CN115288619A - Hydraulic spiral drill arm and method - Google Patents
Hydraulic spiral drill arm and method Download PDFInfo
- Publication number
- CN115288619A CN115288619A CN202210739982.0A CN202210739982A CN115288619A CN 115288619 A CN115288619 A CN 115288619A CN 202210739982 A CN202210739982 A CN 202210739982A CN 115288619 A CN115288619 A CN 115288619A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000011435 rock Substances 0.000 claims abstract description 9
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 230000008092 positive effect Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/022—Control of the drilling operation; Hydraulic or pneumatic means for activation or operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
- F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
- F15B15/068—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the helical type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a hydraulic spiral drill arm and a method, and belongs to the technical field of mine drill jumbo equipment. The technical scheme is as follows: piston body and inside and outside screw sleeve are whole to be welded and are constituteed the piston, and the piston is reciprocating motion under the promotion of cavity hydraulic oil about in the gyration cylinder body, simultaneously because the ring gear is fastened and can not rotate for the mounting on the internal conical surface, under the vice first cooperation of helical spline, the piston is also rotary motion (similar lead screw mechanism) when doing linear motion, because the vice one of helical spline and the vice two rotations of helical spline are opposite, and the revolving axle is the rotation of equidirectional under the cooperation of the vice two of helical spline. The invention has the following positive effects: the strength and the rigidity of the root of the drill boom are enhanced in the using state of the drill boom, the characteristic that the hollow shaft has better rigidity is utilized, the rigidity of the drill boom is increased, the stability of the working supporting environment of the hydraulic rock drill is improved, and the hydraulic rock drill is suitable for the tunnel construction environment with smaller height size.
Description
Technical Field
The invention relates to a hydraulic spiral drill arm and a method, and belongs to the technical field of mine drill jumbo equipment.
Background
The rock drilling jumbo is rock drilling equipment for tunnel and underground engineering by adopting drilling and blasting method. It can move and support multiple rock drills to drill holes simultaneously. The drill boom of the drill jumbo in the prior art generally adopts the traditional square tube appearance or solid shaft type, and the hydraulic spiral cylinder is installed at the front section of the drill boom, so that the rigidity, the length dimension and the radial dimension of the drill boom are mutually contradictory, and the drill boom is not suitable for the tunnel construction environment with smaller height dimension.
Disclosure of Invention
The invention aims to provide a hydraulic spiral drill boom and a method, wherein a hydraulic spiral cylinder is integrated in a suspension end of the drill boom, so that the strength and the rigidity of the root of the drill boom are enhanced in the using state of the drill boom, the rigidity of the drill boom is increased by utilizing the characteristic of better rigidity of a hollow shaft, the stability of the working support environment of a hydraulic rock drill is favorably improved, and the problems in the background technology are solved.
The technical scheme of the invention is as follows:
a hydraulic spiral drill boom comprises a rotary cylinder body, a branch pipe body, a rotary shaft, an inner gear ring, a piston body and inner and outer screw sleeves, wherein the piston body is arranged in the rotary cylinder body and reciprocates in the rotary cylinder body; the inner gear ring is annular, a first spiral inner spline is arranged on the inner hole wall of the inner gear ring, a first spiral outer spline and a second spiral inner spline which are opposite in spiral direction are respectively arranged on the excircle and the inner hole of the inner and outer spiral sleeves, the inner and outer spiral sleeves are inserted into the inner hole of the inner gear ring, and the first spiral outer spline of the inner and outer spiral sleeves is connected with the first spiral inner spline of the inner gear ring in a matching way; the rotary shaft consists of a rotary shaft screw shaft, a screw shaft outer sleeve and a rotary shaft hollow pipe, the rear end of the rotary shaft hollow pipe is fixedly provided with the screw shaft outer sleeve, the front end of the screw shaft outer sleeve is sealed, the rear end of the screw shaft outer sleeve is provided with an opening, the rotary shaft screw shaft is fixed in the screw shaft outer sleeve, the rotary shaft screw shaft, the screw shaft outer sleeve and the rear part of the rotary shaft hollow pipe are all arranged in the branch pipe body, an annular space is arranged between the rotary shaft screw shaft and the screw shaft outer sleeve, the inner screw sleeve and the outer screw sleeve are inserted into the annular space, a screw inner spline II of the inner screw sleeve and a screw outer spline II of the outer screw sleeve are connected with each other in a matching mode, and the screw shaft outer sleeve is fastened on the outer side of the inner screw sleeve through a supporting nut and a supporting bolt.
The piston body is provided with a piston guide ring and a piston combined seal, the piston guide ring guides the piston body, the piston body divides the inside of the rotary cylinder body into a left cavity and a right cavity, and the piston combined seal is used for sealing to prevent hydraulic oil in the left cavity or the right cavity of the rotary cylinder body from overflowing to the adjacent cavities.
The rear end of the branch pipe body is pressed on the inner gear ring, a mounting groove is formed in the inner wall of the rear end of the branch pipe body, the supporting nut is arranged in the mounting groove, thrust washers are arranged between the supporting nut and the inner gear ring and between the supporting nut and the side wall of the mounting groove, and the supporting bolt penetrates through the supporting nut to fasten the outer sleeve of the screw shaft on the outer side of the inner and outer screw sleeves.
An O-shaped ring is arranged on the outer wall of the branch pipe body and is positioned below the inner hexagon screw; the inner wall of the branch pipe body is provided with a branch pipe body seal and a branch pipe body guide ring. The O-shaped ring and the branch pipe body are sealed to form an oil cylinder sealing space to seal the rotary cylinder body. And a rotating shaft guide ring, a branch pipe body guide ring and a rotating shaft guide ring are arranged on the outer wall of the rotating shaft to form radial positioning of the rotating shaft.
The end part of the front end of the branch pipe body is provided with a round nut and a round nut lock washer, the round nut is annular and is arranged on the outer side of the rotating shaft, and the round nut lock washer is arranged between the end part of the front end of the branch pipe body and the round nut. The arrangement of the round nut and the round nut anti-loose washer can prevent the radial deviation of the branch pipe body.
The front end of the rotating shaft is provided with a plurality of inner hexagon screws, and the inner hexagon screws are connected with relevant parts in an installing mode and output rotating torque.
The outer ring of the inner gear ring is in a circular truncated cone shape matched with the inner conical surface.
The rear ends of the inner and outer spiral sleeves are sealed through a sealing plug.
The spiral direction of a first spiral external spline of the internal and external spiral sleeve is the same as that of a first spiral internal spline of the internal gear ring, and the first spiral external spline is matched with the first spiral internal spline to form a first spiral spline pair; the spiral direction of a second spiral inner spline of the inner spiral sleeve and the spiral direction of a second spiral outer spline of the spiral shaft are the same, and the second spiral inner spline and the second spiral outer spline are matched to form a second spiral spline pair; and because the spiral direction of the first spiral external spline of the internal and external spiral sleeve is opposite to that of the second spiral internal spline, the first spiral spline pair and the second spiral spline pair are two spiral spline matching pairs with opposite spiral directions.
A use method of a hydraulic spiral drill boom comprises the following steps: the piston body and the inner and outer spiral sleeves form a piston, the piston reciprocates under the pushing of hydraulic oil in the rotary cylinder body, the inner gear ring is fastened on the inner conical surface and cannot rotate, the piston does linear motion and simultaneously does rotary motion (similar to a screw rod mechanism) under the cooperation of the first spiral spline pair, and the rotary shaft rotates in the same direction under the cooperation of the second spiral spline pair due to the fact that the first spiral spline pair and the second spiral spline pair rotate in opposite directions.
The method comprises the following specific steps:
(1) under the condition that oil is fed into a right cavity of the rotary cylinder body, when the piston body moves linearly leftwards, the inner and outer spiral sleeves are driven to move leftwards, and relative rotary motion between the inner gear ring and the rotary shaft is formed under the action of the first spiral spline pair;
because the inner gear ring is pressed and fixed on the inner conical surface of the rotary cylinder body, the inner and outer screw sleeves rotate clockwise while moving leftwards; under the action of the spiral spline pair II, the rotating shaft synchronously rotates clockwise; the two clockwise rotations are overlapped to form clockwise rotation output of the rotating shaft;
(2) under the condition that oil is fed into a left cavity of the rotary cylinder body, when the piston body moves linearly rightwards, the inner and outer spiral sleeves are driven to move rightwards, and relative rotary motion between the inner gear ring and the rotary shaft is formed under the action of a first spiral spline pair;
because the inner gear ring is tightly pressed and fixed on the inner conical surface of the rotary cylinder body, the inner and outer spiral sleeves rotate anticlockwise; under the action of the spiral spline pair II, the rotating shaft synchronously rotates anticlockwise; the two anticlockwise rotation stacks to form anticlockwise rotation output of the rotating shaft;
and (3) forming the rotation output of the rotary shaft relative to the rotary cylinder body in the steps (1) and (2).
The invention has the following positive effects: the strength and the rigidity of the root of the drill boom are enhanced in the using state of the drill boom, the characteristic that the hollow shaft has better rigidity is utilized, the rigidity of the drill boom is increased, the stability of the working supporting environment of the hydraulic rock drill is improved, and the hydraulic rock drill is suitable for the tunnel construction environment with smaller height size.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a schematic view of the piston structure of the present invention;
FIG. 4 is a partial schematic view of a rotary shaft of the present invention;
FIG. 5 is an enlarged view of the portion B of FIG. 1;
in the figure: the device comprises a rotary cylinder body 1, a piston guide ring 2, a piston combined seal 3, an O-shaped ring 4, an inner hexagonal screw 5, a branch pipe body 6, a rotary shaft guide ring 7, a round nut anti-loose washer 8, a round nut 9, an inner hexagonal screw 10, a rotary shaft 11, a rotary shaft spiral shaft 111, a spiral shaft outer sleeve 112, a rotary shaft hollow pipe 113, a dust ring 12, a branch pipe body seal 13, a branch pipe body guide ring 14, a thrust gasket 15, a support nut 16, an inner gear ring 17, a piston body 18, an inner and outer spiral sleeve 19, a seal plug 20, a linear oil cylinder pin shaft 21 and a drill boom rotating pin shaft 22.
Detailed Description
The invention is further described with reference to the following figures and examples:
a hydraulic spiral drill boom comprises a rotary cylinder body 1, a branch pipe body 6, a rotary shaft 11, an inner gear ring 17, a piston body 18 and an inner and outer screw sleeve 19, wherein the piston body 18 is arranged in the rotary cylinder body 1, the piston body 18 reciprocates in the rotary cylinder body 1, the inner and outer screw sleeve 19 is of a sleeve structure with an opening at the front end and a closed rear end, the rear end of the inner and outer screw sleeve 19 is fixed on the piston body 18, the inner wall of the opening at the front end of the rotary cylinder body 1 is an inner conical surface, the inner gear ring 17 is matched at the inner conical surface, the rear end of the branch pipe body 6 is fixed at the front end of the rotary cylinder body 1 through an inner hexagon screw 5, and the inner gear ring 17 is tightly pressed on the inner conical surface; the inner gear ring 17 is annular, a first spiral inner spline is arranged on the inner hole wall of the inner gear ring 17, a first spiral outer spline and a second spiral inner spline which are opposite in spiral direction are respectively arranged on the excircle and the inner hole of the inner and outer helical sleeves 19, the inner and outer helical sleeves 19 are inserted into the inner hole of the inner gear ring 17, and the first spiral outer spline of the inner and outer helical sleeves 19 is connected with the first spiral inner spline of the inner gear ring 17 in a matching way; the rotating shaft 11 is composed of a rotating shaft screw shaft 111, a screw shaft jacket 112 and a rotating shaft hollow pipe 113, the rear end of the rotating shaft hollow pipe 113 is fixedly provided with the screw shaft jacket 112, the front end of the screw shaft jacket 112 is sealed and the rear end is opened, the rotating shaft screw shaft 111 is fixed in the screw shaft jacket 112, the rotating shaft screw shaft 111, the screw shaft jacket 112 and the rear part of the rotating shaft hollow pipe 113 are all arranged in the branch pipe body 6, an annular space is arranged between the rotating shaft screw shaft 111 and the screw shaft jacket 112, the inner screw sleeve 19 and the outer screw sleeve 19 are inserted into the annular space, the spiral inner spline II of the inner screw sleeve 19 and the spiral outer spline II outside the rotating shaft screw shaft 111 are matched and connected, and the screw shaft jacket 112 is fastened outside the inner screw sleeve 19 through a supporting nut 16 and a supporting bolt.
The piston body 18 is provided with a piston guide ring 2 and a piston combined seal 3, the piston guide ring guides the piston body, the piston body divides the inside of the rotary cylinder body into a left cavity and a right cavity, and the piston combined seal is used for sealing to prevent hydraulic oil in the left cavity or the right cavity of the rotary cylinder body from overflowing to the adjacent cavities.
The rear end of the branch pipe body 6 is tightly pressed on the inner gear ring 17, the inner wall of the rear end of the branch pipe body 6 is provided with a mounting groove, the supporting nut 16 is arranged in the mounting groove, thrust washers 15 are arranged between the supporting nut 16 and the inner gear ring 17 and between the supporting nut 16 and the side wall of the mounting groove, the supporting bolt penetrates through the supporting nut 16, the screw shaft outer sleeve 112 is fastened on the outer sides of the inner and outer screw sleeves 19, and the rotary shaft 11 is axially positioned.
An O-shaped ring 4 is arranged between the branch pipe body 6 and the rotary cylinder body 1, and the O-shaped ring 4 is positioned below the inner hexagonal screw 5; a branch pipe body seal 13 and a branch pipe body guide ring 14 are arranged between the branch pipe body 6 and the screw shaft outer sleeve 112; a rotating shaft guide ring 7 is arranged between the branch pipe body 6 and the rotating shaft hollow pipe 113. The O-shaped ring 4 and the branch pipe body seal 13 form a cylinder seal space to seal the rotary cylinder body. The branch pipe body guide ring 14 and the revolving shaft guide ring 7 position the revolving shaft 11 in the radial direction.
The front end of the branch pipe body 6 is in threaded connection with a round nut 9 and a round nut lock washer 8, the round nut 9 is annular and is arranged on the outer side of the rotating shaft 11, and the branch pipe body 6 is prevented from radial deviation.
The front end (output end) of the rotating shaft 11 is provided with a plurality of socket head cap screws 10 which are connected with relevant parts in an installing way and can output rotating torque.
The outer ring of the inner gear ring 17 is in a circular truncated cone shape matched with the inner conical surface, the inner conical surface is in matched contact with the circular truncated cone-shaped outer ring of the inner gear ring 17, and the inner conical surface is matched with the branch pipe body 6 to axially position the inner gear ring 17.
The rear ends of the inner and outer screw sleeves 19 are sealed by a sealing plug 20.
The use method of the hydraulic spiral drill boom comprises the following steps: the piston body 18 and the inner and outer spiral sleeves 19 form a piston, the piston reciprocates under the pushing of hydraulic oil in the rotary cylinder body 1, the inner gear ring 17 is fastened on the inner conical surface and cannot rotate, the piston does linear motion and also does rotary motion (similar to a screw rod mechanism) under the coordination of the first spiral spline pair, and the rotary shaft 11 rotates in the same direction under the coordination of the second spiral spline pair due to the fact that the first spiral spline pair and the second spiral spline pair have opposite rotation directions.
In the present embodiment, with reference to fig. 1-5:
the rotary cylinder body 1, the piston combined seal 3, the branch pipe body 6, the branch pipe body seal 13 and the rotary shaft 11 jointly form the oil cylinder.
The piston is formed by integrally welding a piston body 18 and an inner and outer screw sleeve 19. The piston body 18 is arranged in the rotary cylinder body 1, and a piston guide ring 2 and a piston combined seal 3 are arranged on the piston body. The outer circle of the inner and outer spiral sleeve 19 is provided with a first right-handed external spline, an inner hole is provided with a first left-handed internal spline, an inner hole of the inner gear ring 17 is provided with a second right-handed internal spline, the outer surface of the rotary shaft spiral shaft 111 is provided with a second left-handed external spline, the spiral directions of the first spiral external spline and the first spiral internal spline are the same, the first spiral spline and the second spiral external spline are mutually matched to form a first spiral spline pair, the spiral directions of the second spiral internal spline and the second spiral external spline are the same, the first spiral spline pair and the second spiral spline pair are mutually matched to form a second spiral spline pair, and the first spiral spline pair and the second spiral spline pair have opposite spiral directions because the first spiral external spline pair and the second spiral internal spline pair have opposite spiral directions.
The front end of the rotary cylinder body 1 is opened, the inner wall of the opening is an inner conical surface, the space enclosed by the inner conical surface is in a circular truncated cone shape with a large front and a small back and is consistent with the shape of the inner gear ring 17, the inner gear ring 17 is pressed on the inner conical surface of the rotary cylinder body by the branch pipe body 6 through the inner hexagon screws 5 to form axial and radial positioning of the inner gear ring 17 and realize fastening by means of friction force, and a right-handed inner spline I is processed on an inner hole of the inner gear ring 17.
The rotating shaft is formed by welding a rotating shaft screw shaft 111, a screw shaft jacket 112 and a rotating shaft hollow tube 113. The outer surface of the rotating shaft screw shaft 111 is provided with a left-hand external spline II, and the outer sleeve 112 of the rotating screw shaft is provided with a plurality of threaded holes along the circumferential direction. The inner wall of the rear end of the branch pipe body 6 is provided with a mounting groove, a supporting nut 16 is arranged in the mounting groove, thrust washers 15 are arranged between the supporting nut 16 and the inner gear ring 17 and between the supporting nut 16 and the side wall of the mounting groove, supporting bolts are in threaded connection in threaded holes of the supporting nut 16 and the rotary screw shaft outer sleeve 112, the screw shaft outer sleeve 112 is fastened on the outer sides of the inner screw sleeve 19 and the outer screw sleeve 19, and the rotary shaft 11 is axially positioned. The branch pipe body 6 is provided with an O-shaped ring 4 and a branch pipe body seal 13 to form a cylinder seal space for sealing the rotary cylinder body 1 so as to avoid oil leakage. The branch pipe body 6 is provided with a branch pipe body guide ring 14 and a rotating shaft guide ring 7, so as to form radial positioning of the rotating shaft. The rightmost end of the rotating shaft 11 is provided with a plurality of socket head cap screws 10, and the socket head cap screws 10 are responsible for installation connection of related parts and output of rotating torque.
The specific working process of the invention is as follows:
(1) under the condition that oil is fed into the right cavity of the rotary cylinder body 1, when the piston body 18 linearly moves leftwards, the inner and outer spiral sleeves 19 are driven to move leftwards, and under the action of the first spiral spline pair, relative rotary motion between the inner gear ring 17 and the rotary shaft 11 is formed.
Because the inner gear ring 17 is pressed and fixed on the inner conical surface of the rotary cylinder body 1, the inner and outer screw sleeves 19 rotate clockwise (seen from the output end of the drill boom) while moving leftwards. Under the action of the second helical spline pair, the rotary shaft 11 synchronously rotates clockwise (seen from the output end of the drill boom) relative to the inner gear ring 17 and the rotary cylinder body 1. The two clockwise rotations are superimposed to form the clockwise rotation output (as seen from the boom output) of the swivel shaft 11.
(2) Under the condition that oil is fed into the left cavity of the rotary cylinder body, when the piston body 18 moves linearly rightwards, the inner and outer spiral sleeves 19 are driven to move rightwards, and under the action of the first spiral spline pair, relative rotary motion between the inner gear ring 17 and the rotary shaft 11 is formed.
Because the inner gear ring 17 is pressed and fixed on the rotary cylinder body 1, the inner and outer screw sleeves 19 rotate anticlockwise (seen from the output end of the drill boom). Under the action of the spiral spline pair II, the rotary shaft 11 synchronously rotates anticlockwise (seen from the output end of the drill boom) relative to the inner gear ring 17 and the rotary cylinder body 1. The two counterclockwise rotations are superimposed to form a counterclockwise rotation output (as viewed from the boom output end) of the swivel shaft 11.
The step (1) and the step (2) form the rotation output of the rotary shaft 11 relative to the rotary cylinder body 1.
The invention is hung on a drill boom rotating pin shaft 22, the drill boom rotating pin shaft 22 is arranged on a drill boom of a drill jumbo, and the pitching oscillation around the drill boom rotating pin shaft is formed by means of the pushing of a linear oil cylinder pin shaft 21 and a linear oil cylinder additionally arranged outside.
Claims (10)
1. A hydraulic auger arm, comprising: the piston comprises a rotary cylinder body (1), branch pipe bodies (6), a rotary shaft (11), an inner gear ring (17), a piston body (18) and inner and outer screw sleeves (19), wherein the piston body (18) is arranged in the rotary cylinder body (1), the piston body (18) reciprocates in the rotary cylinder body (1), the inner and outer screw sleeves (19) are of a sleeve structure with an opening at the front end and a closed rear end, the rear ends of the inner and outer screw sleeves (19) are fixed on the piston body (18), the inner wall of the opening at the front end of the rotary cylinder body (1) is an inner conical surface, the inner gear ring (17) is arranged at the inner conical surface in a matching manner, the rear end of the branch pipe body (6) is fixed at the front end of the rotary cylinder body (1) through an inner hexagon screw (5), and the inner gear ring (17) is tightly pressed on the inner conical surface; the inner gear ring (17) is annular, a first spiral inner spline is arranged on the inner hole wall of the inner gear ring (17), a first spiral outer spline and a second spiral inner spline which are opposite in spiral direction are respectively arranged on the excircle and the inner hole of the inner and outer spiral sleeves (19), the inner and outer spiral sleeves (19) are inserted into the inner hole of the inner gear ring (17), and the first spiral outer spline of the inner and outer spiral sleeves (19) is connected with the first spiral inner spline of the inner gear ring (17) in a matching manner; the rotary shaft (11) consists of a rotary shaft screw shaft (111), a screw shaft outer sleeve (112) and a rotary shaft hollow pipe (113), the screw shaft outer sleeve (112) is fixedly arranged at the rear end of the rotary shaft hollow pipe (113), the front end of the screw shaft outer sleeve (112) is closed, the rear end of the rotary shaft screw shaft (111) is opened, the rotary shaft screw shaft (111) is fixed in the screw shaft outer sleeve (112), the rotary shaft screw shaft (111), the screw shaft outer sleeve (112) and the rear end of the rotary shaft hollow pipe (113) are all arranged in the branch pipe body (6), an annular space is arranged between the rotary shaft screw shaft (111) and the screw shaft outer sleeve (112), the inner and outer screw sleeves (19) are inserted into the annular space, the inner and outer screw splines two of the inner and outer screw sleeves (19) are matched and connected with the outer screw splines two outside the rotary shaft screw shaft (111), and the screw shaft outer sleeve (112) is fastened outside the inner and outer screw sleeves (19) through a support nut (16) and a support bolt.
2. A hydraulic auger arm according to claim 1, wherein: and the piston body (18) is provided with a piston guide ring (2) and a piston combined seal (3).
3. A hydraulic auger arm according to claim 1, wherein: the rear end of the branch pipe body (6) is pressed on the inner gear ring (17), a mounting groove is formed in the inner wall of the rear end of the branch pipe body (6), the supporting nut (16) is arranged in the mounting groove, thrust washers (15) are arranged between the supporting nut (16) and the inner gear ring (17) and between the supporting nut (16) and the side wall of the mounting groove, and the supporting bolt penetrates through the supporting nut (16) to fasten the outer sleeve (112) of the screw shaft on the outer sides of the inner and outer screw sleeves (19).
4. A hydraulic auger arm according to claim 1 or claim 3, wherein: an O-shaped ring (4) is arranged on the outer wall of the branch pipe body (6), and the O-shaped ring (4) is positioned below the inner hexagonal screw (5); the inner wall of the branch pipe body (6) is provided with a branch pipe body seal (13) and a branch pipe body guide ring (14).
5. A hydraulic auger arm according to claim 1 or claim 3, wherein: and a rotating shaft guide ring (7) is arranged on the outer wall of the rotating shaft (11).
6. A hydraulic auger arm according to claim 1 or claim 3, wherein: the end part of the front end of the branch pipe body (6) is provided with a round nut (9) and a round nut anti-loosening washer (8), the round nut (9) is annular and is arranged on the outer side of the rotating shaft (11), and the round nut anti-loosening washer (8) is arranged between the end part of the front end of the branch pipe body (6) and the round nut (9).
7. A hydraulic auger arm according to claim 1 or claim 3, wherein: the spiral direction of a first spiral external spline of the internal and external spiral sleeve (19) is the same as that of a first spiral internal spline of the internal gear ring (17), and the first spiral external spline is matched with the first spiral internal spline to form a first spiral spline pair; the spiral inner spline II of the inner and outer spiral sleeves (19) and the spiral outer spline II of the rotary shaft spiral shaft (111) have the same spiral direction, and the spiral inner spline II is matched with the spiral outer spline to form a spiral spline pair II; because the spiral direction of the first spiral external spline of the internal and external spiral sleeves is opposite to that of the second spiral internal spline, the first spiral spline pair and the second spiral spline pair are two spiral spline matching pairs with opposite spiral directions.
8. A hydraulic auger arm for a rock drilling rig according to claim 1 or 3, wherein: the front end of the rotating shaft (11) is provided with a plurality of inner hexagon screws (10).
9. A method of using a hydraulic auger arm, using the hydraulic auger arm of claim 7, wherein: the piston body (18) and the inner and outer spiral sleeves (19) form a piston, the piston reciprocates under the pushing of hydraulic oil in the rotary cylinder body (1), the inner gear ring (17) is fastened on the inner conical surface and cannot rotate, the piston does linear motion and simultaneously does rotary motion under the cooperation of the spiral spline pair I, and the rotary shaft (11) does equidirectional rotation under the cooperation of the spiral spline pair II because the spiral spline pair I and the spiral spline pair II have opposite rotation directions.
10. The use method of the hydraulic auger boom according to claim 8, wherein the specific steps are as follows:
(1) under the condition that oil is fed into a right cavity of the rotary cylinder body (1), when the piston body (18) moves linearly leftwards, the inner and outer spiral sleeves (19) are driven to move leftwards, and under the action of a first spiral spline pair, relative rotary motion between the inner gear ring (17) and the rotary shaft (11) is formed;
because the inner gear ring (17) is pressed and fixed on the inner conical surface of the rotary cylinder body (1), the inner and outer screw sleeves (19) move leftwards and rotate clockwise at the same time; under the action of the spiral spline pair II, the rotating shaft (11) synchronously rotates clockwise; the two clockwise rotations are superposed to form clockwise rotation output of the rotating shaft (11);
(2) under the condition that oil is fed into a left cavity of the rotary cylinder body, when the piston body (18) moves linearly to the right, the inner and outer spiral sleeves (19) are driven to move to the right, and relative rotary motion between the inner gear ring (17) and the rotary shaft (11) is formed under the action of the first spiral spline pair;
because the inner gear ring (17) is pressed and fixed on the inner conical surface of the rotary cylinder body (1), the inner and outer helical sleeves (19) rotate anticlockwise; under the action of the spiral spline pair II, the rotating shaft (11) synchronously rotates anticlockwise; the two anticlockwise rotations are overlapped to form anticlockwise rotation output of the rotating shaft (11);
the step (1) and the step (2) form the rotary output of the rotary shaft (11) relative to the rotary cylinder body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210739982.0A CN115288619A (en) | 2022-06-28 | 2022-06-28 | Hydraulic spiral drill arm and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210739982.0A CN115288619A (en) | 2022-06-28 | 2022-06-28 | Hydraulic spiral drill arm and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115288619A true CN115288619A (en) | 2022-11-04 |
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ID=83819555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210739982.0A Pending CN115288619A (en) | 2022-06-28 | 2022-06-28 | Hydraulic spiral drill arm and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115288619A (en) |
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2022
- 2022-06-28 CN CN202210739982.0A patent/CN115288619A/en active Pending
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