CN1022197C - Over-travel rotating drill rod and rebound vibration absorption integrated device - Google Patents
Over-travel rotating drill rod and rebound vibration absorption integrated device Download PDFInfo
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- CN1022197C CN1022197C CN 91104982 CN91104982A CN1022197C CN 1022197 C CN1022197 C CN 1022197C CN 91104982 CN91104982 CN 91104982 CN 91104982 A CN91104982 A CN 91104982A CN 1022197 C CN1022197 C CN 1022197C
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- piston
- absorbing
- ratchet
- bounce
- impact
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Abstract
The invention relates to an over-travel rotating drill rod and rebound vibration absorption comprehensive device for a handheld hydraulic rock drill. The device mainly comprises a vibration absorption cylinder body, a vibration absorption piston, a screw pair wrapped inside the vibration absorption piston, a ratchet wheel, a pawl, a tower-shaped spring, a positioning pin, an oil passage and the like. The hydraulic rock drill with the device has the advantages of small rebound vibration, high energy utilization rate, large torque of a rotary drill rod, light weight and the like. International patent classification number E21C 3/00.
Description
The invention belongs to mine excavation equipment, particularly be used for the commentaries on classics pricker and the shock-absorbing means of hand-held hydraulic hammer drill.International Patent classificating number is E21C 3/00.
At present, hand-held hydraulic hammer drill its piston when work impacts drill steel with the frequency of nearly 50HZ, single-impact can be in this impact energy between the 60-100J when piston hits drill steel, most of being delivered to by drill steel broken rock in the rock, and rock also produces certain reaction force to drill steel simultaneously, and this reaction force is delivered to the energy that produces on the body by drill steel and is called the bounce-back energy.This bounce is at the instantaneous hundreds of kilogram (showing according to test data) that reaches, the energy part heating of its generation discharges, and a part is born field observation jointly by operator's arm and supporting leg, because the bounce-back energy is bigger, the operator basically can't be normally, work more for a long time.Therefore do not solve this key issue of bounce, then the hand-held hydraulic hammer drill just can't drop into the industry use.
In addition, owing to be subjected to the volume weight limits, torque mechanism can not be too huge for the hand-held hydraulic hammer drill, and torque is also lower like this.Because torque is little, changes motionless drill steel, often produce card pricker phenomenon in the commercial Application, this card pricker problem also is fatal problem in commercial Application.
Improve much though hand-held hydraulic hammer drill capacity usage ratio is compared with air rock drill, still capacity usage ratio is low with regard to hydraulic gate, is the parameter designing problem on the one hand, is because the bounce-back energy can not utilize and waste fully on the other hand.
Though complete machine weight also is a problem that urgency is to be solved, be not the most key problem.
The technical problem that therefore existing hand-held hydraulic hammer drill mainly exists is:
1. the bounce-back vibration is big.
2. capacity usage ratio is low.
3. it is little to change the pricker torque.
4. weight is heavier.
The purpose of this invention is to provide a kind of surpassed distance that is used for the hand-held hydraulic hammer drill and change pricker and bounce-back absorbing integration unit.
The object of the present invention is achieved like this: it provides a kind of surpassed distance to change pricker and bounce-back absorbing integration unit, the principle that this device adopts is to utilize an absorbing piston to replace thrust bearing, after making that bounce affacts on the absorbing piston, the absorbing piston moves backward, the pressure oil in compression absorbing piston hydraulic pressure chamber, pressure oil produces the instantaneous pressure peak value, this pressure peak is flattened by high pressure accumulator, the higher hydraulic oil of this then force value is delivered to the impact piston ante-chamber rapidly, promotes piston and makes drawback movement.And impact piston high speed drawback movement the time, rotate by the screw pair that is included in the absorbing internal piston, produce moment of torsion, rotate drill steel, reaching changes the pricker purpose.When impacting, because screw pair is included in the absorbing internal piston, axle thrust is transmitted by the absorbing piston, screw pair is not subjected to axial force, so impact energy is not fallen by the loss of friction of spiral end face, all hits drill steel effectively, be delivered in the rock, thereby improved overall efficiency.
Surpassed distance of the present invention changes in pricker and the bounce-back absorbing integration unit, the absorbing oil cylinder links to each other with handpiece body, the absorbing piston is assemblied in absorbing oil cylinder inside axially slidably, and thrust bearing is installed in to be changeed between drill sleeve and the absorbing piston, and the bounce that it will change on the drill sleeve passes to the absorbing piston.Ratchet and rifle nut threaded engagement, ratchet one end radial support is in the inside of absorbing piston, other end radial support is at the interior circle of thrust bearing, rifle nut matches with impact piston with screw pair, straight strong nut is fixed on threadably and changes on the drill sleeve, and straight key nut matches with straight key with impact piston.Ratchet is fixed on the handpiece body, and the tower spring is pressed in an end of ratchet, and ratchet is matched with ratchet, and the hydraulic fluid chamber that forms between absorbing oil cylinder and the absorbing piston is communicated with high pressure accumulator, and high pressure accumulator also communicates with the impact piston ante-chamber.
The present invention compared with prior art, bounce-back vibration is little, the capacity usage ratio height, it is big, in light weight to change the pricker moment of torsion.
Fig. 1 is the schematic diagram that surpassed distance of the present invention changes pricker and bounce-back absorbing integration unit.
Fig. 2 is the main sectional view that surpassed distance of the present invention changes pricker and bounce-back absorbing integration unit.
The sectional view of Fig. 3 for cutting open along the B-B line among Fig. 2.
Fig. 4 is the absorbing piston sectional view among Fig. 2.
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
Surpassed distance of the present invention changes pricker and bounce-back absorbing integration unit, and it comprises absorbing oil cylinder 1, absorbing piston 2, the rifle nut 3 in the screw pair, ratchet 4, ratchet 5, tower spring 6, impact piston 7, handpiece body 8, thrust bearing 9 changes drill sleeve 10, straight key nut 11 and alignment pin 12.Absorbing piston 2 is assemblied in absorbing oil cylinder 1 inside, can move axially, and limits its rotation with alignment pin 12.Form a hydraulic fluid chamber between absorbing piston 2 and the absorbing oil cylinder 1, this chamber is communicated with high pressure accumulator, this accumulator also is communicated with impact piston 7 ante-chambers 17, and thrust bearing 9 is installed in to be changeed between drill sleeve 10 and the absorbing piston 2, and the bounce that it will change on the drill sleeve 10 passes to absorbing piston 2.Rifle nut 3 screw threads in the screw pair connect together with ratchet 4, have three helicla flutes on the outer peripheral face of the screw key of three protrusions and impact piston 7 to cooperatively interact on its inner peripheral surface, form screw pair.During the impact piston backhaul, ratchet 4 is blocked and can not rotate by thorn claw 5.Ratchet 5 is installed on the handpiece body 8.Under the effect of tower spring 6, ratchet 5 passes slotted eye 14 on the absorbing piston 2 (see figure 3) that matches with ratchet 4.In the present embodiment, have 14, one bearing pin slotted eyes 15 of 4 equally distributed axial slots on absorbing piston 2 peripheries.Have 3 helical splines and 3 straight keyways on the impact piston 7, helicla flute and straight keyway are arranged at interval.Impact piston 7 is done the compound motion of straight line and rotation, i.e. screw along helix.Three straight keys on the impact piston cooperate with straight key nut 11, and straight key nut is threaded togather with commentaries on classics drill sleeve 10, when the impact piston backhaul, impact piston 7 is slidingly connected by straight keyway with straight key nut 11, the rotatory force of impact piston is passed to by straight key nut 11 changes drill sleeve 10, rotates drill steel.During impact, ratchet 4 can rotate, and the helical spline on the impact piston 7 is promoting rifle nut 3 and rotating with the ratchet 4 of its connection one.Piston 7 does not rotate, a moving linearly, high speed impact drill steel.Supporting one end that ratchet 4 rotates is the interior circle of absorbing piston 2, and the other end is the interior circle of thrust bearing 9.The complete machine axle thrust passes to thrust bearing 9 by bounce-back absorbing piston 2, passes to then and changes drill sleeve 10, and is the same with the bounce pipeline, but direction is opposite.Because axle thrust and bounce all will be transmitted by absorbing piston oil ante-chamber 13, therefore, there is not rigid shock in body.Rifle nut 3 and ratchet 4 cover the interior volume in absorbing piston and thrust bearing 9 formation, become quick condition, are not subjected to axle thrust and bounce effect, and stress is good, and capacity usage ratio greatly improves.
Referring to Fig. 1, bounce F rebound effect to the bounce-back absorbing piston 2 after, promoting piston 2 moves backward, the hydraulic oil of compression piston back cavity 13, pressure oil produces the instantaneous pressure peak value, and this pressure instantaneous peak value is flattened by high pressure accumulator 16, immediately be delivered to the ante-chamber 17 of hammer drill impact piston 7 then, promote piston 7 and make the high speed drawback movement, impact piston 7 is done the straight-line while of high speed backhaul, need rotate along helix.Because after absorbing the bounce-back energy, the pressure oil pressure average that promotes hammer drill impact piston 7 increases, the power that promotion impact piston 7 moves backward also just increases, and the component that produces during the impact piston rotation increases simultaneously, that is commentaries on classics pricker moment of torsion increases.
During impact, because screw pair is covered in absorbing piston 2 inside, axle thrust is transmitted by the absorbing piston, the front/rear end of rifle nut 3 does not bear normal pressure (being axle thrust), does not just produce frictional force (if rifle nut bears axle thrust, its frictional force that forms on the both ends of the surface annulus reaches tens kgfs so) yet, impact energy is not lost in and overcomes on the rifle nut end-face friction, but all impact drill steel, and be delivered in the rock, improved the complete machine capacity usage ratio greatly.
The invention that surpassed distance changes pricker and bounce-back absorbing integration unit has been applied on the light-duty hand-held hydraulic hammer drill of HD-24 particularly, has obtained good effect, answers the hammer drill commercial Application to solving hand-held liquid, and great, creationary breakthrough is arranged.
The invention of this device, making the hand-held hydraulic hammer drill really drop into commercial Application becomes possibility, also belongs to the leading position in the world.Make China in all kinds of mines of the overwhelming majority, replace air rock drill, tunneling development, modernization steps to a new level.For the mine provides efficiently a kind of, energy-conservation novel rig.
Claims (2)
1, a kind of surpassed distance that is used for the hand-held hydraulic hammer drill changes pricker and bounce-back absorbing integration unit, it is characterized in that the absorbing oil cylinder links to each other with handpiece body, the absorbing piston is assemblied in absorbing oil cylinder inside axially slidably, thrust bearing is installed in to be changeed between drill sleeve and the absorbing piston, the bounce that it will change on the drill sleeve passes to the absorbing piston, ratchet and rifle nut threaded engagement, ratchet one end radial support is at the interior circle of absorbing piston, other end radial support is at the interior circle of thrust bearing, rifle nut matches with impact piston with screw key, straight key nut is fixed on threadably to be changeed on the drill sleeve, straight key nut matches with straight key with impact piston, ratchet is fixed on the handpiece body, the tower spring is pressed in an end of ratchet, ratchet is matched with ratchet, and the hydraulic fluid chamber that forms between absorbing oil cylinder and the absorbing piston is communicated with high pressure accumulator, and high pressure accumulator also communicates with the impact piston ante-chamber.
2, integration unit according to claim 1 is characterized in that evenly having 4 grooves on the absorbing piston periphery, matches with ratchet so that make ratchet pass this groove, also has a groove that cooperates with alignment pin on the absorbing piston, thereby prevents the rotation of absorbing piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91104982 CN1022197C (en) | 1991-07-26 | 1991-07-26 | Over-travel rotating drill rod and rebound vibration absorption integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91104982 CN1022197C (en) | 1991-07-26 | 1991-07-26 | Over-travel rotating drill rod and rebound vibration absorption integrated device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1057882A CN1057882A (en) | 1992-01-15 |
| CN1022197C true CN1022197C (en) | 1993-09-22 |
Family
ID=4906919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91104982 Expired - Fee Related CN1022197C (en) | 1991-07-26 | 1991-07-26 | Over-travel rotating drill rod and rebound vibration absorption integrated device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1022197C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104704187B (en) * | 2012-10-25 | 2017-08-08 | 哈里伯顿能源服务公司 | For the torque-transmitting mechanisms for the boring tool being drilled down into |
| CN104265168B (en) * | 2014-07-28 | 2016-08-17 | 西南石油大学 | Drill-bit type rotary guiding device is pointed in interior a kind of biasing |
| CN106224432B (en) * | 2016-08-31 | 2018-11-09 | 湖南长河机械有限公司 | A kind of down-the-hole air hammer impacting rebound buffering device |
| CN110410444B (en) * | 2019-07-22 | 2021-02-05 | 中国铁建重工集团股份有限公司 | Active impact receiving buffer device and impact equipment |
-
1991
- 1991-07-26 CN CN 91104982 patent/CN1022197C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1057882A (en) | 1992-01-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |