Bridge building machine with construction safety

Abstract

The utility model provides a construction safety bridge builder, including main truss, still including the lower hanging beam that sets up horizontally in the front -back direction of bridge builder, the position of lower hanging beam is close to the front end and is connected with the upper horizontal link front end of main truss through connecting piece, and the rear end of lower hanging beam is connected with the front inclined pole middle part of main truss to make the height of lower hanging beam be in the middle part of main truss, and the front crossbeam of bridge builder is set up in the top of the front end of lower hanging beam, the utility model discloses through setting up lower hanging beam and setting up the front crossbeam on lower hanging beam, has reduced the overall gravity center of bridge builder, is helpful to promote the anti-overturning performance of bridge builder, and the construction platform driven by electric hoist is installed by lower hanging beam as the installation carrier, when the steel strand dress draw, grouting construction of prestressed suspension bridge, the worker who carries out the steel strand dress draw, grouting construction can be on the construction platform through the control electric hoist, and the construction position is adjusted by oneself, is more convenient, safe.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction equipment technology, specifically to a bridge building machine that ensures construction safety. Background Technology

[0002] A bridge-building machine, also known as a bridge-construction machine, is a type of machinery specifically designed for bridge construction. It can complete multiple stages of the overall bridge construction process, such as pouring concrete. The use of bridge-building machines can significantly improve the efficiency and quality of bridge construction while reducing the input of manpower and resources.

[0003] The main truss is an important supporting structure of the bridge-building machine. A template is suspended in front of the main truss. The template includes an inner mold and an outer mold. After the inner mold and the outer mold are closed, they form the concrete pouring space for the box girder.

[0004] The front crossbeam is a crucial installation structure between the formwork and the main truss. It is mounted on the main truss and connected to the formwork via slings or other installation mechanisms, allowing the formwork to be suspended below the main truss. After concrete is poured into the formwork, the front crossbeam will bear significant weight.

[0005] Please refer to Chinese patent application CN119933039A. The main truss of the existing bridge-building machine adopts a parallelogram structure composed of upper and lower horizontal bars, front and rear diagonal bars, and a middle vertical bar, with the front crossbeam located at the top of the upper horizontal bar. Due to the high position of the front crossbeam, the overall center of gravity of the bridge-building machine is raised, which is not conducive to improving the anti-overturning performance of the bridge-building machine.

[0006] In the construction of prestressed suspension bridges, the installation and grouting of steel strands are crucial steps to ensure the stability of the bridge structure. During these processes, the installation and grouting of steel strands require adjustments to their position in both the forward / backward and vertical directions depending on the construction section. However, existing bridge-building machines lack a dedicated work platform for these operations, necessitating the use of a tower crane to suspend the platform. Workers on the platform communicate with the crane operator to adjust the position. This process is inconvenient for workers on the platform, and the significant distance between the crane operator and the work site leads to large visual errors, making it difficult for the crane operator to position and move the platform. Furthermore, the platform is prone to collisions with the bridge structure, posing a significant safety hazard. Utility Model Content

[0007] The purpose of this invention is to provide a bridge-building machine that ensures safe construction.

[0008] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0009] A bridge-building machine with construction safety includes a main truss and a lower suspension beam horizontally arranged in the front-rear direction of the bridge-building machine. The lower suspension beam is connected to the front end of the upper horizontal bar of the main truss via a connector near the front end. The rear end of the lower suspension beam is connected to the middle of the front diagonal bar of the main truss, so that the height of the lower suspension beam is located in the middle of the main truss. The front crossbeam of the bridge-building machine is located at the top of the front end of the lower suspension beam.

[0010] As a further improvement of the present invention, an electric hoist is installed on the lower lifting beam, and the electric hoist can move back and forth along the lower lifting beam.

[0011] A construction platform is suspended below the electric hoist by a steel cable.

[0012] As a further improvement of the present invention, it also includes a diagonal brace, the upper end of which is connected to the rear end of the upper horizontal bar, and the lower end of which is connected to the middle of the front diagonal bar.

[0013] As a further improvement of the present invention, the connecting member includes a first hanger and a second hanger. The lower end of the first hanger is hinged to the upper end of the second hanger, the upper end of the first hanger is hinged to the front end of the upper horizontal bar, the lower end of the second hanger is hinged to the lower hanging beam near the front end, and the rear end of the lower hanging beam is hinged to the middle of the front inclined bar, so that the lower hanging beam can be rotated and parallelly stored under the front inclined bar.

[0014] As a further improvement of the present invention, the bottom of the upper horizontal bar is provided with a first receiving groove, and the upper end of the diagonal brace is hinged to the rear end of the upper horizontal bar, so that after the connection between the lower end of the diagonal brace and the middle part of the front diagonal bar is loosened, the diagonal brace can be rotated and stored in the first receiving groove.

[0015] As a further improvement of the present invention, the end connections of the upper horizontal bar, lower horizontal bar, front diagonal bar, and rear diagonal bar of the main truss are all hinged, so that the upper horizontal bar and rear diagonal bar can be rotated and stored parallel to the front diagonal bar and lower horizontal bar.

[0016] As a further improvement of the present invention, the bottom of the rear diagonal bar of the main truss is provided with a second receiving groove, and the upper end of the upright of the main truss is hinged to the upper end of the rear diagonal bar, so that after the connection between the upright and the front end of the lower horizontal bar of the main truss is loosened, the upright can be rotated and stored in the second receiving groove.

[0017] Compared with the prior art, the technical advantages of this utility model are as follows:

[0018] By setting up a lower suspension beam and placing the front crossbeam on it, the height of the front crossbeam is lowered to the middle of the main truss, thereby lowering the overall center of gravity of the bridge-building machine and helping to improve its anti-overturning performance. At the same time, placing the front crossbeam on the lower suspension beam makes the top of the main truss flat, making it easier to add a sunshade and rain canopy to the top of the main truss later.

[0019] The following lifting beam serves as the installation carrier, and a construction platform driven by an electric hoist is installed. During the installation, tensioning, and grouting of the steel strands in the prestressed suspension bridge, workers performing these tasks can adjust their positions independently by controlling the electric hoist on the construction platform, making the process more convenient and safer.

[0020] When the front end of the lower suspension beam extends beyond the front end of the main truss, the horizontal stroke (forward and backward) of the bridge-building machine can be extended, allowing for a longer single-segment pouring length. It also offers good adaptability; by replacing the lower suspension beams with different lengths and the corresponding connectors, the single-segment pouring length can be appropriately extended (without affecting the anti-overturning performance). A longer single-segment pouring length reduces the number of bridge pouring segments, resulting in lower construction costs and shorter construction time. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a bridge-building machine that ensures construction safety according to an embodiment of this utility model;

[0022] Figure 2 This is a three-dimensional structural schematic diagram of the bridge-building machine for construction safety in the embodiment of this utility model from another perspective.

[0023] Figure 3 yes Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0024] Figure 4 This is a three-dimensional structural diagram of the main truss and lower suspension beam in the unfolded state according to the embodiment of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the main truss and lower hanging beam in the storage state in the embodiment of this utility model;

[0026] Figure 6 This is a cross-sectional structural diagram of the main truss and lower hanging beam in the retracted state according to the embodiment of this utility model. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0028] The following explains some of the names that appear in this article:

[0029] The main truss is an important supporting structure of the bridge-building machine. The bridge-building machine usually includes two sets of main trusses in a diamond-shaped frame.

[0030] The front crossbeam 3 is a transverse beam fixed to the front end of the bridge-building machine and is used to install the template.

[0031] Figure 1 , 2 This is a three-dimensional structural diagram of the bridge-building machine for construction safety in this embodiment. The diagram only shows the structure of the bridge-building machine related to the content of this utility model, and omits parts of the bridge-building machine that are unrelated to the content of this utility model, such as templates and protective structures.

[0032] Please see Figures 1 to 6 A bridge-building machine with construction safety includes a main truss and a lower suspension beam 1 horizontally arranged in the front-rear direction of the bridge-building machine. The lower suspension beam 1 is connected to the front end of the upper horizontal bar 2 of the main truss via a connector near the front end. The rear end of the lower suspension beam 1 is connected to the middle of the front diagonal bar 9 of the main truss so that the height of the lower suspension beam 1 is located in the middle of the main truss. The front crossbeam 3 of the bridge-building machine is located at the top of the front end of the lower suspension beam 1.

[0033] After the front crossbeam 3 is installed at the front end of the lower suspension beam 1, it is connected to the formwork through a sling or other installation structure, allowing the formwork to be suspended and installed below the main truss. After the lower suspension beam 1 is installed, the installation position of the front crossbeam 3 is lowered, reducing the overall center of gravity of the bridge-building machine.

[0034] Furthermore, an electric hoist 4 is installed on the lower lifting beam 1, and the electric hoist 4 can move back and forth along the lower lifting beam 1;

[0035] The construction platform 5 is suspended below the electric hoist 4 by a steel cable.

[0036] The lower lifting beam 1 is made of I-beam steel, and each electric hoist 4 includes two motors; the output end of the first motor 41 is driven by gears and a rotating shaft to drive four (two on each side of the lower lifting beam 1) traveling wheels 42 to rotate and travel on the flange of the I-beam steel, so that the construction platform 5 moves along the lower lifting beam 1 in the front-back direction; the output end of the second motor 43 drives the drum to rotate, which can wind and unwind the steel cable, so that the construction platform 5 moves in the vertical direction.

[0037] Furthermore, it also includes a diagonal brace 6, the upper end of which is connected to the rear end of the upper horizontal bar 2, and the lower end of which is connected to the middle of the front diagonal bar 9.

[0038] The diagonal brace 6 serves as a reinforcing member, making the installation structure of the lower hanging beam 1 on the main truss more stable.

[0039] Furthermore, the connecting member includes a first suspension rod 71 and a second suspension rod 72. The lower end of the first suspension rod 71 is hinged to the upper end of the second suspension rod 72. The upper end of the first suspension rod 71 is hinged to the front end of the upper horizontal bar 2. The lower end of the second suspension rod 72 is hinged to the lower suspension beam 1 near the front end. The rear end of the lower suspension beam 1 is hinged to the middle of the front inclined bar 9, so that the lower suspension beam 1 can be rotated and parallelly stored below the front inclined bar 9.

[0040] In this embodiment, considering the convenience of folding and storing the bridge-building machine, the connecting piece is set as a two-section structure hinged by the first hanger 71 and the second hanger 72. When folding and storing, the connection between the first hanger 71 and the second hanger 72 can be rotated and folded without disassembling the connection between the connecting piece and the upper horizontal bar 2 and the lower hanging beam 1.

[0041] Of course, in some implementations, if the convenience of folding and storing the bridge-building machine is not a consideration, a single continuous boom can be used as the connector.

[0042] Furthermore, the bottom of the upper horizontal bar 2 is provided with a first receiving groove 21, and the upper end of the diagonal brace 6 is hinged to the rear end of the upper horizontal bar 2, so that after the connection between the lower end of the diagonal brace 6 and the middle part of the front diagonal bar 9 is released, the diagonal brace 6 can be rotated and stored in the first receiving groove 21.

[0043] Furthermore, the ends of the upper horizontal bar 2, lower horizontal bar 8, front diagonal bar 9, and rear diagonal bar 10 of the main truss are all hinged, so that the upper horizontal bar 2 and rear diagonal bar 10 can be rotated and stored parallel to the front diagonal bar 9 and lower horizontal bar 8.

[0044] Furthermore, the bottom of the rear diagonal brace 10 of the main truss is provided with a second receiving groove 101, and the upper end of the upright 11 of the main truss is hinged to the upper end of the rear diagonal brace 10, so that after the connection between the upright 11 and the front end of the lower horizontal bar 8 of the main truss is released, the upright 11 can be rotated and stored in the second receiving groove 101.

[0045] When the main truss and lower beam 1 need to be folded and stored during transportation, simply loosen the bolts connecting the lower end of the diagonal brace 6 to the middle of the front diagonal brace 9, and the bolts connecting the upright 11 to the front end of the lower horizontal bar 8. This allows the diagonal brace 6 to be retracted into the first receiving slot 21, and the upright 11 into the second receiving slot 101. The diagonal brace 6, upper horizontal bar 2, upright 11, and rear diagonal brace 10 are then secured with bolts to prevent them from detaching from the receiving slots. After losing the support of the diagonal brace 6 and upright 11, the front diagonal brace 9 and rear diagonal brace 10 will naturally swing downwards and flatten.

[0046] The lower horizontal bar 8 of the walkable bridge-building machine will adopt a telescopic beam structure (existing structure), and the length of the lower horizontal bar 8 can be shortened when the main truss is folded and stored.

[0047] Compared with the prior art, the technical advantages of this utility model are as follows:

[0048] By setting the lower suspension beam 1 and placing the front crossbeam 3 on the lower suspension beam 1, the height of the front crossbeam 3 is lowered to the middle of the main truss, thereby lowering the overall center of gravity of the bridge-building machine and helping to improve its anti-overturning performance. At the same time, after placing the front crossbeam 3 on the lower suspension beam 1, the top of the main truss is flat, making it easier to add a sunshade and rain canopy on the top surface of the main truss later.

[0049] The following lifting beam 1 serves as the installation carrier, and the construction platform 5 driven by the electric hoist 4 is installed. During the installation and grouting of the steel strands of the prestressed suspension bridge, the workers performing the installation and grouting of the steel strands can adjust the construction position themselves by controlling the electric hoist 4 on the construction platform 5, which is more convenient and safer.

[0050] When the front end of the lower suspension beam 1 extends beyond the front end of the main truss, the horizontal stroke (forward and backward) of the bridge-building machine can be extended, allowing for a longer single-segment casting length. It also offers good adaptability; by replacing the lower suspension beam 1 with different lengths and the corresponding connecting parts, the single-segment casting length can be appropriately extended (without affecting the anti-overturning performance). A longer single-segment casting length reduces the number of bridge segments, resulting in lower construction costs and shorter construction time.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A bridge-building machine for construction safety, comprising a main truss, characterized in that, It also includes a lower suspension beam horizontally arranged in the front-rear direction of the bridge-building machine. The lower suspension beam is connected to the front end of the upper horizontal bar of the main truss via a connector near the front end. The rear end of the lower suspension beam is connected to the middle of the front diagonal bar of the main truss, so that the height of the lower suspension beam is located in the middle of the main truss. The front crossbeam of the bridge-building machine is set at the top of the front end of the lower suspension beam.

2. The bridge-building machine for construction safety according to claim 1, characterized in that, An electric hoist is installed on the lower lifting beam, and the electric hoist can move back and forth along the lower lifting beam; A construction platform is suspended below the electric hoist by a steel cable.

3. The bridge-building machine for construction safety according to claim 1, characterized in that, It also includes a diagonal brace, the upper end of which is connected to the rear end of the upper horizontal bar, and the lower end of which is connected to the middle of the front diagonal bar.

4. The bridge-building machine for construction safety according to claim 1, characterized in that, The connector includes a first rod and a second rod. The lower end of the first rod is hinged to the upper end of the second rod. The upper end of the first rod is hinged to the front end of the upper horizontal bar. The lower end of the second rod is hinged to the lower suspension beam near the front end. The rear end of the lower suspension beam is hinged to the middle of the front inclined bar, so that the lower suspension beam can be rotated and stored parallel to the front inclined bar.

5. The bridge-building machine for construction safety according to claim 3, characterized in that, The bottom of the upper horizontal bar is provided with a first receiving groove, and the upper end of the diagonal brace is hinged to the rear end of the upper horizontal bar, so that after the connection between the lower end of the diagonal brace and the middle part of the front diagonal bar is loosened, the diagonal brace can be rotated and stored in the first receiving groove.

6. The bridge-building machine for construction safety according to claim 1, characterized in that, The ends of the upper horizontal bar, lower horizontal bar, front diagonal bar, and rear diagonal bar of the main truss are all hinged, so that the upper horizontal bar and rear diagonal bar can be rotated and retracted to be parallel to the front diagonal bar and lower horizontal bar.

7. The bridge-building machine for construction safety according to claim 1, characterized in that, The bottom of the rear diagonal member of the main truss is provided with a second receiving groove. The upper end of the upright of the main truss is hinged to the upper end of the rear diagonal member, so that after the connection between the upright and the front end of the lower horizontal member of the main truss is released, the upright can be rotated and stored in the second receiving groove.

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