A kind of three grades of buffers that are suitable for realizing even bufferings at different levels
Technical field
The present invention relates to a kind of buffer, relate in particular to a kind of buffer take elastic gel as buffer medium.
Background technique
In the bumper and absorbing shock field, buffer uses very extensive, and its Main Function is to absorb various impact energys, protection equipment and reduce noise etc.
Grant number CN 202149175 discloses a kind of buffer, it is the two-stage buffer, different with initial minimum force F2cmin by the medium maximum, force F1max in chopped-off head buffer, secondary buffer, with the sequence of operation of control chopped-off head buffer, secondary buffer; And in specification, mention, set the capacity of whole buffer according to impact energy, still, in practical work, because impact energy can be inconstant, might occur changing, so rely on the medium difference to realize the job order of buffers at different levels, be difficult in practice realize.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of three grades of buffers that are suitable for realizing even bufferings at different levels, and these three grades of buffers have solved the variation owing to impact energy, and relies on the difference of medium, is difficult to limit the technical problem of buffer job orders at different levels.
The invention provides a kind of three grades of buffers that are suitable for realizing even bufferings at different levels, comprising: chopped-off head buffer, intergrade buffer and final stage buffer; Described chopped-off head buffer, intergrade buffer, final stage buffer comprise respectively: cylindrical, and be used for filling the cylinder body of buffer medium, opening end sealing at this cylinder body is provided with cylinder cap, air-tight movable is combined with a piston rod in the central through bore of described cylinder cap, the right-hand member 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 cooperates with the inwall movable sealing of described cylinder body; Wherein, the cylinder body of described chopped-off head buffer consists of the piston rod of described intergrade buffer, the cylinder body of described intergrade buffer consists of the piston rod of described final stage buffer, and is equipped with the buffer layer for the buffer sliding block bump on the cylinder body right side of this final stage buffer; The right side of the piston body assembly of described chopped-off head buffer is provided with the pressure transducer for detection of pressure medium, and this pressure transducer links to each other with a processor module; The piston body assembly of buffers at different levels is suitable for when making piston movement, and described processor module is regulated the past regurgitation volume of medium in the corresponding cylinder body, with the speed of control piston motion according to the pressure medium that described pressure transducer detects.
Further, described piston body assembly comprises: described piston body assembly comprises: the left and right piston body of arranged in co-axial alignment, be arranged with the through hole that several are used for the medium axial flow on this left and right piston body, being sealed and matched between the adjacent face of left and right piston body, so that when making piston movement, medium is only realized coming and going by each through hole on the described left and right piston body and is flowed; Be provided with in the described left piston body for the cavity of placing motor, this motor is controlled by described processor module, its rotor is connected in described right piston body, be used for driving this right piston body rotation according to pressure medium, to control the relative position relation of each through hole on the left and right piston body, and then control media flow, i.e. control piston movement velocity.
Compared with prior art, the present invention has following advantage: (1) the present invention has overcome in the prior art because the impact energy fluctuation, and cause the technical problem that multi-stage buffer can't co-ordination, the present invention detects impact energy by pressure transducer, and the medium of suitable adjusting buffers at different levels is toward regurgitation volume, to control the movement velocity of each piston body assembly, make buffer co-ordinations at different levels, avoided certain one-level buffer that may occur because impact energy is excessive, all the other buffers have little time compression, and cause the long-term work of this grade buffer under high pressure conditions, easily cause damage; (2) cooperate by each through hole in the left and right piston body, controlling medium in the corresponding cylinder body toward regurgitation volume, thereby change the shuttle speed of respective pistons, to alleviate the cavity pressure of cylinder bodies at different levels, prolong the buffer life-span; (3) these three grades of buffers need not to consider that medium is different, and the application place is extensive, need not to regulate in addition the buffer job order.
Description of drawings
For content of the present invention is more likely to be clearly understood, below the specific embodiment and by reference to the accompanying drawings of basis, the present invention is further detailed explanation, wherein
The structural representation one of Fig. 1 three grades of buffers of the present invention;
The structural representation two of Fig. 2 three grades of buffers of the present invention;
The structural representation of the piston body assembly in Fig. 3 three grades of buffers of the present invention;
The work schematic diagram of Fig. 4 piston body assembly of the present invention;
The control circuit block diagram of Fig. 5 three grades of buffers of the present invention.
Wherein, the piston rod of the piston rod of the piston rod of 1 chopped-off head buffer, 2 intergrade buffers, 3 final stage buffers, 4 cylinder bodies, 4-1 buffer layer, 5 cylinder caps, 6 chopped-off head buffers, 6-1 intergrade buffer, 6-2 final stage buffer, 7 piston body assemblies, 8 urceolus, 9 pressure transducers, 7-1 left piston body, the right piston body of 7-2,7-3 through hole, 7-4 motor, 7-5 rotor.
Embodiment
The present invention is described in detail below in conjunction with drawings and Examples:
See Fig. 1, Fig. 2 and Fig. 5, a kind of three grades of buffers that are suitable for realizing even bufferings at different levels comprise: chopped-off head buffer 1, intergrade buffer 2 and final stage buffer 3; Described chopped-off head buffer 1, intergrade buffer, final stage buffer 3 comprise respectively: cylindrical, and be used for filling the cylinder body 4 of buffer medium, opening end sealing at this cylinder body 4 is provided with cylinder cap 5, air-tight movable is combined with a piston rod 6 in the central through bore of described cylinder cap 5, the right-hand member of this piston rod 6 is provided with piston body assembly 7, this piston body assembly 7 is suitable at the described cylinder body 4 interior piston movements of doing, and cooperates with the inwall movable sealing of described cylinder body 4; Wherein, the cylinder body 4 of described chopped-off head buffer 1 consists of the piston rod 6-1 of described intergrade buffer 2, the cylinder body 4 of described intergrade buffer 2 consists of the piston rod 6-2 of described final stage buffer 3, and is equipped with the buffer layer 4-1 for the buffer sliding block bump on cylinder body 4 right sides of this final stage buffer 3; The right side of the piston body assembly of described chopped-off head buffer 1 is provided with the pressure transducer 9 for detection of pressure medium, and this pressure transducer links to each other with a processor module; The piston body assembly 7 of buffers at different levels is suitable for when piston movement, and described processor module is regulated the past regurgitation volume of medium in the corresponding cylinder body 4, with the speed of control piston motion according to the pressure medium that described pressure transducer 9 detects.
Urceolus 8 inside bottom (from figure, being seen as its right end face) are fixed in piston rod 6 bottoms of described chopped-off head buffer 1.
F represents the pressure direction that three grades of buffers are subject to, and F1, F2, F3 represent the moving direction of piston in the buffers at different levels.
See Fig. 3 and Fig. 4, described piston body assembly 7 comprises: the left and right piston body 7-2 of arranged in co-axial alignment, be arranged with the through hole that several are used for the medium axial flow on this left and right piston body, being sealed and matched between the adjacent face of left and right piston body, so that when making piston movement, medium is only realized coming and going by each the through hole 7-3 on the described left and right piston body and is flowed; Be provided with in the described left piston body 7-1 for the cavity of placing motor 7-4, this motor 7-4 is controlled by described processor module, its rotor 7-5 is connected in described right piston body 7-2, be used for driving this right piston body 7-2 rotation according to pressure medium, also can be understood as coaxial deflection respective angles, controlling the relative position relation of each through hole on the left and right piston body, and then control media flow, i.e. control piston movement velocity.
The dotted line through hole represents it is through hole 7-3 among the left piston body 7-1 among Fig. 4, the solid line through hole represents the through hole among the right piston body 7-2, arrow represents motor 7-4 sense of rotation, and this Fig. 4 is illustrated in respective through hole docking operation on the fitting surface of left and right piston body, with the flow in the control through hole.
Described right piston body 7-2 is with respect to the coaxial deflection of right piston body 7-2, its slewing area is no more than the diameter of through hole, be that motor 7-4 drives right 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 control respective pistons body assembly 7, and then alleviate cylinder body 4 interior pressure mediums, play the purpose that prolongs the buffer life-span.
Described motor 7-4 can adopt the high direct current generator 7-4 of precision, perhaps stepper motor 7-4.Power pack can adopt powered battery.Battery can be installed in left or the right piston body 7-2, and pressure transducer 9 for example can adopt the gloomy P499VBS-404C in river.
See Fig. 4, if described through hole 7-3 is how individual, its distribution can be concentric circle with left and right piston body 7-2 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, accurately control each motor 7-4 deflection angle in the buffers at different levels by processor module, to control piston body assembly 7 medium flows at different levels, regulate each cylinder body medium pressure.Described processor module can be put into described left piston body or right piston body.Connecting line between described pressure transducer 9, motor 7-4, the control chip can be placed in the cylinder wall of buffers at different levels, perhaps directly places medium.
Obviously, above-described embodiment only is for example of the present invention clearly is described, and is not to be 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 need not also can't give all mode of executions exhaustive.And these belong to apparent variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.