CN103192846A - Method and device for storing and utilizing train brake energy - Google Patents
Method and device for storing and utilizing train brake energy Download PDFInfo
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- CN103192846A CN103192846A CN2013101335760A CN201310133576A CN103192846A CN 103192846 A CN103192846 A CN 103192846A CN 2013101335760 A CN2013101335760 A CN 2013101335760A CN 201310133576 A CN201310133576 A CN 201310133576A CN 103192846 A CN103192846 A CN 103192846A
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Abstract
The invention discloses a method and a device for storing and utilizing train brake energy. Speed reducing is performed through three-lever gear transmission, gear rotation is changed into gear translation through gear rack transmission, and spring contracting energy storage and extending energy discharge are achieved by connection of a rack and a spring. A train energy-saving brake device which utilizes spring contraction to store energy during brake and utilizes spring extension to output power during travelling is provided, and is simple in structure, low in production cost, energy-saving and efficient. By the device, train brake energy storage and utilization are achieved conveniently, flexibly and reliably, and promising popularization prospect is achieved.
Description
Technical field
The present invention relates to a kind of method and device thereof of train braking, particularly a kind of storage of train braking energy with utilize technology.
Background technology
In science and rapid development of economy, people's living standard improves constantly, and track traffic has become the important vehicle.The train quality is big, and running velocity is fast, needs very big braking energy when they are braked.
Regenerative brake is the brake mode that can realize that at present braking energy reclaims.Motor machine useless or N/R or harmful inertia rotate the kinetic energy that produces and be converted into electric energy, and feedback grid produces lock torque simultaneously, makes motor machine stop useless inertia fast and rotates.Motor machine is the device that has movable parts that an electric energy is converted into mechanical energy, and is common for rotatablely moving, for example electrical motor.And this conversion process commonly changes to transmit energy by electromagnetic field energy and transform energy, from more intuitive mechanics angle, is the variation of magnetic field size.Motor connecting power produces electric current, has made up magnetic field.The electric current of alternation has produced alternating magnetic fields, when windings are arranged on physical space at an angle, will produce circular rotating field.Motion is relative, equaling this magnetic field is cut by the conductor in its space behavior scope, so induced electric motive force has been set up at the conductor two ends, by conductor itself and link, constitute the loop, produced electric current, formed a current, this current will be subjected to the effect of power in rotating field, this power finally becomes the power in the moment of torsion of electrical motor output.When the excision power supply, electrical motor inertia rotates, switch by circuit this moment, provide Comparatively speaking lower-powered excitation source in rotor, produce magnetic field, this magnetic field is by the physics rotation of rotor, the winding of cutting stator, so stator induces electro-motive force, this electro-motive force inserts electrical network by electric installation, is the energy feedback.The stressed deceleration of rotor simultaneously, this is braking.Electrical regenerative braking is electrical motor to be transformed into electrical generator use, and the kinetic energy of vehicle is transformed into electric energy.The electric energy that conversion obtains can store or see through electrical network and see off, and regenerative cycle uses.This brake mode has reached the purpose that reclaims braking energy, has realized the social theory of energy-conserving and environment-protective, has been used on all kinds of electric trains.
Yet this brake mode exists the low deficiency of conversion efficiency, and general regenerative brake only can use about 30 percent kinetic energy regeneration, and remaining kinetic energy still becomes heat; Technology content requires high; Need to build bulky closed-center system; And this brake mode can only be confined to power-actuated vehicle.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, provide a kind of simple in structure, with low cost, flexible operation reliable, the storage of the train braking energy of efficient energy-saving and the method and the device thereof that utilize.
Technical scheme of the present invention provides a kind of train braking energy storage and the method for utilizing, the operation that comprises the steps:
1, during locomotive operation, two high speed spur wheels and two one-level deceleration spur wheels are together meshing respectively; Described two high speed spur wheels are fixed on the locomotive axle, two one-level deceleration spur wheels and two secondary high speed spur wheels are separately fixed on the one-level deboost axle, the one-level deboost axle is fixed on the vehicle body, and two secondary high speed spur wheels and two slip spur wheels are in released state respectively; Described two slip spur wheels are separately fixed on two slide shafts; Two slide shafts are symmetrically fixed on the both sides of vehicle body, with the slide shaft supporting seat they are connected by linear bearing in the centre of two slide shafts, fix a slip finishing bevel gear cuter and a slip spur wheel on each slide shaft respectively;
2, during locomotive brake, stir spanner and drive slide shaft and endwisely slip, drawing under the tooth effect slip spur wheel and the engagement of secondary high speed spur wheel, realization double reduction; Slip finishing bevel gear cuter and fixed cone gear mesh are realized three grades of decelerations; Described fixed cone gear and coaxial being fixed on the rack-and-gear axle of spur wheel, rack-and-gear axle and vehicle body are fixed;
3, spur wheel and the tooth bar that is fixed on the rack-and-gear axle is meshing, and fixed cone gear driven tooth bar moves to the compression direction of spring, and the spring after the compression realizes that energy stores;
When 4, locomotive starts, stir spanner to original position, the drive slide shaft endwisely slips, compressed spring discharges elastic potential energy, promote the tooth bar counter motion, the spur wheel counter-rotating that rack drives is engaged with, the slip awl tooth on the fixed cone gear driven slide shaft and the rotation of slip spur wheel, be passed to locomotive axle, locomotive obtains initial start kinetic energy.
Realize above-mentioned train braking energy storage and a kind of device that utilizes method, comprise first order deceleration system, second stage deceleration system, third stage deceleration system and energy storage system;
The structure of described first order deceleration system is: two high speed spur wheels are fixed on the locomotive axle, and two one-level deceleration spur wheels are fixed on the one-level deboost axle, and the one-level deboost axle is fixed on the vehicle body;
The structure of described second stage deceleration system is: two slide shafts are symmetrically fixed on the both sides of vehicle body, with the slide shaft supporting seat they are connected by linear bearing in the centre of two slide shafts; Secondary high speed spur wheel is fixed on the one-level deboost axle; Fixedly slip finishing bevel gear cuter, slip spur wheel respectively on the slide shaft, spanner control slide shaft is realized axial translation;
The structure of described third stage deceleration system is: the slip finishing bevel gear cuter is fixed on the slide shaft, and fixed cone gear, spur wheel are fixed on the rack-and-gear axle; Rack-and-gear axle and vehicle body are fixed, and the awl tine angle sum of slip finishing bevel gear cuter and fixed cone gear is 90 degree;
The structure of described energy storage system is: be fixed in spur wheel and tooth bar engagement on the rack-and-gear axle, an end of tooth bar is fixed on the spring stop, and spring stop and spring are fixed.
The present invention adopts the energy-conservation brake system of spring, the characteristic of utilizing spring can stored energy and in certain holding capacity scope, can finely release energy, reasonable combination by spring and mechanical mechanism, make train have following function: 1, in the normal driving process of train, brake equipment can not influence the normal operation of train.2, when train braking, under the situation that does not influence train normal brake application effect, by gear system the braking energy of train is changed into the elastic potential energy of spring, realize the storage of braking energy.3, when train stops, by the gear self-locking device, guarantee that the elastic potential energy of spring can not discharge when train stops.4, when train restarts, the zero energy when the recycling gear system changes into launch train with the elastic potential energy of spring, thus the train braking energy is reclaimed and in time utilize, realize the energy-conservation braking of train.Train braking device provided by the invention can realize reducing the energy consumption of train braking in through the main cycle of braking heap of times and starting at train.
Compared with prior art, beneficial effect of the present invention is:
1, the advantages of simple of physical construction design is ingenious, reduces manufacturing cost.This brake system cardinal principle is a cover physical construction, and this structure design is simple, reliable, reduces production difficulty and cost, is conducive to the practicability of this novel energy-conserving brake system.
2, can be complementary mutually with existing train system and merge, under the situation that guarantees the train normal brake application, can store recycling to the braking energy of train, realize the purpose of energy-conserving and environment-protective.
3, by a series of gear transmission and spring structure, the train braking energy is changed into the elastic potential energy of spring, the elastic potential energy of train braking energy and spring all belongs to mechanical energy, belongs to the conversion between the energy of the same race, the conversion efficiency height.
Description of drawings
Fig. 1 be the embodiment of the invention provide a kind of for the train braking energy storage structural representation with the energy-conservation brake equipment that utilizes;
Wherein: 1, vehicle body; 2, trailing wheel; 3, back wheeling support; 4, rear axle; 5, spring stop; 6, spring; 7, shift fork bearing; 8, spanner; 9, declutch shift shaft; 10, shift fork; 11, slide shaft spring; 12, front-wheel; 13, front axle; 14, deep groove ball bearing; 15, preceding shaft stool; 16, high speed spur wheel; 17, one-level deboost axle; 18, deep groove ball bearing; 19, linear bearing; 20, one-level deceleration spur wheel; 21, deboost axle bearing; 22, secondary high speed spur wheel; 23, slide shaft supporting seat; 24, slip finishing bevel gear cuter; 25, slip spur wheel; 26, slide shaft bearing; 27, linear bearing; 28, fixed cone gear; 29, anchor shaft bearing; 30, deep groove ball bearing; 31, tooth bar bearing; 32, deep groove ball bearing; 33, tooth bar; 34, spur wheel; 35, deep groove ball bearing; 36, rack-and-gear axle; 37 slide shafts.
The specific embodiment
Technical solution of the present invention is further elaborated below in conjunction with drawings and Examples.
Embodiment 1
Referring to accompanying drawing 1, it is the structural representation of a kind of train braking device of providing of present embodiment; This brake equipment is fixed on the bottom of vehicle body 1, between preceding wheel system and the back wheel system; Preceding wheel system is made of front-wheel 12, front axle 13, deep groove ball bearing 14 and preceding shaft stool 15, and back wheel system is made of trailing wheel 2, back wheeling support 3, rear axle 4 and deep groove ball bearing 32.
First order deceleration system comprises two front axles 13, one-level deboost axle 17, and two high speed spur wheels 16 and two one-level deceleration spur wheels 20; One-level deboost axle 17 is fixing with vehicle body 1 by deep groove ball bearing 18 and deboost axle bearing 21, and two high speed spur wheels 16 are fixed on the front axle, and two one-level deceleration spur wheels 20 are fixed on the one-level deboost axle 17.Train is in operational process, and two high speed spur wheels are together meshing with two one-level deceleration spur wheels, with the motion of locomotive or stop to be in rotation or quiescence always.In order to realize slowing down to greatest extent, its ratio of number of teeth approaches maximum reduction ratio (present embodiment is 1:3) as far as possible, thereby realizes first order deceleration.When locomotive normally travels, have only this grade train of reduction gears to rotate, the rotating speed of its low speed turbine stage gear is lower, and this moment, brake system can not start.According to actual needs, the progression of reducing gear can be increased to tens to twenties grades, makes the deceleration ratio of number of teeth reach tens to one situation, the high-speed cruising of true train is converted into the low cruise of final stage gear.
Second stage deceleration system comprises that two other spur wheel 22, two covers that are fixed on the one-level deboost axle 17 are separately fixed at two slip finishing bevel gear cuter 24, slip spur wheels 25 on the slide shaft 37; Its structure is: two slide shafts 37 are fixed with vehicle body by slide shaft bearing 26, linear bearing 27 respectively, and the middle linear bearing 19 that passes through is connected with slide shaft supporting seat 23; Secondary high speed spur wheel 22 is with 20 rotations of one-level deceleration spur wheel, two covers fixedly have the slide shaft of slip finishing bevel gear cuter 24, slip spur wheel 25 to realize axial left and right sides translation by spanner 8, declutch shift shaft 9, shift fork 10, shift fork bearing 7, slide shaft spring 11, and this two covers slide shaft system is symmetrical distribution.Under the situation of the normal operation of locomotive, two secondary high speed spur wheels 22 and two slip spur wheels 25 are in released state, and this moment, energy-conservation brake system can not start.When locomotive needs energy storage in brake process, stir the shift fork 9 that is connected with slide shaft 37, slide shaft 37 is endwisely slipped, drive axle simultaneously and go up spur wheel 25 and 24 slips of slip finishing bevel gear cuter, drawing under the tooth effect spur wheel 25 on the axle and 22 engagements (ratio of number of teeth is 1:1.33 in the present embodiment) of secondary high speed spur wheel.Thereby realize slowing down for the second time.
Third stage deceleration system comprises that the slip finishing bevel gear cuter 24 that is fixed on the slide shaft 37 and the awl tine angle sum of 28, two finishing bevel gear cuters of fixed cone gear are 90 °, can realize that 90 ° turn to.Fixed cone gear 28, spur wheel 34 and rack-and-gear axle 36 are fixed with vehicle body 1 by anchor shaft bearing 29, deep groove ball bearing 30, deep groove ball bearing 35 again.Under the situation of the normal operation of locomotive, slip finishing bevel gear cuter 24 and fixed cone gear 28 are in released state, and this moment, energy-conservation brake system can not start.When locomotive needs energy storage in brake process, stir the shift fork 9 that is connected with slide shaft, the slide shaft 37 of mechanism is slided, when slip spur wheel 25 and secondary high speed spur wheel 22 mesh, slip finishing bevel gear cuter 24 and fixed cone gear 28 are realized meshing (ratio of number of teeth of present embodiment is 1:2), thereby realize slowing down for the third time.
In the device of present embodiment, with fixed cone gear 28 is coaxial another spur wheel 34 arranged fixedly, spur wheel 34 meshes together with tooth bar 33, tooth bar 33 is fixing with vehicle body 1 by tooth bar bearing 31, can make power on the axletree and energy all by gear transmission to tooth bar, realize the transformation of gear rotation trend tooth bar translation simultaneously.The other end that the straight-line motion of tooth bar promotes to be attached thereto is again being fixed spring 6 compressions on the spring stop 5, realizes the storage of energy.
When static from decelerating to, thermal energy storage process finishes, in order to realize self-locking, only need stir the shift fork that is connected with the exoergic slide shaft, slide shaft 37 slides in the mechanism, and with slip finishing bevel gear cuter fixing on the slide shaft 37 24 and 28 engagements of fixed cone gear, this moment, two groups of finishing bevel gear cuters meshed simultaneously, reach the self-locking effect, spring is in compressive state all the time.Meanwhile, on the slide shaft cylindrical wheel also draw under the tooth effect with the engagement of secondary high speed spur wheel group on.
When locomotive starts, only need to dial back the shift fork that is connected with slide shaft 37 in the mechanism, owing to be with slide shaft spring 11 on the axle, can get back to initial position by impeller-hub, make slide shaft slide back to virgin state, self-locking is opened like this, the spring of compression discharges elastic potential energy, promotes tooth bar 33 counter motions, and tooth bar then drives spur wheel 34 counter-rotatings that are engaged with, slip finishing bevel gear cuter 24 and the cylinder tooth spiral on the slide shaft that 28 of coaxial fixed cone gears drive on the exoergic slide shaft change, drive secondary gear group and one-level gear cluster again, finally drive locomotive axle and rotate, energy discharges, locomotive starts, thereby obtains initial kinetic energy.
The present invention is slowed down by the tertiary gear transmission earlier, again through the rack-and-gear transmission, gear is rotated the translation of changing into tooth bar, being connected by tooth bar and spring at last, realize compressed energy-storage and the elongation exoergic of spring, when being provided, a kind of braking utilizes the spring compression energy of attracting deposit, the energy-conservation brake equipment of recycling spring elongation outputting power during walking.
The pure mechanical mechanism of brake application provided by the invention, by gear transmission, spring compression, the purpose that reaches mechanism's stored energy and release energy realizes the braking of mechanism and starts effect.Wherein energy storage, exergonic process are at first slowed down by the tertiary gear transmission, and then by the rack-and-gear transmission, gear are rotated the translation of changing into tooth bar, by being connected of tooth bar and spring, realize compressed energy-storage and the elongation exoergic of spring at last.Motion process is divided into four steps:
The first step: normally travel
Train of the present invention is in normal driving process, and two high speed spur wheels are together meshing all the time with two one-level deceleration spur wheels, with the motion of locomotive or stop to be in rotation or quiescence always.In order to realize slowing down to greatest extent, its ratio of number of teeth approaches maximum reduction ratio (as 1:3) as far as possible, thereby realizes first order deceleration.At this moment, (progression of reducing gear can be increased to tens to twenties grades to have only the rotation of first order level train of reduction gears, make the deceleration ratio of number of teeth reach tens to one situation, come the high-speed cruising of true train is converted into the low cruise of final stage gear), the rotating speed of its low speed turbine stage gear is lower, and two spur wheels and two slip spur wheels all are in released state, and this moment, energy-conservation brake system can not start.
Second step: energy storage
When locomotive needs energy storage in brake process, stirring the right shift fork makes mechanism's right-hand part slide shaft slide, driving last two gears of axle (cylindrical wheel and finishing bevel gear cuter) simultaneously slides, drawing under the tooth effect spur wheel on the axle and low speed turbine stage spur wheel engagement (ratio of number of teeth is 1:1.33).Thereby realize slowing down for the second time.In spur wheel and the engagement of low speed turbine stage spur wheel, two finishing bevel gear cuters are realized meshing (ratio of number of teeth is 1:2).Thereby realize slowing down for the third time.
In this device, with the fixed cone gear is coaxial another spur wheel arranged fixedly, spur wheel meshes together with tooth bar again, so just make power on the device axletree and energy all by gear transmission to tooth bar, realize the transformation of gear rotation trend tooth bar translation simultaneously.The spring that the straight-line motion of tooth bar promotes to be attached thereto again compresses, and realizes the storage of energy.
The 3rd step: self-locking
When the present invention is static from decelerating to, thermal energy storage process finishes, in order to realize self-locking, only need stir left half of shift fork and make the slide shaft of mechanism left side slide (mechanism on both sides is symmetrical), make slip finishing bevel gear cuter and fixed cone gear on the slide shaft mesh, this moment, two groups of finishing bevel gear cuters meshed simultaneously, reached the self-locking effect, and spring is in compressive state all the time.Meanwhile, on the axle cylindrical wheel also draw under the tooth effect with the engagement of double-reduction gear group on.
The 4th step: exoergic
When locomotive need start, only need to dial back the right half of shift fork of mechanism, slide shaft is slid back to (be with spring on the axle, can impeller-hub get back to initial position) virgin state, self-locking is opened like this, originally the spring of compression discharges elastic potential energy, promote tooth bar 33 counter motions, tooth bar then drives spur wheel 34 counter-rotatings that are engaged with, and the slip awl tooth on 28 left half of slide shafts of drive of coaxial bevel gear wheel and the cylinder tooth spiral on the slide shaft change, and drive secondary gear group and one-level gear cluster again, the final locomotive axle that drives rotates, energy discharges, and locomotive starts, thereby obtains initial kinetic energy.
Claims (2)
1. a train braking energy is stored and the method for utilizing, and it is characterized in that comprising the steps:
(1) during locomotive operation, two high speed spur wheels and two one-level deceleration spur wheels are together meshing respectively; Described two high speed spur wheels are fixed on the locomotive axle, two one-level deceleration spur wheels and two secondary high speed spur wheels are separately fixed on the one-level deboost axle, the one-level deboost axle is fixed on the vehicle body, and two secondary high speed spur wheels and two slip spur wheels are in released state respectively; Described two slip spur wheels are separately fixed on two slide shafts; Two slide shafts are symmetrically fixed on the both sides of vehicle body, with the slide shaft supporting seat they are connected by linear bearing in the centre of two slide shafts, fix a slip finishing bevel gear cuter and a slip spur wheel on each slide shaft respectively;
(2) during locomotive brake, stir spanner and drive slide shaft and endwisely slip, drawing under the tooth effect slip spur wheel and the engagement of secondary high speed spur wheel, realization double reduction; Slip finishing bevel gear cuter and fixed cone gear mesh are realized three grades of decelerations; Described fixed cone gear and coaxial being fixed on the rack-and-gear axle of spur wheel, rack-and-gear axle and vehicle body are fixed;
(3) spur wheel and the tooth bar that is fixed on the rack-and-gear axle is meshing, and fixed cone gear driven tooth bar moves to the compression direction of spring, and the spring after the compression realizes that energy stores;
When (4) locomotive starts, stir spanner to original position, the drive slide shaft endwisely slips, compressed spring discharges elastic potential energy, promote the tooth bar counter motion, the spur wheel counter-rotating that rack drives is engaged with, the slip awl tooth on the fixed cone gear driven slide shaft and the rotation of slip spur wheel, be passed to locomotive axle, locomotive obtains initial start kinetic energy.
2. realize train braking energy storage as claimed in claim 1 and the device that utilizes method for one kind, it is characterized in that: comprise first order deceleration system, second stage deceleration system, third stage deceleration system and energy storage system;
The structure of described first order deceleration system is: two high speed spur wheels are fixed on the locomotive axle, and two one-level deceleration spur wheels are fixed on the one-level deboost axle, and the one-level deboost axle is fixed on the vehicle body;
The structure of described second stage deceleration system is: two slide shafts are symmetrically fixed on the both sides of vehicle body, with the slide shaft supporting seat they are connected by linear bearing in the centre of two slide shafts; Secondary high speed spur wheel is fixed on the one-level deboost axle; Fixedly slip finishing bevel gear cuter, slip spur wheel respectively on the slide shaft, spanner control slide shaft is realized axial translation;
The structure of described third stage deceleration system is: the slip finishing bevel gear cuter is fixed on the slide shaft, and fixed cone gear, spur wheel are fixed on the rack-and-gear axle; Rack-and-gear axle and vehicle body are fixed, and the awl tine angle sum of slip finishing bevel gear cuter and fixed cone gear is 90 degree;
The structure of described energy storage system is: be fixed in spur wheel and tooth bar engagement on the rack-and-gear axle, an end of tooth bar is fixed on the spring stop, and spring stop and spring are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310133576.0A CN103192846B (en) | 2013-04-17 | 2013-04-17 | A kind of method of train braking stored energy and utilization and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310133576.0A CN103192846B (en) | 2013-04-17 | 2013-04-17 | A kind of method of train braking stored energy and utilization and device thereof |
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| Publication Number | Publication Date |
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| CN103192846A true CN103192846A (en) | 2013-07-10 |
| CN103192846B CN103192846B (en) | 2015-10-28 |
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| CN201310133576.0A Expired - Fee Related CN103192846B (en) | 2013-04-17 | 2013-04-17 | A kind of method of train braking stored energy and utilization and device thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743465A (en) * | 2015-03-27 | 2015-07-01 | 河南机电高等专科学校 | Crane braking energy storage mechanism |
| CN106698271A (en) * | 2017-02-22 | 2017-05-24 | 安徽合力股份有限公司 | Standing driving type forklift braking system |
| CN112849170A (en) * | 2021-02-19 | 2021-05-28 | 安徽万航轨道交通装备有限公司 | Oil-electricity hybrid driving device for locomotive |
| CN113700801A (en) * | 2021-09-22 | 2021-11-26 | 郭宁波 | Self-locking speed reducer |
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| WO2003083277A2 (en) * | 2002-04-02 | 2003-10-09 | Barbe, Ignacio, Martin | Energy storage/booster device |
| CN1634625A (en) * | 2004-12-08 | 2005-07-06 | 于洪晶 | Sliding booster |
| JP2008223747A (en) * | 2007-03-08 | 2008-09-25 | Itbox Co Ltd | Energy conservation device |
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| DE2143753A1 (en) * | 1971-09-01 | 1972-11-16 | Preh Elektrofeinmechanische Werke Jakob Preh Nachf., 8740 Bad Neustadt | Changeable resistance |
| CN87102501A (en) * | 1987-03-31 | 1987-11-04 | 李德华 | Spring store energy motor and spring energy-storage bicycle |
| CN1157231A (en) * | 1996-02-13 | 1997-08-20 | 江深 | Automatic wheel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743465A (en) * | 2015-03-27 | 2015-07-01 | 河南机电高等专科学校 | Crane braking energy storage mechanism |
| CN106698271A (en) * | 2017-02-22 | 2017-05-24 | 安徽合力股份有限公司 | Standing driving type forklift braking system |
| CN112849170A (en) * | 2021-02-19 | 2021-05-28 | 安徽万航轨道交通装备有限公司 | Oil-electricity hybrid driving device for locomotive |
| CN112849170B (en) * | 2021-02-19 | 2024-01-05 | 安徽万航轨道交通装备有限公司 | Oil-electricity hybrid driving device for locomotive head of railway locomotive |
| CN113700801A (en) * | 2021-09-22 | 2021-11-26 | 郭宁波 | Self-locking speed reducer |
| CN113700801B (en) * | 2021-09-22 | 2024-01-26 | 郭宁波 | Self-locking speed reducer |
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| CN103192846B (en) | 2015-10-28 |
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