CN215626309U

CN215626309U - Crane with a movable crane

Info

Publication number: CN215626309U
Application number: CN202121760421.6U
Authority: CN
Inventors: 邓永泉; 刘喜青; 周玉龙; 李云波
Original assignee: Construction Machinery Branch of XCMG
Current assignee: Construction Machinery Branch of XCMG
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-01-25
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses a crane, which comprises a base, a main arm, an auxiliary arm pulling plate and an auxiliary arm support, wherein the first end of the main arm is connected with the base; in the working mode of the main arm, the auxiliary arm support and the auxiliary arm are detached from the main arm, the part of the plate section, connected with the auxiliary arm support, of the auxiliary arm pulling plate is separated from the part of the plate section, connected with the main arm, of the auxiliary arm pulling plate, and the end, far away from the connecting part, of the part of the plate section, connected with the main arm is fixedly connected with the connecting structure.

Description

Crane with a movable crane

Technical Field

The utility model relates to the field of engineering machinery, in particular to a crane.

Background

A crane is a common engineering machine used for lifting heavy objects. The cranes are of various types, and for some cranes comprising a main jib and an auxiliary jib, there can be various operation modes that can be switched with each other, such as a main jib operation mode and an auxiliary jib operation mode. In the working mode of the auxiliary boom, one end of the auxiliary boom and one end of the auxiliary boom support are installed to one end of the main boom, the other end of the auxiliary boom is connected with the other end of the auxiliary boom support through a rope and the like, a hoisting device such as a hook pulley block and the like is installed on the auxiliary boom, the auxiliary boom is used for hoisting a heavy object, when the working mode is switched to the main boom, the auxiliary boom is detached from the main boom, the hoisting device such as the hook pulley block and the like is installed on the main boom, and the heavy object is directly hoisted by the main boom. In the working mode of the auxiliary jib, an auxiliary jib pulling plate is connected between the auxiliary jib support and the main jib, and when the working mode of the main jib is switched and structures such as the auxiliary jib, the auxiliary jib support and the like are detached from the main jib, the crane in the prior art usually needs to separate the auxiliary jib pulling plate from the main jib so as to prevent the auxiliary jib pulling plate from falling off and injuring people. When the link plate of the auxiliary arm pulling plate is more and the length is larger, the auxiliary arm pulling plate also needs to be disassembled into a plurality of links. When the main arm work mode is switched again, the detached auxiliary arm pulling plate needs to be reinstalled and connected with the main arm again. With the development of cranes, the hoisting height is continuously increased, the length of the fly jib pull plate can often reach dozens of meters or even hundreds of meters, and the disassembly and the reinstallation of the fly jib pull plate also become important factors influencing the working efficiency.

Disclosure of Invention

The utility model aims to provide a crane which is more convenient and effective for improving the switching between a main arm working mode and an auxiliary arm working mode.

The utility model discloses a crane, which comprises a base, a main arm, an auxiliary arm pulling plate and an auxiliary arm support, wherein the first end of the main arm is connected with the base, the auxiliary arm pulling plate comprises a plurality of plate sections which are detachably connected in an end-to-end connection mode, the crane has an auxiliary arm working mode for lifting a heavy object by using the auxiliary arm and a main arm working mode for lifting the heavy object by using the main arm, the main arm is provided with a connecting structure for fixedly connecting with the plate sections of the auxiliary arm pulling plate, in the auxiliary arm working mode, the first ends of the auxiliary arm and the auxiliary arm support are detachably mounted on the second end of the main arm, the second end of the auxiliary arm is connected with the second end of the auxiliary arm support, the auxiliary arm pulling plate is connected between the main arm and the auxiliary arm support, and the auxiliary arm pulling plate is connected with the connecting part of the main arm; in the working mode of the main arm, the auxiliary arm support and the auxiliary arm are detached from the main arm, the part of the plate joint of the auxiliary arm pulling plate connected with the auxiliary arm support is separated from the part of the plate joint connected with the main arm, and the end part, far away from the connecting part, of the part of the plate joint connected with the main arm is fixedly connected with the connecting structure.

In some embodiments, the connecting structure includes a connecting member and a connecting frame disposed on the main arm, the connecting member has a first end and a second end for connecting with the connecting frame and the partial plate joint respectively in the main arm operation mode, and the second end of the connecting member is adjustable in distance from the connecting frame.

In some embodiments, the connecting frame is provided with a connecting hole, the connecting member includes a threaded rod penetrating through the connecting hole and a first fixing nut for screw-fitting with the threaded rod in the main arm operation mode, and the second end of the connecting member and the first fixing nut are respectively located on two sides of the connecting hole in the main arm operation mode.

In some embodiments, the coupling further comprises a locknut that mates with the threads of the threaded rod in the primary arm mode of operation.

In some embodiments, the coupling member further comprises a second fixing nut for threadably engaging the threaded rod in the primary arm mode of operation, the second end of the coupling member and the second fixing nut being located on the same side of the attachment bore in the primary arm mode of operation.

In some embodiments, the first end of the connecting member includes an ear plate and a pin hole formed in the ear plate, and in the main arm operation mode, the pin hole formed in the ear plate and the pin hole formed in the plate section are connected by a pin.

According to the crane provided by the utility model, the connecting structure is arranged on the main arm, and the auxiliary arm pulling plate detachably connected between the main arm and the auxiliary arm support is arranged on the main arm, so that when the crane is switched between an auxiliary arm working mode and a main arm working mode, the auxiliary arm pulling plate can be correspondingly connected and detached between the part of the plate joint connected with the main arm and the part of the plate joint connected with the auxiliary arm support, the plate joint of the auxiliary arm pulling plate connected with the main arm can not be separated from the main arm all the time, and the connection and detachment work of the plate joint and the main arm is avoided. In the main arm working mode, the other end of the part of the plate section connected with the main arm can be fixedly connected with the connecting structure, and the part of the plate section can be stably and reliably remained on the main arm without influencing the normal work of the main arm in the main arm working mode. Therefore, the mode switching of the crane is convenient, quick and efficient.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

FIG. 1 is a schematic structural diagram of a crane according to an embodiment of the present invention;

fig. 2 is a partial structural schematic diagram of the crane of the embodiment shown in fig. 1.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. 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.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. 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, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 and 2, the crane of the present embodiment includes a base 1, a main jib 2, an auxiliary jib 3, an auxiliary jib pulling plate 5, and an auxiliary jib support.

The first end of the main arm 2 is connected to the base 1. The sub-arm pulling plate 5 includes a plurality of plate segments 51. The fly jib pulling plate 5 comprises a plurality of plate sections 51, and the plurality of plate sections 51 in the fly jib pulling plate 5 are detachably connected in an end-to-end connection manner. The end of the plate section 51 shown in fig. 2 is provided with a pin hole, and the pin holes of the adjacent plate sections 51 are connected by a pin shaft.

The crane has an auxiliary arm operation mode for lifting a heavy object by using the auxiliary arm 3 and a main arm operation mode for lifting a heavy object by using the main arm 2. In the auxiliary jib operating mode, a lifting device such as a hook block of the crane is mounted to the auxiliary jib 3, and in the main jib operating mode, a lifting device such as a hook block of the crane is mounted to the main jib 2.

As shown in fig. 2, the main arm 2 is provided with a connecting structure for fixedly connecting with the plate segment 51 of the sub arm pulling plate 5.

In the auxiliary arm working mode, the auxiliary arm 3 and the first end of the auxiliary arm support are both detachably arranged on the second end of the main arm 2, the second end of the auxiliary arm 3 is connected with the second end of the auxiliary arm support, the auxiliary arm pulling plate 5 is connected between the main arm 2 and the auxiliary arm support, the auxiliary arm pulling plate 5 is connected with the connecting part arranged on the main arm 2, in the embodiment shown in fig. 1, the sub-jib support frame comprises a first sub-jib support frame 41 and a second sub-jib support frame 42, the first sub-jib support frame 41 is connected with the main jib 2 through a sub-jib pulling plate 5, the second end of the sub-jib 3 is connected with the second sub-jib support frame 42, the second sub-jib support frame 42 is connected with the first sub-jib support frame 41 through a sub-jib luffing rope, the second end of the sub-jib 3 is indirectly connected with the first sub-jib support frame 41, the luffing of the jib in the jib operating mode is possible by varying the distance between the second ends of the first and

second jib support

41, 42 by telescoping of the jib luffing rope.

In the main arm working mode, the auxiliary arm bracket and the auxiliary arm 3 are both detached from the main arm 2, the part of the plate joint 51 connected with the auxiliary arm bracket of the auxiliary arm pulling plate 5 is separated from the part of the plate joint 51 connected with the main arm 2, the part of the plate joint 51 refers to one part of the plate joints 51 of the auxiliary arm pulling plate 5, namely, one part of the auxiliary arm pulling plate 51 is remained on the main arm 2, the other part is separated from the part remained on the main arm 2, and the separation of the two parts can be realized by pulling out the connecting pin shaft of the two adjacent plate joints 51 with pin holes. The end of the partial plate section 51 connected with the main arm 2 far away from the connecting part is fixedly connected with the connecting structure, namely, a part of the auxiliary arm pulling plate 5 connected with the main arm 2 is remained to be continuously connected with the main arm 2 through the end connected with the connecting part of the main arm 2, and the other end is fixedly connected with the connecting structure. So that the remaining part of the plate segments 51 is connected at both ends to the main arm 2.

The crane of the embodiment is provided with the connecting structure on the main arm 2, and the auxiliary arm pulling plate 5 comprising the plate sections 51 detachably connected with each other is connected between the main arm 2 and the auxiliary arm support, when the crane is switched between the auxiliary arm working mode and the main arm working mode, the auxiliary arm pulling plate 5 can be correspondingly connected and detached with the part of the plate sections 51 connected with the main arm 2 and the part of the plate sections 51 connected with the auxiliary arm support, the plate sections 51 of the auxiliary arm pulling plate 5 connected with the main arm 2 can not be separated from the main arm 2 all the time, and the connection and detachment work of the plate sections 51 and the main arm 2 is avoided. In the main arm operation mode, the other end of the partial plate section 51 connected to the main arm 2 can be fixedly connected to the connecting structure, and the partial plate section 51 can thus be stably and reliably left on the main arm 2 without affecting the normal operation of the main arm 2 in the main arm operation mode. Therefore, the mode switching of the crane is convenient, quick and efficient.

In some embodiments, as shown in fig. 2, the connecting structure comprises a connecting element and a connecting frame 31 arranged on the main arm 2, wherein a first end and a second end of the connecting element are respectively used for connecting with the connecting frame 31 and the partial plate joint 51 in the main arm operation mode, and the distance between the second end of the connecting element and the connecting frame 31 is adjustable. The second end of the connecting element is used for connecting with the part of the plate joint 51 left on the main arm 2 in the main arm working mode, and the distance between the second end of the connecting element and the connecting frame 31 is adjustable, so that the length of the part of the plate joint 51 left on the main arm 2 can be better adapted, and by adjusting the distance, the plurality of the plate joints 51 left on the main arm 2 can be more tightened or loosened, and meanwhile, the connection between the connecting element and the plate joint 51 left on the main arm 2 is more flexible and convenient.

In some embodiments, as shown in fig. 2, the connecting frame 31 is provided with a connecting hole, and the connecting member includes a threaded rod 323 passing through the connecting hole and a first fixing nut 321 for screw-coupling with the threaded rod 323 in the main arm operation mode, and the second end of the connecting member in the main arm operation mode and the first fixing nut 321 are respectively located at both sides of the connecting hole. In the embodiment shown in the figures, the connecting frame is located above the docking portion, i.e. in the main arm mode of operation, the height of the connecting frame above the docking portion is higher on the main arm 2, the first fixing nut 321 is located above the connecting frame, and the second end of the connecting member is located below the connecting frame. The connection mode of this embodiment can conveniently and quickly realize the connection between the connecting piece and the connecting frame and the plate section 51.

In some embodiments, as shown in fig. 2, the coupling further comprises a locknut 322, and in the primary arm mode of operation, locknut 322 mates with the threads of threaded rod 323. The mode makes the connection between connecting piece and the link more safe and reliable.

In some embodiments not shown, the coupling member further comprises a second fixing nut for threadably engaging the threaded rod 323 in the primary arm mode of operation, the second end of the coupling member and the second fixing nut being located on the same side of the coupling aperture in the primary arm mode of operation. The engagement of the second fixing nut with the threaded rod 323 is similar to the engagement of the first fixing nut 321 with the threaded rod. In the main arm operation mode, the first fixing nut 321 and the second fixing nut are respectively located at both sides of the link frame.

In some embodiments, as shown in fig. 2, the first end of the connecting member includes an ear plate 324 and a pin hole formed in the ear plate 324, and in the main arm operation mode, the pin hole formed in the ear plate 324 is connected to the pin hole of the plate segment 51 by a pin. In the embodiment shown in the figures, the first end of the connecting member includes an ear plate 324 for matching with the double-lug plate structure of the plate section 51, the pin hole of the ear plate 324 corresponds to the pin hole of the plate section 51, so that the plate section 51 and the ear plate 324 can be connected by using the pin shaft connected between the plate sections 51 of the sub-arm pulling plate when the plate section 51 and the ear plate 324 are connected, and the connection is convenient and quick. In some embodiments, the plate segment 51 to which the connector is connected is of a single-lug plate structure, and the first end of the connector may include two lugs 324, the two lugs 324 sandwiching the plate segment 51 of the single lug.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the utility model or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the utility model as defined by the appended claims.

Claims

1. A crane comprising a base (1), a main arm (2), an auxiliary arm (3), an auxiliary arm pull plate (5) and an auxiliary arm support, a first end of the main arm (2) being connected to the base (1), the auxiliary arm pull plate (5) comprising a plurality of segments (51) detachably connected in an end-to-end connection, the crane having an auxiliary arm mode of operation for lifting a heavy object by means of the auxiliary arm (3) and a main arm mode of operation for lifting a heavy object by means of the main arm (2), characterized in that the main arm (2) is provided with a connection structure for fixed connection to the segments (51) of the auxiliary arm pull plate (5), in the auxiliary arm mode of operation, both the first ends of the auxiliary arm (3) and the auxiliary arm support are detachably mounted to the second end of the main arm (2), and the second end of the auxiliary arm (3) is connected to the second end of the auxiliary arm support, the auxiliary arm pulling plate (5) is connected between the main arm (2) and the auxiliary arm support, and the auxiliary arm pulling plate (5) is connected with the connecting part of the main arm (2); in the main arm working mode, the auxiliary arm support and the auxiliary arm (3) are detached from the main arm (2), a part of the plate joint (51) connected with the auxiliary arm support of the auxiliary arm pulling plate (5) is separated from a part of the plate joint (51) connected with the main arm (2), and the end part, far away from the connecting part, of the part of the plate joint (51) connected with the main arm (2) is fixedly connected with the connecting structure.

2. A crane as claimed in claim 1, wherein the coupling arrangement comprises a coupling member and a coupling frame (31) arranged on the main arm (2), the coupling member having a first end and a second end for coupling to the coupling frame (31) and the segment (51), respectively, in the main arm mode of operation, the second end of the coupling member being adjustably distanced from the coupling frame (31).

3. The crane as claimed in claim 2, wherein the connecting frame (31) is provided with a connecting hole, and the connecting member comprises a threaded rod (323) passing through the connecting hole and a first fixing nut (321) for screw-coupling with the threaded rod (323) in the main arm operation mode, and the second end of the connecting member and the first fixing nut (321) are respectively located at both sides of the connecting hole in the main arm operation mode.

4. A crane as claimed in claim 3, wherein said coupling further comprises a locknut (322), said locknut (322) engaging the threads of said threaded rod (323) in said primary arm mode of operation.

5. A crane as claimed in claim 3, wherein said coupling member further comprises a second fixing nut for screw-engaging said threaded rod (323) in said primary arm mode of operation, said second end of said coupling member and said second fixing nut being located on the same side of said coupling aperture in said primary arm mode of operation.

6. A crane as claimed in claim 2, wherein the first end of the link member comprises an ear plate (324) and a pin hole provided in the ear plate (324), the pin hole of the ear plate (324) and the pin hole of the plate segment (51) being connected by a pin in the main arm mode of operation.