CN220166675U - Lifting tensioning operation platform for transverse steel strands of prestressed rigid frame bridge - Google Patents
Lifting tensioning operation platform for transverse steel strands of prestressed rigid frame bridge Download PDFInfo
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- CN220166675U CN220166675U CN202320138103.9U CN202320138103U CN220166675U CN 220166675 U CN220166675 U CN 220166675U CN 202320138103 U CN202320138103 U CN 202320138103U CN 220166675 U CN220166675 U CN 220166675U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 35
- 239000010959 steel Substances 0.000 title claims abstract description 35
- 230000009193 crawling Effects 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000003028 elevating effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a prestressed rigid frame bridge transverse steel strand lifting tensioning operation platform, which comprises a first platform, a second platform and a third platform which are sequentially arranged from top to bottom, wherein the first platform is positioned above a rigid frame bridge body flange plate, the second platform and the third platform are positioned below the rigid frame bridge body flange plate, a weight box is arranged at the bottom of the first platform, and travelling wheels positioned on the upper end surface of the rigid frame bridge body flange plate are arranged at the bottom of the weight box; the first platform is connected with the third platform through the connecting rod, the bottom plates of the first platform and the second platform are just right provided with a passing port, a first crawling ladder penetrating through the passing port is arranged from the first platform to the third platform, a lifting mechanism is arranged on the bottom plate of the first platform downwards, the second platform is connected with the lifting mechanism, and the lifting mechanism can enable the second platform to move up and down. According to the utility model, through the operation platform, operators can conveniently and rapidly perform prestress tensioning on transverse steel strands with different heights, and the operation platform is safe, reliable and wide in applicability.
Description
Technical Field
The utility model relates to the technical field of construction of prestressed steel bridge, in particular to a lifting and tensioning operation platform for transverse steel strands of a prestressed steel bridge.
Background
Along with the vigorous development of traffic industry in China, the high pier large span prestressed rigid frame bridge is applied in a large quantity, the tensioning of prestressed steel strands is a key in construction, however, the transverse prestressed bundle tensioning has great potential safety hazard due to the design of high-altitude edge operation. At present, the transverse tensioning is basically carried out by a simple bracket lifting jack such as a steel pipe, so that the operation is inconvenient, the safety coefficient is very low, and the high pier bridge is unrealistic to set up a bracket under the bridge. At present, a tensioning operation platform is designed, but vertical movement cannot be realized, only one high steel strand can be tensioned, and the situation that the number 0 block is provided with steel strands with different heights needs to be modified into multiple layers, so that the counterweight is greatly weighted, and the construction is not facilitated.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides the lifting tensioning operation platform for the transverse steel strands of the prestressed rigid frame bridge, and by the aid of the operation platform, operators can conveniently and rapidly perform prestress tensioning on the transverse steel strands with different heights, and the operation platform is safe, reliable and wide in applicability.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the lifting tensioning operation platform comprises a first platform, a second platform and a third platform which are sequentially arranged from top to bottom, wherein the first platform is positioned above a rigid frame bridge body flange plate, the second platform and the third platform are positioned below the rigid frame bridge body flange plate, a weight box is arranged at the bottom of the first platform, and travelling wheels positioned on the upper end face of the rigid frame bridge body flange plate are arranged at the bottom of the weight box; the first platform is connected with the third platform through a connecting rod, the first platform and the bottom plate of the second platform are just right opposite to each other and are provided with a passing port, a first crawling ladder penetrating through the passing port is arranged from the first platform to the third platform, a lifting mechanism is arranged on the bottom plate of the first platform downwards, the second platform is connected with the lifting mechanism, and the lifting mechanism can enable the second platform to move up and down.
Further, elevating system includes the level installs the pivot of first platform top, the one end of pivot is connected with drive arrangement, fixed cover is equipped with first bevel gear in the pivot, first bevel gear meshing has the second bevel gear, vertical being connected with the lead screw on the second bevel gear, the lower extreme of lead screw with the third platform rotates to be connected, screw thread fit has the connecting block on the lead screw, the connecting block with second platform fixed connection, the one end that the second platform deviates from rigid frame bridge body web is provided with the guide way, the guide way with connecting rod sliding fit.
Further, a supporting plate is sleeved on the upper space of the rotating shaft, and the supporting plate is fixed on the first platform.
Further, the output end of the driving device is fixedly sleeved with a first gear, the rotating shaft is fixedly sleeved with a second gear meshed with the first gear, and the axis of the first gear is parallel to the axis of the second gear.
Further, the connecting block is welded and fixed with the second platform.
Further, the driving device is a motor.
Further, a second crawling ladder extending to the upper end face of the rigid frame bridge body flange plate is further arranged on the first platform.
Further, protection plates are arranged on the first platform and the second platform.
Compared with the prior art, the utility model has at least the following beneficial effects:
according to the lifting tensioning operation platform for the transverse steel strands of the prestressed rigid frame bridge, provided by the utility model, the operation platform can horizontally displace through the travelling wheels arranged at the bottom of the weight box connected with the bottom of the first platform, an operator can stand on the second platform to finish the prestress tensioning work of the steel strands at different positions on the same height, and meanwhile, the second platform can be driven to move along the height direction through the lifting mechanism, so that the operator can conveniently and rapidly perform prestress tensioning on the transverse steel strands at different heights. That is, the utility model can perform prestress tensioning not only on the steel strands positioned on the same height on the web plate of the rigid frame bridge body, but also on the steel strands with different heights, and is safe, reliable and wide in applicability.
In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a prestressed rigid frame bridge transverse steel strand liftable tensioning operation platform;
FIG. 2 is a schematic view of a portion of a prestressed rigid frame bridge transverse steel strand liftable tensioning platform (not including a lifting mechanism) according to the present utility model;
fig. 3 is a schematic diagram of a lifting mechanism in a lifting tensioning operation platform of a transverse steel strand of a prestressed rigid frame bridge.
In the figure: 1-a first platform; 2-a second platform; 3-a third platform; 4-rigid frame bridge body flange plates; 5-connecting rods; 6-passing port; 7-a first ladder; 8-a lifting mechanism; 801-a rotating shaft; 802-driving means; 803-first bevel gear; 804-a second bevel gear; 805-screw rod; 806-supporting a plate; 807-a first gear; 808-a second gear; 809-connecting blocks; 9-a weight box; 10-travelling wheels; 11-rigid frame bridge body webs; 12-a guide groove; 13-a second ladder; 14-protecting plates; 15-steel strand.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As a specific embodiment of the present utility model, as shown in fig. 1 to 3, a prestressed rigid frame bridge transverse steel strand liftable tensioning operation platform includes a first platform 1, a second platform 2 and a third platform 3 sequentially disposed from top to bottom, where the first platform 1 is located above a rigid frame bridge body flange plate 4, the second platform 2 and the third platform 3 are located below the rigid frame bridge body flange plate 4, a weight box 9 is disposed at the bottom of the first platform 1, a travelling wheel 10 located on an upper end surface of the rigid frame bridge body flange plate 4 is disposed at the bottom of the weight box 9, that is, the weight box 9 is located on an upper end surface of the first platform 1, so that the whole operation platform is prevented from overturning, and the travelling wheel 10 at the bottom of the weight box 9 can drive the whole operation platform to move left and right, so that an operator can perform prestressed tensioning on steel strands 15 at the same height and different positions, in other words, after the steel strands 15 in a current area are tensioned, the operation platform is moved through the travelling wheel 10, and a next area is tensioned.
The first platform 1 is connected with the third platform 3 through a connecting rod 5, specifically, the first platform 1 and the third platform 3 are fixedly connected through four connecting rods 5 which are in rectangular distribution, and the third platform 3 is suspended through the connecting rods 5. The bottom plates of the first platform 1 and the second platform 2 are just opposite to each other and provided with a pass-through port 6, the pass-through port 6 is used for an operator to pass through, a first ladder stand 7 penetrating through the pass-through port 6 is arranged from the first platform 1 to the third platform 3, the operator can descend from the first platform 1 to the second platform 2 by means of the first ladder stand 7, and the operator can finish prestress tensioning of the steel strand 15 by standing on the second platform 2. Preferably, a second ladder stand 13 extending to the upper end face of the rigid frame bridge body flange plate 4 is further arranged on the first platform 1, an operator can conveniently and rapidly climb onto the first platform 1 by means of the second ladder stand 13, and then prestress tensioning is carried out on the steel strand 15 in the second platform 2 by means of the first ladder stand 7. More preferably, the first platform 1 and the second platform 2 are provided with protection plates 14 to protect operators and prevent the operators from falling from high altitude.
A lifting mechanism 8 is arranged downwards on the bottom plate of the first platform 1, the second platform 2 is connected with the lifting mechanism 8, and the lifting mechanism 8 can enable the second platform 2 to move up and down. That is, the second platform 2 can move along the height direction under the driving of the lifting mechanism 8, and an operator stands on the second platform 2 to realize prestress tensioning on the steel strands 15 with different heights.
In addition to the above embodiment, as a more preferable embodiment, as shown in fig. 3, the lifting mechanism 8 includes a rotating shaft 801 horizontally installed above the first platform 1, and a driving device 802 is connected to one end of the rotating shaft 801, and the driving device 802 is used for driving the rotating shaft 801 to rotate. Preferably, a supporting plate 806 is sleeved on the rotating shaft 801, and the supporting plate 806 is fixed on the first platform 1, so that the rotating shaft 801 is installed and fixed. The fixed cover in pivot 801 is equipped with first bevel gear 803, and first bevel gear 803 meshes there is second bevel gear 804, and vertical being connected with lead screw 805 on the second bevel gear 804, the lower extreme and the rotation of third platform 3 of lead screw 805 are connected, and screw thread fit has connecting block 809 on the lead screw 805, and connecting block 809 and second platform 2 fixed connection, and the one end that second platform 2 deviates from rigid frame bridge body web 11 is provided with guide way 12, guide way 12 and connecting rod 5 sliding fit. Specifically, when the driving device 802 drives the rotation shaft 801 to rotate, the first bevel gear 803 rotates along with the rotation shaft 801, the first bevel gear 803 drives the second bevel gear 804 to rotate, and the second bevel gear 804 drives the screw 805 to rotate, and because the guide groove 12 on the second platform 2 is in sliding fit with the connecting rod 5, when the screw 805 rotates, the connecting block 809 moves up and down along the screw 805, and further the second platform 2 moves in the height direction. Preferably, the connection block 809 is welded and fixed with the second platform 2, so as to ensure the reliability of the structural connection between the two.
As shown in fig. 3, in the present embodiment, a first gear 807 is fixedly attached to the output end of the driving device 802, and a second gear 808 that meshes with the first gear 807 is fixedly attached to the rotating shaft 801, and the axis of the first gear 807 is parallel to the axis of the second gear 808. The output of the rotational force is smoothly accomplished by the engagement of the first gear 807 at the output end of the driving means 802 with the second gear 808 on the rotation shaft 801.
For example, two first bevel gears 803 are fixedly sleeved on the rotating shaft 801, each first bevel gear 803 is correspondingly meshed with a second bevel gear 804, each second bevel gear 804 is vertically connected with a lead screw 805, each lead screw 805 is in threaded fit with a connecting block 809, and each connecting block 809 is fixedly connected with the second platform 2, so that the reliability of the structure is ensured. Illustratively, the drive 802 employs a motor.
Finally, it should be noted that: the above examples are only specific embodiments of the present utility model, and are not intended to limit the scope of the present utility model, but it should be understood by those skilled in the art that the present utility model is not limited thereto, and that the present utility model is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a horizontal steel strand wires liftable stretch-draw operation platform of prestressing force rigid frame bridge, its characterized in that, including top-down first platform (1), second platform (2) and third platform (3) that set gradually, first platform (1) are located the top of rigid frame bridge body flange plate (4), second platform (2) with third platform (3) are located the below of rigid frame bridge body flange plate (4), the bottom of first platform (1) is provided with weight box (9), the bottom of weight box (9) is provided with walking wheel (10) that are located rigid frame bridge body flange plate (4) up end; the first platform (1) is connected with the third platform (3) through a connecting rod (5), a passing port (6) is formed in the bottom plates of the first platform (1) and the second platform (2) in a right-of-way mode, a first ladder stand (7) penetrating through the passing port (6) is arranged from the first platform (1) to the third platform (3), a lifting mechanism (8) is arranged on the bottom plate of the first platform (1) downwards, the second platform (2) is connected with the lifting mechanism (8), and the lifting mechanism (8) can enable the second platform (2) to move up and down;
elevating system (8) are in including horizontal installation pivot (801) of first platform (1) top, the one end of pivot (801) is connected with drive arrangement (802), fixed cover is equipped with first bevel gear (803) on pivot (801), first bevel gear (803) meshing has second bevel gear (804), vertical lead screw (805) that are connected with on second bevel gear (804), the lower extreme of lead screw (805) with third platform (3) rotate and are connected, screw thread fit has connecting block (809) on lead screw (805), connecting block (809) with second platform (2) fixed connection, the one end that second platform (2) deviate from rigid frame bridge body web (11) is provided with guide way (12), guide way (12) with connecting rod (5) sliding fit.
2. The tension operation platform capable of lifting the transverse steel strands of the prestressed rigid frame bridge according to claim 1, wherein a supporting plate (806) is sleeved on the upper space of the rotating shaft (801), and the supporting plate (806) is fixed on the first platform (1).
3. The lifting tensioning operation platform for the transverse steel strands of the prestressed rigid frame bridge according to claim 1, wherein a first gear (807) is fixedly sleeved at the output end of the driving device (802), a second gear (808) meshed with the first gear (807) is fixedly sleeved on the rotating shaft (801), and the axis of the first gear (807) is parallel to the axis of the second gear (808).
4. The lifting tensioning operation platform for the transverse steel strands of the prestressed rigid frame bridge, according to claim 1, is characterized in that the connecting blocks (809) are welded and fixed with the second platform (2).
5. The tension operation platform capable of lifting and lowering transverse steel strands of the prestressed rigid frame bridge according to claim 1, wherein the driving device (802) is a motor.
6. The tension operation platform capable of lifting the transverse steel strands of the prestressed rigid frame bridge according to claim 1, wherein the first platform (1) is further provided with a second crawling ladder (13) extending to the upper end face of the rigid frame bridge body flange plate (4).
7. The tension operation platform capable of lifting the transverse steel strands of the prestressed rigid frame bridge according to claim 1, wherein the first platform (1) and the second platform (2) are provided with protection plates (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320138103.9U CN220166675U (en) | 2023-02-01 | 2023-02-01 | Lifting tensioning operation platform for transverse steel strands of prestressed rigid frame bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320138103.9U CN220166675U (en) | 2023-02-01 | 2023-02-01 | Lifting tensioning operation platform for transverse steel strands of prestressed rigid frame bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220166675U true CN220166675U (en) | 2023-12-12 |
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ID=89066006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320138103.9U Active CN220166675U (en) | 2023-02-01 | 2023-02-01 | Lifting tensioning operation platform for transverse steel strands of prestressed rigid frame bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220166675U (en) |
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2023
- 2023-02-01 CN CN202320138103.9U patent/CN220166675U/en active Active
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