CN220638385U - Movable tensioning device suitable for precast T beam edge and midspan hogging moment - Google Patents
Movable tensioning device suitable for precast T beam edge and midspan hogging moment Download PDFInfo
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- CN220638385U CN220638385U CN202322131201.2U CN202322131201U CN220638385U CN 220638385 U CN220638385 U CN 220638385U CN 202322131201 U CN202322131201 U CN 202322131201U CN 220638385 U CN220638385 U CN 220638385U
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- 238000000034 method Methods 0.000 description 7
- 238000005457 optimization Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
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- 239000011513 prestressed concrete Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of precast T beam construction, and provides a movable tensioning device suitable for precast T beam edges and mid-span hogging moment, which comprises a bracket, a lifting unit and an oil top frame; the support comprises triangular frames and an upper cross rod, wherein the triangular frames are provided with two groups, the vertex angles of the two groups of triangular frames are connected through the upper cross rod, and the upper cross rod extends out of one group of triangular frames to be arranged; the lifting unit is arranged on the upper cross rod, and one end of the lifting unit, which is far away from the upper cross rod, is provided with a jack support bracket; the oil top frame is used for placing the oil top and is arranged at the bottom of a group of triangular frames far away from the lifting unit, so that the construction efficiency is greatly improved, the lifting mechanical cost can be greatly saved, and various construction conditions can be better met.
Description
Technical Field
The utility model relates to the technical field of precast T-beam construction, in particular to a movable tensioning device suitable for precast T-beam edges and mid-span hogging moment.
Background
At present, the China highway bridge enters a high-speed development period, most of the current large and medium bridges are prestressed concrete continuous T beams, cast-in-situ continuous sections of the T beams adopt steel strands with specific diameters, and in order to realize construction of bridge hogging moment prestress tensioning, a prestress intelligent tensioning control system is generally used for simultaneously tensioning two ends of the steel strands. The existing T beam hogging moment prestress tensioning construction process generally adopts a 60T hydraulic jack to carry out single tensioning through manual transportation, or adopts a 150T-200T hydraulic jack to carry out whole-beam tensioning through lifting by a climbing vehicle or a crane.
The tensioning of the single steel strand takes time and labor, and the tensioning efficiency is low; along with the increasing height of the bridge, the mode of tensioning by adopting a climbing car or a crane with higher pier column height is also not preferable, the higher the height is, the greater the danger of high-place operation is, and the high-place operation space is greatly limited due to the narrow wet joint space of the prefabricated T beam and the coverage of the tensioning end by the flange plate of the T beam, so that the working efficiency is low and the risk is high.
Therefore, in order to solve the problems, a movable tensioning device suitable for precast T beam edges and midspan hogging moment is provided to solve the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model develops the movable tensioning device suitable for prefabricating the side and middle span hogging moment of the T beam, greatly improves the construction efficiency, can greatly save the hoisting mechanical cost and better satisfies various construction conditions.
The technical scheme for solving the technical problems is as follows: the utility model provides a movable tensioning device suitable for precast T beam edges and mid-span hogging moment, which comprises a bracket, a lifting unit and an oil top frame;
the support comprises triangular frames and an upper cross rod, wherein the triangular frames are provided with two groups, the vertex angles of the two groups of triangular frames are connected through the upper cross rod, and the upper cross rod extends out of one group of triangular frames to be arranged;
the lifting unit is arranged on the upper cross rod, and one end of the lifting unit, which is far away from the upper cross rod, is provided with a jack support bracket;
the oil top frame is used for placing an oil top and is arranged at the bottom of a group of triangular frames far away from the lifting unit;
the lifting unit is connected with the jack support bracket through the telescopic boom, the telescopic boom is detachable and comprises a plurality of sleeves which are sleeved with each other, the sleeves are connected through fixing pins, the jack support bracket comprises a telescopic cross rod, a bearing bottom plate, a push-pull rod, a jack tray and two rotating discs, the telescopic boom is connected with the telescopic cross rod through one rotating disc, the telescopic cross rod is connected with the bearing bottom plate through the other rotating disc, the push-pull rod is arranged on the bearing bottom plate, and the jack tray is arranged on the push-pull rod.
As optimization, set up the bracing piece between apex angle and the base of triangle frame, link to each other through well horizontal pole and the bottom rail that the level set up between the bracing piece of two sets of triangle frames, well horizontal pole is kept away from the one side of oily top frame and is extended the triangle frame setting, and the middle position of well horizontal pole and the bottom rail between two sets of triangle frames is corresponding respectively to be seted up and is worn the pole hole and wear the pole hole down to the cantilever end of well horizontal pole is also seted up and is worn the pole hole.
As an optimization, lifting lugs are arranged at the middle positions of the cantilever ends of the upper cross rod and the upper cross rod between the two groups of triangular frames, when the lifting unit is hung on the lifting lugs of the cantilever ends of the upper cross rod, the telescopic boom penetrates through the upper rod penetrating holes of the cantilever ends of the middle cross rod, and when the lifting unit is hung on the lifting lugs of the middle positions of the upper cross rod between the two groups of triangular frames, the telescopic boom penetrates through the upper rod penetrating holes and the lower rod penetrating holes of the middle cross rod and the lower cross rod between the two groups of triangular frames in sequence.
As optimization, two diagonal rods are symmetrically arranged between the middle cross rod and the lower cross rod, and are connected with the middle cross rod and the lower cross rod in an splayed shape.
As optimization, the bottom surface of the oil top frame is flush with the bottom surfaces of the two groups of triangular frames, and a plurality of universal wheels are arranged.
As optimization, the side of the upper cross rod, which is close to the oil top frame, is horizontally provided with a fastening lifting lug.
The effects provided in the summary of the utility model are merely effects of embodiments, not all effects of the utility model, and the above technical solution has the following advantages or beneficial effects:
1. the lifting jack can be quickly adjusted to the designed elevation position through the lifting unit, the rotating disc and the like, so that the construction efficiency is greatly improved, the hogging moment stretching operation is transferred to the bridge, and the safety of constructors is greatly ensured;
2. the hoisting frame and the matched device formed by the triangular frames are simple and convenient to process, can greatly save hoisting mechanical cost, save cost and are beneficial to cost control;
3. the device can be applied to the hogging moment stretching of different bridge deck systems, has the circularity, not only has the function of stretching the hogging moment of the mid-span, but also can stretch the hogging moment of the side span, and better satisfies various construction conditions.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.
Fig. 1 is a schematic structural diagram of a first embodiment of the present utility model.
Fig. 2 is a schematic structural diagram of a second embodiment of the present utility model.
Fig. 3 is an exploded view of the structure of fig. 1 or fig. 2 at a in accordance with the present utility model.
In the figure, 1, a hoisting unit; 2. a fixing pin; 3. a telescopic boom; 4. an oil top frame; 5. a universal wheel; 6. lifting lugs; 7. fastening the lifting lug; 8. a rotating disc; 9. a telescopic cross bar; 10. a supporting bottom plate; 11. a push-pull rod; 12. a jack tray; 13. an upper cross bar; 14. a middle cross bar; 15. a lower cross bar; 16. a diagonal rod; 17. a support rod; 18. triangle frame; 19. an upper rod penetrating hole; 20. and a rod penetrating hole is formed downwards.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below with reference to the following detailed description and the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily obscure the present utility model. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 3, the movable tensioning device suitable for prefabricating the side and middle span hogging moment of the T beam comprises a bracket, a lifting unit 1 and an oil top frame 4; the support comprises triangular frames 18 and upper cross bars 13, wherein two groups of triangular frames 18 are arranged, the top angles of the two groups of triangular frames 18 are connected through the upper cross bars 13, and the upper cross bars 13 extend out of one group of triangular frames 18 to be arranged; the lifting unit 1 is arranged on the upper cross rod 13, one end of the lifting unit 1, which is far away from the upper cross rod 13, is provided with a jack support bracket, and the lifting unit 1 can be an electric hoist or a manual hoist to adjust the height of a jack; the oil top frame 4 is used for placing the oil top and is arranged at the bottom of a set of triangular frames 18 remote from the hoisting unit 1.
The lifting jack can be quickly adjusted to the designed elevation position through the lifting unit 1, the rotating disc 8 and the like, so that the construction efficiency is greatly improved, the hogging moment stretching operation is transferred to the bridge, and the safety of constructors is greatly ensured; the hoisting frame formed by the triangular frames 18 and the matched device are simple and convenient to process, so that the hoisting mechanical cost can be greatly saved, the cost is saved, and the cost control is facilitated; the device can be applied to the hogging moment stretching of different bridge deck systems, has the circularity, not only has the function of stretching the hogging moment of the mid-span, but also can stretch the hogging moment of the side span, and better satisfies various construction conditions.
In this embodiment, lifting unit 1 passes through flexible jib 3 to be connected jack support bracket, flexible jib 3 is dismantled and assembled, including a plurality of sleeve pipes that cup joint each other, connect through fixed pin 2 between the sleeve pipe, can realize the dismouting when middle, side span hogging moment stretch-draw, jack support bracket includes flexible horizontal pole 9, bearing bottom plate 10, push-and-pull rod 11, jack tray 12 and two rolling discs 8, flexible jib 3 is connected with flexible horizontal pole 9 through a rolling disc 8, flexible horizontal pole 9 is connected with bearing bottom plate 10 through another rolling disc 8, set up push-and-pull rod 11 on the bearing bottom plate 10, set up jack tray 12 on the push-and-pull rod 11.
Embodiment one: as shown in fig. 1, support rods 17 are arranged between the top corners and the bottom edges of the triangular frames 18, the support rods 17 of the two groups of triangular frames 18 are connected with each other through a middle cross rod 14 and a lower cross rod 15 which are horizontally arranged, and upper rod penetrating holes 19 and lower rod penetrating holes 20 are correspondingly formed in the middle positions of the middle cross rod 14 and the lower cross rod 15 between the two groups of triangular frames 18, wherein the middle cross rod 14 and the lower cross rod 15 are used for supporting and reinforcing the two groups of triangular frames 18.
The middle position of the upper cross rod 13 between the two groups of triangular frames 18 is provided with a lifting lug 6, and when the lifting unit 1 is hung on the lifting lug 6 at the middle position of the upper cross rod 13 between the two groups of triangular frames 18, the telescopic boom 3 sequentially passes through the upper through rod hole 19 and the lower through rod hole 20 of the middle cross rod 14 and the lower cross rod 15 between the two groups of triangular frames 18.
Two diagonal rods 16 are symmetrically arranged between the middle cross rod 14 and the lower cross rod 15, the two diagonal rods 16 are connected with the middle cross rod 14 and the lower cross rod 15 in an eight shape, and the middle cross rod 14 and the lower cross rod 15 are reinforced through the diagonal rods 16, so that the overall stability of the frame is ensured.
The oil top frame 4 bottom surface and two sets of triangular frame 18 bottom surfaces parallel and level just all set up a plurality of universal wheels 5, and universal wheel 5 needs to be higher than roof beam pre-buried bar height, realizes removing convenient.
The side of the upper cross rod 13, which is close to the oil top frame 4, is horizontally provided with a fastening lifting lug 7, and when the fastening lifting lug 7 stretches the side span hogging moment, a wind-holding rope and the like can be used for fixing the lifting frame through the fastening lifting lug.
The specific assembly steps are as follows:
(1) Firstly, processing an upper cross bar 13, a middle cross bar 14, a lower cross bar 15, an inclined bar 16, a supporting bar 17, an oil top frame 4 and a symmetrical triangular frame 18 in a construction site, and then welding the upper cross bar 13, the middle cross bar 14, the lower cross bar 15, the inclined bar 16, the supporting bar 17 and the oil top frame 4 into a whole to form a hoisting frame;
(2) Universal wheels 5 are arranged at the bottom of the hoisting frame;
(3) The telescopic cross rod 9 is connected with the bearing bottom plate 10 through the rotating disc 8;
(4) A push-pull rod 11 is welded on the supporting bottom plate 10, and a jack tray 12 is welded on the upper part of the push-pull rod 11 to form a whole;
(5) The jack support bracket is connected with the telescopic boom 3 through a connecting disc 8 to form an L-shaped hoisting system;
(6) The telescopic boom 3 is disassembled, an upper rod penetrates through an upper rod penetrating hole 19 between two groups of triangular frames 18, and a lower rod penetrates through a lower rod penetrating hole 20 between two groups of triangular frames 18 and is connected through a positioning pin 2;
(7) The upper hook of the lifting unit 1 is connected with lifting lugs 6 between two groups of triangular frames 18, and the lower hook is connected with a telescopic boom 3;
(8) Placing the oil roof in the oil roof frame 4;
(9) The jack is fitted into the jack tray 12.
When the device is used, the device is moved to the bridge deck midspan position corresponding to the hogging moment Zhang Lakong, and then the telescopic cross rod 9 and the bearing bottom plate 10 are rotated to the forward direction so as to be convenient to drop; the L-shaped hoisting system is lowered along the expansion joint through the hoisting unit 1, the jack is adjusted to the hogging moment stretching position through the hoisting unit 1, the telescopic cross rod 9, the bearing bottom plate 10 and the push-pull rod 11 for stretching, and the T-beam midspan hogging moment stretching can be achieved by repeating the procedures after stretching.
Embodiment two: as shown in fig. 2, the difference from the above embodiment is that the side of the middle cross bar 14 away from the oil top frame 4 extends out of the triangular frame 18, and the cantilever end of the middle cross bar 14 is also provided with an upper through bar hole 19; the cantilever end of the upper cross bar 13 is provided with a lifting lug 6, when the lifting unit 1 is hung on the lifting lug 6 of the cantilever end of the upper cross bar 13, the telescopic boom 3 passes through the upper penetrating rod hole 19 of the cantilever end of the middle cross bar 14,
the specific assembly steps are as follows:
(1) Firstly, processing an upper cross bar 13, a middle cross bar 14, a lower cross bar 15, an inclined bar 16, a supporting bar 17, an oil top frame 4 and a symmetrical triangular frame 18 in a construction site, and then welding the upper cross bar 13, the middle cross bar 14, the lower cross bar 15, the inclined bar 16, the supporting bar 17 and the oil top frame 4 into a whole to form a hoisting frame;
(2) Universal wheels 5 are arranged at the bottom of the hoisting frame;
(3) The telescopic cross rod 9 is connected with the bearing bottom plate 10 through the rotating disc 8;
(4) A push-pull rod 11 is welded on the supporting bottom plate 10, and a jack tray 12 is welded on the upper part of the push-pull rod 11 to form a whole;
(5) The jack support bracket is connected with the telescopic boom 3 through a connecting disc 8 to form an L-shaped hoisting system;
(6) Penetrating the telescopic boom 3 from an upper boom penetrating hole 19 at the cantilever end of the middle cross bar 14;
(7) The upper hook of the lifting unit 1 is connected with the lifting lug 6 at the cantilever end of the upper cross rod 13, and the lower hook is connected with the telescopic boom 3;
(8) Placing the oil roof in the oil roof frame 4;
(9) Fitting the jack into the jack tray 12;
(10) The wind-collecting rope is penetrated through the fastening lifting lug 7 and is fastened and connected with the bridge deck system embedded bars.
When the device is used, the device is moved to the bridge deck side span position corresponding to the hogging moment Zhang Lakong, and then the telescopic cross rod 9 and the supporting bottom plate 10 are rotated to the forward bridge direction so as to be convenient to drop; the L-shaped hoisting system is lowered along the outer edge of the bridge deck guardrail through the hoisting unit 1, the jack is adjusted to the hogging moment stretching position through the hoisting unit 1, the telescopic cross rod 9, the supporting bottom plate 10 and the push-pull rod 11 for stretching, and the T-beam side span hogging moment stretching can be achieved by repeating the above procedures after stretching.
While the foregoing description of the embodiments of the present utility model has been presented with reference to the drawings, it is not intended to limit the scope of the utility model, but rather, it is apparent that various modifications or variations can be made by those skilled in the art without the need for inventive work on the basis of the technical solutions of the present utility model.
Claims (6)
1. A movable tension device suitable for precast T beam edges and midspan hogging moment is characterized in that: comprises a bracket, a lifting unit (1) and an oil top frame (4);
the support comprises triangular frames (18) and an upper cross bar (13), wherein the triangular frames (18) are arranged in two groups, the top angles of the two groups of triangular frames (18) are connected through the upper cross bar (13), and the upper cross bar (13) extends out of one group of triangular frames (18);
the lifting unit (1) is arranged on the upper cross rod (13), and one end of the lifting unit (1) far away from the upper cross rod (13) is provided with a jack support bracket;
the oil top frame (4) is used for placing an oil top and is arranged at the bottom of a group of triangular frames (18) far away from the lifting unit (1);
lifting unit (1) is connected jack support bracket through flexible jib (3), flexible jib (3) dismantled and assembled, including a plurality of sleeve pipes of cup jointing each other, connect through fixed pin (2) between the sleeve pipe, jack support bracket includes flexible horizontal pole (9), bearing bottom plate (10), push-and-pull rod (11), jack tray (12) and two rolling disc (8), flexible jib (3) are connected with flexible horizontal pole (9) through a rolling disc (8), flexible horizontal pole (9) are connected with bearing bottom plate (10) through another rolling disc (8), set up push-and-pull rod (11) on bearing bottom plate (10), set up jack tray (12) on push-and-pull rod (11).
2. The movable tension device suitable for prefabricating a T-beam edge and a midspan hogging moment according to claim 1, wherein: the support rod (17) is arranged between the top angle and the bottom edge of the triangular frame (18), the support rods (17) of the two groups of triangular frames (18) are connected with the lower cross rod (15) through the middle cross rod (14) which is horizontally arranged, one side, far away from the oil top frame (4), of the middle cross rod (14) extends out of the triangular frame (18), the middle positions of the middle cross rod (14) and the lower cross rod (15) between the two groups of triangular frames (18) are respectively correspondingly provided with an upper rod penetrating hole (19) and a lower rod penetrating hole (20), and the cantilever end of the middle cross rod (14) is also provided with an upper rod penetrating hole (19).
3. The movable tension device suitable for prefabricating a T-beam edge and a midspan hogging moment according to claim 2, wherein: the lifting lug (6) is arranged at the middle position of the upper cross rod (13) between the cantilever end of the upper cross rod (13) and the two groups of triangular frames (18), when the lifting unit (1) is hung on the lifting lug (6) at the cantilever end of the upper cross rod (13), the telescopic boom (3) penetrates through the upper through rod hole (19) of the cantilever end of the middle cross rod (14), and when the lifting unit (1) is hung on the lifting lug (6) at the middle position of the upper cross rod (13) between the two groups of triangular frames (18), the telescopic boom (3) sequentially penetrates through the upper through rod hole (19) and the lower through rod hole (20) of the middle cross rod (14) and the lower cross rod (15) between the two groups of triangular frames (18).
4. The movable tensioning device for precast T-beam edges and mid-span hogging moment according to claim 1 or 2, wherein: two diagonal rods (16) are symmetrically arranged between the middle cross rod (14) and the lower cross rod (15), and the two diagonal rods (16) are connected with the middle cross rod (14) and the lower cross rod (15) in an eight shape.
5. The movable tension device suitable for prefabricating a T-beam edge and a midspan hogging moment according to claim 1, wherein: the bottom surface of the oil top frame (4) is flush with the bottom surfaces of the two groups of triangular frames (18), and a plurality of universal wheels (5) are arranged.
6. The movable tension device suitable for prefabricating a T-beam edge and a midspan hogging moment according to claim 1, wherein: one side of the upper cross rod (13) close to the oil top frame (4) is horizontally provided with a fastening lifting lug (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322131201.2U CN220638385U (en) | 2023-08-09 | 2023-08-09 | Movable tensioning device suitable for precast T beam edge and midspan hogging moment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322131201.2U CN220638385U (en) | 2023-08-09 | 2023-08-09 | Movable tensioning device suitable for precast T beam edge and midspan hogging moment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220638385U true CN220638385U (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322131201.2U Active CN220638385U (en) | 2023-08-09 | 2023-08-09 | Movable tensioning device suitable for precast T beam edge and midspan hogging moment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220638385U (en) |
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2023
- 2023-08-09 CN CN202322131201.2U patent/CN220638385U/en active Active
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