 are connected with the double-arm connecting assembly so as to realize the transition between the double arms and the single arm. In this embodiment, one end of two sets of standard knots 9 is connected to other standard knots or bottom knot arms 14 through a double-arm connection assembly, and the other end of two sets of standard knots 9 is connected to other standard knots and arm heads 18 in sequence through a double-arm connection assembly. Certainly, in other embodiments, two groups of standard joints 9 can be additionally arranged at places needing improvement, so that the double-arm connection is completed through the double-arm connection assembly, the lateral rigidity of the arm frame in the range of the double arms can be greatly enhanced, the lifting performance of the crawler crane under the same arm length and amplitude is improved, in addition, in the single-arm and double-arm assembly process, the number of connection nodes is small, the field installation and manufacturing workload is small, the cost is saved, the operation is more convenient, meanwhile, the split transportation can be disassembled in the transportation process, and the transportation limitation is avoided.
With reference to fig. 12, a fourth aspect of the present invention provides a light arm support, including a base arm 14, an auxiliary arm section 17 and the transition arm section in the above-mentioned scheme, where the first end of the transition arm section can be connected to the auxiliary arm section 17, and the second end of the transition arm section is connected to the base arm 14.
It should be noted that under some working conditions of the light main arm with high height and low load-bearing requirement, the light arm support design is adopted, so that a light arm support transition section cannot be used. By adopting the design of the transition arm sections, the invention not only can realize the connection of the double-arm support, but also can realize the connection of the light arm support so as to connect the main arm section and the auxiliary arm section with different section sizes together. When a user configures the double-arm working condition after the transition arm joint for the light main arm working condition is available, the transition arm joint in the double-arm connecting assembly can be configured less, and the cost can be saved by comprehensively considering a plurality of working conditions.
As described above, since the first joint and the second joint are both arranged to extend horizontally along the length direction of the chord, the design of the sub-arm section 17 is further matched, and the switching between the sub-arm section 17 and the base arm section 14 or other standard sections is completed, so as to meet the use requirement of the multifunctional transition arm section.
It is worth noting that the double-arm support or the light arm support can be applied to a crawler crane to complete different works, and the requirements of actual work are met.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. The transition arm section is characterized by comprising two groups of chord members arranged in parallel, each group of chord members comprises two chord members (1), each chord member (1) is provided with a first end and a second end, the first end is provided with a first joint (2) capable of being connected with a double-arm frame, the second end is provided with a second joint (3) used for being connected with a single-arm frame, and the distance between the first ends of the two chord members (1) of each chord member group is smaller than the distance between the second ends.
2. Transition arm segment according to claim 1, characterised in that the first joint (2) and the second joint (3) are arranged to extend horizontally in the length direction of the chord (1).
3. Transition arm segment according to claim 2, characterised in that the first end is provided with a third joint (4) perpendicular to the first joint (2).
4. A transition arm segment according to any one of claims 1-3, characterised in that the chord members of both sets are connected by at least two web members (5), which web members (5) are arranged parallel to each other and are connected to the chord member (1) near the second end.
5. Transition arm segment according to claim 4, characterised in that a fourth joint (6) is provided on the at least two web members (5).
6. A double-arm connecting assembly, characterized by comprising a transition arm section as claimed in any one of claims 1 to 5 and connecting arm sections (7) respectively arranged on both sides of the transition arm section, wherein a fifth joint (8) is arranged on the connecting arm section (7) and is positioned on the same side as the first joint (2), and the first joint (2) and the fifth joint (8) are arranged to be connected with both sides of the end part of a standard joint (9).
7. A dual-arm connecting assembly according to claim 6, wherein the connecting arm section (7) comprises two connecting chords (10), one end of the connecting chords (10) being connected to the transition arm section at an acute angle to the transition arm section, the other end of the connecting chords (10) being provided with the fifth joint (8).
8. A dual-arm connecting assembly according to claim 7, wherein the two connecting chords (10) are arranged with increasing spacing in the direction of extension from one end to the other; and/or
The connecting arm section (7) comprises a supporting rod (12) connected with the connecting chord member (10), and a sixth joint (13) connected with the chord member (1) is arranged on the supporting rod (12).
9. A double-arm boom, characterized in that it comprises a bottom knuckle arm (14), two sets of parallel standard knuckles (9) and a double-arm connection assembly according to any one of claims 6-8, wherein both sides of the end of each set of standard knuckles (9) are connected to the first joint (2) and the connecting arm knuckle (7), respectively, and the second end of the transition arm knuckle is connected to the bottom knuckle arm (14).
10. A light arm support, characterized in that it comprises a base arm (14), an auxiliary arm section (17) and a transition arm section according to any of claims 1-5, said first end of said transition arm section being connectable to said auxiliary arm section (17) and said second end of said transition arm section being connected to said base arm (14).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010451678.7A CN111689408A (en) | 2020-05-25 | 2020-05-25 | Transition arm section, double-arm connecting assembly, double-arm support and light arm support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010451678.7A CN111689408A (en) | 2020-05-25 | 2020-05-25 | Transition arm section, double-arm connecting assembly, double-arm support and light arm support |
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| CN111689408A true CN111689408A (en) | 2020-09-22 |
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| CN202010451678.7A Pending CN111689408A (en) | 2020-05-25 | 2020-05-25 | Transition arm section, double-arm connecting assembly, double-arm support and light arm support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562638A (en) * | 2021-07-22 | 2021-10-29 | 大连益利亚工程机械有限公司 | Large-arm-length crane boom and crane |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751009A (en) * | 1980-09-09 | 1982-03-25 | Shin Meiwa Ind Co Ltd | Hydraulic cylinder device for telescopic boom |
| CN101880012A (en) * | 2010-07-21 | 2010-11-10 | 上海三一科技有限公司 | Transition structure for crane jib |
| CN207418163U (en) * | 2017-11-21 | 2018-05-29 | 浙江三一装备有限公司 | Truss arm, crane strengthen jib structure and crawler crane |
| CN108328492A (en) * | 2018-03-29 | 2018-07-27 | 徐工集团工程机械股份有限公司 | A kind of superpower boom system of multi-arm frame with mapping function |
| CN207748769U (en) * | 2017-12-21 | 2018-08-21 | 徐工集团工程机械股份有限公司 | A kind of general transition segment of crawler crane |
| CN110626965A (en) * | 2019-10-12 | 2019-12-31 | 浙江三一装备有限公司 | Lattice type reducing assembly arm support and crane |
| CN110697595A (en) * | 2019-11-19 | 2020-01-17 | 浙江三一装备有限公司 | Truss arm and crane |
| CN210885035U (en) * | 2019-11-19 | 2020-06-30 | 浙江三一装备有限公司 | Truss arm and crane |
-
2020
- 2020-05-25 CN CN202010451678.7A patent/CN111689408A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751009A (en) * | 1980-09-09 | 1982-03-25 | Shin Meiwa Ind Co Ltd | Hydraulic cylinder device for telescopic boom |
| CN101880012A (en) * | 2010-07-21 | 2010-11-10 | 上海三一科技有限公司 | Transition structure for crane jib |
| CN207418163U (en) * | 2017-11-21 | 2018-05-29 | 浙江三一装备有限公司 | Truss arm, crane strengthen jib structure and crawler crane |
| CN207748769U (en) * | 2017-12-21 | 2018-08-21 | 徐工集团工程机械股份有限公司 | A kind of general transition segment of crawler crane |
| CN108328492A (en) * | 2018-03-29 | 2018-07-27 | 徐工集团工程机械股份有限公司 | A kind of superpower boom system of multi-arm frame with mapping function |
| CN110626965A (en) * | 2019-10-12 | 2019-12-31 | 浙江三一装备有限公司 | Lattice type reducing assembly arm support and crane |
| CN110697595A (en) * | 2019-11-19 | 2020-01-17 | 浙江三一装备有限公司 | Truss arm and crane |
| CN210885035U (en) * | 2019-11-19 | 2020-06-30 | 浙江三一装备有限公司 | Truss arm and crane |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562638A (en) * | 2021-07-22 | 2021-10-29 | 大连益利亚工程机械有限公司 | Large-arm-length crane boom and crane |
| CN113562638B (en) * | 2021-07-22 | 2024-01-30 | 大连益利亚工程机械有限公司 | Large-arm-length crane boom and crane |
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Application publication date: 20200922 |
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