CN203210517U - Tensioning device for prestressed reinforced concrete electric pole with large bending moment and large top diameter - Google Patents
Tensioning device for prestressed reinforced concrete electric pole with large bending moment and large top diameter Download PDFInfo
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- CN203210517U CN203210517U CN 201320142479 CN201320142479U CN203210517U CN 203210517 U CN203210517 U CN 203210517U CN 201320142479 CN201320142479 CN 201320142479 CN 201320142479 U CN201320142479 U CN 201320142479U CN 203210517 U CN203210517 U CN 203210517U
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- electric pole
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Abstract
The utility model discloses a tensioning device for a prestressed reinforced concrete electric pole with a large bending moment and a large top diameter. The tensioning device comprises a hollow steel die with an open end, a steel plate ring, a steel bar anchored on the steel plate ring, a jack, a tensioning nut, a tensioning claw and a supporting rack, wherein a flange plate is arranged at the outer side of an end opening of the hollow steel die. The tensioning device is characterized in that the tensioning claw is connected with a shaft-pulling thread of the jack through a tensioning nut. The tensioning device disclosed by the utility model has the advantages of being safe and reliable as well as convenient to use.
Description
Technical field
The utility model relates to power communication conveying equipment technical field, relates in particular to a kind of tensioning equipment for the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole.
Background technology
Continuous development along with modernized power grid construction and the communication technology, because improving constantly of electric line electric pressure, joint using feeder number increases, and the transmission pressure line directly increases, the annular concrete electric pole of high strength, big moment of flexure, length speciality constantly uses the highest 50m that reached.In order to improve the cracking resistance of the big tip of big moment of flexure footpath reinforced concrete pole, need apply prestressing force to the reinforcing bar of electric pole by the tensioning process technology.But the tensioning equipment of producing the prestressed electric wire pole of common moment of flexure can not satisfy the prestressed requirement of applying of big moment of flexure prestressed electric wire pole at present.Because the huge heaviness of existing stretch-draw tooling device, the form of latch is adopted in the pulling force transmission that produces the jack of drawing tension, and under large-tonnage stretch-draw, latch is subjected to the shearing force bigger than former technology, causes the latch distortion, easily causes security incident.
Therefore, provide a kind of safe and reliable, easy to use, the tensioning equipment that can be used for the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole is the technical problem that those skilled in the art need solution badly.
The utility model content
The purpose of this utility model provides a kind of safe and reliable, and is easy to use, can be used for the tensioning equipment of the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole.
To achieve these goals, the utility model provides a kind of tensioning equipment for the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole, comprise hollow and open-ended and be provided with in the port outside flanged plate punching block, steel plate circle, be anchored at reinforcing bar, jack, tensioning nut, stretch-draw pawl and support on the steel plate circle, state the stretch-draw pawl by the pulling shaft screwed connection of tensioning nut and jack.
Preferably, also comprise fixed disk and the outer arc muscle that is fixed on the steel plate ring outer wall, punching block inside is located at by described steel plate circle and reinforcing bar and the steel plate circle fixedly has the position of outer arc muscle to extend out to outside the punching block, described fixed disk is sheathed on the steel plate ring outer wall, the internal tooth of fixed disk and the interlock of outer arc muscle also are provided be used to the screw rod that withstands the punching block flanged plate on the fixed disk.
Preferably, also comprise the inner arc muscle, described inner arc muscle is fixed on the inwall of steel plate circle and is corresponding with respect to the position of steel plate circle with the outer arc muscle, the stretch-draw pawl collude external tooth and the interlock of inner arc muscle on the pawl.
Preferably, described support is sleeved on the jack, described support middle part is provided with the through hole that the pulling shaft for jack passes through, and the pulling shaft of described jack passes the through hole of support and extend out to the other end of support, and support withstands the flanged plate of punching block by the spike that arranges on the support.
Preferably, the spike that arranges on the described support is dismountable movable supporting feet, and spike is arranged in the spike cover on the support.
Preferably, the quantity of colluding pawl of described inner arc muscle and stretch-draw pawl is identical and be more than four.
Compared with prior art, the tensioning equipment for the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole provided by the utility model is that pulling force transmits part by adopting tensioning nut, has greatly improved the stretching force that can bear, and has the following advantages:
1. stretch-draw in adopting, the external tooth that the stretch-draw pawl colludes pawl is lived the inner arc muscle at steel plate circle internal gearing and is carried out stretch-draw, because the stretch-draw pawl is little apart from the deformed bar arm of force, so the moment of flexure that produces is little, under the large-tonnage stretching force, the steel plate circle is indeformable, and traditional stretching mode, the hook of stretch-draw dish is lived the outer arc muscle and is carried out stretch-draw, the stretch-draw dish tooth pitch prestressing force main reinforcement arm of force is big, the moment of flexure that produces is big, under the large-tonnage stretching force, and the distortion of steel plate circle.In addition, outer stretch-draw is light and handy for interior stretch-draw instrument, is convenient to operation, and safer.
2. adopt tensioning nut to come the pulling shaft of screwed connection stretch-draw pawl and jack, because tensioning nut can bear the large-tonnage stretching force, can effectively transmit tensile force during stretch-draw and do not cause the jack pulling shaft to damage.And traditional stretching mode connects jack pulling shaft and stretch-draw pawl with latch, and latch can not bear the shearing force that produces at the large-tonnage drawing tension in this case.
3. adopt outer fixing, after reaching needed stretch value and force value, stop jack, tighten the screw rod of fixed disk, stretching force is delivered to fixed disk by steel plate circle outer arc muscle, be delivered to screw rod again, be delivered at last on the punching block end flange plate, namely finish whole tension process.
4. what the spike of stretch-draw support adopted is movable spike, only with a support, with regard to the prestressing force large bending moment electrical pole of the multiple bar type of energy stretch-draw specification, and traditional stretching mode, a kind of specification is fixed a stretch-draw support, another kind of specification then must former support be pulled down and is changed another kind of support into, not only support is of a great variety, and waste material accounts for operation field again, and pulls down, load onto time-consumingly, operate very inconvenient.
5. four screw rods of fixed disk can carry out length adjustment, make the control of steel plate circle perpendicularity deviation in GB/T4623-2006 GB scope, are convenient to the assembling construction and guarantee construction quality,, safety more convenient than wedge spacer-type, easy operating.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of a kind of tensioning equipment for the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole that the utility model proposes
The specific embodiment
The purpose of this utility model provides a kind of safe and reliable, and is easy to use, can be used for the tensioning equipment of the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole.
In order to make those skilled in the art understand the technical solution of the utility model better; below in conjunction with accompanying drawing the utility model is described in detail; the description of this part only is exemplary and explanatory, should any restriction not arranged to protection domain of the present utility model.
Please refer to Fig. 1 in one embodiment, a kind of tensioning equipment for the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole provided by the utility model, comprise hollow and open-ended and be provided with the punching block 1 of flanged plate in the port outside, steel plate circle 2, be fixed on the outer arc muscle 3 on steel plate circle 2 outer walls, be anchored at the reinforcing bar 4 on the steel plate circle 2, jack 5, stretch-draw pawl 6, support 7, fixed disk 9 inner arc muscle 10 and tension nut, punching block 1 inside is located at by steel plate circle 2 and reinforcing bar 4 and steel plate circle 2 fixedly has the position of outer arc muscle 3 to extend out to outside the punching block 1, support 7 is sleeved on the jack 5, support 7 middle parts are provided with the through hole that the pulling shaft for jack 5 passes through, the pulling shaft of jack 5 passes the through hole of support 7 and extend out to the other end of support 7, stretch-draw pawl 6 is by the pulling shaft of tensioning nut 11 screwed connections to jack 5, support 7 withstands the flanged plate of punching block 1 by the dismountable spike 8 that arranges on the support 7, fixed disk 9 is sheathed on steel plate circle 2 outer walls, the internal tooth of fixed disk 9 and 3 interlocks of outer arc muscle, also be provided with on the fixed disk 9 be used to the screw rod 12 that withstands punching block 1 flanged plate, inner arc muscle 10 is fixed on the inwall of steel plate circle 2 and is corresponding with respect to the position of steel plate circle 2 with outer arc muscle 3, stretch-draw pawl 6 collude external tooth and 10 interlocks of inner arc muscle on the pawl.
When operation, in the spike cover on the movable supporting feet 8 insertion supports, fixed disk 9 is enclosed within on the steel plate circle 22 four inner arc muscle 10 of 9 four tooth interlocks of fixed disk steel plate circle; Stretch-draw pawl 6 is screwed on the tensioning nut 11 is connected with jack 5 pulling shafts; put in the steel plate circle 2; four claw hooks are lived steel plate circle 2 interior four inner arc muscle 10, start jack 5, and the deformed bar 4 that is anchored at steel plate circle 2 is carried out stretch-draw; behind the stretch value of waiting to reach certain and the certain pressure gauge reading; the screw rod 12 on the fixed disk 9 is tightened in shutdown, voltage stabilizing, and stretching force is delivered on the punching block 1 end flange plate by outer arc muscle 3-fixed disk 9-screw rod 12; start jack 5, be decompressed to zero.Stretch-draw pawl 6 is withdrawed from (rotation stretch-draw pawl 6 breaks off relations) in steel plate circle 2, finish whole tension process.
Need to prove, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise which key element process, method, article or the equipment of a series of key elements not only comprise, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having under the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises key element and also have other identical element.
Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.The above only is preferred embodiment of the present utility model, should be understood that, because the finiteness of literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the prerequisite that does not break away from the utility model principle, can also make some improvement, retouching or variation, also above-mentioned technical characterictic can be made up by rights; These improve retouching, change or combination, or without improving the design of utility model and technical scheme are directly applied to other occasion, all should be considered as protection domain of the present utility model.
Claims (6)
1. one kind is used for the directly tensioning equipment of prestressed reinforced concrete electric pole of the big tip of big moment of flexure, comprise hollow and open-ended and be provided with in the port outside flanged plate punching block, steel plate circle, be anchored at reinforcing bar, jack, tensioning nut, stretch-draw pawl and support on the steel plate circle, it is characterized in that described stretch-draw pawl is by the pulling shaft screwed connection of tensioning nut and jack.
2. the tensioning equipment for the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole according to claim 1, it is characterized in that, also comprise fixed disk and the outer arc muscle that is fixed on the steel plate ring outer wall, punching block inside is located at by described steel plate circle and reinforcing bar and the steel plate circle fixedly has the position of outer arc muscle to extend out to outside the punching block, described fixed disk is sheathed on the steel plate ring outer wall, the internal tooth of fixed disk and the interlock of outer arc muscle also are provided be used to the screw rod that withstands the punching block flanged plate on the fixed disk.
3. the tensioning equipment for the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole according to claim 2, it is characterized in that, also comprise the inner arc muscle, described inner arc muscle is fixed on the inwall of steel plate circle and is corresponding with respect to the position of steel plate circle with the outer arc muscle, the stretch-draw pawl collude external tooth and the interlock of inner arc muscle on the pawl.
4. the tensioning equipment for the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole according to claim 1, it is characterized in that, described support is sleeved on the jack, described support middle part is provided with the through hole that the pulling shaft for jack passes through, the pulling shaft of described jack passes the through hole of support and extend out to the other end of support, and support withstands the flanged plate of punching block by the spike that arranges on the support.
5. the tensioning equipment for the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole according to claim 4 is characterized in that the spike that arranges on the described support is dismountable movable supporting feet, and spike is arranged in the spike cover on the support.
6. the tensioning equipment for the big tip of big moment of flexure footpath prestressed reinforced concrete electric pole according to claim 3 is characterized in that, the quantity of colluding pawl of described inner arc muscle and stretch-draw pawl is identical and be more than four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320142479 CN203210517U (en) | 2013-03-27 | 2013-03-27 | Tensioning device for prestressed reinforced concrete electric pole with large bending moment and large top diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320142479 CN203210517U (en) | 2013-03-27 | 2013-03-27 | Tensioning device for prestressed reinforced concrete electric pole with large bending moment and large top diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203210517U true CN203210517U (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320142479 Expired - Lifetime CN203210517U (en) | 2013-03-27 | 2013-03-27 | Tensioning device for prestressed reinforced concrete electric pole with large bending moment and large top diameter |
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| Country | Link |
|---|---|
| CN (1) | CN203210517U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139456A (en) * | 2014-07-10 | 2014-11-12 | 国家电网公司 | Tension anchoring device of pre-stressed concrete pole |
-
2013
- 2013-03-27 CN CN 201320142479 patent/CN203210517U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139456A (en) * | 2014-07-10 | 2014-11-12 | 国家电网公司 | Tension anchoring device of pre-stressed concrete pole |
| CN104139456B (en) * | 2014-07-10 | 2017-01-04 | 国家电网公司 | A kind of prestressed concrete electric pole stretching and anchoring device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
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| CX01 | Expiry of patent term |