Novel cantilever bridge fabrication machine

Abstract

The utility model belongs to the technical field of bridge fabrication machines, and particularly relates to a novel cantilever bridge fabrication machine which comprises a main truss which is an inverted trapezoidal frame. Two inner beams distributed in a splayed shape are symmetrically fixed to the middle of the main truss. The outer end and the inner end of the top of the main truss are connected with an outer connecting base and an inner connecting base correspondingly. The primary truss can be used for a through cantilever bridge fabrication machine and a deck cantilever bridge fabrication machine. The main truss is simple and novel in structure, even in stress, convenient to manufacture and assemble, capable of being used for a through type cantilever bridge fabrication machine and a deck type cantilever bridge fabrication machine, and good in universality. The through type cantilever bridge fabrication machine and the deck type cantilever bridge fabrication machine using the main truss are simple in structure, the main truss can move along the concrete beam conveniently, and the construction efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of bridge -building machine, concretely relates to a novel cantilever bridge -building machine. BACKGROUND

[0002] The bridge -building machine is a kind of mechanical equipment specially used for bridge construction, which can significantly improve bridge construction speed and precision, reduce cost and improve construction environment.The bridge -building machine is divided into upper bearing type bridge -building machine and lower bearing type bridge -building machine, wherein the main mechanism of the upper bearing type bridge -building machine is located on the bridge deck, and the main beam is supported on the top of pier and the beam segment, without occupying the clearance under the bridge, and without needing pier-side bracket.The side beam of the lower bearing type bridge -building machine is located below the bridge deck, and the middle part of the side beam is hung under the concrete beam by saddle beam, and the rear part is supported under the flange plate of the concrete beam by support wheel group.Both types of bridge -building machines have their characteristics and application scenarios, and the appropriate bridge -building machine type can be selected according to the specific bridge construction requirements and environmental conditions.

[0003] In the prior art, the bridge -building machine is disclosed, such as CN117845756A discloses a lower bearing type cantilever bridge -building machine and its construction method, the side beam of the lower bearing type cantilever bridge -building machine is provided with two roots along the longitudinal direction, and the two side beams are respectively connected to the bottom of the two ends of the saddle beam and located below the flange plate of the poured concrete beam;The side beam includes connected side vertical truss, side plane truss and side inclined plane bracing truss, wherein the side vertical truss is the main stress truss;The side plane truss is a horizontal stiffness reinforcement truss, which can also be used as a working platform;The side inclined plane bracing truss is a stable truss.The side beam disclosed in the patent is mainly used for lower bearing type bridge -building machine, which is not suitable for upper bearing type bridge -building machine in actual construction process, and the universality has certain deficiency.Moreover, the side beam includes three trusses, and each truss is composed of multiple rod members, so the structure is complex, and it is not convenient to manufacture and assemble.

[0004] The information disclosed in this BACKGROUND section is only intended to increase an understanding of the general background of the present utility model, and should not be taken as recognition or admission that this information constitutes prior art with respect to the present utility model in any form. CONTENT OF UTILITY MODEL

[0005] The utility model aims at providing a novel cantilever bridge -building machine to solve the problems existing in the side beam of the lower bearing type cantilever bridge -building machine in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A novel cantilever bridge -building machine, comprising:

[0008] Main truss, the main truss is inverted trapezoidal frame;2 " eight " type distribution inner beams are fixed in the middle part of the main truss symmetrically;Outer connecting seat and inner connecting seat are connected to the outer end and inner end of the top of the main truss respectively;

[0009] When the main truss is used in a through-cantilever bridge machine, the through-cantilever bridge machine comprises the main truss arranged symmetrically below the flanges of the concrete beam, the saddle beam crossing the concrete beam and connecting the main truss, and the counter-jack wheel arranged at the top of the inner end of the main truss.

[0010] When the main truss is used in a through-cantilever bridge machine, the through-cantilever bridge machine comprises the main truss arranged symmetrically below the flanges of the concrete beam, the saddle beam crossing the concrete beam and connecting the main truss, and the counter-jack wheel arranged at the top of the inner end of the main truss.

[0011] As a preferred, the top of the outer connecting seat of the main truss is provided with an upper beam, and the bottom of the concrete beam is provided with a bottom mold carrier; the outer end of the bottom mold carrier of the through-cantilever bridge machine is connected to the upper beam through a pull rod, and the inner end is connected to the middle position of the bottom of the main truss through a pull rod; the outer end of the bottom mold carrier of the through-cantilever bridge machine is connected to the upper beam through a pull rod, and the inner end is connected to the concrete beam.

[0012] As a preferred, the two ends of the saddle beam are symmetrically fixed with a C-shaped connecting beam, and the inner end of the connecting beam is fixed with a fixed beam; a fixed seat is hingedly connected to the middle position of the top of the main truss through a pin shaft, and a containing groove corresponding to the position of the fixed beam is formed in the fixed seat; the size of the containing groove is greater than that of the fixed beam; the fixed seat is fixed on the saddle beam through a pull rod, and the top of the fixed seat abuts against the lower surface of the flange of the concrete beam.

[0013] As a preferred, when the main truss is used in a through-cantilever bridge machine, the top of the concrete beam is paved with two through-cantilever walking tracks extending along the length of the concrete beam, the bottom of the saddle beam is fixed with a support seat at a position on one side of the through-cantilever walking track, the concrete beam is provided with a cushion beam corresponding to the support seat, the bottom of the saddle beam is fixed with a jacking oil cylinder vertically downward at a position on the other side of the through-cantilever walking track, and the bottom of the saddle beam is provided with a moving seat slidingly matched with the through-cantilever walking track between the support seat and the jacking oil cylinder.

[0014] As a preferred, the top of the inner connecting seat is fixed with a rear jacking oil cylinder and a counter-jack screw rod.

[0015] As a preferred, when the main truss is used in a through-cantilever bridge machine, the top of the concrete beam is paved with two through-cantilever walking tracks extending along the length of the concrete beam, the bottom of the saddle beam is fixed with a support seat at a position on one side of the through-cantilever walking track, the concrete beam is provided with a cushion beam corresponding to the support seat, the bottom of the saddle beam is fixed with a jacking oil cylinder vertically downward at a position on the other side of the through-cantilever walking track, and the bottom of the saddle beam is provided with a moving seat slidingly matched with the through-cantilever walking track between the support seat and the jacking oil cylinder.

[0016] Preferably, the top of the upper-bearing walking track is fixed with two guide bars at intervals; the bottom of the main truss is provided with a guide slide at the middle position, and guide pulleys are installed on both sides of the guide slide. The guide pulleys have guide grooves corresponding to the guide bars recessed in the middle of their circumferential surfaces.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This utility model features a simple and novel main truss structure with uniform stress distribution, facilitating manufacturing and assembly. It can be used in both lower-bearing and upper-bearing cantilever bridge construction machines, demonstrating good versatility. Furthermore, the use of this utility model's main truss in both lower-bearing and upper-bearing cantilever bridge construction machines results in a simple structure that facilitates movement of the main truss along the concrete beam, thus improving construction efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main truss structure of this utility model;

[0020] Figure 2 for Figure 1 Top view;

[0021] Figure 3 This is a schematic diagram of the structure of the under-bearing cantilever bridge building machine of this utility model;

[0022] Figure 4 for Figure 3 A sectional view;

[0023] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 This is a schematic diagram of the structure of the upper-bearing cantilever bridge building machine of this utility model;

[0025] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0026] Figure 8 for Figure 6 A sectional view;

[0027] Figure 9 for Figure 8 Enlarged view of point C in the middle.

[0028] Explanation of key figure labels:

[0029] 1, main truss; 2, inner beam; 3, outer connecting seat; 4, inner connecting seat; 5, concrete beam; 6, saddle beam; 7, reverse jacking wheel; 8, upper cross beam; 9, bottom die carrier; 10, pull rod; 11, rear jacking cylinder; 12, reverse jacking screw; 13, connecting frame; 14, connecting beam; 15, fixed beam; 16, fixed seat; 161, accommodating groove; 17, lower bearing type walking track; 18, supporting seat; 19, cushion beam; 20, jacking cylinder; 21, moving seat; 22, flange plate; 23, limiting sliding seat; 24, limiting pulley; 25, guide bar; 26, guide sliding seat; 27, guide pulley; 28, guide groove; 29, moving cylinder; 30, upper bearing type walking track. DETAILED DESCRIPTION

[0030] The technical scheme of the utility model will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the skilled in the art without creative labor belong to the scope of protection of the utility model.

[0031] Example

[0032] Referring to the accompanying Figures 1-9 A novel cantilever bridge builder, comprising:

[0033] The main truss 1 is in the shape of an inverted ladder frame. Two inner beams 2 in the shape of an "8" are symmetrically fixed in the middle of the main truss 1. An outer connecting seat 3 and an inner connecting seat 4 are respectively connected to the outer end and the inner end of the top of the main truss 1.

[0034] When the main truss 1 is used for a lower bearing type cantilever bridge builder, the lower bearing type cantilever bridge builder comprises the main truss 1 which is arranged in pairs of supports below the flanges of the concrete beam 5, the saddle beam 6 which spans the concrete beam 5 and is connected to the main truss 1, and the reverse jacking wheel 7 which is arranged at the top of the inner end of the main truss 1. The top of the outer connecting seat 3 of the main truss 1 is provided with the upper cross beam 8. The bottom of the concrete beam 5 is provided with the bottom die carrier 9. The bottom die plate (not marked in the drawing) is fixed to the top of the bottom die carrier 9. The outer end of the bottom die carrier 9 is connected to the upper cross beam 8 through the pull rod 10. The inner end of the bottom die carrier 9 is connected to the middle position of the bottom of the main truss 1 through the pull rod 10. In addition, the top of the inner connecting seat 4 is fixed with the rear jacking cylinder 11 and the reverse jacking screw 12. It needs to be supplemented that the top of the inner connecting seat 4 is fixed with a threaded sleeve (not marked in the drawing) which is vertically upward and threadedly matched with the reverse jacking screw 12. The telescopic end of the rear jacking cylinder 11 and the top of the reverse jacking screw 12 are vertically upward abut against the lower surface of the flange of the concrete beam 5. A gap is left between the top of the reverse jacking wheel 7 and the lower surface of the flange. In addition, the inner end of the bottom die carrier 9 is also connected to the bottom of the concrete beam 5 through the pull rod 10. When the main truss 1 needs to be moved subsequently, the connection between the bottom die carrier 9 and the concrete beam 5 needs to be removed.

[0035] When the main truss 1 is used in the decked cantilever bridge machine, the bottom of the main truss 1 is towards the decked cantilever bridge machine, which comprises two main trusses 1 symmetrically arranged on the top of the concrete beam 5 and extending along the length direction of the concrete beam 5, and a connecting frame 13 fixedly connected with the two main trusses 1 between the two main trusses 1; the top of the outer connecting seat 3 of the main truss 1 is provided with an upper cross beam 8, the bottom of the concrete beam 5 is provided with a bottom die carrier 9, and a bottom die plate (not marked in the drawing) is fixed to the top of the bottom die carrier 9; the outer end of the bottom die carrier 9 is connected with the upper cross beam 8 through a pull rod 10, and the inner end of the bottom die carrier 9 is connected with the concrete beam 5 through the pull rod 10.

[0036] In the decked cantilever bridge machine, the two ends of the saddle beam 6 are symmetrically fixed with a "C" type connecting beam 14, and the inner end of the connecting beam 14 is fixed with a fixed beam 15; the middle position of the top of the main truss 1 is hingedly connected with a fixed seat 16 through a pin shaft, and the top of the fixed seat 16 is attached to the lower surface of the flange of the concrete beam 5; the fixed seat 16 is provided with a containing groove 161 corresponding to the position of the fixed beam 15, and the size of the containing groove 161 is greater than that of the fixed beam 15; the fixed seat 16 is fixed on the saddle beam 6 through the pull rod 10, and at this time the fixed beam 15 is only inserted into the containing groove 161 and does not contact the wall of the containing groove 161; in addition, the top of the concrete beam 5 is paved with two decked running tracks 17 extending along the length direction thereof, and the bottom of the saddle beam 6 is fixed with a support seat 18 at a position on one side of the decked running tracks 17; the concrete beam 5 is provided with a cushion beam 19 corresponding to the support seat 18; the bottom of the saddle beam 6 is fixed with a vertically downward jacking oil cylinder 20 at a position on the other side of the decked running tracks 17; the bottom of the saddle beam 6 is provided with a moving seat 21 slidingly guided with the decked running tracks 17 at a position between the support seat 18 and the jacking oil cylinder 20, and the moving seat 21 is provided with limiting plates on both sides thereof, which are located on the side plates of the decked running tracks 17 and thus play a limiting role.

[0037] In the decked cantilever bridge machine, the top of the concrete beam 5 is paved with two decked running tracks 30 extending along the length direction thereof, and the top of the decked running tracks 30 is provided with flange plates 22 on both sides thereof; the inner connecting seat 4 of the main truss 1 is fixed on the top of the concrete beam 5 through the pull rod 10, and the bottom of the inner connecting seat 4 is provided with a limiting sliding seat 23; the limiting sliding seat 23 is installed with limiting pulleys 24 on the side walls thereof, and the limiting pulleys 24 are located below the flange plates 22. In addition, the top of the decked running tracks 30 is fixed with two guide strips 25 at intervals; the bottom of the main truss 1 is provided with a guide sliding seat 26, and the guide sliding seat 26 is installed with guide pulleys 27 on both sides thereof, and the circumferential surface of the guide pulleys 27 is concavely provided with guide grooves 28 corresponding to the guide strips 25.

[0038] In the through type cantilever bridge builder, when installing and fixing the bridge template, the telescopic end of the jacking cylinder 20 is in the retracted state, the supporting seat 18 abuts against the top of the cushion beam 19, and the moving seat 21 is separated from the through type walking track 17. When the main truss 1 needs to be moved, the fixed seat 16 is detached from the saddle beam 6, the fixed seat 16 is lowered and hung on the fixed beam 15. The telescopic end of the rear jacking cylinder 11 is retracted and separated from the lower surface of the flange of the concrete beam 5. The top of the reverse jacking screw 12 is separated from the lower surface of the flange of the concrete beam 5. The inner end of the main truss 1 is rotated upward. The reverse jacking wheel 7 is attached to the lower surface of the flange of the concrete beam 5. The telescopic end of the jacking cylinder 20 is extended and abuts against the top of the concrete beam 5. The jacking cylinder 20 jacks up the saddle beam 6. The supporting seat 18 and the cushion beam 19 are separated. The cushion beam 19 is removed. The telescopic end of the jacking cylinder 20 is retracted. The saddle beam 6 is lowered. The moving seat 21 falls on the through type walking track 17. One end of the moving cylinder 29 is hinged to the moving seat 21. The other end is installed on the through type walking track 17. It needs to be supplemented here that the implementation mode can be that the other end of the moving cylinder 29 is hinged to a seat. The seat is buckled on the through type walking track 17. A pin shaft penetrates the seat and the through type walking track 17 (a plurality of through holes corresponding to the pin shaft are provided on the through type walking track 17 at intervals) to install the other end of the moving cylinder 29 on the through type walking track 17. When the telescopic end of the moving cylinder 29 is extended, the moving cylinder 29 pushes the moving seat 21 to slide on the through type walking track 17. When the moving seat 21 slides, the saddle beam 6 is moved. The saddle beam 6 drives the main truss 1 to move.

[0039] Similarly, in the top cantilever bridge builder, when the main truss 1 needs to be moved, the connection between the inner connecting seat 4 of the main truss 1 and the concrete beam 5 and the connection between the bottom mold bracket 9 and the concrete beam 5 are removed. The guide sliding seat 26 is also moved by the moving cylinder 29. One end of the moving cylinder 29 is hinged to the guide sliding seat 26. The other end is installed on the top cantilever walking track 30. When the telescopic end of the moving cylinder 29 is extended, a pushing force is generated on the guide sliding seat 26. With the guide cooperation of the guide groove 28 and the guide strip 25, the guide sliding seat 26 slides along the top cantilever walking track 30. Because the outer end of the main truss 1 is heavy and the inner end is light, the inner end of the main truss 1 will be raised. At this time, the limiting pulley 24 will abut against the lower surface of the flange plate 22 of the top cantilever walking track 30, thereby playing a limiting role and ensuring that the main truss 1 slides along the top cantilever walking track 30.

[0040] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to limit the application to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the application. The exemplary embodiments were chosen and described in order to explain the principles of the application and its practical application and to allow others skilled in the art to understand the application for various exemplary embodiments with various modifications being applicable. The scope of the application is intended to be defined by the claims and their equivalents.

Claims

1. A new type of cantilever bridge -maker, characterized in that, The utility model relates to a main truss, the main truss is inverted trapezoidal frame, the middle part of the main truss is fixed with 2 inner beams of " eight" type distribution, and the outer end and the inner end of the top of the main truss are connected with outer connecting seat and inner connecting seat respectively, When the main truss is used for the through type cantilever bridge machine, the through type cantilever bridge machine includes the main truss that is arranged to the both sides flange below of concrete beam in support, the saddle beam that is connected the main truss across concrete beam and the counter jacking wheel that is arranged in the top of the inner end of the main truss, When the main truss is used for the through type cantilever bridge machine, the through type cantilever bridge machine includes the main truss that is arranged to the both sides flange below of concrete beam in support, the saddle beam that is connected the main truss across concrete beam and the counter jacking wheel that is arranged in the top of the inner end of the main truss, The top of the outer connecting seat of the main truss is provided with the upper crossbeam, and the bottom of the concrete beam is provided with the bottom die carrier, 2. The new type of cantilever bridge machine according to claim 1, characterized in that, The outer end of the bottom die carrier of the through type cantilever bridge machine is connected with the upper crossbeam through the pull rod, and the inner end is connected with the middle position of the bottom of the main truss through the pull rod, and the outer end of the bottom die carrier of the through type cantilever bridge machine is connected with the upper crossbeam through the pull rod, and the inner end is connected with the concrete beam. The both ends of the saddle beam are fixed with the " C" type connecting beam symmetrically, the inner end of the connecting beam is fixed with the fixed beam, the middle position of the top of the main truss is hinged with the fixed seat through the pin shaft, the fixed seat is fixed on the saddle beam through the pull rod, and the top of the fixed seat abuts against the lower surface of the concrete beam flange, the fixed seat is provided with the accommodating groove corresponding to the position of the fixed beam, and the size of the accommodating groove is greater than the fixed beam.

3. The new type of cantilever bridge machine according to claim 1, characterized in that, When the main truss is used for the through type cantilever bridge machine, the top of the concrete beam is paved with two through type walking tracks extending along the length, the saddle beam bottom is fixed with the support seat at the position of one side of the through type walking track, the concrete beam is provided with the cushion beam corresponding to the support seat, the saddle beam bottom is fixed with the vertical downward jacking oil cylinder at the position of the other side of the through type walking track, and the saddle beam bottom is provided with the moving seat slidingly matched with the through type walking track between the support seat and the jacking oil cylinder.

4. The new type of cantilever bridge machine according to claim 1, characterized in that, The top of the inner connecting seat is fixed with the rear jacking oil cylinder and the counter jacking screw rod.

5. The new type of cantilever bridge machine according to claim 4, characterized in that, When the main truss is used for the through type cantilever bridge machine, the top of the concrete beam is paved with two through type walking tracks extending along the length, the saddle beam bottom is fixed with the support seat at the position of one side of the through type walking track, the concrete beam is provided with the cushion beam corresponding to the support seat, the saddle beam bottom is fixed with the vertical downward jacking oil cylinder at the position of the other side of the through type walking track, and the saddle beam bottom is provided with the moving seat slidingly matched with the through type walking track between the support seat and the jacking oil cylinder.

6. The new type of cantilever bridge-creating machine according to claim 1, characterized in that, The top of the through type walking track is fixed with two guide strips at intervals, the middle position of the bottom of the main truss is provided with the guide sliding seat, the guide sliding seat is provided with the guide pulley on both sides, and the circumferential surface of the guide pulley is recessed with the guide groove corresponding to the guide strip.

7. The new type of cantilever bridge-creating machine according to claim 6, characterized in that ​

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