CN109374446A - A kind of impact test apparatus - Google Patents
A kind of impact test apparatus Download PDFInfo
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- CN109374446A CN109374446A CN201811149822.0A CN201811149822A CN109374446A CN 109374446 A CN109374446 A CN 109374446A CN 201811149822 A CN201811149822 A CN 201811149822A CN 109374446 A CN109374446 A CN 109374446A
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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
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
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Abstract
The invention discloses a kind of impact test apparatus, and including the protection limiting device being arranged in outside test specimen, protecting limiting device includes shielded frame and limiting device, wherein shielded frame is welded by steel pole, and limiting device is fixed in shielded frame；Limiting device includes the first memory metal being fixedly connected sequentially; second memory metal; third memory metal and the 4th memory metal; the junction of first to fourth memory metal is provided with electromagnet; protective device can protection test personnel safety; the position dropped hammer after falling of dropping hammer can be effectively controlled in limiting device; it avoids dropping hammer and secondary or repeat impact is carried out to test specimen; improve the accuracy of test; furthermore the unique function that memory metal resets, can reduce damage of the drop impact power for protective device; the uncertainty in test is reduced, test accuracy is improved.
Description
Technical field
The invention belongs to impact test technical fields, and in particular to a kind of impact test apparatus.
Background technique
When traditional drop hammer impact testing machine is done experiment, it is usually to drop hammer to discharge from a certain test height, drops hammer and freely fall
Body.It when these drop hammer impact testing machines are in falling weight impact test, drops hammer after falling strike test specimen, dropping hammer sometimes, it is certain to generate
Two-hit is formed after the rebound of height and even hits test specimen three times, is not so very accurately, with land to the result of impact
The required precision of hammering blow test is continuously improved, and the influence of repeat impact cannot increasingly be ignored.For most of drop impacts
Testing machine drops hammer after falling due to lacking the limiting device that drops hammer, being easy to bring danger and bringing uncertainty to result.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of impact test apparatus, by the way that the anti-falling stop of protective device is arranged
Hammer repeatedly hits test specimen, improves the accuracy of test.
In order to achieve the above objectives, a kind of impact test apparatus includes the protection limiting device being arranged in outside test specimen, protection limit
Position device includes shielded frame and limiting device, wherein shielded frame is welded by steel pole, and limit is fixed in shielded frame
Device；Limiting device includes the first memory metal being fixedly connected sequentially, the second memory metal, third memory metal and the 4th note
Recall metal, the junction of first to fourth memory metal is provided with electromagnet.
Further, silicon rubber pipeline heating tape is wound with outside first to fourth memory metal.
Further, shielded frame lower part two sides are respectively and fixedly provided with two cross one another steel poles.
Further, electromagnet is circular magnetic chuck electromagnet.
Further, further include pressurizing device and dropping hammer for applying impact force to test specimen, pressurizing device includes fixing
The first baffle and second baffle of connection, first baffle inside are fixedly connected with the pedestal of jack, jack top and first
Flexural pivot one end is fixedly connected, and the first force snesor is provided on the inside of second baffle, and the first force snesor and second flexural pivot one end are solid
The other end of fixed connection, the first flexural pivot and the second flexural pivot with test specimen for being fixedly connected.
It further, further include lifting device, lifting device includes fixed beam, moves beam, hoist engine and two root posts,
Two root posts top is fixed with fixed beam, is evenly arranged with several bolts hole along the vertical direction on column, and it is logical to move beam both ends
It crosses screw rod and bolt hole is fixed on column, fixed beam one end and middle part are respectively fixed with first axle wheel and the second axis wheel, elevator
The steel strand wires of machine are successively wound on first axle wheel and the second axis wheel, and the free end of steel strand wires is fixedly connected with removable beam.
It further, further include fixture control system, fixture control system includes hook and snib, and hook includes the first arc
Shape hook and the second arc hook, the first arc hook are S-shaped, and the first arc hook top is provided with the first groove；Second arc
Shape hook is fixed on mobile girder steel, and the second arc hook middle part offers the second groove, and the second groove and the first groove pass through
Snib connection, the first arc hook and the second arc hook middle part are hinged by pin, drop hammer and hang over the first arc hook and the
Two arcs link up with the junction of lower part, and when snib is located in the first and second grooves, the first arc hook and the second arc are hung
Hook lock is fixed, and without relative displacement, and the first arc hook and the second arc hook lower end are closed；When extracting snib, the first arc
Shape hook and the second arc hook lower end separate.
Further, snib drawstring one end is fixedly connected with snib, and the snib drawstring other end is fixedly connected with drawstring handle,
Drawstring handle is arranged on column.
Further, the cross section of the second arc hook is U-lag, and the first arc hook is located at the U of the second arc hook
In shape slot.
Further, further include pedestal for fixing test specimen, pedestal includes channel steel steel plate, cylindrical body pedestal and the second power
Sensor, there are two cylindrical body pedestals for setting on channel steel steel plate, are provided with one between two cylindrical body pedestals and channel steel steel plate
A second mechanics sensor, cylindrical body pedestal upper end are fixed with the first fixture, the upper surface of the first fixture and the shape phase of test specimen
Adaptation, the first fixture are bolted with the second fixture both ends.
Compared with prior art, the present invention at least has technical effect beneficial below, and protective device can protection test people
The position dropped hammer after falling of dropping hammer can be effectively controlled in the safety of member, limiting device, and avoiding dropping hammer, it is secondary or more to carry out to test specimen
Secondary Shocks improve the accuracy of test, furthermore, the unique function that memory metal resets can reduce drop impact power for protection
The damage of device reduces the uncertainty in test, improves test accuracy.
Further, silicon rubber pipeline heating tape is wound with outside first to fourth memory metal, it is convenient to first to fourth
Memory metal heating, makes it restore to initial configuration.
Further, increase axial pressurizing device, by carrying out application impact load under axial, can survey simultaneously
The time-history curves and end reaction time-history curves of the impact force to drop hammer in the case where axial pressure are obtained, and then component is divided
Analysis, improves the accuracy of test data, more meets Practical Project overview.
Further, it since the position of the removable beam in the present apparatus can adjust as needed, therefore is applicable to most of
Prototype structure component avoids the scaling of component, so that test result is more accurate.
Further, by the cooperation of two hooks and snib, the decentralization work dropped hammer can be easily accomplished.
Further, the cross section of the second arc hook is U-lag, and the first arc hook is located at the U of the second arc hook
In shape slot, the second arc hook can limit the position of the first arc hook in the horizontal direction, improve the stability of device.
Further, pedestal includes channel steel steel plate, cylindrical body pedestal and the second force snesor, is provided with two on channel steel steel plate
A cylindrical body pedestal is provided with second mechanics sensor, cylindrical body bottom between two cylindrical body pedestals and channel steel steel plate
Seat upper end is fixed with the first fixture, and the upper surface of the first fixture and the shape of test specimen are adapted, the first fixture and the second fixture two
End is bolted, and cylindrical body pedestal can be mobile according to the size of test specimen in channel steel steel plate, facilitates adjusting.
Further, first baffle and second baffle are bolted to connection, easy to disassemble, and according to the size of test specimen
Select the bolt of different length.
Detailed description of the invention
Fig. 1 is the overall structure diagram of embodiment 1；
Fig. 2 is the structural schematic diagram of hook；
Fig. 3 is the first arc hook schematic diagram；
Fig. 4 is the second arc hook schematic diagram；
Fig. 5 is snib schematic diagram；
Fig. 6 is the structural schematic diagram of pedestal entirety；
Fig. 7 is the structural schematic diagram of cylindrical body pedestal 22；
Fig. 8 is the top view of channel steel steel plate 2；
Fig. 9 is 6 top view of the first semicircle pedestal 5 and the second semicircle pedestal；
Figure 10 is 2 overall structure diagram of embodiment；
Figure 11 is the protection limiting device schematic diagram of embodiment 2；
Figure 12 is 2 limiting device schematic diagram of embodiment.
Wherein: 1- test specimen, 2- channel steel steel plate, 3- jack, the first force snesor of 4-, 5- the first semicircle pedestal, 6- second
Semicircle pedestal, the first flexural pivot of 71-, the second flexural pivot of 72-, 81- first baffle, 82- second baffle, 91- first axle wheel, 92- second
Axis wheel, 10- move beam, 11- column, 12- screw rod, the first arc of 13- hook, the second arc of 14- hook, and 15- drops hammer, 16-
Fixed beam, 17- snib drawstring, 18- hoist engine, 19- drawstring handle, the second force snesor of 20-, 21- upper cover, 22- cylindrical body bottom
Seat, 23- snib, 24- steel strand wires, 25- bolt hole, 26- pin, the first fixture of 27-, 28- protection limiting device, 30- steel pole,
The first memory metal of 31-, the second memory metal of 32-, 33- third memory metal, the 4th memory metal of 34-, 35- electromagnet, 36-
Silicon rubber pipeline heating tape, 37- temperature controller, 38- steel column, 39- cross bar.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance or the quantity for implicitly indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be bright
Show or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple " contain
Justice is two or more.In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, art
Language " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or
It is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements.For the ordinary skill in the art, can be understood with concrete condition
The concrete meaning of above-mentioned term in the present invention.
Embodiment 1
In compliance with the above technical solution, referring to figs. 1 to Figure 10, the present embodiment provides a kind of axis pressure load for impact test
Device and method, under axis pressure condition to the research of impact load.
Referring to Fig.1, a kind of impact test apparatus includes lifting device, fixture control system, pressurizing device, pedestal and is dropped hammer
15。
Wherein, lifting device includes column 11, removable beam 10, first axle wheel 91, the second axis wheel 92, steel strand wires 24, volume
Raise machine 18 and screw rod 12.
Two root posts 11 are vertically arranged, and 11 top of two root posts is fixed with fixed beam 16, and column 11 is I-shaped.Column 11
On be evenly arranged with several bolts hole 25 along the vertical direction, removable 10 both ends of beam pass through screw rod 12 and are fixed on column 11,
Removable beam 10 can be moved up and down in the inside of column 11, and removable beam 10 is fixed on to the position of corresponding height by screw rod 12
It sets.Two groups of axis wheels are separately fixed at the middle part and right end top of fixed beam 16, lower right side of the hoist engine 18 in column 11, elevator
The steel strand wires wound on machine 18 are successively wound on first axle wheel 91 and the second axis wheel 92, and the free end of steel strand wires 24 passes through two height
Strength bolt connects removable beam 10, has spacing between two high-strength bolts.By remote control hoist engine 18, steel strand wires 24 are drawn
Dynamic removable beam 10 rises to desired height, and then screw rod 12 is fixed in corresponding bolt hole 25, makes removable beam 10
Both ends are located on two screw rods 12,15 reach desired height to make to drop hammer.
Referring to Fig. 2 to Fig. 5, fixture control system is made of hook, snib drawstring 17, drawstring handle 19 and snib 23.It hangs
Hook includes the first arc hook 13 and the second arc hook 14, and the first arc hook 13 is S-shaped, the top setting of the first arc hook
There is the first groove 131；Second arc, which links up with 14 tops, 3 bolts hole, and the second arc hook 14 passes through bolt by these three
Hole and three bolts are fixed on mobile girder steel 10.Second arc hook, 14 middle part offers the second groove 141, the second groove
141 shapes and sizes and the first groove 131 are identical, and the first arc hook 13 and 14 middle part of the second arc hook pass through pin 26
Hingedly, drop hammer 15 by wirerope hang over the first arc hook 13 and second arc link up with 14 lower parts junction, when snib 23
When in the first and second grooves, 14 locking of the first arc hook 13 and the second arc hook, without relative displacement, and first
Arc hook 13 and the second arc link up with 14 lower ends closure；When extracting snib 23, the first arc hook 13 is in gravity and pin
It is rotated under the action of 26 around pin 26, the first arc hook 13 and the second arc hook 14 separate, and dropping hammer 15 falls.Drop hammer 15 by
Mass block and tup are threadedly coupled composition.
Snib 23 is formed by fixedly connecting by the small steel plate that two boards thickness is 10mm by two fixing bolts, under snib 23
Portion is stuck in inside the card slot on 13 top of the first hook, and 17 one end of snib drawstring is tightly tied up on the fixing bolt on 23 top of snib,
The other end is fixedly connected with drawstring handle 19, and drawstring handle 19 is arranged on column 11.
Preferably, the cross section of the second arc hook 14 is U-lag, and the first arc hook 13 is located at the second arc hook 14
U-lag in.
Drawstring handle 19 is rotated, snib drawstring 17 is pulled, snib 23 is detached from the card slot of the second arc hook 14, so as to
Separate the first arc hook 13 and the second arc hook 14, causing to drop hammer 15 falls.
Referring to Fig.1, pressurizing device includes jack 3, the first force snesor 4, the first flexural pivot 71, the second flexural pivot 72, first
Baffle 811 and second baffle 82.The right side of test specimen 1 is connected with the first flexural pivot 71, and left side is connected with the second flexural pivot 72, the first flexural pivot
71 right side is jack 3, is the first force snesor 4 on the left of the second flexural pivot 72, divides on the outside of jack 3 and the first force snesor 4
It is not provided with first baffle 8 and second baffle 82, first baffle 81 and second baffle 82 are held together by 4 bolts,
The operating stick for pressing jack 3 applies axle power, exerts a force to test specimen 1, and the first force snesor 4 obtains axle power numerical value, wherein jack 3
Position hydraulic jack, wherein the center of the first flexural pivot and the second flexural pivot is on the extended line of 1 horizontal direction central axis of test specimen.
Referring to Fig. 6 to Figure 10, pedestal is by channel steel steel plate 2, the first semicircle pedestal 5, the second semicircle pedestal 6, upper cover 21, cylinder
Body pedestal 22 and the second force snesor 20 composition.Channel steel steel plate 2 is welded by channel steel and steel plate, and channel steel steel plate 2 passes through lower margin
Bolt is fixed on that channel steel in laboratory's geosyncline is opening up, built-in the there are two for measuring 22 counter-force of cylindrical body pedestal of channel steel
Two mechanics sensors 20 are placed with a cylindrical base 22, two cylindrical bottoms on two the second mechanics sensors 20 respectively
22 lower outsides of seat are cased with the first semicircle pedestal 5 and the second semicircle pedestal 6, and the first semicircle pedestal 5 and the second semicircle pedestal 6 pass through
Be bolted, after the first semicircle pedestal 5 and the connection of the second semicircle pedestal 6 with cover in 22 clearance fit of cylindrical body pedestal, and it is fixed
On channel steel steel plate 2.Cylindrical body pedestal 22 is freely determined according to the shape and size of test specimen.In the present embodiment, test specimen 1 is cylinder
Shape, the second force snesor 20 are annular force snesor.
Referring to figure 6 and figure 7, two 22 upper ends of cylindrical base are fixed with the first fixture, the upper surface of the first fixture 27 and
The shape of test specimen 1 is adapted, such as: if test specimen is cylinder, the first fixture upper surface is arcwall face, and arcwall face and radian and
The radian of 1 lower end of test specimen is identical；If test specimen 1 is hexahedron, 27 upper end facial plane of the first fixture, the first fixture 27 and the second folder
Have 21 both ends to be bolted, the first fixture 27 and the second fixture 21 are for fixing test specimen 1.
Preferably, column 11, fixed beam 16 and removable beam 10 are made of steel plate.
One kind being used for impact test method, comprising the following steps:
Step 1, the installation site for determining test specimen 1 check that can whole device operate normally, test specimen 1 are placed in cylindrical body
On pedestal 22, upper cover 21 is placed on above test specimen 1, with 4 bolt fixed covers 21 and cylindrical body pedestal 22, and then fixed test specimen 1.
Step 2, the operating stick for pressing jack 3 apply axle power, so that flexural pivot 7 is voluntarily adjusted position and press after flexural pivot 7 is fixed
The operating stick of dynamic jack 3, until the display of the first force snesor 4 reaches the axle power numerical value of needs, stop to jack 3 plus
Pressure.
Step 3 will be dropped hammer with fixture control system and 15 be sling, and be pressed the operator of hoist engine 18, pressed lifting key, will fall
Hammer 15 rises to desired height, and screw rod 12 is fixed to the corresponding bolt hole of column 11.
Step 4, wait drop hammer 15 it is static after, pull up snib drawstring 17, snib 23 is detached from the card of the second arc hook 14
Slot, the first arc hook 13 and the second arc hook 14 separate, and causing to drop hammer 15 falls, and hit test specimen 1, complete one-shot examination
It tests.
Step 5, the test of every completion one-shot, testing crew observe the surface of test specimen 1, and record drops hammer 15 in different height
When, the state that test specimen 1 occurs, and utilize signal picker DH5922 dynamic signalling analysis system and DHDAS Dynamic Signal
Acquisition analysis system to the second force snesor 20 in test to acquisition data arrange, obtain the impact force to drop hammer when
Journey curve and end reaction time-history curves, while observing test specimen breakoff phenomenon.
Each component is restored the state to before testing by step 6, off-test.
Embodiment 2
Referring to Fig.1 0, the present embodiment difference from example 1 is that, protection limiting device is provided with outside test specimen
28, referring to Fig.1 1, protection limiting device 28 includes that the cross section being welded by steel pole is the shielded frame of rectangle and is fixed on
Limiting device in frame, shielded frame top are welded by four cross bars 39 and steel column 38.Shielded frame lower part or so
Two sides oblique weld has the steel pole 30 and steel column 38 of intersection.
Lower part is fixed with the stability that the steel pole 30 being obliquely installed is used to improve frame, and the steel pole of lower frame leans outward
Tiltedly, the stability of entire frame is improved.
Referring to Fig.1 2, limiting device includes the first memory metal 31, the second memory metal 32, third memory metal 33, the
Four memory metals 34 and electromagnet 35, wherein the first memory metal 31 and third memory metal 33 are oppositely arranged, the second memory gold
Category 32 and the 4th memory metal 34 are oppositely arranged, and the first memory metal 31 and 33 one end of third memory metal are golden with the second memory
Belong to 32, the other end is welded with the 4th memory metal 34, and the junction of first to fourth memory metal is provided with electromagnet 35, electricity
Magnet 35 is circular magnetic chuck electromagnet, and first to fourth memory metal is all made of Nitinol and is made, 32 He of the second memory metal
The both ends of 4th memory metal 34 are fixedly connected with shielded frame inner wall using dismountable mode.Nitinol will for a kind of energy
The plastic deformation of itself is automatically restored to the special alloy of original-shape when temperature controller reaches 50 degree.Silicon rubber pipeline is heated
Band 7 is wrapped in above first to fourth memory metal, and four electromagnet 6 are located at the lower end surface of four memory metal welding positions.
Drop hammer 15 fall on test specimen 1 after, control 6 energization actuation face of electromagnet generates magnetic field, and magnetic field is attracted and drops hammer 15, allows the
It one to the 4th memory metal and drops hammer and generates magnetic circuit circuit between 15, will drop hammer and tightly inhale on memory metal.It has tested
Silicon rubber pipeline heating tape 36 is powered by Bi Hou, and when temperature controller 37 reaches 50 degree, first to fourth memory metal is restored to originally
Shape.
Using the present embodiment carry out impact test method the following steps are included:
Step 1 determines test specimen installation site, and test specimen 1 is placed on above support 21, and left and right is placed, and will protect limiting device
Left and right housing sleeve is inserted into insert row in the upper surface of test specimen 1, by plug, starts circular magnetic chuck electromagnet system.
Step 2 will be dropped hammer with fixture control system and be sling, and be pressed the operator of hoist engine 18, pressed lifting key, will drop hammer
Desired height is risen to, screw rod 12 is fixed to the corresponding keyhole of i shaped steel column 11.
Step 3, wait drop hammer 15 stablize after, brake snib drawstring 17, snib 23 be detached from the second arc hook 14 card slot, from
And the first arc hook 13 and the second arc hook 14 can be made to separate, making to drop hammer 15 falls, and hits test specimen.
Step 4 while hit test specimen 1, due to the effect of 6 electromagnetism of circular magnetic chuck electromagnet, makes the suction of mass block tightly
At one piece.
Step 5 presses temperature controller 8, presets temperature 50, and silicon rubber pipeline heating tape 7 is begun to warm up, and Nitinol is on 50 degree of left sides
Automatically restore the shape to before testing at a temperature of right.
Step 6, off-test restore the state to before testing.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (10)
1. a kind of impact test apparatus, which is characterized in that including the protection limiting device (28) in test specimen (1) outside, protection is arranged
Limiting device (28) includes shielded frame and limiting device, and shielded frame is formed by fixedly connecting by several steel poles, in shielded frame
It is fixed with limiting device；Limiting device includes the first memory metal (31) being fixedly connected sequentially, the second memory metal (32), and
Three memory metals (33) and the 4th memory metal (34), the junction of first to fourth memory metal are provided with electromagnet (35).
2. a kind of impact test apparatus according to claim 1, which is characterized in that twined outside first to fourth memory metal
It is wound with silicon rubber pipeline heating tape (7).
3. a kind of impact test apparatus according to claim 1, which is characterized in that shielded frame lower part two sides are respectively and fixedly provided with
Two cross one another steel poles (30).
4. a kind of impact test apparatus according to claim 1, which is characterized in that electromagnet (35) is circular magnetic chuck electromagnetism
Iron.
5. a kind of impact test apparatus according to claim 1, which is characterized in that further include pressurizing device and for examination
Part applies impact force and drops hammer (15), and pressurizing device includes the first baffle (81) and second baffle (82) that are fixedly connected, and first
It is fixedly connected on the inside of baffle (81) with the pedestal of jack (3), fixes and connect with the first flexural pivot (71) one end at the top of jack (3)
It connects, is provided with the first force snesor (4) on the inside of second baffle (82), the first force snesor (4) and the second flexural pivot (72) one end are solid
The other end of fixed connection, the first flexural pivot (71) and the second flexural pivot (72) with test specimen (1) for being fixedly connected.
6. a kind of impact test apparatus according to claim 1, which is characterized in that further include lifting device, lifting device
It is fixed with including fixed beam (16), removable beam (10), hoist engine (18) and two root posts (11), two root posts (11) top
Determine beam (16), be evenly arranged with several bolts hole (25) on column (11) along the vertical direction, removable beam (10) both ends pass through spiral shell
Bar (12) and bolt hole (25) are fixed on column (11), and fixed beam one end (16) and middle part are respectively fixed with first axle wheel (91)
With the second axis wheel (92), the steel strand wires (24) of hoist engine (18) are successively wound on first axle wheel (91) and the second axis wheel (92), steel
The free end of twisted wire (24) is fixedly connected with removable beam (10).
7. a kind of impact test apparatus according to claim 1, which is characterized in that further include fixture control system, fixture
Control system includes hook and snib (23), and hook includes the first arc hook (13) and the second arc hook (14), the first arc
It is S-shaped that shape, which links up with (13), and the first arc hook top is provided with the first groove (131)；Second arc hook (14) is fixed on shifting
On dynamic girder steel (10), offered the second groove (141) in the middle part of the second arc hook (14), the second groove (141) and the first groove
(131) it is connected by snib (23), in the middle part of the first arc hook (13) and the second arc hook (14) hingedly by pin (26),
Drop hammer (15) hang over the junction of the first arc hook (13) and the second arc hook (14) lower part, when snib (23) are positioned at first
When in the second groove, the first arc links up with (13) and the second arc hook (14) locks, without relative displacement, and the first arc
Link up with (13) and the second arc hook (14) lower end closure；When extracting snib (23), the first arc links up with (13) and the second arc
It is separated that shape links up with (14) lower end.
8. a kind of impact test apparatus according to claim 7, which is characterized in that snib drawstring (17) one end and snib
(23) it is fixedly connected, snib drawstring (17) other end is fixedly connected with drawstring handle (19), and drawstring handle (19) is arranged in column
(11) on.
9. a kind of impact test apparatus according to claim 7, which is characterized in that the second arc links up with the cross section of (14)
For U-lag, the first arc hook (13) is located in the U-lag of the second arc hook (14).
10. a kind of impact test apparatus according to claim 1, which is characterized in that further include for fixing test specimen (1)
Pedestal, pedestal include channel steel steel plate (2), cylindrical body pedestal (22) and the second force snesor (20), and channel steel steel plate is provided on (2)
Two cylindrical body pedestals (22) are provided with second mechanics and pass between two cylindrical body pedestals (22) and channel steel steel plate (2)
Sensor (20), cylindrical body pedestal (22) upper end are fixed with the first fixture, the upper surface of the first fixture (27) and the shape of test specimen (1)
It is adapted, the first fixture (27) is bolted with the second fixture (21) both ends.
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| CN201811149822.0A CN109374446B (en) | 2018-09-29 | 2018-09-29 | A kind of impact test apparatus |
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| CN201811149822.0A CN109374446B (en) | 2018-09-29 | 2018-09-29 | A kind of impact test apparatus |
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| CN109374446B CN109374446B (en) | 2019-08-09 |
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| CN110243703A (en) * | 2019-07-03 | 2019-09-17 | 西南交通大学 | A kind of more angle of attack pendulum impact test platforms of the high level of shed hole structure and its experimental method |
| CN110658056A (en) * | 2019-11-13 | 2020-01-07 | 合肥工业大学 | Circular pipe fitting low-speed drop hammer impact test detection device and impact test instrument |
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| CN110658056A (en) * | 2019-11-13 | 2020-01-07 | 合肥工业大学 | Circular pipe fitting low-speed drop hammer impact test detection device and impact test instrument |
| CN112461150A (en) * | 2020-11-11 | 2021-03-09 | 东北石油大学 | Device and method for measuring strain of guide pipe for well drilling |
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| CN112834155A (en) * | 2021-01-23 | 2021-05-25 | 长安大学 | Magnetic suspension clamping support and method for preventing secondary impact in impact test |
| CN113188927A (en) * | 2021-03-25 | 2021-07-30 | 河海大学 | Impact power model test device and test method for buried pressure pipeline |
| CN113188927B (en) * | 2021-03-25 | 2022-07-29 | 河海大学 | Buried pressure pipeline impact power model test device and test method |
| CN113466063A (en) * | 2021-05-24 | 2021-10-01 | 长安大学 | Drop hammer impact test platform |
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| CN114354400A (en) * | 2022-01-13 | 2022-04-15 | 长安大学 | Drop hammer type impact test device with controllable speed |
| CN114354400B (en) * | 2022-01-13 | 2023-08-08 | 长安大学 | Drop hammer type impact test device with controllable speed |
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