WO2013013403A1 - 混凝土泵送设备及其控制方法和装置 - Google Patents
混凝土泵送设备及其控制方法和装置 Download PDFInfo
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- WO2013013403A1 WO2013013403A1 PCT/CN2011/077700 CN2011077700W WO2013013403A1 WO 2013013403 A1 WO2013013403 A1 WO 2013013403A1 CN 2011077700 W CN2011077700 W CN 2011077700W WO 2013013403 A1 WO2013013403 A1 WO 2013013403A1
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- Prior art keywords
- pumping
- pump
- preset
- concrete
- concrete pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
Definitions
- the present invention relates to the field of concrete pumping equipment, and in particular to a concrete pumping apparatus and a control method and apparatus therefor.
- BACKGROUND OF THE INVENTION During the construction process, a large amount of concrete needs to be transported and poured.
- the conventional construction method uses a trolley, a tower crane, etc., but these methods have obviously not met the requirements of modern engineering construction.
- the concrete pumping construction method has the advantages of high efficiency, good quality and low labor intensity, and is widely used in modern engineering construction.
- Concrete pumping equipment generally consists of the following parts: Pumping hydraulic system: Driving the pumping cylinder, controlling the direction and speed of the pumping cylinder; Distributing the hydraulic system: Driving the distribution mechanism, controlling the commutation of the distribution mechanism; Stirring hydraulic system: Drive Stirring mechanism.
- the conveying distance of the concrete pump depends on the outlet pressure of the concrete pump. When the pressure is high, the conveying distance is long. When the pressure is low, the conveying distance is short. Due to the increasing complexity of concrete conditions and the increasing use of high-strength concrete, the pressure requirements on the concrete pump's outlet pressure are different when the concrete pump is started. In order to change the outlet pressure of the concrete pump, it is generally achieved by high and low pressure switching of the pumping hydraulic system.
- the ways to achieve high and low voltage conversion can be basically divided into three types: one is to change the hose to achieve high and low pressure conversion; the other is to use the rotary oil block cover to change the oil passage communication relationship to achieve high and low voltage conversion. Another is to use six cartridge valves and an electromagnetic reversing valve to achieve electronically controlled high and low voltage conversion.
- the electronic control method has become a mainstream conversion method because of its simple operation and no oil leakage during the conversion process.
- the existing electronic control mode realizes high and low voltage conversion, it is generally controlled by the operator according to the concrete condition through the electrical switch. If the material condition is good, the low pressure pumping is used; if the material condition is poor, the friction of the concrete when passing through the pipeline The force is also large, so if more pumping pressure is needed to drive, high pressure pumping is used. If there is no manual conversion throughout the pumping operation, the same pumping state is maintained.
- a primary object of the present invention is to provide a concrete pumping apparatus and a control method and apparatus therefor to solve the problem of improper control of concrete pumping equipment when starting pumping.
- a method of controlling a concrete pumping apparatus is provided.
- the control method of the concrete pumping apparatus comprises: detecting a preset pumping state of the first pumping of the concrete pump when the first pumping of the concrete pump is started; and a preset pumping state of the first pumping When pumping for low pressure, detecting whether the working parameter of the second pumping is greater than a preset working parameter value and/or detecting whether the waiting time of the concrete pump is greater than a preset waiting time value, wherein the second pumping is the first pumping The previous pumping; when the working parameter is greater than the preset working parameter value and/or the concrete pump's waiting time is greater than the preset waiting time value, the controlled concrete pump is sent from the low pressure pump to the high pressure pumping conversion; and when the concrete pump is When the high-pressure pumping work is performed for the first preset time, the control concrete pump is sent from the high-pressure pump to the low-pressure pump.
- detecting whether the second pumped operating parameter is greater than the preset operating parameter value comprises: detecting whether the pumping pressure of the second pumping is greater than the pumping pressure value. Further, detecting whether the second pumping operating parameter is greater than the preset working parameter value comprises: detecting whether the second pumping stirring pressure is greater than a preset stirring pressure value.
- control method of the concrete pumping apparatus further includes: detecting a first pumping preset positive and negative pump state when the first pumping is started; and when the first pumping of the preset positive and negative pump
- the state is reverse pumping, if the preset pumping state of the first pumping is low pressure pumping, the control concrete pump is sent from the low pressure pump to the high pressure pumping conversion, when the concrete pump is pumped according to the high pressure pumping work for the second preset time, The control concrete pump is sent from the high pressure pump to the low pressure pump. If the preset pumping state of the first pump is high pressure pumping, the control concrete pump is sent from the high pressure pump to the low pressure pump.
- the control method of the concrete pumping apparatus further includes: after the concrete pump is sent from the low pressure pump to the high pressure pumping, if the first preset pumping speed is greater than the second preset pumping speed, the concrete pump is controlled Pumping according to a second preset pumping speed; and if the first preset pumping speed is less than or equal to the second preset pumping speed, the control concrete pump is pumped according to the first preset pumping speed, wherein, the first pre- The pumping speed is the pumping speed set by the concrete pump during low pressure pumping, and the second preset speed is the maximum pumping speed set by the concrete pump during high pressure pumping.
- a control device for a concrete pumping apparatus comprises: a first detecting module, configured to detect a preset pumping state of the first pumping of the concrete pump when the first pumping of the concrete pump is started; the second detecting module And when the preset pumping state of the first pumping is low pressure pumping, detecting whether the working parameter of the second pumping is greater than a preset working parameter value, wherein the second pumping is the first pumping of the first pumping
- the sending, and/or the third detecting module is configured to detect whether the waiting time of the concrete pump is greater than a preset waiting time value when the preset pumping state of the first pumping is low pressure pumping; the first control module, For controlling the concrete pump to be transferred from the low pressure pump to the high pressure pump when the working parameter is greater than the preset working parameter value, and/or the second control module is used when the waiting time of the concrete pump is greater than
- the second detecting module includes: a first detecting submodule, configured to detect whether the pumping pressure of the second pumping is greater than a preset pumping pressure value. Further, the second detecting module includes: a second detecting submodule, configured to detect whether the second pumping stirring pressure is greater than a preset stirring pressure value.
- the control device of the concrete pumping device further includes: a fourth detecting module, configured to detect a first pumping preset positive and negative pump state when the first pumping is started; and a fourth control module, configured to: When the preset positive and negative pump status is reverse pumping, if the preset pumping state of the first pumping is low pressure pumping, the control concrete pump is sent from the low pressure pump to the high pressure pumping conversion, when the concrete pump is operated according to the high pressure pumping At the preset time, the control concrete pump is sent from the high pressure pump to the low pressure pump. If the preset pumping state of the first pumping is high pressure pumping, the control concrete pump is sent from the high pressure pump to the low pressure pumping conversion.
- the concrete pump When the pump is pumped for a third preset time according to low pressure, the concrete pump is controlled to be sent from the low pressure pump to the high pressure pump.
- the first control module is further configured to: after controlling the concrete pump to be transferred from the low pressure pump to the high pressure pump: when the first preset pumping speed is greater than the second preset pumping speed, the concrete pump is controlled according to the The second preset pumping speed is pumped; and when the first preset pumping speed is less than or equal to the second preset pumping speed, the control concrete pump is pumped according to the first preset pumping speed, wherein the first preset The pumping speed is the pumping speed set by the concrete pump during low pressure pumping, and the second preset speed is the maximum pumping speed set by the concrete pump during high pressure pumping.
- a concrete pumping apparatus includes the control device of any concrete pumping apparatus provided by the present invention.
- a control method of the concrete pumping apparatus comprising the following steps is adopted: detecting the preset pumping state of the first pumping of the concrete pump when the first pumping of the concrete pump is started; when the first pumping is pre-pulled When the pumping state is low pressure pumping, it is detected whether the working parameter of the second pumping is greater than a preset working parameter value and/or whether the waiting time of the concrete pump is greater than a preset waiting time value, wherein the second pumping is The first pumping of the first pumping; when the working parameter is greater than the preset working parameter value and/or the waiting time of the concrete pump is greater than the preset waiting time value, the controlled concrete pump is sent from the low pressure pump to the high pressure pumping conversion; And when the concrete pump is operated according to the high pressure pumping for the first
- FIG. 1 is a schematic diagram of high and low pressure conversion of a concrete pumping apparatus according to the related art
- Fig. 2 is a block diagram of a control apparatus of a concrete pumping apparatus according to a first embodiment of the present invention
- 2 is a block diagram of a control device of a concrete pumping apparatus according to a second embodiment
- FIG. 4 is a flow chart of a control method of a concrete pumping apparatus according to a first embodiment of the present invention
- FIG. 5 is a concrete pumping apparatus according to a second embodiment of the present invention.
- Control Method Flowchart; and Figure 6 is a flow chart of a control method of a concrete pumping apparatus in accordance with a third embodiment of the present invention.
- DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. Before introducing a specific embodiment of the present invention, the principle of high and low pressure conversion of a concrete pumping apparatus will be described. 1 is a schematic diagram of high and low pressure switching of a concrete pumping apparatus according to the related art. As shown in FIG.
- the first cartridge valve 7 when the first electromagnet DT1 is energized and the first valve 10 is in the left position, the first cartridge valve 7, the first The second cartridge valve 8 and the third cartridge valve 9 control the chamber through pressure oil lock, and the fourth cartridge valve 4, the fifth cartridge valve 5 and the sixth cartridge valve 6 control the chamber to return oil, and the fourth cartridge
- the valve 4, the fifth cartridge valve 5 and the sixth cartridge valve 6 are opened under pressure, and the main cylinder has a rod cavity through the fourth cartridge valve 4 and the sixth cartridge valve 6 and the first reversing valve port A and The second reversing valve port B communicates, and the rodless chamber communicates with each other through the fifth cartridge valve 5, and the system is in a low pressure pumping state.
- the fourth cartridge valve 4 When the second electromagnet DT2 is energized and the first valve 10 is in the right position, the fourth cartridge valve 4, the fifth cartridge valve 5 and the sixth cartridge valve 6 control the chamber pressure oil to lock, the first cartridge The valve 7, the second cartridge valve 8 and the third cartridge valve 9 control the chamber to return oil, and the first cartridge valve 7, the second cartridge valve 8 and the third cartridge valve 9 are opened under pressure, the main cylinder
- the rodless chamber communicates with the first reversing valve port A and the second reversing valve port B through the first cartridge valve 7 and the third cartridge valve 9, and the rod chamber communicates with each other through the second cartridge valve 8.
- the system is in a high pressure pumping state. High and low pressure switching is achieved by changing the connection of the pumping hydraulic system to change the pressure oil into the cylinder.
- the concrete pumping apparatus according to the present invention includes the control device of any concrete pumping apparatus provided by the present invention, by which the concrete pump is controlled to be pumped according to the high pressure pumping when the pumping is started, thereby eliminating the phenomenon of concrete plugging, and The oil in the communication chamber is exchanged, the oil temperature in the communication chamber is lowered, the utilization rate of the oil is improved, and the cylinder seal is effectively protected.
- the control device of the concrete pumping apparatus provided by the present invention will be described.
- the control device includes: a first detecting module 10 for starting a first pumping of the concrete pump, Detecting the set pumping state of the first pumping of the concrete pump; the second detecting module 20 is configured to detect whether the working parameter of the second pumping is greater than the pre-measurement when the set pumping state of the first pumping is low-pressure pumping Setting a working parameter value, wherein the second pumping is the first pumping of the first pumping, and/or the third detecting module 30, for detecting when the preset pumping state of the first pumping is low pressure pumping Whether the waiting time of the concrete pump is greater than a preset waiting time value; the first control module 40 is configured to control the concrete pump to be converted from the low pressure pump to the high pressure pumping when the working parameter is greater than the preset working parameter value, and/or Second The control module 50 is configured to control the concrete pump from the low pressure pump to
- the preset pumping state of the current pumping is first detected. If the preset pumping state of the current pumping is high pressure pumping, the other switching conditions are met, and the starting is started.
- the current preset pumping state is low pressure pumping, it is detected whether the working parameter of the second pumping is normal and/or whether the current waiting time is greater than the preset waiting time when starting pumping. Material time value, when the working parameter of the second pumping is abnormal and/or the current waiting time is greater than the preset waiting time value, the low pressure pumping is converted into a high pressure state, after pumping a set time or number of times, Restore the low pressure pumping status.
- the third detecting module 30 can be a timer, and the waiting time is collected by the timer.
- the waiting time exceeds a set value (the set value can be set according to the actual concrete pump and the actual material condition), It shows that the waiting time is longer and the resistance of the concrete becomes larger.
- the pumping state of the concrete pump can reduce the probability of the pipe blocking phenomenon when the high pressure pumping, so the control concrete pump is sent from the low pressure pump to the high pressure pumping conversion.
- the oil in the communication chamber is exchanged, the hot oil flows back to the oil tank, and the communication chamber is filled with a lower temperature and cleaner hydraulic oil, which is beneficial to lowering the temperature of the communication chamber and prolonging the seal life of the hydraulic cylinder and the oil life.
- the oil cleanliness is improved, and the high-pressure pumping can push the concrete in time to reduce the probability of plugging.
- the control device of this embodiment controls the concrete pumping equipment properly when starting pumping.
- the second detecting module 20 includes: a first detecting sub-module 21, configured to detect whether the pumping pressure of the second pumping is greater than a preset pumping pressure value.
- the first detecting sub-module 21 may be a pressure sensor disposed in the pumping hydraulic system, and the pumping pressure signal is collected by the pressure sensor, and the pumping pressure is related to the concrete material condition, when the pressure sensor detects the previous pumping process.
- the pumping pressure reaches the set value (the set value can be set according to the actual concrete pump and the actual material condition), it indicates that the previous pumping is in the low-pressure pumping state and cannot meet the requirements of the material condition, so the concrete pump is controlled by the low pressure.
- the control of the concrete pumping apparatus of this embodiment makes the control of the concrete pumping equipment more precise.
- the second detecting module 20 includes: a second detecting sub-module 23, configured to detect whether the second pumping stirring pressure is greater than a preset stirring pressure value.
- the second detecting sub-module 23 may be a pressure sensor disposed in the stirring pressure oil path, and the stirring pressure signal is collected by the pressure sensor, and the stirring pressure is related to the concrete material condition, and the pressure sensor detects the stirring during the previous pumping process.
- the pressure reaches the set value (the set value can be set according to the actual concrete pump and the actual material condition), it indicates that the previous pumping is in the low-pressure pumping state and cannot meet the requirements of the material condition, so the control concrete pump is sent by the low-pressure pump.
- the high pressure pumping conversion using the control device of the concrete pumping apparatus of this embodiment, makes the control of the concrete pumping equipment more precise.
- the concrete pump also has a positive pump and a reverse pump.
- the positive pump will draw the material from the hopper and then transport it to the construction site through the boom line. The opposite is true when the pump is reversed. The material will be pumped back to the hopper from the boom line.
- the concrete pump works in the positive pump.
- the concrete pump uses the reverse pump work in a short time, and the concrete is pumped back in the reverse direction, which can function to clear the pipe of the boom.
- the control device of the concrete pumping apparatus further includes: a fourth detecting module 70, configured to detect a first pumping preset positive and negative pump state of the concrete pump when the first pumping of the concrete pump is started;
- the fourth control module 80 is configured to: when the positive and negative pump state is the reverse pump, if the pumping state of the second pumping is low pressure pumping, the control concrete pump is sent from the low pressure pump to the high pressure pumping conversion, when the concrete pump is in accordance with the high pressure When the pumping work is for a second preset time, the control concrete pump is sent from the high pressure pump to the low pressure pump. If the pumping state of the second pump is high pressure pumping, the control concrete pump is sent from the high pressure pump to the low pressure pump.
- the concrete pump When the concrete pump is pumped for a third preset time according to the low pressure pump, the concrete pump is controlled to be transferred from the low pressure pump to the high pressure pump.
- the positive and negative pump states of the concrete pump are detected by the fourth detecting module 70.
- the positive and negative pump states of the concrete pump are reverse pumping, whether the current pumping state is low pressure pumping or high pressure pumping, To perform high and low voltage conversion, return to the original pumping state after a certain period of conversion.
- the connecting chamber is filled with a lower temperature and cleaner hydraulic oil, which is beneficial to reduce the oil temperature in the connecting chamber, prolong the life of the hydraulic cylinder seal and oil, and improve the cleanliness of the oil.
- the first control module 40 is further configured to: after controlling the concrete pump to be transferred from the low pressure pump to the high pressure pump: when the first preset pumping speed is greater than the second preset pumping speed, the concrete pump is controlled according to the second The preset pumping speed is pumped; and when the first preset pumping speed is less than or equal to the second preset pumping speed, the controlled concrete pump is pumped according to the first preset pumping speed, wherein the first preset pump The sending speed is the pumping speed set by the concrete pump during low pressure pumping, and the second preset speed is the maximum pumping speed set by the concrete pump at the high pressure pumping.
- Pumping speed refers to the speed at which the concrete output is set by the operator or by the system based on the pumping parameters.
- FIG. 3 is a block diagram of a control device for a concrete pumping apparatus according to a second embodiment of the present invention. As shown in FIG.
- the concrete pump control device of this embodiment includes a signal acquisition device 02 and a signal processing device 01, and the signal acquisition device 02 includes Pressure sensor, timer, etc.
- the signal processing device 01 is connected to the signal acquisition device 02, and one end is connected to the high and low pressure hydraulic system 03 of the concrete pump.
- the signal acquisition device 02 comprises two pressure sensors, which are arranged in the pumping system and the pressure system of the stirring system, detect the pumping pressure and the stirring pressure, and also include a timer (which can be programmed), recording the last pump stop to The time of this launch.
- the signal processing device 01 determines whether the concrete pump meets the high and low pressure switching conditions according to the signal collected by the signal collecting device 02 and the current pumping state and the positive and negative pump state of the concrete pump, and controls the concrete pump when the concrete pump meets the high and low pressure switching conditions.
- the high and low pressure hydraulic system 03 changes the connection mode to achieve high and low voltage conversion.
- the current setting pumping state is low pressure pumping, and the positive and negative pump status is positive pump, when starting pumping, judge whether the waiting time exceeds the set value and/or pumping in the previous pumping process. Whether the pressure exceeds the set value and/or whether the stirring pressure in the previous pumping process exceeds the set value, if the waiting time exceeds the set value and/or the pumping pressure in the previous pumping process exceeds the set value and / or the agitation pressure during the previous pumping process exceeds the set value, firstly converted to the high pressure state, and after a set time (or number of times) is pumped, the low pressure pumping state is resumed. According to the actual situation, it can be judged without considering the material time, pumping pressure or stirring pressure. As long as the current setting pumping state is low pressure pumping, and the positive and negative pump state is positive pump, when starting pumping, it is first converted to high pressure. State, after pumping for a set time (or number of times), resume low pressure pumping.
- the current positive and negative pump status is reverse pump, the current set pumping status is low pressure pumping, then when pumping is started, it will be converted to high pressure pumping state first, after pumping a set time (or number of times), then Restore low pressure pumping status.
- Step S102 the first pumping of the concrete pump is started, and the preset pumping state of the first pumping of the concrete pump is detected as low pressure pumping.
- step S104 When the preset pumping of the concrete pump is low pressure pumping, step S104 is performed. Otherwise, step S114 is performed. Step S104, detecting whether the working parameter of the second pumping is greater than the preset working parameter value and/or detecting whether the waiting time of the concrete pump is greater than a preset waiting time value, when the working parameter is greater than the preset working parameter value and/or when When the concrete pump waiting time is greater than the preset waiting time value, step S106 is performed; otherwise, step S114 is performed, wherein the second pumping is the previous pumping of the first pumping.
- detecting the second pumping operating parameter comprises detecting the pumping pressure of the concrete pump, and when the pumping pressure is greater than the preset pumping pressure value, performing step S106.
- the pumping pressure reaches the set value (the set value can be set according to the actual concrete pump and the actual material condition), indicating that the previous pumping is in the low-pressure pumping state cannot meet the requirements of the material condition, so the concrete pump needs to work.
- the high pressure pumping state through the method of this step, makes the control of the concrete pumping equipment more precise.
- detecting the second pumping operating parameter comprises detecting the stirring pressure of the concrete pump, and when the stirring pressure is greater than the preset stirring pressure value, performing step S106.
- the stirring pressure reaches the set value (the set value can be set according to the actual concrete pump and the actual material condition), it indicates that the previous pumping is in the low-pressure pumping state and cannot meet the requirements of the material condition, so the concrete pump needs to work at the high pressure.
- the pumping state the method of this step makes the control of the concrete pumping equipment more precise.
- the waiting time exceeds a set value (the set value can be set according to the actual concrete pump and the actual material condition), it indicates that the waiting time is longer and the concrete resistance becomes larger.
- Step S106 controlling the concrete pump to be sent from the low pressure pump to the high pressure pump.
- step S108 the concrete pump is pumped according to high pressure.
- the concrete pump is pumped according to the second preset pumping speed; and when the first preset pump When the sending speed is less than or equal to the second preset pumping speed, the concrete pump is pumped according to the first preset pumping speed, wherein the first preset pumping speed is the pumping speed set by the concrete pump during the low pressure pumping
- the second preset speed is the maximum pumping speed set by the concrete pump during high pressure pumping, that is: when the concrete pump is operated according to the high pressure pumping, comparing the pumping speed of the low pressure pumping before the conversion and the high pressure pump after the conversion Send the set maximum pumping speed and run at the lower of the two pumping speeds.
- Step S110 detecting whether the time of the concrete pump working according to the high pressure pump exceeds the first preset time.
- step S112 is performed, otherwise, the process returns to step S108.
- Step S112 controlling the concrete pump to be transferred from the high pressure pump to the low pressure pump.
- step S114 the concrete pump is pumped according to the low pressure.
- the control method of the concrete pumping apparatus further comprises: detecting the preset positive and negative pump state currently pumped by the concrete pump when starting the pumping of the concrete pump; and the current preset positive and negative pump state is When the pump is reversed, and if the pumping state of the current pumping is low pressure pumping, the control concrete pump is sent from the low pressure pump to the high pressure pumping conversion.
- the concrete pump is controlled by The high-pressure pump is sent to the low-pressure pumping conversion. If the pumping state of the current pumping is high-pressure pumping, the control concrete pump is sent from the high-pressure pump to the low-pressure pumping.
- the control concrete pump is sent from a low pressure pump to a high pressure pump.
- This preferred mode is mainly for the case where the positive and negative pump states of the concrete pump are reverse pumping.
- the positive and negative pump status of the concrete pump is reverse pump, whether the current pumping status is low pressure pumping or high pressure pumping, high and low pressure switching is required, and after a certain period of time, return to the original pumping state.
- FIGS. 5 is a flow chart of a control method of a concrete pumping apparatus according to a second embodiment of the present invention
- FIG. 6 is a flow chart of a control method of a concrete pumping apparatus according to a third embodiment of the present invention.
- P1 is the pumping hydraulic system pressure
- P1S is the set pumping hydraulic system pressure value for high and low pressure conversion
- P2 is the agitated hydraulic system pressure
- P2S is the set agitating hydraulic system pressure value for high and low pressure conversion
- the time from the last pump stop to the start of this time is the waiting time
- tlS is the set waiting time for high and low pressure conversion
- Y positive and negative pumping In the fixed state, Y 0 means back pump
- t2 is pumping time after conversion to high pressure pumping
- t2S is set to convert to high pressure Pumping time.
- the second solenoid valve DT2 is controlled to be powered, and the first solenoid valve DT1 is de-energized, so that the concrete pump is pumped from low pressure pumping to high pressure pumping, and when t2 >t2S, control the second solenoid valve DT2 to lose power, the first solenoid valve DT1 is energized, so that the concrete pump is pumped from high pressure pumping to low pressure pumping; when P1>P1S, P2>P2S and P3>P3S are not satisfied, If the current positive and negative pump status is positive pump, the state of the first electromagnetic valve DT1 and the second electromagnetic valve DT2 is unchanged.
- the first electromagnetic valve DT1 is energized, so that the concrete pump is High-pressure pumping to low-pressure pumping, or, if the current pumping state is high-pressure pumping, control the second solenoid valve DT2 to lose power, the first solenoid valve DT1 is energized, so that the concrete pump is pumped from high-pressure pumping to low-pressure pumping
- the second solenoid valve DT2 is controlled to be energized, and the first solenoid valve DT1 is de-energized, so
- the invention is not limited to any specific combination of hardware and software.
- the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
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Abstract
一种混凝土泵送设备及其控制方法和装置,该混凝土泵送设备的控制方法包括:在启动混凝土泵的第一泵送时,检测混凝土泵的第一泵送的预设泵送状态;当第一泵送的预设泵送状态为低压泵送时,检测第二泵送的工作参数是否大于预设工作参数和/或检测混凝土泵的待料时间是否大于预设待料时间值,其中第二泵送为第一泵送的前一泵送;当工作参数大于预设工作参数值和/或混凝土泵的待料时间大于预设待料时间值时,控制混凝土泵由低压泵送向高压泵送转换;以及当混凝土泵按照高压泵送工作第一预设时间时,控制混凝土泵由高压泵送向低压泵送转换。该泵送设备及其控制方法和装置,能够使得在启动泵送时对混凝土泵的控制恰当。
Description
混凝土泵送设备及其控制方法和装置 技术领域 本发明涉及混凝土泵送设备领域, 具体而言, 涉及一种混凝土泵送设备及其控制 方法和装置。 背景技术 在工程施工过程中, 需要运输、浇注大量的混凝土, 传统施工方法是采用手推车、 塔式起重机等, 但这些方法已明显不符合现代工程施工要求。 混凝土泵送施工方式具 有效率高、 质量好、 劳动强度低等优势, 在现代工程施工中应用越来越广泛。 混凝土泵送设备一般包含以下几个部分: 泵送液压系统: 驱动泵送油缸, 控制泵 送油缸的方向和速度; 分配液压系统: 驱动分配机构, 控制分配机构的换向; 搅拌液 压系统: 驱动搅拌机构。 混凝土泵的输送距离取决于混凝土泵的出口压力, 压力高时, 可输送距离长, 压 力低时, 可输送距离短。 由于混凝土料况越来越复杂, 以及高强度混凝土的应用越来 越广泛, 在混凝土泵启动时, 对混凝土泵的出口压力需求也不同。 为改变混凝土泵的 出口压力, 一般通过泵送液压系统的高低压切换来实现。 当混凝土泵的泵送状态为低 压泵送时, 压力油从有杆腔进推动活塞, 由于作用面积较小, 混凝土泵的出口压力小, 速度快; 当混凝土泵的泵送状态为高压泵送时。 压力油从无杆腔进推动活塞, 由于作 用面积较大, 混凝土泵的出口压力较大, 速度慢。 目前, 实现高低压转换的方式基本上可分为三种: 一种拆换胶管来实现高低压转 换; 一种是采用旋转油路块盖板的方式来改变油路沟通关系来实现高低压转换; 还有 一种是采用六个插装阀及一个电磁换向阀, 来实现电控高低压转换。 电控方式由于操 作简单, 转换过程中不会漏油, 已成为一种主流的转换方式。 现有的电控方式实现高低压转换时, 一般由操作员根据混凝土料况通过电气开关 控制, 若料况较好, 则采用低压泵送; 若料况较差, 混凝土通过管路时的摩擦力也较 大, 所以需要更大的泵送压力来推动, 则采用高压泵送。 在整个泵送作业中如果没有 人工转换, 则保持同一泵送状态。
这种通过操作员手动控制高低压转换的方式, 在混凝土泵启动时, 当待料时间较 长时, 混凝土的阻力变大, 需要混凝土泵的泵送状态为高压泵送, 如果当前泵送状态 为低压泵送且操作员延迟操作或没有操作低压泵送向高压泵送的转换, 由于低压泵送 时混凝土泵的出口压力较低, 不能及时推动混凝土, 容易产生堵管现象; 在泵送作业 中, 如果操作员长时间保持高低压状态不变, 连通腔的油液很少进行交换, 导致连通 腔的油温升高, 油液及油缸密封件的寿命下降。 针对相关技术中在启动泵送时对混凝土泵送设备的控制不当的问题, 目前尚未提 出有效的解决方案。 发明内容 本发明的主要目的在于提供一种混凝土泵送设备及其控制方法和装置, 以解决在 启动泵送时对混凝土泵送设备控制不当的问题。 为了实现上述目的, 根据本发明的一个方面, 提供了一种混凝土泵送设备的控制 方法。 根据本发明的混凝土泵送设备的控制方法包括: 在启动混凝土泵的第一泵送时, 检测混凝土泵的第一泵送的预设泵送状态; 当第一泵送的预设泵送状态为低压泵送 时,检测第二泵送的工作参数是否大于预设工作参数值和 /或检测混凝土泵的待料时间 是否大于预设待料时间值, 其中第二泵送为第一泵送的前一泵送; 当工作参数大于预 设工作参数值和 /或混凝土泵的待料时间大于预设待料时间值时,控制混凝土泵由低压 泵送向高压泵送转换; 以及当混凝土泵按照高压泵送工作第一预设时间时, 控制混凝 土泵由高压泵送向低压泵送转换。 进一步地, 检测第二泵送的工作参数是否大于预设工作参数值包括: 检测第二泵 送的泵送压力是否大于泵送压力值。 进一步地, 检测第二泵送的工作参数是否大于预设工作参数值包括: 检测第二泵 送的搅拌压力是否大于预设搅拌压力值。 进一步地,根据本发明的混凝土泵送设备的控制方法还包括: 在启动第一泵送时, 检测第一泵送的预设正反泵状态; 以及当第一泵送的预设正反泵状态为反泵时, 若第 一泵送的预设泵送状态为低压泵送, 控制混凝土泵由低压泵送向高压泵送转换, 当混 凝土泵按照高压泵送工作第二预设时间时,控制混凝土泵由高压泵送向低压泵送转换, 若第一泵送的预设泵送状态为高压泵送, 控制混凝土泵由高压泵送向低压泵送转换,
当混凝土泵按照低压泵送工作第三预设时间时, 控制混凝土泵由低压泵送向高压泵送 转换。 进一步地, 根据本发明的混凝土泵送设备的控制方法还包括: 混凝土泵由低压泵 送向高压泵送转换后, 若第一预设泵送速度大于第二预设泵送速度, 控制混凝土泵按 照第二预设泵送速度泵送; 以及若第一预设泵送速度小于或等于第二预设泵送速度, 控制混凝土泵按照第一预设泵送速度泵送, 其中, 第一预设泵送速度为混凝土泵在低 压泵送时设定的泵送速度, 第二预设速度为混凝土泵在高压泵送时设定的最大泵送速 度。 为了实现上述目的, 根据本发明的另一方面, 提供了一种混凝土泵送设备的控制 装置。 根据本发明的混凝土泵送设备的控制装置包括: 第一检测模块, 用于在启动混凝 土泵的第一泵送时, 检测混凝土泵的第一泵送的预设泵送状态; 第二检测模块, 用于 当第一泵送的预设泵送状态为低压泵送时, 检测第二泵送的工作参数是否大于预设工 作参数值, 其中第二泵送为第一泵送的前一泵送, 和 /或第三检测模块, 用于当第一泵 送的预设泵送状态为低压泵送时,检测混凝土泵的待料时间是否大于预设待料时间值; 第一控制模块, 用于当工作参数大于预设工作参数值时, 控制混凝土泵由低压泵送向 高压泵送转换, 和 /或第二控制模块用于当混凝土泵的待料时间大于预设待料时间值 时, 控制混凝土泵由低压泵送向高压泵送转换; 以及第三控制模块, 用于当混凝土泵 按照高压泵送工作第一预设时间时, 控制混凝土泵由高压泵送向低压泵送转换。 进一步地, 第二检测模块包括: 第一检测子模块, 用于检测第二泵送的泵送压力 是否大于预设泵送压力值。 进一步地, 第二检测模块包括: 第二检测子模块, 用于检测第二泵送的搅拌压力 是否大于预设搅拌压力值。 根据本发明的混凝土泵送设备的控制装置还包括: 第四检测模块, 用于在启动第 一泵送时, 检测第一泵送的预设正反泵状态; 以及第四控制模块, 用于当预设正反泵 状态为反泵时, 若第一泵送的预设泵送状态为低压泵送, 控制混凝土泵由低压泵送向 高压泵送转换, 当混凝土泵按照高压泵送工作第二预设时间时, 控制混凝土泵由高压 泵送向低压泵送转换, 若第一泵送的预设泵送状态为高压泵送, 控制混凝土泵由高压 泵送向低压泵送转换, 当混凝土泵按照低压泵送工作第三预设时间时, 控制混凝土泵 由低压泵送向高压泵送转换。
进一步地, 第一控制模块还用于在控制所述混凝土泵由低压泵送向高压泵送转换 后: 当第一预设泵送速度大于第二预设泵送速度时, 控制混凝土泵按照第二预设泵送 速度泵送; 以及当第一预设泵送速度小于或等于第二预设泵送速度时, 控制混凝土泵 按照第一预设泵送速度泵送, 其中, 第一预设泵送速度为混凝土泵在低压泵送时设定 的泵送速度, 第二预设速度为混凝土泵在高压泵送时设定的最大泵送速度。 为了实现上述目的, 根据本发明的另一方面, 提供了一种混凝土泵送设备。 根据 本发明的混凝土泵送设备包括本发明提供的任意混凝土泵送设备的控制装置。 通过本发明, 采用包括以下步骤的混凝土泵送设备的控制方法: 在启动混凝土泵 的第一泵送时,检测混凝土泵的第一泵送的预设泵送状态; 当第一泵送的预设泵送状 态为低压泵送时,检测第二泵送的工作参数是否大于预设工作参数值和 /或检测混凝土 泵的待料时间是否大于预设待料时间值, 其中第二泵送为第一泵送的前一泵送; 当工 作参数大于预设工作参数值和 /或混凝土泵的待料时间大于预设待料时间值时,控制混 凝土泵由低压泵送向高压泵送转换; 以及当混凝土泵按照高压泵送工作第一预设时间 时, 控制混凝土泵由高压泵送向低压泵送转换, 解决了在启动泵送时对混凝土泵控制 不当的问题, 进而达到了在启动泵送时对混凝土泵控制恰当的效果。 附图说明 构成本申请的一部分的附图用来提供对本发明的进一步理解, 本发明的示意性实 施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图中: 图 1是根据相关技术的混凝土泵送设备的高低压转换原理图; 图 2是根据本发明第一实施例的混凝土泵送设备的控制装置框图; 图 3是根据本发明第二实施例的混凝土泵送设备的控制装置框图; 图 4是根据本发明第一实施例的混凝土泵送设备的控制方法流程图; 图 5是根据本发明第二实施例的混凝土泵送设备的控制方法流程图; 以及 图 6是根据本发明第三实施例的混凝土泵送设备的控制方法流程图。
具体实施方式 需要说明的是, 在不冲突的情况下, 本申请中的实施例及实施例中的特征可以相 互组合。 下面将参考附图并结合实施例来详细说明本发明。 在介绍本发明的具体实施方式之前, 先介绍混凝土泵送设备的高低压转换原理。 图 1是根据相关技术的混凝土泵送设备的高低压转换原理图, 如图 1所示, 当第 一电磁铁 DT1得电, 第一阀 10处于左位时, 第一插装阀 7、第二插装阀 8和第三插装 阀 9控制腔通压力油锁住, 第四插装阀 4、 第五插装阀 5和第六插装阀 6控制腔通回 油, 第四插装阀 4、 第五插装阀 5和第六插装阀 6在压力作用下开启, 主油缸有杆腔 通过第四插装阀 4和第六插装阀 6与第一换向阀口 A和第二换向阀口 B沟通,无杆腔 通过第五插装阀 5相互沟通, 这时系统处于低压泵送状态。 当第二电磁铁 DT2得电, 第一阀 10处于右位时, 第四插装阀 4、 第五插装阀 5和第六插装阀 6控制腔通压力油 锁住, 第一插装阀 7、 第二插装阀 8和第三插装阀 9控制腔通回油, 第一插装阀 7、 第 二插装阀 8和第三插装阀 9在压力作用下开启, 主油缸无杆腔通过第一插装阀 7和第 三插装阀 9与第一换向阀口 A和第二换向阀口 B沟通,有杆腔通过第二插装阀 8相互 沟通, 这时系统处于高压泵送状态。 高低压切换是通过改变泵送液压系统连接方式进 而改变压力油进入油缸的部位实现。 因此, 在本发明的混凝土泵中, 高低压切换也是 通过改变第一电磁铁 DT1和第二电磁铁 DT2的得失电状态实现。 首先介绍本发明的混凝土泵送设备。 根据本发明的混凝土泵送设备包括本发明提供的任意混凝土泵送设备的控制装 置, 通过该控制装置, 在启动泵送时, 控制混凝土泵按照高压泵送工作, 消除了混凝 土堵管现象, 并且将连通腔的油液进行交换, 降低连通腔的油温, 提高油液的利用率, 有效地保护了油缸密封件。 下面介绍本发明提供的混凝土泵送设备的控制装置。 图 2是根据本发明第一实施例的混凝土泵送设备的控制装置框图, 如图 2所示, 该控制装置包括: 第一检测模块 10, 用于在启动混凝土泵的第一泵送时, 检测混凝土 泵第一泵送的设定泵送状态; 第二检测模块 20, 用于当第一泵送的设定泵送状态为低 压泵送时, 检测第二泵送的工作参数是否大于预设工作参数值, 其中第二泵送为第一 泵送的前一泵送,和 /或第三检测模块 30,用于当第一泵送的预设泵送状态为低压泵送 时, 检测混凝土泵的待料时间是否大于预设待料时间值; 第一控制模块 40, 用于当工 作参数大于预设工作参数值时, 控制混凝土泵由低压泵送向高压泵送转换, 和 /或第二
控制模块 50用于当混凝土泵的待料时间大于预设待料时间值时,控制混凝土泵由低压 泵送向高压泵送转换; 以及第三控制模块 60, 用于当混凝土泵按照高压泵送工作第一 预设时间时, 控制混凝土泵由高压泵送向低压泵送转换。 在该实施例中, 启动混凝土泵的泵送时, 首先检测当前泵送的预设泵送状态, 若 当前泵送的预设泵送状态为高压泵送, 则不管其它转换条件是否满足, 启动时保持高 压状态不变; 若当前预设泵送状态为低压泵送, 则启动泵送时先检测第二泵送的工作 参数是否正常和 /或先检测当前的待料时间是否大于预设待料时间值, 当第二泵送的工 作参数出现异常和 /或当前的待料时间大于预设待料时间值时,将低压泵送转换为高压 状态, 泵送一设定时间或次数后, 再恢复低压泵送状态。 可选地, 第三检测模块 30 可以为计时器, 通过计时器采集待料时间, 当待料时间超过一设定值时 (该设定值可 以根据实际混凝土泵和实际料况设定),说明待料时间较长,混凝土的阻力变大,此时, 混凝土泵的泵送状态为高压泵送时能够降低堵管现象发生的概率, 因此控制混凝土泵 由低压泵送向高压泵送转换。 由于高低压转换, 连通腔部分油液进行交换, 热油流回油箱, 连通腔补入温度较 低较清洁的液压油, 有利于降低连通腔油温, 延长液压缸密封件和油液寿命, 提高油 液清洁度, 并且高压泵送能及时推动混凝土, 降低堵管概率, 采用该实施例的控制装 置在启动泵送时对混凝土泵送设备的控制恰当。 优选地, 第二检测模块 20包括: 第一检测子模块 21, 用于检测第二泵送的泵送 压力是否大于预设泵送压力值。 可选地,第一检测子模块 21可以为设置在泵送液压系统中的压力传感器,通过压 力传感器采集泵送压力信号, 泵送压力与混凝土料况有关, 当压力传感器检测前一泵 送过程中泵送压力达到设定值时 (该设定值可以根据实际混凝土泵和实际料况设定), 说明前一泵送为低压泵送状态不能满足料况的要求, 因此控制混凝土泵由低压泵送向 高压泵送转换, 采用该实施例的混凝土泵送设备的控制装置使得混凝土泵送设备的控 制更精确。 优选地, 第二检测模块 20包括: 第二检测子模块 23, 用于检测第二泵送的搅拌 压力是否大于预设搅拌压力值。 可选地,第二检测子模块 23可以为设置在搅拌压力油路中的压力传感器,通过压 力传感器采集搅拌压力信号, 搅拌压力与混凝土料况有关, 当压力传感器检测前一泵 送过程中搅拌压力达到设定值时 (该设定值可以根据实际混凝土泵和实际料况设定), 说明前一泵送为低压泵送状态不能满足料况的要求, 因此控制混凝土泵由低压泵送向
高压泵送转换, 采用该实施例的混凝土泵送设备的控制装置使得混凝土泵送设备的控 制更精确。 根据混凝土活塞与摆缸动作关系, 混凝土泵还有正泵与反泵之分。 正泵即将输送 料从料斗吸入, 再通过臂架管路输送到工地, 反泵时正好相反, 即将输送料从臂架管 路反抽回料斗, 一般情况下, 混凝土泵工作在正泵, 将混凝土输送到工地, 当出现堵 管等现象时, 混凝土泵在较短时间内采用反泵工作, 将混凝土反向抽回, 能够起到疏 通臂架管路的作用。 根据本发明的混凝土泵送设备的控制装置还包括: 第四检测模块 70, 用于在启动 混凝土泵的第一泵送时,检测混凝土泵的第一泵送的预设正反泵状态; 以及第四控制 模块 80, 用于当正反泵状态为反泵时, 若第二泵送的泵送状态为低压泵送, 控制混凝 土泵由低压泵送向高压泵送转换, 当混凝土泵按照高压泵送工作第二预设时间时, 控 制混凝土泵由高压泵送向低压泵送转换, 若第二泵送的泵送状态为高压泵送, 控制混 凝土泵由高压泵送向低压泵送转换, 当混凝土泵按照低压泵送工作第三预设时间时, 控制混凝土泵由低压泵送向高压泵送转换。 在该实施例中,通过第四检测模块 70检测混凝土泵的正反泵状态, 当混凝土泵的 正反泵状态为反泵时, 无论当前的泵送状态为低压泵送或高压泵送, 都要进行高低压 转换, 转换一定时间后再回到原来的泵送状态。 由于反泵时对混凝土泵的出口压力需 求较小, 低压泵送和高压泵送都可以完成混凝土的反向抽回, 但是通过高低压转换, 能够对连通腔部分油液进行交换, 热油流回油箱, 连通腔补入温度较低较清洁的液压 油, 有利于降低连通腔油温, 延长液压缸密封件和油液寿命, 提高油液清洁度。 优选地, 第一控制模块 40还用于在控制混凝土泵由低压泵送向高压泵送转换后: 当第一预设泵送速度大于第二预设泵送速度时, 控制混凝土泵按照第二预设泵送速度 泵送; 以及当第一预设泵送速度小于或等于第二预设泵送速度时, 控制混凝土泵按照 第一预设泵送速度泵送, 其中, 第一预设泵送速度为混凝土泵在低压泵送时设定的泵 送速度, 第二预设速度为混凝土泵在高压泵送设定的最大泵送速度。 泵送速度指混凝土输出的速度, 由操作者或由系统根据泵送参数设定。 因为低压 泵送状态最大泵送速度大于高压泵送状态最大泵送速度(即低压高速、 高压低速), 采 用该实施例的混凝土泵的控制装置, 当低压泵送状态转换为高压泵送状态时, 保证低 压泵送和高压泵送的泵送速度相当, 快慢相差较小, 利于施工, 防止高压泵送设定的 泵送速度大于低压泵送设定的泵送速度时, 施工者不能及时跟上泵送速度。
图 3是根据本发明第二实施例的混凝土泵送设备的控制装置框图, 如图 3 所示, 该实施例的混凝土泵控制装置包括信号采集装置 02和信号处理装置 01, 信号采集装 置 02包括压力传感器、计时器等。信号处理装置 01—端与信号采集装置 02相连, 一 端与混凝土泵的高低压液压系统 03相连。 信号采集装置 02包括两个压力传感器, 设 置于泵送系统和搅拌系统压油路中,检测泵送压力和搅拌压力,还包括一个计时器(可 为程序计时), 记录上次泵送停止到本次启动的时间。 信号处理装置 01根据信号采集 装置 02采集的信号以及混凝土泵当前的泵送状态和正反泵状态,判断混凝土泵是否符 合高低压转换条件, 当混凝土泵是否符合高低压转换条件时, 控制混凝土泵的高低压 液压系统 03改变连接方式实现高低压转换。 具体的工作过程如下:
1 )若当前设定泵送状态为高压泵送, 且正反泵状态为正泵, 在启动泵送时, 保持 高压状态不变。 如果设定状态为高压泵送状态, 且为正泵, 此时转换为低压泵送状态, 可能因推 力不够, 导致混凝土不能输送出去。 因此, 如果为高压状态, 且为正泵, 则不作转换。
2)若当前设定泵送状态为低压泵送, 且正反泵状态为正泵, 在启动泵送时, 判断 待料时间是否超过设定值和 /或前一泵送过程中的泵送压力是否超过设定值和 /或前一 泵送过程中的搅拌压力是否超过设定值,若待料时间超过设定值和 /或前一泵送过程中 得泵送压力超过设定值和 /或前一泵送过程中的搅拌压力超过设定值,先转换为高压状 态, 泵送一设定时间 (或次数) 后, 再恢复低压泵送状态。 根据实际情况, 可以不对待料时间、 泵送压力或搅拌压力进行判断, 只要当前设 定泵送状态为低压泵送, 且正反泵状态为正泵, 在启动泵送时, 先转换为高压状态, 泵送一设定时间 (或次数) 后, 再恢复低压泵送状态。
3 )若当前正反泵状态为反泵, 当前设定泵送状态为低压泵送, 则启动泵送时, 先 转换为高压泵送状态, 泵送一设定时间 (或次数) 后, 再恢复低压泵送状态。
4)若当前正反泵状态为反泵, 当前设定泵送状态为高压泵送, 则启动泵送时, 先 转换为低压泵送状态, 泵送一设定时间 (或次数) 后, 再恢复高压泵送状态。 下面介绍本发明提供的混凝土泵送设备的控制方法。 图 4是根据本发明第一实施例的混凝土泵送设备的控制方法流程图,如图 4所示, 该方法包括如下的步骤 S102至步骤 S114:
步骤 S102, 启动混凝土泵的第一泵送, 检测混凝土泵的第一泵送的预设泵送状态 是否为低压泵送, 当混凝土泵的预设泵送为低压泵送时, 执行步骤 S104, 否则, 执行 步骤 S114。 步骤 S104,检测第二泵送的工作参数是否大于预设工作参数值和 /或检测混凝土泵 的待料时间是否大于预设待料时间值, 当工作参数大于预设工作参数值和 /或当混凝土 泵待料时间大于预设待料时间值时, 执行步骤 S106, 否则, 执行步骤 S114, 其中第二 泵送为第一泵送的前一泵送。 优选地, 当泵送状态为低压泵送时, 检测第二泵送的工作参数包括检测检测混凝 土泵的泵送压力, 当泵送压力大于预设泵送压力值时, 才执行步骤 S106。 当泵送压力 达到设定值时(该设定值可以根据实际混凝土泵和实际料况设定), 说明前一泵送为低 压泵送状态不能满足料况的要求, 因此混凝土泵需要工作在高压泵送状态, 通过该步 骤的方法使得混凝土泵送设备的控制更精确。 优选地, 当泵送状态为低压泵送时, 检测第二泵送的工作参数包括检测混凝土泵 的搅拌压力, 当搅拌压力大于预设搅拌压力值时, 才执行步骤 S106。 当搅拌压力达到 设定值时(该设定值可以根据实际混凝土泵和实际料况设定), 说明前一泵送为低压泵 送状态不能满足料况的要求, 因此混凝土泵需要工作在高压泵送状态, 通过该步骤的 方法使得混凝土泵送设备的控制更精确。 当待料时间超过一设定值时 (该设定值可以根据实际混凝土泵和实际料况设定), 说明待料时间较长, 混凝土的阻力变大, 此时, 只有混凝土泵的泵送状态为高压泵送 才能防止堵管现象发生, 因此混凝土泵需要工作在高压泵送状态, 通过该步骤的方法 使得混凝土泵在启动时不会出现堵管现象, 控制更精确。 步骤 S106, 控制混凝土泵由低压泵送向高压泵送转换。 步骤 S108, 混凝土泵按照高压泵送工作。 优选地, 混凝土泵按照高压泵送工作后, 当第一预设泵送速度大于第二预设泵送 速度时, 混凝土泵按照第二预设泵送速度泵送; 以及当第一预设泵送速度小于或等于 第二预设泵送速度时, 混凝土泵按照第一预设泵送速度泵送, 其中, 第一预设泵送速 度为混凝土泵在低压泵送时设定的泵送速度, 第二预设速度为混凝土泵在高压泵送时 设定的最大泵送速度, 即: 在混凝土泵按照高压泵送工作时, 比较转换前低压泵送时 的泵送速度与转换后高压泵送设定的最大泵送速度, 并按照两泵送速度中较小的速度 运行。
通过该优选实施方式, 当低压泵送状态转换为高压泵送状态时, 保证低压泵送和 高压泵送的泵送速度相当, 快慢相差较小, 利于施工, 防止高压泵送时设定的泵送速 度大于低压泵送设定的泵送速度时, 施工者不能及时跟上泵送速度。 步骤 S110, 检测混凝土泵按照高压泵送工作的时间是否超过第一预设时间。 当混 凝土泵按照高压泵送工作的时间超过第一预设时间时, 执行步骤 S112, 否则返回步骤 S108。 按照高压泵送工作一定时间后, 消除了混凝土堵管现象, 并且将连通腔的油液进 行交换, 如果长时间按照高压泵送工作, 混凝土泵送的速度慢, 及时转换为低压泵送, 加快混凝土泵送的速度。 步骤 S112, 控制混凝土泵由高压泵送向低压泵送转换。 步骤 S114, 混凝土泵按照低压泵送工作。 优选地, 根据本发明的混凝土泵送设备的控制方法还包括: 在启动混凝土泵的泵 送时,检测混凝土泵当前泵送的预设正反泵状态; 以及当前的预设正反泵状态为反泵 时, 并且若当前泵送的泵送状态为低压泵送, 控制混凝土泵由低压泵送向高压泵送转 换, 当混凝土泵按照高压泵送工作第二预设时间时, 控制混凝土泵由高压泵送向低压 泵送转换, 若当前泵送的泵送状态为高压泵送, 控制混凝土泵由高压泵送向低压泵送 转换, 当混凝土泵按照低压泵送工作第三预设时间时, 控制混凝土泵由低压泵送向高 压泵送转换。 该优选方式主要针对混凝土泵的正反泵状态为反泵时的情况。 当混凝土泵的正反 泵状态为反泵时,无论当前的泵送状态为低压泵送或高压泵送, 都要进行高低压转换, 转换一定时间后再回到原来的泵送状态。由于反泵时对混凝土泵的出口压力需求较小, 低压泵送和高压泵送都可以完成混凝土的反向抽回, 但是通过高低压转换, 能够对连 通腔部分油液进行交换, 热油流回油箱, 连通腔补入温度较低较清洁的液压油, 有利 于降低连通腔油温, 延长液压缸密封件和油液寿命, 提高油液清洁度。 图 5是根据本发明第二实施例的混凝土泵送设备的控制方法流程图, 图 6是根据 本发明第三实施例的混凝土泵送设备的控制方法流程图, 在图 5和图 6中, P1为泵送 液压系统压力, P1S为设定的进行高低压转换的泵送液压系统压力值; P2为搅拌液压 系统压力, P2S为设定的进行高低压转换的搅拌液压系统压力值; tl为上次泵送停止 到本次启动的时间即待料时间, tlS为设定的进行高低压转换的待料时间; Y正反泵设
定状态, Y=0表示反泵; Ζ表示高低压设定状态, Ζ=0表示为低压泵送; t2为转换为 高压泵送后的泵送时间, t2S为设定的转换为高压后的泵送时间。 如图 5所示, 当满足 P1>P1S 或 P2>P2S或 P3>P3S任意一个条件时, 若当前的 泵送状态为高压泵送, 如图 1所示的第一电磁阀 DT1与第二电磁阀 DT2的状态不变, 若当前的泵送状态为低压泵送, 控制第二电磁阀 DT2得电, 第一电磁阀 DT1失电, 使得混凝土泵由低压泵送转向高压泵送,并且当 t2>t2S时,控制第二电磁阀 DT2失电, 第一电磁阀 DT1得电, 使得混凝土泵由高压泵送转向低压泵送; 当 P1>P1S、 P2>P2S 和 P3>P3S均不满足时, 若当前的正反泵状态为正泵, 第一电磁阀 DT1与第二电磁阀 DT2的状态不变, 若当前的正反泵状态为反泵, 即 Y=0时, 判断当前的泵送状态, 若 当前的泵送状态为低压泵送 Ζ=0时, 控制第二电磁阀 DT2得电, 第一电磁阀 DT1失 电, 使得混凝土泵由低压泵送转向高压泵送, 并且当 t2>t2S时, 控制第二电磁阀 DT2 失电, 第一电磁阀 DT1得电, 使得混凝土泵由高压泵送转向低压泵送, 或者, 若当前 的泵送状态是高压泵送时, 控制第二电磁阀 DT2失电, 第一电磁阀 DT1得电, 使得 混凝土泵由高压泵送转向低压泵送, 并且当 t2>t2S时, 控制第二电磁阀 DT2得电, 第 一电磁阀 DT1失电, 使得混凝土泵由低压泵送转向高压泵送。 如图 6所示, 当 P1>P1S、 P2>P2S和 P3>P3S三个条件均满足时, 若当前的泵送 状态为高压泵送, 如第一电磁阀 DT1与第二电磁阀 DT2的状态不变, 若当前的泵送 状态为低压泵送, 控制第二电磁阀 DT2得电, 第一电磁阀 DT1失电, 使得混凝土泵 由低压泵送转向高压泵送, 并且当 t2>t2S时, 控制第二电磁阀 DT2失电, 第一电磁阀 DT1得电, 使得混凝土泵由高压泵送转向低压泵送; 当 P1>P1S、 P2>P2S和 P3>P3S 中任意一个条件不满足时,, 若当前的正反泵状态为正泵, 第一电磁阀 DT1 与第二电 磁阀 DT2的状态不变, 若当前的正反泵状态为反泵, 即 Y=0时, 判断当前的泵送状 态, 若当前的泵送状态为低压泵送 Ζ=0时, 控制第二电磁阀 DT2得电, 第一电磁阀 DT1失电, 使得混凝土泵由低压泵送转向高压泵送, 并且当 t2>t2S时, 控制第二电磁 阀 DT2失电, 第一电磁阀 DT1得电, 使得混凝土泵由高压泵送转向低压泵送, 或者, 若当前的泵送状态是高压泵送时, 控制第二电磁阀 DT2失电, 第一电磁阀 DT1得电, 使得混凝土泵由高压泵送转向低压泵送,并且当 t2>t2S时,控制第二电磁阀 DT2得电, 第一电磁阀 DT1失电, 使得混凝土泵由低压泵送转向高压泵送。 从以上的描述可以看出, 采用本发明的实施例使得在启动泵送时对混凝土泵送设 备的控制更恰当, 更精确。
需要说明的是, 在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的 计算机系统中执行, 并且, 虽然在流程图中示出了逻辑顺序, 但是在某些情况下, 可 以以不同于此处的顺序执行所示出或描述的步骤。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而, 可以 将它们存储在存储装置中由计算装置来执行, 或者将它们分别制作成各个集成电路模 块, 或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明 不限制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。
Claims
1. 一种混凝土泵送设备的控制方法, 其特征在于, 包括:
在启动混凝土泵的第一泵送时, 检测所述混凝土泵的第一泵送的预设泵送 状态;
当所述第一泵送的预设泵送状态为低压泵送时, 检测所述第二泵送的工作 参数是否大于预设工作参数值和 /或检测所述混凝土泵的待料时间是否大于预 设待料时间值, 其中所述第二泵送为所述第一泵送的前一泵送;
当所述工作参数大于所述预设工作参数值和 /或所述混凝土泵的待料时间 大于所述预设待料时间值时, 控制所述混凝土泵由低压泵送向高压泵送转换; 以及
当所述混凝土泵按照高压泵送工作第一预设时间时, 控制所述混凝土泵由 高压泵送向低压泵送转换。
2. 根据权利要求 1所述的混凝土泵送设备的控制方法, 其特征在于, 检测所述第 二泵送的工作参数是否大于预设工作参数值包括:
检测所述第二泵送的泵送压力是否大于预设泵送压力值。
3. 根据权利要求 1所述的混凝土泵送设备的控制方法, 其特征在于, 检测所述第 二泵送的工作参数是否大于预设工作参数值包括:
检测所述第二泵送的搅拌压力是否大于预设搅拌压力值。
4. 根据权利要求 1所述的混凝土泵送设备的控制方法, 其特征在于, 还包括: 在启动所述第一泵送时, 检测所述第一泵送的预设正反泵状态; 以及 当所述第一泵送的预设正反泵状态为反泵时,
若所述第一泵送的预设泵送状态为低压泵送, 控制所述混凝土泵由低 压泵送向高压泵送转换, 当所述混凝土泵按照高压泵送工作第二预设时间 时, 控制所述混凝土泵由高压泵送向低压泵送转换,
若所述第一泵送的预设泵送状态为高压泵送, 控制所述混凝土泵由高 压泵送向低压泵送转换, 当所述混凝土泵按照低压泵送工作第三预设时间 时, 控制所述混凝土泵由低压泵送向高压泵送转换。
5. 根据权利要求 1所述的混凝土泵送设备的控制方法, 其特征在于, 还包括: 所 述混凝土泵由低压泵送向高压泵送转换后,
若第一预设泵送速度大于第二预设泵送速度, 控制所述混凝土泵按照所述 第二预设泵送速度进行泵送; 以及
若所述第一预设泵送速度小于或等于所述第二预设泵送速度, 控制所述混 凝土泵按照所述第一预设泵送速度进行泵送,
其中, 所述第一预设泵送速度为所述混凝土泵在低压泵送时设定的泵送速 度, 所述第二预设速度为所述混凝土泵在高压泵送时设定的最大泵送速度。
6. 一种混凝土泵送设备的控制装置, 其特征在于, 包括:
第一检测模块, 用于在启动混凝土泵的第一泵送时, 检测所述混凝土泵的 第一泵送的预设泵送状态;
第二检测模块, 用于当所述第一泵送的预设泵送状态为低压泵送时, 检测 所述第二泵送的工作参数是否大于预设工作参数值, 其中所述第二泵送为所述 第一泵送的前一泵送, 和 /或第三检测模块, 用于当所述第一泵送的预设泵送状 态为低压泵送时, 检测所述混凝土泵的待料时间是否大于预设待料时间值; 第一控制模块, 用于当所述工作参数大于所述预设工作参数值时, 控制所 述混凝土泵由低压泵送向高压泵送转换, 和 /或第二控制模块, 用于当所述混凝 土泵的待料时间大于所述预设待料时间值时, 控制所述混凝土泵由低压泵送向 高压泵送转换; 以及
第三控制模块, 用于当所述混凝土泵按照高压泵送工作第一预设时间时, 控制所述混凝土泵由高压泵送向低压泵送转换。
7. 根据权利要求 6所述的混凝土泵送设备的控制装置, 其特征在于, 所述第二检 测模块包括:
第一检测子模块, 用于检测所述第二泵送的泵送压力是否大于预设泵送压 力值。
8. 根据权利要求 6所述的混凝土泵送设备的控制装置, 其特征在于, 所述第二检 测模块包括:
第二检测子模块, 用于检测所述第二泵送的搅拌压力是否大于预设搅拌压 力值。
9. 根据权利要求 6所述的混凝土泵送设备的控制装置, 其特征在于, 还包括: 第四检测模块, 用于在启动第一泵送时, 检测所述第一泵送的预设正反泵 状态; 以及
第四控制模块, 用于当所述预设正反泵状态为反泵时,
若所述第一泵送的预设泵送状态为低压泵送, 控制所述混凝土泵由低 压泵送向高压泵送转换, 当所述混凝土泵按照高压泵送工作第二预设时间 时, 控制所述混凝土泵由高压泵送向低压泵送转换,
若所述第一泵送的预设泵送状态为高压泵送, 控制所述混凝土泵由高 压泵送向低压泵送转换, 当所述混凝土泵按照低压泵送工作第三预设时间 时, 控制所述混凝土泵由低压泵送向高压泵送转换。
10. 根据权利要求 6所述的混凝土泵送设备的控制装置,其特征在于, 所述第一控 制模块还用于在控制所述混凝土泵由低压泵送向高压泵送转换后,
当第一预设泵送速度大于第二预设泵送速度时, 控制所述混凝土泵按照所 述第二预设泵送速度进行泵送; 以及
当所述第一预设泵送速度小于或等于所述第二预设泵送速度时, 控制所述 混凝土泵按照所述第一预设泵送速度进行泵送,
其中, 所述第一预设泵送速度为所述混凝土泵在低压泵送时设定的泵送速 度, 所述第二预设速度为所述混凝土泵在高压泵送时设定的最大泵送速度。
11. 一种混凝土泵送设备,其特征在于,包括权利要求 6至 10中任意一项所述的混 凝土泵送设备的控制装置。
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