CN220267240U - Single tensioning device for prestressed tendons - Google Patents
Single tensioning device for prestressed tendons Download PDFInfo
- Publication number
- CN220267240U CN220267240U CN202321737007.2U CN202321737007U CN220267240U CN 220267240 U CN220267240 U CN 220267240U CN 202321737007 U CN202321737007 U CN 202321737007U CN 220267240 U CN220267240 U CN 220267240U
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- positioning
- side wall
- tensioning
- support plate
- tension
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- 210000002435 tendon Anatomy 0.000 title claims abstract description 44
- 210000000078 claw Anatomy 0.000 claims abstract description 29
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Reinforcement Elements For Buildings (AREA)
Abstract
The utility model discloses a single tensioning device of a prestressed tendon, which relates to the technical field of tensioning of the prestressed tendon and comprises the following components: the locating support plate, the locating hole has been seted up to the lateral wall face of locating support plate, and stretch-draw power structure is installed to the lateral wall face of locating support plate, and stretch-draw power structure's internally mounted has stretch-draw claw structure, and location handle structure is installed to the upper wall face of locating support plate, and stretch-draw power structure includes: two pressure force measuring meters, two hydraulic cylinders and a tension plate; the two pressure force measuring devices are respectively arranged on the side wall surfaces of the positioning support plates, the prestress ribs are clamped by the variable friction force, and the clamping friction force is continuously increased in the tensioning process of the prestress ribs, so that the effect of stably clamping the prestress ribs is achieved.
Description
Technical Field
The utility model relates to the technical field of prestressed tendon tensioning, in particular to a single prestressed tendon tensioning device.
Background
The tendons are usually made up of individual or bundled wires, strands or bars. In pretensioning production, screw bars, scored steel wires or steel strands are generally used for reliable bonding to concrete. In post-tensioning production, plain steel bars, plain steel wires or steel strands are adopted and are divided into unbonded prestressed tendons and bonded prestressed tendons.
Most of the existing prestressed tendon tensioning devices clamp the prestressed tendons by adopting constant friction force, but when the tension is larger than the constant friction force, the clamping device can slide from the outside of the prestressed tendons, so that the prestressed tendons reach a set tension threshold value, and most of the existing prestressed tendon tensioning devices are quite heavy, so that operators are very laborious to use and inconvenient to operate.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides a single prestressed tendon tensioning device. According to the utility model, the prestress rib is clamped by the variable friction force, and the clamping friction force is continuously increased in the tensioning process of the prestress rib, so that the effect of stably clamping the prestress rib is achieved.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a tendon single tensioning device comprising: the positioning support plate is provided with positioning holes on the side wall surface, a tensioning power structure is arranged on the side wall surface of the positioning support plate, a tensioning claw structure is arranged in the tensioning power structure, and a positioning handle structure is arranged on the upper wall surface of the positioning support plate.
The utility model is further arranged that the tension power structure comprises: two pressure force measuring meters, two hydraulic cylinders and a tension plate; the two pressure force measuring devices are respectively arranged on the side wall surfaces of the positioning support plates, the two hydraulic cylinders are respectively arranged on the side wall surfaces of the two pressure force measuring devices, the tension plate is arranged on the side wall surfaces of the two hydraulic cylinders, and the side wall surfaces of the tension plate are provided with conical holes.
The utility model is further arranged that the tensioning jaw structure comprises: four tension claws and tension rings; the four tension claws are respectively arranged on the inner walls of the taper holes on the side wall surfaces of the tension plates, the tension rings are arranged on the side wall surfaces of the four tension claws, and the taper of the four tension claws is consistent with that of the taper holes on the side wall surfaces of the tension plates.
The utility model is further arranged that the positioning handle structure comprises: two positioning handle support columns, a positioning handle shaft and a positioning handle roller; the two positioning handle support columns are respectively arranged on the upper wall surface of the positioning support plate, the positioning handle shaft is arranged between the two positioning handle support columns, and the positioning handle is sleeved outside the positioning handle shaft in a rolling mode.
The utility model further provides that the side wall surface of the positioning support plate is provided with a plurality of friction nails.
The utility model further provides that the side wall surface of the positioning support plate is provided with two gaskets.
The utility model further provides that the upper wall surface of the tension plate is provided with an alignment handle.
The beneficial effects of the utility model are as follows: according to the utility model, the prestress rib is clamped by the variable friction force, and the clamping friction force is continuously increased in the tensioning process of the prestress rib, so that the effect of stably clamping the prestress rib is achieved.
1. This a single stretching device for prestressing tendons through being provided with stretch-draw power structure, and stretch-draw power structure can carry out the power supply of stretch-draw to prestressing tendons, carries out stable pulling force output through hydraulic pressure to test hydraulic pressure pulling force through dynamometer device, thereby guarantee that prestressing tendons are accurately stretched.
2. According to the single tensioning device for the prestressed tendons, the tensioning claw structure is arranged, the prestressed tendons can be fixed by the tensioning claw structure, and the tensioning claw structure can grasp the prestressed tendons more stably by continuously outputting tension on the tensioning power structure, so that the prestressed tendons can be tensioned stably.
3. According to the single tensioning device for the prestressed tendons, the positioning handle structure is arranged, so that an operator can assist in positioning the support plate to find and position, and the prestressed tendons can be conveniently fixed.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a single tendon tensioning device according to the present utility model;
FIG. 2 is a schematic diagram of a tensioning power knot structure of a single tensioning device for prestressed tendons according to the present utility model;
FIG. 3 is a schematic drawing of the tensioning claw structure of a single tensioning device for prestressed tendons;
fig. 4 is a schematic diagram of a positioning bracket plate structure of a single prestressed tendon tensioning device.
In the figure: 1. positioning a support plate; 2. a pressure dynamometer; 3. a hydraulic cylinder; 4. a tension plate; 5. a tension claw; 6. a tension ring; 7. positioning a handle support column; 8. positioning a handle shaft; 9. positioning a handle roll; 10. friction nails; 11. a gasket; 12. aligning the handle.
Detailed Description
The technical scheme of the patent is further described in detail below with reference to the specific embodiments.
Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the patent and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the patent.
In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.
Referring to fig. 1-4, a tendon single tensioning apparatus includes: the locating support plate 1, locating holes are formed in the side wall surface of the locating support plate 1, a tensioning power structure is arranged on the side wall surface of the locating support plate 1, tensioning claw structures are arranged in the tensioning power structure, locating handle structures are arranged on the upper wall surface of the locating support plate 1, a plurality of friction nails 10 are arranged on the side wall surface of the locating support plate 1, and two gaskets 11 are arranged on the side wall surface of the locating support plate 1.
Specifically, the tensioning power structure includes: two pressure force measuring gauges 2, two hydraulic cylinders 3 and a tension plate 4; two pressure dynamometers 2 are installed respectively at the lateral wall face of location mounting panel 1, and two pneumatic cylinders 3 are installed respectively at the lateral wall face of two pressure dynamometers 2, and the tapered hole has been seted up to the lateral wall face of pulling force board 4, and alignment handle 12 is installed to the upper wall face of pulling force board 4, and tensioning power structure can carry out tensile power source to the tendon, carries out stable pulling force output through the hydraulic pressure to test hydraulic tension through the dynamometer device, thereby guarantee that the tendon is accurately tensioned.
Specifically, the tensioning jaw structure includes: four tension claws 5 and tension rings 6; the four tension claws 5 are respectively arranged on the inner walls of the conical holes on the side wall surfaces of the tension plates 4, the tension rings 6 are arranged on the side wall surfaces of the four tension claws 5, the taper of the four tension claws 5 is consistent with that of the conical holes on the side wall surfaces of the tension plates 4, the tensioning claw structure can fix the prestressed tendons, and the tension claw structure can grasp the prestressed tendons more stably when the tension power structure continuously outputs tension, so that the utility model can stably tension the prestressed tendons.
Specifically, the positioning handle structure includes: two positioning handle support posts 7, a positioning handle shaft 8 and a positioning handle roller 9; the two positioning handle support columns 7 are respectively arranged on the upper wall surface of the positioning support plate 1, the positioning handle shaft 8 is arranged between the two positioning handle support columns 7, the positioning handle roller 9 is sleeved outside the positioning handle shaft 8, and the positioning handle structure can enable an operator to assist the positioning support plate 1 to find and position, so that the prestress rib is convenient to fix.
Working principle: an operator firstly inserts an external computer into the utility model, can record the numerical values of the two pressure force measuring meters 2 at any time, sets a threshold value in the computer through the pre-calculation, then holds the two hands of the operator outside the positioning handle roller 9 and the alignment handle 12 respectively, the operator sleeves the positioning hole of the positioning support plate 1 outside the prestressed tendon, sleeves the taper hole of the tension plate 4 outside the prestressed tendon, and makes the side wall surface of the positioning support plate 1 lean against one side of the concrete, wherein a plurality of friction nails 10 and two gaskets 11 are arranged between the concrete and the positioning support plate 1, the friction nails 10 play a role of increasing the friction force to prevent the positioning support plate 1 from position deviation, the two gaskets 11 can prevent the positioning support plate 1 from crushing the concrete, the four pulling claws 5 and the pulling ring 6 are sleeved outside the prestress rib from one end of the prestress rib, the four pulling claws 5 lean against the inside of the taper hole of the pulling plate 4, then the two hydraulic cylinders 3 are started by an operator, the two hydraulic cylinders 3 start to stretch out to drive the pulling plate 4 to move, the pulling plate 4 continuously moves outside the four pulling claws 5, the four pulling claws 5 compress towards the axis until the four pulling claws 5 grip the prestress rib, the two hydraulic cylinders 3 continuously stretch out, the prestress rib is continuously stretched under the action of the four pulling claws 5, the numerical values of the two pressure force gauges 2 continuously climb until the threshold value set by a computer is reached, then the two hydraulic cylinders 3 stop stretching and start to shrink, and then the operator completes the stretching work of the prestress rib.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (7)
1. A tendon single tensioning device comprising: the positioning support plate (1) is characterized in that a positioning hole is formed in the side wall surface of the positioning support plate (1), a tensioning power structure is arranged on the side wall surface of the positioning support plate (1), a tensioning claw structure is arranged in the tensioning power structure, and a positioning handle structure is arranged on the upper wall surface of the positioning support plate (1).
2. A tendon single tensioning apparatus as claimed in claim 1 in which the tensioning power structure includes: two pressure force measuring meters (2), two hydraulic cylinders (3) and a tension plate (4);
the two pressure dynamometers (2) are respectively arranged on the side wall surfaces of the positioning support plate (1), the two hydraulic cylinders (3) are respectively arranged on the side wall surfaces of the two pressure dynamometers (2), the tension plate (4) is arranged on the side wall surfaces of the two hydraulic cylinders (3), and the side wall surfaces of the tension plate (4) are provided with conical holes.
3. A tendon single tensioning apparatus as claimed in claim 1 in which the tensioning jaw structure includes: four tension claws (5) and tension rings (6);
the four pulling force claws (5) are respectively arranged on the inner wall of the conical hole on the side wall surface of the pulling force plate (4), the pulling force ring (6) is arranged on the side wall surface of the four pulling force claws (5), and the taper of the four pulling force claws (5) is consistent with the taper of the conical hole on the side wall surface of the pulling force plate (4).
4. A tendon single tensioning apparatus as claimed in claim 1 in which said positioning handle structure includes: two positioning handle support columns (7), a positioning handle shaft (8) and a positioning handle roller (9);
the two positioning handle support columns (7) are respectively arranged on the upper wall surface of the positioning support plate (1), the positioning handle shaft (8) is arranged between the two positioning handle support columns (7), and the positioning handle roller (9) is sleeved outside the positioning handle shaft (8).
5. The single prestressed tendon tensioning device according to claim 1, wherein a plurality of friction nails (10) are mounted on the side wall surface of the positioning support plate (1).
6. A single tendon tensioning device as claimed in claim 1 in which two shims (11) are mounted to the side wall of the spacer bracket plate (1).
7. A single tendon tensioning device as claimed in claim 2 in which the upper wall of the tension plate (4) is provided with an alignment handle (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321737007.2U CN220267240U (en) | 2023-07-05 | 2023-07-05 | Single tensioning device for prestressed tendons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321737007.2U CN220267240U (en) | 2023-07-05 | 2023-07-05 | Single tensioning device for prestressed tendons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220267240U true CN220267240U (en) | 2023-12-29 |
Family
ID=89320021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321737007.2U Active CN220267240U (en) | 2023-07-05 | 2023-07-05 | Single tensioning device for prestressed tendons |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220267240U (en) |
-
2023
- 2023-07-05 CN CN202321737007.2U patent/CN220267240U/en active Active
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