CN211465609U

CN211465609U - Building steel cutterbar

Info

Publication number: CN211465609U
Application number: CN201920178643.3U
Authority: CN
Inventors: 杨芳芳
Original assignee: Quanzhou Nanyi Industrial Design Service Co ltd
Current assignee: Quanzhou Nanyi Industrial Design Service Co ltd
Priority date: 2019-01-31
Filing date: 2019-01-31
Publication date: 2020-09-11
Anticipated expiration: 2029-01-31

Abstract

The utility model relates to the technical field of steel cutting accessories, in particular to a building steel cutter, which is convenient to disassemble and replace after a cutting blade is passivated after long-term use, thereby improving the use reliability; the placing height of the building steel can be conveniently adjusted according to the size of the building steel, so that the use limitation of the building steel is reduced; the building steel is not easy to shake when being cut, so that the practicability of the building steel is improved; the cutting machine comprises a stand column, a bottom plate, a side plate, a first motor, a transmission column and a cutting blade; the transmission column comprises a dismounting pipe and a dismounting column, a through hole is formed in the left end of the dismounting column, a top limiting hole is formed in the top side of the dismounting pipe in a communicating mode, a bottom limiting hole is formed in the bottom side of the dismounting pipe in a communicating mode, the transmission column further comprises a bolt and a nut, and a rotary lug is arranged at the top end of the bolt; the device also comprises a base, a second motor, a transmission shaft, a driving block and a driving plate; still include two sets of fixed plates, fixed pipe and fixed column, fixed socle end is provided with the layer board, still includes two sets of spacing sliders and spacing spring.

Description

Building steel cutterbar

Technical Field

The utility model relates to a steel cutting auxiliary device's technical field especially relates to a building steel cutterbar.

Background

As is well known, a building steel cutter is an auxiliary device used for cutting building steel in the building construction process to better perform later use, and is widely used in the field of steel cutting; the existing building steel cutter comprises an upright post, a bottom plate and a side plate, wherein the top end of the side plate is connected with the bottom end of the upright post, the bottom end of the side plate is connected with the top end of the bottom plate, the existing building steel cutter also comprises a first motor, a transmission post and a cutting piece, the first motor is arranged on the right side of the upright post, the left end of the transmission post is connected with the right output end of the first motor, and the right end of the transmission post is connected with; when the existing building steel cutter is used, a semi-finished product is placed at the top end of a bottom plate, and a first motor drives a cutting blade on a transmission column to perform contact cutting on the semi-finished product, wherein the first motor is a common electric device in the market, and when the semi-finished product is bought for use, the semi-finished product can be used only by being electrically connected with a mains supply according to a purchased instruction, so that the detailed description is omitted; the existing building steel cutter is found that the cutting blade is easy to passivate after being used for a long time, but the cutting blade is inconvenient to disassemble and replace, so that the use reliability of the cutting blade is poor; the placing height of the building steel cannot be conveniently adjusted according to the size of the building steel, so that the use limitation of the building steel is high; and the building steel is easy to rock when being cut, thereby leading to poor practicability.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a cutting blade which is convenient to disassemble and replace after being used and passivated for a long time, thereby improving the use reliability; the placing height of the building steel can be conveniently adjusted according to the size of the building steel, so that the use limitation of the building steel is reduced; and the building steel is not easy to shake when cutting, thereby improving the practicability of the building steel cutter.

The utility model relates to a building steel cutter, which comprises a stand column, a bottom plate, a side plate, a first motor, a transmission column and a cutting blade, wherein the first motor is arranged on the right side of the stand column; the transmission column comprises a dismounting pipe and a dismounting column, the left end of the dismounting column is inserted into the right end of the dismounting pipe, the left end of the dismounting column is provided with a through hole, the top side of the dismounting pipe is communicated with a top limiting hole, the bottom side of the dismounting pipe is communicated with a bottom limiting hole, the dismounting column further comprises a bolt and a nut, the top end of the bolt is provided with a rotary lug, the bottom end of the bolt sequentially penetrates through the top limiting hole, the through hole and the bottom limiting hole and is inserted into and screwed into the nut, the left end of the dismounting pipe is connected with the right side output end of the first motor, and the right end of the dismounting column; the base is arranged at the top end of the bottom plate, the second motor is arranged at the top end of the base, one end of the transmission shaft is fixedly connected to the front-side output end of the second motor, the other end of the transmission shaft is rotatably connected with one end of the driving shaft, the other end of the driving shaft is rotatably connected with the driving block, and the driving block is arranged in the middle of the bottom end of the driving plate; still include two sets of fixed plates, fixed pipe and fixed column, two sets of fixed plates are installed respectively and are taken movable plate top left side and fixed column left end, the right-hand member of fixed column inserts inside the left end of fixed pipe, fixed socle end is provided with the layer board, the layer board is installed and is taken movable plate top right side, still include two sets of spacing slider and spacing spring, spacing spring is located fixed intraduct, spacing spring one end is connected with fixed intraductal right side wall, the spacing spring other end is connected with the right-hand member of fixed column, fixed tub of front side and rear side all are provided with the intercommunication groove, two sets of spacing slider one end is connected with the fixed column respectively, two sets of spacing slider other ends pass two sets of intercommunication grooves respectively and all stretch out to fixed tub of outside.

The utility model discloses a building steel cutterbar, the curb plate is including adjusting post and control tube, and inside the bottom of adjusting the post inserted to the control tube top, still included extrusion post, extrusion spring and lower extrusion post, goes up the extrusion post and installs in the bottom of adjusting the post, and the top and the last extrusion post of extrusion spring are connected, and the bottom and the lower extrusion post of extrusion spring are connected, and the inner bottom lateral wall at the control tube is installed to the lower extrusion post, and the top and the stand bottom of adjusting the post are connected, and the bottom plate top of control tube are connected.

The utility model discloses a building steel cutterbar, still include four groups and go up the connecting block, four group's cover springs, four group's flexible pipe and four group's lower connecting blocks, four group's top of going up the connecting block is installed respectively and is being taken movable plate bottom left front side, right front side, left rear side and right rear side, four group's cover spring's one end is connected with four group's last connecting block respectively, four group's cover spring's the other end is connected with four group's lower connecting block respectively, four group's flexible pipe's one end is connected with four group's last connecting block respectively, four group's flexible pipe's the other end is connected with four group's lower connecting block respectively.

The utility model discloses a building steel cutterbar still includes two sets of bradyseism frame, two sets of bradyseism piece, two sets of bradyseism springs and two sets of bradyseism boards, and the one end of two sets of bradyseism frames is installed respectively in stand right side top and below, and the other end of two sets of bradyseism frames is connected with two sets of bradyseism pieces respectively, and two sets of bradyseism spring one end are connected with two sets of bradyseism piece inboards respectively, and two sets of bradyseism spring other ends are connected with two sets of bradyseism boards respectively, and first motor clamps between two sets of bradyseism boards.

The utility model discloses a building steel cutterbar still includes two sets of buffer boards, two sets of buffer spring and two sets of buffer blocks, and two sets of buffer board bottoms are connected with bottom plate top left side and right side respectively, and two sets of buffer spring one end are connected with two sets of buffer board inboards respectively, and two sets of buffer spring other ends are connected with two sets of buffer blocks respectively, and the second motor clamps between two sets of buffer blocks.

The utility model discloses a building steel cutterbar still includes the protective sheath, is provided with the protection chamber in the protective sheath, and protective sheath left end intercommunication is provided with the protection mouth to be provided with fixed opening in protection mouth department, be provided with the rope-drawing in the fixed opening, cut the piece and insert to protection intracavity portion, and the protective sheath passes through the rope-drawing and cuts piece relatively fixed.

The utility model discloses a building steel cutterbar, the two sets of regulation post outsides all are provided with the assembly pulley, and just two sets of assembly pulleys paste the inside wall of tight two sets of control tubes respectively.

The utility model discloses a building steel cutterbar, two sets of fixed plate inboards all are provided with the skid resistant course.

Compared with the prior art, the beneficial effects of the utility model are that: the disassembly of the cutting piece can be carried out through the matching of the disassembly and assembly column and the disassembly and assembly pipe, when in disassembly, a bolt only needs to be manually screwed out from the upper part through the screwing lug, the bottom end of the bolt is drilled out from the bottom limiting hole, the through hole and the top limiting hole in sequence, so that the disassembly and assembly column is convenient to move transversely and disassemble, when in assembly, the bolt only needs to be manually screwed in from the lower part through the screwing lug, the bottom end of the bolt is drilled into the top limiting hole, the through hole and the bottom limiting hole in sequence and is screwed to a nut, the fixing effect is achieved, the side wall of the disassembly and assembly column is tightly attached to the side wall in the disassembly and assembly pipe, the disassembly and assembly pipe is convenient to shake randomly, the cutting piece; the transmission shaft can be driven to rotate through the second motor, so that the transmission shaft can pull the driving block on the driving shaft to longitudinally move, the driving plate can longitudinally move, the placing height of the building steel can be conveniently adjusted according to the size of the building steel, the use limitation of the building steel is reduced, the second motor is a common electric device in the market, and the building steel can be used after being bought and reused by being electrically connected according to a purchased instruction book, so that the details are not repeated; and can conveniently press from both sides the dress through two sets of fixed plates to building steel, be difficult for rocking during the cutting of building steel to improve its practicality, two sets of spacing sliders of manual slip drive the spacing spring of fixed column compression and make building steel take out, when needs building steel are fixed, can make two sets of fixed plates paste tightly fixedly under spacing spring's self elasticity.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged partial view of portion A of FIG. 1;

FIG. 3 is a schematic view of a protective sheath;

FIG. 4 is a schematic view of the connection of the fixing tube and the fixing post;

FIG. 5 is a schematic view of the structure of the detachable tube and detachable column connection;

in the drawings, the reference numbers: 1. a column; 2. a base plate; 3. a first motor; 4. cutting the slices; 5. disassembling the pipe; 6. disassembling and assembling the column; 7. a bolt; 8. a nut; 9. rotating the lug; 10. a base; 11. a second motor; 12. a drive shaft; 13. driving a shaft; 14. driving the block; 15. driving the plate; 16. a fixing plate; 17. a fixed tube; 18. fixing a column; 19. a support plate; 20. a limiting slide block; 21. a limiting spring; 22. a communicating groove; 23. an adjustment column; 24. an adjusting tube; 25. a compression spring; 26. a spring sleeve; 27. a cushioning frame; 28. a shock absorption block; 29. a cushioning plate; 30. a buffer plate; 31. a buffer block; 32. a protective sleeve; 33. fixing the through opening; 34. drawing the rope; 35. a pulley block; 36. and an anti-slip layer.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 5, the construction steel cutter of the present invention comprises a column 1, a bottom plate 2, a side plate, a first motor 3, a transmission column and a cutting blade 4, wherein the first motor 3 is installed on the right side of the column 1; the transmission column comprises a dismounting pipe 5 and a dismounting column 6, the left end of the dismounting column 6 is inserted into the right end of the dismounting pipe 5, the left end of the dismounting column 6 is provided with a through hole, the top side of the dismounting pipe 5 is communicated with a top limit hole, the bottom side of the dismounting pipe 5 is communicated with a bottom limit hole, the transmission column further comprises a bolt 7 and a nut 8, the top end of the bolt 7 is provided with a rotary lug 9, the bottom end of the bolt 7 sequentially penetrates through the top limit hole, the through hole and the bottom limit hole and is inserted into and screwed into the nut 8, the left end of the dismounting pipe 5 is connected with the right side output end of the first motor 3, and the right end of the dismounting; the automatic feeding device is characterized by further comprising a base 10, a second motor 11, a transmission shaft 12, a driving shaft 13, a driving block 14 and a driving plate 15, wherein the base 10 is installed at the top end of the bottom plate 2, the second motor 11 is installed at the top end of the base 10, one end of the transmission shaft 12 is fixedly connected to the output end of the front side of the second motor 11, the other end of the transmission shaft 12 is rotatably connected with one end of the driving shaft 13, the other end of the driving shaft 13 is rotatably connected with the driving block 14, and the driving block 14 is installed in the middle; the fixing device comprises a driving plate 15, two groups of fixing plates 16, a fixing pipe 17, a fixing column 18, a supporting plate 19, two groups of limiting sliders 20 and limiting springs 21, wherein the two groups of fixing plates 16 are respectively installed at the left end of the top end of the driving plate 15 and the left end of the fixing column 18, the right end of the fixing column 18 is inserted into the left end of the fixing pipe 17, the supporting plate 19 is arranged at the bottom end of the fixing pipe 17, the supporting plate 19 is installed at the right end of the top end of the driving plate 15, the limiting springs 21 are located inside the fixing pipe 17, one ends of the limiting springs 21 are connected with the inner right side wall of the fixing pipe 17, the other ends of the limiting springs 21 are connected with the right end of the fixing column 18, communicating grooves 22 are formed in the front side and the rear side of the fixing pipe 17, one ends of the two groups of limiting sliders 20; the disassembly of the cutting piece can be carried out through the matching of the disassembly and assembly column and the disassembly and assembly pipe, when in disassembly, a bolt only needs to be manually screwed out from the upper part through the screwing lug, the bottom end of the bolt is drilled out from the bottom limiting hole, the through hole and the top limiting hole in sequence, so that the disassembly and assembly column is convenient to move transversely and disassemble, when in assembly, the bolt only needs to be manually screwed in from the lower part through the screwing lug, the bottom end of the bolt is drilled into the top limiting hole, the through hole and the bottom limiting hole in sequence and is screwed to a nut, the fixing effect is achieved, the side wall of the disassembly and assembly column is tightly attached to the side wall in the disassembly and assembly pipe, the disassembly and assembly pipe is convenient to shake randomly, the cutting piece; the transmission shaft can be driven to rotate through the second motor, so that the transmission shaft can pull the driving block on the driving shaft to longitudinally move, the driving plate can longitudinally move, the placing height of the building steel can be conveniently adjusted according to the size of the building steel, the use limitation of the building steel is reduced, the second motor is a common electric device in the market, and the building steel can be used after being bought and reused by being electrically connected according to a purchased instruction book, so that the details are not repeated; and can conveniently press from both sides the dress through two sets of fixed plates to building steel, be difficult for rocking during the cutting of building steel to improve its practicality, two sets of spacing sliders of manual slip drive the spacing spring of fixed column compression and make building steel take out, when needs building steel are fixed, can make two sets of fixed plates paste tightly fixedly under spacing spring's self elasticity.

The utility model discloses a building steel cutter, the curb plate includes adjusting post 23 and regulating tube 24, the bottom of adjusting post 23 inserts to inside the 24 tops of regulating tube, still include upper squeeze post, extrusion spring 25 and lower squeeze post, upper squeeze post installs the bottom at adjusting post 23, the top and the upper squeeze post of extrusion spring 25 are connected, the bottom and the lower squeeze post of extrusion spring 25 are connected, lower squeeze post installs the inner bottom lateral wall at regulating tube 24, the top and the stand 1 bottom of adjusting post 23 are connected, the bottom and the 2 tops of bottom plate of regulating tube 24 are connected; it can make the cutting piece remove downwards through staff's extrusion stand, makes things convenient for the cutting piece can paste tightly all the time with building steel, improves and uses the reliability, and extrusion spring is enough to support first motor under the normal extension state and carries out work.

The utility model discloses a building steel cutter, still include four groups of connection blocks, four groups of cover springs 26, four groups of flexible pipes and four groups of lower connecting blocks, the top of four groups of connection blocks is installed respectively and is taken the left front side, right front side, left rear side and the right rear side of 15 bottoms of movable plate, four groups of cover springs 26's one end is connected with four groups of connection blocks respectively, four groups of cover springs 26's the other end is connected with four groups of lower connecting blocks respectively, four groups of flexible pipes's one end is connected with four groups of upper connecting blocks respectively, four groups of flexible pipes's the other end is connected with four groups of lower connecting blocks respectively, four groups of cover springs 26 are respectively nested in four groups of flexible pipes outsides, four; the four-group telescopic pipe can be conveniently adjusted and improve the supporting effect through four groups of sleeve springs, and the four groups of telescopic pipes assist the four groups of sleeve springs to be not easy to distort and deform.

The utility model discloses a building steel cutter, still include two sets of bradyseism frame 27, two sets of bradyseism piece 28, two sets of bradyseism springs and two sets of bradyseism boards 29, one end of two sets of bradyseism frame 27 is installed respectively above and below the right side of stand 1, the other end of two sets of bradyseism frame 27 is connected with two sets of bradyseism piece 28 respectively, two sets of bradyseism spring one end are connected with two sets of bradyseism piece 28 inboard respectively, two sets of bradyseism spring other ends are connected with two sets of bradyseism boards 29 respectively, first motor 3 clamps between two sets of bradyseism boards 29; it can be fixed first motor through two sets of bradyseism boards to extrude the bradyseism through two sets of bradyseism springs to first motor, improve its practicality, and put up the fixed effect of first motor improvement through two sets of bradyseism.

The utility model discloses a building steel cutter, still include two sets of buffer boards 30, two sets of buffer springs and two sets of buffer blocks 31, two sets of buffer boards 30 bottom are connected with bottom plate 2 top left side and right side respectively, two sets of buffer springs one end is connected with two sets of buffer boards 30 inboard respectively, two sets of buffer springs other end is connected with two sets of buffer blocks 31 respectively, second motor 11 clamps between two sets of buffer blocks 31; it can drive two sets of buffer blocks through two sets of buffer spring and rock the work of second motor and extrude the bradyseism, improves the practicality.

The utility model discloses a building steel cutter, still include protective sheath 32, be provided with the protection chamber in the protective sheath 32, the protective sheath 32 left end intercommunication is provided with the protection mouth, and is provided with fixed opening 33 in the protection mouth department, is provided with the drawstring 34 in the fixed opening 33, and cutting piece 4 inserts to the protection intracavity portion, and protective sheath 32 is relatively fixed with cutting piece 4 through drawstring 34; when its cutting piece was idle, can keep apart the cutting piece through the protective sheath, make it be difficult for causing the accidental injury to the staff, improve its use reliability, when the cutting piece need use, the accessible drawstring made things convenient for its manual dismouting, and it is more convenient to use.

In the utility model, the pulley blocks 35 are arranged outside the two groups of adjusting columns 23, and the two groups of pulley blocks 35 are respectively attached to the inner side walls of the two groups of adjusting pipes 24; it can improve the smoothness nature of adjusting longitudinal movement through the slip of assembly pulley to make the regulation post be difficult for rocking, vertical longitudinal movement.

The utility model relates to a building steel cutter, the inner sides of two groups of fixed plates 16 are provided with anti-skid layers 36; it can improve the fixed reliability through two sets of skid resistant layers.

The utility model discloses a building steel cutterbar, it is at the during operation, can carry out the dismantlement of cutting piece through the cooperation of dismouting post and dismouting pipe, only need to go out the bolt through the ear of revolving to manual top when dismantling, the bolt bottom drills out from bottom spacing hole, through-hole and top spacing hole in proper order, thereby make things convenient for the lateral shifting of dismouting post to dismantle, and only need to revolve the ear manual precession bolt downwards during the installation, the bolt bottom is in proper order from top spacing hole, the through-hole drills in and bottom spacing hole and screw dress to the nut, reach fixed effect can, dismouting post lateral wall pastes the intraductal lateral wall of dismouting, make things convenient for it not to rock at will, after making the cutting piece use passivation for a long time, it is comparatively convenient to dismantle and change, improve its use reliability; the transmission shaft can be driven to rotate through the second motor, so that the transmission shaft can pull the driving block on the driving shaft to longitudinally move, the driving plate can longitudinally move, the placing height of the building steel can be conveniently adjusted according to the size of the building steel, the use limitation of the building steel is reduced, the second motor is a common electric device in the market, and the building steel can be used after being bought and reused by being electrically connected according to a purchased instruction book, so that the details are not repeated; the building steel can be conveniently clamped through the two groups of fixed plates, the building steel is not easy to shake when being cut, so that the practicability of the building steel is improved, the two groups of limiting sliders are manually slid to drive the fixed columns to compress the limiting springs so that the building steel can be taken out, and when the building steel needs to be fixed, the two groups of fixed plates can be used for tightly adhering and fixing the building steel under the self elasticity of the limiting springs; the upright post can be extruded by workers to enable the cutting blade to move downwards, so that the cutting blade can be attached to the building steel all the time conveniently, the use reliability is improved, and the first motor can be supported to work under the normal extension state of the extrusion spring; the four groups of telescopic pipes assist the four groups of sleeve springs to be not easy to distort and deform; the first motor can be fixed through the two groups of shock absorption plates, and the first motor is extruded and cushioned through the two groups of shock absorption springs, so that the practicability of the motor is improved, and the fixing effect of the first motor is improved through the two groups of shock absorption frames; two groups of buffer blocks can be driven by two groups of buffer springs to extrude and buffer the working shake of the second motor, so that the practicability is improved; when the cutting blade is idle, the cutting blade can be isolated through the protective sleeve, so that the cutting blade is not easy to accidentally injure workers, the use reliability of the cutting blade is improved, when the cutting blade needs to be used, the cutting blade can be conveniently manually disassembled and assembled through the drawstring, and the cutting blade is more convenient to use; the smoothness of longitudinal movement can be improved through the sliding of the pulley block, and the adjusting column is not easy to shake and vertically moves; the fixing reliability can be improved by two sets of anti-slip layers.

The utility model discloses a building steel cutterbar, it is above the mounting means, the connected mode or the mode that sets up of all parts are common mechanical type, wherein slidable/rotate fixedly for not dropping off under the slip/rotation state, seal when sealed intercommunication is two connecting pieces intercommunications promptly, and concrete structure, model and the coefficient index of all its parts are its from taking the technique, as long as can reach all can implementing of its beneficial effect, the event is not adding the perusal more.

The construction steel cutter of the utility model, without being described to the contrary, the directional words included in the terms of "up, down, left, right, front, back, inner, and vertical and horizontal" and the like only represent the direction of the term in the normal use state, or be a trivial term understood by those skilled in the art, and should not be considered as limiting the term, at the same time, the numerical terms "first," "second," and "third," etc. do not denote any particular quantity or order, but rather are used to distinguish one from another, furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A building steel cutter comprises an upright post (1), a bottom plate (2), side plates, a first motor (3), a transmission post and a cutting blade (4), wherein the first motor (3) is arranged on the right side of the upright post (1); the transmission column is characterized by comprising a dismounting pipe (5) and a dismounting column (6), wherein the left end of the dismounting column (6) is inserted into the inside of the right end of the dismounting pipe (5), the left end of the dismounting column (6) is provided with a through hole, the top side of the dismounting pipe (5) is communicated with a top limiting hole, the bottom side of the dismounting pipe (5) is communicated with a bottom limiting hole, the transmission column further comprises a bolt (7) and a nut (8), the top end of the bolt (7) is provided with a rotary lug (9), the bottom end of the bolt (7) sequentially penetrates through the top limiting hole, the through hole and the bottom limiting hole and is inserted and screwed into the nut (8), the left end of the dismounting pipe (5) is connected with the right side output end of a first motor (3), and the right end of the dismounting column (6) is connected with a cutting; the automatic feeding device is characterized by further comprising a base (10), a second motor (11), a transmission shaft (12), a driving shaft (13), a driving block (14) and a driving plate (15), wherein the base (10) is installed at the top end of the bottom plate (2), the second motor (11) is installed at the top end of the base (10), one end of the transmission shaft (12) is fixedly connected to the output end of the front side of the second motor (11), the other end of the transmission shaft (12) is rotatably connected with one end of the driving shaft (13), the other end of the driving shaft (13) is rotatably connected with the driving block (14), and the driving block (14) is installed in the middle of the bottom end of the; the device is characterized by further comprising two groups of fixing plates (16), a fixing pipe (17) and a fixing column (18), wherein the two groups of fixing plates (16) are respectively installed at the left side of the top end of a driving plate (15) and the left end of the fixing column (18), the right end of the fixing column (18) is inserted into the left end of the fixing pipe (17), a supporting plate (19) is arranged at the bottom end of the fixing pipe (17), the supporting plate (19) is installed at the right side of the top end of the driving plate (15), the device further comprises two groups of limiting sliding blocks (20) and limiting springs (21), the limiting springs (21) are located inside the fixing pipe (17), one ends of the limiting springs (21) are connected with the inner right side wall of the fixing pipe (17), the other ends of the limiting springs (21) are connected with the right end of the fixing column (18), communicating grooves (22) are respectively formed in the front side and the rear side of the fixing pipe (17), one ends of the two groups of the limiting sliding blocks (20), the two groups of limiting sliding blocks (20) can respectively slide relative to the two groups of communicating grooves (22).

2. The building steel cutter according to claim 1, wherein the side plate comprises an adjusting post (23) and an adjusting tube (24), the bottom end of the adjusting post (23) is inserted into the inside of the top end of the adjusting tube (24), the side plate further comprises an upper squeeze post, a squeeze spring (25) and a lower squeeze post, the upper squeeze post is installed at the bottom end of the adjusting post (23), the top end of the squeeze spring (25) is connected with the upper squeeze post, the bottom end of the squeeze spring (25) is connected with the lower squeeze post, the lower squeeze post is installed on the inner bottom side wall of the adjusting tube (24), the top end of the adjusting post (23) is connected with the bottom end of the upright post (1), and the bottom end of the adjusting tube (24) is connected with the top end of the bottom plate (2).

3. The construction steel cutter according to claim 2, further comprising four sets of upper connecting blocks, four sets of wrap springs (26), four sets of telescopic tubes, and four sets of lower connecting blocks, wherein the top ends of the four sets of upper connecting blocks are respectively mounted on the left front side, the right front side, the left rear side, and the right rear side of the bottom end of the driving plate (15), one ends of the four sets of wrap springs (26) are respectively connected to the four sets of upper connecting blocks, the other ends of the four sets of wrap springs (26) are respectively connected to the four sets of lower connecting blocks, one ends of the four sets of telescopic tubes are respectively connected to the four sets of upper connecting blocks, the other ends of the four sets of telescopic tubes are respectively connected to the four sets of lower connecting blocks, the four sets of wrap springs (26) are respectively fitted to the outer.

4. A construction steel cutter as claimed in claim 3, further comprising two sets of shock absorption frames (27), two sets of shock absorption blocks (28), two sets of shock absorption springs and two sets of shock absorption plates (29), wherein one ends of the two sets of shock absorption frames (27) are respectively installed above and below the right side of the column (1), the other ends of the two sets of shock absorption frames (27) are respectively connected with the two sets of shock absorption blocks (28), one ends of the two sets of shock absorption springs are respectively connected with the inner sides of the two sets of shock absorption blocks (28), the other ends of the two sets of shock absorption springs are respectively connected with the two sets of shock absorption plates (29), and the first motor (3) is clamped between the two sets of shock absorption plates (29).

5. The construction steel cutter according to claim 4, further comprising two sets of buffer plates (30), two sets of buffer springs and two sets of buffer blocks (31), wherein the bottom ends of the two sets of buffer plates (30) are respectively connected to the left and right sides of the top end of the base plate (2), one ends of the two sets of buffer springs are respectively connected to the inner sides of the two sets of buffer plates (30), the other ends of the two sets of buffer springs are respectively connected to the two sets of buffer blocks (31), and the second motor (11) is clamped between the two sets of buffer blocks (31).

6. The building steel cutter as claimed in claim 5, further comprising a protective sleeve (32), wherein a protective cavity is arranged in the protective sleeve (32), the left end of the protective sleeve (32) is provided with a protective opening in a communicating manner, a fixing through opening (33) is arranged at the protective opening, a drawstring (34) is arranged in the fixing through opening (33), the cutting blade (4) is inserted into the protective cavity, and the protective sleeve (32) is fixed relative to the cutting blade (4) through the drawstring (34).

7. A construction steel cutter according to claim 6, wherein the two sets of adjustment posts (23) are provided with pulley blocks (35) on the outer side, and the two sets of pulley blocks (35) abut against the inner side walls of the two sets of adjustment tubes (24), respectively.

8. A construction steel cutter according to claim 7 in which the two sets of fixing plates (16) are provided with anti-slip layers (36) on the inner sides.