CN208023421U - A kind of tensioning equipment accurately controlling prestress value - Google Patents
A kind of tensioning equipment accurately controlling prestress value Download PDFInfo
- Publication number
- CN208023421U CN208023421U CN201820250768.8U CN201820250768U CN208023421U CN 208023421 U CN208023421 U CN 208023421U CN 201820250768 U CN201820250768 U CN 201820250768U CN 208023421 U CN208023421 U CN 208023421U
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Abstract
The utility model discloses a kind of tensioning equipments accurately controlling prestress value, it includes steel strand wires connections storehouse, tension rod and anchoring base, steel strand wires connections storehouse includes the interior storehouse being connected and reinforcement sleeve, interior storehouse includes the closing in section being connected and open section with reinforcement sleeve, one end of tension rod is located in the open section in interior storehouse, the other end of tension rod passes through the closing in section for reinforcing sleeve, and it is connected with anchoring base by tightening nut, there are radial clearances between the other end of tension rod and the closing in section for reinforcing sleeve, it is provided with steel strand wires in the open section in interior storehouse, there are radial clearances between steel strand wires and the closing in section in interior storehouse.Having between steel strand wires and the closing in section and open section in interior storehouse in the utility model between gap and tension rod and the closing in section and open section of reinforcing sleeve has gap, realize the technical purpose that torque is fully converted into axle power, be not in the loss of torque and axle power, prestressed stretch-draw is accurately controlled to realize.
Description
Technical field
The utility model is related to technical field of civil engineering, are filled more particularly to a kind of tensioning accurately controlling prestress value
It sets.
Background technology
To meet requirement for bearing capacity or improving structure military service performance, large-span steel-reinforced concrete structure construction generally can all be adopted
With prestressing force scheme.And the structure for being on active service, when needing reinforcement there are Lack of support, external prestressing strengthening skill
Art is also one of most effective means of structural strengthening, is widely used in old bridge reinforcement.To sum up, prestressing force is in modern project knot
It has been widely used, or even can not avoid in structure.
But due to tensioning equipment and anchorage etc., that in tensioning, there is prestress values always is less than normal or super for steel strand wires etc.
The case where tensioning, after tensioning as various losss of prestress and cause prestress value gradually less than normal, cause design value with
There are relatively large deviations for actual conditions, and especially during engineering structure normal use, conference is crossed in loss of prestress leads to pre- answer
Power effect has not just existed.Therefore, it is possible to accurately control prestressing force pull-up values, and tension operation is convenient to prestress engineering
Using important in inhibiting.
Utility model content
Technical problem to be solved in the utility model is present situation in view of the above technology, provides one kind and accurately controlling prestressing force
The tensioning equipment of value so that building structure can compensate prestress loss value in time during service.
To achieve the above object, the utility model provides following scheme：The utility model provide one kind accurately control it is pre-
The tensioning equipment of stress value, including steel strand wires connections storehouse, tension rod and anchoring base, the steel strand wires connections storehouse include being connected
Interior storehouse and reinforce sleeve, the interior storehouse and the reinforcements sleeve be hollow structure, the interior storehouse and the reinforcement sleeve
Hollow structure includes the closing in section being connected and open section, and the internal diameter of the closing in section is less than the internal diameter of the open section, institute
It states the open section for reinforcing sleeve and the open section in the interior storehouse is positioned opposite, one end of the tension rod is enlarged-diameter end, institute
It states enlarged-diameter end to be located in the open section for reinforcing sleeve, the diameter at the enlarged-diameter end is more than the reinforcement sleeve
Closing in section internal diameter, the diameter at the enlarged-diameter end are less than the open section internal diameter for reinforcing sleeve, the tension rod it is another
Hold across the closing in section for reinforcing sleeve, and be connected with the anchoring base by tightening nut, the tension rod it is another
There are radial clearance between one end and the closing in section for reinforcing sleeve, the upsetting of steel strand wires is provided in the open section in the interior storehouse
Butt end, the diameter of the upset end of the steel strand wires are more than the closing in section diameter in the interior storehouse, the upset end of the steel strand wires it is straight
Diameter is less than the open section diameter in the interior storehouse, and the non-upset end of the steel strand wires passes through the closing in section in the interior storehouse, the steel to twist
There are radial clearances between the non-upset end of line and the closing in section in the interior storehouse.
Preferably, the interior storehouse is external screw thread steel pipe, and the reinforcement sleeve is inner thread steel pipe, the open section in the interior storehouse
Connection type between the open section for reinforcing sleeve is to be threadedly coupled.
Preferably, the closing in section for reinforcing sleeve is stepped hole, is connected for rounding off between the stepped hole, described
The closing in section in interior storehouse is that rounding off connects with the junction of open section.
Preferably, it is provided with a longitudinal opening on the side wall of the open section in the interior storehouse.
Preferably, the anchoring base is equipped with the through hole to match with the other end diameter of the tension rod, described
The other end of tension rod passes through the through hole, and is connected with the anchoring base by tightening nut.
The utility model also provides a kind of method for stretching accurately controlling prestress value, includes the following steps：
By the tensioning end jumping-up of steel strand wires, the spherical upset end that diameter is more than steel strand wires diameter is formed；
The upset end of steel strand wires is placed in the inside in interior storehouse by the longitudinal opening of interior storehouse side wall；
The non-diameter bellend of tension rod is entered from the open section for reinforcing sleeve, and is worn from the closing in section for reinforcing sleeve
Go out, the enlarged-diameter end of the tension rod is placed in the inside for reinforcing sleeve, and the reinforcement sleeve and the interior storehouse are tightened company
It connects；
After the non-diameter bellend of the tension rod to be passed through to the through hole on anchoring base, it is fixed on by tightening nut
On the anchoring base, and the anchoring base is fixed with main structure body；The tension rod is tightened by torque wrench, to
Tensioning is carried out to steel strand wires.
The utility model achieves following advantageous effect compared with the existing technology：
1, in the tensioning equipment provided by the utility model for accurately controlling prestress value the closing in section in steel strand wires and interior storehouse and
Have gap between open section so that steel strand wires can be freely rotated during tension, avoid steel strand wires bear compared with
The problem of big torsion, meanwhile, tension rod and reinforce sleeve closing in section and open section between have gap so that steel strand wires by
Draw during generate torsion when, interior storehouse with reinforce sleeve can relatively tension rod rotate, further avoid steel strand wires and bear
The problem of larger torsion is not in the damage of torque and axle power to realize the technical purpose that torque is fully converted into axle power
It loses；Meanwhile by the correspondence between torque and pretightning force, carrying out accurate tension steel strand.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without having to pay creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the overall structure diagram for the tensioning equipment that the utility model accurately controls prestress value；
Fig. 2 is the structural schematic diagram of steel strand wires connections storehouse；
Fig. 3 is the structural schematic diagram of tension rod；
Fig. 4 is the structural schematic diagram of anchoring base；
Wherein, 1 reinforces sleeve, storehouse, 3 tension rods, 4 anchoring bases, 5 closing in sections, 6 open sections, 7 enlarged-diameter ends, 8 in 2
Upset end, 9 through holes, 10 tightening nuts, 11 steel strand wires, 12 longitudinal openings.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Technical problem to be solved in the utility model is present situation in view of the above technology, provides one kind and accurately controlling prestressing force
The tensioning equipment of value so that building structure can compensate prestress loss value in time during service.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, below in conjunction with the accompanying drawings and have
Body embodiment is described in further detail the utility model.
As shown in Figs 1-4, the utility model provides a kind of tensioning equipment accurately controlling prestress value, including steel strand wires connect
Storehouse, tension rod 3 and anchoring base 4 are connect, steel strand wires connections storehouse includes the interior storehouse 2 being connected and reinforcement sleeve 1, interior storehouse 2 and reinforcement
Sleeve 1 is hollow structure, and interior storehouse 2 includes the closing in section 5 being connected and open section 6 with the hollow structure for reinforcing sleeve 1, is received
The internal diameter of mouth section 5 is less than the internal diameter of open section 6, and open section 6 and the open section 6 in interior storehouse 2 for reinforcing sleeve 1 are positioned opposite, tensioning
One end of bar 3 is enlarged-diameter end 7, and enlarged-diameter end 7 is located in the open section 6 for reinforcing sleeve 1, the diameter at enlarged-diameter end 7
More than 5 internal diameter of closing in section for reinforcing sleeve 1, the diameter at enlarged-diameter end 7 is less than 6 internal diameter of open section for reinforcing sleeve 1, tension rod
3 other end passes through the closing in section 5 for reinforcing sleeve 1, and is connected with anchoring base 4 by tightening nut 10, tension rod 3 it is another
There are radial clearance between one end and the closing in section 5 for reinforcing sleeve 1, the jumping-up of steel strand wires 11 is provided in the open section 6 in interior storehouse 2
End 8, the diameter of the upset end 8 of steel strand wires 11 are more than 5 diameter of closing in section in interior storehouse 2, and the diameter of the upset end 8 of steel strand wires 11 is less than
6 diameter of open section in interior storehouse 2, the non-upset end 8 of steel strand wires 11 pass through the closing in section 5 in interior storehouse 2, the non-upset end 8 of steel strand wires 11
There are radial clearances between the closing in section 5 in interior storehouse 2.
Wherein, at work, the upset end 8 of steel strand wires 11 is placed on the open section 6 in interior storehouse 2 to tensioning equipment by operating personnel
It is interior, the open section 6 in interior storehouse 2 is connected with the open section 6 for reinforcing sleeve 1, degree is screwed by adjusting tightening nut 10, is made
Obtaining tension rod 3 is supplied to 11 stretching force of steel strand wires to be accurately controlled, due to the closing in section 5 and opening of steel strand wires 11 and interior storehouse 2
Section 6 between have gap so that steel strand wires 11 can be freely rotated during tension, avoid steel strand wires 11 bear compared with
The problem of big torsion, meanwhile, there is gap between tension rod 3 and the closing in section 5 and open section 6 of reinforcing sleeve 1 so that steel strand wires
11 during tension when generating torsion, and reinforcing sleeve 1 and interior storehouse 2 can rotate with respect to tension rod 3, further avoid steel
The problem of twisted wire 11 bears larger torsion is not in torque to realize the technical purpose that torque is fully converted into axle power
With the loss of axle power；Wherein, be precisely controlled is twisted to steel by torque value in Digital Electronic Torque Wrench and the correspondence of pretightning force
Line 11 is precisely loaded.It should be noted that：It is in the prior art to pull adjustment torque value with pretightning force by Digital-display torque
The codes and standards of acquiescence.
It is external screw thread steel pipe to reinforce sleeve 1 in the utility model, and interior storehouse 2 is inner thread steel pipe, reinforces the open section of sleeve 1
Connection type between 6 and the open section 6 in interior storehouse 2 is to be threadedly coupled.
The enlarged-diameter end 7 of tension rod 3 and the upset end 8 of steel strand wires 11 are spherical in the present invention；I.e. tension rod 3 is straight
The upset end 8 of diameter bellend 7 and steel strand wires 11 forms flexural pivot form component with reinforcement sleeve 1 and interior storehouse 2 respectively, avoids stress collection
In, it is convenient for 3 adjustment direction of steel strand wires 11 and tension rod, further realizes and be precisely controlled.
The closing in section 5 for reinforcing sleeve 1 in the utility model is stepped hole, is connected for rounding off between stepped hole, interior storehouse 2
Closing in section 5 and the junction of open section 6 be that rounding off connects.
It is put into inside interior storehouse 2 for the ease of steel strand wires 11, is arranged on the side wall of the open section 6 in interior storehouse 2 in the utility model
There is a longitudinal opening 12.
Anchoring base 4 is equipped with the through hole 9 to match with the other end diameter of tension rod 3, tensioning in the utility model
The other end of bar 3 passes through through hole 9, and is connected with anchoring base 4 by tightening nut 10.
A kind of method for stretching accurately controlling prestress value is also provided in the utility model, is included the following steps：
By the tensioning end jumping-up of steel strand wires 11, the spherical upset end 8 that diameter is more than 11 diameter of steel strand wires is formed；
The upset end 8 of steel strand wires 11 is placed in the inside in interior storehouse 2 by the longitudinal opening 12 of 2 side wall of interior storehouse；
By the non-diameter bellend 7 of tension rod 3 from reinforce sleeve 1 open section 6 enter, and from reinforce sleeve 1 closing in
Section 5 is pierced by, and the enlarged-diameter end 7 of tension rod 3 is placed in the inside for reinforcing sleeve 1, and reinforcement sleeve 1 is tightened with interior storehouse 2 and is connect；
After the non-diameter bellend 7 of tension rod 3 to be passed through to the through hole 9 on anchoring base 4, fixed by tightening nut 10
It is fixed with main structure body on anchoring base 4, and by anchoring base 4；Tension rod 3 is tightened by torque wrench, to be twisted to steel
Line 11 carries out tensioning.
Specific case is applied in the utility model to be expounded the principles of the present invention and embodiment, it is above
The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field
As technical staff, according to the utility model thought, there will be changes in the specific implementation manner and application range.To sum up
Described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. a kind of tensioning equipment accurately controlling prestress value, which is characterized in that including steel strand wires connections storehouse, tension rod and anchoring
Pedestal, the steel strand wires connections storehouse includes the interior storehouse being connected and reinforces sleeve, during the interior storehouse and the reinforcement sleeve are
Hollow structure, the interior storehouse and the hollow structure for reinforcing sleeve include the closing in section being connected and open section, the closing in
The internal diameter of section is less than the internal diameter of the open section, and the open section for reinforcing sleeve and the open section in the interior storehouse are positioned opposite,
One end of the tension rod is enlarged-diameter end, and the enlarged-diameter end is located in the open section for reinforcing sleeve, described straight
The diameter of diameter bellend is more than the closing in section internal diameter for reinforcing sleeve, and the diameter at the enlarged-diameter end is less than the reinforcing sleeve
The other end of the open section internal diameter of cylinder, the tension rod passes through the closing in section of the reinforcement sleeve, and passes through tightening nut and institute
It states anchoring base to be connected, there are radial clearance, institutes between the other end of the tension rod and the closing in section for reinforcing sleeve
The upset end that steel strand wires are provided in the open section in interior storehouse is stated, the diameter of the upset end of the steel strand wires is more than the receipts in the interior storehouse
Mouth section diameter, the diameter of the upset end of the steel strand wires are less than the open section diameter in the interior storehouse, the non-jumping-up of the steel strand wires
The closing in section across the interior storehouse is held, there are between radial direction between the non-upset end of the steel strand wires and the closing in section in the interior storehouse
Gap.
2. the tensioning equipment according to claim 1 for accurately controlling prestress value, which is characterized in that the interior storehouse is outer spiral shell
Line steel pipe, the reinforcement sleeve is inner thread steel pipe, between the open section in the interior storehouse and the open section for reinforcing sleeve
Connection type is to be threadedly coupled.
3. the tensioning equipment according to claim 1 for accurately controlling prestress value, which is characterized in that the tension rod it is straight
The upset end of diameter bellend and the steel strand wires is spherical.
4. the tensioning equipment according to claim 1 for accurately controlling prestress value, which is characterized in that the reinforcement sleeve
Closing in section is stepped hole, is connected for rounding off between the stepped hole, the junction of the closing in section and open section in the interior storehouse
It is connected for rounding off.
5. the tensioning equipment according to claim 1 for accurately controlling prestress value, which is characterized in that the opening in the interior storehouse
It is provided with a longitudinal opening on the side wall of section.
6. the tensioning equipment according to claim 1 for accurately controlling prestress value, which is characterized in that on the anchoring base
Equipped with the through hole that the other end diameter with the tension rod matches, the other end of the tension rod passes through the through hole,
And it is connected with the anchoring base by tightening nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820250768.8U CN208023421U (en) | 2018-02-10 | 2018-02-10 | A kind of tensioning equipment accurately controlling prestress value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820250768.8U CN208023421U (en) | 2018-02-10 | 2018-02-10 | A kind of tensioning equipment accurately controlling prestress value |
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| Publication Number | Publication Date |
|---|---|
| CN208023421U true CN208023421U (en) | 2018-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820250768.8U Active CN208023421U (en) | 2018-02-10 | 2018-02-10 | A kind of tensioning equipment accurately controlling prestress value |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108221716A (en) * | 2018-02-10 | 2018-06-29 | 深圳市市政设计研究院有限公司 | A kind of tensioning equipment and its method for stretching of accurate control prestress value |
-
2018
- 2018-02-10 CN CN201820250768.8U patent/CN208023421U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108221716A (en) * | 2018-02-10 | 2018-06-29 | 深圳市市政设计研究院有限公司 | A kind of tensioning equipment and its method for stretching of accurate control prestress value |
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