CN111409192A - Production process of PC (polycarbonate) member and hoisting device for PC member - Google Patents
Production process of PC (polycarbonate) member and hoisting device for PC member Download PDFInfo
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- CN111409192A CN111409192A CN202010262540.2A CN202010262540A CN111409192A CN 111409192 A CN111409192 A CN 111409192A CN 202010262540 A CN202010262540 A CN 202010262540A CN 111409192 A CN111409192 A CN 111409192A
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- block
- hoisting
- hole
- component
- hook
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Classifications
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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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
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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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/16—Slings with load-engaging platforms or frameworks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a production process of a PC (polycarbonate) member and a hoisting device for the PC member, relates to the technical field of production of PC members, and achieves the aim of producing the PC member, and the technical scheme is as follows: step one, matching a mold and installing a template; step two, installing reinforcing mesh sheets and pouring surface concrete; step three, mounting a heat insulation plate, mounting a steel bar framework, mounting a supporting point and mounting an embedded part; step four, pouring concrete, maintaining and removing the formwork; wherein the components are cured by low-temperature steamSteam curing, standing still, heating, keeping constant temperature and cooling, wherein the standing still is calculated from the completion of concrete pouring and tamping, and the heating speed is not more than 15 ℃/h; the temperature is 55 +/-2 ℃ in a constant temperature period; the temperature is not suitable to be lower than 10 ℃/h, and the steam curing is as follows:
and fifthly, hoisting the component.
Description
Technical Field
The invention relates to the technical field of PC component production, in particular to a production process of a PC component and a hoisting device for the PC component.
Background
With the development of fabricated buildings, the demand for PC members (concrete precast members) has increased greatly, and the corresponding conventional cast-in-place concrete requires site molding, site pouring and site maintenance. The concrete prefabricated member is widely applied to the fields of buildings, traffic, water conservancy and the like, and plays an important role in national economy. It is therefore desirable to provide a process for producing PC components.
Disclosure of Invention
The invention aims to provide a production process of a PC component, which can achieve the aim of producing the PC component.
The technical purpose of the invention is realized by the following technical scheme:
a production process of a PC component comprises the following steps:
step one, matching a mold and installing a template;
step two, installing reinforcing mesh sheets and pouring surface concrete;
step three, mounting a heat insulation plate, mounting a steel bar framework, mounting a supporting point and mounting an embedded part;
step four, pouring concrete, maintaining and removing the formwork;
the components are cured by low-temperature steam, steam curing is performed, and the four stages of standing, temperature rising, constant temperature and temperature lowering are performed, wherein the standing is calculated from the completion of the concrete pouring and tamping, and the temperature rising speed is not more than 15 ℃/h; the temperature is 55 +/-2 ℃ in a constant temperature period; the temperature is not suitable to be lower than 10 ℃/h, and the steam curing is as follows:
and fifthly, hoisting the component.
By adopting the technical scheme, the PC member is manufactured according to the steps, steam curing is divided into four stages, shrinkage cracks caused by hydration heat of cement in concrete are reduced, the PC member can reach the required strength within the specified time, and the PC member is lifted to the required position after being manufactured.
The invention also provides a PC member hoisting device, which comprises a hoisting crane and a hoisting assembly connected with the hoisting crane and contacted with the member, wherein the hoisting assembly is used for hoisting the member, the hoisting assembly comprises a plurality of bearing blocks arranged at the bottom of the member, each bearing block is distributed along the length direction of the member, adjacent bearing blocks are connected through a connecting rope, the connecting rope is distributed along the length direction of the member, two sides of each bearing block are respectively provided with a first supporting rod extending to the edge of the member, the first supporting rods are distributed perpendicular to the length direction of the member, the bearing blocks close to two sides of the length direction of the member are respectively distributed with a second supporting rod along the length direction of the member, one end of each second supporting rod far away from the bearing blocks extends to the edge of the member, one ends of the first supporting rod and the second supporting rod far away from the bearing blocks are respectively provided with a first connecting rod and a second connecting rod which are vertically upwards and are abutted against the side edge of the member, the upper end of the second connecting rod is provided with pull ropes, and the two pull ropes extend to the upper end of the component and are connected with a hook on the travelling crane through a connecting piece;
the hoisting assembly further comprises a threaded hole which is arranged at the upper end of the component in advance, a hoisting rod is connected in the threaded hole in a threaded manner, the upper end of the hoisting rod is connected with a hoisting ring through a connecting rope, the hoisting ring is connected with a hook on a crane, and the distance from the hoisting ring to the component after the hoisting ring is connected with the hook is equal to the distance from the hook to the component when the stay rope is connected with the hook.
Preferably: the connecting piece comprises connecting rings arranged at one ends of the two pull ropes far away from the second connecting rod, each connecting ring penetrates through the hook, the upper end of the hook is in threaded connection with a moving block, and a sealing plate for sealing a hook inlet is arranged on the moving block.
Preferably: the connecting rope is detachably connected with the bearing block, the bearing block is provided with a connecting block, the connecting block is provided with a U-shaped hole for the connecting rope to enter, one end of the connecting rope penetrates through one inner hole of the U-shaped hole and then penetrates out of the other inner hole and enters the U-shaped hole on the adjacent connecting block, after the connecting rope penetrates through the U-shaped holes on the two adjacent connecting blocks, the two ends of the connecting rope are connected through the first clamping block, the first clamping block is provided with a first embedding hole and a second embedding hole for respectively embedding two ends of the connecting rope, the first embedding hole and the second embedding hole are tapered holes, the connecting rope penetrates through one end with larger taper of the tapered holes, the upper end of the first clamping block is provided with a second clamping block, the second clamping block is provided with a third embedding hole and a fourth embedding hole which correspond to the first embedding hole and the second embedding hole, and the first clamping block is provided with a limiting part for fixing the second clamping block on the first clamping block.
Preferably: the locating part includes two threaded rods that set up on first fixture block and wear out the second fixture block, two the threaded rod is located the both sides in first embedding hole and second embedding hole, the threaded rod has the latch segment in the end threaded connection who wears out the second fixture block and deviate from first fixture block.
Preferably: after the connecting rope penetrates out of the two U-shaped holes, knots of which the sizes are larger than the sizes of the hole openings of the U-shaped holes are tied at the two ends of the connecting rope.
Preferably: the bearing block is worn out to the one end that first bracing piece kept away from the head rod, and has the touch piece of contradicting with the bearing block in the one end threaded connection who wears out.
Preferably: the regulating block is placed at the upper end of the bearing block, an embedded groove for embedding the upper end of the bearing block is formed in the lower end of the regulating block, and a limiting groove for embedding the first supporting rod is formed in the regulating block.
Preferably: and two adjacent bearing blocks are connected through an extension spring.
Preferably: the one end threaded connection that first bracing piece was equipped with the touch multitouch has a card section of thick bamboo, and when touch multitouch contradicted with the carrier block, a card section of thick bamboo was equipped with the spacing section of thick bamboo of contradicting with the carrier block towards the one end of touch multitouch, the internal diameter of a spacing section of thick bamboo is greater than the size of touch multitouch.
In conclusion, the invention has the following beneficial effects: and (3) manufacturing the PC member according to the steps, wherein steam curing is divided into four stages, so that shrinkage cracks caused by hydration heat of cement in concrete are reduced, the PC member can reach the required strength within a specified time, and after the PC member is manufactured, the PC member is lifted to the required position.
Drawings
FIG. 1 is a schematic structural view of the present embodiment;
FIG. 2 is a schematic structural diagram of an adjusting block according to the present embodiment;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
FIG. 4 is a schematic structural view of the present embodiment for embodying the embedded groove;
fig. 5 is an enlarged schematic view of a portion B in fig. 4.
In the figure: 1. a member; 11. a bearing block; 111. connecting blocks; 112. a U-shaped hole; 113. a first clamping block; 114. a first insertion hole; 115. a second insertion hole; 116. a second fixture block; 117. a third insertion hole; 118. a fourth insert hole; 119. a threaded rod; 1191. a locking block; 12. connecting ropes; 121. knotting; 13. a first support bar; 131. a first connecting rod; 132. a contact block; 133. an adjusting block; 134. a groove is embedded; 135. a limiting groove; 14. a second support bar; 141. a second connecting rod; 142. pulling a rope; 143. a connecting ring; 15. hooking; 151. a moving block; 152. a closing plate; 16. a threaded hole; 161. lifting the suspender; 162. connecting a rope; 163. lifting a lifting ring; 17. an extension spring; 18. clamping the cylinder; 181. a limiting cylinder.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A production process of a PC component comprises the following steps:
step one, matching a mold and installing a template; in order to effectively prevent the deformation of the template and improve the rigidity, the thickness of the steel plate used for template processing is not less than 6mm, the steel plate is cut by laser and machined when matched with a die, and the precision of the size of the component is ensured. After the template is processed, the back of the template is subjected to paint spraying and rust preventing treatment in time, the contact surface of the template and concrete is polished and cleaned in time, and a protective agent is coated to prevent the template from being corroded. All templates are numbered on the outer side, and information such as dimension specifications is marked, so that the templates can be conveniently searched and used in construction in the future.
Step two, installing reinforcing mesh sheets and pouring surface concrete;
step three, mounting a heat insulation plate, mounting a steel bar framework, mounting a supporting point and mounting an embedded part;
step four, pouring concrete, maintaining and removing the formwork;
the components are cured by low-temperature steam, steam curing is performed, and the four stages of standing, temperature rising, constant temperature and temperature lowering are performed, wherein the standing is calculated from the completion of the concrete pouring and tamping, and the temperature rising speed is not more than 15 ℃/h; the temperature is 55 +/-2 ℃ in a constant temperature period; the temperature is not suitable to be lower than 10 ℃/h, and the steam curing is as follows:
after the concrete of the component is poured, removing a part of the fixed magnet fixing devices around the component template for turnover, wherein at least two magnets are still reserved on each side, and other magnets enter a curing room after being removed; the strength of the concrete of the member must reach over 75 percent of the designed strength, and the member can be disassembled and lifted; the member is lifted to about 10cm away from a die table at a lifting station, and an operator prepares tools such as a rubber hammer and the like to be in place; the template around the component is knocked downwards to be separated from the component by a rubber hammer, the force is not too large, and the template is prevented from deforming and the corner of the component is prevented from being damaged; and conveying the detached template to a designated cleaning place by using a trolley to clean in time, and removing impurities such as rust spots, oil spots, concrete and the like.
And fifthly, hoisting the component, wherein the component is hoisted slowly during hoisting, so that the component is ensured to be stable and not to be subjected to violent shaking.
And (3) manufacturing the PC member according to the steps, wherein steam curing is divided into four stages, so that shrinkage cracks caused by hydration heat of cement in concrete are reduced, the PC member can reach the required strength within a specified time, and after the PC member is manufactured, the PC member is lifted to the required position.
Referring to fig. 1 and 2, a PC member lifting device comprises a lifting crane for lifting a member 1 and a lifting assembly contacted with the lifting crane and connected with the member 1, wherein the lifting assembly comprises a plurality of bearing blocks 11 arranged at the bottom of the member 1, each bearing block 11 is distributed along the length direction of the member 1 and is in a straight line distribution, two adjacent bearing blocks 11 are connected through a connecting rope 12, the connecting rope 12 is distributed along the length direction of the member 1, two sides of each bearing block 11 are respectively provided with a first supporting rod 13 extending to the edge of the member 1, the first supporting rods 13 are distributed perpendicular to the length direction of the member 1, the bearing blocks 11 close to two sides of the length direction of the member 1 are distributed along the length direction of the member 1 with second supporting rods 14, one end of each second supporting rod 14 far away from the bearing blocks 11 extends to the edge of the member 1, and at this time, the second supporting rods 14 and the connecting rope 12 can be located on the same straight line, one end of each of the first support rod 13 and the second support rod 14, which is far away from the bearing block 11, is provided with a first connecting rod 131 and a second connecting rod 141 which are vertically upward and abut against the side edge of the component 1, at the moment, the first connecting rod 131 and the second connecting rod 141 are positioned on each side edge of the component 1 to limit the left and right movement of the component 1, the upper end of the second connecting rod 141 is provided with a pull rope 142, and the two pull ropes 142 extend to the upper end of the component 1 and are connected with a hook 15 on a traveling crane through a connecting piece; after the pull cord 142 is now connected to the hanger 15, the hanger 15 can lift the component 1 through the carrier block 11. But before that: the hoisting assembly further comprises a threaded hole 16 which is preset at the upper end of the member 1, a hoisting rod 161 is connected to the threaded hole 16 in an internal thread manner, a hoisting ring 163 is connected to the upper end of the hoisting rod 161 through a connecting rope 162, the hoisting ring 163 is connected with a hook 15 on a travelling crane, the distance from the hoisting ring 163 to the member 1 after the connection with the hook 15 is equal to the distance from the hook 15 to the member 1 when the pull rope 142 is connected with the hook 15, and therefore the hook 15 can drive the pull rope 142 and the hoisting ring 163 to move upwards together. The hoisting device can also be used in step five and can hoist heavy prefabricated parts, or can be directly loaded after the prefabricated parts are produced.
As shown in fig. 1 and 2, in the process of lifting the component 1, the lifting rod 161 is firstly screwed into the threaded hole 16, then the lifting ring 163 is connected with the hook 15, the component 1 is lifted by a certain height through the hook 15, then the bearing block 11 is placed at the lower end of the component 1 and is connected with the hook 15 through the pull rope 142, along with the continuous rising of the hook 15, the hook 15 can drive the pull rope 142 and the lifting ring 163 to rise together, at the moment, the upper end and the lower end of the component 1 are subjected to a rising force together, so that the damage of the component to the component 1 during the lifting of the component 1 is reduced, and the component 1 is lifted stably during the lifting. And when the weight of the member 1 is large and the lifting point on the upper surface of the member 1 cannot be supported for a long time, the lifting structure at the bottom of the member 1 can further provide supporting force for the member 1, and the lifting of the member 1 is ensured.
As shown in fig. 1 and 2, the connecting member includes a connecting ring 143 disposed at an end of the two pulling ropes 142 away from the second connecting rod 141, each connecting ring 143 penetrates the hook 15, each connecting ring 143 is then hooked on the hook 15, and then in order to improve the stability of the connection between the hook 15 and the connecting ring 143 during the lifting process, a moving block 151 is threadedly connected to the upper end of the hook 15, and a closing plate 152 for closing an inlet of the hook 15 is disposed on the moving block 151. The operator only needs to rotate the moving block 151 to make the closing plate 152 on the moving block 151 close the entrance of the hook 15, and at this time, the closing plate 152 blocks the connecting ring 143 from moving out of the hook 15.
As shown in fig. 2 and 3, in order to facilitate the bearing block 11 to bear the components 1 with different lengths, the connecting rope 12 is detachably connected to the bearing block 11, the bearing block 11 is provided with a connecting block 111, the connecting block 111 is provided with a U-shaped hole 112 for the connecting rope 12 to enter, one end of the connecting rope 12 penetrates through one inner hole of the U-shaped hole 112, penetrates out of the other inner hole and enters the U-shaped hole 112 on the adjacent connecting block 111, one end of the connecting rope 12 penetrates out of the U-shaped holes 112 on the two adjacent connecting blocks 111, at this time, the two connecting blocks 111 are oppositely arranged, two ends of the connecting rope 12 are connected by a first clamping block 113, the first clamping block 113 is provided with a first insertion hole 114 and a second insertion hole 115 for inserting two ends of the connecting rope 12 respectively, the first insertion hole 114 and the second insertion hole 115 are tapered holes, the end of the connecting rope 12 with a larger taper passes through the tapered hole, the upper end of the first clamping block, the second engaging portion 116 is provided with a third engaging hole 117 and a fourth engaging hole 118 corresponding to the first engaging hole 114 and the second engaging hole 115, when two ends of the connecting string 12 are engaged with the first engaging hole 114 and the second engaging hole 115, respectively, the second engaging portion 116 is placed on the first engaging portion 113, and at this time, the two ends of the connecting string 12 are pressed into the first engaging hole 114 and the second engaging hole 115 through the third engaging hole 117 and the fourth engaging hole 118 of the second engaging portion 116, respectively, and the first engaging portion 113 is provided with a position limiting member for fixing the second engaging portion 116 on the first engaging portion 113. At this time, the connecting rope 12 can be detached from the bearing block 11 through the first fixture block 113 and the second fixture block 116, so as to replace the connecting rope 12 with a length, and further change the distance between the bearing blocks 11, and further enable the bearing block 11 to support the members 1 with different lengths. The first and second insertion holes 114 and 115 are tapered to reduce the movement of the connection string 12 within the first and second insertion holes 114 and 115.
As shown in fig. 2 and fig. 3, the limiting member includes two threaded rods 119 disposed on the first latch 113 and penetrating through the second latch 116, the two threaded rods 119 are disposed at two sides of the first insertion hole 114 and the second insertion hole 115, a locking block 1191 is threadedly connected to one end of the threaded rod 119 penetrating through the second latch 116 and deviating from the first latch 113, at this time, the locking block 1191 is rotated to one side of the second latch 116 deviating from the first latch 113, at this time, the locking block 1191 will limit the positions of the first latch 113 and the second latch 116, the structure is simple, the operation is convenient, in addition, the positions of the connecting rope 12 on the first latch 113 and the second latch 116 can be adjusted, and further, the distance between the two bearing blocks 11 is changed.
After the connecting rope 12 passes through the two U-shaped holes 112, as shown in fig. 2 and 3, knots 121 with a size larger than the size of the hole of the U-shaped hole 112 are tied at both ends of the connecting rope 12. At this time, the size of the knot 121 may be larger than the diameters of the first insertion hole 114 and the second insertion hole 115, so that the situation that the connection cord 12 moves out of the first insertion hole 114 and the second insertion hole 115 is reduced, the connection cord 12 is further reduced to be removed from the bearing block 11, and after the first fixture block 113 and the second fixture block 116 are removed, the distance between the two bearing blocks 11 is maximized due to the presence of the knot 121.
As shown in fig. 4 and 5, one end of the first supporting rod 13, which is far away from the first connecting rod 131, penetrates through the bearing block 11, and an abutting block 132 abutting against the bearing block 11 is connected to the penetrating end through a thread. At this time, the position of the first supporting rod 13 penetrating out of the bearing block 11 can be adjusted by the first supporting rod 13 according to the thickness of the component 1, so that the first connecting rod 131 abuts against the side edge of the component 1, and then the first connecting rod 131 is locked at the side edge of the component 1 through the abutting block 132.
As shown in fig. 4 and 5, in order to fix the position of the contact block 132, a clamping cylinder 18 is connected to one end of the first supporting rod 13, where the contact block 132 is disposed, when the contact block 132 abuts against the bearing block 11, the first connecting rod 131 abuts against the side of the component 1, so that the position of the first supporting rod 13 is fixed, at this time, a limiting cylinder 181 abutting against the bearing block 11 is disposed at one end of the clamping cylinder 18 facing the contact block 132, the inner diameter of the limiting cylinder 181 is greater than the size of the contact block 132, a user rotates the clamping cylinder 18 to make the limiting cylinder 181 abut against the bearing block 11, at this time, the limiting cylinder 181 and the clamping cylinder 18 provide a further pulling force to the first supporting rod 13 toward the contact block 132, so that the threaded connection between the contact block 132 and the first supporting rod 13 is locked, and the use requirement is met.
As shown in fig. 2 and 4, when the thickness of the component 1 changes, in order to meet the use requirement, an adjusting block 133 is placed at the upper end of the bearing block 11, an insertion groove 134 for inserting the upper end of the bearing block 11 is formed at the lower end of the adjusting block 133, and a limit groove 135 for inserting the first support rod 13 is formed in the adjusting block 133. The adjusting block 133 increases the contact area between the bearing block 11 and the member 1, so that the member 1 can be stably lifted.
As shown in fig. 2, two adjacent bearing blocks 11 are connected by a tension spring 17. The length of the original state of the extension spring 17 is less than the length of the connection rope 12 between the two bearing blocks 11 when being straightened, so that the bearing blocks 11 exert opposite force on the bearing blocks 11 in the use process, further the abutting force of the second connecting rod 141 and the side edge of the component 1 is increased, and after the extension spring 17 is used, the distance between the bearing blocks 11 can be reduced under the action of the extension spring, and a user can conveniently move the bearing blocks 11 out of the lower end of the component 1.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A production process of a PC component is characterized by comprising the following steps:
step one, matching a mold and installing a template;
step two, installing reinforcing mesh sheets and pouring surface concrete;
step three, mounting a heat insulation plate, mounting a steel bar framework, mounting a supporting point and mounting an embedded part;
step four, pouring concrete, maintaining and removing the formwork;
the components are cured by low-temperature steam, steam curing is performed, and the four stages of standing, temperature rising, constant temperature and temperature lowering are performed, wherein the standing is calculated from the completion of the concrete pouring and tamping, and the temperature rising speed is not more than 15 ℃/h; the temperature is 55 +/-2 ℃ in a constant temperature period; the temperature is not suitable to be lower than 10 ℃/h, and the steam curing is as follows:
and fifthly, hoisting the component.
2. A hoisting device for PC components is characterized in that: the hoisting assembly comprises a hoisting travelling crane for hoisting a member (1) and a hoisting assembly which is in contact with the member (1) and is connected with the hoisting travelling crane, wherein the hoisting assembly comprises a plurality of bearing blocks (11) arranged at the bottom of the member (1), each bearing block (11) is distributed along the length direction of the member (1), the adjacent bearing blocks (11) are connected through a connecting rope (12), the connecting rope (12) is distributed along the length direction of the member (1), two sides of each bearing block (11) are respectively provided with a first supporting rod (13) extending to the edge of the member (1), the first supporting rods (13) are distributed perpendicular to the length direction of the member (1), second supporting rods (14) are distributed along the length direction of the member (1) and are close to the bearing blocks (11) at two sides of the length direction of the member (1), one end, far away from the bearing blocks (11), of each second supporting rod (14) extends to the edge of the member (1), one ends, far away from the bearing block (11), of the first supporting rod (13) and the second supporting rod (14) are respectively provided with a first connecting rod (131) and a second connecting rod (141) which are vertically upward and abut against the side edge of the component (1), the upper end of the second connecting rod (141) is provided with pull ropes (142), and the two pull ropes (142) extend to the upper end of the component (1) and are connected with a hook (15) on a travelling crane through a connecting piece;
the hoisting assembly further comprises a threaded hole (16) which is arranged at the upper end of the member (1) in advance, a hoisting rod (161) is connected to the threaded hole (16) in an internal thread manner, a hoisting ring (163) is connected to the upper end of the hoisting rod (161) through a connecting rope (162), the hoisting ring (163) is connected with a hook (15) on a travelling crane, and the distance from the hoisting ring (163) to the member (1) after being connected with the hook (15) is equal to the distance from the hook (15) to the member (1) when the pulling rope (142) is connected with the hook (15).
3. The PC component lifting device of claim 2, wherein: the connecting piece comprises connecting rings (143) which are arranged at one ends, far away from the second connecting rod (141), of the two pull ropes (142), each connecting ring (143) penetrates through the hook (15), the upper end of the hook (15) is in threaded connection with a moving block (151), and a closing plate (152) for closing an inlet of the hook (15) is arranged on the moving block (151).
4. The PC component lifting device of claim 2, wherein: the connecting rope (12) is detachably connected with the bearing block (11), a connecting block (111) is arranged on the bearing block (11), a U-shaped hole (112) for the connecting rope (12) to enter is formed in the connecting block (111), one end of the connecting rope (12) penetrates into one inner hole of the U-shaped hole (112) and penetrates out of the other inner hole and enters the U-shaped hole (112) in the adjacent connecting block (111), after penetrating out of the U-shaped holes (112) in the two adjacent connecting blocks (111), two ends of the connecting rope (12) are connected through a first clamping block (113), a first embedding hole (114) and a second embedding hole (115) for respectively embedding two ends of the connecting rope (12) are formed in the first clamping block (113), the first embedding hole (114) and the second embedding hole (115) are conical holes, and the connecting rope (12) penetrates out of one end with larger conical hole, the upper end of the first clamping block (113) is provided with a second clamping block (116), the second clamping block (116) is provided with a third insertion hole (117) and a fourth insertion hole (118) which correspond to the first insertion hole (114) and the second insertion hole (115), and the first clamping block (113) is provided with a limiting piece for fixing the second clamping block (116) on the first clamping block (113).
5. The PC component lifting device of claim 4, wherein: the limiting piece comprises two threaded rods (119) which are arranged on the first clamping block (113) and penetrate through the second clamping block (116), the two threaded rods (119) are located on two sides of the first insertion hole (114) and the second insertion hole (115), and a locking block (1191) is connected to one end, penetrating through the second clamping block (116) and deviating from the first clamping block (113), of each threaded rod (119) in a threaded mode.
6. The PC component lifting device of claim 4, wherein: after the connecting rope (12) penetrates out of the two U-shaped holes (112), knots (121) with sizes larger than the sizes of the holes of the U-shaped holes (112) are tied at the two ends of the connecting rope (12).
7. The PC component lifting device of claim 2, wherein: one end, far away from the first connecting rod (131), of the first supporting rod (13) penetrates out of the bearing block (11), and a contact block (132) abutting against the bearing block (11) is connected to the penetrating end in a threaded mode.
8. The PC component lifting device of claim 2, wherein: regulating block (133) have been placed to carrier block (11) upper end, embedded groove (134) that supply carrier block (11) upper end embedding are seted up to regulating block (133) lower extreme, spacing groove (135) that supply first bracing piece (13) embedding are seted up on regulating block (133).
9. The PC component lifting device of claim 2, wherein: two adjacent bearing blocks (11) are connected through an extension spring (17).
10. The PC component lifting device of claim 7, wherein: first bracing piece (13) have a card section of thick bamboo (18) at the one end threaded connection who is equipped with conflict piece (132), when conflict piece (132) contradict with carrier block (11), a card section of thick bamboo (18) are equipped with spacing section of thick bamboo (181) of contradicting with carrier block (11) towards the one end of conflict piece (132), the internal diameter of spacing section of thick bamboo (181) is greater than the size of conflict piece (132).
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