Construction structure for multi-directional installation, lifting and traction of suspender

Abstract

The utility model relates to the field of highway engineering construction, in particular to a lifting traction construction structure for multidirectional installation of a suspender. The traction steel wire rope sequentially penetrates through the fixed pulley block from a suspender cable guide pipe on an arch rib of the arch bridge and is connected with the winch; a to-be-installed suspender is placed on the arch bridge end cross beam; the steel wire rope head is connected with the suspender; the suspender is lifted and dragged into the suspender cable guide pipe of the arch rib of the arch bridge through the winch, and cable hanging at the arch end of the suspender is completed by screwing the upper anchor head nut. The application of the structure has the following advantages: 1, the operation is simple and easy and is not limited by the environment; 2, a large amount of equipment cost is saved; the self weight of the device is light, and the structural stability of the arch bridge and a temporary supporting system in the installation process is guaranteed; flexibility is high, and full-bridge suspender installation can be achieved by adjusting the positions of the guide wheels; 5, the suspender is high in degree of freedom of cable unfolding, the cable can be unfolded in any direction according to the condition of a working surface, and the construction organization is more flexible.

Description

Technical Field

[0001] The utility model relates to the field of highway engineering construction, in particular to a construction method for installing an arch bridge hanger during the construction of a bottom-supported tied arch bridge, and in particular to a multi-directional installation, lifting and traction construction structure for the hanger. Background Art

[0002] During the installation of the suspenders of a bottom-supported tie-arch bridge, a truck crane is usually used to lift the suspenders onto the bridge. This method has the following disadvantages: 1. The truck crane is usually located at the bridge deck. In order to facilitate lifting by the truck crane, the suspender cables can only be extended along the direction of the arch bridge tie beam (the longitudinal direction of the bridge). During the suspender installation process, the arch bridge tie beam working surface will be occupied for a long time; 2. The truck crane is heavy, and the operation on the bridge will affect the final bridge line shape; 3. For arch bridges that adopt the ultra-minimum support method combined with the arch-first and beam-later construction, the working surface of the truck crane cannot be provided because the bridge deck has not been installed or is installed less. Utility Model Content

[0003] The purpose of the utility model is to provide a multi-directional installation, lifting and traction construction structure for a boom, so as to solve the problem that a truck crane cannot be mounted on a bridge to install a boom under a limited working surface of the bridge deck.

[0004] To this end, the utility model proposes a multi-directional installation, lifting and traction construction structure for a hanger, including an arch bridge end beam, a steel wire rope, a fixed pulley group, a winch and a beam end ear plate; the winch is installed at the arch bridge end beam, and the fixed pulley group is arranged on a temporary lifting ear of the arch bridge tie beam or the arch bridge arch rib of the bridge main structure along the installation route, and the traction steel wire rope passes through the fixed pulley group in sequence from the hanger cable guide tube on the arch bridge arch rib and is connected to the winch; the hanger to be installed is placed on the bridge deck of the arch bridge end beam or the arch bridge tie beam; the rope end of the steel wire rope is connected to the hanger; the hanger is lifted and pulled by the winch until it is inserted into the hanger cable guide tube of the arch bridge arch rib, and the hanging cable of the hanger arch end is completed by screwing on the anchor head nut.

[0005] As a preferred technical solution of the present application, the winch is connected to the channel steel fixed base of the arch bridge end beam by bolts.

[0006] As a preferred technical solution of the present application, the channel steel fixed base is welded to the arch bridge end beam.

[0007] As a preferred technical solution of the present application, the fixed pulley assembly consists of fixed pulley one, fixed pulley two, fixed pulley three and fixed pulley four.

[0008] As a preferred technical solution of the present application, the fixed pulley 1 and the fixed pulley 2 are fixed on the temporary lifting lugs of the arch bridge tie beam.

[0009] As a preferred technical solution of the present application, fixed pulley three and fixed pulley four are fixed on temporary lifting ears of the arch ribs of the arch bridge.

[0010] The application of the multi-directional installation lifting and traction construction structure of the boom provided by the utility model has the following advantages: 1. Easy to operate and not restricted by the environment; 2. The equipment is inexpensive, saving a lot of equipment costs; 3. The equipment is light in weight, ensuring the structural stability of the arch bridge and the temporary support system during the installation process; 4. High flexibility, the winch is fixed at the end beam of the bridge deck, and the installation of the entire bridge boom can be achieved by adjusting the position of the guide wheel; 5. The boom has a high degree of freedom in cable extension, and the cable can be extended in any direction according to the conditions of the working surface, making the construction organization more flexible.

[0011] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0013] Figure 1 This is a schematic diagram of the construction process of the multi-directional installation lifting and traction construction structure of the boom of the present invention;

[0014] Explanation of the accompanying symbols: 1. Main structure of the bridge; 2. Cross beam at the end of the arch bridge; 3. Hanger; 4. Wire rope; 5. Fixed pulley 1; 6. Winch; 7. Beam end ear plate; 8. Fixed pulley 2; 9. Fixed pulley 3; 10. Fixed pulley 4; 11. Arch bridge tie beam; 12. Arch bridge arch rib; 13. Cable guide tube. DETAILED DESCRIPTION

[0015] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0016] like Figure 1 As shown, the multi-directional installation lifting and traction construction structure of the boom of the present invention includes: an arch bridge end cross beam 2, a steel wire rope 4, a fixed pulley block, a winch 6 and a beam end ear plate 7.

[0017] Specifically, a winch 6 is installed at the arch bridge end beam 2. The winch 6 is bolted to the channel steel fixed base of the arch bridge end beam 2, and the channel steel fixed base is welded to the arch bridge end beam 2. A fixed pulley assembly consisting of fixed pulley 1 5, fixed pulley 2 8, fixed pulley 3 9, and fixed pulley 4 10 is arranged along the installation route. The fixed pulley assembly is fixed to the temporary lifting lugs of the arch bridge tie beam 11 or the arch bridge arch rib 12 of the main bridge structure. After the guide wheel is installed, the traction wire rope 4 passes through the fixed pulley assembly in sequence from the hanger cable guide 13 of the arch bridge arch rib 12 and is connected to the winch 6.

[0018] The suspender 3 to be installed is transported onto the bridge and, depending on the working surface, placed on the deck of the arch bridge end crossbeam 2 or the arch bridge tie beam 11. A traction head is installed on the suspender 3 to be installed, and the end of the lifting and traction wire rope 4 is connected to the suspender 3. The hoist 6 is started to lift and pull the suspender 3 until it is placed inside the anchor box inside the arch rib 12 of the arch bridge. During the lifting process, the suspender cable body is unfolded, and the outer packaging of the suspender cable body is gradually removed during the unfolding process. The suspender 3 is pulled into the suspender cable guide 13 of the arch bridge arch rib 12 until the anchor head is exposed from the anchor pad. The anchor head nut is immediately screwed on, and the exposed anchor cup is adjusted to meet the design and tensioning construction requirements. At this point, the suspender arch end cable is hung.

[0019] After the arch end cables are installed, install the beam end fork ears, using a hand chain hoist and manual assistance. Use the hand chain hoist to pull the boom beam end fork ear anchor to align with the beam end ear plate 7 and anchor. After aligning the fork ear center hole with the ear plate center hole, install the pin and install the pin anti-loosening device to complete the beam end cable body.

[0020] The working principle and working process of the multi-directional installation lifting and traction construction structure of the boom of the present invention are briefly described below.

[0021] Remove the anchor nut at the arch end of the boom and place it at the anchor pad of the corresponding arch end anchor box; arrange a 3t lifting winch 6 at the cross beam 2 at the end of the arch bridge, use the fixed pulley to guide the lifting wire rope through the arch inner cable anchor pad and the boom anchor nut until the bridge deck is in place; transport the boom 3 to the bridge deck, use the winch 6 to pull the boom cable until the corresponding cable guide 13 is in place; connect the rope head of the arch inner lifting wire rope 4 to the boom cable body; start the winch 6, lift and pull the boom 3 until it is in the anchor box in the arch, unfold the boom cable body during the lifting process, and gradually remove the outer packaging of the boom cable during the unfolding process; pull the boom 3 into the cable guide 13 until the anchor head is exposed to the anchor pad, immediately screw on the anchor head nut, adjust the exposure of the anchor cup to meet the design and tensioning construction requirements, and now the boom arch end cable is completed. After the arch end cable is installed, install the beam end fork ear, and use a hand hoist and manual assistance to install it. Use a hand hoist to pull the fork ear anchor at the end of the boom beam to connect with the ear plate at the beam end and anchor it; after the center hole of the fork ear is aligned with the center hole of the ear plate, install the pin shaft and the pin shaft anti-loosening device to complete the fixation of the beam end cable body.

[0022] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A multi-directional installation lifting and traction construction structure for a boom, characterized in that: include: Arch bridge end cross beam (2), wire rope (4), fixed pulley block, hoist (6) and beam end lug (7); A winch (6) is installed at the cross beam (2) at the end of the arch bridge, and the fixed pulley group is arranged on a temporary lifting lug of the arch bridge tie beam (11) or the arch bridge arch rib (12) of the bridge main structure along the installation route. The traction wire rope (4) passes through the fixed pulley group in sequence from the hanger cable guide (13) on the arch bridge arch rib (12) and is connected to the winch (6); The hanger (3) to be installed is placed on the bridge deck of the arch bridge end cross beam (2) or on the arch bridge tie beam (11); the rope end of the steel wire rope (4) is connected to the hanger (3); the hanger (3) is lifted and pulled into the hanger cable guide (13) of the arch bridge arch rib (12) by the hoist (6), and the hanger arch end cable is completed by screwing on the anchor head nut.

2. The multi-directional installation lifting and traction construction structure of the boom according to claim 1 is characterized in that: The hoist (6) is connected to the channel steel fixed base of the arch bridge end beam (2) via bolts.

3. The multi-directional installation lifting and traction construction structure of the boom according to claim 2 is characterized in that: The channel steel fixed base is welded to the arch bridge end crossbeam (2).

4. The multi-directional installation lifting and traction construction structure of the boom according to claim 1 is characterized in that: The fixed pulley assembly consists of fixed pulley 1 (5), fixed pulley 2 (8), fixed pulley 3 (9) and fixed pulley 4 (10).

5. The multi-directional installation lifting and traction construction structure of the boom according to claim 4 is characterized in that: The fixed pulley 1 (5) and the fixed pulley 2 (8) are fixed on the temporary lifting lugs of the arch bridge tie beam (11).

6. The multi-directional installation lifting and traction construction structure of the boom according to claim 4 is characterized in that: Fixed pulley three (9) and fixed pulley four (10) are fixed on temporary lifting ears of the arch rib (12) of the arch bridge.

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