Adjustable bridge box beam widening transformation component

Abstract

The utility model relates to the technical field of bridge structures, in particular to an adjustable widening and transforming component for a box girder of a bridge, which is characterized in that two widening plates are symmetrically arranged on the left side and the right side of the box girder, a bearing frame is fixedly arranged on a main supporting shaft, and a supporting frame is movably inserted into an upper port of a vertical plate of the bearing frame; the upper surface of the supporting frame abuts against the lower surface of the widening plate, the side connecting plate is fixedly arranged on the side wall of the box girder, the end, away from the main supporting shaft, of the side connecting frame is rotationally connected to the side supporting shaft in a sleeving mode through a bearing, and the end, away from the upper supporting shaft, of the upper connecting frame is rotationally arranged on the main supporting shaft through a rotating shaft; by designing a multi-point connecting structure and arranging a corresponding supporting and limiting structure, the mounting of a transformation structure based on a main body of the box girder and a flange plate of the box girder is realized, and a load-bearing structure mainly bears downward shear force, so that the load-bearing distribution of the decentralized widened transformation structure is ensured, and the construction efficiency is improved. And the box girder can stably support the transformed structure after being transformed.

Description

Technical Field

[0001] This utility model relates to the field of bridge structure technology, specifically to an adjustable bridge box girder widening and modification component. Background Technology

[0002] The box girder of a bridge is installed on the piers and serves as the load-bearing component of the bridge deck. A box girder typically consists of a main body and widened flanges on both sides of its upper surface. The box girder bears the longitudinal pressure received by the longitudinal pressure through embedded steel bars and provides shear strength. However, in some bridge box girder structures with limited design redundancy, widening of the upper surface of the box girder is necessary to accommodate the installation of non-load-bearing components such as protective structures on both sides of the bridge deck. Existing widening schemes for box girders all involve installing the widening structure based on the flanges of the box girder. This makes the flanges primarily bear the weight of the modified structure, which easily leads to cracking and breakage of the flanges. Therefore, a new widening structure design is needed to optimize its load-bearing structure and ensure the stability and robustness of the modified structure. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of existing technologies by providing an adjustable bridge box girder widening and modification component. It achieves the installation of the modification structure based on the main body and flange plates of the box girder through the design of a multi-point connection structure and the setting of corresponding support and limiting structures. This ensures that the load-bearing structure is mainly subjected to downward shear force, thereby guaranteeing the distributed load distribution of the widening and modification structure and enabling the box girder to stably support the modified structure after modification.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] It includes a box girder and flange plates, wherein the flange plates are integrally formed and installed on the side wall of the box girder, and the upper surface of the flange plates is flush with the upper surface of the box girder. It also includes:

[0006] The widening plate consists of two plates symmetrically arranged on the left and right sides of the box girder, with the upper surface of the widening plate flush with the upper surface of the box girder.

[0007] The main support shafts are arranged in groups of several, and there are two groups of main support shafts, which are respectively arranged on the left and right sides of the box girder.

[0008] A load-bearing frame, which is fixedly mounted on the main support shaft;

[0009] The support frame is movably inserted into the port of the vertical plate of the load-bearing frame, and the upper surface of the support frame abuts against the lower surface of the widening plate.

[0010] A side connecting frame, wherein the side connecting frame is spun onto the main support shaft via a rotating shaft;

[0011] Side connecting plate, wherein the side connecting plate is fixedly installed on the side wall of the box girder;

[0012] A side support shaft is fixedly mounted on a side connecting plate, and the end of the side connecting frame furthest from the main support shaft is screwed onto the side support shaft via a bearing.

[0013] Preferably, an upper connecting plate is fixedly disposed on the lower surface of the flange plate, an upper support shaft is fixedly disposed on the upper connecting plate, an upper connecting frame is spun onto the upper support shaft via a bearing, and the end of the upper connecting frame away from the upper support shaft is spun onto the main support shaft via a rotating shaft.

[0014] Preferably, a secondary support shaft is provided on the side of the main support shaft, and a side limiting frame is spun on the secondary support shaft via a rotating shaft. The other end of the side limiting frame is spun on the side support shaft via a bearing. An upper limiting frame is spun on the secondary support shaft via a bearing, and the other end of the upper limiting frame is spun on the upper support shaft via a bearing.

[0015] Preferably, a support seat is fixedly provided on the main support shaft, a limit seat is fixedly provided on the secondary support shaft, a support screw is screwed onto the support seat via a bearing, and the support screw is threaded onto the limit seat.

[0016] Preferably, a lifting screw is threaded through the load-bearing frame, and the upper end of the lifting screw is screwed onto the support frame via a bearing.

[0017] Preferably, a main gear is spun on the secondary support shaft via a bearing, an eccentric seat is fixedly mounted on the main gear, and the eccentric seat is movably abutted against the load-bearing frame. A one-way ratchet shaft unit is fixedly mounted on the side wall of the side limiting frame, and a secondary gear is fixedly mounted on the output shaft of the one-way ratchet shaft unit. The secondary gear meshes with the main gear.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] By designing a multi-point connection structure and setting corresponding support and limiting structures, it enables the installation of the modified structure based on the main body of the box girder and the flange plate of the box girder. This ensures that the load-bearing structure is mainly subjected to downward shear force, thereby guaranteeing the distributed load distribution of the widened modified structure and enabling the box girder to stably support the modified structure after modification. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 yes Figure 1 The bottom side view.

[0022] Figure 3 This is a structural schematic diagram of the middle connecting plate, the upper connecting plate, and the support frame of this utility model.

[0023] Figure 4 This is a structural schematic diagram of the middle connecting frame, the upper connecting frame, and the load-bearing frame of this utility model.

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

[0025] Box girder 1, flange plate 2, widening plate 3, main support shaft 4, load-bearing frame 5, support frame 6, side connecting frame 7, side connecting plate 8, side support shaft 9, upper connecting plate 10, upper support shaft 11, upper connecting frame 12, secondary support shaft 13, side limiting frame 14, upper limiting frame 15, support seat 16, limiting seat 17, support screw 18, lifting screw 19, main gear 20, eccentric seat 21, one-way ratchet shaft unit 22, secondary gear 23. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] like Figure 1-4 As shown, the specific implementation adopts the following technical solution:

[0028] It includes a box girder 1 and flange plates 2, wherein the flange plates 2 are integrally formed and installed on the side wall of the box girder 1, and the upper surface of the flange plates 2 is flush with the upper surface of the box girder. It also includes:

[0029] Widening plate 3, there are two widening plates 3 and they are symmetrically arranged on the left and right sides of the box girder 1. The upper surface of the widening plate 3 is flush with the upper surface of the box girder.

[0030] The main support shaft 4 is arranged in groups of several and in two groups, with the two groups of main support shafts 4 respectively arranged on the left and right sides of the box girder 1.

[0031] The load-bearing frame 5 is fixedly mounted on the main support shaft 4.

[0032] The support frame 6 is movably inserted into the port of the vertical plate of the load-bearing frame 5, and the upper surface of the support frame 6 abuts against the lower surface of the widening plate 3.

[0033] Side connecting frame 7, which is spun onto main support shaft 4 via a rotating shaft;

[0034] Side connecting plate 8, which is fixedly installed on the side wall of box girder 1;

[0035] Side support shaft 9, the side support shaft 9 is fixedly mounted on the side connecting plate 8, and the end of the side connecting frame 7 away from the main support shaft 4 is screwed onto the side support shaft 9 through a bearing;

[0036] Upper connecting frame 12 is spun onto the main support shaft 4 via bearings;

[0037] Upper connecting plate 10, which is fixedly disposed on the lower surface of flange plate 2;

[0038] The upper support shaft 11 is fixedly mounted on the upper connecting plate 10, and the end of the upper connecting frame 12 away from the main support shaft 4 is spun onto the upper support shaft 11 via a bearing;

[0039] A secondary support shaft 13 is disposed to the side of the main support shaft 4;

[0040] Side limiting frame 14, the side limiting frame 14 is spun on the auxiliary support shaft 13 by bearing, and the other end of the side limiting frame 14 is spun on the side support shaft 9 by bearing;

[0041] The upper limit bracket 15 is screwed onto the secondary support shaft 13 via a bearing, and the other end of the upper limit bracket 15 is screwed onto the upper support shaft 11 via a bearing.

[0042] Support base 16, the support base 16 is fixedly mounted on the main support shaft 4;

[0043] Limiting seat 17, which is fixedly mounted on the auxiliary support shaft 13;

[0044] The support screw 18 is screwed onto the support base 16 via a bearing, and the support screw 18 is threaded onto the limiting seat 17.

[0045] The lifting screw 19 is threaded onto the load-bearing frame 5, and the upper end of the lifting screw 19 is screwed onto the support frame 6 via a bearing.

[0046] The main gear 20 is spun onto the secondary support shaft 13 via bearings;

[0047] Eccentric seat 21, the eccentric seat 21 is fixedly mounted on the main gear 20, and the eccentric seat 21 is movably abutted against the lower surface of the load-bearing frame 5;

[0048] One-way ratchet shaft unit 22, which is fixedly mounted on the side limiting frame 14;

[0049] The auxiliary gear 23 is fixedly mounted on the output shaft of the one-way ratchet shaft unit 22, and the auxiliary gear 23 is meshed with the main gear 20.

[0050] When using this device, first adjust the span between the side connecting plate 8 and the upper connecting plate 10 so that after fixing the side connecting plate 8 to the side wall of the box girder 1 and fixing the upper connecting plate 10 to the lower surface of the flange plate 2, the side connecting plate 8 supports the main support shaft 4 through the side connecting frame 7 and the upper connecting plate 10 supports the main support shaft 4 through the upper connecting frame 12, thereby supporting the load-bearing frame 5 through the main support shaft 4, and thus the load-bearing frame 5 supports the support frame 6 on the side of the flange plate 2. Then, the widening plate 3 is erected and fixed on the support frame 6 to complete the installation, that is, the widening of the side of the box girder 1 is completed by the widening plate 3. When adjusting the span of the side connecting plate 8 and the upper connecting plate 10, the support screw 18 is rotated to push the limiting seat 17 to move, thereby adjusting the distance between the support seat 16 and the limiting seat 17, and thus adjusting the distance between the main support shaft 4 on the support seat 16 and the secondary support shaft 13 on the limiting seat 17. This causes the main support shaft 4 to pull the side connecting frame 7 and the upper connecting frame 12, and the secondary support shaft 13 to pull the side limiting frame 14 and the upper limiting frame 15. This allows the side support to be adjusted by pulling the side support shaft 9 through the side connecting frame 7 and the side limiting frame 14, and by pulling the upper support frame 6 through the upper connecting frame 12 and the upper limiting frame 15. The span between shaft 9 and upper support shaft 11, i.e., when the distance between the main support shaft 4 and the secondary support shaft 13 increases, the span between the side support shaft 9 and the upper support shaft 11 decreases; when the distance between the main support shaft 4 and the secondary support shaft 13 decreases, the span between the side support shaft 9 and the upper support shaft 11 increases. After the side connecting plate 8 and the upper connecting plate 10 are installed and the load-bearing frame 5 and the support frame 6 are raised, the secondary gear 23 is rotated and the one-way ratchet shaft unit 22 limits the rotation of the secondary gear 23 in one direction. Thus, the secondary gear 23 drives the main gear 20 to rotate, and the main gear 20 drives the eccentric seat 21 to rotate. The load-bearing frame 5 is supported by the auxiliary support shaft 13. The main support shaft 4 is connected to the side connecting plate 8 through the side connecting frame 7 and the upper connecting plate 10 through the upper connecting frame 12 to support the load-bearing frame 5. The auxiliary support shaft 13 is connected to the side connecting plate 8 through the side limiting frame 14 and the upper connecting plate 10 through the upper limiting frame 15 to support the load-bearing frame 5, thus achieving the support and fixation of the load-bearing frame 5. Then, the lifting screw 19 is rotated to push the support frame 6 to move up and down within the load-bearing frame 5 to adjust the height of the support frame 6. After the support frame 6 is adjusted, the widening plate 3 is installed on the support frame 6.

[0051] Compared with the prior art, the beneficial effects of this utility model are:

[0052] 1. This device is based on the box girder 1 and the flange plate 2 on the box girder 1. It is equipped with a side connecting plate 8 and an upper connecting plate 10. The main support shaft 4 is connected to the side connecting plate 8 through the side connecting frame 7. The main support shaft 4 is connected to the upper connecting plate 10 through the upper connecting frame 12. Then, the load-bearing frame 5 is installed through the main support shaft 4, and the support frame 6 is installed on the load-bearing frame 5. The widening plate 3 is installed through the support frame 6, so that the widening plate 3 is installed on the side of the flange plate 2 on the box girder 1, thereby widening the box girder 1.

[0053] 2. This device has a secondary support shaft 13 set on the side of the main support shaft 4, and then the secondary support shaft 13 is connected to the side connecting plate 8 through the side limiting frame 14, and the secondary support shaft 13 is connected to the upper connecting plate 10 through the upper limiting frame 15. This realizes the span adjustment and limiting between the side connecting plate 8 and the upper connecting plate 10, thereby realizing the adjustment of the position between the side connecting plate 8 and the upper connecting plate 10 according to the different structures of the box girder 1 and the flange plate 2, so as to realize the erection of the load-bearing frame 5.

[0054] 3. This device has a spur gear with an eccentric seat 21 on the secondary support shaft 13, and a secondary gear 23 on the side limiting frame 14 through a one-way ratchet shaft unit 22. This allows the secondary support shaft 13 to serve as a support, and the eccentric seat 21 to support the load-bearing frame 5. This allows the main support shaft 4 and the secondary support shaft 13 to support and reinforce the load-bearing frame 5.

[0055] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable bridge box girder widening and modification component, comprising a box girder (1) and a flange plate (2), wherein the flange plate (2) is integrally formed on the side wall of the box girder (1), and the upper surface of the flange plate (2) is flush with the upper surface of the box girder (1); characterized in that, It also includes: The widening plate (3) consists of two plates symmetrically arranged on the left and right sides of the box girder (1), with the upper surface of the widening plate (3) flush with the upper surface of the box girder (1). Main support shaft (4), the main support shaft (4) is arranged in groups of several and in two groups, and the two groups of main support shaft (4) are respectively arranged on the left and right sides of the box girder (1); The load-bearing frame (5) is fixedly mounted on the main support shaft (4); The support frame (6) is movably inserted into the port of the vertical plate of the load-bearing frame (5), and the upper surface of the support frame (6) abuts against the lower surface of the widening plate (3). Side connecting frame (7), said side connecting frame (7) is spun onto the main support shaft (4) via a rotating shaft; Side connecting plate (8), the side connecting plate (8) is fixedly installed on the side wall of the box girder (1); Side support shaft (9), the side support shaft (9) is fixedly mounted on the side connecting plate (8), and the end of the side connecting frame (7) away from the main support shaft (4) is screwed onto the side support shaft (9) by a bearing.

2. The adjustable bridge box girder widening and modification component according to claim 1, characterized in that: An upper connecting plate (10) is fixedly provided on the lower surface of the flange plate (2). An upper support shaft (11) is fixedly provided on the upper connecting plate (10). An upper connecting frame (12) is spun on the upper support shaft (11) through a bearing. The end of the upper connecting frame (12) away from the upper support shaft (11) is spun on the main support shaft (4) through a rotating shaft.

3. The adjustable bridge box girder widening and modification component according to claim 2, characterized in that: A secondary support shaft (13) is provided on the side of the main support shaft (4). A side limit frame (14) is spun on the secondary support shaft (13) via a rotating shaft. The other end of the side limit frame (14) is spun on the side support shaft (9) via a bearing. An upper limit frame (15) is spun on the secondary support shaft (13) via a bearing. The other end of the upper limit frame (15) is spun on the upper support shaft (11) via a bearing.

4. The adjustable bridge box girder widening and modification component according to claim 3, characterized in that: A support seat (16) is fixedly installed on the main support shaft (4), and a limit seat (17) is fixedly installed on the secondary support shaft (13). A support screw (18) is screwed onto the support seat (16) through a bearing, and the support screw (18) is threaded onto the limit seat (17).

5. The adjustable bridge box girder widening and modification component according to claim 4, characterized in that: The load-bearing frame (5) is threaded with a lifting screw (19), and the upper end of the lifting screw (19) is screwed onto the support frame (6) via a bearing.

6. The adjustable bridge box girder widening and modification component according to claim 5, characterized in that: A main gear (20) is spun on the secondary support shaft (13) via a bearing. An eccentric seat (21) is fixedly mounted on the main gear (20), and the eccentric seat (21) is movably abutted against the load-bearing frame (5). A one-way ratchet shaft unit (22) is fixedly mounted on the side wall of the side limiting frame (14). A secondary gear (23) is fixedly mounted on the output shaft of the one-way ratchet shaft unit (22), and the secondary gear (23) meshes with the main gear (20).

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