阅读说明：本技术 压力钢管切割装置 (Pressure steel pipe cutting device ) 是由 叶明� 任长春 何金星 吴广秀 程龑玺 时志华 阿得荣 李锰 陈博 沙旭东 杨凯 于 2021-07-26 设计创作，主要内容包括：本发明公开了一种压力钢管切割装置,包括：支座,其顶部设有升降平台,升降平台顶部设有轴对称的沟槽,位于沟槽两侧相对设有侧板,位于两个侧板上对称设有牵拉机构,侧板和牵拉机构均相对沟槽的对称轴对称设置；定位机构,其包括可拆卸连接于支座上的圆环轨道、沿圆环轨道滑动连接的小车、固定于小车上的夹持机构,其中,圆环轨道的中心轴与所述沟槽的对称轴位于同一竖直面上,圆环轨道至少包括两节弧形轨道可拆卸拼接形成,圆环轨道内侧壁上设有多个激光测距机构,用于检测圆环轨道内侧壁至穿过圆环轨道上待切割钢管的距离；切割机构,其可拆卸固定于夹持机构上。本发明具有使钢管与圆环轨道的中心轴重合,实施沿圆环轨道精准切割的有益效果。(The invention discloses a pressure steel pipe cutting device, comprising: the top of the support is provided with a lifting platform, the top of the lifting platform is provided with an axisymmetric groove, two sides of the groove are oppositely provided with side plates, the two side plates are symmetrically provided with traction mechanisms, and the side plates and the traction mechanisms are symmetrically arranged relative to the symmetry axis of the groove; the positioning mechanism comprises a circular ring track detachably connected to the support, a trolley connected with the circular ring track in a sliding mode along the circular ring track, and a clamping mechanism fixed on the trolley, wherein the central shaft of the circular ring track and the symmetrical shaft of the groove are located on the same vertical plane, the circular ring track at least comprises two sections of arc-shaped tracks which are detachably spliced, and a plurality of laser ranging mechanisms are arranged on the inner side wall of the circular ring track and used for detecting the distance from the inner side wall of the circular ring track to a steel pipe to be cut penetrating through the circular ring track; and the cutting mechanism is detachably fixed on the clamping mechanism. The circular ring track cutting device has the beneficial effects that the central axes of the steel pipe and the circular ring track are overlapped, and accurate cutting along the circular ring track is implemented.)

1. Pressure steel pipe cutting device, its characterized in that includes:

the top of the support is provided with a lifting platform, the top of the lifting platform is provided with an axisymmetric groove, two sides of the groove are oppositely provided with side plates, the two side plates are symmetrically provided with traction mechanisms, and the side plates and the traction mechanisms are symmetrically arranged relative to the symmetry axis of the groove;

the positioning mechanism comprises a circular ring track detachably connected to the support, a trolley slidably connected along the circular ring track, and a clamping mechanism fixed on the trolley, wherein a central shaft of the circular ring track and a central shaft of the groove are positioned on the same vertical surface, the circular ring track at least comprises two sections of arc-shaped tracks which are detachably spliced, and a plurality of laser ranging mechanisms are arranged on the inner side wall of the circular ring track and used for detecting the distance from the inner side wall of the circular ring track to a steel pipe to be cut penetrating through the circular ring track;

and the cutting mechanism is detachably fixed on the clamping mechanism.

2. The apparatus of claim 1, further comprising a pair of auxiliary positioning mechanisms respectively located on both sides of the support and the positioning mechanism, the auxiliary positioning mechanisms comprising:

the bottom of the support column is provided with a universal wheel;

the supporting plate is fixed on the supporting column;

the tray is arc-shaped and fixed on the supporting plate and used for receiving the steel pipe to be cut.

3. The steel penstock cutting device of claim 1, wherein the lifting platform comprises an electric cylinder arranged on the support and a top plate driven by the electric cylinder to lift, and the top plate is provided with the groove.

4. The penstock cutting device of claim 3, wherein the section of the groove perpendicular to the axis of symmetry is circular arc-shaped.

5. The penstock cutting device of claim 1, wherein the pulling mechanism comprises:

the winch is fixed on the side plate;

the side locking belt comprises a plurality of rigid cambered plates arranged at intervals and a pair of steel wire ropes for connecting two adjacent cambered plates, one ends of the two steel wire ropes positioned at the uppermost ends are symmetrically fixed on the same joint rope, the joint rope is fixed on the winch, and one ends of the two steel wire ropes positioned at the lowermost ends are fixed outside the grooves.

6. The penstock cutting device of claim 5, wherein the cutting mechanism is a torch cutter.

7. The penstock cutting device of claim 1, wherein the circular track is fixed to the support by a plurality of flanges.

8. The penstock cutting device of claim 1, wherein the circular track is formed by splicing two semicircular arc tracks, wherein the two connecting end surfaces of one arc track are respectively provided with triangular inserting columns, and the two connecting end surfaces of the other arc track are respectively provided with inserting holes corresponding to the inserting columns one by one.

9. The penstock cutting device of claim 8, wherein the back sides of the splices of the arcuate rails are provided with lugs opposite to each other, and the two lugs opposite to each other are connected by flanges.

10. The penstock cutting device of claim 1, wherein the number of the laser ranging mechanisms is 2, and the laser ranging mechanisms are symmetrically arranged on the circular track from top to bottom.

Technical Field

The invention relates to the technical field of steel pipe cutting. More particularly, the present invention relates to a penstock cutting device.

Background

In engineering construction, a pressure steel pipe is usually used, the diameter of the pressure steel pipe is several meters or dozens of meters under some working conditions, and when the pressure steel pipe with the large diameter is cut, it is difficult to ensure that the cutting surface is perpendicular to the axial lead of the steel pipe. Furthermore, it is difficult to draw a circle at a desired position in the middle of a large-diameter steel pipe of ten meters or even twenty meters, which results in an excessively large error in the shape of the end face along the penstock, and a very wide seam is formed when the steel pipe is connected with an adjacent steel pipe or other members, which brings more workload for the later welding and detection work, reduces the work efficiency of the whole project, and is easy to cause welding defects, thereby bringing more quality hazards to the project.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.

It is still another object of the present invention to provide a cutting apparatus for penstock.

To achieve these objects and other advantages in accordance with the present invention, there is provided a penstock cutting apparatus comprising:

the top of the support is provided with a lifting platform, the top of the lifting platform is provided with an axisymmetric groove, two sides of the groove are oppositely provided with side plates, the two side plates are symmetrically provided with traction mechanisms, and the side plates and the traction mechanisms are symmetrically arranged relative to the symmetry axis of the groove;

the positioning mechanism comprises a circular ring track detachably connected to the support, a trolley slidably connected along the circular ring track, and a clamping mechanism fixed on the trolley, wherein a central shaft of the circular ring track and a central shaft of the groove are positioned on the same vertical surface, the circular ring track at least comprises two sections of arc-shaped tracks which are detachably spliced, and a plurality of laser ranging mechanisms are arranged on the inner side wall of the circular ring track and used for detecting the distance from the inner side wall of the circular ring track to a steel pipe to be cut penetrating through the circular ring track;

and the cutting mechanism is detachably fixed on the clamping mechanism.

Preferably, the positioning device further comprises a pair of auxiliary positioning mechanisms, the pair of auxiliary positioning mechanisms are respectively located at two sides of the support and the positioning mechanism, and the auxiliary positioning mechanisms comprise:

the bottom of the support column is provided with a universal wheel;

the supporting plate is fixed on the supporting column;

the tray is arc-shaped and fixed on the supporting plate and used for receiving the steel pipe to be cut.

Preferably, the lifting platform comprises an electric cylinder arranged on the support and a top plate driven by the electric cylinder to lift, and the top plate is provided with the groove.

Preferably, the cross section of the groove perpendicular to the symmetry axis is circular arc-shaped.

Preferably, the pulling mechanism includes:

the winch is fixed on the side plate;

the side locking belt comprises a plurality of rigid cambered plates arranged at intervals and a pair of steel wire ropes for connecting two adjacent cambered plates, one ends of the two steel wire ropes positioned at the uppermost ends are symmetrically fixed on the same joint rope, the joint rope is fixed on the winch, and one ends of the two steel wire ropes positioned at the lowermost ends are fixed outside the grooves.

Preferably, the cutting mechanism is a torch cutter.

Preferably, the circular ring track is fixed to the support by a plurality of flanges.

Preferably, the circular track is formed by splicing two semicircular arc-shaped tracks, wherein two connecting end surfaces of one arc-shaped track are respectively provided with a triangular-distribution plugging column, and two connecting end surfaces of the other arc-shaped track are respectively provided with a plugging hole in one-to-one correspondence with the plugging columns.

Preferably, the back of the splicing part of the arc-shaped tracks is provided with lugs oppositely, and the two opposite lugs are connected through flanges.

Preferably, the number of the laser ranging mechanisms is 2, and the laser ranging mechanisms are arranged on the circular ring track in an up-down symmetrical mode.

The invention at least comprises the following beneficial effects:

first, can make the center pin of steel pipe and the center pin of slot be located same vertical face earlier, be located same vertical face with the orbital center pin of ring promptly, then the adjustment steel pipe height under laser rangefinder's assistance, can make steel pipe center pin and the coincidence of ring track center pin to ensure that each cutting loop line is just circular, make the cutting accurate, reduced the remedy engineering in later stage.

Secondly, because the diameter of the steel pipe is large, the weight is not small, when the traction mechanism is used for adjusting the steel pipe, the auxiliary positioning mechanism can be used, so that the two sides of the steel pipe are placed on the tray, but the steel pipe does not leave the groove, the pressure of the steel pipe on the groove is only reduced, then the traction mechanism is started for traction and fixation, the position of the central axis of the steel pipe can be easily adjusted, and the central axis of the steel pipe and the central axis of the groove are located on the same vertical plane.

And thirdly, each section of arc-shaped track is arranged after the steel pipe is placed in the groove, so that the circular track can surround the steel pipe from the outer side, and the steel pipe does not need to penetrate through the circular track when the steel pipe is lifted and placed in the groove. Because the diameter of the steel pipe is large, the steel pipe passes through the circular ring track with high operation difficulty, collision is easy to cause, and the construction quality is influenced.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic front structural view of the cutting device according to one embodiment of the present invention;

fig. 2 is a schematic side view of the cutting device according to one embodiment of the present invention;

fig. 3 is a detail view of the side locking band of one embodiment of the present invention;

fig. 4 is a schematic back structure diagram of the circular ring track according to one embodiment of the present invention;

fig. 5 is a detailed view of the insertion hole according to one embodiment of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 5, the present invention provides a pressure steel pipe cutting apparatus, including:

the top of the support 1 is provided with a lifting platform 2, the top of the lifting platform 2 is provided with an axisymmetric groove 21, two sides of the groove 21 are oppositely provided with side plates 22, two side plates 22 are symmetrically provided with traction mechanisms 7, and the side plates 22 and the traction mechanisms 7 are symmetrically arranged relative to the symmetry axis of the groove 21;

the positioning mechanism comprises a circular ring track detachably connected to the support 1, a trolley slidably connected along the circular ring track, and a clamping mechanism fixed on the trolley, wherein a central shaft of the circular ring track and a symmetry axis of the groove 21 are positioned on the same vertical plane, the circular ring track at least comprises two sections of arc-shaped tracks which are detachably spliced, and a plurality of laser ranging mechanisms 4 are arranged on the inner side wall of the circular ring track and used for detecting the distance from the inner side wall of the circular ring track to a steel pipe 8 to be cut penetrating through the circular ring track;

and the cutting mechanism 5 is detachably fixed on the clamping mechanism.

In the above technical solution, when the steel pipe 8 is to be cut, the steel pipe 8 is lifted and placed in the groove 21, so that the steel pipe 8 traverses the groove 21, then the arc-shaped rails are mounted on the support 1, and the arc-shaped rails are mounted after the steel pipe 8 is placed in the groove 21, so that the circular rail surrounds the steel pipe 8 from the outside, and the steel pipe 8 does not need to pass through the circular rail in the process of lifting the steel pipe 8 and placing the steel pipe in the groove 21. Because 8 diameters of steel pipe are great, make 8 steel pipe pass the orbital operation degree of difficulty of ring big, cause the collision easily, influence construction quality. Then the steel pipe 8 is wrapped by the drawing mechanisms 7 on the two sides, the drawing mechanisms 7 are started, the position of the steel pipe 8 in the groove 21 is adjusted and tensioned, so that the steel pipe 8 can be fixed on one hand, and the steel pipe 8 is adjusted to be positioned in the center of the groove 21 and positioned on the same vertical plane with the central axis of the groove 21 on the other hand. And then starting the laser ranging mechanism 4 again, detecting the distance to the outer side wall of the steel pipe 8, adjusting the lifting platform 2, and stopping and keeping the height position when the distance detected by the laser ranging mechanism 4 is consistent, so that the central axis of the steel pipe 8 is superposed with the central axis of the circular ring track. Then, the cutting mechanism 5 is installed on the clamping mechanism, the cutting portion of the cutting mechanism 5 is adjusted to be aligned with the steel pipe 8 for cutting, the line drawing mechanism can be clamped and fixed on the clamping mechanism before cutting, the trolley is started to run along the circular track, line drawing is conducted on the steel pipe 8, the cutting circular line is obtained, then the line drawing mechanism is taken down, the cutting mechanism 5 is clamped and fixed, the cutting portion is aligned with the cutting circular line, the trolley is started to cut, the trolley can be driven manually or by a motor, and the cutting mechanism is the prior art and is not described in detail.

Through the above operation, can make the center pin of steel pipe 8 and the center pin of slot 21 be located same vertical face earlier, be located same vertical face with the orbital center pin of ring promptly, then 8 height of adjustment steel pipe, under the assistance of laser rangefinder mechanism 4, can make 8 center pins of steel pipe and the coincidence of ring track center pin to ensure that each cutting loop line is just circular, make the cutting accurate, reduced the remedy engineering in later stage.

In another technical solution, the positioning device further includes a pair of auxiliary positioning mechanisms 6, the pair of auxiliary positioning mechanisms 6 are respectively located at two sides of the support 1 and the positioning mechanism, and the auxiliary positioning mechanisms 6 include:

a support column 61, the bottom of which is provided with a universal wheel 62;

a support plate 63 fixed to the support post 61;

and the tray 64 is in an arc shape, and the tray 64 is fixed on the supporting plate 63 and used for receiving the steel pipe 8 to be cut.

In the above technical solution, because the steel pipe 8 has a large diameter and is not light, when the steel pipe 8 is adjusted by using the pulling mechanism 7, the auxiliary positioning mechanism 6 can be used to place both sides of the steel pipe 8 on the tray 64 without leaving the groove 21, only to reduce the pressure of the steel pipe 8 on the groove 21, and then the pulling mechanism 7 is started to pull and fix, so that the position of the central axis of the steel pipe 8 can be easily adjusted, and the central axis of the steel pipe 8 and the central axis of the groove 21 are located on the same vertical plane.

In another technical scheme, the lifting platform 2 comprises an electric cylinder arranged on the support 1 and a top plate driven by the electric cylinder to lift, and the top plate is provided with the groove 21. The electricity jar open and stop the convenience, and the stroke distance control is accurate, consequently the lift displacement of control steel pipe 8 that can be accurate to make the central axis of steel pipe 8 and the orbital center pin coincidence of ring.

In another technical solution, the cross section of the groove 21 perpendicular to the symmetry axis is circular arc. The curved grooves 21 help to match steel pipes 8 of different diameters, so that the central axes of the steel pipes 8 and the central axes of the grooves 21 are located on the same vertical plane.

In another solution, the pulling mechanism 7 comprises:

a hoist 71 fixed to the side plate 22;

the side locking belt 72 comprises a plurality of rigid cambered plates 73 arranged at intervals and a pair of steel wire ropes 74 connecting the two adjacent cambered plates 73, one ends of the two steel wire ropes 74 positioned at the uppermost end are symmetrically fixed on the same joint rope 75, the joint rope 75 is fixed on the winch 71, and one ends of the two steel wire ropes 74 positioned at the lowermost end are fixed outside the groove 21.

In the above technical scheme, through the cooperation of cambered plate 73 and wire rope 74, can more laminate with steel pipe 8 surface, be favorable to the taut effect of steel pipe 8 to cambered plate 73's length setting is long enough, can reduce steel pipe 8's skew. The winch 71 runs stably, the tension force is strong, the steel pipe 8 can be firmly fixed, and the stability of the steel pipe 8 is improved when the cutting mechanism 5 runs.

In another technical solution, the cutting mechanism 5 is a torch cutting machine. The flame cutting machine has high cutting efficiency and can improve the construction efficiency.

In another embodiment, the circular track is fixed to the support 1 by means of a plurality of flanges. The flange connection is reliable and convenient to detach.

In another technical scheme, the circular track is formed by splicing two semicircular arc-shaped tracks, wherein two connecting end surfaces of one arc-shaped track are respectively provided with a triangular-distribution plug-in post, and two connecting end surfaces of the other arc-shaped track are respectively provided with plug-in holes 34 which are in one-to-one correspondence with the plug-in posts. The accuracy and the steadiness of arc track concatenation can be promoted.

In another solution, lugs 35 are oppositely arranged on the back of the splicing part of the arc-shaped tracks, and two opposite lugs 35 are connected through flanges. The overall stability of the circular track can be improved by the connection of the flange and the lugs 35.

In another technical scheme, the number of the laser ranging mechanisms 4 is 2, and the laser ranging mechanisms are symmetrically arranged on the circular track from top to bottom. Because the position adjustment of the central shaft is carried out on the steel pipe 8 by adopting the groove 21 and the traction mechanism 7, namely the central shaft of the steel pipe 8 and the central shaft of the circular ring track are positioned on the same vertical surface, the fact that the distance between the outer side wall of the steel pipe 8 and the inner side wall of the circular ring track is different only in the vertical direction is shown, therefore, only two laser ranging mechanisms 4 are needed, the distance between the outer side wall of the steel pipe 8 and the inner side wall of the circular ring track is detected in the up-and-down symmetrical mode, when the distances are consistent, the fact that the central shafts of the steel pipe 8 and the circular ring track are coincident is shown, and the alignment efficiency can be improved.

The technical scheme can also comprise the following technical details so as to better realize the technical effects:

rubber layers are laid on the inner surfaces of the tray 64, the groove 21 and the cambered surface plate 73 on the side locking belt 72, and have the functions of preventing skidding and protecting the outer wall of the steel pipe 8.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.