CN110154242B - Load verification method for concrete batching scale - Google Patents
Load verification method for concrete batching scale Download PDFInfo
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- CN110154242B CN110154242B CN201810274986.XA CN201810274986A CN110154242B CN 110154242 B CN110154242 B CN 110154242B CN 201810274986 A CN201810274986 A CN 201810274986A CN 110154242 B CN110154242 B CN 110154242B
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- batching scale
- load
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- concrete batching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0422—Weighing predetermined amounts of ingredients, e.g. for consecutive delivery
- B28C7/044—Weighing mechanisms specially adapted therefor; Weighing containers
Abstract
The invention discloses a concrete batching scale load verification method, which can realize accurate supporting pivot, consistent, uniform and balanced load and gravity direction through equipment installation and fixation, achieves the aim of accurate verification, is connected with a computer through a data acquisition and processing device, realizes intelligent control through software in the computer, then implements the verification of the concrete batching scale, transmits the measured data to the computer to compare and verify the data with a weight verification method, can improve the working efficiency and the metering accuracy and play greater social and economic benefits aiming at the problems of time consumption and high force consumption and cost of the verification of the existing concrete batching scale.
Description
Technical Field
The invention relates to a load calibration method for a concrete batching scale.
Background
The batching scale is a special weighing apparatus which is used for batching and metering a plurality of materials in a weighed object according to a preset mass ratio. The concrete batching scale is used for synthesizing different bulk materials (concrete raw materials: aggregate, cement, water, admixture and the like) into concrete with preset mass and fixed matching proportion in an automatic weighing mode. The weighing principle of the batching scale is that the weight of an object is determined by utilizing the gravity acting on a weighing hopper, namely, the force converted from the mass of the material is measured and calculated by a measuring device, and then the measured value is displayed in mass units.
The concrete batching scale mainly comprises one or more weighing units, each weighing unit quantitatively weighs corresponding materials according to a preset proportion, then quantitatively combines and accumulates the materials, and finally, the concrete is stirred and output. A typical concrete batching system includes four types of batching scales: aggregate, cement, water, additives, special admixture scales for adding fly ash and the like. Similar devices include concrete mixers, asphalt mixers, and compounders with weighing (control) systems for automatic (dosing) compounding. With the popularization of commercial concrete, the concrete batching scale is widely applied to various building industries in China, and the batching procedure is a key link in the process of producing concrete and directly influences the performance and quality of the concrete. The basic device and core of the batching are batching scales. Whether the metering of the batching scale is accurate or not is very important. At present, no special national verification regulation exists for the verification of the concrete batching scale. According to the characteristics of the batching scale, static verification and dynamic verification are required to be carried out simultaneously, and local standards such as: JJG 96-2007, JJG 66-2008 and JJG 1040-2011. However, in various verification methods, a standard weight is still adopted for static verification as a standard device, and the concrete batching scale cannot use a large weight due to effective hopper space, and the placement of a small weight is time-consuming and labor-consuming; the dynamic verification adopts material verification, but the loading and unloading times of the materials are minimum 10 times according to requirements, and the labor hour is also very consumed. For example, the HZS120 type batching scale which is widely used at present has 4 maximum scales (3000-5000) kg. which can reach more than 2000kg when in actual use, and also has 4 other scales, such as a cement scale, fly ash, a water scale, an additive scale and the like. The static verification of the 25kg standard weight up and down at one time needs at least more than 300 times; dynamic verification if each scale examines a common loading point, 8 scales are used for calculation, 80 times of materials need to be loaded, and both the materials cannot be found and a large amount of manpower and material resources are needed.
In conclusion, with the rapid development of economy, the calibration requirements of enterprises and public institutions on concrete batching scales are higher and higher, the traditional standard method is difficult to perform full-scale calibration, and labor and force are consumed.
Disclosure of Invention
In view of the above, the invention aims to provide a load calibration method for a concrete batching scale, which can improve the working efficiency and the metering accuracy and exert greater social and economic benefits.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a load calibration method for a concrete batching scale comprises the following steps:
1) the method comprises the following steps of:
A. working sensors are arranged in the middle of the four fixing rods on the rectangular batching scale bracket, and every two working sensors are arranged correspondingly;
B. placing a weighing hopper in a batching scale bracket, wherein fixing lugs in the middle of four side edges of the weighing hopper correspond to the working sensors, and the fixing lugs are positioned above the working sensors and extrude the working sensors;
C. the calibrating device is arranged above the working sensor and is fixed with the batching scale bracket through the load supporting frame, and then the fixed block at the lower end of the standard sensor in the batching scale bracket is clamped and fixed with the fixed lug of the weighing hopper, so that the accurate supporting pivot and the consistent, uniform and balanced load and gravity direction are realized, the aim of accurate calibration is fulfilled, and the installation can be finished;
2) testing by a calibrating device: after the equipment in the step 1) is installed, connecting a data acquisition and processing device on the calibrating device with a computer, compiling a targeted software control program through the computer, reading out data by adopting a computer automatic control mode, checking the reliability of the data, and improving the intelligent degree;
3) after the test of the calibrating device in the step 2) is finished, the concrete batching scale is calibrated: simultaneously starting a loading device to carry out tensile loading on the weighing hopper, simultaneously acquiring data and standard loads of each standard sensor by a computer, and comparing the data and the standard loads with the detected equipment; the maximum allowable error of the standard sensor is not more than 1/3 of the maximum allowable error of the concrete batching scale under the corresponding load, the load fluctuation of the loading device is less than or equal to 1kg/30min, and the measured data is transmitted to the computer to be compared and verified with the weight verification method, so that the verification data can be obtained.
Further, the load support frame in the step 1) can be movably arranged.
Further, the loading device in the step 3) performs synchronous loading through software control in a computer.
Further, the working sensor and the standard sensor in the step 3) are subjected to coaxial equidirectional synchronous pulling force when being loaded.
The utility model provides a concrete batching scale load intelligence calibrating installation, including the batching scale support, and set up on the batching scale support, and with the fixed work sensor of batching scale support, and set up in the work sensor top, and with the fixed load support frame of batching scale support, and go up to set up at load support frame top, and with the fixed loading device of load support frame, and set up inside the load support frame, and be connected with the loading device, a standard sensor for accurate detection material quality, and set up in load support frame one side, and respectively with the work sensor, data acquisition and processing apparatus that loading device and standard sensor are connected, and set up the hopper of weighing in batching scale support inside.
Furthermore, the lower end of the load support frame is provided with a clamping seat fixed with the batching scale support, and the clamping seat and the load support frame are integrally formed.
Furthermore, the loading device adopts a TLA precision loading control system, a limiting seat is arranged on one side of the loading device above the load support frame, and a connecting piece is arranged on the part of the loading device in the load support frame.
Furthermore, the connecting piece is provided with a limiting column which is fixed with the connecting piece, correspondingly embedded with the limiting seat and used for preventing the standard sensor from vibrating.
Furthermore, the standard sensor adopts the high accuracy sensor that the model is 2t, the upper and lower both ends of standard sensor are provided with the connecting rod fixed with the standard sensor, the connecting rod of upper end is fixed with the connecting piece, the end of the connecting rod of lower extreme is provided with the fixed block that is fixed with the connecting rod and is used for the card to hold the hopper of weighing.
Furthermore, the data acquisition and processing device adopts a software system with the model of DSP.
The technical effects of the invention are mainly reflected in the following aspects:
1. the whole system is a rigid and closed static mechanical balance system by adopting the DSP technology, so that the test data is more accurate;
2. by a software control technology, synchronous loading of loading systems on the sensors is guaranteed, and the test process is more reasonable;
3. besides conventional error processing, the control software can automatically judge the system error of the measured instrument through the output of each loading unit after synchronous loading, and is favorable for screening the system error of the equipment.
4. The load method is adopted to test the concrete batching scale, so that the efficiency can be improved, the cost is reduced, the intelligent detection is realized, and considerable social and economic benefits are brought into play.
Drawings
FIG. 1 is an assembly view of a method for load calibration of a concrete batching scale according to the present invention;
fig. 2 is a front view of an assay device of the invention.
Detailed Description
The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.
In the embodiments, it should be understood that the terms "middle", "upper", "lower", "top", "right", "left", "above", "back", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a bolt fixing manner, a pin connecting manner, or the like, which is commonly used in the prior art, and therefore, details thereof are not described in the present embodiment.
Examples
A load calibration method for a concrete batching scale comprises the following steps:
1) the method comprises the following steps of:
A. working sensors 2 are arranged in the middle of four fixing rods on the rectangular batching scale bracket 1, and every two working sensors 2 are arranged correspondingly;
B. placing a weighing hopper 7 in a batching scale bracket 1, wherein fixing lugs in the middle of four side edges of the weighing hopper 7 correspond to the working sensor 2, and the fixing lugs are positioned above the working sensor 2 and press the working sensor 2;
C. the calibrating device is arranged above the working sensor 2 and is fixed with the batching scale bracket 1 through the load support frame 3, and then the fixed block 52 at the lower end of the standard sensor 5 in the batching scale bracket 1 is fixedly clamped with the fixed lug of the weighing hopper 7, so that the accurate supporting pivot point, the consistent, uniform and balanced load and gravity direction are realized, the accurate calibrating purpose is achieved, and the installation can be completed;
2) testing by a calibrating device: after the equipment in the step 1) is installed, connecting the data acquisition and processing device 6 on the calibrating device with a computer, compiling a targeted software control program through the computer, reading out data by adopting a computer automatic control mode, checking the reliability of the data, and improving the intelligent degree;
3) after the test of the calibrating device in the step 2) is finished, the concrete batching scale is calibrated: simultaneously starting the loading device 4 to carry out tensile loading on the weighing hopper 7, simultaneously acquiring data and standard loads of each standard sensor 5 by the computer, and comparing the data and the standard loads with the detected equipment; the maximum allowable error of the standard sensor is not more than 1/3 of the maximum allowable error of the concrete batching scale under the corresponding load, the load fluctuation of the loading device is less than or equal to 1kg/30min, and the measured data is transmitted to the computer to be compared and verified with the weight verification method, so that the verification data can be obtained.
In the verification method of the present embodiment, the load support 3 in step 1) is movably disposed. The loading device 4 in the step 3) carries out synchronous loading through software control in a computer. And the working sensor 2 and the standard sensor 5 in the step 3) are subjected to coaxial equidirectional synchronous pulling force when being loaded.
A load calibration method for a concrete batching scale comprises a batching scale bracket 1, a working sensor 2 which is arranged on the batching scale bracket 1 and fixed with the batching scale bracket 1, a load support frame 3 which is arranged above the working sensor 2 and fixed with the batching scale bracket 1, a loading device 4 which is arranged at the top of the load support frame 3 and fixed with the load support frame 3, a standard sensor 5 which is arranged inside the load support frame 3 and connected with the loading device 4 and used for accurately detecting the material quality, a data acquisition and processing device 6 which is arranged at one side of the load support frame 3 and respectively connected with the working sensor 2, the loading device 4 and the standard sensor 5, and a weighing hopper 7 which is arranged inside the batching scale bracket 1, as shown in figures 1-2. The working sensor 2 adopts a pressure working sensor with the model number PT 124G-111. The lower extreme of load support frame 3 is provided with the cassette 31 of fixing with batching scale support 1, cassette 31 and load support frame 3 integrated into one piece. The loading device 4 adopts a TLA precision loading control system, a limiting seat 41 is arranged on one side of the loading device 4 above the load support frame 3, and a connecting piece 42 is arranged on the part of the loading device 4 in the load support frame 3. The connecting piece 42 is provided with a limit column 411 which is fixed with the connecting piece 42 by welding, correspondingly embedded with the limit seat 41 and used for preventing the standard sensor 5 from vibrating. The standard sensor 5 adopts the high accuracy sensor that the model is 2t, the upper and lower both ends of standard sensor 5 are provided with and connect fixed connecting rod 51 through the nut soon with standard sensor 5, the connecting rod 51 and the connecting piece 42 of upper end connect fixedly through the nut soon, the end of the connecting rod 52 of lower extreme is provided with and connects fixed and be used for the card to hold the fixed block 52 of weighing the hopper soon with connecting rod 51 through the nut. The data acquisition and processing device 6 adopts a software system with the model of DSP.
The technical effects of the invention are mainly reflected in the following aspects:
1. the whole system is a rigid and closed static mechanical balance system by adopting the DSP technology, so that the test data is more accurate;
2. by a software control technology, synchronous loading of loading systems on the sensors is guaranteed, and the test process is more reasonable;
3. besides conventional error processing, the control software can automatically judge the system error of the measured instrument through the output of each loading unit after synchronous loading, and is favorable for screening the system error of the equipment.
4. The load method is adopted to test the concrete batching scale, so that the efficiency can be improved, the cost is reduced, the intelligent detection is realized, and considerable social and economic benefits are brought into play.
The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.
Claims (4)
1. A load calibration method for a concrete batching scale is characterized by comprising the following steps: the method comprises the following steps:
1) the method comprises the following steps of:
A. working sensors are arranged in the middle of the four fixing rods on the rectangular batching scale bracket, and every two working sensors are arranged correspondingly;
B. placing a weighing hopper in a batching scale bracket, wherein fixing lugs in the middle of four side edges of the weighing hopper correspond to the working sensors, and the fixing lugs are positioned above the working sensors and extrude the working sensors;
C. the calibrating device is arranged above the working sensor and is fixed with the batching scale bracket through the load supporting frame, and then the fixed block at the lower end of the standard sensor in the batching scale bracket is clamped and fixed with the fixed lug of the weighing hopper, so that the accurate supporting pivot and the consistent, uniform and balanced load and gravity direction are realized, the aim of accurate calibration is fulfilled, and the installation can be finished;
2) testing by a calibrating device: after the equipment in the step 1) is installed, connecting a data acquisition and processing device on the calibrating device with a computer, compiling a targeted software control program through the computer, reading out data by adopting a computer automatic control mode, checking the reliability of the data, and improving the intelligent degree;
3) after the test of the calibrating device in the step 2) is finished, the concrete batching scale is calibrated: simultaneously starting a loading device to carry out tensile loading on the weighing hopper, simultaneously acquiring data and standard loads of each standard sensor by a computer, and comparing the data and the standard loads with the detected equipment; the maximum allowable error of the standard sensor is not more than 1/3 of the maximum allowable error of the concrete batching scale under the corresponding load, the load fluctuation of the loading device is less than or equal to 1kg/30min, and the measured data is transmitted to the computer to be compared and verified with a weight verification method, so that verification data can be obtained.
2. The method for calibrating the load of the concrete batching scale according to claim 1, characterized in that: the load support frame in the step 1) can be movably arranged.
3. The load verification method for the concrete batching scale according to claim 1, characterized in that: the loading device in the step 3) carries out synchronous loading through software control in a computer.
4. The load verification method for the concrete batching scale according to claim 1, characterized in that: and 3) the working sensor and the standard sensor in the step 3) are subjected to coaxial equidirectional synchronous pulling force when being loaded.
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| CN201810274986.XA CN110154242B (en) | 2018-03-29 | 2018-03-29 | Load verification method for concrete batching scale |
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| CN201810274986.XA CN110154242B (en) | 2018-03-29 | 2018-03-29 | Load verification method for concrete batching scale |
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| CN110154242B true CN110154242B (en) | 2020-02-18 |
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| CN110157155B (en) * | 2018-04-03 | 2022-04-01 | 衢州市质量技术监督检测中心 | Intelligent load calibrating device for concrete batching scale |
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| CN1768252A (en) * | 2003-04-04 | 2006-05-03 | 沃斯特-阿尔派因工业设备制造股份有限公司 | Method and device for calibrating a weighing device, especially a weighing hopper |
| CN201083535Y (en) * | 2007-06-28 | 2008-07-09 | 上海梅山钢铁股份有限公司 | Lightweight counterweight-free calibrating equipment |
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