CN105863274B - Automatic locking device special for stretching and stretching of prestressed material - Google Patents
Automatic locking device special for stretching and stretching of prestressed material Download PDFInfo
- Publication number
- CN105863274B CN105863274B CN201610397183.4A CN201610397183A CN105863274B CN 105863274 B CN105863274 B CN 105863274B CN 201610397183 A CN201610397183 A CN 201610397183A CN 105863274 B CN105863274 B CN 105863274B
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- stretching
- supporting shell
- inclined surface
- block
- fixed block
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Wire Processing (AREA)
Abstract
The invention provides an automatic locking device special for stretching and stretching of a prestressed material, which comprises a supporting shell, wherein one side of the inside of the supporting shell is provided with a fixed block, one side of the fixed block is fixedly connected with the supporting shell, the other side of the fixed block is provided with at least one inclined surface A which inclines downwards, each inclined surface A is provided with a movable block, the surface of the movable block, which is contacted with the fixed block, is an inclined surface B, and the inclined surface B is parallel to the inclined surface A; the number of the connecting pull rods is the same as that of the inclined planes A, and the connecting pull rods are provided with stop blocks. The special automatic locking device for stretching and elongating the prestressed material has novel structure and reasonable design, can be used for locking the stress applied to single or multiple prestressed materials respectively or simultaneously, locks the applied stress at any time by utilizing the automatic sliding of the moving block along the tangential plane of the fixed block, prevents the stress from rebounding, and ensures the accuracy and stability of the stretching force value.
Description
Technical Field
The invention belongs to the technical field of stretching of prestressed materials, and particularly relates to an automatic locking device special for stretching and elongating of a prestressed material.
Background
The prestress tensioning is to add tension in advance in a component, so that the prestressed tensioning component bears tensile stress and further generates certain deformation to cope with loads born by the structure, the traditional prestress tensioning device mostly adopts mechanical or electric or even manual to lock the tensioning force of a prestress material, the process is complicated, and the accuracy and stability of the tensioning force value cannot be guaranteed.
Disclosure of Invention
Therefore, the invention aims to provide an automatic locking device special for stretching and elongating of a prestressed material, so as to solve the problems that the locking process of the traditional prestressed stretching device is complicated and the accuracy and stability of the stretching force value cannot be ensured.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the automatic locking device special for stretching and stretching of the prestressed material comprises a supporting shell, wherein one side of the inside of the supporting shell is provided with a fixed block, one side of the fixed block is fixedly connected with the supporting shell, at least one inclined surface A which is inclined downwards is distributed on the other side of the fixed block from top to bottom in a step-like manner, each inclined surface A is provided with a movable block, the surface, which is contacted with the fixed block, of the movable block is an inclined surface B, and the inclined surfaces B are parallel to the inclined surfaces A; the side surface of the moving block opposite to the inclined surface B is provided with a strip-shaped hole penetrating through the moving block, the fixed block is provided with a through hole corresponding to the strip-shaped hole, and the front side surface and the rear side surface of the supporting shell are respectively provided with mounting holes corresponding to the strip-shaped hole and the through hole; the number of the connecting pull rods is the same as that of the inclined planes A, one ends of the connecting pull rods sequentially penetrate through the mounting holes on one side of the supporting shell, the strip-shaped holes, the through holes and the mounting holes on the other side of the supporting shell and then extend out of the supporting shell, and the connecting pull rods are provided with stop blocks.
Further, the included angle between the inclined plane A of the fixed block and the horizontal plane is 50-80 degrees, and the included angle between the inclined plane B of the movable block and the horizontal plane is 50-80 degrees.
Further, the inclined surface A and the inclined surface B are both rough surfaces formed by embossing or scoring processes.
Further, the size of the stop block is smaller than the size of the mounting hole and larger than the size of the strip-shaped hole.
Further, a groove communicated with the strip-shaped hole is formed in the side face, opposite to the inclined face B, of the moving block, and the size of the groove is matched with that of the stop block.
Further, the fixing block is fixed inside the supporting shell in a bolting or welding mode.
Further, the two side surfaces of the moving block are provided with bar-shaped grooves parallel to the inclined surface B, and the supporting shell is provided with fixing pins corresponding to the bar-shaped grooves.
Further, a pull rod is arranged at the upper end of the moving block.
Compared with the prior art, the automatic locking device special for stretching and stretching of the prestressed material has the following advantages: novel structure, reasonable in design can be used to single or many prestressing force materials respectively or the locking of exerting stress simultaneously, utilizes the automation of movable block to slide downwards along the tangent plane with the fixed block, locks at any time and exerts stress, prevents that the stress from kick-backing, and has guaranteed the accuracy and the stability of tensile force value.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute an undue limitation on the invention. In the drawings:
FIG. 1 is a schematic view of a first embodiment of the present invention;
FIG. 2 is a front view of a fixed block according to a first embodiment of the present invention;
FIG. 3 is a side view of a mounting block according to a first embodiment of the present invention;
FIG. 4 is a schematic diagram of a second embodiment of the present invention;
FIG. 5 is a front view of a fixed block according to a second embodiment of the present invention;
FIG. 6 is a side view of a mounting block according to a second embodiment of the present invention;
FIG. 7 is a front view of a motion block according to the present invention;
fig. 8 is a side view of the inventive traveling block.
Reference numerals illustrate:
1-a support shell; 2-a fixed block; 201-a through hole; 202-inclined plane a; 3-moving blocks; 301-bar-shaped holes; 302-grooves; 303 grooves; 304-inclined plane B; 4-connecting a pull rod; 5-a stop block; 6-template; 7-pre-stressing material.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the invention, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
As shown in fig. 1-3 and fig. 7-8, an automatic locking device special for stretching and stretching of a prestressed material comprises a supporting shell 1, wherein the supporting shell 1 is fixed on a formwork 6 of a concrete product, a fixed block 2 is arranged on one side, close to the formwork 6, inside the supporting shell 1, of the supporting shell 1, one side of the fixed block 2 is fixed inside the supporting shell 1 in a bolting or welding mode, a downward inclined surface A202 is arranged on the other side of the fixed block 2, a moving block 3 is arranged on the inclined surface A202, the surface, which is in contact with the fixed block 2, of the moving block 3 is an inclined surface B304, the inclined surface B304 is parallel to the inclined surface A202, further, the inclined surface A202 of the fixed block 2 forms an included angle of 50-80 degrees with the horizontal plane, the inclined surface B304 of the moving block 3 forms a rough surface by adopting an embossing or scoring process, and after stress is prevented;
a strip-shaped hole 301 penetrating through the moving block 3 is formed in the side surface, opposite to the inclined surface B304, of the moving block 3, a groove communicated with the strip-shaped hole 301 is formed in the side surface, opposite to the inclined surface B304, of the moving block 3, a through hole 201 corresponding to the strip-shaped hole 301 is formed in the fixed block 2, and mounting holes corresponding to the strip-shaped hole 301 and the through hole 201 are formed in the front side surface and the rear side surface of the supporting shell 1;
one end of the connecting pull rod 4 sequentially passes through the mounting hole on one side of the supporting shell 1, the strip-shaped hole 301, the through hole 201 and the mounting hole on the other side of the supporting shell 1 and then extends out of the supporting shell 1, a stop block 5 is arranged on the connecting pull rod 4, the size of the stop block 5 is smaller than that of the mounting hole and larger than that of the strip-shaped hole 301, the size of the groove 302 is matched with that of the stop block 5, and the stop block 5 can pass through the mounting hole on one side of the supporting shell 1 and is clamped in the groove 302;
further, two side surfaces of the moving block 3 are provided with bar-shaped grooves 303 parallel to the inclined surface B304, and the supporting shell 1 is provided with fixing pins corresponding to the bar-shaped grooves 303, so as to ensure that the moving block 3 slides in parallel along the inclined surface;
further, a pull rod is arranged at the upper end of the moving block 3, so that the moving block can be conveniently taken out;
example two
As shown in fig. 4-8, an automatic locking device special for stretching and stretching of a prestressed material comprises a supporting shell 1, wherein one side of the inside of the supporting shell 1 is provided with a fixed block 2, the supporting shell 1 is fixed on a formwork 6 of a concrete product, one side of the fixed block 2, which is close to the formwork 6, is fixed inside the supporting shell 1 in a bolting or welding mode, two inclined planes A202 which incline downwards are distributed from top to bottom in a stepped mode on the other side of the fixed block 2, each inclined plane A202 is provided with a moving block 3, the surface of the moving block 3, which is contacted with the fixed block 2, is an inclined plane B304, the inclined plane B304 is parallel to the inclined plane A202, further, the inclined plane A202 of the fixed block 2 forms an included angle of 50-80 degrees with the horizontal plane, the inclined plane B304 of the moving block 3 forms a rough surface by embossing or scoring process, and the inclined planes A202 and B304 are prevented from slipping after being stressed;
a strip-shaped hole 301 penetrating through the moving block 3 is formed in the side face, opposite to the inclined face B304, of the moving block 3, a groove communicated with the strip-shaped hole 301 is formed in the side face, opposite to the inclined face B304, of the moving block 3, a through hole 201 corresponding to the strip-shaped hole 301 is formed in the fixed block 2, and mounting holes corresponding to the strip-shaped hole 301 and the through hole 201 are formed in the front side face and the rear side face of the supporting shell 1;
the number of the connecting pull rods is two, one end of each connecting pull rod 4 sequentially passes through one side of the supporting shell 1 and the mounting hole, the strip-shaped hole 301, the through hole 201 and the mounting hole on the other side of the supporting shell 1 and then extends out of the supporting shell 1, the connecting pull rods 4 are provided with the stop blocks 5, the size of each stop block 5 is smaller than that of the mounting hole and larger than that of the strip-shaped hole 301, the size of each groove 302 is matched with that of each stop block 5, and each stop block 5 can pass through one side of the mounting hole on the supporting shell 1 and is clamped in each groove 302;
further, two side surfaces of the moving block 3 are provided with bar-shaped grooves 303 parallel to the inclined surface B304, and the supporting shell 1 is provided with fixing pins corresponding to the bar-shaped grooves 303, so as to ensure that the moving block 3 slides in parallel along the inclined surface;
the working process of the invention comprises the following steps: when the prestress tensioning device is used, firstly, the connecting pull rod 4 sequentially passes through the mounting hole on one side of the supporting shell 1, the strip-shaped hole 301 of the moving block 3, the through hole 201 of the fixed block 2, the mounting hole on the other side of the supporting shell 1 and the template 6 and then is connected with the prestress material 7, the pull rod on the moving block 3 is lifted to enable the stop block 5 on the connecting pull rod 4 to extend into the groove 302 of the moving block 3, the connection and the rotation of the connecting pull rod 4 and the prestress material 7 are ensured to be concentric and accurate, when the connecting pull rod 4 is used for applying stress and stretching to the prestress material 7, the stop block 5 on the connecting pull rod 4 gradually extends out of the groove 302 of the moving block 3, the prestress material 7 continues to stretch, the moving block 3 starts to slide downwards, and the stop block 3 always keeps close to the stop block 5 and the tangent plane of the fixed block 2 under the control of the strip-shaped groove 303 on the supporting shell 1, and the tension stress on the connecting pull rod 4 can be stopped and released after the tension is controlled to be tensioned to a control value, and the tension stress on the connecting pull rod 4 is locked on the supporting shell 1 through the stop 5 and the moving block 3 and the fixed block 2.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An automatic locking device special for stretching and stretching of a prestressed material is characterized in that: the device comprises a supporting shell (1), wherein one side of the inside of the supporting shell (1) is provided with a fixed block (2), one side of the fixed block (2) is fixedly connected with the supporting shell (1), at least one inclined surface A (202) inclining downwards is distributed on the other side of the fixed block (2) from top to bottom in a stepwise manner, each inclined surface A (202) is provided with a moving block (3), the surface of the moving block (3) contacted with the fixed block (2) is an inclined surface B (304), and the inclined surfaces B (304) are parallel to the inclined surfaces A (202);
a strip-shaped hole (301) penetrating through the moving block (3) is formed in the side surface, opposite to the inclined surface B (304), of the moving block (3), a through hole (201) corresponding to the strip-shaped hole (301) is formed in the fixed block (2), and mounting holes corresponding to the strip-shaped hole (301) and the through hole (201) are formed in the front side surface and the rear side surface of the supporting shell (1);
the number of the connecting pull rods (4) is the same as that of the inclined planes A (202), one end of each connecting pull rod (4) sequentially penetrates through the mounting hole on one side of the supporting shell (1), the strip-shaped hole (301), the through hole (201) and the mounting hole on the other side of the supporting shell (1) and then extends out of the supporting shell (1), and a stop block (5) is arranged on each connecting pull rod (4);
the size of the stop block (5) is smaller than the size of the mounting hole and larger than the size of the strip-shaped hole (301); a groove communicated with the strip-shaped hole (301) is formed in the side face, opposite to the inclined face B (304), of the moving block (3), and the size of the groove (302) is matched with that of the stop block (5); the upper end of the moving block (3) is provided with a pull rod.
2. An automatic locking device dedicated to stretching and elongating of prestressed material according to claim 1, characterized in that: the included angle between the inclined surface A (202) of the fixed block (2) and the horizontal plane is 50-80 degrees, and the included angle between the inclined surface B (304) of the movable block (3) and the horizontal plane is 50-80 degrees.
3. An automatic locking device dedicated to stretching and elongating of prestressed material according to claim 1, characterized in that: the inclined surface A (202) and the inclined surface B (304) are rough surfaces formed by embossing or scoring processes.
4. An automatic locking device dedicated to stretching and elongating of prestressed material according to claim 1, characterized in that: the fixing block (2) is fixed inside the supporting shell (1) in a bolting or welding mode.
5. An automatic locking device dedicated to stretching and elongating of prestressed material according to claim 1, characterized in that: the two side surfaces of the moving block (3) are provided with bar-shaped grooves (303) parallel to the inclined surface B (304), and the supporting shell (1) is provided with fixing pins corresponding to the bar-shaped grooves (303).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610397183.4A CN105863274B (en) | 2016-06-03 | 2016-06-03 | Automatic locking device special for stretching and stretching of prestressed material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610397183.4A CN105863274B (en) | 2016-06-03 | 2016-06-03 | Automatic locking device special for stretching and stretching of prestressed material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105863274A CN105863274A (en) | 2016-08-17 |
| CN105863274B true CN105863274B (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610397183.4A Active CN105863274B (en) | 2016-06-03 | 2016-06-03 | Automatic locking device special for stretching and stretching of prestressed material |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476124B (en) * | 2016-10-11 | 2019-01-25 | 山东高速轨道设备材料有限公司 | A kind of dual-direction pre-tensioning system prestressed concrete track slab mold |
| CN113084998A (en) * | 2021-04-12 | 2021-07-09 | 中建三局集团有限公司 | Pre-tensioning method prestressed reinforcement tension-reducing member |
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| CN105863274A (en) | 2016-08-17 |
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