CN114737763A - Arm support system, control method and engineering machinery - Google Patents
Arm support system, control method and engineering machinery Download PDFInfo
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- CN114737763A CN114737763A CN202210254351.XA CN202210254351A CN114737763A CN 114737763 A CN114737763 A CN 114737763A CN 202210254351 A CN202210254351 A CN 202210254351A CN 114737763 A CN114737763 A CN 114737763A
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- boom
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims description 33
- 238000005452 bending Methods 0.000 abstract description 13
- 230000006872 improvement Effects 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 239000004744 fabric Substances 0.000 description 7
- 230000001960 triggered effect Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- 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
- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0445—Devices for both conveying and distributing with distribution hose with booms
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- 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
- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0445—Devices for both conveying and distributing with distribution hose with booms
- E04G21/0463—Devices for both conveying and distributing with distribution hose with booms with boom control mechanisms, e.g. to automate concrete distribution
Abstract
The invention provides a boom system, a control method and engineering machinery, wherein the boom system comprises: an arm support comprising a hinged end; the turntable comprises a front hinge part and a rear hinge part which are positioned at two sides of a rotation center; two ends of the lifting connecting rod are respectively hinged to the rear hinged part and the hinged end part; the rotary driving piece is used for driving the arm support to perform variable amplitude pivoting around the hinged end part; and the lifting driving piece is hinged to the front hinge part and used for driving the lifting connecting rod to rotate around the rear hinge part so as to drive the hinge end part to lift between the front hinge part and the rear hinge part. The boom system can ensure that the quality is unchanged and effectively increase the distribution height of the boom through the cooperation among the lifting driving piece, the lifting connecting rod and the rotary driving piece, is favorable for structure light weight and product competitiveness improvement, and can reduce the maximum tipping bending moment as much as possible.
Description
Technical Field
The invention belongs to the technical field of engineering machinery, and particularly relates to a boom system, a control method and engineering machinery.
Background
The tipping bending moment of the boom of the pump truck on the rotation center is an important factor for limiting the distribution range of the pump truck, and the overlarge tipping bending moment can reduce the stability of the whole pump truck and cause the pump truck to tip over, if the equipment is damaged, casualties are generated. The distribution height of the pump truck is the most important index for measuring the distribution range of the pump truck, and increasing the distribution height of the pump truck under the condition of not increasing the tipping bending moment is the hot research topic of various large pump truck main engine plants. As shown in fig. 1 and 2, the existing concrete pump truck mainly comprises a turntable and an arm support, all parts are connected through hinge point pin shafts, the length of the arm support is L, the vertical height of the arm support and the turntable connecting pin shaft from the ground is H, the horizontal distance of the arm support and the turntable connecting pin shaft from the rotation center is R, the gravity center of a full-load arm support is X from the arm support and the turntable connecting pin shaft, and the weight of a full-load arm support system is G. The maximum working height is: h + L, the radius of the cloth range is L-R1, and the maximum tipping bending moment is M-G (X-R);
after the length of the arm support and the heights of the lower vehicle and the chassis are determined, the material distribution height and the material distribution range of the pump truck are determined as the hinge point of the rotary table structure is fixed. However, the height of the lower car and the chassis is determined due to the limitation of a height regulation of the whole car, so that the increase of the cloth height can only be realized by increasing the length of the arm support, and the weight of the arm support system is inevitably increased under the condition that the structure is light and cannot be met, so that the maximum tipping bending moment of the whole car is increased, and the stability and the safety of the whole car are not facilitated.
Disclosure of Invention
The invention mainly aims to provide an arm support system, a control method and engineering machinery, and aims to solve the technical problems that the tipping bending moment is large and the material distribution height is not adjustable in the prior art.
In order to achieve the above object, the present invention provides a boom system, wherein the boom system includes: an arm support comprising a hinged end; the turntable comprises a front hinge part and a rear hinge part which are positioned at two sides of a rotation center; two ends of the lifting connecting rod are respectively hinged to the rear hinged part and the hinged end part; the rotary driving piece is used for driving the arm support to rotate around the hinged end part in an amplitude-variable manner; and the lifting driving piece is hinged to the front hinge part and used for driving the lifting connecting rod to rotate around the rear hinge part so as to drive the hinged end part to lift between the front hinge part and the rear hinge part.
In an embodiment of the invention, the lifting drive is hinged to the hinged end by a first hinge portion of the lifting link.
In an embodiment of the invention, the rotary drive is hinged to the second hinge portion of the lifting link, the lifting link is hinged to the front hinge portion by a third hinge portion, and the first hinge portion, the second hinge portion and the third hinge portion are not collinear.
In the embodiment of the invention, the lifting connecting rod is arranged in the shell of the arm support.
In an embodiment of the present invention, the lifting driving member is hinged to the fourth hinge portion of the lifting link, the rotation driving member is hinged to the turntable through the fifth hinge portion of the lifting link, and the fourth hinge portion, the fifth hinge portion and the hinge end portion are not collinear.
In the embodiment of the invention, the lifting driving part is arranged in the shell of the rotary table, and the lifting connecting rod is arranged outside the arm support.
In an embodiment of the present invention, the front hinge part and the rear hinge part are respectively provided at front and rear end portions of the turntable in correspondence.
In an embodiment of the invention, the posterior hinge is higher than the anterior hinge.
The invention further provides an arm support control method, the arm support control method is applied to the arm support system, and the arm support control method comprises the step of adjusting and controlling the working state of the lifting driving piece according to the expected material distribution height of the arm support.
In an embodiment of the present invention, the adjusting and controlling the working state of the lifting driving element according to the expected cloth height of the arm support includes:
judging that the expected material distribution height is not greater than the current material distribution height of the arm support;
maintaining the lift drive in a restrained state;
controlling the rotary driving piece to drive the arm support to be unfolded to a specified pitching angle;
judging that the expected material distribution height is greater than the current material distribution height of the arm support;
triggering the rotary driving part and the lifting driving part simultaneously.
The invention further provides engineering machinery which comprises a vehicle body and the arm support system, wherein the rotary table is arranged close to the vehicle head of the vehicle body, and the arm support extends towards the rear side of the vehicle head under the condition that the arm support is located at the horizontal position.
Through the technical scheme, the arm support system provided by the embodiment of the invention has the following beneficial effects:
when the arm support system in the embodiment is adopted for material distribution operation, whether the material distribution height of the arm support needs to be increased or not can be judged, if the material distribution height of the arm support does not need to be increased, the rotary driving piece can be triggered, the rotary driving piece drives the arm support to rotate between the horizontal position and the vertical position around the hinged end part, and the unfolding angle of the arm support is controlled; if the material distribution height of the arm support needs to be improved, the rotary driving piece and the lifting driving piece are triggered at the same time, the lifting connecting rod is driven to rotate around the rotary table, the hinged end portion is driven to ascend from the front hinged portion to the rear hinged portion, the effective material distribution height of the arm support is improved, the competitiveness of a product is improved, when the arm support is in a horizontal working condition, the hinged end portion can descend from the rear hinged portion to the front hinged portion under the condition that the length of the arm support is not changed, the horizontal distance of the arm support from a rotation center is made to be maximum, the tipping bending moment of the arm support under the horizontal working condition is made to be minimum, namely the maximum tipping bending moment is made to be minimum, and the working reliability under the working condition is guaranteed. The boom system can ensure that the quality is unchanged and effectively increase the distribution height of the boom through the cooperation of the lifting driving piece, the lifting connecting rod and the rotary driving piece, is beneficial to structure light weight and promotion of product competitiveness, and can reduce the maximum tipping bending moment as far as possible.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic structural diagram of a working condition of a vertical arm support of an engineering machine in the prior art;
fig. 2 is a schematic structural diagram of a horizontal boom working condition of an engineering machine in the prior art;
fig. 3 is a schematic structural diagram of the boom system under a horizontal working condition according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of the boom system under a vertical working condition according to an embodiment of the invention;
FIG. 5 is a schematic diagram illustrating changes in the operating conditions of the boom system according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a boom system under a horizontal working condition according to another embodiment of the invention;
fig. 7 is a schematic structural diagram of a boom system under a vertical working condition according to another embodiment of the invention;
fig. 8 is a schematic diagram of changes in the operating conditions of the boom system according to another embodiment of the present invention.
Description of the reference numerals
| Reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
41 | First hinge part |
| 1 | |
42 | |
| 11 | Hinged |
43 | |
| 12 | |
44 | |
| 2 | Rotary table | 45 | |
| 21 | |
5 | |
| 22 | Back hinge |
200 | |
| 3 | |
210 | |
| 4 | |
220 | Vehicle head |
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
The boom system according to the invention is described below with reference to the accompanying drawings.
As shown in fig. 3 to 5, in an embodiment of the present invention, a boom system 100 is provided, wherein the boom system 100 includes a boom 1 and a lifting driving member 5, the boom 1 includes a hinge end 11; the turntable 2 includes a front hinge portion 21 and a rear hinge portion 22 located at both sides of a rotation center; two ends of the lifting connecting rod 4 are respectively hinged with the rear hinge part 22 and the hinge end part 11; the rotary driving piece 3 is used for driving the arm support 1 to rotate around the hinged end part 11 in an amplitude-variable manner; the lifting driving member 5 is hinged to the front hinge portion 21 and drives the lifting link 4 to rotate about the rear hinge portion 22 to lift the hinge end portion 11 between the front hinge portion 21 and the rear hinge portion 22. The turntable 2 in this embodiment is located below the boom 1, and the boom system 100 is mainly applied to engineering machinery such as an engineering crane, a boom fire truck, a boom ascending truck, a concrete pump truck, and the like.
When the boom system 100 in this embodiment is used for material distribution, it may be first determined whether the material distribution height of the boom 1 needs to be increased, if the material distribution height of the boom 1 does not need to be increased, the rotary driving member 3 may be triggered, so that the rotary driving member 3 drives the boom 1 to rotate around the hinge end portion 11 between the horizontal position and the vertical position, and the unfolding angle of the boom 1 is controlled, and if the material distribution height of the boom 1 needs to be increased, the rotary driving member 3 and the lifting driving member 5 are triggered at the same time, and the lifting driving member 5 drives the lifting connecting rod 4 to rotate around the turntable 2, and drives the hinge end portion 11 to ascend from the front hinge portion 21 to the rear hinge portion 22, so as to increase the effective material distribution height of the boom 1, and increase the competitiveness of the product; and when the arm support 1 is in a horizontal working condition, under the condition that the length of the arm support 1 is kept unchanged, the rear hinge part 22 of the hinge end part 11 can be descended towards the front hinge part 21, so that the horizontal distance R between the arm support 1 and the rotation center is the largest, the tipping bending moment M of the arm support 1 under the horizontal working condition is the smallest, namely the largest tipping bending moment is the smallest, and the working reliability under the horizontal working condition is ensured. The boom system 100 in this embodiment can ensure the quality to be unchanged by the cooperation of the lifting driving member 5, the lifting connecting rod 4 and the rotary driving member 3, and simultaneously effectively increase the material distribution height of the boom 1, thereby being beneficial to the structure light weight and the improvement of the product competitiveness, and simultaneously being capable of reducing the maximum tipping bending moment as much as possible.
Specifically, as shown in fig. 3 and fig. 6, when the boom 1 is in a horizontal working condition, and the length L of the boom 1 is kept unchanged, R is the largest at this time, so that the working reliability under the working condition is ensured; as shown in fig. 4 and 7, for the vertical working condition of the boom 1, under the condition of keeping the length L of the boom 1 unchanged, the hinge end 11 is raised, that is, under the condition of keeping the sizes of the boom 1 and the turntable 2 unchanged, the effective material distribution height of the boom 1 is raised, and the competitiveness of the product is improved.
In the embodiment of the invention, the rotary driving member 3 and the lifting driving member 5 are both oil cylinders. The arm support 1 and the lifting connecting rod 4 can be driven through the extension and retraction of the oil cylinder, the structure installation is convenient, the hinge point stroke can be increased by selecting the rotary driving piece 3 and the lifting driving piece 5 with different strokes, and when the stroke is too large, a multi-stage oil cylinder can be selected.
Specifically, in one embodiment, the upper end of the lift driving member 5 is hinged to the hinge end portion 11 through the first hinge portion 41 of the lift link 4, and the lower end is hinged to the front hinge portion 21. In this embodiment, the lifting driving member 5 is driven by directly acting the lifting driving member 5 on the hinge end portion 11, so that the lifting connecting rod 4 can be unfolded to a maximum height which is vertical to a horizontal line, the distribution height of the arm support 1 can be increased to the maximum extent, and the product competitiveness can be improved.
In the embodiment of the present invention, the lower end of the rotary driving member 3 is hinged to the second hinge portion 42 of the lifting link 4, the upper end is hinged to the driving mounting portion 12 of the arm support 1, the lower end of the lifting link 4 is hinged to the front hinge portion 21 through the third hinge portion 43, the upper end is hinged to the hinge end portion 11, and the first hinge portion 41, the second hinge portion 42, and the third hinge portion 43 are not collinear. As shown in fig. 3 to 5, in the present embodiment, the first hinge portion 41, the second hinge portion 42, and the third hinge portion 43 form a triangular support linkage structure, which improves convenience in installation and control of the structure and also improves structural strength. In this embodiment, in order to avoid interference between the lifting link 4 and the turntable 2 and the arm support 1, the lifting link 4 is disposed in the housing of the arm support 1.
In another embodiment, as shown in fig. 6 to 8, in the embodiment of the present invention, the upper end of the lifting driving member 5 is hinged to the fourth hinge portion 44 of the lifting link 4, the lower end is hinged to the front hinge portion 21, the lower end of the rotary driving member 3 is hinged to the turntable 2 through the fifth hinge portion 45 of the lifting link 4, the upper end is hinged to the driving mounting portion 12, and the fourth hinge portion 44, the fifth hinge portion 45, and the hinge end portion 11 are not collinear. The second triangular connection structure is proposed in this embodiment, compared to the rotation driving member 3 directly acting on the hinge end 11, the lifting driving member 5 in this embodiment acts on the hinge end 11 through the lifting connecting rod 4, and the lifting connecting rod 4 and the rotation driving member 3 are hinged on the same hinge point on the turntable 2, and the boom system 100 in this embodiment is simple in structure and can facilitate the installation of the rotation driving member 3. In order to prevent interference between components, the cylinder of the lifting driving member 5 in this embodiment is disposed in the housing of the turntable 2, and the lifting link 4 is disposed outside the arm support 1.
Fig. 5 and 8 show two variation state diagrams of the lifting link 4, where L0 is a distance between the hinge end 11 and the turntable 2 under a vertical operating condition, an included angle between the lifting link 4 and a horizontal line is α 1 when the arm support 1 is under a horizontal operating condition, and a height of the hinge end 11 relative to the third hinge portion 43 is H1 — L0 × sin α 1; when the arm support 1 is in the vertical operating condition, an included angle between the lift link 4 and the horizontal line is α 2, at this time, the height of the hinge end 11 relative to the third hinge portion 43 is H2 ═ L0 × sin α 2, and a difference between the two operating conditions is H' ═ H2-H1. Different distribution heights can be realized by reasonably designing the stroke of the lifting driving piece 5 and the structural shape change angles alpha 1, alpha 2 and L0 of the lifting connecting rod 4.
In one embodiment, the front hinge portion 21 and the rear hinge portion 22 are respectively provided at front and rear end portions of the turntable 2. In this embodiment, the lifting driving member 5 and the lifting link 4 are respectively installed at the front and rear end portions of the turntable 2, so that the structural compactness of the boom system 100 can be optimized, and the installation space and the action stroke space can be fully utilized.
In the present embodiment, the rearward hinge 22 is taller than the forward hinge 21. In the embodiment, the material distribution height of the arm support 1 under the vertical working condition can be improved through the higher rear hinge part 22, and the lower front hinge part 21 can be matched with the arm support 1 to provide an accommodating space for the lifting driving part 5.
The invention also provides an arm support control method, which is applied to the arm support system 100 and comprises the step of adjusting and controlling the working state of the lifting driving part 5 according to the expected material distribution height of the arm support 1.
In one embodiment, the controlling of the working state of the lifting drive 5 according to the desired cloth height adjustment of the boom 1 comprises:
judging that the expected material distribution height is not more than the current material distribution height of the arm support 1;
keeping the lifting drive 5 in a restrained state;
controlling the rotary driving piece 3 to drive the arm support 1 to be unfolded to a specified pitching angle;
judging that the expected material distribution height is greater than the current material distribution height of the arm support 1;
simultaneously, the rotary driving piece 3 and the lifting driving piece 5 are triggered to lift the hinged end part 11 from the front hinged part 21 to the rear hinged part 22, and the unfolding angle of the arm support 1 is kept unchanged.
Before controlling the arm support 1 to act, the ECU of the whole vehicle control system firstly judges whether the arm support 1 needs to improve the cloth height. If the ECU receives an instruction that the material distribution height of the arm support 1 is not required to be increased, only the rotary driving piece 3 is triggered at the moment, the lifting driving piece 5 is in a restraining state, the height position of the hinged end part 11 of the arm support 1 is unchanged, the unfolding angle of the arm support 1 is controlled only through the action of the rotary driving piece 3, and different working condition requirements are met; if the ECU receives an instruction that the cloth height of the arm support 1 needs to be increased, the rotary driving part 3 and the lifting driving part 5 are triggered at the same time, the lifting driving part 5 is controlled to act, different cloth height requirements can be met, the rotary driving part 3 is controlled to drive through coordinated action, and the expansion angle of the arm support 1 is guaranteed to be unchanged.
The invention further provides an engineering machine 200, wherein the engineering machine 200 comprises a vehicle body 210 and an arm support system 100, the rotary table 2 is arranged close to a vehicle head 220 of the vehicle body 210, and the arm support 1 extends towards the rear side of the vehicle head 220 under the condition of being positioned at a horizontal position. In this embodiment, the turntable 2 is disposed near the vehicle head 220, and the boom 1 extends backward, so that the center of gravity of the boom 1 is disposed near the center of gravity of the vehicle body 210, thereby preventing the engineering machine 200 from tipping.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
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 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.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A boom system, characterized in that the boom system (100) comprises:
an arm support (1) comprising a hinged end (11);
a turntable (2) including a front hinge portion (21) and a rear hinge portion (22) located on both sides of a rotation center;
a lifting connecting rod (4) with two ends respectively hinged to the rear hinge part (22) and the hinge end part (11);
the rotary driving piece (3) is used for driving the arm support (1) to perform amplitude-variable pivoting around the hinged end part (11);
and the lifting driving piece (5) is hinged to the front hinge part (21) and used for driving the lifting connecting rod (4) to rotate around the rear hinge part (22) so as to drive the hinge end part (11) to lift between the front hinge part (21) and the rear hinge part (22).
2. Boom system according to claim 1, characterized in that the lifting drive (5) is hinged to the hinge end (11) by means of a first hinge (41) of the lifting link (4).
3. Boom system according to claim 2, characterized in that the rotary drive (3) is hinged to a second hinge (42) of the lifting link (4), the lifting link (4) being hinged to the front hinge (21) by a third hinge (43), the first hinge (41), the second hinge (42) and the third hinge (43) being non-collinear.
4. Boom system according to claim 3, characterized in that the lifting link (4) is built into the housing of the boom (1).
5. Boom system according to claim 1, characterized in that the lifting drive (5) is hinged to a fourth hinge (44) of the lifting link (4), the rotary drive (3) is hinged to the turntable (2) by a fifth hinge (45) of the lifting link (4), the fourth hinge (44), the fifth hinge (45) and the hinge end (11) are not collinear.
6. Boom system according to claim 5, characterized in that the lifting drive (5) is built into the housing of the turntable (2) and the lifting link (4) is external to the boom (1).
7. The boom system according to any of the claims 1-6, characterized in that the front hinge (21) and the rear hinge (22) are provided at the front and rear end of the turntable (2), respectively.
8. Boom system according to claim 7, characterized in that the rear hinge (22) is higher than the front hinge (21).
9. A boom control method applied to the boom system of any one of claims 1 to 8, wherein the control method comprises:
judging that the expected material distribution height is not more than the current material distribution height of the arm support (1);
-keeping the lifting drive (5) in a restrained state;
controlling the rotary driving piece (3) to drive the arm support (1) to be unfolded to a specified pitching angle;
judging that the expected material distribution height is larger than the current material distribution height of the arm support (1);
simultaneously triggering the rotary drive member (3) and the lifting drive member (5).
10. A working machine, characterized in that the working machine (200) comprises a vehicle body (210) and the boom system (100) of any one of claims 1 to 8, the turret (2) is arranged close to a vehicle head (220) of the vehicle body (210), and the boom (1) extends towards the rear side of the vehicle head (220) when in a horizontal position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210254351.XA CN114737763B (en) | 2022-03-15 | 2022-03-15 | Arm support system, control method and engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210254351.XA CN114737763B (en) | 2022-03-15 | 2022-03-15 | Arm support system, control method and engineering machinery |
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| CN114737763A true CN114737763A (en) | 2022-07-12 |
| CN114737763B CN114737763B (en) | 2024-01-19 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6276541B1 (en) * | 1999-02-26 | 2001-08-21 | Potain | Device for simultaneously unfolding or folding crane jib tip elements |
| CN103321424A (en) * | 2013-06-04 | 2013-09-25 | 三一汽车制造有限公司 | Boom system and concrete pump truck |
| CN103470048A (en) * | 2013-09-03 | 2013-12-25 | 三一汽车制造有限公司 | Engineering machine and luffing mechanism therefor |
| CN103526942A (en) * | 2013-09-25 | 2014-01-22 | 三一汽车制造有限公司 | Concrete pump truck and arm frame connecting mechanism thereof |
| CN103832934A (en) * | 2012-11-26 | 2014-06-04 | 徐州徐工随车起重机有限公司 | Foldable car crane |
| CN109263533A (en) * | 2018-09-26 | 2019-01-25 | 三汽车制造有限公司 | Turntable arm support system and special vehicle |
| CN208747582U (en) * | 2018-08-20 | 2019-04-16 | 湖南运想重工有限公司 | A kind of straight-arm aerial work platform |
| CN112573401A (en) * | 2020-11-30 | 2021-03-30 | 长沙中联消防机械有限公司 | Adjustable amplitude-variable hinge point system, elevating fire truck or overhead working truck |
-
2022
- 2022-03-15 CN CN202210254351.XA patent/CN114737763B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6276541B1 (en) * | 1999-02-26 | 2001-08-21 | Potain | Device for simultaneously unfolding or folding crane jib tip elements |
| CN103832934A (en) * | 2012-11-26 | 2014-06-04 | 徐州徐工随车起重机有限公司 | Foldable car crane |
| CN103321424A (en) * | 2013-06-04 | 2013-09-25 | 三一汽车制造有限公司 | Boom system and concrete pump truck |
| CN103470048A (en) * | 2013-09-03 | 2013-12-25 | 三一汽车制造有限公司 | Engineering machine and luffing mechanism therefor |
| CN103526942A (en) * | 2013-09-25 | 2014-01-22 | 三一汽车制造有限公司 | Concrete pump truck and arm frame connecting mechanism thereof |
| CN208747582U (en) * | 2018-08-20 | 2019-04-16 | 湖南运想重工有限公司 | A kind of straight-arm aerial work platform |
| CN109263533A (en) * | 2018-09-26 | 2019-01-25 | 三汽车制造有限公司 | Turntable arm support system and special vehicle |
| CN112573401A (en) * | 2020-11-30 | 2021-03-30 | 长沙中联消防机械有限公司 | Adjustable amplitude-variable hinge point system, elevating fire truck or overhead working truck |
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