WO2020019399A1

WO2020019399A1 - Prefabricated concrete round pipe internal mold

Info

Publication number: WO2020019399A1
Application number: PCT/CN2018/103096
Authority: WO
Inventors: 沈丹萍
Original assignee: 沈丹萍
Priority date: 2018-07-25
Filing date: 2018-08-29
Publication date: 2020-01-30
Also published as: CN108858732A; CN108858732B

Abstract

A prefabricated concrete round pipe internal mold, comprising an internal mold cylinder (1) formed by rolling a plate. A brace rod device (3) and a locking device (2) are provided in the internal mold cylinder (1). The brace rod device (3) comprises multiple groups of brace rod components disposed in pairs on a central screw (301). One end of each brace rod component is hingedly connected to the central screw (301), and the other end is hingedly connected to the internal mold cylinder (1). The end of the brace rod component hingedly connected to the central screw (301) is connected to the central screw (301) by means of a transmission nut (302). The directions of movement of one group of brace rod components disposed in pair are opposite. The locking device (2) comprises a limiting seat (202), a hinge pedestal (204), and a drive cylinder (201) hingedly connected to the inner wall of the pipe. A joint support (205) is hingedly connected to the hinge pedestal (204). The other end of the joint support (205) is hingedly connected to the piston rod of the drive cylinder (201). A support rod (203) matching the limiting seat (202) is further hingedly connected to the joint support (205). The opening and closing of the internal module are more convenient, safer and more reliable, and the internal module is applicable to the production of concrete round pipes.

Description

Mould for precast concrete round pipe

Technical field

The invention relates to a concrete production mold, in particular to a concrete precast circular tube mold.

Background technique

In the production and use of the concrete prefabricated round pipe production mold, the mold opening action process is: loosening the inner mold locking mechanism and shrinking the inner mold; and the mold closing action process is: opening the inner mold and locking the inner mold locking mechanism. That is, before and after the mold is opened and closed, the inner mold needs to be loosened or locked first; the opening and closing process uses a lever assist method to achieve opening and closing, and the lever is connected to the inner mold. At the same time, the existing locking mechanism uses bolts with a support and a top block, and the support is welded to the wedge on the side of the clamping die of the inner mold. The bolt is installed in the screw hole of the support, and the top block is welded to the inner mold. On the wedge on the other side of the mold, a set of 200 to 300 mm is distributed on the same cylindrical bus bar of the internal mold. During operation, workers need to climb into the inner mold, carry a large torque impact wrench, and unscrew or tighten dozens of bolts one by one to achieve the locking or loosening of the mold. There are four main problems here. During operation, workers need to climb into the inner mold and use human power to repeatedly push the lever to shrink the inner mold so that the inner mold is disengaged from the cement product. There are four main problems here:

First, the labor intensity is high and the labor efficiency is low, requiring workers to climb into the inner mold a few meters deep, and to operate the lever and impact wrench;

The second is the low utilization efficiency of the equipment. The process requires steam curing after pouring. The temperature reaches about 80 ° C. It takes a period of time for workers to enter the mold for mold opening operation, and the operation is difficult and the workload is large;

Third, the safety is low. Even if the mold has been waiting for a period of time before the mold is opened, the temperature in the mold is slow due to the semi-closed space in the mold. When workers enter the mold to perform operations, they still need to save. High temperature of 50 ～ 60 ℃, and the temperature on the mold body will be higher, which is prone to errors and safety accidents during operation;

Fourth, the working environment is harsh. Workers working in a high temperature and unventilated environment at 50 to 60 ° C are painful and are not conducive to physical and mental health.

Summary of the Invention

The purpose of the present invention is to provide a concrete precast circular tube inner mold, which makes the opening and closing of the inner mold more convenient, safe and reliable, and the locking mechanism makes the closing of the inner mold cylinder more stable and reliable.

The purpose of the present invention is achieved as follows: a concrete precast circular tube inner mold comprising an inner mold cylinder formed by rolling sheet materials, and a brace device and a locking device are arranged in the inner mold cylinder;

The strut device includes a central screw, and a plurality of sets of strut assemblies are arranged on the central screw in pairs. One end of the strut assembly is hinged on the central screw, and the other end is hinged on the inner wall of the inner cylinder. The end of the strut assembly on the center screw is screw-connected to the center screw through a transmission nut, and the moving directions of a set of strut assemblies arranged in pairs are opposite to each other;

The locking device comprises a limit seat fixed on the inner wall of one end of the plate, a hinge support fixed on the inner wall of the other end of the plate, and a driving cylinder hinged on the inner wall of the plate. The hinge support is articulated with a joint bracket and a joint. The other end of the bracket is hinged with the piston rod of the driving cylinder, and the joint bracket is also hinged with a supporting rod that cooperates with the limit seat.

The invention involves two processes when working:

When clamping the mold: first rotate the center screw to drive the transmission nut to move axially along the center screw. The inner mold cylinder is opened by the support rod assembly hinged on the transmission nut. When the support rod assembly reaches the open limit position, it is pulled. The support rod is swung to a position close to the limit seat, and the cylinder rod of the driving cylinder is controlled to extend. The piston rod pushes the joint support to rotate around the hinge support, and at the same time pushes the support rod into the limit seat to complete the internal mold. The clamping process of the cylinder;

When opening the mold: first control the driving cylinder piston rod to retract, the piston rod pulls the joint bracket to rotate around the hinge support, at the same time, pulls the support rod away from the limit seat, pulls the support rod to swing it out of the limit seat, and then Rotating the center screw drives the transmission nut to move axially along the center screw, and the inner mold cylinder is contracted by the brace assembly hinged on the transmission nut, thereby completing the mold opening process of the inner mold cylinder.

Compared with the prior art, the present invention has the beneficial effect that the present invention realizes the opening and contraction of the inner mold cylinder through the center screw and the supporting rod assembly, thereby realizing the demolding process, and the inner mold cylinder is matched with a locking device. When the body is closed, the locking is more reliable, and the work is safer. At the same time, the worker is more convenient during operation, which reduces the labor intensity of the worker's operation. Because the demolding process no longer requires the temperature in the mold to be lowered before operation, Improved production efficiency; workers no longer need to enter the inner mold cylinder for operation, reducing the risk of operation, making the operation safer and more reliable; at the same time, the invention sets the moving directions of a pair of strut assemblies to face each other, so that each pair of struts When the rod assembly works, the axial forces cancel each other out, so that the overall mechanism is no longer in a high-stress state for a long time, and the service life of the internal mechanisms is prolonged. At the same time, when the mold is demoulded, the invention starts from the connection between the two ends of the plate to the plate. The center is detached. Compared with the whole detachment, the tension of the surface contact surface is smaller, and the demolding is easier and convenient, and will not cause damage to the inner wall of the product. . The invention can be used in the manufacture of concrete round pipes.

In order to make the strut assembly more uniformly stressed during contraction and more convenient to operate, the strut assembly includes a lifting seat fixed to the outer periphery of the transmission nut, and a plurality of inner hinges are evenly arranged along the outer periphery of the lifting seat, The inner hinge is connected to the outer hinge via a connecting rod. The outer hinge is fixed on the inner wall of the inner mold cylinder. The lifting seat is selected from an external hexagon nut. The internal hinge is fixed on the end face of the external hexagon nut. There are six levers and six outer hinges.

In order to facilitate the opening and closing of the joint of the inner plate of the inner mold cylinder and better sealing, the inner plate and the outer wedge are fixed at the two ends of the inner plate of the inner mold cylinder, and the inclined surfaces of the inner wedge and the outer wedge are overlapped. Forming a clamping line together, a groove is formed on the inclined surface of the inner wedge, a seal is arranged in the groove, the limit seat is fixed on the inner wall of the inner wedge, and the hinge support is fixed on the outer wedge On the inner wall of the inner mold, the hinge point between the driving cylinder and the inner mold cylinder is located on the inner wall of the inner mold cylinder near the outer wedge.

In order to enhance the stability and strength of the central screw structure, the operation is more convenient. The central screw is composed of a plurality of screws and a plurality of connecting shafts, and the screws are fixedly connected to the connecting shaft at a distance. The top of the central screw is fixed. The power input device is connected, and the bottom of the center screw is connected to the bearing seat.

In order to make the locking more reliable and the operation more convenient, the limit seat, the hinge support, the joint bracket, and the support rod are provided with several groups, wherein the hinged end of the joint bracket and the driving cylinder piston rod are connected in series via a first series shaft. Together, the driving cylinder piston rod is hinged on a first tandem shaft.

In order to make the power transmission of the cylinder more stable and reliable, the joint bracket includes an L-shaped support plate, and a series portion is provided at an outer end portion of the support plate shown in the figure. The series portion is provided with a series hole connected in series by a first series shaft. A hinge portion is provided on the other outer side of the support plate. The hinge portion is provided with a first hinge hole and a second hinge hole. The second hinge hole is located between the phase of the first hinge hole and the series hole. The first hinge hole It is hinged with the hinge support, the second hinge hole is hinged with the support rod, and a rib plate is arranged on the inner side of the support plate. The joint support of this structure ensures that the power of the driving cylinder is stably transmitted to the support rod to ensure its stable operation. The tandem part and the hinge part are arranged outside the support plate, so that the driving cylinder is more uniformly stressed when transmitting power. The reliability of the work of the invention is guaranteed.

In order to make the unlocking and locking operations more convenient and safer, a side of the support rod is provided with a boss, and a through hole is opened on the boss, and a second series shaft that connects a plurality of support rods in series is penetrated in the through hole. .

In order to make it easier to lock and disengage the support seat from the limit seat, an arc-shaped groove is processed on the limit seat, and a roller is provided at an end of the support rod that cooperates with the limit seat.

In order to make the locking more reliable, in the locked state, the driving cylinder is parallel to the support rod in phase. The mutually parallel structure makes the forces of each part cancel each other during locking, and the driving cylinder, joint support and support rod will not be deflected due to uneven force, which will affect the locking.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a top view of the present invention.

FIG. 2 is a schematic diagram of a mating structure of a locking device and an inner mold cylinder in the present invention.

FIG. 3 is a schematic structural diagram of a supporting structure of a brace device and an inner mold cylinder in the present invention.

FIG. 4 is a schematic structural diagram of a pair of strut assemblies and a center screw in the present invention.

FIG. 5 is a schematic diagram of a connection structure of a central screw, a lifting seat, an inner hinge, a connecting rod, and an outer hinge in the present invention.

FIG. 6 is an assembly schematic diagram of the locking device in the present invention.

FIG. 7 is a schematic structural diagram of a joint support in the present invention.

FIG. 8 is a schematic diagram of a locking state of the locking device in the present invention.

FIG. 9 is a schematic diagram of an unlocked state of a locking device in the present invention.

FIG. 10 is a schematic diagram of a state of a strut device when a mold is opened according to the present invention.

FIG. 11 is a partially enlarged view of a locking device in the present invention.

FIG. 12 is a schematic structural view of a mold clamping line when a mold is opened in the present invention.

Among them, 1 inner mold cylinder, 101 inner wedge, 102 outer wedge, 2 locking device, 201 drive cylinder, 202 limit seat, 203 support rod, 203a roller, 203b boss, 203c through hole, 204 hinge Support, 205 joint bracket, 205a support plate, 205b tandem portion, 205c tandem hole, 205d hinge portion, 205e first hinge hole, 205f second hinge hole, 205g stiffener plate, 3 brace device, 301 screw, 302 transmission Nut, 303 lifting seat, 304 inner hinge, 305 connecting rod, 306 connecting shaft, 307 outer hinge, 4 power input device, 5 bearing seat.

detailed description

A concrete prefabricated round tube inner mold shown in FIG. 1-11 includes an inner mold cylinder 1 formed by rolling sheets, and the inner mold cylinder 1 is provided with a brace device 3 and a locking device 2;

The strut device 3 includes a center screw. The center screw is provided with a plurality of sets of strut components. One end of the strut component is hinged on the center screw, and the other end is hinged on the inner wall of the inner cylinder 1 and hinged on the center screw. The end of the strut assembly is screw-connected to the center screw through a transmission nut 302. A set of strut assemblies arranged in pairs are arranged opposite to each other. The center screw is composed of a plurality of screws 301 and a plurality of connecting shafts 306. The screw 301 is fixedly connected with the connecting shaft 306 at a distance. The top of the center screw is fixedly connected with a power input device 4. The bottom of the center screw is connected to the bearing seat 5. The brace assembly includes a lifting seat 303 fixed to the outer periphery of the transmission nut 302. A plurality of inner hinges 304 are evenly arranged along the outer circumference of the lifting seat 303 in the circumferential direction. The inner hinge 304 is connected to the outer hinge 307 via a link 305. The outer hinge 307 is fixed on the inner wall of the inner mold cylinder 1. The lifting seat 303 is selected as an Hexagonal nut, the inner hinge 304 is fixed on the end face of the outer hexagonal nut, six are provided for the inner hinge 304, the connecting rod 305, and the outer hinge 307, and the inner wedge 101 is fixed at each end of the plate on the inner mold cylinder 1. Outer wedge 102, the wedge 101 within the wedge 102 and the outer inclined surface fastener together to form the parting line, the inclined surface of the wedge 101 defines the groove, the groove is provided with a gasket;

The locking device 2 includes a limiting seat 202 fixed on the inner wall of the inner wedge 101, a hinge support 204 fixed on the inner wall of the outer wedge 102, and a driving cylinder 201 hinged on the inner wall of the plate. The driving cylinder 201 and the inner mold cylinder The hinge point 1 is located on the inner wall of the inner mold cylinder 1 near the side of the outer wedge 102. The hinge support 204 is articulated with a joint support 205. The joint support 205 includes an L-shaped support plate 205a, an outer side of the support plate 205a shown. A serial portion 205b is provided at the end. The serial portion 205b is provided with a serial hole 205c connected in series via a first serial shaft. The other side of the support plate 205a is provided with a hinge portion 205d. The hinge portion 205d is provided with a first hinge hole 205e and The second hinge hole 205f, the second hinge hole 205f is located between the phase of the first hinge hole 205e and the series hole 205c, the first hinge hole 205e is hinged with the hinge support 204, the second hinge hole 205f is hinged with the support rod 203, and the support plate A stiffener plate 205g is provided on the inner side of 205a. A joint rod 203 is also articulated on the joint bracket 205 to cooperate with the limit seat 202. A side of the support rod 203 is provided with a boss 203b, and a through hole 203c is provided on the boss 203b. A through hole 203c is provided through it. The second series axis of the supporting rod 203 is connected in series. The limiting seat 202 is processed with an arc-shaped groove. The end of the supporting rod 203 and the limiting seat 202 is provided with a roller 203a, the limiting seat 202 and the hinge support. 204. The joint bracket 205 and the support rod 203 are provided with several groups. The joint bracket 205 and the end of the articulation of the piston rod of the driving cylinder 201 are connected in series via a first series shaft. The piston rod of the driving cylinder 201 is articulated on the first series shaft. In the locked state, the driving cylinder 201 is parallel to the support rod 203 in phase.

The invention involves two processes when working:

When clamping the mold: first rotate the central screw through the power input device 4 to drive a group of transmission nuts 302 to move in the axial direction of the central screw, and open the inner mold cylinder 1 through the support rod assembly hinged on the transmission nut 302, to be supported When the lever assembly reaches the open limit position, it pulls the second series of coupling shafts, which drives the support rod 203 to swing to a position close to the limit seat 202, and controls the driving cylinder 201 to extend the piston rod, and the piston rod pushes the first series of coupling shafts. So that the joint bracket 205 rotates around the hinge support 204, and the rotation of the joint bracket 205 pushes the support rod 203 to push it into the limit seat 202, thereby completing the mold clamping process of the inner mold cylinder 1. When opening the mold: first control the driving cylinder 201 The piston rod retracts, and the piston rod pulls the first series of connecting shafts, which causes the joint bracket 205 to rotate about the hinge support 204, and at the same time, pulls the support rod 203 away from the limit seat 202, and then pulls the second series of connecting shafts to drive The support rod 203 swings out of the position of the limit seat 202 to complete the unlocking, and then rotates the center screw through the power input device 4 to drive a group of transmission nuts 302 to move in the axial direction of the center screw, and articulates the transmission The brace assembly on the nut 302 shrinks the inner mold cylinder 1, so that the inner mold cylinder 1 is contracted from the clamping line position to both sides, thereby completing the mold opening process of the inner mold cylinder 1.

The present invention is not limited to the above embodiments. On the basis of the technical solution disclosed by the present invention, those skilled in the art can make some substitutions and replacements for some of the technical features without creative labor according to the disclosed technical content. Deformation, these replacements and deformations are all within the protection scope of the present invention.

Claims

A concrete precast circular tube inner mold, which is characterized in that it includes an inner mold cylinder formed by rolling sheets, and a brace device and a locking device are arranged in the inner mold cylinder;

The strut device includes a central screw, and a plurality of sets of strut assemblies are arranged on the central screw in pairs. One end of the strut assembly is hinged on the central screw, and the other end is hinged on the inner wall of the inner cylinder. The end of the strut assembly on the center screw is screw-connected to the center screw through a transmission nut, and the moving directions of a set of strut assemblies arranged in pairs are opposite to each other;

The locking device comprises a limit seat fixed on the inner wall of one end of the plate, a hinge support fixed on the inner wall of the other end of the plate, and a driving cylinder hinged on the inner wall of the plate. The hinge support is articulated with a joint bracket and a joint. The other end of the bracket is hinged with the piston rod of the driving cylinder, and the joint bracket is also hinged with a supporting rod that cooperates with the limit seat.
The inner mold for a precast concrete pipe according to claim 1, wherein the brace assembly includes a lifting seat fixed on the outer periphery of the transmission nut, and a plurality of inner parts are uniformly arranged along the outer periphery of the lifting seat in the circumferential direction. A hinge, wherein the inner hinge is connected to the outer hinge via a connecting rod, the outer hinge is fixed on the inner wall of the inner mold cylinder, the lifting seat is selected from an outer hexagon nut, and the inner hinge is fixed on an end face of the outer hexagon nut. , Connecting rod and outer hinge are all provided with six.
The precast concrete round pipe inner mold according to claim 1 or 2, wherein the two ends of the plate on the inner mold cylinder are respectively fixed with an inner wedge and an outer wedge, and the inner and outer wedges are inclined The surfaces are overlapped together to form a mold line. A groove is formed on the inclined surface of the inner wedge, a seal is arranged in the groove, the limiting seat is fixed on the inner wall of the inner wedge, and the hinge support is fixed. On the inner wall of the outer wedge, the hinge point between the driving cylinder and the inner mold cylinder is located on the inner wall of the inner mold cylinder near the outer wedge.
The precast concrete tube inner mold according to claim 1 or 2, wherein the center screw is formed by combining a plurality of screws and a plurality of connecting shafts, and the screws and the connecting shafts are fixedly connected together at a distance. A power input device is fixedly connected to the top of the center screw, and a bottom of the center screw is connected to the bearing seat.
The concrete precast circular tube mold according to claim 1 or 2, wherein the limit seat, the hinge support, the joint support, and the support rod are provided in several groups, wherein the joint support is hinged with the piston rod of the driving cylinder. One end is connected in series through a first series shaft, and the driving cylinder piston rod is hinged on the first series shaft.
The mold for a precast concrete round pipe according to claim 5, wherein the joint support comprises an L-shaped support plate, and a series portion is provided on an outer end portion of the support plate, and a series portion is provided on the series portion. A series hole connected in series by a series shaft, and a hinge portion is provided on the other outer side of the support plate. The hinge portion is provided with a first hinge hole and a second hinge hole. The second hinge hole is located at the first hinge hole and the series hole. Between phases, the first hinge hole is hinged to the hinge support, the second hinge hole is hinged to the support rod, and a rib plate is provided on the inner side of the support plate.
The mold for a precast concrete circular pipe according to claim 5, wherein a protrusion is provided on the side of the support rod, a through hole is formed on the protrusion, and a plurality of support rods are connected in series through the through hole. A second tandem shaft together.
The precast concrete circular tube mold according to claim 1-2, wherein the limiting seat is processed with an arc-shaped groove, and an end portion of the supporting rod matching the limiting seat is provided with a roller. .
The mold for a precast concrete circular pipe according to claim 1-2, wherein, in a locked state, the driving cylinder is parallel to the support rod in phase.