CN114575202A - Concrete intelligence vibration plastering integration is equipped based on vibration wave signal control - Google Patents
Concrete intelligence vibration plastering integration is equipped based on vibration wave signal control Download PDFInfo
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- CN114575202A CN114575202A CN202011366505.1A CN202011366505A CN114575202A CN 114575202 A CN114575202 A CN 114575202A CN 202011366505 A CN202011366505 A CN 202011366505A CN 114575202 A CN114575202 A CN 114575202A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/005—Making of concrete parts of the track in situ
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to concrete intelligent vibration and plastering integrated equipment based on vibration wave signal control, which mainly comprises a traveling system, a vibration working system, a plastering working system, a data processing center and the like. The vibrating working system and the plastering working system can realize the fine construction of vibrating and plastering under the control of the data processing center; the data processing center processes the collected vibration wave signals and judges the concrete vibration compaction degree according to the change rule of the vibration wave signals; the system of marcing can realize displacement, the accurate adjustment of construction position, realizes long line structure intelligence construction. The invention realizes the automatic and accurate construction of the whole process of concrete vibrating and plastering, is suitable for the concrete engineering with planar structures such as a long-line continuous cast-in-place high-speed railway bed plate, a ballastless track bed, a highway pavement, an airport runway and the like, and is beneficial to improving the concrete construction quality and the construction efficiency.
Description
Technical Field
The invention belongs to the field of concrete construction, and particularly relates to concrete intelligent vibrating and plastering integrated equipment based on vibration wave signal control, which is suitable for efficient and accurate construction of continuous long-line cast-in-place planar structures such as ballastless track concrete bases, track beds and the like.
Background
Vibration is an important link in the concrete construction process, and energy is transferred to concrete mixtures through low-amplitude and high-frequency vibration, so that all particles in the vibration range are subjected to forced vibration. The vibration reduces the viscosity and the internal friction of the concrete mixture within the vibration effective range, changes the fluidity of the slurry, the aggregate particles fall and slide under the action of gravity, and the large bubbles float upwards to be discharged or are vibrated to be crushed under the action of buoyancy, so that the aggregate in the template is arranged compactly, the slurry is filled fully, and the aim of tamping the concrete is finally achieved. Taking the most commonly used plug-in vibrator as an example, the traditional concrete construction site vibration quality control method comprises the steps of fast plug and slow pull, no bubble is blown out on the observation surface, excessive floating slurry is prevented from appearing on the surface and the like, and key parameters such as the plug-in position, the plug-in depth, the vibration time and the like of the vibrating rod are controlled according to experience. However, in the actual construction process, due to the problems of large interference of human factors, extensive management and the like, the conventional method of manually controlling vibration by means of supervision and constructors is difficult to accurately control the concrete vibration work, so that the problems of vibration leakage, insufficient vibration, excessive vibration and the like exist in the construction, the construction quality cannot be guaranteed, and the construction efficiency is difficult to improve.
The concrete vibration compactness can be evaluated through parameters such as hardened density, strength, pore structure and the like, but an evaluation method similar to 'after-the-fact feedback' is very unfavorable for the actual engineering quality control, and if the concrete is not compact after pouring, the problem can be solved only through auxiliary remedial measures. In the actual pouring process, no uniformly determined concrete vibration compactness evaluation index exists, and the vibration construction quality depends on the experience of people, and can only be roughly estimated but not be finely controlled. The method has the advantages that the performance parameters of the new mixture before and after vibration are measured and compared, the compactness of the concrete can be evaluated in real time, but the method is complex in equipment structure, high in operation difficulty and not suitable for site construction.
The research on the automatic intelligent construction of vibration is gradually increased, and the patent automatic vibration equipment replaces manual operation by the automatic vibration equipment, so that the labor burden of workers is greatly reduced, man-machine interaction is realized, the vibration efficiency is improved, but the equipment is difficult to disassemble, assemble and move and is not suitable for a long-line cast-in-place structure. Patent "a III type ballastless track bed plate concrete automatic molding machine of CRTS" can carry the oar plastic to the accurate plastering of III type ballastless track bed plates of CRTS, nevertheless does not possess the function of vibrating, and the structure is complicated, only can be used in specific structure. The intelligent vibration vehicle for the high-speed rail cast-in-place ballastless track realizes the on-site pouring and automatic vibration of the high-speed rail track slab by presetting the vibration time, the insertion depth and the vibration interval, but cannot intelligently judge the concrete compaction degree in real time. In addition, if the GPS device is adopted to test the parameters such as the inserting position, the inserting depth and the inserting angle of the vibrating rod, the image simulation analysis software and the device are adopted to monitor vibrating construction and the like, new technologies are started to be applied to vibrating construction, the vibrating construction state can be intelligently judged and the construction route can be planned through the researches, however, the construction still depends on manpower seriously, the concrete vibrating compactness cannot be judged in real time, and the concrete accurate unmanned intelligent vibrating construction cannot be realized. Need carry out the secondary to the surface after the vibration and receive a process, the construction of plastering relies on the manpower in a large number at present, and the construction progress is slow, and the process joining time is longer.
The crawler-type traveling technology is widely applied to mechanical automation, logistics equipment and the like, and the technology is mature. The method has the advantages of strong terrain adaptability, large capacity, simple and reliable technology and structure, strong reconstruction performance and is an excellent carrier under complex construction environments. The technology for evaluating the compactness of concrete by using the vibration wave signals mainly converts the mechanical impedance value of a mixture according to the vibration response parameters and the exciting force of the concrete in different states, and reflects the vibration compactness of the concrete according to the change characteristics of the impedance value. Therefore, the intelligent vibration and plastering integrated machine is invented based on the demand of unmanned and intelligent vibration construction and by combining the crawler-type machine automation technology, the vibration wave signal evaluation compactness technology and the automatic plastering technology.
Disclosure of Invention
The invention creatively invents concrete intelligent vibrating and plastering integrated equipment based on vibration wave signal control aiming at the current situations that the concrete vibrating compactness lacks evaluation indexes, the construction site conditions are complex, the traditional vibrating plastering concrete construction depends on a large amount of manpower, and the construction process has longer joining time.
The technical scheme of the invention is as follows: the utility model provides a concrete intelligence vibration plastering integration is equipped based on vibration wave signal control which characterized in that: the machine comprises a traveling system, a vibrating working system, a plastering working system and a data processing center; the traveling system comprises a bearing beam 1, a traveling controller, a drive 2 and a traveling crawler 3; the vibrating working system 11 part comprises a hard vibrating rod, a motor and a clamping and plugging device 9 for controlling the spatial position of the vibrating rod which are connected by a hose; the plastering work system comprises a scraping plate 4, a rotating shaft 5 and a contraction curved bar 6, wherein the surface of the scraping plate is provided with a surface vibrator; the data processing center includes a processor 10 fixed outside the vehicle body 7, a vibration wave sensor 8, and a control center 12.
A concrete intelligence vibration plastering integration equipment based on vibration wave signal control, its characterized in that: the using method of the machine comprises the following steps: 1) Determining the number of machines according to the size of a construction surface, and inputting preset parameters; 2) the control center starts a machine, the vibrating rod starts to vibrate and is inserted into the concrete through the clamping and inserting device; 3) the vibration wave sensor collects vibration wave signals, the vibration wave signals are transmitted to the control center by the processor, after the concrete is judged to reach a compact state, the vibrating rod is slowly pulled out of the concrete through the clamping and inserting device, and the vibrating rod is withdrawn and stops vibrating; 4) the control center controls the scraper to be lowered through the rotating shaft and the shrinkage curved rod to be attached to the surface of concrete, the surface vibrator is started, the advancing system controls the machine to travel forwards at a constant speed for a preset distance s, the rear surface vibrator is stopped when the surface vibrator reaches the preset distance, and the rotating shaft and the shrinkage curved rod control the retraction of the scraper; 5) repeating the steps 2) to 4) until the total advancing distance of the machine is more than or equal to the total advancing length preset value b; 6) and finishing the vibration plastering work after each machine finishes the plastering work.
A concrete intelligence vibration plastering integration equipment based on vibration wave signal control, its characterized in that: the vehicle body is installed above the traveling system through detachable fastening bolts, and can be detached for cleaning and maintenance in the non-working stage.
A concrete intelligence vibration plastering integration equipment based on vibration wave signal control, its characterized in that: the control center can collect the vibration response and the exciting force of the concrete, and the mechanical impedance value of the mixture is converted through the complex ratio of the exciting force and the vibration response to reflect the difficult degree of the concrete excited in the vibration state; the vibration compaction degree of the concrete is reflected according to the change characteristic that the impedance value is reduced firstly and then gradually tends to be stable, when the change of the impedance mean value is less than 10% in 3s, the movement of particles in the concrete tends to be stable, air bubbles are discharged, and the concrete vibration compaction is judged.
A concrete intelligence vibration plastering integration equipment based on vibration wave signal control, its characterized in that: the machine can be manually operated through a control center, and automatic control can be carried out according to preset parameters such as the number n of the machine, the structure width a, the advancing length b, the inserting depth h of the vibrating rod, the advancing distance s and the like.
A concrete intelligence vibration plastering integration equipment based on vibration wave signal control, its characterized in that: the clamping and plugging device is a group of rotating shafts with trapezoidal threads, the vibrating rod and the sensor are respectively engraved with the trapezoidal threads, and the concrete is controlled to be plugged in or pulled out through forward and reverse rotation of the rotating shafts.
A concrete intelligence vibration plastering integration equipment based on vibration wave signal control, its characterized in that: the acquisition frequency of the vibration wave sensor is 3000 Hz-6000 Hz, and the acquired data signals can be wirelessly transmitted to the control center.
A concrete intelligence vibration plastering integration equipment based on vibration wave signal control, its characterized in that: the periphery of the scraper is designed into an upward-rolling arc shape, the output frequency of a surface vibrator on the scraper is 50Hz, and the surface concrete can be compacted and the surface can be lifted and plastered.
A concrete intelligence integration equipment of plastering a surface that vibrates based on vibration ripples signal control, its characterized in that: the empty load frequency of the vibrating rod used is 100 Hz-225 Hz.
The mechanism of the invention is as follows: the vibrating rod transfers energy to concrete through vibration waves, the vibration wave energy is attenuated due to the existence of mechanical impedance when the vibrating rod starts vibrating, most of the vibration wave energy is used for overcoming internal friction force, the more far away the vibrating rod, the more obvious the amplitude attenuation is, and the power transfer and dissipation are large. The internal friction force is greatly reduced by continuing vibrating, the concrete is liquefied, large-size bubbles float, the arrangement of particles in the concrete is more compact, the transmission dissipation of the vibration wave is reduced at the moment, the transmission power is improved, and the vibration wave signal tends to be stable at the moment. The mechanical impedance value can reflect the difficulty degree of the concrete excited in the vibration state, the sensor receives vibration wave signals with fixed frequency, the vibration wave signals comprise vibration response parameters and vibration force and are transmitted to the control center, and the control center processes and calculates the complex ratio of the vibration force and the vibration response parameters to convert the mechanical impedance value of the mixture. The vibration compaction degree of the concrete is reflected according to the change characteristic that the impedance value is reduced rapidly and then gradually tends to be stable, when the change of the impedance mean value is less than 10% in 3s, the movement of particles in the concrete tends to be stable, bubbles are discharged, and the concrete vibration compaction is judged. And then pulling out the vibrating rod, and stopping vibrating by the vibrating rod to finish one-time vibrating construction. The surface vibrator passes through the vibration that the motor produced and tamps surface layer concrete, can also carry the oar veneer simultaneously, scrapes off unnecessary slurry, and after vibrating, the scraper blade is through pivot and shrink curved bar control, guarantees with concrete surface horizontal contact, and surface vibrator starts the machine afterwards, and the part of marcing is at the uniform velocity traveles forward, accomplishes the work of wiping one's face.
The invention has the beneficial effects that: 1) high efficiency: the vibrating and plastering are integrated, so that the working procedure of secondary surface collection after vibrating is reduced, the advantages of the crawler-type chassis are exerted, the working procedure connection time is shortened, and the construction efficiency is improved; 2) intelligentization: intelligent judgment of the compaction effect, automatic determination of vibration parameters and automatic completion of vibration plastering work are realized; 3) and (3) precision: the closely knit degree of concrete vibration is accurately judged in real time, and the concrete vibration is avoided not enough or the excessive vibration, promotes the concrete vibration effect to monitor the data of gathering, realize the high-efficient accurate construction of cast-in-place planar structure concrete of long lines such as ballastless track base, ballastless track bed.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below.
Fig. 1 is a schematic view of a traveling part, in which 1 is a load beam, 2 is a traveling controller and a drive, and 3 is a traveling crawler.
Fig. 2 shows an upper working part, 4 is a scraper, 5 is a rotating shaft, 6 is a shrinkage curved bar, 7 is a vehicle body, 8 is a vibration wave sensor, 9 is a clamping and plugging device, 10 is a processor, 11 is a vibration working system, and 12 is a control center.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples with reference to the accompanying drawings. The construction of the CRTSIII ballastless track base plate is taken as an example for specific explanation. The base plate of the CRTSIII type ballastless track is 2900mm wide and 190mm high, and a reinforcing mesh is arranged in the base plate. The key parameters of the machine are selected as shown in the table 1, and the mixing proportion of the used concrete and the working performance thereof are shown in the table 2.
TABLE 1 Intelligent vibrating and plastering integrated machine parameters
TABLE 2 concrete mix proportions and their working properties
The utility model provides a concrete intelligence vibration plastering integration is equipped based on vibration wave signal control which work step:
(1) according to the structure width a =2900mm, 5 groups of intelligent vibration and plastering integrated machines (hereinafter referred to as machines) are equidistantly placed on a poured base plate in a crossed arrangement, the distance between each group of machines is equal and 60cm (2 times of effective vibration radius), and basic data h =190mm, b =5400mm and s =450mm are input into a control center.
(2) The control center sends a vibration command, the vibration working system is started, the vibration rod and the sensor of the clamping and plugging device are downwards inserted for 0.5h (about 95mm below a pouring surface), and when the vibration rod is inserted into the concrete to a preset depth, the vibration rod starts vibration construction.
(3) The vibration sensor receives the wave signal in the vibration state and transmits the signal value to the control center through the processor. When the vibration is carried out for 15s, the signal change value is less than 10%, the vibration is judged to be dense, the vibrating rod and the sensor are controlled by the clamping and plugging device to be slowly withdrawn, and the control center controls the vibration system to be disconnected.
(4) The scraping plate is put down through the rotating shaft and the shrinkage curved bar and is attached to the surface of concrete, after the scraping plate is completely attached, the plastering working part is started, the surface vibrator starts plastering construction according to set parameters, the advancing system of the machine advances forwards for a distance of s =450mm, the surface vibrator stops working after the advancing distance is reached, and the rotating shaft and the shrinkage curved bar control the recovery scraping plate.
(5) And (5) repeating the steps (2) to (4) until the total advancing distance of the machine reaches the preset advancing length value b =5400 mm.
(6) And finishing the vibration plastering work after finishing the plastering work by 5 machines.
The embodiments described above are intended to facilitate a person of ordinary skill in the art to understand and practice the invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments, and those skilled in the art should make modifications and alterations to the present invention based on the disclosure of the present invention
Claims (9)
1. The utility model provides a concrete intelligence vibration plastering integration is equipped based on vibration wave signal control which characterized in that: the machine comprises a traveling system, a vibrating working system, a plastering working system and a data processing center; the traveling system comprises a bearing beam 1, a traveling controller, a drive 2 and a traveling crawler 3; the vibrating working system 11 part comprises a hard vibrating rod, a motor and a clamping and plugging device 9 for controlling the spatial position of the vibrating rod which are connected by a hose; the plastering work system comprises a scraping plate 4, a rotating shaft 5 and a contraction curved bar 6, wherein the surface of the scraping plate is provided with a surface vibrator; the data processing center includes a processor 10 fixed outside the vehicle body 7, a vibration wave sensor 8, and a control center 12.
2. The intelligent vibration and plastering integrated concrete equipment based on vibration wave signal control as claimed in claim 1, wherein: the using method of the machine comprises the following steps: 1) determining the number of machines according to the size of a construction surface, and inputting preset parameters; 2) the control center starts a machine, the vibrating rod starts to vibrate, and the vibrating rod is inserted into concrete through the clamping and inserting device; 3) the vibration wave sensor collects vibration wave signals, the vibration wave signals are transmitted to the control center by the processor, after the concrete is judged to reach a compact state, the vibrating rod is slowly pulled out of the concrete through the clamping and inserting device, and the vibrating rod is withdrawn and stops vibrating; 4) the control center controls the scraper to be lowered through the rotating shaft and the shrinkage curved rod to be attached to the surface of concrete, the surface vibrator is started, the advancing system controls the machine to travel forwards at a constant speed for a preset distance s, the rear surface vibrator is stopped when the surface vibrator reaches the preset distance, and the rotating shaft and the shrinkage curved rod control the retraction of the scraper; 5) repeating the steps 2) to 4) until the total advancing distance of the machine is more than or equal to the total advancing length preset value b; 6) and finishing the vibration plastering work after each machine finishes the plastering work.
3. The intelligent vibration and plastering integrated concrete equipment based on vibration wave signal control as claimed in claim 1, wherein: the vehicle body is installed above the traveling system through detachable fastening bolts, and can be detached for cleaning and maintenance in the non-working stage.
4. The intelligent vibration and plastering integrated concrete equipment based on vibration wave signal control as claimed in claim 1, wherein: the control center can collect the vibration response and the exciting force of the concrete, and the mechanical impedance value of the mixture is converted through the complex ratio of the exciting force and the vibration response to reflect the difficult degree of the concrete excited in the vibration state; the vibration compaction degree of the concrete is reflected according to the change characteristic that the impedance value is reduced firstly and then gradually tends to be stable, when the change of the impedance mean value is less than 10% in 3s, the movement of particles in the concrete tends to be stable, air bubbles are discharged, and the concrete vibration compaction is judged.
5. The intelligent vibration and plastering integrated concrete equipment based on vibration wave signal control as claimed in claim 1, wherein: the machine can be manually operated through a control center, and automatic control can be carried out according to preset parameters such as the number n of the machine, the structure width a, the advancing length b, the inserting depth h of the vibrating rod, the advancing distance s and the like.
6. The intelligent vibration and plastering integrated concrete equipment based on vibration wave signal control as claimed in claim 1, wherein: the clamping and plugging device is a group of rotating shafts with trapezoidal threads, the vibrating rod and the sensor are respectively engraved with the trapezoidal threads, and the concrete is controlled to be plugged in or pulled out through forward and reverse rotation of the rotating shafts.
7. The intelligent vibration and plastering integrated concrete equipment based on vibration wave signal control as claimed in claim 1, wherein: the acquisition frequency of the vibration wave sensor is 3000 Hz-6000 Hz, and the acquired data signals can be wirelessly transmitted to the control center.
8. The intelligent vibration and plastering integrated concrete equipment based on vibration wave signal control as claimed in claim 1, wherein: the periphery of the scraper is designed into an upward-rolling arc shape, the output frequency of a surface vibrator on the scraper is 50Hz, and the surface concrete can be compacted and the surface can be lifted and plastered.
9. The intelligent vibration and plastering integrated concrete equipment based on vibration wave signal control as claimed in claim 1, wherein: the empty load frequency of the vibrating rod used is 100 Hz-225 Hz.
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Cited By (3)
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| CN115012667A (en) * | 2022-06-13 | 2022-09-06 | 中国建筑第八工程局有限公司 | Concrete intelligence vibration press polish equipment |
| CN116482339A (en) * | 2023-03-29 | 2023-07-25 | 成都理工大学 | Vibrating rod and vibrating compactness judging method thereof |
| CN116482339B (en) * | 2023-03-29 | 2024-05-14 | 成都理工大学 | Vibrating rod and vibrating compactness judging method thereof |
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Cited By (4)
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