CN102980548B - Dynamic compaction machine, ramming depth measuring method and device of dynamic compaction machine - Google Patents
Dynamic compaction machine, ramming depth measuring method and device of dynamic compaction machine Download PDFInfo
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- CN102980548B CN102980548B CN201210477177.1A CN201210477177A CN102980548B CN 102980548 B CN102980548 B CN 102980548B CN 201210477177 A CN201210477177 A CN 201210477177A CN 102980548 B CN102980548 B CN 102980548B
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Abstract
The invention provides a dynamic compaction machine, a ramming depth measuring method and a device of the dynamic compaction machine. The ramming depth measuring device of the dynamic compaction machine is used in a non-unhooked type dynamic compaction machine and comprises an angular displacement detecting device and a processor, the angular displacement detecting device is used for detecting rotation angular displacement of a pulley, and the processor is connected with the angular displacement detecting device and calculates ramming depth of a rammer according to the angular displacement of the pulley and a radius of the pulley. The ramming depth measuring device of the dynamic compaction machine can further comprise a display device and/or an alarming device. By means of the dynamic compaction machine, the ramming depth measuring method and the device of the dynamic compaction machine, automatic measuring of ramming depth can be achieved, the measuring is accurate, the error is small, the reliability is high, the using is convenient, automatic supervising can be achieved, construction of the dynamic compaction machine is optimized, and optimum ramming times can be guaranteed.
Description
Technical field
The present invention relates generally to engineering machinery field, specifically, relates to a kind of dynamic compaction machinery tamping depth measuring method and device, and the dynamic compaction machinery that comprises this dynamic compaction machinery tamping depth measurement mechanism.
Background technology
Dynamic compaction machinery is a kind of engineering machinery for material or ground are carried out to shock compaction, is widely used in the construction operation process of industry and covil construction, warehouse, stockyard, harbour, airport, highway and railway roadbed, man-made island etc.After dynamic compaction machinery hangs specified altitude assignment by hammer ram, discharge hammer ram and make its free-falling, thereby can give ground with strong impulsive force and vibration, destroy the soil body and it is carried out to compacting, reduce its compressibility, improve the degree of uniformity of soil layer, reduce the relative settlement that may occur in the future.
The ramming times of hammer ram and tamping depth are the important parameters in the dynamic compaction machinery work progress.In prior art, ramming times and tamping depth are mainly to rely on management personnel's real-time counting and actual measurement to obtain.Be accompanied by the whereabouts of hammer ram, the soil of hammer ram surrounding will swell, and this has brought very large difficulty to ramming the measurement whether put in place; In addition, if to the historical data record in detail in certain construction, can bring very large problem to the quality of construction quality.
Such as, ram intensity and put in place, but because the protuberance of surrounding ground causes the personnel's of managing mistake measurement to make the increase of ramming times, and then make oil consumption increase, meaningless prolongation of activity duration, not only reduced operating efficiency, also caused very large energy dissipation.
Adopt the mode of aforementioned manual record tamping depth, have the following disadvantages:
1) strong rammer building-site condition very severe, surveying instrument and personnel are nearer apart from dynamic compaction machinery, easily cause casualties;
2) human factor that measuring accuracy and data recording accuracy are measured the record affects, and the survey record transmittance process is loaded down with trivial details, needs the surveyor to calculate, judge;
3) manual measurement has reduced operating efficiency, and increases cost of labor;
4) poor at light, while especially needing to carry on construction work at night, measure and be difficult to carry out;
5) partially the conversion of the physical presence of hammer, the vertical measuring point of Sopwith staff institute and the error of perpendicularity of vertical Sopwith staff, and amass soil on the peen face and all make measuring error outwardness, more difficult elimination again;
6) exist and steal hammer leakage hammer phenomenon, can't automatically supervise.
Therefore, how providing a kind of online detection technique in real time, to raise the efficiency, to reduce error, cost-saving, optimize the work progress of dynamic compaction machinery, is those skilled in the art's technical matterss urgently to be resolved hurrily.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of dynamic compaction machinery tamping depth measuring method, can automatically measure tamping depth, improve the accuracy of measurement data, and improve convenience and the security of measuring process.
Dynamic compaction machinery tamping depth measuring method of the present invention, for non-disconnecting type dynamic compaction machinery, described dynamic compaction machinery comprises lift cylinder, rope and hammer ram, described rope winding is on one or more pulleys and connect described hammer ram, when described lift cylinder is flexible described hammer ram correspondingly fall or on carry, described dynamic compaction machinery tamping depth measuring method comprises:
Step 1: detect the angular displacement that described pulley rotates;
Step 2: according to the angular displacement of described pulley and the radius of described pulley, calculate the tamping depth of described hammer ram.
Further, described dynamic compaction machinery tamping depth measuring method specifically comprises:
Step 11: at hammer ram and ground time of contact, detect the first angle of described pulley;
Step 12: in the downward stop motion of hammer ram constantly, detect the second angle of described pulley;
Step 21: according to the first difference of described the second angle, the first angle and the radius of described pulley, calculate the tamping depth of described hammer ram.
Further, calculate the angular velocity of described pulley according to the relation of described angular displacement and time, the moment that described angular velocity starts to descend is hammer ram and ground time of contact, and the moment that described angular velocity is zero is the downward stop motion moment of hammer ram.
Further, described dynamic compaction machinery tamping depth measuring method specifically comprises:
Step 1a: start to discharge constantly at hammer ram, detect the start angle of described pulley;
Step 1b: in the downward stop motion of hammer ram constantly, detect the second angle of described pulley;
Further, also comprise:
Step 3: set and ram standard value, and judgement tamping depth and the described size of ramming between standard value, if tamping depth is greater than the described standard value of ramming, prompting continues to ram; If tamping depth is less than or equal to the described standard value of ramming, prompting has been rammed.
Further, the pulley of described dynamic compaction machinery comprises the arm head leading block, and described step 1 is specially: detect the angular displacement that described arm head leading block rotates.
Another aspect of the present invention, be to provide a kind of dynamic compaction machinery tamping depth measurement mechanism, for non-disconnecting type dynamic compaction machinery, described dynamic compaction machinery comprises lift cylinder, rope and hammer ram, described rope winding is on one or more pulleys and connect described hammer ram, when described lift cylinder is flexible described hammer ram correspondingly fall or on carry, described dynamic compaction machinery tamping depth measurement mechanism comprises:
Angular displacement detecting device, the angular displacement of rotating for detection of described pulley;
Processor, connect described angular displacement detecting device, and, according to the angular displacement of described pulley and the radius of described pulley, calculate the tamping depth of described hammer ram.
Further, also comprise:
Display device, connect described processor, for showing described tamping depth; And/or
Warning device, connect described processor, for according to tamping depth with ram the size cases between standard value, carries out corresponding alarm.
Another aspect of the present invention, also provide a kind of dynamic compaction machinery, and this dynamic compaction machinery is provided with the dynamic compaction machinery tamping depth measurement mechanism of aforementioned any one.
Further, in the buffer zone of the rodless cavity of described lift cylinder, be provided with pressure transducer, when described pressure transducer detects compensator or trimmer pressure and is more than or equal to preset value, the piston rod of controlling described lift cylinder stops action.
Further, the pulley of described dynamic compaction machinery comprises fixed pulley group, running block and arm head leading block, and the first end of described lift cylinder connects described running block for car body, the second end that connects dynamic compaction machinery; Described rope is walked around described arm head leading block after reeling on described fixed pulley group and described running block, and is diverted to the described hammer ram of connection.
Further, described angular displacement detecting device is scrambler, and the axle center of described scrambler is connected with the rotating shaft of described arm head leading block.
Further, also comprise the reel be arranged at rotationally on car body, the head end of described rope is fixed on described reel, but the part folding and unfolding of described rope be wound on described reel.
Further, the quantity of described reel is 2, and the quantity of described rope may be selected to be 1 or 2, realizes respectively single rope stretching state and double-rope state, and at described single rope stretching state, the head end of described rope connects wherein 1 reel, end and connects hammer ram; At described double-rope state, the head end of 2 described ropes connects respectively 1 reel, end all connects hammer ram.
Further, described running block comprises a plurality of many pulleys, and each travelling block all is arranged on same installation shaft, and rotates centered by the axis of this installation shaft, described installation shaft is arranged on mounting bracket, and the second end of described lift cylinder connects described mounting bracket.
The present invention is the established angle displacement detector on the pulley of dynamic compaction machinery, and, according to the tamping depth of the radius calculation hammer ram of the angular displacement of pulley and pulley, can realize the automatic measurement of tamping depth.
As a kind of preferred implementation, the rodless cavity buffer zone setting pressure sensor by lift cylinder, can guarantee that hammer ram is promoted to peak, not there will be the situation of hitting cylinder, and angle displacement measurement all can be in this zero clearing, thereby realize without cumulative errors.
Scrambler of the present invention can be passed to control system in real time by record data, and the present invention also can store real time data, records automatically full and accurate working condition information, saves human cost, convenient inquiry.
Whether the present invention can also automatic decision rams up to standardly, by automatic supervision, has avoided stealing the generation that hammer leaks the hammer phenomenon, has also avoided ramming too much, has optimized work progress, guarantees ramming times the best.
The accompanying drawing explanation
Fig. 1 is the process flow diagram of the dynamic compaction machinery tamping depth measuring method of first embodiment of the invention;
Fig. 2 is the schematic diagram that the tamping depth of one embodiment of the invention is measured;
The graph of a relation of the angular velocity of pulley and time when Fig. 3 is the strong rammer operation;
Fig. 4 is the process flow diagram of the dynamic compaction machinery tamping depth measuring method of second embodiment of the invention;
Fig. 5 is the structured flowchart of the dynamic compaction machinery tamping depth measurement mechanism of one embodiment of the invention;
Fig. 6 is the structural representation of the dynamic compaction machinery of one embodiment of the invention;
Fig. 7 is the structural representation of determining running block of the present invention's dynamic compaction machinery embodiment illustrated in fig. 6;
Fig. 8 a is the structure principle chart of the single rope stretching state of one embodiment of the invention;
Fig. 8 b is the structure principle chart of one embodiment of the invention double-rope state;
Fig. 9 is the structural representation of the lift cylinder of one embodiment of the invention.
Embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.
Set forth in the following description a lot of details so that fully understand the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following public specific embodiment.
Basic thought of the present invention is to provide a kind of dynamic compaction machinery and tamping depth measurement mechanism thereof, and this device completes measuring process by dynamic compaction machinery tamping depth measuring method described herein.Understanding for the ease of those skilled in the art to technical scheme, this paper first is described dynamic compaction machinery tamping depth measuring method.
It shown in Fig. 1, is the process flow diagram of the dynamic compaction machinery tamping depth measuring method of first embodiment of the invention.This dynamic compaction machinery tamping depth measuring method is for non-disconnecting type dynamic compaction machinery.This non-disconnecting type dynamic compaction machinery comprises lift cylinder 1, rope 5 and hammer ram G, and its structure can be with reference to figure 2.Rope 5 is wound on one or more pulleys and connects hammer ram G, when lift cylinder 1 is flexible hammer ram G correspondingly fall or on carry, this dynamic compaction machinery has adopted the hoisting gear of hydraulic oil cylinder driving.
This dynamic compaction machinery tamping depth measuring method comprises:
Step 1: detect the angular displacement that pulley rotates;
This step 1 can detect any one or several pulley of dynamic compaction machinery hoisting gear, as the fixed pulley in the travelling block in running block 3 (with reference to figure 2), fixed pulley group 2, arm head leading block 4 etc.The angular displacement that preferred detection arm head leading block 4 rotates.
Step 2: according to the angular displacement of pulley and the radius of pulley, calculate the tamping depth △ H of hammer ram G.
In the first embodiment shown in Fig. 1, dynamic compaction machinery tamping depth measuring method specifically comprises:
Step 11: at hammer ram and ground time of contact t1, detect the first angle θ 1 of pulley;
Step 12: at t2 of the downward stop motion moment of hammer ram, detect the second angle θ 2 of pulley;
Step 21: according to the first difference (θ 2-θ 1) of the second angle θ 2, the first angle θ 1 and the radius r of pulley, calculate the tamping depth △ H of hammer ram G.
The present invention can determine the downward stop motion of aforementioned hammer ram and ground time of contact t1 and hammer ram t2 constantly in several ways.As a kind of embodiment, control system, according to angular displacement and the time relationship of record, to the angular displacement differentiate of record, calculates the angular velocity w that pulley rotates, and can draw pulley angular velocity w as shown in Figure 3 and the graph of a relation of time T.
With reference to figure 3, belong to accelerated motion during hammer ram G free-falling, at hammer ram and ground time of contact t1, angular velocity starts to descend; Then hammer ram G starts to ram ground, does retarded motion, until t2 of the downward stop motion moment of hammer ram, angular velocity is kept to zero.
With reference to figure 6, at hammer ram and ground time of contact t1, the rope stretching length of rope 5 is H1; At t2 of the downward stop motion moment of hammer ram, the rope stretching length of rope 5 is H2, the computing formula of tamping depth: △ H=H2-H1=θ 2r-θ 1r=(θ 2-θ 1) r.This computing formula can also be carried out various corrections.
Further, in the first embodiment shown in Fig. 1, dynamic compaction machinery tamping depth measuring method also comprises:
Step 3: set and ram standard value H0, and judge tamping depth △ H and ram the size between standard value H0, if tamping depth △ H is greater than, ram standard value H0, prompting continues to ram; Ram standard value H0 if tamping depth △ H is less than or equal to, prompting has been rammed.
Whether this step can automatic decision be rammed up to standardly, when tamping depth △ H is very little, while being difficult to ground be tamped downwards again, reaching and rams requirement.By automatic supervision, avoided stealing the generation that hammer leaks the hammer phenomenon, also avoided ramming too much, optimized work progress, guarantee ramming times the best.
In addition, the first embodiment also comprises the step that shows tamping depth △ H.Operating personnel can know the tamping depth △ H that operation is rammed in each time intuitively, and in order to construct, strategy provides foundation.The demonstration of tamping depth △ H can be both that numeral shows, can be also that mimic diagram shows.
As the second embodiment of the present invention, as shown in Figure 4, dynamic compaction machinery tamping depth measuring method specifically comprises:
Step 1a: start to discharge t0 constantly at hammer ram, detect the start angle θ 0 of pulley;
Step 1b: at t2 of the downward stop motion moment of hammer ram, detect the second angle θ 2 of pulley;
As previously mentioned, it is definite that hammer ram stops the moment that t2 is preferably zero according to angular velocity constantly downwards.Hammer ram starts to discharge t0 constantly can be determined according to the moment of start-up operation switch, also can determine according to angular velocity moment increased of starting from scratch.
Rope stretching length when each time rammed can adopt following formula: H
n=［ θ 2
(n)-θ 0
(n)r.Tamping depth is: △ H=H
n-H
n-1.It should be noted that, for the second embodiment, the measurement of each tamping depth △ H of aforementioned the first embodiment all can complete independently, thereby realizes the measurement without cumulative errors.
Similarly, second embodiment of the invention also can comprise judging whether tamping depth △ H is less than or equal to the step of ramming standard value H0, and the step that shows tamping depth △ H.Owing to illustrating above, do not repeat them here.
It shown in Fig. 5, is the structured flowchart of the dynamic compaction machinery tamping depth measurement mechanism of one embodiment of the invention.This dynamic compaction machinery tamping depth measurement mechanism is used for non-disconnecting type dynamic compaction machinery, and comprises angular displacement detecting device 71 and processor 72.Wherein, the angular displacement that this angular displacement detecting device 71 rotates for detection of pulley, its angular displacement signal that pulley can be rotated is converted into electric signal, and exports processor 72 to.According to angular displacement detecting device 71 type differences, it can be installed on the diverse location of pulley.This angular displacement detecting device 71 is preferably scrambler, and the axle center of this scrambler is connected with the rotating shaft of pulley.
These processor 72 joint angle displacement detectors 71, and, according to the angular displacement of pulley and the radius of pulley, calculate the tamping depth △ H of hammer ram G.The method of processor 72 calculating tamping depth △ H can be with reference to the embodiment of aforementioned dynamic compaction machinery tamping depth measuring method.
Further, this dynamic compaction machinery depth measurement device can also comprise display device 73 and/or warning device 74.Wherein, this display device 73 connects processor 72, and for showing tamping depth △ H, this display device 73 both can have been carried out numeral and shown, also can carry out the mimic diagram demonstration.
This warning device 74 connects processors 72, for according to tamping depth △ H with ram the size cases between standard value H0, carries out corresponding alarm.This warning device 74 can be the acousto-optic parts such as hummer or pilot lamp, and correspondingly alerting signal can be the buzzing of hummer, the luminous or flicker of pilot lamp.Such as, when tamping depth △ H is less than or equal to while ramming standard value, the hummer sounding alarm, thus alert is rammed up to standard completing.
In addition, the invention also discloses a kind of dynamic compaction machinery that comprises aforementioned dynamic compaction machinery depth measurement device, the structure of this dynamic compaction machinery as shown in Figure 6.This dynamic compaction machinery also comprises lift cylinder 1, rope 5, hammer ram G and pulley, and each several part can be with reference to above stated specification.
As shown in Figure 2, the pulley of this dynamic compaction machinery preferably includes fixed pulley group 2, running block 3 and arm head leading block 4, and car body, the second end that the first end of lift cylinder 1 connects dynamic compaction machinery connect running block 3; Rope 5 is preferably walked around arm head leading block 4 after reeling on fixed pulley group 2 and running block 3 from bottom to top, and is diverted to and connects from the top down hammer ram G.Aforementioned can be both straight up and down up and down, can be also the above-below direction of inclination certain angle.
Arm head leading block 4 can arrange one or two according to the structure of arm head.In the embodiment shown in Fig. 2 and Fig. 6, arm head leading block 4 comprises two, and rope 5 is walked around two arm head leading blocks 4 successively.
Fixed pulley group 2 of the present invention can comprise one or more fixed pulleys, and similarly, running block 3 also can comprise one or more travelling block.In order to increase multiplying power, fixed pulley group 2 of the present invention preferably includes a plurality of fixed pulleys, and the travelling block quantity of running block 3 and the quantity of fixed pulley are complementary, and the stroke of hammer ram G is N times of lift cylinder 1 stroke, and wherein N is greater than 1 integer.
In the embodiment shown in Figure 2, fixed pulley and travelling block include 3, N=6, and the stroke of lift cylinder 1 can remain on rational scope, has reduced manufacturing difficulty, has advantages of easy to implement.In the embodiment shown in fig. 7, fixed pulley comprises 3, and travelling block comprises 4, N=8, and the stroke of lift cylinder 1 equally also can remain on rational scope.
On hammer ram G, carry with dropping process in, each fixed pulley all rotates accordingly, each travelling block, when being rotated, carry out translation under the effect of lift cylinder 1.Can be connected by multiple possible link between running block 3 and lift cylinder 1, can independently be installed between each travelling block, also can integral installation.
In the embodiment shown in fig. 7, each travelling block of the present invention all is arranged on same installation shaft 61, and rotates centered by the axis of this installation shaft 61, and installation shaft 61 is arranged on mounting bracket 62, the second end connection support 62 of lift cylinder 1.The direction of lift cylinder 1 stretching motion is vertical with the axis direction of this installation shaft 61.By the push-and-pull action of 1 pair of mounting bracket 62 of lift cylinder, can realize the motion of running block 3 integral body.
It should be noted that, because rope 5 ends of the present invention connect hammer ram G, under long-term work, the parts that rope 5 connects hammer ram G easily produce wearing and tearing.If the length of this rope 5 can't be adjusted,, after end fray lost efficacy, need to change the whole-root rope rope, use cost is high.
In view of this, embodiment shown in Fig. 8 a of the present invention and Fig. 8 b also provides a kind of technical scheme of capable of regulating rope rope stretching length, comprise the reel 90 be arranged at rotationally on car body, the head end of rope 5 is fixed on reel 90, but the part folding and unfolding of rope 5 be wound on reel 90.This reel 90 can be arranged on the getting-on platform of dynamic compaction machinery, both can adopt hand rotation, also can adopt mechanism's drivings such as oil motor.After rope 5 connects the end fray of hammer ram G, can cut off the part that end has worn and torn, the rope 5 be wound on reel 90 is emitted, reconnect hammer ram G, can compensate the partial-length of cutting, without changing the whole-root rope rope, can guarantee the rope stretching amount of rope 5, guarantee to ram requirement.
In the transportation of dynamic compaction machinery, need to be by the separately transportation of the boom system of dismounting.For aforementioned reel 90, can also when transportation, rope 5 be packed up, the very convenient rope closing of this reel 90, avoid the random bulk storage of rope on platform, has advantages of and be artistically decorated.
Further, for same dynamic compaction machinery, by changing baudrier, can realize ramming and can expand.The present invention can also realize the double-rope state shown in the single rope stretching state shown in Fig. 8 a and Fig. 8 b.The hammer ram G weight of mating during single rope stretching state is that M(is as 20 tons), the hammer ram G weight of mating during the double-rope state can reach 2M(as 40 tons), in hoisting depth, under identical prerequisite, can make rammer to be doubled.Correspondingly, the quantity of the reel 90 arranged on car body is 2, and the quantity of rope 5 may be selected to be 1 or 2, realizes respectively single rope stretching state and double-rope state.
At the single rope stretching state shown in Fig. 8 a, the head end of rope 5 connects wherein 1 reel 90, end and connects hammer ram G; Other 1 reel 90 is in idle state.Rope 5 is also reeled on fixed pulley group 2 and running block 3, and can realize that rope 5 turns to that (aforementioned angular displacement detecting device 71 also can be arranged on leading block through leading block.) in the state shown in this figure, the quantity of travelling block is 4, N=8.
At the double-rope state shown in Fig. 8 b, the head end of 2 ropes 5 connects respectively 1 reel 90, end all connects hammer ram G.Each rope 5 is also reeled on fixed pulley group 2 and running block 3, and can realize that rope 5 turns to through leading block.In the state shown in this figure, the travelling block quantity of each rope 5 processes is 2, N=4.2 reels 90 can be adjusted each rope lengths respectively, thereby guarantee the consistance of 2 rope rope stretching length and action, improve the functional reliability of dynamic compaction machinery.
For the dynamic compaction machinery of aforementioned structure, action control for the ease of lift cylinder 1, can in the buffer zone of the rodless cavity of lift cylinder 1, be provided with pressure transducer 10 as shown in Figure 9, when pressure transducer 10 detects compensator or trimmer pressure and is more than or equal to preset value, the piston rod of controlling lift cylinder 1 stops action.All can retract and put in place when this pressure transducer 10 can guarantee that lift cylinder 1 is rammed operation at every turn, hammer ram G is promoted to peak, not there will be the situation of hitting cylinder, and angle displacement measurement all can be in this zero clearing, thereby realization is without the measurement of cumulative errors.
Angular displacement detecting device 71 is preferably scrambler, and the axle center of scrambler is connected with the rotating shaft of arm head leading block 4.Scrambler can directly or indirectly be connected with arm head leading block 4.As a kind of embodiment, scrambler connects arm head leading block 4 by gear drive.By adopting high-precision rotary encoder as angular displacement detecting device 71, can realize the accurate measurement of tamping depth △ H.
In sum, the present invention is established angle displacement detector 71 on the pulley of dynamic compaction machinery, and according to the tamping depth △ H of the radius calculation hammer ram G of the angular displacement of pulley and pulley.Compared with prior art, the present invention has the following advantages:
1) measurement is accurate, error is little
The present invention can adopt high-precision rotary encoder as angular displacement detecting device 71, thereby realizes the accurate measurement of tamping depth △ H; And, by the rodless cavity buffer zone setting pressure sensor 10 at lift cylinder 1, can guarantee when lift cylinder 1 is rammed operation at every turn all can retract and put in place, hammer ram G is promoted to peak, not there will be the situation of hitting cylinder, and angle displacement measurement all can be in this zero clearing, thereby realize without cumulative errors.
2) reliability is high, easy to use
Scrambler of the present invention can be passed to control system in real time by record data, and computation process is carried out in control system, convenience of calculation, and debugging is simple, and reliability is high; In addition, the present invention also can store real time data, records automatically full and accurate working condition information, saves human cost, convenient inquiry.
3) automatic supervision, Optimizing construction
The present invention can set and ram standard value, and contrasts the tamping depth △ H that each time ram and ram the size between standard value, by automatic supervision, has avoided stealing the generation that hammer leaks the hammer phenomenon; In addition, after the strong rammer operation is up to standard, avoided, because ramming the problems such as the too much activity duration prolongation caused, energy consumption increase, having optimized work progress, guaranteed ramming times the best.
Therefore, the invention has the beneficial effects as follows apparent.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (15)
1. a dynamic compaction machinery tamping depth measuring method, for non-disconnecting type dynamic compaction machinery, it is characterized in that, described dynamic compaction machinery comprises lift cylinder (1), fixed pulley group (2), running block (3), rope (5) and hammer ram (G), described rope (5) is wound on a plurality of pulleys and connects described hammer ram (G), when described lift cylinder (1) is flexible described hammer ram (G) correspondingly fall or on carry, described dynamic compaction machinery tamping depth measuring method comprises:
Step 1: detect the angular displacement that described pulley rotates;
Step 2: according to the angular displacement of described pulley and the radius of described pulley, calculate the tamping depth (△ H) of described hammer ram (G).
2. dynamic compaction machinery tamping depth measuring method according to claim 1, is characterized in that, specifically comprises:
Step 11: at hammer ram and ground time of contact (t1), detect first angle (θ 1) of described pulley;
Step 12: in the downward stop motion moment of hammer ram (t2), detect second angle (θ 2) of described pulley;
Step 21: according to first difference (θ 2-θ 1) of described the second angle (θ 2), the first angle (θ 1) and the radius of described pulley, calculate the tamping depth (△ H) of described hammer ram (G).
3. dynamic compaction machinery tamping depth measuring method according to claim 2, it is characterized in that, calculate the angular velocity of described pulley according to the relation of described angular displacement and time, the moment that described angular velocity starts to descend is hammer ram and ground time of contact (t1), and the moment that described angular velocity is zero is the downward stop motion of hammer ram (t2) constantly.
4. dynamic compaction machinery tamping depth measuring method according to claim 1, is characterized in that, specifically comprises:
Step 1a: start to discharge (t0) constantly at hammer ram, detect the start angle (θ 0) of described pulley;
Step 1b: in the downward stop motion moment of hammer ram (t2), detect second angle (θ 2) of described pulley;
Step 2a: according to second difference (θ 2-θ 0) of described the second angle (θ 2), start angle (θ 0) and the radius of described pulley, calculate the rope stretching length of described rope (5);
Step 2b: ram according to this rope stretching length difference of ramming with last time, draw this tamping depth of ramming (△ H).
5. according to the described dynamic compaction machinery tamping depth of claim 1-4 any one measuring method, it is characterized in that, also comprise:
Step 3: set and ram standard value (H0), and judgement tamping depth (△ H) and the described size of ramming between standard value (H0), if tamping depth (△ H) is greater than the described standard value (H0) of ramming, prompting continues to ram; If tamping depth (△ H) is less than or equal to the described standard value (H0) of ramming, prompting has been rammed.
6. according to the described dynamic compaction machinery tamping depth of claim 1-4 any one measuring method, it is characterized in that, the pulley of described dynamic compaction machinery comprises arm head leading block (4), and described step 1 is specially: detect the angular displacement that described arm head leading block (4) rotates.
7. a dynamic compaction machinery tamping depth measurement mechanism, for non-disconnecting type dynamic compaction machinery, it is characterized in that, described dynamic compaction machinery comprises lift cylinder (1), fixed pulley group (2), running block (3), rope (5) and hammer ram (G), described rope (5) is wound on a plurality of pulleys and connects described hammer ram (G), when described lift cylinder (1) is flexible described hammer ram (G) correspondingly fall or on carry, described dynamic compaction machinery tamping depth measurement mechanism comprises:
Angular displacement detecting device (71), the angular displacement of rotating for detection of described pulley;
Processor (72), connect described angular displacement detecting device (71), and, according to the angular displacement of described pulley and the radius of described pulley, calculate the tamping depth (△ H) of described hammer ram (G).
8. dynamic compaction machinery tamping depth measurement mechanism according to claim 7, is characterized in that, also comprises:
Display device (73), connect described processor (72), for showing described tamping depth (△ H); And/or
Warning device (74), connect described processor (72), for according to tamping depth (△ H) with ram the size cases between standard value (H0), carries out corresponding alarm.
9. a dynamic compaction machinery, is characterized in that, is provided with the described dynamic compaction machinery tamping depth of claim 7 or 8 measurement mechanism.
10. dynamic compaction machinery according to claim 9, it is characterized in that, be provided with pressure transducer (10) in the buffer zone of the rodless cavity of described lift cylinder (1), when described pressure transducer (10) detects compensator or trimmer pressure and is more than or equal to preset value, the piston rod of controlling described lift cylinder (1) stops action.
11. dynamic compaction machinery according to claim 9, it is characterized in that, the pulley of described dynamic compaction machinery comprises fixed pulley group (2), running block (3) and arm head leading block (4), and the first end of described lift cylinder (1) connects described running block (3) for car body, the second end that connects dynamic compaction machinery; Described rope (5), after described fixed pulley group (2) and the upper coiling of described running block (3), is walked around described arm head leading block (4), and is diverted to connection described hammer ram (G).
12. dynamic compaction machinery according to claim 11, is characterized in that, described angular displacement detecting device (71) is scrambler, and the axle center of described scrambler is connected with the rotating shaft of described arm head leading block (4).
13. dynamic compaction machinery according to claim 9, it is characterized in that, also comprise the reel (90) be arranged at rotationally on car body, it is upper that the head end of described rope (5) is fixed in described reel (90), described rope (5) but the part folding and unfolding be wound on described reel (90).
14. dynamic compaction machinery according to claim 13, it is characterized in that, the quantity of described reel (90) is 2, the quantity of described rope (5) may be selected to be 1 or 2, realize respectively single rope stretching state and double-rope state, at described single rope stretching state, the head end of described rope (5) connects wherein 1 reel (90), end and connects hammer ram (G); At described double-rope state, the head end of 2 described ropes (5) connects respectively 1 reel (90), end all connects hammer ram (G).
15. dynamic compaction machinery hoisting gear according to claim 11, it is characterized in that, described running block (3) comprises a plurality of travelling block, each travelling block all is arranged on same installation shaft (61), and rotate centered by the axis of this installation shaft (61), it is upper that described installation shaft (61) is arranged at mounting bracket (62), and the second end of described lift cylinder (1) connects described mounting bracket (62).
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| CN103344208B (en) * | 2013-05-30 | 2016-08-24 | 三一重工股份有限公司 | Cylinder type dynamic compaction machinery tamping depth measuring method, device and dynamic compaction machinery |
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| CN103241673B (en) * | 2013-06-03 | 2016-04-13 | 徐工集团工程机械股份有限公司 | A kind of list rope double hoisting device of dynamic compaction machinery and dynamic compaction machinery |
| WO2014198102A1 (en) * | 2013-06-14 | 2014-12-18 | 湖南三一智能控制设备有限公司 | Dynamic compactor, and method and device for measuring compaction depth of oil cylinder type dynamic compactor |
| CN103309276A (en) * | 2013-06-17 | 2013-09-18 | 山东科技大学 | Auto-control and auto-detection system for non-decoupled dynamic compaction machine |
| CN103510503B (en) * | 2013-09-30 | 2015-07-15 | 中国地质大学（北京） | Method for monitoring rammed point soil stabilization state vibration in real time |
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| CN109099820A (en) * | 2018-08-22 | 2018-12-28 | 中国二十二冶集团有限公司 | Hole depth detection device and method |
| CN111472341A (en) * | 2020-04-15 | 2020-07-31 | 天津朗硕机器人科技有限公司 | Depth detection device of dynamic compaction machine and measurement method thereof |
| CN112082525B (en) * | 2020-08-12 | 2022-07-12 | 重庆文理学院 | Laying device and working method of loess geological tunnel ground surface settlement measuring point rods |
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| CN2677881Y (en) * | 2004-01-12 | 2005-02-09 | 中华岩土工程有限公司 | Automatic measuring recording analysing device for strong rammer work parameter |
| CN201546244U (en) * | 2009-11-27 | 2010-08-11 | 长安大学 | Dynamic compaction depth detecting system based on photoelectric encoder |
| CN201990998U (en) * | 2011-02-14 | 2011-09-28 | 上海三一科技有限公司 | Novel heavy tamping machine |
| CN102677649B (en) * | 2011-03-18 | 2014-09-17 | 上海三一科技有限公司 | Automatic regulator for brake of dynamic compactor |
| CN202099794U (en) * | 2011-05-03 | 2012-01-04 | 大连益利亚工程机械有限公司 | Compacting settlement volume detecting system for dynamic compaction machine |
| CN202947719U (en) * | 2012-11-22 | 2013-05-22 | 三一重工股份有限公司 | Dynamic compactor and ramming depth measurement device thereof |
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