CN109202844B - Equal-diameter arbitrary-angle cross pipeline marking tool and marking method - Google Patents
Equal-diameter arbitrary-angle cross pipeline marking tool and marking method Download PDFInfo
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- CN109202844B CN109202844B CN201811274775.2A CN201811274775A CN109202844B CN 109202844 B CN109202844 B CN 109202844B CN 201811274775 A CN201811274775 A CN 201811274775A CN 109202844 B CN109202844 B CN 109202844B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H7/00—Marking-out or setting-out work
- B25H7/04—Devices, e.g. scribers, for marking
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Abstract
The invention relates to a marking tool for cross pipelines with equal diameters and any angles and a marking method, comprising a support ring maker, an angle adjusting mechanism, thin steel wires and iron wires, wherein the support ring maker comprises a tool body, a tensioning device and a positioning device, the tensioning device and the positioning device are arranged on the tool body, the tensioning device comprises a rotating shaft and a ratchet wheel sleeved on the rotating shaft, the positioning device comprises a limiting rod and a spring sleeved on the limiting rod, the iron wires wound on the pipelines are wound and pulled by a winding shaft on the rotating shaft of the support ring maker, so that the iron wires are tightened on the wall of the pipeline with a notch to form a support ring with a certain width, at least two support rings with a certain width are made on the pipeline to be notched, then a plurality of thin steel wires are arranged around the support rings to form a simulation tubular object with the diameter close to that of the support rings, and then the support rings are spliced with, and axially moving the thin steel wire to form a splicing shape, and scribing, cutting, polishing and welding according to the splicing shape.
Description
Technical Field
The invention relates to the technical field of pipeline welding intersecting line drawing methods, in particular to a tool and a method for marking cross pipelines with equal diameters and arbitrary angles.
Background
Drawing intersecting lines at the joints of the pipelines according to the connection relationship between the pipelines, removing redundant materials enveloped by the intersecting lines, moving the connected pipelines to the mouths of the intersecting lines, and firmly welding the pipelines. At present, in the field of pipeline construction, no special tool is used for drawing the connection intersection lines between pipelines, and the connection intersection lines between the pipelines are generally drawn by a manual or sample pipe method, so that the defects of trouble exist, meanwhile, the drawn intersection lines have poor precision, and even the connection between the pipelines cannot be ensured in serious conditions, and serious interference is brought to the pipeline construction.
Disclosure of the invention
In order to solve the problems, the invention provides a marking tool and a marking method for crossed pipelines with equal diameters and arbitrary angles.
The specific contents are as follows: equal diameter arbitrary angle cross pipeline marking tool, this marking tool includes support ring producer, thin steel wire, iron wire and angle adjustment mechanism for the equal diameter treats welded pipeline, its characterized in that: the support ring maker comprises a tool body, a tensioning device and a positioning device, wherein the tensioning device and the positioning device are arranged on the tool body; an oblique notch is formed in an opening at one end of the tool body, the long partition plate extends out of the notch, a circular arc-shaped iron wire fixing groove along the thickness direction of the long partition plate is formed in the lower end of the extending portion of the long partition plate, two parallel ear plates extending outwards along the direction of the central line of the tool body are arranged on the end face at the other end of the tool body, an axle hole is correspondingly formed in each of the two ear plates, the axis of the axle hole is parallel to the central line of the iron wire fixing groove, and a space between the two axle holes is used as an iron wire winding; the side wall of the tool body is also provided with two bosses vertical to the side wall, and the two bosses are respectively and correspondingly provided with a positioning hole the axis of which is parallel to the central line of the tool body;
the tension device comprises a rotating shaft and a ratchet wheel sleeved on the rotating shaft, the rotating shaft comprises a transverse winding shaft and a rotating handle, one end of the rotating handle is vertically fixed with one end of the winding shaft, the size of the winding shaft is the same as that of the shaft hole and is connected with the shaft hole, a cutting seam penetrating through the side surface of the winding shaft is formed inwards from the middle part of the end surface of one end of the winding shaft, the length of the cutting seam covers the width of the iron wire winding accommodating groove, and the ratchet wheel is coaxially fixed on one end, which is not provided with the cutting seam, of the winding shaft and is positioned on the outer side of an ear plate;
the positioning device comprises a limiting rod and a spring sleeved on the limiting rod, the limiting rod is arranged in positioning holes of the two bosses, one end of the limiting rod is provided with a chuck, one end part close to the limiting rod is provided with a through hole along the radial direction of the limiting rod, a fixing support is arranged in the through hole, one end of the spring sleeved on the limiting rod is propped against the boss at the far end of the ratchet wheel, the other end of the spring is propped against the fixing support, and the chuck on the limiting rod is clamped in a gear tooth groove of the ratchet wheel under the action of the elastic force of the spring;
the angle adjusting mechanism comprises a self-centering clamp and a scale plate, the self-centering clamp comprises clamping bodies, swing rods and a fixed rod, one end of the fixed rod is correspondingly hinged with the two swing rods, the hinged point of each swing rod and the fixed rod is located at the central point of the swing rod, two ends of the same side of the two swing rods are respectively hinged with one clamping body, the two clamping bodies and the two swing rods form a parallelogram mechanism, and the two clamping bodies are symmetrical about the central line of the fixed rod; the automatic centering device is characterized in that an angle scale of 180 degrees is arranged on the upper surface of the scale plate, two self-centering fixtures A are correspondingly fixed on the upper surface of the scale plate through fixing rods A, the central lines of the fixing rods A on the two self-centering fixtures A are collinear and are parallel to a zero scale line of the angle scale, two self-centering fixtures B are correspondingly fixed through fixing rods B, the central lines of the two fixing rods B are collinear, the free end of a fixing rod B on one self-centering fixture B is hinged to the upper surface of the scale plate, and the hinged point of the fixing rod B and the scale plate is positioned on the center of the zero scale line of the angle scale;
preferably, the fixing support comprises a transverse bolt inserted into the through hole and support legs connected to two ends of the bolt, and the two support legs are supported on the outer side wall of the tool body.
Preferably, the central line of the limiting rod is collinear with the diameter direction of the ratchet wheel, and the center of the ratchet wheel is on the central line of the limiting rod.
Preferably, the size of the wheel tooth groove on the ratchet wheel is matched with the size of the chuck on the limiting rod.
Preferably, two self-centering clamp nails are respectively positioned at two sides of the dial on the scale plate.
Preferably, the upper surface of the fixing rod A is coplanar with the upper surface of the fixing rod B.
A scribing method using the scribing tool for the pipelines with the equal diameter and the arbitrary angles comprises the following specific steps:
taking out a pipeline needing a cut from two pipelines to be welded with equal diameters, and folding a section of iron wire into a U shape;
tightly attaching the U-shaped end of the iron wire to the pipe wall of the pipeline to be cut and pressing the U-shaped end of the iron wire by using fingers, simultaneously winding N circles of the two free ends of the iron wire around the pipe wall, and when winding each circle of the iron wire, enabling the two free ends of the iron wire to pass through the U-shaped end of the iron wire;
after the iron wire is wound, a certain allowance is left for the length of two free ends of the iron wire, the two free ends of the iron wire respectively penetrate through two iron wire channels from one end of the support ring maker where the iron wire fixing groove is located, and simultaneously penetrate through a cutting seam on the winding shaft, and then the U-shaped end of the iron wire is placed and clamped in the iron wire fixing groove;
rotating the rotating handle in the opposite direction of the ratchet wheel teeth to enable the winding shaft to gradually wind the two free ends of the iron wire, wherein the U-shaped end of the iron wire is clamped in the iron wire fixing groove of the support ring maker, and the winding shaft winds the free ends of the iron wire and simultaneously gradually tightens the iron wire wound on the pipeline to be cut, so that the whole iron wire is tightened and attached to the pipe wall of the pipeline to be cut;
fifthly, after the iron wire on the pipeline with the cut is tensioned, the support ring maker is rotated around the end where the iron wire fixing groove is located, two free ends of the iron wire are enabled to pass through the U-shaped end of the iron wire in a back mode and to be tightly pressed on the U-shaped end, the support ring maker is taken down, then the surplus part of the free end of the iron wire is cut off by hand pliers, the head of the iron wire is knocked by the hand pliers to be tightly attached to the U-shaped end of the iron wire, and the iron wire ring wound on the pipeline is the support ring with a certain width.
Preparing at least two support rings on the same pipeline to be notched according to the method, placing the support rings correspondingly, adopting a plurality of same thin steel wires to be tightly arranged in a simulated tubular object with the diameter close to that of the support rings in a surrounding way along the circumferential direction of the support rings, then adopting a tightening belt to tighten the thin steel wires on the support rings to enable the same end section of the thin steel wires to be flush with one end surface of the pipeline to be notched, and then drawing the pipeline to be notched away from the support rings;
the pipeline to be welded is clamped on the self-centering clamp A through a clamping body A on the self-centering clamp A and tightened by a tightening belt, a simulation tubular object which is tightly arranged in a surrounding mode through a plurality of thin steel wires is clamped on the self-centering clamp B through a clamping body B on the self-centering clamp B and tightened by the tightening belt, the axis of the pipeline to be welded is coplanar with the axial direction of the simulation tubular object, the self-centering clamp B is rotated, the flush end of the simulation tubular object is spliced with the pipeline to be welded clamped on the self-centering clamp A according to a specified angle, and the thin steel wires at the splicing end move axially to form a splicing shape in the splicing process;
sleeving the simulation tubular object with the splicing shape on the pipeline to be cut again, and scribing the pipeline to be cut according to the splicing shape of one end of the simulation tubular object by using a marking pen, wherein the line is approximately a intersecting line of two pipelines to be welded with equal diameters when the pipelines are welded according to a specified angle;
ninthly, cutting the pipeline, polishing and welding according to the line drawn in the step (b).
The invention has the advantages of
The invention relates to a marking tool for cross pipelines with equal diameters and any angles and a marking method, comprising a support ring maker, an angle adjusting mechanism, thin steel wires and iron wires, wherein the support ring maker comprises a tool body, a tensioning device and a positioning device, the tensioning device and the positioning device are arranged on the tool body, the tensioning device comprises a rotating shaft and a ratchet wheel sleeved on the rotating shaft, the positioning device comprises a limiting rod and a spring sleeved on the limiting rod, the iron wires wound on the pipelines are wound and pulled by a winding shaft on the rotating shaft of the support ring maker, so that the iron wires are tightened on the wall of the pipeline with a notch to form a support ring with a certain width, at least two support rings with a certain width are made on the pipeline to be notched, then a plurality of thin steel wires are arranged around the support rings to form a simulation tubular object with the diameter close to that of the support rings, and then the support rings are spliced with, and axially moving the thin steel wire to form a splicing shape, and scribing, cutting, polishing and welding according to the splicing shape. This support ring preparation ware is simple and practical, taut effectual, uses the support ring that this support ring preparation ware can make arbitrary diameter pipeline, and the limitation is little that adaptability is good to can carry out arbitrary angle to the pipeline of constant diameter and rule, the support ring preparation can draw materials on the spot simultaneously, convenient for material collection, cost of manufacture are low, have greatly improved the efficiency of pipeline welding construction site pipeline welding looks transversal drawing method.
Drawings
FIG. 1 is a first schematic perspective view of a support ring maker;
FIG. 2 is a schematic perspective view of a second embodiment of a support ring maker;
FIG. 3 is a front view of the side of the support ring maker where the ratchet is located;
FIG. 4 is a schematic perspective view of the tool body;
FIG. 5 is a perspective view of the ratchet wheel mounted on the winding shaft;
FIG. 6 is an enlarged view of A in FIG. 3;
FIG. 7 is a perspective view of a self-centering fixture;
FIG. 8 is a perspective view of the angle adjustment mechanism;
FIG. 9 is a top view of the angle adjustment mechanism;
FIG. 10 is a schematic view showing the manner in which the wire is wound around the pipe and the state in which the support ring maker tightens the wire;
FIG. 11 is a perspective view of a shaped support ring;
FIG. 12 is a schematic perspective view of a support ring wrapped with a thin steel wire;
FIG. 13 is a schematic view of a similar tubular being spliced with a pipe to be welded on an angle adjustment mechanism;
FIG. 14 is a schematic view of a line being scribed on one end of a pipe to be cut according to a splice shape on a similar tubular;
in the figure: 101. the tool comprises a tool body, 102, a long partition plate, 103, an ear plate, 104, a winding shaft, 105, a rotating handle, 106, a ratchet wheel, 107, a limiting rod, 108, a boss, 109, a bolt, 110, a spring, 111, a supporting leg, 112, a kerf, 113, a wire fixing groove, 114, a wire channel, 115, a shaft hole, 116, a positioning hole, 117, a chuck, 118, a pipeline to be cut, 119, a wire wound on the pipeline, 120, a supporting ring maker, 121, a wire to be tightened, 122, a molded supporting ring, 1221, a supporting ring, 1222, a clamping body, 1223, a connecting body, 123, a tightening belt, 124, a thin steel wire, 125, a pipeline to be welded, 126, a intersecting line drawn according to the splicing shape, 127, a cut, 201, a clamping body, 202, a swinging rod, 203, a fixing rod, 204, a scale plate, 205, an angle disc, 206, a zero scale line, 207, a fixing rod A, 208, a clamping body A, 209, a swinging rod A and A, 210. And fixing rods B and 211, swing rods B and 212 and a clamping body B.
Detailed Description
1-14, the marking tool for the pipelines crossed at any angle and with equal diameters comprises a support ring maker, a thin steel wire, an iron wire and an angle adjusting mechanism, and is used for the pipelines to be welded with equal diameters, the support ring maker comprises a tool body, a tensioning device and a positioning device, the tensioning device and the positioning device are installed on the tool body, the tool body is a cuboid shell with openings at two ends, and a long partition plate is arranged in the tool body along the length direction to divide the interior of the tool body into two iron wire channels with the same size; the long partition plate has a certain width, the manufactured support ring is ensured to have a certain width, so that the stability of wrapping the thin steel wire on the support ring is better, an opening at one end of the tool body is provided with an oblique notch, the long partition plate extends out of the notch, the lower end of the extending part of the long partition plate is provided with an arc-shaped iron wire fixing groove along the thickness direction of the long partition plate, the end face at the other end of the tool body is provided with two parallel ear plates which extend outwards along the direction of the central line of the tool body, the two ear plates are respectively and correspondingly provided with an axle hole, the axis of the axle hole is parallel to the central line of the iron wire fixing groove, and; the side wall of the tool body is also provided with two bosses vertical to the side wall, and the two bosses are respectively and correspondingly provided with a positioning hole the axis of which is parallel to the central line of the tool body;
the tensioning device comprises a rotating shaft and a ratchet wheel sleeved on the rotating shaft, the rotating shaft comprises a transverse winding shaft and a rotating handle, one end of the rotating handle is vertically fixed with one end of the winding shaft, the size of the winding shaft is the same as that of the shaft hole and is connected with the shaft hole, the winding shaft can be pulled out of the shaft hole, a cutting seam penetrating through the side surface of the winding shaft is formed in the middle of the end surface of one end of the winding shaft inwards, the length of the cutting seam covers the width of the iron wire winding accommodating groove, the cutting seam is used for inserting an iron wire to facilitate winding and tensioning of the iron wire, and the ratchet wheel is coaxially fixed on one end, which is not provided with the cutting seam, of the winding shaft and is;
the positioning device comprises a limiting rod and a spring sleeved on the limiting rod, the limiting rod is arranged in positioning holes of the two bosses, one end of the limiting rod is provided with a chuck, one end part close to the limiting rod is provided with a through hole along the radial direction of the limiting rod, a fixing support is arranged in the through hole, one end of the spring sleeved on the limiting rod is propped against the boss at the far end of the ratchet wheel, the other end of the spring is propped against the fixing support, and the chuck on the limiting rod is clamped in a gear tooth groove of the ratchet wheel under the action of the elastic force of the spring;
the angle adjusting mechanism comprises a self-centering clamp and a scale plate, the self-centering clamp comprises clamping bodies, swing rods and a fixed rod, one end of the fixed rod is correspondingly hinged with the two swing rods, the hinged point of each swing rod and the fixed rod is located at the central point of the swing rod, two ends of the same side of the two swing rods are respectively hinged with one clamping body, the two clamping bodies and the two swing rods form a parallelogram mechanism, and the two clamping bodies are symmetrical about the central line of the fixed rod; the two clamping bodies swing through the swing rod, the two clamping bodies are always kept symmetrical about a fixed rod center line, an angle scale of 180 degrees is arranged on the upper surface of the scale plate, a corresponding angle is determined according to the dial, the two self-centering clamps A are correspondingly fixed on the upper surface of the scale plate through the fixed rods A, the center lines of the fixed rods A on the two self-centering clamps A are collinear and are parallel to a zero scale line of the angle scale, the two self-centering clamps B are correspondingly fixed through the fixed rods B, the center lines of the two fixed rods B are collinear, the free end of the fixed rod B on one self-centering clamp B is hinged on the upper surface of the scale plate, and the hinged point of the fixed rod B and the scale plate is located at the center of the zero scale line of;
the fixed bolster include horizontal bolt and the landing leg of connection at the bolt both ends of inserting in the through-hole, two landing legs support on the lateral wall of the tool body, prevent that the fixed bolster from dropping from the through-hole.
The central line of the limiting rod is collinear with the diameter direction of the ratchet wheel, and the center of the ratchet wheel is arranged on the central line of the limiting rod.
The size of the wheel tooth socket on the ratchet wheel is matched with the size of the chuck on the limiting rod.
Two from centering anchor clamps first both sides that are located the calibrated scale on the scale plate respectively.
The upper surface of the fixing rod A and the upper surface of the fixing rod B are coplanar, so that the central lines of the pipelines clamped by the self-centering clamp A and the self-centering clamp B are on the same plane.
Example two, referring to figures 1-14,
a marking method of a marking tool for cross pipelines with equal diameters and arbitrary angles, which is applied to the first embodiment, comprises the following specific steps:
taking out a pipeline needing a cut from two pipelines to be welded with equal diameters, and folding a section of iron wire into a U shape;
tightly attaching the U-shaped end of the iron wire to the pipe wall of the pipeline to be cut and pressing the U-shaped end of the iron wire by using fingers, simultaneously winding N circles of the two free ends of the iron wire around the pipe wall, and when winding each circle of the iron wire, enabling the two free ends of the iron wire to pass through the U-shaped end of the iron wire;
after the iron wire is wound, a certain allowance is left for the length of two free ends of the iron wire, the two free ends of the iron wire respectively penetrate through two iron wire channels from one end of the support ring maker where the iron wire fixing groove is located, and simultaneously penetrate through a cutting seam on the winding shaft, and then the U-shaped end of the iron wire is placed and clamped in the iron wire fixing groove;
rotating the rotating handle in the opposite direction of the ratchet wheel teeth to enable the winding shaft to gradually wind the two free ends of the iron wire, wherein the U-shaped end of the iron wire is clamped in the iron wire fixing groove of the support ring maker, and the winding shaft winds the free ends of the iron wire and simultaneously gradually tightens the iron wire wound on the pipeline to be cut, so that the whole iron wire is tightened and attached to the pipe wall of the pipeline to be cut;
after the iron wire on the pipeline with the notch is tensioned, the support ring maker is rotated around the end where the iron wire fixing groove is located, two free ends of the iron wire are enabled to pass through the U-shaped end of the iron wire and to be tightly pressed on the U-shaped end, the support ring maker is taken down, then the excess part of the free end of the iron wire is cut off by using a pliers, a head of the iron wire is knocked by using the pliers to be tightly attached to the U-shaped end of the iron wire, a support ring is made of the iron wire, the support ring comprises support rings with the same and symmetrical number of turns on two sides, the U-shaped end of the iron wire is used as a connector between the support rings on two sides, the free end of each support ring on one side surrounds the connector to form a drop-shaped clamping body, the clamping body is clamped on the connector, and the support rings on two sides are connected by the connector to form the support ring with a certain width in the.
Sixthly, manufacturing at least two support rings on the same pipeline to be notched according to the method, placing the support rings correspondingly, adopting a plurality of same thin steel wires to be tightly arranged in a simulated tubular object with the diameter close to that of the support rings in a surrounding way along the circumferential direction of the support rings, then adopting a tightening belt to tighten the thin steel wires on the support rings and enabling the same end section of the thin steel wires to be flush with one end surface of the pipeline to be notched, and then drawing the pipeline to be notched out of the support rings, wherein the diameter of the thin steel wires is negligible relative to the diameter of the pipeline due to the small size of the thin steel wires;
the pipeline to be welded is clamped on the self-centering clamp A through a clamping body A on the self-centering clamp A and tightened by a tightening belt, a simulation tubular object which is tightly arranged in a surrounding mode through a plurality of thin steel wires is clamped on the self-centering clamp B through a clamping body B on the self-centering clamp B and tightened by the tightening belt, the axis of the pipeline to be welded is coplanar with the axial direction of the simulation tubular object, the self-centering clamp B is rotated, the flush end of the simulation tubular object is spliced with the pipeline to be welded clamped on the self-centering clamp A according to a specified angle, and the thin steel wires at the splicing end move axially to form a splicing shape in the splicing process;
sleeving the simulation tubular object with the splicing shape on the pipeline to be cut again, and scribing the pipeline to be cut according to the splicing shape of one end of the simulation tubular object by using a marking pen, wherein the line is approximately a intersecting line of two pipelines to be welded with equal diameters when the pipelines are welded according to a specified angle;
ninthly, cutting the pipeline, polishing and welding according to the line drawn in the step (b).
Claims (7)
1. Equal diameter arbitrary angle cross pipeline marking tool, this marking tool includes support ring producer, thin steel wire, iron wire and angle adjustment mechanism for the equal diameter treats welded pipeline, its characterized in that: the support ring maker comprises a tool body, a tensioning device and a positioning device, wherein the tensioning device and the positioning device are arranged on the tool body; an oblique notch is formed in an opening at one end of the tool body, the long partition plate extends out of the notch, a circular arc-shaped iron wire fixing groove along the thickness direction of the long partition plate is formed in the lower end of the extending portion of the long partition plate, two parallel ear plates extending outwards along the direction of the central line of the tool body are arranged on the end face at the other end of the tool body, an axle hole is correspondingly formed in each of the two ear plates, the axis of the axle hole is parallel to the central line of the iron wire fixing groove, and a space between the two axle holes is used as an iron wire winding; the side wall of the tool body is also provided with two bosses vertical to the side wall, and the two bosses are respectively and correspondingly provided with a positioning hole the axis of which is parallel to the central line of the tool body;
the tension device comprises a rotating shaft and a ratchet wheel sleeved on the rotating shaft, the rotating shaft comprises a transverse winding shaft and a rotating handle, one end of the rotating handle is vertically fixed with one end of the winding shaft, the size of the winding shaft is the same as that of the shaft hole and is connected with the shaft hole, a cutting seam penetrating through the side surface of the winding shaft is formed inwards from the middle part of the end surface of one end of the winding shaft, the length of the cutting seam covers the width of the iron wire winding accommodating groove, and the ratchet wheel is coaxially fixed on one end, which is not provided with the cutting seam, of the winding shaft and is positioned on the outer side of an ear plate;
the positioning device comprises a limiting rod and a spring sleeved on the limiting rod, the limiting rod is arranged in positioning holes of the two bosses, one end of the limiting rod is provided with a chuck, one end part close to the limiting rod is provided with a through hole along the radial direction of the limiting rod, a fixing support is arranged in the through hole, one end of the spring sleeved on the limiting rod is propped against the boss at the far end of the ratchet wheel, the other end of the spring is propped against the fixing support, and the chuck on the limiting rod is clamped in a gear tooth groove of the ratchet wheel under the action of the elastic force of the spring;
the angle adjusting mechanism comprises a self-centering clamp and a scale plate, the self-centering clamp comprises clamping bodies, swing rods and a fixed rod, one end of the fixed rod is correspondingly hinged with the two swing rods, the hinged point of each swing rod and the fixed rod is located at the central point of the swing rod, two ends of the same side of the two swing rods are respectively hinged with one clamping body, the two clamping bodies and the two swing rods form a parallelogram mechanism, and the two clamping bodies are symmetrical about the central line of the fixed rod; the upper surface of scale plate on be equipped with 180 angle scales, two correspond through dead lever first from centering anchor clamps first and fix on the upper surface of scale plate, two center lines collineations from the dead lever first on centering anchor clamps first and parallel with the zero scale mark of angle scales, two correspond fixedly through dead lever second from centering anchor clamps second, the center line collineation of two dead lever second, one of them articulates on the upper surface of scale plate from the free end of dead lever second on centering anchor clamps second, dead lever second is located the center of the zero scale mark of angle scales with the pin joint of scale plate.
2. The tool of claim 1, wherein: the fixed support comprises a transverse bolt inserted into the through hole and support legs connected to two ends of the bolt, and the two support legs are supported on the outer side wall of the tool body.
3. The tool of claim 1, wherein: the central line of the limiting rod is collinear with the diameter direction of the ratchet wheel, and the center of the ratchet wheel is arranged on the central line of the limiting rod.
4. The tool of claim 1, wherein: the size of the wheel tooth socket on the ratchet wheel is matched with the size of the chuck on the limiting rod.
5. The tool of claim 1, wherein: two from centering anchor clamps first both sides that are located the calibrated scale on the scale plate respectively.
6. The tool of claim 1, wherein: the upper surface of the fixing rod A is coplanar with the upper surface of the fixing rod B.
7. The scribing method by using the scribing tool for the cross pipelines with the equal diameter and any angle as claimed in claim 1 comprises the following specific steps:
taking out a pipeline needing a cut from two pipelines to be welded with equal diameters, and folding a section of iron wire into a U shape;
tightly attaching the U-shaped end of the iron wire to the pipe wall of the pipeline to be cut and pressing the U-shaped end of the iron wire by using fingers, simultaneously winding N circles of the two free ends of the iron wire around the pipe wall, and when winding each circle of the iron wire, enabling the two free ends of the iron wire to pass through the U-shaped end of the iron wire;
after the iron wire is wound, a certain allowance is left for the length of two free ends of the iron wire, the two free ends of the iron wire respectively penetrate through two iron wire channels from one end of the support ring maker where the iron wire fixing groove is located, and simultaneously penetrate through a cutting seam on the winding shaft, and then the U-shaped end of the iron wire is placed and clamped in the iron wire fixing groove;
rotating the rotating handle in the opposite direction of the ratchet wheel teeth to enable the winding shaft to gradually wind the two free ends of the iron wire, wherein the U-shaped end of the iron wire is clamped in the iron wire fixing groove of the support ring maker, and the winding shaft winds the free ends of the iron wire and simultaneously gradually tightens the iron wire wound on the pipeline to be cut, so that the whole iron wire is tightened and attached to the pipe wall of the pipeline to be cut;
fifthly, after the iron wire on the pipeline with the cut is tensioned, rotating the support ring maker around the end where the iron wire fixing groove is located to enable two free ends of the iron wire to pass through the U-shaped end of the iron wire and be tightly pressed on the U-shaped end, taking down the support ring maker, then cutting off redundant parts of the free ends of the iron wire by using a pair of pliers, knocking the head of the iron wire by using the pliers to enable the head of the iron wire to be tightly attached to the U-shaped end of the iron wire, and enabling the iron wire ring wound on the pipeline to be the support ring with a certain width;
preparing at least two support rings on the same pipeline to be notched according to the method, placing the support rings correspondingly, adopting a plurality of same thin steel wires to be tightly arranged in a simulated tubular object with the diameter close to that of the support rings in a surrounding way along the circumferential direction of the support rings, then adopting a tightening belt to tighten the thin steel wires on the support rings to enable the same end section of the thin steel wires to be flush with one end surface of the pipeline to be notched, and then drawing the pipeline to be notched away from the support rings;
the pipeline to be welded is clamped on the self-centering clamp A through a clamping body A on the self-centering clamp A and tightened by a tightening belt, a simulation tubular object which is tightly arranged in a surrounding mode through a plurality of thin steel wires is clamped on the self-centering clamp B through a clamping body B on the self-centering clamp B and tightened by the tightening belt, the axis of the pipeline to be welded is coplanar with the axial direction of the simulation tubular object, the self-centering clamp B is rotated, the flush end of the simulation tubular object is spliced with the pipeline to be welded clamped on the self-centering clamp A according to a specified angle, and the thin steel wires at the splicing end move axially to form a splicing shape in the splicing process;
sleeving the simulation tubular object with the splicing shape on the pipeline to be cut again, and scribing the pipeline to be cut according to the splicing shape of one end of the simulation tubular object by using a marking pen, wherein the line is approximately a intersecting line of two pipelines to be welded with equal diameters when the pipelines are welded according to a specified angle;
ninthly, cutting the pipeline, polishing and welding according to the line drawn in the step (b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811274775.2A CN109202844B (en) | 2018-10-30 | 2018-10-30 | Equal-diameter arbitrary-angle cross pipeline marking tool and marking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811274775.2A CN109202844B (en) | 2018-10-30 | 2018-10-30 | Equal-diameter arbitrary-angle cross pipeline marking tool and marking method |
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| CN110561323A (en) * | 2019-08-30 | 2019-12-13 | 上海宝冶集团有限公司 | binding tool and binding method for iron wires at mouth of hose |
| CN111203684B (en) * | 2020-02-20 | 2023-08-29 | 石河子大学 | Welding clamping device for intersecting pipelines at any angle |
| CN111409382A (en) * | 2020-04-07 | 2020-07-14 | 周子轩 | Can accomodate teaching aid chi of teaching aid stick |
| CN116079680B (en) * | 2023-04-10 | 2023-07-07 | 江苏格莱木业有限公司 | Wood board cutting and scribing device for furniture production |
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| CN109202844A (en) | 2019-01-15 |
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