CN114481863A - Wave form steel web bridge cantilever construction auxiliary assembly - Google Patents

Abstract

The invention relates to the technical field of bridge construction, in particular to a corrugated steel web bridge cantilever construction auxiliary equipment, comprising a fixing piece, a connecting piece, a supporting piece and a placing piece. A supporting piece is installed symmetrically on the left and right, and a placing piece is inserted into the lower end of the supporting piece. The invention can solve the problem that the existing hoisting device is prone to unstable installation when hoisting the corrugated steel plate to the installation place, and the hoisting device is prone to failure after long-term use, thereby increasing the risk of the corrugated steel plate installation. The connecting piece used in the corrugated steel web bridge cantilever construction auxiliary equipment provided by the present invention can be adjusted in length according to the height of the corrugated steel web, and the steel cable can be tensioned and limited to the corrugated steel web, thereby improving the performance of the corrugated steel web. The stability of corrugated steel web construction and installation reduces the risk of corrugated steel web installation.

Description

A kind of corrugated steel web bridge cantilever construction auxiliary equipment

technical field

The invention relates to the technical field of bridge construction, in particular to a corrugated steel web bridge cantilever construction auxiliary equipment.

Background technique

Corrugated steel web bridge refers to a box girder in which the concrete web of the prestressed concrete box girder is replaced by corrugated steel plate. economic indicators, etc.

There are two installation methods for the corrugated steel plate of the corrugated steel web bridge, namely vertical installation and inclined installation. The installation place, lower the corrugated steel plate to the supporting equipment, and continue to suspend the corrugated steel plate. This method is simple to operate, but the installation of the corrugated steel plate is prone to unstable installation when using this method, and the hoisting The device is prone to failure when used for a long time, thus increasing the risk of corrugated steel plate installation.

In the existing method, the inclined angle of the support device used in the inclined installation of the corrugated steel plate is fixed. This kind of support device can only adapt to the construction of the same type of bridge, and the support device cannot change the angle, thereby reducing the support device. flexibility of use.

SUMMARY OF THE INVENTION

Technical problem to be solved: The present invention provides a corrugated steel web bridge cantilever construction auxiliary equipment, which can solve the problems existing in the cantilever construction of the corrugated steel web bridge mentioned above.

Technical scheme: In order to achieve the above purpose, the present invention adopts the following technical scheme, a corrugated steel web bridge cantilever construction auxiliary equipment, including a fixing piece, a connecting piece, a supporting piece and a placing piece, and a connecting piece is inserted on the fixing piece The two ends of the connecting piece are symmetrically installed with supporting pieces, the lower end of the supporting piece is inserted with a placing piece, and the structure of the placing piece is consistent with that of the supporting piece.

The support member includes a rectangular plate installed at the end of the connecting member, two support plates are symmetrically installed at the upper end of the rectangular plate, and a support shaft is jointly installed between the support plates, and a limit plate is installed at the upper end of the rectangular plate near the connecting member. A rotating block is rotatably connected to the support shaft, and a clamping mechanism is symmetrically arranged on the upper end of the rotating block. Connection, the two clamping mechanisms are connected by a plurality of locking screw threads, a sliding through hole is opened on the rectangular plate away from the limit plate, the inside of the sliding through hole is slidably connected to the limit arc plate, and the limit arc plate is provided with A plurality of evenly distributed snap-through holes, cylindrical rods are slidably connected in the snap-through holes, and a plurality of circumferentially evenly distributed support columns are installed at the lower end of the rectangular plate.

The clamping mechanism includes an L-shaped plate connected to the upper end of the rotating block, a cavity is opened on the horizontal section of the L-shaped plate, a lifting plate is slidably penetrated through the upper wall of the cavity, a contact plate is installed at the upper end of the lifting plate, and a lower end of the contact plate is installed. A reset spring is installed symmetrically between the horizontal section of the L-shaped plate, a guide groove is arranged at the upper end of the contact plate, a plurality of evenly distributed guide columns are installed on the wall of the guide groove, and a clamping plate is slidably connected to the plurality of guide columns. A trapezoidal block is installed on the end face of the clamping plate close to the vertical section of the L-shaped plate, and a fitting plate is inserted into the end face of the clamping plate away from the vertical section of the L-shaped plate. on the vertical section of the template.

As a preferred technical solution of the present invention, the fixing member includes a fixing plate, a limit ring is installed at the four corners of the upper end of the fixing plate, the limit ring is provided with a clamping opening, and two adjacent clamping openings A supporting strip is clamped at the place, and a clamping strip is placed between the two supporting strips.

As a preferred technical solution of the present invention, the connector includes a positioning column inserted into the limiting ring, a connecting plate is installed on the upper ends of the plurality of positioning columns, and the two ends of the connecting plate are respectively connected with the two The rectangular plate is fixedly connected, two U-shaped frames with upward openings are symmetrically installed at the upper end of the connecting plate, a cylindrical shaft is rotatably connected between the side walls of the U-shaped frame, and a rotating sleeve is rotatably connected in the middle of the outer surface of the cylindrical shaft, and a rotating sleeve is installed on the rotating sleeve. A multi-section telescopic rod, the end of the multi-section telescopic rod away from the rotating sleeve is installed with a connecting strip, the outer surface of the cylindrical shaft is symmetrically installed with a winding roller, the winding roller is wrapped with a wire rope, and the wire rope is far from the end of the winding roller. A hook is installed, the hook is fixedly connected with the end of the connecting bar, and a clamping mechanism is symmetrically connected at the front and rear ends of the cylindrical shaft.

As a preferred technical solution of the present invention, the clamping mechanism includes a connecting telescopic rod installed at the end of the cylindrical shaft, and a disc is installed at one end of the connecting telescopic rod away from the cylindrical shaft, and the disk is close to the end face of the U-shaped frame A plurality of clamping posts evenly distributed in the circumferential direction are installed on the upper part, the clamping posts are clamped and matched with the side walls of the U-shaped frame, and a handle is installed on the end face of the disc away from the U-shaped frame.

As a preferred technical solution of the present invention, the pushing block has a trapezoidal structure, and the inclined surface on the pushing block is slidingly matched with the slope surface on the trapezoidal block.

As a preferred technical solution of the present invention, a plurality of sliding balls are rotatably connected to the upper end of the support bar.

As a preferred technical solution of the present invention, the support column is in a stepped cylindrical structure, and the support column is inserted and matched with the placing member.

As a preferred technical solution of the present invention, the positioning column has a stepped cylindrical structure, and the lower end of the positioning column is inserted and matched with the limit ring.

Beneficial effects: 1. The supporting member adopted by the corrugated steel web bridge cantilever construction auxiliary equipment provided by the present invention can be adjusted correspondingly according to the installation angle of the corrugated steel web, thereby increasing the flexibility of equipment use, increasing the the use of the equipment.

2. The support used by the corrugated steel web bridge cantilever construction auxiliary equipment provided by the present invention can be clamped and supported when the corrugated steel web is constructed, and the support can be disassembled after the corrugated steel web is welded. separate to facilitate removal of the support.

3. The connector used by the corrugated steel web bridge cantilever construction auxiliary equipment provided by the present invention can be adjusted in length according to the height of the corrugated steel web, and the steel cable can be tightened and limited to the corrugated steel web, thereby The stability of the construction and installation of the corrugated steel web is improved, and the danger of the installation of the corrugated steel web is reduced.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

FIG. 1 is a schematic three-dimensional structure diagram of the present invention from a first perspective.

FIG. 2 is a schematic three-dimensional structure diagram of the present invention from a second viewing angle.

Fig. 3 is a front view of the present invention.

Figure 4 is a left side view of the present invention.

FIG. 5 is a cross-sectional view along A-A of FIG. 4 of the present invention.

FIG. 6 is a schematic view of the structure of the support member of the present invention.

Fig. 7 is the enlarged view of G in Fig. 6 of the present invention

Figure 8 is a cross-sectional view of the U-shaped frame, the cylindrical shaft and the clamping mechanism of the present invention.

9 is a schematic structural diagram of the U-shaped frame, the rotating sleeve, the multi-section telescopic rod, the winding roller, the wire rope, the hook and the clamping mechanism of the present invention.

In the figure: 1. Fixing piece; 11. Fixing plate; 12. Limiting ring; 13. Supporting strip; 14. Clamping strip; 2. Connecting piece; 21. Connecting plate; 22. Positioning column; 23. U-shaped frame ;24, cylindrical shaft; 25, rotating sleeve; 26, multi-section telescopic rod; 27, winding roller; 28, steel cable; 29, hook; 20, clamping mechanism; 201, connecting telescopic rod; 202, disc; 203, clamping column; 204, handle; 3, supporting piece; 31, rectangular plate; 32, supporting plate; 33, supporting shaft; 34, limit plate; 35, rotating block; 36, clamping mechanism; 361, L 362, lift plate; 363, contact plate; 364, return spring; 365, guide column; 366, clamping plate; 367, trapezoidal block; 368, fit plate; 369, push block; 37, limit arc plate; 38, cylindrical rod; 39, support column; 4, placement piece.

Detailed ways

The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

Referring to Figures 1 to 4, a corrugated steel web bridge cantilever construction auxiliary equipment includes a fixing piece 1, a connecting piece 2, a supporting piece 3 and a placing piece 4. The fixing piece 1 is plugged with a connecting piece 2, which connects Two ends of the component 2 are symmetrically installed with a supporting component 3 , and a placing component 4 is inserted into the lower end of the supporting component 3 .

Referring to FIG. 5 , the fixing member 1 includes a fixing plate 11 . Limiting rings 12 are installed at the four corners of the upper end of the fixing plate 11 . The limiting ring 12 is provided with clamping openings, and two adjacent clamping openings are A support bar 13 is clamped, the upper end of the support bar 13 is rotatably connected with a plurality of sliding balls, and a clamping bar 14 is placed between the two support bars 13. During specific work, the fixing plate 11 and the placing member 4 are fixed manually. On the bottom mold of the bridge, the two support bars 13 are then manually inserted into the corresponding clamping openings of the limiting ring 12, and the clamping bar 14 is placed between the two supporting bars 13 and the two clamping bars 14 To limit the position, the sliding ball on the support bar 13 facilitates the sliding of the support bar 13 .

Referring to FIGS. 5 and 9 , the connector 2 includes a positioning column 22 that is inserted into the limit ring 12 , the positioning column 22 has a stepped cylindrical structure, and the lower end of the positioning column 22 is inserted and matched with the limit ring 12 , A connecting plate 21 is installed on the upper ends of the plurality of the positioning columns 22. The two ends of the connecting plate 21 are respectively fixedly connected with the two rectangular plates 31. The upper end of the connecting plate 21 is symmetrically installed with two U-shaped frames 23 with upward openings. A cylindrical shaft 24 is rotatably connected between the side walls of the frame 23, and a rotating sleeve 25 is rotatably connected to the middle of the outer surface of the cylindrical shaft 24. The rotating sleeve 25 is mounted with a multi-section telescopic rod 26, and the multi-section telescopic rod 26 is away from the end of the rotating sleeve 25. A connecting strip is installed on the outer surface of the cylindrical shaft 24, a winding roller 27 is symmetrically installed on the outer surface of the cylindrical shaft 24, a wire rope 28 is wound on the winding roller 27, and a hook 29 is installed at the end of the wire rope 28 away from the winding roller 27. The ends of the connecting bars are fixedly connected, and the front and rear ends of the cylindrical shaft 24 are symmetrically connected with the locking mechanism 20. During specific work, a plurality of positioning columns 22 are manually inserted into the corresponding limit rings 12 and placed on the support bars 13, and then After the corrugated steel web is clamped between the two fitting plates 368, the multi-section telescopic rod 26 is pushed by the existing machine, and the multi-section telescopic rod 26 drives the two hooks 29 to move above the corrugated steel web, and the hook 29 drives the The wire rope 28 rotates on the winding roller 27, the two hooks 29 clamp and tighten the corrugated steel web, and the clamping mechanism 20 limits the position of the cylindrical shaft 24 to prevent the wire rope 28 from shaking. After the welding is completed, the existing machine continues to push the multi-section telescopic rod 26, the multi-section telescopic rod 26 drives the hook 29 to move out from the corrugated steel web, and contracts the multi-section telescopic rod 26, thereby facilitating the disassembly of the connector 2.

Referring to FIG. 8 , the locking mechanism 20 includes a connecting telescopic rod 201 installed at the end of the cylindrical shaft 24 , and a disk 202 is installed at one end of the connecting telescopic rod 201 away from the cylindrical shaft 24 , and the disk 202 is close to the U-shaped frame 23 The end face of the disc 202 is installed with a plurality of circumferentially evenly distributed clamping posts 203, the clamping posts 203 are snap-fitted with the side walls of the U-shaped frame 23, and a handle 204 is installed on the end face of the disc 202 away from the U-shaped frame 23. The specific work When the hook 29 clamps and tightens the corrugated steel web, the disk 202 is manually pushed, and the disk 202 drives the clamping post 203 to engage with the side wall of the U-shaped frame 23, thereby limiting the position of the cylindrical shaft 24. , after the hook 29 is removed from the corrugated steel web, the disc 202 is manually pulled out, and the handle 204 is turned. The cable 28 is rolled up.

Referring to FIGS. 5 and 6 , the support member 3 includes a rectangular plate 31 installed at the end of the connecting member 2 , two support plates 32 are installed symmetrically on the upper end of the rectangular plate 31 , and a support plate 32 is installed between the support plates 32 . The shaft 33, the upper end of the rectangular plate 31 is installed with a limit plate 34 near the connecting piece 2, the support shaft 33 is rotatably connected with a rotating block 35, and the upper end of the rotating block 35 is symmetrically provided with a clamping mechanism 36, which is close to the clamping plate 34. The mechanism 36 is fixedly connected with the upper end of the rotating block 35 , the clamping mechanism 36 at the position far from the limit plate 34 is slidably connected with the upper end of the rotating block 35 , and the two clamping mechanisms 36 are threadedly connected by a plurality of locking screws. A sliding through hole is opened away from the limit plate 34, and the limit arc plate 37 is slidably connected to the inside of the sliding through hole. The cylindrical rod 38 and the lower end of the rectangular plate 31 are installed with a plurality of supporting columns 39 evenly distributed in the circumferential direction. The supporting columns 39 have a stepped cylindrical structure. Manually insert a plurality of support columns 39 into the placement member 4, manually slide the limit arc plate 37 according to the actual installation angle of the corrugated steel web, and then insert the cylindrical rod 38 into the clip on the corresponding limit arc plate 37 to connect. In the hole, push the rotating block 35, the rotating block 35 drives the two clamping mechanisms 36 to rotate to the end of the limit arc plate 37, and the corrugated steel web is hoisted to the top of the clamping mechanism 36 by the existing hoisting equipment, and the hoisting equipment is installed again. Slowly drop the corrugated steel web between the two clamping mechanisms 36, and the clamping mechanism 36 clamps the corrugated steel web to a limit.

Referring to FIGS. 5-7 , the clamping mechanism 36 includes an L-shaped plate 361 connected to the upper end of the rotating block 35 , a cavity is formed on the horizontal section of the L-shaped plate 361 , and a lift plate 362 slides through the upper wall of the cavity. , a contact plate 363 is installed on the upper end of the lifting plate 362, a return spring 364 is symmetrically installed between the lower end of the contact plate 363 and the horizontal section of the L-shaped plate 361, and a guide groove is provided on the upper end of the contact plate 363. Distributed guide columns 365, a plurality of guide columns 365 are jointly slidably connected with a clamping plate 366, a trapezoidal block 367 is installed on the end face of the clamping plate 366 close to the vertical section of the L-shaped plate 361, and the clamping plate 366 is far away from the L-shaped plate 361 A fitting plate 368 is inserted into the end face of the vertical section, and a push block 369 is arranged below the trapezoidal block 367. The push block 369 is installed on the vertical section of the L-shaped plate 361. The push block 369 has a trapezoidal structure, and the push block 369 The upper slope is slidingly matched with the slope on the trapezoidal block 367. During the specific operation, before the corrugated steel web falls, the rotating block 35 drives the two L-shaped plates 361 to rotate to the end of the limit arc plate 37, and then the hoisting equipment will The corrugated steel web slowly falls between the two fitting plates 368. After the corrugated steel web comes into contact with the two contact plates 363, it drives the contact plate 363 to descend. The contact plate 363 drives the trapezoidal block on the clamping plate 366 through the guide column 365. 367 moves downward, the slope on the trapezoidal block 367 cooperates with the slope on the pushing block 369 to drive the clamping plate 366 to move towards the corrugated steel web, and the two clamping plates 366 drive the fitting plate 368 to the corrugated steel web. Move and clamp and limit the corrugated steel web, so as to realize the function of supporting the corrugated steel web. After the corrugated steel web is welded, the locking screw is removed from the two L-shaped plates 361 by the existing machinery. Take out the L-shaped plate 361 close to the limiting arc plate 37 from the rotating block 35 , so as to facilitate the disassembly of the clamping mechanism 36 .

In use: S1: Manually install the fixing plate 11 and the placing piece 4 on the bottom mold of the bridge, then manually insert the two support bars 13 into the corresponding clamping openings of the limit ring 12, and then insert the clamping strips 14 is placed between the two support bars 13 and limits the two clamping bars 14 .

S2: Manually insert the positioning column 22 into the limit ring 12, and then insert a plurality of support columns 39 into the placement member 4, according to the actual installation angle of the corrugated steel web, manually slide the limit arc plate 37, and then insert the cylindrical rod 38 Insert into the clamping hole on the corresponding limit arc plate 37 , push the rotating block 35 , and the rotating block 35 drives the two clamping mechanisms 36 to rotate to the end of the limit arc plate 37 .

S3: The hoisting equipment slowly drops the corrugated steel web between the two fitting plates 368. After the corrugated steel web is in contact with the two contact plates 363, it drives the contact plate 363 to descend, and the contact plate 363 drives the clamping plate through the guide column 365. The trapezoidal block 367 on the 366 moves downward, the slope on the trapezoidal block 367 cooperates with the slope on the pushing block 369 to drive the clamping plate 366 to move in the direction of the corrugated steel web, and the two clamping plates 366 drive the fitting plate 368 to move toward the corrugated steel web. The corrugated steel web is moved in the direction and the corrugated steel web is clamped and limited. The multi-section telescopic rod 26 is pushed by the existing machinery, and the multi-section telescopic rod 26 drives the two hooks 29 to move to the top of the corrugated steel web. The hook 29 The steel cable 28 is driven to rotate on the winding roller 27 , the two hooks 29 clamp and tighten the corrugated steel web, and the clamping mechanism 20 limits the position of the cylindrical shaft 24 .

S4: Manually weld the corrugated steel web being installed on the installed corrugated steel web, the existing machinery continues to push the multi-section telescopic rod 26, and the multi-section telescopic rod 26 drives the hook 29 to move out from above the corrugated steel web, The multi-section telescopic rod 26 is retracted, so as to facilitate the disassembly of the connector 2, the locking screw is taken out from the two L-shaped plates 361 by the existing machinery, and the L-shaped plate 361 close to the limit arc plate 37 is removed from the The rotating block 35 is removed from the top, so as to facilitate the disassembly of the clamping mechanism 36 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. A corrugated steel web bridge cantilever construction auxiliary equipment, comprising a fixing piece (1), a connecting piece (2), a supporting piece (3) and a placing piece (4), characterized in that: the fixing piece (1) A connecting piece (2) is inserted on the upper part, a supporting piece (3) is installed symmetrically at both ends of the connecting piece (2), and a placing piece (4) is inserted at the lower end of the supporting piece (3). The structure of the fixing part (1) is the same; among them: The supporting member (3) comprises a rectangular plate (31) mounted on the end of the connecting member (2), and two supporting plates (32) are symmetrically installed at the upper end of the rectangular plate (31) in front and rear, and the supporting plate (32) is positioned between the two supporting plates (32). A support shaft (33) is installed between the two sides, a limiting plate (34) is installed at the upper end of the rectangular plate (31) near the connecting piece (2), and a rotating block (35) is rotatably connected to the support shaft (33). The rotating block (35) ) A clamping mechanism (36) is symmetrically arranged at the upper end, and the clamping mechanism (36) at the position close to the limit plate (34) is fixedly connected with the upper end of the rotating block (35), away from the clamp mechanism (36) at the limit plate (34). 36) is slidably connected with the upper end of the rotating block (35), the two clamping mechanisms (36) are threadedly connected by a plurality of locking screws, and a sliding through hole is formed on the rectangular plate (31) away from the limit plate (34). , a limit arc plate (37) is slidably connected inside the sliding through hole, the limit arc plate (37) is provided with a plurality of evenly distributed clamping through holes, and a cylindrical rod (38) is slidably connected in the clamping through holes. A plurality of supporting columns (39) evenly distributed in the circumferential direction are installed at the lower end of the plate (31); The clamping mechanism (36) includes an L-shaped plate (361) connected to the upper end of the rotating block (35), a cavity is formed on the horizontal section of the L-shaped plate (361), and an upper wall of the cavity slides through a lift plate (362), a contact plate (363) is installed on the upper end of the lifting plate (362), a return spring (364) is symmetrically installed between the lower end of the contact plate (363) and the horizontal section of the L-shaped plate (361), and the upper end of the contact plate (363) A guide groove is provided, a plurality of evenly distributed guide columns (365) are installed on the wall of the guide groove, and a clamping plate (366) is slidably connected to the plurality of guide columns (365), and the clamping plate (366) is close to the L A trapezoidal block (367) is installed on the end face of the vertical section of the profile plate (361), and a fitting plate (368) is inserted into the end face of the vertical section of the clamping plate (366) away from the L-shaped plate (361). The trapezoidal block (367) A push block (369) is provided below, and the push block (369) is installed on the vertical section of the L-shaped plate (361). 2 . The corrugated steel web bridge cantilever construction auxiliary equipment according to claim 1 , wherein the fixing member ( 1 ) comprises a fixing plate ( 11 ), and the upper end of the fixing plate ( 11 ) has four corners. 3 . A limit ring (12) is installed on the limit ring (12), a snap opening is provided on the limit ring (12), a support bar (13) is snapped at the two adjacent snap openings, and the two support bars (13) are placed between them. There are clamping strips (14). 3. A corrugated steel web bridge cantilever construction auxiliary equipment according to claim 2, characterized in that: the connector (2) comprises a positioning column (22) inserted into the limit ring (12) ), a connecting plate (21) is installed on the upper ends of a plurality of the positioning columns (22), the two ends of the connecting plate (21) are respectively fixedly connected with the two rectangular plates (31), and the upper ends of the connecting plates (21) are symmetrically installed with Two U-shaped frames (23) with openings facing upward, a cylindrical shaft (24) is rotatably connected between the side walls of the U-shaped frame (23), and a rotating sleeve (25) is rotatably connected to the middle of the outer surface of the cylindrical shaft (24), which rotates A multi-section telescopic rod (26) is installed on the sleeve (25), a connecting strip is installed at the end of the multi-section telescopic rod (26) away from the rotating sleeve (25), and a winding roller is symmetrically installed on the outer surface of the cylindrical shaft (24) front and rear (27), a wire rope (28) is wound on the winding roller (27), and a hook (29) is installed at the end of the wire rope (28) away from the winding roller (27), and the hook (29) is connected to the end of the connecting bar For fixed connection, a clamping mechanism (20) is symmetrically connected at the front and rear ends of the cylindrical shaft (24). 4. A corrugated steel web bridge cantilever construction auxiliary equipment according to claim 3, characterized in that: the clamping mechanism (20) comprises a connecting telescopic rod (20) installed at the end of the cylindrical shaft (24). 201), a disk (202) is installed on the end of the connecting telescopic rod (201) away from the cylindrical shaft (24), and a plurality of circumferentially evenly distributed cards are installed on the end surface of the disk (202) close to the U-shaped frame (23). The positioning column (203) is snap-fitted with the side wall of the U-shaped frame (23), and a handle (204) is installed on the end surface of the disc (202) away from the U-shaped frame (23). 5. A corrugated steel web bridge cantilever construction auxiliary equipment according to claim 2, characterized in that: the pushing block (369) is in a trapezoidal structure, and the inclined plane on the pushing block (369) is connected to the trapezoidal block (369). 367) on the sloped slip fit. 6 . The corrugated steel web bridge cantilever construction auxiliary equipment according to claim 2 , wherein a plurality of sliding balls are rotatably connected to the upper end of the support bar ( 13 ). 7 . 7. A corrugated steel web bridge cantilever construction auxiliary equipment according to claim 1, characterized in that: the support column (39) has a stepped cylindrical structure, and the support column (39) is inserted into the placement member (4) Match up. 8. A corrugated steel web bridge cantilever construction auxiliary equipment according to claim 3, characterized in that: the positioning column (22) has a stepped cylindrical structure, and the lower end of the positioning column (22) is connected to the limit ring (12). ) mating.

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