Roller support system of cantilever horizontal-pushing bridge

Abstract

The invention 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 invention 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] The invention belongs to the technical field of assembled steel bridges, and in particular relates to a roller bracket system for cantilever push bridge erection. Background Art

[0002] At present, war-ready steel bridges are usually erected by cantilever push-and-pull methods. In this process, after the bridge components are assembled on the rollers, the bridge is pushed to the other side by overcoming the friction of the rollers. However, the existing bridge rollers (including flat rollers and rock rollers) lack a height-adjustable bracket system, resulting in the inability to adjust the height of the rollers during the erection process, which brings difficulties to the erection of steel bridges.

[0003] In addition, the construction of bridges requires high terrain flatness. When the installation height of bridges at different locations is different, the height is usually adjusted by setting multiple pads at the bottom of the bridge components. However, due to the different heights of the pads, this method cannot accurately control the lifting height of the bridge. In the process of raising the bridge, the bridge still needs to be manually lifted for adjustment, which not only consumes manpower and time, but also reduces the efficiency of the bridge roller laying. Summary of the invention

[0004] In view of this, the present invention discloses a roller support system for cantilever push bridge erection, which can easily realize the lifting and lowering of 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, the roller support system also has the characteristics of simple structure, easy processing and convenient installation.

[0005] A roller support system for a cantilever push bridge comprises: a plurality of groups of bracket roller units arranged longitudinally along the cantilever push bridge, and each group of bracket roller units is connected by a connecting beam;

[0006] The bracket roller unit comprises two triangular support structures arranged transversely along the cantilever push bridge, and each of the triangular support structures is connected by a roller beam;

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

[0008] A plurality of roller groups are evenly arranged on the roller beam along the transverse direction of the cantilever push bridge, and each roller group includes a plurality of rollers;

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

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

[0011] Preferably, the jack connecting member comprises an inverted U-shaped structure and a support plate extending downward from two vertical plates on both sides of the inverted U-shaped structure, and the inverted U-shaped structure is rotatably connected to the support plate via a rotating shaft;

[0012] A supporting groove is provided in the inverted U-shaped structure in the direction of the supporting arm of the jack, for limiting the supporting arm of the jack.

[0013] Preferably, a plurality of positioning holes are provided on the support column 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 cross bar.

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

[0015] A plurality of grooves are evenly arranged on the rollers of the roller group at both ends of the roller beam along the circumferential direction, and a locking piece is arranged on the roller beam, and the locking piece limits the rotation of the roller through the groove.

[0016] Beneficial effects:

[0017] (i) The lifting mechanism of the present invention can realize accurate adjustment of the height of the cantilever push bridge, solving the technical problems that the existing bridge rollers (including flat rollers and rockers) lack a support system that can adjust the height, and the bridge height cannot be accurately adjusted.

[0018] (ii) The jack connecting member in the lifting mechanism of the present invention comprises an inverted U-shaped structure and a support plate. A support groove is provided in the inverted U-shaped structure toward the jack support arm. The center line of the support groove can coincide with the center line of the jack connecting member. Combined with the rotational connection relationship between the inverted U-shaped structure and the support plate, the support arm is prevented from sliding off the jack connecting member, thereby further enhancing the degree of fixation between the jack support arm and the jack connecting member.

[0019] (III) The jack support of the present invention has a height-adjustable feature relative to the bottom cross bar. On the basis of the jack adjusting the height of the roller bracket system, the height of the roller beam is further increased, thereby expanding the applicable scope of the roller bracket system.

[0020] (iv) The roller of the present invention is provided with a plurality of limiting grooves evenly arranged along the circumference, which, combined with the locking piece arranged on the roller beam, are used to limit the rotation of the roller, thereby improving the controllability of the process of pushing the bridge component on the roller group. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of a roller support system for cantilever push bridge erection of the present invention;

[0022] Figure 2 It is a side view of a roller support system for cantilever push bridge erection of the present invention;

[0023] Figure 3 It is a top view of a roller support system for cantilever push bridge erection of the present invention;

[0024] Figure 4 It is a side view of a triangular support structure of a roller support system for cantilever push bridge erection of the present invention;

[0025] Figure 5 It is a front view of a triangular support structure of a roller support system for a cantilever push bridge of the present invention;

[0026] Figure 6 It is a schematic diagram of the locking member and the limiting groove structure of a roller support system of a cantilever push bridge of the present invention;

[0027] Figure 7 It is a schematic diagram of a jack support of a roller support system of a cantilever push bridge of the present invention changing its height through a positioning pin;

[0028] Figure 8 It is a schematic structural diagram of a jack connection member of a roller support system of a cantilever push bridge of the present invention;

[0029] Fig. 9 It is a side view of a roller beam of a roller support system of a cantilever push bridge of the present invention;

[0030] Fig.10 It is a top view of a roller beam of a roller support system of a cantilever push bridge of the present invention;

[0031] Fig.11 It is a schematic diagram of the actual application of a roller support system for cantilever push bridge erection of the present invention;

[0032] Among them, 1-bottom cross bar, 2-triangular support structure, 3-cross beam, 4-roller beam, 5-connecting beam, 6-jack, 7-jack support, 8-locating pin, 9-roller group, 10-locating 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 DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0034] like Figure 1-11 As shown, first define the length direction of the cantilever push bridge above the roller support system as the longitudinal direction and the width direction as the transverse direction. The roller support system of the cantilever push bridge includes a plurality of bracket roller units arranged along the longitudinal direction of the cantilever push bridge, and adjacent bracket roller units are connected by a plurality of connecting beams 5. Figure 3 As shown, as an example, two groups of bracket roller units are connected as a whole through two connecting beams 5 for erecting a cantilever push bridge.

[0035] The bracket roller unit comprises two triangular support structures 2 arranged transversely along the cantilever push bridge, and the two triangular support structures 2 are connected by a roller beam 4.

[0036] like Figure 1 As shown, the triangular support structure 2 includes a bottom cross bar 1 and two supporting columns 13 vertically oppositely arranged above it, a lifting mechanism is provided between the two supporting columns 13, the lifting mechanisms of the two triangular support structures 2 are connected through the roller beam 4, and a plurality of roller groups 9 are evenly arranged along the transverse direction of the cantilever push bridge above the roller beam 4, each of the roller groups 9 includes a plurality of rollers; the lifting mechanism is used to adjust the height of the plurality of rollers and the cantilever push bridge above them.

[0037] Furthermore, the lifting mechanism includes a jack 6 and a jack support 7 connected below, and a jack connector 12 connected above; the bottom cross bar 1 is connected to the jack support 7 below, 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 support arm 11 of the jack can rise or fall under the drive of the 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 cross bar 1 is fixedly connected to the base 17 at the bottom thereof via the positioning tenon 10, thereby further providing stability to the roller bracket system.

[0039] Regarding the adjustment of the bridge height, a plurality of positioning holes are provided on the support column 13 along the height direction, and the positioning holes provided on the two triangular support structures 2 are at the same position and correspond to each other. By inserting positioning pins 8 into the positioning holes, the height of the lifting mechanism relative to the bottom crossbar 1 can be changed. Specifically, Figure 7As shown, before adjusting the height of the jack connector 12, the height of the jack support 7 relative to the bottom cross bar 1 can be adjusted first. That is, the positioning pin 8 used to locate the height of the jack support 7 is inserted into the positioning hole, and then the bottom of the jack support 7 is overlapped on the positioning pin 8 to achieve the purpose of lifting the jack support 7. On this basis, the height of the jack connector 12 relative to the bottom cross bar 1 can be further changed by adding the positioning pin 8, which solves the problem that the operator can individually adjust the height of the jack connector 12 in each triangular support structure 2 when there are differences in the installation heights of different positions of the cantilever push bridge.

[0040] Furthermore, in the process of adjusting the height of the jack connector 12 in each triangular support structure 2 individually, it is also necessary to solve the problem that the jack connector 12 can fully contact the jack support arm 11. Therefore, the jack connector 12 in the roller support system includes an inverted U-shaped structure 18 at the top and support plates 19 extending downward from the vertical plates on both sides of the inverted U-shaped structure, and 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 through a rotating shaft 15 parallel to the bottom crossbar 1. On the basis of the rotational connection, a support groove 20 is provided in the inverted U-shaped structure 18 in the direction of the support arm 11 of the jack, and the center line of the support groove 20 can coincide with the center line of the jack connecting piece 12, so that the top end of the jack support arm 11 can be fully limited in the support groove 20 to prevent the support arm 11 from slipping out of the jack connecting piece 12. Combined with the rotational connection relationship between the inverted U-shaped structure 18 of the jack connecting piece 12 and the support plate 19, the degree of fixation between the jack support arm 11 and the jack connecting piece 12 is further enhanced.

[0041] Regarding the roller beam 4, a plurality of roller groups 9 are evenly arranged on the roller beam 4 along the transverse direction of the cantilever push bridge; when erecting a bridge, the cantilever push bridge rolls on the rollers of the roller groups 9. A plurality of limiting grooves 14 are evenly arranged on the rollers of the roller groups 9 at both ends of the roller beam 4 along the circumference of the rollers, and a locking member 16 is provided on the roller beam 4 at a position opposite to the limiting groove 14. The locking member 16 cooperates with the limiting groove 14 to limit the rotation of the roller, thereby preventing the bridge component on the roller from being unable to be stationary on the roller beam 4 due to gravity and other reasons, thereby improving the controllability of the process of pushing the bridge component on the roller group 9.

[0042] As an example, each component in the roller bracket system is made of aluminum alloy, which is light and durable. Each component can be easily obtained from local materials, which is convenient for processing, installation and application promotion.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A roller support system for cantilever push bridge erection, characterized in that: It comprises a plurality of groups of bracket roller units arranged longitudinally along the cantilever push bridge, and each group of bracket roller units is connected by a connecting beam (5); The bracket roller unit comprises two triangular support structures (2) arranged transversely along the cantilever push bridge, and each of the triangular support structures (2) is connected via a roller beam (4); The triangular support structure (2) comprises a bottom cross bar (1) and two supporting columns (13) arranged vertically opposite to each other above the bottom cross bar (1), a lifting mechanism is arranged between the two supporting columns (13), and the lifting mechanisms of the two triangular support structures (2) are connected via the roller beam (4). A plurality of roller groups (9) are evenly arranged on the roller beam (4) along the transverse direction of the cantilever push bridge, and each of the roller groups (9) includes a plurality of rollers; The lifting mechanism is used to adjust the height of the plurality of roller beams (4) and the cantilever push bridge above them.

2. The roller support system for cantilever push bridge erection according to claim 1, characterized in that: The lifting mechanism comprises a jack (6), a jack support (7) connected below, and a jack connecting piece (12) connected above; the jack support (7) is above the bottom cross bar (1), and the jack connecting piece (12) is connected to the roller beam (4).

3. The roller support system for cantilever push bridge erection according to claim 2, characterized in that: The jack connecting member (12) comprises an inverted U-shaped structure (18) and a support plate (19) extending downward from two vertical plates on both sides of the inverted U-shaped structure (18), and the inverted U-shaped structure (18) and the support plate (19) are rotatably connected via a rotating shaft (15); A support groove (20) is provided in the inverted U-shaped structure (18) in the direction of the support arm (11) of the jack (6), and is used to limit the support arm (11) of the jack (6).

4. The roller support system for cantilever push bridge erection according to claim 1, characterized in that: A plurality of positioning holes are provided on the support column (13) along the height direction, and positioning pins (8) are inserted into the positioning holes to change the height of the lifting mechanism relative to the bottom cross bar (1).

5. A roller support system for cantilever push bridge erection according to any one of claims 1 to 4, characterized in that: A plurality of roller groups (9) are evenly arranged on the roller beam (4) along the transverse direction of the cantilever push bridge; A plurality of grooves (14) are evenly arranged along the circumferential direction on the rollers of the roller group (9) at both ends of the roller beam (4), and a locking piece (16) is provided on the roller beam (4), and the locking piece (16) limits the rotation of the roller through the groove (14).

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