CN105735650A - Concrete pumping equipment and vibration reduction method for tail end of arm support of concrete pump truck - Google Patents
Concrete pumping equipment and vibration reduction method for tail end of arm support of concrete pump truck Download PDFInfo
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- CN105735650A CN105735650A CN201410766795.7A CN201410766795A CN105735650A CN 105735650 A CN105735650 A CN 105735650A CN 201410766795 A CN201410766795 A CN 201410766795A CN 105735650 A CN105735650 A CN 105735650A
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- 238000005086 pumping Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 claims abstract description 9
- 238000013016 damping Methods 0.000 claims description 16
- 230000010355 oscillation Effects 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 8
- 239000012530 fluid Substances 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005276 aerator Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses concrete pumping equipment and a vibration reduction method for the tail end of an arm support of a concrete pump truck. The pressure gas is creatively filled into the concrete conveying pipe through the additionally arranged inflation system, so that continuous gas is filled into the discontinuous volume of the discontinuously pumped concrete, and the pumped medium flows continuously, thereby fundamentally reducing the pumping impact and achieving the purpose of reducing the vibration of the tail end of the arm support. Therefore, in the construction process of the concrete pump truck, the displacement vibration of the tail end of the arm support can be actively reduced, and the construction stability of the concrete pump truck is improved.
Description
Technical field
The present invention relates to concrete pumping field, in particular it relates to a kind of pumping equipment and oscillation damping method thereof.
Background technology
Usual concrete mixer is to carry out pump concrete by the discontinuous intermitten of twin-tub; discontinuity due to concrete conveyance; minor details concrete delivery pipe (i.e. flexible pipe) place making arm support tail end can produce very big vibration; cause that jib is tired; end location is inaccurate; build operating difficulties, and too increase operational danger.
Prior art have employed the vibration of the arm support tail end that various ways brings due to concrete conveyance with alleviation.Such as, in the patent application that publication number is CN1932215A, have employed the mode pressing down the oil cylinder that shakes.Wherein, it is connected with pressing down the oil cylinder that shakes by arm support oil cylinder, pressure sensing cell detects arm support oil cylinder in real time and/or presses down the pressure information of fluid in the oil cylinder that shakes, the oil liquid pressure signal collected is sent to and presses down oil cylinder control unit of shaking, press down oil cylinder control unit of shaking it is analyzed, after process, repeatedly adjust and press down rod chamber and rodless cavity volume in the oil cylinder that shakes, make to press down the oil cylinder generation impulse oscillation that shakes, the arm support tail end vibration amplitude that the arm support tail end vibration amplitude that impulse oscillation causes causes less than or equal to the discontinuous conveying of concrete, and opposite in phase, thus effectively cutting down amplitude, suppress vibration.
It addition, disclosed in the patent application that publication No. is CN102071809A the vibration absorber of a kind of concrete pump and concrete pump truck arm and method.Wherein, the vibration absorber of concrete pump truck arm includes: damping control unit, is connected with the electromagnetic proportional valve of arm support oil cylinder；Arm support tail end vibration detecting unit, monitors the range parameter of the minor details arm of jib and sends range parameter signal to damping control unit；Jib attitude monitoring unit, monitors the angle parameter of jib and sends angle parameter signal to damping control unit.Its oscillation damping method comprises the following steps: the operational factor of monitoring concrete pump truck arm；Generate control signal according to monitoring parameter, export electromagnetic proportional valve according to control signal and control electric current, control the piston position of arm support oil cylinder；Wherein, the monitoring parameter of jib includes: the Oscillation Amplitude parameter of minor details arm and the angle parameter of jib.
But, the above-mentioned vibration means that presses down is respectively provided with many deficiencies.In adopting the mode pressing down the oil cylinder that shakes, the vibration caused owing to pump truck jib in work progress is subject to the impact of discontinuous concrete cannot be predicted, and produce the vibration that different attitude arm support tail ends cause by pulsating vibration be also difficult to accurate control by pressing down the oil cylinder that shakes, therefore control foundation is done by two amounts being difficult to predict, it is difficult to obtain and desirably controls effect, and the stress of boom system certainly will be increased by increasing the method for the impulse oscillation of opposite in phase, reduce the service life of jib.In controlled the mode of piston of arm support oil cylinder by vibration detecting unit, the jib attitude monitored in real time by monitoring means and arm support tail end vibration data are as control signal, control algolithm is complicated, and different gesture stability parameters are ever-changing, control robustness poor.
Therefore, it is necessary to seek a kind of simple, feasible to press down the mode of shaking reliably, to be applied to concrete pumping equipment, especially in concrete mixer.
Summary of the invention
It is an object of the invention to provide a kind of concrete pumping equipment and the arm support tail end oscillation damping method of a kind of concrete mixer, effectively to alleviate or to suppress the vibration of the end outlet of concrete delivery pipe, improve car load service behaviour.
For achieving the above object, according to an aspect of the present invention, provide a kind of concrete pumping equipment, including concrete delivery pipe and gas charging system, this gas charging system includes pressure gas source and aerating pipe, this aerating pipe connects described pressure gas source and described concrete delivery pipe, with to charged pressure gas in the tube chamber of this concrete delivery pipe.
Preferably, described gas charging system also includes pressure regulator and Pressure gauge, and this pressure regulator is arranged in described aerating pipe to regulate the gas pressure in this aerating pipe, and described Pressure gauge detects the port of export gas pressure of described pressure regulator.
Preferably, described gas charging system also include check valve and described in on-off control the switch valve of aerating pipe, described check valve is arranged in the described aerating pipe part between described pressure regulator and described concrete delivery pipe, to allow the pressed gas of described pressure gas source flow in described concrete delivery pipe and reversely end.
Preferably, the tube wall of described concrete delivery pipe is provided with pipe joint, and described aerating pipe is connected the tube chamber connecting described concrete delivery pipe with described pipe joint.
Preferably, described concrete pumping equipment is concrete mixer, and the chassis of this concrete mixer is provided with and carries gas tank, and this carries gas tank and is connected with described aerating pipe as described pressure gas source.
Preferably, described concrete mixer includes pumping oil cylinder, jib and jib and installs turntable, described concrete delivery pipe includes front conveying pipeline section and rear conveying pipeline section, before described, conveying pipeline section is connected between described pumping oil cylinder and described jib installation turntable, after described, conveying pipeline section is arranged on described jib, and described aerating pipe is connected on tube wall and/or the rear tube wall carrying pipeline section of described front conveying pipeline section.
According to another aspect of the present invention, provide the arm support tail end oscillation damping method of a kind of concrete mixer, the method is by charged pressure gas in the tube chamber of the concrete delivery pipe of the concrete mixer carrying out concrete pumping, to alleviate the vibration of the end outlet of described concrete delivery pipe.
Preferably, before described concrete delivery pipe carries out concrete pumping, in this concrete delivery pipe, first carry out the inflation of pressed gas.
Preferably, described concrete mixer includes pumping oil cylinder, jib and jib and installs turntable, described concrete delivery pipe includes front conveying pipeline section and rear conveying pipeline section, before described, conveying pipeline section is connected between described pumping oil cylinder and described jib installation turntable, and after described, conveying pipeline section is arranged on described jib；
Wherein, carry pipeline section and/or described rear conveying that pipeline section is holed before described, then make aerating pipe connect with described concrete delivery pipe and be formed external seal in described drill hole.
Preferably, the plurality of positions at described concrete delivery pipe is holed, and part boring pipe laying joint in the boring of many places is also connected with described aerating pipe by this pipe joint, many places hole in all the other borings utilize plug to block.
Preferably, in the single pump cycles of the pumping oil cylinder of described concrete mixer, needed for the pressure gas scale of construction that is filled be not less than the described suction of pumping oil cylinder with in the interval time of stock, the mobile space volume that concrete moves as inertia in described concrete delivery pipe.
According to technique scheme, in the concrete pumping equipment of the present invention and the arm support tail end oscillation damping method of pump truck, creatively by the gas charging system set up toward charged pressure gas in the concrete delivery pipe carry out concrete pumping, particularly in being pre-charged with pressed gas before pump concrete, make to be filled with in the concrete interruption volume that continuous gas pumps to discontinuity, make pumped medium flowing continuously, impact thus fundamentally reducing pumping, reach to reduce the purpose of arm support tail end even car load vibration, and due to charged pressure gas, make to be formed in concrete conveying pipe multiphase flow, increase the internal energy between multiphase flow to dissipate, also vibration is fundamentally alleviated.Therefore, in concrete mixer work progress, can actively reduce arm support tail end displacement vibration, improve concrete mixer construction stability.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, is used for explaining the present invention, but is not intended that limitation of the present invention together with detailed description below.In the accompanying drawings:
Fig. 1 is the structure principle chart of the gas charging system of the concrete pumping equipment according to the preferred embodiment of the present invention；
Fig. 2 is the structural representation of the concrete pumping equipment according to the preferred embodiment of the present invention, and this concrete pumping equipment is concrete mixer；
Fig. 3 is flowing to and the schematic diagram of effect after the pressed gas of display gas charging system is filled with in concrete delivery pipe, and wherein arrow represents air flow direction or concrete flows to；
Fig. 4 is the inertia displacement schematic diagram in concrete delivery pipe of the concrete under pumping oil cylinder effect.
Description of reference numerals
1 pressure gas source 2 aerating pipe
3 pressure regulator 4 Pressure gauges
5 switch valve 6 check valves
Pipeline section is carried before 7 pipe joints 8
Pipeline section 10 is carried to pump oil cylinder after 9
Turntable installed by 11 jib 12 jibs
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains the present invention, it is not limited to the present invention.
In invention, when not making contrary explanation, the noun of locality of use as " upper and lower, top, the end " usually for direction shown in the drawings or for each parts mutual alignment relationship description word on vertical, vertical or gravity direction.
Present invention firstly provides a kind of concrete pumping equipment, referring to Fig. 1, this pumping equipment includes concrete delivery pipe and gas charging system, this gas charging system includes pressure gas source 1 and aerating pipe 2, this aerating pipe 2 Bonding pressure source of the gas 1 and concrete delivery pipe, with to charged pressure gas in the tube chamber of this concrete delivery pipe.Wherein, as total invention objective, the gas charging system that the present invention passes through to set up is toward charged pressure gas in the concrete delivery pipe carry out concrete pumping, thus the pumping produced when fundamentally reducing concrete delivery pipe pump concrete is impacted, and the especially vibration of end outlet.
For its ultimate principle, pumped medium such as concrete etc. is carried out each through the discontinuous intermitten of twin-tub due to pumping equipment such as concrete mixer etc., thus when being pumped by concrete delivery pipe, charged pressure gas in concrete delivery pipe, the multiphase flow being made up of gas and concrete can be formed in tube chamber, in Bottomhole pressure process, multiphase flow internal energy dissipates and is continuously increased, thus the energy when arriving at the end outlet of concrete delivery pipe at arm support tail end place is lower, effect of vibration is less.In addition, formed by concrete segmentation in concrete water transmission pipe of the discontinuous intermitten pumping of twin-tub, by being filled with continuous print pressed gas in the interruption volume between segmental concrete, pumped medium flowing can be made more continuous, thus impacting fundamentally reducing pumping, reach to reduce the vibration of arm support tail end even car load, also will specifically address below.
Referring to Fig. 1, the gas charging system set up includes pressure gas source 1, aerating pipe 2, pressure regulator 3 and Pressure gauge 4, pressure regulator 3 is arranged in aerating pipe 2 to regulate the gas pressure transporting to concrete delivery pipe in this aerating pipe 2, and Pressure gauge 4 is preferably connected to the port of export of detection pressure regulator 3 to detect the gas pressure of this port of export.Certainly, Pressure gauge 4 may also be arranged in other position of aerating pipe 2.Pressure gas source 1 can be such as aerator etc. with pressurizer, in the present embodiment, this concrete pumping equipment is concrete mixer, and the chassis of concrete mixer is generally fitted with to carry gas tank as pressure gas source 1, and this carries gas tank and is connected with aerating pipe 2.Carrying the gas in gas tank is the pressed gas with certain pressure, and can constantly obtain gas from the external world supplementary, it is thus possible to carry out the conveying of pressed gas continuously to concrete delivery pipe.According to operating mode and needs, gather pressure signal by pressure regulator 3 and Pressure gauge 4 and regulate gas pressure, it is also possible to by quantifying to regulate the flow of pressed gas for the switch valve 5 of on-off control aerating pipe 2.Switch valve 5 can be electronic, the mode such as pneumatically or manually.In addition, aerating pipe 2 part between pressure regulator 3 and concrete delivery pipe also can arrange check valve 6, to allow the pressed gas of pressure gas source 1 to flow in concrete delivery pipe, and reversely end to prevent pressed gas from flowing backwards, especially when the force value that the air pressure in concrete delivery pipe is arranged higher than pressure regulator 3.
For forming the connection between concrete delivery pipe and aerating pipe 2, in the present embodiment, the tube wall of concrete delivery pipe is provided preferably with pipe joint 7, as it is shown in figure 1, aerating pipe 2 is connected with pipe joint 7, thus connecting the tube chamber of concrete delivery pipe.Pipe joint 7 can be small pipe section, it is possible to welding manner or be threadably received on the tube wall of concrete delivery pipe.Can directly be socketed, weld or be engaged by connectors such as pipe connecting sleeves between pipe joint 7 with aerating pipe 2.
Additionally, aerating position can be any active position on concrete delivery pipe.For concrete mixer, as shown in Figure 2, concrete mixer generally comprises pumping oil cylinder 10, jib 11 and jib and installs turntable 12, concrete delivery pipe can include front conveying pipeline section 8 and rear conveying pipeline section 9, front conveying pipeline section 8 is connected to pumping oil cylinder 10 and jib is installed between turntable 12, rear conveying pipeline section 9 is arranged on jib 11, and therefore aerating pipe 2 carries the tube wall of pipeline section 8 and/or the rear tube wall carrying pipeline section 9 before may connect to, according to concrete operating mode and parameter setting.Hereinafter also will be explained in detail aerating position, number and juncture etc.
On the basis of above-described gas charging system, below for concrete mixer, illustrate the arm support tail end oscillation damping method of a kind of concrete mixer, the method is by charged pressure gas in the tube chamber of the concrete delivery pipe of the concrete mixer carrying out concrete pumping, to alleviate the vibration of the end outlet of concrete delivery pipe.
Wherein preferably, before concrete delivery pipe carries out concrete pumping, in this concrete delivery pipe, first carry out the inflation of pressed gas.So can avoid the ringing effect at inflation initial stage, the gas volume ensured during pumping in concrete delivery pipe is suitable, multiphase medium internal energy dissipates stable, and arm support tail end output pressure maintains less stationary value always, and arm support tail end vibration is also fluctuated in less scope.
After charged pressure gas, the media flow process in concrete delivery pipe is made a concrete analysis of.Wherein, in concrete delivery pipe in the process of pumped medium, continuously to charged pressure gas in conveying pipe, when gas-solid-liquid multiphase flow flows, mean flow resistance coefficient is:
Wherein ρ is the fluids within pipes average density of concrete delivery pipe；τwShear stress for inner-walls of duct face；V is the mean flow rate of fluids within pipes；Integral termInner-walls of duct face area for unit length.
In concrete pumping equipment pumped medium process, inflating the initial stage, the gas in pipelines content of concrete delivery pipe is relatively low, mean flow resistance coefficient fmRelatively big, mean flow rate v is less for fluids within pipes, but is as the increase of the interior gas volume of conveying pipe, mean flow resistance coefficient fmDeclining, the mean flow rate v of fluids within pipes increases；From the inflation initial stage to full concrete delivery pipe and reach to inflation stablize time, pressed gas multiphase medium in concrete delivery pipe is one or more states such as laminar flow, bubble stream, slug flow are moved, along with the increase of mean flow rate v in pipeline, interaction force between gas-solid-liquid multiphase medium strengthens gradually, internal energy dissipates and is continuously increased, when the pressed gas in concrete conveying pipe is transported to arm support tail end release, now tubulence energy dissipates maximum.When the input pressure of concrete delivery pipe is identical, now the output pressure of arm support tail end is minimum, and vibration of arm also correspondence minimizes.
Simultaneously, as shown in Figure 3, due to aforesaid concrete pumping characteristic, pumped medium flowing for be interrupted, discrete, after charge air conditioning is filled with in concrete delivery pipe along the arrow straight down shown in Fig. 3, when in pumped medium, kinestate reaches stable, the concrete of aerating position front and rear sections is all produced thrust by pressed gas in concrete conveying pipe, extruding void space, and fill interruption volume, the impact of concrete piston Yu medium is served cushioning effect by the thrust that pressed gas produces simultaneously.
Wherein, the concrete pumping equipment of different types, the suction of pumping oil cylinder and the interval of stock are inconsistent, and the interruption volume resulted in and required gas buffer thrust are also inconsistent, it is therefore desirable to Proper Match aerating position, the blowing pressure and aeration quantity.
First, in the single pump cycles of the pumping oil cylinder 10 of concrete mixer, needed for the pressure gas scale of construction that is filled with should be not less than the suction of pumping oil cylinder 10 with in the interval time of stock, the mobile space volume that concrete moves as inertia in concrete delivery pipe.As shown in Figure 4, in pumped medium process, start in the interval period in suction moment to concrete cylinder in the concrete cylinder pump material stop timing, concrete in concrete conveying pipe can at displacement S under effect of inertia, if the sectional area of concrete delivery pipe is known as A, then at this moment between can form the interruption volume of V=S*A, the mobile space volume that namely described inertia moves, then required aeration quantity Q should be not less than V in interval in concrete delivery pipe.Certainly, this aeration quantity is preliminary theory estimated value, and actual value can fluctuate up and down in theoretical value, can pass through concrete test and record.
Secondly, in order to overcome the interruption volume that under effect of inertia, concrete is formed, the blowing pressure of gas charging system needs the concrete thrust that can overcome in concrete delivery pipe, and namely pressed gas can act on concrete so as to backflow, so that pumped medium flowing is continuously.Therefore, the functional expression of the blowing pressure P can be expressed as:
P=F (ρ, μ, θ, D, f, K, L)
Wherein, ρ is the fluids within pipes average density of concrete delivery pipe；μ is dielectric viscosity；θ is the angle between concrete delivery pipe and horizontal plane；D is the caliber of concrete delivery pipe；L is the length of the concrete delivery pipe between aerating position and hopper discharging opening；F is the internal friction of the concrete delivery pipe generation of length L；K is the bulk modulus of charge air conditioning.The pressure of charge air conditioning is related with medium physical parameter, aerating position, charge air conditioning physical parameter and multiphase flow energy dissipation, owing to operating mode is complicated, influence factor is many, can pass through to test obtain and draw rule for choosing of different operating mode the blowing pressures.
Finally, as previously mentioned, aerating position can be the concrete mixer upper any active position of conveying pipe, the concrete delivery pipe can installed on the concrete delivery pipe walking platen place of concrete mixer or on jib such as, is arranged aerating position, it is possible to choose rational aerating position according to the pumped medium difference demand of concrete mixer.In the concrete mixer shown in Fig. 2, the rear conveying pipeline section 9 optionally installed on the front conveying pipeline section 8 walking platen place and/or jib 11 is holed, it is possible to bore single hole and be inflated, it is possible to bore hole, many places so that selecting and adjusting.In the present embodiment, many places boring on front conveying pipeline section 8 and rear conveying pipeline section 9, part boring pipe laying joint 7 in the boring of many places is also connected with aerating pipe 2 by this pipe joint 7, many places hole in all the other borings utilize plug to block.During concrete operations, it is possible to being respectively welded pipe joint 7 in each drill hole, aerating pipe 2 is connected with selected pipe joint 7, being formed external seal, only connect with concrete delivery pipe, remaining pipes joint 7 then can pass through plug etc. and block.
With in prior art by press down shake oil cylinder or controlled by vibration detecting unit arm support oil cylinder piston press down the mode of shaking compared with, the inflation of the present invention presses down mode of shaking actively direct, simple in construction, necessary hardware and software arrangements are few, cost is low, energy consumption is little, and inflation performance is stable, not by restrictions such as jib construction cloth attitude, pumping gears, to arm support tail end displacement vibration good damping result, adaptability for working condition is higher.Gas charging system does not affect arm support tail end vibration balancing position.The vibration insulating system of existing concrete pump truck realizes each through electrohydraulic control system substantially, system often relates to the precision components such as sensor, vibration insulating system is limited by all multicomponent devices, simultaneously because the construction operating mode of concrete mixer is generally severe, the reliability of vibration insulating system is poor, in contrast, the gas charging system of the present invention is higher than the unfailing performance of other electro-hydraulic type vibration insulating system.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing; but; the present invention is not limited to the detail in above-mentioned embodiment; in the technology concept of the present invention; technical scheme can being carried out multiple simple variant, these simple variant belong to protection scope of the present invention.
It is further to note that, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, it is possible to be combined by any suitable mode, in order to avoid unnecessary repetition, various possible compound modes are no longer illustrated by the present invention separately.
Additionally, can also carry out combination in any between the various different embodiment of the present invention, as long as it is without prejudice to the thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (11)
1. a concrete pumping equipment, including concrete delivery pipe, it is characterized in that, described concrete pumping equipment also includes gas charging system, this gas charging system includes pressure gas source (1) and aerating pipe (2), this aerating pipe (2) connects described pressure gas source (1) and described concrete delivery pipe, with to charged pressure gas in the tube chamber of this concrete delivery pipe.
2. concrete pumping equipment according to claim 1, it is characterized in that, described gas charging system also includes pressure regulator (3) and Pressure gauge (4), this pressure regulator (3) is arranged in described aerating pipe (2) to regulate the gas pressure in this aerating pipe (2), and described Pressure gauge (4) detects the port of export gas pressure of described pressure regulator (3).
3. concrete pumping equipment according to claim 2, it is characterized in that, described gas charging system also includes check valve (6) and is used for the switch valve (5) of aerating pipe (2) described in on-off control, described check valve (6) is arranged in described aerating pipe (2) part between described pressure regulator (3) and described concrete delivery pipe, to allow the pressed gas of described pressure gas source (1) flow in described concrete delivery pipe and reversely end.
4. concrete pumping equipment according to claim 1, it is characterized in that, the tube wall of described concrete delivery pipe is provided with pipe joint (7), and described aerating pipe (2) is connected the tube chamber connecting described concrete delivery pipe with described pipe joint (7).
5. concrete pumping equipment according to claim 1, it is characterized in that, described concrete pumping equipment is concrete mixer, and the chassis of this concrete mixer is provided with and carries gas tank, and this carries gas tank and is connected with described aerating pipe (2) as described pressure gas source (1).
6. concrete pumping equipment according to claim 5, it is characterized in that, described concrete mixer includes pumping oil cylinder (10), turntable (12) installed by jib (11) and jib, described concrete delivery pipe includes front conveying pipeline section (8) and rear conveying pipeline section (9), before described, conveying pipeline section (8) is connected between described pumping oil cylinder (10) and described jib installation turntable (12), pipeline section (9) is carried to be arranged on described jib (11) after described, described aerating pipe (2) is connected to the tube wall of described front conveying pipeline section (8) and/or carries afterwards on the tube wall of pipeline section (9).
7. the arm support tail end oscillation damping method of a concrete mixer, it is characterised in that the method is by charged pressure gas in the tube chamber of the concrete delivery pipe of the concrete mixer carrying out concrete pumping, to alleviate the vibration of the end outlet of described concrete delivery pipe.
8. the arm support tail end oscillation damping method of concrete mixer according to claim 7, it is characterised in that before described concrete delivery pipe carries out concrete pumping, first carries out the inflation of pressed gas in this concrete delivery pipe.
9. the arm support tail end oscillation damping method of concrete mixer according to claim 7, it is characterized in that, described concrete mixer includes pumping oil cylinder (10), jib (11) and jib and installs turntable (12), described concrete delivery pipe includes front conveying pipeline section (8) and rear conveying pipeline section (9), before described, conveying pipeline section (8) is connected between described pumping oil cylinder (10) and described jib installation turntable (12), carries pipeline section (9) to be arranged on described jib (11) after described；
Wherein, before described conveying pipeline section (8) and/or described after carry pipeline section (9) holed, then make aerating pipe (2) connect with described concrete delivery pipe and be formed external seal in described drill hole.
10. the arm support tail end oscillation damping method of concrete mixer according to claim 9, it is characterized in that, plurality of positions at described concrete delivery pipe is holed, part boring pipe laying joint (7) in the boring of many places is also connected with described aerating pipe (2) by this pipe joint (7), many places hole in all the other borings utilize plug to block.
11. the arm support tail end oscillation damping method of concrete mixer according to claim 7, it is characterized in that, in the single pump cycles of the pumping oil cylinder (10) of described concrete mixer, needed for the pressure gas scale of construction that is filled be not less than the described suction of pumping oil cylinder (10) with in the interval time of stock, the mobile space volume that concrete moves as inertia in described concrete delivery pipe.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112227724A (en) * | 2020-10-30 | 2021-01-15 | 湖南响箭重工科技股份有限公司 | Air path device of pump truck arm support |
| CN114658226A (en) * | 2022-04-08 | 2022-06-24 | 福建龙驰汽车有限公司 | Anti-swing device for tail end hose of concrete pump truck and using method thereof |
| CN114775613A (en) * | 2022-03-25 | 2022-07-22 | 中国能源建设集团广西水电工程局有限公司 | Super-hectometer full-pipe roller compacted concrete buffer conveying system and method |
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| CN103046748A (en) * | 2012-12-19 | 2013-04-17 | 中联重科股份有限公司 | Control equipment, method and system for inhibiting vibration of boom of pump truck and pump truck |
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| US3754683A (en) * | 1971-08-27 | 1973-08-28 | J Broadfoot | Apparatus for pneumatically placing semi-fluid materials |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112227724A (en) * | 2020-10-30 | 2021-01-15 | 湖南响箭重工科技股份有限公司 | Air path device of pump truck arm support |
| CN114775613A (en) * | 2022-03-25 | 2022-07-22 | 中国能源建设集团广西水电工程局有限公司 | Super-hectometer full-pipe roller compacted concrete buffer conveying system and method |
| CN114658226A (en) * | 2022-04-08 | 2022-06-24 | 福建龙驰汽车有限公司 | Anti-swing device for tail end hose of concrete pump truck and using method thereof |
| CN114658226B (en) * | 2022-04-08 | 2023-11-10 | 福建龙驰汽车有限公司 | Anti-swing device for end hose of concrete pump truck and application method thereof |
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