CN114772484A - Arm support device and operation machine - Google Patents

Arm support device and operation machine Download PDF

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Publication number
CN114772484A
CN114772484A CN202210432209.XA CN202210432209A CN114772484A CN 114772484 A CN114772484 A CN 114772484A CN 202210432209 A CN202210432209 A CN 202210432209A CN 114772484 A CN114772484 A CN 114772484A
Authority
CN
China
Prior art keywords
section
arm support
boom
arm
folded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210432209.XA
Other languages
Chinese (zh)
Inventor
谢世惠
李江波
刘阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sany Automobile Manufacturing Co Ltd
Original Assignee
Sany Automobile Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sany Automobile Manufacturing Co Ltd filed Critical Sany Automobile Manufacturing Co Ltd
Priority to CN202210432209.XA priority Critical patent/CN114772484A/en
Publication of CN114772484A publication Critical patent/CN114772484A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/68—Jibs foldable or otherwise adjustable in configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/84—Slewing gear
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing

Abstract

The invention relates to the technical field of operation machinery, and provides an arm support device and operation machinery. The space in the width direction of the operation machinery can be effectively utilized, the height of the whole operation machinery is not over high, the length of the whole operation machinery is not over long, and meanwhile, the arm expanding device of the arm support device can be longer, so that the conveying height of the operation machinery is improved; in addition, the width of the arm support is not required to be reduced, so that the section of the arm support is reduced to make room for arranging the increased arm support, the rigidity of the arm support is ensured, the stress of the arm support is reduced, and a longer arm support or more sections of arm supports can be arranged under the condition that the rigidity of the arm support is not lost and the stress requirement of the arm support is met.

Description

Arm support device and operation machine
Technical Field
The invention relates to the technical field of operating machinery, in particular to an arm support device and operating machinery.
Background
At present, the existing concrete arm support device has multiple folding modes, which can be divided into an R (winding type), a Z (folding type) and an RZ integrated type. At present, the folding direction of the arm support is basically a mode of folding downwards from a first section of arm support, and after folding, each section of arm support is distributed on two parallel and separated longitudinal planes, and the folding mode of the arm support device has limited arm support section number and space utilization. Due to the structural limitation of the arm support device, for a large-scale long-arm-support pump truck, the arm support is required to have a very long arm spread, so that the length of a single-section arm support needs to be set longer or the number of sections of the arm support needs to be increased, the total length or height of the whole pump truck is not in accordance with the specification, and the pump truck is not favorable for running. In order to ensure that the height of the whole vehicle is not ultrahigh, when longer arm supports are needed, the cross section of each arm support needs to be reduced, so that space is reserved for arranging more increased arm supports, and the rigidity and the stress of the arm supports are insufficient.
Disclosure of Invention
The invention provides an arm support device and an operation machine, which are used for solving the defects that the length or height of a whole pump truck is not in accordance with transportation specifications or the rigidity and stress of an arm support are not enough and are high easily caused by overlong folding of the arm support in the prior art.
The invention provides an arm support device which comprises at least six sections of arm supports which are connected in sequence and can be folded into at least three rows in sequence along the width direction of an operation machine, wherein the first section of arm support is connected with a rotary table, the first section to the fifth section of arm support occupy two rows of spaces, the sixth section of arm support is a turning arm support, and the sixth section of arm support occupies a second row of spaces and a third row of spaces.
According to the arm support device provided by the invention, the folding height of the arm support occupying the second column of space and the folding height of the arm support occupying the third column of space are less than or equal to the folding height of the arm support occupying the first column of space.
According to the arm support device provided by the invention, the third section of arm support is a turning arm support, the turning direction of the third section of arm support is the same as that of the sixth section of arm support, and the third section of arm support occupies a first column space and a second column space.
According to the arm support device provided by the invention, root end straight arm sections of the first arm support section, the second arm support section and the third arm support section occupy a first column space and are folded into an R-shaped arm support unit.
According to the arm support device provided by the invention, the tail end straight arm section of the third arm support, the fourth arm support and the fifth arm support occupy a second row of space and are folded into a Z-shaped arm support unit.
According to the arm support device provided by the invention, a sixth section of arm support comprises a first section of arm support and a second section of arm support, the first section of arm support is folded above a fifth section of arm support, the first section of arm support is connected with the fifth section of arm support, the second section of arm support is connected with the first section of arm support, and the first section of arm support or the second section of arm support is a turning arm support.
According to the arm support device provided by the invention, the maximum folding height of the second section of arm support is less than or equal to the maximum folding height of the fifth section of arm support.
According to the arm support device provided by the invention, the second section of arm support is folded above the first section of arm support, and the straight arm section at the root end of the third section of arm support is folded below the second section of arm support.
According to the arm support device provided by the invention, the arm support device comprises six sections of arm supports.
The invention also provides a working machine which comprises the arm support device.
The arm support device comprises at least six sections of arm supports, and the arm support device can be folded into at least three rows along the width direction of the operation machine when being in a folded state, so that the whole height and the whole length of the operation machine can be reduced; the sixth section of boom frame is a turning boom frame, so that the space in the width direction of the operation machine can be effectively utilized, the height of the whole operation machine is not over high, the length of the whole operation machine is not over long, and the arm spreading of the boom frame device is longer, so that the conveying height of the operation machine is improved; in addition, the width of the arm support is not required to be reduced, so that the section of the arm support is reduced to make room for arranging the increased arm support, the rigidity of the arm support is ensured, the stress of the arm support is reduced, and a longer arm support or more sections of arm supports can be arranged under the condition that the rigidity of the arm support is not lost and the stress requirement of the arm support is met.
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 perspective views of a boom apparatus provided in the present invention connected to a turntable;
fig. 2 is a second perspective view of the boom device and the rotary table provided by the present invention;
fig. 3 is one of the top views of the arm support device and the rotary table provided by the present invention;
fig. 4 is a second top view of the connection between the arm support device and the rotary table provided in the present invention;
fig. 5 is one of side views of the boom apparatus provided in the present invention;
FIG. 6 is one of the schematic views of the first arm support and the second arm support provided by the present invention in the folded state;
fig. 7 is a second schematic view of the first arm support and the second arm support provided by the invention when the first arm support and the second arm support are in a folded state;
fig. 8 is a schematic view of the first section to the fifth section of the arm support provided by the present invention in a folded state;
fig. 9 is a top view of the first arm support to the fifth arm support provided by the present invention in a folded state;
fig. 10 is one of schematic diagrams of the first section of arm support to the third section of arm support provided by the present invention in a folded state;
fig. 11 is one of top views of the first section to the third section of the arm support provided in the present invention in a folded state;
fig. 12 is a second schematic view of the first section of arm support to the third section of arm support provided by the present invention in a folded state;
fig. 13 is a second top view of the first section to the third section of the arm frame provided in the present invention in a folded state;
fig. 14 is a schematic view of a first section of arm frame from a first arm frame section to a sixth arm frame section provided by the invention when the arm frame sections are in a folded state;
fig. 15 is a top view of the first section of arm frame from the first section of arm frame to the sixth section of arm frame provided by the present invention in a folded state;
fig. 16 is a schematic view of the first section to the fourth section of the arm support provided by the present invention in a folded state;
fig. 17 is a top view of the first arm support to the fourth arm support provided in the present invention in a folded state;
fig. 18 is a perspective view of a boom apparatus provided by the present invention;
fig. 19 is a top view of the boom apparatus provided in the present invention;
fig. 20 is a second side view of the boom apparatus provided in the present invention.
Reference numerals:
1: a first section of arm support; 2: a second section of arm support; 3: a third section of arm support;
4: a fourth section of arm support; 5: a fifth section of arm support; 6: a first section of arm support;
7: a second section of arm support; 8: a turntable.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The boom device and the working machine according to the present invention will be described with reference to fig. 1 to 20.
As shown in fig. 1, the boom device provided by the invention comprises at least six sections of booms which are connected in sequence and can be folded into at least three rows in sequence along the width direction of the working machine, so as to ensure that the total length and the height of the whole working machine meet the specification.
The first arm support 1 is connected with the rotary table 8, the first arm support to the fifth arm support occupy two rows of spaces, the sixth arm support can be a turning arm support, and the sixth arm support occupies a second row of spaces and a third row of spaces. Therefore, the sixth arm support is set to be the turning arm support, so that the sixth arm support can occupy the side space of the fifth arm support 5, the arm support can be longer, the conveying height of the operation machine is improved, the whole vehicle is not over-high and not over-long, and the rigidity and stress requirements of the front five arm supports are also ensured.
According to the arrangement, the arm support device comprises at least six sections of arm supports, and when the arm support device is in a folded state, the arm support device can be folded into at least three rows along the width direction of the operation machine, so that the whole height and the whole length of the operation machine can be reduced; the sixth section of boom support is a turning boom support, so that the space in the width direction of the operation machine can be effectively utilized, the height of the whole operation machine is not over high, the length of the whole operation machine is not over long, the arm expanding of the boom support device can be longer, and the conveying height of the operation machine is improved; in addition, the width of the arm support is not required to be reduced, so that the section of the arm support is reduced to make room for arranging the increased arm support, the rigidity of the arm support is ensured, the stress of the arm support is reduced, and a longer arm support or more sections of arm supports can be arranged under the condition that the rigidity of the arm support is not lost and the stress requirement of the arm support is met.
In an alternative embodiment of the invention, the folding height of the boom occupying the second column of spaces and the third column of spaces is less than or equal to the folding height of the boom occupying the first column of spaces. Therefore, the height of the folded cantilever crane device is not over high, and the height of the whole operation machine is in accordance with the specification.
In an optional embodiment of the present invention, the third section of arm frame 3 may be a turning arm frame, and the turning directions of the third section of arm frame 3 and the sixth section of arm frame are the same. Therefore, the fourth arm support 4, the fifth arm support 5 and the sixth arm support are convenient to be positioned on the same side of the first arm support 1.
And the third section of the arm support 3 occupies the first column space and the second column space, so that the second column space and the third column space are located at the same side of the first column space.
In an optional embodiment, root end straight arm sections of the first arm support 1, the second arm support 2 and the third arm support 3 occupy a first column space, and the root end straight arm sections of the first arm support 1, the second arm support 2 and the third arm support 3 can be folded into an R-shaped arm support unit. Therefore, the height of the folded cantilever crane in the first column space can be reduced, so that the height of the whole operation machine can be reduced, and the height of the whole operation machine can meet the specification.
In an optional embodiment, the second arm support section 2 is folded above the first arm support section 1, and the root end straight arm section of the third arm support section 3 is folded below the second arm support section 2, so that the root end straight arm sections of the first arm support section 1, the second arm support section 2, and the third arm support section 3 are folded into an inverted R-shaped arm support unit. Therefore, the height of the folded first section of arm frame 1, the folded second section of arm frame 2 and the folded third section of arm frame 3 is reduced, and the overall height of the operation machine is in accordance with the specification; and the rigidity of the first section of arm support 1, the second section of arm support 2 and the third section of arm support 3 is not lost to ensure that the arm support device is not over-high or over-long after being folded, which is beneficial to improving the rigidity of the arm support device and reducing the stress of the arm support device.
In addition, in this embodiment, the straight arm sections at the root ends of the first arm support 1 and the third arm support 3 are respectively located at two opposite sides of the turntable 8. Therefore, the space around the rotary table 8 can be effectively utilized, so that the space is saved to increase the arm support, and the arm expanding length of the arm support device is increased; and the folding height of the arm support device can be reduced without losing the rigidity of the third section of the arm support 3.
It should be noted that, when the boom device is in the folded state, the height of the bottom end of the straight boom section at the root end of the third section of boom 3 is greater than or equal to the height of the bottom end of the first section of boom 1. Therefore, a certain gap can be formed between the third section of arm support 3 and the chassis of the working machine, and the third section of arm support 3 can be prevented from contacting and being mutually abraded with the chassis of the working machine in the transportation and running process of the working machine.
In an optional embodiment, the tail end straight arm section of the third arm frame 3, the fourth arm frame 4 and the fifth arm frame 5 occupy a second column space, and the tail end straight arm section of the third arm frame 3, the fourth arm frame 4 and the fifth arm frame 5 may be folded into a Z-shaped arm frame unit, specifically, the fourth arm frame 4 may be folded above the tail end straight arm section of the third arm frame 3, and the fifth arm frame 5 may be folded above the fourth arm frame 4, so that the tail end straight arm section of the third arm frame 3, the fourth arm frame 4 and the fifth arm frame 5 are folded into an inverted Z-shaped arm frame unit. Therefore, the folded cantilever crane device is not ultrahigh in height and not overlong in length after being folded, and the cantilever crane is convenient to fold and unfold.
Here, the fourth section of arm support 4 and the fifth section of arm support 5 can be folded in the side space of the first section of arm support 1 and the second section of arm support 2 through the third section of arm support 3, so that the folding height of the arm support device is not overhigh, an additional rotating device is not needed to be arranged to control the fourth section of arm support 4 and the fifth section of arm support 5 to rotate during folding, and the arm support device can be folded and unfolded only through the stretching of a stretching oil cylinder of the arm support device.
Therefore, the first section of arm support 1 to the fifth section of arm support 5 are folded into the inverted RZ-shaped arm support, the arm support is convenient to fold and unfold, the sixth section of arm support is arranged in the second column space and the third column space, the side space of the fifth section of arm support 5 can be effectively utilized, the length of the sixth section of arm support can be longer, the unfolded arm of the arm support device is longer, and the arm support device is suitable for arrangement of the light arm support under the condition that the length of the whole operation machinery is not changed. The directions of the fourth section of arm support 4, the fifth section of arm support 5 and the sixth section of arm support do not need to be adjusted through an additional rotating mechanism, folding of the arm support can be achieved only through the telescopic oil cylinder, folding and unfolding of the arm support device are facilitated, the structure is simple, operation is convenient, cost is reduced, and the conveying pipe cannot be affected in the folding and unfolding processes of the arm support device.
In a first alternative embodiment, the sixth section of the arm rest may occupy the second and third columns of space. Specifically, the sixth arm frame may be of an integrated structure, a root end straight arm section of the sixth arm frame is folded above the fifth arm frame 5, and a tail end straight arm section of the sixth arm frame is located on a side surface of the fifth arm frame 5, which is far away from the first arm frame 1, so that the tail end straight arm section of the sixth arm frame occupies a third row space.
And the height of the straight arm section at the tail end of the sixth arm support is less than or equal to the maximum height of the fifth arm support 5, so that the folded height of the sixth arm support is not overhigh, and the folded height of the arm support device is not overhigh.
In other embodiments, in order to further ensure that the folded height of the arm support device is not too high, the folded height of the root end straight arm section of the sixth arm support may be smaller than or equal to the maximum folded height of the fifth arm support 5.
In a second optional embodiment, as shown in fig. 1 to fig. 3, the sixth section of arm frame may include a first section of arm frame 6 and a second section of arm frame 7, the first section of arm frame 6 is connected to the fifth section of arm frame 5, the first section of arm frame 6 is connected to the second section of arm frame 7, specifically, a root end of the first section of arm frame 6 is rotatably connected to a tail end of the fifth section of arm frame 5, a root end of the second section of arm frame 7 is rotatably connected to a tail end of the first section of arm frame 6, and the first section of arm frame 6 may be folded above the fifth section of arm frame 5.
The first arm support 6 may be a corner arm support, the first arm support 6 occupies a second row of space and a third row of space, here, the second arm support 7 may be a straight arm support, and the second arm support 7 occupies a third row of space.
Alternatively, the second arm support 7 may be a corner arm support, and the second arm support 7 occupies a second row of space and a third row of space, where the first arm support 6 may be a straight arm support, and the first arm support 6 occupies a second row of space.
Therefore, the arm support device is beneficial to enabling the arm stretching length of the arm support device to be longer and improving the flexibility of the arm support device.
It should be noted that, the "one-section" arm support is a part of the "one-section" arm support, the multiple sections of arm supports are folded in a reversing manner in sequence, and the two sections of arm supports (i.e. the first section of arm support 6 and the second section of arm support 7) are two parts of the same section of arm support, and the two sections of arm supports are not folded mutually, and the two sections of arm supports are arranged in the same direction.
In an optional embodiment of the invention, each arm support can comprise a plurality of arm sections which are sequentially and rotatably connected end to end, namely each arm support can be formed by sequentially connecting a plurality of arm sections, so that the flexibility of the arm support device can be improved under the condition of not influencing the height of the arm support device.
In this embodiment, a telescopic cylinder is disposed between adjacent arm supports of the arm support device, one end of the telescopic cylinder is hinged to the previous arm support, and the other end of the telescopic cylinder is hinged to the next arm support, so that the telescopic cylinder can drive the next arm support to unfold or fold, and thus the arm support device can be folded and unfolded.
The arm support device provided by the invention can comprise six sections of arm supports, namely a first section of arm support 1, a second section of arm support 2, a third section of arm support 3, a fourth section of arm support 4, a fifth section of arm support 5 and a sixth section of arm support. The third section of arm support 3 and the sixth section of arm support are both turning arm supports, the turning directions of the third section of arm support 3 and the sixth section of arm support are the same, the six sections of arm supports can be folded into a main column, an auxiliary column and a tail column along the width direction of the operation machine, and root end straight arm sections of the first section of arm support 1, the second section of arm support 2 and the third section of arm support 3 are folded into inverted R-shaped arm support units in the height direction and occupy main column space; a straight arm section at the tail end of the third arm frame section 3, a fourth arm frame section 4 and a fifth arm frame section 5 are folded into an inverted Z-shaped arm frame unit along the height direction and occupy a secondary space; the sixth arm support can be a long arm support, a root end straight arm section of the sixth arm support is folded above the fifth arm support 5, and a tail end straight arm section of the sixth arm support is folded on the side surface of the fifth arm support 5 and occupies a tail space.
The invention provides an arm support device which comprises six sections of arm supports, namely a first section of arm support 1, a second section of arm support 2, a third section of arm support 3, a fourth section of arm support 4, a fifth section of arm support 5 and a sixth section of arm support, wherein the sixth section of arm support comprises a first section of arm support 6 and a second section of arm support 7, and the six sections of arm supports can be folded into three rows along the width direction of a working machine. The third section of arm support 3 is a turning arm support, root end straight arm sections of the first section of arm support 1, the second section of arm support 2 and the third section of arm support 3 occupy a first column space (main column space), and the root end straight arm sections of the first section of arm support 1, the second section of arm support 2 and the third section of arm support 3 are folded into an R-shaped arm support unit in the height direction; the tail end straight arm section of the third arm frame 3, the fourth arm frame 4 and the fifth arm frame 5 occupy a second column space (secondary column space), and the tail end straight arm section of the third arm frame 3, the fourth arm frame 4 and the fifth arm frame 5 are folded into a Z-shaped arm frame unit in the height direction; the first section of arm support 6 is folded above the fifth section of arm support 5, the first section of arm support 6 or the second section of arm support 7 can be a turning arm support, and the second section of arm support 7 can be folded on the side surface of the fifth section of arm support 5 far away from the first section of arm support 1 to occupy a third row of space (tail row space), so that the six sections of arm supports are folded into a main row, an auxiliary row and a tail row of three rows along the width direction of the operation machine, the space in the width direction of the operation machine is effectively utilized, the height of the whole vehicle of the operation machine and the length of the whole vehicle are favorably reduced, the length of an expanding arm of the arm support device can be longer, and the arm support device is suitable for arrangement of a light arm support under the condition that the length of the whole vehicle is not changed.
In addition, the maximum folding height of the fifth arm support 5 can be smaller than or equal to the maximum folding height of the second arm support 2, and the maximum folding heights of the first arm support 6 and the second arm support 7 can be smaller than or equal to the maximum folding height of the fifth arm support 5, so that the height of the arm support device after being folded can be reduced, and the height of the whole operation machine and the length of the whole operation machine can meet the specifications.
It should be noted that the width of the boom device in the folded state does not exceed the width of the chassis, so that the overall width of the operation machine is not too wide, and the operation machine is facilitated to run.
In the following, the working machine provided by the present invention is described, and the working machine described below and the boom device described above may be referred to with each other.
The working machine provided by the invention comprises the boom device, and the beneficial effects achieved by the working machine are consistent with those achieved by the boom device provided by the invention, so that the description is omitted here.
It should be noted that the working machine may be a pump truck, a crane, or other machine having an arm support.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and 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.

Claims (10)

1. The arm support device is characterized by comprising at least six sections of arm supports which are connected in sequence and can be folded into at least three rows in sequence along the width direction of a working machine, wherein the first section of arm support is connected with a turntable, the first section to the fifth section of arm support occupy two rows of spaces, the sixth section of arm support is a turning arm support, and the sixth section of arm support occupies a second row of spaces and a third row of spaces.
2. The boom apparatus of claim 1, wherein a folded height of the boom occupying the second column of spaces and the boom occupying the third column of spaces is less than or equal to a folded height of the boom occupying the first column of spaces.
3. The boom device as claimed in claim 1, wherein a third section of boom is a corner boom, the third section of boom and the sixth section of boom have the same corner direction, and the third section of boom occupies a first row of space and a second row of space.
4. The boom device of claim 3, wherein root end straight boom sections of the first, second and third boom sections occupy a first column of space and are folded into an R-shaped boom unit.
5. The boom device according to claim 3, characterized in that the tail end straight boom section of the third section of boom, the fourth section of boom and the fifth section of boom occupy a second column of space and are folded into Z-shaped boom units.
6. The boom device according to claim 1, wherein a sixth section of boom comprises a first section of boom and a second section of boom, the first section of boom is connected with the fifth section of boom, the second section of boom is connected with the first section of boom, and the first section of boom or the second section of boom is a corner boom.
7. The boom device according to claim 6, characterized in that the maximum folding height of the second section of boom is smaller than or equal to the maximum folding height of the fifth section of boom.
8. The boom apparatus of claim 4, wherein the second section of boom is folded above the first section of boom, and the root end straight boom section of the third section of boom is folded below the second section of boom.
9. The boom apparatus of claim 1, wherein the boom apparatus comprises six sections of booms.
10. A working machine, characterized in that it comprises a boom arrangement according to any of claims 1-9.
CN202210432209.XA 2022-04-22 2022-04-22 Arm support device and operation machine Pending CN114772484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210432209.XA CN114772484A (en) 2022-04-22 2022-04-22 Arm support device and operation machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210432209.XA CN114772484A (en) 2022-04-22 2022-04-22 Arm support device and operation machine

Publications (1)

Publication Number Publication Date
CN114772484A true CN114772484A (en) 2022-07-22

Family

ID=82432613

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210432209.XA Pending CN114772484A (en) 2022-04-22 2022-04-22 Arm support device and operation machine

Country Status (1)

Country Link
CN (1) CN114772484A (en)

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