CN216096103U - Truss welding steel bar bending device - Google Patents

Truss welding steel bar bending device Download PDF

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Publication number
CN216096103U
CN216096103U CN202120501805.XU CN202120501805U CN216096103U CN 216096103 U CN216096103 U CN 216096103U CN 202120501805 U CN202120501805 U CN 202120501805U CN 216096103 U CN216096103 U CN 216096103U
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swing arm
rod
chain
transmission
shaft
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CN202120501805.XU
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简华涛
赵刚
汪东林
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Chengdu Gute Machienry Works Co ltd
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Chengdu Gute Machienry Works Co ltd
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Abstract

The utility model relates to a bending device for a truss welding steel bar, which comprises a frame, a double-swing-rod power linkage mechanism and a traction mechanism, wherein a chain transmission system and a lower chain transmission system are supported on the frame correspondingly, the outer side of a transmission chain of the chain transmission system is fixedly connected with a traction pin, the bottom of the frame is provided with an extension end of a transmission shaft which is in transmission connection with a power device, the extension end of the transmission shaft sequentially penetrates through and is circumferentially fixed with a driving sprocket of the two chain transmission systems, the swing-rod power linkage mechanism comprises an upper swing-arm transmission shaft and a lower swing-arm transmission shaft which are supported on the frame in parallel, the two chain transmission systems are positioned between the upper swing-arm transmission shaft and the lower swing-arm transmission shaft, the front extension ends of the two swing-arm transmission shafts are fixedly provided with adjusting swing arms, bending pins are arranged at the free ends of the adjusting swing arms, the rear extension end of the lower swing-arm transmission shaft is connected with a lower swing-arm power rod, the rear extension end of the upper swing-arm transmission shaft is connected with an upper swing arm power rod, two axial ends of the swing arm middle seat are respectively hinged with an inner swing arm middle rod and an outer swing arm middle rod which are arranged in a staggered mode.

Description

Truss welding steel bar bending device
Technical Field
The utility model relates to a forming device, in particular to a bending device for a truss welding steel bar.
Background
Along with the development of the domestic steel structure construction industry and the continuous improvement of production efficiency, the prior manual rolling of steel bars in a concrete floor slab cannot keep pace with the modern pace, the production mode of manual assembling and manual welding cannot meet the requirement due to the defects of high labor intensity, low production efficiency, unstable quality and the like, a group of steel bars are processed into a steel bar truss through automatic processes of straightening, bending, conveying, welding and the like in a factory, a steel bar truss welding production line is used for industrially producing a steel bar truss for buildings, and after the steel bar truss is welded with the steel floor slab into a whole, concrete can be directly poured on the steel bar truss without a support column, so that the steel bar truss has the advantages of high efficiency, short construction period, good rigidity and the like, and the steel bar truss welding production line is more and more widely applied in the construction industry at present. The binding of the steel bars of the existing first-generation and second-generation profiled steel plates is complicated, and the distance between the steel bars and the thickness of a concrete protective layer are not well controlled, so that a novel and efficient web bar bending structure in a steel bar truss welding production line is necessary to be designed. At present, a triangular girder truss production line used in the building industry or other industries needs to bend metal wires into web member reinforcing steel bars with different sizes, and most of the web member reinforcing steel bars are corrugated. In the production line of the triangular girder truss in the prior art, three types of equipment for bending and processing web member reinforcing steel bars into corrugated shapes are provided, namely disc type bending and forming equipment, crawler chain type bending and forming equipment and pneumatic four-connecting-rod type bending and forming equipment. The above molding apparatuses have the following disadvantages: low production efficiency, unstable work and the like, and can not pull the string bars fed together.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a bending device for a truss welding steel bar, which can bend a web bar and ensure the synchronism of all movements of the whole device.
The purpose of the utility model is realized as follows: a bending device for a truss welding steel bar comprises a rack, a double-swing-rod power linkage mechanism and a traction mechanism, wherein a chain transmission system and a lower chain transmission system are arranged on the rack and correspondingly supported on a chain transmission system, a traction pin is fixedly connected to the outer side of a transmission chain of the chain transmission system, the bottom of the rack is provided with an extension end of a transmission shaft which is in transmission connection with a power device, the extension end of the transmission shaft sequentially penetrates through driving sprockets of the two chain transmission systems and is circumferentially fixed with the driving sprockets,
the swing rod power linkage mechanism comprises an upper swing arm transmission shaft and a lower swing arm transmission shaft which are supported on the frame in parallel, two chain transmission systems are positioned between the upper swing arm transmission shaft and the lower swing arm transmission shaft, the front extending ends of the two swing arm transmission shafts are fixedly provided with adjusting swing arms, and the free ends of the adjusting swing arms are provided with bending pins,
the rear extension end of the lower swing arm transmission shaft is connected with a lower swing arm power rod, the rear extension end of the upper swing arm transmission shaft is connected with an upper swing arm power rod, two axial ends of a swing arm middle seat are respectively hinged with an inner swing arm middle rod and an outer swing arm middle rod which are arranged in a staggered manner, one end of the inner swing arm middle rod is hinged with one end of a lower inner swing arm relay rod, the other end of the lower inner swing arm relay rod is hinged with a radial extension section of the lower swing arm power rod, the other end of the inner swing arm middle rod is hinged with one end of an upper swing arm relay rod, the other end of the upper inner swing arm relay rod is hinged with one end of an upper swing arm transmission rod, one end of the outer swing arm middle rod is hinged with one end of a lower outer swing arm relay rod, the other end of the lower outer swing arm relay rod is hinged with the other radial extension end of the lower swing arm power rod, and the other end of the outer swing arm middle rod is hinged with one end of an upper outer swing arm relay rod, the other end of the upper outer swing arm relay rod is hinged with the other end of the upper swing arm transmission rod,
the traction mechanism comprises a main power large shaft supported on the frame, a main power swing arm is circumferentially fixed at the rear extending end of the main power large shaft, the front end of the main power large shaft is connected with a stepping swing arm, the extending free end of the stepping swing arm is hinged with one end of a supporting pull rod, the other end of the supporting pull rod is hinged with a re-entering main board which is in sliding fit with the frame, and at least one group of traction groups for traction of the chord ribs is arranged on the re-entering main board; the traction group comprises at least one traction seat, the traction seat comprises an installation seat plate, a first one-way roller and a second one-way roller which float relatively are supported on the side surface of the installation seat plate,
the free end of the main power swing arm is hinged with the main power pull arm, the other end of the main power pull arm is eccentrically hinged to a crank or a flywheel at the output end of the power device, one end of a swing arm connecting rod is eccentrically hinged to the crank or the flywheel at the output end of the power device, and the other end of the swing arm connecting rod is hinged to the free end of a swing arm section arranged on a lower swing arm power rod.
The chain transmission system comprises a transmission chain and a chain wheel, wherein the transmission chain comprises a plurality of main chain plates which are annularly arranged, three co-circular meshing teeth are arranged on the main chain plates, the meshing teeth positioned at two ends of the main chain plates are provided with end opening grooves, two adjacent main chain plates are connected by an outer chain plate, and two ends of the outer chain plate respectively extend into the adjacent end opening grooves and are hinged with the end opening grooves; the outer circumference of the chain wheel is provided with an annular cutting groove used for yielding the outer chain plate, the two sides of the annular cutting groove are respectively provided with an upper meshing flange part and a lower meshing flange part, and meshing teeth and tooth grooves are alternately arranged on the outer circumferences of the upper meshing flange part and the lower meshing flange part respectively.
The lifting main base plate capable of sliding up and down is arranged on the rack, the chain transmission system and the upper swing arm transmission shaft are supported on the lifting main base plate, a swing arm middle seat capable of sliding along the connecting line direction of the upper swing arm transmission shaft and the lower swing arm transmission shaft is arranged on the rack, and the length of the arm body of the adjusting swing arm is adjustable.
Frame back fixed connection drive mechanism mounting bracket, set up the rectangular shape hole that the major axis extends in vertical direction on the drive mechanism mounting bracket, the strip shape hole is run through to the swing arm middle seat, and the circumference and the rectangular shape hole circumference of swing arm middle seat are spacing, the swing arm middle seat on the major axis direction in a hole with rectangular shape hole sliding fit, two of swing arm middle seat respectively stretch out outer first through-hole's axial end articulated staggered arrangement's respectively in swing arm middle pole, outer swing arm middle pole, the swing arm power pole down is connected to the back extension end in the rectangular shape hole of going out of lower swing arm transmission shaft, go up the back extension end that the swing arm transmission shaft stretches out the strip shape hole and connect up swing arm power pole.
Go up muscle movable baseplate on the lift main substrate horizontal sliding fit, go up muscle movable baseplate's preceding tip and the sliding fit of reentrant mainboard in vertical direction, it is spacing on string muscle extending direction with the reentrant mainboard to go up muscle movable baseplate's preceding tip, go up muscle movable baseplate and go up set up a set of group at least and pull the group.
The stepping swing arm comprises a main shaft sliding plate, one side of the main shaft sliding plate is fixedly connected with a main power shaft, the main power shaft is supported on the frame through a bearing, a radial sliding hole is formed in the other side of the main shaft sliding plate, a telescopic inner arm rod is in sliding fit in the radial sliding hole and is circumferentially limited with a telescopic inner wall, the extending end, extending out of a sliding strip hole, of the telescopic inner arm rod is hinged to one end of a supporting pull rod, a threaded hole extending in the radial direction is formed in the other end of the telescopic inner arm rod, a rotary power device is arranged at the tail of the main shaft sliding plate, and a screw rod section of a power output end of the rotary power device is in spiral fit with the threaded hole.
The power device can comprise a first speed reducer, the input end of the first speed reducer is fixedly connected with the output end of the motor, one output shaft of the first speed reducer is fixedly connected with a power flywheel, the other output end of the first speed reducer is in transmission connection with the input end of a second speed reducer, the output end of the second speed reducer is in transmission connection with a gear commutator, and the output end of the gear commutator is circumferentially fixedly provided with a transmission shaft.
Each group of traction groups on the frame corresponding to the re-entering main board is provided with a traction seat for stopping back; and each group of traction groups on the lifting main base plate corresponding to the upper rib movable base plate is provided with a traction seat for stopping.
The side of installation bedplate connects the fixed lower shaft fixed block, and the side supporting first bearing axle of lower shaft fixed block, the first one-way bearing of first bearing, the first one-way bearing overcoat is first to roll the circle, the side of installation bedplate passes through slide rail cooperation upper shaft fixed block, the upper shaft fixed block is located the top of lower shaft fixed block, the side supporting second one-way bearing of upper shaft fixed block, the rotatable second one-way bearing of supporting on the second one-way bearing, the second one-way bearing overcoat is second to roll the circle, the upper end of installation bedplate sets up the side shield of lateral extension, set up adjusting bolt on the side shield, fixed compression elastic element on the lower extension end that adjusting bolt stretches out side shield down, compression elastic element's tip supports and leans on at the upper shaft locating piece.
Set up relative sprocket axial position fixed positive back riser between chain drive system's action wheel and the driven sprocket, positive back riser sets up the spout that holds the tight limit of drive chain towards the tight limit one side of drive chain.
By adopting the scheme, the clamping device has the advantages that the first one-way roller and the second one-way roller which float relatively can keep contact with the clamped steel bar all the time, meanwhile, the clamping space of the chord bar formed between the two one-way rollers can be automatically adjusted according to the diameter of the steel bar to be suitable for the steel bars with different diameters, the free rotating directions of the two one-way rollers are opposite, the one-way rollers can only rotate around one rotating direction, so that the steel bar can only move forwards in one direction relative to the traction seat, the traction seat moves forwards, namely, when the steel bar moves backwards relative to the sliding traction seat, the one-way rollers are locked, when the swing arm swings, the free end of the stepping swing arm pulls the supporting pull rod to move, the supporting pull rod then pulls the re-entering main board to slide, the re-entering main board drives the traction group to move, then the traction seat moves, the friction force between the one-way rollers and the steel bar drives the steel bar to move, when the swing arm swings back, the support pull rod resets, the main board is reset in a re-advancing mode, the traction seat resets, the one-way idler wheel rotates at the moment, the traction seat moves backwards relative to the steel bars, the reset of the whole mechanism is achieved, and the next working cycle is started. The two axial ends of the swing arm middle seat are respectively hinged with inner swing arm middle rods, outer swing arm middle rods which are arranged in a staggered mode, the swing amplitude and the swing speed are synchronous, then the power transmitted by a rod piece reaches an upper swing arm transmission rod, the motion of the upper swing arm transmission rod and the motion of a lower swing arm power rod are kept synchronous, meanwhile, a part of power of the lower swing arm power rod is transmitted to the upper swing arm transmission rod through a lower inner swing arm relay rod, the inner swing arm middle rods and the upper inner swing arm relay rod, and meanwhile, a part of power of the lower swing arm power rod is transmitted to the upper swing arm transmission rod through a lower outer swing arm relay rod, an outer swing arm middle rod and an upper outer swing arm relay rod, by adopting the mode, the power can be transmitted through two paths, when one path power transmission structure approaches a dead point, the other path can continuously transmit the power, and the condition that the whole power transmission mechanism has a motion dead point can be avoided, meanwhile, the stress at the two ends of each rod piece of the inner swing arm middle rod, the outer swing arm middle rod, the upper swing arm transmission rod and the lower swing arm power rod tends to be offset and balanced relative to the central position of the rod piece, so that the fixation of each rod piece can be facilitated, and the reliability of the whole transmission system can be improved. The rotation of transmission shaft makes upper and lower chain drive system rotate in step, chain drive system's drive chain and lower chain drive system drive chain move toward a direction simultaneously on the chain drive system, the translation rate is the linear velocity of the sprocket teeth of a cogwheel promptly, drive chain's outside fixed connection towing pin, its effect plays support and shaping effect when the binder is bent, the distance of two towing pins that chain drive system is adjacent on the chain drive system is unanimous with the distance of two towing pins that chain drive system is adjacent down, its length dimension equals binder bar node interval L after the binder is bent the shaping. The traction pins of the upper chain transmission system and the traction pins of the lower chain transmission system are staggered in the horizontal projection position, and the staggered distance is half of the node distance L of the web members. The adjusting swing arm can be driven to do swing motion alternately through the power transmission mechanism, and a bending pin web rib arranged on the adjusting swing arm is bent into a wave shape along the directions of a traction pin arranged on the upper chain transmission system and a traction pin arranged on the lower chain transmission system. The power device makes the transmission chain generate uniform motion and the two adjusting swing arms swing rhythmically through the fixed transmission shaft, so that the straight web member reinforcing steel bars can be bent into wave-shaped web member reinforcing steel bars with fixed pitches for welding and forming a subsequent truss. By adopting the scheme, the integration level of the movement mechanism is high, the traction movement of the chord tendon, the bending movement of the abdominal tendon and the synchronization of the traction movement of the abdominal tendon can be realized through the same power device, and the planned automatic production can be realized.
The utility model is further described with reference to the following figures and specific examples.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of an arrangement structure of a main power pulling arm;
FIG. 3 is a schematic view of the arrangement of the chain drive system;
FIG. 4 is a schematic structural view of a dual-pendulum power linkage mechanism;
FIG. 5 is a front view of FIG. 4;
FIG. 6 is a schematic view of the structure of the transmission chain engaged with the sprocket;
FIG. 7 is a schematic view of the mounting structure of the first transmission chain press seat plate;
FIG. 8 is a schematic view of the mounting structure of the lower front vertical plate and the lower rear vertical plate;
FIG. 9 is a schematic view of the traction mechanism;
FIG. 10 is a schematic view of the fifth wheel;
FIG. 11 is an exploded view of FIG. 10;
FIG. 12 is a schematic view of the structure of the radial sliding holes in the stepping swing arm;
fig. 13 is a schematic diagram of the relative positions of the swing arm connecting rod and the main power pulling arm.
In the drawing, 11 is a second traction base, 12 is a first one-way roller, 13 is a second one-way roller, 14 is a stepping swing arm, 15 is a support pull rod, 16 is a re-advancing main plate, 17 is a third traction base, 19 is an upper rib movable base plate, 20 is a bottom fixed block, 22 is a fourth traction base, 24 is an upper shaft fixed block, 25 is a side baffle, 26 is an adjusting bolt, 27 is a compression elastic element, 28 is a spring guide column, 30 is a lower shaft fixed block, 31 is a mounting groove, 32 is a mounting base plate, 34 is a main power large shaft, 38 is a speed reducer, 39 is a two-way motor, 42 is a first traction base, 43 is a rectangular fixed frame, 46 is a front plate, 56 is a screw rod, 57 is a fifth traction base, 58 is a sixth traction base plate, 61 is a base plate connecting shaft, 62 is a longitudinal groove, 63 is a seventh traction base, 64 is an eighth traction base, 65 is a ninth traction base, 68 is an upper chord rib, 69 is a lower rib, 70 is an upper mounting plate, 71 is a main power swing arm, 72 is a main power draw arm, 101 is a step seat plate, 121 is a first one-way bearing, 122 is a first rolling ring, 123 is a first bearing shaft, 131 is a second one-way bearing, 132 is a second rolling ring, 133 is a second bearing shaft, 141 is a telescopic sleeve, 142 is a radial sliding hole, 143 is a main shaft slideway plate, 145 is a telescopic inner arm rod, 146 is a radial threaded hole, 151 is a main chain plate, 152 is a chain wheel, 161 is a bending pin, 181 is a rocking arm section, 321 is a horizontal plate, 361 is an arc top surface, 481 is a guiding conical surface, 002 is a second rotating pair, 003 is a third rotating pair, 004 is a fourth rotating pair, 005 is a fifth rotating pair, 006 is a sixth rotating pair, 007 is a seventh rotating pair, 008 is an eighth rotating pair, a9 is an outer chain plate, 152is an end portion, 1513 is a pin shaft, 1 is an annular slot, 2 is an upper meshing flange portion, a tooth 152is a tooth, a10 is a frame, a10 is a transmission shaft, a10 is a transmission chain, a10 is a driving sprocket, a10 is an adjusting swing arm, a10 is a lower swing arm power rod, a10 is an upper swing arm power rod, a10 is a swing arm middle seat, a10 is an inner swing arm middle rod, a10 is an outer swing arm middle rod, a10 is an upper swing arm transmission rod, a10 is a lower outer swing arm relay rod, a10 is an upper outer swing arm relay rod, a10 is a power flywheel, a10 is a swing arm connecting rod, a10 is a second speed reducer, a10 is an upper swing arm transmission shaft, a10 is a lower swing arm transmission shaft, a10 is a lifting main base plate, a10 is a second opposite chain pressing strip, a10 is a guide groove, a10 is a traction pin, a10 is a through hole, a10 is a limit pin hole, a10 is a driving wheel, a10 is a driven sprocket, a10 is a10, a10 is a transmission chute 72 is a transmission chute, a first chain pressing rack is a first chain pressing seat plate, a10 a first driving seat plate is a10, a first driving seat plate pressing strip 10, a10 is a first driving seat 10, a50 is a transmission mechanism mounting frame, a51 is a long strip-shaped hole, a52 is a first speed reducer, and b is a tooth groove.
Detailed Description
Specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 13, an embodiment of a truss-welded steel bar bending device, includes a frame a10, a dual-swing link power linkage mechanism, and a traction mechanism, where the frame a10 supports an upper chain transmission system and a lower chain transmission system corresponding to each other in an up-down direction, a driving sprocket a16 of each chain transmission system is drivingly connected to a corresponding driven sprocket a40 through a closed driving chain a15, an outer side of a driving chain a15 of the chain transmission system is fixedly connected to a traction pin a36, an extending end of a driving shaft a14 drivingly connected to the power device is disposed at a bottom of the frame a10 and sequentially passes through the driving sprockets a16 of the two chain transmission systems and is circumferentially fixed to the driving sprocket a16, the driving shaft a14 may include a spline extending shaft segment, a square shaft segment, or a flat square shaft extending shaft segment, although a cross section disposed on the driving shaft a14 may also be disposed in an oval shape, polygonal, or other non-circular, extending shaft segments are used to transmit torque, and the drive shaft a14 is used to transmit torque to the drive sprocket a 16.
Chain drive system, including drive chain a15 and sprocket 152, drive chain a15 includes the main chain plate 151 that a plurality of annulars were arranged, set up three colinear meshing tooth a on the main chain plate 151, meshing tooth a's tooth profile can be the circular arc line, and meshing tooth a that is located main chain plate 151 both ends sets up tip open slot 1512, is connected by outer chain plate a9 between two adjacent main chain plates 151, outer chain plate a9 both ends stretch into respectively in the tip open slot 1512 that is close to and articulate with tip open slot 1512. An annular cutting groove 1521 for giving way to the outer chain plate a9 is arranged on the outer circumference of the chain wheel 152, an upper meshing flange portion 1522 and a lower meshing flange portion are respectively arranged on two sides of the annular cutting groove 1521, meshing teeth a and tooth grooves b are respectively and alternately arranged on the outer circumferences of the upper meshing flange portion 1522 and the lower meshing flange portion, and the tooth grooves b can be meshed with the meshing teeth a on the main chain plate 151. By adopting the transmission chain a15, the meshing structure has large meshing tooth a and large meshing contact surface; for whole main link joint 151, go up the meshing flange and mesh greatly between the flange down, make the meshing of main link joint 151 compacter, main link joint 151 anti skew performance is strong, adopt this kind of chain drive system simultaneously, because every main link joint 151 is gone up and is had three meshing tooth a, the round pin axle 1513 hinge structure in the whole chain drive system has further been reduced, when simplifying the structure, can effectively improve the reliability of whole drive chain a15, two main link joints 151 can be connected at the transmission process link joint, in the motion process, a part of outer link joint a9 stretches into and can carry on spacingly to drive chain a15 simultaneously, adopt this kind of structure, the lower terminal surface of link joint can form the stress surface with other plane contacts. With the above structure, the traction force of the entire transmission chain a15 is large, and the transmission chain a15 can apply large traction force in both the forward and backward directions in actual production. In this embodiment, through holes a37 are formed at two ends of the outer link plate a9 for the pin 1513 to pass through, and two ends of the pin 1513 respectively extend into the mounting holes on the inner wall of the end opening groove 1512, and the mounting holes can pass through the engaging teeth a at the end of the main link plate 151. Through hole a37 lateral wall sets up spacing pin hole a38 interior cooperation spacing pin, the depressed part on the round pin axle 1513 is stretched into to the interior section of stretching out of spacing pin, the depressed part can be blind hole, through-hole or ball socket etc. adopts this kind of structure, can simplify the structure of round pin axle 1513, can also prevent round pin axle 1513 axial float simultaneously. The outer side of the transmission chain a15 is fixedly connected with a traction pin a36, and the traction pins a36 of the upper and lower chain transmission systems are staggered with each other in the horizontal projection position. In this embodiment, a traction pin a36 is integrally formed on the outer side of the main chain plate 151 of the transmission chain a15, a downward arc top surface 361 of the traction pin a36 of the transmission chain a15 of the lower chain transmission system is provided, a traction pin a36 of the transmission chain a15 of the lower chain transmission system is provided with the upward arc top surface 361, a sliding fit plane is arranged on one side of the traction pin a36 opposite to the arc top surface 361, and the sliding fit plane can be flush with the lower end surface of the main chain plate 151. The connecting structure of the towing pin a36 can be effectively simplified through the integrated structure, the connecting structure such as a connecting hole or a groove is avoided, and meanwhile, the structural strength of the main chain plate 151 and the towing pin a36 can be effectively enhanced.
The swing rod power linkage mechanism comprises an upper swing arm transmission shaft a30 and a lower swing arm transmission shaft a31 which are supported on a rack a10 in parallel, two chain transmission systems are positioned between the upper swing arm transmission shaft a30 and the lower swing arm transmission shaft a31, the forward extending ends of the two swing arm transmission shafts are fixedly provided with an adjusting swing arm a17, and the free end of the adjusting swing arm a17 is provided with a bending pin 161; adjust swing arm a17 can include the swing arm seat that is used for fixing with swing arm transmission shaft a14, the free end of swing arm seat sets up opening width adjustable constant head tank, constant head tank fit in swing arm, the free end of swing arm sets up the round pin of buckling towards driving sprocket 152. Wherein the upper swing arm drive shaft a30 is located above the driven sprocket a40 of the chain drive system and the upper swing arm drive shaft a30 is located below the driven sprocket a40 of the lower chain drive system.
The rear extension end of the lower swing arm transmission shaft a31 is connected with a lower swing arm power rod a18, the rear extension end of the upper swing arm transmission shaft a30 is connected with an upper swing arm power rod a19, the machine frame a10 is provided with a swing arm middle seat a20, the swing arm middle seat a20 is positioned between the upper swing arm power rod a19 and the lower swing arm power rod a18, two axial ends of the swing arm middle seat a20 are respectively hinged with an inner swing arm middle rod a21 and an outer swing arm middle rod a22 which are arranged in a staggered manner, one end of the inner swing arm middle rod a21 is hinged with one end of an upper inner swing arm relay rod a231 through a first revolute pair 001, the other end of the lower inner swing arm relay rod a231 is hinged with a radial extension section of the lower swing arm power rod a18 through a second revolute pair 002, the other end of the inner swing arm middle rod a21 is hinged with one end of the upper inner swing arm relay rod a232 through a third revolute pair 003, and the other end of the upper swing arm relay rod a232 is hinged with a24 through a fourth revolute pair 36004, one end of the outer swing arm middle rod a22 is hinged with one end of the lower outer swing arm relay rod a25 through a fifth revolute pair 005, the other end of the lower outer swing arm relay lever a25 is hinged to the other radially extending end of the lower swing arm power lever a18 through a sixth revolute pair 006, the other end of the outer swing arm middle rod a22 is hinged with one end of the upper outer swing arm relay rod a26 through a seventh revolute pair 007, the other end of the upper outer swing arm relay rod a26 is hinged with the other end of the upper swing arm transmission rod a24 through an eighth revolute pair 008, the figures formed by connecting the first revolute pair 001, the second revolute pair 002, the third revolute pair 003 and the fourth revolute pair 004 at the head positions are identical to the figures formed by connecting the fifth revolute pair 005, the sixth revolute pair 006, the seventh revolute pair 007 and the eighth revolute pair 008 at the head and tail positions, and by adopting the structure, the cooperativity and the consistent motion amplitude of the two upper swing arm transmission shafts a30 and the lower swing arm transmission shaft a31 can be ensured.
The traction mechanism comprises a main power large shaft 34 supported on a frame a10, a main power swing arm 71 is circumferentially fixed at the rear extending end of the main power large shaft 34, and the front end of the main power large shaft 34 is connected with a stepping swing arm 14. The machine frame a10 is provided with a stepping swing arm 14, in this embodiment, the stepping swing arm 14 is provided on the front surface of a stepping seat plate 101, a main power main shaft 34 penetrating through the stepping seat plate 101 is supported on the stepping seat plate 101 through a bearing in a mounting seat hole, the stepping swing arm 14 includes a main shaft slide plate 143, one side of the main shaft slide plate 143 is connected and fixed with the main power main shaft 34, and the main power main shaft 34 is in transmission connection with a power device on the machine frame a 10. Preferably, the arm body of the stepping swing arm 14 is retractable, in this embodiment, the other side of the main shaft sliding plate 143 is connected to a fixed telescopic sleeve 141, the telescopic sleeve 141 is provided with a groove facing the main shaft sliding plate 143, the groove forms a radial sliding hole 142 with the plate surface of the main shaft sliding plate 143, the radial sliding hole 142 is in sliding fit with a telescopic inner arm 145, the radial sliding hole 142 is circumferentially limited with a telescopic inner wall, the radial sliding hole 142 may be a hole with a non-circular cross section, or of course, the circumferential limitation may be achieved by a spline or a connecting key, an extending end of the telescopic inner arm 145 extending out of a sliding bar hole is hinged to one end of the support rod 15, the other end of the telescopic inner arm 145 is provided with a radially extending threaded hole, the tail of the main shaft sliding plate 143 is provided with a rotary power device, and a screw rod section of a power output end of the rotary power device is in spiral fit with the threaded hole. Of course, the rotary power device may include a speed reducer disposed on the main shaft sliding plate 143, an input end of the speed reducer 38 is in transmission connection with an output end of the two-way motor 39, a screw rod section of an output end of the speed reducer 38 is in threaded fit with the radial threaded hole 146 of the telescopic inner arm rod 145 through threads, by adopting this structure, the swing amplitude of the free end of the stepping swing arm 14 can be adjusted, and the adjustment of the traction step pitch can be realized by adjusting the swing amplitude, so that the rotary power device can be suitable for the production of steel bar trusses with different step pitches.
The extended free end of the stepping swing arm 14 is hinged with one end of a supporting pull rod 15, the other end of the supporting pull rod 15 is hinged with a retracing main plate 16 which is in sliding fit with the rack a10, and at least one group of traction groups for traction chord tendons is arranged on the retracing main plate 16; the traction group comprises at least one traction seat, the traction seat comprises an installation seat plate 32, a first one-way roller 12 and a second one-way roller 13 which float relatively are supported on the side surface of the installation seat plate 32, the relative floating direction of the two one-way rollers is crossed with the clamped chord rib feeding direction, when the two one-way rollers move in opposite directions, the clamping space is narrowed, the free rotation directions of the two one-way rollers are opposite, and the chord rib clamping space is formed between the two one-way rollers. Furthermore, the side surface of the mounting seat plate 32 is connected and fixed with the lower shaft fixing block 30, the side surface of the lower shaft fixing block 30 supports the first bearing shaft 123, the first one-way bearing 121 is supported on the first bearing shaft 123, the first rolling ring 122 is sleeved outside the first one-way bearing 121 to form the first one-way roller 12, the side surface of the mounting seat plate 32 is matched with the upper fixing block 24 through a sliding rail, the upper fixing block 24 is positioned above the lower shaft fixing block 30 and can move away from or close to the lower shaft fixing block 30 through the sliding rail, the side surface of the upper fixing block 24 supports the second bearing shaft 133, the second bearing shaft 133 supports the rotatable second one-way bearing 131, the second one-way bearing 131 is sleeved with the first one-way bearing 121, the second rolling ring 132 forms the second one-way roller 13, and the service life of the one-way bearing and the service life of the one-way roller can be prolonged by arranging the first rolling ring 122 and the second rolling ring 132, meanwhile, the first one-way bearing 121 and the second one-way bearing 131 can be replaced conveniently, the supporting of the rollers by the bearings can be realized by combining the bearings, the supporting force for the rollers can be increased, and straight grains or reticulate patterns are arranged on the outer circumferences of the first rolling ring 122 and the second rolling ring 132 to improve the friction force. In this embodiment, the lower shaft fixing block 30 is clamped with a boss arranged at the lower end of the mounting seat plate 32 through a vertical mounting groove 31 and fastened through a fastener, the boss can be the bottom fixing block 20 connected to the side face of the mounting base plate, the upper shaft fixing block 24 is fastened through the fastener and the back of a sliding block of a sliding rail through the vertical mounting groove 31 and the joint, the clamping structure can achieve positioning, large traction force can be transmitted in the feeding direction of the string tendon, the arrangement structure is adopted, the height of the sliding rail is compensated and connected through the boss, the mounting face of the mounting base plate is simple to process, and cost reduction is facilitated.
The upper end of the mounting seat plate 32 is provided with a side baffle 25 extending laterally, the side baffle 25 is provided with an adjusting bolt 26, the lower extending end of the adjusting bolt 26 extending out of the side baffle 25 is fixed with a compression elastic element 27, the end part of the compression elastic element 27 abuts against an upper shaft positioning block, the compression elastic element 27 can be a compression spring, a polyurethane rubber block with a through hole or a serial belleville spring group, and the elastic element is sleeved on a screw 56 of the adjusting bolt 26 in a penetrating manner; in this embodiment, the compression elastic element 27 is a coil spring, the side baffle 25 may be provided with a support block, and the support block is provided with a mounting hole for the coil spring. Furthermore, a compression elastic element 27 is arranged between the lower shaft fixing block 30 and the upper shaft fixing block 24, and the upper shaft fixing block 24 moves upwards under the condition that the adjusting bolt 26 is loosened through the compression elastic element, so that the truss steel bars can be conveniently guided to pass through before the operation is performed again; in this embodiment, the compression elastic element 27 is a compression spring disposed between the lower shaft fixing block 30 and the upper shaft fixing block 24, a set of spring guide posts 28 is disposed on the lower shaft fixing block 30, each spring guide post 28 is sleeved with a compression spring, and a fitting hole for the spring guide post 28 to pass through is disposed on the upper shaft fixing block 24.
The free end of the main power swing arm 71 is hinged with a main power pull arm 72, the other end of the main power pull arm 72 is eccentrically hinged on a crank or a flywheel at the output end of the power device, one end of a swing arm connecting rod a28 is eccentrically hinged on the crank or the flywheel at the output end of the power device, and the other end of a swing arm connecting rod a28 is hinged with the free end of a rocker arm section 181 arranged on a lower swing arm power rod a 18. Specifically, an eccentric hole can be formed in the power flywheel a27, an extended hinge shaft is arranged in the eccentric hole, the other end of the main power pull arm 72 is sleeved on the hinge shaft in an empty mode to form a hinge structure, and one end of the swing arm connecting rod a28 is sleeved on the hinge shaft in an empty mode to form the hinge structure. The power device can comprise a first speed reducer a52, wherein the input end of the first speed reducer a52 is fixedly connected with the output end of the motor, one output shaft of the first speed reducer a52 is fixedly connected with a power flywheel a27, the other output end of the first speed reducer a52 is in transmission connection with the input end of a second speed reducer a29, the output end of the second speed reducer a29 is in transmission connection with a gear reverser, and the output end of the gear reverser is circumferentially fixed with a transmission shaft a 14; by adopting the structure, the motion of the transmission chain a15 and the motion synchronism of the upper swing arm transmission shaft a30 and the lower swing arm transmission shaft a31 can be always kept unchanged, the traction of the web rib of the transmission chain a15 and the bending of the web rib can be completed in a very tacit manner, meanwhile, the structure can still meet the synchronism under the bending operation at different truss heights, the transmission mechanism and the power device of the whole system can be reduced, the integration level of the whole device is high, the synchronism is high, and the mechanical reliability is obviously improved.
The utility model is not limited to the above embodiment, the rack a10 is provided with a swing arm middle seat a20 which can slide along the connecting line direction of the upper swing arm transmission shaft a30 and the lower swing arm transmission shaft a 31; the machine frame a10 supports an upper swing arm transmission shaft a30 which can move relative to a lower swing arm transmission shaft a 31. Specifically, a lifting main substrate a32 which slides up and down is arranged on the machine frame a10, one side of the lifting main substrate a32 is in sliding fit with the machine frame a10 through a sliding rail or other sliding fit structures, a main substrate of a transmission chain a15 is arranged on the machine frame a10, an upper plate surface of the main substrate of the transmission chain a15 is used for supporting a lower chain transmission system, the chain transmission system can be sleeved on a lower mandrel through a bearing, one end of the mandrel is fixedly connected with the plate surface to realize the support of a main chain wheel a40 and a driven chain wheel a40, a fixed circular cover which is positioned at two sides of the chain wheel 152 can be sleeved on the mandrel, the diameter of the circular cover is larger than that of the chain wheel 152, one side of the circular cover facing the transmission chain a15 supports the upper end surface or the lower end surface of the main substrate 151, and a circular cover which is adjacent to the bottom plane of the traction pin a36 supports the traction pin a36, the main substrate of the transmission chain a15 can be provided with a lifting device, the lifting end of the lifting device is connected with the lifting main substrate a32, the lifting device can be a jack or a spiral lifter, in the embodiment, the spiral lifter is arranged on the bottom surface of the main substrate of the transmission chain a15, the lifting end of the lifter is connected with the lifting main substrate a32, the lifting of the lifting main substrate a32 can be facilitated through the lifter, and the position adjustment in the up-down direction is facilitated. The chain transmission system is supported on the lower end surface of the lifting main base plate a32, the chain sprocket 152 can be supported by a mandrel, and one end of the mandrel is fixedly connected with the bearing plate surface to realize the support of the driving sprocket a40 and the driven sprocket a 40; the lower swing arm transmission shaft a31 is supported on the upper end face of a lifting main base plate a32, the shaft axes of a swing arm middle seat a20, an upper swing arm transmission shaft a30 and a lower swing arm transmission shaft a31 are coplanar, the swing arm middle seat a20 can slide along the direction of the connecting line of an upper swing arm transmission shaft a30 and a lower swing arm transmission shaft a31, the length of the arm body of the adjusting swing arm a17 is adjustable, the structure can realize the production of the abdominal ribs with different height specifications of the truss steel bars, when the height of the truss steel bars needing to be produced is higher, the distance between the upper chain transmission system and the lower chain transmission system of the chain transmission system is increased, in the embodiment, the lifting of the upper chain transmission system of the chain transmission system is realized through a spiral lifter jacking lifter, the length of the arm body is adjusted or the adjusting arm of the longer arm body is replaced, so that the whole bending pin 161 can bend the abdominal ribs at the corresponding transmission chain a15 accessories, meanwhile, the height of the bent web rib is consistent with that of the adjacent towing pin a 36; in the whole adjusting process, no matter how much the height is adjusted, the motion synchronism of the upper swing arm transmission shaft a30 and the lower swing arm transmission shaft a31 is always kept unchanged, intermittent alternative bending operation can be always kept, in the adjusting process of the lifting main substrate a32, the swing arm middle seat a20 can be adjusted to a proper position in a self-adaptive mode without manual independent adjustment, and after the swing arm middle seat a20 is adjusted in a self-adaptive mode, the rotation amplitude and the rotation synchronism of the upper swing arm transmission shaft a30 and the lower swing arm transmission shaft a31 are high, and delay is avoided. In this embodiment, the back of the rack a10 is fixedly connected with a transmission mechanism mounting rack a50, the transmission mechanism mounting rack is provided with a long strip-shaped hole a51 with a long axis extending in the vertical direction, the swing arm middle seat a20 penetrates through the elongated hole a51, the swing arm middle seat a20 is in sliding fit with the elongated hole a51 in the long axis direction of the elongated hole, two axial ends of the swing arm middle seat a20 respectively extending out of the first through hole a37 are respectively hinged with the inner swing arm middle rod a21 and the outer swing arm middle rod a22 which are arranged in a staggered manner, the rear extending end of the lower swing arm transmission shaft a31 outgoing elongated hole a51 is connected with a lower swing arm power rod a18, the rear extending end of the upper swing arm transmission shaft a30 extending out of the elongated hole a51 is connected with an upper swing arm power rod a19, by adopting the structure, the elongated hole guides the swing arm middle seat a20, simultaneously, the upper swing arm transmission shaft a30 and the lower swing arm transmission shaft a31 are installed and positioned; certainly the surface of drive mechanism mounting bracket a50 sets up spout board a55, it has the interval to keep somewhere between the face of spout board a55 and the drive mechanism mounting bracket a50, spout board a55 both ends are connected fixedly through cushion and drive mechanism mounting bracket, set up on the spout board with swing arm middle base sliding fit's through-hole.
The utility model is not limited to the above embodiments, a positive rear vertical plate fixed in position relative to the axial direction of the sprocket 152 is disposed between the driving wheel a39 and the driven sprocket a40 of the chain transmission system, wherein an upper positive rear vertical plate fixedly connected to the frame a10 is disposed between the driving wheel a39 and the driven sprocket a40 of the chain transmission system, a pair of lower positive rear vertical plates fixedly connected to the frame a10 is disposed between the driving wheel a39 and the driven sprocket a40 of the lower chain transmission system, the positive rear vertical plate is disposed with a sliding groove a42 accommodating the tight edge of the transmission chain toward the tight edge of the transmission chain, the bending pin 161 extends out of the sliding groove a42, a main substrate of the transmission chain a15 is disposed on the frame a10, the lower chain transmission system is disposed on the upper end face of the main substrate of the transmission chain a15, the sliding groove a42 can axially support the transmission chain a15 along the driving sprocket 152, the chain wheel 152 is prevented from falling off when the transmission chain a15 is in heavy load, the lower side surface of the sliding groove a42 of the upper front vertical plate and the lower side surface of the main chain plate 151 of the upper transmission chain a15 transmission system are in sliding fit, and the upper side surface of the sliding groove a42 of the upper front vertical plate and the upper side surface of the main chain plate 151 of the lower transmission chain a15 transmission system are in sliding fit. Furthermore, a first transmission chain a15 pressing seat plate is fixed on the side surface of the lifting main substrate a32, a first pair of lateral chain pressing strips a46 is fixed on the lower extending end of the first transmission chain a15 pressing seat plate, the first pair of lateral chain pressing strips a46 extend in parallel relative to the upper transmission chain on the outer side of the tight side of the upper transmission chain, a guide groove a35 for facilitating the passing of a abdominal muscle is left between the first pair of lateral chain pressing strips a46 and the front section of the tight side of the transmission chain, a guide conical surface 481 is arranged on the front section of the first pair of lateral chain pressing strips a46 and is transited to the inner side surface of the lateral chain pressing strips, the guide conical surface 481 corresponds to the front section of the tight side of the adjacent transmission chain a15, a traction pin a36 on the tight side of the transmission chain a15 of the upper chain transmission system penetrates through the upper area of the guide groove a35, and the lower end surface of the front extending section of the traction pin a36 is in sliding fit with the side surface of the first pair of the lateral chain pressing strips a 46. The horizontal plate 321 of the lifting main substrate a32 is provided with a slideway support seat, the slideway support seat corresponds to the position end of the tight edge of the transmission chain a15 of the upper chain transmission system, the slideway support seat is provided with a stripping track a48 extending along the extension direction of the tight edge of the transmission chain, and the front section of the stripping track a48 is provided with a conical surface which is in transition with the outer side surface of the stripping track a 48.
The main substrate of the transmission chain a15 is provided with a second transmission chain a15 pressing seat plate corresponding to the first transmission chain a15 pressing seat plate, the downward extending end of the first transmission chain a15 pressing seat plate is fixedly provided with a second opposite chain pressing strip a34, the extending direction of the second opposite chain pressing strip a34 is consistent with the extending direction of the tight side of the lower transmission chain, a guide groove a35 convenient for the passage of a abdominal muscle is reserved between the second opposite chain pressing strip a34 and the front section of the tight side of the transmission chain, the width of the guide groove a35 is smaller than the outward extending width of the bending pin 161, the front section of the second opposite chain pressing strip a34 is provided with a guide conical surface 481 for transition to the inner side surface of the opposite chain pressing strip, a36 on the tight side of the transmission chain a15 of the lower chain transmission system penetrates through the area above the guide groove a35, and the upper end surface of the front extending section of the traction pin a36 is in sliding fit with the side surface of the first opposite chain pressing strip a 46. The main substrate of the transmission chain a15 is provided with a slide rail bracket seat, the bracket seat corresponds to the rear section area adjacent to the tight edge of the transmission chain a15, the slide rail bracket seat is provided with a stripping track a48 extending along the tight edge of the transmission chain, the front section of the stripping track a48 is provided with a conical surface which is in transition with the outer side surface of the stripping track a48, when a string rib is hung on the bending pin 161, the rib can be guided, the string rib moves in a guide groove a35, so that the string rib is always hung on the bending pin 161, the string rib can be reliably pulled, and meanwhile, when the string rib moves to the rear section of the tight edge, the conical surface of the stripping track a48 peels off the string rib hung on the bending pin 161, the string rib is peeled off on the bending pin 161, and the string rib can continuously move along a straight line conveniently.
The utility model is not limited to the above embodiment, at least one group of traction groups for pulling the chord ribs is arranged on the recoil main board 16, so that at least one steel bar can be pulled, three chord ribs of the truss steel bar are often pulled simultaneously in actual production, two groups of traction groups for pulling the chord ribs are arranged on the recoil main board 16, and two groups of traction groups can simultaneously pull two lower chord ribs 69, so that the production requirement of the steel bar truss can be met. In this embodiment, the rectangular fixing frame 43 may be disposed on the composite main board 16, the rectangular fixing frame 43 may be a fixing structure formed by splicing four sections, one side of the middle rectangular frame is fastened to the composite main board 16, a first traction group and a second traction group are disposed on a group of opposite sides in the frame of the rectangular fixing frame 43, the back of the mounting seat plate 32 of the traction seat of each traction group, the first traction seat 42 and the second traction seat 11 of the first traction seat 42 group are respectively located on one inner side edge of the frame of the rectangular fixing frame 43 and are connected and fixed to the inner wall of the rectangular fixing frame 43 through fasteners, and the third traction seat 17 and the fourth traction seat 22 of the second traction group are located on the other inner side edge of the rectangular fixing frame 43 and are fixed through fasteners; first traction seat 42, second traction seat 11, third traction seat 17, fourth traction seat 22 are the matrix distribution, and wherein first traction seat 42 and third traction seat 17 set up in opposite directions, and second traction seat 11 and fourth traction seat 22 set up in opposite directions, the other group of group edge of rectangular frame sets up the via hole that supplies lower chord rib 69 to pass. The lifting main base plate a32 is lifted through the longitudinal sliding fit of a longitudinally arranged sliding rail on the machine frame a10, a lifting device used for jacking the lifting main base plate a32 is arranged below the lifting main base plate a32, the lifting device can be a hydraulic cylinder, an air cylinder or a spiral lifter, in the embodiment, the lifting device is a spiral lifter, the lower end of the spiral lifter is fixed with the bottom of the machine frame a10, and the top end of an upwardly extending screw 56 of the spiral lifter is fixedly connected with the lifting main base plate a 32. The lifting main base plate a32 in longitudinal sliding fit can be suitable for steel bar trusses with different heights, and when the upper chord 68 needs to be lifted, the lifting main base plate a32 is adjusted to lift the height difference between the upper chord 68 and the lower chord 69. The upper edge of lift owner base plate a32 can set up mounting panel 70, go up mounting panel 70 through horizontal sliding fit upper muscle activity base plate 19 on the horizontal slide rail, it sets up a set of group of pulling on the muscle activity base plate 19 and is used for pulling last chord muscle 68, this group of pulling group can include fifth traction seat 57, sixth traction seat 58, and fifth traction seat 57, sixth traction seat 58 arrange on the extending direction of last chord muscle 68, and upper muscle activity base plate 19 level extends, and the central axis of fifth traction seat 57, the one-way bearing of sixth traction seat 58 vertically extends, and the installation bedplate 32 of fifth traction seat 57, sixth traction seat 58 passes through the fastener and fixes with the face of last muscle activity base plate 19. The front end part of the upper rib movable base plate 19 is in sliding fit with the recoil main plate 16 in the vertical direction, and the front end part of the upper rib movable base plate 19 and the recoil main plate 16 are limited in the extending direction of the upper chord rib 68; in this embodiment, the front end of the upper rib movable substrate 19 includes a substrate connecting shaft 61, the substrate connecting shaft 61 is arranged at the transverse end of the upper rib movable substrate 19, the connecting shaft is perpendicular to the extending direction of the string rib, the end of the substrate connecting shaft 61 is in sliding fit with a longitudinal groove 62 arranged on the re-advancing main board 16, the structure is adopted, when the re-advancing main board 16 moves, the substrate connecting shaft 61 is pulled through the longitudinal groove 62, then the traction on the upper rib movable substrate 19 is realized, the movement beat of the upper rib movable substrate 19 is the same as the movement beat of the re-advancing main board 16, and meanwhile, the upper rib movable substrate 19 can move up and down conveniently relative to the re-advancing main board 16. Each group of traction groups comprises two traction seats, wherein the first traction seat 42 and the second traction seat are arranged along the extension direction of one lower chord rib 69, the third traction seat 17 and the fourth traction seat 22 are arranged along the extension direction of the other chord rib, and the fifth traction seat 58 and the sixth traction seat 58 are arranged along the extension direction of the upper chord rib 68. Furthermore, a seventh traction seat 63 for stopping is arranged on the rack a10 corresponding to the first traction seat 42 on the reciprocating main board 16, a seventh traction seat 63 and an eighth traction seat 64 for stopping are arranged on the rack a10 corresponding to the second traction seat 11 on the reciprocating main board 16, mounting bottom plates of the seventh traction seat 63 and the eighth traction seat 64 are mounted on the board surface of the front board 46 through fasteners, wherein a lower chord rib 69 passes through a through hole of the front board 46 and then enters the seventh traction seat 63, and another lower chord rib 69 passes through a through hole of the front board 46 and then enters the eighth traction seat 64; a ninth traction seat 65 for stopping back is arranged on the lifting main substrate a32 corresponding to the traction group on the upper rib movable substrate 19; ninth traction seat 65 is fixed in the front of lift owner base plate a32 through last string muscle 68 stopping frame, go up string muscle 68 and pass the via hole on the front bezel 46 after, pass ninth traction seat 65, then get into the group of pulling on the muscle activity base plate 19, in whole operation process, when one-way bearing rotates, there is slight resistance during one-way bearing's rotation, the reinforcing bar that has appeared having been pulled is pulled backward by one-way gyro wheel easily, the reinforcing bar aversion, lead to the stride uneven, the setting is used for the traction seat of stopping, can be at the reentrant mainboard 16 or the lift mainboard withdrawal in-process, prevent that towed reinforcing bar from returning, guarantee to pull the back reinforcing bar and can not return, guarantee towed precision.
By adopting the scheme, when the chord rib continuous bending operation is carried out, the power of the motor is transmitted to the power flywheel a27 and the second speed reducer a29 through the first speed reducer a52, the lower swing arm power rod a18 swings, the second speed reducer a29 transmits partial power to the transmission shaft a14 through the commutator, the lower swing arm power rod a18 and the transmission shaft a14 move synchronously, the movement of the transmission chain a15 and the movement synchronism of the upper swing arm transmission shaft a30 and the lower swing arm transmission shaft a31 are always kept unchanged, the traction of the web rib of the transmission chain a15 and the bending of the web rib can be completed very implicitly, meanwhile, the structure still can meet the synchronism under the bending operation of different truss heights, the transmission mechanism and the power device of the whole system can be reduced, the swing amplitude and the swing speed of the inner swing arm middle rod a21, the outer swing arm middle rod a22 which are hinged and arranged in a staggered mode respectively at two axial ends of the swing arm middle seat a20 are synchronous, the power transmitted by the rod member then reaches the upper swing arm transmission rod a24, the motion of the upper swing arm transmission rod a24 is kept synchronous with the motion of the lower swing arm power rod a18, meanwhile, part of the power of the lower swing arm power rod a18 is transmitted to the upper swing arm transmission rod a24 through the lower inner swing arm relay rod a231, the inner swing arm middle rod a21 and the upper inner swing arm relay rod a232, and part of the power of the lower swing arm power rod a18 is transmitted to the upper swing arm transmission rod a24 through the lower outer swing arm relay, the outer swing arm middle rod a22 and the upper outer swing arm relay rod a 26. The rotation of the transmission shaft a14 enables the upper chain transmission system and the lower chain transmission system to synchronously rotate, the transmission chain a15 of the upper chain transmission system and the transmission chain a15 of the lower chain transmission system of the chain transmission system simultaneously move towards one direction, the moving speed is the linear speed of meshing teeth of the chain wheel 152, the outer side of the transmission chain a15 is fixedly connected with a traction pin a36 which plays a role in supporting and forming when a web rib is bent, the power transmission mechanism can alternately drive and adjust the swing arm a17 to swing, and the web rib of the bending pin 161 arranged on the adjustment swing arm a17 is bent into a wave shape along the directions of the traction pin a36 arranged on the upper chain transmission system of the chain transmission system and the traction pin a36 arranged on the lower chain transmission system. The straight web member reinforcing steel bars can be bent into wave-shaped web member reinforcing steel bars with fixed pitch for welding and forming a subsequent truss by uniform motion generated by the transmission chain a15 and rhythmical swing of the two adjusting swing arms a 17. By adopting the scheme, the two adjusting swing arms a17 have high motion synchronism, and when the node distance of the web member steel bar needs to be changed, the traction transmission chain a15 provided with the chain transmission system on the chain transmission system and the traction transmission chain a15 provided with the chain transmission system on the lower chain transmission system need to be replaced simultaneously. The bending forming speed of the web member reinforcing steel bar can be improved by increasing the rotating speed of the motor. Step-by-step swing arm 14 swings, step-by-step swing arm 14's free end pulls and holds in the palm pull rod 15 motion, hold in the palm pull rod 15 and pull the horizontal motion of reentry mainboard 16 and last muscle activity base plate 19, drive the traction seat motion of each traction group then, first one-way gyro wheel 12 and the one-way gyro wheel 13 of relative floating can remain the contact to the reinforcing bar by the centre gripping throughout, when forward motion, first one-way gyro wheel 12 and the one-way gyro wheel 13 of second can't rotate, the frictional force between one-way gyro wheel and reinforcing bar drives the reinforcing bar motion, when step-by-step swing arm backswing, hold in the palm pull rod 15 and reset, reentry mainboard 16 resets, the traction seat resets, one-way gyro wheel rotates this moment, the relative reinforcing bar of traction seat moves backward, realize the resetting of whole mechanism, get into next duty cycle. The power flywheel rotates to drive the main power pull arm and the swing arm connecting rod to move, then the stepping swing arm and the rocker arm section are cooperatively linked, in the whole motion mechanism, the stepping swing arm, the transmission shaft, the upper swing arm transmission shaft and the lower swing arm transmission shaft keep stable and reliable linkage effect at any time, by adopting the scheme, the motion mechanism is high in integration level, the traction motion of the chord tendon and the bending motion of the abdominal tendon and the synchronism of the abdominal tendon traction motion can be realized through the same power device, and planned automatic production can be realized.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is apparent that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The utility model provides a truss welds reinforcing bar bending device which characterized in that: the chain transmission device comprises a rack (a10), a double-swing-rod power linkage mechanism and a traction mechanism, wherein a chain transmission system and a lower chain transmission system are arranged on the rack (a10) and supported correspondingly on a chain transmission system, a traction pin (a36) is fixedly connected with the outer side of a transmission chain (a15) of the chain transmission system, the extending end of a transmission shaft (a14) arranged at the bottom of the rack (a10) and in transmission connection with a power device sequentially penetrates through driving sprockets (a16) of two chain transmission systems and is circumferentially fixed with the driving sprockets (a16),
the swing rod power linkage mechanism comprises an upper swing arm transmission shaft (a30) and a lower swing arm transmission shaft (a31) which are supported on a rack (a10) in parallel, two chain transmission systems are positioned between the upper swing arm transmission shaft (a30) and the lower swing arm transmission shaft (a31), the forward extending ends of the two swing arm transmission shafts are fixedly provided with an adjusting swing arm (a17), and the free end of the adjusting swing arm (a17) is provided with a bending pin (161),
the rear extension end of the lower swing arm transmission shaft (a31) is connected with a lower swing arm power rod (a18), the rear extension end of the upper swing arm transmission shaft (a30) is connected with an upper swing arm power rod (a19), two axial ends of a swing arm middle seat (a20) are respectively hinged with an inner swing arm middle rod (a21) and an outer swing arm middle rod (a22) which are arranged in a staggered mode, one end of the inner swing arm middle rod (a21) is hinged with one end of the lower inner swing arm relay rod (a231), the other end of the lower inner swing arm relay rod (a231) is hinged with a radial extension section of the lower swing arm power rod (a18), the other end of the inner swing arm middle rod (a21) is hinged with one end of the upper inner swing arm relay rod (a232), the other end of the upper inner swing arm relay rod (a232) is hinged with one end of the upper swing arm transmission rod (a24), one end of the outer swing arm middle rod (a22) is hinged with one end of the lower swing arm relay rod (a25), and the other end of the lower swing arm relay rod (a25) is hinged with the other end of the lower swing arm power rod (a18), the other end of the outer swing arm middle rod (a22) is hinged with one end of an upper outer swing arm relay rod (a26), the other end of the upper outer swing arm relay rod (a26) is hinged with the other end of an upper swing arm transmission rod (a24),
the traction mechanism comprises a main power large shaft (34) supported on a rack (a10), a main power swing arm (71) is circumferentially fixed at the rear extending end of the main power large shaft (34), the front end of the main power large shaft (34) is connected with a stepping swing arm (14), the extending free end of the stepping swing arm (14) is hinged with one end of a supporting rod (15), the other end of the supporting rod (15) is hinged with a re-advancing main plate (16) which is in sliding fit with the rack (a10), and at least one group of traction groups for traction string ribs is arranged on the re-advancing main plate (16); the traction group comprises at least one traction seat, the traction seat comprises an installation seat plate (32), the side surface of the installation seat plate (32) is supported with a first one-way roller (12) and a second one-way roller (13) which float relatively,
the free end of the main power swing arm (71) is hinged with a main power pull arm (72), the other end of the main power pull arm (72) is eccentrically hinged on a crank or a flywheel at the output end of the power device, one end of a swing arm connecting rod (a28) is eccentrically hinged on the crank or the flywheel at the output end of the power device, and the other end of the swing arm connecting rod (a28) is hinged with the free end of a swing arm section (181) arranged on a lower swing arm power rod (a 18).
2. The truss-welded steel bar bending device according to claim 1, wherein: the chain transmission system comprises a transmission chain (a15) and a chain wheel (152), wherein the transmission chain (a15) comprises a plurality of annularly arranged main chain plates (151), three co-circular meshing teeth (a) are arranged on the main chain plates (151), the meshing teeth (a) positioned at two ends of each main chain plate (151) are provided with end opening grooves (1512), two adjacent main chain plates (151) are connected through outer chain plates (a9), and two ends of each outer chain plate (a9) respectively extend into the adjacent end opening grooves (1512) and are hinged with the end opening grooves (1512); the outer circumference of sprocket (152) sets up annular grooving (1521) that is used for giving outer link plate (a9) abdication, annular grooving (1521) both sides set up respectively and engage flange portion (1522), mesh flange down, set up meshing tooth (a) and tooth's socket (b) on the outer circumference of going up meshing flange portion (1522), mesh flange portion down respectively in turn.
3. The truss-welded steel bar bending device according to claim 1, wherein: the lifting main base plate (a32) that slides from top to bottom is arranged on the rack (a10), a chain transmission system and an upper swing arm transmission shaft (a30) are supported on the lifting main base plate (a32), a swing arm middle seat (a20) which can slide in the connecting direction of the upper swing arm transmission shaft (a30) and a lower swing arm transmission shaft (a31) is arranged on the rack (a10), and the arm body length of the adjusting swing arm (a17) is adjustable.
4. The truss-welded steel bar bending device according to claim 3, wherein: the back of the frame (a10) is fixedly connected with a transmission mechanism mounting rack (a50), a long strip-shaped hole (a51) with a long shaft extending in the vertical direction is arranged on the transmission mechanism mounting rack (a50), the swing arm middle seat (a20) penetrates through the elongated hole (a51), the circumference of the swing arm middle seat (a20) is limited with the circumference of the elongated hole, the swing arm middle seat (a20) is in sliding fit with the elongated hole (a51) in the long axis direction of the elongated hole, two axial ends of the swing arm middle seat (a20) respectively extending out of the first through hole (a37) are respectively hinged with an inner swing arm middle rod (a21) and an outer swing arm middle rod (a22) which are arranged in a staggered way, the rear extending end of the lower swing arm transmission shaft (a31) extending out of the elongated hole (a51) is connected with a lower swing arm power rod (a18), the rear extending end of the upper swing arm transmission shaft (a30) extending out of the elongated hole (a51) is connected with an upper swing arm power rod (a 19).
5. The truss-welded steel bar bending device according to claim 3, wherein: the lifting main substrate (a32) is transversely matched with the upper rib movable substrate (19) in a sliding manner, the front end part of the upper rib movable substrate (19) is matched with the re-advancing main board (16) in a sliding manner in the vertical direction, the front end part of the upper rib movable substrate (19) is limited in the extending direction of the chord rib with the re-advancing main board (16), and at least one group of traction group is arranged on the upper rib movable substrate (19).
6. The truss-welded steel bar bending device according to claim 1, wherein:
the stepping swing arm (14) comprises a main shaft sliding plate (143), one side of the main shaft sliding plate (143) is fixedly connected with a main power large shaft (34), the main power large shaft (34) is supported on a rack (a10) through a bearing, a radial sliding hole (142) is formed in the other side of the main shaft sliding plate (143), a telescopic inner arm rod (145) is in sliding fit in the radial sliding hole (142), the radial sliding hole (142) is circumferentially limited with a telescopic inner wall, the extending end, extending out of a sliding strip hole, of the telescopic inner arm rod (145) is hinged to one end of a supporting pull rod (15), a threaded hole extending in the radial direction is formed in the other end of the telescopic inner arm rod (145), a rotary power device is arranged at the tail of the main shaft sliding plate (143), and a screw rod section of a power output end of the rotary power device is in threaded fit with the threaded hole.
7. The truss-welded steel bar bending device according to claim 1, wherein: the power device can comprise a first speed reducer (a52), wherein the input end of the first speed reducer (a52) is fixedly connected with the output end of the motor, one output shaft of the first speed reducer (a52) is fixedly connected with a power flywheel (a27), the other output end of the first speed reducer (a52) is in transmission connection with the input end of a second speed reducer (a29), the output end of the second speed reducer (a29) is in transmission connection with a gear reverser, and the output end of the gear reverser circumferentially fixes a transmission shaft (a 14).
8. The truss-welded steel bar bending device according to claim 3, wherein: each group of traction groups on the frame (a10) corresponding to the reciprocating main board (16) is provided with a traction seat for stopping back; and a traction seat for stopping is arranged on the lifting main base plate (a32) corresponding to each group of traction groups on the upper rib movable base plate (19).
9. The truss-welded steel bar bending device according to claim 1, wherein: the side of installation bedplate (32) is connected fixed lower shaft fixed block (30), and the side of lower shaft fixed block (30) supports first bearing axle (123), first bearing axle (123) supports first one-way bearing (121), first one-way bearing (121) overcoat first rolling circle (122), slide rail cooperation upper shaft fixed block (24) is passed through to the side of installation bedplate (32), upper shaft fixed block (24) are located the top of lower shaft fixed block (30), the side support second one-way bearing (131) of upper shaft fixed block (24), rotatable second one-way bearing (131) of upper bearing on second one-way bearing (131), second one-way bearing (131) overcoat second rolling circle (132), the upper end of installation bedplate (32) sets up side baffle (25) of lateral extension, set up adjusting bolt (26) on side baffle (25), and a compression elastic element (27) is fixed on the lower extending end of the adjusting bolt (26) extending out of the side baffle (25), and the end part of the compression elastic element (27) abuts against the upper shaft positioning block.
10. The truss-welded steel bar bending device according to claim 6, wherein: a rear vertical plate which is fixed relative to the axial position of the chain wheel (152) is arranged between the driving wheel (a39) and the driven chain wheel (a40) of the chain transmission system, and a sliding groove (a42) for accommodating the tight edge of the transmission chain is arranged on one side of the rear vertical plate facing the tight edge of the transmission chain.
CN202120501805.XU 2021-03-09 2021-03-09 Truss welding steel bar bending device Active CN216096103U (en)

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Application Number Priority Date Filing Date Title
CN202120501805.XU CN216096103U (en) 2021-03-09 2021-03-09 Truss welding steel bar bending device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120501805.XU CN216096103U (en) 2021-03-09 2021-03-09 Truss welding steel bar bending device

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Publication Number Publication Date
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Family Applications (1)

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Country Link
CN (1) CN216096103U (en)

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