CN110748090A - Automatic tool anchor clamping piece convenient for accurately measuring internal shrinkage - Google Patents
Automatic tool anchor clamping piece convenient for accurately measuring internal shrinkage Download PDFInfo
- Publication number
- CN110748090A CN110748090A CN201911071265.XA CN201911071265A CN110748090A CN 110748090 A CN110748090 A CN 110748090A CN 201911071265 A CN201911071265 A CN 201911071265A CN 110748090 A CN110748090 A CN 110748090A
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- cone
- tool anchor
- automatic tool
- clamping piece
- measuring
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- 238000005259 measurement Methods 0.000 claims description 11
- 239000000523 sample Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 32
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The embodiment of the invention discloses an automatic tool anchor clamping piece convenient for accurately measuring the internal shrinkage, which comprises: the automatic tool anchor clamping piece is characterized in that the automatic tool anchor clamping piece convenient for accurately measuring the internal shrinkage comprises a measuring head connected with the stop block. Compared with the prior art, the invention has the following beneficial effects: according to the automatic tool anchor clamping piece convenient for accurately measuring the internal shrinkage, the measuring head is added on the stop block on the basis of the prior art, then the displacement sensor is correspondingly arranged on the anchor device to be matched with the measuring head for use, the displacement of the tool anchor clamping piece is measured by the displacement sensor, and compared with a measuring sleeve, the measuring precision is greatly improved.
Description
Technical Field
The invention relates to the technical field of prestressed anchorage devices, in particular to an automatic tool anchor clamping piece capable of conveniently and accurately measuring the internal shrinkage.
Background
The anchorage device is widely applied to project engineering such as highway bridges, railway bridges, urban overpasses, urban light rails, high-rise buildings, hydraulic and hydroelectric dams, ports and wharfs, rock slope protection anchoring, foundation reinforcement, tunnel mine roof anchor tops, prestressed net frames, subways, large buildings and institutions, warehouse workshops, tower buildings, weight lifting, sliding film intermittent propulsion, bridge and tunnel pushing, large containers and ships, sleepers, bridge support replacement, bridge and building reinforcement, steel bar engineering, antimagnetic and anticorrosive engineering, carbon fiber reinforcement, pretensioned beam yard construction, in-vitro prestressed engineering, stay cables, suspension cables and the like.
The existing prestressed anchorage device generally adopts the arrangement of a sleeve for measurement when measuring the displacement distance of an anchor clamping piece of a tool, and then a displacement sensor is arranged to measure the displacement of the sleeve, thereby indirectly measuring the exposed amount of the anchor clamping piece of the tool during tensioning. Because the sleeve and the tool clamping piece are in conical surface contact and are pressed by the spring, a gap and lateral sliding exist, and the data indirectly obtained by measuring the sleeve is not accurate enough.
Disclosure of Invention
The invention aims to overcome the technical defects, provides an automatic tool anchor clamping piece convenient for accurately measuring the internal shrinkage, and solves the technical problems that in the prior art, the measurement mode of obtaining the displacement distance of the tool anchor clamping piece by measuring the exposed amount of the tool anchor clamping piece through a sleeve is not accurate enough and has a large error.
In order to achieve the above technical object, an embodiment of the present invention provides an automatic tool anchor clip for conveniently and accurately measuring an amount of draw-in, the automatic tool anchor clip for conveniently and accurately measuring an amount of draw-in comprising: the automatic tool anchor clamping piece is characterized in that the automatic tool anchor clamping piece convenient for accurately measuring the internal shrinkage comprises a measuring head connected with the stop block.
Compared with the prior art, the invention has the following beneficial effects: according to the automatic tool anchor clamping piece convenient for accurately measuring the internal shrinkage, the measuring head is added on the stop block on the basis of the prior art, then the displacement sensor is correspondingly arranged on the anchor device to be matched with the measuring head for use, the displacement of the tool anchor clamping piece is measured by the displacement sensor, and compared with a measuring sleeve, the measuring precision is greatly improved.
Drawings
FIG. 1 is a schematic structural view of one embodiment of an automated tool anchor clip that facilitates accurate measurement of the amount of retraction provided by the present invention;
FIG. 2 is a cross-sectional view of one embodiment of an automated tool anchor clip of the present invention that facilitates accurate measurement of the amount of retraction;
FIG. 3 is a cross-sectional view of an embodiment of the present invention providing an automated tool anchor clip that facilitates accurate measurement of draw-in.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 3, fig. 1 is a schematic structural view of an embodiment of an automatic tool anchor clip for conveniently and accurately measuring retraction amount according to the present invention; fig. 2 is a cross-sectional view of an embodiment of an automatic tool anchor clip according to the present invention that facilitates accurate measurement of the amount of draw-in, and fig. 3 is a cross-sectional view of an embodiment of an automatic tool anchor clip according to the present invention that facilitates accurate measurement of the amount of draw-in during assembly.
An automated tool anchor clip for facilitating accurate measurement of pull-in comprising: cone 1, dog 2 and gauge head 3. The measuring head 3 is a component which is used for an external displacement sensor to be matched with an automatic tool anchor clamping piece displacement distance which is used for measuring the internal shrinkage amount conveniently and accurately.
In actual use, the automatic tool anchor clamping piece which can accurately measure the retraction amount is arranged on the tool anchor, in particular, the fixing plate 7 on the tool anchor. In order to enable the fixing plate 7 to move the anchor clamps of the automatic tool, which are capable of accurately measuring the amount of retraction, in both the tightening and loosening states, two conical surfaces, i.e., a positive conical surface 111 and a negative conical surface 121, are preferably provided on the vertebral body 1.
Specifically, in the present embodiment, the cone 1 includes a front cone 11 and a rear cone 12. The front cone 11, the rear cone 12 and the stopper 2 are sequentially connected end to end, and in order to ensure the connection strength, an integrally formed connection mode is preferably adopted in the embodiment. The front cone 11 and the rear cone 12 are both in a circular truncated cone shape, and the end with the larger radius of the front cone 11 is connected with the end with the larger radius of the rear cone 12, i.e. the radius of the inner section of the cone formed by the front cone 11 and the rear cone 12 is increased and then decreased along the axial direction of the cone. Preferably, the end of the front cone 11 with the larger radius has the same size as the end of the rear cone 12 with the larger radius, and the front cone 11, the rear cone 12 and the stopper 2 are coaxially arranged, so that the connecting portion of the front cone 11 and the rear cone 12 can be completely attached. The stop 2 is integrally connected to the end of the rear cone 12 having a smaller radius and has a larger radius than the end of the rear cone 12 having a smaller radius. I.e. in the radial direction, the stop 2 extends at an angle to the side of the rear cone 12.
The side surface of the front cone 11 is a forward conical surface 111, the side surface of the rear cone 12 is a backward conical surface 121, the forward conical surface 111 and the backward conical surface 121 face in opposite directions, that is, the forward conical surface 111 faces away from the stopper 2, and the backward conical surface 121 faces toward the stopper 2.
Preferably, in order to better use the automatic tool anchor clamping piece which is convenient for accurately measuring the internal shrinkage, a through hole is formed in the automatic tool anchor clamping piece which is convenient for accurately measuring the internal shrinkage along the axis direction, one end of the through hole is communicated with the front end face of the front cone 11, and the other end of the through hole is communicated with the rear end face of the stop block 2. And a step groove 21 is provided at one end of the through hole communicating with the rear end face of the stopper 2. When the pressure spring 8 is installed and used, the stepped groove 21 is used for connecting and fixing the pressure spring 8. Meanwhile, the inner wall of the through hole in the front cone 11 is provided with the insections 12, so that the friction force between the insections and the steel strand is increased when the steel strand is clamped. The front cone 11 and the rear cone 12 are also provided with deformation grooves along the circumferential direction, and the deformation grooves separate the insections 112. When the steel strand clamping device is installed and used, the front cone 11 and the rear cone 12 are subjected to external force, the extrusion deformation grooves deform, the steel strand is clamped, the insections 112 are in contact with the steel strand, friction force is increased, and the steel strand is prevented from slipping.
Referring to fig. 3, fig. 3 is a sectional view of an embodiment of an anchor clip of an automatic tool for accurately measuring the amount of draw-in according to the present invention. The working condition that the automatic tool anchor clamping piece capable of accurately measuring the retraction amount is arranged on the automatic tool anchor device is shown. The automatic tool anchor device further comprises a top plate 4, a mandril 5, a tool anchor plate 6, a fixing plate 7, a compression spring 8, a spring pressing plate 9, a positioning bolt 10, a displacement sensor 15, a sensor protective cover 16, a sensor protective cover plate 17, a compression bolt 18 and a sensor socket 19.
During assembly, the stop block 2 is abutted to the fixing plate 7, the rear cone 12 penetrates through the through hole in the fixing plate 7, and the reverse conical surface 121 is matched with the through hole in the fixing plate 7 for better assembly effect. The nose cone 11 is inserted into the tapered bore of the tool anchor plate 6 and likewise, for better assembly, the positively tapered surface 111 matches the tapered bore of the tool anchor plate 6. Spring clamp 9 is fastened with tool anchor plate 6 with positioning bolt 10, has placed pressure spring 8 between spring clamp 9 and fixed plate 7, and spring 8 can promote fixed plate 7 and move left, and the through-hole extrusion anti-conical surface 121 of fixed plate 7 for rear cone 12 receives centripetal pressure, presses the deformation groove to realize warping, presss from both sides tight steel strand wires.
The body part of the displacement sensor 15 is connected with the spring pressing plate 9 and is arranged corresponding to the measuring head 3 one by one, and the displacement sensor is used for measuring the displacement of the measuring head 3. The displacement sensor 15 is surrounded by the sensor protection cover 16, the sensor protection cover plate 17 and the spring pressing plate 9 in a matching mode, a safe and stable working environment is provided for the displacement sensor 15, and the displacement sensor 15 can normally and stably work for a long time. The compression bolt 18 fixedly connects the body portion of the displacement sensor 15 with the sensor protective cover 17, further fixing the displacement sensor 15. A sensor socket 19 is also provided on the sensor protection cover 17, which is connected to the displacement sensor 15 by a cable for supplying power to the displacement sensor 15.
In practical use, a person skilled in the art may select a suitable displacement sensor 15 according to actual conditions. The displacement sensor 15 is classified into an ultrasonic distance measuring sensor, a laser distance measuring sensor, an infrared distance measuring sensor, a contact type displacement sensor, and the like. In the present embodiment, a contact type displacement sensor is used, and preferably, a GT2 series sensor by KEYENCE is used.
When the tool anchor plate is installed, the top plate 4 pushes the ejector rod 5 to move rightwards through external force, and the automatic tool anchor clamping piece capable of accurately measuring the internal shrinkage is pulled out of the taper hole of the tool anchor plate 6 to form a tensioning and loosening state. In the actual use process, the external force is generally provided by an internal clamping type jack, the jack is a common device used by those skilled in the art, and the installation method and the use method thereof are well known by those skilled in the art and are not described herein. At this time, the steel strands may be distributed from left to right through the holes in the top plate 4 communicating with the tool anchor plate 6.
Then the fixation of the inner clamping type jack is eliminated, the hold-down spring 8 pushes the automatic tool anchor clamping piece for accurately measuring the inner shrinkage and the fixing plate 7 to move leftwards, and the automatic tool anchor clamping piece for accurately measuring the inner shrinkage stops after entering the taper hole of the tool anchor plate 6. The fixed plate 7 is under the effect of the pressure spring 8, the taper hole is attached to the front taper surface 111 of the front cone 11, meanwhile, clamping force is generated on the side surface of the front cone 11, the front cone 11 deforms to compress the deformation groove, the steel strand is stably clamped to be tensioned, the fixed plate 7 is under the effect of the pressure spring 8, the fixed plate continues to move leftwards, the reverse taper surface 121 continues to be extruded, the rear cone 12 is enabled to be stressed centripetally, the deformation of the pressure deformation groove is achieved, and the steel strand is clamped.
When the steel strand needs to be replaced, the top plate 4 is pushed by the jack to push the mandril 5 and drive the fixing plate 7 to move rightwards, and the spring 8 is compressed to enable the taper hole in the fixing plate 7 to leave the reverse taper surface 121 of the rear cone 12. Meanwhile, the end face of the fixing plate 7 is tightly attached to the stop block 2, the automatic tool anchor clamping piece capable of accurately measuring the internal shrinkage is pulled out of the taper hole of the tool anchor plate 6 under the action of the jack, and the external force on the positive taper surface 111 and the negative taper surface 121 of the tool anchor plate 6 disappears, so that deformation is recovered, the steel strand is loosened, and automatic loosening after tensioning is realized. The steel strand is convenient to withdraw and penetrate again, and the state of being convenient to install is still kept after the steel strand is loosened.
In the process, the displacement of the automatic tool anchor clamping piece which can conveniently and accurately measure the internal shrinkage can be directly obtained through the displacement sensor 15, and data guidance is provided for replacing the steel strand.
The embodiment of the invention has the following beneficial effects: according to the automatic tool anchor clamping piece convenient for accurately measuring the internal shrinkage, the measuring head is added on the stop block on the basis of the prior art, then the displacement sensor is correspondingly arranged on the anchor device to be matched with the measuring head for use, the displacement of the tool anchor clamping piece is measured by the displacement sensor, and compared with a measuring sleeve, the measuring precision is greatly improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a convenient automatic tool anchor clamping piece of accurate measurement volume of contracting in, its include the cone and with the dog that cone one end is connected, the dog extends to along radial direction outside the cone, characterized in that, an automatic tool anchor clamping piece of convenient accurate measurement volume of contracting in include with the gauge head that the dog is connected.
2. The automatic tool anchor clip that facilitates accurate measurement of retraction according to claim 1 wherein said probe is integrally formed with said cone.
3. The automatic tool anchor clip of claim 2, wherein the probe is attached to the side of the stop and extends in a radial direction of the stop.
4. The automatic tool anchor clamping piece convenient for accurately measuring the retraction amount according to claim 3, wherein the end surface of the measuring head far away from the cone and the end surface of the stop block far away from the cone are located on the same plane.
5. The automated tool anchor clip of claim 1, wherein the radius of the cone increases and then decreases in the axial direction.
6. The automatic tool anchor clamping piece convenient for accurately measuring the retraction amount as claimed in claim 5, wherein the cone comprises a front cone and a rear cone, and the front cone, the rear cone and the stop block are integrally connected end to end in sequence.
7. The automated tool anchor clip that facilitates accurate gauging of setback as claimed in claim 6, wherein said nose cone, said rear cone and said stop are coaxially disposed.
8. The automatic tool anchor clamping piece convenient and accurate for measuring the retraction amount as claimed in claim 7, wherein a through hole is formed in the automatic tool anchor clamping piece convenient and accurate for measuring the retraction amount along the axial direction thereof, one end of the through hole is communicated with the front end face of the front cone, and the other end of the through hole is communicated with the rear end face of the stop block.
9. The automatic tool anchor clip for conveniently and accurately measuring the retraction amount as claimed in claim 8, wherein a stepped groove is formed at one end of the through hole communicating with the rear end surface of the stopper.
10. The automatic tool anchor clip for conveniently and accurately measuring the retraction amount as claimed in claim 9, wherein the inner wall of the through hole in the front cone is provided with insections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071265.XA CN110748090A (en) | 2019-11-05 | 2019-11-05 | Automatic tool anchor clamping piece convenient for accurately measuring internal shrinkage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071265.XA CN110748090A (en) | 2019-11-05 | 2019-11-05 | Automatic tool anchor clamping piece convenient for accurately measuring internal shrinkage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110748090A true CN110748090A (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911071265.XA Pending CN110748090A (en) | 2019-11-05 | 2019-11-05 | Automatic tool anchor clamping piece convenient for accurately measuring internal shrinkage |
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| Country | Link |
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| CN (1) | CN110748090A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1151708A (en) * | 1965-09-16 | 1969-05-14 | Losinger Ag | Apparatus for Tensioning and Anchoring Stressing Members Forming Together a Stressing Cable |
| CN202672493U (en) * | 2012-05-15 | 2013-01-16 | 罗城 | Prestress anchor clip |
| CN104047398A (en) * | 2014-05-30 | 2014-09-17 | 柳州泰姆预应力机械有限公司 | Automatic clamping piece of tool anchor |
| CN109060523A (en) * | 2018-06-28 | 2018-12-21 | 四川升拓检测技术股份有限公司 | A kind of steel strand wires intermediate plate multiple spot independent displacement detection device for reverse drawing method |
| CN109811654A (en) * | 2019-01-28 | 2019-05-28 | 杭州海伦铸钢有限公司 | A kind of anchorage that can be self-locking |
| CN110185270A (en) * | 2019-05-15 | 2019-08-30 | 广东盛翔交通工程检测有限公司 | A kind of limit plate reducing prestressing force retraction loss |
| CN211313091U (en) * | 2019-11-05 | 2020-08-21 | 襄阳中铁宏吉工程技术有限公司 | Automatic tool anchor clamping piece convenient for accurately measuring internal shrinkage |
-
2019
- 2019-11-05 CN CN201911071265.XA patent/CN110748090A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1151708A (en) * | 1965-09-16 | 1969-05-14 | Losinger Ag | Apparatus for Tensioning and Anchoring Stressing Members Forming Together a Stressing Cable |
| CN202672493U (en) * | 2012-05-15 | 2013-01-16 | 罗城 | Prestress anchor clip |
| CN104047398A (en) * | 2014-05-30 | 2014-09-17 | 柳州泰姆预应力机械有限公司 | Automatic clamping piece of tool anchor |
| CN109060523A (en) * | 2018-06-28 | 2018-12-21 | 四川升拓检测技术股份有限公司 | A kind of steel strand wires intermediate plate multiple spot independent displacement detection device for reverse drawing method |
| CN109811654A (en) * | 2019-01-28 | 2019-05-28 | 杭州海伦铸钢有限公司 | A kind of anchorage that can be self-locking |
| CN110185270A (en) * | 2019-05-15 | 2019-08-30 | 广东盛翔交通工程检测有限公司 | A kind of limit plate reducing prestressing force retraction loss |
| CN211313091U (en) * | 2019-11-05 | 2020-08-21 | 襄阳中铁宏吉工程技术有限公司 | Automatic tool anchor clamping piece convenient for accurately measuring internal shrinkage |
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Effective date of registration: 20231102 Address after: 412007 Haitian Road, Tianyuan District, Zhuzhou, Hunan Province, No. 18 Applicant after: ZHUZHOU TIMES NEW MATERIAL TECHNOLOGY Co.,Ltd. Address before: 441000 No. 359 Tuanshan Avenue, high tech Zone, Xiangyang City, Hubei Province Applicant before: XIANGYANG CHINA RAILWAY HONGJI ENGINEERING CO.,LTD. |
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