型号: | - |
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品牌: | 双佳 |
原产地: | 中国 |
类别: | 工业设备 / 通用机械 / 机床 |
标签︰ | 开式下击器 , 下击器 |
单价: |
¥20000
/ 件
|
最少订量: | 1 件 |
bumper jar (hereinafter called as bumper jar )is a mechanical jarring tool . It can make jar repeatedly the stuck drill stem to free from stuck point. When stuck drill stem can not be released by lifting and jarring, the bumper jar can be rotated to make releasable fishing tool to release fish. When used with mechanical internal cutter, it can provide an expected feeding force to the internal cutter so as to cutting steadily. When used with reversing unit , it can compensate the rising stroke for threads after reversing.
Working mechanism
Energy conversion in jarring operation
Jarring downward is made by means of energy conversion. Raising drill stem shall make bumper jar to be pull down at a certain height to produce potential energy. Go on raising drill stem, the drill stem has a strain energy due to spring strain. When drill stem is lowered suddenly , the energy stored in drill stem force the drill stem to move downward in acceleration.When bumper jar reach a closed position, the above two energies at this instant change into large downward jarring force.
Main factors having influence on jarring force
The bigger hanging weight on top drill stem of bumper jar makes a bigger jarring force;
The longer the spring extension of drill stem is when raising drill stem, the bigger the jarring force is;
The longer the stroke of the bumper jar is , the bigger the jarring force of jar is.
Parameter/Model | KXJ31B | KXJ34B | KXJ36B | KXJ42B | KXJ44B | KXJ46B | KXJ62B | KXJ64B | KXJ70B | KXJ76B | KXJ80B | KXJ85B | KXJ90B |
O.D. (mm) | 79 | 89 | 95 | 108 | 114 | 121 | 159 | 165 | 178 | 197 | 203 | 219 | 229 |
I.D. (mm) | 25.4 | 28 | 32 | 38 | 38 | 38 | 51 | 51 | 70 | 70 | 70 | 76 | 76 |
Sealing pressure | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
(MPa) | |||||||||||||
Max.tensile load | 300 | 400 | 500 | 700 | 1120 | 1200 | 1430 | 1430 | 1530 | 1630 | 1630 | 1630 | 2200 |
(kN) | |||||||||||||
Max.work torque (kN.m) | 3 | 3.5 | 4 | 6 | 7 | 8 | 13 | 13 | 15 | 20 | 20 | 20 | 25 |
Work stroke | 508 | 508 | 508 | 508 | 1000 | 1000 | 1400 | 1400 | 1400 | 1500 | 1500 | 508 | 1500 |
(mm) | |||||||||||||
Connection | NC23 | NC26 | NC26 | NC31 | NC31 | NC38 | NC50 | NC50 | NC50 | 6 5/8 REG | 6 5/8 REG | 6 5/8 REG | 7 5/8REG |
closed length | 1410 | 1438 | 1410 | 1608 | 2100 | 2110 | 2604 | 2604 | 2650 | 2730 | 2730 | 1769 | 2760 |
(mm) | |||||||||||||
Weight | 45kg | 50kg | 58kg | 95kg | 130kg | 146kg | 240kg | 285kg | 330kg | 430kg | 455kg | 383kg | 660KG |
黑龙江北方双佳钻采机具有限责任公 | |
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国家/地区︰ | 黑龙江省牡丹江市 |
经营性质︰ | 生产商 |
联系电话︰ | 15145386673 |
联系人︰ | 王艳 (销售经理) |
最后上线︰ | 2015/03/17 |