A luffing crane for installing a single-sided arch rib of a steel pipe arch bridge

Abstract

This invention discloses a luffing crane for installing a single-sided arch rib of a steel pipe arch bridge. The luffing crane includes: a chassis, a boom, a hoisting assembly, a luffing assembly, a longitudinal lifting assembly, a transverse lifting assembly, a traveling system, and an anchoring assembly. The bottom of the boom is hinged to a connecting lug plate at the front of the chassis via a pin. The longitudinal lifting assembly is mounted on the upper part of the boom. The hoisting assembly and the luffing assembly are both bolted to the rear side of the connecting lug plate at the front of the chassis. The traveling system is located at the lower part of the chassis, and the anchoring assembly is mounted at the rear of the chassis. This invention solves the problems of heavy structural weight, large working space, or the need for full-bridge track installation in previous hoisting cranes. The overall structure is simple and compact, with the advantages of convenient disassembly and maintenance, while reducing maintenance costs and improving efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of luffing crane, and particularly relates to a luffing crane for single-side arch rib installation of steel pipe arch bridge. BACKGROUND

[0002] At present, there are many applications of cranes for hoisting arch rib segments of steel pipe arch bridge, but the previous cranes for hoisting arch ribs of steel arch bridge, such as full-rotation cranes, need to set running assemblies on both sides of the steel pipe arch, and the lower chassis needs to be designed according to the distance between the centers of the arch ribs on both sides, so the overall weight is large and the structure stress of the arch bridge is greatly affected; there are also large-tonnage cable cranes for hoisting, and the cable cranes have high cost; and the portal crane installation needs to lay tracks on the whole bridge, so the overall use cost is high.

[0003] Therefore, there is an urgent need for a crane for erecting arch ribs of steel pipe arch bridge, which has light structure weight, small space requirement and does not need to lay tracks on the whole bridge. SUMMARY

[0004] In order to overcome the deficiencies of the related products in the prior art, the present application provides a luffing crane for single-side arch rib installation of steel pipe arch bridge.

[0005] The present application provides a luffing crane for single-side arch rib installation of steel pipe arch bridge, which comprises a chassis, a hoisting arm, a hoisting assembly, a luffing assembly, a hoisting longitudinal moving assembly, a hoisting transverse moving assembly, a running system and an anchoring assembly; the bottom of the hoisting arm is hingedly connected to a connecting lug plate at the front of the chassis through a pin shaft, the hoisting longitudinal moving assembly is installed on the upper part of the hoisting arm, one end of the hoisting longitudinal moving assembly is fixedly connected to the hoisting arm through a bolt, and the other end is fixedly connected to the hoisting transverse moving assembly through a bolt; the hoisting transverse moving assembly is arranged at the front end of the hoisting arm; the hoisting assembly and the luffing assembly are both installed on the rear side of the connecting lug plate at the front of the chassis through bolts, wherein the hoisting assembly is in transmission connection with the hoisting transverse moving assembly through a steel wire rope, and the luffing assembly is in transmission connection with the luffing pulley set on the hoisting arm through a steel wire rope; the running system is arranged at the lower part of the chassis, and the anchoring assembly is installed at the rear of the chassis.

[0006] In some embodiments of the present application, the hoisting transverse moving assembly comprises a cantilever longitudinal moving support, which is arranged on the hoisting arm and is bolted to the hoisting longitudinal moving assembly.

[0007] In some embodiments of the present application, the hoisting transverse moving assembly further comprises a fixed pulley set and a hoisting hook, the fixed pulley set is arranged on the cross beam of the cantilever longitudinal moving support, a steel wire rope is wound around the fixed pulley set, and the hoisting hook is in transmission connection with the hoisting assembly through the steel wire rope.

[0008] In some embodiments of the present application, the hoisting and traversing assembly further comprises a traversing sprocket assembly, which is installed at both ends of the beam of the cantilever longitudinal moving support and connected with the fixed pulley set through a chain.

[0009] In some embodiments of the present application, the running system comprises an adjustable track beam, an adjusting assembly and a running cylinder assembly; the adjustable track beam comprises multiple groups of tracks coaxially arranged and connected in front and back; the adjusting assembly for adjusting position is arranged between two adjacent groups of tracks; one end of the running cylinder assembly is connected with the chassis through a pin.

[0010] In some embodiments of the present application, the end of the track beam is further provided with a self-locking assembly, and the side of the steel arch beam to be hoisted corresponding to the position of the self-locking assembly is further provided with a protruding embedded part; the other end of the running cylinder assembly can be limited and locked on the track beam through the self-locking assembly.

[0011] Compared with the prior art, the present application has the following advantages:

[0012] The variable-amplitude crane for single-side arch rib installation of a steel pipe arch bridge according to the embodiments of the present application solves the problems of heavy structure weight, large working space range or the need of full-bridge track paving of the previous hoisting crane, has a simple and compact overall structure, has the advantages of convenient disassembly and maintenance, reduces the maintenance cost and improves the use efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0014] Figure 1 FIG. 1 is a structural schematic view of the variable-amplitude crane for single-side arch rib installation of a steel pipe arch bridge according to the present application;

[0015] Figure 2 FIG. 2 is a structural schematic view of the A-A direction of the variable-amplitude crane for single-side arch rib installation of a steel pipe arch bridge according to the present application; Figure 1

[0016] Figure 3 FIG. 4 is a structural schematic view of the B-B direction of the variable-amplitude crane for single-side arch rib installation of a steel pipe arch bridge according to the present application; Figure 1

[0017] Figure 4 FIG. 6 is a structural schematic view of the hoisting and traversing assembly according to the present application;

[0018] Figure 5 FIG. 7 is a structural schematic view of the running system according to the present application.

[0019] KEY​​

[0020] 0, steel arch beam; 1, embedded part; 2, chassis; 3, jib; 4, hoisting assembly; 5, luffing assembly; 6, hoisting longitudinal moving assembly; 7, hoisting transverse moving assembly; 8, running system; 9, anchoring assembly; 7a, cantilever longitudinal moving support; 7b, fixed pulley block; 7c, transverse moving sprocket assembly; 7d, hoisting hook; 8a, adjustable track beam; 8b, adjusting assembly; 8c, self-locking assembly; 8d, running oil cylinder assembly. DETAILED DESCRIPTION

[0021] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The preferred embodiments of the present application are given in the drawings. The present application can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0022] Referring to Figures 1-3 As shown in the drawings, the luffing crane for single-side arch rib installation of a steel pipe arch bridge comprises a chassis 2, a jib 3, a hoisting assembly 4, a luffing assembly 5, a hoisting longitudinal moving assembly 6, a hoisting transverse moving assembly 7, a running system 8 and an anchoring assembly 9. The bottom of the jib 3 is hingedly connected to a connecting lug plate at the front of the chassis 2 by a pin shaft. The hoisting longitudinal moving assembly 6 is installed on the upper part of the jib 3. One end of the hoisting longitudinal moving assembly 6 is fixedly connected to the jib 3 by a bolt, and the other end is fixedly connected to the hoisting transverse moving assembly 7 by a bolt. The hoisting transverse moving assembly 7 is arranged at the front end of the jib 3. The hoisting assembly 4 and the luffing assembly 5 are both installed on the rear side of the connecting lug plate at the front of the chassis 2 by bolts. The hoisting assembly 4 is drivingly connected to the hoisting transverse moving assembly 7 by a steel wire rope. The luffing assembly 5 is drivingly connected to the luffing pulley block on the jib 3 by a steel wire rope. The running system 8 is arranged at the lower part of the chassis 2. The anchoring assembly 9 is installed at the rear of the chassis 2 to provide a supporting and fixing effect.

[0023] In combination Figure 4 As shown in the drawings, the hoisting transverse moving assembly 7 comprises a cantilever longitudinal moving support 7a, a fixed pulley block 7b, a transverse moving sprocket assembly 7c and a hoisting hook 7d. The cantilever longitudinal moving support 7a is arranged on the jib 3 and is bolted to the hoisting longitudinal moving assembly 6. The fixed pulley block 7b is arranged on the crossbeam of the cantilever longitudinal moving support 7a. A steel wire rope is wound around the fixed pulley block 7b. The hoisting hook 7d is drivingly connected to the hoisting assembly 4 by the steel wire rope. The transverse moving sprocket assembly 7c is installed at both ends of the crossbeam of the cantilever longitudinal moving support 7a and is connected to the fixed pulley block 7b by a chain.

[0024] Combination Figure 5 As shown in the figure, the walking system 8 comprises an adjustable track beam 8a, an adjusting assembly 8b, a self-locking assembly 8c and a walking oil cylinder assembly 8d; the adjustable track beam 8a comprises multiple groups of tracks coaxially arranged and connected in front and back; the adjusting assembly 8b for adjusting position is arranged between two adjacent tracks; one end of the walking oil cylinder assembly 8d is connected with the chassis 2 through a pin shaft; the track beam end is further provided with the self-locking assembly 8c, and the side corresponding to the position of the self-locking assembly 8c on the steel arch beam 0 to be hoisted is further provided with a protruding embedded part 1; the other end of the walking oil cylinder assembly 8d can be limited and locked on the track beam through the self-locking assembly 8c.

[0025] The working principle of the variable-amplitude crane for single-side arch rib installation of a steel pipe arch bridge according to the embodiment is specifically as follows:

[0026] In work, first, the adjustable track beam 8a is moved to position, the self-locking assembly 8c on the adjustable track beam 8a is locked with the embedded part 1 on the steel arch beam 0, the steel arch beam 0 is moved to the hoisting position through the walking oil cylinder assembly 8d, the hoisting angle of the hoisting arm 3 is adjusted through the transmission action of the steel wire rope by the variable-amplitude assembly 5; then the hoisting and longitudinal movement assembly 6 moves the hoisting and transverse movement assembly 7 to the hoisting position; the transverse movement chain wheel assembly 7c on the hoisting and transverse movement assembly 7 moves the fixed pulley set 7b to the side of the installed steel arch beam 0, then the lifting hook 7d is lowered to the steel arch beam 0, and is connected with the steel arch beam 0 through the hoisting lock; the steel wire rope is retracted by the lifting assembly 4, the steel arch beam 0 is hoisted to the installation height, then the transverse movement chain wheel assembly 7c moves the fixed pulley set 7b, so that the steel arch beam 0 is transversely moved to the installation position, and finally the longitudinal movement oil cylinder on the hoisting and longitudinal movement assembly 6 moves the steel arch beam 0 longitudinally to position.

[0027] Before the variable-amplitude crane moves, the adjustable track beam 8a on the walking system 8 is adjusted to position through the adjusting assembly 8b between two adjacent tracks according to the camber of the steel arch beam 0, so that the adjustable track beam 8a can be accurately locked on the corresponding embedded part 1 after the adjustable track beam 8a moves to the next section.

[0028] The variable-amplitude crane for single-side arch rib installation of a steel pipe arch bridge according to the embodiment solves the problems of heavy structure weight, large working space range or the need of full-bridge track paving of the previous hoisting crane, has the advantages of simple and compact overall structure, convenient disassembly and maintenance, reduces the maintenance cost and improves the use efficiency.

[0029] The content not described in the specification is the prior art known to those skilled in the art. The above is only an embodiment of the present application, but does not limit the patent scope of the present application, although the present application is described in detail with reference to the foregoing embodiments, and for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or part of the technical features can be replaced equivalently. Any equivalent structure using the content of the specification and the drawings, directly or indirectly used in other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A luffing crane for single-side arch rib installation of a steel tube arch bridge, characterized by, It includes chassis (2), boom (3), hoisting assembly (4), luffing assembly (5), hoisting longitudinal moving assembly (6), hoisting transverse moving assembly (7), running system (8) and anchoring assembly (9); the bottom of the boom (3) is hingedly connected to the connecting lug plate at the front of the chassis (2) through a pin shaft, the hoisting longitudinal moving assembly (6) is installed on the upper part of the boom (3), one end of the hoisting longitudinal moving assembly (6) is fixedly connected with the boom (3) through a bolt, and the other end is fixedly connected with the hoisting transverse moving assembly (7) through a bolt; the hoisting transverse moving assembly (7) is arranged at the front end of the boom (3); the hoisting assembly (4) and the luffing assembly (5) are both installed on the rear side of the connecting lug plate at the front of the chassis (2) through bolts, wherein the hoisting assembly (4) is drivingly connected with the hoisting transverse moving assembly (7) through a steel wire rope, and the luffing assembly (5) is drivingly connected with the luffing pulley block on the boom (3) through a steel wire rope; the running system (8) is arranged on the lower part of the chassis (2), and the anchoring assembly (9) is installed on the rear part of the chassis (2). The hoisting transverse moving assembly (7) comprises a cantilever longitudinal moving support (7a) arranged on the boom (3) and bolt-connected with the hoisting longitudinal moving assembly (6).

2. The variable amplitude crane for single side arch rib installation of steel tube arch bridge according to claim 1, characterized in that: The hoisting transverse moving assembly (7) further comprises a fixed pulley block (7b) arranged on the crossbeam of the cantilever longitudinal moving support (7a), a steel wire rope wound around the fixed pulley block (7b), and a hoisting hook (7d) drivingly connected with the hoisting assembly (4) through the steel wire rope.

3. The variable amplitude crane for single side arch rib installation of steel tube arch bridge according to claim 2, characterized in that: The hoisting transverse moving assembly (7) further comprises a transverse moving sprocket assembly (7c) installed at both ends of the crossbeam of the cantilever longitudinal moving support (7a) and connected with the fixed pulley block (7b) through a chain.

4. The variable amplitude crane for single side arch rib installation of steel tube arch bridge according to claim 3, characterized in that: The running system (8) comprises an adjustable track beam (8a), an adjusting assembly (8b) and a running oil cylinder assembly (8d); the adjustable track beam (8a) comprises multiple groups of tracks coaxially arranged and connected in front and back; the adjusting assembly (8b) for adjusting the position is arranged between adjacent two groups of tracks; one end of the running oil cylinder assembly (8d) is connected with the chassis (2) through a pin shaft.

5. The variable amplitude crane for single side arch rib installation of steel tube arch bridge according to claim 2, characterized in that: The track beam end is further provided with a self-locking assembly (8c), and the side corresponding to the position of the self-locking assembly (8c) on the steel arch beam (0) to be hoisted is further provided with a protruding embedded part (1).

6. The variable amplitude crane for single side arch rib installation of a steel tube arch bridge according to claim 5, characterized in that: ​

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