CN104989765A - Working method of three-level buffer - Google Patents

Working method of three-level buffer Download PDF

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Publication number
CN104989765A
CN104989765A CN201510335394.0A CN201510335394A CN104989765A CN 104989765 A CN104989765 A CN 104989765A CN 201510335394 A CN201510335394 A CN 201510335394A CN 104989765 A CN104989765 A CN 104989765A
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CN
China
Prior art keywords
buffer
piston body
piston
cylinder body
medium
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Pending
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CN201510335394.0A
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Chinese (zh)
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不公告发明人
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Individual
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Publication of CN104989765A publication Critical patent/CN104989765A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/30Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium
    • F16F9/303Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium the damper being of the telescopic type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/30Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/22Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with one or more cylinders each having a single working space closed by a piston or plunger
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/50Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/512Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/3207Constructional features
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/3207Constructional features
    • F16F9/3214Constructional features of pistons
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/3207Constructional features
    • F16F9/3235Constructional features of cylinders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Actuator (AREA)

Abstract

The invention relates to a working method of a three-level buffer. The buffer comprises a cylinder body and a cylinder cover for sealing an opening, and a center through hole is arranged at the central axis of the cylinder cover; a piston rod penetrates the center through hole, a piston body assembly is arranged at the top end of the piston rod, and the tail end of the piston rod is connected to the end face of the right side of an outer barrel; when the buffer works, the right end face of the cylinder body serves as a contact face colliding with a sliding block; an electromagnet is arranged in the lateral wall of the cylinder body in the axial direction, and a pressure sensor used for detecting the pressure of a medium is arranged on the right end face of the piston body assembly and is connected with a processor module; when the sliding block collides with the right end face of the cylinder body, the processor module is suitable for controlling a current driving module to output a current matched with a pressure value of the medium according to the pressure value of the medium, and the electromagnet generates a corresponding magnetic field so as to attract the sliding block; and the current driving module is controlled to stop current outputting until the processor module measures that the pressure value of the medium is a balance value so as to release the sliding block.

Description

The method of work of three grades of buffers
The present invention relates to a kind of method of work of buffer, particularly relating to a kind of take elastic gel as the buffer operative method of buffer medium.
In bumper and absorbing shock field, buffer uses very extensive, and its Main Function absorbs various impact energy, proterctive equipment and reduction noise etc.
But slide block is when cushion at collision, because impact energy is excessive, in buffer, piston has little time work, causes slide block to have a rebound phenomenon, and what how to avoid this scene is the technical barrier of related domain.
The technical problem to be solved in the present invention is to provide a kind of method of work of buffer, and the method for work of this buffer solves slide block when shock eliminator, the technical problem that slide block has a rebound.
The invention provides a kind of method of work of buffer, wherein, described buffer comprises: cylindrical, and for filling the cylinder body of buffer medium, be provided with cylinder cap in the opening end sealing of this cylinder body, in the central through bore of described cylinder cap, air-tight movable is combined with a piston rod, and the right-hand member of this piston rod is provided with piston body assembly, this piston body assembly is suitable for making piston movement in described cylinder body, and the end of described piston rod is connected to its right end face of the urceolus of described buffer; When the work of buffering, the right side of described cylinder body, as the surface of contact collided with slide block, this right side is equipped with the cushion pad clashed into for buffer sliding block; Be axially arranged with electromagnet in the sidewall of described cylinder body, the right side of described piston body assembly is provided with the pressure transducer for detecting pressure medium, and this pressure transducer is connected with a processor module.
The method of work of described buffer comprises: when described slide block clashes into the right side of described cylinder body, described processor module is suitable for according to pressure medium value, control a current drives module and export the electric current matched with this pressure medium value, described electromagnet is made to produce corresponding magnetic field, with slide block described in adhesive; Until described processor module records pressure medium value when being equilibrium value, control described current drives module and close output current, make described magnetic field dissipate, to discharge described slide block.
In order to the impact energy of effective buffer sliding block, described buffer is three grades of buffers, 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 for filling the cylinder body of buffer medium, cylinder cap is provided with in the opening end sealing of this cylinder body, in the central through bore of described cylinder cap, air-tight movable is combined with a piston rod, the right-hand member of this piston rod is provided with 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 buffer forms the piston rod of described intergrade buffer, and the cylinder body of described intergrade buffer forms the piston rod of described final stage buffer; When the work of buffering, the cylinder body right side of described final stage buffer is as the surface of contact collided with slide block; Described electromagnet is set around in the sidewall of the cylinder body of described final stage buffer; Described pressure transducer is located on the right side of the piston body assembly of described chopped-off head buffer; The piston body assembly of buffer at different levels is suitable for when making piston movement, the pressure medium that described processor detects according to described pressure transducer, regulates medium in corresponding cylinder body toward regurgitation volume, with the speed of control piston motion.
Further, described piston body assembly comprises: the coaxial left and right piston body arranged, this left and right piston body is arranged with several through holes for medium axial flow, being sealed and matched between the adjacent face of left and right piston body, during to make to make piston movement, medium realizes coming and going flowing by means of only each through hole on described left and right piston body; The cavity for placing motor is provided with in described left piston body, this motor is controlled by described processor module, its rotor is connected to described right piston body, rotate for driving this right piston body according to pressure medium, to control the relative position relation of each through hole on left and right piston body, and then control media flow, i.e. control piston movement velocity.
Further, described piston body assembly comprises: the coaxial left and right piston body arranged, this left and right piston body is arranged with several through holes for medium axial flow, being sealed and matched between the adjacent face of left and right piston body, during to make to make piston movement, medium realizes coming and going flowing by means of only each through hole on described left and right piston body; The cavity for placing motor is provided with in described left piston body, this motor is controlled by described processor module, its rotor is connected to described right piston body, rotate for driving this right piston body according to pressure medium, to control the relative position relation of each through hole on left and right piston body, and then control media flow, i.e. control piston movement velocity.
Described cushion pad is that rubber material is made, and is distributed with the wire gaze parallel with the end face of described cushion pad in cushion pad, occurs aging, cracked to prevent rubber material after multiple impacts.
Described electromagnet has multiple (such as 3 to 5), and is evenly distributed in the sidewall of the cylinder body of described final stage buffer, to make magnetic action power even.
Compared with prior art, tool of the present invention has the following advantages: (1) the present invention produces the magnetic field that matches with surge pressure with adhesive slide block by processor, current drives module, and anti-limited slip block causes bounce-back because impact energy is excessive; (2) instant invention overcomes in prior art due to impact energy fluctuation, and cause multi-stage buffer cannot the technical problem of co-ordination, impact energy is detected by pressure transducer, and the medium of suitable adjustment buffer at different levels is toward regurgitation volume, to control the movement velocity of each piston body assembly, make buffer co-ordination at different levels, avoid certain one-level buffer that may occur excessive because of impact energy, all the other buffers have little time compression, and cause this grade of buffer long-term work easily to cause damage at high pressure conditions; (3) coordinated by each through hole in left and right piston body, to control medium in corresponding cylinder body toward regurgitation volume, thus change the shuttle speed of respective pistons, to alleviate the cavity pressure of cylinder body at different levels, extend the buffer life-span; (4) these three grades of buffers are without the need to considering that medium is different, and application place is extensive, without the need to regulating buffer operative order in addition.
In order to make content of the present invention be more likely to be clearly understood, below basis specific embodiment and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
The structural representation of Fig. 1 buffer of the present invention;
The structural representation one of Fig. 2 three grades of buffers of the present invention;
The structural representation two of Fig. 3 three grades of buffers of the present invention;
The structural representation of the piston body assembly in Fig. 4 three grades of buffers of the present invention;
The operating diagram of Fig. 5 piston body assembly of the present invention;
Fig. 6 control circuit structured flowchart of the present invention.
Below in conjunction with drawings and Examples, the present invention is described in detail:
Embodiment 1
See Fig. 1 and Fig. 6, a kind of method of work of buffer, described buffer comprises: cylindrical, and for filling the cylinder body 4 of buffer medium, cylinder cap 5 is provided with in the opening end sealing of this cylinder body 4, in the central through bore of described cylinder cap 5, air-tight movable is combined with a piston rod 6, and the right-hand member of this piston rod 6 is provided with piston body assembly 7, and this piston body assembly 7 is suitable for making piston movement in described cylinder body 4; The left side of urceolus 8 is fixed in the bottom of described piston rod 6.
The method of work of described buffer comprises: when the work of buffering, and the right side of described cylinder body 4, as the surface of contact collided with slide block 10, this right side is equipped with the cushion pad 4-2 clashed into for buffer sliding block 10; Be axially arranged with electromagnet 4-1 in the sidewall of described cylinder body 4, described piston body assembly 7 right side is provided with the pressure transducer 9 for detecting pressure medium, and this pressure transducer 9 is connected with a processor module; When described slide block 10 clashes into the right side of described cylinder body 4, described processor module is suitable for according to pressure medium value, control a current drives module and export the electric current matched with this pressure medium value, make described electromagnet 4-1 produce corresponding magnetic field, with slide block described in adhesive 10; Until described processor module records pressure medium value when being equilibrium value, control described current drives module and close output current, make described magnetic field dissipate, to discharge described slide block 10.
When described slide block 10 clashes into the right side of described cylinder body 4, described cylinder body 4 is moved to the left, piston body assembly 7 moves right relative to described cylinder body 4, in cylinder body 4, right side buffer medium is subject to larger pressure, when buffer medium flows on the left of piston body assembly 7, the pressure that in cylinder body 4, right side buffer medium is subject to reduces gradually, until the left and right sides pressure medium of described piston body assembly 7 is equal, namely when described pressure medium value is equilibrium value (force value when namely the hydraulic pressure value of the left and right sides of piston body assembly 4 is equal), when piston body assembly 7 quits work, slide block 10 also stops mobile.
Wherein, described processor module adopts single-chip microcomputer, embedded-type ARM module; Pressure transducer 9, such as, can adopt the gloomy P499VBS-404C in river; Described current drives module can adopt alternating current (a.c.) output unit.
Wherein, described processor module adopts single-chip microcomputer, embedded-type ARM module; Pressure transducer 9, such as, can adopt the gloomy P499VBS-404C in river; Described current drives module can adopt alternating current (a.c.) output unit.
The bottom of described piston rod 6 be fixed on urceolus 8 its right end face.
Embodiment 2
See Fig. 2 and Fig. 3, described buffer is three grades of buffers, comprising: 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 for filling the cylinder body 4 of buffer medium, cylinder cap 5 is provided with in the opening end sealing of this cylinder body 4, in the central through bore of described cylinder cap 5, air-tight movable is combined with a piston rod 6, the right-hand member of this piston rod 6 is provided with piston body assembly 7, this piston body assembly 7 is suitable for making piston movement in 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 buffer 1 forms the piston rod 6-1 of described intergrade buffer 2, and the cylinder body 4 of described intergrade buffer 2 forms the piston rod 6-2 of described final stage buffer 3; When the work of buffering, cylinder body 4 right side of described final stage buffer 3 is as the surface of contact collided with slide block 10; Described electromagnet 4-1 is set around in the sidewall of the cylinder body 4 of described final stage buffer 3; Described pressure transducer 9 is located on the right side of the piston body assembly 7 of described chopped-off head buffer 1; The piston body assembly 7 of buffer at different levels is suitable for when making piston movement, the pressure medium that described processor detects according to described pressure transducer 9, regulates medium in corresponding cylinder body 4 toward regurgitation volume, with the speed of control piston motion.
Be fixed on bottom the piston rod 6 of described chopped-off head buffer 1 urceolus 8 its right end face.
F represents the pressure direction that three grades of buffers are subject to, and F1, F2, F3 represent the moving direction of piston in buffer at different levels.
See Fig. 4 and Fig. 5, described piston body assembly 7 comprises: coaxial left piston body 7-1, the right piston body 7-2 arranged, this left piston body 7-1, right piston body 7-2 are arranged with several through hole 7-3 for medium axial flow, being sealed and matched between the adjacent face of described left and right piston body, during to make to make piston movement, medium realizes coming and going flowing by means of only each through hole 7-3 on described left and right piston body; The cavity for placing motor 7-4 is provided with in described left piston body 7-1, this motor 7-4 is controlled by described processor module, its rotor 7-5 is connected to described right piston body 7-2, rotate for driving this right piston body 7-2 according to pressure medium, to control the relative position relation of each through hole 7-3 on left and right piston body, and then control media flow, i.e. control piston movement velocity.
In Fig. 5, dotted line through hole 7-3 represents it is through hole 7-3 in left piston body 7-1, solid line through hole 7-3 represents the through hole 7-3 in right piston body 7-2, arrow represents motor 7-4 sense of rotation, this Fig. 4 represents respective through hole 7-3 docking operation on the fitting surface of left and right piston body 7-2, to control the rate-of flow in through hole.
Described right piston body 7-2 coaxially deflects relative to right piston body 7-2, its slewing area is no more than the diameter of through hole 7-3, also deflection angle can be called, namely 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 object of control media flow, thus play the piston movement speed controlling respective pistons body assembly 7, and then alleviate pressure medium in cylinder body 4, play the object extending the buffer life-span.The direct current generator 7-4 that described motor 7-4 can adopt precision high, or stepper motor 7-4.Power pack can adopt powered battery.Battery can be installed in left or right piston body 7-2.
See Fig. 5, if many of described through hole 7-3, its distribution can be that concentric circle distributes with left and right piston body 7-2.Signal data line can be placed in cylinder body 4 wall of buffer at different levels, or is directly placed in medium.

Claims (1)

1. a method of work for buffer, is characterized in that:
Described buffer comprises:
Cylindrical, and for filling the cylinder body of buffer medium, be provided with cylinder cap in the opening end sealing of this cylinder body, in the central through bore of described cylinder cap, air-tight movable is combined with a piston rod, the right-hand member of this piston rod is provided with piston body assembly, and this piston body assembly is suitable for making piston movement in described cylinder body; The end of described piston rod is connected to its right end face of the urceolus of described buffer;
When the work of buffering, the right side of described cylinder body, as the surface of contact collided with slide block, this right side is equipped with the cushion pad clashed into for buffer sliding block;
Be axially arranged with electromagnet in the sidewall of described cylinder body, the right side of described piston body assembly is provided with the pressure transducer for detecting pressure medium, and this pressure transducer is connected with a processor module;
The method of work of described buffer comprises:
When described slide block clashes into the right side of described cylinder body, described processor module is suitable for according to pressure medium value, controls a current drives module and exports the electric current matched with this pressure medium value, make described electromagnet produce corresponding magnetic field, with slide block described in adhesive; Until described processor module records pressure medium value when being equilibrium value, control described current drives module and close output current, make described magnetic field dissipate, to discharge described slide block;
Described piston body assembly comprises: the coaxial left and right piston body arranged, this left and right piston body is arranged with several through holes for medium axial flow, being sealed and matched between the adjacent face of left and right piston body, during to make to make piston movement, medium realizes coming and going flowing by means of only each through hole on described left and right piston body;
The cavity for placing motor is provided with in described left piston body, this motor is controlled by described processor module, its rotor is connected to described right piston body, rotate for driving this right piston body according to pressure medium, to control the relative position relation of each through hole on left and right piston body, and then control media flow, i.e. control piston movement velocity.
CN201510335394.0A 2013-06-25 2013-06-25 Working method of three-level buffer Pending CN104989765A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310260951.8A CN103307173B (en) 2013-06-25 2013-06-25 Working method of buffer suitable for attracting sliding block in impact process

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CN201510338499.1A Pending CN104989768A (en) 2013-06-25 2013-06-25 Operating method suitable for attracting of buffer of sliding block in impact process
CN201310260951.8A Active CN103307173B (en) 2013-06-25 2013-06-25 Working method of buffer suitable for attracting sliding block in impact process
CN201510338685.5A Pending CN104989767A (en) 2013-06-25 2013-06-25 Buffer working method
CN201510338901.6A Pending CN104989772A (en) 2013-06-25 2013-06-25 Three-level buffer and working method thereof
CN201510335394.0A Pending CN104989765A (en) 2013-06-25 2013-06-25 Working method of three-level buffer
CN201510338505.3A Pending CN104989766A (en) 2013-06-25 2013-06-25 Operating method of buffer

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CN201510338499.1A Pending CN104989768A (en) 2013-06-25 2013-06-25 Operating method suitable for attracting of buffer of sliding block in impact process
CN201310260951.8A Active CN103307173B (en) 2013-06-25 2013-06-25 Working method of buffer suitable for attracting sliding block in impact process
CN201510338685.5A Pending CN104989767A (en) 2013-06-25 2013-06-25 Buffer working method
CN201510338901.6A Pending CN104989772A (en) 2013-06-25 2013-06-25 Three-level buffer and working method thereof

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CN104989768A (en) * 2013-06-25 2015-10-21 蒋超 Operating method suitable for attracting of buffer of sliding block in impact process
CN106641087B (en) * 2015-11-04 2018-10-19 株洲时代新材料科技股份有限公司 A kind of electromagnetic type active vibration absorber
CN114908823B (en) * 2022-07-06 2024-08-13 徐州徐工矿业机械有限公司 Buffering device, buffering method, working device and face shovel excavator

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Application publication date: 20151021