CN104142278B - Drop hammer type coupled static-dynamic loadingi impact experiment apparatus - Google Patents
Drop hammer type coupled static-dynamic loadingi impact experiment apparatus Download PDFInfo
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- CN104142278B CN104142278B CN201410418991.5A CN201410418991A CN104142278B CN 104142278 B CN104142278 B CN 104142278B CN 201410418991 A CN201410418991 A CN 201410418991A CN 104142278 B CN104142278 B CN 104142278B
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- 238000002474 experimental method Methods 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 230000003068 static effect Effects 0.000 claims abstract description 21
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 230000003116 impacting effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 5
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- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000010429 evolutionary process Effects 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
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Abstract
A kind of drop hammer type coupled static-dynamic loadingi impact experiment apparatus, it is characterized in that it includes fuselage (1) and sample plummer (2), sample plummer (2) is positioned on fuselage (1), sample is arranged on upper and with applying static pressure the hydraulic pressure static load pressure mechanism of sample plummer (2) and is connected, be provided with the beater mechanism that can move up and down along lead (7) on the top of fuselage (1), beater mechanism is connected with the hoisting mechanism being arranged on underbelly. The present invention is capable of dynamic, the controlled and different sound combining form of coal petrography sample and loads, and simulates the multiple stress-wave loading mode of coal petrography material, makes experimental result more have practical meaning in engineering. Its simple in construction, easy to operate, controllability is good. State is tightened up, it is prevented that beater mechanism falls when accident power-off and hurts sb.'s feelings, it is achieved effective safeguard protection by the power-off of brake drive motor and electronic grapple.
Description
Technical field
The present invention relates to a kind of rock mechanics technology, especially a kind of mine shock loading experimental provision, specifically a kind of drop hammer type coupled static-dynamic loadingi impact experiment apparatus.
Background technology
Impulsion pressure is one of the most serious natural disaster of running in colliery and rock engineering in world wide, showing as the elasticity being gathered in coal and rock can suddenly, fiercely discharges, coal petrography is thrown to tunnel or stope by power, make coal and rock sharp pounding and destruction, cause the disasters such as tunnel blocking, equipment damage and casualties. At present, impulsion pressure disaster has involved China's major part mining area, and the frequency and the earthquake intensity of its generation increase further, and the extent of injury is further serious, and safety of coal mines efficiently produces composition grave danger.
In view of the popularity of impulsion pressure generation, multiple and seriousness, put into a large amount of manpowers both at home and abroad and carry out relevant research work to material resources. For reappearing ambient stress feature and evolutionary process when coal rock dynamic disaster occurs, think that theoretical research provides foundation, coupled static-dynamic loadingi experimental technique that the highly desirable employing of research worker and engineering actual loading pattern more meet and device, this is that existing most experimental technique is not accounted for experimental provision. Some current coupled static-dynamic loadingi experimental provision such as Hopkinson pressure bars are many based on Pneumatic catapult or light-gas gun discharger, and costly, and in experimentation, energy transformation ratio is low for this appliance arrangement, and it is big to launch noise pollution, and experimental cost is higher.
Summary of the invention
It is an object of the invention to for more existing coupled static-dynamic loadingi experimental provisions based on Pneumatic catapult or light-gas gun discharger, make device structure complicated, energy transformation ratio is low, transmitting noise pollution is big, the problem that experimental cost is higher, a kind of drop hammer type coupled static-dynamic loadingi impact test apparatus of design.
The technical scheme is that
A kind of drop hammer type coupled static-dynamic loadingi impact experiment apparatus, it is characterized in that it includes fuselage 1 and sample plummer 2, sample plummer 2 is positioned on fuselage 1, sample is arranged on sample plummer 2 and is connected with the hydraulic pressure static load pressure mechanism applying static pressure, be provided with the beater mechanism that can move up and down along lead 7 on the top of fuselage 1, beater mechanism is connected with the hoisting mechanism being arranged on underbelly.
Described hydraulic pressure static load pressure mechanism includes hydraulic cylinder 25, lead 20, flange 18, top board 6, coupling bar 19 and lower platen 5, hydraulic cylinder 25 connects top board 6 by flange 18, top board 6 utilizes lead 20 to move up and down, and top board 6 and lower platen 5 are movably connected by coupling bar 19.
Described coupling bar 19 afterbody leaves more than 1cm surplus.
Described hydraulic pressure static load pressure mechanism also includes hydraulic control unit, and hydraulic control unit connects hydraulic cylinder 25.
Described hoisting mechanism includes brake drive motor 21, cylinder 22, assembly pulley, hawser 12 and electronic grapple 11, electronic grapple 11 is vertically connected to hawser 12 afterbody, hawser is wound on cylinder 22 after the assembly pulley on fuselage, and cylinder 22 is connected on the outfan of brake drive motor 21.
Described electronic grapple 11 includes mobile jib 26, grabs bar 27, electric magnet 28, connecting rod 29, slide cartridge 30 and spring 31, slide cartridge 30 moves up and down under the control of electric magnet 28 on mobile jib 23, grabbing bar 27 by connecting rod 29 drive open and tighten up, spring 31 is sleeved on mobile jib 26 and makes slide cartridge 28 tight against electric magnet 28.
Described beater mechanism includes impacting tup 17, supporting plate 8, counterweight 9, guide post 10 and connecting rod 16, impact tup 17 and be fixed on the bottom of supporting plate 8, counterweight 9 is placed on supporting plate 8 through guide post 10 and connecting rod 16, connecting rod 16 is connected with the electronic grapple 11 in hoisting mechanism, after electronic grapple 11 unclamps, supporting plate lead 7 along fuselage under the action of gravity of counterweight 9 does the movement of falling object, and drive impact tup 17 is given and is loaded with the sample 4 of static pressure to impact by hydraulic pressure static load pressure mechanism while being arranged on sample plummer.
The centre of described impact tup 17 is cylindrical-shaped structure, and stigma is hemispherical.
Lead 7 is provided with the travel switch 15 controlling beater mechanism extreme higher position.
Beneficial effects of the present invention:
It is capable of dynamic, the controlled and different sound combining form of coal petrography sample to load, simulates the multiple stress-wave loading mode of coal petrography material, make experimental result more have practical meaning in engineering. Its simple in construction, easy to operate, controllability is good. State is tightened up, it is prevented that beater mechanism falls when accident power-off and hurts sb.'s feelings, it is achieved effective safeguard protection by the power-off of brake drive motor and electronic grapple.
Accompanying drawing explanation
Fig. 1 is the front view of a kind of drop hammer type coupled static-dynamic loadingi impact experiment apparatus.
Fig. 2 is the side view of a kind of drop hammer type coupled static-dynamic loadingi impact experiment apparatus.
Fig. 3 is hydraulic pressure static load pressure mechanism and the schematic diagram impacting tup position
Fig. 4 is the schematic diagram of electronic grapple
In figure: 1 is fuselage, 2 is sample plummer, 3 is pressure transducer, 4 is sample, 5 is lower platen, 6 is top board, 7 is lead, 8 is supporting plate, 9 is counterweight, 10 is guide post, 11 is electronic grapple, 12 is hawser, 13 is pulley, 14 is pulley, 15 is travel switch, 16 is connecting rod, 17 for impacting tup, 18 is flange, 19 is coupling bar, 20 is lead, 21 is brake drive motor, 22 is cylinder, 23 is pulley, 24 is pulley, 25 is hydraulic cylinder, 26 is mobile jib, 27 for grabbing bar, 28 is electric magnet, 29 is connecting rod, 30 is slide cartridge, 31 is spring.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
As Figure 1-4.
A kind of drop hammer type coupled static-dynamic loadingi impact experiment apparatus, it includes fuselage 1 and sample plummer 2, sample plummer 2 is positioned on fuselage 1, sample is arranged on sample plummer 2 and is connected with the hydraulic pressure static load pressure mechanism applying static pressure, the beater mechanism that can move up and down along lead 7 is installed on the top of fuselage 1, being provided with on lead 7 and beater mechanism lifting height carries out spacing travel switch 15, beater mechanism is connected with the hoisting mechanism being arranged on underbelly.As shown in Figure 1. Hydraulic pressure static load pressure mechanism includes hydraulic cylinder 25(Fig. 2), lead 20, flange 18, top board 6, coupling bar 19 and lower platen 5, hydraulic cylinder 25 connects top board 6 by flange 18, top board 6 utilizes lead 20 to move up and down, top board 6 and lower platen 5 are movably connected by coupling bar 19, and coupling bar 19 afterbody leaves more than 1cm surplus. Described hydraulic pressure static load pressure mechanism also includes hydraulic control unit, and hydraulic control unit connects hydraulic cylinder 25. Described hoisting mechanism includes brake drive motor 21, cylinder 22, assembly pulley, hawser 12 and electronic grapple 11, electronic grapple 11 is vertically connected to hawser 12 afterbody, hawser is wound on cylinder 22 after the assembly pulley on fuselage, and cylinder 22 is connected on the outfan of brake drive motor 21 (Fig. 1 bottom). Electronic grapple 11 is as shown in Figure 4, including mobile jib 26, grab bar 27, electric magnet 28, connecting rod 29, slide cartridge 30 and spring 31, slide cartridge 30 moves up and down under the control of electric magnet 28 on mobile jib 23, grabbing bar 27 by connecting rod 29 drive open and tighten up, spring 31 is sleeved on mobile jib 26 and makes slide cartridge 28 tight against electric magnet 28. Beater mechanism includes impacting tup 17, supporting plate 8, counterweight 9, guide post 10 and connecting rod 16, impact tup 17 and be fixed on the bottom of supporting plate 8, counterweight 9 is placed on supporting plate 8 through guide post 10 and connecting rod 16, connecting rod 16 is connected with the electronic grapple 11 in hoisting mechanism, after electronic grapple 11 unclamps, supporting plate lead 7 along fuselage under the action of gravity of counterweight 9 does the movement of falling object, and drive impact tup 17 is given and is loaded with the sample 4 of static pressure to impact by hydraulic pressure static load pressure mechanism while being arranged on sample plummer. The centre impacting tup 17 is cylindrical-shaped structure, and stigma is hemispherical. The horizontal layout of each parts is as shown in Figure 3.
The using method of the present invention is:
First, hydraulic cylinder 24 drives top board 6 to move upward, and drives lower platen 5 to move together by coupling bar 19, places sample 4 and pressure transducer 3 bottom sample plummer 2 and lower platen 5.
Secondly, electronic grapple 11 moves down, promptly the connecting rod 16 on beater mechanism.
3rd, hydraulic cylinder 25 moves down, and drives top board 6 to apply pressure on lower platen 5, sample 4 is applied dead load.
4th, brake drive motor 21 drives cylinder 22, is wound around hawser 12, is lifted up by beater mechanism.
5th, electronic grapple 11 opens, and discharges beater mechanism, and jump bit 17 impacts on top board 6, and sample 4 is applied dynamic loading.
Travel switch 15 on fuselage 1 can carry out position limitation protection to when impacting mechanism lifts. During electric magnet 28 power-off of electronic grapple 11, spring 31 is strained slide cartridge 30 and is driven by connecting rod 29 and grab bar 27 and tighten up, and when electric magnet 28 is energized, slide cartridge 30 moves, and drives and grabs bar 27 and open, and tup 17 is impacted in release. By controlling the hoisting depth of hoisting mechanism and change is placed on supporting plate 8 counterweight 9 quantity, scalable impact energy and impact velocity.
Above example is only intended to help to understand method and the core concept thereof of the present invention. For one of ordinary skill in the art, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, this specification content should not be construed as limitation of the present invention.
Claims (7)
1. a drop hammer type coupled static-dynamic loadingi impact experiment apparatus, it is characterized in that it includes fuselage (1) and sample plummer (2), sample plummer (2) is positioned on fuselage (1), sample is arranged on upper and with applying static pressure the hydraulic pressure static load pressure mechanism of sample plummer (2) and is connected, be provided with the beater mechanism that can move up and down along lead (7) on the top of fuselage (1), beater mechanism is connected with the hoisting mechanism being arranged on underbelly;Described hydraulic pressure static load pressure mechanism includes hydraulic cylinder (25), lead (20), flange (18), top board (6), coupling bar (19) and lower platen (5), hydraulic cylinder (25) connects top board (6) by flange (18), top board (6) utilizes lead (20) to move up and down, and top board (6) and lower platen (5) are movably connected by coupling bar (19); Described coupling bar (19) afterbody leaves more than 1cm surplus.
2. according to the drop hammer type coupled static-dynamic loadingi impact experiment apparatus described in claim 1, it is characterized in that described hydraulic pressure static load pressure mechanism also includes hydraulic control unit, hydraulic control unit connects hydraulic cylinder (25).
3. drop hammer type coupled static-dynamic loadingi impact experiment apparatus according to claim 1, it is characterized in that described hoisting mechanism includes brake drive motor (21), cylinder (22), assembly pulley, hawser (12) and electronic grapple (11), electronic grapple (11) is vertically connected to hawser (12) afterbody, hawser is wound on cylinder (22) after the assembly pulley on fuselage, and cylinder (22) is connected on the outfan of brake drive motor (21).
4. drop hammer type coupled static-dynamic loadingi impact experiment apparatus according to claim 3, it is characterized in that described electronic grapple (11) include mobile jib (26), grab bar (27), electric magnet (28), connecting rod (29), slide cartridge (30) and spring (31), slide cartridge (30) moves up and down under the control of electric magnet (28) on mobile jib (23), grabbing bar (27) by connecting rod (29) drive open and tighten up, spring (31) is sleeved on mobile jib (26) and makes slide cartridge (28) tight against electric magnet (28).
5. drop hammer type coupled static-dynamic loadingi impact experiment apparatus according to claim 1, it is characterized in that described beater mechanism includes impacting tup (17), supporting plate (8), counterweight (9), guide post (10) and connecting rod (16), impact tup (17) and be fixed on the bottom of supporting plate (8), counterweight (9) is placed on supporting plate (8) through guide post (10) and connecting rod (16), connecting rod (16) is connected with the electronic grapple (11) in hoisting mechanism, after electronic grapple (11) unclamps, supporting plate lead (7) along fuselage under the action of gravity of counterweight (9) does the movement of falling object, drive impact tup (17) is given and is loaded with the sample (4) of static pressure to impact by hydraulic pressure static load pressure mechanism while being arranged on sample plummer.
6. drop hammer type coupled static-dynamic loadingi impact experiment apparatus according to claim 5, it is characterised in that the centre of described impact tup (17) is cylindrical-shaped structure, and stigma is hemispherical.
7. drop hammer type coupled static-dynamic loadingi impact experiment apparatus according to claim 1 or 5, it is characterised in that be provided with the travel switch (15) controlling beater mechanism extreme higher position on lead (7).
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| CN201410418991.5A CN104142278B (en) | 2014-08-25 | 2014-08-25 | Drop hammer type coupled static-dynamic loadingi impact experiment apparatus |
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| CN201410418991.5A CN104142278B (en) | 2014-08-25 | 2014-08-25 | Drop hammer type coupled static-dynamic loadingi impact experiment apparatus |
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| CN104142278B true CN104142278B (en) | 2016-06-08 |
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Cited By (1)
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| TWI612284B (en) * | 2016-08-25 | 2018-01-21 | Kayaba System Machinery Co Ltd | Load application device |
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