Single chord anti-twist device and truss welded steel bar anti-twist device

Abstract

The present invention belongs to the technical field of steel bar trusses, and particularly relates to a single chord anti-twist device and a truss welded steel bar anti-twist device, comprising a vertically arranged upper anti-twist base plate, an upper double-hole bottom plate being vertically connected to the front side surface of the upper anti-twist base plate, a first extrusion mechanism and a second extrusion mechanism for preventing the chord from moving left and right are respectively movably penetrated on the upper double-hole bottom plate, a first knurled pressing wheel is movably connected to the lower end of the first extrusion mechanism, a second knurled pressing wheel is movably connected to the lower end of the second extrusion mechanism, the first knurled pressing wheel is arranged above the second knurled pressing wheel, a chord conveying channel for extruding the chord is formed between the first knurled pressing wheel and the second knurled pressing wheel, a group of wear-resistant wheels for guiding the chord are provided on the front side surface of the upper double-hole bottom plate; the product of the present invention eliminates the deflection and distortion during the straightening of the steel bars, so that after the truss is formed, the straightness of the truss meets the standard.

Description

Technical Field

[0001] The invention belongs to the technical field of steel bar trusses, and in particular relates to a single chord anti-twist device and a truss welded steel bar anti-twist device. Background Art

[0002] At present, the most common products on the steel truss production line are trusses with triangular cross-sections. However, during the production process of steel trusses, ordinary conveyor rollers cannot effectively limit the axial torsional deformation of the steel bars, which causes the triangular beam trusses produced to have different degrees of twisting deformation, thus affecting the quality accuracy of the steel truss products. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a single chord anti-twist device and a truss welded steel bar anti-twist device.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a single string reinforcement anti-twist device comprises an upper anti-twist base plate arranged vertically, an upper double-hole bottom plate is vertically connected to the front side of the upper anti-twist base plate, a first extrusion mechanism and a second extrusion mechanism for preventing the string reinforcement from moving left and right are respectively movably penetrated on the upper double-hole bottom plate, a first knurled pressure wheel is movably connected to the lower end of the first extrusion mechanism, and a second knurled pressure wheel is movably connected to the lower end of the second extrusion mechanism, the first knurled pressure wheel is arranged above the second knurled pressure wheel, a string reinforcement conveying channel for extruding the string reinforcement is formed between the first knurled pressure wheel and the second knurled pressure wheel, a group of wear-resistant wheels for guiding the string reinforcement are provided on the front side of the upper double-hole bottom plate, a string reinforcement through hole corresponding to the string reinforcement conveying channel is provided on the upper anti-twist base plate, a transmission mechanism for eliminating the distortion of the string reinforcement is provided at the upper ends of the first extrusion mechanism and the second extrusion mechanism, an adjustment mechanism for adjusting the first knurled pressure wheel and the second knurled pressure wheel is provided on the first extrusion mechanism, and an elastic mechanism is provided between the upper end of the second extrusion mechanism and the upper anti-twist base plate.

[0005] The beneficial effects of the present invention are as follows: the product of the present invention is located between the straightening mechanism and the bending mechanism during the actual truss production process; the single chord anti-twist device is used for anti-twist of a single steel bar; the steel bar first passes through the strip hole on the front plate, then passes through the chord through hole on the upper anti-twist base plate, and then passes through the first knurled pressing wheel and the second knurled pressing wheel to form a chord conveying channel for squeezing the chord bar; the steel bar is in an extruded state between the first knurled pressing wheel and the second knurled pressing wheel, and the first knurled pressing wheel and the second knurled pressing wheel achieve an anti-slip effect; finally, the steel bar passes through the channel formed between the two wear-resistant wheels; the first half gear and the second half gear rotate with each other, driving the first knurled pressing wheel and the second knurled pressing wheel to rotate left and right, eliminating the twisting of the steel bar; and at the same time, the first pressure screw is manually adjusted to adjust the deflection of the knurled pressing wheel to eliminate the deflection of the steel bar during adjustment;

[0006] Similarly, the truss welded steel bar anti-twisting device in the product of the present invention comprises an upper chord steel bar, two lower chord steel bars and two web bars welded to the upper chord steel bar and the lower chord steel bar respectively. The upper chord steel bar and the two lower chord steel bars are respectively located at the vertices of the triangle. The uppermost steel bar is the upper chord steel bar. The specific conveying and adjustment process of the upper chord steel bar has been described in the single chord steel bar anti-twisting device. The two lowermost steel bars are the lower chord steel bars. The principle process is the same as that of the upper steel bar. Specifically, the two lower chord steel bars pass through the two chord steel bar perforations on the front plate. Then, the two lower chord steel bars are firmly rolled between the third knurled pressing wheel and the fifth knurled pressing wheel, and between the fourth knurled pressing wheel and the fifth knurled pressing wheel, respectively, and finally pass through the wear-resistant sleeves respectively. At the same time, the spacing between the upper chord steel bar and the lower chord steel bar is adjusted by rotating the screw to adjust the height of the truss. The deflection of the knurled pressing wheel is adjusted by manually adjusting the second pressure screw to eliminate the deflection when the steel bar is straightened. After the truss is formed, the straightness of the truss meets the standard.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Further, the upper double-hole bottom plate is respectively provided with a first through hole and a second through hole, the first extrusion mechanism comprises a first pressing shaft sliding cylinder sleeve, the first pressing shaft sliding cylinder sleeve is inserted into the first through hole and is fixedly connected, a first sliding lower pressing shaft is slidably inserted into the first pressing shaft sliding cylinder sleeve, a first pressing wheel shaft is provided at the lower end of the first sliding lower pressing shaft, and the first knurled pressing wheel is provided at one end of the first pressing wheel shaft close to the second extrusion mechanism;

[0009] The second extrusion mechanism includes a second pressing shaft sliding cylinder sleeve, the second pressing shaft sliding cylinder sleeve is inserted into the second through hole and fixedly connected, a first sliding pressing shaft is slidingly inserted into the second pressing shaft sliding cylinder sleeve, a first dynamic pressing shaft block is provided at the lower end of the first sliding pressing shaft, the second knurled pressing wheel is arranged at an end of the first dynamic pressing shaft block close to the first pressing wheel shaft, the transmission mechanism is arranged between the first sliding lower pressing shaft and the upper end of the first sliding pressing shaft, the adjustment mechanism is arranged on the first pressing wheel shaft, and the elastic mechanism is arranged between the upper end of the first sliding pressing shaft and the upper anti-torsion base plate.

[0010] Further, the transmission mechanism includes a first half gear and a second half gear, the first half gear is arranged on the side of the upper end of the first sliding pressing shaft, and the second half gear is arranged on the side of the upper end of the first sliding pressing shaft, and the tooth groove surfaces of the first half gear and the second half gear are meshed with each other.

[0011] Further, the adjustment mechanism includes a first pull rod plate, one end of the first pull rod plate is arranged on the side of the first pressure wheel shaft away from the upper anti-torsion base plate, the upper end surface of the first pull rod plate is movably connected with a first square stud, the end of the first square stud away from the first pull rod plate is provided with a first external threaded sleeve, the internal thread of the first external threaded sleeve is matched with a first pressure screw, the end of the first pressure screw away from the first external threaded sleeve is provided with a handwheel, the outer sleeve of the first pressure screw is provided with a first pressure screw seat, and the first pressure screw seat is movably connected to the end surface of the upper double-hole bottom plate.

[0012] Further, the elastic mechanism includes a rectangular screw rod, one end of which is arranged on the upper end of the first sliding and pressing shaft and is coaxially arranged, the outer movable sleeve of the rectangular screw rod is provided with a top pull plate, the outer sleeve of the rectangular screw rod is provided with a butterfly spring, and the butterfly spring is arranged above the top pull plate. The thread on the rectangular screw rod is matched with a nut to tighten the butterfly spring, and the upper end of the rectangular screw rod is provided with a handwheel.

[0013] The present invention also provides a truss welded steel bar anti-twist device, comprising a vertically arranged front plate and the above-mentioned single chord anti-twist device, the upper anti-twist base plate is arranged on the front side of the front plate and slides in the vertical direction, the front plate is provided with a vertically arranged strip hole corresponding to the chord through hole, the front plate is provided with a lifting motor bottom plate, the lifting motor bottom plate is arranged below the upper anti-twist base plate, a spiral lifter is provided on the lifting motor bottom plate, the upper end of the spiral lifter is connected to the lower end of the upper anti-twist base plate, the lifting motor bottom plate is provided with a front baffle extending upward at one end away from the front plate, and the front baffle is provided at one end away from the lifting motor bottom plate There is a lower suspension rib adjustment support plate, and the lower suspension rib adjustment support plate is provided with a third through hole, a fourth through hole and a fifth through hole arranged in a straight line, and the third through hole, the fourth through hole and the fifth through hole are respectively fixedly connected with a third pressure roller sleeve, a fourth pressure roller sleeve and a fifth pressure roller sleeve, and the third pressure roller sleeve, the fourth pressure roller sleeve and the fifth pressure roller sleeve are respectively movably penetrated with a second sliding and pressing shaft, a third sliding and pressing shaft and a fourth sliding and pressing shaft, a second dynamic pressure shaft block is provided at the upper end of the second sliding and pressing shaft, and a third dynamic pressure shaft block is provided at the upper end of the fourth sliding and pressing shaft, and the ends of the second dynamic pressure shaft block and the third dynamic pressure shaft block are respectively movably connected with a third knurled pressing wheel and a fourth knurled pressing wheel;

[0014] The upper end of the third sliding and calendering shaft is connected to the middle position of the top wheel shaft block, and the two ends of the top wheel shaft block are movably connected with the fifth knurled pressure wheel, and the third knurled pressure wheel and the fourth knurled pressure wheel are respectively arranged above the fifth knurled pressure wheel at the two ends of the top wheel shaft block, and the front plate is provided with two chord rib through holes, and the third half gear is symmetrically arranged on both sides of the lower end of the third sliding and calendering shaft, and the fourth half gear and the fifth half gear meshing with the third half gear are respectively arranged on one side of the lower end of the second sliding and calendering shaft and the fourth sliding and calendering shaft;

[0015] A bolted swing arm is provided on the side of the top wheel shaft block away from the front plate, a second square stud is movably connected to the lower side of the bolted swing arm, a second external square threaded sleeve is connected to the lower end of the second square stud, a second pressure screw is threadedly matched with one end of the second external square threaded sleeve away from the second square stud, a second pressure screw seat is provided outside the second pressure screw seat, the second pressure screw seat is movably connected to the upper end surface of the lower suspension rib adjustment support plate, and a hand wheel is provided at the end of the second pressure screw away from the second external threaded sleeve;

[0016] The first square screw rod and the second square screw rod are coaxially provided at the lower ends of the second sliding and pressing shaft and the fourth sliding and pressing shaft, respectively. The first square screw rod and the second square screw rod are sleeved with a long strip-shaped lifting base plate, and the first square screw rod and the second square screw rod are sleeved with springs respectively. The springs are arranged under the lifting base plate, and nuts for tightening the springs are provided on the first square screw rod and the second square screw rod. The two ends of the lower suspension rib adjustment support plate are respectively threadedly connected with lifting rods, and the lower ends of the lifting rods are respectively movably connected to the two ends of the lifting base plate, and the upper ends of the lifting rods are provided with hand wheels.

[0017] Furthermore, a downwardly extending inverted plate is provided on the front side of the lower suspension rib adjustment support plate, and two upwardly extending ladder plates are provided on the side of the inverted plate away from the lower suspension rib adjustment support plate, a hole plate is provided between the upper ends of the two ladder plates close to the side of the lower suspension rib adjustment support plate, the hole plate is provided with two through holes for the chord bars to pass through, and a wear-resistant sleeve corresponding to the through holes is provided on the side of the hole plate away from the lower suspension rib adjustment support plate.

[0018] Furthermore, downwardly extending screw base plates are respectively provided on both sides of the lower suspension rib adjustment support plate, dust ring seats are respectively provided on the upper ends of the screw base plates, and the lifting rods are respectively passed through the dust ring seats and the screw base plates and threadedly matched.

[0019] Furthermore, a small link plate is provided on one side of the lower suspension rib adjustment support plate close to the front plate, and one end of the front baffle plate away from the front plate is connected to the small link plate.

[0020] Furthermore, the spiral lifter includes a shell with a hollow structure, which is arranged on the lower end surface of the bottom plate of the lifting motor. A turbine and a worm are arranged in the shell. A transmission force-bearing screw is screwed at the center of the turbine. A lifting flange is vertically connected to the lower end of the front side surface of the upper anti-torsion base plate. The upper end of the screw is connected to the lifting flange. A bearing is provided between the turbine and the inner wall of the shell. The rotation of the worm drives the turbine to rotate. One end of the worm is connected to the output shaft of the motor. The motor is arranged on the lower end surface of the bottom plate of the lifting motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the product of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a single chord anti-twist device of the product of the present invention;

[0023] Figure 3 It is a front view of the product of the present invention;

[0024] Figure 4 It is a top view of the product of the present invention;

[0025] Figure 5 It is a partial schematic diagram of the product of the present invention.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] f1, upper anti-twist base plate, f2, upper double-hole bottom plate, f3, first knurled pressure wheel, f4, second knurled pressure wheel, f5, wear-resistant wheel, f6, chord rib through hole, f7, first pressure shaft sliding cylinder sleeve, f8, first sliding lower pressure shaft, f9, first pressure wheel shaft, f10, second pressure shaft sliding cylinder sleeve, f11, first sliding pressure shaft, f12, first dynamic pressure shaft block, f13, first half gear, f14, second half gear, f15, first tie rod plate, f16, first square stud, f17, first external square threaded sleeve, f1 8. The first pressure screw rod, f19. The first pressure screw rod seat, f20. The rectangular screw rod, f21. The top pull plate, f22. The butterfly spring, f23. The bottom plate of the lifting motor, f24. The front baffle, f25. The lower suspension rib adjustment support plate, f26. The third pressure shaft sliding cylinder sleeve, f27. The fourth pressure shaft sliding cylinder sleeve, f28. The fifth pressure shaft sliding cylinder sleeve, f29. The second sliding pressure shaft, f30. The third sliding pressure shaft, f31. The fourth sliding pressure shaft, f32. The second dynamic pressure shaft block, f34. The third knurled pressure wheel, f35. The first Four knurled pressure wheels, f36, top wheel shaft block, f37, fifth knurled pressure wheel, f38, chord rib perforation, f39, third half gear, f40, fourth half gear, f41, fifth half gear, f42, bolted swing arm, f43, second square stud, f44, second external square threaded sleeve, f45, second pressure screw, f46, second pressure screw seat, f47, first square screw, f48, second square screw, f49, lifting bottom plate, f50, lifting tooth rod, f51, inverted plate, f52, ladder plate, f5 3. To the orifice plate, f54, wear-resistant sleeve, f55, screw base plate, f56, small link plate, f57, lifting rod, f58, small link plate, f59, shell, f60, screw, f61, lifting flange, f62, motor, f63, supporting box beam, f64, upper rib side plate, f65, wear-resistant wheel frame mounting plate, f66, wear-resistant wheel support plate mounting plate, f67, wear-resistant wheel support plate, f68, square hole groove wheel, f69, sliding hole plate, f70, spiral lifter, f71 strip hole, f72, front plate. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] Example

[0031] like Figure 2 The single chord anti-twist device shown comprises an upper anti-twist base plate f1 arranged vertically, and an upper double-hole bottom plate f2 is vertically connected to the front side of the upper anti-twist base plate f1. Preferably, a sliding hole plate f69 is arranged in parallel on the front side of the upper anti-twist base plate f1, and sliding holes are arranged on both sides of the sliding hole plate f69, and the sliding hole plate f69 is connected to the front side of the upper anti-twist base plate f1 by bolts. The upper double-hole bottom plate f2 is vertically welded to the side of the lower end of the sliding hole plate f69, and the upper double-hole bottom plate f2 is respectively movably penetrated with a first extrusion mechanism and a second extrusion mechanism for preventing the chord from moving left and right. The first extrusion mechanism The lower end of the second extrusion mechanism is connected to the first knurled pressure wheel f3 through a pivot or hinge shaft, so that the first knurled pressure wheel f3 rotates around the axial direction, and the lower end of the second extrusion mechanism is connected to the second knurled pressure wheel f4 through a pivot or hinge shaft, so that the second knurled pressure wheel f4 rotates around the axial direction, the first knurled pressure wheel f3 is arranged above the second knurled pressure wheel f4, and a chord conveying channel for extruding the chord is formed between the first knurled pressure wheel f3 and the second knurled pressure wheel f4, and the first knurled pressure wheel f3 and the second knurled pressure wheel f4 effectively prevent the chord from slipping;

[0032] A group of wear-resistant wheels f5 for guiding the chord ribs are provided on the front side of the upper double-hole bottom plate f2. Specifically, a wear-resistant wheel frame mounting plate f65 extending vertically upward is welded to the front side of the upper double-hole bottom plate f2. A wear-resistant wheel support plate mounting plate f66 extending downward is connected to the front side of the wear-resistant wheel frame mounting plate f65 by bolts. Wear-resistant wheel support plates f67 are welded to both sides of the lower end of the wear-resistant wheel support plate mounting plate f66. The two wear-resistant wheel support plates f67 are rotatably connected to the wear-resistant wheels f5 through the wear-resistant wheel shaft, and the chord ribs are transported and guided between the two wear-resistant wheels f5.

[0033] like Figure 5 The upper anti-twist base plate f1 is provided with a chord through hole f6 corresponding to the chord conveying channel, the upper ends of the first extrusion mechanism and the second extrusion mechanism are provided with a transmission mechanism for eliminating the distortion of the chord, the first extrusion mechanism is provided with an adjustment mechanism for adjusting the first knurled pressure wheel f3 and the second knurled pressure wheel f4, and an elastic mechanism is provided between the upper end of the second extrusion mechanism and the upper anti-twist base plate f1.

[0034] like Figure 1 and Figure 5The upper double-hole bottom plate f2 is provided with a first through hole and a second through hole, respectively, the first extrusion mechanism comprises a first pressing shaft sliding cylinder sleeve f7, the first pressing shaft sliding cylinder sleeve f7 is penetrated in the first through hole and fixedly connected (such as welded on the upper double-hole bottom plate f2), a first sliding lower pressing shaft f8 is slidably penetrated in the first pressing shaft sliding cylinder sleeve f7, a first pressing wheel shaft f9 is provided at the lower end of the first sliding lower pressing shaft f8, and the first knurled pressing wheel f3 is arranged at one end of the first pressing wheel shaft f9 close to the second extrusion mechanism;

[0035] The second extrusion mechanism includes a second pressing shaft sliding cylinder sleeve f10, which is inserted into the second through hole and fixedly connected (such as welded on the upper double-hole bottom plate f2), and a first sliding pressing shaft f11 is slidably inserted into the second pressing shaft sliding cylinder sleeve f10, and a first dynamic pressing shaft block f12 is provided at the lower end of the first sliding pressing shaft f11, and the second knurled pressing wheel f4 is arranged at an end of the first dynamic pressing shaft block f12 close to the first pressing wheel shaft f9, the transmission mechanism is arranged between the first sliding lower pressing shaft f8 and the upper end of the first sliding pressing shaft f11, the adjustment mechanism is arranged on the first pressing wheel shaft f9, and the elastic mechanism is arranged between the upper end of the first sliding pressing shaft f11 and the upper anti-torsion base plate f1.

[0036] The transmission mechanism includes a first half gear f13 and a second half gear f14. The first half gear f13 is arranged on the side surface of the upper end of the first sliding pressing axis f8, and the second half gear f14 is arranged on the side surface of the upper end of the first sliding pressing axis f11. The tooth groove surfaces of the first half gear f13 and the second half gear f14 are meshed with each other, so that the first half gear f13 and the second half gear f14 drive the first knurled pressing wheel f3 and the second knurled pressing wheel f4 to rotate left and right during the mutual rotation, thereby eliminating the distortion of the steel bars.

[0037] The adjustment mechanism includes a first pull rod plate f15, one end of which is arranged on the side of the first pressure wheel shaft f9 away from the upper anti-twist base plate f1, the upper end surface of the first pull rod plate f15 is movably connected with a first square stud f16 through a pin shaft, a pivot or a hinge shaft, the end of the first square stud f16 away from the first pull rod plate f15 is welded to one end of a first external threaded sleeve f17, the first external threaded sleeve f17 is internally threaded with a first pressure screw f18, the end of the first pressure screw f18 away from the first external threaded sleeve f17 is provided with a handwheel, the outer sleeve of the first pressure screw f18 is provided with a first pressure screw seat f19, and the first pressure screw seat f19 is movably connected to the end surface of the upper double-hole bottom plate f2 through a pivot. Specifically, Figure 2As shown, upper rib side plates f64 extending vertically upward are welded on both sides of the upper double-hole bottom plate f2, and the first pressure screw seat f19 is connected to the upper rib side plate f64 by pivot rotation. At the same time, the first pressure screw f18 is manually adjusted to adjust the deflection of the knurled pressure wheel to eliminate the deflection during steel bar adjustment.

[0038] like Figure 2-4 The elastic mechanism shown includes a rectangular screw rod f20, one end of which is arranged on the upper end of the first sliding and pressing axis f11 and is coaxially arranged, the outer movable sleeve of the rectangular screw rod f20 is provided with a top pull plate f21, and the outer sleeve of the rectangular screw rod f20 is provided with a butterfly spring f22, and the butterfly spring f22 is arranged above the top pull plate f21. The rectangular screw rod f20 is threaded with a nut to tighten the butterfly spring f22, and the upper end of the rectangular screw rod f20 is provided with a handwheel, and the handwheel is shown in the accompanying drawings.

[0039] like Figure 1 The truss welded steel bar anti-twist device shown comprises a vertically arranged front plate f72 and the above-mentioned single chord anti-twist device, the upper anti-twist base plate f1 is arranged on the front side of the front plate f72 and slides along the vertical direction, specifically, the vertical side of the upper anti-twist base plate f1 is provided with a slide rail, and the front plate f72 is respectively provided with a slider that slides with the slide rail, and the prior art can realize that the upper anti-twist base plate f1 and the front plate f72 can slide relative to each other, the front plate f72 is provided with a vertically arranged strip hole f71 corresponding to the chord through hole f6, the front plate f72 is provided with a lifting motor bottom plate f23, and the lifting motor bottom plate f23 is arranged below the upper anti-twist base plate f1;

[0040] like Figure 3 As shown, a spiral lifter f70 is provided on the lifting motor bottom plate f23, and the upper end of the spiral lifter f70 is connected to the lower end of the upper anti-twist base plate f1. Specifically, the spiral lifter f70 includes a shell f59 with a hollow structure, and the shell f59 is arranged on the lower end surface of the lifting motor bottom plate f23. A turbine and a worm are arranged in the shell f59, and a transmission force-bearing screw f60 is screwed at the center of the turbine. A lifting flange f61 is vertically connected to the lower end of the front side surface of the upper anti-twist base plate f1, and the upper end of the screw f60 is connected to the lifting flange f61. A bearing is provided between the turbine and the inner wall of the shell f59, and the rotation of the worm drives the turbine to rotate. One end of the worm is connected to the output shaft of the motor f62, and the motor f62 is arranged on the lower end surface of the lifting motor bottom plate f23. The spiral lifter f70 is an existing product, and an electric push rod, a hydraulic cylinder or a cylinder, etc. can also be used.

[0041] The end of the lifting motor bottom plate f23 away from the front plate f72 is provided with a front baffle f24 extending upward, and the end of the front baffle f24 away from the lifting motor bottom plate f23 is provided with a lower suspension rib adjustment support plate f25, and the lower suspension rib adjustment support plate f25 is provided with a third through hole, a fourth through hole and a fifth through hole arranged in a straight line, and the third through hole, the fourth through hole and the fifth through hole are respectively fixed (welded) and connected with a third end shaft sliding cylinder sleeve f26, a fourth end shaft sliding cylinder sleeve f27 and a fifth end shaft sliding cylinder sleeve f28. The second pressing shaft f29, the third pressing shaft f30 and the fourth pressing shaft f31 are movably provided in the pressing shaft sliding cylinder sleeve f26, the fourth pressing shaft sliding cylinder sleeve f27 and the fifth pressing shaft sliding cylinder sleeve f28 respectively. The second pressing shaft f29 has a second dynamic pressing shaft block f32 at the upper end, and the fourth pressing shaft f31 has a third dynamic pressing shaft block f33 at the upper end. The ends of the second dynamic pressing shaft block f32 and the third dynamic pressing shaft block f33 are movably connected to the third knurled pressing wheel f34 and the fourth knurled pressing wheel f35 respectively through pivots or bearings.

[0042] The upper end of the third sliding and calendering shaft f30 is connected to the middle position of the top wheel shaft block f36, and the two ends of the top wheel shaft block f36 are respectively connected with the fifth knurled pressing wheel f37 through a pivot or a bearing. The third knurled pressing wheel f34 and the fourth knurled pressing wheel f35 are respectively arranged above the fifth knurled pressing wheel f37 at the two ends of the top wheel shaft block f36. Two chord through holes f38 are provided on the front plate f72. The third sliding and calendering shaft f30 has a third half gear f39 symmetrically arranged on both sides of the lower end. The second sliding and calendering shaft f29 and the fourth sliding and calendering shaft f31 are respectively provided with a fourth half gear f40 and a fifth half gear f41 meshing with the third half gear f39 on one side of the lower end. The fourth half gear f40 and the fifth half gear f41 meshing with the third half gear f39 rotate with each other to drive the third knurled pressing wheel f34, the fourth knurled pressing wheel f35 and the fifth knurled pressing wheel f37 to rotate, thereby eliminating the twisting of the steel bar;

[0043] A bolted swing arm f42 is provided on the side of the top wheel shaft block f36 away from the front plate f72, and a second square stud f43 is movably connected to the lower side of the bolted swing arm f42, and a second external threaded sleeve f44 is connected to the lower end of the second square stud f43, and a second pressure screw rod f45 is threadedly matched with one end of the second external threaded sleeve f44 away from the second square stud f43, and a second pressure screw rod seat f46 is provided on the outer sleeve of the second pressure screw rod f45, and the second pressure screw rod seat f46 is movably connected to the upper end surface of the lower suspension bar adjustment support plate f25, and a hand wheel is provided at the end of the second pressure screw rod f45 away from the second external threaded sleeve f44, and the deflection of the knurled pressure wheel is adjusted by manually adjusting the second pressure screw rod f45 to eliminate the deflection when the steel bar is straightened, so that the straightness of the truss meets the standard after the truss is formed;

[0044] The lower ends of the second sliding and pressing optical axis f29 and the fourth sliding and pressing optical axis f31 are coaxially provided with a first square screw rod f47 and a second square screw rod f48, respectively. The first square screw rod f47 and the second square screw rod f48 are sleeved with a long strip-shaped lifting bottom plate f49, and the first square screw rod f47 and the second square screw rod f48 are sleeved with a spring respectively. The spring is arranged below the lifting bottom plate f49, and the first square screw rod f47 and the second square screw rod f48 are provided with a nut for tightening the spring. The spring causes the second sliding and pressing axis f29 and the fourth sliding and pressing axis f31 to generate elastic force in the vertical direction, thereby placing the steel bar between the third knurled pressing wheel f34 and the fifth knurled pressing wheel f37, and between the fourth knurled pressing wheel f35 and the fifth knurled pressing wheel f37, thereby stabilizing the steel bar. The two ends of the lower hanging bar adjustment support plate f25 are respectively threadedly connected with a lifting rod f50, and the lower ends of the lifting rod f50 are respectively movably connected to the two ends of the lifting base plate f49, and the upper ends of the lifting rod f50 are provided with hand wheels.

[0045] A downward extending inverted plate f51 is provided on the front side of the lower suspension rib adjustment support plate f25, and two upward extending ladder plates f52 are provided on the side of the inverted plate f51 away from the lower suspension rib adjustment support plate f25, and a hole plate f53 is provided between the upper ends of the two ladder plates f52 close to the side of the lower suspension rib adjustment support plate f25, and the hole plate f53 is provided with two through holes for the chord bars to pass through, and a wear-resistant sleeve f54 corresponding to the through holes is provided on the side of the hole plate f53 away from the lower suspension rib adjustment support plate f25.

[0046] The two sides of the lower suspension bar adjustment support plate f25 are respectively provided with a screw base plate f55 extending downward, and the upper ends of the screw base plates f55 are respectively provided with dust ring seats f56. The lifting rod f57 is respectively penetrated through the dust ring seats f56 and the screw base plates f55 and threadedly matched. Specifically, the lower end of the lifting tooth rod f50 is provided with a square hole groove wheel f68, which is used to realize rotation with the two ends of the jacking bottom plate f49. The lifting tooth rod f50 is adjusted by adjusting the rotating lifting tooth rod f50 to adjust the distance between the jacking bottom plate f49 and the lower suspension bar adjustment support plate f25, thereby adjusting the relative distance between the third knurled pressing wheel f34 and the fifth knurled pressing wheel f37, as well as the relative distance between the fourth knurled pressing wheel f35 and the fifth knurled pressing wheel f37, thereby improving the stability of the steel bar and avoiding sway.

[0047] A small link plate f58 is provided on one side of the lower suspension rib adjustment support plate f25 close to the front plate f72, and one end of the front baffle plate f24 away from the front plate f72 is connected to the small link plate f58.

[0048] The product of the present invention is aimed at the three chords in the truss, all of which are ribbed steel bars (threaded steel bars). When the traction wheel is pulling, the three chords rotate around their own axes at different speeds, causing the chords welded later to be twisted in one direction to a certain extent. At the same time, this slowly accumulates, and the finished truss is torsional. The product achieves anti-twist by adjusting the half gear to change the extrusion angle of the pressure wheel, thereby preventing the speed of the steel bar rotation. In the actual truss production process, it is located between the straightening mechanism and the bending mechanism. The single chord anti-twist device is used for the anti-twist of a single steel bar. The steel bar first passes through the strip hole f71 on the front plate f72, and then passes through the chord hole f71 on the upper anti-twist base plate f1. The steel bar passes through the rib through hole f6, and then passes through the first knurled pressing wheel f3 and the second knurled pressing wheel f4 to form a rib conveying channel for extruding the rib. The steel bar is in an extruded state between the first knurled pressing wheel f3 and the second knurled pressing wheel f4, and the first knurled pressing wheel f3 and the second knurled pressing wheel f4 achieve an anti-slip effect. Finally, the steel bar passes through the channel formed between the two wear-resistant wheels f5. During the mutual rotation of the first half gear f13 and the second half gear f14, the first knurled pressing wheel f3 and the second knurled pressing wheel f4 are driven to rotate left and right to eliminate the distortion of the steel bar. At the same time, the first pressure screw rod f18 is manually adjusted to adjust the deflection of the knurled pressing wheel to eliminate the deflection of the steel bar during adjustment.

[0049] Similarly, the truss welded steel bar anti-twisting device in the product of the present invention comprises an upper chord steel bar, two lower chord steel bars and two web bars welded to the upper chord steel bar and the lower chord steel bar respectively. The upper chord steel bar and the two lower chord steel bars are respectively located at the vertices of the triangle. The uppermost steel bar is the upper chord steel bar. The specific conveying and adjustment process of the upper chord steel bar has been described in the single chord steel bar anti-twisting device. The two lowermost steel bars are the lower chord steel bars. The principle process is the same as that of the upper steel bar. Specifically, the two lower chord steel bars pass through the two chord steel bar perforations on the front plate. Then, the two lower chord steel bars are firmly rolled between the third knurled pressing wheel and the fifth knurled pressing wheel, and between the fourth knurled pressing wheel and the fifth knurled pressing wheel, respectively, and finally pass through the wear-resistant sleeves respectively. At the same time, the spacing between the upper chord steel bar and the lower chord steel bar is adjusted by rotating the screw to adjust the height of the truss. The deflection of the knurled pressing wheel is adjusted by manually adjusting the second pressure screw to eliminate the deflection when the steel bar is straightened. After the truss is formed, the straightness of the truss meets the standard.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0051] In addition, in the description of the present invention, the term "plurality" means at least two, for example, two,

[0052] Three, etc., unless otherwise clearly and specifically limited.

[0053] It should be noted that if the description and claims of the present application and the above-mentioned drawings relate to the terms "first", "second", etc., they are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, if the terms "including" and "having" and any of their variations are involved, it is intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0054] In addition, in this application, the terms "installed", "set", "provided with", "connected", "connected", "socketed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A single chord anti-twist device, characterized in that: In the actual truss production process, it is located between the straightening mechanism and the bending mechanism, including a vertically arranged upper anti-torsion base plate (f1), a sliding hole plate (f69) is arranged in parallel on the front side of the upper anti-torsion base plate (f1), sliding holes are arranged on both sides of the sliding hole plate (f69), and an upper double-hole bottom plate (f2) is vertically welded on the side of the lower end of the sliding hole plate (f69), and a first extrusion mechanism and a second extrusion mechanism for preventing the chord from moving left and right are movably penetrated on the upper double-hole bottom plate (f2), and the lower end of the first extrusion mechanism is movably connected with a first knurled pressing wheel (f3), and the lower end of the second extrusion mechanism is movably connected with a second knurled pressing wheel (f4), the first knurled pressing wheel (f3) is arranged above the second knurled pressing wheel (f4), and a chord conveying channel for extruding the chord is formed between the first knurled pressing wheel (f3) and the second knurled pressing wheel (f4), and the upper double-hole bottom plate (f2) is provided with a plurality of sliding holes. ) is welded with a wear-resistant wheel frame mounting plate (f65) extending vertically upward on the front side, and a wear-resistant wheel support plate mounting plate (f66) extending downward is connected to the front side of the wear-resistant wheel frame mounting plate (f65) by bolts, and wear-resistant wheel support plates (f67) are welded on both sides of the lower end of the wear-resistant wheel support plate mounting plate (f66), and the two wear-resistant wheel support plates (f67) are rotatably connected to the wear-resistant wheel (f5) through the wear-resistant wheel shaft, and the chord is conveyed and guided between the two wear-resistant wheels (f5), and the upper anti-twist base plate (f1) is provided with a chord through hole (f6) corresponding to the chord conveying channel, and the upper ends of the first extrusion mechanism and the second extrusion mechanism are provided with a transmission mechanism for eliminating the distortion of the chord, and the first extrusion mechanism is provided with an adjustment mechanism for adjusting the first knurled pressure wheel (f3) and the second knurled pressure wheel (f4), and an elastic mechanism is provided between the upper end of the second extrusion mechanism and the upper anti-twist base plate (f1); The upper double-hole bottom plate (f2) is provided with a first through hole and a second through hole respectively, the first extrusion mechanism comprises a first pressing shaft sliding cylinder sleeve (f7), the first pressing shaft sliding cylinder sleeve (f7) is inserted into the first through hole and is fixedly connected, a first sliding pressing shaft (f8) is slidably inserted into the first pressing shaft sliding cylinder sleeve (f7), a first pressing wheel shaft (f9) is provided at the lower end of the first sliding pressing shaft (f8), and the first knurled pressing wheel (f3) is arranged at one end of the first pressing wheel shaft (f9) close to the second extrusion mechanism; The second extrusion mechanism includes a second pressing shaft sliding cylinder sleeve (f10), the second pressing shaft sliding cylinder sleeve (f10) is inserted into the second through hole and fixedly connected, a first sliding pressing shaft (f11) is slidably inserted into the second pressing shaft sliding cylinder sleeve (f10), a first dynamic pressing shaft block (f12) is provided at the lower end of the first sliding pressing shaft (f11), the second knurled pressing wheel (f4) is arranged at an end of the first dynamic pressing shaft block (f12) close to the first pressing wheel shaft (f9), the transmission mechanism is arranged between the first sliding lower pressing shaft (f8) and the upper end of the first sliding pressing shaft (f11), the adjustment mechanism is arranged on the first pressing wheel shaft (f9), and the elastic mechanism is arranged between the upper end of the first sliding pressing shaft (f11) and the upper anti-twist base plate (f1); The transmission mechanism comprises a first half gear (f13) and a second half gear (f14), wherein the first half gear (f13) is arranged on the side surface of the upper end of the first sliding pressing shaft (f8), and the second half gear (f14) is arranged on the side surface of the upper end of the first sliding pressing shaft (f11), and the tooth groove surfaces of the first half gear (f13) and the second half gear (f14) are meshed with each other; The adjustment mechanism includes a first pull rod plate (f15), one end of the first pull rod plate (f15) is arranged on the side of the first pressure wheel shaft (f9) away from the upper anti-torsion base plate (f1), the upper end surface of the first pull rod plate (f15) is movably connected with a first square stud (f16), the end of the first square stud (f16) away from the first pull rod plate (f15) is provided with a first external threaded sleeve (f17), the internal thread of the first external threaded sleeve (f17) is matched with a first pressure screw rod (f18), the end of the first pressure screw rod (f18) away from the first external threaded sleeve (f17) is provided with a hand wheel, the outer sleeve of the first pressure screw rod (f18) is provided with a first pressure screw rod seat (f19), and upper rib side plates (f64) extending vertically upward are respectively welded on both sides of the upper double-hole bottom plate (f2), and the first pressure screw rod seat (f19) is connected to the upper rib side plates (f64) by pivot rotation; The elastic mechanism includes a rectangular screw rod (f20), one end of which is arranged on the upper end of the first sliding and pressing axis (f11) and is coaxially arranged, the outer movable sleeve of the rectangular screw rod (f20) is provided with a top pull plate (f21), the outer sleeve of the rectangular screw rod (f20) is provided with a butterfly spring (f22), and the butterfly spring (f22) is arranged above the top pull plate (f21), the thread on the rectangular screw rod (f20) is matched with a nut to tighten the butterfly spring (f22), and the upper end of the rectangular screw rod (f20) is provided with a hand wheel.

2. Truss welded steel bar anti-twisting device, characterized in that: The invention comprises a vertically arranged front plate (f72) and a single string reinforcement anti-twist device according to claim 1, wherein the upper anti-twist base plate (f1) is arranged on the front side of the front plate (f72) and slides in the vertical direction, the front plate (f72) is provided with a vertically arranged strip hole (f71) corresponding to the string reinforcement through hole (f6), the front plate (f72) is provided with a lifting motor bottom plate (f23), the lifting motor bottom plate (f23) is arranged below the upper anti-twist base plate (f1), the lifting motor bottom plate (f23) is provided with a spiral lifter (f70), the upper end of the spiral lifter (f70) is connected to the lower end of the upper anti-twist base plate (f1), the lifting motor bottom plate (f23) is provided with a front baffle (f24) extending upward at one end away from the front plate (f72), and the front baffle (f24) is provided with a lower suspension reinforcement adjustment support plate ( f25), the lower suspension rib adjustment support plate (f25) is provided with a third through hole, a fourth through hole and a fifth through hole arranged in a straight line, the third through hole, the fourth through hole and the fifth through hole are respectively welded with a third end-shaft sliding cylinder sleeve (f26), a fourth end-shaft sliding cylinder sleeve (f27) and a fifth end-shaft sliding cylinder sleeve (f28), and the third end-shaft sliding cylinder sleeve (f26), the fourth end-shaft sliding cylinder sleeve (f27) and the fifth end-shaft sliding cylinder sleeve (f28) are respectively movably penetrated There are a second sliding and pressing optical axis (f29), a third sliding and pressing optical axis (f30) and a fourth sliding and pressing optical axis (f31); a second dynamic pressure shaft block (f32) is provided at the upper end of the second sliding and pressing optical axis (f29); a third dynamic pressure shaft block (f33) is provided at the upper end of the fourth sliding and pressing optical axis (f31); the ends of the second dynamic pressure shaft block (f32) and the third dynamic pressure shaft block (f33) are respectively movably connected with a third knurled pressure wheel (f34) and a fourth knurled pressure wheel (f35); The upper end of the third sliding and calendering shaft (f30) is connected to the middle position of the top wheel shaft block (f36), and the two ends of the top wheel shaft block (f36) are respectively movably connected with the fifth knurled pressure wheel (f37), and the third knurled pressure wheel (f34) and the fourth knurled pressure wheel (f35) are respectively arranged above the fifth knurled pressure wheel (f37) at the two ends of the top wheel shaft block (f36), and the front plate (f72) is provided with two chord rib through holes (f38), and the third half gear (f39) is symmetrically provided on both sides of the lower end of the third sliding and calendering shaft (f30), ​​and the fourth half gear (f40) and the fifth half gear (f41) meshing with the third half gear (f39) are respectively provided on one side of the lower end of the second sliding and calendering shaft (f29) and the fourth sliding and calendering shaft (f31); A bolted swing arm (f42) is provided on the side of the top wheel shaft block (f36) away from the front plate (f72), and a second square stud (f43) is movably connected to the lower side of the bolted swing arm (f42), and a second external threaded sleeve (f44) is connected to the lower end of the second square stud (f43), and a second pressure screw rod (f45) is threadedly matched with an end of the second external threaded sleeve (f44) away from the second square stud (f43), and a second pressure screw rod seat (f46) is provided on the outer sleeve of the second pressure screw rod (f45), and the second pressure screw rod seat (f46) is movably connected to the upper end surface of the lower suspension rib adjustment support plate (f25), and a hand wheel is provided at the end of the second pressure screw rod (f45) away from the second external threaded sleeve (f44); The lower ends of the second sliding and pressing axis (f29) and the fourth sliding and pressing axis (f31) are coaxially provided with a first square screw rod (f47) and a second square screw rod (f48), and the first square screw rod (f47) and the second square screw rod (f48) are sleeved with a long strip-shaped lifting base plate (f49), and the first square screw rod (f47) and the second square screw rod (f48) are sleeved with springs respectively, and the springs are arranged below the lifting base plate (f49), and the first square screw rod (f47) and the second square screw rod (f48) are provided with nuts for tightening the springs, and the two ends of the lower suspension rib adjustment support plate (f25) are respectively threadedly connected with a lifting rod (f50), and the lower ends of the lifting rod (f50) are respectively movably connected to the two ends of the lifting base plate (f49), and the upper ends of the lifting rod (f50) are provided with hand wheels.

3. The truss welded steel bar anti-twisting device according to claim 2 is characterized in that: The front side of the lower suspension rib adjustment support plate (f25) is provided with an inverted plate (f51) extending downward, and the side of the inverted plate (f51) away from the lower suspension rib adjustment support plate (f25) is provided with two ladder plates (f52) extending upward, and a hole plate (f53) is provided between the upper ends of the two ladder plates (f52) close to the side of the lower suspension rib adjustment support plate (f25), and the hole plate (f53) is provided with two through holes for the chord bars to pass through, and the side of the hole plate (f53) away from the lower suspension rib adjustment support plate (f25) is provided with a wear-resistant sleeve (f54) corresponding to the through holes one by one.

4. The truss welded steel bar anti-twisting device according to claim 2, characterized in that: A small link plate (f58) is provided on one side of the lower suspension rib adjustment support plate (f25) close to the front plate (f72), and one end of the front baffle plate (f24) away from the front plate (f72) is connected to the small link plate (f58).

5. The truss welded steel bar anti-twisting device according to claim 2, characterized in that: The spiral lifter (f70) includes a shell (f59) with a hollow structure, and the shell (f59) is arranged on the lower end surface of the lifting motor base plate (f23). A worm wheel and a worm are arranged in the shell (f59), and a transmission force-bearing screw (f60) is screwed to the center of the worm wheel. A lifting flange (f61) is vertically connected to the lower end of the front side surface of the upper anti-twist base plate (f1), and the upper end of the screw (f60) is connected to the lifting flange (f61). A bearing is arranged between the worm wheel and the inner wall of the shell (f59). The rotation of the worm drives the worm wheel to rotate. One end of the worm is connected to the output shaft of a motor (f62), and the motor (f62) is arranged on the lower end surface of the lifting motor base plate (f23).

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