CN113172182B

CN113172182B - Reinforcing cage production process of reinforced precast pile

Info

Publication number: CN113172182B
Application number: CN202110391569.5A
Authority: CN
Inventors: 杨余明; 马进元; 陈浩; 安雄飞; 徐莉娜
Original assignee: Jianhua Construction Materials China Co Ltd; Jiangsu Jianhua New Wall Material Co Ltd; Tangshi Jianhua Construction Materials Shanghai Co Ltd
Current assignee: Jianhua Construction Materials China Co Ltd; Jiangsu Jianhua New Wall Material Co Ltd; Tangshi Jianhua Construction Materials Shanghai Co Ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2023-06-02
Anticipated expiration: 2041-04-12
Also published as: CN113172182A

Abstract

The invention relates to a reinforcement cage production process of an enhanced precast pile. A reinforcement cage production process of an enhanced precast pile comprises the following steps: pulling a plurality of steel bars to pass through the head end plate and the tensioning head plate which are assembled in advance, upsetting the head ends of the steel bars, and then anchoring the steel bars on the head end plate; connecting the tension head plate with a traction mechanism of a seam welder, performing seam welding processing of a ring reinforcement around the reinforcement by the seam welder, and automatically cutting off the reinforcement of the reinforcement cage when the seam welding is performed to a required length; separating the tensioning head plate from the traction mechanism; the cut steel bars after the rolling welding pass through the end plate and the tensioning tail plate at the tail end of the preassembled steel bar cage, and the tail ends of the steel bars are anchored on the ends of the tail ends after heading; and placing the assembled reinforcement cage into a precast pile die for tensioning. The production efficiency of the reinforcement cage can be improved by at least 1 time, and even can be improved by 2 times. The condition that the quality of the steel reinforcement cage is unstable due to uneven arrangement of main reinforcements in the traditional steel reinforcement cage production process is avoided.

Description

Reinforcing cage production process of reinforced precast pile

Technical Field

The invention relates to the technical field of pipe pile production, in particular to a reinforcement cage production process of an enhanced precast pile.

Background

At present, cage bars of the domestic tubular piles are commonly formed by rolling welding pre-heading main bars into a steel bar cage and then assembling the steel bar cage with an end plate. The prior prefabricated pipe pile reinforcement cage is produced by the following steps: cutting the steel bars according to the length of the tubular pile in advance, upsetting the two ends of the cut steel bars, performing roll welding after upsetting, respectively installing end plates of the head end and the tail end after roll welding, and respectively connecting the end plates of the head end and the tail end with a tensioning head plate and a tensioning tail plate. The existing production process has the following problems: (1) The original feeding mode adopts a traditional single-layer mechanical feeding disc, so that the space utilization rate is low, the feeding efficiency is low, the feeding synchronism of a plurality of reinforcing steel bars is poor, upsetting is respectively carried out after the reinforcing steel bars are cut off one by one in advance, and then the feeding and the bar penetrating are respectively carried out one by one, so that the production time is long. (2) Because of seam welder precision error, the main muscle interval is not the equipartition completely, when leading to the installation end plate, and the main muscle can not rotate simultaneously in the terminal plate hole in place, and most circumstances main muscle can be through waist shape hole cluster moving the position of stretch-draw screw, blocks stretch-draw bolt's mounted position, causes the steel reinforcement cage main muscle error of arranging. The steel reinforcement cage is large in deformation after the rolling welding is finished, no relatively stable and reliable standard exists, and no reliable automatic equipment is used for completing the assembly work of the cage bars, the end plates and the head-tail plates. When the head and tail plates are further installed, workers need to pry the main reinforcement which is not completely in place to the preset counter bore position, and screw bolts into screw holes of the end plates, so that the reinforcement cage, the end plates and the head and tail plates are combined into a set of stable combination body. (3) The rolling welding error causes the arrangement error of the main ribs of the cage ribs, so that the installation difficulty of the subsequent end plates and the head and tail plates is extremely high, the weight of the end plates and the head and tail plates is between 20 and 35 kg, and the working labor intensity is extremely high; 4-5 people are required to work simultaneously when installing the end plates and the head and tail plates on the reinforcement cage, and the labor consumption is high.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a production process of a reinforcement cage of an enhanced precast pile, wherein a plurality of reinforcements are fed, penetrated, upset, roll welded and cut at the same time in the production process, so that the production efficiency and the product quality are improved. Based on the purpose, the invention adopts the following technical scheme:

the reinforcement cage production process of the reinforced precast pile is characterized by comprising the following steps of:

preassembling an end plate and a tensioning head plate at the head end of the reinforcement cage; preassembling an end plate and a tensioning tail plate at the tail end of the reinforcement cage;

placing a plurality of steel bars in a multi-layer steel bar blanking disc, and pulling the plurality of steel bars to pass through a steel bar penetrating disc of a seam welder and then pass through a steel bar penetrating hole of an end plate at the head end and a tensioning head plate;

step (2), a plurality of reinforcing steel bars penetrate through the assembled head end plate and the tensioning head plate at the same time, and the head ends of the reinforcing steel bars are anchored on the head end plate after upsetting;

step (3), connecting the tensioning head plate with a traction mechanism of a seam welder, performing seam welding processing of ring ribs around the steel bars by the seam welder, and automatically cutting off the steel bars of the steel bar cage by cutting equipment when the steel bar cage is seam welded to a required length;

step (4), separating the tensioning head plate from the traction mechanism;

step (5), the cut steel bars after the rolling welding pass through an end plate and a tensioning tail plate at the tail end of the assembled steel bar cage, and the tail ends of the steel bars are anchored on the end plate at the tail end after upsetting;

and (6) placing the assembled reinforcement cage into a precast pile die for tensioning, wherein during tensioning, the tail plate and the tail end plate are fixed in position, the head plate and the head end plate move relative to one end far away from the tail plate, upsets at two ends of the reinforcement are firmly clamped in reinforcement anchoring holes of the head end plate and the tail end plate respectively, and meanwhile the reinforcement is stretched to the required length. The end plate and the tensioning head plate of the head end are assembled in advance, so that the end plate and the tensioning head plate of the head end correspond to each other, the end plate and the tensioning head plate of the head end are used as a whole when the tendon is penetrated, the end plate and the tensioning tail plate of the tail end correspond to each other, and the end plate and the tensioning tail plate of the tail end are used as a whole, so that the tendon is conveniently penetrated. A plurality of steel bars in the multi-layer steel bar blanking disc penetrate into the steel bar penetrating disc at the same time and then penetrate into the combination of the head end plate and the tensioning head plate, head end upsetting is carried out, each steel bar after upsetting is clamped in a steel bar anchoring hole, the steel bars are positioned, displacement of the steel bars in the roll welding process is avoided, and uneven distribution of the steel bars in the radial direction is caused. And after the roll welding is finished, cutting off the plurality of reinforcing steel bars at the same time. And then the assembled pre-assembled tail end plate and the tensioning tail plate are arranged at the tail end of the roll-welded reinforcement cage, and the tail end of the reinforcement is upset, so that the reinforcement penetrating time and the cutting time are saved.

Further, when the process is used for producing a tubular pile with ferrules, after the end of the step (5), the ferrules of the head end and the tail end are respectively sleeved on the end plate of the head end and the end plate of the tail end, and then the step is performed. And the hoops are arranged after the rolling welding of the reinforcement cage is finished, no interference of the hoops exists during the rolling welding, and the normal rolling welding of a plurality of rings of ring ribs at the initial section and the tail section of the rolling welder is facilitated.

Further, a plurality of steel bar anchoring holes and tensioning screw holes are formed in the end plate of the head end, a clamping table is arranged on the outer ring of the end plate of the head end, the hoops are clamped on the clamping table, and one surface of a large opening of the steel bar anchoring hole of the end plate of the head end is contacted with the tensioning head plate; the end plate of the tail end and the end plate of the head end have the same structure; one surface of the large opening of the steel bar anchoring hole of the tail end plate is contacted with the tensioning tail plate. The end plate is provided with a clamping table, so that the hoop is clamped on the end plate conveniently.

Further, the tensioning head plate is provided with a head plate steel bar penetrating hole and a head plate tensioning screw hole, and the positions of the head plate steel bar penetrating hole and the head plate tensioning screw hole correspond to the positions of the steel bar anchoring hole and the tensioning screw hole on the head end plate; the tensioning tail plate is provided with a tail plate steel bar penetrating hole and a tail plate tensioning screw hole, the positions of the tail plate steel bar penetrating hole and the tail plate tensioning screw hole correspond to the steel bar anchoring hole and the tensioning screw hole on the tail end plate, and a circular through hole is formed in the middle of the tensioning tail plate. The circular through hole in the middle of the tensioning tail plate is convenient for pouring out residual slurry of the tubular pile.

Further, the end plate of the head end comprises an end plate body, wherein the end plate body is provided with a steel bar anchoring hole and a tensioning screw hole, and the steel bar anchoring hole and the tensioning screw hole are integrally or separately arranged.

Further, when the steel bar anchoring hole and the tensioning screw hole are integrally formed, and when the tensioning screw hole and the steel bar anchoring hole are coaxially formed, the tensioning screw hole is located on the outer side of the steel bar anchoring hole, and when the tensioning screw hole and the steel bar anchoring hole are not coaxially formed, the tensioning screw hole and the steel bar anchoring hole are connected through a bar passing groove.

Further, the outer diameter of the tensioning head plate is smaller than the outer diameter of the head end plate, and the outer diameter of the tensioning tail plate is smaller than the outer diameter of the tail end plate. The outer diameter of the tensioning head plate is smaller than that of the head end plate, the hoops are convenient to clamp on the end plate from outside to inside, and similarly, the outer diameter of the tensioning tail plate is smaller than that of the tail end plate.

Further, in the step, when the reinforcing steel bar passes through the head end plate, the direction of the reinforcing steel bar passing through the reinforcing steel bar anchoring hole is from the small opening to the large opening.

Further, when the head end and the tail end of the steel bars are subjected to heading processing, a plurality of steel bars can be subjected to heading simultaneously, and the steel bars can also be subjected to heading respectively.

Further, when a plurality of steel bars are simultaneously upsetted, the plurality of steel bars are simultaneously clamped in the clamp, a plurality of small hammerheads are respectively aligned with each steel bar for upsetting, and one large hammerhead can be adopted for simultaneous integral upsetting.

Further, when upsetting each steel bar respectively, upsetting is firstly carried out on a first steel bar, and after upsetting, the steel bar cage is clamped by the rotating equipment to rotate for an angle, so that upsetting can be carried out on a next steel bar.

Further, in the step (2), after the upsetting process is completed, the tensioning head plate and the head end plate are pulled towards the head end of the steel bar until the upsetting heads of all the steel bars are clamped in the steel bar anchoring holes of the end plate of the head end.

Further, the multi-layer steel bar blanking disc in the step (1) is automatic rotatable multi-layer steel bar synchronous feeding equipment, and the equipment comprises an equipment rack, a material disc rotating device and a material disc; the equipment rack comprises a main shaft and a guide rail, the material tray rotating device comprises a rotating platform, the rotating platform comprises multiple layers from top to bottom, the height of the guide rail is matched with that of the rotating platform, the material feeding tray is placed on the rotating platform, one end of the rotating platform is connected with the main shaft and can rotate by taking the main shaft as a circle center, the other end of the rotating platform is provided with a guide rail wheel, and the guide rail wheel moves back and forth along the guide rail, so that the rotating platform drives the material feeding tray to rotate randomly on the guide rail. The number of the rotary platforms is determined according to the number of the main reinforcements of the reinforcement cage.

Further, the cutting equipment in the step (3) is an automatic cutting device, and the automatic cutting device comprises a main machine seat, a lifting bottom plate and a lifting assembly; the lifting bottom plate is connected with the main machine base through the lifting assembly, the cutting assembly is arranged on the lifting bottom plate, and the cutting assembly is used for cutting the reinforcement cage.

Further, the ferrule is of a hollow cylindrical structure, a clamping ring of an inner buckle is arranged at one end, connected with the end plate, of the ferrule, and the other end of the ferrule is of an enlarged horn mouth shape; the retainer ring of the inner buckle is buckled on the end plate.

The beneficial effects of the invention are as follows:

(1) The original feeding mode needs to pre-cut the steel bars one by one, respectively upsetting the steel bars, then respectively feeding and penetrating the steel bars one by one, and the production time is long, while the feeding process can save at least 75% of time only when feeding a plurality of steel bars at the same time, and the cutting process can save at least 50% of time when the rolling welding of the steel bar cage is finished; meanwhile, the feeding, cutting, roll welding and installing the end plates are continuously completed, so that the time for transferring after the upsetting is cut respectively before is saved, and the production efficiency of the reinforcement cage can be improved by at least 1 time and even 2 times by the process method. Indirectly improves the production efficiency and reduces the production cost of the product.

(2) According to the invention, one end of the end plate is firstly installed, and then the rolling welding production process is carried out, so that the main reinforcement is ensured to be uniformly distributed in the circumferential direction, the stirrups form a positioning and fixing effect on the main reinforcement after the rolling welding, the positions of the main reinforcement in the reinforcement anchoring holes of the end plate are relatively fixed, and the situation that the quality of the reinforcement cage is unstable due to uneven distribution of the main reinforcement in the traditional reinforcement cage production process is avoided.

(3) Because the tensioning head plate and the head end plate are assembled together in advance, the tensioning tail plate and the tail end plate are assembled together, the problem that a worker needs to skid an incompletely-in-place main rib to a preset counter bore position when installing the head and tail plate in the traditional process is avoided, bolts can be screwed into screw holes of the end plates, and the working time is saved.

(4) The invention overcomes the roll welding error in the traditional process, is convenient and simple to install the head and tail plates, and ensures the safety of the operation of workers.

Description of the drawings:

FIG. 1 is a flow chart of a method according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of the present invention;

FIG. 3 is a schematic view of a head end plate according to a first embodiment of the present invention;

fig. 4 is a schematic structural view of a first embodiment of the automatic rotatable multi-layer synchronous reinforcing steel bar feeding apparatus according to the present invention;

FIG. 5 is a schematic view of an automatic cutting device according to a first embodiment of the present invention;

FIG. 6 is a flow chart of a method according to a second embodiment of the invention;

FIG. 7 is a schematic illustration of a ferrule configuration;

fig. 8 is a schematic view of the assembly of the ferrule and the reinforcement cage;

fig. 9 is a schematic diagram of the finished product after the ferrule and the reinforcement cage are assembled;

fig. 10 is an enlarged view of the end of the finished ferrule and reinforcement cage after assembly;

fig. 11a is a schematic view of a head end plate according to a third embodiment of the present invention 1;

FIG. 11b is a cross-sectional view taken along the direction A of FIG. 11 a;

fig. 12a is a schematic view of a head end plate according to a third embodiment of the invention 2;

FIG. 12B is a cross-sectional view taken along the direction B of FIG. 12 a;

FIG. 13a is a schematic view of a tail end plate according to a third embodiment of the present invention shown in FIG. 1;

FIG. 13b is a cross-sectional view taken along direction C of FIG. 13 a;

FIG. 14a is a schematic view of a trailing end plate according to a third embodiment of the invention in FIG. 2;

FIG. 14b is a D-direction cross-sectional view of FIG. 14 a;

FIG. 15a is a schematic view of a structure of a tension head plate;

FIG. 15b is a cross-sectional E-view of FIG. 15 a;

FIG. 15c is a cross-sectional view F of FIG. 15 a;

FIG. 16a is a schematic view of a tensioning tail;

FIG. 16b is an M-direction cross-sectional view of FIG. 16 a;

FIG. 16c is an L-section view of FIG. 16 a;

FIG. 17a is a schematic view of a third embodiment of a combination tension head plate and head end plate of the present invention 1;

FIG. 17b is a G-direction cross-sectional view of FIG. 17 a;

FIG. 17c is an H-section view of FIG. 17 a;

fig. 18a is a schematic view of a third embodiment of a combination of a tension head plate and a head end plate according to the present invention 2;

FIG. 18b is a J-directed cross-sectional view of FIG. 18 a;

FIG. 18c is a cross-sectional view in the K-direction of FIG. 18 a;

fig. 19 is a schematic view of a head end penetrating-heading-steel bar anchoring flow chart 1;

fig. 20 is a schematic view of a flow chart of head end bar threading, heading and bar anchoring 2;

fig. 21 is a schematic view of a cut reinforcement cage;

FIG. 22a is a schematic view of a third embodiment of a tension tail plate and tail end plate combination according to the present invention 1;

FIG. 22b is an N-directional cross-sectional view of FIG. 22 a;

FIG. 22c is a P-direction cross-sectional view of FIG. 22 a;

FIG. 23a is a schematic view of a third embodiment of a tension tail plate and tail end plate combination according to the present invention shown in FIG. 2;

FIG. 23b is a Q-direction cross-sectional view of FIG. 23 a;

FIG. 23c is a cross-sectional view in the R direction of FIG. 23 a;

fig. 24 is a schematic view of a process flow of tail end bar threading, heading and bar anchoring 1;

in the figure, the end plate of the 1-head end, the 11-steel bar anchoring hole, the 12-stretching screw hole, the 13-clamping table, the 14-bar passing groove, the 2-stretching head plate, the 21-head plate steel bar penetrating hole, the 22-head plate stretching screw hole, the end plate of the 3-tail end, the 4-stretching tail plate, the 41-tail plate steel bar penetrating hole, the 42-tail plate stretching screw hole, the 43-round through hole, the 5-traction mechanism, the 6-hoop, the 61-inner buckle collar, the 7-rotatable multi-layer steel bar synchronous feeding device, the 71-device frame, the 711-main shaft, the 712-guide rail, the 72-material disc rotating device, the 721-rotating platform, the 722-guide rail wheel, the 73-feeding disc, the 8-automatic cutting device, the 81-main frame, the 82-lifting bottom plate, the 83-lifting assembly, the 84-cutting assembly and the 9-steel bar.

Detailed Description

Example 1

As shown in fig. 1 and 2, a reinforcement cage production process for an enhanced precast pile is provided, and in this embodiment, the precast pile is produced as a pile without hoops. This embodiment includes the following steps:

an end plate 1 and a tensioning head plate 2 at the head end of the reinforcement cage are assembled in advance; when the end plate 1 of the head end and the tensioning head plate are assembled, the steel bar anchoring holes 11 and the tensioning screw holes 12 on the end plate 1 of the head end are respectively corresponding to the head plate steel bar penetrating holes 21 on the tensioning head plate 2 and the tensioning screw holes of the head plate, so that the steel bar penetrating and tensioning in the subsequent steps are facilitated.

An end plate 3 and a tensioning tail plate 4 at the tail end of the reinforcement cage are preassembled; the assembly process of the end plate 3 at the tail end and the tensioning tail plate 4 is finished before the step (5), and the assembly can be performed in the processes of tendon penetration and roll welding. Similarly, the assembly of the end plate 3 and the tensioning tail plate 4 at the tail end also follows the rule of hole site correspondence, and the tail plate steel bar penetrating hole 41 and the tail plate tensioning screw hole 42 respectively correspond to the steel bar anchoring hole and the tensioning screw hole on the tail end plate 3.

Placing a plurality of steel bars in a multi-layer steel bar blanking disc, and pulling the plurality of steel bars to pass through a steel bar penetrating disc of a seam welder and then pass through steel bar penetrating holes of an end plate 1 and a tensioning head plate 2 at the head end; a reinforcing steel bar anchoring hole of the end plate 1 of the head end and a head plate on the tensioning head plate;

step (2), a plurality of reinforcing steel bars 9 simultaneously pass through the assembled head end plate 1 and the tensioning head plate 2, and the head ends of the reinforcing steel bars are anchored on the head end plate after upsetting;

step (3), connecting the tensioning head plate 2 with a traction mechanism 5 of a seam welder, performing seam welding processing of ring ribs around the steel bars by the seam welder, and automatically cutting off the steel bars of the steel bar cage by cutting equipment when the steel bar cage is seam welded to a required length;

step (4), separating the tensioning head plate from the traction mechanism 5;

step (5), the cut steel bars after the rolling welding pass through the end plate 3 and the tensioning tail plate 4 at the tail end of the assembled steel bar cage, and the tail ends of the steel bars are anchored on the end plate 3 at the tail end after upsetting;

and (6) placing the assembled reinforcement cage into a precast pile die for tensioning, wherein during tensioning, the tail plate and the tail end plate are fixed in position, the head plate and the head end plate move relative to one end far away from the tail plate, upsets at two ends of the reinforcement are firmly clamped in reinforcement anchoring holes of the head end plate and the tail end plate respectively, and meanwhile the reinforcement is stretched to the required length. Specifically, when the head end plate and the head plate are assembled at the time of assembly, one surface of the large mouth of the steel bar anchoring hole 11 of the head end plate is in contact with the tensioning head plate 2; the end plate 3 at the tail end and the end plate 1 at the head end have the same structure; one surface of the large opening of the steel bar anchoring hole of the tail end plate is contacted with the tensioning tail plate 4. When the steel bar 9 passes through the head end plate, the direction of the steel bar passing through the steel bar anchoring hole 11 is from the small opening to the large opening. Specifically, the middle of the tensioning tail 4 is provided with a circular through hole 43. And when the precast pile is produced, pouring residual slurry.

Specifically, as shown in fig. 3, the end plate of the head end comprises an end plate body, wherein a steel bar anchoring hole 11 and a tensioning screw hole 12 are formed in the end plate body, and the steel bar anchoring hole 11 and the tensioning screw hole 12 are connected through a steel bar passing groove 13.

Specifically, in the step (2), after the upsetting process is completed, the tensioning head plate 2 and the head end plate 1 are pulled towards the head end of the steel bar until the upsetting heads of all the steel bars are clamped in the end plate steel bar anchoring holes 11 of the head end.

Specifically, as shown in fig. 4, the multi-layer steel bar blanking disc in the step (1) is an automatic rotatable multi-layer steel bar synchronous feeding device 7, which comprises a device frame 71, a tray rotating device 72 and a feeding tray 73; the equipment rack 71 comprises a main shaft 711 and a guide rail 712, the tray rotating device 72 comprises a rotating platform 721, the rotating platform 721 comprises multiple layers from top to bottom, the height of the guide rail 712 is matched with that of the rotating platform 721, the feeding tray 73 is placed on the rotating platform 721, one end of the rotating platform 721 is connected with the main shaft 711 and can rotate by taking the main shaft 711 as a circle center, the other end of the rotating platform 721 is provided with a guide rail wheel 722, and the guide rail wheel 722 moves back and forth along the guide rail 712, so that the rotating platform 721 drives the feeding tray 73 to rotate on the guide rail 712 at will. Wherein, the equipment rack adopts a vertical structure and can be divided into a plurality of layers according to the requirements of actual production processes. The feeding tray 73 comprises an inner ring and an outer ring; a plurality of inner ring vertical rolls are uniformly distributed on the inner ring along the circumference of the inner ring; the outer ring is uniformly provided with a plurality of outer ring vertical rolls along the circumference of the outer ring, and the bottom between the inner ring and the outer ring is uniformly provided with a plurality of horizontal rolls; the steel bar material tray is placed in an annular space surrounded by the inner ring and the outer ring, and when external force is applied to drag the steel bars, the inner ring vertical roller, the horizontal roller and the outer ring vertical roller rotate, so that the steel bar material tray can rotate in the feeding tray.

The rotating platform rotating shaft is sleeved on the main shaft 711 and can rotate relative to the main shaft 711; the motor drives the guide rail wheel to roll back and forth along the guide rail, that is, the rotary platform 721 drives the feeding disc 73 to do circular motion with the main shaft 711 as the center of a circle. When the crane needs to put the steel bar hanging piles into the feeding disc 73, in order to prevent the rotary platform and the feeding disc at the upper layer from blocking the rotary platform and the feeding disc at the lower layer, the steel bars cannot be put into the feeding disc, and the rotary platform at the upper layer is rotated, so that the rotary platform and the feeding disc at the lower layer are completely exposed.

The bottom of the rotating platform 721 is also provided with a steel bar material tray self-locking device, the steel bar material tray self-locking device comprises an air cylinder support and an air cylinder, the air cylinder support is arranged at the bottom of the rotating platform 721, the air cylinder is detachably arranged on the air cylinder support and can be detachably replaced, and the air cylinder extends upwards to prop against the steel bar material tray. When the steel bar material tray is released, the rotation cannot be stopped in time due to the inertia effect, and when the steel bar material tray is required to stop rotating, the air cylinder is ejected to prop against the steel bar material tray, so that the braking effect is achieved, and the self-locking of the steel bar material tray is realized.

The same external force is applied to the reinforcing steel bar material trays of each layer, so that the multilayer synchronous discharging of the reinforcing steel bars can be realized. The feeding tray for loading the steel bar trays is hoisted and placed on the rotary platform from the upper part through the crane, and is hoisted and placed layer by layer through the rotary platform 721 from top to bottom. The rotating platform 721 drives the material tray to rotate at any angle between 1 and 330 degrees along the guide rail, and changes the material tray according to production requirements, so that flexible automation of the feeding equipment is realized.

In the step (2), when the head of the steel bar is upset, after the automatic upsetting device at the head of the steel bar cage clamps the steel bar cage, the head end of each steel bar is upset, every time one steel bar is upset, the rotating device removes the steel bar with the upset inside the upsetting machine, and meanwhile, the steel bar which is not upset is moved to the upsetting station to be upset (taking a tubular pile steel bar cage as an example, because the steel bars are distributed on a circumference, the rotating device clamps the steel bar cage to rotate by an angle every time the upsetting is completed); after the upsetting is finished, the head end of each reinforcing steel bar forms an expanded conical cap structure or a upsetting head of a T-shaped structure; because the lengths of the batch of reinforcing steel bars are consistent, after the reinforcing steel bars after upsetting are straightened, the end faces of the head ends of all the reinforcing steel bars are on the same plane. After the upsetting processing is completed, the head plate and the end plate without the reinforcement groove at the head end are pulled to the head end of the reinforcement until the upsetting of all reinforcement is clamped in the reinforcement anchoring hole of the end plate without the reinforcement groove at the head end.

In the step (3), the tensioning head plate and the end plate without the reinforcement groove at the head end are fixed on a traction trolley of a seam welder, and the seam welding operation of the reinforcement cages is started, namely, the ring reinforcement of the reinforcement cages is welded on the outer ring of each reinforcement cage in a surrounding mode.

In the step (5), after the automatic upsetting device at the tail end of the reinforcement cage clamps the reinforcement cage, upsetting the end part of each reinforcement at the tail end of the reinforcement cage, removing the reinforcement with the upsetting in the upsetting machine by the automatic upsetting device every time one reinforcement is upsetted, and simultaneously moving the reinforcement which is not upsetted to the upsetting station to upsetting (taking a tubular pile reinforcement cage as an example, because the reinforcement is distributed on a circumference, every time the upsetting, the reinforcement cage is clamped by the rotating device to rotate by an angle); after the upsetting is finished, the end part of each reinforcing steel bar forms an expanding conical cap-shaped structure or a upsetting head of a T-shaped structure; because the lengths of the batch of reinforcing steel bars are consistent, after the reinforcing steel bars after upsetting are straightened, the end faces of all the reinforcing steel bar ends are on the same plane.

Specifically, as shown in fig. 5, the cutting device in step (6) is an automatic cutting device 8, and the automatic cutting device 8 includes a main stand 81, a lifting base 82, and a lifting assembly 83; the lifting bottom plate 82 is connected with the main frame 81 through a lifting assembly 83, a cutting assembly 84 is arranged on the lifting bottom plate 82, and the cutting assembly 84 is used for cutting the reinforcement cage.

The cutting assembly 84 includes a drive wheel 841, at least two guide wheels 842 and a wire saw 843, the wire saw 843 encircling the drive wheel 841 and the guide wheels 842, a length of the wire saw 843 between two adjacent guide wheels 842 being greater than a transverse maximum width of a cross section of the reinforcement cage to effect a wire saw cut segment of the reinforcement cage.

The lifting assembly 83 comprises a lifting cylinder, a guide rail arranged on the main frame 81 and a sliding block arranged on the lifting bottom plate 82, and the guide rail is in sliding connection with the sliding block; during cutting, the lifting cylinder drives the rope saw cutting section between two adjacent guide wheels to move up and down relative to the reinforcement cage, and the stroke of the lifting cylinder moving up and down is greater than the maximum width of the reinforcement cage in the vertical direction of the cross section.

When the wire saw 843 is first tangent to the cross-section of the reinforcement cage, the wire saw 843 begins to cut the reinforcement cage until the wire saw 843 passes through and is separated from the cross-section of the reinforcement cage, and the reinforcement cage is fully severed along the cross-section.

Specifically, in the step (6), after the upsetting process is completed, the tensioning tail plate and the tail end plate are clamped to the tail end of the reinforcement cage until upsetting heads of all reinforcement bars are clamped in reinforcement anchor holes of the tail end plate, when the assembled reinforcement cage is placed into a precast pile mold for tensioning, the head plate and the head end plate move relative to the reinforcement bars towards one end of the reinforcement bars, the tail plate and the tail end plate move relative to the reinforcement bars towards the other end of the reinforcement bars, the upsetting heads at two ends of the reinforcement bars are respectively clamped in the reinforcement anchor holes of the head end plate and the tail end plate firmly, and meanwhile the reinforcement bars are stretched to the required length.

In this embodiment, since the precast pile without the hoops is produced, the head end plate 1 and the tail end plate 3 may be end plates according to the prior art, that is, the end plates have no clamping table.

Example 2

In this embodiment, as shown in fig. 6, the precast pile is produced as a hooped precast pile. This embodiment differs from embodiment 1 in that a ferrule mounting step is added in this embodiment. The same places as in embodiment 1 are abbreviated or not.

A reinforcement cage production process of an enhanced precast pile comprises the following steps:

an end plate 1 and a tensioning head plate 2 at the head end of the reinforcement cage are assembled in advance; an end plate 3 and a tensioning tail plate 4 at the tail end of the reinforcement cage are preassembled;

placing a plurality of steel bars in a multi-layer steel bar blanking disc, and pulling the plurality of steel bars to pass through a steel bar penetrating disc of a seam welder and then pass through steel bar penetrating holes of an end plate 1 and a tensioning head plate 2 at the head end;

step (4), separating the tensioning head plate from the traction mechanism 5;

step (5), the cut steel bars after the rolling welding pass through the end plate 3 and the tensioning tail plate 4 at the tail end of the assembled steel bar cage, and the tail ends of the steel bars are anchored on the end plate 3 at the tail end after upsetting; sleeving the hoops 6 at the head end and the tail end on the end plate at the head end and the end plate at the tail end respectively;

and (6) placing the assembled reinforcement cage into a precast pile die for tensioning, wherein during tensioning, the tail plate and the tail end plate are fixed in position, the head plate and the head end plate move relative to one end far away from the tail plate, upsets at two ends of the reinforcement are firmly clamped in reinforcement anchoring holes of the head end plate and the tail end plate respectively, and meanwhile the reinforcement is stretched to the required length.

Specifically, be equipped with a plurality of reinforcing bar anchor holes 11 and stretch-draw screw hole 12 on the end plate 1 of head end, the end plate outer lane of head end is equipped with block 13, and hoop 6 part card is on block 13, and the external diameter of stretch-draw head board 2 is less than the external diameter of head end plate 1, and the external diameter of stretch-draw tailboard 4 is less than the external diameter of tail end plate 3.

As shown in fig. 7 to 10, the ferrule 6 has a hollow cylindrical structure, one end of the ferrule, which is connected to the end plate, is provided with a clip 61 of an inner buckle, and the other end of the ferrule has an enlarged bell mouth shape; the inner clip 61 is clipped on the clip 13 of the end plate.

Because the hoops 6 need to be clamped from the two ends of the reinforcement cage from outside to inside in this embodiment, the outer diameters of the tensioning head plate and the tensioning tail plate need to be smaller than the outer diameters of the corresponding head end plate and tail end plate, respectively. Meanwhile, the outer diameter of the clamping ring of the ferrule 6 is smaller than the maximum outer diameter of the end plate clamping table 13, so that the clamping ring 61 of the inner buckle is conveniently clamped on the clamping table 13; the external diameter of the bell mouth of the hoop is larger than that of the end plate, so that the hoop is convenient to be arranged from outside to inside. The collar 61 of the ferrule has a minimum inside diameter less than the minimum inside diameter at the end plate abutment 13, and the ferrule and abutment form an interference fit without the need for other auxiliary attachment means.

Example 3

The difference between this embodiment and

embodiments

1 and 2 is that the end plate in this embodiment is a non-reinforcement groove end plate. The process flow in this embodiment is the same as that of

embodiment

1 or 2, and the end plate in this embodiment can also be used for

embodiments

1 and 2. Similarly, a tension head plate and a tension tail plate may also be used in

embodiments

1 and 2.

As shown in fig. 11a and 11b, the end plate without a reinforcement groove at the head end is provided with a tension screw hole 12 and a reinforcement anchoring hole 11, a plurality of tension screw holes 12 are arranged around the reinforcement anchoring hole 11, and the inner ring of the tension screw hole 12 is provided with internal threads; the outer ring edge of the end plate without the reinforcement groove at the head end is provided with a clamping table 13 for installing a hoop. In fig. 11a and 11b, the rebar anchoring holes 11 are tapered holes.

As shown in fig. 12a and 12b, the rebar anchoring holes 11 of the head end plate are T-shaped holes.

As shown in fig. 13a and 13b, the end plate without the reinforcement slot at the tail end is provided with a stretching screw hole and a reinforcement anchoring hole, at least 1 stretching screw hole surrounds the reinforcement anchoring hole, and the inner ring of the stretching screw hole is provided with internal threads; the edge of the outer ring of the end plate without the reinforcement groove at the tail end is provided with a clamping table for installing a hoop; in fig. 13a and 13b, the rebar anchoring holes are tapered holes.

As shown in fig. 14a and 14b, the rebar anchoring holes are T-shaped holes.

As shown in fig. 15a to 15c, the structure of the head plate is schematically shown, the head plate is provided with head plate tensioning screw holes 22 and head plate steel bar penetrating holes 21, the head plate tensioning screw holes 22 are through holes, and at least 1 head plate tensioning screw hole 22 is arranged around the head plate steel bar penetrating holes 21;

as shown in fig. 16a to 16c, the structure of the tensioning tail plate is schematically shown, the tail plate is provided with tail plate tensioning screw holes 42 and tail plate reinforcing steel bar penetrating holes 41, and at least 1 tensioning screw hole 42 which is a through hole is arranged around the reinforcing steel bar penetrating holes 41; the middle of the tail plate is provided with a circular through hole 43 which is used as a pump material inlet inside the precast pile and a channel for pouring cement paste after centrifugation.

As shown in fig. 17 and 18, the tensioning screw holes 22 of the tensioning head plate are penetrated through a plurality of bolts, screwed into the tensioning screw holes of the end plate without the reinforcement slot at the head end, the tensioning head plate is connected with the end plate without the reinforcement slot at the head end, after the tensioning head plate and the end plate without the reinforcement slot are connected, the reinforcement penetrating holes of the head plate reinforcement of the tensioning head plate are aligned with the reinforcement anchoring holes 11 of the end plate without the reinforcement slot at the head end concentrically, and the surface of the end plate without the reinforcement slot at the head end, which is contacted with the tensioning head plate, is a large mouth of the reinforcement anchoring holes.

As shown in fig. 19 to 20, which are schematic views of the flow of the head end bar threading, heading and bar anchoring, the multi-tray material rack is provided with a plurality of trays of round bars, and the same number of trays of round bars can be used according to the number of the bar anchoring holes on the end plate without the bar slot at the head end. After the steel bars which are arranged on each disc of disc circle pass through the bar penetrating disc of the seam welder, each steel bar passes through the steel bar anchoring hole of the end plate without the bar penetrating groove at the head end and the steel bar penetrating hole of the head plate in sequence, and the bar penetrating direction is from the small opening to the large opening of the steel bar anchoring hole.

After the reinforcement is penetrated, upsetting the head end of the reinforcement, and after upsetting, pulling the head plate and the end plate without the reinforcement groove at the head end to the head end of the reinforcement until the upsetting heads of all the reinforcement are clamped in the reinforcement anchoring holes of the end plate without the reinforcement groove at the head end; the head plate and the end plate without the reinforcement groove at the head end are fixed on a traction trolley of a seam welder, and the seam welding operation of the reinforcement cages is started, namely, the ring reinforcement of the reinforcement cages is welded on the outer ring of each reinforcement cage in a surrounding manner. When the rolling welding of the reinforcement cage is completed according to the required length, the automatic cutting equipment cuts off the reinforcement bars, as shown in fig. 21, which is a schematic diagram of the reinforcement cage after cutting; and after the steel bar is cut off, the head plate, the end plate without the bar passing groove at the head end and the traction trolley are separated and taken out.

22-24, while the previous steps are carried out, a plurality of bolts can pass through the tension screw through holes of the tension tail plate and are screwed into the tension screw holes of the end plate without the reinforcement slot, the tension tail plate and the end plate without the reinforcement slot are connected together, after the tension tail plate and the end plate without the reinforcement slot are connected, the reinforcement through holes of the tension tail plate are aligned with the reinforcement anchoring holes of the end plate without the reinforcement slot in concentric centers, and the surface of the end plate without the reinforcement slot, which is contacted with the tension tail plate, is a large mouth of the reinforcement anchoring holes; the number of the tail plate steel bar penetrating holes of the tensioning tail plate is consistent with the number of the steel bar anchoring holes of the end plate without the steel bar passing groove at the tail end, the number of the steel bar penetrating holes of the head plate and the number of the steel bar anchoring holes of the end plate without the steel bar passing groove at the head end are consistent;

example 4

In this embodiment, upsetting can be performed simultaneously for a plurality of reinforcing bars, unlike embodiment 1. In this embodiment, unwritten is omitted in the same manner as in embodiment 1 and embodiment 2.

When upsetting a plurality of reinforcing bars simultaneously, upsetting can be performed in 2 ways.

First mode, many reinforcing bars centre gripping simultaneously in a plurality of little anchor clamps, and a plurality of little tups align each reinforcing bar respectively and carry out the upsetting, and every tup and every anchor clamps correspond 1 reinforcing bar and carry out the upsetting, set up a plurality of independent tups and anchor clamps and conveniently change and maintain, when one of them trouble, only need singly maintain and change, and the cost is less.

In the second mode, a large clamp and a large hammer are adopted to clamp and upsett the steel bars. The clamp is provided with a plurality of clamp grooves according to the number of the reinforcing steel bars.

Finally, it should be noted that: although the present invention has been described in detail with reference to the embodiments, it should be understood that the invention is not limited to the preferred embodiments, but is capable of modification and equivalents to some of the features described in the foregoing embodiments, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. The reinforcement cage production process of the reinforced precast pile is characterized by comprising the following steps of:

an end plate (1) and a tensioning head plate (2) at the head end of the reinforcement cage are assembled in advance; an end plate (3) and a tensioning tail plate (4) at the tail end of the reinforcement cage are preassembled;

placing a plurality of steel bars in a multi-layer steel bar blanking disc, and pulling the steel bars to pass through a steel bar penetrating disc of a seam welder and then pass through steel bar penetrating holes of an end plate (1) at the head end and a tensioning head plate (2); the multi-layer steel bar discharging disc is automatic rotatable multi-layer steel bar synchronous feeding equipment (7), and the equipment comprises an equipment rack (71), a charging disc rotating device (72) and a feeding disc (73); the equipment rack (71) comprises a main shaft (711) and a guide rail (712), the tray rotating device (72) comprises a rotating platform (721), the rotating platform (721) comprises multiple layers from top to bottom, the height of the guide rail (712) is matched with that of the rotating platform (721), the feeding tray (73) is placed on the rotating platform (721), one end of the rotating platform (721) is connected with the main shaft (711) and can rotate by taking the main shaft (711) as a center, the other end of the rotating platform is provided with a guide rail wheel (722), and the guide rail wheel (722) moves back and forth along the guide rail (712), so that the rotating platform (721) drives the feeding tray (73) to rotate randomly on the guide rail (712);

step (2), a plurality of steel bars (9) simultaneously pass through the assembled head end plate (1) and the tensioning head plate (2), and the head ends of the steel bars are anchored on the head end plate after upsetting;

step (3), connecting the tensioning head plate (2) with a traction mechanism (5) of a seam welder, performing seam welding processing of ring ribs around the steel bars by the seam welder, and automatically cutting off the steel bars of the steel bar cage by cutting equipment when the steel bar cage is seam welded to a required length;

step (4), separating the tensioning head plate from the traction mechanism (5);

step (5), the cut steel bars after the rolling welding pass through an end plate (3) and a tensioning tail plate (4) at the tail end of the assembled steel bar cage, and the tail ends of the steel bars are anchored on the end plate (3) at the tail end after heading;

2. The reinforcement cage manufacturing process of an enhanced precast pile according to claim 1, wherein when the process is used for manufacturing a pile with ferrules, after the end of the step (5), the ferrules (6) of the head end and the tail end are respectively sleeved on the end plates of the head end and the tail end, and then the step (6) is performed.

3. The reinforcement cage production process of the reinforced precast pile according to claim 2, wherein a plurality of reinforcement anchoring holes (11) and tensioning screw holes (12) are formed in an end plate (1) of the head end, a clamping table (13) is arranged on an outer ring of the end plate of the head end, a hoop is clamped on the clamping table, and one surface of a large opening of the reinforcement anchoring hole (11) of the end plate of the head end is contacted with a tensioning head plate (2); the end plate (3) of the tail end and the end plate (1) of the head end have the same structure; one surface of the large opening of the steel bar anchoring hole of the tail end plate is contacted with the tensioning tail plate (4).

4. A reinforcement cage production process of an enhanced precast pile according to claim 3, wherein a head plate reinforcement penetrating hole (21) and a head plate tensioning screw hole (22) are formed in the tensioning head plate (2), and the positions of the head plate reinforcement penetrating hole (21) and the head plate tensioning screw hole (22) correspond to the positions of a reinforcement anchoring hole (11) and a tensioning screw hole (12) in the head end plate; the tail plate tensioning device is characterized in that a tail plate steel bar penetrating hole (41) and a tail plate tensioning screw hole (42) are formed in the tensioning tail plate (4), the positions of the tail plate steel bar penetrating hole (41) and the tail plate tensioning screw hole (42) correspond to the steel bar anchoring hole and the tensioning screw hole in the tail end plate (3), and a circular through hole (43) is formed in the middle of the tensioning tail plate (4).

5. The reinforcement cage production process of the reinforced precast pile according to claim 1 or 2, wherein the end plate of the head end comprises an end plate body, a reinforcement anchoring hole (11) and a tensioning screw hole (12) are arranged on the end plate body, and the reinforcement anchoring hole (11) and the tensioning screw hole (12) are separately and independently arranged or are connected through a reinforcement passing groove (14).

6. The reinforcement cage production process of the reinforced precast pile according to claim 1, wherein the outer diameter of the tension head plate (2) is smaller than the outer diameter of the head end plate (1), and the outer diameter of the tension tail plate (4) is smaller than the outer diameter of the tail end plate (3).

7. The reinforcement cage production process of the reinforced precast pile according to claim 1, wherein in the step (1), when the reinforcement (9) passes through the head end plate, the reinforcement passing direction is from the small opening to the large opening of the reinforcement anchoring hole (11).

8. The reinforcement cage production process of the reinforced precast pile according to claim 1, wherein when upsetting the head and tail ends of the reinforcing bars (9), a plurality of reinforcing bars can be simultaneously upset, and each reinforcing bar can be respectively upset.

9. The reinforcement cage manufacturing process of the reinforced precast pile as recited in claim 7, wherein when a plurality of reinforcing bars are simultaneously headed, the plurality of reinforcing bars are simultaneously clamped in the clamp, and a plurality of small hammers are respectively aligned with each reinforcing bar for heading, and one large hammers can be adopted for simultaneous integral heading.

10. The reinforcement cage production process of the reinforced precast pile according to claim 7, wherein when upsetting each reinforcement, the upsetting is performed on the first reinforcement first, and after upsetting, the upsetting is performed on the next reinforcement by rotating the reinforcement cage by a rotation device.

11. The reinforcement cage production process of the reinforced precast pile according to claim 1, wherein in the step (2), after the upsetting is completed, the tensioning head plate (2) and the head end plate (1) are pulled towards the head end of the reinforcement until the upsets of all the reinforcement are clamped in the end plate reinforcement anchoring holes (11) of the head end.

12. The reinforcement cage production process of the reinforced precast pile according to claim 1, wherein the cutting equipment in the step (3) is an automatic cutting device (8), and the automatic cutting device (8) comprises a main machine seat (81), a lifting bottom plate (82) and a lifting assembly (83); lifting bottom plate (82) are connected with main frame (81) through lifting assembly (83), be provided with cutting assembly (84) on lifting bottom plate (82), cutting assembly (84) realize the cutting of steel reinforcement cage.

13. The reinforcement cage production process of the reinforced precast pile according to claim 2, wherein the ferrule (6) is of a hollow cylindrical structure, one end of the ferrule connected with the end plate is provided with a clip (61) of an inner buckle, and the other end of the ferrule is of an enlarged horn mouth shape; the collar (61) of the inner clasp is clasped on the end plate.