CN210117932U - Formwork supporting pull rod with elastic air bag plug - Google Patents
Formwork supporting pull rod with elastic air bag plug Download PDFInfo
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- CN210117932U CN210117932U CN201920500542.3U CN201920500542U CN210117932U CN 210117932 U CN210117932 U CN 210117932U CN 201920500542 U CN201920500542 U CN 201920500542U CN 210117932 U CN210117932 U CN 210117932U
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Abstract
The utility model discloses a formwork pull rod with an elastic air bag plug, which comprises an embedded section and an exposed section, wherein the embedded section and the exposed section are connected by the elastic air bag plug; the pipe section is a pipe with an inner pipe thread, and one end of the pipe is provided with a ring; the annular elastic air bag is tightly attached to the ring and sleeved on the pipe section. The utility model relates to a formwork pull rod structure with elasticity gasbag end cap reasonable in design demolishs easily, does not harm the concrete quality.
Description
Technical Field
The utility model relates to a concrete structure construction technical field, concretely relates to pull rod structure of waterproof concrete structure construction formwork.
Background
The construction formwork of waterproof concrete structure usually adopts a method of arranging an inner pull rod to bear the pressure of concrete, and arranging a water stop ring to be permanently embedded in the concrete without taking out the inner pull rod.
As shown in fig. 1, the conventional method of making a formwork system is to connect a rod member having threads at both ends thereof to an external formwork fixing member through two wood blocks at both ends. After the concrete is cast and formed to reach the designed strength, as shown in fig. 2, the external template is removed, the wood block is removed, the exposed bolt rod is cut off from the bottom of the recess by oxygen cutting, and the recess is filled with cement mortar polymer. According to the method, on one hand, the concrete is damaged due to the removal of the wood blocks, the surface of the concrete is removed to form pits, and flame and high temperature generated by the oxygen cutting bolt rod do little harm to the surface of the concrete; improper operation can result in unexpected concrete quality. On the other hand, the cut bolt bar also becomes waste material which can not be used, and the cost is relatively high.
As shown in fig. 3, a formwork supporting pull rod with a detachable plug is provided with a detachable plug at one end or two ends of a pull rod embedding section, the detachable plug is a rotating body, and after concrete pouring is completed, an embedded plug part is detached: the external template is firstly removed, the exposed section of the round-to-square structure is clamped by a clamp such as a wrench or a vice and is outwards screwed, the inner hexagonal structure of the removable plug flat surface is clamped by a screwdriver or an inner hexagonal wrench and is outwards screwed, and finally, the space left after the plug is screwed is filled with cement mortar polymer. But the detachable plug is bonded with the concrete, so that friction force exists during the rotary detachment, the detachment is inconvenient, the concrete is damaged, and the quality of the poured concrete cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a formwork pull rod that is equipped with elasticity gasbag end cap that is used for concrete construction that structural design is reasonable, demolish easier, do not harm the concrete quality.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
the utility model provides a formwork pull rod with elasticity gasbag end cap, pull rod is including burying the section and exposing the section, its characterized in that: the embedded section is connected with the exposed section through an elastic air bag plug, the elastic air bag plug comprises a pipe section and an annular elastic air bag, and the annular elastic air bag is connected to the pipe section in a surrounding mode.
Furthermore, the exposed section is one or two, and can be arranged on one side or two sides of the embedded section.
Furthermore, the pipe section is a pipe with an inner pipe thread, and one end of the pipe is provided with a ring; the annular elastic air bag is tightly attached to the ring and sleeved on the pipe section.
Further, there is a partition in the pipe section.
Furthermore, the thread directions of the inner pipes on two sides of the partition in the pipe section are opposite.
Furthermore, the elastic air bag is provided with a valve core.
Further, the number of the valve cores is two or more.
Furthermore, the exposed end of the exposed section is provided with a round-to-square structure.
Further, the elastic air bag is made of elastic rubber. The elastic air bag is made of elastic rubber materials, and after the elastic air bag is inflated, the air bag is slightly expanded except for filling the air bag cavity. After the air bag is deflated, the inflated air bag is also shrunk, so that the air bag can be smoothly separated from the concrete.
Specifically, the technical scheme of the formwork supporting pull rod for the double-side formwork system is as follows:
the formwork support pull rod with the elastic air bag plugs comprises an embedded section, two exposed sections and two elastic air bag plugs which are connected with the embedded section and the exposed sections. The elastic air bag plugs are symmetrically connected to two ends of the embedded section.
In another scheme, the technical scheme of the formwork supporting pull rod for the single-side formwork system is as follows:
the formwork support pull rod with the elastic air bag plug comprises an embedded section, an exposed section and the elastic air bag plug which is connected with the embedded section and the exposed section.
Advantageous effects
The utility model relates to a formwork pull rod structure with elasticity gasbag end cap reasonable in design demolishs easily, does not harm the concrete quality.
The plug inflatable elastic air bag is separated from the concrete through deflation and contraction, so that the concrete cannot be damaged, and the quality of the concrete is ensured.
The elastic air bag is made of rubber, and a plug formed by combining the air bag and the pipe section can be reused and is low in cost.
Each elastic air bag is provided with two or more valve cores, and the valve cores are prevented from being accidentally lost, so that the working reliability of the valve cores is improved.
The exposed section of the formwork supporting pull rod is additionally provided with a round and square changing structure, so that the clamps such as a wrench, a vice and the like can be conveniently screwed and unscrewed.
Drawings
Fig. 1 is a schematic structural view of a prior art tie rod formwork system during assembly.
Fig. 2 is a schematic structural view of a prior art tie rod formwork system after removal.
Fig. 3 is a schematic structural diagram of a formwork-supporting pull rod with a detachable plug in the prior art.
Fig. 4 is a schematic structural view of a formwork tie rod with an elastic air bag plug of the utility model.
Fig. 5 is a schematic view of the structure of the plug with the elastic air bag.
Fig. 6 is a schematic structural view of a formwork tie rod with an elastic air bag plug in assembly in embodiment 1 of the present invention.
Fig. 7 is a schematic structural view of a form-supporting pull rod with an elastic air bag plug according to embodiment 1 after form removal.
Fig. 8 is a schematic structural view of the formwork tie rod with an elastic air bag plug in the assembly of embodiment 2.
Fig. 9 is a schematic structural view of a form-supporting pull rod with an elastic air bag plug of the utility model in the embodiment 2 after form removal.
Description of reference numerals:
the embedded section 1, the exposed section 2, the round-to-square structure 21, the detachable plug 3, the inner hexagonal structure 31, the water stop steel plate 4, the elastic air bag plug 5, the pipe section 51, the pipe thread (left-handed) 52, the pipe thread (right-handed) 53, the annular air bag 54, the elastic air bag cavity 55, the valve core 56, the ring 57, the partition 58, the template 6, the concrete 7, the anchor bars 8 and the cement mortar 9.
Detailed Description
The structures referred to in the present invention or these terms of art used are further described below. In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. We do not exclude that the invention can also be implemented with other embodiments and that the structure of the invention can be changed without violating the scope of the invention.
In fig. 1-2, a rod member (embedded section 1) having threads at both ends is connected to an external form fixing member through two blocks at both ends to perform concrete construction. When the waterproof concrete formwork is used in a waterproof concrete formwork, the middle of the embedded section is provided with the water stop steel plate 4. And after the wood blocks are removed, filling the hollow hole by using a cement mortar polymer.
In fig. 3, the detachable plug 3 connects the embedded section 1 and the exposed section 3, and concrete construction is performed after an external formwork is applied, and when the detachable plug is used in a waterproof concrete formwork, a water stop steel plate 4 is arranged in the middle of the embedded section. And then, firstly, removing the external template, clamping the round-to-square structure 21 of the exposed section 2 by using a clamp such as a wrench or a vice and the like, outwards rotationally removing the round-to-square structure, clamping the inner hexagonal structure 31 of the flat surface of the detachable plug 3 by using a screwdriver or an inner hexagonal wrench, outwards rotationally removing the round-to-square structure, and finally filling the space left after the plug is rotationally removed by using a cement mortar polymer.
The utility model discloses a formwork pull rod with elastic airbag end cap, as shown in fig. 4 and fig. 5, connect through being equipped with elastic airbag end cap 5 and bury section 1 and expose section 2, be equipped with stagnant water steel sheet 4 at burying section middle part, bury section 1 and can one end be connected with elastic airbag end cap 5 and expose section 2, also can be connected with at the both ends of burying section 1 and be equipped with elastic airbag end cap 5 and expose section 2. One end of the exposed section 2 is a round-to-square structure 21.
The elastic air bag plug 5 comprises a pipe section 51 and an annular elastic air bag 54, wherein the pipe section 51 is a hollow pipe, pipe threads are arranged in the pipe, and a partition 58 is arranged in the middle of the pipe. Wherein, the directions of the pipe threads on the two sides of the partition 58 are opposite, and in the specific embodiment, one side is a pipe thread (left-hand thread) 52 which is generally used for connecting the exposed section 2; the other side is a pipe thread (right-handed) 53 for screwing into the embedded section 1. When the bladder 54 self-contracts (deflates) and disengages from the concrete 7, the plug 5 can be separated from the embedded section 1 by continuously screwing in the exposed section 2 in one direction. The annular elastic air bag 54 is inflated and slightly expanded to form an air bag cavity 55, the cavity 55 surrounds the outer wall of the pipe section 51, and after concrete construction, the pipe section 51 is separated from the concrete 7 by the expanded elastic air bag and the air bag cavity. A ring 57 is provided at one end of the tubular section 51, and more particularly, a ring 57 is provided at the end of the tubular section 51 that receives the exposed section 2. The ring 57 is adapted to conform to the face of the form and the bladder 54, when inflated, conforms to the other face of the ring 57 to provide a better fit of the bladder 54 to the form 6. A valve core 56 is provided on the elastic bladder 54 for inflation and deflation of the elastic bladder 54. Inflation and deflation of the valve core 56 may cause the elastic bladder 54 to expand and contract, or the gas within the bladder cavity 55 may increase or decrease, causing the bladder cavity 55 to become larger or smaller. Each plug 5 is provided with two or more valve cores 56, so that the valve cores 56 are prevented from being accidentally lost, the working reliability of the valve cores 56 is improved, and the increase and the contraction of the elastic air bag and the cavity of the elastic air bag are ensured.
The diameters of the embedded section 1 and the exposed section 2 are determined by calculation according to the stress. The length of the embedded section 1 is determined according to the thickness of the concrete member, and the length of the exposed section is mainly determined according to factors such as the thickness of the template. The diameters of the embedded section 1 and the exposed section 2 are generally consistent to be 12-20 mm, and the corresponding threads are M12-20 mm.
Example 1 two-sided template system: the wall thickness is 350mm and the height is 4000mm when the wall formwork is used for a vertical wall formwork. C35 concrete, water-proof grade S6
As shown in fig. 6 and 7, the formwork tie rod with the elastic air bag plug comprises an embedded section 1, two exposed sections 2 and two elastic air bag plugs 5 connecting the embedded section 1 and the exposed sections 2. The elastic air bag plug 5 comprises a pipe section 52 and an annular elastic air bag 54, the annular elastic air bag is sleeved on the outer wall of the pipe section 51 after being inflated, a ring 57 is arranged at one end of the pipe section 51 close to the exposed section 2, and the elastic air bag 54 is tightly attached to one surface of the ring 57. The elastic air bag 54 is 50mm high and 45mm diameter and made of rubber with thickness of 5mm, and the rubber has certain elasticity; the diameter of the annular central hole is 25 mm. Pipe thread section of pipe segment 51: m18 is 40mm long, the outer diameter of the ring is 40mm, the thickness of the ring is 3mm, and the material is steel. The diameter of the embedded section 1 is 18mm and the length is 290 mm. Wherein both segments 52,53 of the threaded section are 20mm long. The embedded section 1 is made of steel. The exposed section 2 has a diameter of 18mm and a length of 3100 mm. Wherein the thread segments are 50mm and 20mm long respectively. The exposed section 2 is also made of steel. The valve core 56 is a conventional valve core, such as a bicycle valve core. The air pressure in the air bag is 350kPa, and the air bag is filled and expanded by 3-6 mm.
As shown in fig. 6, the inflated elastic air bag 54 is sleeved on the pipe section 51, the elastic air bag 54 is tightly attached to the ring 57, the connecting sections of the embedded section 1 and the exposed section 2 are respectively screwed into the pipe section 51 for fixation, the middle part of the embedded section is provided with the water stop steel plate 4, and after the completion, the outer template 6 and the template fixing part are installed on the outer side of the plug 5. And after the formwork supporting pull rod provided with the elastic air bag plug is assembled, the formwork supporting pull rod is connected with an external formwork 6 to form a formwork system, and concrete construction is carried out. After the construction is finished, removing the formwork: the external template 6 is firstly removed, the valve core 56 is pressed to release the gas in the cavity 55 of the elastic air bag, the elastic air bag 54 is contracted and separated from the concrete 7, and the round-to-square structure 21 of the exposed section 2 is clamped by a clamp such as a spanner or a vice to rotate inwards, so that the plug 5 is separated from the embedded section 1. And finally, filling the space left after the plug 5 with the elastic air bag is disassembled in a rotating mode with cement mortar polymer 9. Fig. 7 is a schematic structural view after the form removal of embodiment 1.
Because the elastic air bag plug 5 is made of rubber, the air bag shrinks after being deflated and the air bag cavity also shrinks, the volume of the whole air bag is reduced, and the air bag part which is originally tightly attached to the concrete is separated from the concrete 7 due to the shrinkage. Thus, when the plug 5 provided with the elastic air bag is separated from the embedded section 1, the air bag 54 is separated from the concrete 7 in advance, so that the friction force for removing is not generated, the plug 5 is very easy to remove, the surface of the concrete 7 is not damaged, and the quality of concrete construction is ensured.
Example 2 single sided formwork system: lining template of tunnel concrete
As shown in fig. 8 and 9, the formwork tie rod with the elastic air bag plug comprises an embedded section 1, an exposed section 2 and a plug 5 with the elastic air bag plug, wherein the plug 5 is used for connecting the embedded section 1 and the exposed section 2, the plug 5 with the elastic air bag is composed of a pipe section 52 and an annular elastic air bag 54, the annular elastic air bag is sleeved on the outer wall of the pipe section 51 after being inflated, a ring 57 is arranged at one end of the pipe section 51 close to the exposed section 2, and the air bag 54 is tightly attached to one surface of the ring 57.
The formwork tie rods of the above-described single-sided formwork system are generally used for lining formworks such as tunnel concrete.
As shown in fig. 8, the inflated elastic air bag 54 is sleeved on the pipe section 51, the elastic air bag 54 is tightly attached to the ring 57, the connecting sections of the embedded section 1 and the exposed section 2 are respectively screwed into the pipe section 51 for fixing, and the middle part of the embedded section is provided with the water stop steel plate 4. After the construction, an external template and a template fixing component are arranged on the outer side of the plug 5, and an anchor bar 8 is arranged at the other end of the embedded section 1 to fix the concrete 7 and the earth rock mass. And after the formwork supporting pull rod provided with the elastic air bag plug is assembled, the formwork supporting pull rod is connected with an external formwork to form a formwork system, and concrete construction is carried out. After the construction is finished, removing the formwork: the external form is removed, the valve core 56 is pressed to release the gas in the cavity 55 of the elastic air bag, and the elastic air bag 54 contracts, so that the elastic air bag 54 is separated from the concrete 7, and the round-to-square structure 21 of the exposed section 2 is clamped by a clamp such as a wrench or a vice to rotate inwards, so that the plug 5 is separated from the embedded section 1. And finally, filling the space left after the plug 5 with the elastic air bag is disassembled in a rotating mode with cement mortar polymer 9. Fig. 9 is a schematic structural view after the form removal of embodiment 2.
Claims (9)
1. The utility model provides a formwork pull rod with elasticity gasbag end cap, pull rod is including burying the section and exposing the section, its characterized in that: the embedded section is connected with the exposed section through an air bag plug, the elastic air bag plug comprises a pipe section and an annular elastic air bag, and the annular elastic air bag is connected to the pipe section in a surrounding mode.
2. The formwork tie rod with the elastic air bag plug as claimed in claim 1, wherein: the exposed section is one or two, and can be arranged on one side or two sides of the embedded section.
3. The formwork tie rod provided with the elastic air bag plug as claimed in claim 1 or 2, wherein: the pipe section is a pipe with an inner pipe thread, and one end of the pipe is provided with a ring; the annular elastic air bag is tightly attached to the ring and sleeved on the pipe section.
4. The formwork tie rod with the elastic air bag plug as claimed in claim 3, wherein: the pipe section is internally provided with a partition.
5. The formwork tie rod with the elastic air bag plug as claimed in claim 4, wherein: the thread directions of the inner pipes on two sides of the partition in the pipe section are opposite.
6. The formwork tie rod with the elastic air bag plug as claimed in claim 1, wherein: the elastic air bag is provided with a valve core.
7. The formwork tie rod with the elastic air bag plug as claimed in claim 6, wherein: the number of the valve cores is two or more.
8. The formwork tie rod with the elastic air bag plug as claimed in claim 3, wherein: the exposed end of the exposed section is provided with a round-to-square structure.
9. The formwork tie rod with the elastic air bag plug as claimed in claim 1, wherein: the elastic air bag is made of elastic rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920500542.3U CN210117932U (en) | 2019-04-15 | 2019-04-15 | Formwork supporting pull rod with elastic air bag plug |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920500542.3U CN210117932U (en) | 2019-04-15 | 2019-04-15 | Formwork supporting pull rod with elastic air bag plug |
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| Publication Number | Publication Date |
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| CN210117932U true CN210117932U (en) | 2020-02-28 |
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| CN201920500542.3U Active CN210117932U (en) | 2019-04-15 | 2019-04-15 | Formwork supporting pull rod with elastic air bag plug |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232995A (en) * | 2021-12-31 | 2022-03-25 | 歌山建设集团有限公司 | Water stop screw assembly and construction method thereof |
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2019
- 2019-04-15 CN CN201920500542.3U patent/CN210117932U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232995A (en) * | 2021-12-31 | 2022-03-25 | 歌山建设集团有限公司 | Water stop screw assembly and construction method thereof |
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