CN201924835U - Anti-impact screw drill - Google Patents
Anti-impact screw drill Download PDFInfo
- Publication number
- CN201924835U CN201924835U CN2011200001932U CN201120000193U CN201924835U CN 201924835 U CN201924835 U CN 201924835U CN 2011200001932 U CN2011200001932 U CN 2011200001932U CN 201120000193 U CN201120000193 U CN 201120000193U CN 201924835 U CN201924835 U CN 201924835U
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- CN
- China
- Prior art keywords
- transmission shaft
- power transmission
- cushion collar
- described power
- convex shoulder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses an anti-impact screw drill, which comprises a screw drill shell. A transmission shaft is rotatably mounted in the screw drill shell; the lower end of the transmission shaft extends out of the screw drill shell; a cushion collar provided with a drill bit is sleeved at the lower end of the transmission shaft; the transmission shaft and the cushion collar are in spline fit; a cushion limit device for limiting the cushion collar on axial movement range is arranged on the transmission shaft; an axial elastic cushioning device is arranged between the transmission shaft and the cushion collar; and a sealing device is arranged at the position of the fit clearance between the transmission shaft and the cushion collar. By the aid of the axial elastic cushioning device arranged between the transmission shaft and the cushion collar, bit jumping and impact shock are relieved or eliminated in drilling to a bit jumping bottom layer, damage to the drill and the drill but is decreased, connection of drill collars and intactness of well walls are protected, the integral service life of the drill is prolonged, well drilling safety is enhanced, and well drilling speed is increased.
Description
Technical field
The utility model relates to the drilling equipment field, relates in particular to a kind of helicoid hydraulic motor.
Background technology
Drilling tool and drill bit are depressed at wammel in the drilling well, creep under the situation by the big torque of drilling tool output, and particularly rock bit is to creep into by the continuous rock crushing of cutter teeth, have just produced vibrations and impact in carbon stone broken moment that is stressed.Performance particularly outstanding often in the firm relatively poor bottom of big and tool in layer of gravel or hardness, even the bouncing of drilling tool phenomenon appears.If bouncing of drilling tool can produce the resonance effect, thousands of meters drill rod boring tool is beated together, very big to drilling rod, drilling tool, drill bit destructive power.The vibrations meeting causes bigger destructive power to the borehole wall, and it is fast to cave in.Fall fast accumulation in a large number and can produce down-hole accidents such as bit freezing.
Existing as shown in Figure 4 helicoid hydraulic motor holds mainly and bears drilling pressure by the string bearing.The string bearing is made up of interior steel ring 12, outer rim 13 and steel ball 14, and steel ball 14 rolls in the track of interior steel ring 12 and outer rim 13 at work, and steel ball 14 contacts with interior steel ring 12, outer rim 13 dotted lines.Steel ball 14 is worked under interior steel ring 12, outer rim 13 interact up and down, is bearing bigger pressure and shearing force.The impact failure that is subjected in the work has influenced application life greatly.
The universal joint infringement that is hit is bigger equally, impacts the damage cause petal and steel ball easily, has reduced normal application life.Also easily because impact endurance test shock takes place loosening and opens button, each junction button of drilling tool falls the well accident.
The utility model content
Technical problem to be solved in the utility model provides a kind of be used for alleviating or eliminating bouncing of drilling tool and impact endurance test shock when the bouncing of drilling tool bottom creeps into; reduce the damage of drilling tool, drill bit; the protection connection of drill collar and the borehole wall intact; improve the whole service life of drilling tool; increase drilling safety, improve the shock resistance helicoid hydraulic motor of bit speed.
For solving the problems of the technologies described above, the technical solution of the utility model is: the shock resistance helicoid hydraulic motor, comprise the screw drill shell body, be rotatablely equipped with power transmission shaft in the described screw drill shell body, described screw drill shell body is stretched out in the lower end of described power transmission shaft, the bottom of described power transmission shaft is set with the cushion collar that drill bit is installed, be spline fitted between described power transmission shaft and the described cushion collar, described power transmission shaft is provided with the buffering stop block of the described cushion collar shaft orientation moving range of restriction, be provided with the axial elasticity buffer between described power transmission shaft and the described cushion collar, the fit clearance place of described power transmission shaft and described cushion collar is provided with sealing device.
As optimized technical scheme, described cushion collar comprises the buffering body, and the lower end fixed installation of described buffering body is useful on the crossover sub that drill bit is installed.
As optimized technical scheme, described axial elasticity buffer comprises the elastomeric element that is sleeved on the described power transmission shaft, described power transmission shaft is provided with the power transmission shaft convex shoulder, described cushion collar is provided with the cushion collar convex shoulder corresponding with described power transmission shaft convex shoulder, described elastomeric element is installed in the gap between described power transmission shaft convex shoulder and the described cushion collar convex shoulder, the upper end of described elastomeric element is resisted against on the described power transmission shaft convex shoulder, and the lower end abutment of described elastomeric element is on described cushion collar convex shoulder.
As optimized technical scheme, described elastomeric element is a spring.
As optimized technical scheme, described spring is at least two group ring springs.
As optimized technical scheme, described buffering stop block comprises the upper limit convex shoulder that is arranged on the described power transmission shaft, and the lower end of described power transmission shaft is equipped with the lower limit baffle ring.
As optimized technical scheme, described sealing device comprises the sealing ring that is separately positioned on two ends, gap between described power transmission shaft and the described cushion collar.
Owing to adopted technique scheme, the shock resistance helicoid hydraulic motor, comprise the screw drill shell body, be rotatablely equipped with power transmission shaft in the described screw drill shell body, described screw drill shell body is stretched out in the lower end of described power transmission shaft, the bottom of described power transmission shaft is set with the cushion collar that drill bit is installed, be spline fitted between described power transmission shaft and the described cushion collar, described power transmission shaft is provided with the buffering stop block of the described cushion collar shaft orientation moving range of restriction, be provided with the axial elasticity buffer between described power transmission shaft and the described cushion collar, the fit clearance place of described power transmission shaft and described cushion collar is provided with sealing device; Be provided with the axial elasticity buffer between power transmission shaft and the cushion collar; alleviate or eliminated bouncing of drilling tool and impact endurance test shock when in the bouncing of drilling tool bottom, creeping into; reduced the damage of drilling tool, drill bit; protected the intact of the connection of drill collar and the borehole wall; improved the whole service life of drilling tool; and increased the safety of drilling well, improved the speed of drilling well.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the partial enlarged drawing at I place among Fig. 1;
Fig. 3 is the working state schematic representation of the utility model embodiment;
Fig. 4 is the structural representation of existing design in the background technology;
Among the figure: the 1-power transmission shaft; The 2-crossover sub; The 3-cushion collar; 4-power transmission shaft convex shoulder; 5-cushion collar convex shoulder; 7-lower limit baffle ring; The 8-internal spline; The 9-external splines; The 10-ring spring; The 11-sealing ring; Steel ring in the 12-; The 13-outer rim; The 14-steel ball; 15-screw drill shell body.
The specific embodiment
As depicted in figs. 1 and 2, the shock resistance helicoid hydraulic motor, comprise screw drill shell body 15, be rotatablely equipped with power transmission shaft 1 in the described screw drill shell body 15, described screw drill shell body 15 is stretched out in the lower end of described power transmission shaft 1, the bottom of described power transmission shaft 1 is set with the cushion collar 3 that drill bit is installed, be spline fitted between described power transmission shaft 1 and the described cushion collar 3, the middle part of described cushion collar 3 is provided with internal spline 8, described power transmission shaft 1 is provided with the external splines 9 corresponding with described internal spline 8, and described power transmission shaft 1 is provided with the buffering stop block of described cushion collar 3 shaft orientation moving ranges of restriction; Be provided with the axial elasticity buffer between described power transmission shaft 1 and the described cushion collar 3, the fit clearance place of described power transmission shaft 1 and described cushion collar 3 is provided with sealing device, and described sealing device comprises the sealing ring 11 that is separately positioned on two ends, gap between described power transmission shaft 1 and the described cushion collar 3; Described cushion collar 3 comprises the buffering body, and the lower end fixed installation of described buffering body is useful on the crossover sub 2 that drill bit is installed; Described axial elasticity buffer comprises the elastomeric element that is sleeved on the described power transmission shaft 1, described power transmission shaft 1 is provided with power transmission shaft convex shoulder 4, described cushion collar 3 is provided with the cushion collar convex shoulder 5 corresponding with described power transmission shaft convex shoulder 4, described elastomeric element is installed in the gap between described power transmission shaft convex shoulder 4 and the described cushion collar convex shoulder 5, the upper end of described elastomeric element is resisted against on the described power transmission shaft convex shoulder 4, the lower end abutment of described elastomeric element is on described cushion collar convex shoulder 5, described elastomeric element is a spring, and described spring is four groups of ring springs 10; Described buffering stop block comprises the upper limit convex shoulder that is arranged on the described power transmission shaft 1, and described power transmission shaft convex shoulder 4 is double does described upper limit convex shoulder, and the lower end of described power transmission shaft 1 is equipped with lower limit baffle ring 7.
Described ring spring 10 on the described power transmission shaft 1 between described power transmission shaft convex shoulder and described cushion collar convex shoulder 5, with the vibrations that take place in addition moment eliminate, vibrations can't be uploaded, and have avoided the above instrument of drill bit to be impacted, slow down the damage of parts, increased the life-span of running part.
Described sealing device comprises the sealing ring 11 that is separately positioned on two ends, gap between described power transmission shaft 1 and the described cushion collar 3; Under high pressure do not reveal, assurance ring spring and other operation elements are worked in airtight oil immersion environment, increase the application life of each work package.
As shown in Figure 3; in drilling well, run into bouncing of drilling tool; drill bit drives crossover sub 2, and crossover sub 2 drives on the cushion collar 3 jumps, and the ring-like spring 10 of cushion collar 3 compressings forces its distortion to absorb energy; alleviate or eliminated bouncing of drilling tool and impact endurance test shock when in the bouncing of drilling tool bottom, creeping into; reduce the damage of drilling tool, drill bit, protected the intact of the connection of drill collar and the borehole wall, improved the whole service life of drilling tool; and increased the safety of drilling well, improved the speed of drilling well.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the manual just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. shock resistance helicoid hydraulic motor, comprise the screw drill shell body, be rotatablely equipped with power transmission shaft in the described screw drill shell body, it is characterized in that: described screw drill shell body is stretched out in the lower end of described power transmission shaft, the bottom of described power transmission shaft is set with the cushion collar that drill bit is installed, be spline fitted between described power transmission shaft and the described cushion collar, described power transmission shaft is provided with the buffering stop block of the described cushion collar shaft orientation moving range of restriction, be provided with the axial elasticity buffer between described power transmission shaft and the described cushion collar, the fit clearance place of described power transmission shaft and described cushion collar is provided with sealing device.
2. shock resistance helicoid hydraulic motor as claimed in claim 1 is characterized in that: described cushion collar comprises the buffering body, and the lower end fixed installation of described buffering body is useful on the crossover sub that drill bit is installed.
3. shock resistance helicoid hydraulic motor as claimed in claim 1, it is characterized in that: described axial elasticity buffer comprises the elastomeric element that is sleeved on the described power transmission shaft, described power transmission shaft is provided with the power transmission shaft convex shoulder, described cushion collar is provided with the cushion collar convex shoulder corresponding with described power transmission shaft convex shoulder, described elastomeric element is installed in the gap between described power transmission shaft convex shoulder and the described cushion collar convex shoulder, the upper end of described elastomeric element is resisted against on the described power transmission shaft convex shoulder, and the lower end abutment of described elastomeric element is on described cushion collar convex shoulder.
4. shock resistance helicoid hydraulic motor as claimed in claim 3 is characterized in that: described elastomeric element is a spring.
5. shock resistance helicoid hydraulic motor as claimed in claim 4 is characterized in that: described spring is at least two group ring springs.
6. as claim 1,2,3,4 or 5 described shock resistance helicoid hydraulic motors, it is characterized in that: described buffering stop block comprises the upper limit convex shoulder that is arranged on the described power transmission shaft, and the lower end of described power transmission shaft is equipped with the lower limit baffle ring.
7. as claim 1,2,3,4 or 5 described shock resistance helicoid hydraulic motors, it is characterized in that: described sealing device comprises the sealing ring that is separately positioned on two ends, gap between described power transmission shaft and the described cushion collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200001932U CN201924835U (en) | 2011-01-04 | 2011-01-04 | Anti-impact screw drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200001932U CN201924835U (en) | 2011-01-04 | 2011-01-04 | Anti-impact screw drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201924835U true CN201924835U (en) | 2011-08-10 |
Family
ID=44428693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200001932U Expired - Lifetime CN201924835U (en) | 2011-01-04 | 2011-01-04 | Anti-impact screw drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201924835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061888A (en) * | 2011-01-04 | 2011-05-18 | 潍坊盛德石油机械制造有限公司 | Impact-resistant screw drill tool |
-
2011
- 2011-01-04 CN CN2011200001932U patent/CN201924835U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061888A (en) * | 2011-01-04 | 2011-05-18 | 潍坊盛德石油机械制造有限公司 | Impact-resistant screw drill tool |
| CN102061888B (en) * | 2011-01-04 | 2013-03-27 | 潍坊盛德石油机械制造有限公司 | Impact-resistant screw drill tool |
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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: 20110810 Effective date of abandoning: 20130327 |
|
| RGAV | Abandon patent right to avoid regrant |