CN111842562A

CN111842562A - Steel plate bending device for building steel structure with adjustable angle

Info

Publication number: CN111842562A
Application number: CN202010730501.0A
Authority: CN
Inventors: 刘立新
Original assignee: Fuzhou Gulou Tongzhan Technology Co ltd
Current assignee: Fuzhou Gulou Tongzhan Technology Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2020-10-30

Abstract

The invention discloses a steel plate bending device with an adjustable angle for a building steel structure, which comprises a machine body, a bending cavity extending forwards and backwards is arranged in the machine body, a clamping block is arranged in the top wall of the bending cavity, the clamping blocks are symmetrically provided with clamping screw rods which extend up and down, the clamping blocks are connected with the clamping screw rods through threads, one end of the clamping screw rod, which is far away from the clamping block, extends downwards into a bevel gear meshing cavity, the tail end of the clamping screw rod is fixedly provided with an execution bevel gear, the right wall of the bevel gear meshing cavity on the left side is provided with a linkage shaft extending left and right, one end of the linkage shaft extending into the bevel gear meshing cavity is fixedly provided with a linkage bevel gear, the angle change of the bending angle is realized by matching a lead screw slide block with a cylindrical cam structure and locking the bending angle by adopting a spline, and meanwhile, the angle change of an upper bending structure and a lower bending structure is realized synchronously by belt wheels.

Description

Steel plate bending device for building steel structure with adjustable angle

Technical Field

The invention relates to the technical field of building steel structures, in particular to an angle-adjustable steel plate bending device for a building steel structure.

Background

The building steel structure has high strength, light weight, and it is convenient to build, few man-hour and advantage such as heat-resisting, extensively apply to each trade, especially the factory building of manufacturing and the staff dormitory on building site, and when building steel structure building, the condition that will bend the steel sheet usually takes place, for this reason with the bender cost too high, the manual work is bent again the precision is not enough, and the angle of bending also probably needs the multiple, consequently need design one kind can adjust the bending device who bends the more economy of angle degree.

Disclosure of Invention

The invention aims to provide an angle-adjustable steel plate bending device for a building steel structure, which is used for overcoming the defects in the prior art.

The steel plate bending device comprises a machine body, a bending cavity extending forwards and backwards is arranged in the machine body, a clamping block is arranged in the top wall of the bending cavity, clamping screws extending up and down are symmetrically arranged on the left and right of the clamping block, the clamping block is connected with the clamping screws through threads, one end, far away from the clamping block, of each clamping screw extends downwards into a bevel gear meshing cavity, an execution bevel gear is fixedly arranged at the tail end of each clamping screw, a linkage shaft extending left and right is arranged on the right wall of the bevel gear meshing cavity on the left side, one end, extending into the bevel gear meshing cavity, of each linkage shaft is fixedly provided with a linkage bevel gear, one end, far away from the linkage bevel gear, of each linkage shaft extends into the bevel gear meshing cavity on the right side, a linkage execution bevel gear meshing cavity meshed with the execution bevel gear is fixedly arranged at the tail end of each, a power bevel gear is fixedly arranged at one end of the power shaft extending into the bevel gear meshing cavity, a motor with an upward output shaft is fixedly arranged at one end of the power shaft far away from the power bevel gear, the linkage bevel gear is in meshing connection with the execution bevel gear and the power bevel gear, an upward execution cavity with an upward opening is arranged in the middle of the top wall of the clamping block, a limiting and adjusting device with a function of adjusting and limiting the bending angle by matching a lead screw slider with a convex block is arranged in the upper execution cavity, a power push rod extending up and down is fixedly arranged at the right side of the bottom wall of the clamping block, one end of the power push rod far away from the clamping block extends into the power cavity, a power slider capable of sliding up and down in the power cavity is fixedly arranged at the tail end of the power push rod, the power cavity is filled with hydraulic oil, an oil duct is communicated, the middle of the bottom wall of the lower execution cavity is communicated with an execution cavity, the oil duct is far away from one end of the power cavity is connected with the execution cavity, an execution sliding block which slides up and down is arranged in the execution cavity, an execution pushing rod is fixedly arranged on the top wall of the execution sliding block, the execution pushing rod is far away from one end of the execution sliding block stretches into the lower execution cavity, the tail end of the execution cavity is fixedly provided with a bending device, the bending device realizes the change of the bending angle and the function of locking the bending angle by adopting a spline through a screw rod and a cylinder-shaped cam structure, the limiting and adjusting device drives the power pushing rod to move downwards after rotating along with the clamping screw rod, the power pushing rod drives the power sliding block to move downwards to extrude hydraulic oil into the execution cavity to further drive the bending device to move upwards, and further realizes the function of. The three wall intercommunication is provided with the band pulley chamber around on the chamber of bending, be provided with in the band pulley intracavity and make restriction adjusting device with the synchronizer of the synchronous angle of adjustment of bending device, the chamber diapire front side of bending is provided with the length chamber, gliding length baffle around being provided with in the length chamber, the length baffle is kept away from one side of length chamber diapire stretches into in the chamber of bending, be provided with the length adjustment lead screw that extends about in the length baffle diapire, the length adjustment lead screw with the length baffle passes through threaded connection, the length adjustment lead screw is kept away from the one end of length baffle extends forward outside the fuselage.

On the basis of the technical scheme, the left wall of the upper execution cavity is provided with a butt joint cavity, an upper adjusting screw rod extending leftwards and rightwards is arranged in the upper execution cavity, two ends of the upper adjusting screw rod are symmetrically provided with upper sliding blocks, when the upper adjusting screw rod rotates, the moving directions of the two groups of upper sliding blocks are opposite, one end of the upper adjusting screw rod, which is far away from the upper sliding block, extends leftwards into the butt joint cavity, and the tail end of the upper adjusting screw rod is fixedly provided with an upper adjusting gear, the bottom wall of the upper execution cavity is communicated with a torsion spring cavity near the front, torsion springs are respectively and fixedly arranged on the left wall and the right wall of the torsion spring cavity, an upper adjusting shaft is fixedly arranged at one end of the torsion spring far away from the wall of the torsion spring cavity, an angle limiting block is fixedly arranged on the outer surface above the upper adjusting shaft and extends into the upper execution cavity, the angle stopper front side is provided with the angular displacement chamber, the fixed butt that is provided with of angle stopper back wall the lug of top shoe.

On the basis of the technical scheme, a bending block which can slide up and down is arranged in the lower execution cavity, the bottom wall of the bending block is fixedly connected with the execution push rod, a lower sliding cavity is arranged in the bending block, the left wall of the lower sliding cavity is communicated with a lower belt wheel cavity, the left wall of the lower belt wheel cavity is communicated with a limited compression spring cavity, a limited release cavity is communicated below the left wall of the lower execution cavity, a spline which extends left and right is arranged in the limited compression spring cavity, a limited reset block is fixedly arranged on the outer surface of the spline, one end of the spline, far away from the lower belt wheel cavity, extends out and is in spline connection with the bending block and is abutted against the left wall of the limited release cavity, a limited compression spring is fixedly arranged on the right wall of the limited compression spring cavity, one end of the limited compression spring, far away from the limited reset block, is fixed on the right, a limiting block is fixedly arranged at one end, close to the lower belt wheel cavity, of the spline, a rotating cavity is formed in the right wall of the limiting block, a bending screw rod extending leftwards and rightwards is arranged in the lower sliding cavity, one end of the bending screw rod extends into the rotating cavity, a lower belt wheel is fixedly arranged on the outer surface of the part, located in the lower belt wheel cavity, of the bending screw rod, a limiting cavity is formed in one side, close to the limiting block, of the lower belt wheel, the lower belt wheel and the limiting block can be in friction connection, a lower sliding block is arranged on one side, far away from the limiting block, of the lower belt wheel, the lower sliding block is in threaded connection with the bending screw rod, an angle execution block is fixedly arranged on the top wall of the lower sliding block, the same structures are symmetrically arranged in the right wall of the lower sliding cavity relative to the left wall, an angle rotating cavity with an upward opening is, the outer fixed bending angle block that is provided with of bending angle axle, bending angle block diapire is provided with the angle modulation slide, the angle execution block is kept away from the one end of lower slider stretches into angle rotation chamber and terminal butt on the angle modulation slide roof, work as lower slider removes the drive the angle execution block removes, the angle execution block removes and passes through the shape of angle modulation slide causes bending angle block winds bending angle axle rotates corresponding angle forward, execution chamber diapire bilateral symmetry is provided with the compression spring chamber down, the fixed compression spring that is provided with of compression spring chamber diapire, compression spring keeps away from the one end of compression spring chamber diapire is fixed on the bending block diapire.

On the basis of the technical scheme, an adjusting shaft extending leftwards and rightwards is arranged on the upper side of the left wall of the machine body, one end of the adjusting shaft extends out of the machine body, one end, far away from the left wall of the machine body, of the adjusting shaft penetrates through an upper adjusting cavity, an upper meshing gear is fixedly arranged on the outer surface of the adjusting shaft, a bottom wall of the upper adjusting cavity is communicated with a bending cavity, the bending cavity is butted with the butting cavity, the upper adjusting cavity is meshed with or separated from the upper adjusting gear, one end, far away from the upper meshing gear, of the adjusting shaft extends into a belt pulley cavity, an upper belt pulley is fixedly arranged at the tail end of the adjusting shaft, two groups of belt pulley shafts extending leftwards and rightwards are symmetrically arranged at the front and back of the belt pulley cavity, a middle belt pulley is fixedly arranged on the outer.

The invention has the beneficial effects that: the invention realizes the change of the bending angle by matching the lead screw slide block with the cylindrical cam structure, locks the bending angle by adopting the spline, and simultaneously realizes the angle change of the upper and lower groups of bending structures synchronously by the belt wheel.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an angle-adjustable steel plate bending device for a building steel structure according to the present invention;

FIG. 2 is a schematic view of the present invention taken along the line A-A of FIG. 1;

FIG. 3 is a schematic view of the present invention taken along the line B-B of FIG. 1;

FIG. 4 is a schematic view of the present invention taken along the line C-C of FIG. 1;

FIG. 5 is an enlarged view of the structure of the invention in the area D of FIG. 1;

FIG. 6 is an enlarged view of the structure of the region E in FIG. 1 according to the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Referring to fig. 1-6, the steel plate bending device capable of adjusting the angle for the building steel structure according to the embodiment of the invention comprises a machine body 1, a bending cavity 10 extending back and forth is arranged in the machine body 1, a clamping block 11 is arranged in the top wall of the bending cavity 10, clamping screws 9 extending up and down are symmetrically arranged on the left side and the right side of the clamping block 11, the clamping block 11 is connected with the clamping screws 9 through threads, one end of the clamping screw 9, far away from the clamping block 11, extends downwards into a bevel gear meshing cavity 7, the tail end of the clamping screw is fixedly provided with an execution bevel gear 8, a linkage shaft 2 extending left and right is arranged on the right wall of the bevel gear meshing cavity 7 on the left side, one end of the linkage shaft 2, far away from the linkage bevel gear 3, extends into the bevel gear meshing cavity 7 on the right side, and the tail end of the linkage execution bevel gear 8 is fixedly provided with linkage A power shaft 5 extending up and down is arranged on the bottom wall of the bevel gear meshing cavity 7 on the left side, a power bevel gear 4 is fixedly arranged at one end of the power shaft 5 extending into the bevel gear meshing cavity 7, a motor 6 with an output shaft upward is fixedly arranged at one end of the power shaft 5 far away from the power bevel gear 4, the linkage bevel gear 3 is in meshed connection with the execution bevel gear 8 and the power bevel gear 4, an upward execution cavity 18 with an upward opening is arranged in the middle of the top wall of the clamping block 11, a limiting and adjusting device 901 with the function of adjusting and limiting the bending angle through a lead screw slider matched with a convex block is arranged in the upper execution cavity 18, a power push rod 22 extending up and down is fixedly arranged on the right side of the bottom wall of the clamping block 11, one end of the power push rod 22 far away from the clamping block 11 extends into the power cavity 24, and a power slider 23 capable of, the power cavity 24 is filled with hydraulic oil, the bottom wall of the power cavity 24 is communicated with an oil duct 25, a lower execution cavity 37 is communicated and arranged in the bottom wall of the bending cavity 10, an execution cavity 30 is communicated and arranged in the middle of the bottom wall of the lower execution cavity 37, one end of the oil duct 25, which is far away from the power cavity 24, is connected with the execution cavity 30, an execution slider 28 which slides up and down is arranged in the execution cavity 30, an execution push rod 29 is fixedly arranged on the top wall of the execution slider 28, one end of the execution push rod 29, which is far away from the execution slider 28, extends into the lower execution cavity 37, the tail end of the execution push rod is fixedly provided with a bending device 902, the bending device 902 realizes the change of the bending angle and the function of locking the bending angle by a spline by matching a lead screw slider with a cylindrical cam structure, the limiting and adjusting device 901 drives the, the power push rod 22 drives the power slide block 23 to move downwards to extrude hydraulic oil into the execution cavity 30 so as to drive the bending device 902 to move upwards, and therefore the function of bending is completed while the steel plate is clamped. The front wall and the rear wall of the bending cavity 10 are communicated with a belt wheel cavity 16, a synchronizing device 903 enabling the limiting and adjusting device 901 and the bending device 902 to adjust angles synchronously is arranged in the belt wheel cavity 16, a length cavity 32 is arranged on the front side of the bottom wall of the bending cavity 10, a length baffle 39 sliding front and back is arranged in the length cavity 32, one side, far away from the bottom wall of the length cavity 32, of the length baffle 39 extends into the bending cavity 10, a length adjusting lead screw 33 extending left and right is arranged in the bottom wall of the length baffle 39, the length adjusting lead screw 33 is connected with the length baffle 39 through threads, and one end, far away from the length baffle 39, of the length adjusting lead screw 33 extends forwards out of the machine body 1.

In addition, in an embodiment, the limiting and adjusting device 901 is described in detail, a butt joint cavity 65 is provided on the left wall of the upper execution cavity 18, an upper adjusting screw 20 extending left and right is provided in the upper execution cavity 18, upper sliders 42 are symmetrically provided at both ends of the upper adjusting screw 20, when the upper adjusting screw 20 rotates, the moving directions of the two sets of upper sliders 42 are opposite, one end of the upper adjusting screw 20, which is far away from the upper slider 42, extends left into the butt joint cavity 65 and the tail end is fixedly provided with an upper adjusting gear 15, a torsion spring cavity 64 is provided in communication with the bottom wall of the upper execution cavity 18 in the front direction, torsion springs 63 are respectively fixedly provided on the left and right walls of the torsion spring cavity 64, an upper adjusting shaft 62 is fixedly provided at one end of the torsion spring 63, which is far away from the wall of the torsion spring cavity 64, an angle limiting block 19 is fixedly provided on the outer surface above the upper adjusting shaft 62, the angle limiting block 19 is provided with an angle moving cavity 44 in the front side, and a lug 40 abutted against the upper sliding block 42 is fixedly arranged on the rear wall of the angle limiting block 19.

In addition, in an embodiment, the bending apparatus 902 is described in detail, a bending block 34 that slides up and down is disposed in the lower execution cavity 37, a bottom wall of the bending block 34 is fixedly connected with the execution push rod 29, a lower sliding cavity 67 is disposed in the bending block 34, a lower pulley cavity 47 is disposed in communication with a left wall of the lower sliding cavity 67, a compression limiting spring cavity 58 is disposed in communication with a left wall of the lower pulley cavity 47, a limitation releasing cavity 66 is disposed in communication with a lower portion of a left wall of the lower execution cavity 37, a spline 57 extending left and right is disposed in the limitation compressing spring cavity 58, a limitation reset block 56 is fixedly disposed on an outer surface of the spline 57, one end of the spline 57 far from the lower pulley cavity 47 extends out and is in spline connection with the bending block 34 and abuts against the left wall of the limitation releasing cavity 66, a limitation compression spring 55 is fixedly disposed on a right wall of the limitation reset block 56, one end of the compression limiting spring 55, which is far away from the return limiting block 56, is fixed on the right wall of the compression limiting spring cavity 58, one end of the spline 57, which is close to the lower pulley cavity 47, is fixedly provided with a limiting block 53, the right wall of the limiting block 53 is provided with a rotating cavity 54, a left-right extending bending screw 61 is arranged in the lower sliding cavity 67, one end of the bending screw 61 extends into the rotating cavity 54, a lower pulley 51 is fixedly arranged on the outer surface of the part of the bending screw 61, which is located in the lower pulley cavity 47, a limiting cavity 52 is arranged on one side of the lower pulley 51, which is close to the limiting block 53, the lower pulley 51 and the limiting block 53 can be in friction connection, a lower slider 35 is arranged on one side of the lower pulley 51, which is far away from the limiting block 53, the lower slider 35 is in threaded connection with the bending screw 61, and an angle, for increasing stability, the same structure is symmetrically arranged in the right wall of the lower sliding cavity 67 relative to the left wall, the top wall of the lower sliding cavity 67 is communicated with an angle rotating cavity 68 with an upward opening, a bending angle shaft 60 extending left and right is arranged in the angle rotating cavity 68, a bending angle block 38 is fixedly arranged on the outer surface of the bending angle shaft 60, an angle adjusting slide way 69 is arranged on the bottom wall of the bending angle block 38, one end, far away from the lower slide block 35, of the angle executing block 36 extends into the angle rotating cavity 68, the tail end of the angle executing block abuts against the top wall of the angle adjusting slide way 69, when the lower slide block 35 moves to drive the angle executing block 36 to move, the angle executing block 36 moves to enable the bending angle block 38 to rotate forwards by a corresponding angle around the bending angle shaft 60 through the shape of the angle adjusting slide way 69, and the compression spring cavities 26 are symmetrically arranged on the left and right bottom walls of the, a compression spring 27 is fixedly arranged on the bottom wall of the compression spring cavity 26, and one end of the compression spring 27 far away from the bottom wall of the compression spring cavity 26 is fixed on the bottom wall of the bending block 34.

In addition, in an embodiment, the synchronizing device 903 is described in detail, an adjusting shaft 12 extending left and right is disposed on an upper side of a left wall of the machine body 1, one end of the adjusting shaft 12 extends out of the machine body 1, one end of the adjusting shaft 12, which is far away from the left wall of the machine body 1, penetrates through an upper adjusting cavity 13 and is fixedly provided with an upper engaging gear 14 on an outer surface, a bottom wall of the upper adjusting cavity 13 is provided with a bending cavity 10 in a communicating manner and is capable of being abutted against the abutting cavity 65, the upper adjusting cavity 13 is engaged with or separated from the upper adjusting gear 15, one end of the adjusting shaft 12, which is far away from the upper engaging gear 14, extends into the pulley cavity 16 and is fixedly provided with an upper pulley 17 at a tail end, two sets of belt pulley shafts 41 extending left and right are symmetrically disposed at front and back of the pulley cavity 16, a middle pulley 50 is fixedly disposed on, The middle belt pulley 50 and the lower belt pulley 51 are in transmission connection through a belt 45.

In an initial state, the clamping block 11 is located at the top wall of the bending cavity 10, the bending device 902 is located at the bottom wall of the lower execution cavity 37, the compression spring 27 and the torsion spring 63 are in a no-load state, the lower slider 35 and the upper slider 42 are respectively located at two ends of the lower sliding cavity 67 and the upper execution cavity 18, the angle limiting block 19 and the bending angle block 38 are in a vertical state, the length baffle 39 is located at the rearmost part of the length cavity 32, the length baffle is prepared before bending, the length adjusting screw 33 is manually driven to rotate, the length adjusting screw 33 rotates to drive the length baffle 39 to move forwards, the position of the length baffle 39 is adjusted to limit the bending distance of the steel plate, then the adjusting shaft 12 is manually driven to rotate, the adjusting shaft 12 rotates to drive the upper meshing gear 14 to rotate, and the upper meshing gear 14 rotates to drive the upper adjusting gear 15 to rotate, the upper adjusting gear 15 rotates to drive the upper adjusting screw 20 to rotate, the upper adjusting screw 20 rotates to drive two sets of upper sliders 42 to approach each other, the upper sliders 42 drive the angle limiting block 19 to rotate forward by a certain angle around the upper adjusting shaft 62 according to the shape of the convex block 40, at this time, the torsion spring 63 continues to generate elastic potential energy, the adjusting shaft 12 rotates to drive the upper belt wheel 17 to rotate, the upper belt wheel 17 rotates to drive the middle belt wheel 50 and the lower belt wheel 51 to rotate through the belt 45, the lower belt wheel 51 rotates to drive the bending screw 61 to rotate, the bending screw 61 rotates to drive two sets of lower sliders 35 to approach each other, the lower slider 35 drives the angle executing block 36 to approach each other, the angle executing block 36 drives the bending angle block 38 to rotate forward around the bending angle shaft 60 by the same angle as the angle limiting block 19 according to the shape of the angle adjusting slide 69, after a steel plate is added from the rear opening of the bending cavity 10 and abuts against the length baffle 39, bending is started, the motor 6 rotates to drive the power shaft 5 to rotate, the power shaft 5 rotates to drive the power bevel gear 4 to rotate, the power bevel gear 4 rotates to drive the linkage bevel gear 3 to rotate, the linkage bevel gear 3 rotates to drive the linkage shaft 2 to rotate, the linkage shaft 2 rotates to drive the linkage execution bevel gear 31 to rotate, the linkage execution bevel gear 31 and the linkage bevel gear 3 rotate to drive the execution bevel gear 8 to rotate, the execution bevel gear 8 rotates to drive the clamping screw 9 to rotate, the clamping screw 9 rotates to drive the clamping block 11 to move downwards, the clamping block 11 moves downwards to drive the limiting adjusting device 901 to further compress the steel plate, and the upper adjusting gear 15 is separated from the upper engaging gear 14, meanwhile, the clamping block 11 moves downwards to drive the power push rod 22 to drive the power slide block 23 to move downwards, the power slide block 23 moves downwards to press hydraulic oil in the power cavity 24 into the execution cavity 30 through the oil passage 25 so as to cause the execution slide block 28 to move upwards, the execution slide block 28 drives the execution push rod 29 to move upwards, the execution push rod 29 moves upwards to drive the bending device 902 to move upwards, at this time, the compression spring 27 is pulled to accumulate elastic potential energy, the bending device 902 moves upwards so as to cause the spline 57 to contract inwards due to the limitation removing cavity 66, the spline 57 drives the limitation block 56 to contract inwards, so that the limitation compression spring 55 is compressed to accumulate elastic potential energy, the spline 57 drives the limitation block 53 to contract inwards, and then the limitation block is in friction connection with the lower belt wheel 51 to limit the rotation of the lower belt wheel 51, so that the bending angle is not changed during bending, further completing the bending effect, after the bending is completed, the motor 6 reversely rotates to drive the power shaft 5 to reversely rotate, the power shaft 5 reversely rotates to drive the power bevel gear 4 to reversely rotate, the power bevel gear 4 reversely rotates to drive the linkage bevel gear 3 to reversely rotate, the linkage bevel gear 3 reversely rotates to drive the linkage shaft 2 to reversely rotate, the linkage shaft 2 reversely rotates to drive the linkage execution bevel gear 31 to reversely rotate, the linkage execution bevel gear 31 and the linkage bevel gear 3 reversely rotate to drive the execution bevel gear 8 to reversely rotate, the execution bevel gear 8 reversely rotates to drive the clamping lead screw 9 to reversely rotate, the clamping lead screw 9 reversely rotates to drive the clamping block 11 to move upwards, the clamping block 11 moves upwards to drive the limiting adjusting device 901 to move upwards, further loosening the steel plate, the upper adjusting gear 15 is engaged with the upper engaging gear 14, and the clamping block 11 moves upwards to drive the power push rod 22 to drive the power slide block, the power slider 23 moves upwards to suck the hydraulic oil in the execution cavity 30 back to the power cavity 24 through the oil passage 25 so as to cause the execution slider 28 to move downwards, the execution slider 28 drives the execution push rod 29 to move downwards, the execution push rod 29 moves downwards to drive the bending device 902 to move downwards, meanwhile, the compression spring 27 releases elastic potential energy to help the bending device 902 to move downwards, the bending device 902 moves downwards to the bottom of the lower execution cavity 37 to release the displacement limitation of the spline 57, the limitation compression spring 55 releases elastic potential energy to drive the limitation reset block 56 to move outwards, the limitation reset block 56 drives the spline 57 to move outwards, the spline 57 drives the limitation block 53 to move outwards, the limitation block 53 is separated from the lower belt wheel 51 and contacts the lower belt wheel 51 to rotate and limit, and after the bending is finished, the length adjustment screw 33 is manually driven to rotate reversely, the length adjusting screw 33 reversely rotates to drive the length baffle 39 to move backwards and restore to the original position, then the adjusting shaft 12 is manually driven to reversely rotate, the adjusting shaft 12 reversely rotates to drive the upper meshing gear 14 to reversely rotate, the upper meshing gear 14 reversely rotates to drive the upper adjusting gear 15 to reversely rotate, the upper adjusting gear 15 reversely rotates to drive the upper adjusting screw 20 to reversely rotate, the upper adjusting screw 20 reversely rotates to drive two sets of upper sliders 42 to be separated from each other, the torsion spring 63 releases elastic potential energy to drive the angle limiting block 19 to reversely rotate around the upper adjusting shaft 62 to restore to the original position, the adjusting shaft 12 reversely rotates to drive the upper belt wheel 17 to reversely rotate, the upper belt wheel 17 reversely rotates to drive the middle belt wheel 50 and the lower belt wheel 51 to reversely rotate through the belt 45, the lower belt wheel 51 reversely rotates to drive the bending screw 61 to reversely rotate, and the bending screw 61 reversely rotates to drive, the lower slider 35 drives the angle execution block 36 to separate, and the angle execution block 36 drives the bending angle block 38 to reverse backwards around the bending angle shaft 60 to restore the original position according to the shape of the angle adjustment slide 69.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A steel plate bending device for an angle-adjustable building steel structure comprises a machine body, wherein a bending cavity extending forwards and backwards is arranged in the machine body, a clamping block is arranged in the top wall of the bending cavity, clamping screws extending upwards and downwards are symmetrically arranged on the left side and the right side of the clamping block, the clamping block and the clamping screws are connected through threads, one end, far away from the clamping block, of each clamping screw extends downwards into a bevel gear meshing cavity, an execution bevel gear is fixedly arranged at the tail end of each clamping screw, a linkage shaft extending leftwards and rightwards is arranged on the right wall of the bevel gear meshing cavity on the left side, a linkage bevel gear is fixedly arranged at one end, far away from the linkage bevel gear, of each linkage shaft extends into the right side of the bevel gear meshing cavity, a linkage execution bevel gear meshing with the execution bevel gear is fixedly arranged at the tail end of the, a power bevel gear is fixedly arranged at one end of the power shaft extending into the bevel gear meshing cavity, a motor with an upward output shaft is fixedly arranged at one end of the power shaft far away from the power bevel gear, the linkage bevel gear is in meshing connection with the execution bevel gear and the power bevel gear, an upward execution cavity with an upward opening is arranged in the middle of the top wall of the clamping block, a limiting and adjusting device with a function of adjusting and limiting the bending angle by matching a lead screw slider with a convex block is arranged in the upper execution cavity, a power push rod extending up and down is fixedly arranged at the right side of the bottom wall of the clamping block, one end of the power push rod far away from the clamping block extends into the power cavity, a power slider capable of sliding up and down in the power cavity is fixedly arranged at the tail end of the power push rod, the power cavity is filled with hydraulic oil, an oil duct is communicated, an execution cavity is communicated with the middle of the bottom wall of the lower execution cavity, one end of the oil duct, which is far away from the power cavity, is connected with the execution cavity, an execution sliding block which slides up and down is arranged in the execution cavity, an execution push rod is fixedly arranged on the top wall of the execution sliding block, one end of the execution push rod, which is far away from the execution sliding block, extends into the lower execution cavity, the tail end of the execution push rod is fixedly provided with a bending device, the bending device realizes the change of the bending angle and the function of locking the bending angle by adopting a spline by matching a lead screw and a cylindrical cam structure, the limiting and adjusting device drives the power push rod to move downwards after moving downwards along with the rotation of the clamping lead screw, the power push rod drives the power sliding block to move downwards to extrude hydraulic oil into the execution cavity so as to drive the bending device to move upwards, so as to realize the function of, the belt wheel cavity is internally provided with a synchronizer which enables the limiting and adjusting device and the bending device to adjust angles synchronously, a length cavity is arranged on the front side of the bottom wall of the bending cavity, a length baffle which slides forwards and backwards is arranged in the length cavity, one side, far away from the bottom wall of the length cavity, of the length baffle extends into the bending cavity, a length adjusting lead screw which extends leftwards and rightwards is arranged in the bottom wall of the length baffle, the length adjusting lead screw is connected with the length baffle through threads, and one end, far away from the length baffle, of the length adjusting lead screw extends forwards out of the machine body.

2. The steel plate bending device capable of adjusting the angle of the building steel structure according to claim 1, wherein: the left wall of the upper execution cavity is provided with a butt joint cavity, an upper adjusting screw rod extending left and right is arranged in the upper execution cavity, two ends of the upper adjusting screw rod are symmetrically provided with upper sliding blocks, when the upper adjusting screw rod rotates, the moving directions of the two groups of upper sliding blocks are opposite, one end of the upper adjusting screw rod, which is far away from the upper sliding block, extends leftwards into the butt joint cavity, and the tail end of the upper adjusting screw rod is fixedly provided with an upper adjusting gear, the bottom wall of the upper execution cavity is communicated with a torsion spring cavity near the front, torsion springs are respectively and fixedly arranged on the left wall and the right wall of the torsion spring cavity, an upper adjusting shaft is fixedly arranged at one end of the torsion spring far away from the wall of the torsion spring cavity, an angle limiting block is fixedly arranged on the outer surface above the upper adjusting shaft and extends into the upper execution cavity, the angle stopper front side is provided with the angular displacement chamber, the fixed butt that is provided with of angle stopper back wall the lug of top shoe.

3. The steel plate bending device capable of adjusting the angle of the building steel structure according to claim 1, wherein: a bending block which can slide up and down is arranged in the lower execution cavity, the bottom wall of the bending block is fixedly connected with the execution push rod, a lower sliding cavity is arranged in the bending block, the left wall of the lower sliding cavity is communicated with a lower belt wheel cavity, the left wall of the lower belt wheel cavity is communicated with a limited compression spring cavity, a limited releasing cavity is communicated below the left wall of the lower execution cavity, a spline which extends left and right is arranged in the limited compression spring cavity, a limited reset block is fixedly arranged on the outer surface of the spline, one end, away from the lower belt wheel cavity, of the spline extends out and is connected with the bending block in a spline mode and abutted against the left wall of the limited releasing cavity, a limited compression spring is fixedly arranged on the right wall of the limited compression spring cavity, one end, away from the limited reset block, of the limited compression spring is fixed on the right wall of the limited compression spring cavity, and one end, close to the lower belt, the right wall of the limiting block is provided with a rotating cavity, a bending lead screw extending leftwards and rightwards is arranged in the lower sliding cavity, one end of the bending lead screw extends into the rotating cavity, a lower belt wheel is fixedly arranged on the outer surface of the part of the bending lead screw located in the lower belt wheel cavity, a limiting cavity is arranged on one side of the lower belt wheel close to the limiting block, the lower belt wheel and the limiting block can be in friction connection, a lower sliding block is arranged on one side of the lower belt wheel far away from the limiting block, the lower sliding block is in threaded connection with the bending lead screw, an angle execution block is fixedly arranged on the top wall of the lower sliding block, the same structures are symmetrically arranged in the right wall of the lower sliding cavity relative to the left wall, the top wall of the lower sliding cavity is communicated with an angle rotating cavity with an upward opening, a bending angle shaft extending leftwards and rightwards is arranged in the angle, the angle piece diapire of turning over is provided with the angle modulation slide, the angle execution piece is kept away from the one end of lower slider stretches into angle rotation chamber and terminal butt on the angle modulation slide roof, work as the lower slider removes and drives the angle execution piece removes, the angle execution piece removes and passes through the shape of angle modulation slide causes the angle piece of turning over winds the corresponding angle of angle axial forward rotation of bending, it is provided with the compression spring chamber to carry out chamber diapire bilateral symmetry down, the fixed compression spring that is provided with of compression spring chamber diapire, compression spring keeps away from the one end of compression spring chamber diapire is fixed on the piece diapire of bending.

4. The steel plate bending device capable of adjusting the angle of the building steel structure according to claim 1, wherein: the utility model discloses a belt wheel assembly, including fuselage, adjusting shaft, last adjusting cavity, pulley chamber, belt wheel shaft, belt wheel, upper belt wheel, adjusting shaft one end, adjusting shaft keeps away from the one end of the left wall of fuselage runs through adjusting cavity and outer fixed surface and is provided with the meshing gear, go up adjusting cavity bottom wall intercommunication be provided with bend the chamber and with but butt joint chamber butt joint, go up adjusting cavity with go up adjusting gear meshing connection or separation, the adjusting shaft is kept away from the one end of going up the meshing gear stretches into belt wheel chamber and end are fixed and are provided with the belt wheel, the belt wheel chamber is located the department symmetry is provided with two sets of belt wheel axles that extend about around the belt wheel chamber, belt wheel axle.