CN213738325U - Transition joint, truss arm and crawler crane - Google Patents
Transition joint, truss arm and crawler crane Download PDFInfo
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- CN213738325U CN213738325U CN202020899669.XU CN202020899669U CN213738325U CN 213738325 U CN213738325 U CN 213738325U CN 202020899669 U CN202020899669 U CN 202020899669U CN 213738325 U CN213738325 U CN 213738325U
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Abstract
The utility model relates to an engineering machine tool technical field discloses a transition festival, truss arm and crawler crane. The transition joint comprises a pair of chord groups arranged in parallel, each chord group comprises two chords (1) located on the same plane, one ends of the two chords (1) are arranged in an intersecting mode and provided with first connectors (2) used for being connected with the single-arm support, and the other ends of the two chords (1) are respectively provided with second connectors (3) used for being connected with the double-arm support. The utility model discloses a transition festival can be used for the transitional coupling between single armed cantilever crane and the both arms cantilever crane to easily set up both arms at limited armlength within range as required, improve the utilization ratio of cantilever crane, because the transition festival is the structure stick, easily sets up to arbitrary length, and then can slow down the cross-section change between both arms cantilever crane and the single armed cantilever crane through the design of extension transition festival under the connection both arms cantilever crane condition, in order to reach the purpose that reduces stress concentration.
Description
Technical Field
The utility model relates to an engineering machine tool technical field specifically, relates to a transition festival, truss arm and crawler crane.
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 11 is formed at a position where a single arm transits to the two arms, a chord of a bottom section arm 10 passes through the bottom transition arm 11 and then is positioned on the same straight line with a chord of a middle standard section 12, but the bottom transition arm 11 only needs to be used in the working condition of the two arms, but cannot be used in other working conditions, and the sudden change of the section is particularly obvious at the position where the single arm and the two arms transit, so that stress concentration is easily caused and the assembly and the transportation are not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can slow down the cross-section change between both arms cantilever crane and the single armed cantilever crane, reduce stress concentration's transition joint, truss arm and crawler crane.
In order to realize above-mentioned purpose, the utility model provides a transition section, the transition section includes a pair of parallel arrangement's chord member group, every chord member group includes two chord members that are located the coplanar, two the crossing setting of one end of chord member is equipped with and is used for the first joint that is connected with the single armed jib, two the other end of chord member is equipped with respectively and is used for the second joint that is connected with the both arms cantilever jib.
Optionally, the first joint and the second joint are arranged to extend horizontally along the length of the chord.
Optionally, the other ends of the two chords of the chord group are connected by a web member, and the web member is arranged perpendicular to the second joint.
Optionally, two chords of the chord group and the web member form an acute triangle therebetween.
Optionally, the other ends of the two chords are connected with horizontal chords respectively, the second joint is arranged on the horizontal chords, and two ends of the web member are connected to the two horizontal chords respectively.
The utility model discloses the second aspect provides a truss arm, standard festival and the above-mentioned arbitrary scheme including single armed cantilever crane, two sets of parallel arrangement transition festival, single armed cantilever crane and two sets of through two between the standard festival tip the transition festival is connected, two the transition festival first joint respectively with the both sides of single armed cantilever crane link to each other, two the transition festival the second joint corresponds respectively to be connected in two sets of the standard festival.
Optionally, the distance between two sets of standard knots is set smaller than the width of a single set of standard knots.
Optionally, each set of the standard joints includes a plurality of intermediate joints, and the intermediate joints are connected to each other through a connecting joint capable of connecting two sets of the standard joints.
Optionally, one end of each of the two groups of standard joints is connected to the single-arm support through two transition joints, and the other end of each of the two groups of standard joints is connected to the arm head through two transition joints.
The third aspect of the utility model provides a crawler crane, including above-mentioned scheme truss arm.
Through the technical scheme, the utility model discloses a transition festival can be used for the transitional coupling between single armed cantilever crane and the both arms cantilever crane to easily set up both arms at limited arm length within range as required, improve the utilization ratio of cantilever crane, in addition, because the transition festival is the structure stick, easily set up to arbitrary length, and then can be under the both arms cantilever crane condition of connection, the design through the extension transition festival slows down the cross-sectional change between both arms cantilever crane and the single armed cantilever crane, with the sudden change degree that reduces the cross-section, reach the purpose that reduces stress concentration.
Other features and advantages of the present invention will be described in detail 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 section according to an embodiment of the present invention;
FIG. 4 is a top view of the transition section of FIG. 3;
fig. 5 is a top view of a truss arm according to an embodiment of the present invention.
Description of the reference numerals
1-chord member, 2-first joint, 3-second joint, 4-web member, 5-horizontal chord member, 6-standard section, 7-middle section, 8-connecting section, 9-arm head, 10-bottom section arm, 11-bottom transition arm and 12-middle standard section.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
With reference to fig. 3 and 4, according to an aspect of the present invention, a transition section is provided, the transition section includes a pair of parallel chord members, each chord member includes two chords 1, two located on the same plane the one end of chord member 1 intersects and sets up and is equipped with the first joint 2 that is used for being connected with the single-armed arm frame, two the other end of chord member 1 is equipped with the second joint 3 that is used for being connected with the double-armed arm frame respectively.
Through the technical scheme, the utility model discloses a transition festival can be used for the transitional coupling between single armed cantilever crane and the both arms cantilever crane to easily set up both arms as required in limited arm length within range, improve the utilization ratio of cantilever crane. In particular, for a double arm boom structure, it usually comprises two sets of standard joints arranged in parallel, so that during the use of the transition joint, the first joint 2 is connected with a single arm boom, where the single arm boom can be a standard joint or a bottom joint arm 10, etc., and the second joint 3 is connected with a single set of standard joints in the double arm boom. Further, since the number of the standard sections is two, at least two transition sections are required to be arranged for connection between any one end of the two groups of standard sections and the single-arm support, and thus the two transition sections are correspondingly connected with the two groups of standard sections one by one, in other words, the second joint 3 of a single transition section is correspondingly connected with one group of standard sections, and the first joints 2 of the two transition sections are respectively connected to two sides of the single-arm support.
In explanation, fig. 3 shows two chords 1 located on the same side in two chord group, two first joints 2 of the two chords 1 are correspondingly connected to one side of the single-arm support, and the other side of the single-arm support is connected to the first joint 2 of the other transition section. Fig. 4 shows two chords 1 in a chord group, and for a transition section, the two chords 1 are arranged in parallel, where parallel refers to planes in which the chords 1 are parallel, and furthermore, a single transition section at least comprises four chords 1, and the second joints 3 of the four chords 1 are all connected to the same group of standard sections.
It should be noted that, because the transition section is a single structural piece, it is easy to set to any length, and further, under the condition of switching between the single-arm support and the double-arm support, the change of the cross section between the double-arm support and the single-arm support can be slowed down by prolonging the design of the transition section, so as to reduce the abrupt change degree of the cross section, and achieve the purpose of reducing stress concentration.
In order to meet the installation requirement by matching with the design of the arm support, the first joint 2 and the second joint 3 are horizontally extended along the length direction of the chord member 1. It is noted that the end of the single-armed arm is usually provided with four joints, two joints on one side being intended to be connected to two first joints 2 of one transition section, and two joints on the other side being intended to be connected to two first joints 2 of the other transition section.
In addition, for the joint strength who promotes the transition section, two of chord member group the other end of chord member 1 passes through web member 4 and links to each other, web member 4 sets up to the perpendicular to second joint 3, provides the support for the chord member 1 of transition section through the design of web member 4, guarantees overall stability.
It is noted that two chords 1 of the chord group form an acute triangle with the web member 4. Because two groups of standard joints forming double arms are generally arranged in parallel, and the second joint 3 is horizontally extended to match the connection of the arm support, meanwhile, in the connection process, in order to ensure the integral strength, the web member 4 is generally arranged to be parallel to the end plane of the standard joints, namely to be vertical to the length direction of the single-arm support or the double-arm support, under the condition that an acute triangle can be formed between the two chord members 1 and the web member 4 in the chord member group, under the condition that the connection between the single-arm support and the double-arm support is completed by utilizing the transition joints, one end of each transition joint is connected with the single-arm support, the other end is connected with the two groups of standard joints forming double arms, the distance between the two groups of standard joints is certainly smaller than the width of the single-arm support, further, the distance between the two groups of standard joints can be limited to be smaller than the width of the single group of standard joints, thereby solving the problem of transportation over-limit, is convenient for transportation.
Further, for the arrangement of the second joint 3, two horizontal chords 5 are connected to the other ends of the chords 1 respectively, the second joint 3 is arranged on the horizontal chords 5, and two ends of the web members 4 are connected to the two horizontal chords 5 respectively. In the present embodiment, the horizontal chord 5 is connected to the other end of one of the two chords 1, and in this case, one end of the web member 4 is connected to the horizontal chord 5 and the other end is connected to the chord 1.
In combination with fig. 5, the second aspect of the present invention provides a truss arm, including single-arm support, two sets of parallel arrangement's standard festival 6 and above-mentioned arbitrary scheme the transition festival, single-arm support and two sets of through two between the 6 tip of standard festival the transition festival is connected, two the transition festival first joint 2 respectively with the both sides of single-arm support link to each other, two the transition festival the second joint 3 respectively corresponding connection in two sets of standard festival 6.
As described above, two sets of standard knots form two arms, and transition connection between the single-arm support and the double-arm support can be realized through the transition knots. The transition section is a single structure and is easy to set to any length, so that the change of the section between the double-arm support and the single-arm support can be slowed down by prolonging the design of the transition section in the using process, the sudden change degree of the section is reduced, and the purpose of reducing stress concentration is achieved.
It can be understood that two transition sections need to be arranged between any end portion of the standard section 6 and the single-arm support, the two transition sections correspond to two groups of standard sections one to one, the four second joints 3 of a single transition section correspond to and are connected with one group of standard sections, and the two first joints 2 of a single transition section correspond to and are connected with the two joints on one side of the single-arm support, so that the first joints 2 of the two transition sections correspond to and are connected with the two sides of the single-arm support respectively.
To solve the problem of transportation overrun, the distance between two sets of standard knots 6 is set smaller than the width of a single set of standard knots 6. Each group of standard knots 6 comprises a plurality of intermediate knots 7, and the intermediate knots 7 are connected through connecting knots 8 which can connect two groups of standard knots 6. The connection between the connecting joint 8 and the middle joint 7 is also completed through the joint, and the connecting joint 8 penetrates through the two groups of standard joints 6 to simultaneously connect the middle joints 7 in the two groups of standard joints 6, so that the overall rigidity of the double-arm support can be further improved. It should be noted that the connecting joints 8 extend perpendicular to the length direction of the truss arms, and joints are respectively arranged at two ends of the connecting joints 8 to form connection with the transition joints or the middle joints 7 in the two groups of standard joints. That is, the second joint 3 may be connected directly to the intermediate joint 7 during use of the transition joint, or may be connected to the connecting joint 8 as shown in fig. 5. Through the mutually matched connection between the connecting joint 8 and the transition joints, the stability of the switching between the single arm and the double arms is further improved, and meanwhile, other parts are not required to be arranged between the two transition joints, so that the purpose of weight reduction can be achieved as far as possible.
Certainly, in order to improve the utilization rate of the arm support, in the actual use process, only two arms are arranged in the limited arm length range, and therefore the end parts of the two groups of standard joints 9 are connected with the single-arm support. In this embodiment, one end of each of the two sets of standard knots 6 is connected to a base knot arm 10 serving as a single-arm support through two transition knots, and the other end of each of the two sets of standard knots 6 is connected to an arm head 9 through two transition knots. Meanwhile, other standard joints can be arranged between the transition joint and the arm head 9, and the utility model discloses do not do special restriction to this.
The utility model discloses a truss arm can the reinforcing jib of very big degree in this both arms within range lateral rigidity to promote the equal armlength of crawler crane and the hoisting performance under the range, in single arm and both arms equipment process in addition, connected node is less, makes on-the-spot installation and preparation work load few, and it is more convenient to practice thrift the cost and operate, can dismantle the components of a whole that can function independently transportation in the transportation simultaneously, avoids transporting limitedly.
The third aspect of the utility model provides a crawler crane, including above-mentioned scheme truss arm. This crawler crane is through adopting above-mentioned truss arm, consequently, has above-mentioned truss arm's whole advantages, and specifically, the cross-section change of truss arm is comparatively gentle, when using among the crawler crane, can effectively promote hoisting performance.
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 details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection 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. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (10)
1. The transition section is characterized by comprising a pair of chord groups arranged in parallel, each chord group comprises two chords (1) located on the same plane, one ends of the two chords (1) are arranged in an intersecting mode and provided with first connectors (2) used for being connected with a single-arm support, and the other ends of the two chords (1) are respectively provided with second connectors (3) used for being connected with the double-arm support.
2. The transition joint according to claim 1, characterized 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. The transition joint according to claim 2, characterized in that the other ends of the two chords (1) of the chord group are connected by a web member (4), the web member (4) being arranged perpendicular to the second joint (3).
4. A transition joint according to claim 3, characterised in that two chords (1) of the chord group form an acute triangle with the web member (4).
5. The transition section according to any one of claims 3-4, characterized in that the other ends of the two chords (1) are connected with horizontal chords (5), respectively, the second joints (3) are arranged on the horizontal chords (5), and the two ends of the web members (4) are connected with the two horizontal chords (5), respectively.
6. A truss arm is characterized by comprising a single-arm support, two groups of standard joints (6) arranged in parallel and a transition joint as claimed in any one of claims 1 to 5, wherein the single-arm support is connected with the end parts of the two groups of standard joints (6) through the two transition joints, the first joints (2) of the two transition joints are respectively connected with two sides of the single-arm support, and the second joints (3) of the two transition joints are respectively correspondingly connected with the two groups of standard joints (6).
7. Truss arm according to claim 6, wherein the distance between two sets of said standard knots (6) is arranged smaller than the width of a single set of said standard knots (6).
8. Truss arm according to claim 6, wherein each set of standard knots (6) comprises a plurality of intermediate knots (7), said intermediate knots (7) being connected to each other by means of a connecting knot (8) capable of connecting two sets of standard knots (6).
9. The truss arm as claimed in claim 6 wherein one end of two sets of standard knots (6) is connected to the single arm boom through two said transition knots and the other end of two sets of standard knots (6) is connected to the arm head (9) through two said transition knots.
10. A crawler crane comprising a truss arm as claimed in any one of claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020899669.XU CN213738325U (en) | 2020-05-25 | 2020-05-25 | Transition joint, truss arm and crawler crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020899669.XU CN213738325U (en) | 2020-05-25 | 2020-05-25 | Transition joint, truss arm and crawler crane |
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| Publication Number | Publication Date |
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| CN213738325U true CN213738325U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020899669.XU Active CN213738325U (en) | 2020-05-25 | 2020-05-25 | Transition joint, truss arm and crawler crane |
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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 |
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2020
- 2020-05-25 CN CN202020899669.XU patent/CN213738325U/en active Active
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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