WO2023173621A1

WO2023173621A1 - Truss arm joint, truss arm and operation machine

Info

Publication number: WO2023173621A1
Application number: PCT/CN2022/101588
Authority: WO
Inventors: 李利斌; 张扬; 徐金
Original assignee: 浙江三一装备有限公司
Priority date: 2022-03-15
Filing date: 2022-06-27
Publication date: 2023-09-21
Also published as: CN114772478A; CN114772478B

Abstract

A truss arm joint, comprising two half arms (1), wherein extending directions of the two half arms (1) are parallel to each other, and distribution directions of the two half arms (1) are perpendicular to the extending directions of the half arms (1); and a connecting assembly, which is arranged between the two half arms (1) and comprises a locking member (3) and at least two connectors (2), wherein two ends of the connectors (2) are respectively rotatably connected to the two half arms (1), the rotating axis is perpendicular to the distribution directions of the two half arms (1), the locking member (3) can be switched between a first state in which the connectors (2) can rotate relative to the half arms (1) and a second state in which the locking member (3) restrains the connectors (2) from rotating relative to the half arms (1). The present invention further relates to a truss arm and an operation machine. By means of the arrangement, the locking member is switched to the first state, and the connectors rotate relative to the half arms, such that the distance between the two half arms can be adjusted, and the overall transverse width of the truss arm joint is reduced, thereby solving the problem of the transportation of an arm support of a crawler crane in the prior art being limited.

Description

Truss arm sections, truss arms and operating machinery

Cross-references to related applications

This application claims priority to the Chinese patent application with application number 202210254302.6 and the invention name "truss boom joint, truss boom and working machinery" submitted on March 15, 2022, which is fully incorporated herein by reference.

Technical field

The present application relates to the technical field of engineering machinery, and in particular to a truss arm arm section, a truss arm and an operating machine.

Background technique

Large-tonnage and ultra-large-tonnage crawler cranes have relatively high load-carrying capacity requirements, so the width of their booms is relatively large. However, since road transportation regulations have clear restrictions on the width of transported objects, if the width of the boom exceeds the specified limit, the transportation cost will increase, and it may even become impossible to transport.

Therefore, how to solve the problem of restricted boom transportation of crawler cranes existing in the prior art has become an important technical problem to be solved by those skilled in the art.

Contents of the invention

The present application provides a lattice boom section, a truss arm and a working machine to solve the problem in the prior art that the boom transportation of a crawler crane is limited.

This application provides a truss arm section, including:

Two half-arms, the extending directions of the two half-arms are parallel to each other, and the distribution direction of the two half-arms is perpendicular to the extending direction of the half-arms;

A connecting component is provided between the two half-arms. The connecting component includes a locking piece and at least two connecting pieces. The two ends of the connecting piece are respectively rotationally connected to the two half-arms, and the rotation axis is connected with the two half-arms. The distribution directions of the two half-arms are vertical, and the locking member can switch between a first state and a second state. In the first state, the connecting member can rotate relative to the half-arms, In the second state, the locking component limits the rotation of the connecting component relative to the half arm.

According to a truss arm section provided in this application, the two ends of the locking member are respectively connected to the two half-arms, and the extension direction of the connecting member and the extension direction of the half-arms are both in line with the extension direction of the half-arms. The extending direction of the locking member has an included angle, and at least one end of the locking member is detachably connected to the half arm.

According to a truss arm section provided by the present application, the locking member is a rod-shaped structure, and both ends of the locking member and the half arm are hinged through a first pin;

The connecting piece is a rod-shaped structure, and both ends of the connecting piece and the half-arm are hingedly connected through a second pin.

According to a truss arm section provided in this application, a first connecting seat is provided on the opposite side of the two half arms, and the first connecting seat and the locking member are hingedly connected through a first pin. The first end of the first pin has a first limiting structure, and the second end is provided with a first clamping member. The first clamping member is detachably connected to the first pin. The first limiting structure The structure and the first clamping part are configured to restrict the first pin from falling off the first connecting seat and the locking part.

According to a truss arm section provided in this application, a second connecting seat is provided on the opposite side of the two half arms, and the second connecting seat and the connecting piece are hingedly connected through a second pin. The first end of the two pins has a second limiting structure, and the second end is provided with a second clamping piece. The second clamping piece is detachably connected to the second pin. The second limiting structure The second clamping component is configured to restrict the second pin from falling off the second connecting seat and the connecting component.

According to a truss arm section provided by this application, two locking members are provided, and the two locking members are distributed along the extension direction of the half arm.

According to a truss arm section provided by this application, the connecting piece is perpendicular to the rotation axis of the half-arm, the distribution direction of the two half-arms, and the extension direction of the half-arm;

The connecting components are provided in two groups, and the two groups of connecting components are distributed along the direction of the rotation axis of the connecting piece relative to the half arm.

According to a truss arm section provided by this application, the half arm includes:

Two main chords are arranged parallel to each other and spaced apart, and the ends of the main chords are provided with connecting portions for connecting with adjacent truss arm sections;

Two first web bars are spaced apart and parallel to the main chord bar, and the connecting piece and the locking piece are connected to the first web bar;

A plurality of second web bars are respectively provided between the adjacent main chord bars, between the adjacent first web bars, and between the adjacent main chord bars and the first web bars.

This application also provides a truss arm, including the above-mentioned truss arm arm section.

This application also provides a working machine, including the above-mentioned truss arm.

The truss arm section provided by this application includes two half-arms and a connecting component disposed between the two half-arms. The connecting component includes at least two connecting pieces and a locking piece. The connecting piece is disposed between the two half-arms. And it is rotationally connected with the half-arm to form a parallelogram structure. By rotating the connecting piece relative to the half-arm, the distance between the two half-arms can be adjusted, thereby adjusting the overall lateral width of the truss arm section. The above-mentioned locking member can be switched between the first state and the second state. When assembling the truss arm, after the connecting member is rotated to the target position relative to the half arm, the locking member is switched to the second state to limit the connecting member. Rotate relative to the half arms to ensure the stability of the connection structure between the two half arms. When it is necessary to transport the truss arm section, the locking member is switched to the first state, the connecting piece is rotated relative to the half-arm, and the truss arm section is folded to reduce the distance between the two half-arms and thereby reduce the distance between the two half-arms. The overall lateral width of the truss arm section. In this setting, according to the width and size requirements of the transported goods according to road transportation regulations, the transverse dimensions of the two half-arms are designed, and combined with the overall width and size requirements of the truss arm arm joints, the size of the connecting piece is further designed, so that the truss arm arm joints can It meets the load-carrying capacity requirements and also meets the road transportation requirements, and solves the problem of limited transportation of the boom of the crawler crane existing in the existing technology.

Furthermore, since the truss arm provided by the present application is provided with the truss arm segment as described above, it also has various advantages as described above.

Furthermore, since the working machine provided by the present application is provided with the truss arm as described above, it also has various advantages as described above.

Description of the drawings

In order to more clearly illustrate the technical solutions in this application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are the drawings used in the present application. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of the truss arm section provided by this application in an assembled state;

Figure 2 is an enlarged view of I in Figure 1;

Figure 3 is a front view of the truss arm section in Figure 1;

Figure 4 is a top view of the truss arm section in Figure 1;

Figure 5 is a side view of the truss arm section in Figure 1;

Figure 6 is a schematic structural diagram of the truss arm section provided by this application in a transportation state;

Figure 7 is an enlarged view of Y in Figure 6;

Figure 8 is a front view of the truss arm section in Figure 6;

Figure 9 is a top view of the truss arm section in Figure 6;

Figure 10 is a side view of the truss arm section in Figure 6;

Figure 11 is a schematic structural diagram of the half arm provided by this application;

Figure 12 is a schematic diagram of the connection structure between two adjacent truss arm sections provided by this application;

FIG. 13 is an enlarged view of X in FIG. 12 .

Reference signs:

1: Half arm; 2: Connecting piece; 3: Locking piece;

4: The first pin; 5: The second pin; 6: The first connecting seat;

7: The first clamping piece; 8: The second connecting seat; 9: The second clamping piece;

10: Main chord; 11: Connecting part; 12: First web rod;

13: The second web rod; 14: The third pin; 15: The third clamping piece.

Detailed ways

In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application. , not all examples. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The truss arm section of the present application will be described below with reference to FIGS. 1 to 13 .

As shown in Figures 1 to 13, the truss arm section provided by the embodiment of the present application includes a connecting component and two half arms 1. Specifically, the extension directions of the two half arms 1 are parallel to each other, and the two half arms 1 The distribution direction of 1 is perpendicular to the extension direction of half arm 1. There is a gap between the two half arms 1, and the connecting component is arranged between the two half arms 1.

The above-mentioned connection assembly includes a locking member 3 and at least two connecting members 2. The two ends of the connecting member 2 are rotationally connected to the two half-arms 1 respectively, and the rotation axis is perpendicular to the distribution direction of the two half-arms 1. The structural dimensions of the two half-arms 1 are the same, and the structural dimensions of each connecting piece 2 are the same. The two half-arms 1 and the connecting piece 2 form a parallelogram structure. By rotating the connecting piece 2 relative to the half-arm 1, the two half-arms 1 can be adjusted. The distance between arms 1 thereby adjusts the overall lateral width of the truss arm section.

The above-mentioned locking member 3 can switch between the first state and the second state. When the locking member 3 switches to the first state, the connecting member 2 can rotate relative to the half arm 1. When the locking member 3 switches to the second state, , the locking member 3 restricts the rotation of the connecting member 2 relative to the half arm 1.

When assembling the truss arm, after the connector 2 is rotated relative to the half arm 1 to the target position, the locking member 3 is switched to the second state to limit the rotation of the connector 2 relative to the half arm 1 to ensure that the two half arms 1 The stability of the connection structure between them.

The above target position is the position where the distance between the two half arms 1 can be maximized, for example, the extension direction of the connector 2 is perpendicular to the extension direction of the half arm 1 .

When the truss arm section needs to be transported, the locking member 3 is switched to the first state, the connecting member 2 is rotated relative to the half arm 1, and the truss arm section is folded to reduce the distance between the two half arms 1 , thereby reducing the overall lateral width of the truss arm section.

In this setting, according to the width and size requirements of the transported goods according to the road transportation regulations, the lateral dimensions of the two half arms 1 are designed, and combined with the overall width size requirements of the truss arm arm joints, the size of the connector 2 is further designed, so that the truss arm arm joints It can meet both the load-carrying capacity requirements and the road transportation requirements, and solves the problem of limited boom transportation of crawler cranes existing in the prior art.

In the embodiment of the present application, the two ends of the locking member 3 are connected to the two half-arms 1 respectively, and the extension direction of the connecting member 2 and the extension direction of the half-arms 1 both have an included angle with the extension direction of the locking member 3 , the locking part 3 can form a triangular structure or a trapezoidal structure together with the half arm 1 and the connecting part 2 to limit the rotation of the connecting part 2 relative to the half arm 1, that is, the locking part 3 is in the second state, refer to Figures 1 to 2 5.

At least one end of the locking member 3 is detachably connected to the half arm 1, so that one end of the locking member 3 is disconnected from the half arm 1, or both ends of the locking member 3 are disconnected from the half arm 1. The connecting piece 2 is allowed to rotate relative to the half arm 1, that is, the locking piece 3 is in the first state, refer to Figures 6 to 10 (the second clamping piece 9 is not shown in Figures 6 to 10).

That is, by disassembling and assembling the locking part 3, the locking part 3 can be switched between the second state and the first state. The process is simple, the disassembly and assembly are convenient, and the manufacturing cost is low.

It should be noted that after the locking member 3 is removed, it can be placed in the state shown in Figure 6 using a crane or other machinery.

The number of the above-mentioned connectors 2 is determined according to the length of the half arm 1 in the extending direction.

In the embodiment of the present application, the above-mentioned locking parts 3 are provided with two, and the two locking parts 3 are distributed along the extension direction of the half arm 1. When assembling the truss arm arm section or the truss arm arm section, the two locking parts 3 are used. The component 3 limits the relative position between the connecting component 2 and the half-arm 1, increases the connection strength between the two half-arms 1, and is conducive to improving the load-bearing capacity and stability of the truss arm section. Specifically, two locking parts 3 can be respectively provided at both ends of the half arm 1 .

In this embodiment, the above-mentioned locking member 3 is configured as a rod-shaped structure, so that both ends of the locking member 3 are hinged with the two half-arms 1 through the first pin 4 respectively. Correspondingly, the above-mentioned connecting piece 2 is also configured as a rod-shaped structure, so that both ends of the connecting piece 2 are hinged with the two half arms 1 through the second pin 5 respectively.

The locking member 3 and the connecting member 2 only bear the force along their own axis, which is beneficial to improving the strength and load-bearing capacity of the truss arm section.

In the specific embodiment, a first connecting seat 6 is provided on the opposite side of the two half arms 1. The first connecting seat 6 is provided with a through hole, and the end of the locking member 3 is provided with a corresponding through hole, so that the first connecting seat 6 is provided with a through hole. A pin 4 passes through the through hole on the first connecting seat 6 and the through hole at the end of the locking member 3 at the same time. The first end of the first pin 4 has a first limiting structure. The first pin 4 penetrates the first connecting seat 6 and the end of the locking member 3 and is detachably connected to the first clamping member 7 .

Two connecting lug plates are respectively provided at both ends of the above-mentioned locking member 3. The two connecting lug plates are parallel to each other. There is a gap between the two connecting lug plates for the first connecting seat 6 to extend into.

The above-mentioned first limiting structure may be, but is not limited to, a flange provided on the first end of the first pin 4 .

The above-mentioned first clamping member 7 may be, but is not limited to, a retaining spring.

In a specific embodiment, the first clamping member 7 can also be provided in the form of a pin. As shown in Figure 2, a through hole extending in the radial direction is provided at the second end of the first pin 4. The member 7 is bent into an annular structure. One end of the first clamping member 7 is provided with a hook, and the other end passes through the through hole at the second end of the first pin 4 and then engages with the hook. In this way, it is convenient to disassemble and assemble the first clamping member 7 .

In the same way, a second connecting seat 8 is provided on the opposite side of the two half arms 1. The second connecting seat 8 is provided with a through hole. The end of the connecting piece 2 is provided with a corresponding through hole, so that the second pin 5 pass through the through hole on the second connecting seat 8 and the through hole at the end of the connecting piece 2 at the same time. The first end of the second pin 5 has a second limiting structure. The second pin 5 penetrates the second connecting seat 8 and the end of the connecting piece 2 and is detachably connected to the second clamping piece 9 .

Two connecting lug plates are respectively provided at both ends of the above-mentioned connecting member 2. The two connecting lug plates are parallel to each other. There is a gap between the two connecting lug plates for the second connecting seat 8 to extend into.

The second limiting structure may be, but is not limited to, a flange provided on the first end of the second pin 5 .

The above-mentioned second clamping member 9 may be, but is not limited to, a retaining spring. The above-mentioned second clamping member 9 may also be provided in the form of a pin, which has the same structure as the above-mentioned first clamping member 7 and will not be described again here.

In the embodiment of the present application, the connecting member 2 is perpendicular to the rotation axis of the half-arm 1, the distribution direction of the two half-arms 1, and the extension direction of the half-arms 1. Arranging two groups of the above-mentioned connecting components, and the two groups of connecting components are distributed along the direction of the rotation axis of the connecting piece 2 relative to the half-arm 1, as shown in Figure 1, can further increase the structural strength and stability of the truss arm section.

In the embodiment of the present application, the above-mentioned half arm 1 includes two main chords 10, two first webs 12 and a plurality of second webs 13. As shown in Figure 11, the two main chords 10 are parallel and spaced apart from each other. The two first web members 12 are spaced apart and parallel to the main chord 10 . There is a distance between the first web members 12 and the main chord 10 .

The above-mentioned second web bars 13 are provided between adjacent main chords 10 , between adjacent first web bars 12 , and between adjacent main chords 10 and first web bars 12 . The end of the second web rod 13 and the main chord 10, and the end of the second web rod 13 and the first web rod 12 are all fixedly connected, and can be fixed by welding.

The first web rods 12 of the two half-arms 1 are connected to the above-mentioned connecting piece 2 and locking piece 3.

A connecting portion 11 is provided at the end of the main chord 10 for connecting with the main chord 10 of the adjacent truss arm section. The structure of two adjacent truss arm sections connected together is shown in Figure 12.

In a specific embodiment, the above-mentioned connecting portion 11 includes a connecting ear plate provided at the end of the main chord 10, and the third pin 14 can be used to hinge the adjacent ends of the main chords 10 of adjacent truss arm sections together.

Specifically, one connecting lug plate is provided at the first end of the main chord 10 , and two connecting lug plates are provided at the second end of the main chord 10 , and the two connecting lug plates are spaced apart. When connecting two adjacent truss arm sections, make the connecting lug plate at the first end of the main chord 10 of one truss arm section extend into the two second ends of the main chord 10 of the other truss arm section. Between the connecting lug plates, the third pin 14 passes through the connecting lug plates of the main chords 10 of two adjacent truss arm sections, and then is detachably connected to the third clamping member 15, see Figure 13. The structure of the third pin 14 is the same as the structure of the above-mentioned first pin 4 and the second pin 5 , and the structure of the third clamping member 15 is the same as the structure of the above-mentioned first clamping member 7 and the second clamping member 9 , which will not be described again here.

On the other hand, embodiments of the present application also provide a truss arm, including the truss arm section provided in any of the above embodiments. It has all the advantages of the above-mentioned truss arm section and will not be described in detail here. The derivation process of the beneficial effects of the truss arm in the embodiment of the present application is generally similar to the derivation process of the beneficial effects of the above-mentioned truss arm arm sections, and therefore will not be described again here.

On the other hand, embodiments of the present application also provide a working machine, which includes the truss arm in the above embodiment and has all the advantages of the above truss arm, which will not be described again here. The derivation process of the beneficial effects of the working machine in the embodiment of the present application is generally similar to the derivation process of the beneficial effects of the above-mentioned truss arm, and therefore will not be described again here.

The operating machinery in this embodiment may be a large-tonnage and super-large-tonnage crawler crane, etc.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent substitutions are made to some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims

A truss arm section includes:

Two half-arms, the extending directions of the two half-arms are parallel to each other, and the distribution direction of the two half-arms is perpendicular to the extending direction of the half-arms;

A connecting component is provided between the two half-arms. The connecting component includes a locking piece and at least two connecting pieces. The two ends of the connecting piece are respectively rotationally connected to the two half-arms, and the rotation axis is connected with the two half-arms. The distribution directions of the two half-arms are vertical, and the locking member can switch between a first state and a second state. In the first state, the connecting member can rotate relative to the half-arms, In the second state, the locking component limits the rotation of the connecting component relative to the half arm.
The truss arm section according to claim 1, wherein two ends of the locking member are respectively connected to the two half arms, and the extension direction of the connecting member and the extension direction of the half arms are both consistent with The extension direction of the locking member has an included angle, and at least one end of the locking member is detachably connected to the half arm.
The truss arm section according to claim 1 or 2, wherein the locking member is a rod-shaped structure, and both ends of the locking member and the half arm are hinged through a first pin;

The connecting piece is a rod-shaped structure, and both ends of the connecting piece and the half-arm are hingedly connected through a second pin.
The truss arm section according to claim 3, wherein a first connecting seat is provided on the opposite side of the two half arms, and the first connecting seat and the locking piece pass through the first pin. Hinged, the first end of the first pin has a first limiting structure, the second end is provided with a first clamping piece, the first clamping piece is detachably connected to the first pin, and the The first limiting structure and the first clamping member are configured to restrict the first pin from falling off the first connecting seat and the locking member.
The truss arm section according to claim 3, wherein a second connecting seat is provided on the opposite side of the two half arms, and the second connecting seat and the connecting piece are hingedly connected through a second pin. The first end of the second pin has a second limiting structure, and the second end is provided with a second clamping member. The second clamping member is detachably connected to the second pin. The second limiting structure The bit structure and the second clamping piece are configured to restrict the second pin from falling off the second connecting seat and the connecting piece.
The truss arm section according to claim 1, wherein there are two locking parts, and the two locking parts are distributed along the extension direction of the half arm.
The truss arm section according to claim 1, wherein the connecting piece is perpendicular to the rotation axis of the half-arm, the distribution direction of the two half-arms, and the extension direction of the half-arm;

The connecting components are provided in two groups, and the two groups of connecting components are distributed along the direction of the rotation axis of the connecting piece relative to the half arm.
The truss arm section according to claim 1, wherein the half arm includes:

Two main chords are arranged parallel to each other and spaced apart, and the ends of the main chords are provided with connecting portions for connecting with adjacent truss arm sections;

Two first web bars are spaced apart and parallel to the main chord bar, and the connecting piece and the locking piece are connected to the first web bar;

A plurality of second web bars are respectively provided between the adjacent main chord bars, between the adjacent first web bars, and between the adjacent main chord bars and the first web bars.
A truss arm including the truss arm section according to any one of claims 1 to 8.
A working machine includes a truss arm as claimed in claim 9.