CN112439851A - Truss welding steel bar shearing mechanism - Google Patents

Abstract

The invention discloses a shearing mechanism for truss-welded steel bars, which comprises a rack, an upper shearing mechanism and a lower shearing mechanism; the lower shearing mechanism for shearing the lower chord steel bar of the truss steel bar is arranged on the lower shearing fixing frame; the upper shearing mechanism for shearing the upper chord bars of the truss reinforcing steel bars is arranged on the upper shearing fixing frame, and the upper shearing fixing frame is connected with the lower shearing fixing frame through the height adjusting device; the upper shearing mechanism comprises a pair of upper shearing arms, the upper shearing arms are hinged to upper shearing arm shafts, one of the upper shearing arms and the upper shearing arm shafts are accommodated in the other upper shearing arm and the upper shearing arm shaft, the upper shearing arm shafts are fixed on the upper shearing fixing frame, the bottom ends of the upper shearing arms are connected with upper shearing movable blades, the upper shearing movable blades are symmetrically arranged, and the top ends of the upper shearing arms are hinged to a power mechanism. The truss welding steel bar shearing mechanism provided by the invention has the advantages of high shearing efficiency and high truss yield.

Description

Truss welding steel bar shearing mechanism

Technical Field

The invention relates to the field of truss steel bar production, in particular to a truss welding steel bar shearing mechanism.

Background

A truss, a group of members that form a triangle or a combination of several triangles in a specific manner, is generally formed by welding steel bars. The steel bar truss is made of steel bars as structural materials, and the steel bars are welded and cut into long sections and then handed over for use. The cross section of the steel bar truss is triangular, the whole steel bar truss comprises an upper chord rib positioned at an upper vertex angle and two lower chord ribs positioned at two bottom angles, two waists of the steel bar truss are two web ribs which are in wave-shaped bending, wave crests and wave troughs of the web ribs are respectively welded on the upper chord ribs and the lower chord ribs, and the steel bar truss is combined into a section of the whole steel bar truss.

The shearing device is matched with the truss production line and used for shearing the welded and formed long steel bar truss into the steel bar truss meeting the length specification, a hydraulic horizontal direct-pushing shearing mode, an eccentric sliding block swinging shearing mode and a hydraulic shearing mode are generally adopted for shearing in the truss production line, the integral bending of the truss cutting head is serious, the straightness of the truss is affected, meanwhile, the shears are easy to mutually impact, the shears are damaged, the service life is prolonged, the shearing efficiency is affected, and therefore the production efficiency of the truss is reduced.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.

In order to solve the defects of the prior art, the invention provides a truss welding steel bar shearing mechanism which comprises a rack, an upper shearing mechanism and a lower shearing mechanism, wherein the truss steel bar inlet end of the rack is a front section, the truss steel bar outlet end of the rack is a rear section, and walking rails are arranged on the side edges of two sides of the rack; the lower shearing mechanism for shearing the lower chord steel bar of the truss steel bar is arranged on the lower shearing fixing frame, the front end of the lower shearing fixing frame is provided with a walking driving mechanism, two sides of the lower shearing fixing frame are connected with a walking wheel fixing plate, the side wall of the walking wheel fixing plate is provided with at least one roller, and the roller is positioned on the walking track and can move along the walking track;

the upper shearing mechanism for shearing the upper chord bars of the truss reinforcing steel bars is arranged on an upper shearing fixing frame, the upper shearing fixing frame is connected with a lower shearing fixing frame through a height adjusting device, and the upper shearing fixing frame moves through the height adjusting device; the upper shearing mechanism comprises a pair of upper shearing arms, the upper shearing arms are hinged to upper shearing arm shafts, one of the upper shearing arms and the upper shearing arm shafts are accommodated in the other upper shearing arm and the upper shearing arm shaft, the upper shearing arm shafts are fixed on the upper shearing fixing frame, the bottom ends of the upper shearing arms are connected with upper shearing movable blades, the upper shearing movable blades are symmetrically arranged, and the top ends of the upper shearing arms are hinged to a power mechanism.

Furthermore, the power mechanism comprises a pair of upper shearing arm connecting rods, an upper shearing arm crankshaft and a first motor, one end of each upper shearing arm connecting rod is hinged to the top end of each upper shearing arm, the other end of each upper shearing arm connecting rod is fixed to the upper shearing arm crankshaft, connecting points of the upper shearing connecting rods and the upper shearing arm crankshaft are located on two sides of the central axis of the upper shearing crankshaft, the front end of each upper shearing arm crankshaft is fixed in a bearing on the front wall of the upper shearing fixing frame, and the rear end of each upper shearing arm crankshaft is in transmission connection with the first motor fixed to the rear wall of the upper shearing fixing frame.

Furthermore, the upper shearing movable blade is connected with the upper shearing arm through a fixing block, the fixing block is fixed on the upper shearing arm through a bolt, the upper shearing movable blade is a triangular cutter body, and one side of a sharp corner of the triangular cutter body is oppositely arranged and is positioned on two sides of the truss steel bar upper chord rib.

Furthermore, a notch is formed in the middle of the upper surface of the lower shearing fixing frame, a truss front supporting plate for supporting a truss is installed on the upper surface of the lower shearing fixing frame at the front end of the notch, and a truss rear supporting plate is installed on the upper surface of the lower shearing fixing frame at the rear end of the notch; truss guide blocks are arranged on the side edges of the two sides of the truss front support plate;

the lower shearing mechanism comprises a pair of lower shearing arms, a pair of lower shearing arm shafts, a pair of movable blades, fixed blades and a lower shearing arm crankshaft, wherein 2 lower shearing arms are axially and symmetrically distributed on a lower shearing fixing frame, 2 lower shearing arms are respectively hinged on the lower shearing arm shafts, the top ends of 2 lower shearing arms extend out of the notches, the fixed blades are installed at the rear end of a front supporting plate of the truss through fixed blade fixing seats, the fixed blades are positioned in the middles of 2 truss guide blocks, the movable blades are fixed at the top ends of the lower shearing arms, the movable blades protrude out of the top plane of the lower shearing fixing frame, the bottom ends of 2 lower shearing arms are respectively hinged with lower shearing arm connecting rods, the lower shearing arm connecting rods are connected with the lower shearing arm crankshaft, and the connecting points of the lower shearing connecting rods and the lower shearing arm crankshaft are positioned on two sides of the central axis of the lower shearing crankshaft, the front end of the lower shearing arm crankshaft is fixed in a bearing on the front wall of the lower shearing fixing frame, and the rear end of the lower shearing arm crankshaft is in transmission connection with an output shaft of a second motor fixed on the rear wall of the lower shearing fixing frame.

Furthermore, 2 the movable blades are arranged oppositely and are respectively positioned on the outer sides of the lower chord ribs of the truss steel bars, the fixed blade is positioned in the middle of the lower chord ribs of the truss steel bars, and any movable blade and the fixed blade are arranged in a staggered mode.

Further, the walking driving mechanism comprises a spiral lifter and a third motor, the spiral lifter is installed on a lifter installation plate, the lifter installation plate is installed between the side walls of the two sides of the support, a middle shaft of the spiral lifter is connected with an output shaft of the third motor, and a screw rod of the spiral lifter penetrates out of the lifter installation plate to be connected with a lifter connecting rod on the front wall of the lower shearing fixing frame.

Furthermore, a truss guide dust guard plate is mounted on the upper surface of the front end of the rack, a truss guide support plate is mounted on the upper surface of the truss guide dust guard plate, a truss guide plate extending along the movement direction of the truss is mounted on the upper surface of the truss guide support plate, and a truss guide cone is arranged at the front end of the truss guide plate.

Further, the height adjusting device comprises at least one upright post, a slidable guide sleeve penetrates through the upright post, the side wall of the guide sleeve is fixed on the upper shearing fixing frame, the bottom of the upright post is fixed on an upright post fixing block on the lower shearing fixing frame, the top of the upright post is in threaded fit connection with a screw shaft, the number of the screw shafts is consistent with that of the vertical shafts, the top of each screw shaft is fixed on the fixing frame through a screw shaft fixing block, the fixing frame is fixed on the upper shearing fixing frame, and the top of each screw shaft penetrates through the screw shaft fixing block to be in transmission connection with a fourth motor.

Furthermore, the number of the upright columns is 2, 2 upright columns are symmetrically distributed on two sides of the front part of the upper shearing fixing frame, the tops of the 2 upright columns are respectively in threaded connection with the screw shaft, chain wheels are mounted on the screw shaft, chains are wound on the 2 chain wheels, and the top end of one screw shaft is in transmission connection with the fourth motor; the back wall of the upper shearing fixing frame is provided with a pair of auxiliary stand columns, 2 auxiliary stand columns are respectively in one-to-one symmetry with the stand columns, the tops of the auxiliary stand columns are fixed on auxiliary stand column fixing blocks on the back wall of the upper shearing fixing frame, and the bottoms of the auxiliary stand columns are slidably arranged in auxiliary guide sleeves on the back wall of the lower shearing fixing frame in a penetrating mode.

Further, still install truss direction support frame on the upper shear mount antetheca, truss direction support frame bottom articulates at truss direction bracing piece's middle part, truss direction bracing piece's rear end is equipped with rotatable truss leading wheel, truss leading wheel surface ring is equipped with the annular, truss direction bracing piece's front end is connected with truss direction extension spring, truss direction extension spring top is connected with truss direction bolt at truss direction support frame front end.

The invention at least comprises the following beneficial effects: the truss welded steel bar shearing mechanism adopts an upper shearing mechanism and a lower shearing mechanism to respectively shear an upper chord rib and a lower chord rib of a truss, so that the deformation of the truss is avoided; the pair of upper shearing moving blades of the upper shearing mechanism are symmetrically arranged, so that the mutual collision of the upper shearing moving blades is effectively avoided, the service life of the upper shearing moving blades is prolonged, the shearing quality is ensured, and the shearing efficiency is improved; the hinged part of one upper shearing arm and the upper shearing arm shaft of the upper shearing mechanism is accommodated in the hinged part of the other upper shearing arm and the upper shearing arm shaft, so that the upper shearing arm shaft is more stable, the two upper shearing arms reach moment balance when rotating, and the service lives of the upper shearing arm shaft and the upper shearing arm are prolonged; due to the fact that the pitches of the web member ribs of the truss are different, the upper shearing mechanism and the lower shearing mechanism can integrally move along the walking track through the cooperation of the walking track, the roller and the walking driving mechanism, and the upper shearing mechanism can shear welding points of the upper chord ribs, so that truss shearing with different pitches is met, and the applicability of the shearing mechanism is enhanced; in addition, the upper shearing mechanism moves up and down through the height adjusting device, so that the height of the upper shearing mechanism is adjusted, the upper shearing mechanism is suitable for shearing truss upper chord ribs with different sizes, the application range is wide, and the applicability of the shearing mechanism is improved.

Drawings

Fig. 1 is a schematic structural diagram of a shear mechanism for a truss-welded steel bar according to the invention.

Fig. 2 is a schematic structural view of the upper shearing mechanism of the present invention.

Fig. 3 is a schematic view of the mounting structure of the upper shearing movable blade of the invention.

Fig. 4 is a schematic structural view of the lower shearing mechanism of the present invention.

Fig. 5 is a schematic view of the connection structure of the lower shear arm and the lower shear arm crankshaft of the present invention.

Fig. 6 is a schematic structural view of the travel drive mechanism of the present invention.

Fig. 7 is a schematic side view of the travel drive mechanism of the present invention.

Fig. 8 is a partial enlarged structural view of 001 in fig. 7 according to the present invention.

Reference numerals: 1-a frame, 2-a walking track, 3-a lower shear mount, 4-a walking wheel mount, 5-a roller, 6-an upper shear mount, 7-an upper shear arm, 8-an upper shear arm shaft, 9-an upper shear blade, 10-an upper shear arm link, 11-an upper shear arm crankshaft, 12-a first motor, 13-a fixed block, 14-a truss rear support plate, 15-a truss guide block, 16-a lower shear arm, 17-a lower shear arm shaft, 18-a movable blade, 19-a movable blade, 20-a lower shear arm crankshaft, 21-a fixed blade holder, 22-a lower shear arm link, 23-a second motor, 24-a spiral lifter, 25-a third motor, 26-a lifter mount plate, 27-a screw rod, 28-lifter connecting rod, 29-truss guide dust guard plate, 30-truss guide support plate, 31-truss guide plate, 32-truss guide cone, 33-upright post, 34-guide sleeve, 35-upright post fixing block, 36-screw shaft, 37-screw shaft fixing block, 38-fixing frame, 39-fourth motor, 40-chain wheel, 41-auxiliary upright post, 42-auxiliary upright post fixing block, 43-auxiliary guide sleeve, 44-truss guide support frame, 45-truss guide support rod, 46-truss guide wheel, 47-truss guide tension spring, 48-truss guide bolt and 49-truss front support plate.

Detailed Description

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

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

Fig. 1 to 8 show a truss welding steel bar shearing mechanism of the present invention, which includes a rack c1, an upper shearing mechanism and a lower shearing mechanism, wherein an entrance end of a truss steel bar of the rack c1 is a front section, an output end of the truss steel bar is a rear section, and two side edges of the rack c1 are provided with a traveling rail c 2; the lower shearing mechanism for shearing the truss steel bar lower chord bars is arranged on a lower shearing fixing frame c3, a walking driving mechanism is installed at the front end of the lower shearing fixing frame c3, two sides of the lower shearing fixing frame c3 are connected with a walking wheel fixing plate c4, at least one roller c5 is installed on the side wall of the walking wheel fixing plate c4, and the roller c5 is located on the walking track c2 and can move along the walking track c 2;

the upper shearing mechanism for shearing the truss steel bar upper chord bars is arranged on an upper shearing fixing frame c6, the upper shearing fixing frame c6 is connected with a lower shearing fixing frame c3 through a height adjusting device, and the upper shearing fixing frame c6 moves through the height adjusting device; the upper shearing mechanism comprises a pair of upper shearing arms c7, the upper shearing arms c7 are hinged to an upper shearing arm shaft c8, the hinged portion of one of the upper shearing arms c7 and the upper shearing arm shaft c8 is contained in the hinged portion of the other upper shearing arm c7 and the upper shearing arm shaft c8, the upper shearing arm shaft c8 is fixed on the upper shearing fixing frame c6, the bottom end of the upper shearing arm c7 is connected with an upper shearing movable blade c9, the upper shearing movable blades c9 are symmetrically arranged, and the top end of the upper shearing arm c7 is hinged to a power mechanism.

In the technical scheme, the truss welding steel bar shearing mechanism adopts an upper shearing mechanism and a lower shearing mechanism to respectively shear an upper chord bar and a lower chord bar of a truss, so that the deformation of the truss is avoided; the pair of upper shearing movable blades c9 of the upper shearing mechanism are symmetrically arranged, so that the mutual collision of the upper shearing movable blades c9 is effectively avoided, the service life of the upper shearing movable blade c9 is prolonged, the shearing quality is ensured, and the shearing efficiency is improved; the hinged part of one upper shearing arm c7 and the upper shearing arm shaft c8 of the upper shearing mechanism is accommodated in the hinged part of the other upper shearing arm c7 and the upper shearing arm shaft c8, so that the upper shearing arm shaft c8 is more stable, and the moment balance is achieved when the two upper shearing arms c7 rotate, which is beneficial to prolonging the service lives of the upper shearing arm shaft c8 and the upper shearing arm c 7; due to different pitches of web member ribs of the truss, the cooperation of the walking track c2, the roller c5 and the walking driving mechanism enables the upper shearing mechanism and the lower shearing mechanism to integrally move along the walking track c2, so that the upper shearing mechanism shears welding points of upper chord ribs, truss shearing with different pitches is met, and the applicability of the shearing mechanism is enhanced; in addition, the upper shearing mechanism moves up and down through the height adjusting device, so that the height of the upper shearing mechanism is adjusted, the upper shearing mechanism is suitable for shearing truss upper chord ribs with different sizes, the application range is wide, and the applicability of the shearing mechanism is improved.

The working principle is as follows: according to the requirements of truss shearing, the height of the upper shearing mechanism is adjusted through the height adjusting device, so that the upper shearing movable blades c9 of the upper shearing mechanism are positioned on two sides of the upper chord rib of the truss, the upper shearing mechanism and the lower shearing mechanism integrally move through the traveling driving mechanism, the upper shearing movable blades c9 of the upper shearing mechanism are positioned on two sides of the welding point of the upper chord rib of the truss, the truss steel bars are driven to move to the rack c1 through the peripheral feeding mechanism, the truss is sheared through the upper shearing mechanism and the lower shearing mechanism to manufacture a section of steel bar truss finished product, then the finished product is moved away through the peripheral conveying device, and then the next shearing cycle is carried out.

In another example, the power mechanism includes a pair of upper shearing arm connecting rods c10, an upper shearing arm crankshaft c11 and a first motor c12, one end of the upper shearing arm connecting rod c10 is hinged to the top end of the upper shearing arm c7, the other end of the upper shearing arm connecting rod c10 is fixed to the upper shearing arm crankshaft c11, the connection point of the upper shearing connecting rod c10 and the upper shearing arm crankshaft c11 is located on both sides of the central axis of the upper shearing crankshaft c11, the front end of the upper shearing arm crankshaft c11 is fixed in a bearing on the front wall of the upper shearing fixing frame c6, and the rear end of the upper shearing arm connecting rod c11 is in transmission connection with the first motor c12 fixed on the rear wall of the.

In the technical scheme, 2 upper shearing connecting rods c10 are centrosymmetric, a first motor c12 drives an upper shearing arm crankshaft c11 to rotate, so that two upper shearing arms c7 are driven by the upper shearing connecting rods c10 to simultaneously swing around an upper shearing arm shaft c8, an upper shearing movable blade c9 at the bottom end of the upper shearing arm c7 moves relatively to shear upper chord ribs of a truss, the first motor c12 drives an upper shearing arm crankshaft c11 to rotate reversely, the upper shearing movable blade c9 at the bottom end of the upper shearing arm c7 completes a shearing operation, and a shearing cycle operation of a next batch is performed under the action of an external truss feeding mechanism.

In another example, the upper shearing movable blade c9 is connected with the upper shearing arm c7 through a fixing block c13, the fixing block c13 is fixed on the upper shearing arm c7 through bolts, the upper shearing movable blade c9 is a triangular cutter body, and the side of the sharp corner of the triangular cutter body is arranged oppositely and is positioned on two sides of the upper chord rib of the truss steel bar. By adopting the scheme, the upper shearing movable blade c9 is arranged oppositely, so that the mutual collision of the two upper shearing movable blades c9 is avoided, the service life of the upper shearing movable blade c9 is obviously prolonged, and the upper shearing movable blade c9 can be replaced in time by detaching the fixing block after being worn.

In another example, a notch is formed in the middle position of the upper surface of the lower shear fixing frame c3, a truss front supporting plate c49 for supporting a truss is installed on the upper surface of the lower shear fixing frame c3 at the front end of the notch, and a truss rear supporting plate c14 is installed on the upper surface of the lower shear fixing frame c3 at the rear end of the notch; truss guide blocks c15 are arranged on the side edges of the two sides of the truss front support plate c 49;

the lower shearing mechanism comprises a pair of lower shearing arms c16, a pair of lower shearing arm shafts c17, a pair of movable blades c18, a fixed blade c19 and a lower shearing arm crankshaft c20, 2 lower shearing arm shafts c13 are symmetrically distributed on a lower shearing fixing frame c3, 2 lower shearing arms c16 are respectively hinged on the lower shearing arm shafts c17, the top ends of 2 lower shearing arms c16 extend out of the notches, the fixed blade c19 is mounted at the rear end of a truss front supporting plate c49 through a fixed blade fixing seat c21, the fixed blade c19 is positioned in the middle of 2 truss guide blocks c15, the movable blade c18 is fixed at the top end of the lower shearing arm c16, the movable blade c18 protrudes out of the top plane of the lower shearing fixing frame c3, the bottom ends of 2 lower shearing arms c16 are respectively hinged with lower shearing arm connecting rods c22, the lower shearing arm connecting rod c22 is connected with the lower shearing arm connecting point of the lower shearing arm shafts 22 c22, and the lower shearing arm connecting points 22 are positioned at two sides of the lower shearing arms c22, the front end of the lower shearing arm crankshaft c20 is fixed in a bearing on the front wall of the lower shearing fixing frame c3, and the rear end of the lower shearing arm crankshaft c20 is in transmission connection with an output shaft of a second motor c23 fixed on the rear wall of the lower shearing fixing frame c 3.

In the technical scheme, the truss rear support plate c14 and the truss front support plate c49 support truss steel bars, and the truss guide block c15 is arranged to facilitate the auxiliary truss to move under the driving of an external feeding mechanism, so that the truss is well guided, the deviation force in the left and right directions generated by the truss during shearing can be offset, and the shearing deformation can be prevented; the second motor c23 drives the lower shearing arm crankshaft c20 to rotate, so that the lower shearing connecting rod c22 drives the two lower shearing arms c16 to swing around the lower shearing arm shaft c17 simultaneously, the movable blades c18 of the two lower shearing arms c16 respectively approach the fixed blades c19 to the lower chord ribs of the shearing trusses respectively, the second motor c23 drives the lower shearing arm crankshaft c20 to rotate reversely, the movable blades c18 of the lower shearing arms c16 are separated to finish a shearing operation, and the shearing circulation operation of the next batch is performed under the action of the external truss feeding mechanism.

In another example, 2 of the movable blades c18 are oppositely arranged and respectively located at the outer sides of the lower chord of the truss steel bar, the fixed blade c19 is located at the middle of the lower chord of the truss steel bar, and any one of the movable blades c18 and the fixed blade c19 are arranged in a staggered manner. By adopting the scheme, the two movable blades c18 are staggered with the fixed blade c19, so that the cut of the sheared lower rotary rib is smooth, the deformation of the truss is avoided, and the shearing quality is ensured.

In another example, the walking driving mechanism comprises a spiral lifter c24 and a third motor c25, the spiral lifter c24 is mounted on a lifter mounting plate c26, the lifter mounting plate c26 is mounted between the side walls of the two sides of the bracket c1, the center shaft of the spiral lifter c24 is connected with the output shaft of the third motor c25, and the screw rod c27 of the spiral lifter c25 penetrates through the lifter mounting plate c26 to be connected with a lifter connecting rod c28 on the front wall of the lower shearing fixing frame c 3. By adopting the scheme, under the coordination of the traveling rail c2 and the roller c5, the third motor c25 drives the central shaft of the spiral lifter c24 to rotate, so that the screw rod c27 of the spiral lifter c25 drives the lower shearing fixing frame c3 to move.

In another example, a truss guide dust guard plate c29 is installed on the upper surface of the front end of the machine frame c1, a truss guide support plate c30 is installed on the upper surface of the truss guide dust guard plate c29, a truss guide plate c31 extending along the movement direction of the truss is installed on the upper surface of the truss guide support plate c30, and a truss guide cone c32 is arranged at the front end of the truss guide plate c 31. By adopting the scheme, the truss guide cone c32 and the truss guide plate c31 cooperate together to guide the truss, and the truss guide cone c32 and the truss guide plate c31 are positioned in the middle of the lower chord bars on the two sides of the truss.

In another example, the height adjusting device includes at least one upright c33, a slidable guide sleeve c34 is inserted through the upright c33, the side wall of the guide sleeve c34 is fixed on the upper shear fixing frame c6, the bottom of the upright c33 is fixed on an upright fixing block c35 on the lower shear fixing frame c3, the top of the upright fixing block c 3538 is in threaded fit with a screw shaft c36, the number of the screw shafts c36 is equal to the number of the upright shafts of the c33, the top of the screw shaft c36 is fixed on the fixing frame c38 through a screw shaft fixing block c37, the fixing frame c38 is fixed on the upper shear fixing frame c6, and the top of the screw shaft c37 penetrates through the screw fixing block c37 to be in transmission connection with a fourth motor c 39.

In the technical scheme, the fourth motor c39 drives the screw shaft c37 to rotate, and the screw shaft c36 is in threaded fit with the upright c33, so that the screw shaft c36 moves up and down in the upright c33, and the upper shearing fixing frame c6 moves up and down integrally under the fit of the guide sleeve c34, so that the height of the upper shearing fixing frame c6 is adjusted, and the operation is simple and convenient.

In another example, the number of the upright posts c33 is 2, 2 upright posts c33 are symmetrically distributed on two sides of the front portion of the upper shear fixing frame c6, the tops of 2 upright posts c33 are respectively in threaded connection with the screw shaft c36, a chain wheel c40 is mounted on the screw shaft c36, a chain is wound on 2 chain wheels c40, and the top end of one screw shaft c36 is in transmission connection with the fourth motor c 39; the rear wall of the upper shearing fixing frame c6 is provided with a pair of auxiliary upright posts c41, 2 auxiliary upright posts c41 are respectively in one-to-one symmetry with the upright posts c33, the top of each auxiliary upright post c41 is fixed on an auxiliary upright post fixing block c42 on the rear wall of the upper shearing fixing frame c6, and the bottom of each auxiliary upright post c41 can be slidably arranged in an auxiliary guide sleeve c43 on the rear wall of the lower shearing fixing frame c3 in a penetrating manner.

In the technical scheme, the number of the upright columns c33 is 2, the fourth motor c39 drives the screw shaft c37 to rotate, the other screw shaft c36 synchronously rotates under the matching of the chain and the chain wheel c40, and due to the threaded matching of the screw shaft c36 and the upright column c33, as the screw shaft c36 moves up and down in the upright column c33, the upper shearing fixing frame c6 integrally moves up and down under the matching of the guide sleeve c34, and the auxiliary upright column c41 moves up and down in the auxiliary guide sleeve c43, when the upper shearing fixing frame c6 integrally moves, the auxiliary upright column c41 and the auxiliary guide sleeve c43 are arranged to avoid the shaking deviation of the upper shearing fixing frame c6, so that the height adjustment of the upper shearing fixing frame c6 is more accurate, and the upper shearing movable blades c9 are accurately positioned at two sides of the upper chord of the truss, which is beneficial to improving the shearing accuracy.

In another example, a truss guide support c44 is further mounted on the front wall of the upper shear fixing frame c6, the bottom end of the truss guide support c44 is hinged to the middle of the truss guide support c45, a rotatable truss guide wheel c46 is arranged at the rear end of the truss guide support c45, an annular groove is annularly arranged on the surface of the truss guide wheel c46, the front end of the truss guide support c45 is connected with a truss guide tension spring c47, and the top end of the truss guide tension spring c47 is connected with a truss guide bolt c48 at the front end of the truss guide support c 44. By adopting the scheme, the ring groove of the truss guide wheel c46 is pressed on the upper chord rib of the truss, the truss guide wheel c46 stably presses the truss while the auxiliary truss moves to realize the guide effect, and the truss is prevented from shifting, so that the shearing efficiency is improved, in addition, the arrangement of the truss guide tension spring c47 is favorable for overcoming the vibration generated during truss shearing, the shearing effect is further enhanced, and the yield of the truss is improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.

Furthermore, in the description of the present invention, the term "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

It should be noted that if the terms "first", "second", etc. are used in the description and claims of this application and in the above-described drawings, they are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, if the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Furthermore, in this application, the terms "mounted," "disposed," "provided," "connected," "sleeved," and the like should be construed broadly if they are referred to. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied and broadly described herein, it being recognized that the invention is not limited to the specific details and illustrations contained herein as shown and described, since various modifications and changes may be made therein by those skilled in the art without departing from the general concept defined by the appended claims and their equivalents.

Claims (10)

1. The truss welding steel bar shearing mechanism is characterized by comprising a rack (c1), an upper shearing mechanism and a lower shearing mechanism, wherein the truss steel bar inlet end of the rack (c1) is a front section, the truss steel bar outlet end is a rear section, and walking rails (c2) are installed on the side edges of two sides of the rack (c 1); the lower shearing mechanism for shearing the truss steel bar lower chord bars is arranged on a lower shearing fixing frame (c3), a walking driving mechanism is installed at the front end of the lower shearing fixing frame (c3), two sides of the lower shearing fixing frame (c3) are connected with a walking wheel fixing plate (c4), at least one roller (c5) is installed on the side wall of the walking wheel fixing plate (c4), and the roller (c5) is located on the walking track (c2) and can move along the walking track (c 2);

the upper shearing mechanism for shearing the truss steel bar upper chord bars is arranged on an upper shearing fixing frame (c6), the upper shearing fixing frame (c6) is connected with a lower shearing fixing frame (c3) through a height adjusting device, and the upper shearing fixing frame (c6) moves through the height adjusting device; the upper shearing mechanism comprises a pair of upper shearing arms (c7), the upper shearing arms (c7) are hinged to an upper shearing arm shaft (c8), the hinged portion of one of the upper shearing arms (c7) and the upper shearing arm shaft (c8) is contained in the hinged portion of the other upper shearing arm (c7) and the upper shearing arm shaft (c8), the upper shearing arm shaft (c8) is fixed on the upper shearing fixing frame (c6), the bottom end of the upper shearing arm (c7) is connected with an upper shearing movable blade (c9), the upper shearing movable blades (c9) are symmetrically arranged, and the top end of the upper shearing arm (c7) is hinged to a power mechanism.

2. The truss-type steel bar shearing mechanism as claimed in claim 1, wherein said actuating mechanism comprises a pair of upper shearing arm connecting rods (c10), an upper shearing arm crankshaft (c11) and a first motor (c12), one end of said upper shearing arm connecting rod (c10) is hinged to the top end of said upper shearing arm (c7), the other end of said upper shearing arm connecting rod is fixed on said upper shearing arm crankshaft (c11), the connecting point of said upper shearing connecting rod (c10) and said upper shearing arm crankshaft (c11) is located on both sides of the central axis of said upper shearing crankshaft (c11), the front end of said upper shearing arm crankshaft (c11) is fixed in the bearing on the front wall of said upper shearing fixing frame (c6), and the rear end thereof is in transmission connection with said first motor (c12) fixed on the rear wall of said upper shearing fixing frame (c 6).

3. The truss-welded steel bar shearing mechanism as recited in claim 2, wherein the upper shearing movable blade (c9) is connected with the upper shearing arm (c7) through a fixing block (c13), the fixing block (c13) is fixed on the upper shearing arm (c7) through a bolt, the upper shearing movable blade (c9) is a triangular cutter body, and one side of a sharp corner of the triangular cutter body is arranged oppositely and is positioned on two sides of the truss steel bar upper chord bar.

4. The truss welding steel bar shearing mechanism as recited in claim 1, wherein a notch is formed in the middle position of the upper surface of the lower shearing fixing frame (c3), a truss front supporting plate (c49) for supporting a truss is installed on the upper surface of the lower shearing fixing frame (c3) at the front end of the notch, and a truss rear supporting plate (c14) is installed on the upper surface of the lower shearing fixing frame (c3) at the rear end of the notch; truss guide blocks (c15) are mounted on the side edges of the two sides of the truss front support plate (c 49);

the lower shearing mechanism comprises a pair of lower shearing arms (c16), a pair of lower shearing arm shafts (c17), a pair of movable blades (c18), a fixed blade (c19) and a lower shearing arm crankshaft (c20), wherein 2 lower shearing arm shafts (c13) are symmetrically distributed on a lower shearing fixing frame (c3), 2 lower shearing arms (c16) are respectively hinged on the lower shearing arm shafts (c17), the top ends of 2 lower shearing arms (c16) extend out of the notch, the fixed blade (c19) is installed at the rear end of a truss front supporting plate (c49) through a fixed blade fixing seat (c21), the fixed blade (c19) is positioned among 2 truss guide blocks (c15), the movable blade (c18) is fixed at the top end of the lower shearing arm (c16), the movable blade (c18) protrudes out of the top plane of the lower shearing fixing frame (c3), and the bottom ends of 2 lower shearing arms (c16 6) are respectively hinged with a lower shearing arm connecting rod (22), the lower shearing arm connecting rod (c22) is connected with the lower shearing arm crankshaft (c20), the connecting point of the lower shearing connecting rod (c22) and the lower shearing arm crankshaft (c20) is positioned at two sides of the central axis of the lower shearing crankshaft (c20), the front end of the lower shearing arm crankshaft (c20) is fixed in a bearing on the front wall of the lower shearing fixing frame (c3), and the rear end of the lower shearing arm crankshaft (c20) is in transmission connection with an output shaft of a second motor (c23) fixed on the rear wall of the lower shearing fixing frame (c 3).

5. The truss-welded steel bar shearing mechanism as claimed in claim 4, wherein 2 of the movable blades (c18) are oppositely arranged and respectively located at the outer side of the lower chord of the truss steel bar, the fixed blade (c19) is located at the middle of the lower chord of the truss steel bar, and any movable blade (c18) and the fixed blade (c19) are arranged in a staggered manner.

6. The truss welding steel bar shearing mechanism as recited in claim 1, wherein said walking driving mechanism comprises a spiral lifter (c24) and a third motor (c25), said spiral lifter (c24) is mounted on a lifter mounting plate (c26), said lifter mounting plate (c26) is mounted between two side walls of said bracket (c1), a central shaft of said spiral lifter (c24) is connected with an output shaft of said third motor (c25), a lead screw (c27) of said spiral lifter (c25) passes through said lifter mounting plate (c26) and is connected with a lifter connecting rod (c28) on a front wall of said lower shear fixing frame (c 3).

7. The truss welding steel bar shearing mechanism as recited in claim 1, wherein a truss guide dust guard (c29) is installed on the upper surface of the front end of the machine frame (c1), a truss guide support plate (c30) is installed on the upper surface of the truss guide dust guard (c29), a truss guide plate (c31) extending along the movement direction of the truss is installed on the upper surface of the truss guide support plate (c30), and a truss guide cone (c32) is arranged at the front end of the truss guide plate (c 31).

8. The truss reinforcement shear mechanism of claim 1, wherein the height adjustment device includes at least one upright (c33), a slidable guide sleeve (c34) penetrates through the upright post (c33), the side wall of the guide sleeve (c34) is fixed on the upper shearing fixing frame (c6), the bottom of the upright post (c33) is fixed on an upright post fixing block (c35) on the lower shearing fixing frame (c3), the top of the screw rod is connected with a screw rod shaft (c36) in a threaded fit mode, the number of the screw rod shafts (c36) is consistent with that of the (c33) vertical shafts, the top of the screw shaft (c36) is fixed on the fixed frame (c38) through a screw shaft fixed block (c37), the fixing frame (c38) is fixed on the upper shearing fixing frame (c6), and the top end of the screw shaft (c37) penetrates through the screw shaft fixing block (c37) to be in transmission connection with a fourth motor (c 39).

9. The truss welding steel bar shearing mechanism according to claim 8, wherein the number of the upright posts (c33) is 2, 2 upright posts (c33) are symmetrically distributed on two sides of the front part of the upper shearing fixing frame (c6), the tops of 2 upright posts (c33) are respectively in threaded connection with the screw shaft (c36), a chain wheel (c40) is mounted on the screw shaft (c36), a chain is wound on 2 chain wheels (c40), and the top end of one screw shaft (c36) is in transmission connection with the fourth motor (c 39); the rear wall of the upper shearing fixing frame (c6) is provided with a pair of auxiliary upright posts (c41), 2 auxiliary upright posts (c41) are respectively in one-to-one symmetry with the upright posts (c33), the top of each auxiliary upright post (c41) is fixed on an auxiliary upright post fixing block (c42) of the rear wall of the upper shearing fixing frame (c6), and the bottom of each auxiliary upright post (c41) can be slidably arranged in an auxiliary guide sleeve (c43) on the rear wall of the lower shearing fixing frame (c 3).

10. The truss welding steel bar shearing mechanism as claimed in claim 1, wherein a truss guide support frame (c44) is further mounted on the front wall of the upper shear fixing frame (c6), the bottom end of the truss guide support frame (c44) is hinged to the middle of the truss guide support bar (c45), a rotatable truss guide wheel (c46) is arranged at the rear end of the truss guide support bar (c45), a ring groove is annularly formed in the surface of the truss guide wheel (c46), the front end of the truss guide support bar (c45) is connected with a truss guide tension spring (c47), and the top end of the truss guide tension spring (c47) is connected with a truss guide bolt (c48) at the front end of the truss guide support frame (c 44).

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