CN102489742B - Pressure pipeline tapping machine - Google Patents
Pressure pipeline tapping machine Download PDFInfo
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- CN102489742B CN102489742B CN201110400088.2A CN201110400088A CN102489742B CN 102489742 B CN102489742 B CN 102489742B CN 201110400088 A CN201110400088 A CN 201110400088A CN 102489742 B CN102489742 B CN 102489742B
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Abstract
The invention discloses a pressure pipeline tapping machine. The tapping machine mainly comprises a shell, a spindle, a mandrel, a drilling tool, a transmission mechanism and a feed mechanism. The tapping machine has functions of multi-stage rotation speed, multi-stage automatic feed, manual operation, electric operation and the like. The tapping machine has a compact structure, and is convenient, practical, labor-saving, and low in construction cost.
Description
Technical field
The present invention relates to a kind of under pipe pressurized duty, for it is carried out to the tapping machine of tap operation.
Background technology
The patent No. is that the Chinese utility model of ZL01217617.6 has disclosed a kind of electric drill on pipeline under pressure, this tapping machine mainly comprises pipe clamp, gate valve and borehole drill construction, wherein, pipe clamp is fixed on the pipeline for the treatment of perforate as mounting base, gate valve is fixed on pipe clamp, borehole drill construction on being fixed to gate valve in, the drilling tool on it is holed to pipeline through the opening on hole in gate valve and pipe clamp.
Because dividing, the power set of above-mentioned electric drill on pipeline under pressure and its borehole drill construction be arranged, by flexible axle, be connected with the drilling tool in borehole drill construction, not only cause tapping machine complex structure, and cause very big inconvenience to drilling operation, complicated structure causes difficulty to the later maintenance of equipment, is also unfavorable for the steady operation of equipment simultaneously.
Summary of the invention
The problem existing for prior art, the object of the present invention is to provide a kind of simple in structure, both can manual drives, also can motorized motions, but also Pressurized driller for pipeline that can autofeed.
For achieving the above object, Pressurized driller for pipeline of the present invention mainly comprises housing, main shaft, mandrel, drilling tool, transmission mechanism, delivering gear, main shaft bottom is rotatably arranged in housing by bearing, and stretch out from housing on main shaft top, main shaft is hollow shaft, and mandrel is slidably fitted in the centre bore of main shaft, and circumferentially fixing with main shaft, lower housing portion is provided with and supplies and the airtight syndeton being connected in outside, and mandrel lower end passes from the via hole of the syndeton setting of lower housing portion, between via hole hole wall and mandrel, by hermetically-sealed construction, is sealed, and drilling tool is fixed on mandrel lower end, transmission mechanism is arranged between the bottom and housing sidewall of main shaft in housing, and transmission mechanism is outside equipped with power intake at housing, and external impetus rotates through transmission mechanism drive shaft, delivering gear comprises driving wheel, driven pulley, intermediate transmission mechanism, feed nut, driving wheel is sleeved on main shaft upper axis with it and is circumferentially fixing with main shaft, driven pulley is rotatably sleeved on the main shaft axle body of driving wheel top, main shaft top axle body is with external screw thread, feed nut thread is connected to it main shaft upper axis, on driven pulley and between feed nut, be provided with linkage, the driving wheel rotating with main shaft drives driven pulley to rotate around main shaft by required rotating speed through intermediate transmission mechanism, simultaneously, driven pulley orders about feed nut by the linkage on it and together around main shaft, rotates with it, and make thus feed nut along main axle moving, along with drilling tool boring, feed nut moves down along main shaft, and is moved down and made drilling tool autofeed by pushing tow mandrel, for this reason, mandrel upper end or close its upper end are provided with the limited block that extends radially out main shaft, and, on main shaft axle body, be provided with for the axially movable slotted hole of this limited block or elongated slot.
Further, described driving wheel and described driven pulley consist of driving gear and driven gear respectively, described intermediate transmission mechanism consists of carrier gear, on this carrier gear with two gears of mutually coaxially fixing and being respectively used to be meshed with described driving gear and described driven gear.
Further, described linkage is driving lever or shift fork, this driving lever or shift fork lower end and described driven gear fix, extend to extreme direction on described main shaft upper end, on described feed nut, be radially extended with the block that described driving lever or shift fork engage, driving lever or shift fork, when stirring feed nut rotation by this block, allow this block to move up and down along driving lever or shift fork self.
Further, described linkage consists of a stop collar, this stop collar is sleeved on the outside of described main shaft and described feed nut, its lower end and driven gear fix, upper end is rotatably supported on the support ring arranging on the main shaft axle body of feed nut top, on feed nut, be provided with radially the block extending, on stop collar sidewall, be provided with the slotted hole or the elongated slot that for described block, insert, circumferentially match and allow block to move up and down with block.
Further, described housing top is provided with end cap, and on this end cap, with the through hole that passes and stretch out for described main shaft, the described driving gear being sleeved on main shaft is supported on this end cap.
Further, described slotted hole or elongated slot on described limited block and described main shaft circumferentially match, and make thus described mandrel and main shaft circumferentially fixing.
Further, when described main shaft rotates along described drilling tool boring direction, described feed nut rotates round about relative to main shaft, realizes the autofeed of drilling tool.
Further, between the described via hole hole wall of described lower housing portion and described mandrel, by sealing ring or sealing ring, sealed.
Further, the described syndeton of described lower housing portion is ring flange.
Further, be also provided with the bearing for the described mandrel passing is supported in the described via hole of described lower housing portion, described sealing ring or sealing ring are arranged on the axial outside of this bearing.
Further, with it the lower shaft of described main shaft in described housing, be provided with some groups vertically described in transmission mechanism, each transmission mechanism is all with the power intake joining with external driver device.
Further, described drive unit is motor or operating grip.
Further, described transmission mechanism consists of worm and gear, and wherein, worm gear set is contained in lower shaft that described main shaft is positioned at described housing with it and is circumferentially fixing with main shaft, worm screw is supported in housing sidewall, and worm screw stretches out housing sidewall one end with the syndeton of joining with external driver device.
Further, described transmission mechanism consists of bevel-gear sett, one of them bevel gear is sleeved on lower shaft that described main shaft is positioned at described housing with it and is circumferentially fixing with main shaft, another bevel gear is supported in housing sidewall, on this bevel gear, be coaxially fixed with one and stretch out the axostylus axostyle of housing sidewall, this axostylus axostyle outer end is with the syndeton of joining with external driver device.
Further, described carrier gear is arranged on the end cap on described housing top by swing arm, this swing arm swings around the bearing pin parallel with described main shaft, and by approaching that major axes orientation swings or to swinging away from major axes orientation, and make carrier gear be meshed or be separated with described driving gear and described driven gear.
Further, the pin shaft hole of described swing arm is located at the middle part of swing arm, swing arm is provided with for the brake pad rubbing mutually with described driven gear outer circumference surface in the face of one end of described main shaft one side surface, the other end is provided with handle, on this side surface, between handle and pin shaft hole, be also provided with for clamping the draw-in groove of described carrier gear, by control crank to approaching major axes orientation or moving away from major axes orientation, realizing carrier gear is meshed or is separated with described driving gear and described driven gear, and after carrier gear and driving gear and driven gear are separated, can further make described brake pad engage friction with driven gear outer circumference surface and stop its rotation.
Further, on described driven gear, be also provided with the step circle that engages friction for the described brake pad with in described swing arm.
Further, described driving wheel, described driven pulley form by friction pulley, and described intermediate transmission mechanism consists of slip gear.
Further, described driving wheel, driven pulley consist of belt pulley or sprocket wheel, and described intermediate transmission mechanism consists of belt gear or chain-drive mechanism.
Compared with prior art, compact conformation of the present invention, dependable performance, convenient construction.
Accompanying drawing explanation
Fig. 1 is Pressurized driller for pipeline embodiment 1 structural representation of the present invention;
Fig. 2 is A-A cutaway view in Fig. 1, now, carrier gear 16 with driven gear 12, driving gear 10 in the state of being meshed;
Fig. 3 is A-A cutaway view in Fig. 1, and now, carrier gear 16 is with driven gear 12, driving gear 10 in phase-separated state, and brake pad 1502 and driven gear 12 are in the position that can be frictionally engaged;
Fig. 4 is driven gear 12 cutaway views in Fig. 1;
Fig. 5 is swing arm 15 structural representations in Fig. 1;
Fig. 6 is Pressurized driller for pipeline embodiment 2 partial structurtes schematic diagrames of the present invention;
Fig. 7 is Pressurized driller for pipeline embodiment 3 partial structurtes schematic diagrames of the present invention;
Fig. 8 is the cutaway view of main shaft 2 in Fig. 7;
Fig. 9 is bevel gear 4 cutaway views in Fig. 7;
Figure 10 is worm gear 39 cutaway views in Fig. 7.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.
First it should be noted that, in foregoing invention content part and the following examples, when introducing structure of the present invention, used the word of upper end, lower end one class, this class word is just for the convenience of text description, when tapping machine of the present invention is not used towards there being any restriction effect.
embodiment 1
As Fig. 1-Figure 7 shows that the embodiment of the present invention 1, in this embodiment, Pressurized driller for pipeline specifically comprises housing 1, main shaft 2, mandrel 3, bevel gear 4, pinion stand 5, bevel gear 6, end cap 8, driving gear 10, driven gear 12, drilling tool 13, stop collar 14, carrier gear 16, swing arm 15, bearing pin 17, bearing cap 27, sealing ring 28, gland 29, block 32, limited block 34, feed nut 35, support ring 36, baffle plate 37.
Housing 1 is sleeve-like configuration, on it, be provided with one and run through its upper and lower through hole, housing 1 lower end with the perpendicular ring flange of its through-bore axis, this ring flange for be fixed on the pipe clamp 30 for the treatment of on perforate pipeline and be connected, on the composition surface of ring flange, be provided with sealing ring mounting groove, in groove, be provided with sealing ring 23.Through hole on housing 1 is the stepped hole that comprises a large footpath section and a path section, main shaft 2 is rotatably inserted in the large footpath section of the through hole on housing 1 by spaced bearing 19 and bearing 24, and with housing 1 axial restraint, wherein, bearing 19 is pressed solidly in the through hole on housing 1 by end cap 8, and 8 of the end caps upper end by screw and housing 1 fixes.Bevel gear 4 is sleeved on main shaft 2 on the axle body between two bearings 19,24, and circumferentially fixing by flat key 9 and main shaft 2,6 of the bevel gears of matching with bevel gear 4 are arranged in the installing hole arranging on housing 1 sidewall by pinion stand 5, bevel gear 6 carries a back shaft, and be rotatably fitted in pinion stand 5 by this bolster, back shaft stretches out the outer end of pinion stand 5 with the syndeton for being connected with external driver device or operating grip (not shown).
Main shaft 2 is hollow shaft, and its upper end is rear protruding through end cap 8, and on the sidewall of its extension, is provided with and runs through it radially and along its axially extended slotted hole, meanwhile, on the outer surface at position, slotted hole place, be also provided with screw thread.
Mandrel 3 can slide vertically and be fitted in the centre bore of main shaft 2, stretches out, and the drilling tool 13 of known structure is installed on external part under mandrel 3 lower ends are backward through the ring flange of housing 1 lower end.Between the path section of the through hole on mandrel 3 and housing 1, be disposed with from top to bottom gland 29, sealing ring 28, bearing cap 27, bearing 26 and end ring 25, wherein end ring 25 is arranged in the mounting groove arranging on housing 1, between 29, gland and housing 1 through hole, be threaded, and axially limit and housing 1 through hole lower ending opening is sealed by 28 pairs of bearings 26 of crush seal circle.On mandrel 3, near its upper end, be provided with one and stretch out the corresponding radial direction through hole of slotted hole in housing 1 partial sidewall with main shaft 2, the slotted hole and the through-hole mounting on mandrel 3 that radially run through on main shaft 2 have a limited block 34, by this limited block 34, make mandrel 3 and main shaft 2 circumferentially fixing, and can in the slotted hole length range on main shaft 2, move axially simultaneously.Limited block 34 fixes by screw and the mandrel 3 arranging on mandrel 3 upper surfaces.Main shaft 2 upper ends are also fixed with a baffle plate 37 simultaneously, by baffle plate 37 is set, and can be up in the up Shi Dai of feed nut 35 moving mandrel 3.
On axle body between the slotted hole being located thereon at main shaft 2 and end cap 8, be set with successively driving gear 10, driven gear 12, and axially limited by back-up ring 21, driven gear 12 is rotatably contained on main shaft 2, and driving gear 10 is circumferentially fixing by itself and main shaft 2 by flat key 22.Carrier gear 16 has two gears, and these two gears interfix into a dumb-bell shape integral body by intermediate connecting rod.Carrier gear 16 is installed on by its intermediate connecting rod in the buckling groove 1503 of swing arm 15, and swing arm 15 is rotatably arranged on end cap 8 by pin shaft hole 1504 and bearing pin 17.The end, one end that main shaft 2 one side surfaces are faced in swing arm 15 is provided with the brake pad 1502 with driven gear 12 outer circumference surfaces frictions, and other end end is provided with handle 1501, and the draw-in groove 1503 that clamps carrier gear 16 is located between handle 1501 and pin shaft hole 1504.By control crank 1501, approach main shaft 2 or away from main shaft 2, make the carrier gear 16 on it be meshed or be separated with driving gear 10 and driven gear 12, meanwhile, can also allow in swing arm 15 brake pad 1502 engage friction with driven gear 12 outer circumference surfaces stops driven gear 12 to rotate.
Bearing pin 17 is arranged in the screwed hole on end cap 8 by screw thread, or is inserted in the smooth installing hole arranging on end cap 8.
On driven gear 12 step circles, be provided with screw 1201, in the lower end of stop collar 14, borehole jack is contained in that the step circle of driven gear 12 is upper to be fixed by screw, stop collar 14 upper ends are rotatably sleeved on support ring 36, and support ring 36 is sleeved on main shaft 2 end steps circles and by back-up ring axial limiting.On stop collar 14 sidewalls, axially have slotted hole.
Feed nut 35 is threaded on the main shaft 2 of limited block 34 top baffle plate 37 belows, along with rotating feed nut 35, can move up and down along main shaft 2, and when moving down, the limited block 34 that is positioned at its below by pushing together moves down the drilling tool 13 of mandrel 3 and lower end thereof.
On feed nut 35, be provided with the block 32 radially extending, this block 32 is inserted in the slotted hole arranging on stop collar 14, and match like this with slotted hole circumferential size, like this, when stop collar 14 is when main shaft 2 rotates, slotted hole on it can drive feed nut 35 together around main shaft 2, to rotate by pushing tow block 32, and automatically makes thus feed nut 35 move up and down along main shaft 2.
Bevel gear 4 is set, the object of bevel gear 6 is that external impetus is incorporated into and on main shaft 2, drives its rotation, it is for driving force is further incorporated on mandrel 3 that limited block 34 is set between main shaft 2 and mandrel 3, and finally by the drilling operation of mandrel 3 driving drilling tool 13 complete twin conduits, in assurance, reach under the prerequisite of this object, except only arranging shown in Fig. 1 the version of a limited block 34, 1. also a plurality of limited blocks 34 and corresponding a plurality of slotted hole can be set along the length direction of main shaft 2 and mandrel 3, can make like this stressed more balanced when transmitting torque of main shaft 2 and mandrel 3, 2. the many groups of transmission mechanisms that consist of two bevel gears can be set between main shaft 2 and housing 1, many group transmission mechanisms can be taked respectively different gearratios, but also can both be provided with the transmission mechanism that motor drives, arrange not only but also hand-driven transmission mechanism.
The object of the driving mechanism that setting consists of driving gear 10, driven gear 12, stop collar 14, carrier gear 16, feed nut 35 is when 13 pairs of pipelines of drilling tool are holed, realize the autofeed of drilling tool, for this reason, main shaft 2 is when state shown in Fig. 2 clockwise rotates and drive drilling tool 13 to hole, feed nut 35 both relatively main shaft 2 clockwise rotate, also main shaft 2 rotates counterclockwise relatively, so long as move down and pass through limited block 34, mandrel 3 along main shaft 2, promotes drilling tool 13 feeds.It should be noted that, when clockwise rotating, realizes while moving down by the relative main shaft 2 of feed nut 35, the rotating speed that driven gear 12 is described is greater than driving gear 10, now, the screw thread of feed nut 35 should be dextrorotation, and realizes while moving down when the relative main shaft 2 of feed nut 35 rotates counterclockwise, and illustrates that the rotation of driven gear 12 is less than driving gear 10, now, the screw thread of feed nut 35 should be left-handed.
Because stop collar 14 drives by driven gear 12 feed nut 35 work that promote, therefore, can change the downstream rate of feed nut 35 by changing the gearratio from driving gear 10 to driven gear 12, so as to make drilling tool 13 in boring procedure by suitable speed autofeed.
In embodiment shown in Fig. 1, carrier gear 16 is arranged in swing arm 15, and the rotation that utilizes swing arm 15 has and driving gear 10, the driven gear 12 two kinds of duties that are meshed and are separated carrier gear 16, the object arranging is like this: at the state of being meshed, make drilling tool 13 realize autofeed when carrying out drilling operation; In phase-separated state, by rotating backward main shaft 2, the outer circumference surface of brake pad and driven gear 12 steps circles 1202 in swing arm 15 is frictionally engaged, stop driven gear 12 and stop collar 14 together to rotate backward with main shaft 2, and the automatic fast uplink of realizing feed nut 35 resets, but precondition is now: main shaft 2 is when state shown in Fig. 2 clockwise rotates to drive drilling tool 13 to hole, feed nut 35 relatively main shaft 2 rotates counterclockwise to move down, and the screw thread of feed nut 35 can only be left-handed.
Except carrier gear 16 is set in a manner described, also can carrier gear 16 be fixedly installed on end cap 8 by bearing, and make it remain the engagement with driving gear 10 and driven gear 12, like this, after the drilling operation of complete twin conduit, rotate backward main shaft 2 and can make feed nut 35 reset that automatically moves up.
When stating in the use Pressurized driller for pipeline pipeline being carried out to perforate, first, ring flange by housing 1 lower end is fixed on whole tapping machine on the mating interface arranging on pipe clamp 30, then opens the inside valve plate at pipe clamp 30 mating interface places, completes the front preparation of perforate.
Before perforate, remove swing arm 15, carrier gear 16 is snapped fitted on the draw-in groove of swing arm 15; During perforate, when external connection power drive shaft is rotated, swing arm 15, to main shaft 2 direction pushings, is made to carrier gear 16 and driving gear 10 and driven gear 12 positive engagement, realize the transmission of power between driving gear 10 and driven gear 12.It is to be noted, the rotating speed of the driven gear 12 in this embodiment is less than the rotating speed of driving gear 10, the stop collar 14 that makes to be thus fixed on driven gear 12 rotates around main shaft 2 against main shaft 2 rotation directions, in relatively rotating process, block 32 on slotted hole pushing tow feed nut 35 on stop collar 14, force feed nut 35 around main shaft 2 reversions, feed nut 35 rotates on main shaft 2 and axially movable limited block 34, mandrel 3 and the drilling tool 13 of simultaneously pushing moves down, and realizes the autofeed of drilling tool 13.
After perforate completes, remove swing arm 15, the carrier gear 16 in swing arm 15 is removed with swing arm 15 and separated with driving gear 10 with driven gear 12, now, driven gear 12 and the synchronized rotation of driving gear 10, mandrel 3 is neither descending, also not up.As can be seen here, in perforate process, as long as whether the one end that clamps carrier gear 16 in control swing arm 15, to main shaft 2 pressuring directions, just can be controlled the autofeed of drilling tool 13 and stop feed.
If want drilling tool 13 rapid returns, rotate backward main shaft 2, further swing arm 15 is laterally rotated, make the brake pad 1502 on swing arm 15 other ends engage friction with driven tooth outer circumference surface 1202, stop driven gear 12 to rotate with main shaft, stop collar 14 slotted hole sidewalls also stop feed nut 35 to rotate with main shaft by block 32, and now the relative main shaft 2 of feed nut 35 rotates backward and moves up fast, realize fast uplink and reset.
In the delivering gear of above-described embodiment, the object that driving gear 10, carrier gear 16, driven gear 12 are set is that main shaft 2 rotational powers are passed to stop collar 14, order about it by required rotational speed, for this purpose, the transmission mechanism wherein consisting of driving gear 10, carrier gear 16, driven gear 12 also can be replaced by other suitable transmission mechanisms, as chain-drive mechanism, or belt gear, or slip gear, etc.
Driven gear 12 orders about feed nut 35 by the stop collar 14 fixing with it and together rotates with it, in order to drive feed nut 35 to rotate, the driving lever or the shift fork that to extreme direction on main shaft 2, extend also can be set on driven gear 12 and replace stop collar 14, and as long as the structure of driving lever or shift fork can make feed nut 35 together rotate with it, and can when rotating, along main shaft 2, axially move up and down.
embodiment 2
As shown in Figure 6, in Pressurized driller for pipeline embodiment 2 of the present invention, first, second two groups of transmission mechanisms are set between main shaft 2 and housing 1, wherein first group of transmission mechanism consists of a bevel gear 4 and a bevel gear 6, second group of transmission mechanism consists of a bevel gear 4 and two bevel gears 6, two bevel gears 6 are along bevel gear 4 arranged in radial symmetry, and the outer end of bevel gear 6 is with the syndeton matching with operating grip 44.
During use, both external driver device and first group of transmission mechanism can have been fetched mutually to drive shaft 2 work, two operating grips 44 that also can hand control be connected with second group of transmission mechanism come drive shaft 2 to work.
embodiment 3
In the embodiment 3 shown in Fig. 7-Figure 10, as shown in FIG., main shaft 2 step circles 201 are provided with spline, with rotatable suit bevel gear 4 and worm gear 39 on the neighbouring shaft part of step circle 201, the step circle 401,3901 that bevel gear 4 is identical with step circle 201 external diameters in the face of step circle 201 one end are respectively equipped with worm gear 39, is provided with the identical spline of step circle 201 upper spline groove equally on step circle 401,3901; Spline housing 38 is fitted on step circle 201 splines and also can be moved up and down with main shaft 2 is circumferentially fixing by inner Kong Huajian, keyway socket is circumferentially fixing by bevel gear 4 and main shaft while moving on spline housing 38 and on bevel gear 4 steps circles 401, when spline housing 38 moves down with worm gear 39 steps circles 3901 on keyway socket worm gear 39 and main shaft are circumferentially fixed; Stirring ring 41 is rotatably sleeved on spline housing 38 and with spline housing 38 and axially limits, stir ring 41 and be provided with the driving lever 42 that extends radially out housing 1 sidewall through hole outside, stir driving lever 42 and can make spline housing 38 move up and down, realize and switching between worm gear 39 and bevel gear 4 to main shaft transferring power approach.As shown in Figure 9, worm gear 39 matches and forms one group of transmission mechanism with the worm screw 40 arranging on housing 1, the bevel gear 6 arranging on 4 of bevel gears and the housing 1 one group of transmission mechanism of formation that matches.The outer end that worm screw 40 stretches out housing 1 is connected with external driver device, and the outer end of bevel gear 6 is connected with operating grip 44.
During use, at state shown in Fig. 7, move gear 4 and main shaft 2 are circumferentially fixed on spline housing 38, now hand control operating grip 44 gets final product drive shaft 2 rotation works; Spline housing 38 cones move down worm gear 39 and main shaft 2 circumferentially fixing, and bevel gear 4 and main shaft 2 are separated, and external driver device is by worm screw 40 drive shaft 2 rotation works.
The various embodiments described above are just for illustrating the present invention, and in addition, those skilled in the art also can make various embodiment after comprehension inventive concept, and these embodiments all should be within protection scope of the present invention.
Claims (18)
1. a Pressurized driller for pipeline, is characterized in that, this tapping machine comprises housing, main shaft, mandrel, drilling tool, transmission mechanism, delivering gear, main shaft bottom is rotatably arranged in housing by bearing, and stretch out from housing on main shaft top, main shaft is hollow shaft, and mandrel is slidably fitted in the centre bore of main shaft, and circumferentially fixing with main shaft, lower housing portion is provided with and supplies and the airtight syndeton being connected in outside, and mandrel lower end passes from the via hole of the syndeton setting of lower housing portion, between via hole hole wall and mandrel, by hermetically-sealed construction, is sealed, and drilling tool is fixed on mandrel lower end, transmission mechanism is arranged between the bottom and housing sidewall of main shaft in housing, and transmission mechanism is outside equipped with power intake at housing, and external impetus rotates through transmission mechanism drive shaft, delivering gear comprises driving wheel, driven pulley, intermediate transmission mechanism, feed nut, driving wheel is sleeved on main shaft upper axis with it and is circumferentially fixing with main shaft, driven pulley is rotatably sleeved on the main shaft axle body of driving wheel top, main shaft top axle body is with external screw thread, feed nut thread is connected to it main shaft upper axis, on driven pulley and between feed nut, be provided with linkage, the driving wheel rotating with main shaft drives driven pulley to rotate around main shaft by required rotating speed through intermediate transmission mechanism, simultaneously, driven pulley orders about feed nut by the linkage on it and together around main shaft, rotates with it, and make thus feed nut along main axle moving, along with drilling tool boring, feed nut moves down along main shaft, and is moved down and made drilling tool autofeed by pushing tow mandrel, for this reason, mandrel upper end or close its upper end are provided with the limited block that extends radially out main shaft, and, on main shaft axle body, be provided with for the axially movable slotted hole of this limited block or elongated slot.
2. tapping machine as claimed in claim 1, it is characterized in that, described driving wheel and described driven pulley consist of driving gear and driven gear respectively, described intermediate transmission mechanism consists of carrier gear, on this carrier gear with two gears of mutually coaxially fixing and being respectively used to be meshed with described driving gear and described driven gear.
3. tapping machine as claimed in claim 2, it is characterized in that, described linkage is driving lever or shift fork, this driving lever or shift fork lower end and described driven gear fix, extend to extreme direction on described main shaft upper end, on described feed nut, be radially extended with the block engaging with described driving lever or shift fork, driving lever or shift fork, when stirring feed nut rotation by this block, allow this block to move up and down along driving lever or shift fork self.
4. tapping machine as claimed in claim 2, it is characterized in that, described linkage consists of a stop collar, this stop collar is sleeved on the outside of described main shaft and described feed nut, its lower end and driven gear fix, upper end is rotatably supported on the support ring arranging on the main shaft axle body of feed nut top, is provided with the block radially extending on feed nut, is provided with the slotted hole or the elongated slot that for described block, insert, circumferentially match and allow block to move up and down with block on stop collar sidewall.
5. tapping machine as claimed in claim 4, is characterized in that, described housing top is provided with end cap, and on this end cap, with the through hole that passes and stretch out for described main shaft, the described driving gear being sleeved on main shaft is supported on this end cap.
6. tapping machine as claimed in claim 4, is characterized in that, described slotted hole or elongated slot on described limited block and described main shaft circumferentially match, and makes thus described mandrel and main shaft circumferentially fixing.
7. tapping machine as claimed in claim 4, is characterized in that, when described main shaft rotates along described drilling tool boring direction, described feed nut rotates round about relative to main shaft, realizes the autofeed of drilling tool.
8. tapping machine as claimed in claim 4, is characterized in that, between the described via hole hole wall of described lower housing portion and described mandrel, by sealing ring or sealing ring, is sealed.
9. tapping machine as claimed in claim 4, is characterized in that, the described syndeton of described lower housing portion is ring flange.
10. tapping machine as claimed in claim 4, is characterized in that, in the described via hole of described lower housing portion, is also provided with the bearing for the mandrel passing is supported, and sealing ring or sealing ring are arranged on the axial outside of this bearing.
11. tapping machines as claimed in claim 4, is characterized in that, with it the lower shaft of described main shaft in described housing, be provided with some groups vertically described in transmission mechanism, each transmission mechanism is all with the power intake joining with external driver device.
12. tapping machines as claimed in claim 4, it is characterized in that, described transmission mechanism consists of worm and gear, wherein, worm gear set is contained in lower shaft that described main shaft is positioned at described housing with it and is circumferentially fixing with main shaft, worm screw is supported in housing sidewall, and worm screw stretches out housing sidewall one end with the syndeton of joining with external driver device.
13. tapping machines as claimed in claim 4, it is characterized in that, described transmission mechanism consists of bevel-gear sett, one of them bevel gear is sleeved on lower shaft that described main shaft is positioned at described housing with it and is circumferentially fixing with main shaft, another bevel gear is supported in housing sidewall, on this bevel gear, be coaxially fixed with one and stretch out the axostylus axostyle of housing sidewall, this axostylus axostyle outer end is with the syndeton of joining with external driver device.
14. tapping machines as claimed in claim 4, it is characterized in that, described carrier gear is arranged on the end cap on described housing top by swing arm, this swing arm swings around the bearing pin parallel with described main shaft, and by approaching that major axes orientation swings or to swinging away from major axes orientation, and make carrier gear be meshed or be separated with described driving gear and described driven gear.
15. tapping machines as claimed in claim 14, it is characterized in that, the pin shaft hole of described swing arm is located at the middle part of swing arm, swing arm is provided with for the brake pad rubbing mutually with described driven gear outer circumference surface in the face of one end of described main shaft one side surface, the other end is provided with handle, on this side surface, between handle and pin shaft hole, be also provided with for clamping the draw-in groove of described carrier gear, by control crank to approaching major axes orientation or moving away from major axes orientation, realizing carrier gear is meshed or is separated with described driving gear and described driven gear, and after carrier gear and driving gear and driven gear are separated, can further make described brake pad engage friction with driven gear outer circumference surface and stop its rotation.
16. tapping machines as claimed in claim 15, is characterized in that, are also provided with the step circle that engages friction for the described brake pad with in described swing arm on described driven gear.
17. tapping machines as claimed in claim 1, is characterized in that, described driving wheel, described driven pulley form by friction pulley, and described intermediate transmission mechanism consists of slip gear.
18. tapping machines as claimed in claim 1, is characterized in that, described driving wheel, driven pulley consist of belt pulley or sprocket wheel, and described intermediate transmission mechanism consists of belt gear or chain-drive mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110400088.2A CN102489742B (en) | 2011-12-06 | 2011-12-06 | Pressure pipeline tapping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110400088.2A CN102489742B (en) | 2011-12-06 | 2011-12-06 | Pressure pipeline tapping machine |
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| CN102489742A CN102489742A (en) | 2012-06-13 |
| CN102489742B true CN102489742B (en) | 2014-09-10 |
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|---|---|---|---|---|
| CN105798354B (en) * | 2016-04-27 | 2018-03-16 | 北京市燃气集团有限责任公司 | A kind of on-line production gas pipeline plugging holes system |
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| CN102489742A (en) | 2012-06-13 |
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