CN107741316B - Deep-well lifting system magneto overtravel protection testing stand - Google Patents
Deep-well lifting system magneto overtravel protection testing stand Download PDFInfo
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- CN107741316B CN107741316B CN201710820521.5A CN201710820521A CN107741316B CN 107741316 B CN107741316 B CN 107741316B CN 201710820521 A CN201710820521 A CN 201710820521A CN 107741316 B CN107741316 B CN 107741316B
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- guide rail
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
A kind of deep-well lifting system magneto overtravel protection testing stand, including testing stand bracket, the pneumatic device being sequentially arranged on testing stand bracket, friction pulley accelerator, permanent magnetism retarding device and reverse self-locking brake apparatus；The middle part of testing stand bracket is equipped with guide rail, guide rail is equipped with can be in trolley free to slide, pneumatic device is located at the front end of guide rail, friction pulley accelerator is located at the guide rail two sides on front side of testing stand bracket, the permanent magnetism retarding device is located at the middle part of testing stand bracket, and reverse self-locking brake apparatus is located at the rear side of testing stand bracket.The problems such as testing stand solves the prior art existing operation difficulty is high, danger coefficient is high, experimental cost is high during testing inspection deep-well lifting system magneto overwinding safety gears performance at the scene; its is compact-sized; performance safety, it is easy to operate, it is highly reliable.
Description
Technical field
The present invention relates to a kind of overtravel protection testing stand, especially a kind of deep-well suitable for detecting elevator system safety
Lifting system magneto overtravel protection testing stand.
Background technique
The reliability for improving equipment, it is the following coal industry development side that the overall technology for promoting mine mechanism is horizontal
One of to.And important equipment of the deep-well lifting means as connection underground and ground, Electric Drive characteristic are complicated, motor frequency
Numerous commutation operates and is started often in overload, in the state that braking is constantly converted.Therefore, promotion load is being effectively ensured
In the case where lotus, speed, efficiency and hoisting depth, while the security reliability for improving deep-well lifting system falls object for reducing
Generation, the raising coal industry safety of accident have important practical significance.
In the operational process of lifting system, when hoisting container reaches two extreme positions in working region or more, Ben Yingting
It is only operated without stopping, continuing up or moves downward, into pulleying region, is normally defined and overwind trouble has occurred.When
After there is overwind trouble in lifting system, for the further expansion for avoiding accident, usually in hoisting container working region up and down two
Corresponding safety guard is arranged in a extreme position, and to prevent hoisting container from continuing to move, protection staff safety, reduction is set
Standby loss.Although the development of overtravel protection technology improves overtravel protection security reliability, however in actual use certain
A little equipments still have the phenomenon that target is not achieved, and such as fail the hoisting container braking that will cross volume state in overwind clearance
Stop, pernicious overwind trouble occurs, illustrates the domestic research to overtravel protection technology and protective device still up for making into one
Step research and raising.There are three types of common catching devices domestic at present, and respectively FS type catching device, GS type catching device and BF type are anti-fall
Device.These three catching devices are all that brake shoe or chock is made to be adjacent to check band by machine driving, huge using generating between the two
Frictional force realizes braking effect, belongs to contact braking, there is that abrasion larger, friction element loss is serious, braking distance is longer
The problems such as.
Magneto vortex retarding device is applied more in transportation at present, the basic principle is that reversed using motor
Electricity generating principle, relative motion between magnetic stator and rotor, cutting magnetic induction line generate powerful non-contact brake power.In recent years
Come, the technology be widely used in the transmission system of automobile, with ABS(anti-lock braking system) it is compatible, for improving vehicle
Security performance.Magneto retarding device uses high performance Nd-Fe-B permanent magnet excitation, belongs to contactless braking, no mill
Damage, without additional power supply, permanent magnet itself will not generate heat, and heat fading phenomenon, Yi Shixian lightweight is not present, and excitation is stablized, system
Kinetic moment is stablized.
The region of pulleying up and down in deep-well lifting system installs permanent magnet retarding device additional to carry out the deep-well of overtravel protection
Lifting system magneto overwinding safety gears are a kind of novel overwinding safety gears just proposed in the recent period.Its central principle with it is automobile-used
Permanent-magnet speed buffer is similar, and in theory, principle is feasible, but is a lack of specific experiment and data supporting, is not enough to prove
Its reliability, safety and practicability.
Field test is the effective means of detection deep-well lifting system magneto overwinding safety gears performance, but due to coal
The novelty of high risk and deep-well lifting system magneto overwinding safety gears that industry itself has, in actual operation
With very high operation difficulty, danger coefficient and experimentation cost.For greater safety, conveniently, reliably research deep-well promotes system
The service performance of system magneto overwinding safety gears provides certain experiment basis and data reference for practical research and development, and design is taken
Building deep-well lifting system magneto overtravel protection testing stand is very important.
Summary of the invention
Technical problem: the purpose of the present invention is to solve prior art testing inspection deep-well lifting system permanent magnetism at the scene
The deficiencies of existing operation difficulty is high during formula overwinding safety gears performance, danger coefficient is high, experimental cost is high, provides one kind
Detect deep-well lifting system magneto overwinding safety gears performance it is safer, conveniently, reliable deep-well lifting system magneto
Overtravel protection testing stand.
Technical solution: deep-well lifting system magneto overtravel protection testing stand of the invention, including testing stand bracket, successively
Pneumatic device, friction pulley accelerator, permanent magnetism retarding device and the reverse self-locking brake apparatus being located on testing stand bracket；It is described
The middle part of testing stand bracket is equipped with guide rail, and guide rail is equipped with freely slidable trolley, and the pneumatic device is located at guide rail
Front end, friction pulley accelerator is located at the guide rail two sides on front side of testing stand bracket, and the permanent magnetism retarding device is located at testing stand
The middle part of bracket, reverse self-locking brake apparatus are located at the rear side of testing stand bracket；
The pneumatic device includes that air compressor, check valve, overflow valve, A pressure gauge, cylinder, A 2/2-way are manual
Valve, two four-way hand-operated valves, B pressure gauge, pneumatic cylinder and B 2/2-way hand-operated valve；The outlet of the air compressor and unidirectional
The entrance of valve is connected, and the outlet of check valve is connected with overflow valve, cylinder and the manual valve inlet of B 2/2-way respectively, and cylinder goes out
Mouth is connected with the manual valve inlet of A 2/2-way, and the outlet of A 2/2-way hand-operated valve is connected with the entrance of two four-way hand-operated valves,
Two four-way hand-operated valves are connected with pneumatic cylinder and the direction of motion of control pressure cylinder push rod, when two four-way hand-operated valves are in
When left position, pneumatic cylinder push rod is protruding while pushing trolley with setting speed V1It travels forward；
The trolley includes guide rail slide block, metal plate fixed block, metal plate；Guide rail slide block passes through ball and guide rail
Contact and can free to slide on guide rail and drag minimization, metal plate fixed block, which is connected through a screw thread, is fixed on one with guide rail slide block
It rises, the metal plate fixing two block of material respectively in the groove of metal plate fixed block two sides, all being the same size, and the spiral shell for passing through top
Bolt is compressed；
The friction pulley accelerator includes the friction pulley that guide rail two sides are symmetrically arranged at by grade, and every grade of friction pulley includes rubber
Cushion rubber, motor sleeve, direct current generator；The direct current generator, which is connected through a screw thread, to be fixed on testing stand bracket, direct current generator
Rotor is connected through a screw thread with motor sleeve and is fixed together, and the outer ring of motor sleeve and rubber ring are glued fixation；Give every grade
Two friction pulleys of friction pulley accelerator revolving speed rotation identical with size, contrary, when trolley is with V1Initial velocity
When spending engaging friction wheel accelerator, since there are biggish frictional force, fortune between friction pulley outer rubber circle and guide rail slide block
Dynamic trolley is by reaching speed V when friction pulley acceleration region2；
The permanent magnetism retarding device includes retarder bracket, permanent magnet fixed bracket, permanent magnet adjustment frame, two-way lead screw
Slide unit, permanent magnet fixed block, yoke, permanent magnet, permanent magnet partition；The permanent magnet is evenly distributed to be adsorbed on yoke surface,
Permanent magnet interval is equipped with permanent magnet partition, and the two sides of permanent magnet are clamped by permanent magnet fixed block, and yoke, permanent magnet are fixed
Block, permanent magnet, permanent magnet partition are fastened in the support bracket fastened groove of permanent magnet, and the fixed bracket of permanent magnet is connected through a screw thread
It is fixed together with permanent magnet adjustment frame, permanent magnet adjustment frame is threadedly coupled with two-way screw slide, and two-way screw slide can lead to
It crosses screw thread pair and adjusts the distance between fixed bracket of two permanent magnets of guide rail two sides, two-way screw slide is connected through a screw thread solid
It is scheduled on retarder bracket, retarder bracket, which is connected through a screw thread, to be fixed on testing stand bracket, there is four column on testing stand bracket
Highly different threaded holes is used to adjust the mounting height of retarder bracket, becomes after trolley passes through permanent magnetism retarding device
Speed subtracts V3；
The reverse self-locking brake apparatus include the push rod for being symmetrically arranged at guide rail two sides, pressure spring, fixed block, rubber pad,
Crashworthy plate；Symmetrically arranged push rod is arranged in font, and one end remote from guide rail is fixed on testing stand bracket, and close from guide rail one
End is free end, and push rod can be rotated around fixing end, and pressure spring connection push rod and fixed block, fixed block are fixed on testing stand bracket,
It can be freely rotated, rubber pad is pasted onto anticollision plate surface, and Crashworthy plate is fixed on the end of testing stand bracket, when trolley passes through
After permanent magnetism retarding device, speed is not off, until knocking Crashworthy plate, while being connected push rod and to move under the action of pressure spring
Trolley reverse self-locking brake area can only one-way movement and can not rebound, realize final braking.
Pneumatic cylinder push rod is higher than the height of guide rail in the pneumatic device.
Guide rail slide block selects wear-resistant material in the trolley.
The distance between guide rail two sides friction pulley is less than the width of trolley in the friction pulley accelerator.
Guide rail two sides friction pulley height is less than the height of guide rail slide block in trolley in the friction pulley accelerator.
The distance between permanent magnet of guide rail two sides is greater than the width of trolley in the permanent magnetism retarding device.
Crashworthy plate in the reverse self-locking brake apparatus selects elastic material.
The friction pulley accelerator is three-level friction pulley accelerator.
The A pressure gauge of real-time detection cylinder interior air pressure is housed on the cylinder in the pneumatic device.
Pneumatic cylinder left chamber inlet in the pneumatic device is equipped with the B pressure gauge of real-time detection air pressure.
The utility model has the advantages that as the above scheme is adopted, deep-well lifting system magneto overtravel protection testing stand of the present invention is logical
The operating status for crossing simulation hoisting container, the variation of the speed of service-time is bent when passing through electromagnetic retarding region according to hoisting container
Line obtains the service performance of deep-well lifting system magneto overwinding safety gears.It is protected in view of deep-well lifting system magneto pulleying
Protection unit concept is more novel, not yet practical application and is also capable of providing data supporting without practicable testing stand at present
It proves its reliability, high operation difficulty, danger coefficient and test existing for field test can avoided using the above scheme
It is safer, conveniently, reliably for deep-well lifting system magneto overwinding safety gears provide reliable experiment under the premise of cost
As a result with data supporting, to prove its reliability, safety and practicability.
Detailed description of the invention
Fig. 1 is the general structure schematic diagram of deep-well lifting system magneto overtravel protection testing stand of the present invention；
Fig. 2 is the overall structure top view of deep-well lifting system magneto overtravel protection testing stand of the present invention；
Fig. 3 is that pneumatic circuit is illustrated in the pneumatic device of deep-well lifting system magneto overtravel protection testing stand of the present invention
Figure；
Fig. 4 is the trolley complete section side view of deep-well lifting system magneto overtravel protection testing stand of the present invention；
Fig. 5 is the friction pulley accelerator structural representation of deep-well lifting system magneto overtravel protection testing stand of the present invention
Figure；
Fig. 6 is the permanent magnet fixing rack structure main view of deep-well lifting system magneto overtravel protection testing stand of the present invention
Figure；
Fig. 7 is the permanent magnet fixing rack structure left view of deep-well lifting system magneto overtravel protection testing stand of the present invention
Figure.
In figure: 1, testing stand bracket, 2-1, air pump, 2-2, check valve, 2-3, overflow valve, 2-4, A pressure gauge, 2-5, gas
Cylinder, 2-6, A 2/2-way hand-operated valve, 2-7, two four-way hand-operated valves, 2-8, B pressure gauge, 2-9, pneumatic cylinder, 2-10, B two two
Logical hand-operated valve, 3-1, sliding block, 3-2, metal block bracket, 3-3, metal block, 4, guide rail, 5-1, rubber ring, 5-2, motor sleeve, 6-
1, retarder bracket, the fixed bracket of 6-2, permanent magnet, 6-3, permanent magnet adjustment frame, 6-4, two-way screw slide, 6-5, permanent magnet
Fixed block, 6-6, yoke, 6-7, permanent magnet, 6-8, permanent magnet partition, 7-1, push rod, 7-2, pressure spring, 7-3, fixed block, 7-4, rubber
Rubber mat, 7-5, Crashworthy plate.
Specific embodiment:
One embodiment of the present of invention is further described with reference to the accompanying drawing:
As shown in Figure 1, 2, deep-well lifting system magneto overtravel protection testing stand of the invention, mainly by testing stand bracket
1, pneumatic device, trolley, guide rail 4, friction pulley accelerator, permanent magnetism retarding device, reverse self-locking brake apparatus are constituted.Gas
Dynamic device, guide rail 4, friction pulley accelerator, permanent magnetism retarding device, reverse self-locking brake apparatus are bolted and are fixed on
On testing stand bracket 1.The testing stand bracket 1 is located at the middle part of guide rail 4, and trolley can be free to slide on guide rail 4, described
Pneumatic device is located at the front end of guide rail 4, and friction pulley accelerator is located at 4 two sides of guide rail of 1 front side of testing stand bracket, the permanent magnetism
Retarding device is located at the middle part of testing stand bracket 1, and reverse self-locking brake apparatus is located at the rear side of testing stand bracket 1；
As shown in figure 3, the pneumatic device includes air compressor 2-1, check valve 2-2, overflow valve 2-3, A pressure gauge
2-4, cylinder 2-5, A 2/2-way hand-operated valve 2-6, two four-way hand-operated valve 2-7, B pressure gauge 2-8, pneumatic cylinder 2-9, B two two
Logical hand-operated valve 2-10.Air compressor 2-1 outlet is connected with the entrance of check valve 2-2, check valve 2-2 export respectively with overflow valve
2-3, cylinder 2-5, B 2/2-way hand-operated valve 2-10 entrance are connected, equipped with A pressure gauge 2-4 with real-time detection cylinder on cylinder 2-5
Air pressure inside, the outlet cylinder 2-5 are connected with A 2/2-way hand-operated valve 2-6 entrance, and A 2/2-way hand-operated valve 2-6 is exported and two
Four-way hand-operated valve 2-7 entrance is connected, and two four-way hand-operated valve 2-7 are connected with pneumatic cylinder 2-9 and the fortune of control pressure cylinder 2-9 push rod
B pressure gauge 2-8 is installed with real-time detection pneumatic cylinder 2-9 air pressure in dynamic direction, pneumatic cylinder 2-9 left chamber inlet.When two four-way hands
When dynamic valve 2-7 is in left position, pneumatic cylinder 2-9 push rod is protruding while pushing trolley with setting speed V1It travels forward.
As shown in figure 4, the trolley includes guide rail slide block 3-1, metal plate fixed block 3-2, metal plate 3-3.It leads
Rail sliding block 3-1 is contacted with guide rail 4 by ball and can be free to slide on guide rail 4, and metal plate fixed block 3-2 is connected through a screw thread
It is fixed together with guide rail slide block 3-1, fixes two block of material, size all phases respectively in the groove of the two sides metal plate fixed block 3-2
Same metal plate 3-3, and compressed by the bolt at top.
As shown in Fig. 2,5, the friction pulley accelerator includes three-level friction pulley accelerator, and every grade of friction pulley accelerates
Device includes two friction pulleys, and each friction pulley includes rubber ring 5-1, motor sleeve 5-2, direct current generator 5-3.Direct current generator
5-3, which is connected through a screw thread, to be fixed on testing stand bracket 1, and direct current generator 5-3 rotor and motor sleeve 5-2 are connected through a screw thread admittedly
It is scheduled on together, the outer ring motor sleeve 5-2 and rubber ring 5-1 are glued fixation.Give two frictions of every grade of friction pulley accelerator
Revolving speed rotation identical with size, contrary is taken turns, when trolley is with V1Initial velocity engaging friction wheel accelerator when, by
There are biggish frictional force between friction pulley outer rubber circle 5-1 and guide rail slide block 3-1, trolley adds by friction pulley
It can accelerate by three-level when fast region, reach speed V2。
As shown in Fig. 1,6,7, the permanent magnetism retarding device include retarder bracket 6-1, the fixed bracket 6-2 of permanent magnet,
Permanent magnet adjustment frame 6-3, two-way screw slide 6-4, permanent magnet fixed block 6-5, yoke 6-6, permanent magnet 6-7, permanent magnet partition
6-8.Permanent magnet 6-7 is evenly distributed to be adsorbed on the surface yoke 6-6, and for interval with permanent magnet partition 6-8 filling, two sides pass through permanent magnetism
Body fixed block 6-5 is clamped, and yoke 6-6, permanent magnet fixed block 6-5, permanent magnet 6-7, permanent magnet partition 6-8 are installed in permanent magnet
It is clamped in the groove of fixed bracket 6-2, the fixed bracket 6-2 of permanent magnet is connected through a screw thread to be fixed on permanent magnet adjustment frame 6-3
Together, permanent magnet adjustment frame 6-3 is to be threadedly coupled with two-way screw slide 6-4, and two-way screw slide 6-4 can pass through screw thread pair tune
The distance between fixed bracket 6-2 of the permanent magnet of 4 two sides of guide rail two is saved, two-way screw slide 6-4, which is connected through a screw thread, to be fixed on
On retarder bracket 6-1, retarder bracket 6-1, which is connected through a screw thread, to be fixed on testing stand bracket 1, is had on testing stand bracket 1
The different threaded hole of four column height is used to adjust the mounting height of retarder bracket 6-1, finally makes permanent magnet 6-7 and movement small
Metal plate 3-3 height on vehicle is concordant.
The reverse self-locking brake apparatus includes push rod 7-1, pressure spring 7-2, fixed block 7-3, rubber pad 7-4, Crashworthy plate
7-5.It is fixing end that push rod 7-1 is fixed on testing stand bracket 1 far from one end of guide rail 4, and the other end is free end, push rod 7-1
It can be rotated around fixing end, pressure spring 7-2 connection push rod 7-1 and fixed block 7-3, fixed block 7-3 is fixed on testing stand bracket 1, can
It is freely rotated, rubber pad 7-4 is pasted onto the surface Crashworthy plate 7-5, and Crashworthy plate 7-5 is fixed on 1 end of testing stand bracket.
The course of work:
1, determining needs physical quantity to be simulated: when hoisting container has occurred and that overwind trouble or overwind trouble will occur
When, continue to move forwards with the original speed of service, for such operating status, as long as the initial velocity that we give trolley certain
Degree, so that it may simulate the operating status of hoisting container.
2, install testing stand: according to testing stand bracket 1, pneumatic device, trolley, guide rail 4, friction pulley accelerator,
Permanent magnetism retarding device, reverse self-locking brake apparatus sequence be sequentially completed installation.By adjusting pneumatic device internal pressure size,
The adjustable section trolley movement speed of friction pulley accelerator motor speed, respectively simulation in low speed, full speed, hypervelocity three kinds
The operating status of hoisting container under pulleying mode.
3, data test: starting air compressor makes cylinder pressure value reach preset value；Start motor, rotates friction
Speed reaches preset value；A 2/2-way hand-operated valve 2-6 is opened, gives trolley certain initial velocity V1, make it into friction pulley and add
Fast region simultaneously accelerates to V2, with V2The speed of service enter slow region, when trolley leaves slow region with lower speed
Afterwards, buffer-braking is carried out to it by reverse self-locking brake apparatus.Trolley terminates one-shot acceleration-friction acceleration-electricity
Magnetic is slow-buffer-braking process after, record electromagnetic retarding process, that is, V2-V3The Velocity-time of trolley changes special in the process
Property.
4, interpretation of result: by further dividing the Velocity-time variation characteristic of trolley during electromagnetic retarding
Analysis, to judge the slow characteristic of deep-well lifting system magneto overtravel protection testing stand.
Claims (10)
1. a kind of deep-well lifting system magneto overtravel protection testing stand, it is characterised in that: it include testing stand bracket (1), according to
The secondary pneumatic device being located on testing stand bracket (1), friction pulley accelerator, permanent magnetism retarding device and reverse self-locking braking dress
It sets；The middle part of the testing stand bracket (1) is equipped with guide rail (4), and guide rail (4) is equipped with freely slidable trolley, described
Pneumatic device is located at the front end of guide rail (4), and friction pulley accelerator is located at guide rail (4) two sides on front side of testing stand bracket (1), institute
The middle part that permanent magnetism retarding device is located at testing stand bracket (1) is stated, after reverse self-locking brake apparatus is located at testing stand bracket (1)
Side；
The pneumatic device includes air compressor (2-1), check valve (2-2), overflow valve (2-3), A pressure gauge (2-4), gas
Cylinder (2-5), A 2/2-way hand-operated valve (2-6), two four-way hand-operated valves (2-7), B pressure gauge (2-8), pneumatic cylinder (2-9) and B
2/2-way hand-operated valve (2-10)；The outlet of the air compressor (2-1) is connected with the entrance of check valve (2-2), check valve
The outlet of (2-2) is connected with overflow valve (2-3), cylinder (2-5) and B 2/2-way hand-operated valve (2-10) entrance respectively, cylinder (2-
5) outlet is connected with A 2/2-way hand-operated valve (2-6) entrance, the outlet of A 2/2-way hand-operated valve (2-6) and two four-way hands
The entrance of dynamic valve (2-7) is connected, and two four-way hand-operated valves (2-7) are connected with pneumatic cylinder (2-9) and control pressure cylinder (2-9)
The direction of motion of push rod, when two four-way hand-operated valves (2-7) are in left position, pneumatic cylinder (2-9) push rod is protruding to be pushed away simultaneously
Trolley is moved with setting speed V1It travels forward；
The trolley includes guide rail slide block (3-1), metal plate fixed block (3-2), metal plate (3-3)；Guide rail slide block (3-
1) it contacts and free to slide and drag minimization, metal plate fixed block (3-2) can lead on guide rail (4) with guide rail (4) by ball
It crosses threaded connection to be fixed together with guide rail slide block (3-1), fixes two pieces respectively in the groove of the two sides metal plate fixed block (3-2)
Material, the metal plate all being the same size (3-3), and compressed by the bolt at top；
The friction pulley accelerator includes the friction pulley that guide rail (4) two sides are symmetrically arranged at by grade, and every grade of friction pulley includes rubber
Cushion rubber (5-1), motor sleeve (5-2), direct current generator (5-3)；The direct current generator (5-3), which is connected through a screw thread, is fixed on test
On platform bracket (1), the rotor of direct current generator (5-3) is connected through a screw thread with motor sleeve (5-2) to be fixed together, motor sleeve
The outer ring of (5-2) and rubber ring (5-1), which are glued, to be fixed；Two friction pulleys of every grade of friction pulley accelerator are given with size phase
Same, contrary revolving speed rotation, when trolley is with initial velocity V1When engaging friction wheel accelerator, due on the outside of friction pulley
There are biggish frictional force between rubber ring (5-1) and guide rail slide block (3-1), and trolley is when by friction pulley acceleration region
Reach speed V2；
The permanent magnetism retarding device includes retarder bracket (6-1), permanent magnet fixed bracket (6-2), permanent magnet adjustment frame (6-
3), two-way screw slide (6-4), permanent magnet fixed block (6-5), yoke (6-6), permanent magnet (6-7), permanent magnet partition (6-8)；
The permanent magnet (6-7) is evenly distributed to be adsorbed on the surface yoke (6-6), and permanent magnet (6-7) interval is equipped with permanent magnet partition
(6-8), the two sides of permanent magnet (6-7) are clamped by permanent magnet fixed block (6-5), yoke (6-6), permanent magnet fixed block (6-5),
Permanent magnet (6-7), permanent magnet partition (6-8) are fastened in the groove of permanent magnet fixed bracket (6-2), the fixed bracket of permanent magnet
(6-2) is connected through a screw thread to be fixed together with permanent magnet adjustment frame (6-3), and permanent magnet adjustment frame (6-3) and two-way lead screw are sliding
Platform (6-4) is threadedly coupled, and two-way screw slide (6-4) can be fixed by two permanent magnets that screw thread pair adjusts guide rail (4) two sides
The distance between bracket (6-2), two-way screw slide (6-4), which is connected through a screw thread, to be fixed on retarder bracket (6-1), slowly
Device bracket (6-1), which is connected through a screw thread, to be fixed on testing stand bracket (1), has four column height different on testing stand bracket (1)
Threaded hole is used to adjust the mounting height of retarder bracket (6-1), becomes speed after trolley passes through permanent magnetism retarding device
Subtract V3；
The reverse self-locking brake apparatus includes push rod (7-1), the pressure spring (7-2), fixed block for being symmetrically arranged at guide rail (4) two sides
(7-3), rubber pad (7-4), Crashworthy plate (7-5)；Symmetrically arranged push rod (7-1) arranges in font, one end remote from guide rail (4)
It is fixed on testing stand bracket (1), one end close from guide rail (4) is free end, and push rod (7-1) can be rotated around fixing end, pressure spring
(7-2) connection push rod (7-1) and fixed block (7-3), fixed block (7-3) are fixed on testing stand bracket (1), can be freely rotated,
Rubber pad (7-4) is pasted onto the surface Crashworthy plate (7-5), and Crashworthy plate (7-5) is fixed on the end of testing stand bracket (1), works as movement
After trolley passes through permanent magnetism retarding device, speed is not off, until knocking Crashworthy plate (7-5), while push rod (7-1) is in pressure spring
Make under the action of (7-2) trolley reverse self-locking brake area can only one-way movement and can not rebound, realize final system
It is dynamic.
2. deep-well lifting system magneto overtravel protection testing stand as described in claim 1, it is characterised in that: described is pneumatic
Pneumatic cylinder (2-9) push rod is higher than the height of guide rail (4) in device.
3. deep-well lifting system magneto overtravel protection testing stand as described in claim 1, it is characterised in that: the movement
Guide rail slide block (3-1) selects wear-resistant material in trolley.
4. deep-well lifting system magneto overtravel protection testing stand as described in claim 1, it is characterised in that: the friction
Take turns the width that the distance between guide rail (4) two sides friction pulley in accelerator is less than trolley.
5. deep-well lifting system magneto overtravel protection testing stand as described in claim 1, it is characterised in that: the friction
Take turns the height that guide rail (4) two sides friction pulley height in accelerator is less than guide rail slide block (3-1) in trolley.
6. deep-well lifting system magneto overtravel protection testing stand as described in claim 1, it is characterised in that: the permanent magnetism
The distance between permanent magnet (6-7) of guide rail (4) two sides is greater than the width of trolley in retarding device.
7. deep-well lifting system magneto overtravel protection testing stand as described in claim 1, it is characterised in that: described is reversed
Crashworthy plate in self-locking brake device selects elastic material.
8. deep-well lifting system magneto overtravel protection testing stand as described in claim 1, it is characterised in that: the friction
Wheel accelerator is three-level friction pulley accelerator.
9. deep-well lifting system magneto overtravel protection testing stand as described in claim 1, it is characterised in that: the pneumatic dress
The A pressure gauge (2-4) of real-time detection cylinder interior air pressure is housed on the cylinder (2-5) set.
10. deep-well lifting system magneto overtravel protection testing stand as claimed in claim 1 or 2, it is characterised in that: the gas
Pneumatic cylinder (2-9) left chamber inlet in dynamic device is equipped with the B pressure gauge (2-8) of real-time detection air pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820521.5A CN107741316B (en) | 2017-09-13 | 2017-09-13 | Deep-well lifting system magneto overtravel protection testing stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820521.5A CN107741316B (en) | 2017-09-13 | 2017-09-13 | Deep-well lifting system magneto overtravel protection testing stand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107741316A CN107741316A (en) | 2018-02-27 |
| CN107741316B true CN107741316B (en) | 2019-05-07 |
Family
ID=61235577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710820521.5A Active CN107741316B (en) | 2017-09-13 | 2017-09-13 | Deep-well lifting system magneto overtravel protection testing stand |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5965237A (en) * | 1982-10-05 | 1984-04-13 | Toyota Motor Corp | Damping force testing apparatus for shock absorber |
| CN100535633C (en) * | 2008-01-11 | 2009-09-02 | 中国矿业大学 | Multifunctional friction hoisting antiskid experimental device and method |
| CN102040141B (en) * | 2009-10-15 | 2013-06-19 | 河南理工大学 | Rope-free lifting machine using lifting force as brake drive force |
| CN103245479B (en) * | 2013-04-11 | 2016-07-06 | 莫凡 | Magnetic levitation type impact test platform |
| CN104677816B (en) * | 2014-12-05 | 2017-05-03 | 中国矿业大学 | Impact friction test system for winding hoisting rope of kilometer deep shaft |
| CN204439346U (en) * | 2015-02-26 | 2015-07-01 | 山东交通学院 | Circumference rotary type permanent-magnet speed buffer moment is test bed |
| CN104860038B (en) * | 2015-05-26 | 2017-05-17 | 中国矿业大学 | Coal mine belt-type conveying system falling coal impact energy buffer monitoring device and method |
| CN106698147B (en) * | 2016-12-05 | 2018-09-21 | 中国矿业大学 | A kind of deep-well lifting system intelligence anti-drop method and device |
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