CN211946016U - Boom unit and crane - Google Patents
Boom unit and crane Download PDFInfo
- Publication number
- CN211946016U CN211946016U CN202020401597.1U CN202020401597U CN211946016U CN 211946016 U CN211946016 U CN 211946016U CN 202020401597 U CN202020401597 U CN 202020401597U CN 211946016 U CN211946016 U CN 211946016U
- Authority
- CN
- China
- Prior art keywords
- plate
- arm support
- connecting plate
- sub
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Jib Cranes (AREA)
Abstract
The utility model provides a cantilever crane unit and hoist, its characterized in that, the cantilever crane unit includes: a top plate; a bottom plate disposed opposite to the top plate; the two connecting plates are oppositely arranged, one end of each connecting plate is connected with the top plate, the other end of each connecting plate is connected with the bottom plate, and the top plate, the bottom plate and the connecting plates form a cylindrical structure in a surrounding mode; wherein, the middle section of connecting plate is provided with the bending, bends towards the inboard bending of cantilever crane unit. The arm support unit in the shape can relieve the deflection problem of an arm support assembly formed by a plurality of arm support units due to gravity to a certain extent, and has excellent centering performance, so that the unbalance loading problem of the plurality of arm support units during suspension loading is solved. Therefore, the technical effects of optimizing the structure of the arm support unit, improving the structural stability and reliability of the arm support unit, reducing the damage probability of the arm support unit and prolonging the service life of a product are achieved.
Description
Technical Field
The utility model relates to an engineering machine tool technical field particularly, relates to an arm support unit and hoist.
Background
Specifically, in the conventional arm support, the cross section of the arm support generally consists of an upper bending plate and a lower bending plate, the upper bending plate is pulled, the lower bending plate is pressed, and a plurality of arm supports are nested together to form the telescopic arm support. Although the existing U-shaped section arm support reduces the weight and improves the hoisting capacity, the phenomenon of severe torsion among different arm supports can occur in the hoisting process. The ideal state of the arm support in the design process is that the outer arm support and the inner arm support are always in a centering state, even if the goods are hung, the inner arm support close to one side of the heavy object is twisted under the action force of the heavy object in the actual hanging process, the outer arm support far away from the heavy object relatively, collision occurs between the inner arm support and the outer arm support, and potential safety hazards are brought.
SUMMERY OF THE UTILITY MODEL
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
Therefore, a first aspect of the present invention is to provide a boom unit.
A second aspect of the present invention provides a crane.
In view of this, the utility model provides a first aspect provides a boom unit, and the boom unit includes: a top plate; a bottom plate disposed opposite to the top plate; the two connecting plates are oppositely arranged, one end of each connecting plate is connected with the top plate, the other end of each connecting plate is connected with the bottom plate, and the top plate, the bottom plate and the two connecting plates form a cylindrical structure in a surrounding mode; wherein, the middle section of connecting plate is provided with the bending, bends towards the inboard bending of cantilever crane unit.
In the technical scheme, the arm support unit is limited and comprises a top plate, a bottom plate and two connecting plates. The top plate and the bottom plate are arranged oppositely and used for bearing acting forces in the upper direction and the lower direction of the arm support unit, the two oppositely arranged connecting plates are of a transitional connection structure between the top plate and the bottom plate, one end of each connecting plate is connected with the top plate, the other end of each connecting plate is connected with the bottom plate, the arm support unit of a cylindrical structure is enclosed by the bottom plate and the two connecting plates through the top plate, so that the arm support unit is suitable for the multi-section telescopic arm support assembly. Specifically, the middle parts of the two connecting plates are respectively provided with a bend, the bend bends towards the inner side of the arm support unit, the inward-bending bend is arranged on the connecting plates, the shape of the arm support unit is changed at the bending part, so that the enclosed arm support unit is in a pear shape with a narrow top and a wide bottom on the cross section perpendicular to the extending direction of the arm support unit, on one hand, the arm support unit with the shape can reduce the weight of the arm support unit, and the deflection problem of an arm support assembly formed by a plurality of arm support units due to gravity is relieved to a certain extent, on the other hand, the arm support unit with the shape has excellent centering performance, axial rotation cannot be generated between the mutually nested arm support units, and the unbalance loading problem of the arm support units during hanging loading is solved. Therefore, the technical effects of optimizing the structure of the arm support unit, improving the structural stability and reliability of the arm support unit, reducing the damage probability of the arm support unit and prolonging the service life of a product are achieved.
Specifically, in the conventional arm support, the cross section of the arm support generally consists of an upper bending plate and a lower bending plate, the upper bending plate is pulled, the lower bending plate is pressed, and a plurality of arm supports are nested together to form the telescopic arm support. Although the existing U-shaped section arm support reduces the weight and improves the hoisting capacity, the phenomenon of serious torsion can occur among different arm supports in the hoisting process, and serious safety accidents are easily caused. The ideal state of the arm support in the design process is that the outer arm support and the inner arm support are always in a centering state, even if the goods are hung, the inner arm support close to one side of the heavy object is twisted under the action force of the heavy object in the actual hanging process, the outer arm support far away from the heavy object relatively, collision occurs between the inner arm support and the outer arm support, and potential safety hazards are brought. Aiming at the technical problem, the two connecting plates forming the arm support unit are provided with the bends which are bent towards the inner side of the arm support unit, so that the arm support unit is in a pear shape with a narrow top and a wide bottom on the section perpendicular to the extension direction of the arm support unit, the stress state of the arm support unit when a heavy object is hung is optimized, the alignment of a plurality of arm support units which are nested together is improved, the torsion problem is solved, and the safety and the reliability of the arm support unit are improved.
Additionally, the utility model provides an arm support unit among the above-mentioned technical scheme can also have following additional technical characterstic:
in the above technical solution, further, the bottom plate is a bent plate, and the bottom plate protrudes toward the outer side of the boom unit.
In the technical scheme, the shape of the bottom plate on the arm support unit is specifically limited. On the section perpendicular to the extending direction of the arm support unit, the bottom plate is arc-shaped, namely the bottom plate is a bent plate. Specifically, the bottom plate protrudes towards the outer side direction of the arm support unit, the protruding direction of the bottom plate is limited, on one hand, the weight of the arm support unit is reduced, the deflection problem of an arm support assembly formed by a plurality of arm support units due to self gravity is relieved, the deflection of the arm support assembly is reduced, on the other hand, the stress condition of the arm support can be further optimized by the aid of the arc-shaped bottom plate, and the stability of the arm support assembly is improved. Therefore, the technical effects of optimizing the structure of the arm support unit, improving the stability and the reliability of the arm support unit and prolonging the service life of a product are achieved.
In the above technical solution, further, the connecting plate includes: one end of the first sub-connecting plate is connected with the top plate, and the first sub-connecting plate is a plane plate; one end of the second sub-connecting plate is connected with the other end of the first sub-connecting plate, and the other end of the second sub-connecting plate is connected with the bottom plate; and the bending transition is connected with the first sub-connecting plate and the second sub-connecting plate.
In this technical solution, the connection plate is specifically defined. The connection plate comprises a first sub-connection plate and a second sub-connection plate. One end of the first sub-connecting plate is connected with the top plate, the other end of the first sub-connecting plate is connected with the second sub-connecting plate, one end of the second sub-connecting plate is connected with the first sub-connecting plate, and the other end of the second sub-connecting plate is connected with the second connecting plate, so that a segmented connecting plate structure is formed between the top plate and the bottom plate, and the bending is arranged between the first sub-connecting plate and the second sub-connecting plate, so that the second sub-connecting plate is bent relative to the first sub-connecting plate. The first sub-connecting plate is a plane plate and is linear in section. The connecting plate is arranged to be of a sectional type structure, the stress condition of the area of the connecting plate is further optimized, the centering performance of the jib assembly consisting of the plurality of jib units is further improved through the sectional type structure, and the torsion of the jib assembly in the axis direction in the hoisting process is avoided. Therefore, the technical effects of optimizing the structure of the arm support unit and improving the safety and reliability of the arm support unit are achieved.
In the above technical solution, further, the second sub-connecting plate is a bent plate; on a section perpendicular to the extending direction of the arm support unit, the included angle between the first sub-connecting plate and the top plate is not less than 90 degrees.
In this solution, the first and second sub-connection plates are further defined. On the cross section perpendicular to the extending direction of the arm support unit, the second sub-connecting plate is arc-shaped, namely the second sub-connecting plate is a bent plate. The second sub-connecting plate is limited to be the bent plate, so that the stress condition of the second sub-connecting plate is improved and optimized, the pressure born by the second sub-connecting plate is improved, and the centering performance of the arm support unit is further strengthened. In addition, on the cross section perpendicular to the extending direction of the arm support unit, the included angle between the first sub-connecting plate and the top plate is not smaller than 90 degrees, the arm support unit is prevented from being in a sunken structure in the area of the connecting plate, the bearing capacity of the arm support unit is improved, and the centering performance of the arm support unit is improved. Therefore, the technical effects of optimizing the structure of the arm support unit and improving the stability and reliability of the structure of the arm support unit are achieved.
In the above technical solution, further, the top plate is a flat plate or a bent plate, and when the top plate is the bent plate, the top plate protrudes toward the outer side of the boom unit.
In this technical solution, the shape of the ceiling plate is specifically defined. The top plate is a plane plate or a bent plate, and the top plate is linear or arc-shaped on the section perpendicular to the extending direction of the arm support unit. The weight of the arm support unit can be reduced to a certain extent by limiting the top plate to be a plane plate, and the flexibility of the arm support assembly is reduced. The top plate is limited to be the bent plate, and the top plate is limited to be bent towards the outer side direction of the arm support unit, so that the bearing capacity and the centering performance of the arm support unit can be further improved, and the probability of breakage or torsion of the arm support assembly is reduced. Therefore, the technical effects of optimizing the structure of the arm support unit and improving the stability and reliability of the structure of the arm support unit are achieved.
In the above technical scheme, further, roof, bottom plate and connecting plate formula structure as an organic whole.
In the technical scheme, the top plate, the bottom plate and the connecting plate are of an integrated structure. The cantilever crane unit is of an integrated structure, so that the connecting process among a plurality of plates is omitted, the manufacturing difficulty of the cantilever crane unit is greatly reduced, and the production cost is reduced. And further, the technical effects of optimizing the boom unit mechanism, reducing the production difficulty and the production cost of the boom unit and improving the structural stability are achieved.
In the above technical solution, further, the boom unit further includes: one end of the top plate is in arc transition connection with one end of the connecting plate; the other ends of the bottom plate and the connecting plate are in arc transition connection.
In the technical scheme, the connecting part of the top plate and the bottom plate and the connecting part of the bottom plate and the connecting plate are provided with arc-shaped transitional bends. By limiting the arc transition structure, stress concentration of a connecting area of the top plate and the connecting plate and stress concentration of a connecting area of the bottom plate and the connecting plate can be removed, and the arm support unit is prevented from being broken and bent due to stress concentration in the working process. Therefore, the technical effects of optimizing the structure of the arm support unit, improving the structural stability of the arm support unit and improving the safety of products are achieved.
In the above technical solution, further, on a cross section perpendicular to the extending direction of the boom unit, the two connecting plates are symmetrically disposed on two sides of a center line of the boom unit.
In the technical scheme, the arrangement mode of the connecting plate is specifically limited. On the section perpendicular to the extending direction of the arm support unit, the two connecting plates are symmetrically arranged on two sides of the center line of the arm support unit. The two arm support units are symmetrically arranged on the two sides of the top plate and the bottom plate, so that the arm support units are of a symmetrical structure, the symmetrical structure has excellent centering performance, and collision of a plurality of arm support units which are nested together due to relative torsion in the hoisting process can be effectively avoided. Therefore, the technical effects of optimizing the structure of the arm support unit, improving the stability and reliability of the arm support unit and improving the safety of products are achieved.
A second object of the present invention is to provide a crane, comprising: the arm frame subassembly, the arm frame subassembly includes: at least two arm support units in any technical scheme are nested and connected.
In this solution, a crane is defined, the crane comprising a jib assembly. The arm support assembly is composed of a plurality of arm support units provided by any technical scheme, the arm support units are nested and connected together to form a telescopic arm support assembly, and the arm support units move relatively in the working process to achieve extension and shortening of the arm support units.
In the above technical solution, further, the crane further includes: the hydraulic cylinder is arranged in the arm frame component and is connected with the arm frame unit; and the hoisting mechanism is connected with the telescopic end of the jib component.
In the technical scheme, the hoisting mechanism is used for hoisting the goods to be processed, and after the boom assembly moves to the upper side of the goods through extending and shortening the hoisting mechanism, the hoisting mechanism hoists the goods to realize the transfer of the goods. The boom unit has the technical characteristics of the boom unit in any one of the above technical solutions, and the technical effects of the boom unit in any one of the above technical solutions can be achieved, which are not described herein again.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a boom in the related art;
fig. 2 is another schematic structural diagram of a boom in the related art;
fig. 3 shows a schematic structural diagram of a boom unit according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:
2 ' arm support, 4 ' upper bending plate and 6 ' lower bending plate.
The correspondence between reference numbers and component names in fig. 3 is:
1 arm frame unit, 10 top plates, 20 bottom plates, 30 connecting plates, 302 first sub-connecting plates, 304 second sub-connecting plates and 306.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The boom unit 1 and the crane according to some embodiments of the present invention are described below with reference to fig. 3.
As shown in fig. 3, in an embodiment of the first aspect of the present invention, a boom unit 1 is provided, where the boom unit 1 includes: a top plate 10; a bottom plate 20 disposed opposite to the top plate 10; the two connecting plates 30 are oppositely arranged, one end of each connecting plate 30 is connected with the top plate 10, the other end of each connecting plate 30 is connected with the bottom plate 20, and the top plate 10, the bottom plate 20 and the two connecting plates 30 form a cylindrical structure in an enclosing mode; wherein, the middle section of the connecting plate 30 is provided with a bend 306, and the bend 306 bends towards the inner side of the boom unit 1.
In this embodiment, a boom unit 1 is defined, the boom unit 1 comprising a top plate 10, a bottom plate 20 and two connecting plates 30. The top plate 10 and the bottom plate 20 are arranged oppositely and used for bearing acting forces in the upper and lower directions of the boom unit 1, the connecting plate 30 is a transitional connecting structure between the top plate 10 and the bottom plate 20, one end of the connecting plate 30 is connected with the top plate 10, the other end of the connecting plate 30 is connected with the bottom plate 20, the boom unit 1 with a cylindrical structure is enclosed by the bottom plate 20 and the connecting plate 30 through the top plate 10, and therefore the boom unit 1 is suitable for being used in a multi-section telescopic boom assembly. Specifically, the middle parts of the two connecting plates 30 are respectively provided with a bend 306, the bends 306 bend towards the inner side of the boom unit 1, and the inward-bent bends 306 are arranged on the connecting plates 30, so that the shape of the boom unit 1 is changed at the bent positions, and the boom unit 1 which is enclosed and combined is in a pear shape with a narrow top and a wide bottom on the cross section perpendicular to the extending direction of the boom unit 1, on one hand, the weight of the boom unit 1 can be reduced by the boom unit 1 with the shape, and the deflection problem of a boom assembly formed by a plurality of boom units 1 due to gravity can be relieved to a certain extent, on the other hand, the boom unit 1 with the shape has excellent centering performance, the boom units 1 which are mutually nested cannot axially rotate, and the unbalance loading problem of the boom units 1 during hoisting is solved. Therefore, the technical effects of optimizing the structure of the arm support unit 1, improving the structural stability and reliability of the arm support unit 1, reducing the damage probability of the arm support unit 1 and prolonging the service life of a product are achieved.
Specifically, in the conventional boom 2 ', as shown in fig. 1, the cross section of the boom 2' generally consists of an upper bending plate 4 'and a lower bending plate 6', the upper bending plate 4 'is pulled, the lower bending plate 6' is pressed, and a plurality of booms 2 'are nested together to form the telescopic boom 2'. Although the existing U-shaped section arm frame 2 'reduces the weight and improves the hoisting capacity, the severe twisting phenomenon can occur among different arm frames 2' in the hoisting process, and the serious safety accident can be easily caused. The ideal state of the arm frame 2 'in the design process is that the external arm frame 2' and the internal arm frame 2 'are always in the centering state, even if the suspended load is kept unchanged, in the actual suspension process, as shown in fig. 2, the internal arm frame 2' on the side close to the heavy object is twisted relatively to the external arm frame 2 'far away from the heavy object under the action force due to the influence of the heavy object, so that collision occurs between the internal and external arm frames 2', and potential safety hazards are brought. Aiming at the technical problem, the two connecting plates 30 forming the arm support unit 1 are provided with the bends 306 bending towards the inner side of the arm support unit 1, so that the arm support unit 1 is in a pear shape with a narrow top and a wide bottom on the section perpendicular to the extending direction of the arm support unit 1, the stress state of the arm support unit 1 during weight hanging is optimized, the alignment of a plurality of arm support units 1 nested together is improved, the torsion problem is solved, and the safety and the reliability of the arm support unit 1 are improved.
In one embodiment of the present invention, it is preferable that the bottom plate 20 is a bent plate, and the bottom plate 20 is protruded toward the outside of the price comparison unit 1, as shown in fig. 3.
In this embodiment, the shape of the bottom plate 20 on the boom unit 1 is specifically defined. In a cross section perpendicular to the extension direction of boom unit 1, base plate 20 is curved, that is, base plate 20 is a bent plate. Specifically, the bottom plate 20 protrudes towards the outer side direction of the boom unit 1, and by limiting the protruding direction of the bottom plate 20, on one hand, the weight of the boom unit 1 is reduced, the deflection problem of a boom assembly formed by a plurality of boom units 1 due to self gravity is relieved, the deflection of the boom assembly is reduced, and on the other hand, the arc-shaped bottom plate 20 can further optimize the stress condition of the boom and improve the stability of the boom assembly. Further, the technical effects of optimizing the structure of the arm support unit 1, improving the stability and the reliability of the arm support unit 1 and prolonging the service life of a product are achieved.
In an embodiment of the present invention, preferably, as shown in fig. 3, the connection plate 30 includes: a first sub-connecting plate 302, one end of the first sub-connecting plate 302 is connected to the top plate 10, and the first sub-connecting plate 302 is a flat plate; a second sub-connecting plate 304, one end of the second sub-connecting plate 304 is connected with the other end of the first sub-connecting plate 302, and the other end of the second sub-connecting plate 304 is connected with the bottom plate 20; wherein the bend 306 transitionally joins the first sub-web 302 and the second sub-web 304.
In this embodiment, the connection plate 30 is specifically defined. The connection plate 30 includes a first sub-connection plate 302 and a second sub-connection plate 304. One end of the first sub-connecting plate 302 is connected to the top plate 10, the other end of the first sub-connecting plate 302 is connected to the second sub-connecting plate 304, one end of the second sub-connecting plate 304 is connected to the first sub-connecting plate 302, and the other end of the second sub-connecting plate 304 is connected to the second connecting plate 30, thereby forming a segmented connecting plate 30 structure between the top plate 10 and the bottom plate 20, wherein a bend 306 is provided between the first sub-connecting plate 302 and the second sub-connecting plate 304, thereby bending the second sub-connecting plate 304 with respect to the first sub-connecting plate 302. Specifically, the first sub-connecting plate 302 is a flat plate, and is linear in cross section. The connecting plate 30 is arranged to be of a sectional type structure, the stress condition of the area of the connecting plate 30 is further optimized, the centering performance of the arm support assembly consisting of the arm support units 1 is further improved through a sectional mechanism, and the arm support assembly is prevented from being twisted in the axial direction in the hoisting process. Thereby realizing the technical effects of optimizing the structure of the arm support unit 1 and improving the safety and the reliability of the arm support unit 1.
In one embodiment of the present invention, preferably, as shown in fig. 3, the second sub-connecting plate 304 is a bent plate; in a cross section perpendicular to the extending direction of the boom unit 1, the included angle between the first sub-connecting plate 302 and the top plate 10 is not less than 90 °.
In this embodiment, the first and second sub-connection plates 302, 304 are further defined. In a cross section perpendicular to the extending direction of the boom unit 1, the second sub-connecting plate 304 is arc-shaped, that is, the second sub-connecting plate 304 is a bent plate. By limiting the second sub-connecting plate 304 to be a bent plate, on one hand, the stress condition of the second sub-connecting plate 304 is improved and optimized, the pressure which can be borne by the second sub-connecting plate 304 is improved, and on the other hand, the centering performance of the boom unit 1 is further strengthened. In addition, on a cross section perpendicular to the extending direction of the boom unit 1, the included angle between the first sub-connecting plate 302 and the top plate 10 is not less than 90 degrees, and the boom unit 1 is prevented from being in a sunken structure in the area of the connecting plate 30, so that the bearing capacity of the boom unit 1 is improved, and the centering performance of the boom unit 1 is improved. And further, the technical effects of optimizing the structure of the arm support unit 1 and improving the structural stability and reliability of the arm support unit 1 are achieved.
In an embodiment of the present invention, preferably, as shown in fig. 3, the top plate 10 is a flat plate or a bent plate, and when the top plate 10 is the bent plate, the top plate 10 protrudes toward the outside of the boom unit 1.
In this embodiment, the shape of the ceiling plate 10 is specifically defined. The top plate 10 is a flat plate or a bent plate, and the top plate 10 is linear or arc-shaped on a section perpendicular to the extending direction of the boom unit 1. The weight of the boom unit 1 can be reduced to some extent by defining the top plate 10 as a planar plate, reducing the flexibility of the boom assembly. By limiting the top plate 10 to be a bent plate and limiting the top plate 10 to bend towards the outer side direction of the boom unit 1, the bearing capacity and the centering performance of the boom unit 1 can be further improved, and the probability of breakage or torsion of the boom assembly is reduced. And further, the technical effects of optimizing the structure of the arm support unit 1 and improving the structural stability and reliability of the arm support unit 1 are achieved.
In one embodiment of the present invention, the top plate 10, the bottom plate 20 and the connecting plate 30 are preferably an integral structure.
In this embodiment, the top plate 10, the bottom plate 20 and the connecting plate 30 are of a unitary structure. By limiting the cantilever crane unit 1 to be of an integrated structure, on one hand, a connecting process among a plurality of plates is omitted, the manufacturing difficulty of the cantilever crane unit 1 is greatly reduced, and the production cost is reduced, on the other hand, the cantilever crane unit 1 of the integrated structure is not provided with a structural section, and the cantilever crane unit cannot be broken due to obvious stress concentration in the working process. And further, the technical effects of optimizing the mechanism of the arm support unit 1, reducing the production difficulty and the production cost of the arm support unit 1 and improving the structural stability are achieved.
In an embodiment of the present invention, preferably, as shown in fig. 3, the boom unit 1 further includes: one end of the top plate 10 and one end of the connecting plate 30 are in arc transition connection; the other ends of the bottom plate 20 and the connecting plate 30 are in arc transition connection.
In this embodiment, the junction between the top plate 10 and the bottom plate 20 and the junction between the bottom plate 20 and the connecting plate 30 are provided with transitional bends having a circular arc shape. By defining the arc transition structure, the stress concentration at the connection area of the top plate 10 and the connecting plate 30 and the stress concentration at the connection area of the bottom plate 20 and the connecting plate 30 can be removed, and the arm support unit 1 is prevented from being broken and bent due to the stress concentration during the working process. Further, the technical effects of optimizing the structure of the arm support unit 1, improving the structural stability of the arm support unit 1 and improving the safety of products are achieved.
In an embodiment of the present invention, preferably, as shown in fig. 3, on a cross section perpendicular to the extending direction of the boom unit 1, two connecting plates 30 are symmetrically disposed on two sides of a center line of the boom unit 1.
In this embodiment, the arrangement of the connection plate 30 is specifically limited. On a section perpendicular to the extending direction of the boom unit 1, two connecting plates 30 are symmetrically arranged on two sides of the center line of the boom unit 1. The two arm support units 1 are symmetrically arranged on the two sides of the top plate 10 and the bottom plate 20, so that the arm support units 1 are in a symmetrical structure, the symmetrical structure has excellent centering performance, and collision of a plurality of arm support units 1 which are nested together due to relative torsion can be effectively avoided in the hoisting process. Further, the technical effects of optimizing the structure of the arm support unit 1, improving the stability and reliability of the arm support unit 1 and improving the safety of products are achieved.
An embodiment of the second aspect of the present invention provides a crane, the crane comprising: the arm frame subassembly, the arm frame subassembly includes: at least two arm support units 1 in any technical scheme are nested and connected with each other.
In this embodiment, a crane is defined, the crane comprising a jib assembly and a hydraulic cylinder. The arm support assembly is composed of a plurality of arm support units 1 provided by any embodiment, the arm support units 1 are connected together in a nested mode to form a telescopic arm support assembly, and the arm support units 1 move relatively in the working process to achieve extension and contraction of the arm support units 1.
In an embodiment of the present invention, preferably, the crane further includes: the hydraulic cylinder is arranged in the arm frame component and is connected with the arm frame unit 1; and the hoisting mechanism is connected with the telescopic end of the jib component.
In this implementation, hoisting machine constructs and is used for hoisting the goods that await handling, and after the cantilever crane subassembly removed hoisting machine structure to the goods top through extension and shortening, hoisting machine constructs the goods and lifts by crane in order to realize the migration of goods. The boom unit 1 has the technical features of the boom unit 1 in any of the above embodiments, and the technical effects of the boom unit 1 in any of the above embodiments can be achieved, which are not described herein again. In a specific embodiment of the present invention, a novel cross-sectional form of the boom unit 1 is defined, as shown in fig. 3. The structure comprises a top plate 10, a first sub-connecting plate 302, a second sub-connecting plate 304, a bottom plate 20 and a large circular arc chamfer connected in the middle.
The structure is small in size and large in size, is similar to a duck pear shape, meets the stress condition of the arm support unit 1 during actual hoisting, reduces the mass of the duck pear-shaped arm support unit 1 by 6% compared with a simple U-shaped boom under the condition of the same hoisting performance, facilitates the arrangement of a telescopic mechanism inside the arm support unit 1 and the implementation of external accessories of the arm support unit 1, is good in centering performance, cannot rotate axially between a barrel body and an inner barrel body, and solves the problem of potential barrel unbalance loading of the crane arm support unit 1 during hoisting. The upper portion of the cylinder body is a plane, the left upper half portion and the right upper half portion of the cylinder body are vertical and are in arc transition, the left lower half portion and the right lower half portion of the cylinder body are small sections of elliptic cambered surfaces, and the bottom end of the cylinder body is a whole section of elliptic cambered surface. The top plate 10 may be angled at 90 or an obtuse angle to the first sub-connecting plate 302. Through the section form, the stress of the arm support unit 1 is improved, and the stability of the arm support unit 1 is improved.
In the present invention, the terms "mounting", "connecting", "fixing" and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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 do not necessarily 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.
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 (10)
1. A boom unit, characterized by comprising:
a top plate;
a bottom plate disposed opposite to the top plate;
the two connecting plates are oppositely arranged, one end of each connecting plate is connected with the top plate, the other end of each connecting plate is connected with the bottom plate, and the top plate, the bottom plate and the two connecting plates form a cylindrical structure in a surrounding mode;
the middle section of the connecting plate is provided with a bend, and the bend bends towards the inner side of the arm support unit.
2. The boom unit of claim 1, wherein the base plate is a bent plate, and the base plate is convex in an outer direction of the boom unit.
3. The boom unit of claim 2, wherein the connection plate comprises:
one end of the first sub-connecting plate is connected with the top plate, and the first sub-connecting plate is a plane plate;
one end of the second sub-connecting plate is connected with the other end of the first sub-connecting plate, and the other end of the second sub-connecting plate is connected with the bottom plate;
and the first sub-connecting plate and the second sub-connecting plate are in transition connection through bending.
4. Boom unit according to claim 3,
the second sub-connecting plate is a bent plate;
on a cross section perpendicular to the extending direction of the arm support unit, an included angle between the first sub-connecting plate and the top plate is not less than 90 degrees.
5. The boom unit of claim 2, wherein the top plate is a flat plate or a bent plate, and when the top plate is a bent plate, the top plate is convex in an outer direction of the boom unit.
6. The boom unit according to any of claims 1-5, characterized in that the top plate, the bottom plate and the connecting plate are of one-piece construction.
7. The boom unit according to any of claims 1-5, characterized in that the top plate and the one end of the connecting plate are in a circular arc transition connection;
the bottom plate and the other end of the connecting plate are in arc transition connection.
8. The boom unit according to any of claims 1-5, wherein two connecting plates are symmetrically arranged on both sides of a center line of the boom unit in a cross section perpendicular to an extension direction of the boom unit.
9. A crane, comprising:
an arm frame assembly, the arm frame assembly comprising:
at least two boom units according to any of claims 1-8, at least two of said boom units being nested.
10. The crane of claim 9, further comprising:
the hydraulic cylinder is arranged in the arm frame assembly and is connected with the arm frame unit;
and the hoisting mechanism is connected with the telescopic end of the boom component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020401597.1U CN211946016U (en) | 2020-03-26 | 2020-03-26 | Boom unit and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020401597.1U CN211946016U (en) | 2020-03-26 | 2020-03-26 | Boom unit and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211946016U true CN211946016U (en) | 2020-11-17 |
Family
ID=73185921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020401597.1U Active CN211946016U (en) | 2020-03-26 | 2020-03-26 | Boom unit and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211946016U (en) |
-
2020
- 2020-03-26 CN CN202020401597.1U patent/CN211946016U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101258095B (en) | Combination double bottom hook block | |
| CN211946016U (en) | Boom unit and crane | |
| WO2015043240A1 (en) | Single-girder hanger and reach stacker | |
| US5036162A (en) | Triaxial mount | |
| CN215888871U (en) | Integral extrusion type keel for installing ceiling board | |
| CN220033928U (en) | Arm support and aerial working equipment | |
| CN214570311U (en) | Support is even frame and cantilever crane luffing mechanism | |
| CN211619741U (en) | Multifunctional hoisting balance beam | |
| CN102398863A (en) | Support structure capable of improving jib bearing capacity and crane with the support structure | |
| CN217996460U (en) | Lifting system of lifting appliance | |
| CN217350371U (en) | Auxiliary device for hoisting large-tonnage beam | |
| CN220596773U (en) | Hanging beam of double-bridge crane | |
| CN211419340U (en) | Lifting hook for crane | |
| CN211846939U (en) | Crane boom barrel, crane boom and crane | |
| CN217201618U (en) | Whole car hoist of heavy armoured vehicle | |
| CN215101493U (en) | Lifting hook assembly of hydraulic rotary crane | |
| CN207390865U (en) | A kind of floating crane swings pulley gear | |
| CN212533448U (en) | Frame body structure of double-drum washing machine and double-drum washing machine | |
| CN110921486A (en) | Multifunctional hoisting balance beam | |
| CN220056064U (en) | Beam assembly | |
| CN212334423U (en) | Overload limiter mounting structure for crane | |
| CN218371425U (en) | Cargo boom with anti-deflection pull rod frame structure | |
| CN219116957U (en) | Packing box lifting appliance | |
| CN220703075U (en) | Flat type secondary balance beam structure for tower crane movable balance weight | |
| CN216764050U (en) | Lifting hook for end part of thick-wall steel pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221104 Address after: 413062 Floor 3, No. 1 Factory Building, Sany Zhongyang Industrial Park, East New District, Yuxiangshan Street, Yiyang City, Hunan Province (101, Shiba Village, Henglongqiao Town) Patentee after: Hunan Province Ground Unmanned Equipment Engineering Research Center Co.,Ltd. Address before: 410100 31 industrial city, Changsha economic and Technological Development Zone, Hunan Patentee before: Sany Automobile Manufacturing Co.,Ltd. |
|
| TR01 | Transfer of patent right |