CN102747968A - Drill rod coupler for down-the-hole drill - Google Patents
Drill rod coupler for down-the-hole drill Download PDFInfo
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- CN102747968A CN102747968A CN2012102358426A CN201210235842A CN102747968A CN 102747968 A CN102747968 A CN 102747968A CN 2012102358426 A CN2012102358426 A CN 2012102358426A CN 201210235842 A CN201210235842 A CN 201210235842A CN 102747968 A CN102747968 A CN 102747968A
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Abstract
The invention discloses a drill rod coupler for a down-the-hole drill. The drill rod coupler comprises an upper body and a lower body which are respectively provided with a vent hole, a groove is arranged at the lower end of the upper body, a bump used for extending into the groove and then transferring the torque is arranged at the upper end of the lower body, a gap is left between the groove and the bump, and a centering airtight structure is arranged between the upper body and the lower body. The gap between the groove and the bump can be used for avoiding the bending of a drill rod in disturbance and reducing the fatigue breakage probability of the drill rod; compared with the prior art, after the coupler is adopted, the cheap drill rod can achieve the obvious effect of the expensive drill rod in the prior art, thus greatly lowering the construction cost; the centering airtight structure can play a role in transferring axial thrust when the drill rod is in drilling, and a role of air sealing under any circumstance, so that the sealing property of a chip removal air channel can be ensured, and high-pressure air can be used for dredging the blocking easily only by slightly lifting up the drill rod when the channel is blocked, so that the drill rod coupler is convenient and efficient to use.
Description
Technical field
The present invention relates to engineering rock drilling machinery field, particularly a kind of parts of rig.
Background technology
Rig is a kind of engineering machinery that is used for the rock-boring operation; Be usually used in explosion drilling operation and geological drilling operation; The large type drill carry is after on the digger arm; Have flexible, easy to use, the drilling efficiency advantages of higher of transfer, can effectively improve the operating efficiency of engineering construction, become the main flow equipment of engineering driller gradually.
The drilling rod of rig need be rotated motion and axial feed motion simultaneously when creeping into, drilling rod comes driven in rotation by motor and tooth case, and the tooth case is fixed on the planker that can move along drilling direction, simultaneously, and need be from drilling rod middle part feeding high pressure chip removal air.At present, for the sealing that satisfies drilling rod bonding strength and chip removal air duct etc., adopt is connected firmly between the output of drilling rod and tooth case, owing to geology rock mass Hardness Distribution inequality; Be complicated disturbance operating mode when causing rod boring, therefore, adopt hardwired structure to have following problem: the fracture of drilling rod easy fatigue; The load of tooth case is unstable to be damaged easily, and shorten application life, in case drilling rod stops up; Then need drilling rod is set level the back by the manual work mediation, workload is big, and efficient is low.Usually will adopt expensive high-strength drill pipe could keep working continuously of a period of time reluctantly, and the price of this type drilling rod is about every three or four thousand yuan, this has improved construction cost undoubtedly greatly.In recent years, also occurred the rig that some drilling rods are connected with tooth case clutch end employing shaft coupling on the market, but all there are deficiencies such as complex structure, poor reliability, damage easily, poor air-tightness in these shaft couplings.
To above-mentioned deficiency, need to explore a kind of shaft coupling of dependable performance, make it can adapt to the disturbance operating mode of drilling rod; Can satisfy the requirement of ventilation tightness again; To reduce the requirement of strength of rock drilling machine to drilling rod, prolong the application life of drilling rod and equipment, reduce use cost.
Summary of the invention
In view of this; The present invention provides a kind of down-the-hole drill drilling rod shaft coupling, and this shaft coupling adopts sphere centering hermetically-sealed construction, can adapt to the disturbance operating mode of drilling rod; The requirement of ventilation tightness can be satisfied again, the technical problem of existing drilling rod syndeton can be effectively solved drilling rod requirement height, poor air-tightness.
The present invention solves the problems of the technologies described above through following technological means:
Down-the-hole drill drilling rod shaft coupling of the present invention; Comprise the upper body and the following body that is used for the jointed rod tail end that are used to connect the rotary power output; All be provided with the air vent that is used to carry the chip removal air on said upper body and the following body along the drilling rod pivot center; The lower end of upper body is provided with groove; The upper end of following body is provided for stretching into the projection of transfer torque behind the groove, between the end face of said upper body and following body, all leave the gap between groove and the projection, between upper body and the following body centering airtight construction is set.
Further; Said centering airtight construction comprises the spherical groove that is arranged at the upper body lower end, is arranged at down the deep gouge of body upper end, with the chimeric centering hemisphere of spherical groove be arranged at the elastic body in the deep gouge; Planar ends and the deep gouge bottom of centering hemisphere withstood at said elastomeric two ends respectively, equal pore of setting and upper body and following body air vent formation blanket gas circulation road on said centering hemisphere and the elastic body.
Further, the planar ends of said centering hemisphere stretches in the deep gouge, is provided with the limited step that is used to withstand centering hemispherical plane end in the said deep gouge.
Further, said elastic body is processed by rubber.
Further; Also comprise the follower bolt assembly that is used to connect upper body and following body; Said follower bolt assembly comprises screw rod, nut, two servo-actuated spheroids and two tension springs; Screw rod is connected upper body and following body with nut, the screw vent outer end of upper body and following body is provided with the hemisphere groove, said two servo-actuated spheroids respectively with upper body and following body on the hemisphere groove cooperate; In said two tension springs one is arranged between the servo-actuated spheroid of screw head and upper body, and another is arranged between the servo-actuated spheroid of nut and following body.
Further, said tension spring is the dish spring.
Further, said servo-actuated spheroid is a hemisphere.
Further, said follower bolt assembly is at least two groups, and is uniformly distributed with around the shaft coupling axis.
Beneficial effect of the present invention: down-the-hole drill drilling rod shaft coupling of the present invention, comprise the upper body and the following body that is used for the jointed rod tail end that are used to connect the rotary power output, all be provided with the air vent that is used to carry the chip removal air on said upper body and the following body along the drilling rod pivot center; The lower end of upper body is provided with groove, and the upper end of following body is provided for stretching into the projection of transfer torque behind the groove, between the end face of said upper body and following body, leave the gap between groove and the projection; Between upper body and the following body centering airtight construction is set; The bending that gap between projection and the groove is produced in the time of can guaranteeing the drilling rod disturbance reduces greatly, reduces the probability of drilling rod fatigue fracture, also effectively reduces the requirement of construction to drilling rod; Than prior art; Adopting and using price behind the shaft coupling of the present invention is the effect that drilling rod about 400 yuan can reach 4000 yuan of left and right sides drilling rods of available technology adopting, and construction cost reduces greatly, in addition; End thrust in the time of can transmitting rod boring through the centering airtight construction; And the sealing of chip removal air duct when guaranteeing the drilling rod no-load, when passage takes place to stop up, only need drilling rod is mentioned a little; Pressure-air can be dredged stopping up at an easy rate, and is easy to use efficient.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
The specific embodiment
Below will combine accompanying drawing that the present invention is elaborated, as shown in the figure: the down-the-hole drill drilling rod shaft coupling of present embodiment comprises the upper body 1 and the following body 2 that is used for the jointed rod tail end that are used to connect the rotary power output; Be provided with the internal thread that is used to be connected on upper body 1 and the following body 2, all be provided with the air vent 3 that is used to carry the chip removal air along the drilling rod pivot center on said upper body 1 and the following body 2, the lower end of upper body 1 is provided with groove 1a; The upper end of following body 2 is provided for stretching into the projection 2a of transfer torque behind the groove 1a; Between the end face of said upper body 1 and following body 2, all leave the gap between groove 1a and the projection 2a, when the drilling rod disturbance, this gap can keep the degree of freedom of drilling rod tail end; Prevent drill pipe buckling; Greatly reduce the probability of the fatigue fracture of drilling rod, between upper body 1 and the following body 2 the centering airtight construction is set, make to be unlikely between the body up and down to break away from; Simultaneously, also can guarantee the sealing of chip removal air duct.
As the further improvement of technique scheme, said centering airtight construction comprises the spherical groove 4 that is arranged at upper body 1 lower end, the deep gouge 5 that is arranged at down body 2 upper ends, with the chimeric centering hemisphere 6 of spherical groove 4 be arranged at the elastic body 7 in the deep gouge 5, and the sphere contact can realize the centering effect; Can reach good sealing effectiveness again, can also when rod boring, transmit end thrust simultaneously, in addition; Hemisphere can adopt the steel ball line to be cut into, and a steel ball can be made two centering hemisphere, and stock utilization is high; Help controlling cost, the planar ends and deep gouge 5 bottoms of centering hemisphere 6 are withstood at the two ends of said elastic body 7 respectively, and the pore 8 that forms the blanket gas circulation road with upper body 1 and following body 2 air vents all is set on said centering hemisphere 6 and the elastic body 7; Elastic body is in compressive state all the time, can guarantee himself and centering hemisphere planar ends between sealing, himself with deep gouge bottom sealing, simultaneously; It applies elastic force to centering hemisphere makes centering hemisphere be close to spherical groove; Reach good sealing effectiveness, when drilling rod was mentioned, elastic body extended under the elastic force effect; Continue to withstand centering hemisphere; Guarantee tightness, compressed air can not lose pressure, is easy to the drilling rod mediation of stopping up.
Further improvement as technique scheme; The planar ends of said centering hemisphere 6 stretches in the deep gouge 5, is provided with the limited step 5a that is used to withstand centering hemisphere 6 planar ends in the said deep gouge 5, when creeping into; This limited step transmitter shaft prevents to damage by pressure elastic body to centripetal force.
As the further improvement of technique scheme, said elastic body 7 is processed by rubber, is easy to make, and cost is low.
As the further improvement of technique scheme, also comprise the follower bolt assembly that is used to connect upper body 1 and following body 2, said follower bolt assembly comprises screw rod 9, nut 10, two servo-actuated spheroids 11 and two tension springs 12; Screw rod 9 is connected upper body 1 and following body 2 with nut 10; The screw vent outer end of upper body 1 and following body 2 is provided with the hemisphere groove, said two servo-actuated spheroids 11 respectively with upper body 1 and following body 2 on the hemisphere groove cooperate, in said two tension springs 12 one is arranged between the servo-actuated spheroid of screw rod 9 heads and upper body 1; Another is arranged between the servo-actuated spheroid of nut 10 and following body 2; Through servo-actuated spheroid and tension spring structure, can guarantee when the drilling rod disturbance, when promptly descending body to rotate with respect to upper body; Screw rod stressed less all the time avoids screw rod crooked the damage to occur.
As the further improvement of technique scheme, said tension spring 12 is the dish spring, and load is big, and stroke is short, and requisite space is little, make up easy to usely, and maintenance changes the outfit easily, economic security property height.
As the further improvement of technique scheme, said servo-actuated spheroid 11 is a hemisphere, can adopt steel ball to be cut into two hemisphere equally, and production efficiency is high, and cost is low.
As the further improvement of technique scheme, said follower bolt assembly is at least two groups, and is uniformly distributed with around the shaft coupling axis, and present embodiment adopts 4 groups of bolt assemblies, and stress condition is good, and is not fragile.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. down-the-hole drill drilling rod shaft coupling; It is characterized in that: comprise upper body (1) that is used to connect the rotary power output and the following body (2) that is used for the jointed rod tail end; Said upper body (1) and following body (2) are gone up and all are provided with the air vent (3) that is used to carry the chip removal air along the drilling rod pivot center; The lower end of upper body (1) is provided with groove (1a); The upper end of following body (2) is provided for stretching into the projection (2a) of groove (1a) back transfer torque, between the end face of said upper body (1) and following body (2), all leave the gap between groove (1a) and the projection (2a), between upper body (1) and the following body (2) the centering airtight construction is set.
2. down-the-hole drill drilling rod shaft coupling according to claim 1; It is characterized in that: said centering airtight construction comprises the spherical groove (4) that is arranged at upper body (1) lower end, is arranged at down the deep gouge (5) of body (2) upper end, centering hemisphere (6) be arranged at deep gouge (5) the interior elastic body (7) chimeric with spherical groove (4); The planar ends and deep gouge (5) bottom of centering hemisphere (6) withstood at the two ends of said elastic body (7) respectively, and the pore (8) that forms the blanket gas circulation road with upper body (1) and following body (2) air vent all is set on said centering hemisphere (6) and the elastic body (7).
3. down-the-hole drill drilling rod shaft coupling according to claim 2 is characterized in that: the planar ends of said centering hemisphere (6) stretches in the deep gouge (5), is provided with the limited step (5a) that is used to withstand centering hemisphere (6) planar ends in the said deep gouge (5).
4. down-the-hole drill drilling rod shaft coupling according to claim 3 is characterized in that: said elastic body (7) is processed by rubber.
5. according to any described down-the-hole drill drilling rod shaft coupling of claim 1-4; It is characterized in that: also comprise the follower bolt assembly that is used to connect upper body (1) and following body (2); Said follower bolt assembly comprises screw rod (9), nut (10), two servo-actuated spheroids (11) and two tension springs (12); Screw rod (9) is connected upper body (1) and following body (2) with nut (10); The screw vent outer end of upper body (1) and following body (2) is provided with the hemisphere groove; Said two servo-actuated spheroids (11) respectively with upper body (1) and following body (2) on the hemisphere groove cooperate, in said two tension springs (12) one is arranged between the servo-actuated spheroid of screw rod (9) head and upper body (1), another is arranged between the servo-actuated spheroid of nut (10) and following body (2).
6. down-the-hole drill drilling rod shaft coupling according to claim 5 is characterized in that: said tension spring (12) is the dish spring.
7. down-the-hole drill drilling rod shaft coupling according to claim 6 is characterized in that: said servo-actuated spheroid (11) is a hemisphere.
8. down-the-hole drill drilling rod shaft coupling according to claim 7 is characterized in that: said follower bolt assembly is at least two groups, and is uniformly distributed with around the shaft coupling axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210235842.6A CN102747968B (en) | 2012-07-09 | 2012-07-09 | Drill rod coupler for down-the-hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210235842.6A CN102747968B (en) | 2012-07-09 | 2012-07-09 | Drill rod coupler for down-the-hole drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102747968A true CN102747968A (en) | 2012-10-24 |
| CN102747968B CN102747968B (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210235842.6A Expired - Fee Related CN102747968B (en) | 2012-07-09 | 2012-07-09 | Drill rod coupler for down-the-hole drill |
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| Country | Link |
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| CN (1) | CN102747968B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827802A (en) * | 2019-03-12 | 2019-05-31 | 北京铁城信诺工程检测有限公司 | Sand replacement method measures compactness with taking indigenous equipment |
| CN112324333A (en) * | 2020-10-22 | 2021-02-05 | 河北省水利工程局 | Construction method for horizontal directional crossing of complex pebble-gravel stratum by underground pipeline |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB960139A (en) * | 1961-11-28 | 1964-06-10 | Shell Int Research | Flexible pipe joint |
| US7063175B1 (en) * | 2004-06-16 | 2006-06-20 | Scott Kerstetter | Method and apparatus for retaining a down-hole fluid motor and bit assembly |
| CN201406996Y (en) * | 2009-04-03 | 2010-02-17 | 罗师竹 | Shallow underground piercing machine drill rod connector |
| CN101694151A (en) * | 2009-09-27 | 2010-04-14 | 北京市三一重机有限公司 | In-the-hole drill and vibration absorber thereof |
| CN201851033U (en) * | 2010-11-19 | 2011-06-01 | 鞍钢集团矿业公司 | Connector used for rotary drilling machine |
| CN202731768U (en) * | 2012-07-09 | 2013-02-13 | 重庆博山工程机械设备有限公司 | Drill rod coupling of down-the-hole drill |
-
2012
- 2012-07-09 CN CN201210235842.6A patent/CN102747968B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB960139A (en) * | 1961-11-28 | 1964-06-10 | Shell Int Research | Flexible pipe joint |
| US3168334A (en) * | 1961-11-28 | 1965-02-02 | Shell Oil Co | Flexible pipe joint |
| US7063175B1 (en) * | 2004-06-16 | 2006-06-20 | Scott Kerstetter | Method and apparatus for retaining a down-hole fluid motor and bit assembly |
| CN201406996Y (en) * | 2009-04-03 | 2010-02-17 | 罗师竹 | Shallow underground piercing machine drill rod connector |
| CN101694151A (en) * | 2009-09-27 | 2010-04-14 | 北京市三一重机有限公司 | In-the-hole drill and vibration absorber thereof |
| CN201851033U (en) * | 2010-11-19 | 2011-06-01 | 鞍钢集团矿业公司 | Connector used for rotary drilling machine |
| CN202731768U (en) * | 2012-07-09 | 2013-02-13 | 重庆博山工程机械设备有限公司 | Drill rod coupling of down-the-hole drill |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827802A (en) * | 2019-03-12 | 2019-05-31 | 北京铁城信诺工程检测有限公司 | Sand replacement method measures compactness with taking indigenous equipment |
| CN109827802B (en) * | 2019-03-12 | 2021-09-10 | 北京铁城检测认证有限公司 | Soil sampling equipment for measuring compactness by sand filling method |
| CN112324333A (en) * | 2020-10-22 | 2021-02-05 | 河北省水利工程局 | Construction method for horizontal directional crossing of complex pebble-gravel stratum by underground pipeline |
| CN112324333B (en) * | 2020-10-22 | 2022-08-02 | 河北省水利工程局 | Construction method for horizontal directional crossing of complex pebble-gravel stratum by underground pipeline |
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| Publication number | Publication date |
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| CN102747968B (en) | 2014-10-22 |
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Granted publication date: 20141022 Termination date: 20150709 |
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