CN110044601A - Mechanical anti-theft lock handle fatigue tester - Google Patents
Mechanical anti-theft lock handle fatigue tester Download PDFInfo
- Publication number
- CN110044601A CN110044601A CN201910480738.5A CN201910480738A CN110044601A CN 110044601 A CN110044601 A CN 110044601A CN 201910480738 A CN201910480738 A CN 201910480738A CN 110044601 A CN110044601 A CN 110044601A
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- finger
- plate washer
- sliding slot
- handle
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- 238000012360 testing method Methods 0.000 claims abstract description 50
- 230000009471 action Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 6
- 239000003302 ferromagnetic material Substances 0.000 claims description 4
- 206010016256 fatigue Diseases 0.000 description 46
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 238000009661 fatigue test Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 244000060701 Kaempferia pandurata Species 0.000 description 1
- 235000016390 Uvaria chamae Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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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
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of mechanical anti-theft lock handle fatigue testers, it includes testing stand (1), first support (2) are equipped with above testing stand (1), motor (3) and bearing block (4) are fixed in first support (2), the output end of motor (3) is connected with rotation axis (5), and rotation axis (5) is threaded through on bearing block (4)；The rotation axis (5) is equipped with rotating wheel (7), and rotating wheel (7) is externally provided with more swing fingers (8)；Test specimen firm banking (9) are equipped with by the side of the first support (2), the surface of test specimen firm banking (9) is equipped with plate washer sliding slot (10), the top of test specimen firm banking (9) is equipped with fixed plate washer (11), slide damper (12) are embedded in plate washer sliding slot (10), it is clamped with lockset test specimen (16) between the fixation plate washer (11) and slide damper (12), handle (18) setting of the lockset test specimen (16) is on the rotation path for swinging finger (8).
Description
Technical field
The present invention relates to a kind of testing machine, in particular to a kind of mechanical anti-theft lock handle fatigue tester.
Background technique
All destruction can be generated under alternate stress effect in many of real work production component and part, such as gear
It is disconnected to engage destruction, the fracture of crankshaft, the fracture of connecting rod, the failure of spring, the fracture of blade and relatively large bridge fatigue
Equal breakoff phenomenons are split, different causes of accident is found after studying to these, although the intensity of these parts when in use is not
More than its yield strength, but because they are constantly by the effect of alternate stress, they still will form fatigue rupture mistake
Effect.Fatigue failure is the principal mode of part failure, has accounted for 80% or so in one-piece parts failure quantity.This is raw to machinery
Production produces significant impact, while also bringing many inconvenience to daily life.Therefore, researcher's discovery is to fatigue
Research very it is necessary to the various knowledge about fatigue are also gradually known to people.Practical studies by science prove, in reality
Component structural in the production of border will receive various unpredictable external factors to influence use condition when designing originally.
Therefore, the fatigue test for carrying out components and material members, tests its fatigue crack-resistant performance, and calculating its fatigue life is mesh
The main method of preceding domestic and international prevention fatigue rupture.Convenient for analysis and research, often to press the height for destroying cycle-index for tired point
For two classes: high cycles fatigue and low-cycle fatigue.High cycles fatigue (high cycle fatigue), acts on the stress level of part, component
Lower, the fatigue that destruction cycle-index is generally greater than 10000~100000 fatigue, such as spring, transmission shaft etc. belongs to such；
Low-cycle fatigue (low-cycle fatigue), it is higher to act on part, the stress level of component, destroys cycle-index and is generally below 10000
~100000 fatigue, such as the fatigue of pressure vessel, gas turbine parts.
For the fatigue life of test mechanical theftproof lock, need constantly to rotate the handle of theftproof lock in normal conditions of use
Until theftproof lock generates damage and is not available even.And this method for testing fatigue belongs to high cycle fatigue test.Therefore, mechanical anti-
Stealing lock handle fatigue tester is a high cycle fatigue test machine.With the development of fatigue study, researcher is no longer only fatigue
It is divided into high cycle fatigue and low-cycle fatigue, while the presence of super high cycle fatigue is also found in researcher.Traditional fatigue study is recognized
Will not occur fatigue fracture again after being subjected to 107 cyclic loadings for, material, and after 107 cyclic loadings no longer
The fatigue strength values that fatigue fracture occurs are known as the fatigue limit of the material.In the age that fatigue study is also more backward, people
Directly think that such material is that fatigue fracture will not occur.But in 1980, Naito et al. had found material at 107 times even
Fatigue fracture can still occur 108 times or more, the super high cycle fatigue of metal material just starts to be recognized by people since then.In recent years,
More and more researchers and scholar have carried out in-depth study to this field, and with aerospace, bullet train, vapour
The high speed development of garage's industry, Nuclear Power Industry, requirement of the machinery manufacturing industry to some Parts service life is higher and higher, most of
Components require carrying 108 numbers of cyclic loading or more, and some even requires to reach 1011 times.In such environmental requirement
Under, to the research ever more important of super high cycle fatigue.For service life of the test mechanical theftproof lock under super high cycle fatigue state, row
Occur the super high cycle fatigue test machine of some mechanical anti-theft locks in the industry, however existing test machine or structure is complicated, operation
Although cumbersome, expensive and be difficult to that large-scale promotion or structure are simple but test process is unreasonable, test effect is inaccurate
Really, it is difficult to effectively obtain the fatigue data of mechanical anti-theft lock.
Summary of the invention
The object of the present invention is to provide a kind of mechanical anti-theft lock handle fatigue testers.The present invention not only can be accurate
Ground measures the fatigue behaviour data of mechanical anti-theft lock, and the configuration of the present invention is simple, low in cost, easy to operate, suitable big rule
Mould is promoted.
Technical solution of the present invention: a kind of mechanical anti-theft lock handle fatigue tester, including testing stand, testing stand top are set
There is first support, motor and bearing block are fixed in first support, the output end of motor is connected with rotation axis, and rotation axis is threaded through
On bearing block；The rotation axis is equipped with rotating wheel, and rotating wheel is externally provided with more swing fingers；The side of the first support
Side is equipped with test specimen firm banking, and the surface of test specimen firm banking is equipped with plate washer sliding slot, and the top of test specimen firm banking, which is equipped with, to be fixed
Plate washer, is embedded with slide damper in plate washer sliding slot, and the top of the fixation plate washer is equipped with traction device, traction device it is another
End is connected with slide damper；The side of the fixation plate washer and slide damper is equipped with side plate washer, and side plate washer is equipped with
Locating shaft；Lockset test specimen is clamped between the fixation plate washer and slide damper, the handle setting of the lockset test specimen exists
On the rotation path for swinging finger.
In above-mentioned mechanical anti-theft lock handle fatigue tester, the traction device includes being fixed on the inside of fixed plate washer
The fixed block in face offers threaded hole on fixed block, fixing screws is equipped in threaded hole, traction spiral shell is connected in fixing screws
Nail；The top of the slide damper is equipped with notch, and traction screw is caught in notch, on traction screw and slide damper it is outer
Side external screw thread is combined with nut.
In mechanical anti-theft lock handle fatigue tester above-mentioned, the swing finger includes being fixed on rotating wheel side
The end of base shaft, base shaft is equipped with end cap.
In mechanical anti-theft lock handle fatigue tester above-mentioned, the side of the rotating wheel is provided with multiple along outer wheel face
Fixed side panel, fixed side panel are equipped with spring, and the end of spring is connected with finger is swung；The fixed side panel it is counterclockwise
Direction is equipped with twice finger sliding slot, and the twice finger sliding slot is parallel with the radius of rotating wheel；The swing finger
Root set there are two card column, card column is embedded in corresponding sliding slot；When the rotating wheel rotates, finger is swung in spring
Sliding slot end is moved outwardly to along finger sliding slot under the action of pulling force and centrifugal force, is connect to increase with the handle of lockset test specimen
Contacting surface product, the swing finger under rotary state drive handle to rotate down, and drive handle to rotate down process swinging finger
It is middle swing finger be subject to centrifugal force, spring to swing finger pulling force and handle back stretch keep balance so that swing
Finger is contacted with handle always, and the power for swinging finger squeeze grip is in slow linear change, realizes that the normal mode of handle is intended that
With.
In mechanical anti-theft lock handle fatigue tester above-mentioned, the end cap is ferromagnetic material, and the end of end cap is set
There is rubber cambered surface.
In mechanical anti-theft lock handle fatigue tester above-mentioned, the twice finger sliding slot is arranged in parallel, and finger is sliding
Slot and swing finger are arranged in a crossed manner.
Compared with prior art, the invention has the following advantages:
1, the present invention is provided with first support on testing stand, and motor-driven rotation axis, rotation axis are equipped in first support
It is equipped with rotating wheel, rotating wheel, which is equipped with, swings finger；Lockset test specimen, the handle of lockset test specimen are fixed with by the side of first support
Hand is arranged on the rotation path of pendulum branch finger, will drive handle when swinging finger rotation and rotates down, and the one of simulation handle
Secondary unlatching, after handle rebound, the lower finger of swing together is contacted with handle drives handle to rotate down again, circuits sequentially, thus real
The fatigue test of existing mechanical anti-theft lock handle.At the same time, the present invention is by fixed lockset test specimen, by being arranged first
Being fixedly secured for lockset test specimen is effectively ensured in the traction of traction device in fixation plate washer and slide damper beside bracket.Thus
As it can be seen that the present invention not only can accurately measure the fatigue behaviour data of mechanical anti-theft lock, but also the configuration of the present invention is simple, cost
Cheap, easy to operate, suitable large-scale promotion.
2, outer wheel face further, is provided with multiple fixed side panels in the side of rotating wheel, fixed side panel is equipped with bullet
Spring, the end of spring are connected with finger is swung；Twice sliding slot is offered on the wheel face of rotating wheel, is swung finger and is passed through card column
It is embedded in sliding slot.When the described rotating wheel rotation, swing finger under the action of the pulling force of spring and centrifugal force along the chute to
It is moved to sliding slot end outside, to increase the contact area with the handle of lockset test specimen, the swing finger band under rotary state
Dynamic handle rotates down, and swings that centrifugal force that finger is subject to, spring is to pendulum during swinging finger and handle is driven to rotate down
Start refer to pulling force and handle back stretch keep balance so that swing finger contacted always with handle, and swing finger press
The power of handle hand is in slow linear change, realizes that the normal mode of handle is intended that use.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of traction device；
Fig. 3 is the structural schematic diagram for swinging finger and spring；
Fig. 4 is the action principle figure for swinging finger and driving handle rotation initial stage；
Fig. 5 is the action principle figure for swinging finger and driving the handle rotation later period.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment: a kind of mechanical anti-theft lock handle fatigue tester, as shown in attached drawing 1- Fig. 3, including testing stand 1, test
First support 2 is fixed with by screw above platform 1, first support includes 3 upward section material frames, in first support 2 from it is inner to
(visual angle Fig. 1) is fixed with motor 3 and two bearing blocks 4 outside, and the output end of motor 3 is connected with rotation axis 5, and rotation axis 5 is threaded through
On bearing block 4；Rotating wheel 7 is fixed in the rotation axis 5, rotating wheel 7 is externally provided with 3 swing fingers 8, and it is uniform to swing finger
It is fixed on rotation wheel side.Test specimen firm banking 9 is equipped with by the side of the first support 2, the surface of test specimen firm banking 9 is set
There is plate washer sliding slot 10, the top of test specimen firm banking 9 is equipped with fixed plate washer 11, is embedded with slide damper 12 in plate washer sliding slot 10,
Plate washer sliding slot section can be dovetail shaped, be also possible to I-shaped shape, the bottom of slide damper is consistent with plate washer sliding slot, and is embedded
In plate washer sliding slot.The top of the fixation plate washer 11 is equipped with traction device 13, the other end and sliding shelves of traction device 13
Plate 12 is connected；Specifically, the traction device 13 includes the fixed block 131 for being fixed on fixed 11 medial surface of plate washer, fixed
Threaded hole 132 is offered on block 131, and fixing screws 133 are equipped in threaded hole 132, fixing screws are screwed into threaded hole from side,
It tightens motionless more than.Traction screw 134 is connected in fixing screws 133, hole is arranged at traction screw bottom, and aperture is greater than fixing screws
Diameter, first the bottom outlet of traction screw is through in fixing screws before fixing screws pass through threaded hole, traction screw can be around
Fixing screws rotation.The top of the slide damper 12 is equipped with notch 135, the size of notch than traction screw diameter slightly
Greatly, allow traction screw to stick into notch, and too big displacement will not be generated.Traction screw, which protrudes into notch, can be traction spiral shell
After nail turns to horizontal position, slide damper is slided from outside to inside, packs into the notch of slide damper on traction screw.Described leads
Draw screw 134 to be caught in notch 135, on traction screw 134 and the lateral surface external screw thread of slide damper 12 is combined with nut
136.The side of the fixation plate washer 11 and slide damper 12 is equipped with side plate washer 14, and side plate washer 14 is equipped with locating shaft
15；Lockset test specimen 16 is clamped between the fixation plate washer 11 and slide damper 12, lockset test specimen is mechanical anti-theft lock handle.
Tightening nuts make slide damper close to fixed plate washer, thus fixed lockset test specimen.The handle 18 of the lockset test specimen 16 is set
It sets on the rotation path for swinging finger 8；There is substantial portion of lockset to only have in lock tongue insertion lock core, door handle is just able to rotate,
Fixed lock tongue 17, the lockhole phase contract of fixed lock tongue 17 and lockset test specimen 16 can be set in the shaft end of locating shaft 15 for these locks
It closes, the lock core of fixed lock tongue and lockset test specimen matches.
The swing finger 8 includes the base shaft 19 for being fixed on rotating wheel side, and the end of base shaft 19 is equipped with end cap 20.Institute
The end cap 20 stated is ferromagnetic material, and the end of end cap 20 is equipped with rubber cambered surface 210.The twice finger sliding slot 23 is set in parallel
It sets, and finger sliding slot 23 and swing finger 8 are arranged in a crossed manner.The end cap is that ferromagnetic material may make the end for swinging finger to begin
It fits eventually with grip surface, is not in swing the case where finger hits handle back appearance.
As further preferably, the side of the rotating wheel 7 is provided with multiple fixed side panels 21 along outer wheel face, fixed
Side plate can be the arc side plate of the wheel face outside rotating wheel, and spring 22, the end of spring 22 and pendulum are fixed on fixed side panel 21
It starts to refer to that 8 bottom side is connected.The counter clockwise direction of the fixed side panel 21 be equipped with twice finger sliding slot 23, described two
Road finger sliding slot 23 is parallel with the radius of rotating wheel 7, as shown in Fig. 3；There are two the root of the swing finger 8 is set
Card column 24, card column 24 are embedded in corresponding sliding slot 23, and it is round pie nut cap that the specific structure of card column, which can be both ends, and card column is worn
Overswing starts to refer to and sliding slot, the nut cap on top are covered in swing finger surface, and the nut cap of lower part is stuck in finger sliding slot, cap surface
It is smooth, it is slided in finger sliding slot with facilitating；When the rotating wheel 7 rotates, pulling force and centrifugation of the finger 8 in spring 22 are swung
Sliding slot end is moved outwardly to along finger sliding slot 23 under the action of power, to increase the contact surface with the handle of lockset test specimen 16
Product, the swing finger under rotary state drive handle to rotate down, and drive handle to put during rotating down swinging finger
It starts to refer to that the centrifugal force being subject to, spring keep balance to the back stretch of the pulling force and handle that swing finger, so that swinging finger
Always it is contacted with handle, and the power for swinging finger squeeze grip is in slow linear change, realizes that the normal mode of handle is intended that use.It is complete
Whole action process is as follows: as shown in Fig. 4, swings finger and rotates down when touching grip surface, the bounce F1 of handle
It is supplied to and swings the upward power of finger, swing pulling force F3 of the finger simultaneously by centrifugal force F2 and spring, protected under the action of three
Maintain an equal level weighing apparatus.During swinging finger and push handle and rotate down, the screen resilience waved can change, screen resilience down
Can be bigger, while action direction can also change, and will drive swing finger and slide in finger sliding slot, but can reach always
New balance, as shown in Fig. 5, when swing finger continues to rotate down, the thrust that handle drives increases, and pushes and swings finger
It is moved into finger sliding slot, spring and centrifugal force pulls swing finger and smoothly refer to that sliding slot is outside, reach new balance.Of the invention
It can be designed so that swing finger is bonded grip surface always, and be applied to the power even variation of grip surface and vary less,
The present invention can true simulation manually opened lockset the case where, to improve the accuracy of measurement.Existing most of measurement
Tool only start to refer to and touch with handle by pendulum rotating, and this very stiff and demanding contact can not unlatching lockset in actual response reality
Situation, and directly collision can bring vibration to lockset, lock members easy to damage, therefore can not reactor product testing fatigue
Truth.
Claims (6)
1. mechanical anti-theft lock handle fatigue tester, it is characterised in that: including testing stand (1), be equipped with first above testing stand (1)
Bracket (2) is fixed with motor (3) and bearing block (4) in first support (2), and the output end of motor (3) is connected with rotation axis (5),
Rotation axis (5) is threaded through on bearing block (4)；The rotation axis (5) is equipped with rotating wheel (7), and rotating wheel (7) is externally provided with more
It swings finger (8)；Test specimen firm banking (9) are equipped with by the side of the first support (2), the surface of test specimen firm banking (9)
Equipped with plate washer sliding slot (10), the top of test specimen firm banking (9) is equipped with fixed plate washer (11), is embedded with cunning in plate washer sliding slot (10)
The top of dynamic plate washer (12), the fixation plate washer (11) is equipped with traction device (13), the other end and cunning of traction device (13)
Dynamic plate washer (12) are connected；The side of the fixation plate washer (11) and slide damper (12) is equipped with side plate washer (14), side
Plate washer (14) is equipped with locating shaft (15)；Lockset test specimen is clamped between the fixation plate washer (11) and slide damper (12)
(16), handle (18) setting of the lockset test specimen (16) is on the rotation path for swinging finger (8).
2. mechanical anti-theft lock handle fatigue tester according to claim 1, it is characterised in that: the traction device
(13) include the fixed block (131) for being fixed on fixed plate washer (11) medial surface, offer threaded hole (132) on fixed block (131),
It is equipped with fixing screws (133) in threaded hole (132), traction screw (134) is connected in fixing screws (133)；The cunning
The top of dynamic plate washer (12) is equipped with notch (135), and traction screw (134) is caught in notch (135), on traction screw (134)
And the lateral surface external screw thread of slide damper (12) is combined with nut (136).
3. mechanical anti-theft lock handle fatigue tester according to claim 1, it is characterised in that: the swing finger
It (8) include the base shaft (19) for being fixed on rotating wheel side, the end of base shaft (19) is equipped with end cap (20).
4. mechanical anti-theft lock handle fatigue tester according to claim 1, it is characterised in that: the rotating wheel (7)
Side be provided with multiple fixed side panels (21) along outer wheel face, fixed side panel (21) be equipped with spring (22), the end of spring (22)
Portion is connected with finger (8) are swung；The counter clockwise direction of the fixed side panel (21) is equipped with twice finger sliding slot (23), described
Twice finger sliding slot (23) it is parallel with the radius of rotating wheel (7)；Block there are two setting the root of the swing finger (8)
Column (24), card column (24) are embedded in corresponding sliding slot (23)；When the rotating wheel (7) rotates, finger (8) are swung in spring
(22) sliding slot end is moved outwardly to along finger sliding slot (23) under the action of pulling force and centrifugal force, to increase and lockset test specimen
(16) contact area of handle, the swing finger under rotary state drive handle to rotate down, and drive handle swinging finger
Hand swings centrifugal force, the spring that finger is subject to and keeps to the back stretch of the pulling force and handle that swing finger during rotating down
The power that balance contacts always with handle so that swinging finger, and swings finger squeeze grip is in slow linear change, realizes handle
Normal mode be intended that use.
5. mechanical anti-theft lock handle fatigue tester according to claim 3, it is characterised in that: the end cap (20) is
Ferromagnetic material, and the end of end cap (20) is equipped with rubber cambered surface (210).
6. mechanical anti-theft lock handle fatigue tester according to claim 4, it is characterised in that: the twice finger is sliding
Slot (23) is arranged in parallel, and finger sliding slot (23) and swing finger (8) are arranged in a crossed manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910480738.5A CN110044601B (en) | 2019-06-04 | 2019-06-04 | Fatigue testing machine for mechanical anti-theft lock handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910480738.5A CN110044601B (en) | 2019-06-04 | 2019-06-04 | Fatigue testing machine for mechanical anti-theft lock handle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110044601A true CN110044601A (en) | 2019-07-23 |
| CN110044601B CN110044601B (en) | 2023-11-03 |
Family
ID=67284478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910480738.5A Active CN110044601B (en) | 2019-06-04 | 2019-06-04 | Fatigue testing machine for mechanical anti-theft lock handle |
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| Country | Link |
|---|---|
| CN (1) | CN110044601B (en) |
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| Publication number | Publication date |
|---|---|
| CN110044601B (en) | 2023-11-03 |
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