CN111089110A - Combined screw shaft for spiral drilling machine - Google Patents
Combined screw shaft for spiral drilling machine Download PDFInfo
- Publication number
- CN111089110A CN111089110A CN201911344358.5A CN201911344358A CN111089110A CN 111089110 A CN111089110 A CN 111089110A CN 201911344358 A CN201911344358 A CN 201911344358A CN 111089110 A CN111089110 A CN 111089110A
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- China
- Prior art keywords
- screw
- cross
- shaft
- small
- shaft joint
- Prior art date
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- 238000005553 drilling Methods 0.000 title description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 125000003003 spiro group Chemical group 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract description 17
- 238000010168 coupling process Methods 0.000 abstract description 17
- 238000005859 coupling reaction Methods 0.000 abstract description 17
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
- F16C3/023—Shafts; Axles made of several parts, e.g. by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/18—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements
- F16B7/182—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements for coaxial connections of two rods or tubes
Abstract
The invention discloses a combined screw shaft for a screw drill, which comprises a plurality of linearly spliced shaft joints, wherein each shaft joint comprises a large shaft body, a small shaft body and a cross-shaped boss, a screw blade is fixed on the large shaft body, counter bores, large cross-shaped grooves and small cross-shaped grooves are formed in the shaft joints, the small shaft body of the shaft joint at the upper side is inserted in the counter bore of the next shaft joint adjacent to the small shaft joint, and the cross-shaped boss of the shaft joint at the upper side is inserted in the large cross-shaped groove of the next shaft joint adjacent to the small shaft body; a cross-shaped fixing block is fixed in the small cross-shaped groove, step through holes are formed in the bottom surface of the small cross-shaped groove, a fastening screw is sleeved in each step through hole, and the end of each fastening screw is in threaded connection with the cross-shaped fixing block in the next shaft joint. The length of the spiral shaft can be changed by increasing or decreasing the number of the shaft joints so as to meet different working condition requirements; and meanwhile, the shaft coupling is convenient to mount or dismount.
Description
Technical Field
The invention relates to the technical field of spiral drilling machines, in particular to a combined spiral shaft for a spiral drilling machine.
Background
At present, with the gradual and intensive urban construction, the depth of foundation pit excavation is continuously increased, the pile length of a slope protection pile is increased, a spiral drilling machine is usually used for drilling, but the spiral shaft of the existing spiral drilling machine is integrated, the length of the spiral shaft cannot be changed, and when a certain part of the spiral shaft is scrapped, the whole spiral shaft is scrapped.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a combined screw shaft for a screw drill, which can change the length of the screw shaft by increasing or decreasing the number of shaft joints so as to meet different working condition requirements; and meanwhile, the shaft coupling is convenient to mount or dismount.
The scheme for solving the technical problems is as follows:
a combined screw shaft for a screw drilling machine comprises a plurality of linearly spliced shaft joints, wherein each shaft joint comprises a large shaft body, a small shaft body and a cross-shaped boss which are sequentially formed from top to bottom, a screw blade is fixed on the outer wall of the large shaft body, a counter bore, a large cross-shaped groove and a small cross-shaped groove are sequentially formed in the shaft joints from top to bottom, the inner diameter of the counter bore is matched and connected with the outer diameter of the small shaft body, the inner wall outline of the large cross-shaped groove is matched with the outer wall outline of the cross-shaped boss, the small shaft body of the shaft joint on the upper side is inserted and sleeved in the counter bore of the next shaft joint adjacent to the small shaft body, and the cross-shaped boss of the shaft joint on the upper side is inserted and sleeved in the large cross-shaped groove of the next shaft joint adjacent to the small shaft joint; a cross-shaped fixing block matched with the small cross-shaped groove is fixed in the small cross-shaped groove, four threaded through holes which are uniformly distributed on the circumference are formed on the outer edge of the cross-shaped fixing block, four step through holes which correspond to the four threaded through holes one by one are formed on the bottom surface of the small cross-shaped groove, a fastening screw is sleeved in each step through hole, and the fastening screw penetrates through the lower extending end of the step through hole and is screwed in the threaded through hole of the cross-shaped fixing block in the next shaft joint; the lower side wall of the spiral blade of each coupling is attached to the upper side wall of the spiral blade of the next coupling adjacent to the lower side wall of the spiral blade of each coupling.
The middle part shaping of "ten" word fixed block has the concave station, and the shaping has four evenly distributed bolt through-holes on the concave station, the shaping has four screw holes with four bolt through-hole one-to-one on the lower bottom surface in little "ten" word groove, and every bolt through-hole cup joints the second screw, and the lower extreme spiro union of second screw is in the screw hole.
An annular groove is formed in the outer wall of the small shaft body, a sealing ring is sleeved in the annular groove, and the outer wall of the sealing ring is pressed against the inner wall of the counter bore of the next shaft joint.
The middle part of the bottom surface of the small cross-shaped groove is provided with a second step through hole with an I-shaped cross section, a vertically arranged screw rod is screwed in a middle hole of the second step through hole, the lower end of the screw rod is connected with a pressing block, the pressing block is arranged in a lower end hole of the second step through hole, the upper end of the screw rod is fixed with an adjusting boss, and the adjusting boss is provided with a hexagonal groove with an opening at the upper side.
The pressing block is hinged to the lower end of the screw rod through a bearing.
The length H1 of the big shaft body is integral multiple of the screw pitch L1 of the spiral blade.
The depth H2 of the counter bore is larger than the length H3 of the small shaft body, and the lower end surface of the large shaft body of the previous shaft joint is pressed against the upper end surface of the large shaft body of the next adjacent shaft joint.
Planes which are parallel to each other are formed at the upper end and the lower end of the spiral blade, and the planes at the two ends of the spiral blade are flush with the planes at the two ends of the large shaft body.
The relative positions of the spiral blades on each shaft joint and the cross-shaped boss are kept consistent.
The invention has the following outstanding effects: compared with the prior art, the length of the spiral shaft can be changed by increasing or decreasing the number of the shaft joints so as to meet different working condition requirements; and meanwhile, the shaft coupling is convenient to mount or dismount.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a schematic structural view of the coupling of the present invention;
FIG. 4 is a cross-sectional view of the coupling of the present invention;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;
fig. 6 is a cross-sectional view taken along line C-C of fig. 4.
Detailed Description
In an embodiment, as shown in fig. 1 to 6, a combined screw shaft for a screw drill includes a plurality of linearly spliced shaft joints 1, where the shaft joint 1 includes a large shaft body 11, a small shaft body 12 and a cross boss 13 which are sequentially formed from top to bottom, a screw blade 14 is fixed on an outer wall of the large shaft body 11, a counter bore 101, a large cross groove 102 and a small cross groove 103 are sequentially formed in the shaft joint 1 from top to bottom, an inner diameter of the counter bore 101 is in fit connection with an outer diameter of the small shaft body 12, an inner wall profile of the large cross groove 102 is in fit with an outer wall profile of the cross boss 13, the small shaft body 12 of the upper shaft joint 1 is inserted in the counter bore 101 of the next shaft joint 1 adjacent thereto, and the cross boss 13 of the upper shaft joint 1 is inserted in the large cross groove 102 of the next shaft joint 1 adjacent thereto; a cross-shaped fixing block 15 matched with the small cross-shaped groove 103 is fixed in the small cross-shaped groove 103, four threaded through holes 151 with uniformly distributed circumferences are formed in the outer edge of the cross-shaped fixing block 15, four step through holes 104 corresponding to the four threaded through holes 151 in a one-to-one manner are formed in the bottom surface of the small cross-shaped groove 103, a fastening screw 16 is sleeved in each step through hole 104, and the fastening screw 16 penetrates through the lower extending end of the step through hole 104 and is screwed in the threaded through hole 151 of the cross-shaped fixing block 15 in the next shaft joint 1; the lower side wall of the spiral blade 14 of each coupling 1 is attached to the upper side wall of the spiral blade 14 of the next coupling 1 adjacent thereto.
Furthermore, a concave table is formed in the middle of the cross-shaped fixing block 15, four evenly distributed bolt through holes 152 are formed in the concave table, four threaded holes 105 corresponding to the four bolt through holes 152 one to one are formed in the lower bottom surface of the small cross-shaped groove 103, each bolt through hole 152 is sleeved with a second screw 17, and the lower end of each second screw 17 is screwed in the corresponding threaded hole 105.
Furthermore, an annular groove is formed on the outer wall of the small shaft body 12, a sealing ring 18 is sleeved in the annular groove, and the outer wall of the sealing ring 18 is pressed against the inner wall of the counter bore 101 of the next shaft joint 1.
Furthermore, a second step through hole 106 with an i-shaped cross section is formed in the middle of the bottom surface of the small cross-shaped groove 103, a vertically arranged screw 21 is screwed in the middle hole of the second step through hole 106, a press block 22 is connected to the lower end of the screw 21, the press block 22 is arranged in the lower end hole of the second step through hole 153, an adjusting boss 23 is fixed to the upper end of the screw 21, and a hexagonal groove 231 with an upper side opening is formed in the adjusting boss 23.
More specifically, the pressing block 22 is hinged to the lower end of the screw 21 through a bearing 24.
Furthermore, the length H1 of the large shaft body 11 is an integral multiple of the pitch L1 of the helical blade 14.
Further, the depth H2 of the counterbore 101 is greater than the length H3 of the small shaft body 12, and the lower end face of the large shaft body 11 of the previous coupling 1 is pressed against the upper end face of the large shaft body 11 of the next coupling 1 adjacent thereto.
Furthermore, the upper end and the lower end of the spiral blade 14 are formed with planes parallel to each other, and two end planes of the spiral blade 14 are flush with two end planes of the large shaft body 11.
Furthermore, the relative positions of the spiral blades 14 on each shaft joint 1 and the cross-shaped boss 13 are kept consistent.
The working principle is as follows: the installation process comprises the following steps: the cross-shaped fixing block 15 is inserted and sleeved in the small cross-shaped groove 103 of the shaft joint 1, a second screw 17 is sleeved on each bolt through hole 152 of the cross-shaped fixing block 15, then the second screw 17 is screwed on the threaded hole 105 to fix the cross-shaped fixing block 15, then the other shaft joint 1 is inserted and sleeved in the shaft joint 1, a fastening screw 16 is sleeved in each step through hole 104, and the fastening screw is screwed on the threaded through hole 151 of the cross-shaped fixing block 15 to fix the two shaft joints 1; the disassembling process comprises the following steps: the fastening screw 16 is firstly removed, if the shaft coupling on the upper side cannot be drawn out from the adjacent shaft coupling on the lower side, the adjusting boss 23 is rotated, the adjusting boss 23 drives the screw rod 21 to rotate and move downwards, the screw rod 21 drives the pressing block 22 to move downwards, the pressing block 22 moves downwards and is pressed on the cross-shaped fixing block 15 of the next shaft coupling, the shaft coupling on the upper side is jacked upwards under the action of the pressing block along with the continuous downward movement of the pressing block 22, so that the shaft coupling is quickly and effectively removed, and then the cross-shaped fixing block 15 is removed after the second screw is removed.
Finally, the above embodiments are only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (9)
1. A modular screw shaft for a screw drill, comprising a plurality of linearly spliced shaft joints (1), characterised in that: the shaft joint (1) comprises a large shaft body (11), a small shaft body (12) and a cross-shaped boss (13) which are sequentially formed from top to bottom, a spiral blade (14) is fixed on the outer wall of the large shaft body (11), a counter bore (101), a large cross-shaped groove (102) and a small cross-shaped groove (103) are sequentially formed in the shaft joint (1) from top to bottom, the inner diameter of the counter bore (101) is matched and connected with the outer diameter of the small shaft body (12), the inner wall profile of the large cross-shaped groove (102) is matched with the outer wall profile of the cross-shaped boss (13), the small shaft body (12) of the upper shaft joint (1) is inserted and sleeved in the counter bore (101) of the next shaft joint (1) adjacent to the small shaft joint, and the cross-shaped boss (13) of the upper shaft joint (1) is inserted and sleeved in the large cross-shaped groove (102) of the next shaft joint (1) adjacent to the lower shaft joint; a cross fixing block (15) matched with the small cross groove (103) is fixed in the small cross groove (103), four threaded through holes (151) with uniformly distributed circumferences are formed in the outer edge of the cross fixing block (15), four step through holes (104) corresponding to the four threaded through holes (151) one by one are formed in the bottom surface of the small cross groove (103), a fastening screw (16) is sleeved in each step through hole (104), and the fastening screw (16) penetrates through the lower extending end of the step through hole (104) and is screwed in the threaded through hole (151) of the cross fixing block (15) in the next shaft joint (1); the lower side wall of the spiral blade (14) of each shaft joint (1) is attached to the upper side wall of the spiral blade (14) of the next adjacent shaft joint (1).
2. A modular screw spindle for a screw drill according to claim 1, in which: the middle part shaping of "ten" fixed block (15) has the concave station, and the shaping has four bolt through-holes (152) of equipartition on the concave station, the shaping has four screw holes (105) with four bolt through-holes (152) one-to-one on the lower bottom surface of little "ten" groove (103), and every bolt through-hole (152) cup joints second screw (17), and the lower extreme spiro union of second screw (17) is in screw hole (105).
3. A modular screw spindle for a screw drill according to claim 1, in which: an annular groove is formed in the outer wall of the small shaft body (12), a sealing ring (18) is sleeved in the annular groove, and the outer wall of the sealing ring (18) is pressed against the inner wall of a counter bore (101) of the next shaft joint (1).
4. A modular screw spindle for a screw drill according to claim 1 or claim 2, in which: the middle part of the bottom surface of the small cross-shaped groove (103) is provided with a second step through hole (106) with an I-shaped cross section, a vertically arranged screw rod (21) is screwed in a middle hole of the second step through hole (106), the lower end of the screw rod (21) is connected with a pressing block (22), the pressing block (22) is arranged in a lower end hole of the second step through hole (153), the upper end of the screw rod (21) is fixed with an adjusting boss (23), and the adjusting boss (23) is provided with a hexagonal groove (231) with an upper side opening in a forming mode.
5. A modular screw spindle for a screw drill according to claim 4, in which: the pressing block (22) is hinged to the lower end of the screw rod (21) through a bearing (24).
6. A modular screw spindle for a screw drill according to claim 1, in which: the length H1 of the large shaft body (11) is integral multiple of the screw pitch L1 of the spiral blade (14).
7. A modular screw spindle for a screw drill according to claim 1, in which: the depth H2 of the counter bore (101) is larger than the length H3 of the small shaft body (12), and the lower end face of the large shaft body (11) of the previous shaft joint (1) is pressed against the upper end face of the large shaft body (11) of the next adjacent shaft joint (1).
8. A modular screw spindle for a screw drill according to claim 1, in which: planes which are parallel to each other are formed at the upper end and the lower end of the spiral blade (14), and planes at two ends of the spiral blade (14) are flush with planes at two ends of the large shaft body (11).
9. A modular screw spindle for a screw drill according to claim 1, in which: the relative positions of the spiral blade (14) on each shaft joint (1) and the cross-shaped boss (13) are kept consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911344358.5A CN111089110A (en) | 2019-12-24 | 2019-12-24 | Combined screw shaft for spiral drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911344358.5A CN111089110A (en) | 2019-12-24 | 2019-12-24 | Combined screw shaft for spiral drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111089110A true CN111089110A (en) | 2020-05-01 |
Family
ID=70396638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911344358.5A Withdrawn CN111089110A (en) | 2019-12-24 | 2019-12-24 | Combined screw shaft for spiral drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111089110A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4456080A (en) * | 1980-09-19 | 1984-06-26 | Holbert Don R | Stabilizer method and apparatus for earth-boring operations |
| CN202338227U (en) * | 2012-04-16 | 2012-07-18 | 保定宏业石油物探机械制造有限责任公司 | Continuous spiral drilling pipe |
| CN108026958A (en) * | 2015-09-22 | 2018-05-11 | 罗尔公司 | Drive shaft for rotary system |
| CN108505957A (en) * | 2018-05-07 | 2018-09-07 | 上海广大基础工程有限公司 | A kind of reaming stirring drill tool combination |
| CN111140162A (en) * | 2019-12-18 | 2020-05-12 | 东莞市至简机电工程技术有限公司 | Spiral drilling machine capable of customizing drilling depth |
-
2019
- 2019-12-24 CN CN201911344358.5A patent/CN111089110A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4456080A (en) * | 1980-09-19 | 1984-06-26 | Holbert Don R | Stabilizer method and apparatus for earth-boring operations |
| CN202338227U (en) * | 2012-04-16 | 2012-07-18 | 保定宏业石油物探机械制造有限责任公司 | Continuous spiral drilling pipe |
| CN108026958A (en) * | 2015-09-22 | 2018-05-11 | 罗尔公司 | Drive shaft for rotary system |
| CN108505957A (en) * | 2018-05-07 | 2018-09-07 | 上海广大基础工程有限公司 | A kind of reaming stirring drill tool combination |
| CN111140162A (en) * | 2019-12-18 | 2020-05-12 | 东莞市至简机电工程技术有限公司 | Spiral drilling machine capable of customizing drilling depth |
Non-Patent Citations (1)
| Title |
|---|
| 姜秀丽，高进，靳宣强，林朋朋: "螺旋机传动轴的焊接及耐磨层检测工装分析", 《现代制造技术与装备》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20200501 |