CN106998115A - Electro-hydraulic driving friction load damping unit and its brake control method - Google Patents
Electro-hydraulic driving friction load damping unit and its brake control method Download PDFInfo
- Publication number
- CN106998115A CN106998115A CN201710261351.1A CN201710261351A CN106998115A CN 106998115 A CN106998115 A CN 106998115A CN 201710261351 A CN201710261351 A CN 201710261351A CN 106998115 A CN106998115 A CN 106998115A
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- connecting rod
- brake
- electro
- damping unit
- driving friction
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
- H02K7/1021—Magnetically influenced friction brakes
- H02K7/1023—Magnetically influenced friction brakes using electromagnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
- H02P3/22—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by short-circuit or resistive braking
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides the electro-hydraulic driving friction load damping unit of one kind and its brake control method.The electro-hydraulic driving friction load damping unit of the present invention includes：Base, first connecting rod, brake shoe, brake wheel, axle, second connecting rod, hydraulic cylinder, guiding valve and hydraulic pump；Wherein, first connecting rod is installed on base, and first connecting rod is connected with brake shoe, and brake wheel is arranged between brake shoe；There is axle, the other end of first connecting rod connects second connecting rod using the mode being hinged, and second connecting rod is connected with hydraulic cylinder, and hydraulic cylinder is connected with guiding valve, and guiding valve is connected with hydraulic pump on brake wheel.The electro-hydraulic driving friction load damping unit of the present invention and its brake control method, quick rotation stop and generation frictional damping load available for rotation class axle class mechanical rotation movement.
Description
Technical field
The present invention relates to motor braking technology, more particularly to a kind of electro-hydraulic driving friction load damping unit and its braking control
Method processed.
Background technology
The rotor of class axle class mechanical rotation movement and the reason of associated load inertia are rotated due to motor etc., it is different
The rotor of step motor is from excision power supply to the longer process that stops operating, it is necessary to which one section is compared for a long time.In reality
In production process, the time stopped operating to shorten rotor even only stops, improves production efficiency, many rotation class works immediately
Make mechanical device (such as universal milling machine, horizontal boring machine, building-block machine) require motor rotor can stop operating rapidly and
Reliably rotor is maintained to stop the rotation.This requires that applying frictional damping to the armature spindle of motor loads, and forces it to stop immediately
Spin-ended turn and reliably maintain rotor and stop the rotation.
At present, such mode for making axle stall (braking) applied on lathe has two major classes：Mechanical braking and electric braking.
Mechanical braking is braked using mechanically or hydraulically brake apparatus, and electric braking is to produce one and original direction of rotation by motor
Opposite torque realizes braking.Electrical braking modes mainly have dynamic braking and reversing braking in lathe.
The brake force smaller (especially prominent during low speed) of dynamic braking is, it is necessary to dc source.Dynamic braking is applied to require
Accurate, the stable occasion of braking, such as main shaft orientation of grinding machine, metal-planing machine and building-block machine.
Reversing braking is, using the phase sequence for changing three phase mains on asynchronous motor stator winding, stator is produced rotor
Backward-rotating field and produce heavy braking torque.During reversing braking, rotating excitation field relative velocity is very big, and stator current is also very
Greatly, therefore braking is rapid.But impact larger in braking procedure, there is damage to transmission mechanism, consume larger energy, and
When speed relay action is unreliable, reversing braking, which can also cause, reversely restarts.Therefore reversing braking mode is usually used in not frequently
When numerous starting, braking to parking spot without exact requirements transmission mechanism can bear in the equipment of greater impact as milling machine, boring machine,
The braking of medium heavy lathe main shaft.For starting braking frequently asynchronous machine, if substantial amounts of using that can be produced during reversing braking
Heat, or even motor can be burnt.The high place of comparison is being required typically using electromagnetism armful valve braking, but system bulk is big at present,
Certain space is taken, cost is higher and control circuit is complicated, and locking dynamics is small.
The content of the invention
The brief overview on the present invention is given below, to provide on the basic of certain aspects of the invention
Understand.It should be appreciated that this general introduction is not the exhaustive general introduction on the present invention.It is not intended to determine the pass of the present invention
Key or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides some concepts in simplified form,
In this, as the preamble in greater detail discussed later.
In consideration of it, the invention provides the electro-hydraulic driving friction load damping unit of one kind and its brake control method, so that
Prior art is solved less there is the problem of system bulk is big, cost is high and control circuit is complicated, locking dynamics is small.
According to an aspect of the invention, there is provided a kind of electro-hydraulic driving friction load damping unit, electro-hydraulic driving friction
Loading damping unit includes base, first connecting rod, brake shoe, brake wheel, axle, second connecting rod, hydraulic cylinder, guiding valve and hydraulic pump；Wherein,
First connecting rod is installed on base, and first connecting rod is connected with brake shoe, and brake wheel is arranged between brake shoe；There is axle, first on brake wheel
The other end of connecting rod connects second connecting rod using the mode being hinged, and second connecting rod is connected with hydraulic cylinder, and hydraulic cylinder connects with guiding valve
Connect, guiding valve is connected with hydraulic pump.
Further, first connecting rod and second connecting rod are V-type bar；One end connect base of the drift angle side of first connecting rod；
One end connection liquid cylinder pressure of the drift angle side of second connecting rod；The two ends of the open side of first connecting rod are respectively adopted the mode being hinged and connected
Connect the two ends of the open side of second connecting rod.
Further, brake shoe is arranged in the V-type space of first connecting rod；Brake shoe includes the first brake block and the second braking
Block；First brake block connects the upper arm of first connecting rod, and the second brake block connects the underarm of first connecting rod；Brake wheel is installed on first
Between brake block and the second brake block.
Further, the connected mode of first connecting rod and brake shoe is drilled with screw thread eye, used using being hinged on first connecting rod
Clamping screw and spring fix brake shoe, and clamping screw uses guide spiro rod of the pitch in the range of 0.35-0.5mm, and spring is another
End is hung on brake shoe boss.
Further, for fixing the spring rate of brake shoe in the range of 600N/mm-1000N/mm.
Further, the upper arm and underarm of first connecting rod are each drilled with screw thread eye；First brake block using be hinged mode,
The non-end of first connecting rod upper arm is fixedly connected on by clamping screw and spring；Second brake block uses the mode that is hinged, led to
Cross clamping screw and spring is fixedly connected on the non-end of first connecting rod underarm.
Further, electro-hydraulic driving friction load damping unit also includes motor, electrothermal relay, first contactor, the
Two contactors, the 3rd contactor, first fuse, second fuse, power switch, the first stop button and second stop pressing
Button；Wherein, the driving access power line of motor is connected with the input power cord of AC-DC transformer, the electromagnet of guiding valve
Winding wiring is connected with the outlet terminal of AC-DC transformer, input power cord and the heat of AC-DC transformer
Relay is connected, and electrothermal relay is connected with first contactor, and first contactor is connected with first fuse, first fuse and electricity
Source switch is connected, and power switch is connected with second fuse, and second fuse is connected with the first stop button, the first stop button
It is connected with the second stop button, the second stop button is in parallel with second contactor, second contactor is connected with the 3rd contactor.
The brake control method of electro-hydraulic driving friction load damping unit as described above, the brake control method includes：
Power turn-on is switched, and is pressed after the second stop button, first contactor coil is obtained electricity on electric self-locking, main contacts closure, guiding valve
Magnet coil is powered, the movement of guiding valve main valve plug so that its left side function position is connected, and pressure oil enters hydraulic cylinder left chamber, piston rod
Move right, separate brake shoe and the brake wheel of electro-hydraulic driving friction load damping unit, motor operation；During parking, is pressed
After one stop button, make second contactor coil blackout, self-holding contact and main contacts segmentation, make the electromagnet of motor and guiding valve
Coil is powered off simultaneously, and guiding valve main valve plug resets so that its right side function position is connected, and pressure oil enters hydraulic cylinder right chamber, piston rod
It is moved to the left, causes brake shoe 3 tightly to embrace brake wheel under the pulling force effect of first connecting rod and second connecting rod, to realize band-type brake system
It is dynamic.
The electro-hydraulic driving friction load damping unit and its brake control method of the present invention, can make rotation class axle class machinery
Rotary motion moment rotation stop is zero to rotating speed, and control method is more reliable, has the advantages that：
The electro-hydraulic driving friction load damping unit of the present invention is when being powered, and the left position of guiding valve is connected, and piston rod is moved to right, and makes system
The brake shoe and brake wheel of dynamic device are separated, and motor M is rotated；After SB1 resets, contactor KM2 dead electricity release, its normally opened contact is beaten
Open, the electromagnet coil dead electricity release of guiding valve, the right position of guiding valve is connected in the presence of spring force, and rapid braking ratchet wheel makes electricity
Motivation is stalled rapidly；The electro-hydraulic driving friction load damping unit of the present invention has that power to volume ratio is big, rapidity is good, precision
High, anti-loading rigidity is big, locking great efforts the advantages of, the motor reel rotated at a high speed is quickly stopped operating, and remains stationary,
Play safety effect；Play a part of damping when can also stopped operating by the way of connecting rod transmission pulling force, reduce due to
Vibrate the damage brought to power set or workpiece；Brake shoe is with connecting rod using the connection side being hinged with clamping screw reinforcing
Formula, can adapt to a variety of different equipment by debugging, the brake shoe of different model can be changed when necessary, meeting equipment makes
With demand, and using semicircle brake shoe, the lifting surface area of increase brake shoe and brake wheel, increasing friction force is more beneficial for rapid stopping
Rotate.
By the detailed description below in conjunction with accompanying drawing to highly preferred embodiment of the present invention, these and other of the invention is excellent
Point will be apparent from.
Brief description of the drawings
The present invention can be by reference to being better understood, wherein in institute below in association with the description given by accompanying drawing
Have and used same or analogous reference in accompanying drawing to represent same or similar part.The accompanying drawing is together with following
Describe the part for including in this manual and being formed this specification together in detail, and for this is further illustrated
The preferred embodiment of invention and the principle and advantage for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the electro-hydraulic driving friction load damping unit of the present invention；
Fig. 2 is the structural representation of connecting rod and brake shoe in electro-hydraulic driving friction load damping unit of the invention.
It will be appreciated by those skilled in the art that element in accompanying drawing is just for the sake of showing for the sake of simple and clear,
And be not necessarily drawn to scale.For example, the size of some elements may be exaggerated relative to other elements in accompanying drawing, with
Just it is favorably improved the understanding to the embodiment of the present invention.
Embodiment
The one exemplary embodiment of the present invention is described hereinafter in connection with accompanying drawing.For clarity and conciseness,
All features of actual embodiment are not described in the description.It should be understood, however, that developing any this actual implementation
Many decisions specific to embodiment must be made during example, to realize the objectives of developer, for example, symbol
Those restrictive conditions related to system and business are closed, and these restrictive conditions may have with the difference of embodiment
Changed.In addition, it also should be appreciated that, although development is likely to be extremely complex and time-consuming, but to having benefited from the disclosure
For those skilled in the art of content, this development is only routine task.
Herein, in addition it is also necessary to which explanation is a bit, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings
It illustrate only and according to the closely related apparatus structure of the solution of the present invention and/or process step, and eliminate and the present invention
The little other details of relation.
The embodiment provides the electro-hydraulic driving friction load damping unit of one kind, electro-hydraulic driving friction load damping
Device includes base, first connecting rod, brake shoe, brake wheel, axle, second connecting rod, hydraulic cylinder, guiding valve and hydraulic pump；Wherein, first connecting rod
It is installed on base, first connecting rod is connected with brake shoe, brake wheel is arranged between brake shoe；On brake wheel have axle, first connecting rod it is another
One end connects second connecting rod using the mode being hinged, and second connecting rod is connected with hydraulic cylinder, and hydraulic cylinder is connected with guiding valve, guiding valve with
Hydraulic pump is connected.
Fig. 1 gives the structure chart of an example of the electro-hydraulic driving friction load damping unit of the present invention.
As shown in figure 1, electro-hydraulic driving friction load damping unit includes base 1, first connecting rod 2, brake shoe 3, brake wheel 4, axle
5th, second connecting rod 6, hydraulic cylinder 7, guiding valve 8 and hydraulic pump 9.
Wherein, first connecting rod 2 is installed on base 1, and first connecting rod 2 is connected with brake shoe 3, and brake wheel 4 is arranged between brake shoe；
There is axle 5, the other end of first connecting rod 2 connects second connecting rod 6, second connecting rod 6 and hydraulic pressure using the mode being hinged on brake wheel 4
Cylinder 7 is connected, and hydraulic cylinder 7 is connected with guiding valve 8, and guiding valve 8 is connected with hydraulic pump 9.
According to an implementation, as shown in figure 1, first connecting rod 2 and second connecting rod 6 are V-type bar；First connecting rod 2
One end connect base 1 of drift angle side；One end connection liquid cylinder pressure 7 of the drift angle side of second connecting rod 6；The open side of first connecting rod 2
Two ends connect the two ends of the open side of second connecting rod 6 respectively.
In addition, according to an implementation, brake shoe 3 is arranged in the V-type space of first connecting rod 2；Brake shoe 3 includes the first system
Motion block 3-1 and the second brake block 3-2；The upper arm of first brake block 3-1 connections first connecting rod 2, and the second brake block 3-2 connections
The underarm of one connecting rod 2；Brake wheel 4 is installed between the first brake block 3-1 and the second brake block 3-2.
According to an implementation, as shown in Fig. 2 the connected mode of first connecting rod 2 and brake shoe 3 is used and is hinged, first
Screw thread eye is drilled with connecting rod 2, brake shoe 3 is fixed using clamping screw 2-1 and spring 2-2.Clamping screw 2-1 is existed using pitch
Guide spiro rod in the range of 0.35mm-0.5mm.Clamping screw 2-1 coordinates in the screw thread eye of first connecting rod 2；Spring 2-2
One end be connected to clamping screw 2-1, the other end is hung on brake shoe (3) boss.
Wherein, for fixing the spring rate of brake shoe 3 for example in the range of 600-1000N/mm.
As depicted in figs. 1 and 2, the upper arm and underarm of first connecting rod 2 are for example each drilled with screw thread eye；First brake block 3-1
The non-end of the upper arm of first connecting rod 2 is fixedly connected on using the mode that is hinged, by clamping screw 2-1 and spring 2-2；Second system
Motion block 3-2 is used and is hinged mode, the non-end of the underarm of first connecting rod 2 is fixedly connected on by clamping screw 2-1 and spring 2-2
Portion.
In addition, according to an implementation, as shown in figure 1, electro-hydraulic driving friction load damping unit also includes motor
M, electrothermal relay FR1, first contactor KM1, second contactor KM2, the 3rd contactor KM3, first fuse FU1, second are melted
Disconnected device FU2, power switch QS, the first stop button SB1 and the second stop button SB2.
Wherein, motor M driving access power line is connected with the input power cord of AC-DC transformer 13, guiding valve
8 electromagnet coil terminals are connected with the outlet terminal of AC-DC transformer 13, AC-DC transformer 13
Input power cord is connected with electrothermal relay FR1, and electrothermal relay FR1 is connected with first contactor KM1, first contactor KM1 and
One fuse FU1 connections, first fuse FU1 is connected with power switch QS, and power switch QS is connected with second fuse FU2,
Second fuse FU2 is connected with the first stop button SB1, and the first stop button SB1 is connected with the second stop button SB2, and second
Stop button SB2 is in parallel with second contactor KM2, and second contactor KM2 is connected with the 3rd contactor KM3.
In addition, embodiments of the invention additionally provide the braking control of electro-hydraulic driving friction load damping unit as described above
Method processed.The brake control method includes：Power turn-on is switched, and is pressed after the second stop button, is obtained first contactor coil
Electromagnet coil power on electric self-locking, main contacts closure, guiding valve, the movement of guiding valve main valve plug so that its left side function position is connected, pressure
Power oil enters hydraulic cylinder left chamber, and piston rod is moved right, and separates brake shoe and the brake wheel of electro-hydraulic driving friction load damping unit,
Motor operation；During parking, press after the first stop button, make second contactor coil blackout, self-holding contact and main contacts point
Section, makes the electromagnet coil of motor and guiding valve power off simultaneously, and guiding valve main valve plug resets so that its right side function position is connected, pressure
Power oil enters hydraulic cylinder right chamber, and piston rod is moved to the left, and causes that brake shoe 3 is tight under the pulling force effect of first connecting rod and second connecting rod
Brake wheel is held, to realize brake sticking brake.
Referring to Fig. 1, power turn-on switch QS, press after the second stop button SB2, first contactor KM1 coils is obtained electric
Electromagnet coil power on self-locking, main contacts closure, guiding valve 8, the movement of the main valve plug of guiding valve 8 so that its left side function position is connected, pressure
Power oil enters the left chamber of hydraulic cylinder 7, and piston rod is moved right, and makes 4 points of the brake shoe 3 and brake wheel of electro-hydraulic driving friction load damping unit
Open, motor M operatings.
In addition, during parking, pressing after the first stop button SB1, make second contactor KM2 coil blackouts, self-holding contact and
Main contacts is segmented, and the electromagnet coil of motor M and guiding valve 8 is powered off simultaneously, and the main valve plug of guiding valve 8 resets so that its right side machine
Energy position is connected, and pressure oil enters the right chamber of hydraulic cylinder 7, and piston rod is moved to the left, and is made in the pulling force of first connecting rod 2 and second connecting rod 6
With lower so that brake shoe 3 tightly embraces brake wheel 4, to realize brake sticking brake.
Although describing the present invention according to the embodiment of limited quantity, above description, the art are benefited from
It is interior it is clear for the skilled person that in the scope of the present invention thus described, it can be envisaged that other embodiments.Additionally, it should be noted that
The language that is used in this specification primarily to readable and teaching purpose and select, rather than in order to explain or limit
Determine subject of the present invention and select.Therefore, in the case of without departing from the scope and spirit of the appended claims, for this
Many modifications and changes will be apparent from for the those of ordinary skill of technical field.For the scope of the present invention, to this
The done disclosure of invention is illustrative and not restrictive, and it is intended that the scope of the present invention be defined by the claims appended hereto.
Claims (8)
1. electro-hydraulic driving friction load damping unit, it is characterised in that the electro-hydraulic driving friction load damping unit includes bottom
Seat (1), first connecting rod (2), brake shoe (3), brake wheel (4), axle (5), second connecting rod (6), hydraulic cylinder (7), guiding valve (8) and hydraulic pump
(9)；
Wherein, the first connecting rod (2) is installed on the base (1), and the first connecting rod (2) is connected with brake shoe (3), described
Brake wheel (4) is arranged between the brake shoe；There is the axle (5), the other end of the first connecting rod (2) on the brake wheel (4)
The second connecting rod (6) is connected using the mode being hinged, the second connecting rod (6) is connected with the hydraulic cylinder (7), the liquid
Cylinder pressure (7) is connected with the guiding valve (8), and the guiding valve (8) is connected with the hydraulic pump (9).
2. electro-hydraulic driving friction load damping unit according to claim 1, it is characterised in that the first connecting rod (2)
It is V-type bar with the second connecting rod (6)；One end of the drift angle side of the first connecting rod (2) connects the base (1)；It is described
One end of the drift angle side of second connecting rod (6) connects the hydraulic cylinder (7)；The two ends difference of the open side of the first connecting rod (2)
The two ends of the open side of the second connecting rod (6) are connected by the way of being hinged.
3. electro-hydraulic driving friction load damping unit according to claim 1 or 2, it is characterised in that brake shoe (3) peace
In the V-type space of the first connecting rod (2)；The brake shoe (3) includes the first brake block (3-1) and the second brake block (3-
2)；First brake block (3-1) connects the upper arm of the first connecting rod (2), and second brake block (3-2) connection is described
The underarm of first connecting rod (2)；The brake wheel (4) be installed on first brake block (3-1) and second brake block (3-2) it
Between.
4. the electro-hydraulic driving friction load damping unit according to any one of claim 1-3, it is characterised in that described
The connected mode of one connecting rod (2) and the brake shoe (3), which is used, to be hinged, and screw thread eye is drilled with the first connecting rod (2), using pressure
Tight screw rod and spring fix the brake shoe (3), and the clamping screw uses guiding spiral shell of the pitch in the range of 0.35mm-0.5mm
Bar, the spring other end is hung on the brake shoe (3) boss.
5. electro-hydraulic driving friction load damping unit according to claim 4, it is characterised in that for fixing the brake shoe
(3) spring rate is in the range of [600-1000N/mm].
6. electro-hydraulic driving friction load damping unit according to claim 3, it is characterised in that the first connecting rod (2)
Upper arm and underarm be each drilled with screw thread eye；First brake block (3-1) uses and is hinged mode, by clamping screw and bullet
Spring is fixedly connected on the non-end of the first connecting rod (2) upper arm；Second brake block (3-2) uses the mode that is hinged, led to
Cross clamping screw and spring is fixedly connected on the non-end of the first connecting rod (2) underarm.
7. the electro-hydraulic driving friction load damping unit according to any one of claim 1-6, it is characterised in that the electricity
Liquid driving friction load damping unit also includes motor (M), electrothermal relay (FR1), first contactor (KM1), the second contact
Device (KM2), the 3rd contactor (KM3), first fuse (FU1), second fuse (FU2), power switch (QS), first stop
Button (SB1) and the second stop button (SB2)；
Wherein, the driving access power line of the motor (M) is connected with the input power cord of AC-DC transformer (13),
The electromagnet coil terminals of guiding valve (8) are connected with the outlet terminal of AC-DC transformer (13), and the exchange is straightened
The input power cord of convertor transformer (13) is connected with the electrothermal relay (FR1), and the electrothermal relay (FR1) connects with described first
Tentaculum (KM1) is connected, and the first contactor (KM1) is connected with first fuse (FU1), the first fuse (FU1) and
Power switch (QS) is connected, and the power switch (QS) is connected with second fuse (FU2), the second fuse (FU2) and
First stop button (SB1) is connected, and first stop button (SB1) is connected with the second stop button (SB2), and described second stops
Only button (SB2) is in parallel with second contactor (KM2), and the second contactor (KM2) is connected with the 3rd contactor (KM3).
8. the brake control method of the electro-hydraulic driving friction load damping unit as described in claim 1-7, it is characterised in that should
Brake control method includes：
Power turn-on switchs (QS), presses after the second stop button (SB2), first contactor (KM1) coil is obtained electric self-locking, main
Electromagnet coil power on the closing of contact, guiding valve (8), the movement of guiding valve (8) main valve plug so that its left side function position is connected, pressure
Oil enters hydraulic cylinder (7) left chamber, and piston rod moves right, make the electro-hydraulic driving friction load damping unit brake shoe (3) and
Brake wheel (4) is separated, motor (M) operating；
During parking, press after the first stop button (SB1), make second contactor (KM2) coil blackout, self-holding contact and main contacts
Segmentation, makes the motor (M) and the electromagnet coil of the guiding valve (8) power off simultaneously, and guiding valve (8) main valve plug resets so that
Its right side function position is connected, and pressure oil enters hydraulic cylinder (7) right chamber, and piston rod is moved to the left, and connects in first connecting rod (2) and second
The brake shoe (3) is caused tightly to embrace brake wheel (4) under the pulling force effect of bar (6), to realize brake sticking brake.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710261351.1A CN106998115A (en) | 2017-04-20 | 2017-04-20 | Electro-hydraulic driving friction load damping unit and its brake control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710261351.1A CN106998115A (en) | 2017-04-20 | 2017-04-20 | Electro-hydraulic driving friction load damping unit and its brake control method |
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| CN201710261351.1A Pending CN106998115A (en) | 2017-04-20 | 2017-04-20 | Electro-hydraulic driving friction load damping unit and its brake control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005971A (en) * | 2017-11-07 | 2018-05-08 | 哈尔滨理工大学 | Double valve-controlled cylinder bringing onto load power control compensation collaborative devices and its control method |
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| CN204512243U (en) * | 2015-02-13 | 2015-07-29 | 杨杰 | Coal master's induced draft fan band-type brake device |
| CN106230324A (en) * | 2016-07-31 | 2016-12-14 | 刘加历 | Direct current energy consumption brake control |
Cited By (1)
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| CN108005971A (en) * | 2017-11-07 | 2018-05-08 | 哈尔滨理工大学 | Double valve-controlled cylinder bringing onto load power control compensation collaborative devices and its control method |
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