CN111689409A - Pulling plate assembly, super-lifting device and crane - Google Patents
Pulling plate assembly, super-lifting device and crane Download PDFInfo
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- CN111689409A CN111689409A CN202010578447.2A CN202010578447A CN111689409A CN 111689409 A CN111689409 A CN 111689409A CN 202010578447 A CN202010578447 A CN 202010578447A CN 111689409 A CN111689409 A CN 111689409A
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- Prior art keywords
- pulling plate
- super
- pulling
- mast
- plate assembly
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Classifications
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- 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
- B66C23/72—Counterweights or supports for balancing lifting couples
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- 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
- B66C23/60—Derricks
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- 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
Abstract
The invention relates to the technical field of engineering machinery, in particular to a pulling plate assembly, a super-lifting device and a crane. A pull plate assembly comprising a first pull plate, a second pull plate, and an adjustment mechanism; one end of the first pulling plate is movably connected with one end of the second pulling plate, so that the first pulling plate can move relative to the second pulling plate with at least two degrees of freedom; the adjusting mechanism is used for enabling the length direction of the first pulling plate to deflect relative to the length direction of the second pulling plate to form the super-lifting device, and the super-lifting device comprises a super-lifting mast and the pulling plate assembly; the pulling plate assembly can be unfolded or folded along with the super lift mast. The crane comprises a crane arm and the super lifting device; one end of the pulling plate component is connected with the cargo boom, and the other end of the pulling plate component is connected with the super-lift mast. The invention can reduce or avoid the interference of torsion on the super-lifting mast.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a pulling plate assembly, a super-lifting device and a crane.
Background
The super-lift device is called super-lift for short, is a device which is arranged at the front end of a basic arm of a crane arm and is used for reducing the deformation of the crane arm so as to improve the lifting performance, and is an important component of a large-tonnage crane; the super lifting device generally comprises main components such as a super lifting mast and a pulling plate assembly. The existing large-tonnage crane mainly adopts a form that a pulling plate component is directly or indirectly connected with a super-lift mast; the hinge point between the pulling plate assembly and the super-lifting mast is positioned on the left side or the right side of the super-lifting mast, so that the pulling plate assembly is prevented from interfering with a crane boom or other parts when being retracted; however, this connection is liable to cause the superlift mast to be disturbed by torsional forces.
Disclosure of Invention
The invention aims to provide a pulling plate assembly, a super-lift device and a crane, which can solve the technical problem that a super-lift mast is interfered by torsion to a certain extent on the basis of avoiding the interference of the pulling plate assembly with a crane boom or other parts when the pulling plate assembly is folded.
The invention provides a pulling plate assembly which comprises a first pulling plate, a second pulling plate and an adjusting mechanism, wherein the first pulling plate is connected with the second pulling plate; one end of the first pulling plate is movably connected with one end of the second pulling plate, so that the first pulling plate can move relative to the second pulling plate with at least two degrees of freedom; the adjustment mechanism is configured to enable the first pulling plate to deflect relative to the second pulling plate.
In any of the above technical solutions, further, one end of the adjusting mechanism is movably connected to the first pulling plate, and the other end of the first pulling plate and the other end of the adjusting mechanism are respectively used for movably connecting to a superlift mast of a superlift device.
In any of the above technical solutions, further, one end of the first pulling plate is connected to one end of the second pulling plate through a first movable joint, and a second movable joint for connecting to a superlift mast of a superlift device is disposed at the other end of the first pulling plate.
In any of the above technical solutions, further, the first movable joint is a joint bearing, and/or the second movable joint is a joint bearing.
In any one of the above technical solutions, further, the first pulling plate can rotate relative to the second pulling plate in a first plane, and the first pulling plate can deflect relative to the second pulling plate in a second plane, where the first plane is parallel to the plate surface of the first pulling plate, and the second plane is disposed at an angle to the first plane.
In any of the above technical solutions, further, the adjusting mechanism includes a cylinder, a spring, and a pin; the spring is arranged in the cylinder barrel, the peripheral surface of the pin shaft is provided with a limiting boss, so that the pin shaft can be limited in the cylinder barrel, and the pin shaft can compress the spring; the cylinder barrel is movably connected with the first pulling plate, and the pin shaft is used for movably connecting with a super-lifting mast of the super-lifting device;
or the adjusting mechanism is an oil cylinder, a hydraulic cylinder, an air cylinder or an electric cylinder.
In any one of the above technical solutions, the pulling plate assembly further includes a folding plate group, the other end of the second pulling plate is provided with a first strip-shaped hole, one end of the folding plate group is hinged to the other end of the second pulling plate through a first hinge shaft, and the first hinge shaft can move along the length direction of the first strip-shaped hole; the length direction of the first strip-shaped hole is parallel to the length direction of the second pulling plate.
In any of the above technical solutions, further, a protection structure is disposed on the folding plate group, and the protection structure can be in contact with the second pulling plate;
and/or the folding plate group comprises a plurality of third pulling plates which are hinged in sequence.
The invention also provides a super-lifting device, which comprises a super-lifting mast and the pulling plate assembly; the pulling plate assembly can be unfolded or folded along with the super lift mast.
The invention also provides a crane, which comprises a crane boom and the super-lifting device; one end of the pulling plate component is connected with the cargo boom, and the other end of the pulling plate component is connected with the super-lift mast.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a pulling plate assembly, which comprises a first pulling plate, a second pulling plate and an adjusting mechanism; one end of the first pulling plate is movably connected with one end of the second pulling plate, so that the first pulling plate can move relative to the second pulling plate with at least two degrees of freedom; the adjustment mechanism is configured to enable the first pulling plate to deflect relative to the second pulling plate. One end of the first pulling plate is movably connected with one end of the second pulling plate, so that the first pulling plate can move relative to the second pulling plate in at least two degrees of freedom, and after the adjusting mechanism is arranged, the pulling plate assembly can be arranged in the middle of the lower side of the super-lift mast in the width direction, and the interference of torsion on the super-lift mast is reduced or avoided; when the pulling plate assembly is folded, the first pulling plate can deflect relative to the second pulling plate through the adjusting mechanism, so that the pulling plate assembly can be prevented from interfering with a crane arm or other components when being folded.
The invention also provides a super-lifting device, which comprises a super-lifting mast and the pulling plate assembly; the pulling plate assembly can be unfolded or folded along with the super lift mast. Based on the analysis, the superlift device can reduce or avoid the interference of the torsion on the superlift mast on the basis of avoiding the interference of the pulling plate assembly with the crane boom or other parts when the pulling plate assembly is retracted.
The invention also provides a crane, which comprises a crane arm and the super lifting device; one end of the pulling plate component is connected with the cargo boom, and the other end of the pulling plate component is connected with the super-lift mast. Based on the analysis, the crane can reduce or avoid the interference of the torque force on the super-lift mast on the basis of avoiding the interference of the pulling plate assembly with the crane boom or other components when the pulling plate assembly is retracted.
It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily restrictive of the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the disclosure. Together, the description and drawings serve to explain the principles of the disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of a drawbar assembly in a retracted state according to an embodiment of the invention, viewed from a first viewing angle;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
fig. 4 is a schematic view of the drawbar assembly in the stowed state according to the first embodiment of the invention, viewed from a second viewing angle;
FIG. 5 is an enlarged view of a portion of FIG. 4 at C;
fig. 6 is a schematic view of the handle assembly in the unfolded state according to the first embodiment of the present invention from a first viewing angle;
FIG. 7 is an enlarged partial schematic view of FIG. 6 at D;
FIG. 8 is a schematic view of the handle assembly in the extended position from a second perspective according to an embodiment of the present invention;
FIG. 9 is a cross-sectional view of an adjustment assembly provided in accordance with one embodiment of the present invention;
fig. 10 is a schematic structural diagram of another view angle of the adjustment assembly according to the first embodiment of the invention.
Icon:
100-a first pulling plate; 101-a second pulling plate; 102-a first movable joint; 103-a second movable joint; 104-plate surface; 105-a cylinder barrel; 106-a spring; 107-pin shaft; 108-a limit boss; 109-a hinge lug seat; 110-cylinder cover; 111-a second via; 112-bolt; 113-a guide sleeve; 114-a stop collar; 115-a first strip aperture; 116-a first hinge axis; 117-third pulling plate; 118-a guard structure; 201-a connecting shaft; 202-shaft sleeve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood 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.
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, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.
Example one
Referring to fig. 1 to 10, according to a first embodiment of the present invention, there is provided a pulling plate assembly, which includes a first pulling plate 100, a second pulling plate 101, and an adjusting mechanism; one end of the first pulling plate 100 is movably connected with one end of the second pulling plate 101, so that the first pulling plate 100 can move relative to the second pulling plate 101 with at least two degrees of freedom; the adjusting mechanism is used for enabling the first pulling plate 100 to deflect relative to the second pulling plate 101, namely when the pulling plate assembly is folded, the adjusting mechanism enables the length direction of the first pulling plate 100 to be not parallel to the length direction of the second pulling plate 101, namely the adjusting mechanism enables the plate surface of the first pulling plate to be not parallel to the plate surface of the second pulling plate; when the pulling plate assembly is unfolded, when the super-lifting mast of the super-lifting device is unfolded, the force applied to the pulling plate assembly can overcome the force of the adjusting mechanism on the first pulling plate 100, so that the length direction of the first pulling plate 100 is parallel to the length direction of the second pulling plate 101, namely the first pulling plate 100 and the second pulling plate 101 are positioned on the same straight line, and the plate surface of the first pulling plate is parallel to the plate surface of the second pulling plate. Note that, in fig. 1 to 10, the second viewing angle may be a front view; and the first viewing angle may be either a bottom or top view.
According to the pulling plate assembly provided by the embodiment, one end of the first pulling plate 100 is movably connected with one end of the second pulling plate 101, so that the first pulling plate 100 can move relative to the second pulling plate 101 at least with two degrees of freedom, and after the adjusting mechanism is arranged, the pulling plate assembly can be arranged in the middle of the lower side of the super-lift mast in the width direction, so that the interference of torsion on the super-lift mast is reduced or avoided; the first pull plate 100 is deflectable relative to the second pull plate 101 by an adjustment mechanism when the pull plate assembly is stowed, such that the pull plate assembly avoids interference with the lift arms or other components when stowed.
In an alternative scheme of this embodiment, one end of the adjusting mechanism is movably connected to the first pulling plate 100, and the other end of the first pulling plate 100 and the other end of the adjusting mechanism are respectively used for movably connecting to the superlift mast of the superlift device. This further ensures that the pulling plate assembly can be mounted in the middle of the width of the underside of the superlift mast.
In an alternative scheme of this embodiment, one end of the first pulling plate 100 is connected with one end of the second pulling plate 101 through a first movable joint 102, and the other end of the first pulling plate 100 is provided with a second movable joint 103 for connecting with a super-lift mast of a super-lift device. This ensures that the adjustment mechanism enables the length direction of the first pulling plate 100 to deflect relative to the length direction of the second pulling plate 101, and the first movable joint 102 and the second movable joint 103 cooperate to enable the first pulling plate 100 to move with at least two degrees of freedom relative to the second pulling plate 101.
In an alternative embodiment, the first movable joint 102 is a joint bearing, and/or the second movable joint 103 is a joint bearing. Because the pulling plate assembly needs larger load and impact resistance when being unfolded, the joint bearing has the characteristics of large load capacity, impact resistance, corrosion resistance, abrasion resistance, self-aligning, good lubrication and the like. The joint bearing is generally used for a swing motion (i.e., an angular motion), and since the sliding surface is spherical, a tilt motion (i.e., a centering motion) can be performed within a certain angular range. It should be noted that the first movable joint 102 and the second movable joint 103 are not limited to joint bearings, and other forms of movable joints can be freely selected according to actual conditions to implement multiple degrees of freedom.
In an alternative of this embodiment, the first pulling plate 100 can rotate relative to the second pulling plate 101 in a first plane, so that the first pulling plate 100 and the second pulling plate 101 can be folded and retracted, and the first pulling plate 100 can deflect relative to the second pulling plate 101 in a second plane, the first plane being parallel to the plate surface 104 of the first pulling plate 100, and the second plane being disposed at an angle to the first plane. The angle formed by the second plane and the first plane may be 90 degrees, or may be other preset angles, so as to realize the function that the first pulling plate 100 can have at least two degrees of freedom relative to the second pulling plate 101. The first pulling plate 100 can rotate or/and deflect relative to the second pulling plate 101 during the process of retracting, releasing, expanding and tensioning the pulling plate assembly, i.e. the movement of the first pulling plate 100 relative to the second pulling plate 101 can be a compound movement.
It should be noted that, since the movement of the first pulling plate 100 relative to the second pulling plate 101 may be a compound movement, the first plane and the second plane may both be projection planes, the compound movement is in the first plane, i.e., the first pulling plate 100 can rotate relative to the second pulling plate 101, and the compound movement is in the second plane, i.e., the first pulling plate 100 can deflect relative to the second pulling plate 101. The trajectory of the compound motion may be a three-dimensional helix.
In the optional scheme of this embodiment, the adjusting mechanism includes a cylinder 105, a spring 106 and a pin 107; the spring 106 is arranged in the cylinder barrel 105, the circumferential surface of the pin shaft 107 is provided with a limiting boss 108, so that the pin shaft 107 can be limited in the cylinder barrel 105, and the pin shaft 107 can compress the spring 106; the cylinder 105 is movably connected with the first pulling plate 100, and the pin 107 is used for movably connecting with a super-lifting mast of the super-lifting device.
Specifically, one end of the cylinder 105 has a hinge lug seat 109, the hinge lug seat 109 is hinged to a portion between two ends of the first pulling plate 100, and an axial direction of a hinge shaft between the hinge lug seat 109 and the first pulling plate 100 is parallel to the plate surface 104 of the first pulling plate 100; the other end of the cylinder barrel 105 is detachably connected with a cylinder cover 110, the cylinder cover 110 is provided with a first through hole, one end of the pin shaft 107 extends out of the first through hole, one end of the cylinder barrel 105 is further provided with a second through hole 111, a bolt 112 penetrates into the cylinder barrel 105 from the second through hole 111 to be in threaded connection with the other end of the pin shaft 107, and the diameter of the head of the bolt 112 is larger than that of the second through hole 111. The cylinder 105 has a guide sleeve 113 inside, and the guide sleeve 113 is fixedly connected to the cylinder 105 so that the pin 107 can move in the axial direction of the guide sleeve 113. The guide sleeve 113 and the pin 107 are both located in the axial cavity of the spring 106. One end of the spring 106 is abutted against the inner wall of one end of the cylinder 105, the other end of the spring 106 is abutted against a limiting ring 114 sleeved on the pin shaft 107, the limiting ring 114 is limited by the limiting boss 108, and the limiting ring 114 is positioned in the cylinder 105, so that when the pin shaft 107 moves from the other end of the cylinder 105 to one end of the cylinder 105, the spring 106 can be compressed.
It should be noted that the adjusting mechanism is not limited to the above structure, and other adjusting mechanisms can be freely selected according to actual working conditions to achieve the function of deflection, for example, the adjusting mechanism is an oil cylinder, a hydraulic cylinder, an air cylinder or an electric cylinder; for the other forms of the adjusting mechanism, detailed descriptions are omitted.
In an optional scheme of this embodiment, the pulling plate assembly further includes a folding plate group, the other end of the second pulling plate 101 has a first strip-shaped hole 115, one end of the folding plate group is hinged to the other end of the second pulling plate 101 through a first hinge shaft 116, and the first hinge shaft 116 can move along the length direction of the first strip-shaped hole 115; the length direction of the first strip-shaped hole 115 is parallel to the length direction of the second pulling plate 101. The folding plate group is beneficial to being suitable for super masts with different lengths.
In an optional scheme of this embodiment, a protective structure 118 is arranged on the folding plate group, and the protective structure can be in contact with the second pulling plate 101; and/or the folding plate group comprises a plurality of third pulling plates 117, the plurality of third pulling plates 117 are sequentially hinged, one end of one third pulling plate 117 is hinged with the other end of the second pulling plate 101 through a first hinge shaft 116, the third pulling plate 117 hinged with the second pulling plate 101 is the first third pulling plate 117, the third pulling plate 117 hinged with the first third pulling plate 117 is the second third pulling plate 117, and a protective structure can be arranged on the second third pulling plate 117. The protective structure can protect the folding plate group, reduce the friction to the folding plate group or the second pulling plate 101 when the pulling plate assembly is folded or unfolded, prolong the service life of the pulling plate assembly, and the arrangement of the plurality of third pulling plates 117 is favorable for being suitable for super-lifting masts with different lengths. The guard structure may be a nylon plate secured to the third pulling plate 117.
In summary, the hinge point of the first pulling plate 100 and the super mast is moved to the middle position in the width direction of the super mast, so that the torsion of the super mast is reduced, the stress of the super mast is improved, and the material use performance is improved. The super-lifting mast can use lower grade materials, and the cost of the super-lifting mast is reduced.
Example two
The second embodiment of the invention provides a super-lifting device, which comprises a super-lifting mast and a pulling plate assembly provided by the first embodiment; the pull plate assembly can be deployed or stowed along with the superlift mast.
EXAMPLE III
The third embodiment of the invention provides a crane, which comprises a crane arm and the superlift device provided by the second embodiment; one end of the pulling plate component is movably connected with the crane boom in a hinged mode, and the other end of the pulling plate component is connected with the super-lift mast. The second movable joint 103 on the other end of the first pulling plate 100 of the pulling plate assembly is connected with the super-lift mast through a connecting shaft 201, namely the connecting shaft 201 penetrates through the second movable joint 103, and the other end of the first pulling plate 100 is connected with the second movable joint 103. One end of the pin 107 of the adjusting assembly is hinged with a sleeve 202 fixed on the connecting shaft 201.
The working principle of the pulling plate assembly is as follows: when the super lifting mast is pulled up and unfolded, the first pulling plate which is tensioned exerts force on the spring in the adjusting mechanism to enable the spring to be compressed, and when the spring is compressed to a certain degree, the pulling plates of the pulling plate assembly can be basically positioned on the same straight line. When the super-lift mast is retracted, the compressed spring applies force to the first pulling plate, so that the first pulling plate 100 can deflect relative to the second pulling plate 101, and thus the pulling plate assembly can avoid interference with a crane arm or other components when retracted.
According to the crane provided by the embodiment, the inclination angle of the first pulling plate 100 relative to the second pulling plate 101 can be adjusted through the adjusting mechanism, so that the superlift mast is ensured not to interfere with other positions of the crane in the lifting process. When the pulling plate assembly is unfolded, the component force of the first pulling plate 100 counteracts the spring force of the cylinder 105, so that all the pulling plates are almost positioned on the same straight line, and the plate surfaces of all the pulling plates are almost parallel.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.
Claims (10)
1. A pulling plate assembly, comprising a first pulling plate (100), a second pulling plate (101) and an adjusting mechanism; one end of the first pulling plate (100) is movably connected with one end of the second pulling plate (101) so that the first pulling plate (100) can move relative to the second pulling plate (101) with at least two degrees of freedom; the adjusting mechanism is used for enabling the first pulling plate (100) to deflect relative to the second pulling plate (101).
2. The pulling plate assembly according to claim 1, wherein one end of the adjusting mechanism is movably connected with the first pulling plate (100), and the other end of the first pulling plate (100) and the other end of the adjusting mechanism are respectively used for movably connecting with a super-lift mast of a super-lift device.
3. The pulling plate assembly according to claim 2, characterized in that one end of the first pulling plate (100) is connected with one end of the second pulling plate (101) through a first movable joint (102), and the other end of the first pulling plate (100) is provided with a second movable joint (103) for connecting with a superlift mast of a superlift device.
4. The pulling plate assembly according to claim 3, characterized in that the first movable joint (102) is a joint bearing and/or the second movable joint (103) is a joint bearing.
5. The pulling plate assembly according to claim 1, characterized in that the first pulling plate (100) is rotatable in relation to the second pulling plate (101) in a first plane and the first pulling plate (100) is deflectable in relation to the second pulling plate (101) in a second plane, the first plane being parallel to the plate surface (104) of the first pulling plate (100) and the second plane being arranged at an angle to the first plane.
6. The pulling plate assembly according to any one of claims 2-5, wherein the adjustment mechanism comprises a cylinder (105), a spring (106) and a pin (107); the spring (106) is arranged in the cylinder barrel (105), a limiting boss (108) is arranged on the peripheral surface of the pin shaft (107), so that the pin shaft (107) can be limited in the cylinder barrel (105), and the pin shaft (107) can compress the spring (106); the cylinder barrel (105) is movably connected with the first pulling plate (100), and the pin shaft (107) is movably connected with a super-lifting mast of a super-lifting device;
or the adjusting mechanism is an oil cylinder, an air cylinder or an electric cylinder.
7. A pulling plate assembly according to any one of claims 2-5, further comprising a folding plate group, wherein the other end of the second pulling plate (101) is provided with a first strip-shaped hole (115), one end of the folding plate group is hinged with the other end of the second pulling plate (101) through a first hinge shaft (116), and the first hinge shaft (116) can move along the length direction of the first strip-shaped hole (115); the length direction of the first strip-shaped hole (115) is parallel to the length direction of the second pulling plate (101).
8. The pulling plate assembly according to claim 7, characterized in that a shielding structure (118) is provided on the set of folding plates, said shielding structure (118) being able to be in contact with the second pulling plate (101);
and/or the folding plate group comprises a plurality of third pulling plates (117), and the third pulling plates (117) are sequentially hinged with each other.
9. A superlift apparatus comprising a superlift mast and a pulling plate assembly according to any one of claims 1-8; the pulling plate assembly can be unfolded or folded along with the super lift mast.
10. A crane comprising a boom and the super lift apparatus of claim 9; one end of the pulling plate component is connected with the cargo boom, and the other end of the pulling plate component is connected with the super-lift mast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010578447.2A CN111689409A (en) | 2020-06-22 | 2020-06-22 | Pulling plate assembly, super-lifting device and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010578447.2A CN111689409A (en) | 2020-06-22 | 2020-06-22 | Pulling plate assembly, super-lifting device and crane |
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| CN111689409A true CN111689409A (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010578447.2A Pending CN111689409A (en) | 2020-06-22 | 2020-06-22 | Pulling plate assembly, super-lifting device and crane |
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| CN103601082A (en) * | 2013-11-22 | 2014-02-26 | 中联重科股份有限公司 | Crane and arm rising method thereof |
| CN103626053A (en) * | 2013-12-03 | 2014-03-12 | 中联重科股份有限公司 | Crane and suspension arm thereof |
| CN104401888A (en) * | 2014-10-30 | 2015-03-11 | 三一汽车起重机械有限公司 | Super lift apparatus and crane |
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Application publication date: 20200922 |
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