CN103801637A - Truss shearing mechanism of triangular truss production line - Google Patents
Truss shearing mechanism of triangular truss production line Download PDFInfo
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- CN103801637A CN103801637A CN201410055298.6A CN201410055298A CN103801637A CN 103801637 A CN103801637 A CN 103801637A CN 201410055298 A CN201410055298 A CN 201410055298A CN 103801637 A CN103801637 A CN 103801637A
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- 238000010008 shearing Methods 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 210000003205 muscle Anatomy 0.000 claims description 51
- 208000010727 head pressing Diseases 0.000 claims description 21
- 230000007547 defect Effects 0.000 abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 210000001015 abdomen Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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Abstract
The invention discloses a truss shearing mechanism of a triangular truss production line. The truss shearing mechanism of the triangular truss production line structurally comprises an upper shearing device and a lower shearing device. According to the upper shearing device, two upper shearing arms are hinged to an upper hinged shaft, upper scissors are installed at the corresponding ends of the upper shearing arms, the other end of each upper shearing arm is hinged to a crankshaft driving mechanism, and the crankshaft driving mechanism drives the two upper shearing arms to shear an upper spiral rib. The lower shearing device comprises two lower shearing arms, wherein the lower shearing arms are hinged to a first lower hinged shaft and a second lower hinged shaft respectively, lower scissors are installed at the corresponding ends of the lower shearing arms, the other ends of the lower shearing arms are hinged to the two sides of the crankshaft driving mechanism, and the crankshaft driving mechanism drives the two lower shearing arms to shear a lower spiral rib. The truss shearing mechanism of the triangular truss production line has the advantages that power is low, impact on a power grid is low, the structure is simple, and the cost is low; the phenomenon that the two pairs of scissors collide with each other is avoided, the service life is long, and the quality of a sheared truss is improved; a cut of the lower spiral rib is flat after the lower spiral rib is sheared, and the phenomenon that due to the fact that the width of the inner side of the triangular truss becomes narrower, the defect of deformation of the triangular truss is avoided.
Description
Technical field
What the present invention relates to is triangular form truss production line, particularly be the truss cutting mechanism of triangular form truss production line.
Background technology
At present, the truss great majority of domestic production are that cross section is the triangular form truss of triangular form, and triangular form truss comprises: on one, revolve muscle, two backspin muscle and be separately fixed at two zigzag abdomen muscle that revolve muscle and two backspin muscle sides.In triangular form truss production line, cutting mechanism generally includes following three kinds of forms:
The first is that hydraulic levels directly pushes away cut mode, and its structure comprises: hydraulic cylinder, and hydraulic cylinder is fixed in frame, and the piston rod of hydraulic cylinder connects the movable tool rest that a movable blade is housed; The fixing tool rest that dead knife is housed is fixed in frame; Under the promotion of hydraulic cylinder, movable blade moves along the side of dead knife shears triangular form truss.The defect that hydraulic levels directly pushes away cut mode is: owing to one, movable blade being sheared to whole truss, crop place causes truss integral bending serious, affects truss linearity.
The second way is eccentric shoe swing shearing mode, its structure comprises: motor reducer, on motor reducer output shaft, the fixing eccentric shaft that cuts off, cuts off the hinged cutting by ejector pin of eccentric shaft end one end, cuts the end push rod other end and connects the movable tool rest that a movable blade is housed; What be positioned at movable tool rest one side is the fixing tool rest with dead knife, and fixing tool rest is fixed in frame, and under motor reducer drives, movable blade moves along the side of dead knife shears triangular form truss.The defect of eccentric shoe swing shearing mode is: owing to one, movable blade being sheared to whole truss, crop place causes truss integral bending serious, affects truss linearity; In addition, motor reducer is sheared intermittently start and stop electrical network is impacted greatly, and brake is fragile, and power of motor is large.
The third is hydraulic shearing type, its structure comprises: adopt respectively two shear arms of the mirror image symmetry that structure is identical to be hinged on a jointed shaft simultaneously, scissors is equipped with respectively in one end two shear arm the same sides, connect at two shear arm other ends on the double piston-rod of a double-piston way moving hydraulic cylinder simultaneously, the piston rod of hydraulic cylinder drives two shear arms to rotate around a jointed shaft simultaneously, makes one end scissor cut triangular form truss of two shear arms.The defect of hydraulic shearing type is: first, relatively move and shear truss simultaneously with corresponding scissors on two shear arm one end, cause distance between two abdomen muscle of triangular form truss to dwindle, i.e. narrowed width inside triangular form truss, causes the distortion of triangular form truss; Secondly, scissors shape scissors triangular in shape on two shear arm one end, the wedge angle of two triangle scissors is relative, under the double piston-rod of hydraulic cylinder drives, two triangle scissors relatively move, when the wedge angle of two triangle scissors contacts, complete the shearing of triangular form truss, in shear history, frequently occur that the wedge angle of two scissors bumps against together, cause scissors damage.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned technology, a kind of two eccentric shafts that are provided with position symmetry on bent axle are provided, the shear arm of shear knife is housed respectively on described two eccentric shafts, the truss cutting mechanism of the triangular form truss production line that triangular form truss is sheared by hinged two one end of linking arm.
The technical scheme solving the problems of the technologies described above is:
A truss cutting mechanism for triangular form truss production line, described truss cutting mechanism comprises: upper jointed shaft is fixed in frame; Scissors is installed respectively in one end of two upper shear arm the same sides, and two upper scissors are positioned at the both sides of revolving muscle; Two upper shear arm other ends are hinged on respectively on the linking arm of crankshaft driving mechanism both sides, crankshaft driving mechanism drives both sides linking arms to stretch out simultaneously or bounce back and drives two upper shear arm other ends to swing around upper jointed shaft simultaneously, two upper scissors on upper shear arm one end is relatively moved in one of shearing and revolve muscle; Described down cut device comprises: two down cut arms of the identical mirror image symmetry of structure, and two down cut arms are hinged on respectively on first time jointed shaft and second time jointed shaft, and first time jointed shaft and second time jointed shaft are fixed in frame; Lower scissors is installed respectively in one end of two down cut arm the same sides, and two lower scissors lay respectively at the outside of two backspin muscle; Between two backspin muscle, be provided with a lower fixed cutting tool, lower fixed cutting tool is fixed in frame; Two down cut arm other ends are hinged on respectively on the linking arm of crankshaft driving mechanism both sides, crankshaft driving mechanism drives both sides linking arm to stretch out simultaneously or bounces back and drives two down cut arm other ends to swing around first time jointed shaft and second time jointed shaft respectively, makes two lower scissors shear separately respectively the backspin muscle between each lower scissors and lower fixed cutting tool.
Preferred version is: described crankshaft driving mechanism comprises: two the identical linking arms of bent axle, structure that connect with motor; Described crankshaft two end respectively hinged support with the fixing bearing block of frame on; On bent axle, have two eccentric shafts that structure is identical, two eccentric shafts are positioned at the symmetric position of crankshaft center axis both sides; Hinged linking arm one end that is positioned at bent axle both sides respectively on two eccentric shafts, two linking arm other ends connect respectively one end of movable joint screw rod, and the other end of two movable joint screw rods is the hinged upper shear arm other end or the down cut arm other end respectively.
Preferred version is: the structure that described two upper shear arms are installed scissors is identical, and its structure includes: upper scissors, be threaded two upper cutter head pressing plates in hole and the upper cutter head with two through holes; Upper scissors comprises blade and taper handle of a knife, taper handle of a knife both sides tapered side sliding fitting between two upper cutter head pressing plate tapered side that structure is identical respectively, and a side of the bottom surface contact upper cutter head of the taper handle of a knife between two upper cutter head pressing plates; Two upper cutter head pressing plate one end are fitted in respectively in the different groove on side of upper cutter head, and another side of upper cutter head is close on shear arm; After two upper scissors bolts run through respectively two through holes on two through holes and the upper cutter head on two upper shear arms, its end of thread screws in the screwed hole of two upper cutter head pressing plates, the taper handle of a knife of upper scissors is fixed and is stuck between two upper cutter head pressing plates, and upper scissors is fixed on two upper shear arms.
Preferred version is: the blade counterpoise of the upper scissors on described two on shear arm one end is combined on a shear line and shears and revolve muscle; The blade of two lower scissors is respectively along the lateral shear backspin muscle of lower fixed cutting tool.
The invention has the beneficial effects as follows: the present invention overcomes the defect of prior art, the crankshaft driving mechanism that a motor drives is equipped with respectively in the present invention on upper shear and down cut device, on bent axle, be provided with two eccentric shafts of position symmetry, two eccentric shafts are hinged with the upper shear arm of upper scissors with the down cut arm of lower scissors by linking arm, complete respectively and in shearing, revolve muscle and shear backspin muscle.
The present invention has swung in shearing and has revolved muscle and shearing backspin muscle with a motor driving crankshaft driving mechanism driving shear arm, has power little, little, simple in structure to electrical network impact, the advantage that cost is low; The present invention adopts two upper scissors blades counterpoises to be combined on a shear line and shears and revolve muscle, and shear history avoids two scissors to hit cutter phenomenon, increases the service life, and improves and shears truss quality; The blade of two lower scissors is respectively along the lateral shear backspin muscle of lower fixed cutting tool, and after shearing, backspin muscle otch is smooth, and shear effect is good; The present invention avoids narrowed width inside triangular form truss, causes the defect of triangular form truss distortion.
Accompanying drawing explanation
Fig. 1 is front view of the present invention;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is P portion enlarged drawing in Fig. 1;
Fig. 4 be in Fig. 3 B to enlarged drawing;
Fig. 5 is E-E cutaway view in Fig. 3;
Fig. 6 is the G-G cutaway view of Fig. 1;
Fig. 7 is that in Fig. 1, D, to view, shows in figure that two lower scissors shear respectively two lower edge muscle along lower fixed blade.
" the sequence number explanation in accompanying drawing "
1: bent axle; 1a: the first eccentric shaft; 1b: the second eccentric shaft; 2: frame; 2a: bearing block; 3a: the first linking arm; 3b: the second linking arm; 4: motor; 5: upper cutter head; 6: upper cutter head pressing plate; 7: upper scissors; 7a: taper handle of a knife; 7b: blade; 8a: shear arm on first; 8b: shear arm on second; 9a: the first down cut arm; 9b: the second down cut arm; 13: bearing pin; 14: upper scissors bolt; 15: upper jointed shaft; 17: movable joint screw rod; 18: locking nut; 22a: first time jointed shaft; 22b: second time jointed shaft; 24: lower scissors; 25: lower fixed blade; 30: muscle winds up; 31: triangular form truss; 32: lower edge muscle; 40: crankshaft driving mechanism; W: shear line.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Fig. 1 is front view of the present invention; Fig. 2 is that the A of Fig. 1 is to view; Fig. 3 is P portion enlarged drawing in Fig. 1; Fig. 4 be in Fig. 3 B to enlarged drawing; Fig. 5 is E-E cutaway view in Fig. 3; Fig. 6 is the G-G cutaway view of Fig. 1; Fig. 7 is that in Fig. 1, D, to view, shows in figure that two lower scissors shear respectively two lower edge muscle along lower fixed blade.
As shown in Figure 1, triangular form truss 31 comprises: on one, revolve muscle 30, two backspin muscle 32 and be separately fixed at the two zigzag abdomen muscle (not marking sequence number in figure) that revolve muscle 30 and two backspin muscle 32 sides.
The invention provides the truss cutting mechanism on a kind of triangular form truss production line, described truss cutting mechanism comprises: in shearing, revolve the upper shear of muscle 30, the down cut device of two backspin muscle 32 of shearing.
Described upper shear comprises: two upper shear arms of the mirror image symmetry that structure is identical, i.e. shear arm 8b on shear arm 8a and second on first, on first, on shear arm 8a and second, shear arm 8b is hinged on a upper jointed shaft 15 simultaneously, and upper jointed shaft 15 is fixed in frame 2; On first, on shear arm 8a and second, one end of shear arm 8b the same side is installed respectively the upper scissors 7 of 7, two, scissors and is positioned at the both sides of revolving muscle 30; On first, on shear arm 8a and second, the shear arm 8b other end is hinged on respectively on the linking arm of crankshaft driving mechanism 40 both sides, on the first linking arm 3a and the second linking arm 3b; Crankshaft driving mechanism 40 drives the first linking arm 3a of both sides and the second linking arm 3b to stretch out simultaneously or bounces back and drives on first the shear arm 8b other end on the shear arm 8a other end and second to swing around upper jointed shaft 15 simultaneously, makes on first on the upper scissors 7 and second on shear arm 8a one end the upper scissors 7 on shear arm 8b one end relatively move to shear one to revolve muscle 30.
Described down cut device comprises: two down cut arms of the identical mirror image symmetry of structure, i.e. the first down cut arm 9a and the second down cut arm 9b, the first down cut arm 9a and the second down cut arm 9b are hinged on respectively on first time jointed shaft 22a and second time jointed shaft 22b, and first time jointed shaft 22a and second time jointed shaft 22b are separately fixed in frame 2; 24, two lower scissors 24 of lower scissors are installed respectively and lay respectively at the outside of two backspin muscle 32 in one end of the first down cut arm 9a and second down cut arm 9b the same side; Between two backspin muscle 32, be provided with a lower fixed cutting tool 25, lower fixed cutting tool 25 is fixed in frame 2; The first down cut arm 9a and the second down cut arm 9b other end are hinged on respectively on the first linking arm 3a and the second linking arm 3b of crankshaft driving mechanism 40 both sides, crankshaft driving mechanism 40 drives the first linking arm 3a of both sides and the second linking arm 3b to stretch out simultaneously or bounces back and drives the other end of the first down cut arm 9a and the other end of the second down cut arm 9b to swing around first time jointed shaft 22a and second time jointed shaft 22b respectively, makes two lower scissors 24 shear separately respectively the backspin muscle 32 between each lower scissors 24 and lower fixed cutting tool 25.
As shown in Figure 1 and Figure 2, described upper shear with in down cut device, there is respectively the crankshaft driving mechanism 40 that structure is identical, its structure includes: identical the first linking arm 3a and the second linking arm 3b of bent axle 1, structure connecting with motor 4; Described bent axle 1 two ends respectively hinged support with the fixing bearing block 2a of frame 2 on; On bent axle 1, there are two eccentric shafts that structure is identical, i.e. the first eccentric shaft 1a and the second eccentric shaft 1b, the first eccentric shaft 1a and the second eccentric shaft 1b are positioned at the symmetric position of bent axle 1 central axis both sides; Hinged first linking arm 3a one end and second linking arm 3b one end that is positioned at bent axle 1 both sides respectively on the first eccentric shaft 1a and the second eccentric shaft 1b, the first linking arm 3a other end and the second linking arm 3b other end are fixedly connected with respectively one end of movable joint screw rod 17 by locking nut 18, the other end of two movable joint screw rods 17 is respectively by the shear arm 8b other end or the first down cut arm 9a other end and the second down cut arm 9b other end on the shear arm 8a other end and second on bearing pin 13 hinged first.
As shown in Fig. 1, Fig. 3 to Fig. 5, shear arm 8a is identical with the structure that shear arm 8b on second installs scissors 7 on described first, and its structure includes: upper scissors 7, be threaded two upper cutter head pressing plates 6 in hole and the upper cutter head 5 with two through holes; Upper scissors 7 comprises blade 7b and taper handle of a knife 7a, taper handle of a knife 7a both sides tapered side sliding fitting between two upper cutter head pressing plate 6 tapered side that structure is identical respectively, a side of the bottom surface contact upper cutter head 5 of the taper handle of a knife 7a between two upper cutter head pressing plates 6; Two upper cutter head pressing plate 6 one end are fitted in respectively in the different groove on 5 one sides of upper cutter head, and another side of upper cutter head 5 is close on first on shear arm 8a and second on shear arm 8b;
On first, on shear arm 8a, have two through holes, after two upper scissors bolts 14 run through respectively on first two through holes on two through holes and the upper cutter head 5 on shear arm 8a, its end of thread screws in the screwed hole of two upper cutter head pressing plates 6.
On second, on shear arm 8b, have two through holes, after two upper scissors bolts 14 run through respectively on second two through holes on two through holes and the upper cutter head 5 on shear arm 8b, its end of thread screws in the screwed hole of two upper cutter head pressing plates 6.
After above-mentioned two upper scissors bolts 14 are fastened in the groove on 5 one sides of upper cutter head by two upper cutter head pressing plates 6, the taper handle of a knife 7a of upper scissors 7 is fixed and is stuck between two upper cutter head pressing plates 6, and upper scissors 7 is separately fixed on first on shear arm 8a and second on shear arm 8b.
The blade 7b counterpoise of the upper scissors 7 on the blade 7b and second of the upper scissors 7 on described first on shear arm 8a one end on shear arm 8b one end is combined on a shear line W to be sheared and revolves muscle 30; The blade of two lower scissors 24 is respectively along the lateral shear backspin muscle 32 of lower fixed cutting tool 25.
Below the course of work is described:
The rear bent axle 1 of motor 4 energising that is arranged in the crankshaft driving mechanism 40 of shear rotates, drive respectively the first linking arm 3a and the second linking arm 3b stretch out simultaneously or bounce back, drive on first the shear arm 8b other end on the shear arm 8a other end and second to swing around upper jointed shaft 15, make on first on the upper scissors 7 and second on shear arm 8a one end the upper scissors 7 on shear arm 8b one end relatively move to shear one to revolve muscle 30 simultaneously; Bent axle 1 has turned around once to above revolving the shearing of muscle 30.
The rear bent axle 1 of motor 4 energising that is arranged in the crankshaft driving mechanism 40 of down cut device rotates, drive respectively the first linking arm 3a and the second linking arm 3b stretch out simultaneously or bounce back, drive the first down cut arm 9a other end and the second down cut arm 9b other end to swing around first time jointed shaft 22a and second time jointed shaft 22b respectively, make two lower scissors 24 shear separately respectively the backspin muscle 32 between each lower scissors 24 and lower fixed cutting tool 25; Bent axle 1 shearing to two backspin muscle 32 of having turned around.
Claims (4)
1. a truss cutting mechanism for triangular form truss production line, described truss cutting mechanism comprises: in shearing, revolves the upper shear of muscle (30), the down cut device of two backspin muscle of shearing (32), it is characterized in that,
Described upper shear comprises: two upper shear arms (8a, 8b) of the mirror image symmetry that structure is identical, and two upper shear arms (8a, 8b) are hinged on a upper jointed shaft (15) above simultaneously, and upper jointed shaft (15) is fixed in frame (2); Scissors (7) is installed respectively in one end of two upper shear arm (8a, 8b) the same sides, and two upper scissors (7) are positioned at the both sides of revolving muscle (30); Two upper shear arm (8a, 8b) other end is hinged on respectively the linking arm (3a of a crankshaft driving mechanism (40) both sides, 3b), crankshaft driving mechanism (40) drives both sides linking arm (3a, 3b) stretch out simultaneously or bounce back and drive two upper shear arm (8a, 8b) other end swings around upper jointed shaft (15) simultaneously, two upper scissors (7) on upper shear arm (8a, 8b) one end is relatively moved shear one to revolve muscle (30);
Described down cut device comprises: two down cut arm (9a of the identical mirror image symmetry of structure, 9b), two down cut arm (9a, 9b) be hinged on respectively first time jointed shaft (22a) and second time jointed shaft (22b) above, first time jointed shaft (22a) and second time jointed shaft (22b) are fixed in frame (2); Lower scissors (24) is installed respectively in one end of two down cut arms (9a, 9b) the same side, and two lower scissors (24) lay respectively at the outside of two backspin muscle (32); Between two backspin muscle (32), be provided with a lower fixed cutting tool (25), lower fixed cutting tool (25) is fixed in frame (2); Two down cut arm (9a, 9b) other end is hinged on respectively the linking arm (3a of a crankshaft driving mechanism (40) both sides, 3b), crankshaft driving mechanism (40) drives both sides linking arm (3a, 3b) stretch out simultaneously or bounce back drive two down cut arm (9a, 9b) other end swings around first time jointed shaft (22a) and second time jointed shaft (22b) respectively, makes two lower scissors (24) shear separately respectively the backspin muscle (32) being positioned between each lower scissors (24) and lower fixed cutting tool (25).
2. according to the truss cutting mechanism of the triangular form truss production line described in claim 1, it is characterized in that, described crankshaft driving mechanism (40) comprising: identical two linking arms (3a, 3b) of bent axle (1), structure that connect with motor (4); Described bent axle (1) two ends respectively hinged support with the fixing bearing block (2a) of frame (2) on; On bent axle (1), have two eccentric shafts (1a, 1b) that structure is identical, two eccentric shafts (1a, 1b) are positioned at the symmetric position of bent axle (1) central axis both sides; At two eccentric shaft (1a, hinged linking arm (the 3a that is positioned at bent axle (1) both sides respectively 1b), 3b) one end, two linking arm (3a, 3b) other end connects respectively one end of movable joint screw rod (17), the other end of two movable joint screw rods (17) is hinged upper shear arm (8a, the 8b) other end or down cut arm (9a, the 9b) other end respectively.
3. according to the truss cutting mechanism of the triangular form truss production line described in claim 1, it is characterized in that, described two upper shear arm (8a, 8b) install respectively the structure of scissors (7) identical, its structure includes: upper scissors (7), be threaded two upper cutter head pressing plates (6) in hole and the upper cutter head (5) with two through holes; Upper scissors (7) comprises blade (7b) and taper handle of a knife (7a), taper handle of a knife (7a) both sides tapered side sliding fitting between two upper cutter head pressing plates (6) tapered side that structure is identical respectively, be positioned at a side of the bottom surface contact upper cutter head (5) of the taper handle of a knife (7a) between two upper cutter head pressing plates (6); Two upper cutter head pressing plates (6) one end is fitted in respectively in the different groove on (5) sides of upper cutter head, and another side of upper cutter head (5) is close on shear arm (8a, 8b); Two upper scissors bolts (14) run through respectively two upper shear arm (8a, after two through holes on two through holes and upper cutter head (5) 8b), its end of thread screws in the screwed hole of two upper cutter head pressing plates (6), the taper handle of a knife (7a) of upper scissors (7) is fixed and is stuck between two upper cutter head pressing plates (6), upper scissors (7) is fixed on two upper shear arms (8a, 8b).
4. according to the truss cutting mechanism of the triangular form truss production line described in claim 1, it is characterized in that, blade (7b) counterpoise of the upper scissors (7) on described two on shear arm (8a, 8b) one end is combined on a shear line (W) to be sheared and revolves muscle (30); The blade of two lower scissors (24) is respectively along the lateral shear backspin muscle (32) of lower fixed cutting tool (25).
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| CN112620539A (en) * | 2020-12-18 | 2021-04-09 | 建科机械（天津）股份有限公司 | Truss footing cutting device |
| CN113441779A (en) * | 2021-06-23 | 2021-09-28 | 建科机械（天津）股份有限公司 | Truss down-shearing mechanism |
| CN115288477A (en) * | 2022-08-10 | 2022-11-04 | 徐州巴特工程机械股份有限公司 | House building forcible entry accessory |
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| CN112620539A (en) * | 2020-12-18 | 2021-04-09 | 建科机械（天津）股份有限公司 | Truss footing cutting device |
| WO2022127056A1 (en) * | 2020-12-18 | 2022-06-23 | 建科机械（天津）股份有限公司 | Truss footing cutting device |
| CN113441779A (en) * | 2021-06-23 | 2021-09-28 | 建科机械（天津）股份有限公司 | Truss down-shearing mechanism |
| CN115288477A (en) * | 2022-08-10 | 2022-11-04 | 徐州巴特工程机械股份有限公司 | House building forcible entry accessory |
| CN115288477B (en) * | 2022-08-10 | 2024-05-24 | 徐州巴特工程机械股份有限公司 | Broken accessory of tearing open of building construction |
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| CN103801637B (en) | 2015-11-18 |
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