CN214786101U - Integral tensioning device for arc flat anchor of steel plate combination beam - Google Patents
Integral tensioning device for arc flat anchor of steel plate combination beam Download PDFInfo
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- CN214786101U CN214786101U CN202120919371.5U CN202120919371U CN214786101U CN 214786101 U CN214786101 U CN 214786101U CN 202120919371 U CN202120919371 U CN 202120919371U CN 214786101 U CN214786101 U CN 214786101U
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- hydraulic jack
- plate
- connecting plate
- chuck
- oil pipe
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Abstract
The utility model discloses a steel plate combination beam arc flat anchor integral tensioning device, which comprises a hydraulic jack and a fastening mechanism; a hydraulic jack: the hydraulic jack is a double-oil-cylinder hydraulic jack, a jack connecting plate is arranged at the left end of the hydraulic jack, a supporting plate is arranged at the left end of the jack connecting plate, threading holes are uniformly formed in the middle of the left side face of the supporting plate, round holes corresponding to the threading holes are uniformly formed in the middle of the jack connecting plate, two pistons of the hydraulic jack are fixedly connected with the left side face of the connecting plate, and through holes corresponding to the threading holes are uniformly formed in the middle of the connecting plate; a fastening mechanism: the right side surface of the connecting plate is provided with a connecting hole; wherein: still include first oil pipe and second oil pipe, first oil pipe and second oil pipe all set up in hydraulic jack's upper end, and this whole tensioning equipment of steel sheet combination beam arc flat anchor carries out holistic stretch-draw to the steel strand wires, avoids the steel strand wires to produce the uneven phenomenon of stress distribution after stretch-draw.
Description
Technical Field
The utility model relates to a concrete engineering technical field specifically is the whole tensioning equipment of steel sheet combination beam arc flat anchor.
Background
The prestressed concrete engineering is a construction process of applying compressive stress to a tensile area under the action of an external load in advance before the structure bears the external load so as to improve the structural use performance, the construction of the prestressed concrete mainly comprises a pre-tensioning method, a post-tensioning method, a non-bonding prestressed construction process and the like, the pre-tensioning method is that a prestressed steel bar is tensioned firstly before a concrete member is poured, the prestressed steel bar is temporarily anchored on a pedestal or a steel die, then the concrete member is poured, when the concrete reaches a certain strength and enough bonding force exists between the prestressed steel bar and the concrete, the prestress is released, the prestressed steel bar retracts elastically and generates the pre-compressive stress to the concrete, the pre-tensioning method is mainly used for producing and shaping medium and small members in a prefabricated member factory, when the post-tensioning method is used for producing the members, a pore channel is reserved in advance at the position where the prestressed steel bar is placed, and when the concrete reaches the specified strength, the prestressed steel bars penetrate into the pore channels, the prestressed steel bars are clamped by a tensioning device and tensioned to control stress specified by design, then the prestressed steel bar anchors are arranged at the end parts of the members by means of anchorage devices, and finally pore channel grouting is carried out.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide the whole tensioning equipment of steel sheet combination beam arc flat anchor, carry out holistic stretch-draw to steel strand wires, avoid steel strand wires to produce the uneven phenomenon of stress distribution after the stretch-draw, the steel strand wires centre gripping is more firm, and after the stretch-draw was accomplished, the spring-assisted clamp plate resets in addition, makes things convenient for the device to take out, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: the integral tensioning device for the arc flat anchor of the steel plate composite beam comprises a hydraulic jack and a fastening mechanism;
a hydraulic jack: the hydraulic jack is a double-oil-cylinder hydraulic jack, a jack connecting plate is arranged at the left end of the hydraulic jack, a supporting plate is arranged at the left end of the jack connecting plate, threading holes are uniformly formed in the middle of the left side face of the supporting plate, round holes corresponding to the threading holes are uniformly formed in the middle of the jack connecting plate, two pistons of the hydraulic jack are fixedly connected with the left side face of the connecting plate, and through holes corresponding to the threading holes are uniformly formed in the middle of the connecting plate;
a fastening mechanism: the right side surface of the connecting plate is provided with a connecting hole;
wherein: still include first oil pipe and second oil pipe, first oil pipe and second oil pipe all set up in hydraulic jack's upper end, and first oil pipe and second oil pipe all communicate with hydraulic jack's two hydro-cylinders are inside, carry out holistic stretch-draw to the steel strand wires, avoid the steel strand wires to produce the uneven phenomenon of stress distribution after the stretch-draw, and the steel strand wires centre gripping is more firm, and the stretch-draw is accomplished the back, and the spring-assisted pressing plate resets in addition, makes things convenient for the device to take out.
Further, fastening device includes anchor slab, bolt, chuck, clamp plate and bell mouth, the anchor slab sets up in the right flank of connecting plate, and the middle part of anchor slab evenly is provided with the bell mouth that corresponds with the through-hole, and two bolts pass the symmetrical via hole that sets up of clamp plate front end and with the screw hole threaded connection that sets up of anchor slab right flank front and back symmetry, and the middle part of clamp plate has the chuck through the fixture block joint of evenly setting, the equal symmetry of right-hand member of chuck be provided with fixture block complex opening, conveniently carry out holistic stretch-draw to the steel strand wires.
Further, the chuck and the bell mouth cooperation set up, and the left end of chuck is the toper, and the impartial angle in left end of chuck is provided with the bar and leads to the groove. The steel strand can be conveniently clamped and fixed.
Furthermore, the inside of chuck all is provided with the arc wall that corresponds with the through-hole, and the inner wall impartial interval of arc wall is provided with the tooth, makes the steel strand wires centre gripping more firm.
Further, the right side of anchor slab is preceding the back symmetry and is provided with the mounting groove, and the inside of two mounting grooves all is provided with the spring, and the right-hand member of two springs all contacts with the clamp plate, and supplementary clamp plate resets.
Furthermore, the openings of the threading holes and the through holes are provided with arc chamfers, so that the steel strand is prevented from being scratched.
Compared with the prior art, the beneficial effects of the utility model are that: this whole tensioning equipment of steel sheet combination beam arc flat anchor has following benefit:
the steel strand penetrates through the threading hole and the through hole and finally penetrates out of the interior of the chuck, the chuck is not in contact with the inner wall of the tapered hole at the moment, then the two bolts are synchronously rotated through the wrench, the pressing plate moves leftwards, the chuck moves leftwards along the tapered hole at the same time until the arc-shaped groove in the chuck is in contact with the steel strand, the chuck is in contact with the inner wall of the tapered hole at the moment, external hydraulic oil is synchronously injected into the two oil cylinders of the hydraulic jack through the first oil pipe, two pistons of the hydraulic jack synchronously move to drive the connecting plate and the anchor plate to move rightwards, teeth in the chuck are in contact with the steel strand to increase the friction force between the chuck and the steel strand, as the left end of the chuck is uniformly provided with the strip-shaped through grooves, under the restriction of the tapered hole in the middle of the anchor plate, the hole diameter of the left end of the chuck gradually decreases to fix the steel strand more and more tightly, and the piston of the hydraulic jack continues to move rightwards to integrally stretch the steel strand, the phenomenon that the stress distribution of the steel strand is uneven after tensioning is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the fastening mechanism of the present invention;
fig. 3 is a schematic view of a partial cross-sectional structure of the fastening mechanism of the present invention.
In the figure: the hydraulic jack comprises a hydraulic jack 1, a fastening mechanism 2, an anchor plate 21, a mounting groove 22, a bolt 23, a spring 24, a chuck 25, a strip-shaped through groove 251, a tooth 252, a pressing plate 26, a conical hole 27, a jack connecting plate 3, a support plate 4, a threading hole 5, a first oil pipe 6, a second oil pipe 7, a connecting plate 8, a through hole 9 and a fixture block 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present embodiment provides a technical solution: the integral tensioning device for the arc flat anchor of the steel plate composite beam comprises a hydraulic jack 1 and a fastening mechanism 2;
hydraulic jack 1: the hydraulic jack is a double-oil-cylinder hydraulic jack and provides driving force for tensioning, a jack connecting plate 3 is arranged at the left end of a hydraulic jack 1, a support plate 4 is arranged at the left end of the jack connecting plate 3 and is convenient to connect with an external mechanism, threading holes 5 are uniformly formed in the middle of the left side face of the support plate 4, round holes corresponding to the threading holes 5 are uniformly formed in the middle of the jack connecting plate 3, two pistons of the hydraulic jack 1 are fixedly connected with the left side face of a connecting plate 8, and through holes 9 corresponding to the threading holes 5 are uniformly formed in the middle of the connecting plate 8 so as to facilitate limiting of steel strands;
the fastening mechanism 2: the fastening mechanism 2 comprises an anchor plate 21, bolts 23, chucks 25, a pressure plate 26 and tapered holes 27, the anchor plate 21 is arranged on the right side surface of the connecting plate 8, the middle part of the anchor plate 21 is uniformly provided with the tapered holes 27 corresponding to the through holes 9, the two bolts 23 penetrate through holes symmetrically arranged at the front end of the pressure plate 26 and are in threaded connection with threaded holes symmetrically arranged at the front and the back of the right side surface of the anchor plate 21, the chucks 25 are clamped at the middle part of the pressure plate 26 through clamping blocks 10 uniformly arranged, openings matched with the clamping blocks 10 are symmetrically arranged at the right end of the chucks 25, the chucks 25 are matched with the tapered holes 27, the left end of each chuck 25 is conical, strip-shaped through grooves 251 are arranged at equal angles at the left end of each chuck 25, arc-shaped grooves corresponding to the through holes 9 are arranged in the interior of each chuck 25, teeth 252 are arranged at equal intervals on the inner walls of the arc-shaped grooves, mounting grooves 22 are symmetrically arranged at the front and the back of the right side surface of the anchor plate 21, springs 24 are arranged inside the two mounting grooves 22, the right ends of the two springs 24 are in contact with a pressing plate 26, a steel strand penetrates through the threading hole 5 and the through hole 9 and finally penetrates out of the interior of the chuck 25, at the moment, the chuck 25 is not in contact with the inner wall of the tapered hole 27, then the two bolts 23 are synchronously rotated through a wrench, the pressing plate 26 moves leftwards, the chuck 25 moves leftwards along the tapered hole 27 at the same time until an arc-shaped groove in the chuck 25 is in contact with the steel strand, at the moment, the chuck 25 is in contact with the inner wall of the tapered hole 27, external hydraulic oil is synchronously injected into the two oil cylinders of the hydraulic jack 1 through the first oil pipe 6, two pistons of the hydraulic jack 1 synchronously move to drive the connecting plate 8 and the anchor plate 21 to move rightwards, teeth 252 in the chuck 25 are in contact with the steel strand, the friction force between the chuck 25 and the steel strand is increased, and strip-shaped through grooves 251 are uniformly arranged at the left end of the chuck 25, under the restriction of a conical hole 27 in the middle of an anchor plate 21, the hole diameter of the left end of a chuck 25 is gradually reduced, so that a steel strand is fixed more and more tightly, a piston of a hydraulic jack 1 continues to move rightwards to integrally stretch the steel strand, the phenomenon that the stress distribution of the steel strand is uneven after stretching is avoided, after stretching is completed, the piston in the hydraulic jack 1 drives a connecting plate 8 and the anchor plate 21 to move leftwards, a pressing plate 26 drives the chuck 25 to move rightwards under the elastic force of a spring 24 in an installation groove 22, the chuck 25 is separated from the conical hole 27, the hole diameter of the left end of the chuck 25 is recovered and separated from the steel strand, and then the device is taken down;
wherein: still include first oil pipe 6 and second oil pipe 7, first oil pipe 6 and second oil pipe 7 all set up in hydraulic jack 1's upper end, first oil pipe 6 and second oil pipe 7 all with the inside intercommunication of two hydro-cylinders of hydraulic jack 1, first oil pipe 6 and second oil pipe 7 and outside hydraulic oil intercommunication, conveniently control hydraulic jack 1 work.
Wherein: the openings of the threading holes 5 and the through holes 9 are provided with arc chamfers, so that the steel strand is prevented from being scratched.
The utility model provides a whole tensioning equipment of steel sheet combination beam arc flat anchor's theory of operation as follows: the hydraulic jack 1 is moved to a proper position through an external hoisting device, a steel strand penetrates through a threading hole 5 and a through hole 9 and finally penetrates out of the interior of a chuck 25, the chuck 25 is not contacted with the inner wall of a tapered hole 27 at the moment, then two bolts 23 are synchronously rotated through a wrench, a pressing plate 26 moves leftwards, the chuck 25 moves leftwards along the tapered hole 27 at the same time until an arc-shaped groove in the chuck 25 is contacted with the steel strand, the chuck 25 is contacted with the inner wall of the tapered hole 27 at the moment, external hydraulic oil is synchronously injected into two oil cylinders of the hydraulic jack 1 through a first oil pipe 6, two pistons of the hydraulic jack 1 synchronously move to drive a connecting plate 8 and an anchor plate 21 to move rightwards, teeth 252 in the chuck 25 are contacted with the steel strand, the friction force between the chuck 25 and the steel strand is increased, strip-shaped through grooves 251 are uniformly arranged at the left end of the chuck 25, and are limited by the tapered hole 27 in the middle of the anchor plate 21, the left end aperture of the chuck 25 is gradually reduced to enable the steel strand to be fixed more and more tightly, the piston of the hydraulic jack 1 continues to move rightwards to stretch the steel strand integrally, after stretching is completed, the two bolts 23 are loosened, external hydraulic oil is synchronously injected into the two oil cylinders of the hydraulic jack 1 through the second oil pipe 7, accordingly, the hydraulic oil in the oil cylinders is discharged from the first oil pipe 6, the piston in the hydraulic jack 1 drives the connecting plate 8 and the anchor plate 21 to move leftwards, the clamp plate 26 drives the chuck 25 to move rightwards under the elastic force of the spring 24 in the mounting groove 22, the chuck 25 is separated from the tapered hole 27, the aperture of the left end of the chuck 25 is recovered and separated from the steel strand, and then the device is taken down.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (6)
1. The integral tension device for the arc flat anchor of the steel plate composite beam is characterized in that: comprises a hydraulic jack (1) and a fastening mechanism (2);
hydraulic jack (1): the hydraulic jack is a double-oil-cylinder hydraulic jack, a jack connecting plate (3) is arranged at the left end of a hydraulic jack (1), a supporting plate (4) is arranged at the left end of the jack connecting plate (3), threading holes (5) are uniformly formed in the middle of the left side face of the supporting plate (4), round holes corresponding to the threading holes (5) are uniformly formed in the middle of the jack connecting plate (3), two pistons of the hydraulic jack (1) are fixedly connected with the left side face of a connecting plate (8), and through holes (9) corresponding to the threading holes (5) are uniformly formed in the middle of the connecting plate (8);
fastening mechanism (2): is arranged on the right side surface of the connecting plate (8);
wherein: still include first oil pipe (6) and second oil pipe (7), first oil pipe (6) and second oil pipe (7) all set up in the upper end of hydraulic jack (1), first oil pipe (6) and second oil pipe (7) all with the inside intercommunication of two hydro-cylinders of hydraulic jack (1).
2. The integral tensioning device for the arc flat anchor of the steel plate combination beam as claimed in claim 1, wherein: fastening device (2) include anchor plate (21), bolt (23), chuck (25), clamp plate (26) and bell mouth (27), anchor plate (21) set up in the right flank of connecting plate (8), and the middle part of anchor plate (21) evenly is provided with bell mouth (27) that correspond with through-hole (9), and two bolt (23) pass the through-hole that clamp plate (26) front end symmetry set up and with the screw hole threaded connection that anchor plate (21) right flank front and back symmetry set up, and the middle part of clamp plate (26) has chuck (25) through fixture block (10) joint of evenly setting up, and the right-hand member of chuck (25) is the symmetry all be provided with fixture block (10) complex opening.
3. The integral tensioning device for the arc flat anchor of the steel plate combination beam as claimed in claim 2, wherein: chuck (25) and bell mouth (27) cooperation setting, the left end of chuck (25) is the toper, and the equal angle in left end of chuck (25) is provided with strip logical groove (251).
4. The integral tensioning device for the arc flat anchor of the steel plate combination beam as claimed in claim 2 or 3, wherein: arc-shaped grooves corresponding to the through holes (9) are formed in the clamping heads (25), and teeth (252) are arranged on the inner walls of the arc-shaped grooves at equal intervals.
5. The integral tensioning device for the arc flat anchor of the steel plate combination beam as claimed in claim 2, wherein: the right side of anchor slab (21) is preceding the back symmetry and is provided with mounting groove (22), and the inside of two mounting grooves (22) all is provided with spring (24), and the right-hand member of two springs (24) all contacts with clamp plate (26).
6. The integral tensioning device for the arc flat anchor of the steel plate combination beam as claimed in claim 1, wherein: the openings of the threading hole (5) and the through hole (9) are provided with arc chamfers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120919371.5U CN214786101U (en) | 2021-04-29 | 2021-04-29 | Integral tensioning device for arc flat anchor of steel plate combination beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120919371.5U CN214786101U (en) | 2021-04-29 | 2021-04-29 | Integral tensioning device for arc flat anchor of steel plate combination beam |
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| Publication Number | Publication Date |
|---|---|
| CN214786101U true CN214786101U (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120919371.5U Expired - Fee Related CN214786101U (en) | 2021-04-29 | 2021-04-29 | Integral tensioning device for arc flat anchor of steel plate combination beam |
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| CN (1) | CN214786101U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117432206A (en) * | 2023-12-20 | 2024-01-23 | 中国矿业大学(北京) | Equal-force tensioning equipment and equal-force tensioning method for multi-harness anchor cable |
-
2021
- 2021-04-29 CN CN202120919371.5U patent/CN214786101U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117432206A (en) * | 2023-12-20 | 2024-01-23 | 中国矿业大学(北京) | Equal-force tensioning equipment and equal-force tensioning method for multi-harness anchor cable |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211119 |