CN107386994B - Screwing machine capable of clamping eccentric pipe fitting - Google Patents
Screwing machine capable of clamping eccentric pipe fitting Download PDFInfo
- Publication number
- CN107386994B CN107386994B CN201710462603.7A CN201710462603A CN107386994B CN 107386994 B CN107386994 B CN 107386994B CN 201710462603 A CN201710462603 A CN 201710462603A CN 107386994 B CN107386994 B CN 107386994B
- Authority
- CN
- China
- Prior art keywords
- holes
- clamping
- shaft
- disc
- eccentric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
- E21B19/163—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe piston-cylinder actuated
Abstract
The invention provides a screwing machine capable of clamping eccentric pipe fittings, which comprises a chassis, a main clamp arranged at one end of the upper surface of the chassis, and further comprises: an eccentric clamping back-up wrench, erect in the chassis upper surface other end, it includes: two frame panels, which are arranged on the other upper surface of the chassis; a clamping unit comprising: the support piece is arranged between the two frame panels; at least 2 oil cylinders are inserted between the two support plates, and the end part of the piston rod is provided with a clamping part; the two variable wheelbase units are arranged on the outer surfaces of the two supporting plates of the supporting piece and comprise: the surface of the driving disc is provided with a first shaft hole and a mounting hole; a transmission disc, the surface of which is provided with a second shaft hole; a driven plate, the surface of which is provided with a third shaft hole and a mounting through hole; the connecting rods are arranged at the outer sides of two ends of the second shaft hole; the shaft rods are inserted into the first connecting channels to the third connecting channels; and the bearings are respectively inserted into the mounting through holes of the frame panel and the driven plate. The screwing machine realizes universal adjustment of the eccentric amount, reduces the production cost, and is convenient to maintain and easy to popularize.
Description
Technical Field
The invention belongs to the technical field of petroleum pipe fitting disassembly and assembly, and particularly relates to a screwing machine capable of clamping eccentric pipe fittings.
Background
The screwing machine, or disassembling and assembling frame, is one kind of screw connecting piece assembling and disassembling machine, and is suitable for use in assembling and disassembling oil field well pump, well tool, oil pumping pipe, pipe sleeve and other screw connecting pieces.
It is well known that short circuits, oil casings and downhole tools in the petroleum field are all connected to each other by threads, and the purpose is to adapt to depths of several kilometers downhole by connecting the tubular bodies by threads.
In the process of realizing threaded connection and adopting equipment connection, the reasonable design of equipment can improve the quality of a well casing body, particularly the large-area development of an offshore oil field, and a plurality of eccentric casing bodies need to be connected.
The traditional concentric pipe body connection screwing machine cannot guarantee that eccentric pipe body connection is achieved, if the eccentric pipe body is unscrewed by the traditional concentric screwing machine, threads can be damaged completely, the pipe bodies cannot be connected, and even if the pipe bodies are connected, safety risks can be brought after the pipe bodies are in the well due to the fact that the threads are damaged.
For eccentric screwing machine, there are mainly the following patent documents in China at present:
chinese patent grant bulletin number: CN204140002U discloses a hydraulic tightening machine which can be used for clamping eccentric pipes, comprising: the adjustable clamping back-up wrench comprises an adjustable clamping back-up wrench panel, a synchronous clamping device, an adjustable clamping device and a clamping cylinder hydraulic adjusting controller. The hydraulic screwing machine can be used for clamping eccentric pipes by designing the lowest clamping device in the adjustable clamping back tongs as the adjustable clamping device so that the adjustable clamping device can move up and down. However, the eccentric clamping is realized by a method of regulating the extending positions of a plurality of oil cylinders step by step through the back tongs, the operation is complex, the eccentric size cannot reach accuracy, threads can be damaged, a pipe body cannot be connected, and even if the pipe body is connected, the safety risk is brought after the pipe body is in a well because the threads are damaged.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a screwing machine capable of clamping an eccentric pipe fitting, which solves the problems that the existing eccentric structure is unreasonable in design and cannot accurately detect the eccentric amount, the forced starting rotation can cause screw thread damage under the condition of incompletely detecting the eccentric amount, the operation work efficiency is low and the product quality is poor, solves the problem of accurately adjusting the eccentric amount, realizes universal adjustment of the eccentric amount, does not damage the screw thread, and has the advantages of improving the work efficiency and the product quality and prolonging the service life, thereby reducing the investment of the production cost of enterprises and enabling the enterprises to always keep the advantage in market competition; meanwhile, the invention has low production cost, convenient maintenance and easy popularization.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides a but spiral-lock machine of centre gripping eccentric pipe fitting, includes the chassis and erects in the main pincers of chassis upper surface one end, spiral-lock machine still includes: the eccentric clamping back-up wrench is arranged at the other end of the upper surface of the chassis and comprises: the two frame panels are vertically erected along the width direction of the chassis and are arranged at the other end of the upper surface of the chassis at intervals along the length direction of the chassis, the upper surfaces of the two frame panels are respectively provided with an opening along the horizontal direction coaxially, and the frame panels positioned at the periphery of the openings are provided with a plurality of connecting ports at intervals; a clamping unit comprising: the support piece is vertically arranged between the two frame panels and comprises two support plates and a plurality of support rods connected between the two support plates at intervals, the middle parts of the two support plates are respectively provided with support holes corresponding to the openings of the frame panels, and the surfaces of the two support plates are respectively provided with a plurality of connecting through holes at intervals along the peripheries of the support holes; at least 2 oil cylinders, one ends of which are respectively inserted between two adjacent support rods through gaps between the two support rods, the outer walls of the oil cylinders are connected with the two support plates in an inscription manner, the piston rods of the oil cylinders extend into the support holes, the end parts of the piston rods are provided with clamping parts for clamping and positioning the eccentric pipe fittings, and the piston rods stretch and retract to drive the clamping parts to clamp the eccentric pipe fittings; the two variable wheelbase units are vertically and symmetrically arranged on the outer surfaces of the two supporting plates of the supporting piece and respectively comprise: the driving disc is annular in shape and is vertically placed, 3 first shaft holes and a plurality of mounting holes corresponding to the supporting plate connecting through holes are axially formed in the surface of the driving disc at intervals, the driving disc is connected with the supporting plate connecting through holes through the mounting holes respectively, and the opening part is coaxially arranged with the supporting plate supporting holes; the driving disc is annular in shape, 3 second shaft holes corresponding to the first shaft holes are formed in the surface of the driving disc at intervals along the axial direction, the driving disc is vertically arranged on the other surface of the driving disc opposite to the supporting plate of the supporting piece, and the axis of the opening part of the driving disc deviates from the axis of the opening part of the driving disc to form eccentric arrangement; the driven disc is annular in shape, 3 third shaft holes corresponding to the first shaft holes and a plurality of mounting through holes corresponding to the frame panel connecting ports are formed in the surface of the driven disc at intervals along the axial direction, the driven disc is vertically arranged on the other surface of the driving disc opposite to the driving disc, the third shaft holes of the driven disc are coaxially arranged with the first shaft holes of the driving disc, and the driven disc opening is coaxially arranged with the driving disc opening and eccentrically arranged with the driving disc opening; the connecting rods are correspondingly arranged at the outer sides of two ends of the second shaft hole of the transmission disc respectively, the two ends of each connecting rod are respectively provided with a connecting hole, the distance between the centers of the first connecting hole and the second connecting hole is L, the connecting rods correspond to the first connecting holes of the second shaft hole and are matched with the second shaft hole to form a second connecting channel, the second connecting holes correspond to the first shaft hole and are matched with the first shaft hole to form a first connecting channel, and the second connecting holes correspond to the third shaft hole and are matched with the third shaft hole to form a third connecting channel; the shaft rods are respectively inserted into the first, second and third connecting channels and are matched with the connecting rods to sequentially connect the driving disc, the transmission disc and the driven disc, the main pliers rotate to drive the torque to the eccentric clamping back pliers to drive the driving disc, the transmission disc and the driven disc to form transmission connection, and the shaft rods are matched with the connecting rods to form aligning within the range of 0-2L; the bearings are respectively inserted into the frame panel connecting ports and the driven disc mounting through holes to drive the driven disc of the variable-wheelbase unit to rotate relatively on the frame panel.
Further, the driving disc mounting holes are connected with the supporting plate connecting through holes through bolts.
In addition, the 3 first shaft holes are equidistantly arranged on the driving disc in a spaced mode; the 3 second shaft holes are equidistantly arranged on the transmission disc; the 3 third shaft holes are equidistantly arranged on the driven plate.
In addition, the connecting rod is 8-shaped, and two openings of the 8-shaped are the first connecting hole and the second connecting hole respectively.
The inner sides of the first, second and third shaft holes are respectively provided with a shaft sleeve; shaft check rings are respectively arranged at two ends of the shaft rod inserted into the second connecting channel; the shaft rods inserted in the first connecting channel and the third connecting channel are respectively connected with the first connecting channel and the third connecting channel through check rings for holes.
And the clamping unit supporting piece is a supporting ring, the middle opening is the supporting hole, the side wall is provided with a plurality of jacks along the circumferential direction and the radial direction at intervals, and the oil cylinder is inserted into the jacks.
And the clamping part arranged at the end part of the piston rod is a clamp tooth or a clamping plate without a tooth surface.
In addition, the lower end of the driven plate extends downwards along the vertical direction to form an extension part for arranging the torque sensor.
And the upper ends and the lower ends of the two frame panels are respectively connected through panel connecting rods, and tension springs for preventing the clamping units from falling down are arranged between the panel connecting rods at the upper ends and the corresponding support piece support rods.
In addition, the upper surface of the chassis is paved with a sliding rail along the length direction of the chassis, and the bottoms of the two frame panels of the eccentric clamping back-up wrench are arranged on the sliding rail in a sliding way through a connecting piece.
The invention has the beneficial effects that:
according to the screwing machine, the two variable wheelbase units are additionally arranged on the back-up clamp clamping unit to form the eccentric clamping back-up clamp, the variable wheelbase units are sequentially arranged through the driving disc, the transmission disc and the driven disc, the driving disc, the transmission disc and the driven disc are connected through the connecting rod and the pin shaft, the first connecting hole and the second connecting hole of the connecting rod are structurally designed to enable the driving disc, the transmission disc and the driven disc to rotate along with rotation of the driving disc, the driven disc are coaxially designed, the transmission disc, the driving disc and the driven disc are eccentrically designed, the distance between the driving shaft and the driven shaft can be changed in operation, and the center of the transmission disc has a constant fixed position in operation, so that automatic eccentricity adjustment is realized;
the driving disc is detachably connected with the supporting plates of the clamping unit to form detachable connection between the variable wheelbase unit and the supporting members, when normal pipe fitting clamping is carried out, the variable wheelbase unit is detached from the two supporting plates of the supporting members of the clamping unit, so that the normal pipe fitting (non-eccentric pipe fitting) can be clamped, when eccentric pipe fitting is required to be clamped, the variable wheelbase unit is arranged on the two supporting plates of the supporting members of the clamping unit to form eccentric clamping back tongs, so that the eccentric pipe fitting can be clamped and knocked out, the clamping device is flexible in use, applicable to clamping and screwing-on and screwing-off of different pipe fitting, wide in application range and low in assembly cost;
the eccentric clamping back tongs can slide on the chassis and adapt to clamping of pipes with different lengths;
the screwing machine solves the problems that the existing eccentric structure is unreasonable in design and cannot accurately eccentric, screw threads are damaged due to forced starting rotation under the condition of incompletely finding the eccentric, the operation working efficiency is low and the product quality is poor, solves the problem of accurately adjusting the eccentric, realizes universal adjustment of the eccentric, does not harm the screw threads, and has the advantages of improving the working efficiency and the product quality and prolonging the service life, thereby reducing the production cost investment of enterprises and enabling the enterprises to always keep the advantage in market competition; meanwhile, the invention has low production cost, convenient maintenance and easy popularization.
Drawings
Fig. 1 is a schematic structural view of a screwing machine capable of clamping eccentric pipes according to the present invention;
fig. 2 is a schematic structural view of a clamping unit in a screwing machine capable of clamping an eccentric pipe fitting according to the present invention;
FIG. 3 is a side view of FIG. 2;
fig. 4 is a schematic structural view of a variable wheelbase unit and a clamping unit in a tightening machine capable of clamping an eccentric pipe fitting according to the present invention;
fig. 5 is a schematic view of the B-B direction structure of fig. 4.
Detailed Description
The present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the invention.
Referring to fig. 1 to 5, the screwing machine capable of clamping an eccentric pipe provided by the invention comprises a chassis 100 and a main clamp 200 erected at one end of the upper surface of the chassis 100, and further comprises: an eccentric clamping back-up wrench 300, which is installed at the other end of the upper surface of the chassis 100, and comprises: the two frame panels 310 are vertically erected along the width direction of the chassis 100 and are arranged at the other end of the upper surface of the chassis 100 at intervals along the length direction of the chassis 100, openings (not shown) are respectively and coaxially arranged on the upper surface of the chassis along the horizontal direction, and a plurality of connecting ports 311 are arranged on the frame panels 310 positioned at the periphery of the openings at intervals; a clamping unit 320, comprising: the support piece 321 is vertically arranged between the two frame panels 310 and comprises two support plates 322 and a plurality of support rods 323 which are connected between the two support plates 322 at intervals, wherein the middle parts of the two support plates 322 are respectively provided with a support hole 324 corresponding to the opening of the frame panel 310, and the surfaces of the two support plates 323 are respectively provided with a plurality of connecting through holes 325 at intervals along the peripheries of the support holes 324; at least 2 oil cylinders 326, one ends of which are respectively inserted between two support plates 323 by a gap between two adjacent support rods 323, the outer walls of the oil cylinders 326 are inscribed in the two support plates 323, piston rods 327 of the oil cylinders 326 extend into the support holes 324, clamping parts 328 for clamping and positioning eccentric pipe fittings are arranged at the ends of the piston rods 327, and the piston rods 327 stretch and drive the clamping parts 328 to clamp the eccentric pipe fittings;
the two wheelbase variable units 330 are vertically and symmetrically disposed on the outer surfaces of the two support plates 322 of the support 321, and respectively include: the driving disc 340 is ring-shaped, vertically placed, and has 3 first shaft holes 341 and a plurality of mounting holes (not shown) corresponding to the connecting through holes 325 of the supporting member 321 along the axial direction at intervals, wherein the two driving discs 340 are respectively connected with the connecting through holes 325 of the supporting plate 322 through the mounting holes (not shown), and the opening is coaxially arranged with the supporting hole 324 of the supporting plate 322; the driving disc 350 is annular, the surface of the driving disc 350 is provided with 3 second shaft holes 351 corresponding to the first shaft holes 341 at intervals along the axial direction, the driving disc 340 is vertically arranged on the other surface of the driving disc 340 opposite to the supporting plate 322 of the supporting member 321, and the axis of the opening part of the driving disc 340 deviates from the axis of the opening part of the driving disc 340 to form eccentric arrangement; the driven plate 360 is annular, the surface of the driven plate 360 is provided with 3 third shaft holes 361 corresponding to the first shaft holes 341 and a plurality of mounting through holes 362 corresponding to the connecting ports 311 of the frame panel 310 at intervals along the axial direction, the driven plate 360 is vertically arranged on the other surface of the driving plate 350 opposite to the driving plate 340, the third shaft holes 361 of the driven plate 360 and the first shaft holes 341 of the driving plate 340 are coaxially arranged, and the opening of the driven plate 360 and the opening of the driving plate 340 are coaxially arranged and eccentrically arranged; the plurality of connecting rods 370 are respectively and correspondingly arranged at the outer sides of two ends of the second shaft hole 351 of the transmission disc 350, connecting holes are respectively formed at two ends of the connecting rods 370, the distance between the centers of the first connecting holes 371 and the second connecting holes 372 is L, the first connecting holes 371 of the connecting rods 370 corresponding to the second shaft hole 351 are matched with the second shaft hole 351 to form a second connecting channel 373, the second connecting holes 372 corresponding to the first shaft hole 341 are matched with the first shaft hole 341 to form a first connecting channel 374, and the second connecting holes 372 corresponding to the third shaft hole 361 are matched with the third shaft hole 361 to form a third connecting channel 375; the plurality of shaft rods 380 are respectively inserted into the first, second and third connecting channels 373-375 and are matched with the connecting rods 370 to sequentially connect the driving disc 340, the transmission disc 350 and the driven disc 360, the main pliers 200 rotate to drive torque to the eccentric clamping back pliers 300 to drive the driving disc 340, the transmission disc 350 and the driven disc 360 to form transmission connection, and the shaft rods 380 are matched with the connecting rods 370 to form aligning within the range of 0-2L; the bearings 390 are respectively inserted into the connecting ports 311 of the frame panel 310 and the mounting through holes 362 of the driven plate 360 to drive the driven plate 360 of the variable wheelbase unit 330 to rotate relatively on the frame panel 310.
Further, the driving plate 340 mounting hole (not shown) is connected to the support plate 321 connecting through hole 325 by a bolt 343.
In addition, the 3 first shaft holes 341 are equidistantly spaced on the driving disk 340; 3 second shaft holes 351 are equidistantly spaced on the driving disk 350; the 3 third shaft holes 361 are equally spaced on the driven plate 360.
The connecting rod 370 has a 8-shape, and two openings of the 8-shape are the first and second connecting holes 371 and 372, respectively.
Further, sleeves (not shown) are provided inside the first, second, and third shaft holes 341, 351, 361, respectively; shaft retainers (not shown) are respectively provided at both ends of the shaft 380 inserted into the second connecting channel 373; the shaft rod 380 inserted into the first and third connection passages 374, 375 is connected to the first and third connection passages 374, 375 through hole retainers (not shown), respectively.
Furthermore, the supporting member 321 of the clamping unit 320 is a supporting ring (not shown), the opening in the middle is the supporting hole 324, the sidewall is provided with a plurality of insertion holes (not shown) along the circumferential direction and the radial direction at intervals, and the oil cylinder 326 is inserted into the insertion holes.
The clamping portion 328 provided at the end of the piston rod 327 is a clamp or a clamping plate without tooth surface.
In addition, the lower end of the driven plate 360 is extended downward in the vertical direction to form an extension 363 for providing a torque sensor.
The upper ends and the lower ends of the two frame panels 310 are respectively connected by a panel connecting rod 312, and a tension spring (not shown) for preventing the clamping unit 320 from falling down is provided between the panel connecting rod 312 at the upper end and the corresponding support 321 and supporting rod 323.
In addition, a sliding rail (not shown) is laid on the upper surface of the chassis 100 along the length direction of the chassis 100, and the bottoms of the two frame panels 310 of the eccentric clamping back-up wrench 300 are slidably disposed on the sliding rail through a connecting piece 313.
Further, in another embodiment of the present invention, the clamping unit 320 is a four-jaw chuck structure with self-locking, which forms an asynchronous clamping of the eccentric head of the eccentric pipe.
Further, in another embodiment of the present invention, the clamping unit 320 cylinder 326 may be used as a set-back bolt. The cylinder 326 is designed into a retaining bolt, and a plurality of bolts are directly used for locking the eccentric head of the pipe fitting, so that the pipe fitting can be synchronously clamped, and the pipe fitting can also be clamped step by step.
In addition, it should be noted that, in the present invention, the clamping portion 328 on the piston rod 327 of the cylinder 326 of the clamping unit 320 may be designed variously, and the purpose is to bite the eccentric head of the pipe and position the pipe, so long as the form of the tooth block for achieving the function is suitable for the protection scope of the present invention.
The number of the oil cylinders is at least 2, and the oil cylinders are distributed at 180-degree intervals along the circumferential direction of the supporting plate 322.
Wherein, referring to fig. 2, in one embodiment of the present invention, the number of the cylinders 326 is 3, and the cylinders are equally spaced along the circumference of the support plate 322.
The invention relates to a screwing machine capable of clamping eccentric pipe fittings, which is used in the following manner:
the main pincers 1, the chassis 2 and the eccentric clamping back pincers 3 form an eccentric clamping screwing machine (dismounting frame), wherein the main pincers 1 which rotate continuously clamp the small-diameter part of the eccentric pipe body, and the eccentric clamping back pincers 3 clamp the large-diameter part of the eccentric pipe body to rotate axially, so that torque is formed, and the large-diameter part of the pipe body is fastened or unfastened on the small-diameter pipe body.
The invention relates to a novel eccentric clamping mechanism of a screwing machine (dismounting frame),
when the eccentric clamping back-up pliers 300 are operated, the pipe fitting eccentric head is placed in the eccentric clamping back-up pliers 300, the clamping unit 320 clamps the pipe fitting eccentric head through the clamping part 328 (preferably pliers teeth) on the piston rod 327 of the oil cylinder 326, three equally-spaced shaft rods 380 are respectively arranged on the equal-diameter circumferences of the driving disk 340, the transmission disk 350 and the driven disk 360, and are respectively connected with each other through three connecting rods 370 with the length L to form an eccentric structure, and when the clamping part 328 clamps an eccentric pipe body, the driving disk 340, the transmission disk 350, the driven disk 360, the corresponding shaft rods 380 and the connecting rods 370 automatically change in position and adjust to adapt to the position change of the eccentric pipe body.
The main pliers 200 rotate to transmit torque to the eccentric clamping back pliers 300, the distance between the horizontal center line clamped by the main pliers 200 and the horizontal center line clamped by the clamping unit 320 is changed by the variable wheelbase unit 330, the distance between the driving shaft piece and the driven shaft piece is changed by the variable wheelbase unit 200, the centering within the range of 0-2L (namely, 0-2 times of the distance between the centers of the first connecting hole 371 and the second connecting hole 372) is realized, and the centering is further realized after the centering is transmitted to the clamping unit 320, so that screwing is realized.
The driving disc 350, the driving disc 340 and the driven disc 360 are of eccentric design, so that the distance between the driving shaft and the driven shaft can be changed during operation, and the center of the driving disc 350 has a constant fixed position during operation, thereby realizing automatic eccentric adjustment.
When the non-eccentric pipe fitting is clamped, the variable wheelbase unit 330 is detached from the support plate 322 of the support 321 of the clamping unit 320.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same. While the invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents substituted for elements thereof without departing from the scope of the invention, which is to be encompassed by the appended claims.
Claims (10)
1. The utility model provides a but spiral-lock machine of centre gripping eccentric pipe fitting, includes the chassis and erects in the main pincers of chassis upper surface one end, its characterized in that, spiral-lock machine still includes:
the eccentric clamping back-up wrench is arranged at the other end of the upper surface of the chassis and comprises:
the two frame panels are vertically erected along the width direction of the chassis and are arranged at the other end of the upper surface of the chassis at intervals along the length direction of the chassis, the upper surfaces of the two frame panels are respectively provided with an opening along the horizontal direction coaxially, and the frame panels positioned at the periphery of the openings are provided with a plurality of connecting ports at intervals;
a clamping unit comprising:
the support piece is vertically arranged between the two frame panels and comprises two support plates and a plurality of support rods connected between the two support plates at intervals, the middle parts of the two support plates are respectively provided with support holes corresponding to the openings of the frame panels, and the surfaces of the two support plates are respectively provided with a plurality of connecting through holes at intervals along the peripheries of the support holes;
at least 2 oil cylinders, one ends of which are respectively inserted between two adjacent support rods through gaps between the two support rods, the outer walls of the oil cylinders are connected with the two support plates in an inscription manner, the piston rods of the oil cylinders extend into the support holes, the end parts of the piston rods are provided with clamping parts for clamping and positioning the eccentric pipe fittings, and the piston rods stretch and retract to drive the clamping parts to clamp the eccentric pipe fittings;
the two variable wheelbase units are vertically and symmetrically arranged on the outer surfaces of the two supporting plates of the supporting piece and respectively comprise:
the driving disc is annular in shape and is vertically placed, 3 first shaft holes and a plurality of mounting holes corresponding to the supporting plate connecting through holes are axially formed in the surface of the driving disc at intervals, the driving disc is connected with the supporting plate connecting through holes through the mounting holes respectively, and the opening part is coaxially arranged with the supporting plate supporting holes;
the driving disc is annular in shape, 3 second shaft holes corresponding to the first shaft holes are formed in the surface of the driving disc at intervals along the axial direction, the driving disc is vertically arranged on the other surface of the driving disc opposite to the supporting plate of the supporting piece, and the axis of the opening part of the driving disc deviates from the axis of the opening part of the driving disc to form eccentric arrangement;
the driven disc is annular in shape, 3 third shaft holes corresponding to the first shaft holes and a plurality of mounting through holes corresponding to the frame panel connecting ports are formed in the surface of the driven disc at intervals along the axial direction, the driven disc is vertically arranged on the other surface of the driving disc opposite to the driving disc, the third shaft holes of the driven disc are coaxially arranged with the first shaft holes of the driving disc, and the driven disc opening is coaxially arranged with the driving disc opening and eccentrically arranged with the driving disc opening;
the connecting rods are correspondingly arranged at the outer sides of two ends of the second shaft hole of the transmission disc respectively, the two ends of each connecting rod are respectively provided with a connecting hole, the distance between the centers of the first connecting hole and the second connecting hole is L, the connecting rods correspond to the first connecting holes of the second shaft hole and are matched with the second shaft hole to form a second connecting channel, the second connecting holes correspond to the first shaft hole and are matched with the first shaft hole to form a first connecting channel, and the second connecting holes correspond to the third shaft hole and are matched with the third shaft hole to form a third connecting channel;
the shaft rods are respectively inserted into the first, second and third connecting channels and are matched with the connecting rods to sequentially connect the driving disc, the transmission disc and the driven disc, the main pliers rotate to drive the torque to the eccentric clamping back pliers to drive the driving disc, the transmission disc and the driven disc to form transmission connection, and the shaft rods are matched with the connecting rods to form aligning within the range of 0-2L;
the bearings are respectively inserted into the frame panel connecting ports and the driven disc mounting through holes to drive the driven disc of the variable-wheelbase unit to rotate relatively on the frame panel.
2. The screwing machine capable of clamping eccentric pipe fittings according to claim 1, wherein the driving disk mounting holes are connected with the supporting plate connecting through holes through bolts.
3. The tightening machine capable of clamping eccentric pipes according to claim 1, wherein the 3 first shaft holes are equidistantly arranged on the driving disc; the 3 second shaft holes are equidistantly arranged on the transmission disc; the 3 third shaft holes are equidistantly arranged on the driven plate.
4. The screwing machine capable of clamping eccentric pipes according to claim 1, wherein the connecting rod is 8-shaped, and two openings of the 8-shaped are the first connecting hole and the second connecting hole respectively.
5. The screwing machine capable of clamping eccentric pipe fittings according to claim 1, wherein shaft sleeves are respectively arranged on the inner sides of the first shaft hole, the second shaft hole and the third shaft hole; shaft check rings are respectively arranged at two ends of the shaft rod inserted into the second connecting channel; the shaft rods inserted in the first connecting channel and the third connecting channel are respectively connected with the first connecting channel and the third connecting channel through check rings for holes.
6. The screwing machine capable of clamping eccentric pipe fittings according to claim 1, wherein the clamping unit supporting piece is a supporting ring, the middle opening is the supporting hole, the side wall is provided with a plurality of jacks along the circumferential direction and the radial direction at intervals, and the oil cylinder is inserted into the jacks.
7. The screwing machine capable of clamping eccentric pipe fittings according to claim 1, wherein the clamping part arranged at the end of the piston rod is a clamp tooth or a clamping plate without tooth surface.
8. The screwing machine capable of clamping eccentric pipe fittings according to claim 1, wherein the lower end of the driven plate extends downwards in the vertical direction to form an extension for setting a torque sensor.
9. The screwing machine capable of clamping eccentric pipe fittings according to claim 1, wherein the upper ends and the lower ends of the two frame panels are respectively connected through panel connecting rods, and tension springs for preventing the clamping units from falling down are arranged between the panel connecting rods at the upper ends and the corresponding support piece support rods.
10. The screwing machine capable of clamping eccentric pipes according to claim 1, wherein the upper surface of the chassis is provided with a sliding rail along the length direction of the chassis, and the bottoms of the two frame panels of the eccentric clamping back-up wrench are slidably arranged on the sliding rail through a connecting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710462603.7A CN107386994B (en) | 2017-06-19 | 2017-06-19 | Screwing machine capable of clamping eccentric pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710462603.7A CN107386994B (en) | 2017-06-19 | 2017-06-19 | Screwing machine capable of clamping eccentric pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107386994A CN107386994A (en) | 2017-11-24 |
| CN107386994B true CN107386994B (en) | 2023-05-26 |
Family
ID=60332336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710462603.7A Active CN107386994B (en) | 2017-06-19 | 2017-06-19 | Screwing machine capable of clamping eccentric pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107386994B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6026796A (en) * | 1983-07-25 | 1985-02-09 | 株式会社大同機械製作所 | Coupling or oil well pipe chucking apparatus in oil well pipe clamp machine |
| CN2790661Y (en) * | 2005-04-13 | 2006-06-28 | 四川省德钢实业集团有限公司 | Fully-hydraulic combined button-tightening machine |
| CN1944944B (en) * | 2005-10-03 | 2011-05-04 | 江苏如石机械有限公司 | Thread screw on and-off machine for sleeve oil pipe |
| CN2898265Y (en) * | 2006-01-06 | 2007-05-09 | 华北石油管理局钻井工艺研究院 | Continuous large-torque vortex fastener |
| CN103527117B (en) * | 2013-10-15 | 2015-09-16 | 江苏申利达机械制造有限公司 | A kind of 360 ° of continuous rotation high pulling torque thread screw on and-off machine |
| CN204140002U (en) * | 2014-11-03 | 2015-02-04 | 江苏申利达机械制造有限公司 | A kind ofly can be used for the hydraulic screw-on machine clamping eccentric pipe fitting |
| CN106837215B (en) * | 2017-03-31 | 2018-12-21 | 江苏申利达机械制造有限公司 | A kind of thread screw on and-off machine very-short-reach clamping device |
-
2017
- 2017-06-19 CN CN201710462603.7A patent/CN107386994B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107386994A (en) | 2017-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3450091B1 (en) | Wheel milling window fixture | |
| CN202079585U (en) | Operating platform with adjustable height for field petroleum operation of coiled tubing | |
| CN101824972B (en) | Mechanism for connecting and disconnecting drill rod and casing | |
| CN101781975A (en) | Screwing and buckling clamp for connecting and disassembling drill rod and sleeve pipe | |
| CN107386994B (en) | Screwing machine capable of clamping eccentric pipe fitting | |
| CN113756732A (en) | Screwing mechanism and coupling centering screwing device | |
| CN201065743Y (en) | Drilling pipe column spinning device | |
| CN104942050A (en) | Pipe orifice adjustment device for building construction pipe | |
| CN201705247U (en) | Spinning wrench used for mounting or dismounting drilling rod and casing | |
| CN205778628U (en) | A kind of novel dismounting drilling rod device | |
| CN204371146U (en) | Dismounting casing spider | |
| CN107386995B (en) | Large-torque floating back tongs for screwing machine | |
| CN210307634U (en) | Chain drive nodular cast iron pipe socket joint connecting device | |
| CN207942135U (en) | A kind of self-centering hydraulic pressure chuck for intersection-line cutting machine | |
| CN201632817U (en) | Clamp cylinder for hydraulic assembling and disassembling stand | |
| CN216157610U (en) | Coupling centering and screwing device | |
| CN101733626A (en) | Hydraulic bearing mounting/dismounting machine | |
| CN206263848U (en) | The erecting device of the rotary oil cylinder of vertical lathe | |
| CN211439119U (en) | Flange positioning and clamping device | |
| CN215942754U (en) | Major diameter ring flange dismantles frock | |
| CN205673647U (en) | A kind of drill jig disassembly mechanism | |
| CN211101959U (en) | Spline shaft milling device | |
| CN219043830U (en) | Vice assembly convenient to disassemble and assemble | |
| CN115199224B (en) | Dismounting platform | |
| CN220561502U (en) | Furnace tube replacement device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |