阅读说明：本技术 格构式变径组件臂架和起重机 (Lattice type reducing assembly arm support and crane ) 是由 秦绪起 丁良 焦战方 于 2019-10-12 设计创作，主要内容包括：本发明涉及工程机械技术领域,具体而言,涉及格构式变径组件臂架和起重机。格构式变径组件臂架,包括从下到上依次可拆卸连接下节臂、变径连接件、水平连接件和上节臂；变径连接件靠近下节臂的端部的宽度小于远离下节臂的端部的宽度。其能够高效、快捷地组合成预设宽度的臂架。(The invention relates to the technical field of engineering machinery, in particular to a lattice type reducing assembly arm support and a crane. The lattice type reducing assembly arm support comprises a lower section arm, a reducing connecting piece, a horizontal connecting piece and an upper section arm which are detachably connected in sequence from bottom to top; the width of the end part of the reducing connecting piece close to the lower knuckle arm is smaller than that of the end part far away from the lower knuckle arm. The arm support can be efficiently and quickly combined into the arm support with the preset width.)

1. A lattice formula reducing subassembly cantilever crane which characterized in that:

the device comprises a lower knuckle arm, a reducing connecting piece, a horizontal connecting piece and an upper knuckle arm which are detachably connected in sequence from bottom to top;

the width of the end part of the reducing connecting piece close to the lower arm is smaller than the width of the end part far away from the lower arm.

2. The lattice type reducing assembly boom of claim 1, wherein:

the connector also comprises a middle connector and at least one overhanging connector;

along the height direction of the lattice type reducing assembly arm support, adjacent overhanging connecting pieces are detachably connected through middle connecting pieces;

the overhanging connecting piece comprises two overhanging parts which are oppositely arranged, and the overhanging parts are inclined towards the direction of the central axis far away from the lattice type reducing component arm support;

along the width direction of the lattice type reducing assembly arm support, the extending parts are respectively positioned on two sides of the end part of the reducing connecting piece far away from the lower section arm, and/or the extending parts are respectively positioned on two sides of the middle connecting piece;

the overhang portion, the lower arm, the intermediate connector and the horizontal connector are all detachably connected.

3. The lattice type reducing assembly boom of claim 2, wherein:

the top frame and the bottom frame of the extension part are parallel to each other and staggered, and the staggered angle between the top frame and the bottom frame is alpha;

c ═ B +2 × L/tan (α);

the cantilever crane comprises a lattice type reducing assembly cantilever crane, a cantilever crane and a cantilever crane, wherein C is the preset width of the lattice type reducing assembly cantilever crane, B is the bottom width of the uppermost overhanging connecting piece, L is the height of the overhanging part, and alpha is an acute angle.

4. The lattice type reducing assembly boom of claim 2, wherein:

the dislocation angles of the adjacent overhanging connectors are the same or different.

5. The lattice type reducing assembly boom of claim 2, wherein:

the width of the middle connecting piece is larger than that of the reducing connecting piece.

6. The lattice type reducing assembly boom of claim 2, wherein:

comprises a connecting truss arm;

the connecting truss arm is detachably arranged on the intermediate connecting piece;

and/or the connecting truss arm is detachably on the horizontal connector.

7. The lattice reducing assembly boom of any one of claims 1 to 6, wherein:

the width of the bottom of the reducing connecting piece is the same as that of the lower-section arm.

8. The lattice reducing assembly boom of any one of claims 1 to 6, wherein:

the width of the top of the horizontal connecting piece is the same as that of the upper knuckle arm.

9. The lattice reducing assembly boom of any one of claims 1 to 6, wherein:

the horizontal connecting piece, the reducing connecting piece, the overhanging connecting piece and the middle connecting piece are all truss structures.

10. A crane, characterized by:

the crane comprises the lattice type reducing assembly boom as claimed in any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a lattice type reducing assembly arm support and a crane.

Background

The arm support of the crawler crane is usually formed by connecting a plurality of sections of connecting joints with the same or different lengths through pin shafts, and the length required by construction can be achieved by selecting the number and the configuration mode of the connecting joints.

In order to effectively improve the lateral load resistance of the arm support, the area of the cross section of the arm support can be increased, particularly the size of the arm support in the width direction is increased, so that the rigidity of the arm support against the lateral load is improved, and the lifting capacity of the arm support is further improved. However, the prior art has poor effect.

Disclosure of Invention

The invention aims to provide a lattice type reducing assembly arm support and a crane, which can be efficiently and quickly combined into an arm support with a preset width.

Embodiments of the invention may be implemented as follows:

in a first aspect, an embodiment of the present invention provides a lattice type reducing assembly boom, including:

the lower knuckle arm, the reducing connecting piece, the horizontal connecting piece and the upper knuckle arm are detachably connected in sequence from bottom to top;

the width of the end part of the reducing connecting piece close to the lower knuckle arm is smaller than that of the end part far away from the lower knuckle arm.

In an alternative embodiment, the device further comprises a middle connecting piece and at least one overhanging connecting piece;

along the height direction of the lattice type reducing assembly arm support, adjacent overhanging connecting pieces are detachably connected through middle connecting pieces;

the overhanging connecting piece comprises two overhanging parts which are oppositely arranged, and the overhanging parts are inclined towards the direction of the central axis far away from the lattice type reducing component arm support;

along the width direction of the lattice type reducing assembly arm support, the extension parts are respectively positioned on two sides of the end part of the reducing connecting piece far away from the lower section arm, and/or the extension parts are respectively positioned on two sides of the middle connecting piece;

the extension part, the lower section arm, the middle connecting piece and the horizontal connecting piece can be detachably connected.

In an optional embodiment, the top frame and the bottom frame of the overhanging part are parallel to each other and staggered, and the offset angle between the top frame and the bottom frame is alpha;

c ═ B +2 × L/tan (α);

wherein C is the width of the preset lattice type reducing assembly arm support, B is the width of the bottom of the overhanging connecting piece positioned at the top, L is the height of the overhanging part, and alpha is an acute angle.

In alternative embodiments, the offset angles of adjacent overhanging connections are the same or different.

In an alternative embodiment, the width of the intermediate connection is greater than the width of the reducer connection.

In an alternative embodiment, a connecting truss arm is included;

the connecting truss arm is detachably arranged on the middle connecting piece;

and/or the connecting truss arms are detachably connected to the horizontal connecting member.

In an alternative embodiment, the width of the bottom of the reducing connector is the same as the width of the lower pitch arm.

In an alternative embodiment, the width of the top of the horizontal connector is the same as the width of the upper knuckle arm.

In an alternative embodiment, the horizontal connectors, the reducing connectors, the overhanging connectors and the middle connectors are all truss structures.

In a second aspect, an embodiment of the present invention provides a crane, where the crane includes the lattice type reducing assembly boom described in any one of the foregoing embodiments.

The beneficial effects of the embodiment of the invention include, for example:

the lattice type reducing assembly arm frame can be efficiently and quickly combined into an arm frame with a preset width. Furthermore, only one set of lattice type reducing assembly is needed, the preset section width can be obtained, the width of the arm support is obviously increased, and the device is simple in structure, convenient to operate and high in economic benefit.

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 view of a first structure of a lattice type reducing assembly arm support;

FIG. 2 is a schematic view of the overhang of FIG. 1;

FIG. 3 is a schematic diagram of a second structure of the lattice type reducing assembly arm support;

fig. 4 is a schematic diagram of a third structure of the lattice type reducing assembly arm support.

Icon: 10-lattice type reducing component arm support; 100-lower arm; 200-reducing connecting pieces; 300-horizontal connector; 400-upper arm; 500-intermediate connectors; 600-overhanging connections; 610-overhang; 700-connecting the truss arms.

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 if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1, the embodiment provides a lattice type reducing assembly arm support 10, which includes a lower arm 100, a reducing connector, a horizontal connector 300 and an upper arm 400, which are detachably connected in sequence from bottom to top;

the width of the end of the reducing connector near the lower arm 100 is less than the width of the end far from the lower arm 100.

One end of the lower arm 100 is connected with the rotating platform of the crane, and the other end is connected with the reducing connecting piece 200, and the connecting mode can be a bolt or a pin shaft. The width of the end of the reducing connector 200 connected with the lower arm 100 is the same as that of the lower arm 100, and the length is A. The length of the end with the increased section width is B, wherein B is more than A. The reducing connecting piece 200 effectively increases the width of the cross section, and is the first step of increasing the width of the cross section of the whole set of lattice type reducing assembly.

The structure is simple and quick, installation is convenient and fast, and the width of the lattice type reducing assembly arm support 10 can be increased efficiently.

Please continue to refer to fig. 1 to 4 for further structural details.

Further, in this embodiment, the lattice type reducing assembly boom 10 further includes a middle connector 500 and at least one overhanging connector 600;

along the height direction of the lattice type reducing component arm support 10, the adjacent overhanging connecting pieces 600 are detachably connected through the middle connecting piece 500;

the overhanging connector 600 includes two overhanging portions 610 oppositely disposed, as shown in fig. 2, the overhanging portions 610 are all inclined towards the direction far away from the central axis of the lattice type reducing assembly arm support 10;

along the width direction of the lattice type reducing assembly arm support 10, the extending parts 610 are respectively positioned at two sides of the end part of the reducing connecting piece far away from the lower knuckle arm 100, and/or the extending parts 610 are respectively positioned at two sides of the middle connecting piece 500; overhang 610, lower arm 100, intermediate connector 500, and horizontal connector 300 are all removably attached.

The extending connecting piece 600 further increases the width of the arm support, and is a second step of increasing the width of the cross section of the whole set of lattice type reducing assembly.

Optionally, in this embodiment, the top frame and the bottom frame of the overhang portion 610 are parallel to each other and staggered, and the offset angle between the top frame and the bottom frame is α;

c ═ B +2 × L/tan (α);

wherein C is the width of the preset lattice type reducing assembly arm support 10, B is the bottom width of the overhanging connector 600 positioned at the uppermost position, L is the height of the overhanging part 610, and α is an acute angle.

Furthermore, the joints are welded at the two ends of the overhanging connection, the joint surfaces at the two ends are in parallel dislocation to form a dislocation angle alpha, and the method of symmetrical arrangement along the center line of the arm support can ensure that the whole width of the arm support extends outwards again, so that the width is increased, and a larger cross-sectional area is obtained.

The other end of the overhanging connecting piece 600 is connected to the horizontal connecting piece 300, and through the connection mode, the variable diameter connecting piece, the overhanging connecting piece 600 and the horizontal connecting piece 300 form a frame structure with large width, so that the arm support can obtain better rigidity and side load resistance.

Further, the offset angles of adjacent overhanging connectors 600 may be the same or different. As long as the overhanging joint 600 can increase the width of the boom.

Optionally, the width of the middle connector 500 is greater than the width of the reducer connectors. Therefore, the maximization of the width of the arm support is ensured, and the structural stability is more outstanding due to the connection mode.

Optionally, the lattice type variable diameter assembly boom 10 further includes a connecting truss arm 700; the connecting truss arm 700 is detachably provided on the intermediate connection member 500; and/or the attachment truss arm 700 may be removably attached to the horizontal connector 300.

Optionally, the width of the bottom of the reducing connector is the same as the width of the lower arm 100. Therefore, the middle part of the arm support is stably connected with the lower arm 100, and the stress is stable.

Alternatively, the width of the top of the horizontal connector 300 is the same as the width of the upper arm 400. Therefore, the stable connection between the middle part of the arm support and the upper arm section 400 is facilitated, and the stress is stable.

As can be seen from fig. 1, the two uppermost sections of the conventional truss arms are connected to the horizontal connecting member 300, so that the ultra-wide section can be obtained after the complete set of the lattice type reducing assemblies are connected. The horizontal connecting member 300 is connected to the conventional truss arm and the arm head, and a complete working condition arm support combination which can be used for construction can be obtained.

The cross-sectional widths of the two ends of the horizontal connecting piece 300 are different and are changed from the widest to the narrowest of the whole set of arm support, so that the length of the horizontal connecting piece 300 can be increased to adapt to the adjustment of the cross section, the reducing angle is reduced, and the width can be smoothly transited through the horizontal connecting piece 300, so that the whole set of arm support is simple in structure and stable in stress.

The connecting piece can be in a welding structure or an assembly structure, and the used material can be a steel pipe, a rectangular pipe or an I-shaped steel. The joints at the two ends of each connecting piece are part of the welding body of each connecting piece. Optionally, the horizontal connector 300, the reducing connector, the overhanging connector 600 and the middle connector 500 are all truss structures.

The invention does not limit the size of the lattice type reducing assembly, the reducing connecting pieces thereof, the extending connecting pieces 600, the middle connecting pieces 500 and the horizontal connecting pieces 300, and the lattice type reducing assemblies with different sizes can be obtained by adjusting the size of each element, thereby meeting the requirements of different ultra-wide sections.

As can be seen in the figures, the overhanging attachment 600 includes two crossbars that are parallel to each other, and a side rail disposed between the crossbars. The transverse rods and the longitudinal rods are sequentially connected end to form a parallelogram frame structure. Wherein, the minimum included angle between the adjacent transverse rods and the adjacent longitudinal rods is the dislocation angle alpha.

Furthermore, a connector is arranged above the cross rod at the top of the extending connecting piece 600, a connector is also arranged below the cross rod at the bottom of the extending connecting piece 600, and the extending connecting piece 600 and other parts can be conveniently detachably connected through the connector.

With continued reference to fig. 1-4, it can be seen that there may be a plurality of overhang connectors 600 and intermediate connectors 500.

As can be seen from figure 1, the top of the lower arm section is detachably connected with the bottom of the reducing connection; the two sides of the width direction of the top of the variable-diameter connection are respectively provided with an outward extending connecting piece 600;

the tops of the two overhanging connectors 600 are both arranged at the bottom of one middle connector 500; two connecting truss arms 700 are respectively arranged on both sides of the top of the middle connecting piece 500 in the width direction;

the top of both connecting truss arms 700 is disposed at the bottom of one horizontal connecting member 300; the top of the horizontal connector 300 is connected to the upper arm.

The mating of two intermediate connectors 500 and two connecting truss arms 700 is shown in figure 3. Specifically, the top of the lower arm section is detachably connected with the bottom of the reducing connection; the two sides of the width direction of the top of the variable-diameter connection are respectively provided with an outward extending connecting piece 600;

the tops of the two overhanging connectors 600 are both arranged at the bottom of one middle connector 500; two connecting truss arms 700 are respectively arranged on both sides of the top of the middle connecting piece 500 in the width direction;

the top of both connecting truss arms 700 is disposed at the bottom of the second intermediate connector 500; two other connecting truss arms 700 are respectively arranged on both sides of the top of the second intermediate connector 500 in the width direction;

the top of the other two connecting truss arms 700 are both disposed at the bottom of one horizontal connecting member 300; the top of the horizontal connector 300 is connected to the upper arm. Therefore, the assembly arm support with preset width, high height and stable structure can be obtained.

Fig. 4 shows the mating of two overhanging connectors 600, two intermediate connectors 500 and one connecting truss arm 700. Specifically, it can be seen from the figure that:

the top of the lower arm section is detachably connected with the bottom of the reducing connection; the two sides of the width direction of the top of the variable-diameter connection are respectively provided with an outward extending connecting piece 600;

the tops of the two overhanging connectors 600 are both arranged at the bottom of one middle connector 500;

both sides of the top of the middle connector 500 in the width direction are respectively arranged at the bottoms of the other two overhanging connectors 600 (the other overhanging connectors 600 are different from the overhanging connectors 600 in the offset angle);

the tops of the two additional overhanging connectors 600 are both arranged at the bottom of the second intermediate connector 500;

two connecting truss arms 700 are respectively arranged on both sides of the top of the second intermediate connector 500 in the width direction;

the top of the connecting truss arms 700 are all disposed at the bottom of one horizontal connecting member 300; the top of the horizontal connector 300 is connected to the upper arm. Therefore, the assembly arm frame obtained in the way has the advantages that the stability of the structure is guaranteed, meanwhile, the middle arm frame has a plurality of preset widths, the height is high, and the economic benefit is high.

In a second aspect, an embodiment of the present invention provides a crane, where the crane includes the lattice type reducing assembly boom 10 in any one of the foregoing embodiments.

The beneficial effects of the embodiment of the invention include, for example:

due to the adoption of the overhanging connecting piece 600, the lattice type reducing assembly arm support 10 has a smooth reducing angle, obtains a stable force flow and an ultra-wide arm support section, obtains a larger section for the whole arm support, has better side load resistance and can bear larger load. The middle connecting joint can be connected with the conventional truss arm, so that the upgrading cost is saved, and the utilization rate of the conventional truss arm is improved.

The reducing connecting pieces and the horizontal connecting pieces 300 at the head end and the tail end of the whole set of lattice type reducing assembly ensure the increase and the reduction of the width of the arm support, so that the set of lattice type reducing assembly can be directly used for upgrading the existing crawler crane of a client.

In addition, the lattice type reducing assembly has expandability, and a structure with more than two layers of outwards extending connecting pieces 600 arranged in an inverted splayed shape and more than two layers of middle connecting pieces 500 can be derived.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.