Cantilever bridge fabrication machine

Abstract

A cantilever bridge fabrication machine comprises a main truss, a front upper cross beam arranged on the main truss, a cantilever crane and a first installation assembly, and the cantilever crane comprises a supporting piece, a rotary arm and a hoisting assembly; one end of the supporting piece is detachably connected to the front upper cross beam, the rotating arm is detachably connected to the other end of the supporting piece in a horizontal rotating mode, and the hoisting assembly is arranged on the rotating arm in a translation mode; the first mounting assembly is used for being detachably connected to the rotating arm and the top face of a poured beam body, and the first mounting assembly comprises at least two sets of first mounting pieces arranged at intervals. According to the cantilever bridge fabrication machine, the safety problem caused by the fact that a cantilever crane is used for dismantling the front upper cross beam illegally in the construction process of the cantilever bridge fabrication machine can be avoided, and meanwhile the problem that when the cantilever bridge fabrication machine retreats, self-dismantling of the front upper cross beam is inconvenient is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of hanging basket construction equipment, and in particular to a cantilever bridge building machine. Background Technology

[0002] Cantilever construction refers to a construction method in which concrete beams are poured symmetrically and in a balanced manner, segment by segment, towards the mid-span of the bridge, with prestress applied segment by segment, using specialized equipment on both sides of the bridge pier as the center. A formwork is a specialized piece of equipment used in cantilever construction to bear the weight of the beam and construction loads, and can move forward segment by segment. A cantilever bridge-building machine is a type of formwork. The structural characteristic of a cantilever bridge-building machine is that its main load-bearing members are located below the beam surface.

[0003] Existing cantilever bridge construction machines are usually equipped with cantilever cranes, which are mainly used to lift some small parts, such as prestressed tensioning jacks, which to some extent solves the problem that bridge deck lifting equipment cannot be brought into the site and that manual handling is difficult.

[0004] Currently, the cantilever crane 30 on the cantilever bridge building machine faces the following problems in actual use: During the reversing process of the cantilever bridge building machine, the front upper crossbeam 20 needs to be disassembled first. Disassembling the front upper crossbeam involves the self-disassembly of the cantilever crane. Due to a series of problems such as the difficulty in bringing lifting equipment to the construction site, the front upper crossbeam 20 is not easily self-disassembled. Therefore, problems such as these exist during construction. Figure 1 The problem shown is the improper use of the cantilever crane 30 to dismantle the front upper crossbeam 20. The front upper crossbeam 20 has a large structural size and heavy weight, which far exceeds the load-bearing capacity of the cantilever crane 30. This improper operation will bring serious safety problems. Utility Model Content

[0005] In view of this, this utility model provides a cantilever bridge building machine, which can avoid the safety problems caused by the illegal use of cantilever cranes to remove the front upper crossbeam during the construction of the cantilever bridge building machine, and at the same time solves the problem of the inconvenience of self-disassembly of the front upper crossbeam when the cantilever bridge building machine moves backward.

[0006] A cantilever bridge-building machine includes a main truss and a front upper crossbeam mounted on the main truss; the cantilever bridge-building machine further includes a cantilever crane and a first installation assembly, the cantilever crane including a support member, a slewing arm, and a hoisting assembly; wherein, one end of the support member is detachably connected to the front upper crossbeam, the slewing arm is detachably and horizontally rotatably connected to the other end of the support member, and the hoisting assembly is translatably mounted on the slewing arm; the first installation assembly is used to detachably connect to the slewing arm and the top surface of the cast-in-place beam, and the first installation assembly includes at least two sets of spaced-apart first installation members.

[0007] In one embodiment, the support member includes a first part and a second part that are detachably connected to each other; wherein the first part is detachably connected to the front upper crossbeam, the slewing arm is detachably and horizontally rotatably connected to the second part, and the length of the second part is greater than the length of the first part; the slewing arm is horizontally rotatably connected to the first mounting member, so that the second part can rotate horizontally with the slewing arm to replace a set of the first mounting members on the top surface of the cast beam.

[0008] In one embodiment, the cantilever bridge-building machine further includes a second mounting assembly for detachably connecting to the top surface of the slewing arm and the cast-in-place beam. The second mounting assembly includes at least two sets of spaced-apart second mounting members, the length of which differs from that of the first mounting member.

[0009] In one embodiment, the lengths of both the first mounting member and the second mounting member are less than the length of the support member.

[0010] In one embodiment, both the support member and the first mounting member are rod-shaped structures.

[0011] In one embodiment, the first mounting member is provided with a support plate at one end for connecting to the top surface of the cast beam and the support member is provided with a support plate at one end for connecting to the front upper crossbeam. The support plate is provided with reinforcing ribs at intervals along the circumference of the first mounting member or the support member, and the end of the first mounting member for connecting to the slewing arm is provided with reinforcing ribs at intervals along the axial direction.

[0012] In one embodiment, the rotary arm is provided with a flange plate for connecting the first mounting component.

[0013] In one embodiment, the hoisting assembly is an electric hoist.

[0014] In one embodiment, the slewing arm is a hollow steel structure, and the slewing arm has a built-in traveling mechanism for controlling the hook stroke of the electric hoist.

[0015] The cantilever bridge-building machine provided in this application does not involve the first or second mounting components during its movement. Instead, after the cantilever bridge-building machine has completed casting, the first or second mounting components are detachably fixed to the top surface of the cast beam and detachably connected to the slewing arm of the cantilever crane. The support connecting the cantilever crane to the front upper crossbeam is removed, thus converting the cantilever crane into a lifting device for the front upper crossbeam. This achieves self-disassembly of the front upper crossbeam. The lever arm of the lifting device can be shortened by adjusting the spacing between multiple sets of first or second mounting components, thereby greatly enhancing the lifting capacity of the cantilever crane. Stable and reliable, it facilitates the lifting and dismantling of the front upper crossbeam when the cantilever bridge-building machine is retracting, eliminating the need for additional large lifting equipment to assist in the dismantling of the front upper crossbeam. This effectively improves resource utilization, prevents safety accidents caused by improper operation of the cantilever crane on the construction site, and enhances the operational standardization of the cantilever crane. The structural modification cost of the cantilever crane on the cantilever bridge-building machine is low and the efficiency is high. It is suitable for bridge types of different lengths and cross-sectional heights. By setting multiple sets of installation components with different heights, the cantilever crane can be converted into lifting equipment of different heights for the front upper crossbeam according to different construction scenarios, thereby greatly improving the applicability of the cantilever crane. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 The illustration shows the improper operation of the cantilever crane in an existing cantilever bridge building machine;

[0018] Figure 2 The schematic diagram illustrates the overall structure of the cantilever crane in Embodiment 1 of this application;

[0019] Figure 3 The schematic diagram illustrates the working state of the cantilever crane in Embodiment 1 of this application;

[0020] Figure 4 This schematically illustrates the state of the cantilever crane of Embodiment 1 of this application in its traveling state;

[0021] Figure 5 This illustration schematically shows the state of the cantilever crane of Embodiment 1 of this application after construction is completed;

[0022] Figure 6 This schematically illustrates the working state of the cantilever crane of Embodiment 1 of this application when the upper crossbeam is being dismantled;

[0023] Figure 7 The schematic diagram illustrates the overall structure of the cantilever crane in Embodiment 2 of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Main truss; 20. Front upper crossbeam; 30. Cantilever crane; 31. Support component; 313. First part; 315. Second part; 32. Slewing arm; 33. Lifting assembly; 40. First installation assembly; 401. First installation component; 50. Support plate; 60. Reinforcing rib; 102. Cast-in-place beam. Detailed Implementation

[0026] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set up," "equipped with," "located in," "installed," and "connected," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0028] The terms “outer side,” “upper,” “top surface,” “end,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, unless otherwise expressly specified and limited, the terms "first", "second", etc. are used only to distinguish elements with similar properties, and not to indicate or imply relative importance or a specific order.

[0030] The term “include” or any other variation thereof is intended to cover non-exclusive inclusion, which includes not only those elements listed, but also other elements not expressly listed.

[0031] Example 1

[0032] like Figures 2 to 4As shown, the cantilever bridge-building machine of Embodiment 1 of this application includes a main truss 10 and a front upper crossbeam 20 disposed on the main truss 10; the cantilever bridge-building machine also includes a cantilever crane 30 and a first installation assembly 40. The cantilever crane 30 includes a support member 31, a slewing arm 32 and a hoisting assembly 33; wherein, one end of the support member 31 is detachably connected to the front upper crossbeam 20, the slewing arm 32 is detachably and horizontally rotatably connected to the other end of the support member 31, and the hoisting assembly 33 is translatably disposed on the slewing arm 32; the first installation assembly 40 is used to detachably connect to the slewing arm 32 and the top surface of the cast beam 102, and the first installation assembly 40 includes at least two sets of spaced first installation members 401.

[0033] In an embodiment not shown, the cantilever bridge-building machine further includes a second mounting assembly for detachably connecting to the top surface of the slewing arm 32 and the cast-in-place beam 102. The second mounting assembly includes at least two sets of spaced-apart second mounting members, the length of which differs from that of the first mounting member 401.

[0034] like Figure 5 and Figure 6 As shown, in the cantilever bridge-building machine provided in this application, the first mounting component 40 or the second mounting component is not used during the movement of the cantilever bridge-building machine. Instead, after the cantilever bridge-building machine has completed the pouring, the first mounting component 40 or the second mounting component is detachably fixed to the top surface of the poured beam 102 and detachably connected to the slewing arm 32 of the cantilever crane 30. The support member 31 connecting the cantilever crane 30 to the front upper crossbeam 20 is removed, thereby converting the cantilever crane 30 into a lifting device for lifting the front upper crossbeam 20. This achieves the self-disassembly of the front upper crossbeam 20. The lever arm of the lifting device can be shortened by adjusting the spacing between multiple sets of first mounting components 401 or multiple sets of second mounting components, thereby greatly enhancing the cantilever crane 30. The lifting capacity and stability of the 0-type cantilever crane facilitate the lifting and dismantling of the front upper crossbeam 20 when the cantilever bridge-building machine is retracting, without the need for additional large lifting equipment to assist in the dismantling of the front upper crossbeam 20. This effectively improves resource utilization and can prevent safety accidents caused by improper operation of the cantilever crane 30 on the construction site, thus improving the operational standardization of the cantilever crane 30. The structural modification cost of the cantilever crane 30 on the cantilever bridge-building machine is low and the efficiency is high. It is suitable for bridge types of different lengths and cross-sectional heights. By setting multiple sets of installation components with different heights, the cantilever crane 30 can be converted into lifting equipment of different heights for the front upper crossbeam 20 according to different construction scenarios, thereby greatly improving the applicability of the cantilever crane 30.

[0035] like Figure 2As shown, in one embodiment, the length of the first mounting member 401 and the length of the second mounting member are both less than the length of the support member 31. This makes it easier to control the overall installation height of the cantilever crane 30 when it is converted into a lifting device for the upper crossbeam 20 before hoisting, thus avoiding the occupation of a large hoisting space and making it unsuitable for use in a narrow construction space.

[0036] like Figure 2 As shown, in one embodiment, both the support member 31 and the first mounting member 401 are rod-shaped structures. Specifically, setting the support member 31 and the first mounting member 401 as rod-shaped structures is simple in structure and easy to process, manufacture, assemble, disassemble and transport.

[0037] In one embodiment, the first mounting member 401, at one end connecting to the top surface of the cast-in-place beam 102, and the support member 31, at one end connecting to the upper front crossbeam 20, are both provided with support plates 50. Reinforcing ribs 60 are spaced circumferentially along the first mounting member 401 or the support member 31, and reinforcing ribs 60 are spaced axially along the end of the first mounting member 401 connecting to the slewing arm 32. Specifically, by providing support plates 50 and reinforcing ribs 60, the structural strength and stability of the cantilever crane 30 during operation can be greatly improved. In one embodiment, the slewing arm 32 is provided with a flange plate for connecting to the first mounting member 401. By further providing the flange plate, flexible changes in the lifting configuration and assembly / disassembly of the cantilever crane 30 can be achieved.

[0038] In one embodiment, the lifting assembly 33 is an electric hoist. Specifically, the electric hoist features a compact structure, small size, light weight, simple operation, and convenient use, making it particularly suitable for cantilever bridge construction machines operating in confined spaces. In one embodiment, the slewing boom 32 is a hollow steel structure with a built-in traveling mechanism that controls the hook stroke of the electric hoist.

[0039] Specifically, in this embodiment, the hoisting assembly 33 can be an electric hoist in the prior art, and the rotation of the slewing arm 32 can be achieved by a slewing arm rotation drive device in the prior art, for example, by a cycloidal pinwheel reducer to drive the cantilever rotation. The electric hoist moves left and right linearly on the I-beam hollow steel structure and lifts heavy objects. The slewing arm 32 is a hollow steel structure, which is lightweight, has a large span, a large lifting capacity, is economical and durable, and has a built-in walking mechanism. It can use special engineering plastic wheels with rolling bearings, which have low friction, are easy to walk on, and have small structural dimensions, which is particularly beneficial for increasing the hook stroke of the electric hoist.

[0040] Example 2

[0041] like Figure 7As shown, the cantilever bridge-building machine of Embodiment 2 of this application differs from the aforementioned Embodiment 1 only in that the support member 31 of the cantilever crane 30 includes a first part 313 and a second part 315 that are detachably connected to each other; wherein, the first part 313 is detachably connected to the front upper crossbeam 20, and the slewing arm 32 is detachably and horizontally rotatably connected to the second part 315, and the length of the second part 315 is greater than the length of the first part 313; the slewing arm 32 is horizontally rotatably connected to the first mounting member 401 so that the second part 315 can rotate horizontally with the slewing arm 32 to replace a set of first mounting members 401 on the top surface of the cast beam 102.

[0042] Specifically, in the cantilever bridge-building machine of this application embodiment, the support member 31 of the cantilever crane 30 is configured as two detachably connected parts. The installation height of the first part 313 is not higher than the top surface of the cast beam 102. After the front upper crossbeam 20 is used up, the longer second part 315 can be removed. The second part 315 is moved to the top surface of the cast beam 102 to replace a set of first mounting members 401, converting the cantilever crane 30 into a lifting tool for hoisting the front upper crossbeam 20, thus achieving the self-disassembly of the front upper crossbeam 20. Since the installation height of the first part 313 is lower than the top surface of the cast beam, the self-disassembly and hoisting of the front upper crossbeam 20 is more convenient. Obviously, in the cantilever bridge-building machine of this application embodiment 2, the working state adjustment of the cantilever crane 30 is more flexible, and the support member 31 of the cantilever crane 30 can be used reasonably, greatly simplifying the structure, saving costs and improving construction efficiency.

[0043] As can be seen from the above embodiments, the cantilever bridge building machine involved in this application can avoid the safety problems caused by the illegal use of cantilever cranes to remove the front upper crossbeam during the construction of the cantilever bridge building machine, and at the same time solve the problem that the front upper crossbeam is inconvenient to remove when the cantilever bridge building machine is retracting.

[0044] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily obtained by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A cantilever bridge-building machine, comprising a main truss (10) and a front upper crossbeam (20) disposed on the main truss (10); characterized in that, The cantilever bridge-building machine also includes a cantilever crane (30) and a first installation assembly (40), wherein the cantilever crane (30) includes a support member (31), a slewing arm (32), and a lifting assembly (33); wherein, One end of the support member (31) is detachably connected to the front upper crossbeam (20), the slewing arm (32) is detachably and horizontally rotatably connected to the other end of the support member (31), and the hoisting assembly (33) is slidably mounted on the slewing arm (32). The first mounting assembly (40) is detachably connected to the top surface of the slewing arm (32) and the cast beam (102), and the first mounting assembly (40) includes at least two sets of spaced first mounting members (401).

2. The cantilever bridge-building machine according to claim 1, characterized in that, The support member (31) includes a first part (313) and a second part (315) that are detachably connected to each other; wherein, The first part (313) is detachably connected to the front upper crossbeam (20), and the slewing arm (32) is detachably and horizontally rotatably connected to the second part (315), the length of the second part (315) being greater than the length of the first part (313); The slewing arm (32) is rotatably connected to the first mounting member (401) so that the second part (315) can be rotatably rotated with the slewing arm (32) to replace a set of the first mounting members (401) on the top surface of the cast beam (102).

3. The cantilever bridge-building machine according to claim 1 or 2, characterized in that, The cantilever bridge-building machine also includes a second mounting assembly for detachably connecting to the top surface of the slewing arm (32) and the cast beam (102). The second mounting assembly includes at least two sets of spaced second mounting members, the length of which is different from that of the first mounting member (401).

4. The cantilever bridge-building machine according to claim 3, characterized in that, The lengths of the first mounting member (401) and the second mounting member are both less than the length of the support member (31).

5. The cantilever bridge-building machine according to claim 1 or 2, characterized in that, Both the support member (31) and the first mounting member (401) are rod-shaped structures.

6. The cantilever bridge-building machine according to claim 1 or 2, characterized in that, The first mounting member (401) is provided with a support plate (50) at one end of the top surface of the cast beam (102) and at one end of the support member (31) connected to the front upper crossbeam (20). The support plate (50) is provided with reinforcing ribs (60) spaced apart along the circumference of the first mounting member (401) or the support member (31). The end of the first mounting member (401) connected to the rotary arm (32) is provided with reinforcing ribs (60) spaced apart along the axial direction.

7. The cantilever bridge-building machine according to claim 1 or 2, characterized in that, The slewing arm (32) is provided with a flange plate for connecting the first mounting component (401).

8. The cantilever bridge-building machine according to claim 1 or 2, characterized in that, The hoisting assembly (33) is an electric hoist.

9. The cantilever bridge-building machine according to claim 8, characterized in that, The slewing arm (32) is a hollow steel structure, and the slewing arm (32) has a built-in traveling mechanism, which is used to control the hook stroke of the electric hoist.

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