阅读说明：本技术 折叠臂架及工程机械 (Folding arm support and engineering machinery ) 是由 徐洪勇 黄彬 史建明 于 2021-01-04 设计创作，主要内容包括：本发明提供了折叠臂架及工程机械。折叠臂架包括：下节臂,所述下节臂能够与工程机械的机身枢转连接；中间臂,所述中间臂与所述下节臂枢转连接,以在翻转至所述下节臂上方的收起位置和相对于所述下节臂展开的展开位置之间枢转；其中,所述中间臂上设置有铰链装置并且所述中间臂能够围绕所述铰链装置进行折叠,所述中间臂的翻转方向与折叠方向彼此不同。通过在两个不同方向上进行翻转和折叠,能够在运输时有效地将长臂式臂架的尺寸缩小从而搭载在工程机械的机身上。由此,使得本发明提供的折叠臂架无需拆卸,仅需简单的折叠即可进行运输,省时省力。并且本发明通过臂架折叠的方式,实现了诸如长臂架履带起重机整机的单台运输,降低了运输费用。(The invention provides a folding arm support and engineering machinery. The folding cantilever crane includes: the lower joint arm can be in pivot connection with a machine body of the engineering machinery; an intermediate arm pivotally connected to the lower link arm to pivot between a stowed position flipped over the lower link arm and a deployed position deployed relative to the lower link arm; wherein the intermediate arm is provided with a hinge device and can be folded around the hinge device, and the overturning direction and the folding direction of the intermediate arm are different from each other. The long arm type arm support can be effectively reduced in size during transportation by overturning and folding in two different directions so as to be carried on the machine body of the engineering machinery. Therefore, the folding arm support provided by the invention can be transported by simply folding without being detached, and time and labor are saved. In addition, the invention realizes the single-unit transportation of the whole machine of the crawler crane with the long arm support in a mode of folding the arm support, and reduces the transportation cost.)

1. A folding arm support is characterized by comprising:

the lower joint arm can be in pivot connection with a machine body of the engineering machinery;

an intermediate arm pivotally connected to the lower link arm to pivot between a stowed position flipped over the lower link arm and a deployed position deployed relative to the lower link arm;

wherein the intermediate arm is provided with a hinge device and can be folded around the hinge device, and the overturning direction and the folding direction of the intermediate arm are different from each other.

2. The folding arm support of claim 1, wherein the intermediate arm comprises a first arm segment portion and a second arm segment portion,

wherein the first arm segment part and the second arm segment part are pivotally connected by the hinge device, the pivot axis of the hinge device extending in the thickness direction of the intermediate arm, such that in the folded state of the intermediate arm the first arm segment part and the second arm segment part are arranged alongside one another.

3. The folding arm support of claim 2, wherein one side edge of the first arm segment portion is pivotally connected to one side edge of the second arm segment portion by the hinge device, and the other side edge of the first arm segment portion is detachably connected to the other side edge of the second arm segment portion.

4. The folding arm support of claim 2, wherein the first arm segment portion comprises a first arm segment and at least one second arm segment, the second arm segment portion comprises a third arm segment and at least one fourth arm segment,

the first arm section is connected with the third arm section in a pivoting mode through the hinge device, the second arm section is connected between the first arm section and the lower arm section, and the third arm section is connected with the fourth arm section.

5. The folding boom support of claim 4, further comprising an upper arm segment, wherein the fourth arm segment is connected between the third arm segment and the upper arm segment.

6. The folding arm support of claim 4, wherein the first arm section portion comprises a plurality of second arm sections, and adjacent second arm sections are detachably connected; the second arm section part comprises a plurality of sections of the fourth arm sections, and the adjacent fourth arm sections are detachably connected.

7. The folding arm support according to any one of claims 1 to 6, characterized by further comprising a connecting arm, wherein the lower arm comprises a first end capable of being pivotally connected with a body of a construction machine and a second end opposite to the first end,

the top of the second end is pivotally connected to the connecting arm, the top of one end of the middle arm is pivotally connected to the connecting arm, and the bottom of the second end is detachably connected to the bottom of the one end of the middle arm.

8. The folding arm support of claim 7, further comprising a first drive mechanism and a second drive mechanism,

one end of the first driving mechanism is connected with the lower arm, the other end of the first driving mechanism is connected with the connecting arm, one end of the second driving mechanism is connected with the middle arm, and the other end of the second driving mechanism is connected with the connecting arm.

9. The folding arm support of claim 8, wherein the connecting arm includes a first side and a second side opposite each other,

the top of the second end of the lower arm is pivotally connected with one end of the first side part, the top of the one end of the middle arm is pivotally connected with the other end of the first side part, the other end of the first driving mechanism is pivotally connected with one end of the second side part, and the other end of the second driving mechanism is pivotally connected with the other end of the second side part.

10. A working machine, characterized in that it comprises a fuselage and a folding boom according to any of claims 1-9, wherein the lower arm of the folding boom is pivotally connected to the fuselage.

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a folding arm support and engineering machinery.

Background

In the field of current engineering machinery, lifting machinery such as crawler cranes commonly employ a combined boom. Due to the adoption of the arm support in the form, the arm support can be used only by combining the connecting pins section by section when the hoisting machinery is transferred, and a large amount of time is needed for assembly and disassembly. In addition, the pin shaft connection combined type arm support crawler crane needs two or more than two vehicles for transportation, one transport vehicle is used for transporting the machine body, and the other transport vehicle is used for transporting the arm support. This results in higher transportation costs.

Disclosure of Invention

The invention provides a folding arm support and engineering machinery, which are used for solving the defects of too much time consumption for assembling and disassembling and too high transportation cost of a combined arm support in the prior art and achieving the effects that a long-arm support does not need to be disassembled, is convenient to transport and reduces the time consumption for assembling.

According to a first aspect of the invention, there is provided a folding boom comprising: the lower joint arm can be in pivot connection with a machine body of the engineering machinery; an intermediate arm pivotally connected to the lower link arm to pivot between a stowed position flipped over the lower link arm and a deployed position deployed relative to the lower link arm; wherein the intermediate arm is provided with a hinge device and can be folded around the hinge device, and the overturning direction and the folding direction of the intermediate arm are different from each other.

According to the invention, the intermediate arm comprises a first arm section part and a second arm section part, wherein the first arm section part and the second arm section part are pivotally connected by means of the hinge device, the pivot axis of which extends in the thickness direction of the intermediate arm, so that in the folded state of the intermediate arm the first arm section part and the second arm section part are arranged alongside one another.

According to the folding arm support provided by the invention, one side edge of the first arm section part is pivotally connected with one side edge of the second arm section part through the hinge device, and the other side edge of the first arm section part is detachably connected with the other side edge of the second arm section part.

According to the folding arm support provided by the invention, the first arm section part comprises a first arm section and at least one second arm section, and the second arm section part comprises a third arm section and at least one fourth arm section, wherein the first arm section and the third arm section are in pivot connection through the hinge device, the second arm section is connected between the first arm section and the lower arm section, and the third arm section is connected with the fourth arm section.

The folding arm support further comprises an upper section arm, and the fourth arm section is connected between the third arm section and the upper section arm.

According to the folding arm support provided by the invention, the first arm section part comprises a plurality of sections of the second arm sections, and the adjacent second arm sections are detachably connected; the second arm section part comprises a plurality of sections of the fourth arm sections, and the adjacent fourth arm sections are detachably connected.

The folding arm support provided by the invention further comprises a connecting arm, wherein the lower section arm comprises a first end capable of being in pivot connection with a machine body of the engineering machinery and a second end opposite to the first end, the top of the second end is in pivot connection with the connecting arm, the top of one end of the middle arm is in pivot connection with the connecting arm, and the bottom of the second end is detachably connected with the bottom of one end of the middle arm.

The folding arm support further comprises a first driving mechanism and a second driving mechanism, wherein one end of the first driving mechanism is connected with the lower arm, the other end of the first driving mechanism is connected with the connecting arm, one end of the second driving mechanism is connected with the middle arm, and the other end of the second driving mechanism is connected with the connecting arm.

According to the folding arm support provided by the invention, the connecting arm comprises a first side part and a second side part which are opposite to each other, wherein the top of the second end of the lower arm section is pivotally connected with one end of the first side part, the top of one end of the middle arm section is pivotally connected with the other end of the first side part, the other end of the first driving mechanism is pivotally connected with one end of the second side part, and the other end of the second driving mechanism is pivotally connected with the other end of the second side part.

According to a second aspect of the present invention, there is provided a construction machine, including a machine body and the foldable arm support as described above, wherein the lower arm of the foldable arm support is pivotally connected to the machine body.

According to the folding arm support and the engineering machinery provided by the invention, the middle arm is pivotally connected with the lower section arm, so that the middle arm can be turned to a retracted position above the lower section arm in a transportation state. Further, a hinge device is added on the middle arm, so that the middle arm can be folded around the hinge device to reduce the size of the middle arm. Therefore, the long arm type arm support can be effectively reduced in size during transportation by overturning and folding in two different directions so as to be carried on the body of the engineering machinery. Therefore, the folding arm support provided by the invention can be transported by simply folding without being detached, and time and labor are saved. In addition, the invention realizes the single-unit transportation of the whole machine of the crawler crane with the long arm support in a mode of folding the arm support, and reduces the transportation cost.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is one of schematic structural diagrams of a construction machine provided by the present invention, wherein a folding arm support is in a fully unfolded state;

FIG. 1A is an enlarged view of a portion of the embodiment of FIG. 1 at A1;

fig. 2 is a second schematic structural diagram of the construction machine provided by the present invention, wherein the middle arm of the folding arm support is pivoted to be in a folding state along the arrow direction;

fig. 3 is a top view of the embodiment of fig. 2, showing the folding arm support in a folded state;

FIG. 3A is an enlarged view of a portion of the embodiment of FIG. 3 at A2;

fig. 4 is a third schematic structural diagram of the construction machine provided by the present invention, wherein a middle arm of the folding arm support is turned over to the upper side of the lower arm;

fig. 5 is a top view of the embodiment of fig. 4, showing the folding arm support in an inverted condition;

fig. 6 is a schematic structural view of a construction machine provided by the present invention in a transportation state;

reference numerals:

100: folding the arm support; 102: a lower knuckle arm;

104: a middle arm; 106: a hinge device;

108: a first arm segment portion; 110: a second arm segment portion;

112: a first arm segment; 114: a second arm segment;

116: a third arm segment; 118: a fourth arm segment;

120: an upper knuckle arm; 122: a connecting arm;

124: a first drive mechanism; 126: a second drive mechanism;

128: a first side portion; 130: a second side portion;

200: an engineering machine; 202: a fuselage.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. 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 embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Referring to fig. 1 to 6, embodiments of the folding arm support and the engineering machine provided by the invention will be described. It should be understood that the following description is only exemplary embodiments of the present invention and does not constitute any particular limitation of the present invention.

As shown in fig. 1 to 6, an embodiment of the present invention provides a folding arm support 100 and a construction machine 200 having the folding arm support 100. In the illustrated embodiment, the work machine 200 may be, for example, a crawler crane; and the present invention will be described below with reference to a crawler crane as an example. It should be understood that the folding boom 100 of the present invention may also be applied to other similar construction machines, such as pile machines, excavators, etc., without departing from the scope of the present invention.

As shown in fig. 1 to 6, in an embodiment of the present invention, the folding arm support 100 may include a lower arm 102 and an intermediate arm 104. Specifically, lower link arm 102 may be pivotally connected to body 202 of work machine 200 such that lower link arm 102 may rotate relative to body 202 of work machine 200. Further, intermediate arm 104 may be pivotally connected to lower link arm 102, and intermediate arm 104 may pivot between a stowed position that flips over lower link arm 102 and a deployed position that is deployed relative to lower link arm 102.

As shown in fig. 1-3, intermediate arm 104 is in a deployed position relative to lower link arm 102; as shown in fig. 4-6, intermediate arm 104 is in a stowed position flipped over to above lower link arm 102. As can be seen in the illustrated embodiment, since the middle arm 104 can be flipped to the stowed position above the lower arm 102, the pivot axis of the middle arm 104 when pivoting with respect to the lower arm 102 can be understood as extending along the width of the folding arm support 100 as a whole, i.e. along the width of the work machine 200.

Further, in the embodiment of the present invention, a hinge device 106 may be further provided on the intermediate arm 104. Specifically, the intermediate arm 104 is foldable about the hinge device 106, and the flip direction and the folding direction of the intermediate arm 104 are different from each other. That is, in addition to the ability of the intermediate arm 104 to be flipped relative to the lower link arm 102, the intermediate arm 104 itself can be folded about the hinge arrangement 106, thereby enabling the size of the intermediate arm 104 to be effectively reduced in the non-operational state.

As shown in fig. 1, the intermediate arm 104 is shown in an unfolded state, in which the intermediate arm 104 is not folded; as shown in fig. 2 and 3, the intermediate arm 104 is shown in a folded condition, in which the intermediate arm is folded from the condition shown in fig. 1 in the direction of the arrow in fig. 3 to form the configuration shown in fig. 2 and 3.

In the above-described embodiment, the turning direction of the intermediate arm 104 at the time of turning and the folding direction thereof at the time of folding are different from each other. For example, the intermediate arm 104 may be folded (e.g., pivoted 180 °) in a horizontal plane from the fully unfolded state shown in fig. 1 in the direction of the arrow shown in fig. 3, so as to be folded into the folded state shown in fig. 2 and 3. The folded intermediate arm 104 may then be flipped (e.g., 180) in the folded position shown in fig. 2 and 3, i.e., flipped up from the position shown in fig. 2 and 3 to be above the lower arm 102, as shown in fig. 4 and 5.

When both the folding and flipping operations are completed, the folding boom 100 is transformed from the fully unfolded state shown in fig. 1 to the fully stowed state shown in fig. 4. In this state, as shown in fig. 6, the foldable boom 100 and the construction machine 200 can be mounted on the body of the construction machine by effectively reducing the size of the long-arm boom during transportation. Therefore, the folding arm support provided by the invention can be transported by simply folding without being detached, and time and labor are saved. In addition, the invention realizes the single-unit transportation of the whole machine of the crawler crane with the long arm support in a mode of folding the arm support, and reduces the transportation cost.

As further shown in fig. 1-3, in an embodiment of the present invention, the intermediate arm 104 may generally include a first arm segment portion 108 and a second arm segment portion 110.

Specifically, the first arm segment portion 108 and the second arm segment portion 110 may be pivotally connected together by the hinge arrangement 106 as described above. In the present embodiment, as described above, the pivot axis of the hinge device 106 may extend along the thickness direction of the middle arm 104, that is, when the folding arm support 100 is mounted on the body 202 of the working machine 200, the pivot axis of the hinge device 106 extends along the height direction of the working machine 200. In this way, when the intermediate arm 104 is in the folded state, the first arm segment portion 108 and the second arm segment portion 110 are both disposed side-by-side with each other, as shown in fig. 3.

With further reference to fig. 3, in an embodiment of the present invention, for the first arm segment portion 108 and the second arm segment portion 110, one side edge of the first arm segment portion 108 may be pivotally connected with one side edge of the second arm segment portion 110 by a hinge arrangement 106; while the other side edge of the first arm segment portion 108 may be removably attached to the other side edge of the second arm segment portion 110. Specifically, it should be understood herein that the edges as described above refer to respective edges of the first arm segment portion 108 and the second arm segment portion 110 that extend in the thickness direction of the folding arm rest 100. As can be seen in fig. 3A, in a top view, one side edge of the first arm segment portion 108 is pivotally connected to one side edge of the second arm segment portion 110 by means of a hinge arrangement 106, so that the intermediate arm 104 can be folded about the hinge arrangement 106. And the other side edge of the first arm segment portion 108 is detachably connected to the other side edge of the second arm segment portion 110 so that the other side edge is in a detached state when the intermediate arm 104 is folded; when the intermediate arm 104 is deployed to perform various operational tasks, the other side edges may be connected together by fasteners to form a unitary structure.

As further shown in fig. 1, in an embodiment of the present invention, the first arm segment portion 108 may include a first arm segment 112 and at least one second arm segment 114. Similarly, the second arm segment portion 110 may include a third arm segment 116 and at least one fourth arm segment 118.

Specifically, the first arm segment 112 may be pivotally connected to the third arm segment 116 via the hinge arrangement 106 as described above. Second arm segment 114 may be connected between first arm segment 112 and lower arm segment 102, and third arm segment 116 may be connected with fourth arm segment 118. Further, a fourth arm segment 118 may be connected between the third arm segment 116 and an upper arm segment 120 of the folding boom 100. Thereby, the complete structure of the intermediate arm 104 is formed.

In one embodiment of the present invention, the first arm segment portion 108 may include a plurality of second arm segments 114 as described above, with adjacent second arm segments 114 being detachably connected together. In this way, the number of the second arm sections 114 of the foldable boom 100 of the present invention can be selected as needed, so that the overall length of the foldable boom 100 after being unfolded can meet the engineering requirements. Similarly to the above, in the embodiment of the present invention, the second arm segment portion 110 may also include a plurality of the fourth arm segments 118 as described above, and adjacent fourth arm segments 118 may also be detachably connected together, so that the length adjustment is possible.

Referring back to fig. 1 in conjunction with fig. 1A, in an embodiment of the present invention, the folding arm support 100 may further include a connecting arm 122. Specifically, lower link arm 102 may include a first end pivotally coupled to body 202 of work machine 200 and a second end opposite the first end.

In this embodiment, as shown in FIG. 1A, the top of the second end of the lower link arm 102 may be pivotally connected to the connecting arm 122. Further, the top of one of the ends of the intermediate arm 104 may be pivotally connected to the connecting arm 122. In contrast, the bottom of the second end of lower arm 102 may be removably attached to the bottom of the aforementioned one end of intermediate arm 104.

Specifically, the top of the second end of the lower link arm 102 is pivotally connected to the connecting arm 122, such that the connecting arm 122 can pivot relative to the lower link arm 102; the connecting arm 122 is in turn pivotally connected to the top of one of the ends of the intermediate arm 104, such that the intermediate arm 104 can pivot relative to the connecting arm 122. In this way, pivoting of the intermediate arm 104 relative to the lower joint arm 102 can be achieved by providing the connecting arm 122.

Further, the bottom of the second end of the lower arm 102 is detachably connected to the bottom of the one end of the middle arm 104, and when the middle arm 104 is turned to the retracted position above the lower arm 102, the two ends are detached from each other; and when intermediate arm 104 is in the deployed position relative to lower link arm 102, the two ends are connected together. Thus, when the foldable boom 100 is unfolded to perform various operation tasks, the lower arm 102 is firmly connected with the middle arm 104 through the connecting arm 122; the lower arm 102 is directly connected to the middle arm 104, so that the foldable arm support 100 is more stable in use.

As further shown in fig. 1A, in the embodiment of the present invention, the folding arm support 100 further includes a first driving mechanism 124 and a second driving mechanism 126.

Specifically, one end of the first drive mechanism 124 may be connected to the lower link arm 102, and the other end of the first drive mechanism 124 may be connected to the connecting arm 122. In this way, the first drive mechanism 124 can be used to drive the connecting arm 122 to rotate the connecting arm 122 relative to the lower link arm 102. Similarly to the above, one end of the second driving mechanism 126 may be connected to the intermediate arm 104, and the other end of the second driving mechanism 126 may be connected to the connecting arm 122. In this way, the second drive mechanism 126 can be used to drive the intermediate arm 104 so that the intermediate arm 104 can rotate relative to the connecting arm 122.

It should be understood herein that the first and second drive mechanisms 124, 126 as described above may take any suitable configuration, such as hydraulic cylinders, pneumatic cylinders, etc. That is, the selection of the first driving mechanism 124 and the second driving mechanism 126 is not intended to limit the present invention, and any suitable structure may be used in the present invention, which may be determined according to the specific application.

Further, in embodiments of the present invention, the connecting arm 122 may include a first side 128 and a second side 130 opposite each other. In actual installation, the top of the second end of lower link arm 102 may be pivotally connected to one of the ends of first side portion 128 and the top of the aforementioned one of the ends of intermediate arm 104 may be pivotally connected to the other end of first side portion 128. In addition, the other end of the first driving mechanism 124 may be pivotally connected to one end of the second side portion 130, and the other end of the second driving mechanism 126 may be pivotally connected to the other end of the second side portion 130. In this way, the complete connection structure as shown in fig. 1A is formed.

On the other hand, the embodiment of the invention also provides the engineering machinery 200. The working machine 200 comprises a machine body 202 and the folding arm support 100 as described above. Specifically, the lower arm 102 of the folding arm support 100 may be pivotally connected to the body 202 to form the structure shown in the figures. Since the folding arm support 100 is adopted in the construction machine 200, all the advantages described above are also provided.

In summary, in the foldable boom 100 and the engineering machine 200 provided in the embodiment of the present invention, the boom can be unfolded for use without re-assembling the boom after each transition. Meanwhile, the arm support is not detached, and the arm support can be transported by using one trolley together with the machine body. Therefore, the folding arm support provided by the invention is not required to be disassembled, only needs to be simply folded, and is time-saving and labor-saving. In addition, the invention realizes the single-machine transportation of the long-arm-frame crawler crane by the way of folding the arm support, thereby reducing the transportation cost.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will 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 technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.