Roller support system of cantilever horizontal-pushing bridge

Abstract

The utility model belongs to the technical field of assembly type steel bridges, and particularly relates to a roller support system of a cantilever horizontal pushing bridge. The utility model discloses a roller support system of a cantilever horizontal pushing bridge, which can conveniently realize the lifting of the height of a roller and meet the erection requirements of bridges with different heights. The innovation improves the adaptability of the roller bracket to a bridging site, and further improves the efficiency of bridge erection. The roller support system further has the advantages of being simple in structure, easy to machine and convenient and fast to install. The roller bracket system comprises a plurality of groups of bracket roller units which are longitudinally arranged along the cantilever horizontal-pushing bridge, and the bracket roller units are connected through connecting beams; the bracket roller unit comprises two triangular bracket structures which are transversely arranged along the cantilever horizontal-pushing bridge, and the triangular bracket structures are connected through roller beams; the lifting mechanism is used for adjusting the height of the roller beams and the cantilever horizontal pushing bridge above the roller beams.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated steel bridge technology, specifically relating to a roller support system for a cantilever flat-push bridge. Background Technology

[0002] Currently, steel bridges for military use are typically erected using a cantilevered horizontal pushing method. In this process, after the bridge components are assembled on rollers, the bridge is pushed to the opposite bank by overcoming the friction of the rollers. However, existing bridge rollers (including horizontal and rocker rollers) lack height-adjustable support systems, making it impossible to raise or lower the rollers during erection, which poses a challenge to the construction of the steel bridge.

[0003] Furthermore, bridge construction requires a high degree of terrain flatness. When the installation height of bridges varies at different locations, height adjustment is typically achieved by placing multiple shims at the bottom of the bridge components. However, due to the varying heights of the shims, this method cannot accurately control the lifting height of the bridge. During the bridge raising process, manual lifting and adjustment of the bridge are still necessary, which not only consumes manpower and time but also reduces the efficiency of the bridge-laying rollers. Utility Model Content

[0004] In view of this, this utility model discloses a roller support system for cantilevered bridge erection. This roller support system can easily raise and lower the roller height to meet the erection requirements of bridges of different heights. This innovation improves the adaptability of the roller support to the bridge erection site and further improves the efficiency of bridge erection. In addition, this roller support system also features a simple structure, ease of processing, and convenient installation.

[0005] A roller support system for a cantilever horizontal push bridge includes: several sets of bracket roller units arranged longitudinally along the cantilever horizontal push bridge, and the bracket roller units are connected by connecting beams.

[0006] The bracket roller unit includes two triangular support structures arranged laterally along the cantilever flat push bridge, and each of the triangular support structures is connected by a roller beam.

[0007] The triangular support structure includes a bottom horizontal bar and two vertically opposite supporting columns above it. A lifting mechanism is provided between the two supporting columns, and the lifting mechanisms of the two triangular support structures are connected by the roller beam.

[0008] Several roller groups are evenly arranged on the roller beam along the transverse direction of the cantilever flat-push bridge, and each roller group includes several rollers.

[0009] The lifting mechanism is used to adjust the height of the plurality of roller beams and the cantilevered horizontal push bridge above them.

[0010] Preferably, the lifting mechanism includes a jack, a jack support connected below, and a jack connector connected above; the jack support is above the bottom crossbar, and the jack connector is connected to the roller beam.

[0011] Preferably, the jack connector includes an inverted U-shaped structure and support plates extending downward from the vertical plates on both sides of the inverted U-shaped structure, and the inverted U-shaped structure and the support plates are rotatably connected by a rotating shaft;

[0012] A support groove is provided in the inverted U-shaped structure facing the support arm of the jack, which is used to limit the support arm of the jack.

[0013] Preferably, the support column is provided with a plurality of positioning holes along the height direction, and positioning pins are inserted into the positioning holes to change the height of the lifting mechanism relative to the bottom crossbar.

[0014] Preferably, several roller groups are evenly arranged on the roller beam along the transverse direction of the cantilever flat-push bridge;

[0015] Several grooves are evenly arranged circumferentially on the rollers of the roller assembly at both ends of the roller beam, and a locking member is provided on the roller beam, which restricts the rotation of the rollers through the grooves.

[0016] Beneficial effects:

[0017] (i) The lifting mechanism of this utility model can accurately adjust the height of the cantilever flat-push bridge, solving the technical problem that existing bridge rollers (including flat rollers and rock rollers) lack an adjustable support system and cannot accurately adjust the bridge height.

[0018] (II) The jack connector in the lifting mechanism of this utility model includes an inverted U-shaped structure and a support plate. A support groove is provided in the inverted U-shaped structure facing the jack support arm. The center line of the support groove can coincide with the center line of the jack connector. Combined with the rotational connection between the inverted U-shaped structure and the support plate, it prevents the support arm from sliding off the jack connector and further enhances the fixation between the jack support arm and the jack connector.

[0019] (III) The jack support of this utility model has a height adjustable feature relative to the bottom crossbar. Based on the height adjustment of the roller support system by the jack, the height of the roller beam is further increased, thus expanding the applicable range of the roller support system.

[0020] (iv) Several limiting grooves are evenly arranged along the circumference of the roller of this utility model. Combined with the locking parts set on the roller beam, they are used to limit the rotation of the roller and improve the controllability of the bridge components being pushed on the roller assembly. Attached Figure Description

[0021] Figure 1 This is a front view of a roller support system for a cantilevered horizontal push bridge according to this utility model;

[0022] Figure 2 This is a side view of a roller support system for a cantilevered horizontal push bridge according to this utility model;

[0023] Figure 3 This is a top view of a roller support system for a cantilevered horizontal push bridge according to this utility model;

[0024] Figure 4 This is a side view of the triangular support structure of the roller support system for a cantilever flat-push bridge according to this utility model;

[0025] Figure 5 This is a front view of the triangular support structure of the roller support system for a cantilever flat-push bridge according to this utility model;

[0026] Figure 6 This is a schematic diagram of the locking component and limiting groove structure of the roller support system of a cantilever flat-push bridge according to this utility model;

[0027] Figure 7 This is a schematic diagram of the jack support of a roller support system for a cantilever flat-push bridge according to the present invention, which changes its height through a positioning pin.

[0028] Figure 8 This is a schematic diagram of the jack connector structure of a roller support system for a cantilever flat-push bridge according to this utility model;

[0029] Figure 9 This is a side view of the roller beam of a roller support system for a cantilever flat-push bridge according to this utility model;

[0030] Figure 10 This is a top view of the roller beam of a roller support system for a cantilever flat-push bridge according to this utility model;

[0031] Figure 11 This is a schematic diagram of the actual application of the roller support system of the cantilever flat-push bridge according to this utility model;

[0032] Among them, 1-bottom crossbar, 2-triangular support structure, 3-crossbeam, 4-roller beam, 5-connecting beam, 6-jack, 7-jack support, 8-positioning pin, 9-roller assembly, 10-positioning tenon, 11-support arm, 12-jack connector, 13-support column, 14-limiting groove, 15-rotating shaft, 16-locking piece, 17-base, 18-inverted U-shaped structure, 19-support plate, 20-support groove. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] like Figure 1-11 As shown, the length direction of the cantilevered horizontal bridge above the roller support system is first defined as longitudinal, and the width direction as transverse. The roller support system of this cantilevered horizontal bridge includes several sets of bracket roller units arranged along the longitudinal direction of the cantilevered horizontal bridge, and adjacent bracket roller units are connected by several connecting beams 5. For example... Figure 3 As shown, as an example, the two sets of bracket roller units are connected as one unit by two connecting beams 5 for the erection of cantilever flat-push bridges.

[0035] The bracket roller unit includes two triangular support structures 2 arranged laterally along the cantilever flat-push bridge, and the two triangular support structures 2 are connected by roller beams 4.

[0036] like Figure 1 As shown, the triangular support structure 2 includes a bottom horizontal bar 1 and two vertically opposite support columns 13 above it. A lifting mechanism is provided between the two support columns 13. The lifting mechanisms of the two triangular support structures 2 are connected by the roller beam 4. Several roller groups 9 are evenly arranged above the roller beam 4 along the transverse direction of the cantilever flat-push bridge. Each roller group 9 includes several rollers. The lifting mechanism is used to adjust the height of the rollers and the cantilever flat-push bridge above them.

[0037] Furthermore, the lifting mechanism includes a jack 6 and a jack support 7 connected below it, and a jack connector 12 connected above it; the bottom crossbar 1 is connected below the jack support 7, and the jack connector 12 is connected to the roller beam 4. When the jack 6 drives the jack connector 12 to rise, the roller beam 4 rises together. Since the jack support arm 11 can rise or fall under the drive of the hydraulic cylinder, the support arm 11 drives the roller beam 4 to rise or fall through the jack connector 12, thereby improving the accuracy of bridge height adjustment.

[0038] Furthermore, the bottom crossbar 1 is fixed to its base 17 at its bottom via a positioning tenon 10, which further provides stability to the roller support system.

[0039] Regarding adjusting the bridge height, several positioning holes are provided along the height direction on the supporting column 13. The positioning holes on the two triangular support structures 2 are in the same position and correspond one-to-one. Positioning pins 8 are inserted into the positioning holes to change the height of the lifting mechanism relative to the bottom crossbar 1. Specifically, as... Figure 7As shown, before adjusting the height of the jack connector 12, the height of the jack support 7 relative to the bottom crossbar 1 can be adjusted first. This involves inserting the positioning pin 8, used to position the height of the jack support 7, into the positioning hole, and then placing the bottom of the jack support 7 onto the positioning pin 8 to achieve the purpose of raising the jack support 7. Furthermore, by adding more positioning pins 8, the height of the jack connector 12 relative to the bottom crossbar 1 can be further changed, solving the problem that operators can individually adjust the height of the jack connector 12 in each triangular support structure 2 when there are differences in installation height at different locations during the erection of the cantilever flat-push bridge.

[0040] Furthermore, during the individual adjustment of the height of the jack connector 12 in each triangular support structure 2, it is also necessary to address the issue of ensuring sufficient contact between the jack connector 12 and the jack support arm 11. Therefore, the jack connector 12 in this roller support system includes an inverted U-shaped structure 18 at the top and support plates 19 extending downwards from the vertical plates on both sides of the inverted U-shaped structure. The support plates 19 are connected to the roller beam 4. The inverted U-shaped structure 18 and the support plates 19 are rotatably connected via a pivot 15 parallel to the bottom crossbar 1. Based on the rotational connection, a support groove 20 is provided on the inverted U-shaped structure 18 towards the support arm 11 of the jack. The center line of the support groove 20 can coincide with the center line of the jack connector 12, so that the top end of the jack support arm 11 can be fully confined in the support groove 20, preventing the support arm 11 from sliding off the jack connector 12. Combined with the rotational connection between the inverted U-shaped structure 18 of the jack connector 12 and the support plate 19, the degree of fixation between the jack support arm 11 and the jack connector 12 is further enhanced.

[0041] Regarding the roller beam 4, several roller sets 9 are evenly arranged above it along the transverse direction of the cantilever flat-push bridge erection; during bridge erection, the cantilever flat-push bridge erection rolls on the rollers of the roller sets 9. Several limiting grooves 14 are evenly arranged along the circumference of the rollers on the roller sets 9 at both ends of the roller beam 4. Locking members 16 are provided on the roller beam 4 at positions opposite to the limiting grooves 14. The locking members 16 restrict the rotation of the rollers by cooperating with the limiting grooves 14, preventing the bridge components on the rollers from being unable to be stationary on the roller beam 4 due to gravity or other reasons, thereby improving the controllability of the pushing process of the bridge components on the roller sets 9.

[0042] As an example, all components of this roller support system are made of aluminum alloy, which is lightweight and durable. The components are easy to source locally, making them convenient for processing, installation, and application.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A roller support system for a cantilevered horizontal push bridge, characterized in that, It includes several sets of bracket roller units arranged longitudinally along the cantilever flat-push bridge, and each set of bracket roller units is connected by a connecting beam (5). The bracket roller unit includes two triangular support structures (2) arranged laterally along the cantilever flat push bridge, and each of the triangular support structures (2) is connected to each other by a roller beam (4); The triangular support structure (2) includes a bottom horizontal bar (1) and two vertically opposite support columns (13) above it. A lifting mechanism is provided between the two support columns (13), and the lifting mechanisms of the two triangular support structures (2) are connected by the roller beam (4). Several roller groups (9) are evenly arranged on the roller beam (4) along the transverse direction of the cantilever flat-push bridge, and each roller group (9) includes several rollers; The lifting mechanism is used to adjust the height of the plurality of roller beams (4) and the cantilevered horizontal push bridge above them.

2. The roller support system for a cantilevered horizontal push bridge according to claim 1, characterized in that, The lifting mechanism includes a jack (6) and a jack support (7) connected below, and a jack connector (12) connected above it; the jack support (7) is above the bottom crossbar (1), and the jack connector (12) is connected to the roller beam (4).

3. The roller support system for a cantilevered horizontal push bridge according to claim 2, characterized in that, The jack connector (12) includes an inverted U-shaped structure (18) and a support plate (19) extending downward from the vertical plates on both sides of the inverted U-shaped structure (18). The inverted U-shaped structure (18) and the support plate (19) are rotatably connected by a pivot (15). A support groove (20) is provided on the inverted U-shaped structure (18) in the direction of the support arm (11) of the jack (6) to limit the support arm (11) of the jack (6).

4. The roller support system for a cantilevered horizontal push bridge according to claim 1, characterized in that, Several positioning holes are provided on the support column (13) along the height direction. By inserting positioning pins (8) into the positioning holes, the height of the lifting mechanism relative to the bottom crossbar (1) can be changed.

5. A roller support system for a cantilevered horizontal push bridge according to any one of claims 1-4, characterized in that, Several roller groups (9) are evenly arranged on the roller beam (4) along the transverse direction of the cantilever flat-push bridge; Several grooves (14) are evenly arranged circumferentially on the rollers of the roller assembly (9) at both ends of the roller beam (4). A locking member (16) is provided on the roller beam (4), and the locking member (16) restricts the rotation of the rollers through the grooves (14).

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