CN214221120U - Rear clamping assembly of drilling machine - Google Patents
Rear clamping assembly of drilling machine Download PDFInfo
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- CN214221120U CN214221120U CN202120214234.1U CN202120214234U CN214221120U CN 214221120 U CN214221120 U CN 214221120U CN 202120214234 U CN202120214234 U CN 202120214234U CN 214221120 U CN214221120 U CN 214221120U
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Abstract
The utility model provides a rear clamping assembly of a drilling machine, which belongs to the technical field of drilling machine accessories and comprises a gear box, wherein a driving shaft is arranged on an output end, a rear clamping device is arranged on the driving shaft, and telescopic oil cylinders are symmetrically arranged on two sides of the driving shaft; the rear holder comprises a rotary sleeve, a taper sleeve, a feeding sleeve, a slip and an oil cylinder supporting sleeve; the rear end of the rotary sleeve is fixedly connected with the driving shaft, and strip-shaped holes are formed in the rotary sleeve at equal intervals along the circumferential direction; the taper sleeve is sleeved outside the rotating sleeve, and the small end face is fixedly connected with the front end of the rotating sleeve; the feeding sleeve is sleeved outside the rotating sleeve in a sliding manner; the slips are in radial sliding fit with the front end of the feeding sleeve, and the slips are positioned in the strip-shaped holes; the oil cylinder support sleeve is rotatably sleeved outside the feeding sleeve; two ends of the telescopic oil cylinder are respectively and rotatably connected with the box body and the oil cylinder supporting sleeve. The slips are controlled to clamp the drill rod through the two external telescopic oil cylinders, so that the whole oil distribution assembly is omitted, the maintenance of the oil distribution assembly is avoided, and a piston and various sealing pieces do not need to be installed in a rear clamp holder.
Description
Technical Field
The utility model belongs to the technical field of the rig accessory, a centre gripping assembly behind rig is specifically disclosed.
Background
The drilling machine rear clamping assembly is an important moving part in the working state of the drilling machine and comprises a gear box, a rear clamping device and an oil distribution assembly, wherein the rear clamping device and the oil distribution assembly are arranged on two sides of the gear box, the drilling machine rear clamping assembly is arranged on a propelling mechanism of the drilling machine, the drilling machine can drill in a coal seam, fastening force is mainly applied to a drill rod through slips of the rear clamping device, the gear box drives the drill rod to rotate, the propelling mechanism drives the drill rod to move back and forth to enter the working state, and the oil distribution assembly is used for providing hydraulic oil for the rear clamping device. The applicant designs a large-torque drilling machine rear clamp and an oil distribution assembly (CN 202020105865.5) thereof, wherein the rear clamp adopts a built-in piston, an oil distribution shell of the oil distribution assembly is fixed on a gear box, an oil path is arranged on a liner connected with the oil distribution shell through a bearing, the oil path of the liner is connected with an oil port of the rear clamp through a long hole drilled on a drive shaft of the gear box, and the liner is clamped and rotated subsequently. During use, the following problems exist:
1. the sealing element used for ensuring the sealing performance of the piston in the rear clamp holder belongs to an easily worn element, and needs to be disassembled and replaced frequently, and the clamp holder is large in engineering quantity and difficult to replace after underground disassembly;
2. the inner liner and the oil distribution shell move relatively, the rotary seal is easy to damage for a long time, and the failure rate of the oil distribution assembly is high.
Hydraulic motor and stopper assembly are in the homonymy of gear box in the rig at present, and the friction disc that moves in the stopper in the pit is wearing and tearing easily under long-term running state, leads to the brake force not enough, needs the periodic replacement, need tear the pipeline that hydraulic motor and hydraulic motor are connected earlier when dismantling the stopper, takes trouble and takes a lot of work, and efficiency is not high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a centre gripping assembly behind rig to improve the problem in the background art.
In order to achieve the purpose, the utility model provides a rear clamping assembly of a drilling machine, which comprises a gear box, wherein the box body of the gear box is provided with an input end and an output end, the output end is provided with a driving shaft, the driving shaft is provided with a rear clamping device, and two sides of the driving shaft are symmetrically provided with telescopic oil cylinders; the rear holder comprises a rotary sleeve, a taper sleeve, a feeding sleeve, a slip and an oil cylinder supporting sleeve; the rear end of the rotary sleeve is fixedly connected with the driving shaft, and more than two strip-shaped holes are formed in the rotary sleeve at equal intervals along the circumferential direction; the taper sleeve is sleeved outside the rotating sleeve, and the small end face is fixedly connected with the front end of the rotating sleeve; the feeding sleeve is sleeved outside the rotating sleeve in a sliding manner; the slips are in radial sliding fit with the front end of the feeding sleeve, the slips are positioned in the strip-shaped holes, and the front end of the slips is positioned between the large end surface of the taper sleeve and the rotating sleeve; the oil cylinder support sleeve is rotatably sleeved outside the feeding sleeve; two ends of the telescopic oil cylinder are respectively and rotatably connected with the box body and the oil cylinder supporting sleeve to push the oil cylinder supporting sleeve and the feeding sleeve to axially move along the rotating sleeve.
Furthermore, the front end of the feeding sleeve is provided with an annular groove; the slips include grip block and fixture block, and the fixture block is installed in the ring channel through the connecting pin that radially sets up, and the radial dimension of fixture block is less than the radial dimension of ring channel.
Furthermore, the clamping block is a right-angle trapezoidal block, the clamping block is arranged on the inclined plane of the clamping block, and the inclined angle of the clamping block is matched with the inclined angle of the taper sleeve.
Furthermore, a bearing and a wear-resistant ring are sleeved outside the feeding sleeve, the oil cylinder supporting sleeve is rotatably connected with the feeding sleeve through the bearing, and the oil cylinder supporting sleeve is in rotating contact with the wear-resistant ring.
Furthermore, the input end of the gear box is positioned at the rear side of the box body, a brake is arranged at the position, corresponding to the input end, of the front side of the box body, and the brake is a spring brake hydraulic pressure release type brake.
Further, the input end of the gear box comprises an inner gear ring, a planet carrier, a central gear and a planet gear; the front end of the inner gear ring is fixed at the rear side of the box body; the planet carrier comprises a wheel disc sleeve, a shaft sleeve I and a shaft sleeve II, wherein the shaft sleeve I and the shaft sleeve II are arranged on two sides of the wheel disc sleeve; the central gear is rotatably arranged in the planet carrier, the wheel disc is positioned in the wheel disc sleeve, and the wheel shaft is positioned in the shaft sleeve II and is connected with the input device; the plurality of planet wheels are uniformly meshed on the outer side of the central gear, the wheel shaft is rotationally connected with the wheel disc sleeve, and the wheel disc penetrates through the through hole to be meshed with the inner gear ring; the brake is connected with the box body through a connecting sleeve and comprises a shell, a friction plate fixing frame, an end cover frame, a friction plate group, a piston, a spring seat and a spring I; the rear end of the connecting sleeve is fixed at the front side of the box body, the front end of the connecting sleeve is connected with the rear end of the shell, and the connecting sleeve is provided with an oil hole; the shell is sequentially provided with a piston mounting hole I and a piston mounting hole II from front to back; the friction plate fixing frame is arranged in the connecting sleeve and the box body and comprises a fixing sleeve and a fixing shaft; the front end of the fixed sleeve is opened, the rear end of the fixed sleeve is closed, a plurality of open slots are formed in the circumferential surface, and the front end of the fixed sleeve is connected with the rear end of the shell to form a friction plate mounting cavity; the fixed shaft is arranged at the rear end of the fixed sleeve and is arranged in the shaft sleeve I through an axially arranged key and a key groove; the end cover frame comprises an end cover and an end cover shaft, and the end cover closes the front end of the shell; the end cover shaft comprises a spline section and a smooth section for connecting the spline section and the end cover shaft, the end cover shaft penetrates through the shell and extends into the fixed sleeve, and the rear end of the end cover shaft is connected with the fixed sleeve; the friction plate group comprises a plurality of dynamic friction plates and static friction plates which are arranged in the friction plate mounting cavity, and the dynamic friction plates and the static friction plates are sleeved on the spline section in a staggered manner; the dynamic friction plate is a circular plate with a clamping plate arranged on the outer edge, and the clamping plate is clamped in the open slot; the static friction plate is a circular ring-shaped plate with spline grooves at the inner edge, and the spline grooves are matched with the spline sections; the piston is slidably arranged on the smooth section in a penetrating mode and comprises a piston head and a piston column, a spring seat is sleeved outside the piston column, and the piston head and the spring seat are both located in the piston mounting hole I; a plurality of springs I are arranged between the spring seat and the piston head, two ends of each spring I are connected with the spring seat and the piston head respectively, and the springs I apply force to the piston to enable the piston column to penetrate through the piston mounting hole II to compress the friction plate set.
Furthermore, a sealing gasket I is sleeved on the spline section between the friction plate group and the shell, and a spline groove matched with the spline section is formed in the inner edge of the sealing gasket I; the smooth section between sealed I and the piston post of filling up is gone up the cover and is equipped with sealed pad II, is provided with the sealed mounting hole that fills up that is used for the sealed pad II of installation on the casing.
Furthermore, the rear end of the end cover shaft is provided with a thimble hole, the flexible thimble is connected with the thimble hole through a spring II, and the rear end of the flexible thimble is contacted with the fixed sleeve.
Furthermore, the rear end of the inner gear ring is connected with an input device connecting disc, and the input device connecting disc is rotatably connected with the shaft sleeve II.
Furthermore, the end cover is provided with an exhaust hole.
The utility model discloses following beneficial effect has:
1. in the utility model, two telescopic oil cylinders extend out to drive the oil cylinder support sleeve, the feeding sleeve and the slips to move forwards, the slips move towards the inside of the rotary sleeve under the compression of the conical inner wall of the taper sleeve to clamp the drill rod, and the drive shaft drives the rotary sleeve, the drill rod, the slips and the feeding sleeve to rotate; the two telescopic oil cylinders contract to drive the oil cylinder supporting sleeve, the feeding sleeve and the slips to move backwards, and the slips positioned below move towards the outside of the rotating sleeve under the action of self gravity to loosen the drill rod; the slips are controlled to clamp the drill rod through the two external telescopic oil cylinders, so that the whole oil distribution assembly is omitted, the maintenance of the oil distribution assembly is avoided, a piston and various sealing pieces do not need to be installed in the rear clamp holder, the structure of the rear clamp holder is greatly simplified, the maintenance frequency is reduced, and the complex machining process of punching a long hole on the driving shaft is omitted;
2. the input end and the brake are respectively arranged at two sides of the box body, and only the brake is required to be disassembled when the brake is overhauled without disassembling input devices such as a hydraulic motor and the like;
3. the brake has compact structure and good braking effect, and is integrally connected with the connecting sleeve through the shell through the brake, so that the brake is convenient to assemble and disassemble.
Drawings
FIG. 1 is a perspective view of a rear clamping assembly of the drilling machine;
FIG. 2 is an elevation view of the rear clamping assembly of the drill;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is an enlarged view of portion A of FIG. 4;
fig. 6 is a fitting diagram of the carrier and the brake.
Wherein, the names corresponding to the reference numbers are:
1-a box body; 2-a drive shaft; 3, a telescopic oil cylinder; 4-rotating the sleeve; 4.1-strip-shaped holes; 5-taper sleeve; 6-feeding sleeve; 6.1-ring groove; 7-slips; 8-oil cylinder supporting sleeve; 9-connecting pin; 10-a bearing; 11-a wear ring; 12-an annulus gear; 13-a planet carrier; 14-a sun gear; 15-a planet wheel; 16-a connecting sleeve; 16.1-oil hole; 17-a housing; 18-friction plate holder; 19-end cap holder; 19.1-vent hole; 20-a piston; 21-spring seats; 22-spring I; 23-dynamic friction plate; 24-static friction plates; 25-sealing gasket I; 26-gasket II; 27-a flexible thimble; 28-spring II; 29-input device interface pad; 30-an input gear; 31-an output gear; 32-soft adjusting head.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment provides a rear clamping assembly of a drilling machine, which comprises a gear box, wherein an input end and an output end are arranged on a box body 1 of the gear box, a driving shaft 2 is arranged on the output end, a rear clamping device is arranged on the driving shaft 2, and telescopic oil cylinders 3 are symmetrically arranged on two sides of the driving shaft 2; the rear holder comprises a rotating sleeve 4, a taper sleeve 5, a feeding sleeve 6, a slip 7 and an oil cylinder supporting sleeve 8; the rear end of the rotary sleeve 4 is fixedly connected with the driving shaft 2, and more than two strip-shaped holes 4.1 are arranged at equal intervals along the circumferential direction; the taper sleeve 5 is sleeved outside the rotary sleeve 4, and the small end face is fixedly connected with the front end of the rotary sleeve 4; the feed sleeve 6 is sleeved outside the rotating sleeve 4 in a sliding manner; the slips 7 are in radial sliding fit with the front end of the feeding sleeve 6, the slips 7 are positioned in the strip-shaped holes 4.1, and the front end of the slips 7 is positioned between the large end surface of the taper sleeve 5 and the rotating sleeve 4; the oil cylinder support sleeve 8 is rotatably sleeved outside the feeding sleeve 6; two ends of the telescopic oil cylinder 3 are respectively rotatably connected with the box body 1 and the oil cylinder supporting sleeve 8, and the oil cylinder supporting sleeve 8 and the feeding sleeve 6 are pushed to axially move along the rotating sleeve 4.
In the rear clamping assembly of the drilling machine, two telescopic oil cylinders 3 extend out to drive an oil cylinder supporting sleeve 8, a feeding sleeve 6 and a slip 7 to move forwards, the slip 7 moves towards the inside of a rotating sleeve 4 under the compression of the conical inner wall of a taper sleeve 5 to clamp a drill rod, and a driving shaft 2 drives the rotating sleeve 4, the drill rod, the slip 7 and the feeding sleeve 6 to rotate; the two telescopic oil cylinders 3 contract to drive the oil cylinder supporting sleeve 8, the feeding sleeve 6 and the slips 7 to move backwards, and the slips 7 positioned below move towards the outside of the rotating sleeve 4 under the action of self gravity to loosen the drill rod; the slips 7 are controlled by the two external telescopic oil cylinders 3 to clamp the drill rod, so that the whole oil distribution assembly is omitted, the maintenance of the oil distribution assembly is avoided, a piston and various sealing pieces do not need to be installed in the rear clamp holder, the structure of the rear clamp holder is greatly simplified, the maintenance frequency is reduced, and the complex machining process of punching a long hole in the driving shaft 2 is omitted. Slips 7 and bar hole 4.1 one-to-one guarantee that drive shaft 2 stops to have at least one slips 7 to move to the swivel mount 4 outside under self action of gravity after the rotation. In this embodiment, the number of the slips 7 and the strip-shaped holes 4.1 is three.
Further, the front end of the feeding sleeve 6 is provided with an annular groove 6.1; the slips 7 comprise clamping blocks and clamping blocks, the clamping blocks are installed in the annular groove 6.1 through the connecting pins 9 which are radially arranged, and the radial size of the clamping blocks is smaller than that of the annular groove 6.1, so that the slips 7 can move radially along the connecting pins 9.
Furthermore, the clamping block is a right-angle trapezoidal block, the clamping block is arranged on the inclined plane of the clamping block, and the inclined plane of the clamping block is matched with the inclined plane of the taper sleeve 5, so that the inclined plane of the clamping block is attached to the tapered inner wall of the taper sleeve 5.
Furthermore, a bearing 10 and a wear-resistant ring 11 are sleeved outside the feeding sleeve 6, and the oil cylinder support sleeve 8 is rotatably connected with the feeding sleeve 6 through the bearing 10; the oil cylinder supporting sleeve 8 is in rotating contact with the wear-resistant ring 11 and is not in direct contact with the feeding sleeve 6, so that the feeding sleeve 6 is prevented from being abraded.
Further, the input end of the gear box is located on the rear side of the box body 1, a brake is arranged on the front side of the box body 1 corresponding to the input end, and the brake is a spring brake hydraulic pressure release type brake.
Further, the input of the gearbox comprises an annulus gear 12, a planet carrier 13, a sun gear 14 and planet gears 15; the front end of the inner gear ring 12 is fixed at the rear side of the box body 1; the planet carrier 13 comprises a wheel disc sleeve, a shaft sleeve I and a shaft sleeve II which are arranged on two sides of the wheel disc sleeve, a plurality of through holes are formed in the circumferential surface of the wheel disc sleeve, the wheel disc sleeve is positioned in the inner gear ring 12, and the shaft sleeve I is rotatably connected with the box body 1; the central gear 14 is rotatably arranged in the planet carrier 13, the wheel disc is positioned in the wheel disc sleeve, and the wheel shaft is positioned in the shaft sleeve II and is connected with the input device; a plurality of planet wheels 13 are uniformly meshed on the outer side of the central gear 14, a wheel shaft is rotationally connected with a wheel disc sleeve, and a wheel disc penetrates through the through hole to be meshed with the inner gear ring 12; the brake is connected with the box body 1 through a connecting sleeve 16 and comprises a shell 17, a friction plate fixing frame 18, an end cover frame 19, a friction plate group, a piston 20, a spring seat 21 and a spring I22; the rear end of the connecting sleeve 16 is fixed at the front side of the box body 1, the front end is connected with the rear end of the shell 17, and the connecting sleeve 16 is provided with an oil hole 16.1; the shell 17 is sequentially provided with a piston mounting hole I and a piston mounting hole II from front to back; the friction plate fixing frame 18 is arranged in the connecting sleeve 16 and the box body 1 and comprises a fixing sleeve and a fixing shaft; the front end of the fixed sleeve is opened, the rear end is closed, the circumferential surface is provided with a plurality of open slots, and the front end is connected with the rear end of the shell 17 to form a friction plate mounting cavity; the fixed shaft is arranged at the rear end of the fixed sleeve and is arranged in the shaft sleeve I through an axially arranged key and a key groove, so that the planet carrier 13 and the friction plate fixed frame 18 can axially translate and cannot relatively rotate; the end cover frame 19 includes an end cover closing the front end of the housing 17 and an end cover shaft; the end cover shaft comprises a spline section and a smooth section for connecting the spline section and the end cover shaft, the end cover shaft penetrates through the shell 17 and extends into the fixed sleeve, and the rear end of the end cover shaft is connected with the fixed sleeve; the friction plate group comprises a plurality of dynamic friction plates 23 and static friction plates 24 which are arranged in the friction plate mounting cavity, and the dynamic friction plates 23 and the static friction plates 24 are sleeved on the spline section in a staggered manner; the dynamic friction plate 23 is a circular plate with a clamping plate arranged on the outer edge, the clamping plate is clamped in the open slot, and the dynamic friction plate 23 and the friction plate fixing frame 18 can axially translate and cannot relatively rotate; the static friction sheet 24 is a circular ring-shaped plate with spline grooves at the inner edge, the spline grooves are matched with the spline sections, and the static friction sheet 24 and the end cover frame 19 can axially translate and cannot relatively rotate; the piston 20 is arranged on the smooth section in a sliding penetrating mode and comprises a piston head and a piston column, a spring seat 21 is sleeved outside the piston column, and the piston head and the spring seat 21 are both located in the piston mounting hole I; the springs I22 are arranged between the spring seat 21 and the piston head, two ends of each spring I22 are respectively connected with the spring seat 21 and the piston head, and the springs I22 apply force to the piston 20 to enable the piston column to penetrate through the piston mounting hole II to compress the friction plate set.
The operation process of the driving shaft 2 in the rear clamping assembly of the drilling machine is as follows:
the input device drives the central gear 14 to rotate, the planet gear 15 meshed with the central gear 14 rotates, the inner gear ring 12 is fixed on the box body 1 and meshed with the planet gear 15, the planet gear 15 drives the planet carrier 13 to revolve around the central gear 14, the input gear 30 is fixed on the planet carrier 13, the output gear 31 is fixed on the driving shaft 2, and the required output rotating speed is achieved through the matching of the input gear 30 and the output gear 31.
The working process of the brake in the rear clamping assembly of the drilling machine is as follows:
in a braking state, the spring I22 applies force to the piston 20 to enable the piston column to penetrate through the piston mounting hole II to press the friction plate set, and the friction plate fixing frame 18 and the planet carrier 13 connected with the friction plate fixing frame are prevented from rotating through friction force between the dynamic friction plate 23 and the static friction plate 24; under the state of brake release, hydraulic oil enters the friction plate mounting cavity through the oil hole 16.1, the hydraulic oil applies force to the piston 20 to extrude the spring I22, the piston 20 moves forwards, the pressure between the friction plate sets is reduced, the friction plate sets are separated along the spline sections, the gap between the static friction plates and the dynamic friction plates is enlarged and is filled with the hydraulic oil, the friction force is reduced, under the lubrication of the hydraulic oil, the friction force between the dynamic friction plates and the static friction plates is reduced to be ignored, the planet carrier 13 drives the friction plate fixing frame 18 and the dynamic friction plates 23 connected with the friction plate fixing frame to rotate, and the brake braking force disappears.
Furthermore, a sealing gasket I25 is sleeved on the spline section between the friction plate group and the shell 17, and a spline groove matched with the spline section is formed in the inner edge of the sealing gasket I25; smooth section between sealed I25 of filling up and the piston post is gone up the cover and is equipped with sealed II 26 of filling up, is provided with the sealed mounting hole that fills up that is used for installing sealed II 26 of filling up on the casing 17. The seals i 25 and ii 26 act on the one hand as seals, preventing the hydraulic oil from flowing into the housing 17, and on the other hand as a force-transmitting medium, pushing the friction plate pack or piston 20.
Furthermore, the rear end of the end cover shaft is provided with an ejector pin hole, the flexible ejector pin 27 is connected with the ejector pin hole through a spring II 28, and the rear end of the flexible ejector pin 27 is in contact with the fixed sleeve. In the braking or braking releasing process, the friction plate fixing frame 18 can generate axial deviation under the action of the dynamic friction plate 23, the flexible contact between the friction plate fixing frame 18 and the end cover frame 19 is realized through the flexible ejector pins 27 and the springs II 28, and an axial deviation space of the friction plate fixing frame 18 is provided.
The rear end of the shaft sleeve I is provided with a soft adjusting head 32 connected with the soft adjusting head through a spring, the soft adjusting head 32 is in contact with a wheel disc of the central gear 14, collision and friction between the central gear 14 and the planet carrier 13 are prevented, if the soft adjusting head 32 is abraded, pressure is continuously supplemented through spring elasticity, and the soft adjusting head 32 is enabled to be in contact with the central gear 14 all the time.
Furthermore, the rear end of the inner gear ring 12 is connected with an input device connecting disc 29, and the input device connecting disc 29 is rotatably connected with the shaft sleeve II.
Further, a vent hole 19.1 is provided in the end cap to vent the brake gas when the piston 20 moves.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A rear clamping assembly of a drilling machine comprises a gear box, wherein an input end and an output end are arranged on a box body of the gear box, and a driving shaft is arranged on the output end;
the rear holder comprises a rotating sleeve, a taper sleeve, a feeding sleeve, a slip and an oil cylinder supporting sleeve;
the rear end of the rotating sleeve is fixedly connected with the driving shaft, and more than two strip-shaped holes are formed in the rotating sleeve at equal intervals along the circumferential direction;
the taper sleeve is sleeved outside the rotary sleeve, and the small end face of the taper sleeve is fixedly connected with the front end of the rotary sleeve;
the feeding sleeve is sleeved outside the rotating sleeve in a sliding manner;
the slip is in radial sliding fit with the front end of the feeding sleeve, the slip is positioned in the strip-shaped hole, and the front end of the slip is positioned between the large end surface of the taper sleeve and the rotating sleeve;
the oil cylinder support sleeve is rotatably sleeved outside the feeding sleeve;
two ends of the telescopic oil cylinder are respectively and rotatably connected with the box body and the oil cylinder supporting sleeve to push the oil cylinder supporting sleeve and the feeding sleeve to axially move along the rotating sleeve.
2. The drilling machine rear clamping assembly of claim 1 wherein the front end of the feed sleeve is provided with an annular groove;
the slips include grip block and fixture block, and the fixture block is installed in the ring channel through the connecting pin that radially sets up, and the radial dimension of fixture block is less than the radial dimension of ring channel.
3. The rear clamping assembly of the drilling machine as claimed in claim 2, wherein the clamping block is a right-angled trapezoidal block, the clamping block is arranged on an inclined surface of the clamping block, and an inclined angle of the clamping block is matched with an inclined angle of the taper sleeve.
4. The rear drill chuck assembly of claim 1 wherein the feed sleeve is sleeved with a bearing and a wear ring, the cylinder support sleeve is rotatably connected to the feed sleeve by the bearing, and the cylinder support sleeve is rotatably contacted to the wear ring.
5. The rear clamping assembly for drilling machine according to any one of claims 1 to 4, wherein the input end of the gear box is located at the rear side of the box body, and a brake is provided at the front side of the box body corresponding to the input end, and the brake is a spring brake hydraulic pressure release type brake.
6. The drilling machine rear clamping assembly of claim 5, wherein the input end of the gearbox comprises an annulus gear, a planet carrier, a sun gear and a planet gear;
the front end of the inner gear ring is fixed at the rear side of the box body;
the planet carrier comprises a wheel disc sleeve, a shaft sleeve I and a shaft sleeve II, wherein the shaft sleeve I and the shaft sleeve II are arranged on two sides of the wheel disc sleeve;
the central gear is rotatably arranged in the planet carrier, the wheel disc is positioned in the wheel disc sleeve, and the wheel shaft is positioned in the shaft sleeve II and is connected with the input device;
the plurality of planet wheels are uniformly meshed on the outer side of the central gear, the wheel shaft is rotationally connected with the wheel disc sleeve, and the wheel disc penetrates through the through hole to be meshed with the inner gear ring;
the brake is connected with the box body through a connecting sleeve and comprises a shell, a friction plate fixing frame, an end cover frame, a friction plate group, a piston, a spring seat and a spring I;
the rear end of the connecting sleeve is fixed at the front side of the box body, the front end of the connecting sleeve is connected with the rear end of the shell, and the connecting sleeve is provided with an oil hole;
the shell is sequentially provided with a piston mounting hole I and a piston mounting hole II from front to back;
the friction plate fixing frame is arranged in the connecting sleeve and the box body and comprises a fixing sleeve and a fixing shaft;
the front end of the fixed sleeve is opened, the rear end of the fixed sleeve is closed, a plurality of open slots are formed in the circumferential surface, and the front end of the fixed sleeve is connected with the rear end of the shell to form a friction plate mounting cavity;
the fixed shaft is arranged at the rear end of the fixed sleeve and is arranged in the shaft sleeve I through an axially arranged key and a key groove;
the end cover frame comprises an end cover and an end cover shaft, and the end cover closes the front end of the shell;
the end cover shaft comprises a spline section and a smooth section for connecting the spline section and the end cover shaft, the end cover shaft penetrates through the shell and extends into the fixed sleeve, and the rear end of the end cover shaft is connected with the fixed sleeve;
the friction plate group comprises a plurality of dynamic friction plates and static friction plates which are arranged in the friction plate mounting cavity, and the dynamic friction plates and the static friction plates are sleeved on the spline section in a staggered manner;
the dynamic friction plate is a circular plate with a clamping plate arranged on the outer edge, and the clamping plate is clamped in the open slot;
the static friction plate is a circular ring-shaped plate with spline grooves at the inner edge, and the spline grooves are matched with the spline sections;
the piston is slidably arranged on the smooth section in a penetrating mode and comprises a piston head and a piston column, a spring seat is sleeved outside the piston column, and the piston head and the spring seat are both located in the piston mounting hole I;
a plurality of springs I are arranged between the spring seat and the piston head, two ends of each spring I are connected with the spring seat and the piston head respectively, and the springs I apply force to the piston to enable the piston column to penetrate through the piston mounting hole II to compress the friction plate set.
7. The rear clamping assembly of the drilling machine as claimed in claim 6, wherein a sealing gasket I is sleeved on the spline section between the friction plate group and the shell, and the inner edge of the sealing gasket I is provided with a spline groove matched with the spline section;
the smooth section between sealed I and the piston post of filling up is gone up the cover and is equipped with sealed pad II, is provided with the sealed mounting hole that fills up that is used for the sealed pad II of installation on the casing.
8. The rear clamping assembly of drilling machine as recited in claim 7 wherein the rear end of the end cap shaft is provided with an ejector pin hole, the flexible ejector pin is connected to the ejector pin hole by a spring ii, and the rear end of the flexible ejector pin is in contact with the fixed sleeve.
9. The rear clamping assembly of the drilling machine as recited in claim 5, wherein the rear end of the inner gear ring is connected with an input device connecting disc, and the input device connecting disc is rotatably connected with the shaft sleeve II.
10. The rear drill gripping assembly of claim 5 wherein the end cap is provided with vent holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120214234.1U CN214221120U (en) | 2021-01-26 | 2021-01-26 | Rear clamping assembly of drilling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120214234.1U CN214221120U (en) | 2021-01-26 | 2021-01-26 | Rear clamping assembly of drilling machine |
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| CN214221120U true CN214221120U (en) | 2021-09-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576209A (en) * | 2021-01-26 | 2021-03-30 | 山西金鼎高宝钻探有限责任公司 | Rear clamping assembly of drilling machine |
| CN112576209B (en) * | 2021-01-26 | 2024-06-04 | 山西金鼎高宝钻探有限责任公司 | Rear clamping assembly of drilling machine |
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2021
- 2021-01-26 CN CN202120214234.1U patent/CN214221120U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576209A (en) * | 2021-01-26 | 2021-03-30 | 山西金鼎高宝钻探有限责任公司 | Rear clamping assembly of drilling machine |
| CN112576209B (en) * | 2021-01-26 | 2024-06-04 | 山西金鼎高宝钻探有限责任公司 | Rear clamping assembly of drilling machine |
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