CN210216928U - Tool for limiting thickness of protective layer of delivery engineering concrete - Google Patents
Tool for limiting thickness of protective layer of delivery engineering concrete Download PDFInfo
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- CN210216928U CN210216928U CN201920996398.7U CN201920996398U CN210216928U CN 210216928 U CN210216928 U CN 210216928U CN 201920996398 U CN201920996398 U CN 201920996398U CN 210216928 U CN210216928 U CN 210216928U
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Abstract
The utility model belongs to the technical field of concrete layer limiting tools, in particular to a tool for limiting the thickness of a concrete protective layer of a sending-out project, which comprises a V-shaped frame consisting of two supporting rods, supporting supports which are arranged at the end parts of the two supporting rods and are matched with a main rib, adjusting cylinders which are arranged at the connecting ends of the two supporting rods, internal threads which are arranged in the adjusting cylinders, and adjusting bolts which are arranged on the internal threads and are used for adjusting the distance between the main rib and a pouring shell; the protective layer can be arranged between the reinforcement cage and the pouring shell, so that the thickness of the protective layer from the outermost layer of reinforcement to the concrete surface is ensured to reach the standard range.
Description
Technical Field
The utility model relates to a concrete layer injects instrument technical field, concretely relates to see off engineering concrete protective layer thickness and inject instrument.
Background
In the process of line erection and in the line engineering of the power plant delivery project, the thickness of the concrete protective layer is 60mm, which is related to the important factors of the mechanical property and the service life of the reinforced concrete structural member and directly influences the structural bearing capacity, the durability and other properties of the concrete structural member; however, in the process of arranging the reinforcement cage, the thickness of the concrete protective layer is mostly judged according to the experience of operators, and particularly, the limitation of the thickness from the steel bars on the outer side of the reinforcement cage to the surface of the outermost concrete layer on the side surface is realized.
A reinforcing bar fixing device for concrete pouring is disclosed in an authorized notice number CN202299139U, and comprises an inner clamp and an outer limiting sheet, and is characterized in that: the outer limiting piece is of a gear-shaped structure and is arranged outside the arc-shaped head of the inner clamp. Compared with the prior art, the utility model, simple structure, the distance between reinforcing bar and the template has been injectd to outer spacing piece, make the concrete effectively wrap up the reinforcing bar and form the protective layer, prevent that the reinforcing bar from exposing, safe and reliable, however this structure exists the distance and can not adjust, thereby can not satisfy concrete user's concrete needs, consequently need one kind urgently and can set up between steel reinforcement cage and pouring casing and can adjust the limiting device of protective layer thickness, ensure that the thickness of pouring reaches standard range.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a see off engineering concrete protective layer thickness and prescribe a limit to instrument can set up at the steel reinforcement cage and pour between the casing and can adjust the protective layer thickness to ensure that the protective layer thickness of outmost reinforcing bar to concrete surface reaches standard range.
In order to solve the problems, the utility model provides a tool for limiting the thickness of a protective layer of sending out engineering concrete, which comprises a V-shaped frame consisting of two supporting rods, supporting supports which are arranged at the end parts of the two supporting rods and are matched with a main rib, an adjusting cylinder arranged at the connecting ends of the two supporting rods, an internal thread arranged in the adjusting cylinder, and an adjusting bolt arranged on the internal thread and used for adjusting the distance between the main rib and a pouring shell;
the end part of the adjusting bolt is provided with a ball head, and the diameter numerical value of the ball head is smaller than the diameter numerical value of the cross section of the adjusting bolt.
And a butterfly bolt head is arranged at the end part of the adjusting bolt.
The support is a semicircular support body, and the end part of the support rod is provided with an arc contact surface matched with the support.
The end part of the support rod connected with the adjusting cylinder is provided with a transition arc-shaped rod which is used for dispersing concentrated stress and is arc-shaped.
The lower end surface of the adjusting cylinder is flush with the lower surface of the transition arc-shaped rod.
The included angle between the two support rods is 70.6 degrees.
The diameter of the support bracket is 40-50 mm.
The utility model discloses because the minimum distance of side reinforcing bar to outermost layer concrete surface can't carry out effective control among the prior art, cause protective layer thickness to appear being less than 60mm and unqualified phenomenon, support through V type frame both ends holds in the palm and carries out chucking contact with the main muscle of vertical setting and realize two point supports, and set up adjusting bolt in the regulation section of thick bamboo of two bracing piece links, and rotate through adjusting bolt spiral in adjusting a section of thick bamboo, realize the bulb tip for the distance adjustment of adjusting a section of thick bamboo right-hand member face, and then realize the main muscle and pour the distance adjustment between the casing, ensure that the protective layer thickness satisfies and surpass the national standard requirement even.
In addition, the adopted support is a semicircular support body, the diameter of the main rib adopted in the use process is 22-32 mm, and the diameter of the outer stirrup is generally 8 mm, so that the diameter of the semicircular support body is designed to be 40-50mm for convenience of adjustment, the arranged adjusting cylinder is provided with an internal thread, an adjusting bolt matched with the internal thread is arranged in the adjusting cylinder, and forward and backward adjustment of the ball head is realized through forward and backward adjustment of the adjusting bolt on the adjusting cylinder; in addition, the transition arc-shaped rod is arranged on the contact surface of the supporting rod and the adjusting cylinder, so that the stress concentration phenomenon caused by direct hard contact of the supporting rod and the adjusting cylinder can be avoided, meanwhile, the space of the adjusting cylinder on the inner side of the V-shaped frame is increased, and an operator can conveniently control the adjusting bolt to rotate by using hands or tools; the lower end surface of the adjusting cylinder is flush with the right surface of the transition arc-shaped rod, so that the left end surface of the adjusting cylinder is far away from a connecting point of the supporting rod and the adjusting cylinder, the adjusting position of the bolt head is in a larger space, and the bolt head is convenient to position for welding or fixing in other modes; the ball head is arranged at the end part of the adjusting bolt, so that the plane at the end part of the adjusting bolt is prevented from directly contacting with the pouring shell, the rotating adjusting bolt is caused, in the process of rotating the adjusting bolt, the contact surface is easy to deflect due to the end surface, the whole body is inclined, the measurement width ratio is even smaller than the width, and the unqualified phenomenon that the thickness of the protective layer is smaller than 60mm is caused.
Drawings
FIG. 1 is a schematic side view of the whole body of the present invention;
fig. 2 is a schematic top view of the support rod of the present invention;
fig. 3 is a schematic structural view of an adjusting bolt according to a first embodiment of the present invention;
fig. 4 is a schematic structural view of an adjusting bolt in the second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 4 of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
Example one
As shown in fig. 1-3: a tool for limiting the thickness of a protective layer of delivered engineering concrete comprises a V-shaped frame consisting of two supporting rods 3, supporting supports 2 which are arranged at the end parts of the two supporting rods 3 and matched with a main reinforcement 1, an adjusting cylinder arranged at the connecting end of the two supporting rods, an internal thread 8 arranged in the adjusting cylinder, and an adjusting bolt 4 which is matched with the internal thread 8 and used for adjusting the distance between the main reinforcement 1 and a pouring shell 6;
the end part of the adjusting bolt 4 is provided with a ball head 7, and the diameter numerical value of the ball head 7 is smaller than the diameter numerical value of the cross section of the adjusting bolt 4.
The support holder 2 is a semicircular holder body, and the end part of the support rod 3 is provided with an arc contact surface 31 matched with the support holder 2.
The connection end part of the support rod 3 and the adjusting cylinder 5 is provided with a transition arc-shaped rod 32 which is used for dispersing concentrated stress and is arc-shaped.
The right end surface of the adjusting cylinder 5 is flush with the right surface of the transition arc-shaped rod 32.
The included angle α between the two support rods 3 is 70.6 degrees.
The diameter of the support bracket 2 is 45 mm.
In the embodiment, the adjusting range of the adjusting bolt is 10-18 mm, the distance between the outer walls of the two support brackets is 95 mm, and the distance from the rightmost endpoint of the outer surface of the support bracket to the right end face of the adjusting cylinder is 50mm, so that the adjusting range of the distance between the outermost side of the main rib and the surface of the pouring shell is 60-68 mm, and the design requirements of different units on the thickness of the protective layer can be further met, and in addition, the adjusting bolt adopted in the embodiment is an M8 bolt; wherein the support bracket and the support rod are fixed by welding, and the transition arc-shaped rod and the adjusting cylinder are fixedly connected by welding.
Example two
As shown in fig. 4, the difference from the first embodiment is that:
the end part of the adjusting bolt is provided with a butterfly bolt head 9.
The adjusting bolt end part adopted in the embodiment adopts a butterfly bolt head mode, and the adjusting bolt can be adjusted manually by an operator or by a simple operating tool.
The utility model discloses a use method: the device is characterized in that a pouring shell is arranged on a road surface to be constructed, a steel bar structure is laid in a groove body formed by the pouring shell, the device is placed between the main reinforcement at the outermost side of the steel bar structure and the pouring shell after the placement is finished, and the thickness of the protective layer is adjusted through the device.
The thickness of the protective layer is specified according to the construction and acceptance specification Q/GDW1153-2012 of the 1000kV overhead transmission line:
6.2.10 the cast foundation should be smooth and have a single leg size tolerance that meets the following criteria:
a) thickness of the protective layer: -5 mm;
secondly, calculating the thickness of the protective layer of the concrete according to the outer edge of the outermost layer of steel bars (including stirrups, constructional bars, distribution bars and the like) according to the thickness of the protective layer in the concrete structure design specification (GB50010-2010) (2015 revision), referring to the environment category of the concrete structure, and then comparing the minimum thickness of the concrete protective layer to obtain that the thickness of the protective layer is more than 60 mm.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A tool for limiting the thickness of a protective layer of delivery engineering concrete is characterized in that: the device comprises a V-shaped frame consisting of two support rods, support supports which are arranged at the end parts of the two support rods and are matched with main reinforcements, adjusting cylinders arranged at the connecting ends of the two support rods, internal threads arranged in the adjusting cylinders, and adjusting bolts arranged on the internal threads and used for adjusting the distance between the main reinforcements and a pouring shell;
the end part of the adjusting bolt is provided with a ball head, and the diameter numerical value of the ball head is smaller than the diameter numerical value of the cross section of the adjusting bolt.
2. The work-out concrete cover thickness limiting tool of claim 1, wherein: and a butterfly bolt head is arranged at the end part of the adjusting bolt.
3. The work-out concrete cover thickness limiting tool of claim 2, wherein: the support is a semicircular support body, and the end part of the support rod is provided with an arc contact surface matched with the support.
4. The work-out concrete cover thickness limiting tool of claim 3, wherein: the end part of the support rod connected with the adjusting cylinder is provided with a transition arc-shaped rod which is used for dispersing concentrated stress and is arc-shaped.
5. The work-out concrete cover thickness limiting tool of claim 4, wherein: the lower end surface of the adjusting cylinder is flush with the lower surface of the transition arc-shaped rod.
6. The work-out concrete cover thickness limiting tool of claim 5, wherein: the included angle between the two support rods is 70.6 degrees.
7. The work-out concrete cover thickness limiting tool of claim 6, wherein: the diameter of the support bracket is 40-50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920996398.7U CN210216928U (en) | 2019-06-28 | 2019-06-28 | Tool for limiting thickness of protective layer of delivery engineering concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920996398.7U CN210216928U (en) | 2019-06-28 | 2019-06-28 | Tool for limiting thickness of protective layer of delivery engineering concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210216928U true CN210216928U (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920996398.7U Expired - Fee Related CN210216928U (en) | 2019-06-28 | 2019-06-28 | Tool for limiting thickness of protective layer of delivery engineering concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210216928U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195761A (en) * | 2020-10-16 | 2021-01-08 | 中铁十六局集团第三工程有限公司 | Reinforcing bar skeleton protective layer regulator |
| CN112431358A (en) * | 2020-11-09 | 2021-03-02 | 浙江交通职业技术学院 | Reinforcing steel bar protective layer thickness control device and construction process |
| CN114197864A (en) * | 2021-12-17 | 2022-03-18 | 中建八局第四建设有限公司 | Column cap staggered platform template for guaranteeing thickness of column reinforcement protective layer |
-
2019
- 2019-06-28 CN CN201920996398.7U patent/CN210216928U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195761A (en) * | 2020-10-16 | 2021-01-08 | 中铁十六局集团第三工程有限公司 | Reinforcing bar skeleton protective layer regulator |
| CN112431358A (en) * | 2020-11-09 | 2021-03-02 | 浙江交通职业技术学院 | Reinforcing steel bar protective layer thickness control device and construction process |
| CN114197864A (en) * | 2021-12-17 | 2022-03-18 | 中建八局第四建设有限公司 | Column cap staggered platform template for guaranteeing thickness of column reinforcement protective layer |
| CN114197864B (en) * | 2021-12-17 | 2023-02-17 | 中建八局第四建设有限公司 | Column cap staggered platform template for guaranteeing thickness of column reinforcement protective layer |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |