CN115008597B - Centrifugal forming device and process for concrete hollow square pile - Google Patents
Centrifugal forming device and process for concrete hollow square pile Download PDFInfo
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- CN115008597B CN115008597B CN202210769138.2A CN202210769138A CN115008597B CN 115008597 B CN115008597 B CN 115008597B CN 202210769138 A CN202210769138 A CN 202210769138A CN 115008597 B CN115008597 B CN 115008597B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
- B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
- B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
- B28B21/30—Centrifugal moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
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Abstract
The invention discloses a centrifugal forming device and a centrifugal forming process for a concrete hollow square pile in the technical field of engineering construction, wherein the centrifugal forming device comprises an upper die, a lower die and two bases, wherein the two bases are respectively arranged on the left side wall and the right side wall of the lower die; the upper die is provided with a jack, the lower die is provided with a butt joint hole, the size of the butt joint hole is the same as that of the jack, and the butt joint hole is positioned right above the jack; the upper die is fixedly connected with an installation block, a first spring is fixedly connected to the installation block, a first sliding block is fixedly connected to the right end of the first spring, the first sliding block is connected with the upper die in a sliding mode in the left-right direction, a clamping block is installed in the first sliding block and consists of a rectangular block and a right-angled triangular block, and the bottom of the rectangular block is fixedly connected with the top of the right-angled triangular block; the invention can lead the upper die and the lower die to be more convenient for die assembly and die release, and can greatly improve the production efficiency of the concrete hollow square pile.
Description
Technical Field
The invention relates to the technical field of engineering construction, in particular to a centrifugal forming device and process of a concrete hollow square pile.
Background
The concrete hollow square pile is a concrete prefabricated part manufactured by applying centrifugal force to a mould, the mould is driven by a centrifugal machine to rotate at high speed, concrete in the mould is formed along a square inner cavity of the mould under the action of the centrifugal force, and the center of the concrete hollow square pile is in a hollow state under the action of the centrifugal force;
because hollow square pile of concrete is in process of production, it is fixed with the bed die to go up the mould usually adopts bolt and nut, this kind of mode though can make last mould and bed die closely laminate and connect firmly, but the fastening of bolt and nut is twisted by the manual work completely with relaxing, and in case the mistake leads to bolt and nut to twist tightly, bolt and nut drop easily when the mould is rotatory at high speed, and the mould part after the fixed of having lost bolt and nut appears the opening easily, lead to the mould concrete to spill over when the centrifugation easily, can lead to the hollow square pile of concrete disqualification after the shaping.
Based on the above, the invention designs a centrifugal forming device and a centrifugal forming process for a concrete hollow square pile, so as to solve the problems.
Disclosure of Invention
The invention aims to provide a centrifugal forming device and a centrifugal forming process for a concrete hollow square pile, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a centrifugal forming device for a concrete hollow square pile comprises an upper die, a lower die and two bases, wherein the two bases are respectively arranged on the left side wall and the right side wall of the lower die; the upper die is provided with a jack, the lower die is provided with a butt joint hole, the size of the butt joint hole is the same as that of the jack, and the butt joint hole is positioned right below the jack; the upper die is fixedly connected with an installation block, a first spring is fixedly connected to the installation block, a first sliding block is fixedly connected to the right end of the first spring, the first sliding block is connected with the upper die in a sliding mode in the left-right direction, a clamping block is installed in the first sliding block and consists of a rectangular block and a right-angled triangular block, the bottom of the rectangular block is fixedly connected with the top of the right-angled triangular block, and the length of the right-angled triangular block is larger than that of the rectangular block; the widths of the right-angle triangular block, the rectangular block and the butt joint hole are the same; the clamping block can be clamped with the butt joint hole; and the lower die is provided with a driving assembly, and the driving assembly is used for driving the clamping block to be separated from the butt joint hole.
As a further scheme of the present invention, the driving assembly includes an air cylinder, the air cylinder is fixedly connected to the lower mold, an output shaft of the air cylinder is fixedly connected to a push plate, the push plate is slidably connected to the lower mold in the left-right direction, and the push plate is located on the left side of the butt-joint hole.
As a further scheme of the invention, a fixed plate is fixedly connected to the lower die, a second sliding block is connected to the fixed plate in a sliding manner in the vertical direction, and a sliding rod is connected to the second sliding block in a sliding manner in the left-right direction; the sliding rod is fixedly connected with a second spring for resetting the sliding rod, and the sliding rod is fixedly connected with an insertion block; the fixed plate is fixedly connected with a slide way, a slide groove is formed in the slide way, the slide groove is composed of a transverse groove, a chute and a vertical groove, the left end of the transverse groove is communicated with the bottom end of the chute, and the bottom end of the vertical groove is communicated with the top end of the chute; a sliding column is connected in the sliding groove in a sliding manner and is fixedly connected with the inserting block; a wedge block for driving the insertion block to move is arranged on the rear side of the insertion block, and the wedge block is connected with the fixed plate in a sliding mode in the front-rear direction; and the wedge block is fixedly connected with a third spring for resetting.
As a further scheme of the present invention, the fixture block is connected with the first slider in a sliding manner in a vertical direction, a fourth spring is fixedly connected to the fixture block, a bottom end of the fourth spring is fixedly connected with the first slider, and an elastic force of the fourth spring is smaller than an elastic force of the first spring; a first inclined plane is arranged on the left side of the top of the right-angle triangular block.
As a further scheme of the invention, the front side and the rear side of the right-angle triangular block are both provided with guide inclined planes.
As a further scheme of the invention, the upper die and the lower die are both fixedly connected with reinforcing ribs.
As a further scheme of the invention, the upper die and the lower die are both fixedly connected with semicircular running wheels, and the two semicircular running wheels can be combined into a complete running wheel.
A centrifugal forming process of a concrete hollow square pile comprises the following steps:
the method comprises the following steps: firstly, respectively fixedly mounting two bases on the left side wall and the right side wall of a lower die;
step two: hoisting an upper die right above a lower die, and then vertically hoisting downwards;
step three: the clamping block moves to an inner opening of the butt joint hole, and the side wall of the butt joint hole drives one end of the clamping block to move rightwards; when the bottom surface of the upper die is attached to the top surface of the lower die, the fixture block moves a distance leftwards under the action of the first spring, the left side wall of the rectangular block is attached to the left side wall of the butt joint hole, and the left end of the right-angle triangular block is located on the left side of the butt joint hole;
step four: the external driving device drives the running wheel to rotate at a high speed, so that the running wheel drives the upper die and the lower die to rotate at a high speed, the wedge block can move to one side close to the plug block under the action of centrifugal force, and the wedge block can drive the plug block to be inserted into the butt joint hole and the jack to limit the clamp block;
step five: after the concrete hollow square pile is formed, the driving assembly drives the clamping block to move rightwards, and after the right side wall of the rectangular block is attached to the right side wall of the butt joint hole, a worker can lift the upper die.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the arrangement of the jack, the butt joint hole, the first spring and the fixture block, the fixture block is arranged to be composed of the rectangular block and the right-angled triangular block, the rectangular block can play a guiding role, the right-angled triangular block can play a limiting role, the rectangular block, the right-angled triangular block, the jack and the butt joint hole are the same in width, the right-angled triangular block can enable the upper die and the lower die to be completely fixed in the front and back direction and the up and down direction, the upper die and the lower die can be ensured to be tightly fixed, the upper die and the lower die can be automatically fixed only by aligning with the lower die in the downward hoisting process, the upper die and the lower die do not need to be fixed through bolts and nuts, manual screwing by workers is not needed, the time for screwing the nuts by the workers can be saved while the upper die and the lower die are tightly fixed, the problem that the nuts cannot be screwed tightly due to errors by the workers can be avoided, and the separation of the upper die and the lower die can be realized only by pushing the air cylinder when the post-forming demoulding is carried out, so that the efficiency of the concrete hollow square pile forming can be greatly improved; and the production quality of the concrete hollow square pile can be better ensured.
2. According to the invention, through the arrangement of the insert block, the slide way, the slide column and the wedge block, the wedge block can be driven to be inserted into the jack and the butt joint hole along the slide way under the action of centrifugal force by virtue of high-speed rotation of the upper die and the lower die, the slide way is formed by arranging the transverse groove, the inclined groove and the vertical groove, the insert block can be more smoothly inserted into the jack and the butt joint hole, the jack and the butt joint hole can be completely filled by matching the insert block with the rectangular block, the upper die and the lower die can be ensured to be more tightly fixed during high-speed rotation, the upper die and the lower die can be ensured not to have gaps, better concrete can be formed, the insert block can be automatically reset after the upper die and the lower die stop rotating, and the demoulding operation can be simpler.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the present invention;
FIG. 3 is a schematic diagram of an upper mold and its upper structure according to the present invention;
FIG. 4 is a schematic view of the lower mold and the upper structure thereof according to the present invention;
FIG. 5 is a schematic front cross-sectional view of the overall structure of the present invention;
FIG. 6 is an enlarged view of a portion A of FIG. 5;
FIG. 7 is a schematic diagram showing the positional relationship among the fixture block, the insert block and the wedge block according to the present invention;
FIG. 8 is a diagram illustrating a fixture block structure according to the present invention;
fig. 9 is a schematic view of the structure of the insert block and the slide way of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
go up mould 1, bed die 2, base 3, jack 4, butt joint hole 5, installation piece 6, first spring 7, first slider 8, fixture block 9, rectangular block 901, right angle triangle 902, cylinder 10, push pedal 11, fixed plate 12, second slider 13, slide bar 14, second spring 15, inserted block 16, slide 17, spout 18, cross slot 181, chute 182, erect groove 183, traveller 19, wedge 20, third spring 21, fourth spring 22, first inclined plane 23, direction inclined plane 24, strengthening rib 25, semicircle runner 26.
Detailed Description
Referring to fig. 1-9, the present invention provides a technical solution: a centrifugal forming device for a concrete hollow square pile comprises an upper die 1, a lower die 2 and two bases 3, wherein the two bases 3 are respectively arranged on the left side wall and the right side wall of the lower die 2; the upper die 1 is provided with a jack 4, the lower die 2 is provided with a butt joint hole 5, the size of the butt joint hole 5 is the same as that of the jack 4, and the butt joint hole 5 is positioned right below the jack 4; the upper die 1 is fixedly connected with an installation block 6, the installation block 6 is fixedly connected with a first spring 7, the right end of the first spring 7 is fixedly connected with a first sliding block 8, the first sliding block 8 is connected with the upper die 1 in a sliding mode in the left-right direction, a clamping block 9 is installed in the first sliding block 8, the clamping block 9 consists of a rectangular block 901 and a right-angle triangular block 902, the bottom of the rectangular block 901 is fixedly connected with the top of the right-angle triangular block 902, and the length of the right-angle triangular block 902 is larger than that of the rectangular block 901; the widths of the right-angle triangular block 902, the rectangular block 901 and the butt joint hole 5 are the same; the clamping block 9 can be clamped with the butt joint hole 5; and a driving assembly is arranged on the lower die 2 and used for driving the clamping block 9 to be separated from the butt joint hole 5.
As a further aspect of the present invention, the driving assembly includes an air cylinder 10, the air cylinder 10 is fixedly connected to the lower mold 2, an output shaft of the air cylinder 10 is fixedly connected to a push plate 11, the push plate 11 is slidably connected to the lower mold 2 in the left-right direction, and the push plate 11 is located at the left side of the docking hole 5.
When the scheme is put into practical use, firstly two bases are installed at two ends of a steel reinforcement cage, then the steel reinforcement cage is placed in a lower die 2, the two bases are respectively and fixedly installed on the left side wall and the right side wall of the lower die 2, then concrete is filled in the lower die, then an upper die 1 is lifted by a hoisting tool to enable the upper die 1 to be positioned right above the lower die 2, then the upper die 1 is vertically and downwards hoisted, after a right-angle triangular block 902 moves downwards to be in contact with a butt joint hole 5, the side wall of the butt joint hole 5 enables the right-angle triangular block 902 to move rightwards by extruding the inclined surface of the right-angle triangular block 902, the right-angle triangular block 902 can drive a rectangular block 901 and a first slide block 8 to synchronously move rightwards, the first sliding block 8 slides rightwards on the upper die 1 and stretches the first spring 7, the maximum distance for the right side walls of the rectangular block 901 and the rectangular block 902 to move rightwards is that the right side walls of the rectangular block 901 and the rectangular block 902 are attached to the right side walls of the jack 4 and the butt hole 5, when the bottom surface of the upper die 1 is attached to the top surface of the lower die 2, the top surface of the rectangular block 902 is flush with the bottom surface of the top of the lower die 2, at the moment, the acting force of the butt hole 5 is lost by the rectangular block 902, the retracting elastic force of the first spring 7 drives the first sliding block 8, the rectangular block 901 and the rectangular block 902 to move leftwards synchronously, and the elastic force of the first spring 7 drives the rectangular block 902 to move to the position shown in fig. 6; because the widths of the rectangular block 901 and the right-angled triangular block 902 are the same as the widths of the jack 4 and the butt hole 5 (the widths are the distances in the front-back direction), the left-right direction of the upper die 1 is completely limited by the base 3, and the front-back direction and the up-down direction are completely limited by the fixture blocks 9; the upper die 1 is tightly attached to the lower die 2; then, the mold after mold closing can be rotated at a high speed, when the upper mold 1 and the lower mold 2 rotate at a high speed, concrete in the upper mold 1 and the lower mold 2 can be attached to the inner wall of a square hole formed by the upper mold 1 and the lower mold 2 under the action of centrifugal force and form a hollow structure in the upper mold 1 and the lower mold 2, after the upper mold 1 and the lower mold 2 rotate at a high speed for a certain time, the mold is placed in high-temperature steam for heating, after the mold and a concrete square pile are heated for 8-10 hours, the mold is taken out of a steam furnace, then an air cylinder 10 is started, the air cylinder drives a push plate 11 to move rightwards, the push plate 11 can drive a right-angle triangular block 902 to move rightwards until the whole right-angle triangular block 902 moves to be right below a butt joint hole 5, at the moment, the right-angle triangular block 902 moves to the maximum distance, then the upper mold 1 can be driven to move upwards through a hoisting tool until the upper mold 1 completely separates from the lower mold 2; then, taking out the formed concrete hollow square pile from the lower die to complete the whole production process of the concrete square pile; according to the invention, through the arrangement of the jack 4, the butt joint hole 5, the first spring 7 and the fixture block 9, the fixture block 9 is arranged to be composed of the rectangular block 901 and the right-angle triangular block 902, the rectangular block 901 can play a guiding role, the right-angle triangular block 902 can play a limiting role, the rectangular block 901, the right-angle triangular block 902, the jack 4 and the butt joint hole 5 are the same in width, the right-angle triangular block 902 can enable the upper die 1 and the lower die 2 to be completely fixed in the front-back and up-down directions, the upper die 1 and the lower die 2 can be ensured to be tightly fixed, only the upper die 1 is aligned with the lower die 2 in the downward hoisting process, the upper die 1 and the lower die 2 can be automatically fixed, the upper die 1 and the lower die 2 do not need to be fixed through bolts and nuts, the workers do not need to manually screw, the time for screwing the nuts by the workers can be saved while the upper die 1 and the lower die 2 are tightly fixed, the nuts can be prevented from being screwed by the faults, and the hollow pile forming efficiency can be greatly improved by pushing the cylinder to push the lower die 2; and the production quality of the concrete hollow square pile can be better ensured.
As a further scheme of the present invention, a fixed plate 12 is fixedly connected to the lower mold 2, a second slide block 13 is slidably connected to the fixed plate 12 in the vertical direction, and a slide bar 14 is slidably connected to the second slide block 13 in the left-right direction; a second spring 15 for resetting the sliding rod 14 is fixedly connected to the sliding rod 14, and an inserting block 16 is fixedly connected to the sliding rod 14; a slide way 17 is fixedly connected to the fixed plate 12, a slide way 18 is formed in the slide way 17, the slide way 18 is composed of a transverse groove 181, an inclined groove 182 and a vertical groove 183, the left end of the transverse groove 181 is communicated with the bottom end of the inclined groove 182, and the bottom end of the vertical groove 183 is communicated with the top end of the inclined groove 182; a sliding column 19 is connected in the sliding groove 18 in a sliding manner, and the sliding column 19 is fixedly connected with the inserting block 16; a wedge block 20 for driving the insertion block 16 to move is arranged at the rear side of the insertion block, and the wedge block 20 is connected with the fixed plate 12 in a sliding mode in the front-rear direction; the wedge block 20 is fixedly connected with a third spring 21 for resetting.
When the scheme is put into practical use, after the upper die 1 and the lower die 2 are completely fixed under the action of the fixture block 9, the upper die 1 and the lower die 2 rotate together at a high speed, the lower die 2 drives the wedge block 20 to rotate synchronously when rotating, the wedge block 20 moves outwards under the action of centrifugal force, the wedge block 20 drives the insert block 16 to move upwards through the inclined surface, the insert block 16 drives the sliding column 19 to move upwards in the sliding groove 18, it needs to be noted that the right-angled triangular block 902 drives the insert block 16 to move rightwards for a short distance when moving downwards in the butt joint hole 5, the insert block 16 drives the sliding column 19 to move rightwards for a short distance in the transverse groove 181, then the insert block 16 and the sliding rod 14 return to the positions shown in fig. 6 under the action of the second spring 15, and at this time, the sliding column 19 is located at the bottommost end of the sliding groove 182; when the insert 16 is driven by the wedge block 20 to move upwards, the insert 16 drives the sliding column 19 to slide upwards and leftwards in the chute 182, and when the sliding column 19 slides to the top end of the chute 182, the left side wall of the insert 16 is attached to the right side wall of the fixture block 9; then when the inserting block 16 moves upwards again, the sliding column 19 is driven to move vertically upwards in the vertical groove 183, and when the sliding column 19 moves to the topmost end of the vertical groove 183, the top surface of the inserting block 16 is flush with the top surface of the inserting hole 4; it should be noted that the length of the rectangular block 901 plus the length of the insert block 16 is equal to the length of the docking hole 5, that is, after the insert block 16 is inserted into the docking hole 5 and the insertion hole 4, the docking hole 5 and the insertion hole 4 are completely filled with the rectangular block 901 and the insert block 16, so that the upper die 1 and the lower die 2 can be fixed more stably when the upper die 1 and the lower die 2 rotate at a high speed; after the upper die 1 and the lower die 2 stop rotating, the wedge block 20 slides back to the initial position inwards under the action of the elastic force of the third spring 21, then the insert block 16 slides back to the initial position downwards under the action of the second spring 15 and the self gravity, and then the right-angle triangular block 902 can be pushed by the push plate 11 to move rightwards; according to the invention, through the arrangement of the insert block 16, the slide way 17, the slide groove 18, the slide column 19 and the wedge block 20, the insert block 16 can be pushed to be inserted into the insert hole 4 and the butt joint hole 5 along the slide groove 18 under the action of centrifugal force by the high-speed rotation of the upper die 1 and the lower die 2 through the wedge block 20, the insert block 16 can be more smoothly inserted into the insert hole 4 and the butt joint hole 5 through the slide groove 18 consisting of the transverse groove 181, the inclined groove 182 and the vertical groove 183, the insert block 16 can be matched with the rectangular block 901 to completely fill the insert hole 4 and the butt joint hole 5, the upper die 1 and the lower die 2 can be more tightly fixed during the high-speed rotation, the upper die 1 and the lower die 2 can be ensured not to have a gap, the concrete can be better molded, and the insert block 16 can automatically reset after the rotation of the upper die 1 and the lower die 2 is stopped, so that the demolding work is simpler.
As a further aspect of the present invention, the fixture block 9 is connected to the first slider 8 in a sliding manner in the vertical direction, a fourth spring 22 is fixedly connected to the fixture block 9, the bottom end of the fourth spring 22 is fixedly connected to the first slider 8, and an elastic force of the fourth spring 22 is smaller than an elastic force of the first spring 7; the left side of the top of the right triangle block 902 is provided with a first inclined surface 23.
Above-mentioned scheme is when putting into the in-service use, when the bottom surface of last mould 1 and the top surface laminating of bed die 2 in this scheme, the top surface of right angle triangle piece 902 is located between the top bottom surface and the top surface of bed die 2 (be located butt joint hole 5 promptly), and first inclined plane 23 is crisscross with the top bottom surface of bed die 2, when first spring 7 drives right angle triangle piece 902 and moves left, the lateral wall of butt joint hole 5 can drive right angle triangle piece 902 through the first inclined plane of extrusion and move a short segment distance downwards, fixture block 9 can move a short segment distance downwards and compress fourth spring 22 on first slider 8, can make fixture block 9 fix mould 1 and bed die 2 better under fourth spring 22's effect.
As a further scheme of the present invention, the front and rear sides of the right-angle triangular block 902 are both provided with guide slopes 24; during operation, the right-angle triangular block 902 can better slide into the butt joint hole 5 through the arrangement of the guide inclined plane.
As a further scheme of the invention, the upper die 1 and the lower die 2 are both fixedly connected with reinforcing ribs 25; during operation, through the setting of strengthening rib 25, can make upper die 1 and bed die 2 life increase.
As a further scheme of the invention, the upper die 1 and the lower die 2 are both fixedly connected with a semicircular running wheel 26, and the two semicircular running wheels 26 can be combined into a complete running wheel; during operation, through semicircle race wheel 26's setting, two semicircles are run wheel 26 and can be made up into a complete race wheel, can run wheel rotation through the drive and drive mould 1 and lower mould 2 and rotate.
A centrifugal forming process of a concrete hollow square pile comprises the following steps:
the method comprises the following steps: firstly, fixedly mounting two bases 3 on the left side wall and the right side wall of a lower die 2 respectively;
step two: hoisting the upper die 1 right above the lower die 2, and then vertically hoisting downwards;
step three: the clamping block 9 moves to the inner opening of the butt joint hole 5, and the side wall of the butt joint hole 5 drives the clamping block 9 to move rightwards, so that one end of the clamping block 9 moves; after the bottom surface of the upper die 1 is attached to the top surface of the lower die 2, the fixture block 9 moves a distance to the left under the action of the first spring 7, the left side wall of the rectangular block 901 is attached to the left side wall of the butt joint hole 5, and the left end of the right-angled triangular block 902 is located on the left side of the butt joint hole 5;
step four: the external driving device drives the running wheel to rotate at a high speed, so that the running wheel drives the upper die 1 and the lower die 2 to rotate at a high speed, the wedge block 20 moves to one side close to the plug block 16 under the action of centrifugal force, and the wedge block 20 drives the plug block 16 to be inserted into the butt joint hole 5 and the jack 4 to limit the plug block 9;
step five: after the concrete hollow square pile is formed, the driving assembly drives the clamping block 9 to move rightwards, and after the right side wall of the rectangular block 901 is attached to the right side wall of the butt joint hole 5, a worker can lift the upper die 1.
The working principle is as follows: when the scheme is put into practical use, firstly two bases are installed at two ends of a steel reinforcement cage, then the steel reinforcement cage is placed in a lower die 2, the two bases are respectively and fixedly installed on the left side wall and the right side wall of the lower die 2, then concrete is filled in the lower die, then an upper die 1 is lifted by a hoisting tool to enable the upper die 1 to be positioned right above the lower die 2, then the upper die 1 is vertically and downwards hoisted, after a right-angle triangular block 902 moves downwards to be in contact with a butt joint hole 5, the side wall of the butt joint hole 5 enables the right-angle triangular block 902 to move rightwards by extruding the inclined surface of the right-angle triangular block 902, the right-angle triangular block 902 can drive a rectangular block 901 and a first slide block 8 to synchronously move rightwards, the first sliding block 8 slides rightwards on the upper die 1 and stretches the first spring 7, the maximum distance for the right side walls of the rectangular block 901 and the rectangular block 902 to move rightwards is that the right side walls of the rectangular block 901 and the rectangular block 902 are attached to the right side walls of the jack 4 and the butt hole 5, when the bottom surface of the upper die 1 is attached to the top surface of the lower die 2, the top surface of the rectangular block 902 is flush with the bottom surface of the top of the lower die 2, at the moment, the acting force of the butt hole 5 is lost by the rectangular block 902, the retracting elastic force of the first spring 7 drives the first sliding block 8, the rectangular block 901 and the rectangular block 902 to move leftwards synchronously, and the elastic force of the first spring 7 drives the rectangular block 902 to move to the position shown in fig. 6; because the widths of the rectangular block 901 and the right-angled triangular block 902 are the same as the widths of the jack 4 and the butt hole 5 (the widths are the distances in the front-back direction), the left-right direction of the upper die 1 is completely limited by the base 3, and the front-back direction and the up-down direction are completely limited by the fixture blocks 9; the upper die 1 is tightly attached to the lower die 2; then, the mold after mold closing can be rotated at a high speed, when the upper mold 1 and the lower mold 2 rotate at a high speed, concrete in the upper mold 1 and the lower mold 2 can be attached to the inner wall of a square hole formed by the upper mold 1 and the lower mold 2 under the action of centrifugal force and form a hollow structure in the upper mold 1 and the lower mold 2, after the upper mold 1 and the lower mold 2 rotate at a high speed for a certain time, the mold is placed in high-temperature steam for heating, after the mold and a concrete square pile are heated for 8-10 hours, the mold is taken out of a steam furnace, then an air cylinder 10 is started, the air cylinder drives a push plate 11 to move rightwards, the push plate 11 can drive a right-angle triangular block 902 to move rightwards until the whole right-angle triangular block 902 moves to be right below a butt joint hole 5, at the moment, the right-angle triangular block 902 moves to the maximum distance, then the upper mold 1 can be driven to move upwards through a hoisting tool until the upper mold 1 completely separates from the lower mold 2; then, taking out the formed concrete hollow square pile from the lower die to complete the whole production process of the concrete square pile; according to the invention, through the arrangement of the jack 4, the butt joint hole 5, the first spring 7 and the fixture block 9, the fixture block 9 is arranged to be composed of the rectangular block 901 and the right-angle triangular block 902, the rectangular block 901 can play a guiding role, the right-angle triangular block 902 can play a limiting role, the rectangular block 901, the right-angle triangular block 902, the jack 4 and the butt joint hole 5 are the same in width, the right-angle triangular block 902 can enable the upper die 1 and the lower die 2 to be completely fixed in the front-back and up-down directions, the upper die 1 and the lower die 2 can be ensured to be tightly fixed, only the upper die 1 is aligned with the lower die 2 in the downward hoisting process, the upper die 1 and the lower die 2 can be automatically fixed, the upper die 1 and the lower die 2 do not need to be fixed through bolts and nuts, the workers do not need to manually screw, the time for screwing the nuts by the workers can be saved while the upper die 1 and the lower die 2 are tightly fixed, the nuts can be prevented from being screwed by the faults, and the hollow pile forming efficiency can be greatly improved by pushing the cylinder to push the lower die 2; and the production quality of the concrete hollow square pile can be better ensured.
Claims (6)
1. A centrifugal forming device for a concrete hollow square pile comprises an upper die (1), a lower die (2) and two bases (3), wherein the two bases (3) are respectively arranged on the left side wall and the right side wall of the lower die (2); the method is characterized in that: the upper die (1) is provided with jacks (4), the lower die (2) is provided with butt joint holes (5), the butt joint holes (5) and the jacks (4) are the same in size, and the butt joint holes (5) are located right below the jacks (4); the upper die is characterized in that an installation block (6) is fixedly connected to the upper die (1), a first spring (7) is fixedly connected to the installation block (6), a first sliding block (8) is fixedly connected to the right end of the first spring (7), the first sliding block (8) is connected with the upper die (1) in a sliding mode in the left-right direction, a clamping block (9) is installed in the first sliding block (8), the clamping block (9) consists of a rectangular block (901) and a right-angle triangular block (902), the bottom of the rectangular block (901) is fixedly connected with the top of the right-angle triangular block (902), and the length of the right-angle triangular block (902) is larger than that of the rectangular block (901); the widths of the right-angle triangular block (902), the rectangular block (901) and the butt joint hole (5) are the same; the clamping block (9) can be clamped with the butt joint hole (5); the lower die (2) is provided with a driving assembly, and the driving assembly is used for driving the clamping block (9) to be separated from the butt joint hole (5);
the driving assembly comprises an air cylinder (10), the air cylinder (10) is fixedly connected with the lower die (2), an output shaft of the air cylinder (10) is fixedly connected with a push plate (11), the push plate (11) is in sliding connection with the lower die (2) in the left-right direction, and the push plate (11) is positioned on the left side of the butt joint hole (5);
a fixed plate (12) is fixedly connected to the lower die (2), a second sliding block (13) is connected to the fixed plate (12) in a sliding mode in the vertical direction, and a sliding rod (14) is connected to the second sliding block (13) in a sliding mode in the left-right direction; the sliding rod (14) is fixedly connected with a second spring (15) for resetting the sliding rod, and the sliding rod (14) is fixedly connected with an insertion block (16); a slide way (17) is fixedly connected to the fixing plate (12), a slide groove (18) is formed in the slide way (17), the slide groove (18) consists of a transverse groove (181), an inclined groove (182) and a vertical groove (183), the left end of the transverse groove (181) is communicated with the bottom end of the inclined groove (182), and the bottom end of the vertical groove (183) is communicated with the top end of the inclined groove (182); a sliding column (19) is connected in the sliding groove (18) in a sliding manner, and the sliding column (19) is fixedly connected with the inserting block (16); a wedge-shaped block (20) for driving the insertion block (16) to move is arranged on the rear side of the insertion block, and the wedge-shaped block (20) is connected with the fixing plate (12) in a sliding mode in the front-rear direction; and a third spring (21) for resetting the wedge block (20) is fixedly connected to the wedge block.
2. The centrifugal forming device of the concrete hollow square pile according to claim 1, wherein: the clamping block (9) is connected with the first sliding block (8) in a sliding mode in the vertical direction, a fourth spring (22) is fixedly connected to the clamping block (9), the bottom end of the fourth spring (22) is fixedly connected with the first sliding block (8), and the elastic force of the fourth spring (22) is smaller than that of the first spring (7); the left side of the top of the right-angle triangular block (902) is provided with a first inclined plane (23).
3. The centrifugal forming device of the concrete hollow square pile according to claim 1, wherein: the front side and the rear side of the right-angle triangular block (902) are both provided with guide inclined planes (24).
4. The centrifugal forming device for the concrete hollow square pile according to claim 1, characterized in that: and reinforcing ribs (25) are fixedly connected to the upper die (1) and the lower die (2).
5. The centrifugal forming device of the concrete hollow square pile according to claim 1, wherein: go up equal fixedly connected with semicircle running wheel (26), two on mould (1) and bed die (2) semicircle running wheel (26) can make up into a complete running wheel.
6. A centrifugal forming process of a concrete hollow square pile, which is suitable for the centrifugal forming device of the concrete hollow square pile as claimed in any one of claims 1 to 5, and is characterized by comprising the following steps:
the method comprises the following steps: firstly, respectively fixedly installing two bases (3) on the left side wall and the right side wall of a lower die (2);
step two: hoisting an upper die (1) right above a lower die (2), and then vertically hoisting downwards;
step three: the clamping block (9) moves to the inner opening of the butt joint hole (5), and the side wall of the butt joint hole (5) can drive the clamping block (9) to move towards one end in the right direction; after the bottom surface of the upper die (1) is attached to the top surface of the lower die (2), the clamping block (9) moves leftwards by a certain distance under the action of the first spring (7), the left side wall of the rectangular block (901) is attached to the left side wall of the butt joint hole (5), and the left end of the right-angle triangular block (902) is located on the left side of the butt joint hole (5);
step four: an external driving device drives a running wheel to rotate at a high speed, so that the running wheel drives an upper die (1) and a lower die (2) to rotate at a high speed, a wedge block (20) can move to one side close to an insert block (16) under the action of centrifugal force, and the wedge block (20) can drive the insert block (16) to be inserted into a butt joint hole (5) and a jack (4) to limit the insert block (9);
step five: after the concrete hollow square pile is formed, the driving assembly drives the clamping block (9) to move rightwards, and after the right side wall of the rectangular block (901) is attached to the right side wall of the butt joint hole (5), a worker can lift the upper die (1).
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