CN111844423A - Tensioning machine with prestress pull rod self-locking mechanism - Google Patents
Tensioning machine with prestress pull rod self-locking mechanism Download PDFInfo
- Publication number
- CN111844423A CN111844423A CN202010718888.8A CN202010718888A CN111844423A CN 111844423 A CN111844423 A CN 111844423A CN 202010718888 A CN202010718888 A CN 202010718888A CN 111844423 A CN111844423 A CN 111844423A
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- China
- Prior art keywords
- plate
- tensioning machine
- fixed
- machine body
- locking mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
Abstract
The utility model provides a tensioning machine that possesses prestressing force pull rod self-locking mechanism, includes the bottom plate and fixes the universal wheel in bottom plate lower surface four corners department, fixed surface has hydraulic rod on the bottom plate, and hydraulic rod's telescopic link top is fixed with the supporting seat, is fixed with the tensioning machine body on the supporting seat, evenly is fixed with a plurality of lugs, and is a plurality of on the tensioning machine body periphery the one end that the tensioning machine body was kept away from to the lug all is fixed with self-locking mechanism, the hydraulic rod left end of tensioning machine body is fixed with the arm-tie, the right side of tensioning machine body sets up the limiting plate, the limiting plate right side is provided with a plurality of reinforcing bars, and is a plurality of the reinforcing bar left end runs through the limiting plate, tensioning machine body and arm-tie and extends to the arm. According to the invention, through sensing the distance and automatically locking within the preset time, accidents caused by manual screwing are avoided, the safety of the device is improved, and meanwhile, the safety of the device is improved.
Description
Technical Field
The invention relates to the field of steel bar testing equipment, in particular to a tensioning machine with a prestress pull rod self-locking mechanism.
Background
The tubular pile reinforcing steel bar generates prestress after being tensioned, and the prestress is kept after the tensioning is finished, so that the requirement of product quality can be met. The act or operation of maintaining the pre-stress is referred to as anchoring. The anchoring method adopted by the existing tubular pile production enterprises is that after the tubular pile is stretched to a set prestress, the nut on the pull rod is screwed to enable the pull rod to be tightly attached to the top plate, so that the stretched steel bar cannot lose the prestress due to rebound and shrinkage.
At present, the nut is locked by manually screwing the nut. This approach is inefficient, labor intensive, and very unsafe. In case the pull rod breaks or loosens in the process of screwing, the pull rod can rebound at a high speed, if fingers are located between the nut and the top plate at the moment, serious industrial accidents can be caused, and therefore the tensioning machine with the prestress pull rod self-locking mechanism is provided to solve the problems.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides the tensioning machine with the prestress pull rod self-locking mechanism, which can avoid accidents caused by manual screwing through sensing distance and automatically locking within preset time, thereby increasing the safety of the device and simultaneously improving the safety of the device.
(II) technical scheme
The invention provides a tensioning machine with a prestress pull rod self-locking mechanism, which comprises a bottom plate and universal wheels fixed at four corners of the lower surface of the bottom plate, wherein a hydraulic push rod is fixed on the upper surface of the bottom plate, a supporting seat is fixed at the top end of a telescopic rod of the hydraulic push rod, a tensioning machine body is fixed on the supporting seat, a plurality of convex blocks are uniformly fixed on the circumferential surface of the tensioning machine body, the self-locking mechanism is fixed at one end, away from the tensioning machine body, of each convex block, a pull plate is fixed at the left end of the hydraulic pull rod of the tensioning machine body, a limiting plate is arranged at the right side of the tensioning machine body, a plurality of steel bars are arranged at the right side of the limiting plate, and the left ends of the plurality of steel bars penetrate through the limiting plate, the tensioning.
Preferably, self-locking mechanism is including fixing the spacing sleeve pipe at the outer periphery of stretch-draw machine body, and spacing sheathed tube internal rotation is connected with a plurality of spacing plectanes that set up side by side, and spacing sleeve pipe left side is provided with the telescopic link, and the right-hand member of telescopic link runs through spacing plectane and extends to in the spacing plectane on rightmost side, the telescopic link other end and arm-tie fixed connection.
Preferably, the telescopic link is kept away from the one end of arm-tie and has been seted up the mounting groove, and the mounting groove internal fixation has step motor, step motor's output shaft fixedly connected with lock plate.
Preferably, the surface of the limiting circular plate is provided with a cross-shaped through groove, and the shape and size of the locking plate are matched with those of the cross-shaped through groove.
Preferably, the outer circumferential surface of the limiting sleeve is provided with a thread groove, and the right end of the limiting sleeve is connected with a threaded pipe cover through threads.
Preferably, an anti-skid rubber pad matched with the inner diameter of the limiting sleeve is fixedly bonded on the inner circumferential surface of the limiting sleeve, and an anti-skid rubber ring is fixedly arranged on the outer circumferential surface of the limiting circular plate.
Preferably, the outer periphery of tensioning machine body is fixed with the location benchmark board, the outer periphery of pulling plate is fixed with infrared distance sensor and timer, infrared distance sensor and location benchmark board are located same level, timer and pulling plate all with step motor and external power source electric connection.
Compared with the prior art, the technical scheme of the invention has the following beneficial technical effects:
1. the tensioning machine body is convenient to move through the bottom plate and the universal wheels, and the height of the tensioning machine body can be adjusted through the hydraulic push rod, so that the tensioning machine body is convenient to butt with a steel bar, and the operation is more convenient;
2. through the setting of self-locking mechanism, avoid hydraulic pressure pull rod fracture, increased the security, through the setting of auto-lock, can improve the precision of test simultaneously.
Drawings
Fig. 1 is a front view of a tensioning machine with a prestressed tension rod self-locking mechanism according to the present invention.
Fig. 2 is a front view of a self-locking mechanism in a tensioning machine with a prestressed tension rod self-locking mechanism provided by the invention.
Fig. 3 is a front cross-sectional view of a self-locking mechanism in a tensioning machine with a prestressed tension rod self-locking mechanism according to the present invention.
Fig. 4 is a side sectional view of a limiting sleeve in a tensioning machine with a prestressed tension rod self-locking mechanism according to the present invention.
Fig. 5 is a schematic perspective view of a locking plate in a tensioning machine with a prestressed tension rod self-locking mechanism according to the present invention.
Reference numerals: 1. reinforcing steel bars; 2. a timer; 3. pulling a plate; 4. a self-locking mechanism; 5. a limiting plate; 6. a stretching machine body; 7. an infrared distance sensor; 8. positioning a reference plate; 9. a hydraulic push rod; 10. a supporting seat; 11. a base plate; 12. a universal wheel; 401. a telescopic rod; 402. a limiting sleeve; 403. a limiting circular plate; 404. a stepping motor; 405. a lock plate; 406. and (4) a threaded pipe cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1 to 5, the tensioning machine with the prestressed tension rod self-locking mechanism provided by the invention comprises a bottom plate 11 and universal wheels 12 fixed at four corners of the lower surface of the bottom plate 11, a hydraulic push rod 9 is fixed on the upper surface of the bottom plate 11, a support seat 10 is fixed at the top end of a telescopic rod of the hydraulic push rod 9, a tensioning machine body 6 is fixed on the support seat 10, a plurality of convex blocks are uniformly fixed on the circumferential surface of the tensioning machine body 6, a self-locking mechanism 4 is fixed at one end of each of the convex blocks far away from the tensioning machine body 6, a tension plate 3 is fixed at the left end of the hydraulic pull rod of the tensioning machine body 6, a limit plate 5 is arranged at the right side of the tensioning machine body 6, a plurality of reinforcing steel bars 1 are arranged at the right side of the limit plate 5, and the left ends of the plurality of reinforcing steel bars 1 penetrate through the.
In an alternative embodiment, the self-locking mechanism 4 includes a limiting sleeve 402 fixed on the outer circumferential surface of the tensioning machine body 6, a plurality of limiting circular plates 403 arranged side by side are rotatably connected in the limiting sleeve 402, a telescopic rod 401 is arranged at the left side of the limiting sleeve 402, the right end of the telescopic rod 401 penetrates through the limiting circular plates 403 and extends into the rightmost limiting circular plate 403, and the other end of the telescopic rod 401 is fixedly connected with the tensioning plate 3.
In an alternative embodiment, an installation groove is formed in one end of the telescopic rod 401 away from the pulling plate 3, a stepping motor 404 is fixed in the installation groove, and a locking plate 405 is fixedly connected to an output shaft of the stepping motor 404.
In an alternative embodiment, a cross-shaped through groove is formed on the surface of the limiting circular plate 403, and the shape and size of the locking plate 405 are matched with those of the cross-shaped through groove.
In an alternative embodiment, the outer circumference of the position-limiting sleeve 402 is formed with a threaded groove, and the right end of the position-limiting sleeve 402 is connected with a threaded cap 406 through a thread.
In an alternative embodiment, an anti-slip rubber pad is adhesively fixed on the inner circumferential surface of the position-limiting sleeve 402 and matches with the inner diameter of the position-limiting sleeve 402, and an anti-slip rubber ring is fixed on the outer circumferential surface of the position-limiting circular plate 403, so that the position-limiting circular plate 403 can keep the rotating angle through the arrangement of the anti-slip rubber pad and the anti-slip rubber ring.
In an optional embodiment, a positioning reference plate 8 is fixed on the outer circumferential surface of the tensioning machine body 6, an infrared distance sensor 7 and a timer 2 are fixed on the outer circumferential surface of the pulling plate 3, the infrared distance sensor 7 and the positioning reference plate 8 are located at the same horizontal height, the timer 2 and the pulling plate 3 are both electrically connected with the stepping motor 404 and an external power supply, and the infrared distance sensor 7 is KTR-GP2D 12.
In the invention, firstly, a reinforcing steel bar 1 is positioned in a muddy soil pier, the reinforcing steel bar 1 is locked through a limiting plate 5, then the device is moved to the left side of the reinforcing steel bar 1 through a bottom plate 11 and a universal wheel 12, a tensioning machine body 6 is lifted through a hydraulic push rod 9 and a supporting seat 10, so that the height of the tensioning machine body 6 is adjusted, the reinforcing steel bar 1 penetrates through the tensioning machine body 6 and a pulling plate 3, then the tensioning machine body 6 works, the reinforcing steel bar 1 is tensioned through the hydraulic pulling rod, simultaneously, a hydraulic pulling rod of the tensioning machine body 6 moves to the left, so that a telescopic rod 401 is driven to move along a limiting sleeve 402, a locking plate 405 penetrates through a cross-shaped through groove on the surface of a limiting circular plate, simultaneously, an infrared distance sensor 7 continuously measures the distance between the infrared distance sensor 7 and a positioning reference plate 8, and when the time for which the infrared distance sensor 7 is kept still exceeds the preset time of a, the locking plate 405 is driven to rotate, so that the limiting circular plate 403 is driven to rotate, the rotating limiting circular plate 403 and other non-rotating limiting circular plates 403 are staggered, the telescopic rod 401 is limited, the self-locking function is achieved, and when the reset needs to be relieved, the stepping motor 404 is reversely rotated by the same angle according to the original rotation angle, so that the locking plate 405 can be moved again, and the limitation is relieved.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. The utility model provides a tensioning machine that possesses prestressing force pull rod self-locking mechanism, includes bottom plate (11) and fixes universal wheel (12) in bottom plate (11) lower surface four corners department, a serial communication port, bottom plate (11) upper surface is fixed with hydraulic rod (9), and the telescopic link top of hydraulic rod (9) is fixed with supporting seat (10), is fixed with tensioning machine body (6) on supporting seat (10), evenly is fixed with a plurality of lugs on tensioning machine body (6) periphery, and is a plurality of the lug is kept away from the one end of tensioning machine body (6) and all is fixed with self-locking mechanism (4), the hydraulic rod left end of tensioning machine body (6) is fixed with arm-tie (3), the right side of tensioning machine body (6) sets up limiting plate (5), limiting plate (5) right side is provided with a plurality of reinforcing bar (1), and is a plurality of reinforcing bar (1) left end runs through limiting plate (5), The tensioning machine body (6) and the pulling plate (3) extend to the left side of the pulling plate (3).
2. The stretching machine with the prestress tension rod self-locking mechanism according to claim 1, wherein the self-locking mechanism (4) comprises a limiting sleeve (402) fixed on the outer circumferential surface of the stretching machine body (6), a plurality of limiting circular plates (403) arranged side by side are rotatably connected in the limiting sleeve (402), a telescopic rod (401) is arranged on the left side of the limiting sleeve (402), the right end of the telescopic rod (401) penetrates through the limiting circular plates (403) and extends into the rightmost limiting circular plate (403), and the other end of the telescopic rod (401) is fixedly connected with the tension plate (3).
3. The tensioning machine with the prestress tension rod self-locking mechanism is characterized in that one end, far away from the tension plate (3), of the telescopic rod (401) is provided with a mounting groove, a stepping motor (404) is fixed in the mounting groove, and an output shaft of the stepping motor (404) is fixedly connected with a locking plate (405).
4. A tensioning machine with a prestressed tension rod self-locking mechanism according to claim 3, characterized in that the surface of the limiting circular plate (403) is provided with a cross-shaped through groove, and the shape and size of the locking plate (405) are matched with the shape and size of the cross-shaped through groove.
5. The tensioning machine with the prestressed tension rod self-locking mechanism according to claim 2, wherein the outer circumferential surface of the limit sleeve (402) is provided with a threaded groove, and the right end of the limit sleeve (402) is connected with a threaded pipe cover (406) through threads.
6. The tensioning machine with the prestressed tension rod self-locking mechanism according to claim 2, wherein the inner circumferential surface of the limiting sleeve (402) is fixedly bonded with an anti-skid rubber pad matched with the inner diameter of the limiting sleeve (402), and the outer circumferential surface of the limiting circular plate (403) is fixedly bonded with an anti-skid rubber ring.
7. The stretching machine with the self-locking mechanism of the prestressed tension rod as claimed in claim 3, wherein a positioning reference plate (8) is fixed on the outer circumferential surface of the stretching machine body (6), an infrared distance sensor (7) and a timer (2) are fixed on the outer circumferential surface of the pulling plate (3), the infrared distance sensor (7) and the positioning reference plate (8) are located at the same horizontal height, and the timer (2) and the pulling plate (3) are both electrically connected with the stepping motor (404) and an external power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010718888.8A CN111844423B (en) | 2020-07-23 | 2020-07-23 | Tensioning machine with prestress pull rod self-locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010718888.8A CN111844423B (en) | 2020-07-23 | 2020-07-23 | Tensioning machine with prestress pull rod self-locking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111844423A true CN111844423A (en) | 2020-10-30 |
| CN111844423B CN111844423B (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010718888.8A Active CN111844423B (en) | 2020-07-23 | 2020-07-23 | Tensioning machine with prestress pull rod self-locking mechanism |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004044228A (en) * | 2002-07-11 | 2004-02-12 | Ishikawajima Harima Heavy Ind Co Ltd | Pre-stress readjusting method and apparatus for pre-stressed concrete |
| CN1702270A (en) * | 2005-06-15 | 2005-11-30 | 尚守平 | Prestressed tensioning device for fiber board |
| CN102101320B (en) * | 2009-12-18 | 2013-04-17 | 北京中铁房山桥梁有限公司 | Device for stretching and fixing pre-stressed steel bar |
| CN205444934U (en) * | 2016-03-31 | 2016-08-10 | 郑州市聚能建筑机械有限公司 | Prestressing force tensioning equipment of steel strand wires |
| CN210361881U (en) * | 2019-07-08 | 2020-04-21 | 广东华岩建材有限公司 | Numerical control tensioning machine for prestressed high-strength concrete pipe pile |
| CN111185871A (en) * | 2020-02-21 | 2020-05-22 | 周军 | Automatic tensioning large nut screwing device of tubular pile die |
-
2020
- 2020-07-23 CN CN202010718888.8A patent/CN111844423B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004044228A (en) * | 2002-07-11 | 2004-02-12 | Ishikawajima Harima Heavy Ind Co Ltd | Pre-stress readjusting method and apparatus for pre-stressed concrete |
| CN1702270A (en) * | 2005-06-15 | 2005-11-30 | 尚守平 | Prestressed tensioning device for fiber board |
| CN102101320B (en) * | 2009-12-18 | 2013-04-17 | 北京中铁房山桥梁有限公司 | Device for stretching and fixing pre-stressed steel bar |
| CN205444934U (en) * | 2016-03-31 | 2016-08-10 | 郑州市聚能建筑机械有限公司 | Prestressing force tensioning equipment of steel strand wires |
| CN210361881U (en) * | 2019-07-08 | 2020-04-21 | 广东华岩建材有限公司 | Numerical control tensioning machine for prestressed high-strength concrete pipe pile |
| CN111185871A (en) * | 2020-02-21 | 2020-05-22 | 周军 | Automatic tensioning large nut screwing device of tubular pile die |
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| Publication number | Publication date |
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| CN111844423B (en) | 2021-11-19 |
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