CN113339001A - Telescopic hollow protective air bag and support protective system - Google Patents
Telescopic hollow protective air bag and support protective system Download PDFInfo
- Publication number
- CN113339001A CN113339001A CN202110794308.8A CN202110794308A CN113339001A CN 113339001 A CN113339001 A CN 113339001A CN 202110794308 A CN202110794308 A CN 202110794308A CN 113339001 A CN113339001 A CN 113339001A
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- 230000001681 protective effect Effects 0.000 title claims abstract description 29
- 230000008093 supporting effect Effects 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims description 36
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 239000002775 capsule Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/05—Lining with building materials using compressible insertions
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
Abstract
The application provides a telescopic hollow protective air bag and a supporting protection system, which comprise an air bag main body, wherein the air bag main body is provided with a cavity and a hollow hole which are mutually independent, and the two ends of the air bag main body in the extension direction of the hollow hole are respectively a first supporting end and a second supporting end; the airbag main body is provided with a plurality of annular folding parts which are arranged in the extending direction of the hollow hole, the annular folding parts are positioned between the first supporting end and the second supporting end, the annular folding parts can be folded or unfolded in the extending direction of the hollow hole, and annular creases are formed at the joints of the adjacent annular folding parts; each annular crease is provided with an anti-deformation ring, and the anti-deformation ring is used for keeping the cross section profile of the airbag main body at the annular crease unchanged; wherein the cross-section is a plane perpendicular to the direction of extension of the hollow bore. The protective air bag plays a protective role by utilizing deformation energy absorption, and the safety is high.
Description
Technical Field
The invention relates to the technical field of protection, in particular to a telescopic hollow protective air bag and a support protection system.
Background
In the tunnel engineering field, because factors such as the geometric instability and the rock burst of surrounding rock, big deformation for the surrounding rock removes to the cavern, for example the piece of rock drops and the rock burst etc. and geological disasters such as the piece of rock drops and the rock burst can produce very big impact force to constructor and mechanical equipment, influences constructor's personal safety, shortens the life of equipment. In order to improve the influence that above geological disasters brought, in time set up the protection rack through excavating the back, strut the country rock under the protection of protection rack simultaneously. The rack also belongs to a mechanical structure with higher rigidity, and can generate great force when receiving impact so as to be damaged.
The inventor researches and discovers that the existing supporting and protecting structure in the tunnel has the following defects:
and a rigid structure is adopted for protection, so that the protection effect is poor and the safety is poor.
Disclosure of Invention
The invention aims to provide a telescopic hollow protective air bag and a support protection system, which can generate displacement to consume energy when being impacted, basically keep the internal pressure unchanged, realize passive energy consumption, are not easy to damage, have good protection effect and high safety.
The embodiment of the invention is realized by the following steps:
in a first aspect, the present invention provides a collapsible hollow protective air bag comprising:
the airbag comprises an airbag main body, a first support end and a second support end, wherein the airbag main body is provided with a cavity and a hollow hole, and the two ends of the airbag main body in the extending direction of the hollow hole are respectively the first support end and the second support end; the airbag main body is provided with a plurality of annular folding parts which are arranged in the extending direction of the hollow hole, the annular folding parts are positioned between the first supporting end and the second supporting end, the annular folding parts can be folded or unfolded in the extending direction of the hollow hole, and annular creases are formed at the joints of the adjacent annular folding parts; each annular crease is provided with an anti-deformation ring, and the anti-deformation ring is used for keeping the cross section profile of the airbag main body at the annular crease unchanged;
wherein the cross-section is a plane perpendicular to the direction of extension of the hollow bore.
In an alternative embodiment, the cross-sectional shape of the balloon body is circular.
In an optional embodiment, the air bag main body comprises an outer bag body, an inner bag body, a first annular sealing plate and a second annular sealing plate, the outer bag body is sleeved outside the inner bag body, an annular cavity is formed between the outer bag body and the inner bag body, and a hollow hole is surrounded by the inner bag body; the first annular sealing plate and the second annular sealing plate are simultaneously connected with the outer bag body and the inner bag body and respectively seal two ends of the annular cavity to form a cavity;
the outer bag body and the inner bag body are provided with a plurality of annular folding parts.
In an alternative embodiment, the first annular sealing plate is adhesively secured to the outer bladder and the inner bladder.
In an alternative embodiment, the second annular sealing plate is adhesively secured to the outer bladder and the inner bladder.
In an alternative embodiment, a pressure relief valve and a gas charging valve are provided on the first annular seal plate, both in communication with the chamber.
In an alternative embodiment, the number of the pressure relief valves is set to be a plurality, and the plurality of pressure relief valves are arranged at intervals.
In an alternative embodiment, the deformation-preventing collar is arranged outside the annular fold.
In an alternative embodiment, the deformation prevention ring is bonded or sewn to the airbag body.
In a second aspect, the present invention provides a support protection system, comprising:
the telescoping hollow protective balloon of any of the preceding embodiments.
The embodiment of the invention has the beneficial effects that:
in conclusion, the embodiment provides a telescopic hollow protective airbag, which comprises an airbag main body and a deformation prevention ring arranged on the airbag main body. The gasbag main part is provided with the cavity, and the gasbag main part is hollow structure promptly, can carry out laying of other parts such as stock in the cavity, can not produce with other supporting construction or tunnel construction equipment and interfere, and application scope is wide. The airbag main body is provided with a plurality of annular folding parts, when fluid (such as liquid or gas) is filled into the airbag main body, the pressure inside the airbag main body is increased, the annular folding parts are opened, the height of the airbag main body is increased, so that the first supporting end and the second supporting end of the airbag main body are respectively abutted against the tunnel wall and the reaction surface, and the airbag main body plays a role in supporting and protecting by means of the internal pressure to provide active supporting force. Simultaneously, be equipped with the shape circle of preapring for an unfavorable turn of events in the gasbag main part, the shape circle of preapring for an unfavorable turn of events is located annular crease department, and the shape circle of preapring for an unfavorable turn of events can make the cross section profile of annular crease department keep unchangeable, also can not inwards compress under the effect of internal pressure or external shock power gasbag main part, also can not outwards expand, but correspondingly stretch out and draw back on the extending direction of well casement under the guide of a plurality of annular folding portions, and structural stability is good, is difficult for being damaged, long service life, safe and reliable. When the airbag main body is impacted, the annular folding parts of the airbag main body are folded in a self-adaptive mode, the pressure in the airbag main body is kept constant in the deformation process, passive energy consumption is achieved, and the protection effect is good.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a telescopic hollow shielding airbag according to an embodiment of the present invention;
FIG. 2 is a schematic structural view from another perspective of a collapsible hollow shielding airbag in accordance with an embodiment of the present invention;
FIG. 3 is a schematic sectional view of a retractable hollow shielding airbag according to an embodiment of the present invention.
Icon:
100-a balloon body; 110-an outer balloon; 111-a first annular fold; 112-a first annular crease; 120-inner bladder; 121-a hollow bore; 122-a second annular fold; 123-a second annular crease; 130-a chamber; 140-a first annular seal plate; 150-a second annular seal plate; 200-a first anti-deformation ring; 300-a second anti-deformation ring; 400-pressure relief valve; 500-inflation valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
At present, the tunnel tunnelling in-process, the bearing structure of tunnel inner wall is diversified, and it is comparatively common that the structure of support cooperation steel sheet supports, also for the rigidity support, when receiving great impact force such as rockburst, bearing structure and rock block are the rigidity collision, and bearing structure is easy to be damaged, and barrier propterty is poor, and the security is low.
In view of this, the designer has designed a telescopic cavity protecting airbag, utilize protecting airbag to receive the impact deformation energy-absorbing and play the protective effect, the rock and stone piece and protecting airbag are elastic collision, and protecting airbag is telescopic structure, according to W ═ F · S, under the same circumstances of energy, the displacement is more powerful and is smaller, consequently, produce the displacement when protecting airbag receives the impact and realize the power consumption, reduce the impact force, make protecting airbag difficult to be damaged, protective performance is good, the security is high.
Referring to fig. 1-3, in the present embodiment, the telescopic hollow protective airbag includes an airbag main body 100, the airbag main body 100 is provided with a chamber 130 and a hollow hole 121 which are independent of each other, two ends of the airbag main body 100 in the extending direction of the hollow hole 121 are a first supporting end and a second supporting end, respectively, and the first supporting end and the second supporting end are supported on the ground and the tunnel wall, respectively; the airbag main body 100 is provided with a plurality of annular folded portions arranged in the extending direction of the hollow hole 121, the plurality of annular folded portions being located between the first support end and the second support end, the plurality of annular folded portions being foldable or unfoldable in the extending direction of the hollow hole 121, and an annular fold being formed at a connection of adjacent annular folded portions; each annular crease is provided with an anti-deformation ring, and the anti-deformation rings are used for keeping the cross section profile of the airbag main body 100 at the annular creases unchanged;
wherein the cross section is a plane perpendicular to the extending direction of the hollow hole 121.
In the telescopic hollow protective airbag provided by the embodiment, the airbag main body 100 is provided with the hollow hole 121, that is, the airbag main body 100 is of a hollow structure, and other components such as anchor rods and the like can be arranged in the hollow hole 121 or other construction operations can be performed without interfering with other supporting structures or tunnel construction equipment, so that the application range is wide. The airbag main body 100 is provided with a plurality of annular folded portions, when the airbag main body 100 is filled with fluid (for example, liquid or gas), the pressure inside the airbag main body 100 is increased, and the plurality of annular folded portions are unfolded, so that the height of the airbag main body 100 is increased, thereby respectively supporting the first supporting end and the second supporting end of the airbag main body 100 on a reaction surface such as the ground and a tunnel wall, and the airbag main body 100 plays a role of supporting and protecting by means of the internal pressure, and provides an active supporting force. Meanwhile, the deformation preventing ring is arranged on the air bag main body 100 and is arranged at the annular crease, the deformation preventing ring can keep the cross section outline of the annular crease unchanged, namely the air bag main body 100 cannot be compressed inwards under the action of internal pressure or external impact force, and cannot expand outwards, but correspondingly stretch out and draw back in the extending direction of the hollow hole 121 under the guide of a plurality of annular folding parts, so that the phenomena of toppling and the like due to unbalanced or sudden change of internal pressure are not easy to occur, the structural stability is good, the damage is not easy to occur, the service life is long, and the safety and the reliability are realized. When the airbag main body 100 is impacted, the annular folding parts of the airbag main body 100 are folded in a self-adaptive manner, the impact force is reduced by displacement, the pressure in the airbag main body is kept constant in the deformation process, passive energy consumption is realized, and the protection effect is good.
Referring to fig. 3, in the present embodiment, the cross-sectional shape of the airbag main body 100 is optionally circular. Specifically, the airbag main body 100 includes an outer airbag body 110, an inner airbag body 120, a first annular sealing plate 140 and a second annular sealing plate 150, the outer airbag body 110 is sleeved outside the inner airbag body 120, the outer airbag body 110 and the inner airbag body 120 are coaxially disposed, and an inner peripheral wall of the outer airbag body 110 and an outer peripheral wall of the inner airbag body 120 jointly define an annular cavity with openings at two ends. First and second annular sealing plates 140 and 150 are located at opposite ends of the annular cavity, the first annular sealing plate 140 being in sealing connection with both the outer bladder 110 and the inner bladder 120, and the second annular sealing plate 150 being in sealing connection with both the outer bladder 110 and the inner bladder 120, such that the outer bladder 110, the inner bladder 120, the first annular sealing plate 140 and the second annular sealing plate 150 together define a chamber 130 for storing fluid.
It should be appreciated that the first and second annular seal plates 140, 150 form first and second support ends, respectively.
Optionally, the outer bladder body 110 is made of a rubber material, and the outer bladder body 110 has a certain elastic deformation capability, which is weaker, and mainly depends on folding to realize volume change. The cross-sectional profile of outer bladder 110 is circular. The outer bag body 110 is provided with a plurality of first annular folding portions 111, the plurality of first annular folding portions 111 are sequentially arranged on the axis of the outer bag body 110, and the outer bag body 110 can be folded on the axis to adjust the volume. Each first annular folding portion 111 is in a conical structure, a first annular crease 112 is formed at the joint of adjacent first annular folding portions 111, and the first annular crease 112 is in a circular structure. Since the outer bladder 110 is located outside the inner bladder 120, the outer bladder 110 has a high probability of contacting rocks or other structures, and thus, in order to improve the impact resistance and wear resistance of the outer bladder 110, a wear-resistant layer may be coated outside the outer bladder 110.
Further, each first annular crease 112 is provided with a first deformation prevention ring 200, the first deformation prevention ring 200 may be a metal circular ring, and the first deformation prevention ring 200 is located inside the outer bag body 110 and may be fixed to the outer bag body 110 by bonding or sewing. Because first shape circle 200 of preapring for an unfavorable turn of events is provided with in outer utricule 110's first annular crease 112 department, first shape circle 200 of preapring for an unfavorable turn of events is the rigidity piece, difficult emergence deformation, inflate the pressurization back in gasbag main part 100 is inside, the outer utricule 110 that is located first shape circle 200 department of preapring for an unfavorable turn of events department can not outside inflation under the pressure effect to make outer utricule 110 remain the structural configuration who has a plurality of first annular folding portions 111 under the pressure all the time, also remain the structural configuration who has the function foldingly all the time, in order to adapt to strut and protecting against shock scene.
Optionally, the inner bag body 120 is made of a rubber material, and the inner bag body 120 has a certain elastic deformation capability, which is weaker, and mainly depends on folding to realize volume change. The cross-sectional profile of the inner bladder 120 is circular. The inner balloon 120 is provided with a plurality of second annular folds 122, and the plurality of second annular folds 122 are sequentially arranged on the axis of the inner balloon 120, so that the inner balloon 120 can be folded on the axis thereof to adjust the volume. Each second annular folding portion 122 is in a conical structure, a second annular fold 123 is formed at the joint of adjacent second annular folding portions 122, and the second annular fold 123 is in a circular structure. After the outer bag body 110 and the inner bag body 120 are sleeved, the plurality of first annular creases 112 and the plurality of second annular creases 123 correspond to each other one by one, and the corresponding first annular creases 112 and the corresponding second annular creases 123 are located in the same plane perpendicular to the axis of the inner bag body 120, that is, the corresponding first annular creases 112 and the corresponding second annular creases 123 are concentrically arranged. The folding synchronicity of the inner bag body 120 and the outer bag body 110 is high, the differentiation is small, and the airbag main body 100 is easy to fold, thereby improving the protection effect.
Further, every second annular crease 123 department all is provided with the second and prevents the shape circle 300, and the second is prevented the shape circle 300 and can be set up to the metal ring, and the second is prevented the shape circle 300 and is located interior utricule 120 inboard, can adopt modes such as bonding or sewing connection with interior utricule 120 and fix. Because the second ring-shaped crease 123 department of interior utricule 120 is provided with the second and prevents the shape circle 300, the second is prevented the shape circle 300 for the rigidity piece, difficult emergence deformation, after the inside inflation pressurization of gasbag main part 100, the interior utricule 120 that is located the second and prevents the shape circle 300 department under the pressure effect can not inwards shrink, also be that interior utricule 120 is difficult to be squashed, thereby make interior utricule 120 remain the structural configuration who has a plurality of second annular folding portions 122 under internal pressure all the time, also keep the structural configuration who has the function of collapsible ground all the time, in order to adapt to and strut and protecting against shock the scene.
It should be understood that the inner bladder 120 encloses a hollow bore 121, and the hollow bore 121, the inner bladder 120 and the outer bladder 110 are coaxially disposed.
Optionally, the first annular sealing plate 140 is a circular annular plate, a first circular hole communicated with the hollow hole 121 is formed in the middle of the first annular sealing plate 140, and the first annular sealing plate 140 and the hollow hole 121 are coaxially arranged.
Optionally, the second annular sealing plate 150 is a circular annular plate, a second circular hole communicated with the hollow hole 121 is formed in the middle of the second annular sealing plate 150, and the second annular sealing plate 150 and the hollow hole 121 are coaxially arranged.
It should be noted that the first annular sealing plate 140 and the second annular sealing plate 150 may be configured in the same structure, the outer diameters of the first annular sealing plate 140 and the second annular sealing plate 150 are not smaller than the diameter of the outer capsule 110, and the inner diameter of the first annular sealing plate 140 is not larger than the diameter of the hollow hole 121, so that the normal use of the hollow hole 121 is not affected while the region between the outer capsule 110 and the inner capsule 120 is sealed.
In addition, the first annular sealing plate 140 may be fixed to the outer capsule 110 and the inner capsule 120 by bonding. The second annular seal plate 150 may be adhesively secured to the outer bladder 110 and the inner bladder 120.
Referring to fig. 1, in the present embodiment, optionally, a pressure relief valve 400 and an inflation valve 500, both of which are communicated with the chamber 130, are disposed on the first annular sealing plate 140, the pressure relief valve 400 is provided with a threshold, and when the pressure in the chamber 130 is greater than the threshold of the pressure relief valve 400, the fluid inside the airbag main body 100 is discharged through the pressure relief valve 400, so as to reduce the internal pressure and prevent the airbag main body 100 from being damaged due to an excessive pressure.
In addition, can be at the inside pressure sensor that sets up of gasbag main part 100, relief valve 400 and pressure sensor all with controller communication connection, pressure sensor is used for detecting gasbag main part 100 internal pressure, and transmits pressure information to the controller, and when pressure information was greater than the threshold value that sets up in the controller, controller control relief valve 400 opened, realizes losing air the step-down.
And when the internal pressure of the airbag main body 100 is less than the threshold value, the airbag main body 100 is inflated by the inflator using the inflation valve 500.
It should be understood that, in order to achieve pressure relief in a short time, a plurality of pressure relief valves 400 are provided on the first annular sealing plate 140, the plurality of pressure relief valves 400 are independently operated and spaced apart on the first annular sealing plate 140, and the plurality of pressure relief valves 400 may be operated simultaneously. And because a plurality of relief valves 400 set up independently, the operating condition of every relief valve 400 can be independently controlled, mutual noninterference, and fault-tolerant rate is high, and the security is high.
The telescopic cavity protective airbag that this embodiment provided, strut and the protecting against shock through the displacement, strut effectually, the protecting against shock is effectual, uses safe and reliable.
The embodiment also provides a support protection system, including the telescopic cavity protective air bag that above-mentioned embodiment mentioned, support protection system and not only have good supporting effect, and can keep the relatively stable of structure when receiving the impact of rock piece, difficult quilt damages, and the rockburst protective effect is good, and the security is high.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A collapsible hollow protective airbag comprising:
the airbag comprises an airbag main body (100), wherein the airbag main body (100) is provided with a cavity (130) and a hollow hole (121), and two ends of the airbag main body (100) in the extending direction of the hollow hole (121) are respectively a first supporting end and a second supporting end; the airbag main body (100) is provided with a plurality of annular folded parts arranged in the extending direction of the hollow hole (121), the annular folded parts are positioned between the first supporting end and the second supporting end, the annular folded parts can be folded or unfolded in the extending direction of the hollow hole (121), and annular creases are formed at the joints of the adjacent annular folded parts; each annular crease is provided with a deformation-preventing ring, and the deformation-preventing rings are used for keeping the cross-sectional profile of the airbag main body (100) at the annular creases unchanged;
wherein the cross-section is a plane perpendicular to the direction of extension of the hollow bore (121).
2. The telescopic hollow protective airbag according to claim 1, characterized in that:
the cross-sectional shape of the airbag body (100) is annular.
3. The telescopic hollow protective airbag according to claim 1, characterized in that:
the airbag main body (100) comprises an outer airbag body (110), an inner airbag body (120), a first annular sealing plate (140) and a second annular sealing plate (150), the outer airbag body (110) is sleeved outside the inner airbag body (120), an annular cavity is formed between the outer airbag body (110) and the inner airbag body (120), and the hollow hole (121) is surrounded by the inner airbag body (120); said first and second annular sealing plates (140, 150) are both connected to said outer bladder (110) and said inner bladder (120) simultaneously and seal the two ends of said annular cavity to form said chamber (130), respectively;
the outer balloon (110) and the inner balloon (120) are each provided with a plurality of said annular folds.
4. The telescopic hollow protective airbag according to claim 3, characterized in that:
the first annular sealing plate (140) is adhesively secured to the outer bladder (110) and the inner bladder (120).
5. The telescopic hollow protective airbag according to claim 3, characterized in that:
the second annular sealing plate (150) is adhesively secured to the outer bladder (110) and the inner bladder (120).
6. The telescopic hollow protective airbag according to claim 3, characterized in that:
the first annular sealing plate (140) is provided with a pressure release valve (400) and an inflation valve (500) which are communicated with the cavity (130), and the inflation valve (500) and the pressure release valve (400) are controlled by a servo system to ensure that the pressure of the airbag main body (100) is kept constant.
7. The telescopic hollow protective airbag according to claim 6, characterized in that:
the number of the pressure relief valves (400) is set to be a plurality, and the pressure relief valves (400) are arranged at intervals.
8. The telescopic hollow protective airbag according to claim 1, characterized in that:
the deformation-preventing ring is sleeved outside the annular crease.
9. The telescopic hollow protective airbag of claim 8, wherein:
the deformation preventing ring is bonded or sewn with the airbag main body (100).
10. A timbering protection system, the timbering protection system comprising:
the telescoping hollow protective balloon of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110794308.8A CN113339001A (en) | 2021-07-14 | 2021-07-14 | Telescopic hollow protective air bag and support protective system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110794308.8A CN113339001A (en) | 2021-07-14 | 2021-07-14 | Telescopic hollow protective air bag and support protective system |
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| CN113339001A true CN113339001A (en) | 2021-09-03 |
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| CN202110794308.8A Pending CN113339001A (en) | 2021-07-14 | 2021-07-14 | Telescopic hollow protective air bag and support protective system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982631A (en) * | 2021-10-29 | 2022-01-28 | 成都未来智隧科技有限公司 | Tunnel supporting structure and tunnel supporting method |
| CN115012365A (en) * | 2022-04-29 | 2022-09-06 | 武汉圣禹排水系统有限公司 | Utricule, utricule subassembly, plugging device and weir under new power |
| WO2024040853A1 (en) * | 2022-08-25 | 2024-02-29 | 浙大城市学院 | Inflatable folding reinforcement structure for tunnel and construction method therefor |
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