CN111532998A - Assembled large-tonnage beam erecting crane and beam erecting method - Google Patents
Assembled large-tonnage beam erecting crane and beam erecting method Download PDFInfo
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- CN111532998A CN111532998A CN202010350840.6A CN202010350840A CN111532998A CN 111532998 A CN111532998 A CN 111532998A CN 202010350840 A CN202010350840 A CN 202010350840A CN 111532998 A CN111532998 A CN 111532998A
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- assembled
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/20—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
- B66C23/202—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures with supporting couples provided from below, e.g. by floors of buildings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an assembled large-tonnage beam erecting crane and a beam erecting method, relating to the technical field of bridge engineering construction equipment and comprising the following steps: the device comprises a first pre-installed rack A, a second pre-installed rack A ', an intermediate connecting assembly B, a lifting appliance 401 connected with the first pre-installed rack A and the second pre-installed rack A ', and a lifting assembly 402, wherein the first pre-installed rack A and the second pre-installed rack A ' respectively comprise two truss sheets 100, and a front cross beam 201, a middle cross beam 202 and a rear cross beam 203 which are connected between the two truss sheets 100; the intermediate connection assembly B is connected between the first pre-assembled housing a and the second pre-assembled housing a'. The assembled large-tonnage beam erecting crane provided by the invention can be assembled or disassembled in a modular manner, the assembling or disassembling steps are simple, the mounting and disassembling are convenient, and the construction period is saved.
Description
Technical Field
The invention relates to the technical field of bridge engineering construction equipment, in particular to an assembled large-tonnage beam erecting crane and a beam erecting method.
Background
At present, the method adopted by the erection of steel bridges at home and abroad is basically two methods of loose assembly and segmental hoisting. The railway truss bridge built in early days in China is basically assembled in bulk under the influence of the hoisting capacity of a crane, the workload of on-site rod assembly and bolt screwing is large, the high-altitude construction is realized, and the operation environment is poor. With the improvement of manufacturing process, erection process and crane lifting capacity, the methods of segment lifting erection are adopted for the Changjiang bridge of Chongqing vegetable garden dam, the Changjiang bridge of Wuhan Tianxing Zhou and the like which are built in China in recent years. By adopting segment hoisting, a large amount of rod piece splicing and bolt screwing work is completed in a steel beam manufacturing plant or a steel beam pre-splicing plant, the construction operation environment is obviously improved, the construction quality is improved, and the on-site splicing speed is accelerated.
When the girder erection crane is used for hoisting the sections, the large-tonnage girder erection crane is needed for hoisting the bridge sections with larger weight. The existing large-tonnage beam erecting crane usually adopts a two-truss or three-truss type design, needs to be assembled at a preset position on a bridge deck during use, and needs to be disassembled and transported away from the bridge deck after use.
However, the existing large-tonnage beam erecting crane has the disadvantages of large assembly and disassembly workload and long construction period due to the fact that the components are scattered and large in number and the operation is complex during installation and disassembly.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an assembled large-tonnage beam erecting crane and a beam erecting method, which can carry out modular assembly or disassembly, have simple assembly or disassembly steps, are convenient to install and disassemble and save the construction period.
In a first aspect, the present invention provides an assembled large tonnage beam erecting crane, comprising:
first pre-installation frame and second pre-installation frame, first pre-installation frame with the second pre-installation frame all includes:
-two truss sheets;
-a front, middle and rear cross member connected between the two truss sheets;
an intermediate connection assembly connected between the first pre-mount frame and the second pre-mount frame;
and the lifting appliance and the lifting assembly are connected with the first pre-installed rack and the second pre-installed rack.
On the basis of the technical scheme, each truss piece comprises:
an upper main beam;
a lower main beam;
the upper end of the front stay bar is connected with the front end of the upper main beam, and the lower end of the front stay bar is connected with the front end of the lower main beam;
the upper end of the rear pull rod is connected with the rear end of the upper main beam, and the lower end of the rear pull rod is connected with the rear end of the lower main beam;
and the upper end of the upright post is connected with the connecting point of the upper main beam and the rear pull rod, and the lower end of the upright post is connected with the connecting point of the lower main beam and the front support rod.
On the basis of the technical scheme, the front cross beam is connected to the front ends of the two upper main beams.
On the basis of the technical scheme, the middle cross beam comprises:
the middle-upper cross beam is connected to the rear ends of the two upper main beams;
and the middle lower cross beam is connected to the middle parts of the two upright columns.
On the basis of the technical scheme, the rear cross beam is connected to the rear ends of the two lower main beams.
On the basis of the technical scheme, the two front support rods of the first pre-installed rack and the second pre-installed rack are connected through a middle connecting assembly.
On the basis of the technical scheme, the two front cross beams of the first pre-installed rack and the second pre-installed rack are connected through a middle connecting assembly.
On the basis of the technical scheme, the two middle and upper cross beams of the first pre-installed rack and the second pre-installed rack are connected through a middle connecting assembly.
On the basis of the technical scheme, the first pre-installed rack and the second pre-installed rack are connected with the middle connecting assembly through bolts.
On the basis of the technical scheme, the middle connecting assembly is a connecting rod.
In a second aspect, the invention provides a beam erecting method of an assembled large-tonnage beam erecting crane, which comprises the following steps:
splicing the first pre-installed rack A and the second pre-installed rack A' is finished respectively;
assembling the middle connecting assembly B on a first pre-installed rack A, and integrally conveying the first pre-installed rack A to a preset position on a bridge floor;
the second pre-installed rack A 'is integrally conveyed to the bridge floor, and the assembly between the first pre-installed rack A and the second pre-installed rack A' is completed through the middle connecting assembly B;
mounting the spreader 401 and associated lifting assembly 402 to a first pre-assembled frame a and a second pre-assembled frame a';
and carrying out hoisting operation.
On the basis of the technical scheme, after the hoisting operation is finished, the method further comprises the following steps:
the spreader 401 and associated hoisting assembly 402 are removed and the intermediate connection assembly B is released;
respectively transporting the first pre-installed rack A and the second pre-installed rack A' away from the bridge floor;
the first pre-assembled rack a and the second pre-assembled rack a' are disassembled under the bridge.
The large-tonnage beam erecting crane provided by the invention can be used for quickly and modularly assembling on a bridge and also can be used for disassembling the first pre-assembling rack and the second pre-assembling rack one by one after respectively conveying the first pre-assembling rack and the second pre-assembling rack to the bridge bottom during disassembling, so that the assembling and disassembling workload on the bridge bottom is effectively reduced, and the beam erecting construction period is saved.
Drawings
FIG. 1 is a left side view of an assembled large tonnage beam crane of an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of an assembled large-tonnage beam erecting crane according to an embodiment of the present invention.
FIG. 3 is a schematic structural diagram of an assembled large-tonnage beam erecting crane according to an embodiment of the present invention.
In the figure: a-a first pre-assembled rack; a' -a second pre-assembled rack; b-an intermediate connection assembly; 100-truss sheets; 101-upper main beam; 102-lower main beam; 103-front stay bar; 104-rear pull rod; 105-a pillar; 201-front beam; 202-middle cross beam; 222-middle lower beam; 203-rear cross beam; 204-a linking system; 300-a connecting rod; 401-a spreader; 402-hoisting assembly.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples, taking construction of a stay cable bridge as an example.
Referring to fig. 1 and 2, an embodiment of the present invention provides an assembled large-tonnage beam erecting crane, which includes: a first pre-mount rack a and a second pre-mount rack a', both of which comprise:
two truss sheets 100;
a front cross member 201, a middle cross member 202, a rear cross member 203 connected between the two truss sheets 100;
an intermediate connection assembly B connected between the first pre-assembled housing A and the second pre-assembled housing A';
a spreader 401 and a lifting assembly 402 connected to the first pre-assembled frame a and the second pre-assembled frame a'.
In the actual use process, the first pre-installed rack A and the second pre-installed rack A ' are respectively used as independent sub-modules, when a large-tonnage beam crane needs to be assembled, the first pre-installed rack A and the second pre-installed rack A ' are respectively spliced under a bridge, the intermediate connecting assembly B is assembled on the first pre-installed rack A, then a large-scale hoisting device is used for integrally conveying the first pre-installed rack A provided with the intermediate connecting assembly B to a preset position on a bridge floor and fixing the first pre-installed rack A, finally the second pre-installed rack A ' is integrally conveyed to the bridge floor, the assembly between the first pre-installed rack A and the second pre-installed rack A ' is completed through the intermediate connecting assembly B, and finally the lifting appliance 401 and the related lifting assembly 402 are installed on the first pre-installed rack A and the second pre-installed rack A ', so that the assembly of the large-tonnage beam crane can be completed. When the crane is dismantled, the lifting appliance 401 and the related lifting assembly 402 can be dismantled, the middle connecting assembly B is then dismantled, the first pre-installed rack a and the second pre-installed rack a 'are respectively transported away from the bridge floor by using large-scale hoisting equipment, and then the large-tonnage beam erecting crane can be dismantled, and the first pre-installed rack a and the second pre-installed rack a' are dismantled under the bridge and are arranged and stored. Therefore, the beam erecting crane has the advantages of small workload for assembling or disassembling the beam erecting crane on the bridge floor, simple operation and capability of effectively saving the beam erecting period.
In particular, in an embodiment of the invention, the first pre-assembled housing a and the second pre-assembled housing a' are bolted to the intermediate connection assembly B.
Further, each of the truss pieces 100 includes: the structure comprises an upper main beam 101, a lower main beam 102, a front stay 103, a rear pull rod 104 and a column 105, wherein the upper end of the front stay 103 is connected to the front end of the upper main beam 101, and the lower end of the front stay 103 is connected to the front end of the lower main beam 102; the upper end of the rear pull rod 104 is connected to the rear end of the upper main beam 101, and the lower end is connected to the rear end of the lower main beam 102; the upper end of the upright post 105 is connected with the connection point of the upper main beam 101 and the rear pull rod 104, and the lower end is connected with the connection point of the lower main beam 102 and the front stay 103. The modules of the truss sheet 100 are bolted together by high-strength bolts for ready disassembly or reconnection.
Preferably, in the present embodiment, the upper main beam 101, the front stay 103 and the pillar 105 constitute a stable right triangle structure, and the lower main beam 102, the rear stay 104 and the pillar 105 constitute a stable right triangle structure.
Referring to fig. 2 and 3, in the embodiment of the present invention, a front cross beam 201 is connected to the front ends of two upper main beams 101; the middle cross beam 202 further comprises a middle and lower cross beam 222, which is not visible in the drawing, connected to the rear ends of the two upper main beams 101, and the middle and lower cross beam 222 is connected to the middle of the two upright posts 105; the rear cross member 203 is connected to the rear ends of the two lower main beams 102. Thus, the two truss sheets 100 in the first pre-assembled rack a are connected by the front cross member 201, the middle and upper cross member, the middle and lower cross member 222 and the rear cross member 203, and the components are bolted by high-strength bolts to form a complete set of the first pre-assembled rack a. The assembly of the second pre-assembled housing a' can be accomplished in the same way.
In the embodiment of the invention, in order to be matched with construction of a stay cable bridge, the distance between the first pre-installed rack A and the second pre-installed rack A' is wider, so that a space is reserved for hanging a stay cable in the middle of the bridge subsequently.
Preferably, in the embodiment of the present invention, the middle connection assembly B is a connection rod 300.
Specifically, in the embodiment of the present invention, the two front cross beams 201 of the first pre-assembled rack a and the second pre-assembled rack a' are connected by a connecting rod 300. In actual operation, the connecting rod 300 is connected to the right end of the front cross beam 201 of the first pre-assembled rack a by a high-strength bolt, and then the left end of the front cross beam 201 of the second pre-assembled rack a 'is bolted to the right end of the connecting rod 300, so that the connection between the front cross beams 201 of the first pre-assembled rack a and the second pre-assembled rack a' is completed.
Specifically, in the present embodiment, the two middle and upper cross beams of the first pre-assembled rack a and the second pre-assembled rack a' are connected by a connecting rod 300. In actual operation, the connecting rod 300 is connected to the right end of the middle upper cross beam of the first pre-installed rack a through a high-strength bolt, and then the left end of the middle upper cross beam of the second pre-installed rack a 'is bolted to the right end of the connecting rod 300, so that the connection between the middle upper cross beams of the first pre-installed rack a and the second pre-installed rack a' can be completed.
Specifically, in the present embodiment, the two front stays 103 of the first pre-assembled housing a and the second pre-assembled housing a' are connected by a connecting rod 300. Since the girder erection crane needs to walk on the bridge floor during actual use, and obstacles such as bridge cables may exist on the bridge floor, the connecting rod 300 is disposed between the middle upper parts of the two front support rods 103 to avoid impacting the obstacles on the bridge floor to influence the walking of the girder erection crane. Meanwhile, the connecting rods 300 are not provided between the two rear cross beams 203 located near the deck to avoid interference with the traveling of the girder erection cranes.
Further, the first pre-assembled rack a further comprises a coupling system 204. In the embodiment of the present invention, a transverse coupling system 204 is provided between the two truss sheets 100, and a longitudinal coupling system 204 is provided between the upper main beam 101 and the upright post 105 of each truss sheet 100, so as to connect the first pre-assembled rack a more tightly. The second pre-assembled housing a 'also comprises the same coupling system 204 to make the connection of the second pre-assembled housing a' more secure.
Referring to fig. 1 and 2, an embodiment of the present invention further provides a beam erecting method using the assembly type large-tonnage beam erecting crane, which includes the following specific steps:
s1, splicing the first pre-installed rack A and the second pre-installed rack A' respectively;
s2, assembling the middle connecting assembly B on a first pre-installed rack A, and conveying the first pre-installed rack A to a preset position on a bridge floor integrally;
s3, integrally conveying the second pre-installed rack A 'to the bridge floor, and completing the assembly between the first pre-installed rack A and the second pre-installed rack A' through the middle connecting assembly B;
s4, mounting the spreader 401 and associated lifting assembly 402 to the first pre-assembled frame a and the second pre-assembled frame a';
and S5, carrying out lifting operation.
In the embodiment of the invention, firstly, the first pre-installed rack A and the second pre-installed rack A 'are spliced under a bridge, then the middle connecting assembly B is assembled on the first pre-installed rack A, the first pre-installed rack A is integrally conveyed to a preset position on a bridge floor by using a crane, then the crane returns to the position under the bridge to integrally convey the second pre-installed rack A' to the preset position on the bridge floor, the assembly between the first pre-installed rack A and the second pre-installed rack A 'is completed through the middle connecting assembly B, and finally, the lifting appliance 401 and the related lifting assembly 402 are installed on the first pre-installed rack A and the second pre-installed rack A', and the bridge lifting operation can be carried out after the assembly of the girder erection crane is completed. The splicing of the first pre-installed rack A and the splicing of the second pre-installed rack A' are already finished under the bridge, so that the time for assembling the girder erection crane on the bridge floor is shortened, the construction period of operation on the bridge is saved, and the splicing speed of a construction site can be increased. Certainly, the splicing of the first pre-installed rack A and the splicing of the second pre-installed rack A' can also be completed in a factory and then conveyed to a construction bridge, a large number of rod splicing and bolt screwing work is reduced in a construction site, the construction working environment is obviously improved, and the construction quality is improved.
Furthermore, after the hoisting operation is completed, the method further comprises the following steps:
s6, detaching the lifting appliance 401 and the related lifting assembly 402, and removing the middle connecting assembly B;
s7, respectively transporting the first pre-installed rack A and the second pre-installed rack A' away from the bridge floor;
s8, disassembling the first pre-assembled housing a and the second pre-assembled housing a' under the bridge.
In the embodiment of the invention, after the bridge hoisting operation is completed, when the assembled large-tonnage erecting crane provided by the embodiment of the invention is dismantled, the lifting appliance 401 and the related lifting assembly 402 are dismantled, the intermediate connecting assembly B is removed, at the moment, the first pre-installed rack A and the second pre-installed rack A ' are not connected to form a single whole, the first pre-installed rack A and the second pre-installed rack A ' are respectively transported away from a bridge floor by using the crane, and finally, the first pre-installed rack A and the second pre-installed rack A ' are dismantled under the bridge, and the dismantled parts are arranged, classified and stored for the next use. Since the disassembly of the first pre-assembled rack a and the disassembly of the second pre-assembled rack a' are performed under the bridge, the time for disassembling the girder erection crane on the bridge floor is shortened, thereby saving the construction period for performing work on the bridge.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (10)
1. The utility model provides an assembled large-tonnage frame beam loop wheel machine which characterized in that, it includes:
a first pre-assembled housing (A) and a second pre-assembled housing (A'), each comprising:
-two truss sheets (100);
-a front cross member (201), a middle cross member (202), a rear cross member (203) connected between two truss sheets (100);
an intermediate connection assembly (B) connected between the first pre-assembled housing (A) and the second pre-assembled housing (A');
a spreader (401) and a lifting assembly (402) connected to the first pre-assembled frame (A) and the second pre-assembled frame (A').
2. An assembled large tonnage beam crane as set forth in claim 1, wherein each said truss sheet (100) comprises:
an upper main beam (101);
a lower main beam (102);
the upper end of the front support rod (103) is connected to the front end of the upper main beam (101), and the lower end of the front support rod is connected to the front end of the lower main beam (102);
a rear pull rod (104) with an upper end connected to the rear end of the upper main beam (101) and a lower end connected to the rear end of the lower main beam (102);
and the upper end of the upright post (105) is connected with the connection point of the upper main beam (101) and the rear pull rod (104), and the lower end of the upright post is connected with the connection point of the lower main beam (102) and the front support rod (103).
3. An assembled large tonnage beam erecting crane according to claim 2, wherein said front cross beam (201) is connected to the front ends of two of said upper main beams (101).
4. An assembled large tonnage beam hoist as claimed in claim 3, characterized in that said middle cross beam (202) comprises:
the middle-upper cross beam is connected to the rear ends of the two upper main beams (101);
and the middle lower cross beam (222) is connected to the middle parts of the two upright posts (105).
5. An assembled large tonnage beam erecting crane according to claim 4, wherein said rear cross beam (203) is connected to the rear ends of both of said lower main beams (102).
6. An assembled large tonnage frame girder crane according to claim 5, characterized in that the two front braces (103) of the first pre-assembled frame (A) and the second pre-assembled frame (A') are connected by an intermediate connection assembly (B).
7. An assembled large tonnage frame girder crane according to claim 5, characterized in that the two front beams (201) of the first pre-assembled frame (A) and the second pre-assembled frame (A') are connected by an intermediate connection assembly (B).
8. An assembled large tonnage frame girder crane according to claim 1, characterized in that the first pre-assembled frame (a) and the second pre-assembled frame (Α') are bolted to the intermediate connection assembly (B).
9. A method of erecting a beam using the frame beam crane according to any one of claims 1 to 8, comprising the steps of:
splicing the first pre-installed rack A and the second pre-installed rack A' is finished respectively;
assembling the middle connecting assembly B on a first pre-installed rack A, and integrally conveying the first pre-installed rack A to a preset position on a bridge floor;
the second pre-installed rack A 'is integrally conveyed to the bridge floor, and the assembly between the first pre-installed rack A and the second pre-installed rack A' is completed through the middle connecting assembly B;
mounting the spreader 401 and associated lifting assembly 402 to a first pre-assembled frame a and a second pre-assembled frame a';
and carrying out hoisting operation.
10. The method of erecting a beam according to claim 9, wherein after the hoisting operation is completed, further comprising the steps of:
the spreader 401 and associated hoisting assembly 402 are removed and the intermediate connection assembly B is released;
respectively transporting the first pre-installed rack A and the second pre-installed rack A' away from the bridge floor;
the first pre-assembled rack a and the second pre-assembled rack a' are disassembled under the bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010350840.6A CN111532998A (en) | 2020-04-28 | 2020-04-28 | Assembled large-tonnage beam erecting crane and beam erecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010350840.6A CN111532998A (en) | 2020-04-28 | 2020-04-28 | Assembled large-tonnage beam erecting crane and beam erecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111532998A true CN111532998A (en) | 2020-08-14 |
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ID=71975691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010350840.6A Pending CN111532998A (en) | 2020-04-28 | 2020-04-28 | Assembled large-tonnage beam erecting crane and beam erecting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111532998A (en) |
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2020
- 2020-04-28 CN CN202010350840.6A patent/CN111532998A/en active Pending
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