CN203248068U - Middle and low pressure down-hole hammer with high efficiency - Google Patents
Middle and low pressure down-hole hammer with high efficiency Download PDFInfo
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- CN203248068U CN203248068U CN 201320269665 CN201320269665U CN203248068U CN 203248068 U CN203248068 U CN 203248068U CN 201320269665 CN201320269665 CN 201320269665 CN 201320269665 U CN201320269665 U CN 201320269665U CN 203248068 U CN203248068 U CN 203248068U
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- drill bit
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- valve
- outer tube
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Abstract
A middle and low pressure down-hole hammer with high efficiency comprises a rear joint, an inverted valve, an inverted valve cover, a distribution rod, a piston, an inner cylinder, an outer sleeve, a front joint, a guide sleeve and a drill bit, wherein the inverted valve is a single-way valve with a valve base and a spring; the piston is long and thin with a pore canal; the distribution rod is integrated with an air inlet base; the distribution rod can not only guide and support the inverted valve installation, but can also perform distributing action with a cylinder body and the piston; and the rear joint, the distribution rod and the inner cylinder are connected together via a lateral pin. The distribution rod is integrated with the inverted valve base; a non-valve distribution structure is employed; innovative design of piston with larger diameter difference is adapted; a large end of the piston is provided with a large diversion port; and by the above structure, high-pressure air can pass quickly, thereby ensuring swift conversion between high-pressure side and low-pressure side of rear air chamber.
Description
Technical field
The utility model relates to a kind of pneumatic impact equipment, relates in particular to low air-pressure down-the-hole hammer in a kind of hanging lock type.
Background technology
Down-the-hole air hammer is a kind of typical pneumatic impact equipment, and it is the drilling tool of down-the-hole drill, is the operating mechanism that rig is implemented boring.This equipment is mainly used in Drilling diameter 65-305mm, hole depth 60m driling explosion hole.Its mesoporous is that 65-105mm left and right sides bore operation is generally all finished by mesolow down-the-hole drilling tool.
At present, the low air-pressure down-the-hole hammer characteristics of using on the market are provided with valve block in being, the commutation by valve block realizes that the forward and backward air chamber that enters impactor that compressed air replaces finishes the distribution action, make finally that piston is capable to become reciprocal motion.As shown in Figure 1, it is comprised of 18 parts, joint, 2-non retern valve, spring, 4-rubber ring, 5-valve gap, 6-valve block, 7-guide pipe, 8-distribution bar, 9-inner casing, 10-piston, 11-outer tube, 12-fairlead, 3-obstruction, 14-spring, 15-rubber bar, 16-lateral pin, 17-front connector, 18-drill bit behind the 1-are the parts that impactor is connected with drilling rod with the rear joint 1 of rectangular thread.Non retern valve 2 is to prevent that magmatic water from flowing into the one way valve of impactor and drilling rod, and spring 3 is contained in the check valve gap 5.1 of valve gap and rear joint are provided with the vibration isolation rubber circle, and outer tube 11 is realized the distribution action of piston movement together with inner casing 9, distribution bar 8, fairlead 17, piston 10.Being provided with central duct elongated shape piston is a part that directly compressed air energy is converted to mechanical movement kinetic energy, and by it this kinetic energy is passed to drill bit 18 by the mode of colliding, so piston is a very crucial part.16 of lateral pins are for preventing that drill bit 18 from coming off.Obstruction 13, spring 14, rubber bar 15, lateral pin 16 consist of the lateral pin stop device together, and front connector 17 is to drive drill bit to rotate the front connector that reaches in upper slip, and fairlead 12 is used for fitting piston and carries out distribution.
Above-mentioned valveless twin-tub type down-the-hole air hammer has following disadvantages: 1, between valve seat and the rear joint rubber ring is housed, self just can absorb certain energy when impactor is worked, more outstanding is the aging distortion of rubber after impactor work a period of time, will produce and jump and seriously influence quality of fit between each parts, thereby reduced operating efficiency, and shortened the working life of impactor.2, the thin and long structure of inner casing makes its processing more complicated, and cost of manufacture is high; And the inner casing two ends are in stress all the time.Because it is so that consumable accessory is one of key point that affects impactor application life and stability.3, piston moves back and forth in inner casing all the time, has added the wearing and tearing of inner casing huge.4, more intake and exhaust road is arranged, thereby cause larger atmospheric pressure lost.5, be provided with the valve block fault rate in high.6, being subjected to inner casing is the long part of thin-walled and stressing influence, its applicable blast scope less (0.5-1.2MPa).
Summary of the invention
The technical problems to be solved in the utility model provides a kind of efficient mesolow down-the-hole air hammer, and distribution bar and check valve seat are integrated, simple in structure, can realize locating, the function of vibration damping, air inlet, reliable and stable during work; Piston and inner casing contact site reduce, and inner casing is more wear-resisting, and the impactor working pressure range is wide, can work in 5-14 kilograms per centimeter, 2 scopes.
The purpose of this utility model is achieved in that
A kind of efficient mesolow down-the-hole air hammer, it comprises rear joint, non retern valve, the check valve gap, the distribution bar, piston, inner casing, outer tube, front connector, fairlead, drill bit, described non retern valve is one way valve, it has valve seat and spring, described piston is the elongated shape piston that has the duct, described distribution bar and air inlet seat are integrated, except providing the guide support for the non retern valve assembling, same cylinder body also, piston is realized the distribution action of piston movement together, rear joint, distribution bar and inner casing link together by lateral pin, piston is that direct power conversion with Compressed Gas is a part of mechanical movement kinetic energy, and by it this kinetic energy by the collision mode pass to drill bit, piston moves in inner casing and outer tube all the time.
Above-mentioned front connector is the snap ring-type front connector, and corresponding drill bit is the snap ring-type drill bit, is provided with between front connector and the drill bit the open form snap ring, and its effect is for preventing coming off of drill bit.
Above-mentioned front connector is the ball-type front connector, and corresponding drill bit is the ball-type drill bit, is provided with ball, pin and collar between front connector and the drill bit.
Between above-mentioned rear joint and outer tube, be provided with the fillet of screw.
Between above-mentioned check valve gap and rear joint, be provided with the first sealing ring; Between fairlead and outer tube, be provided with the second sealing ring; Between snap ring and front connector, be provided with the 3rd sealing ring.
Between above-mentioned check valve gap and rear joint, be provided with the first sealing ring; Between fairlead and outer tube, be provided with the second sealing ring.
Be provided with back-up ring at above-mentioned fairlead and the axial contact surface of outer tube.
The utility model has been obtained following technique effect:
1, air distribution system is reasonable in design
Adopt piston and inside and outside cylinder to cooperate the distribution principle, the gas booking groove that relative motion by piston causes inside and outside cylinder to be provided with consists of the action of opening or closing, thereby make air chamber before and after the entering that gases at high pressure replace, therefore, saved valve block, strengthen the stability that impactor is done, avoided the misoperation of distribution.
2, application is stronger
A, piston adopt the design of diameter difference innovation formula, have greatly increased system's gas chamber volume, make its preferably in work under the low blast operating mode, specific aim is stronger (can be in 5-14 kilograms per centimeter
2Work in the scope).
The control that the design of b, impactor is strict complete assembly length, with respect to the traditional product contraction in length 1/3rd, be specially adapted to be not easy to the underground operating mode of main equipment work.
3, structural design of fittings is more reasonable
A, distribution bar and valve seat are the integral type structure, and the distribution bar dwindled diameter of axle ratio, are easy to processing.Distribution bar, inner casing and rear joint connect as one by lateral pin.B, the large end cylindrical of rear joint and outer tube endoporus are taked little matched in clearance, connect by the fillet of screw again, have guaranteed high quality of fit.C, the large end of piston are provided with large fillet, so that gases at high pressure pass through rapidly.
4, system's gas circuit is reasonable in design
System's distribution is the no-valve type structure, and gas circuit is unobstructed, without the Zigzag type gas circuit, greatly improves pneumatic efficiency, reduces atmospheric pressure lost.No-valve type structure distribution action is more reliable and stable, error-free motion.
5, impactor high efficiency
Impactor has reasonably been adjusted quality and the impulse stroke of piston, frequency of impact and the single-impact energy of impactor have been improved, thereby can realize in various rock stratum the work of " high frequency, high energy ", improve operating efficiency (efficient has improved 20%～30% by contrast).
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of prior art;
Fig. 2 is the structural representation of embodiment 1 of the present utility model;
Fig. 3 is the structural representation of embodiment 2 of the present utility model.
The specific embodiment
Embodiment 1
As shown in Figure 2, a kind of efficient mesolow down-the-hole air hammer, it comprises rear joint 1, non retern valve 6, check valve gap 2, distribution bar 7, piston 10, inner casing 9, outer tube 11, front connector 17, fairlead 16, drill bit 18, described non retern valve is one way valve, it has valve seat and spring 5, described piston is the elongated shape piston that has the duct, it is characterized in that: described distribution bar and air inlet seat are integrated, except providing the guide support for the non retern valve assembling, same cylinder body also, piston is realized the distribution action of piston movement together, rear joint, distribution bar and inner casing link together by lateral pin 8, piston is that direct power conversion with Compressed Gas is a part of mechanical movement kinetic energy, and by it this kinetic energy by the collision mode pass to drill bit, piston moves in inner casing and outer tube all the time.Described front connector is the snap ring-type front connector, and corresponding drill bit is the snap ring-type drill bit, is provided with between front connector and the drill bit open form snap ring 14, and its effect is for preventing coming off of drill bit.
Between described check valve gap and rear joint, be provided with the first sealing ring 3; Between fairlead and outer tube, be provided with the second sealing ring 13; Between snap ring and front connector, be provided with the 3rd sealing ring 15.Between described check valve gap and rear joint, be provided with the first sealing ring 3; Between fairlead and outer tube, be provided with the second sealing ring 13.The preferred O RunddichtringO of above-mentioned sealing ring.Be provided with back-up ring 12 at described fairlead and the axial contact surface of outer tube.Between described rear joint and outer tube, be provided with the fillet of screw 4.
Rear joint 1 with rectangular thread is the parts that connect impactor and drilling rod.Non retern valve 6 is to prevent that magmatic water from flowing into the one way valve of impactor and drilling rod, and distribution bar 7 and air inlet seat are (namely the making a global shape) that is integrated, and except compressed air is introduced the cylinder body, also same cylinder body, piston are realized the distribution action of piston movement together.Piston 10 is for having the elongated shape piston in duct, it is that direct power conversion with Compressed Gas is a part of mechanical movement kinetic energy, and by it this kinetic energy by the collision mode pass to drill bit 18, piston 10 moves in inner casing 9 inner casings and outer tube 11 outer tubes all the time.Fairlead 16 is the fairleads that play the distribution effect with piston.In low blast in this is novel, refer generally to 5-14 kilograms per centimeter
2
Such as Fig. 3, itself and embodiment 1 distinguish and are, described front connector is the ball-type front connector, and corresponding drill bit is the ball-type drill bit, is provided with ball 20, pin 21 and collar 19 between front connector and the drill bit.Front connector 19 two ends are respectively equipped with four balls 20 and four pins 21, and ball 20 is to prevent that coming off of drill bit, pin 21 from driving drill bit and rotating transmitting torque with impactor.
Operating principle of the present utility model is as follows:
For starting impactor, must transfer first impactor.When drill bit contacts with rock and jack-up piston when being in position shown in Figure 2, start preparation and namely come to an end.
Gases at high pressure Po by introduce in rear joint hollow duct 22 backs down non retern valve 6, through after duct 31 on duct 30, the joint whole body, outer tube 11 inwalls and the annular chamber 23 of inner casing 9 outer walls formation, the interior casing wall, arrive front air chamber 24.Gases at high pressure enter front air chamber 24,26 and rear gas chamber 27 by what replace here.
When return began, piston was in position shown in Figure 2, and the gases at high pressure in the annular chamber 22 enter front air chamber 25 pushing pistons motion through front air chamber 24, process piston body surface.In the motion of piston return, when circular passage 32 was closed, front air chamber 25 air inlets stopped, and the gases at high pressure in the forward air chamber of piston expand and continue to move upward, and after piston impact end and fairlead disengagement, front air chamber 25 gases are at the bottom of bit central hole 31 drains into the hole.When piston began the return motion, the gas P of rear gas chamber 27 escaped at the bottom of the hole through piston centre porosity 30, bit central pore 29, and back pressure resistance suffered when making piston movement is very little; When distribution bar microcephaly began to enter the cooperation of piston formation, the return motion of piston was compressed the gas of rear gas chamber 27; When the large end motion of piston to forming opening with the interior inside wall of cylinder, gases at high pressure enter rear gas chamber 27 through annular chamber 23, front air chamber 24.Because the piston movement effect of inertia, piston will slide a segment distance, make piston stop the return motion until enter the gases at high pressure generation pressure of rear gas chamber 27.
During the piston stroke motion, piston moves to the opening turn-off transient of the large end of piston and the formation of the interior inside wall of cylinder under the promotion of gases at high pressure, the passage that gases at high pressure enter rear gas chamber is blocked, piston travels forward by gas expansion, after piston center hole and distribution bar lower end break away from, rear gas chamber's gas through 28,29 drain into the hole at the bottom of.This moment, the Piston knocking bit afterbody was finished stroke movement.When piston began stroke movement, the gas of front air chamber 25 continued at the bottom of bit central hole 31 is discharged to the hole; When piston and fairlead form when cooperating, the gas of front air chamber begins compression, and piston moves to connection arc groove 32 always, and gases at high pressure enter into front air chamber 25, have finished the distribution process.
Claims (7)
1. efficient mesolow down-the-hole air hammer, it comprises rear joint (1), non retern valve (6), check valve gap (2), distribution bar (7), piston (10), inner casing (9), outer tube (11), front connector (17), fairlead (16), drill bit (18), described non retern valve is one way valve, it has valve seat and spring (5), described piston is the elongated shape piston that has the duct, it is characterized in that: described distribution bar and air inlet seat are integrated, except providing the guide support for the non retern valve assembling, same cylinder body also, piston is realized the distribution action of piston movement together, rear joint, distribution bar and inner casing link together by lateral pin (8), piston is that direct power conversion with Compressed Gas is a part of mechanical movement kinetic energy, and by it this kinetic energy by the collision mode pass to drill bit, piston moves in inner casing and outer tube all the time.
2. efficient mesolow down-the-hole air hammer according to claim 1, it is characterized in that: described front connector is the snap ring-type front connector, corresponding drill bit is the snap ring-type drill bit, is provided with between front connector and the drill bit open form snap ring (14), and its effect is for preventing coming off of drill bit.
3. efficient mesolow down-the-hole air hammer according to claim 1, it is characterized in that: described front connector is the ball-type front connector, corresponding drill bit is the ball-type drill bit, is provided with ball (20), pin (21) and collar (19) between front connector and the drill bit.
4. it is characterized in that: between described rear joint and outer tube, be provided with the fillet of screw (4) according to claim 1 and 2 or 3 described efficient mesolow down-the-hole air hammers.
5. efficient mesolow down-the-hole air hammer according to claim 1 and 2 is characterized in that: be provided with the first sealing ring (3) between described check valve gap and rear joint; Between fairlead and outer tube, be provided with the second sealing ring (13); Between snap ring and front connector, be provided with the 3rd sealing ring (15).
6. it is characterized in that: between described check valve gap and rear joint, be provided with the first sealing ring (3) according to claim 1 or 3 described efficient mesolow down-the-hole air hammers; Between fairlead and outer tube, be provided with the second sealing ring (13).
7. it is characterized in that: be provided with back-up ring (12) at described fairlead and the axial contact surface of outer tube according to claim 1 and 2 or 3 described efficient mesolow down-the-hole air hammers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320269665 CN203248068U (en) | 2013-05-17 | 2013-05-17 | Middle and low pressure down-hole hammer with high efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320269665 CN203248068U (en) | 2013-05-17 | 2013-05-17 | Middle and low pressure down-hole hammer with high efficiency |
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| Publication Number | Publication Date |
|---|---|
| CN203248068U true CN203248068U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320269665 Expired - Lifetime CN203248068U (en) | 2013-05-17 | 2013-05-17 | Middle and low pressure down-hole hammer with high efficiency |
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| Country | Link |
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| CN (1) | CN203248068U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277043A (en) * | 2013-05-17 | 2013-09-04 | 宜昌市五环钻机具有限责任公司 | Efficient medium-low-pressure down-hole hammer |
-
2013
- 2013-05-17 CN CN 201320269665 patent/CN203248068U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277043A (en) * | 2013-05-17 | 2013-09-04 | 宜昌市五环钻机具有限责任公司 | Efficient medium-low-pressure down-hole hammer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131023 |