CN220395200U - Concrete mold external drawknot piece capable of fastening at single side - Google Patents
Concrete mold external drawknot piece capable of fastening at single side Download PDFInfo
- Publication number
- CN220395200U CN220395200U CN202321795511.8U CN202321795511U CN220395200U CN 220395200 U CN220395200 U CN 220395200U CN 202321795511 U CN202321795511 U CN 202321795511U CN 220395200 U CN220395200 U CN 220395200U
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- screw
- fastening
- claw
- screw rod
- rotation stopping
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- 210000000078 claw Anatomy 0.000 claims abstract description 68
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 238000009415 formwork Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of tie pieces, and discloses a concrete mold external tie piece capable of fastening at one side, which is used for fastening a concrete mold at one side of the concrete mold under the condition of not penetrating the concrete mold, and comprises a fixed claw and a movable claw which are oppositely clamped at two sides of the concrete mold, wherein the fixed claw is fixed at one end of a screw rod, and the movable claw is arranged on the screw rod in a sliding manner and is locked by a rotary locking device; the screw is sleeved with an internal thread sleeve, and the internal thread sleeve is screwed onto the screw from one end of the screw and props against the movable claw. According to the utility model, the mould is clamped by adopting a structure similar to a vernier caliper to complete fastening, and the mould is fastened without penetrating through the mould; the internal thread sleeve is adopted to complete fastening, so that enough clamping force can be provided by single-side fastening; the rotary locking device is adopted to ensure that the two clamping jaws are always opposite. The three points are combined, so that a drawknot piece with enough mold clamping force is provided for a formwork supporting scene in which a split screw cannot be used.
Description
Technical Field
The utility model relates to the technical field of tie pieces, in particular to a concrete mold external tie piece capable of fastening at one side.
Background
The concrete can exert mould expanding force on the mould after pouring, and the mould supporting device is required to exert mould clamping force on the mould to resist the mould expanding force, otherwise, the mould is run and even exploded.
The existing concrete mold generally provides clamping force by means of a split screw penetrating the mold, has low cost and simple structure, and can provide very strong clamping force. Therefore, the split screws are used for formwork support as long as the split screws can be used in construction scenes.
There are some construction scenarios where it is inconvenient or even impossible to use a split screw. For example, cast in place concrete columns typically employ ferrules rather than split screw forms when the cross section is small to avoid screw hole effects on strength. When a concrete member (typically a secondary structure such as a protection box of an air conditioner outdoor unit) at the adjacent side is poured, the tightening and loosening of nuts at one end of a pull screw is difficult to operate, and a male corner fastener formwork is usually adopted. Or when reinforcing old building, pour a layer of new concrete against original wall, the counter-pulling screw is blocked by original wall and is difficult to use at this moment, usually support the mould by means of diagonal bracing.
However, whether the column hoop, the external corner fastener or the diagonal bracing is adopted, the mold clamping force is far smaller than that of a counter-pulling screw rod, and the pouring quality is affected.
Disclosure of Invention
The utility model provides a concrete mold external drawknot member capable of completing fastening on one side.
The technical problems to be solved are as follows: the split screw is not suitable for use in use scenes such as limited single side and unable to penetrate a die, but the clamping force of a die supporting device used in the scenes is small.
In order to solve the technical problems, the utility model adopts the following technical scheme: the external drawknot piece of the concrete mould can be fastened on one side, is used for fastening the concrete mould on one side of the concrete mould under the condition of not penetrating the concrete mould, and comprises a fixed claw and a movable claw which are oppositely clamped on two sides of the concrete mould, wherein the fixed claw is fixedly connected with one end of a screw rod, the movable claw is slidingly arranged on the screw rod by taking the length direction of the screw rod as the sliding direction, and the movable claw is locked to rotate around the screw rod by a rotary locking device;
the screw thread of screw rod begins to extend from the one end that the screw rod kept away from fixed jack catch, and the cover is equipped with the internal thread sleeve that is used for guaranteeing also can have sufficient fastening force when the unilateral is fastened on the screw thread, the internal thread sleeve is screwed on the screw rod from screw rod one end and withstands movable jack catch, and internal thread sleeve cross section external border is regular hexagon.
Further, the movable claw is sleeved on the screw and is in clearance fit with the screw, the rotary locking device comprises a rotation stopping chute arranged on the screw along the length direction of the screw and a rotation stopping protrusion fixed on the surface of the movable claw, which is attached to the screw, the rotation stopping protrusion extends into the rotation stopping chute from the movable claw and is arranged in the rotation stopping chute in a sliding manner, and when the rotation stopping protrusion is positioned in the rotation stopping chute, the fixed claw and the movable claw are arranged oppositely.
Further, the rotation stopping protrusions are in a strip shape along the rotation stopping sliding grooves, the length of the rotation stopping protrusions is not smaller than the pitch of the two threads, and all edges and corners of the rotation stopping protrusions are rounded.
Further, the cross sections of the movable claw and the fixed claw are rectangular, the cross sections of the movable claw and the fixed claw are gradually reduced outwards from the screw rod, and the opposite surfaces of the movable claw and the fixed claw are perpendicular to the screw rod.
Further, the fixed claw and the screw are integrally formed, and one end of the screw is bent and forged to form the fixed claw.
Further, the thread is a self-locking thread.
Compared with the prior art, the concrete mold external drawknot piece capable of fastening at one side has the following beneficial effects:
according to the utility model, the mould is clamped by adopting a structure similar to a vernier caliper to finish fastening, so that the mould is ensured to be fastened on the premise of not penetrating the mould; the internal thread sleeve is adopted to complete fastening, so that enough clamping force can be provided on the premise of only one-side fastening; the rotary locking device is adopted to ensure that the two clamping jaws are always opposite. The three points are combined, so that a drawknot piece with enough mold clamping force is provided for a formwork supporting scene in which a split screw cannot be used.
Drawings
FIG. 1 is a schematic view of a concrete mold external drawknot member of the present utility model which can be fastened on one side;
in the figure, 1-fixed claw, 2-screw rod, 21-anti-rotation chute, 3-movable claw and 4-internal thread sleeve.
Detailed Description
As shown in fig. 1, an external drawknot member of a concrete mold capable of fastening at one side is used for fastening the concrete mold at one side of the concrete mold without penetrating the concrete mold, and comprises a fixed claw 1 and a movable claw 3 which are oppositely clamped at two sides of the concrete mold, wherein the fixed claw 1 is fixedly connected at one end of a screw rod 2, the movable claw 3 is slidably arranged on the screw rod 2 by taking the length direction of the screw rod 2 as a sliding direction, and the movable claw 3 is locked to rotate around the screw rod 2 by a rotary locking device;
the fixed jaw 1 and the movable jaw 3 form a structure similar to a vernier caliper, but unlike the vernier caliper, the movable jaw 3 is sleeved on the screw rod 2, so that the fixed jaw 1 cannot face the movable jaw 3 due to rotation, and the two jaws cannot clamp things if the two jaws are not right, so that the rotation of the movable jaw 3 needs to be limited.
The screw thread of the screw rod 2 starts to extend from one end of the screw rod 2 far away from the fixed jaw 1, an internal thread sleeve 4 used for ensuring enough fastening force when the screw rod is fastened on one side is sleeved on the screw thread, the internal thread sleeve 4 is screwed onto the screw rod 2 from one end of the screw rod 2 and props against the movable jaw 3, and the outer edge of the cross section of the internal thread sleeve 4 is in a regular hexagon.
The female socket 4 is selected to be used instead of the nut because the clamping force provided when the single nut is used for fastening at one side is insufficient, and the work of screwing the nut is large if a plurality of nuts are used. Thus, here, a female threaded sleeve 4 is chosen as a fastener, which is hexagonal on the outside, like a nut, and which can be screwed like a nut, but which provides a clamping force that is considerably greater than that of a nut. Note that the internally threaded sleeve 4 does not have any connection to the movable jaw 3, which would otherwise affect the rotation of the internally threaded sleeve 4.
The movable claw 3 is sleeved on the screw rod 2 and is in clearance fit with the screw rod 2, the rotary locking device comprises a rotation stopping chute 21 formed in the screw rod 2 along the length direction of the screw rod 2 and a rotation stopping protrusion fixed on the surface of the movable claw 3, which is attached to the screw rod 2, the rotation stopping protrusion extends into the rotation stopping chute 21 from the movable claw 3 and is arranged in the rotation stopping chute 21 in a sliding manner, and when the rotation stopping protrusion is positioned in the rotation stopping chute 21, the fixed claw 1 and the movable claw 3 are arranged oppositely.
The movable claw 3 is penetrated by the screw rod 2, and the inner diameter of the penetrated hole is slightly larger than the larger diameter of the screw thread of the screw rod 2 in order to ensure that the movable claw can move smoothly. The rotation stopping protrusions are welded on the inner walls of the holes of the movable claws 3.
The rotation stopping protrusion is in a strip shape along the rotation stopping chute 21, the length of the rotation stopping protrusion is not smaller than the pitch of two threads, and all edges and corners of the rotation stopping protrusion are rounded. The anti-rotation protrusion in the embodiment is an iron wire, and the two ends of the anti-rotation protrusion are welded on the inner wall of the sleeve of the movable claw 3 after being rounded.
If the rotation-preventing protrusion is too small, it may enter the inside of the thread, resulting in failure to suppress rotation. If the rotation stopping protrusions are provided with edges, the rotation stopping protrusions are easy to clamp on the threads, so that the movable claws 3 cannot slide.
The cross sections of the movable claw 3 and the fixed claw 1 are rectangular, the cross sections of the movable claw 3 and the fixed claw 1 are gradually reduced outwards from the screw rod 2, and the opposite surfaces of the movable claw 3 and the fixed claw 1 are perpendicular to the screw rod 2.
The claw with the structure is designed to be matched with the stress condition of the claw, the root of the claw is stressed more and the end of the claw is stressed less, so that the material is concentrated at the position with higher stress.
In this embodiment, the fixing claw 1 and the screw 2 are integrally formed, and are formed by bending and forging one end of the screw 2. The structure is similar to a crowbar, and has low processing cost and high structural strength.
In this embodiment, the thread is a self-locking thread. The friction angle of the thread is larger than the lead angle, so that the thread is not easy to loose.
The utility model relates to a concrete mold external drawknot piece capable of fastening on one side, which comprises the following using method:
step one: taking out the utility model at one side of the concrete mould which is easy to operate, clamping the two clamping jaws on the concrete mould, and ensuring that one end of the movable clamping jaw 3 is close to a constructor;
step two: the internal thread sleeve 4 is screwed to complete the fastening.
The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.
Claims (6)
1. The utility model provides a can accomplish concrete mould outside drawknot piece of fastening in unilateral for the concrete mould unilateral is fastened under the condition of not penetrating the concrete mould, its characterized in that: the concrete mold comprises a fixed claw (1) and a movable claw (3) which are oppositely clamped at two sides of the concrete mold, wherein the fixed claw (1) is fixedly connected to one end of a screw (2), the movable claw (3) is slidably arranged on the screw (2) by taking the length direction of the screw (2) as a sliding direction, and the movable claw (3) is locked to rotate around the screw (2) through a rotary locking device;
the screw thread of screw rod (2) is from screw rod (2) one end of keeping away from fixed jack catch (1) begins to extend, and the cover is equipped with on the screw thread and is used for guaranteeing also can have sufficient fastening force's internal thread sleeve (4) when the unilateral is fastened, internal thread sleeve (4) are screwed on screw rod (2) from screw rod (2) one end and are withstood movable jack catch (3), and internal thread sleeve (4) cross section outward flange is regular hexagon.
2. A concrete mould external drawknot member for accomplishing fastening on one side according to claim 1, wherein: the movable claw (3) is sleeved on the screw rod (2) and is in clearance fit with the screw rod (2), the rotary locking device comprises a rotation stopping sliding groove (21) formed in the screw rod (2) along the length direction of the screw rod (2) and rotation stopping protrusions fixed on the surface, close to the screw rod (2), of the movable claw (3), the rotation stopping protrusions extend into the rotation stopping sliding groove (21) from the movable claw (3) and are arranged in the rotation stopping sliding groove (21) in a sliding mode, and when the rotation stopping protrusions are located in the rotation stopping sliding groove (21), the fixed claw (1) and the movable claw (3) are arranged oppositely.
3. A concrete mould external drawknot member for accomplishing fastening on one side according to claim 2, wherein: the rotation stopping protrusions are in a strip shape along the rotation stopping sliding grooves (21), the length of the rotation stopping protrusions is not smaller than the pitch of the two threads, and all edges and corners of the rotation stopping protrusions are rounded.
4. A concrete mould external drawknot member for accomplishing fastening on one side according to claim 1, wherein: the cross sections of the movable claw (3) and the fixed claw (1) are rectangular, the cross sections of the movable claw (3) and the fixed claw (1) are gradually reduced outwards from the screw (2), and the opposite surfaces of the movable claw (3) and the fixed claw (1) are perpendicular to the screw (2).
5. A concrete mould external drawknot member for accomplishing fastening on one side according to claim 1, wherein: the fixed claw (1) and the screw (2) are integrally formed, and one end of the screw (2) is bent and forged.
6. A concrete mould external drawknot member for accomplishing fastening on one side according to claim 1, wherein: the thread is a self-locking thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321795511.8U CN220395200U (en) | 2023-07-10 | 2023-07-10 | Concrete mold external drawknot piece capable of fastening at single side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321795511.8U CN220395200U (en) | 2023-07-10 | 2023-07-10 | Concrete mold external drawknot piece capable of fastening at single side |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220395200U true CN220395200U (en) | 2024-01-26 |
Family
ID=89602630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321795511.8U Active CN220395200U (en) | 2023-07-10 | 2023-07-10 | Concrete mold external drawknot piece capable of fastening at single side |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220395200U (en) |
-
2023
- 2023-07-10 CN CN202321795511.8U patent/CN220395200U/en active Active
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