CN103015724A - Device and method for safely controlling pumping material level of concrete as well as concrete pumping equipment - Google Patents
Device and method for safely controlling pumping material level of concrete as well as concrete pumping equipment Download PDFInfo
- Publication number
- CN103015724A CN103015724A CN2012105842914A CN201210584291A CN103015724A CN 103015724 A CN103015724 A CN 103015724A CN 2012105842914 A CN2012105842914 A CN 2012105842914A CN 201210584291 A CN201210584291 A CN 201210584291A CN 103015724 A CN103015724 A CN 103015724A
- Authority
- CN
- China
- Prior art keywords
- signal
- level sensor
- pumping
- material level
- concrete pumping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention provides a device and method for safely controlling pumping material level of concrete as well as concrete pumping equipment. The device for safely controlling pumping material level of concrete comprises a first material level sensor, a second material level sensor and a controller, wherein the first material level sensor sends a first signal when material reaches a first position and is contacted with the first material level sensor; the second material level sensor sends a second signal when the material reaches a second position and is contacted with the second material level sensor; the first position is lower than the second position; and the controller is electrically connected with the first material level sensor and the second material level sensor. If the current working condition is in a start state, and the second signal is received, the controller sends a pumping starting signal; and when the current working condition is in the start state and the second signal is not received, the controller does not send a pumping starting signal. According to the invention, only when the material level is higher than or as high as the second position, the pumping starting signal can be generated, so that pumping is not required to be started or stopped frequently.
Description
Technical field
The present invention relates to the concrete pumping field, more specifically, relate to a kind of concrete pumping material level safety control, method and concrete pumping equipment.
Background technology
Pumping equipment of the prior art normally arranges the first critical material level and the second critical material level, and wherein, the first critical material level is lower than the second critical material level, and material level is between these two material levels, to prevent to inhale empty problem.Further, as long as material level is between these two material levels, will start pumping so.
Like this, material level is fallen back to rapidly below the first critical material level, so concrete pumping equipment stops pumping after detecting this situation.Then, adding material in the hopper, after a bit of time, material level surpasses again the first critical material level, so concrete pumping equipment begins again pumping.So circulation can cause the frequent starting pumping and stop pumping, and causes inhaling empty phenomenon.
Summary of the invention
The present invention aims to provide and a kind ofly prevents the frequent starting pumping and stop pumping, avoids inhaling concrete pumping material level safety control, method and the concrete pumping equipment that empty problem occurs.
For solving the problems of the technologies described above, according to a first aspect of the invention, provide a kind of concrete pumping material level safety control, comprising: the first level sensor, send first signal when contacting in material arrival primary importance and with the first level sensor; The second level sensor sends secondary signal when contacting in the material arrival second place and with the second level sensor, and primary importance is lower than the second place; And controller, be electrically connected with the first level sensor and the second level sensor; If current working is starting state and receives secondary signal, then controller sends and starts the pumping signal; If current working is starting state but do not receive secondary signal, then controller does not send and starts the pumping signal.
Further, it is characterized in that, if current working is running status, but do not receive first signal and secondary signal, then controller sends and stops the pumping signal.
Further, if current working is running status, and receive first signal, then controller sends and keeps the pumping signal.
Further, the first level sensor comprises insulation sleeve and steel core, and insulation sleeve is enclosed within on the steel core, and the end of steel core gives prominence in the outside of insulation sleeve to form the first detection head, thereby material contacts with the first detection head and produces first signal.
Further, the second level sensor has the structure identical with the first level sensor.
Further, insulation sleeve is ceramic jacket.
Further, concrete pumping material level safety control also comprises: installing mechanism, installing mechanism comprises mount pad, support and fishbolt, mount pad is connected with the first end of support, and support comprises first and the second portion that is set gradually to the direction of the second end of support by the first end of support; Be provided with vertical groove and two installation of sensors holes that vertically arrange on the second portion, groove is extended to the direction of the first end of support by the second end of support, and groove runs through two installation of sensors holes and second portion is divided into the first intermediate plate and the second intermediate plate; The first intermediate plate be connected intermediate plate and connected by fishbolt in the horizontal direction; The first level sensor and the second level sensor are clamped in respectively in the installation of sensors hole by fishbolt.
Further, concrete pumping material level safety control also comprises enable switch, is connected with controller, is used for controlling the unlatching of controller or closing.
According to a second aspect of the invention, a kind of concrete pumping equipment is provided, comprise hopper and the concrete pumping material level safety control that is installed on the hopper inwall, this concrete pumping material level safety control is above-mentioned concrete pumping material level safety control.
According to a third aspect of the present invention, provide a kind of concrete pumping material level method of controlling security, having comprised: the first level sensor is provided, sends first signal when contacting in material arrival primary importance and with the first level sensor; The second level sensor is provided, sends secondary signal when contacting in the material arrival second place and with the second level sensor, wherein, primary importance is lower than the second place; If current working is starting state and receives secondary signal, then starts pumping; If current working is starting state and does not receive secondary signal, then do not start pumping.
Further, if current working is running status, but do not receive first signal and secondary signal, then stop pumping.
Further, if current working is running status, and receive first signal, then keep pumping.
Further, provide the first level sensor with insulation sleeve and steel core, insulation sleeve is enclosed within on the steel core, and make the end of steel core give prominence in the outside of insulation sleeve to form the first detection head, thereby material contacts with the first detection head and produces first signal.
Further, insulation sleeve is made with ceramic materials.
The present invention is only at material level during more than or equal to the second place, just can generate to start the pumping signal.Like this, between primary importance and the second place, also store enough materials for pumping, and the material that pumping consumes can be replenished in time.Therefore, material can not be depleted to the degree that is lower than primary importance soon, therefore, can the frequent starting pumping and stop pumping, thus avoided pump to inhale empty problem, also avoided the significant vibration of the jib of concrete pumping equipment.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the use state diagram of the concrete pumping material level safety control among the present invention;
Fig. 2 has schematically shown the front view of installing mechanism;
Fig. 3 has schematically shown the top view of Fig. 2; And
Fig. 4 has schematically shown the circuit connecting relation figure among the present invention.
Reference numeral among the figure: 10, the first level sensor; 11, the first detection head; 12, insulation sleeve; 13, steel core; 20, the second level sensor; 21, the second detection head; 30, installing mechanism; 31, mount pad; 32, support; 33, fishbolt; 34, groove; 35, installation of sensors hole; 36, the first intermediate plate; 37, the second intermediate plate; 40, hopper; 50, controller; 60, pumping electromagnetic valve; 70, enable switch.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As a first aspect of the present invention, please refer to Fig. 1, a kind of concrete pumping material level safety control is provided, comprising: the first level sensor 10, send first signal when contacting in material arrival primary importance and with the first level sensor 10; The second level sensor 20 sends secondary signal when contacting in the material arrival second place and with the second level sensor 20, and primary importance is lower than the second place; With controller 50, be electrically connected with the first level sensor 10 and the second level sensor 20; If current working is starting state and receives secondary signal, then controller 50 sends and starts the pumping signal; If current working is starting state but do not receive secondary signal, then controller 50 does not send and starts the pumping signal.
When the first level sensor 10 contacted with material, the first level sensor 10 sent first signal; When the second level sensor 20 contacted with material, the second level sensor 20 sent secondary signal.That is to say, when controller 50 is received first signal, show material level more than or equal to primary importance, when not receiving first signal, show that material level is lower than primary importance; When controller 50 is received secondary signal, show material level more than or equal to the second place, when not receiving secondary signal, show that material level is lower than the second place.After generating startup pumping signal, concrete pumping equipment can enter the pumping state by non-pumping state, starts the pumping signal if generate, and then remains on non-pumping state.
The present invention is only at material level during more than or equal to the second place, just can generate to start the pumping signal.Like this, between primary importance and the second place, also store enough materials for pumping, and the material that pumping consumes can be replenished in time.Therefore, material can not be depleted to the degree that is lower than primary importance soon, therefore, can the frequent starting pumping and stop pumping, thus avoided pump to inhale empty problem, also avoided the significant vibration of the jib of concrete pumping equipment.
Make the first level sensor 10 be in different height with the second level sensor 20, can avoid material level to cause the detection signal of level sensor output that the phenomenon of vibration occurs in critical condition, compare with the scheme that only adopts a level sensor, have higher precision and reliability.In addition, the present invention can realize detection to material level by the first level sensor and the second level sensor, do not need the manual observation material level, therefore, and the height by the mode direct-detection material level that contacts with material, can detect in real time material level reliably, in time find the situation of material deficiency, avoided operating personnel can only control by rule of thumb the situation of pumping, time-consuming when having solved in the prior art material level control, effort, insecure problem.
Preferably, if current working is running status, but do not receive first signal and secondary signal, then controller 50 sends and stops the pumping signal.At this moment, material level is lower than primary importance, and namely material is not enough, stops the pumping signal so that concrete pumping equipment stops pumping so generate.
Preferably, if current working is running status, and receive first signal, then controller 50 sends and keeps the pumping signal.When running status, as long as receive first signal (no matter whether receiving secondary signal), show that all material level is greater than or equal to primary importance, keep the pumping signal so generate, like this, concrete pumping equipment is kept running status, and continues pumping.
Preferably, the first level sensor 10 comprises insulation sleeve 12 and steel core 13, and insulation sleeve 12 is enclosed within on the steel core 13, and the end of steel core 13 gives prominence in the outside of insulation sleeve 12 to form the first detection head 11, thereby material contacts with the first detection head 11 and produces first signal.Wherein, insulation sleeve 12 can make the containers such as steel core 13 and hopper keep insulation, so that have different current potentials between the container such as hopper and the steel core 13.Because material is placed in the container such as hopper, therefore, the containers such as material and hopper have identical current potential, when material contacts with the end of steel core 13, will make steel core 13 have the current potential identical with containers such as material, hoppers, thus the generation first signal.Preferably, the second level sensor 20 has the structure identical with the first level sensor 10.Preferably, insulation sleeve 12 is ceramic jackets.Certainly, insulation sleeve 12 also can be made by other insulation materials, such as plastics etc.
Especially, because the car load crossbeam of bucket wall and concrete pumping equipment is in same current potential, i.e. storage battery negative pole, at this moment, controller can detect a negative level signal (first signal or secondary signal).As seen, this negative level signal generating mode is simple and stable, be difficult for being interfered and fluctuate, therefore, improved system reliability, reduced fault rate.
Preferably, please refer to Fig. 1 to Fig. 3, concrete pumping material level safety control also comprises: installing mechanism 30, installing mechanism 30 comprises mount pad 31, support 32 and fishbolt 33, mount pad 31 is connected with the first end of support 32, and support 32 comprises first and the second portion that is set gradually to the direction of the second end of support 32 by the first end of support 32; Be provided with vertical groove 34 and two installation of sensors holes 35 that vertically arrange on the second portion, groove 34 is extended to the direction of the first end of support 32 by the second end of support 32, and groove 34 runs through two installation of sensors holes 35 and second portion is divided into the first intermediate plate 36 and the second intermediate plate 37; The first intermediate plate 36 be connected intermediate plate 37 and connected by fishbolt 33 in the horizontal direction; The first level sensor 10 and the second level sensor 20 are clamped in respectively in the installation of sensors hole 35 by fishbolt 33.Especially, mount pad 31 is the installing plate with respect to the axioversion setting of support 32, because mount pad 31 is obliquely installed, therefore, when installing, can adapt to the shape of hopper inwall, makes support 32 be positioned at level.
During installation, the first level sensor 10 and the second level sensor 20 are inserted respectively in the installation of sensors hole 35, then tighten fishbolt 33.Owing to having groove 34 between the first intermediate plate 36 and the second intermediate plate 37, therefore, the first intermediate plate 36 and the second intermediate plate 37 can be to the direction motions of mutually drawing close.Thereby the first level sensor 10 and the second level sensor 20 are clamped between the first intermediate plate 36 and the second intermediate plate 37 reliably.
When needs detect different material levels, fishbolt 33 can be unclamped, the first level sensor 10 and the second level sensor 20 are moved up or down, and again by fishbolt 33 it is fixedly clamped again, just can regulate easily the setting height(from bottom) of the first detection head 11 and the second detection head 21.Like this, can realize the control to different material levels, to satisfy the requirement of different hoppers, different pumping systems, have adaptable characteristics.
Preferably, the material level safety control also comprises enable switch 70, is connected with controller 50, is used for controlling the unlatching of controller 50 or closing.When enable switch 70 was opened, controller 50 can the normal response first signal, secondary signal etc., can normally control the operation of pay-off.When enable switch 70 is closed, no longer any signal is produced response, also no longer any control is carried out in pumping.
As a second aspect of the present invention, a kind of concrete pumping equipment is provided, comprise hopper 40 and the concrete pumping material level safety control that is installed on hopper 40 inwalls, this concrete pumping material level safety control is above-mentioned concrete pumping material level safety control.
Preferably, the material level safety control is connected with the inwall of hopper 40 by the mount pad 31 of its installing mechanism 30.Preferably, mount pad 31 is connected with the inwall of hopper 40 by bolt etc.At this moment, the first level sensor 10 and the second level sensor 20 all vertically are installed on the support 32, and only the first level sensor 10 is different from the height of the free end (i.e. the first detection head 11 and the second detection head 21) of the second level sensor 20.Preferably, concrete pumping equipment can be concrete mixer etc.
Especially, material, i.e. concrete is sent in the hopper 40 by truck-transit mixer etc., because concrete directly contacts with the inwall of hopper 40, therefore, concrete has the current potential identical with hopper 40.In addition, owing to hopper 40 is installed on the car load, and car load has the current potential identical with the negative pole of battery, and hopper 40 and interior concrete thereof have the stable current potential identical with the negative pole of battery.When concrete contacts with the first detection head 11 or the second detection head 21, will make the first detection head 11 or the second detection head 21 have the current potential identical with the negative pole of battery, so produce first signal or secondary signal.Therefore, first signal and secondary signal are one to be stablized and reliable low level signal, can not be subject to outside interference, has improved the accuracy of the reliability of control.With respect to the equidistant detection scheme of ultrasonic wave, the level of direct-detection material of the present invention, more direct, more reliable, more accurate.
Below with reference to Fig. 4 the course of work of the concrete pumping equipment of the material level safety control among use the present invention is elaborated.
When the 3rd input terminal IN03 without when input (enabling switch 70 disconnects), at this moment, the material level safety control function of controller 50 is closed, and pump action is not done any restriction.
2. (enable switch 70 closures) when the 3rd input terminal IN03 has input, the material level safety control function of controller 50 is opened:
(1) if be in starting state:
If a. the sub-IN01 of first input end and the second input terminal IN02 all without input or the sub-IN01 of first input end input is arranged but the second input terminal IN02 without input, the expression material level is lower than the position of the second detection head 21 of the second level sensor 20.In this case, the output of the lead-out terminal no signal of the control pumping electromagnetic valve 60 of controller 50 is without pump action;
If b. the sub-IN01 of first input end and the second input terminal IN02 all have input, the expression material level is higher than the position of the second detection head 21, the lead-out terminal of the control pumping electromagnetic valve 60 of controller 50 has signal output so, so, begin action by the 60 control pumpings of pumping electromagnetic valve.
(2) be in running status (namely having begun pumping):
If a. the sub-IN01 of first input end and the second input terminal IN02 all have input, perhaps the sub-IN01 of first input end have the input and the second input terminal IN02 without input, be illustrated in the pumping procedure position that material level in the hopper is higher than the first detection head 11, controller 50 control pumping electromagnetic valves 60 are kept pump action;
If b. the sub-IN01 of first input end and the second input terminal IN02I all without input, are illustrated in the pumping procedure, material level has been lower than the position of the first detection head 11 in the hopper, and controller 50 control pumping electromagnetic valves 60 stop pump action.Further, after pumping stopped, only when material level was higher than the position (being that the sub-IN01 of first input end and the second input terminal IN02I all have input) of the second detection head 21 again, controller 50 just can send signal and recover pump action.
Compared with prior art, the present invention has realized the Real-Time Monitoring to material level in the hopper, and passes through controller 50 realizations to automatic, the Based Intelligent Control of pumping, has simple, efficient, reliable characteristics, can prevent effectively that the situation of pumping suction sky from occuring.
As a third aspect of the present invention, a kind of concrete pumping material level method of controlling security is provided, comprising: the first level sensor 10 is provided, sends first signal when contacting in material arrival primary importance and with the first level sensor 10; The second level sensor 20 is provided, sends secondary signal when contacting in the material arrival second place and with the second level sensor 20, wherein, primary importance is lower than the second place; If current working is starting state and receives secondary signal, then starts pumping; If current working is starting state and does not receive secondary signal, then do not start pumping.
The present invention only during more than or equal to the second place, just can start pumping at material level.Like this, between primary importance and the second place, also store enough materials for pumping, and the material that pumping consumes can be replenished in time.Therefore, material can not be depleted to the degree that is lower than primary importance soon, therefore, can not cause the frequent starting pumping and stop pumping, thereby avoid pump to inhale empty problem, has avoided the significant vibration of the jib of concrete pumping equipment yet.
Preferably, if current working is running status, but do not receive first signal and secondary signal, then stop pumping.
Preferably, if current working is running status, and receive first signal, then keep pumping.
Preferably, the first level sensor 10 with insulation sleeve 12 and steel core 13 is provided, insulation sleeve 12 is enclosed within on the steel core 13, and makes the end of steel core 13 give prominence in the outside of insulation sleeve 12 to form the first detection head 11, thereby material contacts with the first detection head 11 and produces first signal.
Preferably, insulation sleeve 12 usefulness ceramic materialss are made.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a concrete pumping material level safety control is characterized in that, comprising:
The first level sensor (10) arrives primary importance and sends first signal when contacting with described the first level sensor (10) at material;
The second level sensor (20) arrives the second place and sends secondary signal when contacting with described the second level sensor (20) at material, and described primary importance is lower than the described second place; With
Controller (50) is electrically connected with described the first level sensor (10) and described the second level sensor (20); If current working is starting state and receives described secondary signal, then described controller (50) sends and starts the pumping signal; If current working is starting state but do not receive described secondary signal, then described controller (50) does not send described startup pumping signal.
2. concrete pumping material level safety control according to claim 1 is characterized in that, if described current working is running status, but does not receive described first signal and described secondary signal, and then described controller (50) sends and stops the pumping signal.
3. concrete pumping material level safety control according to claim 1 is characterized in that, if described current working is running status, and receives described first signal, and then described controller (50) sends and keeps the pumping signal.
4. concrete pumping material level safety control according to claim 1, it is characterized in that, described the first level sensor (10) comprises insulation sleeve (12) and steel core (13), described insulation sleeve (12) is enclosed within on the described steel core (13), and the end of described steel core (13) gives prominence in the outside of described insulation sleeve (12) to form the first detection head (11), described material with described the first detection head (11) thus contact and produce described first signal.
5. concrete pumping material level safety control according to claim 4 is characterized in that, described the second level sensor (20) has the structure identical with described the first level sensor (10).
6. concrete pumping material level safety control according to claim 4 is characterized in that, described insulation sleeve (12) is ceramic jacket.
7. concrete pumping material level safety control according to claim 1 is characterized in that, described concrete pumping material level safety control also comprises:
Installing mechanism (30), described installing mechanism (30) comprises mount pad (31), support (32) and fishbolt (33), described mount pad (31) is connected with the first end of described support (32), and described support (32) comprises first and the second portion that is set gradually to the direction of the second end of described support (32) by the first end of described support (32);
Be provided with vertical groove (34) and two installation of sensors holes (35) that vertically arrange on the described second portion, described groove (34) is extended to the direction of the first end of described support (32) by the second end of described support (32), and described groove (34) runs through described two installation of sensors holes (35) and described second portion is divided into the first intermediate plate (36) and the second intermediate plate (37); Described the first intermediate plate (36) be connected intermediate plate (37) and connected by described fishbolt (33) in the horizontal direction;
Described the first level sensor (10) and described the second level sensor (20) are clamped in respectively in the described installation of sensors hole (35) by described fishbolt (33).
8. concrete pumping material level safety control according to claim 1, it is characterized in that, described concrete pumping material level safety control also comprises enable switch (70), is connected with described controller (50), is used for controlling the unlatching of described controller (50) or closing.
9. concrete pumping equipment, comprise hopper (40) and be installed in concrete pumping material level safety control on described hopper (40) inwall, it is characterized in that, described concrete pumping material level safety control is the concrete pumping material level safety control that each is stated in the claim 1 to 8.
10. a concrete pumping material level method of controlling security is characterized in that, comprising:
The first level sensor (10) is provided, arrives primary importance and send first signal when contacting with described the first level sensor (10) at material;
The second level sensor (20) is provided, arrives the second place and send secondary signal when contacting with described the second level sensor (20) at material, wherein, described primary importance is lower than the described second place;
If current working is starting state and receives described secondary signal, then starts pumping; If current working is starting state and does not receive described secondary signal, then do not start pumping.
11. concrete pumping material level method of controlling security according to claim 10 is characterized in that, if described current working is running status, but does not receive described first signal and described secondary signal, then stops pumping.
12. concrete pumping material level method of controlling security according to claim 10 is characterized in that, if described current working is running status, and receives and then keeps pumping by described first signal.
13. concrete pumping material level method of controlling security according to claim 10, it is characterized in that, described first level sensor (10) of have insulation sleeve (12) and steel core (13) is provided, described insulation sleeve (12) is enclosed within on the described steel core (13), and the end that makes described steel core (13) gives prominence in the outside of described insulation sleeve (12) to form the first detection head (11), described material with described the first detection head (11) thus contact and produce described first signal.
14. concrete pumping material level method of controlling security according to claim 13 is characterized in that, described insulation sleeve (12) is made with ceramic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210584291.4A CN103015724B (en) | 2012-12-28 | 2012-12-28 | Device and method for safely controlling pumping material level of concrete as well as concrete pumping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210584291.4A CN103015724B (en) | 2012-12-28 | 2012-12-28 | Device and method for safely controlling pumping material level of concrete as well as concrete pumping equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103015724A true CN103015724A (en) | 2013-04-03 |
| CN103015724B CN103015724B (en) | 2015-04-01 |
Family
ID=47964781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210584291.4A Active CN103015724B (en) | 2012-12-28 | 2012-12-28 | Device and method for safely controlling pumping material level of concrete as well as concrete pumping equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103015724B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111493791A (en) * | 2020-04-02 | 2020-08-07 | 佛山市顺德区美的洗涤电器制造有限公司 | Control method of home appliance, and computer-readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002274653A (en) * | 2001-03-19 | 2002-09-25 | Ishikawajima Constr Mach Co | Concrete amount in hopper indicating device of concrete pump vehicle |
| CN2768699Y (en) * | 2005-02-18 | 2006-04-05 | 孙德修 | Drill bushing fixing device for orthopedics |
| CN101725517A (en) * | 2009-12-21 | 2010-06-09 | 三一重工股份有限公司 | Pump displacement control system, pump displacement control method and concrete pump |
| CN102230336A (en) * | 2011-04-08 | 2011-11-02 | 三一重工股份有限公司 | Collaborative operation system and method, concrete pumping apparatus and agitating truck |
| CN102493649A (en) * | 2011-11-16 | 2012-06-13 | 山推楚天工程机械有限公司 | Pumping feeding matching system |
-
2012
- 2012-12-28 CN CN201210584291.4A patent/CN103015724B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002274653A (en) * | 2001-03-19 | 2002-09-25 | Ishikawajima Constr Mach Co | Concrete amount in hopper indicating device of concrete pump vehicle |
| CN2768699Y (en) * | 2005-02-18 | 2006-04-05 | 孙德修 | Drill bushing fixing device for orthopedics |
| CN101725517A (en) * | 2009-12-21 | 2010-06-09 | 三一重工股份有限公司 | Pump displacement control system, pump displacement control method and concrete pump |
| CN102230336A (en) * | 2011-04-08 | 2011-11-02 | 三一重工股份有限公司 | Collaborative operation system and method, concrete pumping apparatus and agitating truck |
| CN102493649A (en) * | 2011-11-16 | 2012-06-13 | 山推楚天工程机械有限公司 | Pumping feeding matching system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111493791A (en) * | 2020-04-02 | 2020-08-07 | 佛山市顺德区美的洗涤电器制造有限公司 | Control method of home appliance, and computer-readable storage medium |
| CN111493791B (en) * | 2020-04-02 | 2021-04-20 | 佛山市顺德区美的洗涤电器制造有限公司 | Control method of home appliance, and computer-readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103015724B (en) | 2015-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180364291A1 (en) | Electronic device | |
| CN102009883B (en) | Position detector for elevator cage | |
| CN105262908A (en) | Terminal falling-overboard protection method and system | |
| CN205538070U (en) | Electronic equipment and detecting system entries thereof | |
| CN208423908U (en) | A kind of charging pile | |
| CN104238601A (en) | Air cooling type hydrogen fuel stand-by power monitoring system | |
| CN104252183A (en) | Centralized water supply remote monitoring system | |
| CN103015724A (en) | Device and method for safely controlling pumping material level of concrete as well as concrete pumping equipment | |
| CN105572593A (en) | Device and method for battery in-position detection, and charging system | |
| CN208834192U (en) | The temperature controller of defeated well is mixed in oil field, defeated well system is mixed in oil field | |
| CN203962360U (en) | The automatic control of pump electronic water level switch | |
| CN212275920U (en) | UPS power supply discharge detection device and system | |
| CN208782522U (en) | Charging pile with immersion defencive function | |
| CN210003048U (en) | Full-automatic electric control locking type safe deposit box inner box and safe deposit box control system | |
| CN203838850U (en) | Anti-line touching device for transmission line | |
| CN205032838U (en) | Liquid level detection of plasma cutting machine liquid cooling system device | |
| CN217606075U (en) | Power-on transfer mechanism device | |
| CN217761411U (en) | Underground monitoring well capable of being remotely managed | |
| CN204790606U (en) | Circuit based on capacitive sensor prevents undulant shock of material level | |
| CN203230597U (en) | Intelligent water-level automatic detecting device | |
| CN204638222U (en) | A kind of liquid-transfering needle and liquid shifting equipment | |
| CN103576580B (en) | It prevents top from driving hanging ring and touches extension monkey bench control system | |
| CN205910270U (en) | Electric power system detects communication system | |
| CN217403567U (en) | Fuel early warning device and operation machinery | |
| CN204669002U (en) | There is the USB charge connector of automatic circuit break function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |