CN202731768U - Drill rod coupling of down-the-hole drill - Google Patents
Drill rod coupling of down-the-hole drill Download PDFInfo
- Publication number
- CN202731768U CN202731768U CN 201220329677 CN201220329677U CN202731768U CN 202731768 U CN202731768 U CN 202731768U CN 201220329677 CN201220329677 CN 201220329677 CN 201220329677 U CN201220329677 U CN 201220329677U CN 202731768 U CN202731768 U CN 202731768U
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- upper body
- lower body
- drilling rod
- centering
- groove
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Abstract
The utility model discloses a drill rod coupling of a down-the-hole drill. The drill rod coupling comprises an upper body and a lower body, wherein vent holes are formed in both the upper body and the lower body; a groove is formed at the lower end of the upper body; a bump for extending into the groove and transmitting torque is arranged at the upper end of the lower body; a gap is reserved 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 bump and the groove can avoid bending of a drill rod in disturbance and reduce the probability of fatigue break of the drill rod; relative to the prior art, after the drill rod coupling is adopted, the drill rod with the price of about 400 yuan can be used to obtain the effect of the drill rod with the price of about 4000 yuan in the prior art, so that the construction cost is greatly reduced; and the centering airtight structure has the effects of transmitting axial pushing force and sealing air under any situation when the drill rod is in operation, so that the sealing property of a chip removal air channel is guaranteed, the high-pressure air can easily remove blockage by slightly lifting up the drill rod when the channel is blocked, and the operation is convenient and efficient.
Description
Technical field
The utility model relates to engineering rock drilling machinery field, particularly a kind of parts of rig.
Background technology
Rig is a kind of engineering machinery 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, has flexible, easy to use, the drilling efficiency advantages of higher of transfer, can Effective Raise the operating efficiency of engineering construction, become gradually the main flow equipment of engineering driller.
The drilling rod of rig need be rotated motion and axial feed motion simultaneously when creeping into, drilling rod drives rotation by motor and tooth case, and the tooth case is fixed on the planker that can move along drilling direction, simultaneously, need to pass into high pressure chip removal air from the drilling rod middle part.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, because geology rock hardness skewness, for complicated disturbance operating mode, therefore, adopt hardwired structure to have following problem: the easy fatigue fracture of drilling rod when causing rod boring, the unstable easy damage of tooth case load, shorten application life, in case drilling rod stops up, then needs drilling rod is set level rear by artificial dredging, workload is large, and efficient is low.Usually will adopt expensive high-strength drill pipe could keep reluctantly working continuously of a period of time, and the price of this class drilling rod is about every three or four thousand yuan, this has improved construction cost undoubtedly greatly.In recent years, the rig that some drilling rods are connected with tooth case clutch end employing shaft coupling also occurred on the market, but all there are the deficiencies such as complex structure, poor reliability, easily damage, poor air-tightness in these shaft couplings.
For 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 again the requirement of ventilation tightness, to reduce rock drilling machine to the requirement of strength of drilling rod, prolong the application life of drilling rod and equipment, reduce use cost.
The utility model content
In view of this, the utility model provides a kind of down-the-hole drill drilling rod shaft coupling, this shaft coupling adopts the spherical centering hermetically-sealed construction, the disturbance operating mode that can adapt to drilling rod, can satisfy again ventilation tightness requirement, can solve effectively that existing drilling rod syndeton is high to the drilling rod requirement, the technical problem of poor air-tightness.
The utility model solves the problems of the technologies described above by following technological means:
Down-the-hole drill drilling rod shaft coupling of the present utility model, comprise for the upper body that connects the rotary power output and be used for the lower body of jointed rod tail end, all be provided with air vent for delivery of the chip removal air along the drilling rod pivot center on described upper body and the lower body, the lower end of upper body arranges groove, the upper end of lower body is provided for stretching into the projection of transmitting torque behind the groove, between the end face of described upper body and lower body, all leave the gap between groove and the projection, between upper body and the lower body centering airtight construction is set.
Further, described centering airtight construction comprises the spherical groove that is arranged at the upper body lower end, is arranged at the deep gouge of lower body upper end, with the chimeric centering hemisphere of spherical groove be arranged at elastic body in the deep gouge, planar ends and the deep gouge bottom of centering hemisphere withstood respectively at described elastomeric two ends, equal pore of setting and upper body and lower body air vent formation blanket gas circulation road on described centering hemisphere and the elastic body.
Further, the planar ends of described centering hemisphere stretches in the deep gouge, is provided with in the described deep gouge be used to the limited step that withstands centering hemispherical plane end.
Further, described elastic body is made by rubber.
Further, also comprise for the follower bolt assembly that connects upper body and lower body, described follower bolt assembly comprises screw rod, nut, two servo-actuated spheroids and two tension springs, screw rod is connected upper body and lower body with nut, the screw vent outer end of upper body and lower body is provided with the hemisphere groove, described two servo-actuated spheroids cooperate with hemisphere groove on upper body and the lower body respectively, in described 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 lower body.
Further, described tension spring is the dish spring.
Further, described servo-actuated spheroid is hemisphere.
Further, described follower bolt assembly is at least two groups, and uniform around the shaft coupling axis.
The beneficial effects of the utility model: down-the-hole drill drilling rod shaft coupling of the present utility model, comprise for the upper body that connects the rotary power output and be used for the lower body of jointed rod tail end, all be provided with air vent for delivery of the chip removal air along the drilling rod pivot center on described upper body and the lower body, the lower end of upper body arranges groove, the upper end of lower body is provided for stretching into the projection of transmitting torque behind the groove, between the end face of described upper body and lower body, leave the gap between groove and the projection, between upper body and the lower body centering airtight construction is set, the bending that gap between projection and the groove produces in the time of can guaranteeing the drilling rod disturbance reduces greatly, reduce the probability of drilling rod fatigue fracture, also effectively reduce construction to the requirement of drilling rod, than prior art, adopting and using price behind the shaft coupling of the present utility model is the effect that drilling rod about 400 yuan can reach 4000 yuan of left and right sides drilling rods of available technology adopting, construction cost reduces greatly, in addition, end thrust in the time of can transmitting rod boring by the centering airtight construction, and the sealing of chip removal air duct when guaranteeing the drilling rod no-load, when passage occurs to stop up, only need drilling rod is mentioned a little, pressure-air can will stop up dredging at an easy rate, and is easy to use efficient.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1.
The specific embodiment
Below with reference to accompanying drawing the utility model is elaborated, as shown in the figure: the down-the-hole drill drilling rod shaft coupling of the present embodiment, comprise for the upper body 1 that connects the rotary power output and be used for the lower body 2 of jointed rod tail end, be provided with on upper body 1 and the lower body 2 for the internal thread that connects, all be provided with air vent 3 for delivery of the chip removal air along the drilling rod pivot center on described upper body 1 and the lower body 2, the lower end of upper body 1 arranges groove 1a, the upper end of lower body 2 is provided for stretching into the projection 2a of transmitting torque behind the groove 1a, between the end face of described upper body 1 and lower 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 lower 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 further improvement in the technical proposal, described centering airtight construction comprises the spherical groove 4 that is arranged at upper body 1 lower end, be arranged at the deep gouge 5 of lower body 2 upper ends, with the chimeric centering hemisphere 6 of spherical groove 4 be arranged at elastic body 7 in the deep gouge 5, sphere-contact can be realized certralizing ability, can reach good sealing effectiveness again, simultaneously can also be when rod boring transferring axial thrust, in addition, hemisphere can adopt the steel ball line to be cut into, a steel ball can be made two centering hemisphere, stock utilization is high, be conducive to control cost, planar ends and deep gouge 5 bottoms of centering hemisphere 6 are withstood respectively at the two ends of described elastic body 7, the pore 8 that forms the blanket gas circulation road with upper body 1 and lower body 2 air vents all is set on described 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, the sealing of himself and deep gouge bottom, simultaneously, it applies elastic force to centering hemisphere makes centering hemisphere be close to spherical groove, reach good sealing effectiveness, when drilling rod is mentioned, elastic body extends under the elastic force effect, continue to withstand centering hemisphere, guarantee tightness, compressed air can not lose pressure, is easy to the drilling rod dredging of will stop up.
As further improvement in the technical proposal, the planar ends of described centering hemisphere 6 stretches in the deep gouge 5, is provided with in the described deep gouge 5 be used to the limited step 5a that withstands centering hemisphere 6 planar ends, when creeping into, this limited step transmitter shaft prevents from damaging by pressure elastic body to centripetal force.
As further improvement in the technical proposal, described elastic body 7 is made by rubber, is easy to make, and cost is low.
As further improvement in the technical proposal, also comprise for connecting the follower bolt assembly of upper body 1 with lower body 2, described follower bolt assembly comprises screw rod 9, nut 10, two servo-actuated spheroids 11 and two tension springs 12, screw rod 9 is connected with nut and is connected upper body 1 and lower body 2, the screw vent outer end of upper body 1 and lower body 2 is provided with the hemisphere groove, described two servo-actuated spheroids 11 cooperate with hemisphere groove on upper body 1 and the lower body 2 respectively, in described 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 lower body 2, by servo-actuated spheroid and tension spring structure, can guarantee when the drilling rod disturbance, when namely descending body to rotate with respect to upper body, screw rod stressed all the time less avoids screw rod crooked the damage to occur.
As further improvement in the technical proposal, described tension spring 12 is the dish spring, and load is large, and stroke is short, and requisite space is little, is used in combination conveniently, and maintenance changes the outfit easily, and economy and security is high.
As further improvement in the technical proposal, described servo-actuated spheroid 11 is hemisphere, can adopt equally steel ball to be cut into two hemisphere, and production efficiency is high, and cost is low.
As further improvement in the technical proposal, described follower bolt assembly is at least two groups, and uniform around the shaft coupling axis, and the 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 the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (8)
1. down-the-hole drill drilling rod shaft coupling, it is characterized in that: comprise for the upper body (1) that connects the rotary power output and be used for the lower body (2) of jointed rod tail end, described upper body (1) and lower body (2) are upper all to be provided with air vent (3) for delivery of the chip removal air along the drilling rod pivot center, the lower end of upper body (1) arranges groove (1a), the upper end of lower body (2) is provided for stretching into the projection (2a) of the rear transmitting torque of groove (1a), between the end face of described upper body (1) and lower body (2), all leave the gap between groove (1a) and the projection (2a), between upper body (1) and the lower 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: described centering airtight construction comprises the spherical groove (4) that is arranged at upper body (1) lower end, be arranged at the deep gouge (5) of lower body (2) upper end, with the chimeric centering hemisphere (6) of spherical groove (4) be arranged at elastic body (7) in the deep gouge (5), planar ends and deep gouge (5) bottom of centering hemisphere (6) withstood respectively at the two ends of described elastic body (7), and the pore (8) that forms the blanket gas circulation road with upper body (1) and lower body (2) air vent all is set on described centering hemisphere (6) and the elastic body (7).
3. down-the-hole drill drilling rod shaft coupling according to claim 2, it is characterized in that: the planar ends of described centering hemisphere (6) stretches in the deep gouge (5), is provided with in the described deep gouge (5) be used to the limited step (5a) that withstands centering hemisphere (6) planar ends.
4. down-the-hole drill drilling rod shaft coupling according to claim 3, it is characterized in that: described elastic body (7) is made by rubber.
5. the described down-the-hole drill drilling rod of any one shaft coupling according to claim 1-4, it is characterized in that: also comprise for connecting the follower bolt assembly of upper body (1) with lower body (2), described follower bolt assembly comprises screw rod (9), nut (10), two servo-actuated spheroids (11) and two tension springs (12), screw rod (9) is connected 10 with nut) connection upper body (1) and lower body (2), the screw vent outer end of upper body (1) and lower body (2) is provided with the hemisphere groove, described two servo-actuated spheroids (11) cooperate with hemisphere groove on upper body (1) and the lower body (2) respectively, in described two tension springs (12) one is arranged between the servo-actuated spheroid of screw rod (9) head and upper body (1), and another is arranged between the servo-actuated spheroid of nut (10) and lower body (2).
6. down-the-hole drill drilling rod shaft coupling according to claim 5, it is characterized in that: described tension spring (12) is the dish spring.
7. down-the-hole drill drilling rod shaft coupling according to claim 6, it is characterized in that: described servo-actuated spheroid (11) is hemisphere.
8. down-the-hole drill drilling rod shaft coupling according to claim 7, it is characterized in that: described follower bolt assembly is at least two groups, and uniform around the shaft coupling axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329677 CN202731768U (en) | 2012-07-09 | 2012-07-09 | Drill rod coupling of down-the-hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329677 CN202731768U (en) | 2012-07-09 | 2012-07-09 | Drill rod coupling of down-the-hole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202731768U true CN202731768U (en) | 2013-02-13 |
Family
ID=47657480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220329677 Withdrawn - After Issue CN202731768U (en) | 2012-07-09 | 2012-07-09 | Drill rod coupling of down-the-hole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202731768U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747968A (en) * | 2012-07-09 | 2012-10-24 | 重庆博山工程机械设备有限公司 | Drill rod coupler for down-the-hole drill |
| CN103742082A (en) * | 2013-12-20 | 2014-04-23 | 安徽铜冠机械股份有限公司 | Drill pipe coupler for raise boring machine |
| CN111894482A (en) * | 2020-07-29 | 2020-11-06 | 西安石油大学 | Drill rod connecting structure |
| CN113669026A (en) * | 2021-09-14 | 2021-11-19 | 长安大学 | Rotary drilling coring and drilling tool softening device |
-
2012
- 2012-07-09 CN CN 201220329677 patent/CN202731768U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747968A (en) * | 2012-07-09 | 2012-10-24 | 重庆博山工程机械设备有限公司 | Drill rod coupler for down-the-hole drill |
| CN102747968B (en) * | 2012-07-09 | 2014-10-22 | 重庆博山工程机械设备有限公司 | Drill rod coupler for down-the-hole drill |
| CN103742082A (en) * | 2013-12-20 | 2014-04-23 | 安徽铜冠机械股份有限公司 | Drill pipe coupler for raise boring machine |
| CN111894482A (en) * | 2020-07-29 | 2020-11-06 | 西安石油大学 | Drill rod connecting structure |
| CN113669026A (en) * | 2021-09-14 | 2021-11-19 | 长安大学 | Rotary drilling coring and drilling tool softening device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130213 Effective date of abandoning: 20141022 |
|
| RGAV | Abandon patent right to avoid regrant |