CN221318971U - Single-beam cantilever portal crane - Google Patents

Abstract

The utility model discloses a single-beam cantilever portal crane which consists of rigid legs, bridge frame rigid leg sections, bridge frame middle sections, bridge frame flexible leg sections, bridge frame cantilever sections, hoist rails, flexible legs and walking beams, wherein the rigid legs are of detachable inverted Y-shaped structures, the tops of the rigid legs are connected with the bridge frame rigid leg sections, the bridge frame rigid leg sections are connected with the bridge frame flexible leg sections through at least one bridge frame middle section, and the bridge frame flexible leg sections are connected with the bridge frame cantilever sections; the flexible legs are connected with a connecting plate welded on the main chord of the bridge flexible leg section through three connecting rods through pin shafts; a hoist track is arranged at the bottoms of the rigid leg section, the middle section, the flexible leg section and the cantilever section of the bridge; the walking beam is arranged at the bottoms of the rigid leg and the flexible leg.

Description

Single-beam cantilever portal crane

Technical Field

The utility model relates to a single-beam cantilever portal crane structure which is applied to the mechanical fields of hoisting machinery and the like.

Background

The portal crane is mainly used for loading and unloading operations of outdoor goods yards, stock yards and bulk goods. The portal crane has the characteristics of high field utilization rate, large operation range, wide application range, strong universality and the like, and is widely used in port cargo yards.

The existing gantry crane has the problems of weak wind resistance, self weight, high wheel pressure, inconvenient disassembly and maintenance, high energy consumption, high transportation cost and the like, and specifically comprises the following steps: the rigid leg structure can not be reused and can only be redesigned and processed when the lifting height needs to be increased; and the rigid leg structure is mostly of an integral structure, even if the rigid leg structure can be detached, the detached part is relatively upper, the transportation overrun is relatively high, and the transportation cost is relatively high. The flexible leg and the main bridge frame are commonly connected by bolts, so that the installation and the disassembly are inconvenient. The cantilever part adopts an integral structure, and the transportation cost is high. The sections of the main bridge are connected by high-strength bolts, so that the structure is complex, and the assembly and the disassembly are inconvenient. The hoist track is connected with the bridge frame through the connecting plate by bolts, so that the dead weight is large, and the assembly and the disassembly are inconvenient.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art, and provides a single-beam cantilever portal crane, wherein the main structure of the single-beam cantilever portal crane adopts a steel pipe truss structure, and the single-beam cantilever portal crane has the advantages of attractive and coordinated appearance, small windward area, strong wind resistance, light dead weight, low wheel pressure, simplicity and convenience in disassembly and maintenance, low energy consumption, low transportation cost and the like. The novel portal crane is specially developed for the use characteristics of frequent disassembly and assembly, frequent transition, no large-scale mobile crane for primary approach installation, changeable use environment and the like.

The utility model provides a single-beam cantilever portal crane which comprises rigid legs, a bridge rigid leg section, a bridge middle section, a bridge flexible leg section, a bridge cantilever section, a hoist track, flexible legs and a walking beam; the rigid legs are of detachable inverted Y-shaped structures, the tops of the rigid legs are connected with bridge frame rigid leg sections, the bridge rigid leg section is connected with the bridge flexible leg section through at least one bridge middle section, and the bridge flexible leg section is connected with the bridge cantilever section; the flexible legs are connected with a connecting plate welded on the main chord of the bridge flexible leg section through three connecting rods through pin shafts; a hoist track is arranged at the bottom of the rigid leg section, the middle section and the flexible leg section of the bridge and the cantilever section of the bridge; the walking beam is arranged at the bottoms of the rigid leg and the flexible leg.

As a further technical scheme, the rigid leg comprises a rigid leg upper section and a rigid leg lower section, wherein the rigid leg upper section and the rigid leg lower section are connected through high-strength bolts, and the rigid leg lower section is formed by connecting a left section and a right section which are obliquely arranged to form an acute angle and form an inverted Y-shaped structure together with the rigid leg upper section; and the upper sections and the lower sections of the rigid legs are respectively welded by steel pipes.

As a further technical scheme, the rigid leg upper section is connected with the bridge rigid leg section through a convex-concave flange.

As a further technical scheme, four corners of the rigid leg and the walking beam connecting flange at the bottom of the rigid leg are provided with 4 hinged hole bolts, and the rest are fixed by high-strength bolts.

As a further technical scheme, the connection positions of the flexible legs and the bridge flexible leg sections are connected by pin shafts.

As a further technical scheme, 4 hinging hole bolts are adopted at four corners of the flexible legs and the walking beam connecting flange at the bottom of the flexible legs, and the balance of the flexible legs and the walking beam connecting flange are high-strength bolts for fixing, so that the flexible legs and the walking beam connecting flange are convenient to install and dismantle.

As a further technical scheme, the bridge middle sections, the bridge rigid leg sections and the bridge middle sections and the bridge flexible leg sections and the bridge middle sections are respectively connected through pin shafts.

As a further technical scheme, the cantilever section adopts a detachable structure and comprises an upper main string, a lower main string and a web member, wherein the upper main string, the lower main string and the web member are connected together through a pin shaft.

As a further technical scheme, the hoist track comprises a web plate and a flange plate, wherein the web plate and the flange plate are mutually perpendicular, and the web plate is directly welded on the lower main chord at the bottom of the bridge middle section, the bridge rigid leg section and the bridge flexible leg section, so that the dead weight of the structure is effectively reduced.

The beneficial effects of the utility model are as follows:

The single-beam cantilever portal crane is structurally improved through a plurality of angles, so that the single-beam cantilever portal crane has the advantages of attractive and coordinated appearance, small windward area, strong wind resistance, light dead weight, low wheel pressure, simplicity and convenience in disassembly and maintenance, low energy consumption, low transportation cost and the like. The rigid leg is of an inverted Y-shaped detachable structure, is connected with the main bridge frame through a convex-concave flange and is connected with the main bridge frame through a high-strength bolt, the rigid leg comprises an upper rigid leg section and a lower rigid leg section, the upper section and the lower rigid leg section are connected through a high-strength bolt, the upper rigid leg section and the lower rigid leg section can be detached into a left part and a right part, the left part and the right part are formed by welding steel pipes, and the left part and the right part are connected through the high-strength bolt. When the lifting height of the door machine needs to be increased, only one section of straight section can be added, and the original rigid legs can be reused, so that the door machine is beneficial to upgrading and reconstruction of products; the upper sections of the rigid leg sections can be detached, so that the transportation overrun is obviously reduced, and the transportation cost is saved. The four corners of the connecting flange of the rigid leg and the walking beam are provided with 4 hinged hole bolts, and the rest are fixed by high-strength bolts, so that the connecting flange is convenient to install and remove. The flexible legs and the bridge frame are connected by adopting pin shafts, four corners of the connecting flange of the walking beam are provided with 4 hinged hole bolts, and the rest are fixed by high-strength bolts, so that the flexible leg and the bridge frame are convenient to install and remove. The bridge frame provided by the utility model has the advantages that the sections are connected by adopting the pin shafts, the structure is simple, and the mounting and dismounting are convenient. The cantilever section of the utility model adopts a detachable structure, and the upper main chord, the lower main chord and the web member are connected together by the pin shaft, so that the transportation cost can be effectively reduced. The hoist track is vertically and centrally cut by the I-steel, and the I-steel web plate is directly welded on the lower main chord of the bridge frame, namely, the hoist track comprises a web plate and a flange plate, the web plate and the flange plate are mutually vertical, and the web plate is directly welded on the lower main chord at the bottom of the bridge frame middle section, the bridge frame rigid leg section and the bridge frame flexible leg section, so that the dead weight of the structure is effectively reduced. The walking beam adopts an I-steel splicing mode, is simple to manufacture and can effectively lighten dead weight.

Drawings

FIG. 1 is a schematic diagram of a cantilever single-beam gantry crane;

FIG. 2 is a schematic view of the structure of the walking beam and the flexible leg and rigid leg connecting flanges;

fig. 3 (a) and 3 (b) are schematic views of concave-convex flanges;

FIGS. 4 (a) and 4 (b) are schematic structural views of rigid legs;

FIG. 5 is a schematic view of the structure of the rigid leg section of the bridge;

FIG. 6 is a schematic view of the first bridge middle section;

FIG. 7 is a schematic view of the second bridge middle section;

FIG. 8 is a schematic view of the structure of the flexible leg section of the bridge;

fig. 9 (a), 9 (b) and 9 (c) are schematic views of pin holes and pins;

FIG. 10 is a schematic structural view of a bridge cantilever section;

FIG. 11 is a schematic view of the structure of the lower main chord of the cantilever section;

FIG. 12 is a schematic view of the structure of the main chord on the cantilever section;

FIG. 13 is a schematic view of a cantilever web member;

FIGS. 14 (a) and 14 (b) are schematic diagrams of upper and lower main chord connection joints of each section of the bridge;

Fig. 15 (a) and 15 (b) are schematic structural views of the hoist track;

FIG. 16 is a schematic structural view of a flexible leg;

fig. 17 is a schematic view of the structure of the walking beam.

In the figure: 1 rigid leg, 101 rigid leg upper section, 102 rigid leg lower section;

2 bridge rigid leg sections, 201 upper main strings, 202 web members, 203 upper main string joints, 204 lower main string joints and 205 lower main strings;

3 first bridge middle section, 301 upper main chord, 302 upper main chord joint, 303 web member, 304 lower main chord joint, 305 lower main chord;

the second bridge middle section, 401 upper main chord, 402 upper main chord joint, 403 web member, 404 lower main chord joint, 405 lower main chord;

5 bridge flexible leg segments, 501 upper main chord, 502 upper main chord joint, 503 web member, 504 lower main chord joint, 505 lower main chord;

6 bridge cantilever section, 601 upper main chord, 602 web member, 603 upper main chord joint, 604 lower main chord, 605 lower main chord joint;

7 calabash tracks, 701I-steel, 702 rib plates, 703 transverse positioning blocks I, 704 bottom flitch and 705 transverse positioning blocks II;

8 flexible legs, 801 flexible leg main limbs, 802 flexible leg web members, 803 flexible legs and walking beam connecting flanges, 804 flexible legs and bridge connecting rods I, 805 flexible legs and bridge connecting rods II, 806 flexible legs and bridge connecting rods III;

9 walking beams, 901I-steel, 902 connecting plates, 903 flange connecting plates and 904 walking mechanism connecting lug plates.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular forms also are intended to include the plural forms unless the present utility model clearly dictates otherwise, and furthermore, it should be understood that when the terms "comprise" and/or "include" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

The present embodiment provides a single-beam cantilever gantry crane, as shown in fig. 1. The single-beam cantilever type portal crane structure consists of a rigid leg 1, a bridge rigid leg section 2, a first bridge middle section 3, a second bridge middle section, a bridge flexible leg section 5, a bridge cantilever section 6, a hoist track 7, a flexible leg 8 and a walking beam 9; the rigid leg 1 is connected with the bridge rigid leg section 2, and the bridge rigid leg section 2 is connected with the first bridge middle section 3, the second bridge middle section, the bridge flexible leg section 5 and the bridge cantilever section 6 which are connected in sequence; the flexible legs are connected with a connecting plate welded on the main chord of the bridge flexible leg section through 3 connecting rods through pin shafts; a hoist track 7 is arranged at the bottom of the rigid leg section, the middle section and the flexible leg section of the bridge and the cantilever section of the bridge; the walking beam 9 is arranged at the bottoms of the rigid leg and the flexible leg.

The rigid legs and the flexible legs are connected with the walking beam in a combined mode of hinging hole bolts and high-strength bolts, the four corners of the flange are connected through the hinging hole bolts to play a role in positioning, and the rest of the flange is connected through the high-strength bolts, so that the walking beam is convenient to install and remove, as shown in fig. 2.

The rigid legs 1 are of an inverted Y-shaped detachable structure, are connected with the main bridge frame through convex and concave flanges by high-strength bolts, are convenient to install and detach, and improve the horizontal shearing resistance; as shown in fig. 4 (a) and 4 (b). Specifically, the rigid leg 1 includes a rigid leg upper section 101 and a rigid leg lower section 102, the rigid leg upper section 101 and the rigid leg lower section 102 are connected by high-strength bolts, the rigid leg lower section 102 is formed by connecting left and right sections which are obliquely arranged, the rigid leg upper section 101 and the rigid leg lower section 102 are respectively formed by welding steel pipes, the rigid leg upper section and the rigid leg lower section can be split into left and right parts, the left and right parts are formed by welding steel pipes, and the left and right parts are connected by high-strength bolts.

Further, the bridge rigid leg section 2 in this embodiment includes two parts, wherein a part on the left is a rectangular frame and a part on the right is a triangular frame; the bottom of the rectangular frame is connected with the top of the rigid leg 1, one end of the triangular prism frame is connected with the rectangular frame, and the other end of the triangular prism frame is connected with the first bridge middle section 3; wherein, the triangular prism frame part mainly comprises an upper main chord 201, a web member 202, an upper main chord joint 203, a lower main chord joint 204 and a lower main chord 205, as shown in fig. 5; the two upper main strings 201 are parallel to each other and connected with two string rods at the top of the rectangular frame, and the lower main string 205 is connected to the central position at the bottom of the rectangular frame; the upper main chord joint 203 is arranged at the end part of the upper main chord 201, and the lower main chord joint 204 is arranged at the end part of the lower main chord 205; the upper main strings 201 and the lower main strings 205 are connected with each other through a plurality of web members 202; the upper main chord joint 203 and the lower main chord joint 204 are used for being connected with the first bridge middle section 3;

the first bridge middle section 3 in this embodiment is integrally a triangular prism frame, and is composed of an upper main chord 301, an upper main chord joint 302, a web member 303, a lower main chord joint 304, and a lower main chord 305, as shown in fig. 6; the upper main strings 301 comprise two upper main strings 301 which are parallel to each other, an upper main string connector 302 is arranged at two ends of the upper main string 301, and a lower main string connector 304 is arranged at two ends of a lower main string 305 and is used for being connected with the second bridge middle section 4 and the bridge rigid leg section 2; the upper main strings 301 and the lower main strings 305 and the two upper main strings 301 are connected through a plurality of web members 303.

Further, the second bridge middle section in this embodiment has substantially the same structure as the first bridge middle section, and also comprises an upper main chord 401, an upper main chord joint 402, a web member 403, a lower main chord joint 404, and a lower main chord 405, as shown in fig. 7; the upper main strings 401 are parallel to each other, the upper main string joints 402 are arranged at two ends of the upper main strings 401, and the lower main string joints 404 are arranged at two ends of the lower main strings 405 and are used for being connected with the first bridge middle section 3 and the bridge flexible leg section 5; the upper main strings 401 and the lower main strings 405 and the two upper main strings 401 are connected by a plurality of web members 403.

The second bridge middle section is connected with the first bridge middle section through a pin shaft, and in particular, see fig. 8.

Further, a rigid-flexible leg structure is adopted. The influence of temperature deformation is avoided by correctly designing the slenderness ratio of the flexible legs, and the bridge frame section connected with the flexible legs is called a bridge frame flexible leg section. The bridge flexible leg section in this embodiment is composed of an upper main chord 501, an upper main chord joint 502, a web member 503, a lower main chord joint 504, and a lower main chord 505, as shown in fig. 8; the upper main strings 501 comprise two upper main strings 501, the two upper main strings 501 are parallel to each other, an upper main string connector 502 is arranged at two ends of the upper main strings 501, and a lower main string connector 504 is arranged at two ends of the lower main strings 505 and is used for being connected with the first bridge middle section 4 and the bridge cantilever section 6; the upper main strings 401 and the lower main strings 405 and the two upper main strings 401 are connected by a plurality of web members 403.

Further, the bridge cantilever section is composed of an upper main chord 601, a web member 602, an upper main chord joint 603, a lower main chord 604, and a lower main chord joint 605, as shown in fig. 10; the cantilever section adopts a detachable structure, the upper main chord 601 (figure 11), the lower main chord 604 (figure 12) and the web member 602 (figure 13) are connected together by a pin shaft, and the detachable structure can effectively reduce the transportation cost; the upper main strings 601 comprise two upper main strings 601, the left ends of the two upper main strings 601 are connected with the bridge flexible leg sections, and the right ends of the two upper main strings are connected with the end parts of the lower main strings 604; and the left ends of the two upper main strings 601 are also connected with the middle parts of the lower main strings 604 by copper drums, and the left ends of the lower main string joints 605 are connected with the lower main string joints 504 of the bridge flexible leg sections.

The upper and lower main chord joints among the bridge frame sections in the embodiment are respectively connected through pin shafts, as shown in fig. 14 (a) and fig. 4 (b).

Furthermore, the hoist track 7 consists of I-steel 701, a rib plate 702, a first transverse positioning block 703, a bottom flitch 704 and a second transverse positioning block 705, wherein the I-steel 701 and the rib plate are welded on the lower main chord of the bridge, and the first transverse positioning block 703 and the second transverse positioning block 705 are additionally arranged at the bottom for transverse positioning; as shown in fig. 15 (a) and 15 (b).

Further, the flexible leg 8 of the present embodiment comprises two legs connected to a connecting means at the upper part of the legs; wherein an acute angle is formed between the two supports, each leg is composed of two flexible leg main limbs 801 and a flexible leg web member 802 connecting the main limbs; the bottom of the flexible leg is connected with a walking beam connecting flange 803; the flexible leg 8 is connected with a connecting sheet welded on the flexible leg section of the bridge through a first bridge connecting rod 804, a second bridge connecting rod 805 and a third bridge connecting rod 806 by a pin shaft; as shown in fig. 16. The flexible legs 8 are connected to the walking beam at the bottom by a combination of a toggle hole bolt and a high strength bolt, as shown in fig. 16.

Further, the walking beam 9 in the embodiment is composed of I-steel 901, a connecting plate 902, a flange connecting plate 903 and a walking mechanism connecting lug 904, as shown in fig. 17, and the walking beam is simple to manufacture and process and can effectively reduce dead weight; the bottom of the I-steel 901 is provided with a running mechanism connecting lug plate 904, the running mechanism connecting lug plate 904 is connected with the roller, the I-steel 901 is provided with connecting plates 902 at intervals, flange connecting plates 903 are arranged at two ends of the I-steel 901, the running beams 9 at the bottoms of the rigid legs are connected with the bottoms of the rigid legs 1, the flange connecting plates 903 are connected with the running beams 9 at the bottoms of the flexible legs, and the flange connecting plates 903 are connected with the bottoms of the flexible legs 1.

In a word, the single-beam cantilever portal crane is structurally improved through a plurality of angles, so that the single-beam cantilever portal crane has the advantages of attractive and coordinated appearance, small windward area, strong wind resistance, light dead weight, low wheel pressure, simplicity and convenience in disassembly and maintenance, low energy consumption, low transportation cost and the like. The rigid leg is of an inverted Y-shaped detachable structure, is connected with the main bridge frame through a convex-concave flange and is connected with the main bridge frame through a high-strength bolt, the rigid leg comprises an upper rigid leg section and a lower rigid leg section, the upper section and the lower rigid leg section are connected through a high-strength bolt, the upper rigid leg section and the lower rigid leg section can be detached into a left part and a right part, the left part and the right part are formed by welding steel pipes, and the left part and the right part are connected through the high-strength bolt. When the lifting height of the door machine needs to be increased, only one section of straight section can be added, and the original rigid legs can be reused, so that the door machine is beneficial to upgrading and reconstruction of products; the upper sections of the rigid leg sections can be detached, so that the transportation overrun is obviously reduced, and the transportation cost is saved. The four corners of the connecting flange of the rigid leg and the walking beam are provided with 4 hinged hole bolts, and the rest are fixed by high-strength bolts, so that the connecting flange is convenient to install and remove. The flexible legs and the bridge frame are connected by adopting pin shafts, four corners of the connecting flange of the walking beam are provided with 4 hinged hole bolts, and the rest are fixed by high-strength bolts, so that the flexible leg and the bridge frame are convenient to install and remove. The bridge frame provided by the utility model has the advantages that the sections are connected by adopting the pin shafts, the structure is simple, and the mounting and dismounting are convenient. The cantilever section of the utility model adopts a detachable structure, and the upper main chord, the lower main chord and the web member are connected together by the pin shaft, so that the transportation cost can be effectively reduced. The hoist track is vertically and centrally cut by the I-steel, and the I-steel web plate is directly welded on the lower main chord of the bridge frame, namely, the hoist track comprises a web plate and a flange plate, the web plate and the flange plate are mutually vertical, and the web plate is directly welded on the lower main chord at the bottom of the bridge frame middle section, the bridge frame rigid leg section and the bridge frame flexible leg section, so that the dead weight of the structure is effectively reduced. The walking beam adopts an I-steel splicing mode, is simple to manufacture and can effectively lighten dead weight.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A single-beam cantilever portal crane consists of rigid legs, bridge rigid leg sections, bridge middle sections, bridge flexible leg sections, bridge cantilever sections, hoist rails, flexible legs and walking beams; the bridge is characterized in that the rigid legs are of a detachable inverted Y-shaped structure, the tops of the rigid legs are connected with bridge rigid leg sections, the bridge rigid leg sections are connected with bridge flexible leg sections through at least one bridge middle section, and the bridge flexible leg sections are connected with bridge cantilever sections; the flexible legs are connected with a connecting plate welded on the main chord of the bridge flexible leg section through three connecting rods through pin shafts; a hoist track is arranged at the bottom of the rigid leg section, the middle section and the flexible leg section of the bridge and the cantilever section of the bridge; the walking beam is arranged at the bottoms of the rigid leg and the flexible leg.

2. The single-beam cantilever portal crane of claim 1, wherein the rigid leg comprises an upper rigid leg section and a lower rigid leg section, the upper rigid leg section and the lower rigid leg section are connected through high-strength bolts, and the lower rigid leg section is formed by connecting left and right sections which are obliquely arranged to form an acute angle and form an inverted-Y structure together with the upper rigid leg section.

3. The single beam cantilever gantry crane according to claim 2, wherein the upper and lower rigid leg sections are each welded with steel tubing.

4. The single beam cantilever gantry crane according to claim 2, wherein the upper rigid leg section is connected to the rigid leg section of the bridge by means of male and female flanges.

5. The single-beam cantilever portal crane of claim 1, wherein the four corners of the rigid leg and the bottom walking beam connecting flange are fixed by adopting reaming bolts, and the rest are all high-strength bolts.

6. The single beam cantilever gantry crane according to claim 1, wherein the flexible legs are connected to the bridge cantilever sections and the bridge flexible leg sections by pins.

7. The single-beam cantilever portal crane of claim 1, wherein four corners of the flexible leg and the bottom walking beam connecting flange are fastened by hinging hole bolts, and the rest are all high-strength bolts.

8. The single beam cantilever gantry crane according to claim 1, wherein the bridge middle sections, the bridge rigid leg sections and the bridge middle sections, and the bridge flexible leg sections and the bridge middle sections are each connected by a pin.

9. The single beam cantilever gantry crane according to claim 1, wherein the cantilever section is of a detachable construction comprising an upper main chord, a lower main chord, and a web member, the upper main chord, the lower main chord, and the web member being connected together by a pin.

10. The single beam cantilever gantry crane of claim 1, wherein the hoist rail comprises a web and a flange plate, the web and flange plate being perpendicular to each other, the web being welded directly to the lower major chords of the bridge rigid leg section, the bridge middle section, the bridge flexible leg section, and the bridge cantilever section bottom.