CN115387614B - Telescopic pneumatic vibrator, vibrating device and use method of vibrating device - Google Patents
Telescopic pneumatic vibrator, vibrating device and use method of vibrating device Download PDFInfo
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- CN115387614B CN115387614B CN202211066347.7A CN202211066347A CN115387614B CN 115387614 B CN115387614 B CN 115387614B CN 202211066347 A CN202211066347 A CN 202211066347A CN 115387614 B CN115387614 B CN 115387614B
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- air
- pneumatic vibrator
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- telescopic pneumatic
- gas
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/063—Solidifying concrete, e.g. by application of vacuum before hardening making use of vibrating or jolting tools
Abstract
The invention discloses a telescopic pneumatic vibrator, a vibrating device and a using method thereof. The telescopic pneumatic vibrator comprises a spiral spring, end plates and a hollow tube, wherein the end plates and the hollow tube are arranged at two ends of the spiral spring; the annular fold type air film is sleeved on the spiral spring, two ends of the annular fold type air film are connected to the end plate and the hollow tube, and air film holes are well distributed in a surrounding mode. The invention can improve the grouting quality of the concrete prefabricated part.
Description
Technical Field
The invention relates to the field of concrete vibration, in particular to a telescopic pneumatic vibrator, a vibrating device and a using method thereof.
Background
And (3) grouting the concrete prefabricated part through a narrow grouting hole. At present, a device and a method for assisting in removing air in a pore canal and vibrating slurry in the pore canal are not available in a narrow pouring pore canal, and once the non-compaction and incomplete grouting occurs in the pore canal, the construction quality of a concrete prefabricated part is difficult to ensure. Therefore, how to discharge the air in the pouring channel and improve the grouting quality of the concrete prefabricated part is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a telescopic pneumatic vibrator, a vibrating device and a using method thereof, so as to solve the problem of poor grouting quality of a concrete prefabricated part.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a telescopic pneumatic vibrator comprising:
the spiral spring is linear;
an end plate provided at one end of the coil spring;
the hollow tube is arranged at the other end of the spiral spring;
the annular fold type air film is sleeved on the spiral spring, two ends of the annular fold type air film are connected to the end plate and the hollow tube, and air film holes are distributed around the annular fold type air film.
Further, the telescopic pneumatic vibrator provided by the invention has the advantage that the circumferential fold type air film is a corrugated pipe.
In order to solve the technical problems, the invention provides another technical scheme as follows: the utility model provides a vibrating device, includes the aspiration pump and is in through the pipeline intercommunication the flexible pneumatic vibrator above on the aspiration pump, be provided with gaseous automatic reflux balance valve on the aspiration pump, be provided with the exhaust hole on the aspiration pump.
Further, the automatic gas reflux balance valve comprises a shell, wherein an upper air hole, a lower air hole and a side air hole are formed in the shell, a spring piece capable of being bent bidirectionally relative to a horizontal plane is arranged on the side wall of the shell above the side air hole, a convex sealing piece which is sealed with or separated from the upper air hole is arranged above the spring piece, a compression spring is arranged between the lower part of the spring piece and the bottom surface of the shell, and a gas barrier is arranged on the bottom surface of the shell between the lower air hole and the side air hole in a surrounding and sealing mode;
setting the external air pressure outside the air pump as P0, the internal air pressure inside the air pump as P1, the elastic force of the compression spring as F1, the elastic force of the spring piece as F2, and the area of the lower surface of the convex sealing piece as A;
when P0-P1< (F1-F2)/A, the automatic gas reflux balance valve is in a closed state, at the moment, the compression spring is stretched from a compressed state to a stretched state, and the spring piece is separated from the air isolation cushion to be bent and deformed upwards, so that the convex sealing piece is in sealing connection with the upper air hole of the shell, and the external air pressure outside the air pump is prevented from entering the air pump;
when P0-P1> (F2+F1)/A, the automatic gas reflux balance valve is in an open state, at the moment, the compression spring is compressed from a stretching state to a shrinking state, the spring piece bends downwards to deform to be propped against the air isolation cushion, so that the convex sealing piece is separated from the upper air hole of the shell, and the side air hole and the lower air hole are isolated, and the air outside the air pump enters the air pump through the upper air hole, the spring piece positioned outside the convex sealing piece area and the side air hole.
In order to solve the technical problem, the invention provides another technical scheme as follows: the using method of the vibrating device comprises the following steps:
extending the telescopic pneumatic vibrator into a pouring duct of the prefabricated part to be constructed;
before and during grouting of the grouting pore canal through the grouting equipment, starting the air pump, pumping air in the grouting pore canal through the air film hole of the telescopic pneumatic vibrator through the pipeline, and discharging the air from the exhaust hole of the air pump;
when the automatic gas reflux balance valve is in a closed state, the vibrating device is in an air extraction state, when slurry wraps the gas film hole of the annular fold type gas film, the annular fold type gas film synchronously contracts along with the spiral spring due to negative pressure in the telescopic pneumatic vibrator, and the telescopic pneumatic vibrator vertically contracts, so that the slurry in the pouring pore canal is compacted and flows, and the gas in the slurry is discharged to the vicinity of the telescopic pneumatic vibrator;
when the automatic gas reflux balance valve is in an open state, the vibrating device is in a back-air state, after the internal gas pressure of the telescopic pneumatic vibrator is recovered, the annular fold type gas film synchronously stretches along with the spiral spring, the telescopic pneumatic vibrator generates vertical extrusion so as to compact and flow slurry in the pouring duct, the gas in the slurry is discharged to the vicinity of the telescopic pneumatic vibrator, and the air in the pouring duct is discharged through the gas film hole of the annular fold type gas film;
and repeatedly performing vertical contraction and vertical extrusion in the pouring pore canal through a telescopic pneumatic vibrator so as to compact the slurry in the pouring pore canal and completely discharge the gas in the slurry.
Compared with the prior art, the invention has the following beneficial effects:
the telescopic pneumatic vibrator, the vibrating device and the using method thereof are connected to the air pump through the pipeline and the hollow pipe, and after the telescopic pneumatic vibrator is inserted into the pouring pore canal of the prefabricated component, the air pump is started to pump air out of the pouring pore canal so as to discharge the air in the pouring pore canal; meanwhile, the slurry in the pouring pore canal is compacted by repeatedly contracting, extruding and flowing the slurry in the pouring pore canal through the repeated contraction and the extension of the telescopic pneumatic vibrator so as to compact and completely fill the prefabricated part, thereby improving the grouting quality of the concrete prefabricated part.
Drawings
Fig. 1 is a schematic structural view of a vibrating device;
fig. 2 to 6 are flowcharts of the vibrator used in the grouting process;
FIG. 7 is a schematic cross-sectional view of a telescopic pneumatic vibrator;
FIG. 8 is a schematic view of the structure at A-A in FIG. 7;
FIG. 9 is a schematic diagram of the automatic gas recirculation balance valve in the closed position;
FIG. 10 is a schematic view of the automatic gas return balance valve in an open state;
the figure shows:
10. a vibrating device;
100. the telescopic pneumatic vibrator comprises 110, a spiral spring, 120, an end plate, 130, a hollow tube, 140, a circumferential fold type air film, 141 and an air film hole;
200. the device comprises an air pump, 210, an automatic gas backflow balance valve, 211, a shell, 2111, an upper air hole, 2112, a side air hole, 2113, a lower air hole, 212, a spring piece, 213, a convex sealing piece, 214, a compression spring, 215, an air isolation cushion, 220, an air exhaust hole, PO, external air pressure of the pump, P1 and internal air pressure of the pump;
300. a pipe;
400. a prefabricated part 410 and a pouring duct;
500. concrete;
600. the gas was not discharged.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures: the advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
Example 1
Referring to fig. 7 to 8, a telescopic pneumatic vibrator 100 according to an embodiment of the present invention includes a coil spring 110, an end plate 120, a hollow tube 130 and a circumferential corrugated air film 140, wherein:
the coil spring 110 is linear.
An end plate 120 provided at one end of the coil spring 110.
A hollow tube 130 disposed at the other end of the coil spring 110.
The annular fold type air film 140 is sleeved on the spiral spring 110, two ends of the annular fold type air film 140 are connected to the end plate 120 and the hollow tube 130, and air film holes 141 are circumferentially distributed on the annular fold type air film 140. Wherein the air film holes 141 include, but are not limited to, round holes, square holes, regular polygonal holes, trapezoidal holes, etc. The circumferential fold type air film 140 may be a corrugated pipe or a cloth structure.
The hollow tube 130 and the circumferential pleated membrane 140 form an air guide cavity.
Example two
Referring to fig. 1 to 8, a second embodiment of the present invention provides a vibrating device 10, which includes an air pump 200 and the above-mentioned telescopic pneumatic vibrator 100 connected to the air pump 200 through a pipe 300, wherein an automatic gas return balance valve 210 is disposed on the air pump 200, and an air exhaust hole 220 is disposed on the air pump 200.
Referring to fig. 9 to 10, in the vibration device 10 according to the second embodiment of the present invention, the automatic gas backflow balancing valve 210 includes a housing 211, an upper gas hole 2111, a lower gas hole 2113 and a side gas hole 2112 are provided on the housing 211, a spring plate 212 capable of being bent bi-directionally with respect to the horizontal plane is provided on a side wall of the housing 211 above the side gas hole 2112 in the horizontal direction, a convex sealing member 213 sealed with or separated from the upper gas hole 2111 is provided above the spring plate 212, a compression spring 214 is provided between a lower portion of the spring plate 212 and a bottom surface of the housing 211, and a gas barrier 215 is provided around and sealed on the bottom surface of the housing 211 between the lower gas hole 2113 and the side gas hole 2112.
The outside air pressure outside the pump 200 is set to be P0, the inside air pressure inside the pump 200 is set to be P1, the elastic force of the compression spring 214 is F1, the elastic force of the spring piece 212 is F2, and the area of the lower surface of the male seal 213 is a.
When P0-P1< (F1-F2)/A, the automatic gas recirculation balance valve 210 is in a closed state, at this time, the compression spring 214 is extended from a compressed state to a stretched state, and the spring piece 212 is separated from the air blocking cushion 215 and is bent upwards to deform, so that the convex sealing member 213 is in sealing connection with the upper air hole 2111 of the housing 211, and the air outside the air pump 200 is prevented from entering the air pump 200.
When P0-P1> (f2+f1)/a, the automatic gas recirculation balance valve 210 is in an open state, at this time, the compression spring 214 is compressed from a stretched state to a contracted state, and the spring piece 212 is bent downward to be deformed against the gas barrier 215, so that the convex seal 213 is separated from the upper gas hole 2111 and the side gas hole 2112 and the lower gas hole 2113 of the housing 211, and the outside air pressure outside the pump 200 is introduced into the pump 200 through the upper gas hole 2111, the spring piece 212 located outside the region of the convex seal 213, and the side gas hole 2112.
Example III
Referring to fig. 1 to 10, a third embodiment of the present invention provides a method for using the vibrating device 10, which includes the following steps:
in step 701, please refer to fig. 1, the telescopic pneumatic vibrator 100 is vertically inserted into the pouring channel 410 of the prefabricated component 400 to be constructed.
In step 702, please refer to fig. 2, before and during grouting the grouting hole 410 by the grouting device, the pump 200 is started to pump the air in the grouting hole 410 through the air film hole 141 of the telescopic pneumatic vibrator 100, and the air is exhausted from the air exhaust hole 220 of the pump 200. At this time, the non-exhausted gas 600 exists in the perfusion channel 410.
In step 703, referring to fig. 3, when the automatic gas recirculation balance valve 210 is in the closed state, the vibrator 10 is in the pumping state, and when the slurry wraps the gas film holes 141 of the circumferential corrugated gas film 140, the circumferential corrugated gas film 140 in the telescopic pneumatic vibrator 100 is synchronously contracted along with the coil spring 110 due to the negative pressure, and the telescopic pneumatic vibrator 100 is vertically contracted, so that the slurry in the pouring channel 410 is compacted and flows, and the gas in the slurry is discharged to the vicinity of the telescopic pneumatic vibrator 100. At this time, the non-exhausted gas 600 exists in the perfusion channel 410. Wherein the slurry refers to concrete 500.
In step 704, referring to fig. 4, when the automatic gas recirculation balance valve 210 is in the open state, the vibrator 10 is in the back-air state, and after the gas pressure in the flexible pneumatic vibrator 100 is restored, the circumferential pleated gas film 140 extends synchronously with the coil spring 110, the flexible pneumatic vibrator 100 generates vertical extrusion, so that the slurry in the pouring channel 410 is compacted and flows, the gas in the slurry is discharged to the vicinity of the flexible pneumatic vibrator 100, and the gas in the pouring channel 410 is discharged through the gas film hole 141 of the circumferential pleated gas film 140. At this time, the non-exhausted gas 600 exists in the perfusion channel 410.
In step 705, please refer to fig. 3 to 5, the vertical shrinkage and the vertical extrusion are repeatedly performed in the pouring channel 410 by the telescopic pneumatic vibrator 100, so as to compact the slurry in the pouring channel 410 and completely discharge the gas therein. That is, the steps 703 to 704 are repeatedly performed so that the slurry is compacted while the gas in the perfusion channel 410 is exhausted through the step 702.
Step 706, the telescopic pneumatic vibrator 100 is pulled out in the pouring duct 410, and step 703 and step 704 are repeated in the pulling-out process until the pumping and returning of the reciprocating body in the telescopic pneumatic vibrator 100 is stopped after all pulling-out is completed.
Referring to fig. 1 to 10, in the telescopic pneumatic vibrator 100, the vibrator 10 and the method for using the same according to the embodiments of the present invention, the telescopic pneumatic vibrator 100 is connected to an air pump 200 through a pipe 300 and a hollow pipe 130, and after the telescopic pneumatic vibrator 100 is vertically inserted into a pouring duct 410 of a prefabricated member 400, the air pump 200 is started to pump air from the pouring duct 410 so as to exhaust air in the pouring duct 410; meanwhile, the slurry in the pouring duct 410 is contracted and extruded by repeatedly contracting and expanding the telescopic pneumatic vibrator 100 to flow, compact the slurry in the pouring duct 410, and fill the prefabricated part 400 compactly and integrally, so that air bubbles in the pouring duct 410 can be avoided, and the grouting quality of the concrete prefabricated part 400 is improved. After the gas in the pouring channel 410 is discharged, when the fluid state wraps the telescopic pneumatic vibrator 100, the spiral spring 110 is controlled to shrink and expand along the length direction by gas suction and discharge to form vibration, and the circumferential fold type gas film 140 is disturbed with the fluid nearby to form vibration action on the fluid such as slurry. That is, the telescopic pneumatic vibrator 100 achieves the purpose of vibrating the slurry in the pouring tunnel 410 by repeatedly performing the vertical contraction-vertical extrusion.
The telescopic pneumatic vibrator 100, the vibrating device 10 and the using method thereof provided by the embodiment of the invention can realize the filling compactness of the fluid material in the filling duct 410 in a narrow inner filling duct 410 such as a sleeve, and can play a good role in secondary filling of non-compact defects in the filling duct 410.
According to the telescopic pneumatic vibrator 100, the vibrating device 10 and the using method thereof provided by the embodiment of the invention, the automatic gas backflow balance valve 210 is automatically opened and closed by adopting the compression spring 214 according to the air pressure difference, so that the air pump 200 can automatically release the air after exhausting the telescopic pneumatic vibrator 100 to a certain negative pressure, and the actions of reciprocating circulation air exhausting and releasing are performed. The telescopic pneumatic vibrator 100 mainly comprises a spiral spring 110, a circumferential fold type air film 140, the spiral spring 110 is wrapped after the circumferential fold type air film 140 is folded, and a plurality of air film holes 141 such as trapezoid small holes are formed in the circumferential fold type air film 140; once the outer fluid material encapsulates the gas film 140, the trapezoid-shaped pores automatically close due to pressure differential deformation, preventing fluid from flowing into the tube.
Before the fluid material is injected into the grouting hole 410, the telescopic pneumatic vibrator 100 is inserted into the suction pump 200 in advance and is turned on, and in the process that the fluid material such as concrete 500 is injected into the grouting hole 410, the air in the grouting hole 410 is pumped out to form negative pressure, so that the fluid material can flow into the grouting hole 410 more compactly and efficiently. When the fluid material fills the filling hole 410, the flexible pneumatic vibrator 100 is wrapped, and the negative pressure in the flexible pneumatic vibrator 100 is rapidly increased due to continuous air suction of the air pump 200, so that the flexible pneumatic vibrator 100 is contracted and deformed; when the negative pressure reaches a certain condition, the automatic gas backflow balance valve 210 on the air pump 200 automatically starts to work to release external air into the air pump 200, so that the negative pressure value in the telescopic pneumatic vibrator 100 is reduced, and the telescopic pneumatic vibrator 100 generates restoration rebound due to the spring in the pipe. The telescopic pneumatic vibrator 100 is reciprocally contracted and rebounded to vibrate the fluid material in the pouring channel 410 and discharge the residual gas in the channel.
The present invention is not limited to the above-described embodiments, but rather, the above-described embodiments are merely examples of some, but not all embodiments of the present invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention. Other levels of modification and variation to the present invention may occur to those skilled in the art. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims.
Claims (4)
1. A telescopic pneumatic vibrator, comprising:
the spiral spring is linear;
an end plate provided at one end of the coil spring;
the hollow tube is arranged at the other end of the spiral spring;
the annular fold type air film is sleeved on the spiral spring, two ends of the annular fold type air film are connected to the end plate and the hollow tube, and air film holes are distributed around the annular fold type air film.
2. The telescopic pneumatic vibrator according to claim 1, wherein the circumferential pleated air film is a bellows.
3. The vibrating device is characterized by comprising an air pump and the telescopic pneumatic vibrator according to claim 1, wherein the telescopic pneumatic vibrator is communicated with the air pump through a pipeline, an automatic gas reflux balance valve is arranged on the air pump, and an exhaust hole is arranged on the air pump; the automatic gas reflux balance valve comprises a shell, wherein an upper air hole, a lower air hole and a side air hole are formed in the shell, a spring piece capable of being bent bidirectionally relative to a horizontal plane is arranged on the side wall of the shell above the side air hole, a convex sealing piece which is sealed or separated from the upper air hole is arranged above the spring piece, a compression spring is arranged between the lower part of the spring piece and the bottom surface of the shell, and an air isolation cushion is arranged on the bottom surface of the shell between the lower air hole and the side air hole in a surrounding and sealing mode;
setting the external air pressure outside the air pump as P0, the internal air pressure inside the air pump as P1, the elastic force of the compression spring as F1, the elastic force of the spring piece as F2, and the area of the lower surface of the convex sealing piece as A;
when P0-P1< (F1-F2)/A, the automatic gas reflux balance valve is in a closed state, at the moment, the compression spring is stretched from a compressed state to a stretched state, and the spring piece is separated from the air isolation cushion to be bent and deformed upwards, so that the convex sealing piece is in sealing connection with the upper air hole of the shell, and the external air pressure outside the air pump is prevented from entering the air pump;
when P0-P1> (F2+F1)/A, the automatic gas reflux balance valve is in an open state, at the moment, the compression spring is compressed from a stretching state to a shrinking state, the spring piece bends downwards to deform to be propped against the air isolation cushion, so that the convex sealing piece is separated from the upper air hole of the shell, and the side air hole and the lower air hole are isolated, and the air outside the air pump enters the air pump through the upper air hole, the spring piece positioned outside the convex sealing piece area and the side air hole.
4. A method of using a vibrating device according to claim 3, wherein,
extending the telescopic pneumatic vibrator into a pouring duct of the prefabricated part to be constructed;
before and during grouting of the grouting pore canal through the grouting equipment, starting the air pump, pumping air in the grouting pore canal through the air film hole of the telescopic pneumatic vibrator through the pipeline, and discharging the air from the exhaust hole of the air pump;
when the automatic gas reflux balance valve is in a closed state, the vibrating device is in an air extraction state, when slurry wraps the gas film hole of the annular fold type gas film, the annular fold type gas film synchronously contracts along with the spiral spring due to negative pressure in the telescopic pneumatic vibrator, and the telescopic pneumatic vibrator vertically contracts, so that the slurry in the pouring pore canal is compacted and flows, and the gas in the slurry is discharged to the vicinity of the telescopic pneumatic vibrator;
when the automatic gas reflux balance valve is in an open state, the vibrating device is in a back-air state, after the internal gas pressure of the telescopic pneumatic vibrator is recovered, the annular fold type gas film synchronously stretches along with the spiral spring, the telescopic pneumatic vibrator generates vertical extrusion so as to compact and flow slurry in the pouring duct, the gas in the slurry is discharged to the vicinity of the telescopic pneumatic vibrator, and the air in the pouring duct is discharged through the gas film hole of the annular fold type gas film;
and repeatedly performing vertical contraction and vertical extrusion in the pouring pore canal through a telescopic pneumatic vibrator so as to compact the slurry in the pouring pore canal and completely discharge the gas in the slurry.
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| CN110258570A (en) * | 2019-07-18 | 2019-09-20 | 中交第一航务工程局有限公司 | A kind of flexible plug-in type concrete vibrating framed bent |
| CN110441502A (en) * | 2019-07-19 | 2019-11-12 | 广州大学 | A kind of the corrugated pipe forming sleeve and forming method of cement-based material self-constriction test |
| CN212072329U (en) * | 2019-12-11 | 2020-12-04 | 郑丽红 | Cement prefab low pressure casting device |
| CN113073851A (en) * | 2021-01-07 | 2021-07-06 | 丘永梅 | Surface point vibration type vibrating rod |
| CN214834875U (en) * | 2021-08-02 | 2021-11-23 | 江苏建宇建设集团有限公司 | Air-entraining concrete vibrating rod |
| CN114718311A (en) * | 2022-03-09 | 2022-07-08 | 中冶建工集团有限公司 | Air pump for air exhaust of steel column base plate opening and grouting construction method thereof |
| CN114607149A (en) * | 2022-03-10 | 2022-06-10 | 中青建安建设集团有限公司 | Construction is with bayonet high frequency concrete vibrator that has splashproof function |
| CN116005962A (en) * | 2022-12-26 | 2023-04-25 | 兴泰建设集团有限公司 | Buttress concrete vibrating device for shock insulation engineering construction |
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