CN216405132U - Temporary prestress structure for prefabricated section assembled bridge - Google Patents
Temporary prestress structure for prefabricated section assembled bridge Download PDFInfo
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- CN216405132U CN216405132U CN202122892136.6U CN202122892136U CN216405132U CN 216405132 U CN216405132 U CN 216405132U CN 202122892136 U CN202122892136 U CN 202122892136U CN 216405132 U CN216405132 U CN 216405132U
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- 229910000746 Structural steel Inorganic materials 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000009417 prefabrication Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a temporary prestressed structure for a prefabricated section assembled bridge, which comprises: the tension device comprises a first tension screw and a second tension screw, wherein the first tension screw and the second tension screw are respectively in threaded connection through a screw connector, a connecting disc is arranged on the outer surface of the first tension screw, the connecting disc is in threaded connection with the first tension screw, two tension rods are fixedly connected to one side of the connecting disc, a limiting piece is fixedly connected to the top end of each tension rod, two clamping blocks are arranged on the outer surface of the second tension screw, and the two clamping blocks are symmetrically welded to the two sides of the second tension screw. According to the utility model, through the matching between the tension rod and the clamping block, when the first tension screw and the second tension screw are under tension, the tension rod can be under certain tension, so that the influence of larger tension on the threads arranged on the first tension screw, the screw connector and the second tension screw is reduced, the service life of the device is greatly prolonged, and the device is convenient to reuse.
Description
Technical Field
The utility model belongs to the technical field of bridge prestressed structures, and particularly relates to a temporary prestressed structure for a prefabricated section assembled bridge.
Background
A segment prefabrication and assembly construction method is characterized in that a bridge superstructure is divided into a plurality of standard segment beams, after matched prefabrication is completed in a prefabrication site, special assembling equipment such as a bridge girder erection machine is used on the bridge substructure on site to assemble the standard segment beams one by one in sequence, prestress is applied to the bridge substructure to form an integral structure, and the integral structure is pushed one by one and assembled one by one along a preset installation direction. The prestress is compressive stress applied to the structure in advance during construction in order to improve the service performance of the structure, and the compressive stress can completely or partially offset tensile stress caused by load during service of the structure, so that structural damage is avoided. In the existing prestressed structure, the screw connector is connected with the tensioning screw through threads, when the prestressed concrete pipe is used, the threads are easily damaged by large pulling force, the service life is short, and the use is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a temporary prestressed structure for a prefabricated section assembly type bridge, which aims to solve the problem that threads connected with a tension screw are easily damaged by large pulling force when the conventional screw connector and the tension screw are used.
In order to achieve the above objects, the present invention provides a temporary prestressed structure for a prefabricated segmental assembled bridge, including:
the tension device comprises a first tension screw and a second tension screw, a screw connector is arranged between the first tension screw and the second tension screw, the first tension screw and the second tension screw are respectively in threaded connection with the screw connector, a connecting disc is arranged on the outer surface of the first tension screw, the connecting disc is in threaded connection with the first tension screw, the connecting disc is far away from the screw connector, two tension rods are fixedly connected to one side of the connecting disc, the two tension rods are symmetrically arranged along the extending direction of the first tension screw, a limiting piece is fixedly connected to the top end of each tension rod, two clamping blocks are arranged on the outer surface of the second tension screw, and the two clamping blocks are symmetrically welded to two sides of the second tension screw.
According to an embodiment of the utility model, the inside of the clamping block is provided with a clamping groove, and the width of the clamping groove is matched with the diameter of the tension rod.
According to an embodiment of the present invention, two sides of the second tension screw are respectively provided with a connecting plate, and the connecting plates are fixedly connected with the second tension screw.
According to an embodiment of the utility model, the connecting plate is an L-shaped steel plate, the long side of the L-shaped structure of the connecting plate is fixedly connected with the second tension screw, and the short side of the L-shaped structure of the connecting plate is located at the top of the clamping block and far away from the clamping block.
According to a specific embodiment of the utility model, a threaded hole is formed in the short side of the L-shaped structure of the connecting plate, a lead screw is arranged in the threaded hole, and the lead screw is in threaded connection with the short side of the L-shaped structure of the connecting plate.
According to a specific embodiment of the present invention, a first end of the screw is provided with a fixing column, the fixing column is fixedly connected with the screw, and a second end of the screw is provided with a knob, the knob is fixedly connected with the screw.
According to one embodiment of the utility model, the diameter of the fixed column is larger than the diameter of the threaded spindle.
According to a specific embodiment of the utility model, the diameter of the connection disc is larger than the diameter of the first tension screw.
According to a specific embodiment of the utility model, the diameter of the limiting piece is larger than that of the pull rod.
Compared with the prior art, the temporary pre-stress structure for the prefabricated section assembled bridge provided by the utility model has the advantages that through the matching of the connecting disc arranged on the first tension screw, the tension rod fixed on the connecting disc and the clamping block arranged on the second tension screw, when the first tension screw and the second tension screw are subjected to tension, the tension rod can be subjected to certain tension, the influence of larger tension on the threads arranged on the first tension screw, the screw connector and the second tension screw is reduced, the service life of the device is greatly prolonged, and the device is convenient to reuse.
Drawings
Fig. 1 is a front view of a temporary prestressed structure provided according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of a temporary pre-stressed structure according to an embodiment of the present invention.
Fig. 3 is a partially enlarged schematic view of a temporary pre-stressed structure a according to an embodiment of the utility model.
Reference numerals:
1-a first tension screw; 2-a screw connector; 3-a second tension screw; 4-a connecting disc; 5-a tension bar; 6-limiting sheet; 7-a fixture block; 8-a clamping groove; 9-a connecting plate; 10-a lead screw; 11-fixed column; 12-knob.
Detailed Description
The present invention is described in detail below with reference to specific embodiments in order to make the concept and idea of the present invention more clearly understood by those skilled in the art. It is to be understood that the embodiments presented herein are only a few of all embodiments that the present invention may have. Those skilled in the art who review this disclosure will readily appreciate that many modifications, variations, or alterations to the described embodiments, either in whole or in part, are possible and within the scope of the utility model as claimed.
As used herein, the terms "first," "second," and the like are not intended to imply any order, quantity, or importance, but rather are used to distinguish one element from another. As used herein, the terms "a," "an," and other similar terms are not intended to mean that there is only one of the things, but rather that the pertinent description is directed to only one of the things, which may have one or more. As used herein, the terms "comprises," "comprising," and other similar words are intended to refer to logical interrelationships, and are not to be construed as referring to spatial structural relationships. For example, "a includes B" is intended to mean that logically B belongs to a, and not that spatially B is located inside a. Furthermore, the terms "comprising," "including," and other similar words are to be construed as open-ended, rather than closed-ended. For example, "a includes B" is intended to mean that B belongs to a, but B does not necessarily constitute all of a, and a may also include C, D, E and other elements.
The terms "embodiment," "present embodiment," "an embodiment," "one embodiment," and "one embodiment" herein do not mean that the pertinent description applies to only one particular embodiment, but rather that the description may apply to yet another embodiment or embodiments. Those skilled in the art will appreciate that any descriptions made in relation to one embodiment may be substituted, combined, or otherwise combined with the descriptions in relation to another embodiment or embodiments, and that the substitution, combination, or otherwise combination of the new embodiments as produced herein may occur to those skilled in the art and are intended to be within the scope of the present invention.
Example 1
Additional aspects and advantages of embodiments of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the utility model. With reference to fig. 1 to 3, an embodiment of the present invention provides a temporary prestressed structure for a prefabricated segmental assembled bridge, including:
first pulling force screw rod 1 and second pulling force screw rod 3 are provided with screw connector 2 between first pulling force screw rod 1 and the second pulling force screw rod 3, first pulling force screw rod 1 and second pulling force screw rod 3 respectively with screw connector 2 threaded connection, the surface of first pulling force screw rod 1 is provided with connection pad 4, connection pad 4 and first pulling force screw rod 1 threaded connection, and screw connector 2 is kept away from to connection pad 4, the diameter of connection pad 4 is greater than the diameter of first pulling force screw rod 1. Two tension rods 5 are fixedly connected to one side of the connecting disc 4, the two tension rods 5 are symmetrically arranged along the extending direction of the first tension screw rod 1, the top end of each tension rod 5 is fixedly connected with a limiting piece 6, two clamping blocks 7 are arranged on the outer surface of the second tension screw rod 3, and the two clamping blocks 7 are symmetrically welded to the two sides of the second tension screw rod 3. The inside of the clamping block 7 is provided with a clamping groove 8, and the width of the clamping groove 8 is matched with the diameter of the tension rod 5. First pulling force screw rod 1 links together the back through screw connector 2 and second pulling force screw rod 3, through rotating connection pad 4, connection pad 4 drives pulling force pole 5 and rotates, pulling force pole 5 rotates the inside of draw-in groove 8, spacing piece 6 keeps off in one side of fixture block 7, when first pulling force screw rod 1 receives the pulling force with second pulling force screw rod 3, pulling force pole 5 receives certain pulling force, reduce great pulling force to first pulling force screw rod 1, the screw thread of seting up on screw connector 2 and the second pulling force screw rod 3 causes the influence, the device's life has been improved greatly, be convenient for used repeatedly.
As an optional technical scheme of the utility model: and connecting plates 9 are respectively arranged on two sides of the second tension screw 3, and the connecting plates 9 are fixedly connected with the second tension screw 3. Connecting plate 9 is L type structure steel sheet, and the long limit of L type structure of connecting plate 9 is connected with second pulling force screw rod 3 fixed connection, and the L type structure minor face of connecting plate 9 is located the top of fixture block 7 and keeps away from fixture block 7. Threaded holes are formed in the short edges of the L-shaped structures of the connecting plates 9, lead screws 10 are arranged in the threaded holes, and the lead screws 10 are in threaded connection with the short edges of the L-shaped structures of the connecting plates 9. The first end of lead screw 10 is provided with fixed column 11, fixed column 11 and lead screw 10 fixed connection, and the second end of lead screw 10 is provided with knob 12, knob 12 and lead screw 10 fixed connection. The rotary knob 12 is rotated to drive the screw rod 10 to rotate, the screw rod 10 rotates inside the connecting plate 9, under the action of the threads, the screw rod 10 drives the fixing column 11 to move, the fixing column 11 blocks the tension rod 5, and the tension rod 5 is prevented from being separated from the clamping groove 8.
Specifically, the diameter of the fixed column 11 is larger than that of the screw rod 10. Therefore, when the lead screw 10 drives the fixed column 11 to move, the fixed column 11 can block the tension rod 5.
Specifically, the diameter of the limiting sheet 6 is larger than that of the tension rod 5. Therefore, when the connecting disc 4 drives the tension rod 5 to rotate, the limiting sheet 6 is blocked at one side of the clamping block 7, and the tension rod 5 is prevented from being influenced by tension to be separated from the clamping block. Specifically, the position of the clamping groove 8 is matched with the position of the tension rod 5, and when the connecting disc 4 is rotated, the connecting disc 4 drives the tension rod 5 to rotate, so that the tension rod 5 rotates to the inside of the clamping groove 8.
Example 2
The embodiment of the utility model provides a working method of a temporary prestressed structure for a prefabricated section assembled bridge, which specifically comprises the following steps:
after first pulling force screw 1 links together through screw connector 2 and second pulling force screw 3, rotate connection pad 4, connection pad 4 drives pulling force pole 5 and rotates, pulling force pole 5 rotates the inside of draw-in groove 8, spacing piece 6 keeps off in one side of fixture block 7, when first pulling force screw 1 receives the pulling force with second pulling force screw 3, pulling force pole 5 receives certain pulling force, reduce great pulling force and lead to the fact the influence to first pulling force screw 1, the screw thread of seting up on screw connector 2 and the second pulling force screw 3, drive lead screw 10 through rotating knob 12 and rotate, lead screw 10 rotates in the inside of connecting plate 9, under the effect of screw thread, lead screw 10 drives fixed column 11 and removes, fixed column 11 blocks pulling force pole 5, avoid pulling force pole 5 to break away from draw-in groove 8.
In summary, according to the temporary prestressed structure for the prefabricated section assembled bridge provided by the utility model, through the matching between the connecting disc arranged on the first tension screw, the tension rod fixed on the connecting disc and the clamping block arranged on the second tension screw, when the first tension screw and the second tension screw are subjected to tension, the tension rod can be subjected to certain tension, so that the influence of larger tension on the threads arranged on the first tension screw, the screw connector and the second tension screw is reduced, the service life of the device is greatly prolonged, and the device is convenient to reuse.
The concepts, principles and concepts of the utility model have been described above in detail in connection with specific embodiments (including examples and illustrations). Those skilled in the art will appreciate that the embodiments of the present invention are capable of other than the several forms described above and that the steps, methods, systems, and components of the embodiments described herein are capable of further modifications, permutations and equivalents after reading the present specification, which should be considered as falling within the scope of the present invention, which is limited only by the claims.
Claims (9)
1. A temporary prestressed structure for precast segmental assembled bridges, comprising: the tension device comprises a first tension screw and a second tension screw, wherein a screw connector is arranged between the first tension screw and the second tension screw, the first tension screw and the second tension screw are respectively in threaded connection with the screw connector, a connecting disc is arranged on the outer surface of the first tension screw, the connecting disc is in threaded connection with the first tension screw, the connecting disc is far away from the screw connector, two tension rods are fixedly connected to one side of the connecting disc, the two tension rods are symmetrically arranged along the extending direction of the first tension screw, a limiting piece is fixedly connected to the top end of each tension rod, two clamping blocks are arranged on the outer surface of the second tension screw, and the two clamping blocks are symmetrically welded to two sides of the second tension screw.
2. The temporary prestressed structure for precast segmental assembled bridges as claimed in claim 1, wherein a slot is formed in the interior of said clamping block, and the width of said slot is adapted to the diameter of said tension rod.
3. The temporary prestressed structure for precast segmental assembled bridges of claim 1, wherein connecting plates are respectively disposed at both sides of the second tension screw, and the connecting plates are fixedly connected with the second tension screw.
4. The temporary prestressed structure for precast segmental assembled bridge according to claim 3, wherein said connecting plate is an L-shaped structural steel plate, the long side of the L-shaped structure of said connecting plate is fixedly connected to said second tension screw, and the short side of the L-shaped structure of said connecting plate is located at the top of said fixture block and away from said fixture block.
5. The temporary prestressed structure for precast segmental assembled bridges as claimed in claim 3, wherein the short side of the L-shaped structure of the connecting plate is provided with a threaded hole, a lead screw is arranged in the threaded hole, and the lead screw is in threaded connection with the short side of the L-shaped structure of the connecting plate.
6. The temporary prestressed structure for precast segmental assembled bridge according to claim 5, wherein a first end of said screw is provided with a fixing column fixedly connected with said screw, and a second end of said screw is provided with a knob fixedly connected with said screw.
7. The temporary prestressing structure for precast segmental assembled bridges of claim 6, wherein the fixing posts have a diameter greater than that of the lead screws.
8. The temporary prestressed structure for precast segmental assembled bridges of claim 1, wherein the diameter of said connection disc is greater than that of said first tension screw.
9. The temporary prestressed structure for precast segmental assembled bridges of claim 1, wherein the diameter of said stopper piece is greater than that of said tension bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122892136.6U CN216405132U (en) | 2021-11-24 | 2021-11-24 | Temporary prestress structure for prefabricated section assembled bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122892136.6U CN216405132U (en) | 2021-11-24 | 2021-11-24 | Temporary prestress structure for prefabricated section assembled bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216405132U true CN216405132U (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122892136.6U Active CN216405132U (en) | 2021-11-24 | 2021-11-24 | Temporary prestress structure for prefabricated section assembled bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216405132U (en) |
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2021
- 2021-11-24 CN CN202122892136.6U patent/CN216405132U/en active Active
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