CN111348565A - Detachable boom and crane - Google Patents

Abstract

The invention discloses a detachable crane boom and a crane, and relates to the technical field of cranes. The application discloses removable fraction jib loading boom includes two combination arms of interval parallel arrangement, form by the combination of at least two truss arms that set up side by side on the combination arm cross section, and form the quantity of truss arm of combination arm is the even number. Can be split or combined according to the needs, reduce the cost of transportation to reduce the equipment degree of difficulty.

Description

Detachable boom and crane

technical field

The invention relates to the technical field of cranes, in particular to a detachable boom and a crane.

Background technique

With the rapid development of the domestic economy, various industries such as steel, thermal power, petrochemical, mining, port, infrastructure are also rapidly forming their own scale, and the demand for engineering equipment is also increasing. In particular, the demand for cranes of different tonnages is becoming more and more extensive. Cranes are important handling equipment to realize mechanization, reduce manual labor and improve labor productivity, and play a pivotal role in industrial production.

For the occasions where it is necessary to hoist high-tonnage heavy objects or increase the hoisting height, the load capacity of the boom becomes the main limitation. From the experience of medium tonnage, it can be seen that only widening the width of the boom can improve the load capacity of the boom, but lifting The width of the boom is too wide, which is inconvenient for road transportation, and the transportation cost is high. It is not easy to assemble and use after transportation to the site, and has certain limitations.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a detachable boom and a crane, which can be disassembled or combined as required, so as to reduce transportation cost and assembly difficulty.

Embodiments of the present invention are implemented as follows:

In one aspect of the embodiments of the present invention, there is provided a detachable boom, comprising two combined arms arranged in parallel at intervals, wherein the cross section of the combined arms is formed by combining at least two lattice arms arranged side by side, and formed The number of lattice arms of the composite arm is an even number.

Optionally, the lattice arm includes a main chord and an auxiliary chord, the adjacent main chords are fixedly connected through the auxiliary chord, and the adjacent lattice arms are detachably connected through the main chord.

Optionally, the truss arm is a cuboid frame structure, and the main chord is a ridge forming the cuboid frame structure, and the main chord is parallel to the extension direction of the combined arm, adjacent to the main chord. A plurality of triangular structures are formed between the tubes by the auxiliary chord tubes.

Optionally, a plurality of first connecting lugs and a plurality of second connecting lugs are respectively arranged on adjacent said truss arms, and the first connecting lugs and the second connecting lugs are misaligned. It is arranged that the adjacent truss arms are connected by the first connecting lugs and the second connecting lugs.

Optionally, the first connection lug plate and the second connection lug plate are respectively arranged on the main chords of the adjacent lattice arms, and at least two main chords on the same lattice arm are arranged on the main chords. There is the first connection lug plate or the second connection lug plate.

Optionally, the first connection lug plate includes a first vertical plate and a second vertical plate arranged in parallel at intervals, and the second connection lug plate includes a third vertical plate, and the third vertical plate is used to be arranged at the Between the first vertical plate and the second vertical plate, and the first vertical plate, the second vertical plate and the third vertical plate are respectively provided with positioning holes correspondingly. The positioning holes of the plate, the third vertical plate, and the second vertical plate are inserted into the first pin in sequence to connect the first connecting lug plate and the second connecting lug plate.

Optionally, the first connection lug plate includes a first vertical plate and a second vertical plate arranged in parallel at intervals, and the second connection lug plate includes a third vertical plate and a fourth vertical plate arranged in parallel at intervals, and the The third vertical plate is used to be arranged between the first vertical plate and the second vertical plate, or the fourth vertical plate is used to be arranged between the first vertical plate and the second vertical plate , and the first vertical plate, the second vertical plate, the third vertical plate and the fourth vertical plate are respectively provided with positioning holes for inserting the first pin, so that the first vertical plate The connection ear plate is connected with the second connection ear plate.

Optionally, opposite ends of the main chord are respectively provided with a first connection part and a second connection part, and the adjacent lattice arms in the extension direction of the combined arm pass through the first connection part and the second connection part. The second connection part is connected.

Optionally, the first connecting part and the second connecting part are respectively provided with connecting holes for inserting the second pin.

Another aspect of the embodiments of the present invention provides a crane, including a slewing support and the detachable boom as described in any one of the above, wherein the two combined arms of the detachable boom are respectively connected to The swivel bracket is connected.

The beneficial effects of the embodiments of the present invention include:

The detachable boom and the crane provided by the embodiments of the present invention can ensure the hoisting height and the hoisting strength of hoisting high-tonnage heavy objects through two combined arms arranged in parallel at intervals. The combined arm is formed by the combination of at least two side-by-side lattice arms. During the road transportation, the combined arm can be split into multi-section lattice arms for transportation. After transporting to the site, only the lattice arms are fixed side by side and assembled to form the structure. The required combination arm is enough, and the assembly is simple and convenient. In order to ensure the stability of the combined arm formed by the combination, the number of the truss arm needs to be an even number, so as to avoid low support strength in some assembly areas, which is beneficial to improve the load capacity of the combined arm. By adopting the above-mentioned form, it can be disassembled or combined as required, so as to reduce the transportation cost and the difficulty of assembly.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

1 is one of the structural schematic diagrams of a detachable boom provided by an embodiment of the present invention;

Fig. 2 is the second structural schematic diagram of the detachable boom provided by the embodiment of the present invention;

3 is one of the schematic structural diagrams of the connection between the first connection lug plate and the second connection lug plate according to an embodiment of the present invention;

Fig. 4 is the second structural schematic diagram of the connection between the first connection lug plate and the second connection lug plate provided by the embodiment of the present invention;

5 is a schematic structural diagram of a side-by-side connection of lattice arms provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of the connection of the lattice arms along the extension direction of the combined arms according to the embodiment of the present invention.

Icons: 100-split boom; 110-combination arm; 120-truss arm; 122-main chord; 1221-first connection part; 1223-second connection part; 1225-connection hole; 124-pair Chord; 126-first connecting lug; 1262-first vertical plate; 1264-second vertical plate; 128-second connecting lug; 1282-third vertical plate; 1284-fourth vertical plate; 130-first A pin shaft.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. Furthermore, the terms "first", "second", etc. are only used to differentiate the description and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arrangement" and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or Connected integrally; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Referring to FIG. 1 , the present embodiment provides a detachable boom 100 , including two combined arms 110 arranged in parallel at intervals, and the cross section of the combined arms 110 is formed by combining at least two lattice arms 120 arranged side by side, And the number of the lattice arms 120 forming the combined arm 110 is an even number.

It should be noted that, first, the separation distance L between the two combined arms 110 can be flexibly set according to actual needs. Generally speaking, when the lateral width of the formed combined arms 110 is wide, the separation distance L is relatively large. . By adopting the above method, the stability between the two combined arms 110 can be increased, which facilitates smooth hoisting.

Second, the number of the lattice arms 120 forming the cross section of the combined arm 110 can be set to two, four or six, which is not specifically limited in the present application, as long as the required hoisting requirements can be met. In addition, it needs to be clarified that the present application adopts the form of the combined arm 110, which is not a simple patchwork of a plurality of lattice arms 120. After the assembly is completed in the above-mentioned form, the mechanical properties of the combined arm 110 can be greatly improved, so that the combined Arm 110 has a higher load capacity.

Third, when there are multiple lattice arms 120 forming the cross section of the combined arm 110, for example, when there are six lattice arms 120 forming the cross section of the combined arm 110, the combined arm 110 can be split as required , that is, a combined arm 110 with six cross-sections can be split into two or four combined arms 110 (please refer to FIG. 1 and FIG. 2 ) respectively. In this way, it is possible to reduce the A large number of man-hours also make it more convenient to split and use.

Fourth, the lattice arm 120 of the present application can adopt a quadrangular prism frame structure or a hexagonal prism frame structure. When the quadrangular prism frame structure is adopted, it is more convenient to combine the lattice arms 120 into the combined arm 110 . When the hexagonal prism frame structure is adopted, the number of effective supports of the lattice arm 120 can be increased in a limited space, which is beneficial to better enhance the structural strength of the combined arm 110 .

The detachable boom 100 provided by the embodiment of the present invention can ensure the hoisting height and the hoisting strength of hoisting high-tonnage heavy objects by two combined arms 110 arranged in parallel at intervals. The combined arm 110 is formed by combining at least two lattice arms 120 arranged side by side. During road transportation, the combined arm 110 can be split into multi-section lattice arms 120 for transportation. After transporting to the site, only the lattice arms 120 need to be fixed side by side. And it is only necessary to assemble to form the required combination arm 110, and the assembly is simple and convenient. In order to ensure the stability of the combined arm 110 in use, the number of the lattice arms 120 needs to be an even number, so as to avoid low support strength in part of the assembly area, which is beneficial to increase the load capacity of the combined arm 110 . By adopting the above-mentioned form, it can be disassembled or combined as required, so as to reduce the transportation cost and the difficulty of assembly.

As shown in FIG. 2 , the lattice arm 120 includes a main chord 122 and an auxiliary chord 124 . The adjacent main chords 122 are fixedly connected through the auxiliary chords 124 , and the adjacent lattice arms 120 are detachably connected through the main chords 122 .

Specifically, both the main chord 122 and the auxiliary chord 124 can be combined with steel pipes to form the truss arm 120, wherein the specification of the main chord 122 is larger than that of the auxiliary chord 124, that is, the diameter of the main chord 122 is larger than that of the auxiliary chord The diameter of the tube 124. The adjacent main chords 122 are fixedly connected through the auxiliary chords 124, which may be fixedly connected by welding. In this way, a single lattice arm 120 can be integrated. When it is necessary to assemble the combined arm 110, the main chords 122 of the adjacent truss arms 120 at the side-by-side positions can be fixedly connected by fasteners, such as snaps, or fastening bolts, etc., and the above forms are used to facilitate assembly. The disassembly makes the lattice arm 120 constituting the combined arm 110 more versatile.

As shown in FIG. 2 , in a feasible embodiment of the present application, the truss arm 120 is a cuboid frame structure, and the main chord 122 is a flute forming a cuboid frame structure, and the main chord 122 and the extension direction of the combined arm 110 are parallel to each other. A plurality of triangular structures are formed between adjacent main chords 122 through auxiliary chords 124 .

Specifically, the rectangular parallelepiped frame structure is the quadrangular prism frame structure mentioned in the previous embodiment, and the rectangular parallelepiped frame structure has 12 ridges, wherein every four ridges are parallel to each other. In this application, the four ridges parallel to the extension direction of the combined arm 110 The main chord 122 is used to ensure the strength of the truss arm 120, and other chords can be connected and fixed by the auxiliary chord 124. In addition, a plurality of auxiliary chords 124 are arranged between two adjacent main chords 122, and a preset included angle is set between the auxiliary chords 124 and the main chords 122, so that the The two adjacent auxiliary chords 124 and the main chord 122 form a triangular structure (please refer to FIG. 2 ), so that the stability of the lattice arm 120 is stronger.

As shown in FIG. 3 and FIG. 5 , a plurality of first connecting lugs 126 and a plurality of second connecting lugs 128 are respectively provided on adjacent lattice arms 120 at intervals, and the first connecting lugs 126 and the second connecting lugs 126 The truss arms 120 are staggered, and the adjacent truss arms 120 are connected by the first connecting lugs 126 and the second connecting lugs 128 .

Specifically, when two adjacent lattice arms 120 are arranged side by side for connection, the connection and fixation can be performed by the first connection lugs 126 on one of the lattice arms 120 and the second connection lugs 128 on the other lattice arms 120 . In order to avoid the interference of the first connecting lugs 126 and the plurality of second connecting lugs 128 on the adjacent two lattice arms 120 when the lattice arms 120 are arranged side by side, the first connecting lugs 126 and the second connecting lugs 128 are arranged side by side. It is necessary to dislocate between them to facilitate normal assembly and fixation. In addition, in order to ensure the stability when the connection is fixed, the first connection lugs 126 and the second connection lugs 128 are correspondingly arranged in multiple groups, for example, can be arranged in four groups, five groups or six groups, etc., according to a single truss The length of the arm 120 can be set flexibly, as long as it can satisfy the required connection strength.

As shown in FIG. 3 , the first connecting lugs 126 and the second connecting lugs 128 are respectively disposed on the main chords 122 of adjacent lattice arms 120 , and are disposed on at least two main chords 122 on the same lattice arm 120 There is a first connection lug 126 or a second connection lug 128 .

Specifically, since the diameter of the main chord pipe 122 is larger, the force it can bear is also larger, and the first connecting lug plate 126 and the second connecting lug plate 128 are arranged on the main chord pipe 122 to ensure the stability of the connection, which is convenient for The lattice arms 120 are combined to form the desired combined arms 110 . In addition, it should be noted that the combined number of the lattice arms 120 on the cross-section of the combined arms 110 may be two, four or six, etc., in order to ensure that the adjacent lattice arms 120 form a stable Therefore, at least two main chord pipes 122 on the same lattice arm 120 are required to be provided with a first connection lug 126 or a second connection lug 128 so as to be connected and fixed with each other.

As shown in FIG. 3 , one of the ways in which the first connecting lug 126 and the second connecting lug 128 are connected is as follows: the first connecting lug 126 includes a first vertical plate 1262 and a second vertical plate 1264 arranged in parallel and spaced apart. The two connecting lugs 128 include a third vertical plate 1282, the third vertical plate 1282 is arranged between the first vertical plate 1262 and the second vertical plate 1264, and the first vertical plate 1262, the second vertical plate 1264 and the third vertical plate 1262 The vertical plates 1282 are respectively provided with positioning holes, and the first pins 130 are inserted into the positioning holes of the first vertical plate 1262 , the third vertical plate 1282 and the second vertical plate 1264 in order to connect the first connecting lugs 126 to the second vertical plate 1264 . Connection between the connection lugs 128 .

Specifically, in this embodiment, the main chord 122 and the auxiliary chord 124 can be rectangular tubes or cylindrical tubes. When rectangular tubes are used, the first vertical plate 1262 , the second vertical plate 1264 and the third vertical plate 1282 are respectively provided with rectangular grooves, so that the first connecting lugs 126 and the second connecting lugs 128 can be better fitted with the main chord 122 and then welded and fixed to ensure the connection strength. Similarly, when a cylindrical tube is used, the first vertical plate 1262 , the second vertical plate 1264 and the third vertical plate 1282 are respectively provided with arc-shaped grooves, so as to facilitate the first connection lugs 126 and the second connection lugs 128 It can be welded and fixed after better fitting with the main chord 122 to ensure the connection strength.

After the first connecting lug 126 and the second connecting lug 128 are aligned at a specific position, the first pin 130 can be inserted into the positioning hole to realize the connection and fixation of the two adjacent truss arms 120. For stability, a spring plug can be inserted into the through hole of the insertion end of the first pin shaft 130 and fixed, and the disassembly is simple and convenient.

As shown in FIG. 4 , the second connection form of the first connection lug 126 and the second connection lug 128 is as follows: the first connection lug 126 includes a first vertical plate 1262 and a second vertical plate 1264 arranged in parallel at intervals. The two connecting lugs 128 include a third vertical plate 1282 and a fourth vertical plate 1284 arranged in parallel at intervals, and the third vertical plate 1282 is used to be disposed between the first vertical plate 1262 and the second vertical plate 1264, or the fourth vertical plate 1284 is used to be disposed between the first vertical plate 1262 and the second vertical plate 1264, and the first vertical plate 1262, the second vertical plate 1264, the third vertical plate 1282 and the fourth vertical plate 1284 are respectively provided with positioning A hole for inserting the first pin shaft 130 to connect the first connecting lug 126 and the second connecting lug 128 .

Specifically, using the form of double vertical plates can enhance the strength of the connection. For example, the first connecting lug plate 126 includes a first vertical plate 1262 and a second vertical plate 1264 arranged in parallel at intervals, and the second connecting lug plate 128 includes The third vertical plate 1282 and the fourth vertical plate 1284 are arranged in parallel at intervals. When the third vertical plate 1282 is used to be disposed between the first vertical plate 1262 and the second vertical plate 1264, the first vertical plate 1262, the third vertical plate 1282, the second vertical plate 1264 and the fourth vertical plate 1284 are arranged in sequence , and only using two vertical plates to clamp one vertical plate has better connection strength. Similarly, the form of double vertical plates in this embodiment can also adopt the form in which the third vertical plate 1282, the first vertical plate 1262, the fourth vertical plate 1284 and the fifth vertical plate are arranged in sequence, as long as the dislocation can be ensured, so that the You can connect normally. After the first connecting lug 126 and the second connecting lug 128 are aligned at a specific position, the first pin 130 can be inserted into the positioning hole to realize the connection and fixation of the two adjacent truss arms 120. For stability, a spring plug can be inserted into the through hole of the insertion end of the first pin shaft 130 and fixed, and the disassembly is simple and convenient.

It should be noted that the number of vertical plates is not as good as possible. The forms in Figure 3 and Figure 4 are the two preferred solutions. Multiple sets of such settings are used to ensure the connection strength and stability of the connection. If the first The first connecting lug 126 or the second connecting lug 128 uses a large number of vertical plates, which is inconvenient for positioning during assembly, and will lead to excessive lengthening of the first pin 130, which affects the stability of the first pin 130 when it is fixed. .

As shown in FIG. 5 and FIG. 6 , opposite ends of the main chord 122 are respectively provided with a first connecting part 1221 and a second connecting part 1223 , and the adjacent lattice arms 120 in the extending direction of the combined arm 110 are connected by the first connection The part 1221 and the second connection part 1223 are connected.

Specifically, for the main chords 122 of the same truss arm 120 , the arrangement forms of the first connecting portion 1221 and the second connecting portion 1223 at both ends of each main chord 122 should be consistent, so as to ensure that the truss arm 120 is in the combined arm 110 When combined in the extension direction, the first connecting part 1221 of one of the two lattice arms 120 adjacent in the longitudinal direction and the second connecting part 1223 of the other lattice arm 120 can be normally connected, and the connection form can refer to the figure 6. The number of lattice arms 120 arranged in the extension direction of the combined arm 110 can be flexibly set according to actual needs, so as to meet the needs of different hoisting heights.

As shown in FIG. 5 and FIG. 6 , the first connecting portion 1221 and the second connecting portion 1223 are respectively provided with connecting holes 1225 for inserting the second pin.

Specifically, when the truss arm 120 is assembled and fixed in the vertical direction, that is, along the extension direction of the assembly arm 110, after the first connecting part 1221 and the second connecting part 1223 are aligned at specific positions, the first connecting part 1221 and the second connecting part 1223 can The two pin shafts are inserted into the connection holes 1225 to realize the connection and fixation of the two adjacent truss arms 120 in the extension direction of the combined arm 110. In order to ensure the stability of the connection, a spring bolt is inserted into the through hole of the insertion end of the second pin shaft and fixed. That's it, easy to disassemble.

The embodiment of the present invention also discloses a crane, which includes a slewing support, and the detachable boom 100 in the foregoing embodiments. Wherein, the two combined arms 110 of the detachable boom 100 are respectively connected with the slewing support. The crane includes the same structure and benefits as the split boom 100 in the previous embodiment. The structure and beneficial effects of the detachable boom 100 have been described in detail in the foregoing embodiments, and will not be repeated here.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A detachable crane boom is characterized by comprising two combined arms arranged in parallel at intervals, the cross section of each combined arm is formed by combining at least two truss arms arranged side by side, and the number of the truss arms forming the combined arm is even.

2. The detachable boom of claim 1, wherein the truss arms comprise a main chord tube and a secondary chord tube, adjacent main chord tubes are fixedly connected by the secondary chord tube, and adjacent truss arms are detachably connected by the main chord tube.

3. The detachable boom of claim 2, wherein the truss arm is a rectangular parallelepiped frame structure, the main chord is a ridge forming the rectangular parallelepiped frame structure, the main chord is parallel to the extension direction of the combined arm, and a plurality of triangular structures are formed between adjacent main chords through the secondary chord.

4. The detachable crane boom according to claim 2 or 3, wherein a plurality of first connecting ear plates and a plurality of second connecting ear plates are respectively arranged on adjacent truss arms at intervals, the first connecting ear plates and the second connecting ear plates are arranged in a staggered manner, and the adjacent truss arms are connected through the first connecting ear plates and the second connecting ear plates.

5. The detachable boom according to claim 4, wherein the first connecting ear plate and the second connecting ear plate are respectively disposed on the main chords of the adjacent truss arms, and the first connecting ear plate or the second connecting ear plate is disposed on at least two main chords of the same truss arm.

6. The detachable cargo boom according to claim 4, wherein the first connecting ear plate comprises a first vertical plate and a second vertical plate which are arranged in parallel at intervals, the second connecting ear plate comprises a third vertical plate, the third vertical plate is arranged between the first vertical plate and the second vertical plate, the first vertical plate, the second vertical plate and the third vertical plate are respectively provided with a positioning hole correspondingly, and a first pin is sequentially inserted into the positioning holes of the first vertical plate, the third vertical plate and the second vertical plate to connect the first connecting ear plate and the second connecting ear plate.

7. The detachable cargo boom according to claim 4, wherein the first connecting ear plate comprises a first vertical plate and a second vertical plate which are arranged in parallel at intervals, the second connecting ear plate comprises a third vertical plate and a fourth vertical plate which are arranged in parallel at intervals, the third vertical plate is used for being arranged between the first vertical plate and the second vertical plate, or the fourth vertical plate is used for being arranged between the first vertical plate and the second vertical plate, and the first vertical plate, the second vertical plate, the third vertical plate and the fourth vertical plate are respectively provided with a positioning hole in correspondence to insert a first pin shaft so as to connect the first connecting ear plate and the second connecting ear plate.

8. The detachable boom according to claim 3, wherein opposite ends of the main chord member are provided with a first connection part and a second connection part, respectively, and the adjacent truss arms in the extension direction of the combined boom are connected by the first connection part and the second connection part.

9. The detachable boom according to claim 8, wherein the first connecting portion and the second connecting portion are respectively provided with a connecting hole for inserting a second pin.

10. A crane comprising a slewing frame and a splittable boom according to any one of claims 1-9, wherein two combined arms of the splittable boom are each connected to the slewing frame.

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