CN209780823U - Tubular object lifting fisher - Google Patents
Tubular object lifting fisher Download PDFInfo
- Publication number
- CN209780823U CN209780823U CN201920464804.5U CN201920464804U CN209780823U CN 209780823 U CN209780823 U CN 209780823U CN 201920464804 U CN201920464804 U CN 201920464804U CN 209780823 U CN209780823 U CN 209780823U
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- China
- Prior art keywords
- lifting
- shell
- steel ball
- cone
- diameter
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- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- 238000007906 compression Methods 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 238000005553 drilling Methods 0.000 description 12
- 230000000903 blocking effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
the scheme discloses a tubular object lifting fisher in the technical field of lifting fishing equipment, which comprises a lifting rod and a shell, wherein a cone is integrally formed at the bottom end of the lifting rod, a gap of the cone is arranged in the shell, a plurality of conical channels are arranged on the shell, a steel ball is movably placed in each conical channel, the diameter of each steel ball is four fifths of the minimum diameter of each conical channel, and the thickness of the shell is between one half and three fifths of the diameter of each steel ball; fixedly connected with dog on the lift bar, be equipped with the spring that is in half compression state between dog and the shell upper end, the inclined plane of cone offsets with the steel ball all the time and holds, and this scheme is used for hollow drill rod's lifting or salvages, and not only convenient operation, reliability are high and, whole weight is lighter, is favorable to using widely.
Description
Technical Field
The application belongs to the technical field of lifting fishing equipment, and particularly relates to a tubular object lifting fisher.
Background
In engineering geological drilling construction, particularly in the process of drilling and boring rocks and the ground, a drill rod is additionally arranged on a drill bit, wherein one drill rod is a hollow drill rod, water is introduced into the hollow drill rod to dissipate heat of the drill bit, and meanwhile, the rocks and soil of the drill bit part are diluted.
After the drilling is finished, the hollow drill rod needs to be lifted, and is recovered and lifted out of the drilling hole, and the hollow drill rod needs to be used in a lifter, for example, the Chinese patent application, the patent with the publication number of CN2108791U, discloses an inner clamping type lifter, which comprises a lifting ring connected with the upper end of a core column, an upper bearing body and a lower bearing body arranged in the middle of the core column, a belleville spring arranged between the upper bearing body and the lower bearing body, the upper bearing body and the lower bearing body are in sliding fit with the core column, a shell is wrapped outside the upper bearing body and the lower bearing body, the upper bearing body is in sliding fit with the shell, and the lower bearing body is in threaded connection with the shell. The lower part of the stem is in threaded connection with a collet with a cone, a stop block thread clamp is additionally arranged, the inner surface of the stop block thread clamp is provided with a cylindrical surface and a conical surface which are matched with the stem and the collet cone, the outer surface of the stop block thread clamp is provided with threads matched with a drilling tool, one end of the thread clamp is also provided with a dovetail slide block which is matched with a dovetail slide groove of a lower bearing body, each thread clamp is provided with an upper groove and a lower groove, two contraction springs are arranged in the grooves to enable the thread clamp to generate contraction force, limiting steel balls are arranged on the shell, the upper bearing body and the lower bearing body, and a limiting.
Foretell elevator's theory of operation promotes the stem through the hoist, in the promotion in-process, stem upward movement, the below of stem is the cone, the cone drives the outside expansion of three screw thread card of below, screw thread card realizes screw-thread fit with the internal thread of treating to promote hollow drill pipe like this, pin the position of stem through the handle simultaneously, realize the security of promotion process, after promoting the completion, loosen the handle, reply through the spring makes the screw thread card retract and release screw thread joint relation, the design has limiting displacement's steel ball simultaneously in this scheme, after releasing, in order to prevent that the stem from shifting up and setting, belong to insurance annex.
Although the above patent application can achieve the lifting function for the hollow drill rod, the structure is still relatively complex, an upper set and a lower set are used as the middle moving accessories, and under the condition that the handle is arranged, the steel ball of the safety accessory is not needed to be designed, so that the whole structure is relatively complex, and the whole structure is relatively heavy. The three split thread clamps designed in the scheme are used as retraction and expansion parts, and the biggest problem is that the threads are easily misaligned in the thread matching process, so that thread teeth are easily damaged in the lifting process. And in the lifting process, if the internal thread of the hollow drill rod is broken or lost, the lifting purpose cannot be achieved.
SUMMERY OF THE UTILITY MODEL
The purpose of this scheme is to provide a tubular object lifting fisher to solve prior art's lifter structure complicacy, and need carry out the problem of the unnecessary operation that matches to the screw thread when connecting.
In order to solve the technical problem, the scheme provided by the application is a tubular object lifting fisher which comprises a rod-shaped lifting rod and a tubular shell, wherein a cone is integrally formed at the bottom end of the lifting rod, the outer diameter of the cone far away from the lifting rod is gradually increased, the gap of the cone is arranged in the shell, a plurality of radial and penetrating conical passages are arranged on the shell, the conical passages are centrosymmetric by using the axis of the shell, the inner diameters of the conical passages are gradually reduced from inside to outside, a steel ball is movably placed in each conical passage, the diameter of the steel ball is four fifths of the minimum diameter of each conical passage, and the thickness of the shell is between one half and three fifths of the diameter of the steel ball; the lifting rod is fixedly connected with a stop block, a spring in a semi-compression state is arranged between the stop block and the upper end of the shell, the spring is sleeved on the lifting rod, and the inclined plane of the cone is always abutted to the steel ball.
The working principle of the scheme is as follows: when need follow the drilling hole and promote or salvage out if hollow drill rod, through the promotion of this scheme, at first connect the hoist on the lifter, put into hollow drill rod with the shell part of whole device again inside, the diameter of shell can be according to hollow drill rod's internal diameter size matching design when in actual use for the shell just in time imbeds in the hollow drill rod.
When the lifting tool applies upward lifting force, the lifting rod moves upwards along with the lifting rod, the cone at the bottom end of the lifting rod also moves upwards in the movement process, the inclined plane of the cone pushes the steel ball to expand outwards at the moment, the steel ball is abutted between the cone and the inner wall of the hollow drill rod at the moment, the larger the upward force of the lifting tool is, the firmer the steel ball is abutted, and thus the hollow drill rod and the whole lifting fisher are connected into a whole; the hollow drill rod can be lifted out of the drilled hole by continuously doing work on the lifting rod.
When the hollow drill rod needs to be unloaded, the unloading can be completed only by downwards knocking the lifting rod.
The beneficial effect of this scheme:
The scheme has the advantages that the structure is less, and only the lifting rod, the shell, the stop block, the steel ball and the spring are used; only the lifting rod and the steel ball are really stressed and need to be strengthened, so that the shell, the stop block and the spring can be made of light steel, the lifting rod is made of a solid bar material, and only the bar material with the diameter larger than that of the lifting rope is needed; the steel ball occupies a small volume and the mass can be ignored; therefore, through the improvement of results, the weight of the existing elevator for lifting the hollow drill rod with the same type can be reduced by at least 50 percent; this is convenient for the operator to use.
Compared with the existing mode of adopting an external clamp, the scheme can go deep into the drilling hole to lift or salvage the hollow drill rod. The defect that the existing externally-clamped hollow drill rod needing to be lifted can be lifted only when being exposed on the ground is overcome.
Thirdly, the reliability analysis of this scheme, the effect structure that this scheme adopted specifically does "be provided with radial and a plurality of toper passageways that run through on the shell, it is a plurality of toper passageway is central symmetry with the axis of shell, and is a plurality of toper passageway's internal diameter reduces from inside to outside gradually, and a steel ball is placed to the activity in the toper passageway, the diameter of steel ball is four fifths of toper passageway minimum diameter, and the thickness of shell is between one-half to three fifths of steel ball diameter.
Firstly, in the lifting process that the diameter of the steel ball is four fifths of the minimum diameter of the conical channel, the maximum amount of the steel ball protruding out of the conical channel is two fifths of the diameter of the steel ball (which can be obtained by simple conversion according to the geometric principle), so that the steel ball can actually generate an extrusion force on the inner wall of the hollow drill rod, and the inner wall of the hollow drill rod is deformed inwards; the upward trend of the steel ball and the downward trend of the hollow drill rod enable the steel ball to be strongly meshed with the inner wall of the hollow drill rod.
Secondly, the shell is provided with a plurality of radial and penetrating conical channels which are centrosymmetric with the axis of the shell, so that extrusion force is applied to the inner wall of the hollow drill rod in the circumferential direction of the steel balls, and the biting force between the steel balls is further increased.
Aiming at the reliability of the lifting appliance, the applicant tests for many times, the gap between the shell and the hollow drill rod is less than 2 mm, the diameter of the steel ball is more than 8mm, and the hollow drill rod can be firmly clamped in the lifting process after the steel ball can protrude two fifths.
further, the upper part of the lifting rod is provided with a thread which is convenient for connecting a lifting ring. Through threaded connection lifting ring for haulage rope lug connection simplifies the installation degree of difficulty that promotes on lifting ring.
Further, the diameter of the steel ball is 8 mm-20 mm. By adopting the steel balls in the range, the lifting of the hollow drill rod commonly used at present can be realized, and if the steel balls are smaller than 8mm, the strength of the lifting connection can not be achieved; if the diameter is larger than 20mm, the lifting fishing tool is not practical, and the weight of the whole lifting fishing tool needs to be increased, so that the lifting fishing tool cannot be paid.
Further, the inclined plane of the cone has an inclination angle of 60-80 degrees. The inclined plane of the cone is limited, so that the moving distance of the central rod is reasonable, according to the test, the moving distance is 2-3 times of the distance of the steel ball protruding out of the conical channel, and the stability of the lifting process is improved.
Further, a handle for unloading the hollow drill rod is arranged between the shell and the lifting rod, the handle comprises a first split body fixed on the shell and a second split body hinged with the first split body, and the second split body movably abuts against the stop block.
When being in the promotion of earth's surface hollow drill rod, need release when hollow drill rod and take off, only need hold between the fingers the handle, the second components of a whole that can function independently will drive the dog and move down, dog and lifting bar fixed connection, the lifting bar also moves down thereupon, and the cone has released the support power of steel ball this moment, and the steel ball withdraws back to in the toper passageway, just so can easily take off hollow drill rod.
After the second split body is released, the spring drives the lifting rod to rise back because the spring is in a compressed state, so that the stroke of the cone moving up and down in the shell is limited, the steel ball is always positioned in the conical channel, and the reliability of the whole device is improved.
And finally, the first split body and the shell are fixed in a detachable mode through bolts. Therefore, whether a handle is needed or not can be selected according to the condition of the lifted hollow drill rod, and the universality of the lifting fisher is improved.
Drawings
FIG. 1 is a schematic structural view of a hollow drill rod lifting fisher in embodiment 1;
FIG. 2 is a schematic structural diagram of the use state of the hollow drill pipe lifting fisher in the embodiment 1;
FIG. 3 is a comparison of the state of the cone, the steel ball, the conical channel and the hollow drill rod of FIGS. 1 and 2;
FIG. 4 is a schematic structural diagram of a hollow drill rod lifting fisher in the embodiment 2;
Fig. 5 is a schematic structural diagram of the use state of the hollow drill rod lifting fisher in the embodiment 2.
Wherein the reference numerals in fig. 1, 2, and 3 include: the device comprises a lifting rod 1, a cone 2, a shell 3, a stop block 4, a spring 5, a conical channel 6, a steel ball 7, a hollow drill rod 8, a drilled hole 9, a suspender 101, a first split body 11 and a second split body 12.
The reference numerals in fig. 4 and 5 include: the device comprises a lifting rod 1, a cone 2, a shell 3, a stop block 4, a spring 5, a conical channel 6, a steel ball 7, a hollow drill rod 8, a drilled hole 9, a lifting ring 102, a first split body 11 and a second split body 12.
Detailed Description
The following is further detailed by way of specific embodiments:
Example 1
The scheme is basically as shown in fig. 1, fig. 2 and fig. 3, and the tubular object lifting fisher comprises a rod-shaped lifting rod 1 and a tubular housing 3, wherein a cone 2 is integrally formed at the bottom end of the lifting rod 1, the outer diameter of the cone 2 far away from the lifting rod 1 is gradually increased, a cone gap is arranged in the housing 3, a plurality of radial and penetrating conical passages 6 are arranged on the housing 3, the conical passages 6 are centrosymmetric with the axis of the housing 3, the inner diameters of the conical passages 6 are gradually reduced from inside to outside, a steel ball 7 is movably arranged in each conical passage 6, the diameter of each steel ball 7 is four fifths of the minimum diameter of each conical passage 6, and the thickness of the housing 3 is between one half and three fifths of the diameter of each steel ball 7; the diameter of the steel ball 7 is 8 mm-20 mm, and 10mm is selected in the embodiment; the inclined plane of the cone 2 is inclined at an angle of 60-80 degrees, and the inclined plane of the cone 2 in the embodiment is inclined at 75 degrees.
Fixedly connected with dog 4 on the lift bar 1, be equipped with the spring 5 that is in half compression state between dog 4 and the 3 upper ends of shell, spring 5 overlaps on lift bar 1, and the inclined plane of cone 2 offsets with steel ball 7 all the time and holds, and the upper portion of lift bar 1 is equipped with the screw thread of being convenient for connect jib 101.
The hollow drill rod 8 needs to be lifted or fished out of the borehole 9 by the lifting of the scheme. At first pass through threaded connection on the lifting bar with jib 101, put into hollow drilling rod 8 with the shell 8 of whole device again inside, owing to begin to block into hollow drilling rod in, the lifting bar receives the ascending lifting force of spring, the steel ball has some to stick out, at this time connect rigid jib 101 in the lifting bar top, exert strength downwards through jib 101, let the lifting bar move down through the jib, and then let the steel ball get back to in the toper passageway, the diameter of shell 3 can be according to hollow drilling rod 8's internal diameter size when using and match the design, the external diameter of general shell is less than hollow drilling rod 8's internal diameter slightly, make like this that shell 3 can the zero clearance card go into inside hollow drilling rod 8.
When upward lifting force is applied to the suspender 101, the lifting rod 1 also moves upwards, the cone 2 at the bottom end of the lifting rod 1 also moves upwards in the movement process, at this time, the inclined plane of the cone 2 pushes the steel ball to expand outwards, the steel ball 7 is propped between the cone 2 and the inner wall of the hollow drill rod 8, the larger the upward force of the suspender 101 is, the firmer the propped steel ball 7 is, and thus the hollow drill rod 8 and the whole lifting fishing device are connected into a whole; the hollow drill rod 8 can be lifted out of the drill hole 9 by continuously applying work to the lifting rod 1. When the hollow drill rod 8 needs to be unloaded, only one force needs to be applied downwards to the lifting rod 1, so that the steel ball is retracted into the conical channel, and the unloading can be completed.
Example 2
as shown in fig. 4, 5 and 3, the tubular object lifting fisher comprises a rod-shaped lifting rod 1 and a tubular housing 3, wherein a cone 2 is integrally formed at the bottom end of the lifting rod 1, the outer diameter of the cone 2 far away from the lifting rod is gradually increased, the gap of the cone 2 is arranged in the housing 3, a plurality of radial and penetrating conical passages 7 are arranged on the housing 3, the conical passages 7 are centrosymmetric with the axis of the housing 3, the inner diameters of the conical passages 3 are gradually reduced from inside to outside, a steel ball 7 is movably arranged in the conical passage 3, the diameter of the steel ball 7 is four fifths of the minimum diameter of the conical passage 6, and the thickness of the housing 3 is between one half and three fifths of the diameter of the steel ball 7; the diameter of the steel ball is 8 mm-20 mm, and 10mm is selected in the embodiment; the inclined plane of the cone is inclined at an angle of 60-80 deg., and in this embodiment 75 deg. is selected.
Fixedly connected with dog 4 on the lift bar 1, be equipped with the spring 5 that is in half compression state between dog 4 and the shell 3 upper end, spring 5 overlaps on lift bar 1, and the inclined plane of cone 2 offsets with steel ball 7 all the time and holds, and the upper portion of lift bar 1 is equipped with the screw thread that is convenient for connect lifting ring 102.
a handle for unloading the hollow drill rod 8 is arranged between the shell 3 and the lifting rod 1, the handle comprises a first split body 11 fixed on the shell 3 and a second split body 12 hinged with the first split body 11, a blocking edge is arranged on the blocking block, and the second split body 12 is movably abutted against the blocking edge of the blocking block 4.
In the lifting process, a rigid lifting appliance and a flexible lifting appliance can be used, in the embodiment, different from the embodiment 1, in the process that the hollow drill rod 8 needs to be released, only a handle needs to be pinched, the second split body 12 drives the stop block 4 to move downwards, the stop block 4 is fixedly connected with the lifting rod 1, the lifting rod 1 also moves downwards along with the stop block, at the moment, the cone 2 releases the supporting force of the steel ball 7, and the steel ball 7 returns to the conical channel 6, so that the hollow drill rod 8 can be easily taken down. After the second split body is loosened, the spring 5 drives the lifting rod 1 to rise back because the spring 5 is in a compressed state, so that the stroke of the cone 2 moving up and down in the shell 3 is limited, the steel ball 7 is always positioned in the conical channel 6, and the reliability of the whole device is improved.
The above are merely examples of the present invention, and common general knowledge of known specific structures and characteristics in the schemes is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. The utility model provides a pipe-shaped thing lifting fisher, includes rodlike lifting rod to and pipy shell, lifting rod bottom integrated into one piece is equipped with the cone, and this cone is kept away from the lifting rod external diameter grow gradually, the cone clearance is to in the shell its characterized in that: the shell is provided with a plurality of radial and penetrating conical channels, the conical channels are centrosymmetric by the axis of the shell, the inner diameters of the conical channels are gradually reduced from inside to outside, a steel ball is movably placed in each conical channel, the diameter of each steel ball is four fifths of the minimum diameter of each conical channel, and the thickness of the shell is between one half and three fifths of the diameter of each steel ball; the lifting rod is fixedly connected with a stop block, a spring in a semi-compression state is arranged between the stop block and the upper end of the shell, the spring is sleeved on the lifting rod, and the inclined plane of the cone is always abutted to the steel ball.
2. A tubular lifting overshot according to claim 1, characterised in that: the upper part of the lifting rod is provided with threads.
3. a tubular lifting overshot according to claim 2, characterised in that: the diameter of the steel ball is 8 mm-20 mm.
4. A tubular lifting overshot according to claim 3, characterised in that: the inclined angle of the inclined plane of the cone is 60-80 degrees.
5. A tubular lifting overshot according to claim 1 or 4, characterised in that: the handle is arranged between the shell and the lifting rod and used for unloading the hollow drill rod, the handle comprises a first split body fixed on the shell and a second split body hinged with the first split body, and the second split body is movably abutted against the stop block.
6. A tubular lifting overshot according to claim 5, characterised in that: the first split body and the shell are fixed in a detachable mode through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920464804.5U CN209780823U (en) | 2019-04-08 | 2019-04-08 | Tubular object lifting fisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920464804.5U CN209780823U (en) | 2019-04-08 | 2019-04-08 | Tubular object lifting fisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209780823U true CN209780823U (en) | 2019-12-13 |
Family
ID=68801576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920464804.5U Expired - Fee Related CN209780823U (en) | 2019-04-08 | 2019-04-08 | Tubular object lifting fisher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209780823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701849A (en) * | 2020-12-21 | 2021-04-23 | 宁波智启机电有限公司 | Multistage split type tubular motor reducer |
-
2019
- 2019-04-08 CN CN201920464804.5U patent/CN209780823U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701849A (en) * | 2020-12-21 | 2021-04-23 | 宁波智启机电有限公司 | Multistage split type tubular motor reducer |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |