CN209742840U - Rubber air bag for sealing face grouting hole - Google Patents
Rubber air bag for sealing face grouting hole Download PDFInfo
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- CN209742840U CN209742840U CN201920498190.2U CN201920498190U CN209742840U CN 209742840 U CN209742840 U CN 209742840U CN 201920498190 U CN201920498190 U CN 201920498190U CN 209742840 U CN209742840 U CN 209742840U
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- rubber air
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Abstract
The utility model provides a rubber air bag for plugging a grouting hole on a face, which is used for solving the problem that the gap between an anchor rod and a drill hole can cause the outflow of the grouted slurry to influence the reinforcing effect, and comprises a rubber air bag which is arranged around the outer wall of the anchor rod inserted into the grouting hole on the face and is of an annular structure, wherein an inflating valve is arranged on the rubber air bag, and the air inlet end of the inflating valve is connected with an air pump through a pipeline; the inflating valve comprises an inflating valve shell communicated with the rubber air bag, a spring fixing plate and a sealing structure are sequentially arranged in the inflating valve shell from top to bottom, a valve needle is arranged on the spring fixing plate and the sealing structure in a sliding and penetrating mode, a spring return structure is arranged in the middle of the valve needle, and a bottom end cap of the valve needle is arranged at the bottom end of the valve needle. The utility model discloses mainly utilize high strength inflatable rubber air bag as plugging device, satisfy gap slip casting space confined demand between stock and drilling to make the thick liquids of pouring can not flow, guaranteed the reinforcement effect of face.
Description
Technical Field
the utility model belongs to the technical field of the underground tunnel engineering technique and specifically relates to a rubber air bag is used in jam of face slip casting hole.
background
with the high-speed development of highway and railway industry in China, more and more tunnels face the difficult problem of large-section shallow-buried construction of weak surrounding rock sections, and accidents such as tunnel collapse, roof collapse and the like frequently occur in the construction process of the tunnels, so that great trouble is brought to tunnel construction.
Three methods commonly used in underground construction are open (covered) excavation, shallow buried and underground excavation and shield construction. In the construction process of the shallow excavation method, the characteristics of construction excavation and the characteristics of the deformation rule of the stratum surrounding rock are known, so that the stability of the tunnel face is ensured, and the construction safety is very important. In this case, it is necessary to secure the stability of the tunnel face by an auxiliary construction method, and it is a common method to reinforce the tunnel rock body in advance before excavation to prevent disasters such as excessive deformation and collapse of the surrounding rock.
The pre-reinforcing construction method can improve the physical property parameters of the surrounding rock, enhance the anti-interference capability of the weak surrounding rock, improve the stability of the tunnel face and ensure the smooth excavation of the tunnel, and in the actual engineering, the pre-reinforcing technologies such as a pipe shed, a small pipe, grouting and the like are widely applied to the weak and bad surrounding rock and the geological condition with poor geological conditions.
The anchor rods made of different materials are matched with a grouting means to be a common means (as shown in fig. 4) for reinforcing the tunnel face, after the hole is formed by a drilling machine, a gap with a certain size exists between the anchor rods and the drilled hole, and when the anchor rods with different diameters are adopted, the size of the gap is the same, and the gap between the anchor rods and the drilled hole can cause the outflow of the grouted slurry to influence the reinforcing effect.
SUMMERY OF THE UTILITY MODEL
The utility model provides a rubber air bag is used in face slip casting hole shutoff to solve between stock and the drilling the slurry outflow that the gap can lead to pouring and influence the problem of consolidating the effect, in order to reach and carry out effective shutoff to the gap between stock and the drilling, be applicable to the purpose in different clearances, improve the reinforcement effect of face.
The technical scheme of the utility model is realized like this:
The rubber air bag for plugging the grouting hole on the face comprises a rubber air bag which is coated and arranged on the periphery of the outer wall of an anchor rod inserted into the grouting hole on the face and is used for plugging a gap between the anchor rod and the grouting hole, the rubber air bag is of an annular structure, an air valve used for opening an air passage under manual action is arranged on the rubber air bag, and the air inlet end of the air valve is connected with an air pump used for providing an air source for the rubber air bag through a pipeline; the inflating valve comprises an inflating valve shell communicated with a rubber air bag, a spring fixing plate fixedly arranged on the inner wall of the inflating valve shell and a sealing structure used for plugging the bottom of the spring fixing plate are sequentially arranged in the inflating valve shell from top to bottom, a valve needle is arranged on the spring fixing plate and the sealing structure in a sliding and penetrating mode, a spring return structure arranged between the valve needle and the sealing structure is arranged in the middle of the valve needle, and a bottom end cap used for pressing the valve needle to open a sealing structure air path is arranged at the bottom end of the valve needle.
According to the technical scheme, the spring fixing plate through hole for the valve needle to penetrate through is formed in the middle of the top end of the spring fixing plate in a penetrating mode, and the valve needle and the spring fixing plate through hole are in clearance fit.
Further optimize technical scheme, seal structure includes that the fixed lower sealing ring that sets up on the inflating valve shell inner wall that is located spring fixed plate below, closely join in marriage the dress with lower sealing ring upper sealing ring and fix and set up between upper sealing ring top and spring fixed plate bottom and overlap and establish the big spring that is used for producing the extrusion to upper sealing ring in order to realize that upper sealing ring and lower sealing ring closely join in marriage the dress on the needle.
According to the technical scheme, the upper sealing ring is provided with an upper sealing ring through hole for the valve needle to penetrate through, the valve needle is in clearance fit with the upper sealing ring through hole, and the middle part of the upper sealing ring is provided with a cylindrical cavity communicated with the upper sealing ring through hole.
Further optimize technical scheme, the spring return structure is including setting up in being located the upper seal ring top, the shape is the needle middle part end cap of column shape, and the diameter of needle middle part end cap is greater than the upper seal ring through-hole, and the bottom inner wall of cylindricality cavity and the bottom of needle middle part end cap are provided with the little spring of cover establishing on the needle.
According to the technical scheme, the valve needle bottom plug comprises a first cylinder and a second cylinder, the diameter of the first cylinder is larger than that of the through hole of the upper sealing ring, and the second cylinder is arranged at the bottom of the first cylinder.
According to the technical scheme, the length of the valve needle between the plug at the middle part of the valve needle and the plug at the bottom of the valve needle is larger than the vertical length of the through hole of the upper sealing ring.
Further optimize technical scheme, the top of needle is provided with the needle cap that the staff of being convenient for pressed the needle.
By adopting the technical scheme, the beneficial effects of the utility model are that:
The utility model discloses novel structure, compact structure, practicality are strong, the utility model discloses the principle mainly is that utilize high strength inflatable rubber air bag as plugging device, satisfies gap slip casting space confined demand between stock and drilling to make the thick liquids of pouring can not flow, guaranteed the reinforcement effect of face. The rubber air bag for plugging the grouting hole on the face surface of the utility model can rapidly plug the gap between the anchor rod and the soil body surface by inflating the rubber air bag, meet different gap plugging by adjusting the expansion degree of the rubber air bag, and has very accurate positioning; the rubber air bag has the characteristics of being detachable, small in size and small in dead weight, so that the rubber air bag is convenient to install and transport, the inflatable rubber device can be used repeatedly, the rubber air bag has high economic practicability, the difficulty of inflating the rubber air bag is small, the operation is simple and convenient, and the construction efficiency can be improved.
The utility model discloses a space between with inflatable rubber air bag shutoff stock and the drilling produces the air through the air pump, makes rubber air bag inflation inseparable with stock and soil body laminating to reach the purpose in shutoff gap. The air enters the rubber air bag through the valve, the valve needle is arranged in the valve, the valve needle moves downwards, air is pumped into the valve, the valve needle moves upwards after the air inflation is completed, the air in the rubber air bag cannot flow back, and therefore the air bag is pressurized, and the air bag achieves the purpose of blocking gaps.
The utility model discloses offer on the last vertical through-hole that is used for joining in marriage the dress with lower sealing ring bottom, lower sealing ring inserts in the vertical through-hole, realizes the cooperation with last sealing ring. Meanwhile, the upper sealing ring is further provided with a tapered hole communicated with the vertical through hole, and the lower sealing ring is provided with a tapered part matched with the tapered hole, so that the sealing effect is further improved.
the utility model discloses the needle length that is located between needle middle part end cap and the needle bottom end cap is greater than the vertical length of last sealing ring through-hole, consequently makes when pressing down the needle, when the top of needle middle part end cap and last sealing ring contacted, needle bottom end cap no longer carries out the shutoff to lower sealing ring for the gas circuit that the inflating valve let in the rubber air bag is opened, and the setting up of needle middle part end cap has played the limiting displacement who presses down the hand to a certain extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of the present invention;
Fig. 2 is a side view of the present invention;
FIG. 3 is a schematic structural view of the inflating valve of the present invention;
Fig. 4 is a schematic structural diagram of an application position of the present invention.
Wherein: 1-grouting hole, 2-palm surface, 4-rubber air bag, 5-inflating valve, 5-1 valve needle cap, 5-2 valve needle, 5-3 spring fixing plate, 5-4 large spring, 5-5 inflating valve shell, 5-6 valve needle middle plug, 5-7 upper sealing ring, 5-8 small spring, 5-9 lower sealing ring, 5-10 valve needle bottom plug and 6-anchor rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A rubber air bag for plugging a grouting hole on a tunnel face is shown in a combined drawing 1-4 and comprises a rubber air bag 4, wherein the rubber air bag 4 is arranged around the outer wall of an anchor rod 6 inserted into the grouting hole 1 on the tunnel face in a coating mode, and soil bodies and the anchor rod 6 are respectively arranged on two sides of the rubber air bag 4 and used for plugging a gap between the anchor rod 6 and the grouting hole 1. Rubber gasbag 4 is the annular column structure, is provided with inflating valve 5 on the rubber gasbag 4, and inflating valve 5 is used for making the gas circuit open under the artificial action, and inflating valve 5's inlet end is used for providing the air pump of air supply for rubber gasbag 4 through the tube coupling.
The valve 5 comprises a valve shell 5-5, a spring fixing plate 5-3, a sealing structure, a valve needle 5-2, a spring return structure and a valve needle bottom plug 5-10. The inflating valve shell 5-5 is communicated with the rubber air bag 4, a spring fixing plate 5-3 and a sealing structure are sequentially arranged in the inflating valve shell 5-5 from top to bottom, the spring fixing plate 5-3 is fixedly arranged on the inner wall of the inflating valve shell 5-5, and the sealing structure is used for plugging the bottom of the spring fixing plate 5-3.
The valve needle 5-2 is slidably arranged on the spring fixing plate 5-3 and the sealing structure in a penetrating mode, a spring return structure arranged between the valve needle 5-2 and the sealing structure is arranged in the middle of the valve needle 5-2, a valve needle bottom plug 5-10 is arranged at the bottom end of the valve needle 5-2, and the valve needle bottom plug 5-10 is used for opening an air path of the sealing structure when the valve needle 5-2 is pressed down.
The middle part of the top end of the spring fixing plate 5-3 is provided with a spring fixing plate through hole for the valve needle 5-2 to pass through, and the valve needle 5-2 is in clearance fit with the spring fixing plate through hole.
The sealing structure comprises a lower sealing ring 5-9 fixedly arranged on the inner wall of the inflating valve shell 5-5 positioned below the spring fixing plate 5-3, an upper sealing ring 5-7 tightly assembled with the lower sealing ring 5-9 and a large spring 5-4 fixedly arranged between the top of the upper sealing ring 5-7 and the bottom of the spring fixing plate 5-3, the valve needle 5-2 is sleeved with the sealing structure and used for extruding the upper sealing ring 5-7 to realize the tight assembly of the upper sealing ring 5-7 and the lower sealing ring 5-9, and the upper sealing ring 5-7 is automatically pressed under the action of the large spring 5-4 to be sealed with the lower sealing ring 5-9.
The utility model discloses set up on the upper seal ring 5-7 and be used for joining in marriage the vertical through-hole that joins in marriage the dress with lower seal ring 5-9 bottom, lower seal ring 5-9 inserts in the vertical through-hole, realizes the cooperation with upper seal ring 5-7. Meanwhile, the upper sealing ring 5-7 is also provided with a tapered hole communicated with the vertical through hole, and the lower sealing ring 5-9 is provided with a tapered part matched with the tapered hole, so that the sealing effect is further improved.
an upper sealing ring through hole for the valve needle 5-2 to pass through is formed in the upper sealing ring 5-7, the valve needle 5-2 is in clearance fit with the upper sealing ring through hole, and a cylindrical cavity communicated with the upper sealing ring through hole is formed in the middle of the upper sealing ring 5-7.
The spring return structure comprises a valve needle middle plug 5-6 and a small spring 5-8, the valve needle middle plug 5-6 is arranged above the upper sealing ring 5-7 and is cylindrical, and the diameter of the valve needle middle plug 5-6 is larger than that of the upper sealing ring through hole. The small spring 5-8 is arranged on the inner wall of the bottom end of the cylindrical cavity and the bottom end of the valve needle middle plug 5-6 and is sleeved on the valve needle 5-2.
The valve needle bottom plug 5-10 comprises a first cylinder body with the diameter larger than that of the through hole of the upper sealing ring and a second cylinder body arranged at the bottom of the first cylinder body.
The length of the valve needle 5-2 between the valve needle middle plug 5-6 and the valve needle bottom plug 5-10 is larger than the vertical length of the upper sealing ring through hole, so that when the valve needle 5-2 is pressed, when the valve needle middle plug 5-6 is contacted with the top end of the upper sealing ring 5-7, the valve needle bottom plug 5-10 does not block the lower sealing ring 5-9 any more, the air path from the valve nozzle 2 into the rubber air bag 4 is opened, and the valve needle middle plug 5-6 is arranged to play a role in limiting the pressing of a human hand to a certain extent.
In order to facilitate the manual pressing of the valve needle 5-2, so that the valve needle 5-2 can be pressed to open and make the gas enter the rubber air bag 4, the utility model discloses the valve needle cap 5-1 that is provided with on the top of valve needle 5-2, valve needle cap 5-1 is the cylindricality structure, and the diameter of valve needle cap 5-1 is greater than the internal diameter of spring fixed plate through-hole.
The utility model discloses an actually aerify the process and do: the valve needle 5-2 is pressed down, the valve needle bottom plug 5-10 integrally arranged with the valve needle 5-2 moves downwards, the valve needle bottom plug 5-10 is separated from the bottom of the upper sealing ring 5-7, so that the through hole of the spring fixing plate and the through hole of the upper sealing ring are communicated with the bottom of the valve cock 5, and air pumped by the air pump enters the rubber air bag 4 through a gap between the upper sealing ring 5-7 and the valve needle 5-2 to inflate the rubber air bag 4.
when the air bag is inflated, air in the rubber air bag 4 extrudes the bottom plug 5-10 of the valve needle to a certain degree, when the sum of the air pressure in the rubber air bag and the elasticity of the small spring 5-8 is greater than the inflation pressure, the valve needle 5-2 moves upwards under the action of the small spring 5-8, and the bottom plug 5-10 of the valve needle is tightly attached to the bottom of the upper sealing ring 5-7 again, so that the automatic sealing of the air is realized, and the inflation is completed. The air in the rubber air bag 4 can not flow back, so that the rubber air bag 4 is pressurized, and the purpose of plugging the gap by the rubber air bag 4 is achieved.
Adopt the utility model discloses when aerifing airtight, slip casting, can adopt following step to go on:
Firstly, placing a grouting hole to plug the rubber air bag. The rubber air bag 4 is sleeved outside the anchor rod 6 and is placed in the grouting hole 1 punched on the tunnel face 2.
And secondly, inflating and grouting, wherein the air pump can generate air with pressure, and when the valve needle cap 5-1 is pressed down, the air enters the rubber air bag 4 through the valve needle 5-2 and a gap inside the upper sealing ring 5-7. After the inflation is finished, the valve needle 5-2 rebounds under the action of the air pressure in the rubber air bag 4 and the small spring 5-8, the air inlet of the rubber air bag is automatically closed, and the pressure in the rubber air bag keeps a certain constant value. And then grouting into the grouting hole through grouting equipment.
And thirdly, deflating. The air pump does not supply air to the air valve 5 any more, the valve needle 5-2 is pressed down, the air inlet of the rubber air bag is opened, the air is discharged, and the device can be taken out. When grouting is needed again, the rubber air bag can be reused, and the operation is repeated when the rubber air bag is used.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The tunnel face slip casting hole is rubber gasbag for the shutoff, its characterized in that: the air pump comprises a rubber air bag (4) which is coated and arranged on the periphery of the outer wall of an anchor rod (6) inserted into a grouting hole (1) on a tunnel face and used for sealing a gap between the anchor rod (6) and the grouting hole (1), wherein the rubber air bag (4) is of an annular structure, an air valve (5) used for opening an air passage under manual action is arranged on the rubber air bag (4), and the air inlet end of the air valve (5) is connected with an air pump used for providing an air source for the rubber air bag (4) through a pipeline; the inflating valve (5) comprises an inflating valve shell (5-5) communicated with the rubber air bag (4), a spring fixing plate (5-3) fixedly arranged on the inner wall of the inflating valve shell (5-5) and a sealing structure used for plugging the bottom of the spring fixing plate (5-3) are sequentially arranged in the inflating valve shell (5-5) from top to bottom, a valve needle (5-2) penetrates through the spring fixing plate (5-3) and the sealing structure in a sliding mode, a spring return structure arranged between the valve needle (5-2) and the sealing structure is arranged in the middle of the valve needle (5-2), and a valve needle bottom plug (5-10) used for opening a sealing structure air path by pressing down the valve needle (5-2) is arranged at the bottom end of the valve needle (5-2).
2. The rubber air bag for plugging a tunnel face grouting hole according to claim 1, characterized in that: the middle of the top end of the spring fixing plate (5-3) is provided with a spring fixing plate through hole for the valve needle (5-2) to pass through, and the valve needle (5-2) is in clearance fit with the spring fixing plate through hole.
3. The rubber air bag for plugging a tunnel face grouting hole according to claim 1, characterized in that: the sealing structure comprises a lower sealing ring (5-9) fixedly arranged on the inner wall of the inflating valve shell (5-5) positioned below the spring fixing plate (5-3), an upper sealing ring (5-7) tightly assembled with the lower sealing ring (5-9), and a large spring (5-4) fixedly arranged between the top of the upper sealing ring (5-7) and the bottom of the spring fixing plate (5-3) and sleeved on the valve needle (5-2) and used for extruding the upper sealing ring (5-7) to realize the tight assembly of the upper sealing ring (5-7) and the lower sealing ring (5-9).
4. The rubber air bag for plugging a tunnel face grouting hole according to claim 3, characterized in that: an upper sealing ring through hole for the valve needle (5-2) to pass through is formed in the upper sealing ring (5-7), the valve needle (5-2) is in clearance fit with the upper sealing ring through hole, and a cylindrical cavity communicated with the upper sealing ring through hole is formed in the middle of the upper sealing ring (5-7).
5. The rubber air bag for plugging a tunnel face grouting hole according to claim 4, characterized in that: the spring return structure comprises a valve needle middle plug (5-6) which is arranged above the upper sealing ring (5-7) and is in a cylindrical shape, the diameter of the valve needle middle plug (5-6) is larger than that of the upper sealing ring through hole, and a small spring (5-8) which is sleeved on the valve needle (5-2) is arranged on the inner wall of the bottom end of the cylindrical cavity and the bottom end of the valve needle middle plug (5-6).
6. The rubber air bag for plugging a tunnel face grouting hole according to claim 5, characterized in that: the valve needle bottom plug (5-10) comprises a first cylinder body with the diameter larger than that of the through hole of the upper sealing ring and a second cylinder body arranged at the bottom of the first cylinder body.
7. The rubber air bag for plugging a tunnel face grouting hole according to claim 4, characterized in that: the length of the valve needle (5-2) between the plug (5-6) at the middle part of the valve needle and the plug (5-10) at the bottom part of the valve needle is larger than the vertical length of the through hole of the upper sealing ring.
8. The rubber air bag for plugging a tunnel face grouting hole according to claim 1, characterized in that: the top end of the valve needle (5-2) is provided with a valve needle cap (5-1) which is convenient for a human hand to press the valve needle (5-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920498190.2U CN209742840U (en) | 2019-04-14 | 2019-04-14 | Rubber air bag for sealing face grouting hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920498190.2U CN209742840U (en) | 2019-04-14 | 2019-04-14 | Rubber air bag for sealing face grouting hole |
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| Publication Number | Publication Date |
|---|---|
| CN209742840U true CN209742840U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920498190.2U Active CN209742840U (en) | 2019-04-14 | 2019-04-14 | Rubber air bag for sealing face grouting hole |
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| CN (1) | CN209742840U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111472810A (en) * | 2020-04-15 | 2020-07-31 | 高军 | High-pressure grouting device and method based on weak broken surrounding rock |
| CN112647380A (en) * | 2020-12-23 | 2021-04-13 | 江苏精享裕建工有限公司 | Roadbed concrete repairing grouting reinforcement method and reinforcement sealing device thereof |
| CN113208236A (en) * | 2021-04-07 | 2021-08-06 | 瑞安市大虎鞋业有限公司 | Aerogel cold-proof boot production process and equipment |
-
2019
- 2019-04-14 CN CN201920498190.2U patent/CN209742840U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111472810A (en) * | 2020-04-15 | 2020-07-31 | 高军 | High-pressure grouting device and method based on weak broken surrounding rock |
| CN111472810B (en) * | 2020-04-15 | 2021-07-06 | 高军 | High-pressure grouting device and method based on weak broken surrounding rock |
| CN112647380A (en) * | 2020-12-23 | 2021-04-13 | 江苏精享裕建工有限公司 | Roadbed concrete repairing grouting reinforcement method and reinforcement sealing device thereof |
| CN113208236A (en) * | 2021-04-07 | 2021-08-06 | 瑞安市大虎鞋业有限公司 | Aerogel cold-proof boot production process and equipment |
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