CN210253701U

CN210253701U - Self-made bending tool

Info

Publication number: CN210253701U
Application number: CN201921011430.8U
Authority: CN
Inventors: 侯立伟; 冯兴满
Original assignee: Draz Group Co ltd
Current assignee: Draz Group Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-04-07
Anticipated expiration: 2029-07-02

Abstract

The utility model relates to the field of thermal power plant thermal instrument pressure pipe construction equipment, in particular to a self-made bending tool, which comprises a base, a vertical steel plate is welded at the edge of the top of the base, an upper threaded through hole and a lower threaded through hole are respectively arranged at intervals at the upper part and the lower part of the vertical steel plate, an upper bolt and a lower bolt are respectively inserted in the upper thread through hole and the lower thread through hole in a screwing way, the outer ends of the upper bolt and the lower bolt penetrate through the vertical steel plate, a supporting seat is screwed and sleeved on the lower bolt, the top of the supporting seat is an arc-shaped curved surface, a lower abutting nut for abutting against the supporting seat is screwed on the lower bolt outside the supporting seat, a pressing plate is screwed on the upper bolt, the pressing plate can swing around the upper bolt on the front side and the rear side of the vertical steel plate, and an upper abutting nut is screwed on the upper bolt on the outer side of the pressing plate; and a strip-shaped clamping groove is formed in the base below the arc-shaped curved surface at the foremost end of the supporting seat.

Description

Self-made bending tool

Technical Field

The utility model relates to a thermal power factory thermal instrument connecting pipe construction instrument field, in particular to utensil, especially self-control bending over a slow fire instrument that is applicable to the installation construction that thermal power plant, thermal power plant thermal instrument got the source pipe.

Background

The construction of the thermotechnical instrument pressure guide pipe of the thermal power plant occupies a large work load of the professional, the laying of the instrument pipe is mainly designed according to the layout of field equipment and pipeline measuring points, and the space conversion on a laying path is large, so that a large number of bent pipes with different angles can be bent when the instrument pipe is laid so as to match the requirement of the layout on the field. However, the bending method in common use controls the bending amplitude by using a simple tool according to the experience of constructors, the bending efficiency and the bending quality are poor, especially the appearance quality of the instrument tube construction is seriously affected by the inconsistent bending amplitudes when the instrument tubes are arranged in rows, and more adverse factors are generated on the standard production of a unit, the project development and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical scheme that one of above-mentioned technical problem adopted and be: the self-made bending tool comprises a base, wherein a vertical steel plate is welded at the edge of the top of the base, an upper threaded through hole and a lower threaded through hole are respectively arranged at the upper part and the lower part of the vertical steel plate at intervals, an upper bolt and a lower bolt are respectively inserted into the upper threaded through hole and the lower threaded through hole in a screwing manner, the outer ends of the upper bolt and the lower bolt penetrate through the vertical steel plate, a supporting seat is screwed and sleeved on the lower bolt, the top of the supporting seat is an arc-shaped curved surface, a lower abutting nut for abutting against the supporting seat is screwed on the lower bolt outside the supporting seat, a pressing plate is screwed on the upper bolt, the pressing plate can swing around the upper bolt on the front side and the rear side of the vertical steel plate, and an upper abutting nut is screwed on the upper bolt outside the pressing plate; the bending device comprises a supporting seat and is characterized in that a strip clamping groove is formed in the base below the arc-shaped curved surface at the foremost end of the supporting seat, a first handle is welded at the rear end of the base, a second handle is welded at the rear end of a pressing plate, an arc-shaped pipe clamping groove with a semicircular cross section is formed in the surface of the arc-shaped curved surface of the supporting seat, and the arc-shaped pipe clamping groove is used for aligning a vertical central plane of a pipe to be bent.

Preferably, the first handle is arranged in parallel, and the rear end of the second handle is arranged obliquely upward.

Preferably, the pressing plate and the supporting base share a central plane in a vertical direction.

Preferably, the circle center of the arc-shaped curved surface of the supporting seat is coaxial with the lower threaded through hole.

Preferably, the angle of the curved surface is greater than 180 °.

Preferably, the outer side wall of the supporting seat is provided with a plurality of angle scale marks, the zero point scale of the angle scale marks is located at the starting point of the arc-shaped curved surface at the horizontal position, the outer side wall of the pressing plate is provided with a plurality of length scale marks, and the zero point of each length scale mark is located at the intersection of the circle center connecting line of the upper threaded through hole and the lower threaded through hole and the outer side wall of the pressing plate.

The beneficial effects of the utility model are embodied in: the self-made bending tool is used, the operation method is simple and convenient, the tooling bending can be carried out on the space conversion part of the instrument tube, the bending amplitude and the roundness are consistent, and the bending efficiency and the quality are greatly improved compared with those of a common bending method; the bending angles and the bending amplitudes of all bent pipes can be observed and controlled accurately, so that the construction quality and the construction efficiency of the instrument pipe are greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or components are generally identified by like reference numerals. In the drawings, elements or components are not necessarily drawn to scale.

Fig. 1 is a schematic view of a front side three-dimensional structure of the present invention.

Fig. 2 is a schematic diagram of the rear side three-dimensional structure of the present invention.

Fig. 3 is a schematic perspective view of the bending instrument tube of the present invention.

Fig. 4 is a schematic front view of fig. 3.

Fig. 5 is a schematic structural view of the bending instrument tube of the present invention at 180 °.

Fig. 6 is a schematic view illustrating a flow of the swing position of the pressing plate according to the present invention.

Fig. 7 is a schematic structural diagram of the assembly of the base and the vertical steel plate of the present invention.

In the figure, 1, a base; 2. Erecting a steel plate; 3. an upper threaded through hole; 4. A lower threaded through hole; 5. Screwing a bolt; 6. a lower bolt; 7. a supporting seat; 8. an arc-shaped curved surface; 9. the lower abutting nut is tightly pressed; 10. a pressing plate; 11. tightly pressing the nut; 12. a strip-shaped clamping groove; 13. a first handle; 14. a second handle; 15. an arc-shaped pipe clamping groove; 16. angle scale lines; 17. length scale lines; 18. an instrument tube.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1-7, the homemade bending tool comprises a base 1, a vertical steel plate 2 welded at the top edge of the base 1, an upper threaded through hole 3 and a lower threaded through hole 4 are respectively arranged at the upper part and the lower part of the vertical steel plate 2 at intervals, an upper bolt 5 and a lower bolt 6 are respectively screwed and inserted in the upper thread through hole 3 and the lower thread through hole 4, the outer ends of the upper bolt 5 and the lower bolt 6 both penetrate through the vertical steel plate 2, a supporting seat 7 is screwed and sleeved on the lower bolt 6, the top of the supporting seat 7 is an arc-shaped curved surface 8, a lower abutting nut 9 for abutting against the supporting seat is screwed on the lower bolt 6 outside the supporting seat 7, a pressing plate 10 is screwed on the upper bolt 5, the pressing plate 10 can swing around the upper bolt 5 on the front side and the rear side of the vertical steel plate 2, and an upper abutting nut 11 is screwed on the upper bolt 5 on the outer side of the pressing plate 10; the bending device is characterized in that a strip clamping groove 12 is formed in the base 1 below the arc-shaped curved surface 8 at the foremost end of the supporting seat 7, a first handle 13 is welded at the rear end of the base 1, a second handle 14 is welded at the rear end of the pressing plate 10, an arc-shaped pipe clamping groove 15 with a semicircular cross section is formed in the surface of the arc-shaped curved surface 8 of the supporting seat 7, and the arc-shaped pipe clamping groove 15 is used for aligning a vertical central plane of a pipe to be bent.

The device is provided with a supporting seat 7, a pressing plate 10, a strip clamping groove 12 and other structures, when the device is used for bending a slightly-bent instrument tube 18, firstly, a base 1 of the device needs to be turned by 90 degrees or a certain angle to enable the front end of the base to be in a state of being in contact with the ground, at the moment, the straight instrument tube 18 penetrates through the strip clamping groove 12 and then extends to the front sides of the supporting seat 7 and the pressing plate 10, pre-bending of the instrument tube is realized by pressing and stirring a second handle 14 to the front side, after the pre-bending is realized, the pressing plate is vertically placed, at the moment, the distance from the bottom of the pressing plate to the top of the supporting seat is larger than the outer diameter of the instrument tube, the upper section and the lower section of the pre-bent instrument tube respectively extend into the strip clamping groove and an arc-shaped clamping tube groove 15 at the top of the supporting seat, at the moment, the supporting seat 7 is fixed by fixing a first handle, at this time, since the rear end of the instrument tube 18 is limited and fixed by the long slot 12, the instrument tube 18 is further bent after being pressed by the pressing plate 10, and the angle scale 16 can be observed as required to control the bending angle of the instrument tube 18. In addition, the position of the bent instrument tube also needs to be adjusted manually in the bending process, so that smooth bending is facilitated, and an operator can adjust the instrument tube automatically according to the adjustment requirement in the bending process.

During the bending process, the instrument tube 18 can be aligned with the arc-shaped tube clamping groove 15, and the instrument tube is placed in a bilateral swing offset mode.

Preferably, the first handle 13 is disposed in parallel, and the rear end of the second handle 14 is disposed to be inclined upward.

The structure that the rear end of the second handle 14 is arranged to be inclined upwards can effectively ensure that certain labor-saving effect is achieved in the pressing mode.

Preferably, the pressing plate 10 shares a central plane with the supporting base 7 in the vertical direction.

The stable abutting of the pressing force on the instrument tube 18 is ensured, and the pressing force can be accurately transmitted to the instrument tube 18.

Preferably, the circle center of the arc-shaped curved surface 8 of the supporting seat 7 is coaxial with the lower threaded through hole 4.

Smooth transition during bending can be guaranteed.

Preferably, the angle of the curved surface 8 is greater than 180 °.

The degree of the folded pipe can be achieved when the bent pipe is bent, so that the control of different bending degrees of the instrument tube 18 is achieved, and the maximum bending degree of the bent pipe is guaranteed.

Preferably, a plurality of angle scale marks 16 are arranged on the outer side wall of the supporting seat 7, zero point scales of the angle scale marks 16 are located at the starting point of the arc-shaped curved surface 8 at the horizontal position, a plurality of length scale marks 17 are arranged on the outer side wall of the pressing plate 10, and the zero points of the length scale marks 17 are located at the intersection of the circle center connecting line of the upper threaded through hole 3 and the lower threaded through hole 4 and the outer side wall of the pressing plate 10.

The bending degree and the extending length of the instrument tube 18 of the bending section can be controlled more accurately by observing the scale marks in the bending process, so that the instrument tube 18 can be controlled to be bent accurately.

The working principle is as follows:

the bending of instrument pipe 18 adopts this self-control bending tool to carry out the cold bending, and the chemical properties of steel is unchangeable during the cold bending, and the elbow is neat.

The bending radius of the pipe should not be less than 3 times its outer diameter for a metal pipe. The pipeline is free of cracks and pits after being bent, and the ovality of the bent section is not more than 10%.

The instrumentation tubes 18 are placed on the platform for alignment.

An arcing point is drawn on the instrumentation tube 18.

When the device is used for bending an instrument tube 18 which is slightly bent, firstly, the base 1 of the device needs to be turned by 90 degrees or a certain angle to enable the front end of the device to be in a state of being in contact with the ground, at the moment, the straight instrument tube 18 penetrates through the strip clamping groove 12 and then extends to the front sides of the supporting seat 7 and the pressing plate 10, the instrument tube is pre-bent by pressing the front side and shifting the second handle 14, after the pre-bending is realized, the pressing plate is vertically placed, the pre-bending can be realized by manual simple operation, the distance from the bottom of the pressing plate to the top of the supporting seat is larger than the outer diameter of the instrument tube, the upper section and the lower section of the pre-bent instrument tube are respectively extended into the strip clamping groove and the arc clamping tube groove 15 at the top of the supporting seat, the starting point of the arc scale line 16 of the arc surface by the starting point of the instrument tube 18, the force is, the bearing block 7 is now fixed by fixing the first handle 13, and then the first handle 13 is gripped and pulled upwards to swing.

At this time, since the rear end of the instrument tube 18 is limited and fixed by the long clamping groove 12, the instrument tube will be bent after being pressed by the pressing plate 10, and the angle scale lines 16 can be observed as required to control the bending angle of the instrument tube 18.

When the bending angle is larger than the required angle by 1 degree, the instrument tube 18 is taken out for inspection.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification; to those skilled in the art, any alternative improvements or changes made to the embodiments of the present invention are all within the scope of the present invention.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims

1. Self-control bending tool, its characterized in that: the steel plate support comprises a base, wherein a vertical steel plate is welded at the edge of the top of the base, an upper threaded through hole and a lower threaded through hole are respectively arranged at the upper part and the lower part of the vertical steel plate at intervals, an upper bolt and a lower bolt are respectively screwed and inserted in the upper threaded through hole and the lower threaded through hole, the outer ends of the upper bolt and the lower bolt penetrate through the vertical steel plate, a support seat is screwed and sleeved on the lower bolt, the top of the support seat is an arc-shaped curved surface, a lower abutting nut for abutting against the support seat is screwed and arranged on the lower bolt outside the support seat, a pressing plate is screwed and arranged on the upper bolt, the pressing plate can swing around the upper bolt on the front side and the back side of the vertical steel plate, and an upper abutting nut is screwed and arranged on the upper bolt outside the pressing plate; the bending device comprises a supporting seat and is characterized in that a strip clamping groove is formed in the base below the arc-shaped curved surface at the foremost end of the supporting seat, a first handle is welded at the rear end of the base, a second handle is welded at the rear end of a pressing plate, an arc-shaped pipe clamping groove with a semicircular cross section is formed in the surface of the arc-shaped curved surface of the supporting seat, and the arc-shaped pipe clamping groove is used for aligning a vertical central plane of a pipe to be bent.

2. The homemade simmer bending tool of claim 1, wherein: the first handles are arranged in parallel, and the rear ends of the second handles are arranged in an upward inclined mode.

3. The homemade simmer bending tool of claim 1, wherein: the pressing plate and the supporting seat share a central plane in the vertical direction.

4. The homemade simmer bending tool of claim 1, wherein: the circle center of the arc-shaped curved surface of the supporting seat is coaxial with the lower threaded through hole.

5. The homemade simmer bending tool of claim 1, wherein: the angle of the arc-shaped curved surface is larger than 180 degrees.

6. The homemade simmer bending tool of claim 1, wherein: the outer side wall of the supporting seat is provided with a plurality of angle scale marks, the zero point scale of the angle scale marks is located at the starting point of the arc-shaped curved surface at the horizontal position, the outer side wall of the pressing plate is provided with a plurality of length scale marks, and the zero point of each length scale mark is located at the intersection of the circle center connecting line of the upper threaded through hole and the lower threaded through hole and the outer side wall of the pressing plate.