CN212425221U - Cantilever crane and crawler crane - Google Patents
Cantilever crane and crawler crane Download PDFInfo
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- CN212425221U CN212425221U CN202021818375.6U CN202021818375U CN212425221U CN 212425221 U CN212425221 U CN 212425221U CN 202021818375 U CN202021818375 U CN 202021818375U CN 212425221 U CN212425221 U CN 212425221U
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Abstract
The application relates to the technical field of crawler cranes, in particular to an arm support and a crawler crane. The arm support comprises an arm support main body and an arm head; the arm support main body is of a truss structure, and the truss structure comprises a plurality of longitudinal beams and a plurality of diagonal supporting pieces; the plurality of longitudinal beams are arranged at intervals and are surrounded to form a beam structure, a plurality of inclined supporting pieces are connected between every two adjacent longitudinal beams, and the inclined supporting pieces and the longitudinal beams form a triangular connecting structure; one ends of the longitudinal beams are used for being connected with a body of the crawler crane, and the other ends of the longitudinal beams are connected with the arm head; the longitudinal beam and the diagonal support piece are formed by any one of rectangular tubes, H-shaped steel, channel steel, I-shaped steel and angle steel. The longitudinal beam and the diagonal bracing piece are made of any one of a rectangular tube, H-shaped steel, channel steel, I-shaped steel and angle steel, and under the condition of the same cross-sectional area, the bending resistance of the rectangular tube is higher than that of a circular tube; the pipe avoids the operation of processing the intersecting line of the circular pipe end, and reduces the complexity of the manufacturing process and the manufacturing cost.
Description
Technical Field
The application relates to the technical field of crawler cranes, in particular to an arm support and a crawler crane.
Background
The boom of the prior crawler crane is mostly designed and manufactured by adopting a circular section steel pipe (hereinafter, referred to as a circular steel pipe), and the circular steel pipe boom has the structural defects that: firstly, under the condition of the same cross-sectional area, the bending resistance of the circular tube is relatively low; secondly, the manufacture of the circular tube arm support needs to process intersecting lines on the end heads of the circular tubes, and the manufacturing process is relatively complex, so that the manufacturing cost is increased.
SUMMERY OF THE UTILITY MODEL
The application aims to provide an arm support and a crawler crane, which can improve the bending resistance of the arm support and reduce the complexity of a manufacturing process.
The application provides an arm support for a crawler crane, which comprises an arm support main body and an arm head;
the arm support main body is of a truss structure, and the truss structure comprises a plurality of longitudinal beams and a plurality of diagonal supporting pieces;
the longitudinal beams are arranged at intervals and are surrounded to form a beam structure, a plurality of inclined supporting pieces are connected between every two adjacent longitudinal beams, and the inclined supporting pieces and the longitudinal beams form a triangular connecting structure; one ends of the longitudinal beams are used for being connected with a body of the crawler crane, and the other ends of the longitudinal beams are connected with the arm head;
the longitudinal beam and the inclined support piece are formed by any one of a rectangular pipe, H-shaped steel, channel steel, I-shaped steel and angle steel.
In the above technical solution, further, the longitudinal beam includes an upper section beam and a lower section beam which are detachably connected;
one end of each upper section beam, which is far away from the lower section beam, is connected with the arm head, and a plurality of inclined supporting pieces are connected between every two adjacent upper section beams to form an upper section arm;
one end, far away from the upper section beam, of each lower section beam is connected with the vehicle body, and a plurality of inclined supporting pieces are connected between every two adjacent lower section beams to form a lower section arm.
In the above technical solution, further, from the end where the upper beam and the lower beam are connected to each other toward the other end of the upper beam, the cross section of the space surrounded by the plurality of upper beams is tapered;
and the section of a space surrounded by the lower section beams is gradually reduced from one end of the lower section beams connected with the upper section beams to the other end of the lower section beams.
In the technical scheme, the number of the upper section beams is four, and the cross section of a beam structure formed by the four upper section beams in a surrounding manner is square;
the number of the lower section beams is four, and the four lower section beams form two parallel brackets; the support comprises two lower section beams, and the distance between the two lower section beams belonging to the same support is gradually reduced from the end, connected with the upper section beam, of the lower section beam to the other end of the lower section beam.
In the above technical solution, further, a plurality of cross beams are arranged at the end part of the lower section beam close to the vehicle body;
the plurality of cross beams are arranged at intervals along the length direction of the lower section beams, and the cross beams are connected with two adjacent lower section beams; and taking a plane where the connection point of the upper section beam and the lower section beam is located as a reference plane, wherein the cross beam is parallel to the reference plane.
In the above technical solution, further, the cross beam is formed by any one of a rectangular tube, H-shaped steel, channel steel, i-shaped steel, and angle steel.
In the above technical scheme, further, a reinforcing rib plate is further arranged at the joint of the cross beam and the lower section beam.
In the above technical solution, further, the structure further comprises a first reinforcing beam and a second reinforcing beam;
the first reinforcing beam is used for connecting the cross beam and the lower section beam to form a triangular connecting structure;
the second reinforcing beam is used for connecting the two cross beams which are opposite in position.
In the above technical solution, further, the connecting device further comprises two connecting lugs;
the connecting lug is connected with the two lower section beams of the support, and the connecting lug is provided with a connecting hole for connecting the vehicle body.
The application also provides a crawler crane which comprises the arm support.
Compared with the prior art, the beneficial effect of this application is:
according to the arm support provided by the application, the longitudinal beam and the diagonal support piece are made of any one of rectangular tubes, H-shaped steel, channel steel, I-shaped steel and angle steel, and when the longitudinal beam and the diagonal support piece are made of the rectangular tubes and have the same cross-sectional area, the bending resistance of the rectangular tubes is higher than that of circular tubes; and by adopting the pipe, the operation of processing the intersecting line of the end of the circular pipe during the processing of the circular pipe is avoided, and the complexity of the manufacturing process and the manufacturing cost are reduced.
The application also provides a crawler crane which comprises the arm support in the scheme. Based on the above analysis, the crawler crane also has the above beneficial effects, and the details are not repeated herein.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an arm support provided in the present application at a first viewing angle;
fig. 2 is a schematic structural diagram of the boom provided in the present application at a second viewing angle;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic cross-sectional view at B-B in fig. 2.
In the figure: 101-a boom main body; 102-an arm head; 103-diagonal stay; 104-upper section beam; 105-lower section beam; 106-upper arm; 107-lower arm; 108-a scaffold; 109-a cross beam; 110-reinforcing rib plate; 111-a first reinforcing beam; 112-a second reinforcing beam; 113-connecting lugs; 114-connecting hole.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example one
Referring to fig. 1 to 4, the boom provided by the present application is used for a crawler crane, and the boom includes a boom main body 101 and a boom head 102; the boom body 101 is a truss structure, the truss structure comprises a plurality of longitudinal beams and a plurality of diagonal braces 103, and the distribution of bending moment and shearing force in the structure can be adapted through reasonable arrangement of the longitudinal beams and the diagonal braces 103. Specifically, a plurality of longitudinal beams are arranged at intervals and are surrounded to form a beam structure, a plurality of diagonal support members 103 are connected between two adjacent longitudinal beams, and the diagonal support members 103 and the longitudinal beams form a triangular connection structure, so that the structure of the whole arm support is more stable.
One end of each longitudinal beam is used for being connected with a body of the crawler crane, the other end of each longitudinal beam is connected with the arm head 102, each body comprises a rotary table and a chassis, the lower ends of the longitudinal beams are hinged to the front portion of the rotary table, and the top ends of the longitudinal beams are suspended and supported by a variable-amplitude steel wire rope pulley block (arranged on the arm head 102), so that the inclination angle of the arm support can be changed.
The longitudinal beams and diagonal stay members 103 are formed of any one of rectangular pipes, H-shaped steel, channel steel, i-shaped steel, and angle steel. Preferably, the longitudinal beams and the diagonal braces 103 are made of rectangular pipes, and the bending resistance of the rectangular pipes is higher than that of circular pipes under the condition of the same cross-sectional area; and by adopting the pipe, the operation of processing the intersecting line of the end of the circular pipe when the circular pipe is processed is avoided, and the complexity of the manufacturing process and the manufacturing cost are reduced.
In an alternative scheme of the embodiment, the longitudinal beam comprises an upper-section beam 104 and a lower-section beam 105 which are detachably connected; one ends of the upper section beams 104, which are far away from the lower section beam 105, are connected with the arm head 102, and a plurality of diagonal braces 103 are connected between every two adjacent upper section beams 104 to form an upper section arm 106; one ends of the lower-section beams 105 far away from the upper-section beam 104 are connected with the vehicle body, and a plurality of diagonal braces 103 are connected between two adjacent lower-section beams 105 to form a lower-section arm 107.
In the embodiment, in order to facilitate transportation, the arm support can be disassembled into the structures of the upper knuckle arm 106 and the lower knuckle arm 107 for transportation respectively in the transportation process; when in use, the upper knuckle arm 106 and the lower knuckle arm 107 are assembled into a complete arm support and then connected with a vehicle body to realize the functions of lifting, loading and unloading.
In an alternative scheme of this embodiment, the cross section of the space surrounded by the plurality of upper-section beams 104 is tapered from the end where the upper-section beam 104 is connected with the lower-section beam 105 to the direction of the other end of the upper-section beam 104; the cross section of the space surrounded by the plurality of lower-section beams 105 is tapered in the direction from one end of the lower-section beam 105 connected to the upper-section beam 104 to the other end of the lower-section beam 105.
In the embodiment, the whole arm support is of a structure with a thick middle part and two thin ends, so that the aim of maintaining the strength of the whole structure of the arm support is fulfilled; on the other hand, the top end of the arm support is thin so as to be connected with the arm head 102 with a small size, and the bottom end of the arm support is thin so as not to occupy too much space of the vehicle body.
In the optional scheme of this embodiment, the number of the upper-section beams 104 is four, the cross section of the beam structure formed by enclosing the four upper-section beams 104 is square, the stress of the four upper-section beams 104 is equal, and the bending of the upper-section beams 104 caused by excessive local pressure is prevented. The number of the lower section beams 105 is also correspondingly set to be four, the four lower section beams 105 form two supports 108 which are parallel to each other, each support 108 comprises two lower section beams 105, the distance between the two lower section beams 105 belonging to the same support 108 gradually approaches from the direction from one end of the lower section beam 105 connected with the upper section beam 104 to the other end of the lower section beam 105, the two supports 108 are connected with the vehicle body, namely, two connection points are formed, and the occupation of the vehicle space is further reduced.
In an alternative scheme of the embodiment, a plurality of cross beams 109 are arranged at the end part of the lower section beam 105 close to the vehicle body; the plurality of cross beams 109 are arranged at intervals along the length direction of the lower section beams 105, and the cross beams 109 are connected with two adjacent lower section beams 105; the plane where the connection point of the upper beam section 104 and the lower beam section 105 is located is taken as a reference plane, and the cross beam 109 is parallel to the reference plane.
It should be noted that, because the two brackets 108 are parallel, the cross beam 109 disposed between the two brackets 108 is perpendicular to the brackets 108; the two lower beams 105 in the bracket 108 are at an angle, and the cross beam 109 is not perpendicular to the lower beams 105.
In the embodiment, as the bottom of the arm support is supported at two points, in order to make the structure at the position more stable and increase the strength at the position, a plurality of cross beams 109 are arranged on the arm support close to the vehicle body, and the cross beams 109 and the diagonal support members 103 work together to make the device more stable.
In an alternative solution of this embodiment, the cross beam 109 is formed by any one of a rectangular tube, H-shaped steel, channel steel, i-shaped steel, and angle steel. Preferably, the cross beam 109 is made of a rectangular tube, and the bending resistance of the rectangular tube is higher than that of a circular tube under the condition of the same cross-sectional area; and by adopting the pipe, the operation of processing the intersecting line of the end of the circular pipe when the circular pipe is processed is avoided, and the complexity of the manufacturing process and the manufacturing cost are reduced.
Example two
The arm support in the second embodiment is an improvement on the basis of the above embodiment, technical contents disclosed in the above embodiment are not described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in the second embodiment.
In an optional scheme of the embodiment, a reinforcing rib plate 110 is further arranged at the joint of the cross beam 109 and the lower section beam 105, and the reinforcing rib plate 110 is adopted at a key position to increase the strength so as to prevent the weld joint from slipping.
In an optional scheme of this embodiment, the boom further includes a first reinforcing beam 111 and a second reinforcing beam 112; the first reinforcing beam 111 is used for connecting the cross beam 109 and the lower section beam 105 to form a triangular connecting structure; the second reinforcing beam 112 is used to connect two cross beams 109 that are located opposite to each other.
In this embodiment, in order to prevent the instability of the quadrilateral structure formed by the cross beam 109 and the lower section beam 105, the cross beam 109 is reinforced by using the first reinforcing beam 111 and the second reinforcing beam 112 at key positions, so as to further increase the stability of the arm support.
In an optional scheme of this embodiment, the arm support further includes two connecting lugs 113; the connecting lug 113 is connected with the two lower section beams 105 of the bracket 108, and the connecting lug 113 is provided with a connecting hole 114 for connecting a vehicle body.
In this embodiment, a pin hole is formed in the vehicle body, and the connecting hole 114 formed in the connecting lug 113 can be connected with the pin hole through a pin shaft to connect the arm support with the vehicle body, so as to realize the functions of lifting and loading and unloading.
EXAMPLE III
An embodiment of the application provides a crawler crane, which includes the boom according to any one of the embodiments, and therefore, all beneficial technical effects of the boom according to any one of the embodiments are achieved, and further description is omitted here.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application. Moreover, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments.
Claims (10)
1. The arm support is used for a crawler crane and is characterized by comprising an arm support main body and an arm head;
the arm support main body is of a truss structure, and the truss structure comprises a plurality of longitudinal beams and a plurality of diagonal supporting pieces;
the longitudinal beams are arranged at intervals and are surrounded to form a beam structure, a plurality of inclined supporting pieces are connected between every two adjacent longitudinal beams, and the inclined supporting pieces and the longitudinal beams form a triangular connecting structure; one ends of the longitudinal beams are used for being connected with a body of the crawler crane, and the other ends of the longitudinal beams are connected with the arm head;
the longitudinal beam and the inclined support piece are formed by any one of a rectangular pipe, H-shaped steel, channel steel, I-shaped steel and angle steel.
2. The boom of claim 1, wherein the longitudinal beams comprise an upper section beam and a lower section beam which are detachably connected;
one end of each upper section beam, which is far away from the lower section beam, is connected with the arm head, and a plurality of inclined supporting pieces are connected between every two adjacent upper section beams to form an upper section arm;
one end, far away from the upper section beam, of each lower section beam is connected with the vehicle body, and a plurality of inclined supporting pieces are connected between every two adjacent lower section beams to form a lower section arm.
3. The arm support according to claim 2, wherein the cross section of the space surrounded by the upper section beams is gradually reduced from the end of the upper section beam connected with the lower section beam to the other end of the upper section beam;
and the section of a space surrounded by the lower section beams is gradually reduced from one end of the lower section beams connected with the upper section beams to the other end of the lower section beams.
4. The arm support according to claim 3, wherein the number of the upper section beams is four, and the cross section of a beam structure formed by the four upper section beams in a surrounding manner is square;
the number of the lower section beams is four, and the four lower section beams form two parallel brackets; the support comprises two lower section beams, and the distance between the two lower section beams belonging to the same support is gradually reduced from the end, connected with the upper section beam, of the lower section beam to the other end of the lower section beam.
5. The arm support according to claim 4, characterized in that the end part of the lower section beam close to the vehicle body is provided with a plurality of cross beams;
the plurality of cross beams are arranged at intervals along the length direction of the lower section beams, and the cross beams are connected with two adjacent lower section beams; and taking a plane where the connection point of the upper section beam and the lower section beam is located as a reference plane, wherein the cross beam is parallel to the reference plane.
6. The boom according to claim 5, characterized in that the cross beam is formed by any one of rectangular pipes, H-shaped steel, channel steel, I-shaped steel and angle steel.
7. The arm support according to claim 5, wherein a reinforcing rib plate is further arranged at the joint of the cross beam and the lower section beam.
8. The boom of claim 5, further comprising a first reinforcing beam and a second reinforcing beam;
the first reinforcing beam is used for connecting the cross beam and the lower section beam to form a triangular connecting structure;
the second reinforcing beam is used for connecting the two cross beams which are opposite in position.
9. The boom of claim 4, further comprising two attachment lugs;
the connecting lug is connected with the two lower section beams of the support, and the connecting lug is provided with a connecting hole for connecting the vehicle body.
10. Crawler crane, comprising a boom according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021818375.6U CN212425221U (en) | 2020-08-26 | 2020-08-26 | Cantilever crane and crawler crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021818375.6U CN212425221U (en) | 2020-08-26 | 2020-08-26 | Cantilever crane and crawler crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212425221U true CN212425221U (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021818375.6U Active CN212425221U (en) | 2020-08-26 | 2020-08-26 | Cantilever crane and crawler crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212425221U (en) |
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- 2020-08-26 CN CN202021818375.6U patent/CN212425221U/en active Active
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