CN1951657B - Device for suppressing pulsated impact of slurry flow in concrete pump vehicle - Google Patents
Device for suppressing pulsated impact of slurry flow in concrete pump vehicle Download PDFInfo
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- CN1951657B CN1951657B CN2006100325545A CN200610032554A CN1951657B CN 1951657 B CN1951657 B CN 1951657B CN 2006100325545 A CN2006100325545 A CN 2006100325545A CN 200610032554 A CN200610032554 A CN 200610032554A CN 1951657 B CN1951657 B CN 1951657B
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- feed supplement
- defeated material
- material passage
- rotating shaft
- hyoplastron
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
Abstract
The invention relates to a device used to restrain the slurry fluid impulse impact of concrete pump. Wherein, it comprises transmission channel, feeding cylinder and controller; the feeding cylinder is through to the transmission channel; the feeding cylinder has feeding piston and feeding piston rod; the feeding piston rod is connected to the controller; between the feeding cylinder and the material inlet of transmission channel, there is a switch valve for avoiding reflux of slurry. The invention has simple structure, to realize continuous flow of slurry, and reduce the impulse impact.
Description
Technical field
The present invention is mainly concerned with the constructional engineering machinery field, refers more particularly to a kind of device that concrete mixer mixes the impact of slurry fluid pulsation that is used for suppressing.
Background technology
In the existing constructional engineering machinery, for carrying the equipment that mixes the slurry fluid, be meant especially and be installed in the concrete pump on the truck chassis or drag pump, it mainly acts on is that concrete is transported to the specified target location of architectural engineering from the pump truck position, this equipment mainly comprises pump truck chassis, concrete pump, pipeline and jib, and jib is called " boom " again.Referring to Figure 18 and shown in Figure 19, be in and travel or the concrete mixer side view of deployed condition not, first jib 22, second jib 23, the 3rd jib 24, the 4th jib 25 and the 5th jib 26 contractile motion by oil cylinder 28 draws in is in the same place.Referring to shown in Figure 180, each saves jib each other by rotating shaft 27 rotations, realizes opening and folder function, is subjected to the restriction of space and structure, and jib is limited within limits in the angle that relatively rotates at rotating shaft 27 places.Respectively to save jib and can rotate in order to make, need a driving arrangement, promptly oil cylinder 28, and flexible by oil cylinder 28 inner piston rods relies on connecting rod 29 just to drive adjacent following joint jib rotation.Turntable 30 is installed on the automobile chassis or on the cherry picker, during work, turntable 30 and on parts can in horizontal extent, rotate, concrete is by being transported to flexible pipe 31 positions of jib end being attached to pipeline on the jib, and, arrive operator's appointed positions from flexible pipe 31 terminal outflows.Can rotate because respectively save between the jib, so the same can the rotation of concrete conveying pipe of installing on it at rotating shaft 27 places.
Concrete alternately pushes concrete conveying pipe by the two feed cylinders that are installed on the pump truck chassis by bindiny mechanism, and this pipeline moves with the more piece pivoted arm together by certain fixed form, like this, just concrete can be transported to desirable target location.Because this kind equipment adopts double-piston feed cylinder feeding cycle usually, has the feed discontinuity, cause jib to produce resonance, this vibration is very harmful, can cause inaccurate, the jib problems of crack in the terminal location of jib.When the feed frequency of Concrete Double piston feed cylinder during near 1/2 times of the current attitude of pumping vehicle arm rack or 1 times of intrinsic frequency, jib will produce strong resonance, particular case may reach the amplitude more than the 1000mm down, for fear of resonance, cause jib damage and operator's danger, has only the feed frequency that reduces pump truck, within the specific limits with the vibration limiting that keeps the jib end.
Along with pump truck develops to big discharge capacity, long-armed direction, it is serious day by day that the vibration problem of jib becomes, and this is because jib is long more, its system frequency is low more, and the pumping frequency is high more, and the vibration that jib produces is strong more, even resonance, cause that beam mechanism damages, and major accident occurs.In order to increase the pumping frequency of pumping system, increase work efficiency, reduce the jib vibration, the particularly vibration of jib end hose, the purpose of this invention has been proposed, how to guarantee promptly that the pump truck pumping system is operated in or during near 1/2 times or 1 times of intrinsic frequency, the vibration minimum of boom system can be controlled at the amplitude of jib end within the 100mm under the best situation.
Summary of the invention
The technical problem to be solved in the present invention just is: at the technical problem of prior art existence, the invention provides a kind of simple in structure, can make in the concrete pump truck arm pipeline concrete that flows become continuous-flow, thereby the reduction pulsatile impact reduces the device that is used for suppressing the impact of the mixed slurry of concrete mixer fluid pulsation that jib vibrates.
For solving the problems of the technologies described above, the solution that the present invention proposes is: a kind of device that is used for suppressing the impact of the mixed slurry of concrete mixer fluid pulsation, it comprises defeated material passage, feed supplement cylinder and controlling organization, the feed supplement cylinder keeps being communicated with defeated material passage, be provided with feed supplement piston and feed supplement piston rod in the feed supplement cylinder, the feed supplement piston rod links to each other with controlling organization, it is characterized in that: be provided with between the charging aperture of described feed supplement cylinder and defeated material passage and be used for preventing to mix the on-off valve that the slurry fluid refluxes.
Described on-off valve comprises hyoplastron and hyoplastron rotating shaft, and this hyoplastron is installed in the hyoplastron rotating shaft, and the hyoplastron rotating shaft is fixed on feed supplement cylinder or the defeated material passage.Described hyoplastron rotating shaft extends to the outside of defeated material passage, the hyoplastron rotating shaft that is positioned at the defeated material passage outside is provided with baffle plate, the lateral wall of defeated material passage is provided with the block that matches with baffle plate, and an end of an extension spring is fixed on the defeated material passage, and the other end links to each other with baffle plate in the hyoplastron rotating shaft.
Described on-off valve is one to be positioned at the rotary valve of defeated material passage, and this rotary valve comprises rotary valve and rotating shaft, and rotating shaft is fixed in defeatedly expects that rotary valve is installed on the rotating shaft on the passage.Described rotary valve is spherical, hemispherical or tabular.
Described on-off valve is a flap type, offers chute on the defeated material passage, and flap type is inserted in the chute.Offer intercommunicating pore on the described flap type.
Described controlling organization comprises driving oil cylinder and control system, drives in-oil cylinder driven plunger and links to each other with the feed supplement piston rod, and the rod chamber hydraulic fluid port that drives oil cylinder links to each other with control system with the rodless cavity hydraulic fluid port.
The discharging direction of described feed supplement cylinder or the discharging direction of feed supplement cylinder, the discharging direction of defeated material passage top discharge mouth and the feedstock direction of charging aperture parallel with the discharging direction of defeated material passage top discharge mouth are not parallel to each other.
Compared with prior art, advantage of the present invention just is:
1, the present invention is used for suppressing simple compact, with low cost, the good reliability of apparatus structure that concrete mixer mixes the impact of slurry fluid pulsation, need not change existing pair of oil cylinder feed and jib cloth technology, only in normal feeder apparatus, increase by a cover feed supplement cylinder system, realized concrete continuous-flow in the jib pipeline with lower cost, suppressed the jib vibration, reduce the jib maximum stress value, reduced phenomena of the failure such as jib fatigue, cracking;
2, the present invention is used for suppressing concrete mixer and mixes device that the slurry fluid pulsation impacts be provided with the on-off valve that is used for preventing to mix the backflow of slurry fluid between the charging aperture of feed supplement cylinder and defeated material passage, can effectively avoid the feed supplement cylinder to occur mixing the phenomenon that the slurry fluid refluxes in the course of the work, thereby guaranteed the vibration-repressing device whole reliability, prolong the service life of vibration-repressing device, also be convenient to maintenance simultaneously.
Description of drawings
Fig. 1 is the main TV structure schematic diagram of the embodiment of the invention 1;
Fig. 2 is the vertical profile structural representation of the embodiment of the invention 1;
Fig. 3 is the perspective view of the embodiment of the invention 1 section;
Fig. 4 is the schematic diagram of second kind of structure in the embodiment of the invention 1;
Fig. 5 is the schematic diagram of the third structure in the embodiment of the invention 1;
Fig. 6 is the schematic diagram of first kind of structure in the embodiment of the invention 2;
Fig. 7 is the schematic diagram of second kind of structure in the embodiment of the invention 2;
Fig. 8 is the schematic diagram of the third structure in the embodiment of the invention 2;
Fig. 9 is the schematic diagram of first kind of structure in the embodiment of the invention 3;
Figure 10 is the side-looking enlarged diagram of Fig. 9 middle plateform valve;
Figure 11 is the schematic diagram of second kind of structure in the embodiment of the invention 3;
Figure 12 is the workflow schematic diagram one of the embodiment of the invention 1;
Figure 13 is the workflow schematic diagram two of the embodiment of the invention 1
Figure 14 is the workflow schematic diagram three of the embodiment of the invention 1;
Figure 15 is the workflow schematic diagram four of the embodiment of the invention 1;
Figure 16 is the workflow schematic diagram five of the embodiment of the invention 1;
Figure 17 is the workflow schematic diagram six of the embodiment of the invention 1;
Figure 18 is the structural representation of concrete mixer;
Figure 19 is the structural representation of concrete pump truck arm.
Marginal data:
1, feed supplement cylinder
201, hyoplastron 202, hyoplastron rotating shaft
203, baffle plate 204, block
205, rotary valve 206, rotating shaft
207, intercommunicating pore 208, flap type
3, charging aperture 4, discharging opening
5, defeated material passage 6, feed supplement piston rod
7, extension spring 8, feed supplement piston
9, drive oil cylinder 10, driven plunger
11, rod chamber hydraulic fluid port 12, rodless cavity hydraulic fluid port
15, go up feeding pipe 16, following feeding pipe
22, first jib 23, second jib
24, the 3rd jib 25, the 4th jib
26, the 5th jib 27, rotating shaft
28, arm support oil cylinder 29, connecting rod
30, turntable 31, flexible pipe
The specific embodiment
Below with reference to the drawings and specific embodiments the present invention is described in further details.
Embodiment 1: as Fig. 1, Fig. 2 and shown in Figure 3, the present invention is used for suppressing concrete mixer and mixes the device that the slurry fluid pulsation impacts, it comprises defeated material passage 5, feed supplement cylinder 1 and controlling organization, feed supplement cylinder 1 keeps being communicated with defeated material passage 5, be provided with feed supplement piston 8 and feed supplement piston rod 6 in the feed supplement cylinder 1, feed supplement piston rod 6 links to each other with controlling organization, is provided with between the charging aperture 3 of feed supplement cylinder 1 and defeated material passage 5 to be used for preventing to mix the on-off valve that the slurry fluid refluxes.The internal diameter of feed supplement cylinder 1 can not seal feed supplement cylinder 1 with the internal diameter difference of charging aperture 3, discharging opening 4 during with the upset of assurance on-off valve.Defeated material passage 5 charging apertures 3 connect with the following feeding pipe 16 of concrete mixer hopper end, and discharging opening 4 connects with the last feeding pipe 15 that leads to the jib pipeline, can make the quick change flange in the joint simultaneously, is convenient to dismounting and cleans.Be provided with feed supplement piston 8 and feed supplement piston rod 6 in the feed supplement cylinder 1, feed supplement piston rod 6 links to each other with controlling organization, during the pumping system feed, the feed supplement piston 8 slow suctions of this feed supplement cylinder 1, omnidistance suction duration is equal to or is slightly less than the feed duration of pumping feeding system, during feeding system S valve is in commutation, the concrete of failing this moment in the material passage 5 stops to flow, stop the mobile jib pulsatile impact that causes in order to compensate, the feed supplement piston 8 beginning high speed feed of feed supplement cylinder 1, its feed duration roughly is equivalent to pumping system reversal interval duration, concrete is pushed the defeated material passage 5 from feed supplement cylinder 1, promote concrete from defeated material passage 5, to flow into and go up feeding pipe 15, thereby reduce even eliminate the concrete pulsation and carry the jib resonance that causes, it should be noted that the speed of service of 8 suctions of feed supplement piston and feed is not wait in the feed supplement cylinder 1, working law is slow suction, the high speed feed.In the present embodiment, on-off valve comprises hyoplastron 201 and hyoplastron rotating shaft 202, and this hyoplastron 201 is installed in the hyoplastron rotating shaft 202, hyoplastron rotating shaft 202 is fixed on feed supplement cylinder 1 or the defeated material passage 5, under the drive of hyoplastron rotating shaft 202, hyoplastron 201 is finished the operation of the defeated material of open and close passage 5 along with rotation.Hyoplastron rotating shaft 202 extends to the outside of defeated material passage 5, the hyoplastron rotating shaft 202 that is positioned at defeated material passage 5 outsides is provided with baffle plate 203, the lateral wall of defeated material passage 5 is provided with the block 204 that matches with baffle plate 203, one end of one extension spring 7 is fixed on the defeated material passage 5, and the other end links to each other with baffle plate 203 in the hyoplastron rotating shaft 202.When hyoplastron rotating shaft 202 was up rotated, extension spring 7 was tensioned, when moving to certain position, baffle plate 203 is stopped by the block 204 on the lateral wall of defeated material passage 5, hyoplastron rotating shaft 202 can't be rotated again, plays spacing effect, prevents the excessively passage of sealing feed supplement cylinder 1 of hyoplastron rotating shaft 202 rotations.At this moment, under the restoring force effect of extension spring 7, drive hyoplastron rotating shaft 202 and down rotate, finish return, extension spring 7 plays the effect of auxiliary return, in order to prevent the not enough situation of thrust that the concrete flow movable property is given birth to.
Be in the feed stroke at pumping system, feed supplement cylinder 1 is in during the suction stroke, under the pressure effect that the concrete flow movable property is given birth to, hyoplastron 201 upsets, opened the pipeline between charging aperture 3 and the discharging opening 4, do not hinder simultaneously the normal suction of feed supplement cylinder 1, so just guaranteed the normal conveying of concrete between charging aperture 3 and discharging opening 4, and the slow suction of feed supplement cylinder 1; Be in commutation and when stopping feed at pumping system, feed supplement cylinder 1 carries out feed, under the pressure effect that the concrete flow movable property is given birth to, hyoplastron 201 upsets, closed the pipeline between charging aperture 3 and the discharging opening 4, and keep being communicated with between discharging opening 3 and the feed supplement cylinder 1, the flip-flop movement of on-off valve mainly promotes by the pressure that the concrete flow movable property is given birth to.In the present embodiment, controlling organization comprises driving oil cylinder 9 and control system, and the driven plunger 10 that drive in the oil cylinder 9 link to each other with feed supplement piston rod 6, and the rod chamber hydraulic fluid port 11 that drives oil cylinder 9 links to each other with control system with rodless cavity hydraulic fluid port 12.Under the control of control system, driving oil cylinder 9 is finished the control to feed supplement cylinder 1.Referring to shown in Figure 4, in second kind of structure of present embodiment, the discharging direction of feed supplement cylinder 1 is parallel with the discharging direction of defeated material passage 5 top discharge mouths 4, and its advantage just is: when feed supplement cylinder 1 feed, and the flow resistance minimum of concrete in feeding pipe 5.Referring to shown in Figure 5, in the third structure of present embodiment, the discharging direction of the discharging direction of feed supplement cylinder 1, defeated material passage 5 top discharge mouths 4 and the feedstock direction of charging aperture 3 are not parallel to each other, its advantage just is: the outermost end position that moves to feed supplement cylinder 1 when feed supplement piston 8, during promptly near the position of on-off valve, dead angle minimum between feed supplement cylinder 1 and charging aperture 3, the discharging opening 4, concrete is residual also minimum.
Operation principle: extremely shown in Figure 17 as Figure 12, Figure 12 is the outermost end position that feed supplement piston 8 runs to feed supplement cylinder 1, at this moment, carry out feed by a pumping oil cylinder in the defeated material passage 5, concrete flow to discharging opening 4 from charging aperture 3, hyoplastron 201 is shown in an open position by the fluid impact of charging aperture 3, the 8 beginning suctions of feed supplement piston; Shown in Figure 13 is feed supplement piston 8 suction at a slow speed, and the sub-fraction concrete that flows between charging aperture 3 and discharging opening 4 is inhaled into feed supplement cylinder 1, and hyoplastron 201 is shown in an open position by the fluid impact of charging aperture 3; Shown in Figure 14 is that feed supplement piston 8 suction finishes, run to the inner terminal position of feed supplement cylinder 1, concrete in this moment defeated material passage 5 begins to switch to by another pumping oil cylinder and carries out feed, but there is a time interval, the concrete that flow to discharging opening 4 from charging aperture 3 also stops to flow, feed supplement piston 8 is prepared feed, and this process time is extremely short; Shown in Figure 15 is feed supplement piston 8 feed, this moment hyoplastron 201 be subjected to the external action of concrete fluid impact in the feed supplement cylinder 1 and return servicing unit force-closed pipeline between charging aperture 3 and the discharging opening 4, feed supplement piston 8 high speed feed, concrete flow to discharging opening 4 from feed supplement cylinder 1; Figure 16 is the outermost end position that feed supplement piston 8 has arrived feed supplement cylinder 1, this process time is also extremely short, and Figure 17 is that a pumping oil cylinder recovers feed, forms concrete pressure at close charging aperture 3 places of hyoplastron 201, rely on concrete flowing to open hyoplastron 201, enter next working cycles.
Embodiment 2: the structure of present embodiment and embodiment 1 are roughly the same, difference is: on-off valve is one to be positioned at the rotary valve of defeated material passage 5, this rotary valve comprises rotary valve 205 and rotating shaft 206, rotating shaft 206 is installed on the defeated material passage 5, rotary valve 205 is installed on the rotating shaft 206, rotary valve 205 can rotate along with rotating shaft 206, finishes the open and close to defeated material passage 5.Referring to Fig. 6 and shown in Figure 7, rotary valve 205 is hemispherical or spherical, when charging aperture 3 feed, during 8 suctions of feed supplement piston, rotary valve 205 rotates under the drive of rotating shaft 206, opens defeated material passage 5, can offer the holding part of rotary valve 205 on the madial wall of defeated material passage 5; When charging aperture 4 stopped feed, during feed supplement piston 8 feed, rotary valve 205 sealed the passage between charging aperture and the defeated material passage along with rotating shaft 206 rotates.Referring to shown in Figure 8, rotary valve 205 is a tabular, and when charging aperture 3 feed, during 8 suctions of feed supplement piston, rotary valve 205 rotates under the drive of rotating shaft 206, opens defeated material passage 5; When charging aperture 4 stopped feed, during feed supplement piston 8 feed, rotary valve 205 was failed material passage 5 for one section of sealing charging aperture 3 places along with rotating shaft 206 rotates.
Embodiment 3: the structure of present embodiment and embodiment 1 are roughly the same, and difference is: on-off valve is a flap type 208, offers chute 51 on the defeated material passage 5, and flap type 208 is inserted in the chute 51.Referring to Fig. 9 and shown in Figure 10, offer intercommunicating pore 207 on the flap type 208, flap type 208 can be free to slide in the chute 51 on the defeated material passage 5, when charging aperture 3 feed, during 8 suctions of feed supplement piston, the intercommunicating pore 207 on the flap type 208 keeps being communicated with defeated material passage 5, when charging aperture 3 stops feed, during 8 suctions of feed supplement piston, flap type 208 slides along the direction of arrow in the figure, one section defeated material passage 5 at sealing charging aperture 3 places.Referring to shown in Figure 11, flap type 208 can be free to slide in the chute 51 on the defeated material passage 5, when charging aperture 3 feed, during 8 suctions of feed supplement piston, flap type 208 withdraws from defeated material passage 5, makes defeated material passage 5 keep being communicated with, when charging aperture 3 stops feed, during 8 suctions of feed supplement piston, flap type 208 slides along the direction of arrow in the figure and pushes defeated material passage 5, one section defeated material passage 5 at sealing charging aperture 3 places.
Claims (10)
1. one kind is used for suppressing the device that concrete mixer mixes the impact of slurry fluid pulsation, it comprises defeated material passage (5), feed supplement cylinder (1) and controlling organization, feed supplement cylinder (1) keeps being communicated with defeated material passage (5), be provided with feed supplement piston (8) and feed supplement piston rod (6) in the feed supplement cylinder (1), feed supplement piston rod (6) links to each other with controlling organization, it is characterized in that: be provided with between the charging aperture (3) of described feed supplement cylinder (1) and defeated material passage (5) and be used for preventing to mix the on-off valve that the slurry fluid refluxes.
2. the device that is used for suppressing the impact of the mixed slurry of concrete mixer fluid pulsation according to claim 1, it is characterized in that: described on-off valve comprises hyoplastron (201) and hyoplastron rotating shaft (202), this hyoplastron (201) is installed in the hyoplastron rotating shaft (202), and hyoplastron rotating shaft (202) is fixed on feed supplement cylinder (1) or the defeated material passage (5).
3. the device that is used for suppressing the impact of the mixed slurry of concrete mixer fluid pulsation according to claim 2, it is characterized in that: described hyoplastron rotating shaft (202) extends to the outside of defeated material passage (5), the hyoplastron rotating shaft (202) that is positioned at defeated material passage (5) outside is provided with baffle plate (203), the lateral wall of defeated material passage (5) is provided with the block (204) that matches with baffle plate (203), one end of one extension spring (7) is fixed on the defeated material passage (5), and the other end links to each other with baffle plate (203) in the hyoplastron rotating shaft (202).
4. the device that is used for suppressing the impact of the mixed slurry of concrete mixer fluid pulsation according to claim 1, it is characterized in that: described on-off valve is one to be positioned at the rotary valve of defeated material passage (5), this rotary valve comprises rotary valve (205) and rotating shaft (206), rotating shaft (206) is fixed on the defeated material passage (5), and rotary valve (205) is installed on the rotating shaft (206).
5. according to claim 4 being used for suppressed the device that concrete mixer mixes the impact of slurry fluid pulsation, and it is characterized in that: described rotary valve (205) is hemispherical, spherical or tabular.
6. the device that is used for suppressing the impact of the mixed slurry of concrete mixer fluid pulsation according to claim 1, it is characterized in that: described on-off valve is flap type (208), offer chute (51) on the defeated material passage (5), flap type (208) is inserted in the chute (51).
7. according to claim 6 being used for suppressed the device that concrete mixer mixes the impact of slurry fluid pulsation, it is characterized in that: offer intercommunicating pore (207) on the described flap type (208).
8. according to each described device that is used for suppressing the impact of the mixed slurry of concrete mixer fluid pulsation in the claim 1 to 7, it is characterized in that: described controlling organization comprises driving oil cylinder (9) and control system, the driven plunger (10) that drives in the oil cylinder (9) links to each other with feed supplement piston rod (6), and the rod chamber hydraulic fluid port (11) that drives oil cylinder (9) links to each other with control system with rodless cavity hydraulic fluid port (12).
9. according to each describedly is used for suppressing concrete mixer and mixes device that the slurry fluid pulsation impacts in the claim 1 to 7, it is characterized in that: the discharging direction of the discharging direction of described feed supplement cylinder (1) or feed supplement cylinder (1) parallel, defeatedly expect that the discharging direction of passage (5) top discharge mouth (4) and the feedstock direction of charging aperture (3) are not parallel to each other with the discharging direction of defeated material passage (5) top discharge mouth (4).
10. according to claim 8ly be used for suppressing concrete mixer and mix the device that the slurry fluid pulsation impacts, it is characterized in that: the discharging direction of the discharging direction of described feed supplement cylinder (1) or feed supplement cylinder (1) parallel, defeatedly expect that the discharging direction of passage (5) top discharge mouth (4) and the feedstock direction of charging aperture (3) are not parallel to each other with the discharging direction of defeated material passage (5) top discharge mouth (4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100325545A CN1951657B (en) | 2006-11-10 | 2006-11-10 | Device for suppressing pulsated impact of slurry flow in concrete pump vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100325545A CN1951657B (en) | 2006-11-10 | 2006-11-10 | Device for suppressing pulsated impact of slurry flow in concrete pump vehicle |
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| CN1951657A CN1951657A (en) | 2007-04-25 |
| CN1951657B true CN1951657B (en) | 2010-04-14 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297312B (en) * | 2011-06-28 | 2013-01-09 | 北京市三一重机有限公司 | Mechanism for lowering fluid pulse impact, double-cylinder reversing pumping system and concrete pump |
| CN102995898B (en) * | 2012-12-06 | 2015-09-02 | 中联重科股份有限公司 | Proportioner, proportioner control appliance, method, system and engineering machinery |
| CN104912784B (en) * | 2015-05-15 | 2017-05-03 | 中联重科股份有限公司 | Material pumping pressure adjusting device and method of double-cylinder pumping equipment and pumping equipment |
| CN108382622A (en) * | 2018-05-29 | 2018-08-10 | 天津时光利康科技有限公司 | The metering structure for conveying and packet cream machine of packet cream machine |
| CN109282090B (en) * | 2018-11-25 | 2021-08-03 | 中建二局第二建筑工程有限公司 | Pipeline valve capable of automatically compensating abrasion clearance for concrete conveying pump for building |
| CN112325041A (en) * | 2019-08-16 | 2021-02-05 | 南阳理工学院 | Turbulent suppressing device suitable for pipeline fluid |
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2584872Y (en) * | 2002-12-19 | 2003-11-05 | 赵邵武 | Float sealing sluice valve for reciprocating piston transfer pump |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2584872Y (en) * | 2002-12-19 | 2003-11-05 | 赵邵武 | Float sealing sluice valve for reciprocating piston transfer pump |
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Owner name: SANY AUTOMOBILE MANUFACTURING CO., LTD. Free format text: FORMER OWNER: SANYI HEAVY INDUSTRY CO LTD Effective date: 20130502 |
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Effective date of registration: 20130502 Address after: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee after: SANY Automobile Manufacturing Co., Ltd. Address before: 410100 31 industrial city, Changsha economic and Technological Development Zone, Hunan, Changsha Patentee before: Sanyi Heavy Industry Co., Ltd. |