CN111252680A

CN111252680A - Super-lifting counterweight amplitude changing device and crane

Info

Publication number: CN111252680A
Application number: CN202010185021.0A
Authority: CN
Inventors: 郭晓晨; 丁良; 刘涛
Original assignee: Sany America Inc
Current assignee: Zhejiang Sany Equipment Co Ltd; Sany America Inc
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-06-09

Abstract

The invention provides a super-lifting counterweight amplitude changing device and a crane, wherein the super-lifting counterweight amplitude changing device comprises a first folding arm, a second folding arm, a third folding arm, a first driving piece and a second driving piece, wherein the first folding arm is rotationally connected with the second folding arm, and the first driving piece is used for driving the second folding arm to rotate relative to the first folding arm; the second folding arm is connected with the third folding arm in a rotating mode, and the second driving piece is used for driving the third folding arm to rotate relative to the second folding arm. The super-lift counterweight amplitude variation device has a large super-lift radius change range and a wide application range.

Description

Super-lifting counterweight amplitude changing device and crane

Technical Field

The invention relates to the field of engineering machinery, in particular to a super-lift counterweight amplitude changing device and a crane.

Background

The super-lift device of the crane needs to use the super-lift luffing mechanism to push the super-lift counterweight when the super-lift radius is changed, and the super-lift counterweight usually has a larger weight and often exceeds 100 tons, so that a structure with certain structural strength and rigidity needs to be used, and the super-lift counterweight is pushed by the luffing mechanism to change the super-lift radius.

Researches show that the super-lifting luffing mechanism of the existing crane has the following defects:

the application range is narrow.

Disclosure of Invention

The invention aims to provide a super-lift counterweight amplitude changing device and a crane, which have wide application range, not only can provide larger super-lift radius, but also can form smaller super-lift radius after being folded so as to work in a narrow area.

The embodiment of the invention is realized by the following steps:

in a first aspect, the present embodiment provides a super-lift counterweight luffing device, including:

the folding device comprises a first folding arm, a second folding arm, a third folding arm, a first driving piece and a second driving piece, wherein the first folding arm is rotatably connected with the second folding arm, and the first driving piece is used for driving the second folding arm to rotate relative to the first folding arm; the second folding arm is connected with the third folding arm in a rotating mode, and the second driving piece is used for driving the third folding arm to rotate relative to the second folding arm.

In an alternative embodiment, the first folding arm is in rotational engagement with the second folding arm about a first axis, and the second folding arm is in rotational engagement with the third folding arm about a second axis, the first axis being parallel to the second axis.

In an alternative embodiment, the first driving member is configured as a linear telescopic assembly, one end of the first driving member is rotatably connected to the first folding arm, and the other end of the first driving member is rotatably connected to the second folding arm.

In an alternative embodiment, the second driving element is configured as a linear telescopic assembly, one end of the second driving element is rotatably connected to the second folding arm, and the other end of the second driving element is rotatably connected to the third folding arm.

In an alternative embodiment, the first drive member is provided as one of a cylinder assembly, a cylinder assembly and a screw drive assembly.

In an alternative embodiment, the second drive member is provided as one of a cylinder assembly, a cylinder assembly and a screw drive assembly.

In an alternative embodiment, the number of first drive members is plural; the number of the second driving pieces is multiple.

In an alternative embodiment, the first folding arm is a truss structure or a box structure; the second folding arm is of a truss structure or a box structure; the third folding arm is of a truss structure or a box structure.

In an alternative embodiment, the second folding arm is provided with a first locking portion and the third folding arm is provided with a second locking portion, the first locking portion being adapted to be coupled to the second locking portion so as to restrict the second folding arm from rotating relative to the third folding arm.

In a second aspect, embodiments provide a crane, comprising:

the superlift counterweight luffing apparatus of any of the preceding embodiments.

The embodiment of the invention has the beneficial effects that:

in conclusion, this embodiment provides a super-lift counter weight becomes width of cloth device, including rotate the first folding arm, the second folding arm and the third folding arm of connection in proper order, first folding arm and second folding arm can rotate relatively in order to adjust the angle between the two. The second folding arm and the third folding arm can rotate relatively to adjust the angle between the two folding arms. When the super-lifting configuration amplitude changing device changes super-lifting diameter changing, for example, when a large super-lifting radius is needed, the first driving piece drives the second folding arm to be far away from the first folding arm to rotate, the angles of the first folding arm and the second folding arm are gradually increased, similarly, the second driving piece drives the third folding arm to be far away from the second folding arm to rotate, the angle between the second folding arm and the third folding arm is gradually increased, and finally the end part of the third folding arm is located at the position farthest from the first folding arm, so that the maximum super-lifting radius is obtained. When the required smaller super-starting radius is needed, the first driving piece drives the second folding arm to be close to the first folding arm to rotate, the angle between the first folding arm and the second folding arm is gradually reduced, and after the minimum angle is reduced, the angle between the first folding arm and the second folding arm cannot be continuously reduced, namely the minimum super-starting radius which can be realized by the existing amplitude changing device is also obtained. In this embodiment, when the first folding arm and the second folding arm rotate to the minimum angle therebetween, the second driving element may further drive the third folding arm to rotate close to the second folding arm, and the angle between the third folding arm and the second folding arm is gradually reduced, that is, the angle between the third folding arm and the first folding arm is further reduced. Therefore, the super-lift counterweight amplitude variation device has the advantage of wide application range.

The embodiment also provides a crane, which comprises the superlift configuration amplitude variation device, and the superlift diameter variation device has a wide variation range and a wide application range of the crane.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a super-lift configured horn device in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural view of the super-lift deployed horn in a collapsed state in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a crane and a super lift counterweight according to an embodiment of the present invention (the super lift radius is largest);

fig. 4 is a schematic structural diagram (minimum super lift radius) of a crane and a super lift counterweight according to an embodiment of the present invention.

Icon:

001-a crane; 100-super-lifting counterweight amplitude changing device; 110-a first folding arm; 111-a first hinge position; 112-a second hinge position; 120-a second folding arm; 121-a third hinge position; 122-fourth hinge position; 123-a first locking part; 130-a third folding arm; 131-fifth hinge position; 132-a sixth hinge position; 133-a second locking portion; 140-a first drive member; 150-a second drive member; 200-a body; 002-super-lifting weight.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present embodiment provides a super-lift counterweight luffing device 100, which is used for changing a super-lift radius to meet the hoisting requirements of a super-lift counterweight 002 in different environments, and the super-lift counterweight luffing device 100 has a wide adjustable diameter-changing range and a wide application range.

Referring to fig. 1, in the present embodiment, the super-lift counterweight 002 amplitude changing device includes a first folding arm 110, a second folding arm 120, a third folding arm 130, a first driving member 140 and a second driving member 150, the first folding arm 110 is rotatably connected to the second folding arm 120, and the first driving member 140 is configured to drive the second folding arm 120 to rotate relative to the first folding arm 110; the second folding arm 120 is pivotally connected to the third folding arm 130, and the second driving member 150 is used to drive the third folding arm 130 to pivot relative to the second folding arm 120.

In this embodiment, when the super-lift configuration luffing device changes the super-lift variable diameter, for example, when a large super-lift radius is required, the first driving element 140 drives the second folding arm 120 to rotate away from the first folding arm 110, the angles of the first folding arm 110 and the second folding arm 120 gradually increase, and similarly, the second driving element 150 drives the third folding arm 130 to rotate away from the second folding arm 120, the angle between the second folding arm 120 and the third folding arm 130 gradually increases, and finally, the end of the third folding arm 130 is located at the farthest position from the first folding arm 110, so as to obtain the maximum super-lift radius. Referring to fig. 2, when a smaller super-start radius is required, the first driving member 140 drives the second folding arm 120 to rotate close to the first folding arm 110, the angle between the two is gradually decreased, and after the minimum angle is decreased, the angle between the first folding arm 110 and the second folding arm 120 cannot be further decreased, that is, the minimum super-start radius that can be achieved by the conventional luffing apparatus. In this embodiment, when the first folding arm 110 and the second folding arm 120 rotate to the minimum angle therebetween, the second driving element 150 may further drive the third folding arm 130 to rotate close to the second folding arm 120, and the angle between the third folding arm 130 and the second folding arm 120 is gradually decreased, that is, the angle between the third folding arm 130 and the first folding arm 110 is further decreased, and when the third folding arm 130 rotates to the minimum angle with the second folding arm 120, at this time, the distance between the end of the third folding arm 130 and the first folding arm 110 is closest, the super-lift radius is minimum, and the super-lift counterweight device 100 in this state is compact in structure and small in size, so as to adapt to the lifting operation in a narrower area. Therefore, the super-lift weight luffing device 100 of the present embodiment has the advantage of a wide application range.

In this embodiment, it should be noted that the number of the folding arms may not be limited to three, but may also be four, five, six, or the like, a plurality of folding arms are sequentially connected in a rotating manner, and adjacent folding arms are connected in a driving manner through a driving element.

Further, adjacent folding arms define an axis, and adjacent folding arms rotate about the respective axes. When the quantity of folding arm is three and above, many axis parallel arrangement, the assembly of the folding arm of being convenient for, and become the width of cloth device and when lifting super lift counter weight 002, become the width of cloth device atress more balanced, be difficult for turning on one's side or slope. Meanwhile, after the folding arms are folded, a smaller super-lifting radius can be obtained. In other words, in the present embodiment, the first folding arm 110 and the second folding arm 120 are rotationally engaged about a first axis, and the second folding arm 120 and the third folding arm 130 are rotationally engaged about a second axis, the first axis being parallel to the second axis.

In addition, the number of the driving pieces between two adjacent folding arms is set as required, for example, the number of the driving pieces between two adjacent folding arms can be one, two or three, etc. Obviously, the number of actuators between any adjacent folding arms may vary. For example, the number of the first actuators 140 for driving the first folding arm 110 and the second folding arm 120 to rotate may be two, and the number of the second actuators 150 for driving the second folding arm 120 and the third folding arm 130 to rotate may be one. The number and the position of the driving parts can be set as required, and are not listed in the embodiment.

It should be understood that the folding arm may be a truss structure or a box structure. That is, the first folding arm 110 may be a truss structure or a box structure; the second folding arm 120 may be a truss structure or a box structure; the third folding arm 130 may be a truss structure or a box structure. Obviously, in other embodiments, the folding arms may have other configurations. In addition, all the folding arms may be truss structures or box-type structures, and of course, the structures of all the folding arms may not be completely the same, for example, at least two folding arms of the plurality of folding arms are truss structures and box-type structures, respectively, which are not listed in this embodiment.

In this embodiment, the example in which the super-lift weight luffing apparatus 100 includes three folding arms will be described.

Referring to fig. 1 and 2, optionally, the first folding arm 110, the second folding arm 120, and the third folding arm 130 are all configured as a truss structure.

Referring to fig. 1, optionally, the first folding arm 110 is provided with two first hinge positions 111 and two second hinge positions 112, the two first hinge positions 111 are respectively located at two sides of the first folding arm 110 in the width direction, the two second hinge positions 112 are respectively located at two sides of the first folding arm 110 in the width direction, and the first hinge positions 111 and the second hinge positions 112 are located at two ends of the first folding arm 110 in the length direction. Two first articulation points 111 are used for articulation with the crane 001 body 200.

Optionally, two third hinge positions 121 and two fourth hinge positions 122 are disposed on the second folding arm 120, and the two third hinge positions 121 are located on two sides of the second folding arm 120 in the width direction. Two fourth hinge positions 122 are located on both sides of the second folding arm 120 in the width direction, and the third hinge position 121 and the fourth hinge position 122 are located on both sides of the second folding arm 120 in the length direction.

Optionally, the third folding arm 130 is provided with two fifth hinge positions 131 and two sixth hinge positions 132, and the two fifth hinge positions 131 are located at two sides of the second folding arm 120 in the width direction. Two sixth hinge positions 132 are located on both sides in the width direction of the second folding arm 120, and the fifth hinge position 131 and the sixth hinge position 132 are located on both sides in the length direction of the second folding arm 120. Two sixth hinge locations 132 are used for connection with the superlift configuration.

In this embodiment, the two second hinge locations 112 on the first folding arm 110 are respectively hinged with the two third hinge locations 121 on the second folding arm 120; the two fourth hinge locations 122 on the second folding arm 120 are hinged to the two fifth hinge locations 131 on the third folding arm 130, respectively.

Referring to fig. 1, in other embodiments, optionally, two first locking portions 123 are further disposed on the second folding arm 120, and the two first locking portions 123 are close to the third folding arm 130 and located at two sides of the second folding arm 120 in the width direction. The third folding arm 130 is further provided with two second locking portions 133, and the two second locking portions 133 are located near the second folding arm 120 and on both sides of the third folding arm 130 in the width direction. After the second folding arm 120 and the third folding arm 130 are unfolded to the maximum angle, at this time, the angle between the second folding arm 120 and the third folding arm 130 cannot be increased continuously, the first locking portion 123 and the second locking portion 133 are butted, the first locking portion 123 and the second locking portion 133 are connected by a bolt or a latch, and the second folding arm 120 and the third folding arm 130 cannot rotate relatively, so that the relative positions of the second folding arm 120 and the third folding arm 130 are kept unchanged, the positions of the second folding arm 120 and the third folding arm 130 are more stable and reliable, and the force acting on the second driving member 150 can be reduced. At this time, the second driver 150 does not operate.

In this embodiment, optionally, the first driving member 140 and the second driving member 150 may be both configured as a linear telescopic assembly. For example, the first driving member 140 is provided as one of an oil cylinder assembly, a cylinder assembly, and a screw transmission assembly; the second driving member 150 is provided as one of an oil cylinder assembly, a cylinder assembly, and a screw transmission assembly.

It should be noted that the types of the first and

second drivers

140, 150 may be different. In the present embodiment, the first driver 140 and the second driver 150 are both provided as cylinder assemblies.

Optionally, the cylinder of the first driving member 140 is hinged to the first folding arm 110, and the piston rod of the first driving member 140 is hinged to the second folding arm 120; the cylinder of the second driving member 150 is hinged to the second folding arm 120, and the piston rod of the second driving member 150 is hinged to the third folding arm 130.

Obviously, the piston rod of the first driving member 140 may be hinged to the first folding arm 110, and the cylinder of the first driving member 140 may be hinged to the second folding arm 120. Similarly, the piston rod of the second driving member 150 may be hinged to the second folding arm 120, and the cylinder of the second driving member 150 may be hinged to the third folding arm 130.

The super-lift counterweight luffing device 100 provided by the embodiment has the advantages that the minimum radius of the super-lift variable diameter is small, so that the super-lift counterweight luffing device can be suitable for operation in a narrower area, and the application range is wide.

Referring to fig. 3 and 4, the present embodiment further provides a crane 001, including the superlift counterweight luffing device 100 mentioned in the above embodiments, when the crane 001 performs superlift operation, the superlift counterweight 002 has a wide range of deformable radius and a wide application range.

Optionally, the crane 001 further comprises a body 200, and the two first hinge locations 111 on the first folding arm 110 are simultaneously hinged with the body 200.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A super-lift counterweight luffing device, comprising:

the folding device comprises a first folding arm (110), a second folding arm (120), a third folding arm (130), a first driving piece (140) and a second driving piece (150), wherein the first folding arm (110) is rotatably connected with the second folding arm (120), and the first driving piece (140) is used for driving the second folding arm (120) to rotate relative to the first folding arm (110); the second folding arm (120) is rotatably connected to the third folding arm (130), and the second driving member (150) is configured to drive the third folding arm (130) to rotate relative to the second folding arm (120).

2. The super-lift counterweight luffing apparatus of claim 1, wherein:

the first folding arm (110) and the second folding arm (120) are in running fit around a first axis, the second folding arm (120) and the third folding arm (130) are in running fit around a second axis, and the first axis is parallel to the second axis.

3. The super-lift counterweight luffing apparatus of claim 1, wherein:

the first driving piece (140) is set as a linear telescopic assembly, one end of the first driving piece (140) is rotatably connected with the first folding arm (110), and the other end of the first driving piece (140) is rotatably connected with the second folding arm (120).

4. The super-lift counterweight luffing apparatus of claim 1, wherein:

the second driving piece (150) is set as a linear telescopic assembly, one end of the second driving piece (150) is rotatably connected with the second folding arm (120), and the other end of the second driving piece (150) is rotatably connected with the third folding arm (130).

5. The super-lift counterweight luffing apparatus of claim 1, wherein:

the first driving member (140) is set to be one of an oil cylinder assembly, a cylinder assembly and a screw rod transmission assembly.

6. The super-lift counterweight luffing apparatus of claim 1, wherein:

the second driving piece (150) is set to be one of an oil cylinder assembly, a cylinder assembly and a screw rod transmission assembly.

7. The super-lift counterweight luffing apparatus of claim 1, wherein:

the number of the first driving members (140) is multiple; the number of the second driving members (150) is multiple.

8. The super-lift counterweight luffing apparatus of claim 1, wherein:

the first folding arm (110) is of a truss structure or a box structure; the second folding arm (120) is of a truss structure or a box structure; the third folding arm is of a truss structure or a box structure.

9. The super-lift counterweight luffing apparatus of claim 1, wherein:

the second folding arm (120) is provided with a first locking portion (123), the third folding arm (130) is provided with a second locking portion (133), and the first locking portion (123) is used for being connected with the second locking portion (133) so as to limit the second folding arm (120) to rotate relative to the third folding arm (130).

10. A crane, characterized in that the crane (001) comprises:

the superlift counterweight luffing apparatus (100) of any of claims 1-9.