CN108051322A - A kind of concrete fatigue impact test apparatus and its test method - Google Patents
A kind of concrete fatigue impact test apparatus and its test method Download PDFInfo
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- CN108051322A CN108051322A CN201711235189.2A CN201711235189A CN108051322A CN 108051322 A CN108051322 A CN 108051322A CN 201711235189 A CN201711235189 A CN 201711235189A CN 108051322 A CN108051322 A CN 108051322A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0039—Hammer or pendulum
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Abstract
A kind of concrete fatigue impact test apparatus and its test method, the device are by 1, control section；2nd, motor；3rd, transmission device；4th, hammer device is hung；5th, hammer device movement montant is hung；6th, drop hammer；7th, drop hammer motion structure；8th, concrete sample support carriers；9th, cross bar；10th, device fuselage main body forms：Its test method step has：Step 1 is stained with the rubber that thickness is 2cm in tup impact end, while impact force when ensureing to be not added with rubber with tup is identical；Concrete sample is placed in concrete sample support carriers 8 by step 2, ensures that test specimen center is overlapped with the center for 6 drop points that drop hammer；Step 3, starter, 6 promotions will be dropped hammer to predetermined altitude by hanging hammer device 4, at this point, drop hammer 6 automatic release hammerings on test specimen, when hanging hammer device 4 and moving to bottom, automatic hang-up drops hammer 6；And so on, the fatigue impact of concrete is realized.
Description
(1), technical field
The present invention provides a kind of concrete fatigue impact test apparatus and its test method, it is that one kind can realize coagulation
The device and its test method of native fatigue impact, belong to field of civil engineering.
(2), background technology
When carrying out concrete strength test, it would be desirable to the number of shocks of concrete is measured, to judge that concrete resists punching
Hit the ability of load.Existing impact test apparatus occupies high ratio in manual operation, and experiment process is relatively complicated, together
When largely waste the limited test period of testing crew.At present, at home it is not yet found that coagulation can be carried out
The device of native fatigue impact, but from the point of view of the life cycle management of concrete, the impact-type that concrete structure is born is mainly tired
Labor is impacted, this just not very coincide with the method for our existing experimental provisions, therefore we are badly in need of a kind of concrete fatigue impact
Experimental rig and method, the situation of load is absorbed impact with the preferably simulation concrete whole service life cycle.
Under existing concrete impact test, concrete sample destroys too fast；For plain concrete, if using weight
When the dropping hammer of 3kg falls in the place of 300mm high, general impact will just destroy concrete sample 3-4 time, at this time if impacted
Number differs once, and error is just up to 25%-33%, even if this error is also extremely huge in Practical Project
Greatly, so we make impact head into flexible material, on the premise of keeping impact pressure constant so that per Secondary Shocks to coagulation
It destroys and reduces caused by native inside, the destructive process of entire concrete is divided into many small stages, it, can when hop count is enough
To regard entire destructive process as a continuous process, and in the destructive process of normal concrete, between every Secondary Shocks
Destruction to concrete is a stepped destruction in fact, so being unfavorable for judging damage effect of the impact to concrete.
The purpose of the present invention is to propose to a kind of concrete fatigue impact test method, i.e. one kind can understand concrete and exist
The method of destructive process under impact load.This method makes the material of concrete impact hammer head into rubber by existing rigid material
The flexible material of glue one kind, while by adjusting the weight and shock height of jump bit so that impact pressure reaches 1.5MPa,
In the case of ensureing that impact pressure is constant, we can cause concrete, and in impact, destructive process is by original mutation rank
Scalariform becomes more continuous state, and so we can more be apparent from destructive process of the concrete in impact
And mechanism.
(3), the content of the invention
1st, purpose：
The object of the invention is to produce a kind of experimental rig that can carry out concrete fatigue impact study simultaneously it is a kind of into
The test method of row concrete fatigue impact, situation is born with the impact load of simulation concrete structure reality, is preferably predicted
The destruction of concrete structure.
2nd, technical solution：
Concrete fatigue impact test apparatus proposed by the present invention and method are on the basis of existing impact experiment apparatus
On redesigned, by impact experiment apparatus drop hammer with hang hammer device phase separation, set on dropping hammer a certain number of
Card slot, when extension hammer device, which is reduced to certain altitude, touches the device 1 set on montant, the buckle hung on hammer will block automatically
It drops hammer, by drop hammer lifting to certain altitude, at this point, we can set a device n (height on the montant for hanging hammer device traveling
It is adjustable), this device can make extension hammer the release that will drop hammer automatically when device arrives at this height into shape, hang hammer device and have motor drive perpendicular
Reciprocation cycle is realized on bar, reaching automatic fatigue impact with this obtains purpose.
First, the present invention-kind of concrete fatigue impact test apparatus：It is made of following several parts：1st, control section；2nd, it is electric
Machine；3rd, transmission device, (331) containing buckle；4th, hammer device is hung, containing card slot (421)；5th, hammer device movement montant is hung；6th, drop hammer
(weight-adjustable)；7th, drop hammer motion structure；8th, concrete sample support carriers；9th, cross bar；10th, device fuselage main body
2nd, the relation between above-mentioned each component：
Control section (1) is connected by electric lead with motor (2)；Motor (2) is directly connected with transmission device (3), hangs hammer
Device (4) then hangs the card slot (421) at hammer device (4) rear portion by being located at and one is located at transmission in the middle slip of card slot (421)
Buckle (331) on device is connected with transmission device (3)；The front that hammer device movement montant (5) is vertically placed on the device is hung,
Hammer movement montant (5) is hung through hanging hammer device (4), while hangs hammer device (4) and can move montant (5) along hammer device is hung and transport up and down
It is dynamic；The cylindrical-shaped structure that (6) are made of by one three small column montants that the drops hammer motion structure (7) that drops hammer limits its plane side
To displacement, which passes through upper and lower two cross bars (9) and device fuselage main body (10) and is rigidly connected, and hangs hammer
Device movement montant (5), which is located at, to drop hammer between motion structure (7) and device fuselage main body (10)；Concrete sample support construction
(8) it is located at the lower part of device fuselage main body (10), while intermediate position is exactly the drop point of (6) of dropping hammer；See attached drawing 1.
Three：The self structure of each component of the experimental rig：
1st, control section：Control section is made of (12) two parts of software (11) and hardware, their mutual passes
System is：Software (11) is embedded by microcontroller (121) in hardware components (12), the electric signal generated by microcontroller (121)
Entire hardware components (12) are controlled, meanwhile, the infrared obstacle avoidance module (122) in hardware components (12) generates at work
Electric signal, by microcontroller (121) adjust, react in software (11), software (11) pass through the electric signal to generation with from
The silence signal of body compares, if reaching condition, sends the electric signal being stopped；
" software (11) " are self-programming program：Its program chart is briefly described as follows：After the power supply of device is connected,
Entire control section is started to work, we such as hammer secondary by hardware components (12) to software section input control parameter at this time
Number clicks on START button, starts the initial hammer number n=0 of machine, at this time software section, concrete base foil gauge electricity
Road in an ON state, when drop hammer (6) pump by infrared obstacle avoidance module (122) when, infrared obstacle avoidance module
(122) electric signal can be generated, microcontroller receives the electric signal from infrared obstacle avoidance module (122), while judges coagulation by software
Whether the foil gauge circuit of native bottom is connected："No", which is then tested, to be terminated, "Yes" then n=n+1, then n is judged by software<Initially set
Put hammer number："No", which is then tested, to be terminated, and "Yes", which is then dropped hammer, to be continued to move back and forth, and experiment continues.Until experiment terminates.；See attached
Shown in Fig. 3；
" hardware components (12) ", be by microcontroller (121), infrared obstacle avoidance module (122), control keyboard (123), after
Electric appliance (124) and power supply (125) composition；Their mutual relations are：The experimental rig shares two parts power supply (125),
That is control section power supply (1251) and operation partial power (1252), the power supply (1251) of control section is only microcontroller
(121), infrared obstacle avoidance module (122), control keyboard (123) and relay (124) power supply；Infrared obstacle avoidance module (122) exists
It drops hammer when (6) are often passed through one time and generates an electric signal, while electric signal is passed back in microcontroller (121), control keyboard
(123) it is used for setting the startup, stopping or pause of hammer number and manual control machine；Relay (124) is to work as software
(11) when judging to reach experiment stop condition, microcontroller (121) sends electric signal, and control relay (124) powers off, so as to cut off
Run the power supply of part；Infrared obstacle avoidance module (122), control keyboard (123) and relay (124) respectively pass through conductance
Line (Du Pont's line) is connected with microcontroller (121).
It is somebody's turn to do the structure of " microcontroller (121) "：Select existing model-Atmega128；
It is somebody's turn to do the structure of " infrared obstacle avoidance module (122) "：Select the infrared obstacle avoidance module of telesky；
It is somebody's turn to do the structure of " control keyboard (123) "：Select waveshare4*4keypad key-press modules；
It is somebody's turn to do the structure of " relay (124) "：Select 1 road 5v low level trigger relay modules of existing product Risym；
It is somebody's turn to do the structure of " power supply (125) "：Power supply selects existing product：MS-50-12；
2nd, motor：Motor is decelerating motor (2), can meet the needs of long-time heavy service, be installed additional on motor with teeth
Wheel group, to meet the needs of different frequency of impacts；The decelerating motor can select existing product：Select Eupolyphoge sinensis motor, model
GV-22-750-25-S-B-G1-LB. it is：Vertical decelerating motor, diameter of axle 22mm, power 750W, reduction ratio 25:1, the electricity
The input speed of machine is 1420rpm；
3rd, transmission device：Transmission device (3) is by gear-box (31), two gears (32) i.e. driving gear (321) and driven
Gear (322) and a driving chain (33) are made of buckle (331) on driving chain, and one of driving gear (321) is logical
It crosses gear-box (31) to be connected with decelerating motor (2), which is driving gear (321)；Second gear, that is, driven gear simultaneously
(322) it is connected by chain (33) and driving gear (321).
The structure of gear-box (31)：The gear-box is T-shaped steering box, and speed of slowing down is than being 1:1,
Two gears (32) i.e. structure of driving gear (321) and driven gear (322)：The specification of two gears is 5
Divide the gear of 15 teeth, facewidth 5mm；
The structure of the driving chain (33)：Driving chain be general industry driving chain, specification be 5 points (10A), a length of 2
Rice；The a certain section coupling part of driving chain adds buckle (331)；
4th, hammer device is hung：The movement for hanging hammer device (4) is driven by the movement of transmission device (3)；Hammer device (4) is hung by block tongue
(41), two lateral springs (431) of matrix (42), three springs (43) i.e. and a perpendicular spring (432) and the top with top disc
Pin (44) (rear abbreviation " thimble ") composition；When hanging hammer device (4) and moving to the bottom for hanging hammer device movement montant (5), thimble
(44) bottom top plate (51) is contacted, is jacked up, the spring 431 that block tongue (41) is distributed in both sides is held to the side away from the device
To movement, so as to tangle drop hammer (6)；When extension hammer device (4) moves to specified altitude assignment, block tongue (41) is hung hammer device movement and is erected
Projective structure (52) on bar (5) is pushed up to be moved to negative direction, and thimble (44) is withstood by the spring (432) of its underpart and moves downward,
So as to fix block tongue (41) in released position with the disk on thimble (44).At this point, completing one hangs hammer Xun Huan.Hang hammer device
(4) matrix (42) partly has the card slot (421) of a lateral arrangement towards (10) one middle side part of device fuselage main body, passes through
Card slot (421) by one can on card slot (421) buckle (331) of transverse shifting and transmission device (3) driving chain (33)
It is connected, hammer device (4) movement is hung so as to drive；
It is somebody's turn to do the shape and structure of " block tongue (41) "：Its shape and structure is：The shape of block tongue (41) is approximate wedge structure, tiltedly
The length in portion is 15mm, is a length of 70mm after inclined portion, width 60mm, thickness is the hexahedron of 10mm, in block tongue (41) close to the dress
It puts there are one the protrusion along the elongated interface dimensions in side for 5*5mm in a line of fuselage main body (10), apart from this edge 25mm
Position be provided with a groove along the logical wide 60*5*5mm of block tongue (41)；It is 100 that an a diameter of 4mm length is placed in groove
Steel cylinder see Figure of description 4；
It is somebody's turn to do the shape and structure of " matrix (42) "：Its shape and structure is：Matrix (42) is hexahedron structure, except facing device machine
Outside 10 one side of body main body is not closed, the steel plate that remaining five face is 10mm with thickness surrounds, two sides adjacent with not sealing surface
Plate size is 60*90 (height) mm, and the plate size of sealing surface offside is not 80*90 (height) mm；Steel plate at the top of matrix (42)
Size is 100*100mm, and the size of the steel plate of matrix (42) bottom is 60*80mm, steel plate and bottom at the top of the matrix (42)
Each hole there are one 25*25mm is opened in the centre of steel plate, while is provided with again in the big one side of the hole approaching device fuselage main body (10)
The aperture of one 10*10mm is connected with macropore, forms the hole of " convex " shape, apart from the place of aperture 5mm, the close device
The circular hole there are one a diameter of 7mm is opened in fuselage main body (10) one side, with to pass through thimble (44)；In unclosed one side, one is welded with
A T-steel plate (edge of a wing of T-steel plate is welded on matrix (42) unclosed face), size are the wide 30mm in the edge of a wing, thick 5mm, are grown
100mm；Web high 25mm, thick 5mm, long 100mm；The T-steel plate forms a width with the steel plate at the top of matrix (42)
The card slot (421) of 15mm；There are two the small part of similar door type structure, interstitial holes for the two sides weldering of steel plate at the top of matrix (42)
Size be 10 (height) * 12 (width) mm；At two angles of the steel plate away from device fuselage main body (10) at top, respectively there are one ranks for weldering
Terraced cylinder, bottom plate body diameter 8mm, high 7mm, Upper cylindrical high 5mm, diameter 5mm are shown in Figure of description 5；
It is somebody's turn to do the shape and structure of " spring (43) "：Should " spring (43) " include lateral spring (431) and perpendicular spring (432), all for
Spring is compressed for stainless steel；The lateral spring (431) keeps flat natural length as 5cm, compression spring line footpath 1mm, spring inside diameter 5mm；It should
Perpendicular spring (432) keeps flat natural length as 10cm, compression spring line footpath 2mm, spring inside diameter 10mm；
It is somebody's turn to do the shape and structure of " thimble (44) "：Its shape and structure is：Thimble (44) is the acicular texture of overall length 143mm, is pushed up
Portion's disk diameter is 15mm, thickness 3mm；Disk lower part be diameter 6mm, the cylinder of long 140mm；See Figure of description 6；
5th, hammer device movement montant is hung：The prism that extension hammer device movement montant (5) is 3cm*3cm for an interface dimensions
Bar, bottom is there are one top plate (51), and there are one the adjustable bulge-structures of vertical position (52) on top；
6th, drop hammer (weight-adjustable)：Dropping hammer, (6) (hammering bottom surface more than 10cm is emptied, outer wall thickness for a hollow cylindrical tube
5mm), the side for hammering more than bottom surface 10cm is distributed with screw thread, and extension hammer device (4) is facilitated to hang up；Simultaneously among inner bottom surface
There are one depth 3cm, the screw hole of a diameter of 14mm, facilitate installation screw rod so as to change the weight of (6) of dropping hammer；
7th, drop hammer motion structure：Motion structure (7) drop hammer by three thin cylindrical bar (71) bars and the annulus of upper bottom surface
(72) form, three thin cylindrical bar (71) is evenly distributed on annulus, drop hammer (6) when moving by upper and lower annulus (72)；See
Bright book attached drawing 7
It is somebody's turn to do the shape and structure of " cylindrical bar (71) "：Cylindrical bar (71) is the long 700mm that cross sectional dimensions is 25mm*25mm
Solid steel cylindrical bar；
It is somebody's turn to do the shape and structure of " annulus (72) "：It is somebody's turn to do the shape and structure of " annulus (72) "：The face shaping of annulus (72) is song
Side rectangle, thickness 10mm, a length of 85mm of straight flange, curl are the semicircle of a diameter of 85mm, and a diameter is opened at position in its center
For the circular hole of 55mm；
8th, concrete sample support carriers：Concrete sample support carriers (8) by bottom plate (81), two top plates (82) and
Four side plate (83) compositions, top plate (82) and side plate (83) top are provided with threaded hole.Side plate (83) and top plate (82) pass through weldering
It connects and is rigidly connected with bottom plate (81).
It is somebody's turn to do the shape and structure of " bottom plate (81) "：Should the shape and structure of " bottom plate (81) " be：Bottom plate (81) main part is one
The rectangular steel plates of a 450*150*15mm, in elongatedness direction, away from have at short side 50mm an arc groove (away from short side 50mm, away from
At the 10mm height of its surface, the circular milling using radius as 15mm goes out the circular arc)；Simultaneously along its length, in its short side center,
Respectively choose a long 80mm, sectional dimension is the short beam of 10*15mm；See Figure of description 8；
It is somebody's turn to do the shape and structure of " top plate (82) "：Should the shape and structure of " top plate (82) " be：Add two by a rectangular body
Isosceles right triangle gripper shoe groups are into rectangular body is in its center away from the screw hole there are one M10 at the 30mm of top, in its bottom
At center, the slot of one 10 (width) * 15 (height) mm has been opened；The right angle length of side 70mm of two isosceles right triangle support plates, with
One right-angle side is welded on the both sides of fluting by the mode of electric welding.See Figure of description 9；
It is somebody's turn to do the shape and structure of " side plate (83) "：Should the shape and structure of " side plate (83) " be：Main body is a high 180mm, wide
100mm, the rectangular steel plates of thick 10mm, away from the screw hole for being provided with M10 at the top of it at 15mm centers；See Figure of description 10；
9th, cross bar：The structure of cross bar (9)：Cross bar (9) is a size for long 250mm, the steel square of wide 85mm, thick 10mm
Shape quarter butt；
10th, the structure of device fuselage main body (10)：Device fuselage main body (10) is a high 1500mm, long 500mm, width
The rectangular box shape object of 300mm, the steel sheet that external military thickness is 2mm are closed；On device fuselage main body (10) top
Control section 1 is placed in the space of 200mm；Motor (2) and power supply (125) are placed in the position of 200-1100mm from top to bottom；
For connecting concrete sample support carriers (8), (concrete sample support carriers (8) rigid connection is in device for the position of lower part 200mm
The outside of fuselage main body (10) ultimately forms a L-type structure with device fuselage main body (10)；See attached drawing 2.
The function of each part mentioned above
1st, control section：Control section is made of (12) two parts of software (11) and hardware, and software program is self-programming
Program, hardware components are by microcontroller (121), infrared obstacle avoidance module (122), control keyboard (123), relay (124) and power supply
(125) form.
2nd, motor：Motor is decelerating motor, can meet the needs of long-time heavy service, gear is added on motor
Group, to meet the needs of different frequency of impacts.
3rd, transmission device：Transmission device is by gear-box (31), two gears (32) (master gear (321) and driven gears
(322)) and a driving chain (33) (is made of, one of gear (321) (driving gear on driving chain buckle (331)
(321)) it is connected by gear-box (31) and decelerating motor (2)；Second gear (322) (i.e. driven gear) passes through chain simultaneously
(33) it is connected with driving gear (321).
4th, hammer device is hung：The movement for hanging hammer device is driven by the movement of transmission device 3；Hammer device is hung by block tongue (41), base
Body (42), three springs (43) (two lateral springs (431) and a perpendicular spring (432)) and the thimble (44) with top disc
(rear abbreviation " thimble ") composition；When hanging hammer device (3) and moving to the bottom for hanging hammer device movement montant (5), thimble (44) connects
Portion is bottomed out, is jacked up, the spring (431) that block tongue (41) is distributed in both sides is held to away from the direction of the device and move, thus
It tangles drop hammer (6)；When extension hammer device (4) moves to specified altitude assignment, block tongue (41) is hung convex on hammer device movement montant (5)
Go out structure (52) and push up and moved to negative direction, thimble (44) is withstood by the spring (432) of its underpart and moves downward, so as to use thimble
(44) disk on fixes block tongue (41) in released position.At this point, completing one hangs hammer Xun Huan.Hang the matrix of hammer device (4)
(42) one middle side part of part facing device fuselage has the card slot (421) of a lateral arrangement, can be by one by card slot (421)
The buckle (331) of transverse shifting is connected with the driving chain (33) of transmission device (3) on card slot (421), and hammer dress is hung so as to drive
Put (3) movement；
5th, hammer device movement montant is hung：The prism bar for being 3cm*3cm for an interface dimensions, there are one top plates for bottom
(51), there are one the adjustable bulge-structures of vertical position (52) on top.
6th, drop hammer (weight-adjustable)：Dropping hammer, (hammering bottom surface more than 10cm is emptied, outer wall thickness for a hollow cylindrical tube
5mm), the side for hammering more than bottom surface 10cm is distributed with screw thread, and extension hammer device (4) is facilitated to hang up；Simultaneously among inner bottom surface
There are one the screw holes of Shen 3cm, facilitate and install screw rod additional so as to change the weight dropped hammer；
7th, drop hammer motion structure：Motion structure (7) drop hammer by three thin cylinder thin bars (71) and the annulus of upper bottom surface
(72) form, three thin cylindrical bar (71) is evenly distributed on annulus (72), drop hammer (6) when moving by upper and lower annulus (72).
8th, concrete sample support carriers：Concrete sample support carriers (8) by bottom plate (81), two top plates (82) and
Four side plate (83) compositions；Top plate (82) and side plate (83) top are provided with threaded hole.Side plate (83) and top plate (82) pass through weldering
It connects and is rigidly connected with bottom plate (81).
9th, cross bar：The structure of cross bar (9)：Cross bar (9) is a size for long 250mm, the steel square of wide 85mm, thick 10mm
Shape quarter butt.Cross bar (9) is by the way that annulus (72) and the device are rigidly connected, and so as to drop hammer, motion structure (7) is fixed on the examination
On experiment device.
10th, the structure of device fuselage main body (10)：Device fuselage main body (10) is a high 1500mm, long 500mm, width
The rectangular box shape object of 300mm, the steel sheet that external military thickness is 2mm are closed；On device fuselage main body (10) top
Control section (1) is placed in the space of 200mm；Motor (2) and power supply are placed in the position of 200-1100mm from top to bottom
(125)；The position of lower part 200mm is used for connecting concrete sample support carriers (8) (concrete sample support carriers (8) rigid connection
In the outside of device fuselage main body (10), a L-type structure is ultimately formed with device fuselage main body (10)；See attached drawing 2.
The percussion mechanism operational process of the experimental rig of concrete fatigue impact：
First, the number of this Secondary Shocks is set on control device, and is pasted in the centre position on the opposite of test specimen shock surface
Good foil gauge；Foil gauge is connected in control section (1) simultaneously, starts motor (2), then experimental provision brings into operation.At this time
Transmission device (3) drives extension hammer device (4) to move montant (5) setting in motion along hammer device is hung, when extension hammer device (4) moves to extension
When hammering the lower part of device movement montant (5) into shape, thimble lower part is contacted with the top plate (51) of lower part, and thimble (44) is jacked up, block at this time
Tongue (41) will tangle drop hammer (6), and drop hammer (6) are promoted under the drive of motor (2), and when dropping hammer, (6) elevated height protrudes structure
(52) height where (i.e. set by experiment during height) hangs hammer release and drops hammer, and declines when hanging hammer device (4) height, and touches down
Portion's top plate (51) is hung hammer device (4) and is tangled again drop hammer (6).The automatic fatigue punching of realization is moved back and forth by hanging hammer device (4)
It hits.When number of shocks reach setting number when device will be automatically stopped this experiment.Meanwhile it if is strained in certain experimentation
Piece (this foil gauge is affixed on the opposite of shock surface, while is connected by circuit with control section) is broken (i.e.：Concrete impacts ground
There is crack), the present apparatus will judge that this experiment terminates, so as to be automatically stopped when time experiment.
The technical solution of this method is as follows：
A kind of concrete fatigue impact test method of the present invention, its step are as follows：
Step 1 wraps up the rubber that a layer thickness is 2cm in the impact end of tup first, can ensure to be not added with tup
Identical impact pressure is kept during rubber；
Concrete sample is placed in concrete sample support carriers (8) by step 2, the alignment of concrete sample center
It drops hammer the center of (6) drop point, while using the screw hole on the side plate (83) and top plate (82) of support carriers (8), with bolt general
Concrete sample is fixed in concrete sample support carriers (8) (each bolt only touches test specimen just)；
Step 3, the device made using us, when our starters, dropping hammer (6) can be by hanging hammer device (4) promotion
To predetermined altitude, at this point, dropping hammer, (6) release hammering on test specimen, is when extension hammer device moves to bottom automatically, automatic to hang up
It hammers into shape (6), and so on, can be achieved with the fatigue impact of concrete；
Step 4 has breeding may due to the end of an experimental stage：1st, number of shocks reaches setting number of shocks；2、
Concrete sample destroys；Still stick foil gauge in the stage of concrete sample, and accessed in control circuit, in test specimen
It does not destroy and is to maintain channel status.When foil gauge circuit breaker or experiment number of shocks reach setting number, we will judge to try
Part terminates；
By above step, we realize the automatic progress in concrete impact experiment, that is, realize the tired of concrete
Labor is impacted；Simultaneously because initiative adds rubber on tup, we will be on the premise of keeping impact pressure constant, increase
Number of shocks before concrete destruction thus can effectively reduce the relative error with batch test specimen number of shocks, be conducive to more
Accurately judge the impact property and its variation characteristic of concrete.
3rd, concrete fatigue percussion mechanism proposed by the present invention and method have the following advantages：
1st, fatigue impact experimental provision proposed by the present invention can realize full automatic fatigue impact, in single experiment process
In the participation of personnel is not required substantially, release human resources are to complete other experiments；
2nd, the impact force that percussion mechanism mentioned in the present invention can drop hammer by adjusting height or the weight adjustment dropped hammer；
3rd, rubber is added due to impacting the impact end point dropped hammer, it, can on the premise of each impact pressure is kept
The process of concrete destruction to be divided into the number of shocks for more refinement steps, that is, adding concrete, can more refine
Analysis, judge the destructive process of concrete.
(4) illustrate
Fig. 1 is device overall diagram.
Fig. 2 is device side view.
Fig. 3 is program chart.
Fig. 4 is block tongue.
Fig. 5 is to hang hammer device matrix.
Fig. 6 is thimble 44.
Fig. 7 is the telecontrol equipment that drops hammer.
Fig. 8 is bottom plate 81.
Fig. 9 is top plate 82.
Figure 10 is side plate 83.
Sequence number, symbol, code name are described as follows in figure：
1st, control section 121, microcontroller 122, infrared obstacle avoidance module 123, keyboard
321st, driving gear 322, driven gear 33, driving chain 4, extension hammer device
41st, block tongue 42, matrix 431, transverse spring 432, be vertically arranged spring
5th, hammer device movement montant 51, top plate 52, bulge-structure are hung
6th, drop hammer the 7, motion structure 81 that drops hammer, bottom plate 82, top plate
83rd, side plate 9, cross bar 10, device fuselage main body
(5) specific embodiment
Concrete fatigue impact test apparatus proposed by the present invention and method are on the basis of existing impact experiment apparatus
On redesigned, by impact experiment apparatus drop hammer with hang hammer device phase separation, set on dropping hammer a certain number of
Card slot, when extension hammer device, which is reduced to certain altitude, touches the device 1 set on montant, the buckle hung on hammer will block automatically
It drops hammer, by drop hammer lifting to certain altitude, at this point, we can set a device n (height on the montant for hanging hammer device traveling
It is adjustable), this device can make extension hammer the release that will drop hammer automatically when device arrives at this height into shape, hang hammer device and have motor drive perpendicular
Reciprocation cycle is realized on bar, reaching automatic fatigue impact with this obtains purpose.
The present invention-kind of concrete fatigue impact test apparatus and method, the specific implementation step of the device and method is such as
Under：
First, the present invention-kind of concrete fatigue impact test apparatus：It is made of following several parts：1st, control section；2nd, it is electric
Machine；3rd, transmission device (containing buckle 331)；4th, hammer device (containing card slot 421) is hung；5th, hammer device movement montant is hung；6th, drop hammer (weight
It is adjustable)；7th, drop hammer motion structure；8th, concrete sample support carriers；9th, cross bar；10th, device fuselage main body
2nd, the relation between above-mentioned each component：
Control section 1 is connected by electric lead with motor 2；Motor 2 is directly connected with transmission device 3, hangs hammer device 4 and then leads to
Cross positioned at the buckle 331 being located on transmission device that the card slot 421 and one for hanging hammer device 4 rear portion slide in card slot 421 with
Transmission device 3 is connected；It hangs hammer device and moves the front that montant 5 is vertically placed on the device, hang hammer movement montant 5 through extension hammer dress
4 are put, while hangs hammer device 4 and can move montant 5 along hammer device is hung and move up and down；Drop hammer 6 has three small column montants by one
The cylindrical-shaped structure of composition is that the motion structure 7 that drops hammer limits the displacement of its in-plane, and the motion structure 7 that drops hammer is by upper and lower two
Root cross bar 9 is rigidly connected with device fuselage main body 10, hangs hammer device movement montant 5 and is located at drop hammer motion structure 7 and device fuselage
Between main body 10；Concrete sample support construction 8 is located at the lower part of device fuselage main body 10, while intermediate position is exactly to fall
The drop point of hammer 6；
Three：The self structure of each component of the experimental rig：
1st, control section：Control section is made of 12 two parts of software 11 and hardware, their mutual relations are：
Software 11 is embedded by microcontroller 121 in hardware components 12, by the electric signal that microcontroller 121 generates to entire hardware components
12 are controlled, meanwhile, the electric signal that the infrared obstacle avoidance module 122 in hardware components 12 generates at work passes through microcontroller
121 adjust, react in software 11, software 11 by the electric signal to generation compared with the silence signal of itself, if
Reach condition, then send the electric signal being stopped；
" software 11 " is self-programming program：Its program chart is briefly described as follows：It is whole after the power supply of device is connected
A control section is started to work, at this time we by hardware components 12 to software section input control parameter, such as hammer number, point
START button is hit, starts the initial hammer number n=0 of machine, at this time software section, concrete base foil gauge circuit is in
On-state, when drop hammer 6 pump by infrared obstacle avoidance module 122 when, infrared obstacle avoidance module 122 can generate telecommunications
Number, microcontroller receives the electric signal from infrared obstacle avoidance module 122, while the foil gauge circuit of concrete base is judged by software
Whether connect："No", which is then tested, to be terminated, "Yes" then n=n+1, then n is judged by software<Initial setting up hammer number："No" is then real
End is tested, "Yes", which is then dropped hammer, to be continued to move back and forth, and experiment continues.Until experiment terminates.；As shown in attached drawing 3；
" hardware components 12 " are by microcontroller 121, infrared obstacle avoidance module 122, control keyboard 123, relay 124
And power supply 125 forms；Their mutual relations are：The experimental rig shares two parts power supply 125, i.e. control section power supply
1251 and operation partial power 1252, the power supply 1251 of control section is only microcontroller 121, infrared obstacle avoidance module 122, control
Keyboard 123 and relay 124 are powered；Infrared obstacle avoidance module 122 drop hammer 6 often pass through one time when generate an electric signal, together
When electric signal is passed back in microcontroller 121, control keyboard 123 is used for setting opening for hammer number and manual control machine
Dynamic, stopping or pause；Relay 124 is when the judgement of software 11 reaches experiment stop condition, and microcontroller 121 sends electric signal,
Control relay 124 powers off, so as to cut off the power supply of operation part；Infrared obstacle avoidance module 122, control keyboard 123 and relay
Device 124 is respectively connected by electric lead (Du Pont's line) with microcontroller 121.
It is somebody's turn to do the structure of " microcontroller 121 "：Select existing model-Atmega128；
It is somebody's turn to do the structure of " infrared obstacle avoidance module 122 "：Select the infrared obstacle avoidance module of telesky；
It is somebody's turn to do the structure of " control keyboard 123 "：Select waveshare4*4keypad key-press modules；
It is somebody's turn to do the structure of " relay 124 "：Select 1 road 5v low level trigger relay modules of existing product Risym；
It is somebody's turn to do the structure of " power supply 125 "：Power supply selects existing product：MS-50-12；
2nd, motor：Motor is decelerating motor 2, can meet the needs of long-time heavy service, gear is added on motor
Group, to meet the needs of different frequency of impacts；The decelerating motor can select existing product：Select Eupolyphoge sinensis motor, model GV-
22-750-25-S-B-G1-LB. is：Vertical decelerating motor, the diameter of axle 22, power 750W, reduction ratio 25:1, the motor it is defeated
Enter rotating speed for 1420rpm；
3rd, transmission device：Transmission device is by 31, two gears 32 (master gear 321 and driven gear 322) of gear-box and one
Driving chain 33 forms (by buckle 331 on driving chain), and one of gear 321 (driving gear 321) passes through gear-box
31 are connected with decelerating motor 2, which is driving wheel；Second gear 322 (i.e. driven gear) passes through chain 33 and master simultaneously
Moving gear 321 is connected.
The structure of gear-box 31：The gear-box is T-shaped steering box, and speed of slowing down is than being 1:1,
The structure of two gears 32：The specification of two gears is the gear of 5 point of 15 tooth, facewidth 5mm；
The structure of the driving chain 33：Driving chain be general industry driving chain, specification be 5 points (10A), a length of 2 meters；
The a certain section coupling part of driving chain adds buckle 331；
4th, hammer device is hung：The movement for hanging hammer device 4 is driven by the movement of transmission device 3；Hammer device 4 is hung by block tongue 41, base
42, three springs 43 of body (two lateral springs 431 and a perpendicular spring 432) and (rear referred to as " top of thimble 44 with top disc
Pin ") composition；When hanging hammer device 3 and moving to the bottom for hanging hammer device movement montant 5, thimble 44 contacts bottom, is jacked up, and blocks
The spring 431 that tongue 41 is distributed in both sides is held to away from the direction of the device and is moved, and 6 are dropped hammer so as to tangle；Device 4 is hammered into shape when hanging
When moving to specified altitude assignment, block tongue 41 is pushed up to negative direction by the projective structure 52 hung on hammer device movement montant 5 and moved, thimble 44
It is withstood and moves downward by the spring 432 of its underpart, so as to fix block tongue 41 in released position with the disk on thimble 44.At this point,
It completes one and hangs hammer Xun Huan.There is a transverse direction in 42 part of matrix for hanging hammer device 4 towards 10 1 middle side part of device fuselage main body
The card slot 421 of arrangement, by card slot 421 by one can on card slot 421 buckle 331 of transverse shifting and transmission device 3 biography
Dynamic chain 33 is connected, so as to which extension hammer device 3 be driven to move；
It is somebody's turn to do the shape and structure of " block tongue 41 "：Its shape and structure is：The shape of block tongue is approximate wedge structure, the length of inclined portion
It spends for 15mm, is a length of 70mm after inclined portion, width 60mm, thickness is the hexahedron of 10mm, in block tongue 41 close to device fuselage master
There are one along the protrusion that the elongated interface dimensions in side are 5*5mm in a line of body 10, it is provided with apart from the position of this edge 25mm
One groove for leading to wide 60*5*5mm along block tongue 41；The steel cylinder that an a diameter of 4mm length is 100 is placed in groove to see
Bright book attached drawing (4)；
It is somebody's turn to do the shape and structure of " matrix 42 "：Its shape and structure is：Matrix 42 is hexahedron structure, except facing device fuselage master
Outside 10 one side of body is not closed, the steel plate that remaining five face is 10mm with thickness surrounds, the two side steel plates adjacent with not sealing surface
Size is 60*90 (height) mm, and the plate size of sealing surface offside is not 80*90 (height) mm；The plate size at the top of matrix 42 is
100*100mm, the size of the steel plate of 42 bottom of matrix is 60*80mm, in the centre of the 42 top steel plate of matrix and bottom steel plate
Each hole there are one 25*25mm is opened, while opens in the big one side of the hole approaching device fuselage main body 10 that there are one 10*10mm's again
Aperture is connected with macropore, forms the hole of " convex " shape, apart from the place of aperture 5mm, the close device fuselage main body 10 1
The circular hole there are one a diameter of 7mm is opened in side, with to pass through thimble 44.In unclosed one side, there are one T-steel plate (T-steel plates for weldering
The edge of a wing be welded on 42 unclosed face of matrix), size be the wide 30mm in the edge of a wing, thick 5mm, long 100mm；Web high 25mm, thick 5mm,
Long 100mm.The T-steel plate and the steel plate at 42 top of matrix form the card slot 421 that a width is 15mm.The steel at 42 top of matrix
There are two the small part of similar door type structure, the size of interstitial hole is 10 (height) * 12 (width) mm for the two sides weldering of plate；At top
Respectively weldering is there are one stepped cylindrical at two angles of the steel plate away from device fuselage main body 10, and bottom plate body diameter 8mm, high 7mm, top is justified
Pillar height 5mm, diameter 5mm.See Figure of description (5)；
It is somebody's turn to do the shape and structure of " spring 43 "：Lateral spring 431 compresses spring for stainless steel, keeps flat natural length as 5cm, compression spring
Line footpath 1mm, spring inside diameter 5mm；Perpendicular spring 432 compresses spring for stainless steel, keeps flat natural length as 10cm, compression spring line footpath
2mm, spring inside diameter 10mm；
It is somebody's turn to do the shape and structure of " thimble 44 "：Its shape and structure is：Thimble 44 is the acicular texture of overall length 143mm, and top is justified
Disk a diameter of 15mm, thickness 3mm；Disk lower part be diameter 6mm, the cylinder of long 140mm；See Figure of description (6)；
5th, hammer device movement montant is hung：The prism bar for being 3cm*3cm for an interface dimensions, top plate 51 that there are one bottoms,
There are one the adjustable bulge-structures 52 of vertical position on top；
6th, drop hammer (weight-adjustable)：Dropping hammer 6, (hammering bottom surface more than 10cm is emptied, outer wall thickness for hollow cylindrical tube
5mm), the side for hammering more than bottom surface 10cm is distributed with screw thread, and extension hammer device 4 is facilitated to hang up；Have simultaneously among inner bottom surface
One depth 3cm, the screw hole of a diameter of 14mm, facilitate install additional screw rod so as to change drop hammer 6 weight；
7th, drop hammer motion structure：The motion structure 7 that drops hammer is made of the annulus 72 of three 71 bars of thin cylindrical bar and upper bottom surface,
Three thin cylindrical bar 71 is evenly distributed on annulus, drop hammer 6 movement when by upper and lower annulus 72；See Figure of description (7)
It is somebody's turn to do the shape and structure of " cylindrical bar 71 "：Cylindrical bar 71 is the solid of the long 700mm that cross sectional dimensions is 25mm*25mm
Steel shank；
It is somebody's turn to do the shape and structure of " annulus 72 "：It is somebody's turn to do the shape and structure of " annulus 72 "：The face shaping of annulus 72 is curl rectangle,
Thickness is 10mm, a length of 85mm of straight flange, and curl is the semicircle of a diameter of 85mm, and a diameter of 55mm's opened in position in its center
Circular hole；
8th, concrete sample support carriers：Concrete sample support carriers 8 are by 81, two top plates 82 of bottom plate and four sides
Plate 83 forms, and top plate 82 and 83 top of side plate are provided with threaded hole.Side plate 83 and top plate 82 are connected by welding and 81 rigidity of bottom plate
It connects.
It is somebody's turn to do the shape and structure of " bottom plate 81 "：Should the shape and structure of " bottom plate 81 " be：81 main part of bottom plate is a 450*
The rectangular steel plates of 150*15mm, in elongatedness direction, away from have at short side 50mm an arc groove (away from short side 50mm, away from its surface
At 10mm height, the circular milling using radius as 15mm goes out the circular arc)；Simultaneously along its length, in its short side center, respectively choose
One long 80mm, sectional dimension are the short beam of 10*15mm；See Figure of description (8)；
It is somebody's turn to do the shape and structure of " top plate 82 "：Should the shape and structure of " top plate 82 " be：Two isosceles are added by a rectangular body
Right angled triangle gripper shoe groups are into rectangular body is in its center away from the screw hole there are one M10 at the 30mm of top, in its bottom centre
Place, has opened the slot of one 10 (width) * 15 (height) mm；The right angle length of side 70mm of two isosceles right triangle support plates, with electric welding
Mode one right-angle side is welded on to the both sides of fluting.See Figure of description (9)；
It is somebody's turn to do the shape and structure of " side plate 83 "：Should the shape and structure of " side plate 83 " be：Main body is a high 180mm, wide
100mm, the rectangular steel plates of thick 10mm, away from the screw hole for being provided with M10 at the top of it at 15mm centers；See Figure of description (10)；
9th, cross bar：The structure of cross bar 9：Cross bar 9 is that a size is long 250mm, and the steel rectangle of wide 85mm, thick 10mm are short
Bar；
10th, the structure of device fuselage main body 10：Device fuselage main body 10 is a high 1500mm, long 500mm, width 300mm
Rectangular box shape object, the steel sheet that external military thickness is 2mm closes；In the sky of 10 top 200mm of device fuselage main body
Interior placement control section 1；Motor 2 and power supply 125 are placed in the position of 200-1100mm from top to bottom；The position of lower part 200mm
Put for connect concrete sample support carriers 8 (8 rigid connection of concrete sample support carriers in the outside of device fuselage main body 10,
A L-type structure is ultimately formed with device fuselage main body 10；See attached drawing (2)).
A kind of concrete fatigue impact test method of the present invention, its step are as follows：
Step 1 wraps up the rubber that a layer thickness is 2cm in the impact end of tup first, can ensure to be not added with tup
Identical impact pressure is kept during rubber；
Concrete sample is placed in concrete sample support carriers 8 by step 2, and the alignment of concrete sample center falls
The center of 6 drop points is hammered into shape, while using the screw hole on the side plate 83 and top plate 82 of support carriers 8, with bolt by concrete sample
It is fixed in concrete sample support carriers 8 (each bolt only touches test specimen just)；
Step 3, the device made using us, when our starters, 6 meetings of dropping hammer be promoted pre- by extension hammer device 4
Fixed height, at this point, drop hammer 6 automatic release hammerings on test specimen, when hanging hammer device and moving to bottom, automatic hang up drops hammer 6, such as
This is reciprocal, can be achieved with the fatigue impact of concrete；
Step 4 has breeding may due to the end of an experimental stage：1st, number of shocks reaches setting number of shocks；2、
Concrete sample destroys；Still stick foil gauge in the stage of concrete sample, and accessed in control circuit, in test specimen
It does not destroy and is to maintain channel status.When foil gauge circuit breaker or experiment number of shocks reach setting number, we will judge to try
Part terminates.
By above step, we realize the automatic progress in concrete impact experiment, that is, realize the tired of concrete
Labor is impacted；Simultaneously because initiative adds rubber on tup, we will be on the premise of keeping impact pressure constant, increase
Number of shocks before concrete destruction thus can effectively reduce the relative error with batch test specimen number of shocks, be conducive to more
Accurately judge the impact property and its variation characteristic of concrete.
In conclusion the concrete fatigue impact test method is：
The rubber that a layer thickness is 2cm is wrapped up in the impact end of tup first, can ensure and drop hammer 6 when being not added with rubber
Keep identical impact stress.In order to ensure that Rubber end is unlikely to drop in bump, tup is entirely wrapped in by we
In rubber, while bonded using the glue of high intensity.
Concrete sample is placed on bearing 8, test specimen center is directed at the center for 6 drop points that drop hammer, and shock surface should select
Select one in two longer side faces in the face of pouring, at the same using bearing side plate 83 and top plate 82 by test specimen with similar freely-supported
Mode be fixed on bearing 8；Due to having screw hole on top plate 82 and side plate 83, still apply certain pressure using bolt
Power, to achieve the effect that test specimen freely-supported being placed in concrete sample support carriers 8.
Using we make device, when our starters, if drop hammer 6 not by hang hammer device 4 tangle, hang
It is first round-trip along 5 dry run of hammer device movement montant one is hung to hammer the meeting of device 4 into shape, is erected when extension hammer device 4 reaches extension hammer device movement
During the bottom of bar 5, since thimble 44 is jacked up by top plate 51, block tongue 41 drops hammer 6 at this time since the effect of spring 431 is popped up forward
It is hung up, 6 meetings of then dropping hammer promote predetermined altitude by hanging hammer device 4, at this point, moving protrusion on montant 5 due to hanging hammer device
The effect of structure 52, block tongue 41 is pushed to be moved backward, and drop hammer 6 separates with hanging hammer device 4, and 6 automatic release hammerings of dropping hammer are trying
One-shot is completed on part, when hanging hammer device 4 and being re-moved to bottom, automatic hang up drops hammer 6, and so on, can be achieved with
The fatigue impact of concrete
Due to an experimental stage end there are two types of may：1st, number of shocks reaches setting number of shocks；2nd, concrete
Test specimen destroys；Still stick foil gauge in the stage of concrete sample, and accessed in control circuit, do not destroyed in test specimen
It is to maintain channel status.When foil gauge circuit breaker or experiment number of shocks reach setting number, we will judge test specimen knot
Beam.
Claims (10)
1. a kind of concrete fatigue impact test apparatus, it is characterised in that：It is to consist of the following components：Control section, electricity
Machine, transmission device hang hammer device, hang hammer device movement montant, drop hammer, the motion structure that drops hammer, concrete sample support carriers, horizontal stroke
Bar and device fuselage main body；
Relation between above-mentioned each component：
Control section (1) is connected by electric lead with motor (2)；Motor (2) is directly connected with transmission device (3), hangs hammer device
(4) then it is located at transmission device by what the card slot (421) and one that are located at extension hammer device (4) rear portion slided in card slot (421)
On buckle (331) be connected with transmission device (3)；The front that hammer device movement montant (5) is vertically placed on the device is hung, hangs hammer
Movement montant (5), which passes through, hangs hammer device (4), while hangs hammer device (4) edge extension hammer device and move montant (5) up and down motion；It drops hammer
(6) cylindrical-shaped structure being made of by one the three small column montants motion structure (7) that drops hammer limits the position of its in-plane
It moves, which is rigidly connected by upper and lower two cross bars (9) and device fuselage main body (10), hangs hammer device fortune
Dynamic montant (5), which is located at, to drop hammer between motion structure (7) and device fuselage main body (10)；Concrete sample support construction (8) is located at
The lower part of device fuselage main body (10), while intermediate position is exactly the drop point of (6) of dropping hammer；
Control section is made of (12) two parts of software (11) and hardware；Software (11) is embedded into firmly by microcontroller (121)
In part part (12), the electric signal generated by microcontroller (121) controls entire hardware components (12), meanwhile, hardware
The electric signal that partly the infrared obstacle avoidance module (122) in (12) generates at work is adjusted by microcontroller (121), reacted
In software (11), software (11) by the electric signal to generation compared with the silence signal of itself, if reaching condition,
Send the electric signal being stopped；
The software (11) is self-programming program：Its program chart is described as follows：After the power supply of device is connected, entire control unit
Point start to work, be hammer number at this time by hardware components (12) to software section input control parameter, click start by
Button, start machine, at this time software section initial hammer number n=0, concrete base foil gauge circuit in an ON state,
When drop hammer (6) pump by infrared obstacle avoidance module (122) when, infrared obstacle avoidance module (122) can generate electric signal,
Microcontroller receives the electric signal from infrared obstacle avoidance module (122), while the foil gauge circuit of concrete base is judged by software
Whether connect：No, then experiment terminates, and is, then n=n+1, then n is judged by software<Initial setting up hammer number：It is no, then it tests
Terminate, be then to drop hammer and continue to move back and forth, experiment continues, until experiment terminates；
The hardware components (12) are by microcontroller (121), infrared obstacle avoidance module (122), control keyboard (123), relay
(124) and power supply (125) forms；The experimental rig shares two parts power supply (125), i.e. control section power supply (1251) and fortune
Row partial power (1252), the power supply (1251) of control section are only microcontroller (121), infrared obstacle avoidance module (122), control key
Disk (123) and relay (124) power supply；Infrared obstacle avoidance module (122) drop hammer (6) often pass through one time when generate a telecommunications
Number, while electric signal is passed back in microcontroller (121), control keyboard (123) is used for setting hammer number and manual control
Startup, stopping and the pause of machine；Relay (124) is the microcontroller when software (11) judgement reaches experiment stop condition
(121) electric signal is sent, control relay (124) powers off, so as to cut off the power supply of operation part；Infrared obstacle avoidance module (122),
Control keyboard (123) and relay (124) are respectively connected by electric lead, that is, Du Pont's line and microcontroller (121)；
Motor is decelerating motor (2), can meet the needs of long-time heavy service, gear set is added on motor, to meet not
With the demand of frequency of impact；
Transmission device is by gear-box (31), two gears (32) i.e. master gear (321) and driven gear (322) and a driving-chain
Item (33), thereon containing buckle (331) composition；One of gear, that is, driving gear (321) is by gear-box (31) with slowing down
Motor (2) is connected, which is driving wheel；Second gear, that is, driven gear (322) passes through chain (33) and driving tooth simultaneously
Wheel (321) is connected；
The structure of gear-box (31)：The gear-box is T-shaped steering box, and speed of slowing down is than being 1:1；
The structure of two gears (32)：The specification of two gears is the gear of 5 point of 15 tooth, facewidth 5mm；
The structure of the driving chain (33)：Driving chain is industrial driving chain, and specification is 5 points, 10A, a length of 2 meters；Driving-chain
One coupling part of item adds buckle (331)；
The movement for hanging hammer device (4) is driven by the movement of transmission device (3)；Hang hammer device (4) by block tongue (41), matrix (42),
Three springs (43) i.e., two lateral springs (431) and a perpendicular spring (432) and thimble (44) composition with top disc；Work as extension
When hammer device (3) moves to the bottom for hanging hammer device movement montant (5), thimble (44) contact bottom is jacked up, block tongue (41) quilt
The spring (431) for being distributed in both sides is held to away from the direction of the device and is moved, so as to tangle drop hammer (6)；Device (4) is hammered into shape when hanging
When moving to specified altitude assignment, block tongue (41) is pushed up to negative direction by the projective structure (52) hung on hammer device movement montant (5) and moved,
Thimble (44) is withstood by the spring (432) of its underpart and moves downward, so as to the disk on thimble (44) fix block tongue (41) in
Released position；At this point, completing one hangs hammer Xun Huan；The matrix (42) of hammer device (4) is hung partly towards the device fuselage main body
(10) one middle side parts have the card slot (421) of a lateral arrangement, can be on card slot (421) laterally by one by card slot (421)
The driving chain (33) of mobile buckle (331) and transmission device (3) is connected, and hammer device (3) movement is hung so as to drive；
The shape of the block tongue (41) is wedge structure；
The matrix (42) is hexahedron structure, and in addition to not closed towards device fuselage main body (10) one side, remaining five face is equal
It is surrounded with steel plate；
The spring (43) includes lateral spring (431) and perpendicular spring (432), all compresses spring for stainless steel；
The thimble (44) is acicular texture；
The prism bar that extension hammer device movement montant (5) is 3cm*3cm for an interface dimensions, top plate (51) that there are one bottoms,
There are one the adjustable bulge-structures of vertical position (52) on top；
Weight-adjustable drops hammer (6) as a hollow cylindrical tube, and the side of hammering more than bottom surface 10cm is distributed with screw thread, convenient
Hammer device (4) is hung to hang up；There is a screw hole among inner bottom surface simultaneously, facilitate and install screw rod additional so as to change the weight of (6) of dropping hammer；
The motion structure that drops hammer (7) is made of the annulus (72) of three thin cylindrical bar (71) bars and upper bottom surface, three thin cylinders
Bar (71) is evenly distributed on annulus, drop hammer (6) movement when by upper and lower annulus (72)；
The cylindrical bar (71) is solid steel cylindrical bar；
The face shaping of the annulus (72) is curl rectangle；
The concrete sample support carriers (8) are made of bottom plate (81), two top plates (82) and four side plates (83), top plate
(82) and side plate (83) top is provided with threaded hole；Side plate (83) and top plate (82) are rigidly connected by welding and bottom plate (81)；
The shape and structure of the bottom plate (81) is：Bottom plate (81) main part is a rectangular steel plates, in elongatedness direction, away from short side
There is an arc groove at place；Simultaneously along its length, in its short side center, respectively choose a short beam；
The shape and structure of the top plate (82) is：Two isosceles right triangle gripper shoe groups are added into rectangle by a rectangular body
Main body at top in its center away from there are one screw hole, at its bottom centre, having opened a slot；Two isosceles right triangle branch
One right-angle side is welded on the both sides of fluting by the right angle length of side 70mm of fagging in a manner of electric welding；
Side plate (83) shape and structure is：Main body is a rectangular steel plates, and screw hole is provided at away from its top center；
Cross bar (9) is a steel rectangle quarter butt；
The device fuselage main body (10) be a rectangular box shape object, outside closed with steel sheet；In device fuselage main body
(10) control section (1) is placed in the space of top 200mm；From top to bottom 200-1100mm position place motor (2) and
Power supply (125)；The position of lower part 200mm is used for connecting concrete sample support carriers (8)；Concrete sample support carriers (8)
Rigid connection ultimately forms a L-type structure in the outside of the device fuselage main body (10) with device fuselage main body (10).
2. a kind of concrete fatigue impact test apparatus according to claim 1, it is characterised in that：The wedge of the block tongue (41)
Shape structure：The length of its inclined portion is 15mm, is a length of 70mm after inclined portion, width 60mm, thickness is the hexahedron of 10mm, in block tongue
(41) close to the device fuselage main body (10) a line on there are one along the elongated interface dimensions in side be 5*5mm protrusion, away from
Position from this edge 25mm is provided with a groove along the logical wide 60*5*5mm of block tongue (41)；Diameter there are one being put in the groove
The steel cylinder for being 100 for 4mm length.
3. a kind of concrete fatigue impact test apparatus according to claim 1, it is characterised in that：The hexahedron structure
In addition to not closed towards device fuselage main body (10) one side, the steel plate that remaining five face is 10mm with thickness encloses matrix (42)
Into；The two side plate sizes adjacent with not sealing surface are 60*90 high mm, and the plate size of sealing surface offside is not 80*90 high
mm；Plate size is 100*100mm at the top of matrix (42), and the size of matrix (42) bottom steel plate is 60*80mm, in the matrix
(42) top steel plate and the centre of bottom steel plate opens each hole there are one 25*25mm, while in the hole close to the device fuselage
The aperture that the big one side of main body (10) opens again there are one 10*10mm to be connected with macropore, the hole of one convex of composition；Apart from aperture
The circular hole there are one a diameter of 7mm is opened, with to pass through thimble in the place of 5mm close to the one side of the device fuselage main body (10)
(44)；In unclosed one side, weld there are one T steel plate, the edge of a wing of T-steel plate is welded on matrix (42) unclosed face, and size is
Wing plate wide 30mm, thick 5mm, long 100mm；Web high 25mm, thick 5mm, long 100mm；The T steel plate and the steel at the top of matrix (42)
Plate forms the card slot (421) that width is 15mm, and there are two door type structures for the two sides weldering of the steel plate at the top of matrix (42)
Small part, the size of interstitial hole is high 10mm* wide 12mm；It is each at two angles of the steel plate away from device fuselage main body (10) at top
There are one stepped cylindrical, bottom plate body diameter 8mm, high 7mm, Upper cylindrical high 5mm, diameter 5mm for weldering.
4. a kind of concrete fatigue impact test apparatus according to claim 1, it is characterised in that：In the spring (43)
Lateral spring (431) keeps flat natural length as 5cm, compression spring line footpath 1mm, spring inside diameter 5mm；Perpendicular bullet in the spring (43)
Spring (432) keeps flat natural length as 10cm, compression spring line footpath 2mm, spring inside diameter 10mm.
5. a kind of concrete fatigue impact test apparatus according to claim 1, it is characterised in that：The top of the acicular texture
Pin (44), overall length 143mm；Top disc a diameter of 15mm, thickness 3mm；Disk lower part is diameter 6mm, long 140mm
Cylinder.
6. a kind of concrete fatigue impact test apparatus according to claim 1, it is characterised in that：The motion structure that drops hammer
(7) three cylindrical bars (71) in, cross sectional dimensions are the long 700mm of 25mm*25mm；In the motion structure that drops hammer (7)
Face shaping is the annulus (72) of curl rectangle, and thickness 10mm, a length of 85mm of straight flange, curl is the half of a diameter of 85mm
Circle, the circular hole of an a diameter of 55mm is opened at position in its center.
7. a kind of concrete fatigue impact test apparatus according to claim 1, it is characterised in that：The concrete sample
The bottom plate (81) in support carriers (8), main part is the rectangular steel plates of a 450*150*15mm, in elongatedness side
To away from having an arc groove at short side 50mm；Simultaneously along its length, in its short side center, respectively choose a long 80mm, cut
Face size is the short beam of 10*15mm；
The top plate 82 in the concrete sample support carriers 8 is to add two isosceles right triangles by a rectangular body
Gripper shoe groups are into rectangular body away from the screw hole there are one M10 at the 30mm of top, at its bottom centre, has opened one in its center
A wide 10mm, the slot of high 15mm；The right angle length of side 70mm of two isosceles right triangle support plates, by one in a manner of electric welding
Right-angle side is welded on the both sides of fluting；
The side plate (83) in the concrete sample support carriers (8), main body are a high 180mm, width 100mm, thickness
The rectangular steel plates of 10mm, away from the screw hole for being provided with M10 at the top of it at 15mm centers.
8. a kind of concrete fatigue impact test apparatus according to claim 1, it is characterised in that：The steel rectangle is short
The cross bar (9) of bar, size is long 250mm, width 85mm, thickness 10mm.
9. a kind of concrete fatigue impact test apparatus according to claim 1, it is characterised in that：The rectangular box shape object
The device fuselage main body (10), a height of 1500mm, a length of 500mm, width 300mm, outside be 2mm with thickness steel
Thin plate is closed.
10. a kind of a kind of test method of concrete fatigue impact test apparatus according to claim 1, feature exist
In：Its step are as follows：
Step 1 wraps up the rubber that a layer thickness is 2cm in the impact end of tup first, can ensure to be not added with rubber with tup
When keep identical impact pressure；
Concrete sample is placed in concrete sample support carriers (8) by step 2, and the alignment of concrete sample center is dropped hammer
(6) center of drop point, while using the screw hole on the side plate (83) and top plate (82) of support carriers (8), with bolt by coagulation
Native test specimen is fixed in concrete sample support carriers (8)；
When step 3, starter, drop hammer (6) can by hang hammer device (4) promoted to predetermined altitude, at this point, drop hammer (6) release automatically
Hammering is put on test specimen, is that automatic hang up is dropped hammer (6), and so on, can be achieved with mixing when hanging hammer device (4) to move to bottom
Coagulate the fatigue impact of soil；
Step 4, due to an experimental stage end there are two types of may：The first：Number of shocks reaches setting number of shocks；The
Two kinds：Concrete sample destroys；Therefore the stage in concrete sample sticks foil gauge, and accessed in control circuit, it is trying
Part does not destroy and is to maintain channel status；It will all judge test specimen when foil gauge circuit breaker and experiment number of shocks reach setting number
Terminate；
By above step, the automatic progress in concrete impact experiment is realized, that is, realizes the fatigue impact of concrete；Together
When rubber added on tup due to initiative, concrete destruction will be increased on the premise of keeping impact pressure constant
Preceding number of shocks thus can effectively reduce the relative error with batch test specimen number of shocks, be conducive to more accurately judge to mix
Coagulate the impact property and its variation characteristic of soil.
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| CN201711235189.2A CN108051322B (en) | 2017-11-30 | 2017-11-30 | Concrete fatigue impact test device and test method thereof |
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| CN201711235189.2A CN108051322B (en) | 2017-11-30 | 2017-11-30 | Concrete fatigue impact test device and test method thereof |
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| CN108051322B CN108051322B (en) | 2019-12-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459657A (en) * | 2022-04-14 | 2022-05-10 | 西南交通大学 | Impact load automatic identification method, electronic equipment and storage medium |
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| CN101825540A (en) * | 2010-04-29 | 2010-09-08 | 浙江工业大学 | Concrete automatic impact tester and test method thereof |
| CN203069466U (en) * | 2013-01-29 | 2013-07-17 | 中建商品混凝土有限公司 | Device for testing impact resistance of cement-based binding material and concrete |
| CN104897492A (en) * | 2015-07-01 | 2015-09-09 | 安徽理工大学 | Test device for testing concrete drop hammer impact performance |
| CN105699222A (en) * | 2016-02-21 | 2016-06-22 | 青海省交通科学研究院 | Test apparatus for simulating dynamic response of cement concrete road surfaces under effects of impact load |
| CN205562311U (en) * | 2016-02-21 | 2016-09-07 | 青海省交通科学研究院 | Impact load effect is cement concrete pavement dynamic response analogue test device down |
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2017
- 2017-11-30 CN CN201711235189.2A patent/CN108051322B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825540A (en) * | 2010-04-29 | 2010-09-08 | 浙江工业大学 | Concrete automatic impact tester and test method thereof |
| CN203069466U (en) * | 2013-01-29 | 2013-07-17 | 中建商品混凝土有限公司 | Device for testing impact resistance of cement-based binding material and concrete |
| CN104897492A (en) * | 2015-07-01 | 2015-09-09 | 安徽理工大学 | Test device for testing concrete drop hammer impact performance |
| CN105699222A (en) * | 2016-02-21 | 2016-06-22 | 青海省交通科学研究院 | Test apparatus for simulating dynamic response of cement concrete road surfaces under effects of impact load |
| CN205562311U (en) * | 2016-02-21 | 2016-09-07 | 青海省交通科学研究院 | Impact load effect is cement concrete pavement dynamic response analogue test device down |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459657A (en) * | 2022-04-14 | 2022-05-10 | 西南交通大学 | Impact load automatic identification method, electronic equipment and storage medium |
| CN114459657B (en) * | 2022-04-14 | 2022-07-01 | 西南交通大学 | Impact load automatic identification method, electronic device and storage medium |
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| CN108051322B (en) | 2019-12-31 |
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