CN216739333U - Combined type external prestress steel strand releasing and tensioning device - Google Patents
Combined type external prestress steel strand releasing and tensioning device Download PDFInfo
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- CN216739333U CN216739333U CN202123350138.9U CN202123350138U CN216739333U CN 216739333 U CN216739333 U CN 216739333U CN 202123350138 U CN202123350138 U CN 202123350138U CN 216739333 U CN216739333 U CN 216739333U
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Abstract
The utility model discloses a modular device is put to external prestressing force steel strand wires, including putting an anchor component, jack supporting member, jack counter-force component and biography power pull rod, put an anchor component and include steel sheet and last steel sheet down, put an inside intermediate position of anchor component and seted up clamping piece installation through-hole, the inside of clamping piece installation through-hole is provided with the clamping piece structure, the inside of clamping piece structure is pegged graft and is had former steel strand wires, put the both sides at an anchor component top and all seted up the mounting hole, the inside of mounting hole is provided with construction bolt. The utility model discloses an put anchor component, jack supporting member, jack counter-force component and pass the power pull rod, make the device can effectively solve because prestressing force steel strand wires seal anchor end working length not enough, lead to the technical problem that can't put one, and install simple structure, safe and reliable, the atress is clear and definite, does not receive the interference, easily installs and uses under complex environments such as job site, respond well.
Description
Technical Field
The utility model relates to a bridge construction field, concretely relates to modular device is put to external prestress wire.
Background
The bridge reinforcing construction generally refers to restoring or improving the bearing capacity of the existing bridge through reinforcing components and improving structural performance so as to prolong the service life of the bridge and meet the requirements of modern transportation, and the reinforcing method comprises cross section reinforcing, steel plate reinforcing, fiber composite material reinforcing, structural system reinforcing change, external prestress reinforcing and the like, wherein the external prestress reinforcing refers to a reinforcing method for improving the stress condition of the original structure by actively applying external force to the existing concrete beam body.
However, when the prestressed steel strand tensioning device is in actual use, for a secondary external prestressed reinforced bridge, an original external prestressed steel strand needs to be replaced and tensioned again, and in the replacement process, the traditional prestressed tensioning device cannot be used due to the fact that the reserved working length of the original steel strand is not enough, and the operation of tensioning the steel strand by a worker is inconvenient.
Therefore, it is necessary to invent a combined type external prestressed steel strand tensioning device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device is put to modular external prestressing force steel strand wires, through putting an anchor component, jack supporting member, jack counter-force component and biography power pull rod, make the device can effectively solve because prestressing force steel strand wires seal anchor end working length not enough, lead to the technical problem that can't put a, and install simple structure, safe and reliable, the atress is clear and definite, does not receive the interference, easily installs and uses under complex environments such as job site, respond well.
In order to realize the purpose that can't put a change because of steel strand wires working length is not enough, the utility model provides a following technical scheme: a combined type external prestress steel strand releasing and tensioning device comprises a releasing and tensioning anchor component, a jack supporting component, a jack counterforce component and a force transmission pull rod, wherein the releasing and tensioning anchor component comprises a lower steel plate and an upper steel plate, a clamping piece mounting through hole is formed in the middle position inside the releasing and tensioning anchor component, a clamping piece structure is arranged inside the clamping piece mounting through hole, an original steel strand is inserted into the clamping piece structure, mounting holes are formed in two sides of the top of the releasing and tensioning anchor component, mounting bolts are arranged inside the mounting holes, positioning through holes are formed in two sides, close to the clamping piece mounting through hole, of the top of the releasing and tensioning anchor component, positioning bolts are inserted into the positioning through holes, first force transmission rod mounting through holes are formed in two sides of the releasing and tensioning anchor component, the jack supporting component is arranged on one side of the releasing and tensioning anchor component, second dowel steel installation through-hole has all been seted up to the inside both sides of jack supporting member, the fixed orifices has all been seted up to the both sides at jack supporting member top, the inside of fixed orifices is provided with the gim peg, jack supporting member one side is provided with jack counter-force component, third dowel steel installation through-hole has all been seted up to the inside both sides of jack counter-force component, the inside of third dowel steel installation through-hole is provided with the biography power pull rod, the outside of biography power pull rod is provided with high strength nut.
Preferably, the clamping piece structure includes thread groove, fixed slot and retainer plate, the inner wall in clamping piece structure is seted up to the thread groove, the fixed slot has been seted up to the one end of clamping piece structure outer wall, the inside of fixed slot is provided with the retainer plate.
Preferably, the number of the clip structures is set to be three, and the three clip structures are distributed in an annular array relative to the central point of the fixing ring.
Preferably, the top of retainer plate is the disconnection setting, the outside of retainer plate and the inboard laminating of fixed slot, the retainer plate is made by special steel material.
Preferably, the number of the force transmission pull rods is two, the two force transmission pull rods are symmetrically distributed about a horizontal center line of the jack reaction member, the force transmission pull rods sequentially penetrate through the third force transmission rod mounting through hole, the second force transmission rod mounting through hole and the first force transmission rod mounting through hole, and the tension anchoring member, the jack supporting member and the jack reaction member are connected in series through the force transmission pull rods.
Preferably, the number of the high-strength nuts is six, two of the high-strength nuts are arranged at the front end of the tension anchoring member, the other two high-strength nuts are arranged at the rear end of the jack supporting member, and the force transmission pull rod is arranged at the rear end of the jack reaction member.
In the technical scheme, the utility model provides a technological effect and advantage:
1. the device can effectively solve the technical problem that the prestressed steel strand cannot be tensioned due to the fact that the working length of the anchor sealing end of the prestressed steel strand is insufficient through the tensioning anchoring component, the jack supporting component, the jack counter-force component and the force transmission pull rod, is simple in structure, safe, reliable, free of interference and good in effect, and is easy to install and use in complex environments such as a construction site.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
FIG. 1 is an overall structure diagram of the present invention;
FIG. 2 is a top sectional view of the present invention;
FIG. 3 is a front sectional view of the present invention;
FIG. 4 is a schematic view of the unfolding structure of the tension releasing anchoring member of the present invention;
FIG. 5 is a right side sectional view of the tension releasing anchoring member of the present invention;
fig. 6 is a schematic view of the expansion structure of the clip structure of the present invention.
Description of reference numerals:
1. releasing an anchoring member; 101. a lower steel plate; 102. steel plate feeding; 2. positioning the bolt; 3. the clamping piece is provided with a through hole; 4. a clip structure; 401. a thread groove; 402. fixing grooves; 403. a stationary ring; 5. raw steel strands; 6. mounting holes; 7. installing a bolt; 8. a fixing bolt; 9. positioning the through hole; 10. the first force transmission rod is provided with a through hole; 11. a jack support member; 12. the second dowel bar is provided with a through hole; 13. a jack reaction member; 14. a third dowel bar mounting through hole; 15. a force transfer pull rod; 16. a high-strength nut; 17. and (7) fixing holes.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
The utility model provides a combined type external prestress steel strand tension releasing device as shown in figures 1-6, which comprises a tension releasing anchoring component 1, a jack supporting component 11, a jack counter-force component 13 and a force transmission pull rod 15, wherein the tension releasing anchoring component 1 comprises a lower steel plate 101 and an upper steel plate 102, a clamping piece mounting through hole 3 is arranged at the middle position inside the tension releasing anchoring component 1, a clamping piece structure 4 is arranged inside the clamping piece mounting through hole 3, an original steel strand 5 is inserted inside the clamping piece structure 4, mounting holes 6 are respectively arranged at both sides of the top of the tension releasing anchoring component 1, a mounting bolt 7 is arranged inside the mounting hole 6, positioning through holes 9 are respectively arranged at both sides of the top of the tension releasing anchoring component 1 close to the clamping piece mounting through hole 3, a positioning bolt 2 is inserted inside the positioning through holes 9, first force transmission rod mounting through holes 10 are respectively arranged at both sides of the inside the tension releasing anchoring component 1, one side of putting a tensile anchor component 1 is provided with jack supporting component 11, second dowel steel installation through-hole 12 has all been seted up to the inside both sides of jack supporting component 11, the fixed orifices 17 has all been seted up to the both sides at jack supporting component 11 top, the inside of fixed orifices 17 is provided with gim peg 8, jack supporting component 11 one side is provided with jack counter-force component 13, third dowel steel installation through-hole 14 has all been seted up to the inside both sides of jack counter-force component 13, the inside of third dowel steel installation through-hole 14 is provided with power transmission pull rod 15, the outside of power transmission pull rod 15 is provided with high strength nut 16.
Further, in the above technical scheme, clip structure 4 includes thread groove 401, fixed slot 402 and retainer plate 403, thread groove 401 is seted up in clip structure 4's inner wall, fixed slot 402 has been seted up to the one end of clip structure 4 outer wall, the inside of fixed slot 402 is provided with retainer plate 403, clip structure 4's quantity sets up to three, three clip structure 4 distributes about the central point annular array of retainer plate 403, the top of retainer plate 403 sets up for the disconnection, the outside of retainer plate 403 and the inboard laminating of fixed slot 402, retainer plate 403 is made by special steel material, through with retainer plate 403 joint inside fixed slot 402, can make three clip structure 4 constitute a wedge-shaped barrel, is convenient for fix former steel strand wires 5.
Further, in the above technical solution, the number of the force transmission pull rods 15 is two, the two force transmission pull rods 15 are symmetrically distributed about a horizontal center line of the jack reaction member 13, the force transmission pull rods 15 sequentially pass through the third force transmission rod mounting through hole 14, the second force transmission rod mounting through hole 12 and the first force transmission rod mounting through hole 10, the relaxation anchoring member 1, the jack support member 11 and the jack reaction member 13 are connected in series by the force transmission pull rods 15, and the high-strength nuts 16 are matched with the first force transmission rod mounting through hole 10, the second force transmission rod mounting through hole 12 and the third force transmission rod mounting through hole 14, so that the whole relaxation device is connected in series to form a whole.
Further, in the above technical solution, the number of the high-strength nuts 16 is set to six, two of the high-strength nuts 16 are arranged at the front end of the tension anchor member 1, the other two high-strength nuts 16 are arranged at the rear end of the jack support member 11, and the two force transmission pull rods 15 are arranged at the rear end of the jack reaction member 13, and the high-strength nuts 16 are tightened by a kilogram wrench, and the high-strength nuts 16 are adjusted under the matching of the high-strength nuts 16 and the force transmission pull rods 15, so that the whole tension device is connected into a whole.
This practical theory of operation:
referring to the attached drawings 1-6 of the specification, firstly, according to the original design drawing, the relevant parameters such as the length, the specification, the tension control stress, the anchor device parameter, the size of the anchor pad block and the like of the external prestressed steel strand are determined, and the field actual situation is combined, a reasonable installation platform is determined, the outer skin of the original steel strand 5 is stripped at the position 20cm behind the original anchor device by adopting a ring cutting pliers, the stripping length is 10cm, the tension releasing anchor member 1 is formed by fixedly connecting a lower steel plate 101 and an upper steel plate 102 through six installation bolts 7, three clamping piece bodies 401 are sleeved at the proper position of one end of the original steel strand 5, then a fixing ring 404 is clamped in a fixing groove 403, and the fixing ring 404 is simultaneously pinched, so that the clamping piece bodies 401 are combined into a wedge-shaped cylinder body, the original steel strand 5 is conveniently fixed, and a clamping piece structure 4 is positioned in a clamping piece installation through hole 3, so that the original steel strand 5 and the tension releasing anchor member 1 are firmly fixed, cutting off part of the exposed original steel strand 5 behind the original anchorage device, punching a hole at the bottom of the beam, fixing a jack support member 11 at the bottom of the beam by adopting two fixing bolts 8 through a reserved hole 17, aligning a first transmission rod mounting through hole 10, a second transmission rod mounting through hole 12 and a third transmission rod mounting through hole 14 in the bridge direction so that a transmission pull rod 15 can pass through the jack support member, serially connecting a tension releasing anchorage member 1, the jack support member 11 and a jack counterforce member 13 into a whole through the transmission pull rod 15, dividing six high-strength nuts 16 into three groups while mounting the transmission pull rod 15, wherein two high-strength nuts 16 are sleeved on the outer wall of the transmission pull rod 15 and are arranged at the rear end of the jack counterforce member 13, the other two high-strength nuts 16 are sleeved on the outer wall of the transmission pull rod 15 and are arranged at the rear end of the jack support member 11, and the two high-strength nuts 16 are sleeved on the outer wall of the transmission pull rod 15 and are arranged at the front end of the tension releasing anchorage member 1, fixing the whole tension releasing device and the jack by using a kilogram spanner high-strength nut 16;
referring to the attached drawings 1-6 of the specification, when the device is fixed, attention is paid to the fact that the distance between high-strength nuts 16 at different positions of two force transmission pull rods 15 is required to be kept consistent to guarantee that the stress and the expansion amount of the two force transmission pull rods 15 are consistent when a jack works, the distance between a jack supporting member 11 and a jack counter-force member 13 is determined by combining the size of the jack and the retraction amount of an original steel strand 5 after the jack is expanded, the expansion of a single steel strand adopts a single-end expansion form, the jack slowly applies force to stress the whole expansion device, the stress control jacking jack is adopted to unload the original steel strand 5 at the front end of the expansion anchoring member 1, the two high-strength nuts 16 at the rear end of the jack supporting member 11 are locked, the original steel strand 5 between the expansion anchoring member 1 and an original anchor is cut by an angle grinder, the jack applies force properly after the original steel strand 5 is cut, the high-strength nut 16 at the rear end of the jack supporting member 11 is retracted, and (4) retreating the high-strength nut 16 every time for about 1cm, slowly returning oil by the jack, and repeating the steps until the tension releasing is finished.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (6)
1. The utility model provides a device is put to external prestressing steel strand wires of modular, is including putting a anchor component (1), jack supporting member (11), jack reaction member (13) and biography power pull rod (15), its characterized in that: the tension anchor component (1) comprises a lower steel plate (101) and an upper steel plate (102), a clip installation through hole (3) is formed in the middle of the interior of the tension anchor component (1), a clip structure (4) is arranged in the clip installation through hole (3), an original steel strand (5) is inserted in the clip structure (4), installation holes (6) are formed in two sides of the top of the tension anchor component (1), an installation bolt (7) is arranged in the installation hole (6), positioning through holes (9) are formed in two sides of the top of the tension anchor component (1) close to the clip installation through hole (3), a positioning bolt (2) is inserted in the positioning through hole (9), first transmission rod installation through holes (10) are formed in two sides of the interior of the tension anchor component (1), and a jack support component (11) is arranged on one side of the tension anchor component (1), second dowel steel installation through-hole (12) have all been seted up to the inside both sides of jack supporting member (11), fixed orifices (17) have all been seted up to the both sides at jack supporting member (11) top, the inside of fixed orifices (17) is provided with gim peg (8), jack supporting member (11) one side is provided with jack reaction member (13), third dowel steel installation through-hole (14) have all been seted up to the inside both sides of jack reaction member (13), the inside of third dowel steel installation through-hole (14) is provided with biography power pull rod (15), the outside of biography power pull rod (15) is provided with high strength nut (16).
2. The combined type external prestress steel strand tensioning device according to claim 1, wherein: the clamping piece structure (4) comprises a thread groove (401), a fixing groove (402) and a fixing ring (403), the thread groove (401) is arranged on the inner wall of the clamping piece structure (4), the fixing groove (402) is formed in one end of the outer wall of the clamping piece structure (4), and the fixing ring (403) is arranged inside the fixing groove (402).
3. The combined type external prestress steel strand tensioning device according to claim 2, wherein: the number of the clamping piece structures (4) is set to be three, and the three clamping piece structures (4) are distributed in an annular array mode about the center point of the fixing ring (403).
4. The combined type external prestress steel strand tensioning device according to claim 2, wherein: the top of the fixing ring (403) is arranged in a disconnecting mode, the outer side of the fixing ring (403) is attached to the inner side of the fixing groove (402), and the fixing ring (403) is made of special steel materials.
5. The combined type external prestress steel strand tensioning device according to claim 1, wherein: the number of biography power pull rod (15) sets up to two, two biography power pull rod (15) are about the horizontal central line symmetric distribution of jack reaction component (13), pass third dowel steel installation through-hole (14), second dowel steel installation through-hole (12) and first dowel steel installation through-hole (10) in proper order in biography power pull rod (15), stretch-releasing anchor component (1), jack supporting member (11) and jack reaction component (13) are by biography power pull rod (15) series connection.
6. The combined type external prestress steel strand tensioning device according to claim 1, wherein: the number of the high-strength nuts (16) is six, two of the high-strength nuts (16) are arranged at the front end of the tension anchor member (1), the other two high-strength nuts (16) are arranged at the rear end of the jack supporting member (11), and the force transmission pull rods (15) are arranged at the rear end of the jack reaction member (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123350138.9U CN216739333U (en) | 2021-12-28 | 2021-12-28 | Combined type external prestress steel strand releasing and tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123350138.9U CN216739333U (en) | 2021-12-28 | 2021-12-28 | Combined type external prestress steel strand releasing and tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216739333U true CN216739333U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123350138.9U Active CN216739333U (en) | 2021-12-28 | 2021-12-28 | Combined type external prestress steel strand releasing and tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216739333U (en) |
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2021
- 2021-12-28 CN CN202123350138.9U patent/CN216739333U/en active Active
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Address after: 710065 Room 508, Block A, Tuspark, No. 65, Keji Second Road, High tech Zone, Xi'an, Shaanxi Patentee after: Shaanxi Traffic Control Kaida Road and Bridge Engineering Construction Co.,Ltd. Address before: 710000 room 510, block a, tus science and Technology Plaza, Keji Second Road, high tech Zone, Xi'an City, Shaanxi Province Patentee before: SHAANXI KAIDA HIGHWAY BRIDGE CONTRUCTION CO.,LTD. |