CN109798080B - Quick-insertion type water feeder and construction method thereof - Google Patents
Quick-insertion type water feeder and construction method thereof Download PDFInfo
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- CN109798080B CN109798080B CN201910039182.6A CN201910039182A CN109798080B CN 109798080 B CN109798080 B CN 109798080B CN 201910039182 A CN201910039182 A CN 201910039182A CN 109798080 B CN109798080 B CN 109798080B
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Abstract
The invention discloses a quick-insertion type water feeder and a construction method thereof, wherein the quick-insertion type water feeder comprises a mandrel, a bearing and a bearing sleeve which are coaxially and sequentially arranged from inside to outside, and a high-pressure water interface is arranged on the side wall of the mandrel; the power transmission hollow shaft is coaxially and tightly sleeved in the mandrel and can axially move; the closed end of the force transmission hollow shaft is provided with a pressing handle and a rolling body, and the open end of the force transmission hollow shaft is provided with a coaxial core rod; coaxial annular pistons, jaw pushing sleeves and jaws are sequentially arranged between the outer wall of the core rod and the inner wall of the bearing sleeve; the clamping jaw comprises arc-shaped clamping jaw pieces which are circumferentially arranged, and the inner wall of the end part of each clamping jaw piece is a wedge-shaped surface of each clamping jaw piece; a piston block is arranged between the wedge-shaped surface of the claw piece and the outer wall of the core rod, the wall surface of the piston block close to the wedge-shaped surface of the claw piece is a wedge-shaped outer wall, and a first spring along the radial direction of the core rod is arranged between the piston block and the core rod. The invention can realize the safe and reliable quick connection of the water feeder and the internal thread of the drill rod, improve the drilling efficiency and meet the requirements of rotary drilling and high-pressure sealing.
Description
Technical Field
The invention belongs to the technical field of underground coal mine water feeders, and particularly relates to a quick-insertion type water feeder and a construction method thereof.
Background
In the process of underground coal mine drilling, a water feeder is needed to convey high-pressure flushing medium to the interior of a drill rod for deslagging or drive a hole bottom power motor. In the prior art, the water feeder cannot be quickly connected with a drill rod, and the water feeder needs to be frequently assembled and disassembled in the process of additionally installing the drill rod and is usually provided with manual operation of a specially-assigned person. At present, the threaded connection of a water feeder and a drill rod is basically screwed manually, and a pipe wrench is screwed tightly to ensure the connection to be safe and reliable. When the water feeder is screwed and disassembled, larger disassembling force is needed, and the existing connection mode of the water feeder and the drill rod is relatively complex to operate, and wastes time and labor. Therefore, a water feeder capable of being quickly connected with the internal thread of the drill rod and having a sealing function is needed, so that the labor intensity is reduced, and the drilling efficiency is improved.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a quick-insertion type water feeder and a construction method thereof, and overcomes the defects of low drilling efficiency and the like caused by low loading and unloading efficiency between the conventional water feeder and a drill rod.
In order to achieve the purpose, the invention adopts the following technical scheme:
a quick-insertion type water feeder comprises a mandrel, a bearing and a bearing sleeve which are coaxially and sequentially arranged from inside to outside, wherein a high-pressure water interface is arranged on the side wall of the mandrel; the power transmission hollow shaft is coaxially and tightly sleeved in the mandrel and can axially move, one end of the power transmission hollow shaft is closed, and the other end of the power transmission hollow shaft is opened; the high-pressure water interface is communicated with the force transmission hollow shaft in a sealing way;
the closed end of the force transmission hollow shaft is flush with one end of the mandrel and is provided with a pressing handle and a rolling body positioned between the pressing handle and the closed end, and the open end of the force transmission hollow shaft is flush with the other end of the mandrel and is provided with a core rod which can axially move along with the force transmission hollow shaft and is coaxial with the force transmission hollow shaft;
an annular piston, a jaw pushing sleeve and a jaw for assembling and disassembling a drill rod, which can axially move along with the force transmission hollow shaft and are coaxial with the force transmission hollow shaft, are sequentially arranged between the outer wall of the core rod and the inner wall of the bearing sleeve; the clamping jaws comprise arc-shaped clamping jaw pieces which are circumferentially arranged, and the inner walls of the end parts of the clamping jaw pieces are wedge-shaped surfaces of the clamping jaw pieces;
and a piston block is arranged between the wedge-shaped surface of the claw piece and the outer wall of the core rod, the wall surface of the piston block close to the wedge-shaped surface of the claw piece is a wedge-shaped outer wall matched with the wedge-shaped surface of the claw piece, and a first spring along the radial direction of the core rod is arranged between the piston block and the core rod.
The invention also comprises the following technical characteristics:
optionally, the number of the jaw pieces is four, the four jaw pieces are opposite to each other in pairs, the two opposite jaw pieces form a group, each jaw piece comprises an arc-shaped part, one end of each arc-shaped part is in contact with the end part of the jaw pushing sleeve, the other end of each arc-shaped part is connected with an elastic piece, the outer wall of each elastic piece is provided with a thread, the inner wall of the end part of each elastic piece is a wedge-shaped surface of the jaw piece, and the thread distance between the two groups of jaw pieces is half of the thread distance;
each clamping jaw sheet corresponds to one piston block, a dowel bar is connected between every two adjacent piston blocks, and each piston block is connected with one dowel bar.
Optionally, piston grooves are formed in the outer wall of the end of the core rod along the radial direction of the core rod, each piston block is correspondingly arranged in one piston groove, and four piston blocks are uniformly distributed along the circumferential direction of the core rod;
the dowel bar is hinged with the piston block;
the clamping jaw pushing sleeve is fixedly connected with the arc-shaped part through a fixing hole formed in the arc-shaped part.
Optionally, the end of the mandrel close to the opening of the core rod is a three-level annular step surface;
the outer wall of a third-stage annular step surface at the opening end part of the mandrel is tightly attached to the inner wall of the bearing sleeve, the opening end part of the force transmission hollow shaft is an annular edge perpendicular to the axial direction of the force transmission hollow shaft, and the outer wall of the annular edge is in contact with the side wall of the first-stage step at the opening end part of the core rod;
the outer wall of the core rod is a four-stage annular step surface, the inner wall of the bearing sleeve is a two-stage annular step surface, and a coaxial second spring is arranged between the first-stage annular step surface of the core rod and the second-stage annular step surface of the bearing sleeve;
an elastic driving ball is arranged between one end of the annular piston and the three-stage annular step surface of the core rod, the other end of the annular piston is clamped in the outer wall of the clamping jaw pushing sleeve, and a coaxial third spring is arranged between the end part of the annular piston and the first-stage annular step surface of the bearing sleeve;
and a bearing gasket is arranged between the bearing and the three-level annular step surface at the end part of the opening of the mandrel, a bearing snap ring for axially positioning the bearing is arranged between the bearing and the bearing gasket, and the bearing snap ring is fixed on the outer wall of the mandrel.
Optionally, the outer part of the closed end of the force transmission hollow shaft is of a circular truncated cone structure, the pressing handle comprises a pressing section perpendicular to the axial direction of the mandrel and a hand pressing section connected with the pressing section, the end part of the pressing section is hinged with the end part of the mandrel through a hinge shaft, the rolling body is arranged between the pressing section and the circular truncated cone structure of the closed end, and an arc-shaped groove is formed in the pressing section and used for placing the rolling body;
the inner wall of the end part of the mandrel, which is close to the pressing handle, is provided with an annular limiting table for limiting the axial movement of the transmission hollow shaft, so that the reset pressing handle is continuously pushed when the transmission hollow shaft is prevented from moving towards the pressing handle.
Optionally, a bearing retainer ring is arranged between one end of the bearing sleeve close to the pressing handle and the outer wall of the mandrel and used for axially limiting the bearing;
the bearing retainer ring is fixed on the outer wall of the mandrel through a fixing pin;
the two bearings are tightly attached to the mandrel and are arranged along the axial direction of the mandrel, and an annular retaining ring tightly attached to the outer wall of the mandrel is arranged between the two bearings and used for axially positioning the two bearings.
Optionally, sealing rings are arranged between the force transmission hollow shaft and the mandrel, between the mandrel and the bearing sleeve, between the annular piston and the bearing sleeve, between the arc-shaped part of the jaw and the bearing sleeve, and between the annular edge and the end face of the core rod, so as to realize a sealing effect;
and a GREEN ring is filled between the bearing gasket and the three-level annular step surface at the opening end part of the mandrel so as to realize the sealing effect.
The invention also provides a construction method of the quick-insertion type water feeder, which comprises the following steps:
the method comprises the following steps: the pressing handle is pressed down firstly, the pressing handle rotates around the hinged shaft, the rolling body is contacted with the closed end circular truncated cone structure of the force transmission hollow shaft, under the action of the pressing handle, the force transmission hollow shaft moves axially and pushes the core rod, the annular piston and the clamping jaws to move axially, the second spring and the third spring are compressed, the moving speed of the core rod is greater than that of the clamping jaws, the wedge-shaped outer wall of the piston block is far away from the wedge-shaped surface of the clamping jaw, the first spring resets, the clamping jaws shrink, and the elastic sheet of the clamping jaws is inserted into the internal thread of the drill rod;
step two: the pressing handle is loosened, the elastic sheet, the annular piston, the core rod and the force transmission hollow shaft move towards the pressing handle under the reset action of the second spring and the third spring, the wedge-shaped outer wall of the piston block supports the wedge-shaped surface of the claw sheet to open the elastic sheet in the moving process of the elastic sheet, one group of the claw sheets is in contact with the top of the thread of the internal thread of the drill rod due to the fact that the thread pitch of the two groups of the claw sheets is half of the thread pitch, and the other group of the claw sheets can fall into the thread groove of the female joint of the drill rod;
step three: under the action of the piston block, the force transmission hollow rod and the first spring, one group of claw sheets in contact with the top of the thread of the internal thread of the drill rod are extruded, the piston block in contact with the group of claw sheets is compressed, force is transmitted through the force transmission rod, the force transmission rod pushes the piston block at the other end of the piston block outwards to open the other group of claw sheets, and the group of claw sheets are meshed with the internal thread of the drill rod to realize the quick sealing connection of the water feeder and the drill rod.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention has simple operation, small volume and light weight, can realize the safe and reliable quick connection of the water feeder and the internal thread of the drill rod only by operating the pressing handle, avoids the time-consuming and labor-consuming operation of screwing the thread by hand, improves the drilling efficiency and meets the requirements of rotary drilling and high-pressure sealing. The invention is convenient for realizing the automatic instant sealing connection of the water feeder and the drill rod, and is convenient for further realizing the 'automatic' and 'unmanned' drilling under the coal mine.
In the invention, when the pressing handle is pressed down, the pressing handle rotates around the hinged shaft, the rolling body is contacted with the closed end circular truncated cone structure of the force transmission hollow shaft, the force transmission hollow shaft axially moves under the action of the pressing handle, and the core rod, the annular piston and the clamping jaw are all pushed to axially move, so that the second spring and the third spring are compressed, the moving speed of the core rod is higher than that of the clamping jaw, the wedge-shaped outer wall of the piston block is far away from the wedge-shaped surface of the clamping jaw, the first spring resets, the clamping jaw contracts, and the elastic sheet of the clamping jaw is inserted into the internal thread of the drill rod.
In the invention, when the pressing handle is loosened, the elastic sheet, the annular piston, the core rod and the force transmission hollow shaft move towards the pressing handle direction under the reset action of the second spring and the third spring, in the moving process of the elastic sheet, the wedge-shaped outer wall of the piston block supports the wedge-shaped surface of the claw sheet to open the elastic sheet, as the thread pitch difference of the two groups of claw sheets is half of the thread pitch, one group of claw sheets is contacted with the top of the thread of the internal thread of the drill rod, and the other group of claw sheets can fall into the thread groove of the drill rod female joint.
(IV) in the invention, under the action of the piston block, the force transmission hollow rod and the first spring, a group of claw sheets which are contacted with the top of the thread of the internal thread of the drill rod are extruded, the piston block which is contacted with the group of claw sheets is compressed, the force is transmitted through the force transmission rod, the force transmission rod pushes the piston block at the other end outwards to open the other group of claw sheets, and the group of claw sheets are meshed with the internal thread of the drill rod, thereby realizing the quick sealing connection of the water feeder and the drill rod.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a right side view of fig. 1.
Fig. 3 is a schematic structural view of the jaw piece of the present invention.
The reference numerals in the figures denote: 1-mandrel, 2-bearing, 3-bearing sleeve, 4-high pressure water interface, 5-force transmission hollow shaft, 6-press handle, 7-annular piston, 8-rolling body, 9-jaw, 10-core rod, 11-jaw pushing sleeve, 12-piston block, 13-first spring, 14-bearing washer, 15-dowel bar, 16-second spring, 17-elastic driving ball, 18-third spring, 19-bearing snap ring, 20-bearing retainer ring, 21-annular retainer ring and 22-Glare ring;
(6-1) -a pressing section, (6-2) -a hand pressing section, (6-3) -an arc-shaped groove;
(9-1) -arc part, (9-2) -elastic sheet.
Detailed Description
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
Example 1:
as shown in fig. 1 to 3, the present embodiment provides a quick-insertion water feeder, which includes a mandrel 1, a bearing 2, and a bearing sleeve 3 coaxially arranged in sequence from inside to outside, wherein a high-pressure water port 4 is installed on a side wall of the mandrel 1; the power transmission hollow shaft 5 is coaxially and tightly sleeved in the mandrel 1 and can axially move, one end of the power transmission hollow shaft is closed, and the other end of the power transmission hollow shaft is opened; the high-pressure water interface 4 is hermetically communicated with the force transmission hollow shaft 5 and is used for introducing high-pressure water into the force transmission hollow shaft 5; the closed end of the force transmission hollow shaft 5 is flush with one end of the mandrel 1 and is provided with a pressing handle 6 and a rolling body 8 positioned between the pressing handle 6 and the closed end, and the open end of the force transmission hollow shaft 5 is flush with the other end of the mandrel 1 and is provided with a core rod 10 which can axially move along with the force transmission hollow shaft 5 and is coaxial with the force transmission hollow shaft 5; an annular piston 7 which can axially move along with the force transmission hollow shaft 5 and is coaxial with the force transmission hollow shaft 5, a jaw pushing sleeve 11 and a jaw 9 for assembling and disassembling a drill rod are sequentially arranged between the outer wall of the core rod 10 and the inner wall of the bearing sleeve 3; the clamping jaw 9 comprises arc-shaped clamping jaw pieces which are circumferentially arranged, and the inner wall of the end part of each clamping jaw piece is a wedge-shaped surface of each clamping jaw piece; a piston block 12 is arranged between the wedge-shaped surface of the claw sheet and the outer wall of the core rod 10, the wall surface of the piston block 12 close to the wedge-shaped surface of the claw sheet is a wedge-shaped outer wall matched with the wedge-shaped surface of the claw sheet, and a first spring 13 along the radial direction of the core rod 10 is arranged between the piston block 12 and the core rod 10.
Specifically, the number of the jaw pieces is four, the four jaw pieces are opposite in pairs, the two opposite jaw pieces form a group, each jaw piece comprises an arc-shaped part 9-1, one end of each arc-shaped part is in contact with the end part of the jaw pushing sleeve 11, the other end of each arc-shaped part 9-1 is connected with an elastic piece 9-2, the outer wall of each elastic piece 9-1 is provided with a thread tooth, the inner wall of the end part of each elastic piece 9-2 is a jaw piece wedge-shaped surface, and the thread teeth of the two groups of jaw pieces have a half thread pitch; each claw sheet corresponds to one piston block 12, a dowel bar 15 is connected between every two adjacent piston blocks 12, and each piston block 12 is connected with one dowel bar 15. Therefore, when the elastic piece of the jack catch is inserted into the internal thread of the drill rod, the elastic piece, the annular piston, the core rod and the force transmission hollow shaft move towards the direction of the pressing handle under the reset action of the second spring and the third spring, the wedge-shaped outer wall of the piston block supports the wedge-shaped surface of the jack catch piece to open the elastic piece in the moving process of the elastic piece, and as the difference between the thread teeth of the two sets of jack catch pieces is half of the thread pitch, one set of jack catch piece is contacted with the top of the internal thread of the drill rod, and the other set of jack catch piece can fall into the thread groove of the female joint of; under the action of the piston block, the force transmission hollow rod and the first spring, one group of claw sheets in contact with the top of the thread of the internal thread of the drill rod are extruded, the piston block in contact with the group of claw sheets is compressed, force is transmitted through the force transmission rod, the force transmission rod pushes the piston block at the other end of the piston block outwards to open the other group of claw sheets, and the group of claw sheets are meshed with the internal thread of the drill rod to realize the quick sealing connection of the water feeder and the drill rod.
Piston grooves are formed in the outer wall of the end portion of the core rod 10 along the direction of the core rod 10, each piston block 12 is correspondingly arranged in one piston groove, and the four piston blocks 12 are uniformly distributed along the circumferential direction of the core rod 10; the dowel bar 15 is hinged with the piston block 12; the claw pushing sleeve 11 is fixedly connected with the arc-shaped part 9-1 through a fixing hole arranged on the arc-shaped part 9-1.
The end part of the opening of the mandrel 1 close to the core rod 10 is a three-stage annular step surface; the outer wall of the third-stage annular step surface at the opening end part of the mandrel 1 is tightly attached to the inner wall of the bearing sleeve 3, the opening end part of the force transmission hollow shaft 5 is an annular edge vertical to the axial direction of the force transmission hollow shaft 5, and the outer wall of the annular edge is contacted with the side wall of the first-stage step at the opening end part of the core rod 10; the outer wall of the core rod 10 is a four-stage annular step surface, the inner wall of the bearing sleeve 3 is a two-stage annular step surface, and a coaxial second spring 16 is arranged between the first-stage annular step surface of the core rod 10 and the second-stage annular step surface of the bearing sleeve 3; an elastic driving ball 17 is arranged between one end of the annular piston 7 and the three-stage annular step surface of the core rod 10, so that the moving speed of the core rod 10 is higher than that of the clamping jaws 9, the other end of the annular piston 7 is clamped in the outer wall of the clamping jaw pushing sleeve 11, and a coaxial third spring 18 is arranged between the end part of the annular piston 7 and the first-stage annular step surface of the bearing sleeve 3; a bearing gasket 14 is arranged between the bearing 2 and the three-stage annular step surface at the opening end part of the mandrel 1, a bearing snap ring 19 for axially positioning the bearing 2 is arranged between the bearing 2 and the bearing gasket 14, and the bearing snap ring 19 is fixed on the outer wall of the mandrel 1.
The outer part of the closed end of the force transmission hollow shaft 5 is of a circular truncated cone structure, the pressing handle 6 comprises a downward pressing section 6-1 vertical to the axial direction of the mandrel 1 and a hand pressing section 6-2 connected with the downward pressing section 6-1, the end part of the downward pressing section 6-1 is hinged with the end part of the mandrel 1 through a hinged shaft, a rolling body 8 is arranged between the downward pressing section 6-1 and the circular truncated cone structure of the closed end, and an arc-shaped groove 6-3 is arranged on the downward pressing section 6-1 and used for placing the rolling body 8; the inner wall of the end part of the mandrel 1 close to the pressing handle 6 is provided with an annular limiting table for limiting the axial movement of the transmission hollow shaft 5 and preventing the transmission hollow shaft 5 from continuously pushing the reset pressing handle 6 when moving to the pressing handle 6.
A bearing retainer ring 20 is arranged between one end of the bearing sleeve 3 close to the pressing handle 6 and the outer wall of the mandrel 1 and used for axially limiting the bearing 2; the bearing retainer ring 20 is fixed on the outer wall of the mandrel 1 through a fixing pin; the two bearings 2 are tightly attached to the mandrel 1 and are arranged along the axial direction of the mandrel 1, and an annular retaining ring 21 tightly attached to the outer wall of the mandrel 1 is arranged between the two bearings 2 and used for axially positioning the two bearings 2.
Sealing rings are arranged between the force transmission hollow shaft 5 and the mandrel 1, between the mandrel 1 and the bearing sleeve 3, between the annular piston 7 and the bearing sleeve 3, between the arc-shaped part 9-1 of the clamping jaw 9 and the bearing sleeve 3 and between the annular edge and the end face of the core rod 10 for realizing the sealing function; and a GREEN 22 is filled between the bearing gasket 14 and the three-stage annular step surface at the opening end part of the mandrel 1 to realize the sealing effect.
Example 2:
the embodiment also provides a construction method of the quick-insertion type water feeder, which comprises the following steps:
the method comprises the following steps: the pressing handle is pressed down firstly, the pressing handle rotates around the hinged shaft, the rolling body is contacted with the closed end circular truncated cone structure of the force transmission hollow shaft, under the action of the pressing handle, the force transmission hollow shaft moves axially and pushes the core rod, the annular piston and the clamping jaws to move axially, the second spring and the third spring are compressed, the moving speed of the core rod is greater than that of the clamping jaws, the wedge-shaped outer wall of the piston block is far away from the wedge-shaped surface of the clamping jaw, the first spring resets, the clamping jaws shrink, and the elastic sheet of the clamping jaws is inserted into the internal thread of the drill rod;
step two: the pressing handle is loosened, the elastic sheet, the annular piston, the core rod and the force transmission hollow shaft move towards the pressing handle under the reset action of the second spring and the third spring, the wedge-shaped outer wall of the piston block supports the wedge-shaped surface of the claw sheet to open the elastic sheet in the moving process of the elastic sheet, one group of the claw sheets is in contact with the top of the thread of the internal thread of the drill rod due to the fact that the thread pitch of the two groups of the claw sheets is half of the thread pitch, and the other group of the claw sheets can fall into the thread groove of the female joint of the drill rod;
step three: under the action of the piston block, the force transmission hollow rod and the first spring, one group of claw sheets in contact with the top of the thread of the internal thread of the drill rod are extruded, the piston block in contact with the group of claw sheets is compressed, force is transmitted through the force transmission rod, the force transmission rod pushes the piston block at the other end of the piston block outwards to open the other group of claw sheets, and the group of claw sheets are meshed with the internal thread of the drill rod to realize the quick sealing connection of the water feeder and the drill rod.
Claims (7)
1. A quick-insertion type water feeder comprises a mandrel (1), a bearing (2) and a bearing sleeve (3) which are coaxially and sequentially arranged from inside to outside, wherein a high-pressure water interface (4) is arranged on the side wall of the mandrel (1); the device is characterized by also comprising a force transmission hollow shaft (5) which is coaxially and tightly sleeved in the mandrel (1) and can axially move, wherein one end of the force transmission hollow shaft is closed, and the other end of the force transmission hollow shaft is opened; the high-pressure water interface (4) is communicated with the force transmission hollow shaft (5) in a sealing way;
the closed end of the force transmission hollow shaft (5) is flush with one end of the mandrel (1) and is provided with a pressing handle (6) and a rolling body (8) positioned between the pressing handle (6) and the closed end, and the open end of the force transmission hollow shaft (5) is flush with the other end of the mandrel (1) and is provided with a core bar (10) which can axially move along with the force transmission hollow shaft (5) and is coaxial with the force transmission hollow shaft (5);
an annular piston (7) which can axially move along with the force transmission hollow shaft (5) and is coaxial with the force transmission hollow shaft (5), a jaw pushing sleeve (11) and a jaw (9) for assembling and disassembling a drill rod are sequentially arranged between the outer wall of the core rod (10) and the inner wall of the bearing sleeve (3); the clamping jaw (9) comprises arc-shaped clamping jaw pieces which are circumferentially arranged, and the inner wall of the end part of each clamping jaw piece is a wedge-shaped surface of each clamping jaw piece;
a piston block (12) is arranged between the wedge-shaped surface of the claw piece and the outer wall of the core rod (10), the wall surface of the piston block (12) close to the wedge-shaped surface of the claw piece is a wedge-shaped outer wall matched with the wedge-shaped surface of the claw piece, and a first spring (13) along the radial direction of the core rod (10) is arranged between the piston block (12) and the core rod (10);
the end part, close to the opening of the core rod (10), of the core shaft (1) is a three-level annular step surface;
the outer wall of a third-stage annular step surface at the opening end part of the mandrel (1) is tightly attached to the inner wall of the bearing sleeve (3), the opening end part of the force transmission hollow shaft (5) is an annular edge which is vertical to the axial direction of the force transmission hollow shaft (5), and the outer wall of the annular edge is contacted with the side wall of a first-stage step at the opening end part of the core rod (10);
the outer wall of the core rod (10) is a four-level annular step surface, the inner wall of the bearing sleeve (3) is a two-level annular step surface, and a coaxial second spring (16) is arranged between the first-level annular step surface of the core rod (10) and the second-level annular step surface of the bearing sleeve (3);
an elastic driving ball (17) is arranged between one end of the annular piston (7) and the three-stage annular step surface of the core rod (10), the other end of the annular piston (7) is clamped in the outer wall of the clamping jaw pushing sleeve (11), and a coaxial third spring (18) is arranged between the end part of the annular piston (7) and the first-stage annular step surface of the bearing sleeve (3);
be equipped with bearing washer (14) between the tertiary annular step face of the opening tip of bearing (2) and dabber (1), be equipped with between bearing (2) and bearing washer (14) and be used for carrying out axial positioning's bearing snap ring (19) to bearing (2), bearing snap ring (19) are fixed on dabber (1) outer wall.
2. The quick-insertion water feeder according to claim 1, characterized in that the four jaw pieces are four, four jaw pieces are opposite to each other in pairs, and two opposite jaw pieces are in one group, each jaw piece comprises an arc-shaped part (9-1) with one end connected with the end part of the jaw pushing sleeve (11), the other end of the arc-shaped part (9-1) is connected with an elastic piece (9-2) with an outer wall provided with thread teeth, the inner wall of the end part of the elastic piece (9-2) is a wedge surface of the jaw piece, and the thread teeth of the two groups of jaw pieces are separated by one-half thread pitch;
each clamping jaw sheet corresponds to one piston block (12), a dowel bar (15) is connected between every two adjacent piston blocks (12), and each piston block (12) is connected with one dowel bar (15).
3. The quick-insertion water feeder according to claim 2, characterized in that piston grooves are arranged on the outer wall of the end of the core bar (10) along the radial direction of the core bar (10), each piston block (12) is correspondingly arranged in one piston groove, and four piston blocks (12) are uniformly distributed along the circumferential direction of the core bar (10);
the dowel bar (15) is hinged with the piston block (12);
the claw pushing sleeve (11) is fixedly connected with the arc-shaped part (9-1) through a fixing hole formed in the arc-shaped part (9-1).
4. The quick-insertion type water feeder according to claim 1, wherein the closed end of the force transmission hollow shaft (5) is externally provided with a circular truncated cone structure, the pressing handle (6) comprises a pressing section (6-1) perpendicular to the axial direction of the mandrel (1) and a hand pressing section (6-2) connected with the pressing section (6-1), the end part of the pressing section (6-1) is hinged with the end part of the mandrel (1) through a hinged shaft, the rolling body (8) is arranged between the pressing section (6-1) and the circular truncated cone structure at the closed end, and an arc-shaped groove (6-3) is arranged on the pressing section (6-1) and used for placing the rolling body (8);
the inner wall of the end part of the mandrel (1) close to the pressing handle (6) is provided with an annular limiting table for limiting the axial movement of the transmission hollow shaft (5) and preventing the transmission hollow shaft (5) from continuously pushing the pressing handle (6) which is reset when moving to the pressing handle (6).
5. The quick-insertion water feeder according to claim 1, characterized in that a bearing retainer ring (20) is arranged between one end of the bearing sleeve (3) close to the press handle (6) and the outer wall of the mandrel (1) for axially limiting the bearing (2);
the bearing retainer ring (20) is fixed on the outer wall of the mandrel (1) through a fixing pin;
the two bearings (2) are tightly attached to the mandrel (1) and are distributed along the axial direction of the mandrel (1), and an annular retaining ring (21) tightly attached to the outer wall of the mandrel (1) is arranged between the two bearings (2) and used for axially positioning the two bearings (2).
6. The quick-insertion water feeder according to any one of claims 1 to 5, characterized in that sealing rings are arranged between the force-transmitting hollow shaft (5) and the mandrel (1), between the mandrel (1) and the bearing sleeve (3), between the annular piston (7) and the bearing sleeve (3), between the arc-shaped part (9-1) of the jaw (9) and the bearing sleeve (3) and between the annular edge and the end face of the core rod (10) for sealing;
and a GREEN ring (22) is filled between the bearing gasket (14) and the three-stage annular step surface at the opening end part of the mandrel (1) to realize the sealing effect.
7. A construction method for adopting the quick-insertion type water feeder of claim 6 is characterized by comprising the following steps:
the method comprises the following steps: the pressing handle is pressed down firstly, the pressing handle rotates around the hinged shaft, the rolling body is contacted with the closed end circular truncated cone structure of the force transmission hollow shaft, under the action of the pressing handle, the force transmission hollow shaft moves axially and pushes the core rod, the annular piston and the clamping jaws to move axially, the second spring and the third spring are compressed, the moving speed of the core rod is greater than that of the clamping jaws, the wedge-shaped outer wall of the piston block is far away from the wedge-shaped surface of the clamping jaw, the first spring resets, the clamping jaws shrink, and the elastic sheet of the clamping jaws is inserted into the internal thread of the drill rod;
step two: the pressing handle is loosened, the elastic sheet, the annular piston, the core rod and the force transmission hollow shaft move towards the pressing handle under the reset action of the second spring and the third spring, the wedge-shaped outer wall of the piston block supports the wedge-shaped surface of the claw sheet to open the elastic sheet in the moving process of the elastic sheet, one group of the claw sheets is in contact with the top of the thread of the internal thread of the drill rod due to the fact that the thread pitch of the two groups of the claw sheets is half of the thread pitch, and the other group of the claw sheets can fall into the thread groove of the female joint of the drill rod;
step three: under the action of the piston block, the dowel bar and the first spring, one group of claw sheets contacting with the top of the thread of the internal thread of the drill rod are extruded, the piston block contacting with the group of claw sheets is compressed, the dowel bar transmits force, the dowel bar pushes the piston block at the other end out, the other group of claw sheets are opened, and the group of claw sheets are meshed with the internal thread of the drill rod, so that the quick sealing connection of the water feeder and the drill rod is realized.
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| CN109798080B true CN109798080B (en) | 2020-11-27 |
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| SU1305297A1 (en) * | 1985-11-19 | 1987-04-23 | Украинский научно-исследовательский и проектно-конструкторский институт подземной гидравлической добычи угля Научно-производственного объединения "Углемеханизация" | Quick-release lock of drilling rods |
| CN101725342A (en) * | 2009-12-02 | 2010-06-09 | 煤炭科学研究总院西安研究院 | Hollow cable type directed water conveying device |
| CN202131973U (en) * | 2011-07-09 | 2012-02-01 | 平顶山冠宏矿山技术装备有限公司 | Full-hydraulic gallery drilling machine for drilling holes along soft coal layer of coal mine |
| CN102926686A (en) * | 2012-11-01 | 2013-02-13 | 三一重型装备有限公司 | Directional water feeder and directional drilling machine |
| CN202788637U (en) * | 2012-06-15 | 2013-03-13 | 四川省华蓥山煤业股份有限公司绿水洞煤矿 | Drill pipe water supplying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1305297A1 (en) * | 1985-11-19 | 1987-04-23 | Украинский научно-исследовательский и проектно-конструкторский институт подземной гидравлической добычи угля Научно-производственного объединения "Углемеханизация" | Quick-release lock of drilling rods |
| CN101725342A (en) * | 2009-12-02 | 2010-06-09 | 煤炭科学研究总院西安研究院 | Hollow cable type directed water conveying device |
| CN202131973U (en) * | 2011-07-09 | 2012-02-01 | 平顶山冠宏矿山技术装备有限公司 | Full-hydraulic gallery drilling machine for drilling holes along soft coal layer of coal mine |
| CN202788637U (en) * | 2012-06-15 | 2013-03-13 | 四川省华蓥山煤业股份有限公司绿水洞煤矿 | Drill pipe water supplying device |
| CN102926686A (en) * | 2012-11-01 | 2013-02-13 | 三一重型装备有限公司 | Directional water feeder and directional drilling machine |
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| CN109798080A (en) | 2019-05-24 |
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