CN111015342A

CN111015342A - Cut hole installation positioning platform

Info

Publication number: CN111015342A
Application number: CN201911207192.2A
Authority: CN
Inventors: 龚珙娣
Original assignee: Shanghai Minggu Civil Defense Equipment Co Ltd
Current assignee: Shanghai Minggu Civil Defense Equipment Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-04-17

Abstract

The invention discloses a hole cutting installation positioning platform, wherein angle steel can be movably placed on the hole cutting installation positioning platform, and when the angle steel moves, when the hole cutting position on the angle steel is positioned below a hole cutting machine, the hole cutting installation positioning platform can limit the angle steel, and the angle steel can not move on the hole cutting installation positioning platform until the hole is cut. The invention has simple structure, convenient use, low use cost, energy saving and safety, and improves the working efficiency and the hole cutting precision.

Description

Cut hole installation positioning platform

Technical Field

The invention relates to a positioning platform, in particular to a positioning platform for installing a cutting hole.

Background

The angle steel is commonly called angle iron and is long steel with two sides perpendicular to each other to form an angle, and the angle steel can form various stress members according to different requirements of structures and can also be used as a connecting piece between members. The method is widely applied to various building structures and engineering structures, such as house beams, bridges, power transmission towers, hoisting and transporting machines, ships, industrial furnaces, reaction towers, container racks, cable trench supports, power distribution pipes, bus bar support installation, warehouse goods shelves and the like.

The angle steel generally needs to cut the hole on it when being as the connecting piece, generally through placing the angle steel on a workstation among the prior art, then cuts the hole through the hole cutting machine, carries away the angle iron from the workstation after cutting the hole.

The above-described method has the following problems:

(1) the angle steel needing to be punched is generally in batch, after the hole cutting machine is used for punching a first angle steel, the angle steel needs to be moved away from a workbench, and then the next angle steel is placed on the workbench for punching, so that the working efficiency is very low;

(2) when the hole cutting machine is used for cutting holes in diagonal steels, workers are required to continuously move each angle steel to adjust the hole cutting positions, so that the working efficiency is very low, the movement of the workers is only roughly judged, and the precision of the hole cutting positions is not high.

In addition, in the prior art, a hole cutting positioning device for conveying and positioning angle steel consisting of electric components such as a motor and a conveying belt is adopted, but the hole cutting positioning device is complex in structure, very high in cost, power-saving and safe, and the like.

Disclosure of Invention

The invention aims to solve the problems and provides a positioning platform for installing a cutting hole.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a cut hole installation positioning platform, the angle steel is movably placed on cut hole installation positioning platform to the angle steel is when removing, and when the cut hole position on the angle steel was located the tapping machine below, cut hole installation positioning platform can be spacing to the angle steel, and after the cut hole, the angle steel just can continue to remove on cut hole installation positioning platform.

Through adopting above-mentioned technical scheme, can place a plurality of angle steels together on cut hole installation positioning platform, first angle steel back of cutting the hole can remove first angle steel, then with next angle steel quick travel to cut the hole position, improved work efficiency.

In addition, the hole cutting positions are adjusted without continuously moving each angle steel by workers, so that the working efficiency is further improved, and the precision of the hole cutting positions is also improved.

In a preferred embodiment of the invention, the hole cutting installation and positioning platform comprises a workbench and a mounting frame, wherein a sliding structure is arranged on the workbench, angle steel can perform sliding displacement on the sliding structure, the mounting frame is arranged on one side of the workbench, a limiting structure is arranged on the mounting frame, the hole cutting machine is also arranged on the mounting frame, the limiting structure can be contacted with the angle steel on the sliding structure, and when the angle steel is contacted with the limiting structure, the hole cutting position on the angle steel is positioned below the hole cutting machine.

In a preferred embodiment of the present invention, the sliding structure comprises a plurality of identical first roller assemblies, the first roller assemblies are respectively spaced on the workbench at equal intervals and are positioned on the same horizontal plane, each first roller assembly comprises a first roller bracket, a first roller and a supporting plate, the first roller bracket is detachably mounted on the upper surface of the workbench, the first roller is rotatably arranged on the first roller bracket, the supporting plate is positioned on one side of the first roller bracket and is flush with the height of the first roller, the angle iron comprises a horizontal panel and a vertical panel, and the horizontal panel is horizontally placed on each supporting plate and is in contact with each first roller.

Through adopting above-mentioned technical scheme, the staff only needs to promote the angle steel with the hand, just can realize the removal of angle steel, and is very convenient and practical to sliding structure's structure is also very simple, does not need electric control, both energy-conservation, safety again.

In a preferred embodiment of the present invention, the worktable is provided with a through hole, and the through hole is located below the hole cutting machine and between two adjacent first roller assemblies.

Through adopting above-mentioned technical scheme for the steel sheet accessible through-hole that cuts off on the angle steel directly falls to the ground, and can not fall on the workstation, prevents that the workstation from damaging.

In a preferred embodiment of the present invention, the limiting structure comprises a first stopper, and the first stopper is rotatably disposed at one end of the mounting bracket and is contactable with one end of the horizontal panel.

Through adopting above-mentioned technical scheme, the staff only need stir first dog just can be spacing to the angle steel, and is very convenient and practical to sliding structure's structure is also very simple, does not need electric control, both energy-conservation, safety again.

In a preferred embodiment of the present invention, the limiting structure further includes a second stopper, and the second stopper is rotatably disposed at the other end of the mounting frame and is contactable with the other end of the horizontal panel.

Through adopting above-mentioned technical scheme for the angle steel removes on the workstation two directions and all can cut the hole, has improved the cut hole efficiency.

In a preferred embodiment of the present invention, the limiting structure includes a telescopic cylinder and a stop block, the telescopic cylinder is disposed on the mounting frame, the telescopic cylinder is provided with a connecting block, and the stop block is rotatably disposed on the connecting block.

Through adopting above-mentioned technical scheme for limit structure can carry out spacingly to the angle steel of different length and the angle steel of same length but the notch hole position is different, has improved application range and has practiced thrift the cost.

In a preferred embodiment of the invention, the workbench is provided with at least two rotatable third stoppers, the third stoppers are in contact with the end of the horizontal panel, and when the third stoppers are in contact with the end of the horizontal panel, the hole cutting position on the horizontal panel is positioned below the hole cutting machine.

Through adopting above-mentioned technical scheme for this application also is applicable to and opens a plurality of hole sites on an angle steel, has further improved application range and has practiced thrift the cost.

In a preferred embodiment of the invention, at least two identical second roller assemblies are arranged on the mounting frame, each second roller assembly comprises a second roller support and a second roller, each second roller support is arranged on the mounting frame, each second roller is rotatably arranged on the corresponding second roller support and is in contact with one side of the vertical panel of the angle iron, and each supporting plate is provided with a rotatable third roller which is in contact with the other side of the vertical panel.

Through adopting above-mentioned technical scheme, improved the stability of angle steel when removing, prevented that the angle steel direction from taking place the skew when removing to influence the precision of cut hole position.

In a preferred embodiment of the invention, the workbench is further provided with at least one locking assembly capable of limiting the angle steel, the locking assembly comprises a mounting plate and a screw rod, the mounting plate is arranged on the workbench and is not in contact with the angle steel, the mounting plate is provided with a screw hole matched with the screw rod, one end of the screw rod can be inserted into the screw hole and can move through rotating in the screw hole, and the screw rod can be in contact with a vertical panel of the angle steel.

Through adopting above-mentioned technical scheme, can improve the stability of angle steel when the cut hole, because the hole cutting machine is when the cut hole, the angle steel can rock on sliding structure to influence the precision of cut hole position, and can lock the angle steel through locking Assembly, prevent that the angle steel from rocking.

In addition, the locking assembly is very simple in structure, does not need electric control, and is energy-saving and safe.

The invention has the beneficial effects that:

the invention has simple structure, convenient use, low use cost, energy saving and safety, and improves the working efficiency and the hole cutting precision.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the assembly of the present invention with angle iron;

fig. 3 is a schematic structural view of the limiting structure of the present invention in an optimized structure.

Reference numerals: 100. angle steel; 110. a horizontal panel; 120. a vertical panel; 200. a work table; 210. a first roller assembly; 211. a first roller bracket; 212. a first drum; 213. a support plate; 214. a third drum; 220. a through hole; 300. a mounting frame; 310. a second roller assembly; 311. a second roller bracket; 312. a second drum; 320. mounting a bottom plate; 410. a first stopper; 420. a second stopper; 430. a telescopic cylinder; 431. a stopper; 440. connecting blocks; 450. a semicircular ring; 500. a third stopper; 510. a connecting plate; 610. mounting a plate; 620. a screw.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.

Referring to fig. 1 and 2, the hole cutting mounting and positioning platform provided by the invention is used in cooperation with an angle iron 100, the angle iron 100 is movably placed on the hole cutting mounting and positioning platform, and when the angle iron 100 moves, when the hole cutting position on the angle iron 100 is located below a hole cutting machine, the hole cutting mounting and positioning platform can limit the angle iron 100, and after the hole is cut, the angle iron 100 can continue to move on the hole cutting mounting and positioning platform.

Like this, can place a plurality of angle steel 100 together on cut hole installation positioning platform, treat first angle steel 100 cut hole back, can remove first angle steel, then with next angle steel 100 fast migration to cut the hole position, improved work efficiency.

In addition, according to the method and the device, the position of the hole cutting position is adjusted without continuously moving each angle steel 100 by workers, so that the working efficiency is further improved, and the precision of the position of the hole cutting position is also improved.

The above-mentioned positioning platform for installing the cutting hole may specifically include a worktable 200 and a mounting frame 300.

The workbench 200 is horizontal, the bottom of the workbench is supported by the support column, a sliding structure is arranged on the workbench 200, and the angle iron 100 can slide and move on the sliding structure.

The sliding structure may specifically include a plurality of identical first roller assemblies 210, the first roller assemblies 210 are respectively spaced on the workbench 200 at regular intervals and are located on the same horizontal plane, and the angle iron 100 is horizontally displaced by the rolling of the first roller assemblies 210.

The first roller assembly 210 may specifically include a first roller bracket 211, a first roller 212, and a support plate 213.

A first roller holder 211 for mounting the first roller 212 and ensuring that the first roller 212 can rotate thereon.

The first roller bracket 211 may specifically include two symmetrical connecting plates, the two connecting plates are vertically disposed on the upper surface of the working platform 200, and the two connecting plates are respectively provided with a connecting hole.

The first roller 212 is of an existing structure, a rotating end at one end of the first roller is inserted into a connecting hole of one connecting plate, a rotating end at the other end of the first roller 212 is inserted into a connecting hole of the other connecting plate, so that the first roller can rotate on the first roller bracket 211, and the rotating direction of the first roller 212 is the same as the displacement direction of the angle steel.

And a support plate 213 disposed on the upper surface of the worktable 200 and located at one side of the first roller bracket 211, and having a height flush with that of the first roller 212, for supporting the angle iron 100, thereby improving stability of the angle iron 100 when moving on the first roller 212.

The angle iron 100 generally comprises a horizontal panel 110 and a vertical panel 120, the position to be perforated is located on the horizontal panel 110, the horizontal panel 110 can be placed on each support plate 213, and the lower surface is in contact with the first roller 212.

Through the sliding structure that above-mentioned structure constitutes for the staff only needs to promote angle steel 100 with the hand, just can realize angle steel 100's removal, and is very convenient and practical, and sliding structure's structure is also very simple, does not need electric control, both energy-conservation, safety again.

In addition, a rectangular through hole 220 is formed in the workbench 200, the through hole 220 is located just below the hole cutting machine and located between two adjacent first roller assemblies 210, so that the steel plate cut off on the angle iron 100 can directly fall onto the ground through the through hole 220 and cannot fall onto the workbench 200, and the workbench 200 is prevented from being damaged.

The mounting frame 300, which is a conventional structure and may be a rectangular table for mounting a hole cutting machine, is disposed at one side of the worktable 200, and has a height flush with the first roller 212 and does not contact with the first roller 212, and a sliding groove may be formed therebetween, thereby facilitating the movement of the vertical panel 120 of the angle iron 100.

This application with limit structure direct mount on mounting bracket 300, both simplified the structure like this, also practiced thrift the cost, limit structure is used for spacing angle steel 100 to moving on workstation 200.

Limiting structure and angle steel 100 contactable to when angle steel 100 and limiting structure contact, the cut hole position on the angle steel 100 just is located the below of tapping machine, and the tapping machine can directly cut the hole like this, need not remove angle steel 100 again, adjusts the cut hole position.

The limiting structure can specifically comprise a first stop block 410, the first stop block 410 is rectangular, a rotating shaft is arranged at one end of the mounting frame 300 close to one side of the workbench 200, the first stop block 410 is connected with the rotating shaft and can rotate 0-180 degrees in the rotating shaft, when the first stop block 410 rotates anticlockwise on the rotating shaft to be perpendicular to the workbench 200, the end of the angle steel 100 moving on the workbench 200 can be in contact with the first stop block 410, so that the angle steel 100 is limited, the angle steel 100 can not move any more, the hole cutting position on the angle steel 100 is just located below the hole cutting machine, and the hole cutting machine can directly cut holes.

When the end of the angle steel 100 contacts the first stopper 410, the hole cutting position on the angle steel 100 is just below the hole cutting machine, and the hole positions on the same batch of angle steels 100 are the same, so the distance between the hole cutting machine on the mounting frame 300 and the first stopper 410 is set in advance.

Thus, through the limiting structure formed by the structure, the angle steel 100 can be limited only by shifting the first stop block 410 by a worker, so that the angle steel limiting structure is very convenient and practical, and the sliding structure is also very simple in structure, does not need electric control, is energy-saving and is safe.

Further, since the angle iron 100 can move in both left and right directions on the table 200, if the first stopper 410 can only limit the angle iron 100 when it moves in one direction, the moving direction of the angle iron 100 is limited.

The limiting structure further comprises a second stopper 420, which is mounted at the other end of the mounting frame 300 close to the workbench 200 and can contact with the other end of the angle steel 100, and the structure and the function of the limiting structure are the same as those of the first stopper 410, so that the angle steel 100 can be cut in two directions on the workbench 200, and the hole cutting efficiency is improved.

The limit structure that above-mentioned structure constitutes can only be suitable for same length and each angle steel that the trompil position is the same, and application range is very limited, but when meeting each angle steel of different length and each angle steel that same length nevertheless the cut hole position is different, just can't use, uses very inconveniently.

Referring to fig. 3, the present application also provides an optimized structure of the stopper structure, which includes a telescopic cylinder 430 and a stopper 431.

A mounting base plate 320 is provided at one end of the mounting frame 300, the telescopic cylinder 430 is mounted on the mounting base plate 320, a connecting block 440 is welded to the end of the telescopic cylinder 430, and a semi-circular ring 450 is welded to the upper surface of the connecting block 440.

The stopper 431 is rectangular, a rotating hole correspondingly matched with the semicircular ring 450 is formed in the stopper 431, the stopper 431 is rotatably arranged on the semicircular ring 450 through the rotating hole and can rotate 0-180 degrees on the semicircular ring 450, when the stopper 431 rotates anticlockwise on the semicircular ring 450 to be perpendicular to the workbench 200, the end part of the angle steel 100 moving on the workbench 200 can be in contact with the stopper 431, so that the angle steel 100 is limited, the angle steel 100 cannot move any more, the hole cutting position on the angle steel 100 is just positioned below the hole cutting machine, and the hole cutting machine can directly cut holes.

Like this, through control telescopic cylinder 430 is flexible, can drive dog 431 and carry out horizontal migration on mounting bracket 300, can adjust the stop position of dog 431 to angle steel 100 like this wantonly to make limit structure also can carry on spacingly to each angle steel 100 of different length and each angle steel 100 that same length but the slot cutting position is different, improved the application range of this application.

In addition, the limiting structure formed by the optimized structure is very simple in structure, only one air cylinder is needed, and only one stop 431 is needed, so that a plurality of stops are not needed.

Moreover, the shifting block 431 is very convenient to move and fix, and only the telescopic cylinder 430 needs to be controlled to stretch.

No matter above-mentioned limit structure is only used for the condition that the number of cutting the hole is one on angle steel 100, and when meetting the number of cutting the hole on angle steel 100 and be the majority, this application just can't be suitable for, need more slidingly cut hole locating platform again, has improved use cost.

Referring to fig. 1 and 2, at least two third rotatable stoppers 500 are provided on the table 200.

The third stopper 500 is also rectangular in shape, and is disposed on the worktable 200 and away from the mounting bracket 300.

The third stop 500 is also in contact with the end of the horizontal panel 110 of the angle iron 100, and when the third stop 500 is in contact with the end of the horizontal panel 110, the next hole cutting location on the horizontal panel 110 is just below the hole cutting machine.

The number of the third stoppers 500 can be determined according to the number of the holes required to be cut on the angle iron 100, and one third stopper 500 is additionally arranged every time one hole is added.

In addition, in order to increase or decrease the number of the third stoppers 500 on the workbench 200, the third stoppers 500 are detachably mounted on the workbench 200, specifically, a plurality of connection plates 510 are uniformly spaced on the workbench 200, the connection plates 510 are mounted on one side of the workbench 200 by screws, a rotation shaft is disposed on each connection plate 510, and the third stoppers 500 are disposed on the rotation shafts, thereby achieving rotation, and the rotation mode of the third stoppers 500 is the same as the above-mentioned limit structure, so that redundant description is omitted.

Therefore, according to actual requirements, the workbench 200 is provided with the corresponding number of the connecting plates 510, which is very convenient.

In addition, a corresponding number of third stoppers 500 may be provided on both sides of the table 200, respectively, so that the angle iron 100 can move in both directions.

Through adopting above-mentioned third dog 500 for this application also is suitable for angle steel 100 to cut the condition that the hole number is the majority, makes the applicable angle steel 100 that various hole requirements were cut to this application, improves application range to the biggest.

At least two identical second roller assemblies 310 are arranged on the installation frame 300, the specific number can be two, the second roller assemblies 310 are respectively arranged at two ends of one side, close to the workbench 100, of the installation frame 300, and the second roller assemblies 310 are used for guiding the angle steel 100, so that the stability of the angle steel 100 during moving is further improved.

The second roller assembly 310 specifically includes a second roller support 311 and a second roller 312, and the structures of the second roller support 311 and the second roller 312 are the same as those of the first roller support 211 and the first roller 212, so that the description is omitted here for brevity, but the arrangement direction of the second roller 312 is perpendicular to the first roller 212.

The second roller 312 may be in contact with one side of the vertical panel 120 of angle iron 100, and as the horizontal panel 110 of angle iron 100 moves along the first roller 212, the vertical panel 120 also moves along the second roller 312.

In addition, a rotatable third roller 214 is arranged on the supporting plate 213, the third roller 214 is arranged in the same direction as the second roller 312, and the third roller 214 is in contact with the other side of the vertical panel 120, so that the displacement direction of the angle steel 100 can be limited by the cooperation of the third roller 214 and the second roller 312, and the angle steel 100 is prevented from being deviated in direction when moving, and the accuracy of the hole cutting position is influenced.

Still be equipped with at least one locking Assembly that can be spacing to the angle steel on workstation 200, because the tapping machine is when the cut hole, angle steel 100 can rock on sliding structure to influence the precision of cut hole position, and can lock angle steel 100 through locking Assembly, prevent that the angle steel from rocking.

The locking assembly specifically comprises a mounting plate 610 and a screw 620, the mounting plate 610 is arranged on the workbench 200 and is not in contact with the angle steel 100, a screw hole matched with the screw 610 is formed in the mounting plate 610, and one end of the screw 620 can be inserted into the screw hole and can move through rotating in the screw hole.

Thus, the screw 620 can rotate on the mounting plate 610 to contact with the vertical panel 120 of the angle iron 100, so that the angle iron 100 is locked.

The following is a specific working process of the present application:

firstly, sequentially placing a plurality of angle steels 100 on a sliding structure on a workbench 200 in parallel, then anticlockwise rotating a first stop block 410 or a second stop block 420 to enable the first stop block 410 or the second stop block 420 to be perpendicular to the workbench 200, then pushing the first angle steel 100 on the sliding structure until the angle steel 100 is in contact with the first stop block 410 or the second stop block 420, then rotating a screw 620 to lock the angle steel 100, and then starting a hole cutting machine to cut holes in the angle steel 100;

after the hole is cut, the first stop block 410 or the second stop block 420 is rotated clockwise, then the screw 620 is rotated to be separated from the angle steel 100, and then the first angle steel 100 is pushed forwards continuously, so that the first angle steel 100 is far away from the hole cutting machine;

and finally, repeating the steps, and sequentially cutting holes in each angle steel 100.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a cut hole installation positioning platform, its characterized in that, angle steel (100) movably place on cut hole installation positioning platform to angle steel (100) are when removing, and when the hole cutting position on angle steel (100) was located the tapping machine below, cut hole installation positioning platform can be spacing to angle steel (100), and after up to the hole cutting, angle steel (100) just can continue to remove on cut hole installation positioning platform.

2. The hole cutting, installing and positioning platform of claim 1, comprising a workbench (200) and a mounting frame (300), wherein a sliding structure is arranged on the workbench (200), the angle steel (100) can slide and displace on the sliding structure, the mounting frame (300) is arranged on one side of the workbench (200), a limiting structure is arranged on the mounting frame (300), the hole cutting machine is also arranged on the mounting frame (300), the limiting structure can be contacted with the angle steel (100) on the sliding structure, and when the angle steel (100) is contacted with the limiting structure, the hole cutting position on the angle steel (100) is positioned below the hole cutting machine.

3. A slot-cutting mounting and positioning platform according to claim 2, wherein the sliding structure comprises a plurality of identical first roller assemblies (210), the first roller assemblies (210) are respectively spaced on the worktable (200) at the same distance and on the same horizontal plane, each first roller assembly (210) comprises a first roller bracket (211), a first roller (212) and a support plate (213), the first roller bracket (211) is detachably mounted on the upper surface of the worktable (200), the first roller (212) is rotatably disposed on the first roller bracket (211), the support plate (213) is positioned at one side of the first roller bracket (211) and is level with the height of the first roller (212), the angle steel (100) comprises a horizontal panel (110) and a vertical panel (120), the horizontal panel (110) is horizontally placed on each support plate (213), and is in contact with each first roller (212).

4. A hole-cutting mounting and positioning platform according to claim 3, wherein the worktable (200) is provided with a through hole (220), and the through hole (220) is positioned below the hole-cutting machine and between two adjacent first roller assemblies (210).

5. A slot-mounting positioning platform as claimed in claim 3, wherein the limiting structure comprises a first stop (410), the first stop (410) is rotatably disposed at one end of the mounting frame (300) and is contactable with one end of the horizontal panel (110).

6. A slot-cutting mounting and positioning platform as claimed in claim 5, wherein the limiting structure further comprises a second stopper (420), the second stopper (420) is rotatably disposed at the other end of the mounting frame (300) and is contactable with the other end of the horizontal panel (110).

7. A positioning platform for installation of cutting hole according to claim 3, characterized in that the limiting structure comprises a telescopic cylinder (430) and a stop block (431), the telescopic cylinder (430) is disposed on the mounting frame (300), a connecting block (440) is disposed on the telescopic cylinder (430), and the stop block (431) is rotatably disposed on the connecting block (440).

8. A hole cutting, mounting and positioning platform as claimed in claim 6 or 7, characterized in that the worktable (200) is provided with at least two rotatable third stoppers (500), the third stoppers (500) are in contact with the end of the horizontal panel (110), and when the third stoppers (500) are in contact with the end of the horizontal panel (110), the hole cutting position on the horizontal panel (110) is below the hole cutting machine.

9. A slot-mounting positioning platform according to claim 3, wherein at least two identical second roller assemblies (310) are provided on the mounting frame (300), the second roller assemblies (310) comprise second roller supports (311) and second rollers (312), the second roller supports (311) are provided on the mounting frame (300), the second rollers (312) are rotatably provided on the second roller supports (311) and contact with one side of the vertical panel (120) of the angle iron (100), and the support plate (213) is provided with a rotatable third roller (214), and the third roller (214) contacts with the other side of the vertical panel (120).

10. A positioning platform for installation and cutting of holes according to any one of claims 2-9, characterized in that the worktable (200) is further provided with at least one locking component capable of limiting the angle iron (100), the locking component comprises a mounting plate (610) and a screw rod (620), the mounting plate (610) is arranged on the worktable (200) and is not in contact with the angle iron (100), the mounting plate (610) is provided with a screw hole matched with the screw rod (620), one end of the screw rod (620) can be inserted into the screw hole and can move through rotating in the screw hole, and the screw rod (620) can be in contact with the vertical panel (120) of the angle iron (100).