CN216074768U - Continuous rigid frame bridge cantilever beam tip butt joint fastening structure - Google Patents
Continuous rigid frame bridge cantilever beam tip butt joint fastening structure Download PDFInfo
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- CN216074768U CN216074768U CN202122084599.XU CN202122084599U CN216074768U CN 216074768 U CN216074768 U CN 216074768U CN 202122084599 U CN202122084599 U CN 202122084599U CN 216074768 U CN216074768 U CN 216074768U
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Abstract
The utility model relates to the field of bridge engineering construction, in particular to a continuous rigid frame bridge cantilever beam end butt joint fastening structure which comprises cantilever beams, wherein a transition butt joint mechanism is arranged between every two adjacent cantilever beams, and comprises a movable beam and a butt joint fastening mechanism; the end parts of the cantilever beams are provided with positioning bulges extending outwards, the upper ends of the positioning bulges are provided with upper inclined planes, and the lower ends of the positioning bulges are provided with lower inclined planes; the movable beams are horizontally lapped between two adjacent cantilever beams; the butt joint fastening mechanism comprises the tensioning chain chains arranged at the lower ends of the two cantilever beams and the fastening mechanism arranged at the lower end of the movable beam, the structure of the butt joint fastening mechanism is simple, the movable beam is arranged between the two adjacent cantilever beams, pouring construction is not needed to be carried out at the end part of each cantilever beam, the construction of a continuous rigid frame bridge is facilitated, the movable beam is conveniently and quickly and stably limited and positioned during installation, the stability of the movable beam in the continuous rigid frame bridge is ensured, and the workload of bridge engineering construction is reduced.
Description
Technical Field
The utility model relates to the field of bridge engineering construction, in particular to a continuous rigid frame bridge cantilever beam end butt joint fastening structure.
Background
The existing small and medium span bridges mostly adopt simply supported beams or continuous rigid frame bridges, and compared with the similar bridges (such as continuous beam bridges and T-shaped rigid frame bridges), the multi-span rigid frame bridge keeps the property of the continuous beam of the upper structure, and has the advantages of large spanning capacity, small construction difficulty, smooth driving, simple and convenient maintenance and lower manufacturing cost. The multi-span continuous rigid frame bridge is provided with hinges in the main span, the span on two sides is a continuous system, and the weight of the side span continuous beam can be utilized to make the T structure into cantilevers with different lengths so as to increase the span of the main span.
When the end parts of the cantilever beams are butt-jointed to build facilities, the facilities are built in a cast-in-place mode in the prior art, a reinforcing steel bar frame and a template are built between two adjacent cantilever beams, and then a mixture is injected to be poured, so that the construction amount is large, the construction time is prolonged, and inconvenience is caused.
Disclosure of Invention
The utility model aims to provide a continuous rigid frame bridge cantilever beam end butt joint fastening structure.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the end part butt joint fastening structure of the cantilever beams of the continuous rigid frame bridge comprises the cantilever beams arranged on a bridge pier, a transition butt joint mechanism is arranged between every two adjacent cantilever beams, and the transition butt joint mechanism comprises a movable beam and a butt joint fastening mechanism;
the end parts of the cantilever beams are provided with positioning bulges extending outwards, the upper ends of the positioning bulges are provided with upper inclined planes, and the lower ends of the positioning bulges are provided with lower inclined planes; the movable beams are horizontally lapped between two adjacent cantilever beams, and two end parts of the lower end surfaces of the movable beams are attached to the corresponding upper inclined surfaces;
the butt joint fastening mechanism comprises a tensioning chain arranged at the lower ends of the two cantilever beams and a fastening mechanism arranged at the lower end of the movable beam, one end of the tensioning chain is connected with the lower end of one of the cantilever beams, the other end of the tensioning chain is connected with the lower end of the other adjacent cantilever beam, the fastening mechanism is used for stably positioning the movable beam between the two cantilever beams, and the fastening end of the fastening mechanism is attached to the lower inclined surface of the lower end of the corresponding positioning protrusion;
the upper end face of the cantilever beam and the upper end face of the movable beam are in the same horizontal plane.
Preferably, the fastening mechanism comprises a synchronous adjusting mechanism, a reversing transmission mechanism and a bidirectional linear positioning mechanism;
the synchronous adjusting mechanism is horizontally arranged at the lower end of the movable beam, the two-way linear positioning mechanisms are arranged at the lower end of the movable beam side by side and are vertically distributed with the synchronous adjusting mechanism, the reversing transmission mechanisms correspond to the two-way linear positioning mechanisms one by one, the power input end of each reversing transmission mechanism is connected with the power output end of the synchronous adjusting mechanism, and the power input end of each two-way linear positioning mechanism is connected with the power output end of each reversing transmission mechanism;
the end part of the bidirectional linear positioning mechanism is attached to the lower inclined plane at the lower end of the corresponding positioning bulge.
Preferably, the synchronous adjusting mechanism comprises an adjusting shaft and a first bevel gear, the adjusting shaft is horizontally and rotatably arranged at the lower end of the movable beam, the plurality of bevel gears are arranged on the adjusting shaft in parallel, and the first bevel gears correspond to the reversing transmission mechanisms one by one;
each reversing transmission mechanism comprises a second bevel gear, a short shaft, a third bevel gear and a fourth bevel gear, the short shaft is vertically and rotatably installed at the lower end of the movable beam, the second bevel gear is installed at the upper end of the short shaft and meshed with the corresponding first bevel gear, the third bevel gear is installed at the lower end of the short shaft, the fourth bevel gear is installed on the bidirectional linear positioning mechanism, and the third bevel gear is meshed with the fourth bevel gear.
Preferably, every two-way sharp positioning mechanism all includes two-way lead screw, slide, drive support and top briquetting, two-way lead screw horizontal rotation installs the lower extreme at the walking beam, bevel gear four installs on two-way lead screw, two slide symmetry screw thread is installed on two-way lead screw, and with walking beam sliding fit, top briquetting through drive support with correspond the slide is connected, the terminal surface and the lower bevel phase-match of top briquetting, and the terminal surface and the lower bevel in close contact with of top briquetting.
Preferably, the end parts of the upper end surfaces of the cantilever beams are provided with limit grooves side by side, the end parts of the movable beams are provided with fixture blocks matched with the limit grooves, and the fixture blocks are arranged at the positions of the two side ends of the movable beams.
Preferably, the contact parts of the movable beam, the cantilever beam and the upper inclined plane are provided with shock-absorbing rubber pads.
Preferably, the contact part of the end face of the jacking pressing block and the lower inclined plane is provided with a damping rubber pad.
Has the advantages that: when the movable beam is used, when the movable beam (the movable beam is a prefabricated member) is installed, the movable beam is suspended through suspension equipment, the movable beam is placed in an area between two cantilever beams according to requirements, at the moment, a clamping block on the movable beam falls into a limiting groove on the cantilever beams, two end parts of the lower end surface of the movable beam are attached to corresponding upper inclined surfaces, then an adjusting shaft is rotated, the adjusting shaft drives a bevel gear I to rotate when rotating, the bevel gear drives the bevel gear II to rotate, the bevel gear drives a bevel gear to rotate third through a short shaft, the bevel gear drives a bidirectional screw rod to rotate along with the rotation, the bidirectional screw rod drives two sliding seats to move in a direction away from each other when rotating, so that the end surface of a jacking pressing block is contacted with the corresponding lower inclined surfaces, the movable beam is tightly positioned between the two cantilever beams, and the lower inclined surfaces are arranged on the lower end surfaces of positioning protrusions, the end face of the jacking pressing block is matched with the lower inclined face, and when the jacking pressing block is in close contact with the lower inclined face, the generated acting force can pull the movable beam downwards, so that the movable beam is positioned; the tensioning chain is arranged between the two cantilever beams, and the tensioning chain is arranged between the two cantilever beams, so that the stability between the two cantilever beams is higher due to the provided lateral tension;
in addition, the shock-absorbing rubber pad is arranged, so that the stability of the contact surface is higher, the generated vibration is buffered, and the safety of the utility model in the application process is improved.
The movable beam is arranged between the two adjacent cantilever beams, so that pouring construction at the end parts of the cantilever beams is not needed, the construction of a continuous rigid frame bridge is facilitated, the movable beam is conveniently and quickly and stably limited and positioned during installation, the stability of the movable beam in the continuous rigid frame bridge is ensured, and the workload of bridge engineering construction is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments of the present invention are briefly described below.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
FIG. 4 is an enlarged view at C of FIG. 1;
wherein:
1-cantilever beam, 2-movable beam, 3-fixture block, 4-limiting groove, 5-shock-absorbing rubber pad, 6-positioning protrusion, 7-upper inclined plane, 8-lower inclined plane, 9-adjusting shaft, 10-bevel gear I, 11-bevel gear II, 12-short shaft, 13-bevel gear III, 14-bevel gear IV, 15-bidirectional screw rod, 16-slide seat, 17-jacking press block and 18-tensioning lock chain.
Detailed Description
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.
Referring to fig. 1 to 4, the continuous rigid frame bridge cantilever beam end butt joint fastening structure comprises cantilever beams 1 arranged on a bridge pier, a transition butt joint mechanism is arranged between every two adjacent cantilever beams 1, and the transition butt joint mechanism comprises a movable beam 2 and a butt joint fastening mechanism;
the end parts of the cantilever beams 1 are respectively provided with a positioning bulge 6 extending outwards, the upper end of each positioning bulge 6 is provided with an upper inclined plane 7, and the lower end of each positioning bulge 6 is provided with a lower inclined plane 8; the movable beams 2 are horizontally lapped between two adjacent cantilever beams 1, and two end parts of the lower end surfaces of the movable beams 2 are attached to the corresponding upper inclined surfaces 7;
the butt joint fastening mechanism comprises a tensioning chain 18 arranged at the lower ends of the two cantilever beams 1 and a fastening mechanism arranged at the lower end of the movable beam 2, one end of the tensioning chain 18 is connected with the lower end of one cantilever beam 1, the other end of the tensioning chain is connected with the lower end of the other adjacent cantilever beam 1, the fastening mechanism is used for stably positioning the movable beam 2 between the two cantilever beams 1, and the fastening end of the fastening mechanism is attached to the lower inclined surface 8 at the lower end of the corresponding positioning bulge 6;
the upper end surface of the cantilever beam 1 and the upper end surface of the movable beam 2 are in the same horizontal plane.
In this embodiment, the fastening mechanism includes a synchronous adjustment mechanism, a reversing transmission mechanism and a bidirectional linear positioning mechanism;
the synchronous adjusting mechanism is horizontally arranged at the lower end of the movable beam 2, the two-way linear positioning mechanisms are arranged at the lower end of the movable beam 2 side by side, the two-way linear positioning mechanisms and the synchronous adjusting mechanism are vertically distributed, the reversing transmission mechanisms correspond to the two-way linear positioning mechanisms one by one, the power input end of each reversing transmission mechanism is connected with the power output end of the synchronous adjusting mechanism, and the power input end of each two-way linear positioning mechanism is connected with the power output end of the corresponding reversing transmission mechanism;
the end part of the bidirectional linear positioning mechanism is attached to the lower inclined surface 8 at the lower end of the corresponding positioning bulge 6.
In this embodiment, the synchronous adjusting mechanism comprises an adjusting shaft 9 and bevel gears 10, the adjusting shaft 9 is horizontally and rotatably installed at the lower end of the movable beam 2, the bevel gears 10 are installed on the adjusting shaft 9 side by side, and the bevel gears 10 correspond to the reversing transmission mechanisms one by one;
each reversing transmission mechanism comprises a second bevel gear 11, a short shaft 12, a third bevel gear 13 and a fourth bevel gear 14, the short shaft 12 is vertically and rotatably installed at the lower end of the movable beam 2, the second bevel gear 11 is installed at the upper end of the short shaft 12 and meshed with the corresponding first bevel gear 10, the third bevel gear 13 is installed at the lower end of the short shaft 12, the fourth bevel gear 14 is installed on the bidirectional linear positioning mechanism, and the third bevel gear 13 is meshed with the fourth bevel gear 14.
In this embodiment, each of the two-way linear positioning mechanisms includes a two-way screw 15, a slide carriage 16, a driving support and a jacking pressing block 17, the two-way screw 15 is horizontally rotatably installed at the lower end of the movable beam 2, the four bevel gears 14 are installed on the two-way screw 15, the two slide carriages 16 are symmetrically and threadedly installed on the two-way screw 15 and are in sliding fit with the movable beam 2, the jacking pressing block 17 is connected with the corresponding slide carriage 16 through the driving support, the end surface of the jacking pressing block 17 is matched with the lower inclined surface 8, and the end surface of the jacking pressing block 17 is in close contact with the lower inclined surface 8.
In this embodiment, the tip of the up end of cantilever beam 1 is provided with spacing groove 4 side by side, the tip of walking beam 2 is equipped with and spacing groove 4 assorted fixture block 3, and fixture block 3 sets up the position at the both sides end of walking beam 2.
In this embodiment, the contact parts of the movable beam 2, the cantilever beam 1 and the upper inclined plane 7 thereof are provided with shock-absorbing rubber pads 5.
In the embodiment, a shock-absorbing rubber pad 5 is arranged at the contact part of the end surface of the jacking pressing block 17 and the lower inclined surface 8.
When the movable beam 2 (the movable beam 2 is a prefabricated part) is installed, the movable beam 2 is suspended through a suspension device, the movable beam 2 is placed in a region between two cantilever beams 1 according to requirements, at the moment, a clamping block 3 on the movable beam 2 falls into a limiting groove 4 on the cantilever beams 1, two end parts of the lower end surface of the movable beam 2 are attached to corresponding upper inclined surfaces 7, then an adjusting shaft 9 is rotated, the adjusting shaft 9 drives a bevel gear I10 to rotate when rotating, the bevel gear I10 drives a bevel gear II 11 to rotate, a bevel gear III 13 is driven to rotate through a short shaft 12, a bevel gear IV 14 drives a bidirectional screw 15 to rotate, the bidirectional screw 15 drives two sliding seats 16 to move in a direction away from each other when rotating, so that the end surface of a jacking pressing block 17 is in contact with the corresponding lower inclined surface 8, and the movable beam 2 is tightly positioned between the two cantilever beams 1, by arranging the lower inclined plane 8 on the lower end face of the positioning protrusion 6 and matching the end face of the abutting pressing block 17 with the lower inclined plane 8, when the abutting pressing block 17 is in close contact with the lower inclined plane, the generated acting force can pull the movable beam 2 downwards, so that the movable beam 2 is positioned; by arranging the tensioning chain 18 between the two cantilever beams 1 and arranging the tensioning chain 18 between the two cantilever beams 1, the stability between the two cantilever beams 1 is higher due to the provided lateral tension;
in addition, the shock-absorbing rubber pad 5 is arranged, so that the stability of a contact surface is higher, the generated vibration is buffered, and the safety of the utility model in the application process is improved.
The movable beam structure is simple in structure, the movable beam 2 is arranged between the two adjacent cantilever beams 1, pouring construction is not needed to be carried out on the end portions of the cantilever beams 1, construction of a continuous rigid frame bridge is facilitated, the movable beam is conveniently and quickly and stably limited and positioned during installation, stability of the movable beam in the continuous rigid frame bridge is guaranteed, and workload of bridge engineering construction is reduced.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A continuous rigid frame bridge cantilever beam end butt joint fastening structure comprises cantilever beams (1) arranged on a bridge pier, and a transition butt joint mechanism is arranged between every two adjacent cantilever beams (1), and is characterized in that the transition butt joint mechanism comprises a movable beam (2) and a butt joint fastening mechanism;
the end parts of the cantilever beams (1) are respectively provided with a positioning bulge (6) extending outwards, the upper end of each positioning bulge (6) is provided with an upper inclined plane (7), and the lower end of each positioning bulge (6) is provided with a lower inclined plane (8); the movable beams (2) are horizontally lapped between two adjacent cantilever beams (1), and two end parts of the lower end surfaces of the movable beams (2) are attached to the corresponding upper inclined surfaces (7);
the butt joint fastening mechanism comprises tensioning lock chains (18) arranged at the lower ends of the two cantilever beams (1) and a fastening mechanism arranged at the lower end of the movable beam (2), one end of each tensioning lock chain (18) is connected with the lower end of one cantilever beam (1), the other end of each tensioning lock chain is connected with the lower end of the other adjacent cantilever beam (1), the fastening mechanism is used for stably positioning the movable beam (2) between the two cantilever beams (1), and the fastening end of the fastening mechanism is attached to the lower inclined plane (8) at the lower end of the corresponding positioning protrusion (6);
the upper end face of the cantilever beam (1) and the upper end face of the movable beam (2) are in the same horizontal plane.
2. The continuous rigid frame bridge cantilever beam end butt joint fastening structure of claim 1, wherein the fastening mechanism comprises a synchronous adjusting mechanism, a reversing transmission mechanism and a bidirectional linear positioning mechanism;
the synchronous adjusting mechanism is horizontally arranged at the lower end of the movable beam (2), the two-way linear positioning mechanisms are arranged at the lower end of the movable beam (2) side by side and are vertically distributed with the synchronous adjusting mechanism, the reversing transmission mechanisms correspond to the two-way linear positioning mechanisms one by one, the power input end of each reversing transmission mechanism is connected with the power output end of the synchronous adjusting mechanism, and the power input end of each two-way linear positioning mechanism is connected with the power output end of the reversing transmission mechanism;
the end part of the bidirectional linear positioning mechanism is attached to the lower inclined plane (8) at the lower end of the corresponding positioning bulge (6).
3. The cantilever beam end butt-joint fastening structure of the continuous rigid frame bridge as claimed in claim 2, wherein the synchronous adjusting mechanism comprises an adjusting shaft (9) and a first bevel gear (10), the adjusting shaft (9) is horizontally and rotatably installed at the lower end of the movable beam (2), a plurality of the first bevel gears (10) are installed on the adjusting shaft (9) side by side, and the first bevel gears (10) correspond to the reversing transmission mechanisms one by one;
each reversing transmission mechanism comprises a second bevel gear (11), a short shaft (12), a third bevel gear (13) and a fourth bevel gear (14), the short shaft (12) is vertically and rotatably installed at the lower end of the movable beam (2), the second bevel gear (11) is installed at the upper end of the short shaft (12) and meshed with the corresponding first bevel gear (10), the third bevel gear (13) is installed at the lower end of the short shaft (12), the fourth bevel gear (14) is installed on the bidirectional linear positioning mechanism, and the third bevel gear (13) is meshed with the fourth bevel gear (14).
4. The continuous rigid frame bridge cantilever beam end butt-joint fastening structure of claim 3, wherein each bidirectional linear positioning mechanism comprises a bidirectional screw rod (15), two sliding seats (16), a driving bracket and a jacking pressing block (17), the bidirectional screw rod (15) is horizontally and rotatably installed at the lower end of the movable beam (2), the bevel gear four (14) is installed on the bidirectional screw rod (15), the two sliding seats (16) are symmetrically and threadedly installed on the bidirectional screw rod (15) and are in sliding fit with the movable beam (2), the jacking pressing block (19) is connected with the corresponding sliding seat (16) through the driving bracket, the end face of the jacking pressing block (17) is matched with the lower inclined plane (8), and the end face of the jacking pressing block (17) is in close contact with the lower inclined plane (8).
5. The continuous rigid frame bridge cantilever beam end butt joint fastening structure according to claim 1, wherein the end of the upper end face of the cantilever beam (1) is provided with a limiting groove (4) side by side, the end of the movable beam (2) is provided with a clamping block (3) matched with the limiting groove (4), and the clamping block (3) is arranged at the position of the two side ends of the movable beam (2).
6. The continuous rigid frame bridge cantilever beam end butt joint fastening structure is characterized in that shock-absorbing rubber pads (5) are arranged at the contact parts of the movable beam (2) and the cantilever beam (1) and the upper inclined surface (7) of the cantilever beam.
7. The continuous rigid frame bridge cantilever beam end butt joint fastening structure as claimed in claim 4, wherein the contact part of the end face of the jacking pressing block (17) and the lower inclined plane (8) is provided with a shock-absorbing rubber pad (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122084599.XU CN216074768U (en) | 2021-08-31 | 2021-08-31 | Continuous rigid frame bridge cantilever beam tip butt joint fastening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122084599.XU CN216074768U (en) | 2021-08-31 | 2021-08-31 | Continuous rigid frame bridge cantilever beam tip butt joint fastening structure |
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| Publication Number | Publication Date |
|---|---|
| CN216074768U true CN216074768U (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122084599.XU Active CN216074768U (en) | 2021-08-31 | 2021-08-31 | Continuous rigid frame bridge cantilever beam tip butt joint fastening structure |
Country Status (1)
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|---|---|
| CN (1) | CN216074768U (en) |
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2021
- 2021-08-31 CN CN202122084599.XU patent/CN216074768U/en active Active
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