CN204802891U - Jib crane undersetting - Google Patents

Abstract

The utility model relates to a lower support of a jib crane, which belongs to the technical field of hoisting machinery. The utility model comprises an upper cover plate, a lower cover plate, a seat ring, an annular support plate, an outer rib plate, a connecting sleeve, an inner rib plate and a profiling middle support plate, the seat ring is fixed on the upper cover plate, the annular support plate, the outer rib plate The upper and lower ends of the ribs and the inner ribs are respectively connected with the upper cover and the lower cover, the connecting sleeves are fixed at the four ends of the upper cover and the lower cover, and the profiling mid-stay is located in the middle of the upper cover and the lower cover , the profiling middle support plate is sequentially connected with the annular support plate, the outer rib plate and the connecting sleeve. The utility model has the advantages of reasonable structure, small space occupation, compact structure, convenient installation and disassembly, convenient transportation and repeated recycling.

Description

Bottom support of a jib crane

technical field

The utility model relates to a lower support, in particular to a jib crane lower support, which has a compact structure and is light, and belongs to the technical field of hoisting machinery.

Background technique

The lower support of a traditional jib crane is generally composed of a large box structure, four outriggers, and various ribbed plates. These parts range from 20 to 30 types to as many as 50 or 60 types. The class structure brings many difficulties in manufacturing, processing, transportation and maintenance.

The lower support is an essential structure of the jib crane. How to economically and rationally design the lower support of a jib crane plays a key role in ensuring safety, eliminating hidden dangers of accidents, cost savings, and high technical efficiency during the entire construction process. Sexuality.

Therefore, there is currently no jib crane lower support that takes up little space, has a compact structure, is easy to install and disassemble, and is convenient to transport, and is widely used in construction sites in various environments.

Utility model content

The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art, and provide a kind of structure design reasonable, small space occupation, compact structure, easy to install and disassemble, convenient to transport, recyclable, widely used in various environments The lower support of the jib crane at the construction site.

The technical solution adopted by the utility model to solve the above problems is: the lower support of the jib crane includes upper and lower cover plates distributed up and down, and is characterized in that it also includes a seat ring, an annular support plate, an outer rib plate, The connecting sleeve, the inner rib plate and the profiling middle support plate, the seat ring is fixed on the upper cover plate, the upper and lower ends of the annular support plate, the outer rib plate and the inner rib plate are respectively connected with the upper cover plate and the lower cover plate, and the connection The sleeves are fixed on the four ends of the upper cover and the lower cover, and the profiling mid-stay is located in the middle of the upper and lower cover, and the profiling mid-stay is sequentially connected with the annular support plate, the outer ribs and the connecting sleeve.

As a preference, a plurality of slewing bearing holes are evenly distributed on the upper cover plate and the seat ring of the utility model.

As a preference, the inner rib plate of the utility model is fixed to the annular support plate, and each inner rib plate is distributed in the middle of the two slewing bearing holes.

As a preference, the upper and lower ends of the connecting sleeve of the utility model are respectively fixed to the upper cover plate and the lower cover plate, and the outer side of the connecting sleeve is horizontally and vertically connected to an outer rib plate.

As a preference, the outer diameter of the annular support plate of the utility model is the same as the outer diameter of the seat ring.

Compared with the prior art, the utility model has the following advantages and effects: 1. The structure is reasonable, and the lower supports of the jib crane are made and connected by metal steel, which occupies a small space and is convenient for installation and transportation; 2. The whole lower The support structure is only composed of eight parts, the structure is simple and compact, and it is suitable for standardized manufacturing.

Description of drawings

Fig. 1 is a schematic diagram of the overall front view of the embodiment of the utility model.

Fig. 2 is a half-sectional schematic diagram of the front view of the overall structure of the embodiment of the present invention.

In the figure: upper cover plate 1, seat ring 2, annular support plate 3, outer rib plate 4, connecting sleeve 5, inner rib plate 6, lower cover plate 7, profiling middle support plate 8, slewing bearing hole 9.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the utility model and the utility model is not limited to the following examples.

Example.

Referring to Figures 1 to 2, the lower support of the jib crane in this embodiment mainly includes an upper cover plate 1, a seat ring 2, an annular support plate 3, an outer rib plate 4, a connecting sleeve 5, an inner rib plate 6, and a lower cover plate 7 And profiling middle support plate 8.

The seat ring 2 in this embodiment is fixed on the upper cover plate 1, and a plurality of slewing bearing holes are evenly distributed on the upper cover plate 1 and the seat ring 2, and the inner rib plate 6 is fixed to the annular support plate 3, and each inner rib plate The plate 6 is distributed in the middle of the two slewing bearing holes, and the seat ring 2 is welded on the upper surface of the upper cover plate 1 under the premise of ensuring the positioning center. After the welding is completed, 22 slewing bearing holes 9 are evenly distributed according to the machining of the slewing bearing connecting holes.

The upper and lower ends of the annular support plate 3, the outer rib plate 4 and the inner rib plate 6 are respectively connected with the upper cover plate 1 and the lower cover plate 7, and the profiling middle support plate 8 is located in the middle of the upper cover plate 1 and the lower cover plate 7. The profiling center support plate 8 is connected with the annular support plate 3 , the outer rib plate 4 and the connection sleeve 5 in sequence.

The connection sleeve 5 in this embodiment is fixed on the four ends of the upper cover plate 1 and the lower cover plate 7, the upper and lower ends of the connection sleeve 5 are respectively fixed with the upper cover plate 1 and the lower cover plate 7, and the outside of the connection sleeve 5 is horizontal and vertical One outer rib plate 4 is connected respectively, and there are four connecting sleeves 5, which are welded in four connecting holes in turn. One end of the connecting sleeve 5 is welded with the upper cover plate 1, and the other end is welded with the lower cover plate 7.

The inner ribs 6 in this embodiment are ten, and the ten inner ribs 6 are welded and fixed in sequence according to the arrangement in Figure 2. The support plate 3 is fixed, and the ten inner rib plates 6 mainly play the role of auxiliary support.

In this embodiment, there are four profiling mid-stays 8, and the four profiling mid-stays 8 are welded in the middle of the upper cover 1 and the lower cover 7, one end is welded to the middle of the connecting sleeve 5, and the other end is connected to the ring support The middle part of the plate 3 is welded, and the four profiling middle support plates 8 are mainly to strengthen the torsional impact resistance of the lower support and prevent the crane from damaging the lower support structure due to slewing work.

There are eight outer ribs 4 in this embodiment, and the eight outer ribs 4 are sequentially welded between the upper cover 1 and the lower cover 7, and every two outer ribs 4 form a group, which are respectively connected with the connecting sleeve 5 and the profiling middle support plate 8 are connected to play the role of supporting the upper cover plate 1 and the lower cover plate 7.

The upper cover plate 1 and the lower cover plate 7 in this embodiment are made of plates of the same shape, and then the connection sleeve holes are processed on the upper cover plate 1 and the lower cover plate 7 according to the standard joint connection sleeve holes.

The outer diameter of the annular support plate 3 is the same as that of the seat ring 2, one end is welded on the lower surface of the upper cover plate 1, and the other end is welded on the upper surface of the lower cover plate 7, thereby forming a main support between the upper cover plate 1 and the lower cover plate 7 .

In this embodiment, the connecting sleeve 5 and the standard joint connecting sleeve are connected by high-strength bolts, so as to ensure the overall connection between the lower support and the tower body. The structure is symmetrical.

Through the above description, those skilled in the art can implement it.

In addition, it should be noted that the specific embodiments described in this specification may be different in parts, shapes and names of parts, and the above content described in this specification is only an illustration of the structure of the present invention. All equivalent changes or simple changes based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the definition defined in the claims scope, all should belong to the protection scope of the present utility model.

Claims (5)

1. an arm crane undersetting, comprise the upper cover plate and lower cover that distribute up and down, it is characterized in that: also comprise seat ring, annular backup pad, outside gusset, adapter sleeve, inner side gusset and profiling middle supporting plate, described seat ring is fixed on upper cover plate, annular backup pad, outside gusset are connected with upper cover plate and lower cover respectively with the upper and lower side of inner side gusset, adapter sleeve is fixed on four ends of upper cover plate and lower cover, profiling middle supporting plate is positioned at upper cover plate and lower cover middle, and this profiling middle supporting plate is connected with annular backup pad, outside gusset and adapter sleeve successively.

2. arm crane undersetting according to claim 1, is characterized in that: uniformly on described upper cover plate and seat ring have multiple pivoting support hole.

3. arm crane undersetting according to claim 1, is characterized in that: described inner side gusset and annular backup pad are fixed, and inside every block, gusset is distributed in middle, two pivoting support holes.

4. arm crane undersetting according to claim 1, is characterized in that: the upper and lower side of described adapter sleeve is fixed with upper cover plate and lower cover respectively, and the outside horizontal and vertical of adapter sleeve respectively connects one piece of outside gusset.

5. arm crane undersetting according to claim 1, is characterized in that: described annular backup pad external diameter is identical with seat ring external diameter.