A kind of tea plucking machine that is suitable for bearing for a long time and method of work
Technical field
The present invention relates to a kind of tea plucking machine and method of work, relate in particular to a kind of backpack-type tea-plucking machine and method of work.
Background technique
Existing backpack-type tea-plucking machine, its back frame structure comprises: base and braces; When the operation backpack-type tea-plucking machine, motor can be fixedly mounted on base, due to motor in use, can cause complete machine vibration to a certain degree, and the vibration of complete machine easily causes the backrest vibration-generating, thereby the operator is not felt well after working long hours.
In order to address the above problem, Chinese patent literature CN 201986398 U disclose a kind of backrest of Novel backpack tea leaf picker, and it realizes shock attenuation result by Compress Spring, but engine weight is larger, spring is often compressed, can't upspring, so shock-proof effect is poor.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of backpack-type tea-plucking machine and method of work, and this tea plucking machine and method of work have solved the technical problem that engine operation causes backrest to vibrate, the uncomfortable feeling of having avoided the user to work long hours.
In order to solve the problems of the technologies described above, the invention provides a kind of backpack-type tea-plucking machine, comprising: backrest; This backrest comprises: base, and this base is provided with for alleviating the damping device of engine luggine; Described damping device comprises: at least three vibration dampers distribute around the base Central Symmetry, and for the supporting frame of supporting engines, described vibration damper two ends are fixedly connected with the upper-end surface of base and the lower end surface of supporting frame respectively.
Further, in order to play better damping effect, described vibration damper is the two-stage vibration damper, and this two-stage vibration damper comprises: chopped-off head vibration damper, final stage vibration damper;
Described chopped-off head vibration damper, final stage vibration damper comprise respectively:
Cylindrical, and for filling the cylinder body of buffer medium, opening end sealing at this cylinder body is provided with cylinder cap, in the central through bore of described cylinder cap, air-tight movable is combined with a piston rod, one end of this piston rod is provided with the piston body assembly, this piston body assembly is suitable for making piston movement in described cylinder body, and coordinates with the inwall movable sealing of described cylinder body;
Wherein, the cylinder body of described chopped-off head vibration damper forms the piston rod of described final stage vibration damper;
For the cylinder upper end face of the lower end surface of the urceolus of the piston rod of fixing described chopped-off head vibration damper and final stage vibration damper as respectively as the two ends of described vibration damper;
Be respectively equipped with the pressure transducer for detection of pressure medium on the end face of the piston body assembly of described chopped-off head vibration damper, final stage vibration damper, each pressure transducer is connected with a processor module respectively;
The piston body assembly of vibration dampers at different levels is suitable for when making piston movement, and the pressure medium that described processor module detects according to described pressure transducer is regulated the past regurgitation volume of medium in corresponding cylinder body, with the speed of control piston motion.
Further, described piston body assembly comprises: first, second piston body of arranged in co-axial alignment, be arranged with several through holes for the medium axial flow on this first, second piston body, being sealed and matched between the adjacent face of first, second piston body, so that while making piston movement, medium is only realized coming and going by each through hole on described first, second piston body and is flowed;
In described first piston body, be provided with for placing the cavity of motor, this motor is controlled by described processor module, its rotor is connected in described the second piston body, for drive this second piston body rotation according to pressure medium, to control the relative position relation of each through hole on described first, second piston body, and then control media flow, i.e. control piston movement velocity.
Method of work on the basis of above-mentioned backpack-type tea-plucking machine, wherein, described vibration damper is the two-stage vibration damper, this two-stage vibration damper comprises: chopped-off head vibration damper, final stage vibration damper;
Described chopped-off head vibration damper, final stage vibration damper comprise respectively:
Cylindrical, and for filling the cylinder body of buffer medium, opening end sealing at this cylinder body is provided with cylinder cap, in the central through bore of described cylinder cap, air-tight movable is combined with a piston rod, one end of this piston rod is provided with the piston body assembly, this piston body assembly is suitable for making piston movement in described cylinder body, and coordinates with the inwall movable sealing of described cylinder body;
Wherein, the cylinder body of described chopped-off head vibration damper forms the piston rod of described final stage vibration damper;
For the cylinder upper end face of the lower end surface of the urceolus of the piston rod of fixing described chopped-off head vibration damper and final stage vibration damper as respectively as the two ends of described vibration damper;
Be respectively equipped with the pressure transducer for detection of pressure medium on the end face of the piston body assembly of described chopped-off head vibration damper, final stage vibration damper, each pressure transducer is connected with a processor module respectively;
Described piston body assembly comprises: first, second piston body of arranged in co-axial alignment, be arranged with several through holes for the medium axial flow on this first, second piston body, being sealed and matched between the adjacent face of first, second piston body, so that while making piston movement, medium is only realized coming and going by each through hole on described first, second piston body and is flowed;
In described first piston body, be provided with for placing the cavity of motor, this motor is controlled by described processor module, and its rotor is connected in described the second piston body, for drive this second piston body rotation according to pressure medium; Regulate the past regurgitation volume of medium in corresponding cylinder body, with the control piston movement velocity;
In described damping backpack-type tea-plucking machine, the method for work of vibration damper comprises: the method for work of described vibration damper;
The method of work of described vibration damper comprises:
When engine operation, motor is upper and lower pressure because vibration produces, the pressure medium that described processor module detects according to described pressure transducer is judged the upper and lower force value that motor produces, to regulate the past regurgitation volume of medium in corresponding cylinder body, and then the movement velocity of control piston body assembly;
Wherein, described processor is preset a classification damping threshold value, if the pressure medium value of current detection is not during higher than this classification damping threshold value, the second piston body of the piston body assembly in described processor control chopped-off head vibration damper rotates to open through hole, and then unlatching chopped-off head vibration damper, the second piston body that simultaneously described processor is controlled the piston body assembly in the final stage vibration damper rotates to close through hole, and then closes the final stage vibration damper, to realize the single-stage vibration damper, carries out damping; Simultaneously, scope according to the pressure medium value of current detection, the second piston body that described processor is controlled the piston body assembly in the chopped-off head vibration damper rotates to regulate the movement velocity of the past regurgitation volume of medium with control piston body assembly,, when the pressure medium value increases, the movement velocity of piston body assembly is accelerated, and when the pressure medium value reduces, the movement velocity of piston body assembly slows down;
If the pressure medium value of current detection is during higher than this classification damping threshold value, the second piston body of each piston body assembly in described processor control chopped-off head, final stage vibration damper rotates to open through hole, and then open chopped-off head, final stage vibration damper, carry out damping to realize the two-stage vibration damper simultaneously; Simultaneously, pressure medium value according to current detection, the second piston body that described processor is controlled each piston body assembly in chopped-off head, final stage vibration damper rotates to regulate medium toward regurgitation volume, to control the movement velocity of piston body assemblies at different levels,, when the pressure medium value increases, the movement velocity of piston body assemblies at different levels is accelerated; When the pressure medium value reduces, the movement velocity of piston body assemblies at different levels slows down.
Compared with prior art, the present invention has following advantage: (1) the present invention by arranging damping device between base and supporting frame, effectively reduce the backrest vibration that motor causes, the operator can not felt well for a long time, at least three vibration dampers around the base Central Symmetry distribute not only alleviate upper and lower to vibration, alleviate in addition the vibration of part substantially horizontal; (2) the present invention adopts two-stage vibration damper and pressure transducer cooperating, and the pressure transducer testing precision is high, can rotate to adapt to the motor chattering frequency by accurate regulating piston body assembly; (3) coordinate by each through hole in first, second piston body, to control the past regurgitation volume of medium in corresponding cylinder body, thereby change the shuttle speed of respective pistons, thereby play the effect of damping; (4), while assembling motor, the weight without considering motor, can obtain the weight of motor, indirectly to regulate suitable buffer speed by pressure medium by processor module; (5) the two-stage vibration damper that the present invention adopts is better than one-level vibration damper damping effect.
The accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below the specific embodiment by reference to the accompanying drawings of basis, the present invention is further detailed explanation, wherein
The structural representation of backrest in Fig. 1 backpack-type tea-plucking machine of the present invention;
The structural representation one of Fig. 2 two-stage vibration damper of the present invention;
The structural representation two of Fig. 3 two-stage vibration damper of the present invention;
The structural representation of the piston body assembly in Fig. 4 two-stage vibration damper of the present invention;
The work schematic diagram of Fig. 5 piston body assembly of the present invention;
Fig. 6 control circuit structured flowchart of the present invention.
The wherein piston rod of the piston rod of 1-1 base, 1-2 vibration damper, 1-3 supporting frame, 1-4 damping device, 2 chopped-off head vibration dampers, 3 final stage vibration dampers, 4 cylinder bodies, 5 cylinder caps, 6 chopped-off head vibration dampers, 6-1 final stage vibration damper, 7 piston body assemblies, 8 urceolus, 9 pressure transducers, 7-1 first piston body, 7-2 the second piston body, 7-3 through hole, 7-4 motor, 7-5 rotor.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
Embodiment 1
See Fig. 1, a kind of backpack-type tea-plucking machine comprises: backrest; This backrest comprises: base 1-1, and this base 1-1 is provided with for alleviating the damping device 1-4 of engine luggine; Described damping device 1-4 comprises: at least three vibration damper 1-2 distribute around the base Central Symmetry, and for the supporting frame 1-3 of supporting engines, described vibration damper 1-2 two ends are fixedly connected with the lower end surface of supporting frame 1-3 with the upper-end surface of base 1-1 respectively.
Support frame as described above 1-3 refers to the backrest that Chinese patent literature CN 201986398 U disclose a kind of Novel backpack tea leaf picker, accompanying drawing 2.
See Fig. 2, Fig. 3 and Fig. 6, described vibration damper is the two-stage vibration damper, and this two-stage vibration damper comprises: chopped-off head vibration damper 2, final stage vibration damper 3; Described chopped-off head vibration damper 2, final stage vibration damper 3 comprise respectively: cylindrical, and for the cylinder body 4 of filling buffer medium, opening end sealing at this cylinder body 4 is provided with cylinder cap 5, in the central through bore of described cylinder cap 5, air-tight movable is combined with a piston rod 6, one end of this piston rod 6 is provided with piston body assembly 7, this piston body assembly 7 is suitable at the interior piston movement of doing of described cylinder body 4, and coordinates with the inwall movable sealing of described cylinder body 4; Wherein, the cylinder body 4 of described chopped-off head vibration damper 2 forms the piston rod 6-1 of described final stage vibration damper 3; For cylinder body 4 upper-end surfaces of the lower end surface of the urceolus 8 of the piston rod 6 of fixing described chopped-off head vibration damper 2 and final stage vibration damper 3 as respectively as the two ends of described vibration damper; Be respectively equipped with the pressure transducer 9 for detection of pressure medium on the end face of the piston body assembly of described chopped-off head vibration damper 2, final stage vibration damper 3, each pressure transducer is connected with a processor module respectively; The piston body assembly 7 of vibration dampers at different levels is suitable for when piston movement, and the pressure medium that described processor module detects according to described pressure transducer 9 is regulated the past regurgitation volume of medium in corresponding cylinder body 4, with the speed of control piston motion, to play the effect of damping.
Urceolus 8 inside bottom are fixed in piston rod 6 bottoms of described chopped-off head vibration damper 2.
See Fig. 4 and Fig. 5, described piston body assembly 7 comprises: first, second piston body 7-2 of arranged in co-axial alignment, be arranged with several through holes for the medium axial flow on this first, second piston body, being sealed and matched between the adjacent face of first, second piston body, so that while making piston movement, medium is only realized coming and going by each through hole 7-3 on described first, second piston body and is flowed; In described first piston body 7-1, be provided with for placing the cavity of motor 7-4, this motor 7-4 is controlled by described processor module, its rotor 7-5 is connected in described the second piston body 7-2, for drive this second piston body 7-2 rotation according to pressure medium, also can be understood as coaxial deflection respective angles, to control the relative position relation of each through hole on first, second piston body, and then control media flow, i.e. control piston movement velocity.
In Fig. 5, the dotted line through hole means it is the through hole 7-3 in first piston body 7-1, the solid line through hole means the through hole in the second piston body 7-2, arrow means motor 7-4 sense of rotation, Fig. 5 is illustrated in respective through hole docking operation on the fitting surface of first, second piston body, to control the flow in through hole, to play the effect of damping.
Described the second piston body 7-2 is with respect to the coaxial deflection of the second piston body 7-2, its slewing area is no more than the diameter of through hole, be that motor 7-4 drives the second piston body 7-2 in this diameter range according to pressure medium, do to come and go and rotate, to reach the purpose of control media flow, thereby play the piston movement speed of controlling respective pistons body assembly 7, and then alleviate the interior pressure medium of cylinder body 4, to play the purpose of damping.
Described motor 7-4 can adopt the direct current generator 7-4 that precision is high, or stepper motor 7-4.Power pack can adopt powered battery, and battery can be installed in the first or second piston body, also can adopt by motor and power; Pressure transducer 9, for example can adopt the gloomy P499VBS-404C in river.
See Fig. 5, if described through hole 7-3 is how individual, its distribution can be concentric circle with first, second piston body and distribute.
In order accurately to reach the control purpose, described processor module can adopt single-chip microcomputer, embedded control chip, the pressure signal that described pressure transducer 9 obtains, it is the pressure signal of engine luggine, accurately control each motor 7-4 deflection angle in vibration dampers at different levels by processor module, to control piston body assembly 7 medium flows at different levels, regulate each cylinder body medium pressure.At work, the vibration caused constantly produces upper downforce to described two-stage vibration damper to motor, can make the piston body assembly 7 in this two-stage vibration damper move up and down, and plays damping effect; Due to the mode that adopts the two-stage vibration damper, so damping effect effect with respect to the one-level vibration damper is better.
Described processor module can be put into described first piston body or the second piston body.Connecting line between described pressure transducer 9, motor 7-4, control chip can be placed in the cylinder wall of vibration dampers at different levels, or directly is placed in medium.
Embodiment 2
In described backpack-type tea-plucking machine on above-described embodiment 1 basis, the method for work of vibration damper comprises:
When engine operation, motor is upper and lower pressure because vibration produces, the pressure medium that described processor module detects according to described pressure transducer is judged the upper and lower force value that motor produces, to regulate the past regurgitation volume of medium in corresponding cylinder body, and then the movement velocity of control piston body assembly;
Wherein, described processor is preset a classification damping threshold value, if the pressure medium value of current detection is not during higher than this classification damping threshold value, the second piston body 7-2 of the piston body assembly 7 in described processor control chopped-off head vibration damper 2 rotates to open through hole 7-3, and then unlatching chopped-off head vibration damper 2, the second piston body 7-2 that simultaneously described processor is controlled the piston body assembly 7 in final stage vibration damper 3 rotates to close through hole 7-3, and then closes final stage vibration damper 3, to realize the single-stage vibration damper, carries out damping; Simultaneously, scope according to the pressure medium value of current detection, the second piston body 7-2 that described processor is controlled the piston body assembly 7 in chopped-off head vibration damper 2 rotates to regulate the movement velocity of the past regurgitation volume of medium with control piston body assembly 7,, when the pressure medium value increases, the movement velocity of piston body assembly 7 is accelerated, and when the pressure medium value reduces, the movement velocity of piston body assembly 7 slows down;
If the pressure medium value of current detection is during higher than this classification damping threshold value, the second piston body 7-2 of each piston body assembly 7 in described processor control chopped-off head, final stage vibration damper rotates to open through hole, and then open chopped-off head, final stage vibration damper, carry out damping to realize the two-stage vibration damper simultaneously; Simultaneously, pressure medium value according to current detection, the second piston body 7-2 that described processor is controlled each piston body assembly 7 in chopped-off head, final stage vibration damper 3 rotates to regulate medium toward regurgitation volume, to control the movement velocity of piston body assemblies 7 at different levels,, when the pressure medium value increases, the movement velocity of piston body assemblies 7 at different levels is accelerated; When the pressure medium value reduces, the movement velocity of piston body assemblies 7 at different levels slows down.
Obviously, above-described embodiment is only for example of the present invention clearly is described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all mode of executions.And these belong to apparent variation that spirit of the present invention extended out or change still among protection scope of the present invention.