A construction mold for an assembled funnel opening of a concrete structure silo

Abstract

The present invention discloses a construction mold for an assembled funnel opening of a concrete structure silo, which includes a bottom plate with a square frame structure, an inner ring side plate and an outer ring side plate. The bottom plate, the inner ring side plate and the outer ring side plate cooperate to surround and form a pouring cavity. A side plate positioning structure for positioning the installation positions of the inner ring side plate and the outer ring side plate is provided at the edge position of the bottom plate. The inner ring side plate and the outer ring side plate are fixedly installed through fasteners located outside the pouring cavity. The present invention adopts an assembled construction mold, which can prefabricate the funnel opening first, and then integrally install the funnel opening after reaching a certain strength, and then construct other parts. The disassembly and installation are convenient, the construction intensity is low, and the operation is simple. It can improve labor productivity, speed up the construction progress, and at the same time, repeated use can reduce the project cost. The prefabrication in advance ensures the forming quality of the funnel opening and the installation quality of the embedded bolts, thereby improving the project quality.

Description

Technical Field

[0001] The present invention relates to the field of engineering construction such as coal, mines, smelting, building materials, warehousing, etc., and particularly relates to a construction mold for an assembled funnel opening of a concrete structure silo. Background Art

[0002] With the increasing scale of modern industry, the improvement of industrial production automation, the requirements of national environmental protection policies, and the need to save land, in the production and transportation processes of industries such as mines, smelting, building materials, and warehousing, the storage and transfer of materials generally use concrete structure silos. The concrete silos for storing materials have the characteristics of convenient storage, being conducive to improving the degree of automation, being environmentally friendly during the production and transportation processes when fully enclosed, saving land when the silos develop towards being tall and large, and the concrete structure having better durability and low maintenance cost and simplicity.

[0003] The concrete silo structure generally consists of three parts: a silo 16, a funnel 15, and a funnel opening 14. A silo inlet 17 is provided at the top of the silo 16, and there is a group of embedded bolts 13 below the funnel opening 14 of the concrete silo for the installation and fixation of feeding equipment. For details, see the schematic diagram of the concrete structure silo, which is attached Figure 28 .

[0004] Now, the concrete silos for material storage and process production are developing towards being large-sized. In one project, there are numerous silos with the same size, ranging from dozens to hundreds.

[0005] In the past engineering construction, the traditional construction methods of on-site formwork support, installation of embedded bolts, steel bar binding, and concrete pouring were adopted for each part of the concrete silo. All the work of the traditional construction method needed to be completed by workers on the scaffold. There were problems such as difficult formwork support and reinforcement, poor formwork forming quality, inaccurate bolt installation position, low installation accuracy, a certain angle between the funnel wall and the funnel opening wall, and difficult to ensure the quality of concrete vibration in the construction of the funnel opening part. Therefore, our unit invented an assembled funnel opening construction technology and a prefabricated processing mold for the funnel opening, which solved this problem. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: to provide a construction mold for an assembled funnel opening of a concrete structure silo, to solve the problems such as difficult construction and difficult quality assurance of the funnel opening of the concrete structure silo, so as to improve labor productivity, improve project quality, reduce project costs, and speed up the construction progress.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A construction mold for an assembled funnel opening of a concrete structure silo, comprising a bottom plate with a square frame structure, an inner ring side plate and an outer ring side plate. The inner ring side plate is vertically arranged on the inner ring edge of the square frame structure perpendicular to the bottom plate, and the outer ring side plate is vertically arranged on the outer ring edge of the square frame structure perpendicular to the bottom plate. The bottom plate, the inner ring side plate and the outer ring side plate cooperate to form a casting cavity. The bottom plate can be an integral square frame bottom plate or composed of multiple spliced bottom plates. When using spliced bottom plates, it can be spliced by two L-shaped spliced bottom plates or four rectangular spliced bottom plates, or more spliced bottom plates. The edge position of the bottom plate is provided with a side plate positioning structure for positioning the installation positions of the inner ring side plate and the outer ring side plate. Both the inner ring side plate and the outer ring side plate can be rectangular tubular structural members, or can be spliced by L-shaped plates or spliced by four or more spliced plates. The inner ring side plate and the outer ring side plate are fixedly installed through fasteners located outside the casting cavity.

[0009] The bottom plate mentioned above includes two first bottom plates and two second bottom plates. The first bottom plates are arranged parallel to each other at intervals, and the second bottom plates are parallel to each other and placed between the first bottom plates. And a bottom plate positioning structure for defining the installation positions of the two is provided between the first bottom plate and the second bottom plate. The first bottom plate and the second bottom plate are spliced together into a square frame structure by lapping through the bottom plate positioning structure.

[0010] The bottom plate positioning structure includes a positioning groove dug on the first bottom plate and a positioning protrusion fixed at the end of the second bottom plate. The installation position of the second bottom plate on the first bottom plate is determined by the positioning protrusion being stuck in the positioning groove.

[0011] A number of embedded bolt installation holes penetrating the bottom plate are provided in the casting cavity, and at least one embedded bolt placement hole penetrates the lapping position of the first bottom plate and the second bottom plate.

[0012] Embedded bolts are installed in the embedded bolt holes. One end of the embedded bolt penetrates the bottom plate and a nut is screwed on this end to prevent the embedded bolt from detaching from the bottom plate. The first bottom plate and the second bottom plate are fixed together by the embedded bolt penetrating the lapping position of the first bottom plate and the second bottom plate.

[0013] The outer ring side plate includes two first outer ring side plates and two second outer ring side plates. The two first outer ring side plates are parallel to each other and are positioned and installed through outer ring grooves provided on the bottom plate and the bottom of the first outer ring side plates that cooperate with each other. The two second outer ring side plates are parallel to each other and are clamped between the first outer ring side plates and perpendicular to the first outer ring side plates. Sliding grooves for cooperating to define the installation position of the second outer ring side plate are provided on the plate surfaces of the two first outer ring side plates. The ends of the second outer ring side plates are slidably clamped in the sliding grooves. Bolt installation holes are provided on the plate surface of the first outer ring side plate outside the casting cavity. The two first outer ring side plates are fixed together by a first double-headed bolt passing through the bolt installation holes.

[0014] On the surface of the bottom plate located outside the pouring cavity, there are positioning blocks that cooperate with the sliding grooves to define the installation position of the second outer ring.

[0015] The inner ring side plates include two first inner ring side plates and two second inner ring side plates. The two first inner ring side plates are arranged parallel to each other at intervals. The two second inner ring side plates are arranged parallel to each other at intervals between the two first inner ring side plates, and the second inner ring side plates are perpendicular to the first inner ring side plates. At the bottom of the first inner ring side plates and the second inner ring side plates and the inner edge position of the bottom plate, there are inner ring grooves that cooperate with each other to achieve positioning and installation. On one side wall of the surfaces of the first inner ring side plates and the second inner ring side plates located outside the pouring cavity, there are vertical ear plates perpendicular to the corresponding side plates. The vertical ear plates on adjacent first inner ring side plates and second inner ring side plates overlap each other. A positioning bolt is provided through the overlapping vertical ear plates to fix the first inner ring side plates and the second inner ring side plates together. At the bottom of both the first inner ring side plates and the second inner ring side plates, there are parallel ear plates parallel to the surfaces of the corresponding side plates. The parallel ear plates extend along the surfaces of the corresponding plates until they extend out of the bottom of the bottom plate. On the outer ring side plates, there are outer ring ear plates parallel to the parallel ear plates. The first inner ring side plates and the second inner ring side plates are fixed on the outer ring side plates through second double-headed bolts passing through the outer ring side plates and the parallel ear plates.

[0016] The second double-headed bolts are located at the bottom of the bottom plate.

[0017] Both the first inner ring side plates and the second inner ring side plates are spliced by a number of splicing side plates.

[0018] In the specific operation process of the present invention, the following steps are carried out in sequence: manufacturing the funnel mold → installing the bottom mold → installing the embedded bolts → assembling the side mold → installing the funnel steel bars → pouring concrete → prefabricating and positioning and installing the funnel.

[0019] The beneficial effects of the present invention are as follows: The present invention adopts an assembled construction mold, which can prefabricate the funnel opening first, and then integrally install the funnel opening after reaching a certain strength, and then construct other parts. Moreover, the mold can be reused to save costs. By processing the installation holes for the embedded bolts on the mold bottom plate, the precise installation of the embedded bolts can be realized, avoiding the binding of steel bars and working on the scaffolding. The outer ring side plates and the bottom are positioned through grooves. The inner ring side plates are composed of multiple pieces spliced together, which are convenient for disassembly and installation, with low construction intensity and simple operation. It can improve labor productivity, speed up the construction progress, and at the same time, repeated utilization can reduce the project cost. The prefabrication in advance ensures the forming quality of the funnel opening and the installation quality of the embedded bolts, thus improving the project quality. Description of the Drawings

[0020] Figure 1 Figure 1 It is a schematic diagram of the overall structure installation of the present invention.

[0021] Figure 2 In the present invention Figure 1 is a cross-sectional view taken along the A-A direction in the present invention.

[0022] Figure 3 In the present invention Figure 1 is a cross-sectional view taken along the B-B direction in the present invention.

[0023] Figure 4 is a schematic structural view of the first bottom plate in the present invention.

[0024] Figure 5 In the present invention Figure 4 is a side view.

[0025] Figure 6 In the present invention Figure 4 is a bottom view.

[0026] Figure 7 is a schematic structural view of the second bottom plate in the present invention.

[0027] Figure 8 In the present invention Figure 7 is a bottom view.

[0028] Figure 9 In the present invention Figure 7 is a side view.

[0029] Figure 10 is a schematic structural view of the first outer ring side plate in the present invention.

[0030] Figure 11 In the present invention Figure 10 is a bottom view.

[0031] Figure 12 In the present invention Figure 10 is a side view.

[0032] Figure 13 is a schematic structural view of the second outer ring side plate in the present invention.

[0033] Figure 14 In the present invention Figure 13 is a bottom view.

[0034] Figure 15 In the present invention Figure 13 is a side view.

[0035] Figure 16 is the first inner ring splicing plate in the present invention.

[0036] Figure 17 In the present invention Figure 16 is a bottom view.

[0037] Figure 18 In the present inventionFigure 16 Side view.

[0038] Figure 19 This is the second inner ring splicing plate in the present invention.

[0039] Figure 20 In the present invention Figure 19 Bottom view.

[0040] Figure 21 In the present invention Figure 19 Side view.

[0041] Figure 22 This is the third inner ring splicing plate in the present invention.

[0042] Figure 23 In the present invention Figure 22 Bottom view.

[0043] Figure 24 In the present invention Figure 22 Side view.

[0044] Figure 25 This is the fourth inner ring splicing plate in the present invention.

[0045] Figure 26 In the present invention Figure 25 Bottom view.

[0046] Figure 27 In the present invention Figure 25 Side view.

[0047] Figure 28 Schematic diagram of a concrete structure silo in the prior art.

[0048] Markings in the diagram: 1. First base plate, 101. Positioning groove, 102. Inner groove of first base plate, 103. Outer groove of first base plate, 104. Positioning block, 2. Second base plate, 201. Positioning protrusion, 202. Inner groove of second base plate, 3. First outer ring side plate, 301. Slide groove, 302. First outer ring ear plate, 303. First bolt mounting hole, 4. Outer ring side plate, 401. Second outer ring ear plate, 5. First inner ring splicing plate, 501. First inner ring side plate groove, 502. First inner ring straight ear plate, 503. First inner ring L-shaped ear plate, 6. Second inner ring splicing plate, 601. Second inner ring straight ear plate, 602. 02. First inner ring parallel ear plate, 603. Second inner ring L-shaped ear plate, 604. Second inner ring side plate groove, 7. Third inner ring splicing plate, 701. Third inner ring side plate groove, 702. Third inner ring straight ear plate, 703. Third inner ring L-shaped ear plate, 704. Second inner ring parallel ear plate, 8. Fourth inner ring splicing plate, 801. Fourth inner ring L-shaped ear plate, 802. Fourth inner ring straight ear plate, 803. Fourth inner ring side plate groove, 9. First stud bolt, 10. Positioning bolt, 11. Second stud bolt, 12. Gasket, 13. Embedded bolt, 14. Funnel mouth, 15. Funnel, 16. Silo, 17. Silo entrance. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] A construction mold for an assembled funnel mouth of a concrete structure silo, comprising a bottom plate, an inner ring side plate and an outer ring side plate of a U-shaped structure, wherein the inner ring side plate is perpendicular to the bottom plate and is arranged at the inner ring edge of the U-shaped structure, and the outer ring side plate is perpendicular to the bottom plate and is arranged at the outer ring edge of the U-shaped structure, and the bottom plate, the inner ring side plate and the outer ring side plate cooperate to form a casting cavity, and a side plate positioning structure for positioning the installation position of the inner ring side plate and the outer ring side plate is arranged at the edge position of the bottom plate, and the inner ring side plate and the outer ring side plate are fixedly installed by fasteners located outside the casting cavity.

[0051] The bottom plate includes two first bottom plates 1 and two second bottom plates 2.

[0052] The first bottom plate 1 is made of Q235 steel plate with a length of 1500 mm, a width of 310 mm and a thickness of 16 mm. On both sides of the first bottom plate 1 in the length direction, grooves with a width of 5 mm and a cut-off part of 8 mm thickness are processed, namely the first bottom plate inner groove 102 and the first bottom plate outer groove 103. On the center line of the first bottom plate in the length direction, a pre-embedded bolt mounting hole 1301 with a diameter of 17 mm is processed. The distance from the pre-embedded bolt mounting hole to the inner edge of the first bottom plate is 75 mm. Five pre-embedded bolt mounting holes with a spacing of 235 mm are processed on the first bottom plate. Square positioning grooves 101 with a side length of 145 mm and a depth of 8 mm are processed at the positions of the two outermost pre-embedded bolt holes. One side of the positioning groove 101 is fitted with the first bottom plate inner groove 102. The distances from the pre-embedded bolt mounting hole 1301 to the two sides of the square positioning groove in the width direction of the first bottom plate are 75 mm and 70 mm respectively. A rectangular block-shaped positioning block 104 is also provided near the edge in the width direction of the first bottom plate.

[0053] The second bottom plate 2 is made of Q235 steel plate with a length of 790 mm, a width of 317 mm and a thickness of 16 mm. Rectangular positioning protrusions 201 are processed on both sides of the second bottom plate in the width direction. The distance from the positioning protrusion 201 to the inner edge of the second bottom plate is 5 mm. The length of the positioning protrusion 201 is 150 mm, the width is 145 mm and the thickness is 8 mm. A pre-embedded bolt mounting hole 1301 with a diameter of 17 mm is also processed on the center line of the second bottom plate. The distance from the pre-embedded bolt mounting hole to the inner edge of the first bottom plate is 75 mm. Five pre-embedded bolt mounting holes 1301 with a spacing of 235 mm are processed on the second bottom plate. The two outermost pre-embedded bolt mounting holes are located on the positioning protrusion 201. A second bottom plate inner groove 202 is processed at the inner edge position of the second bottom plate. The groove width is 5 mm and the cut-off depth is 8 mm.

[0054] The first bottom plates 1 are arranged parallel to each other at intervals. The second bottom plates 2 are parallel to each other and placed between the first bottom plates 1. The first bottom plates 1 and the second bottom plates 2 are lapped together through the cooperation of the positioning grooves 101 and the positioning protrusions 201 to form a rectangular frame structure.

[0055] Pre-embedded bolts 13 are installed in the pre-embedded bolt holes 1301. One end of the pre-embedded bolt 13 penetrates through the bottom plate and a nut is screwed on this end to prevent the pre-embedded bolt from detaching from the bottom plate. The first bottom plates 1 and the second bottom plates 2 are fixed together by the pre-embedded bolts passing through the positioning grooves 101 and the positioning protrusions 201.

[0056] The outer ring side plates include two first outer ring side plates 3 and two second outer ring side plates 4.

[0057] The first outer ring side plate 3 is made of Q235 steel plate with a length of 1500 mm, a width of 216 mm, and a thickness of 16 mm. On the outer side wall of the first outer ring side plate, a first outer ring ear plate 302 is processed. The first outer ring ear plate 302 is 850 mm away from one end in the width direction and 650 mm away from the other end edge. The total length of the first outer ring ear plate is 100 mm, the width is 50 mm, the thickness is 12 mm, and the length of the part protruding from the first outer ring side plate is 50 mm. A second bolt mounting hole 302 with a diameter of 18 mm is processed at a position 37 mm away from the protruding section of the protruding part. A chute 301 parallel to the width direction is processed on the first outer ring side plate at a position 800 mm away from this mounting hole. The width of the chute 301 is 12 mm and the depth is 5 mm, which is processed from the top to the bottom of the first outer ring side plate. On the plate surface of the first outer ring side plate outside the chute 301, a first bolt mounting hole 303 with a diameter of 18 mm is processed. Two chutes and two first bolt mounting holes 303 are symmetrically arranged on the first outer ring side plate with the center line in the length direction. A first outer ring side plate groove is processed at the bottom of the first outer ring side plate. The width of the first outer ring side plate groove is 5 mm and the thickness cut off is 8 mm.

[0058] The second outer ring side plate 4 is made of Q235 steel plate with a length of 1410 mm, a width of 200 mm, and a thickness of 12 mm. A second outer ring ear plate 401 is arranged at a position 100 mm away from the center line in the length direction of the second outer ring side plate. The length of the second outer ring side plate is 100 mm, the width is 50 mm, and the length of the protruding section from the bottom of the second outer ring side plate is 66 mm. A second bolt mounting hole with a diameter of 18 mm is processed on it at a distance of 37 mm from the bottom of the second outer ring ear plate.

[0059] The first bottom plate outer groove 103 and the first outer ring side plate groove position and clamp the first outer ring side plate on the first bottom plate 1, and realize the parallel positioning and installation of the two first outer ring side plates. The two second outer ring side plates are parallelly clamped between the first outer ring side plates and are perpendicular to the first outer ring side plates. The two ends of the second outer ring side plate are positioned and installed by being clamped in the chutes 301 on the two parallel first outer ring side plates. When the second outer ring side plate slides to the bottom, it is supported on the first bottom plate 1 and the outer wall of the installed second outer ring side plate fits with the positioning block 104. The two first outer ring side plates 1 are fixed together by the first double-headed bolts 9 passing through the first bolt mounting holes on the parallel first outer ring side plates.

[0060] The inner ring side plates include two first inner ring side plates and two second inner ring side plates. The two first inner ring side plates are both spliced by a first inner ring splicing plate and a second inner ring splicing plate. The second inner ring side plate is spliced by a third inner ring splicing plate and a fourth inner ring splicing plate.

[0061] The first inner ring splicing plate 5 is made of Q235 steel plate with a length of 388 mm, a width of 316 mm, and a thickness of 12 mm. A first inner ring side plate groove 501 is provided at the bottom of the first inner ring splicing plate 5. The width of the first inner ring side plate groove 501 is 5 mm and the thickness cut off is 8 mm. Two first inner ring straight ear plates 502 and two first inner ring L-shaped ear plates 503 are fixed on the side wall of the first inner ring splicing plate 5 located outside the pouring cavity. Positioning bolt holes with a diameter of 18 mm are machined on both the first inner ring straight ear plate 502 and the first inner ring L-shaped ear plate 503.

[0062] The second inner ring splicing plate 6 is made of Q235 steel plate with a length of 388 mm, a width of 316 mm, and a thickness of 12 mm. A second inner ring side plate groove 604 is provided at the bottom of the second inner ring splicing bottom plate. The width of the second inner ring side plate groove 604 is 5 mm and the thickness cut off is 8 mm. Two second inner ring straight ear plates 601 and two second inner ring L-shaped ear plates 603 are fixed on the side wall of the second inner ring splicing plate located outside the pouring cavity. Positioning bolt holes with a diameter of 18 mm are machined on both the second inner ring straight ear plate 601 and the second inner ring L-shaped ear plate 603. A first inner ring parallel ear plate 602 is provided on the outer wall of the second inner ring side plate, and a second bolt mounting hole is machined on the first inner ring parallel ear plate 602.

[0063] The third inner ring splicing plate 7 is made of Q235 steel plate with a length of 400 mm, a width of 316 mm, and a thickness of 12 mm. A third inner ring side plate groove 701 is provided at the bottom of the third inner ring splicing plate 7. The width of the third inner ring side plate groove 701 is 5 mm and the thickness cut off is 8 mm. Two third inner ring straight ear plates 702 and two third inner ring L-shaped ear plates 703 are fixed on the side wall of the third inner ring splicing plate 7 located outside the pouring cavity. Positioning bolt holes with a diameter of 18 mm are machined on both the third inner ring straight ear plate and the third inner ring L-shaped ear plate. A second inner ring parallel ear plate 704 is provided on the outer wall of the third inner ring side plate, and a second bolt mounting hole is machined on the second inner ring parallel ear plate 704.

[0064] The fourth inner ring splicing plate 8 is made of Q235 steel plate with a length of 400 mm, a width of 316 mm, and a thickness of 12 mm. A fourth inner ring side plate groove 803 is provided at the bottom of the fourth inner ring splicing bottom plate 8. The width of the fourth inner ring side plate groove 803 is 5 mm and the thickness cut off is 8 mm. Two fourth inner ring straight ear plates 802 and two fourth inner ring L-shaped ear plates 801 are fixed on the side wall of the fourth inner ring splicing plate 8 located outside the pouring cavity. Positioning bolt holes with a diameter of 18 mm are machined on both the fourth inner ring straight ear plate 802 and the fourth inner ring L-shaped ear plate 801.

[0065] The two first inner ring side plates formed by fitting and splicing the first inner ring splicing plate 5 and the second inner ring splicing plate 6 are arranged parallel to each other at intervals. The two second inner ring side plates formed by splicing the third inner ring splicing plate 7 and the fourth inner ring splicing plate 8 are arranged parallel to each other at intervals between the two first inner ring side plates. The second inner ring side plates are perpendicular to the first inner ring side plates. At the bottom of the first inner ring side plates and the second inner ring side plates and the inner ring edge position of the bottom plate, there are mutually matching inner ring grooves for positioning and installation.

[0066] Specifically as follows: One width side of the first inner ring splicing plate 5 and the second inner ring splicing plate 6 is attached. The first inner ring L-shaped ear plate 503 and the second inner ring L-shaped ear plate 603 are attached to each other up and down. A positioning bolt 10 is sequentially passed through the four ear plates from top to bottom to splice the first inner ring splicing plate and the second inner ring splicing plate together to form a first inner ring side plate. Then, after the first inner ring side plate groove 501 and the second inner ring side plate groove 604 are spliced, they cooperate with the inner ring groove on the first bottom plate to realize the positioning and installation of the first inner ring splicing plate 5 and the second inner ring splicing plate 6. A second double-headed bolt 11 is installed through the second bolt mounting holes opened on the first outer ring ear plate 302 on the first outer ring side plate 3 and the first inner ring parallel ear plate 602 on the second inner ring splicing plate 6. The second double-headed bolt 11 fixes the second inner ring splicing plate to the first outer ring side plate.

[0067] One width side of the third inner ring splicing plate 7 and the fourth inner ring splicing plate 8 is attached. The third inner ring L-shaped ear plate 703 and the fourth inner ring L-shaped ear plate 801 are attached to each other up and down. A positioning bolt 10 is sequentially passed through the four ear plates from top to bottom to splice the third inner ring splicing plate 703 and the fourth inner ring splicing plate 801 together to form a second inner ring side plate. Then, after the third inner ring side plate groove 701 and the fourth inner ring side plate groove 803 are spliced, they cooperate with the inner ring groove on the second bottom plate to realize the positioning and installation of the third inner ring splicing plate 7 and the fourth inner ring splicing plate 8. A second double-headed bolt 11 is installed in the second bolt mounting holes on the second outer ring ear plate 401 on the second outer ring side plate 4 and the second outer ring parallel ear plate 704 on the third inner ring splicing plate 7. The third inner ring splicing plate 7 is fixed to the second outer ring side plate 4 through the second double-headed bolt 11.

[0068] Since the first inner ring side plates and the second inner ring side plates are perpendicular to each other, the first inner ring splicing plate 5 and the third inner ring splicing plate 7 are perpendicular. Then, the first inner ring straight ear plate 502 on the first inner ring splicing plate 5 and the third inner ring straight ear plate 702 on the third inner ring splicing plate 7 are perpendicular and cross each other. The first inner ring splicing plate 5 and the third inner ring splicing plate 7 are fixed by sequentially passing the positioning bolt 10 through the four ear plates from top to bottom, that is, the first inner ring side plates and the second inner ring side plates are fixed into an L-shaped structure. Subsequently, the remaining first inner ring splicing plates, second inner ring splicing plates, third inner ring splicing plates and fourth inner ring splicing plates are symmetrically installed.

[0069] On one side wall of the casting cavity where the surfaces of the first inner ring side plate and the second inner ring side plate are located outside the casting cavity, there are vertical ear plates perpendicular to the corresponding side plates, including the first inner ring straight ear plate, the first inner ring L-shaped plate, the second inner ring straight ear plate, the second inner ring L-shaped plate, the third inner ring straight ear plate, the third inner ring L-shaped plate, the fourth inner ring straight ear plate, and the fourth inner ring L-shaped plate. The vertical ear plates on adjacent first inner ring side plates and second inner ring side plates overlap with each other. A positioning bolt for fixing the first inner ring side plate and the second inner ring side plate together is provided through the overlapping vertical ear plates. Parallel ear plates parallel to the surfaces of the corresponding side plates are provided at the bottoms of the first inner ring side plate and the second inner ring side plate. The parallel ear plates extend along the surfaces of the corresponding plates until they protrude from the bottom of the bottom plate. An outer ring ear plate parallel to the parallel ear plates is provided on the outer ring side plate. The first inner ring side plate and the second inner ring side plate are fixed to the outer ring side plate through a second double-headed bolt passing through the outer ring side plate and the parallel ear plates.

[0070] After installation, the first double-headed bolt 9 is located outside the side wall of the casting cavity, and the second double-headed bolt 11 is located outside the bottom of the casting cavity.

[0071] The specific process includes the following steps: manufacturing the funnel mold → installing the bottom mold → installing the embedded bolts → assembling the side mold → installing the funnel steel bars → pouring the concrete → prefabricating and positioning the installation of the funnel

[0072] 1) Fabricate a combined type of standardized steel mold according to the design drawings of the silo. The number of molds can be fabricated according to the number of funnels and the requirements of the project progress for reasonable turnover and use.

[0073] 2) The bottom plate is drilled according to the positions and models of the embedded bolts so that the embedded bolts can be installed on the bottom formwork.

[0074] 3) Pass the embedded bolts through the reserved holes in the bottom plate of the formwork for precise positioning and installation.

[0075] 4) The bottom plate is assembled into a square-shaped structural member. The outer ring side plate and the bottom plate are positioned through groove matching and fastened with two M16 first double-headed bolts. The inner ring side plate adopts a segmented design for easy disassembly and is positioned with the bottom plate through groove matching. The two inner splicing side plates on each side are quickly connected with a pin shaft and fixed to the outer ring side plate with 4 M16 second double-headed bolts.

[0076] 5) Install the funnel steel bars according to the design requirements and process the straight thread joints for the steel bars at the bottom edge of the funnel opening;

[0077] 6) Pour the concrete at the funnel opening and cure it as required;

[0078] 7) Carry out the overall positioning and installation of the funnel opening. The reserved straight thread joint at the funnel opening is connected with the silo steel bars using a straight thread sleeve, and then the surrounding concrete structure is poured.

[0079] 3. Description

[0080] 1) Mold manufacturing instructions

[0081] The mold is made by riveting, welding and machining with Q235 steel. The fitting tolerance for all grooves is 0.2 mm. The screw holes are drilled according to the drawing dimensions, and the surface finish requirements for each fitting surface reach level ▽5.

[0082] 2) Mold assembly instructions

[0083] The mold needs to be installed on the bracket. The installation sequence is as follows:

[0084] a. Place the first bottom plate on the lower layer, and the second bottom plate on the first bottom plate. Pass 4 embedded bolts 13 through the embedded bolt installation holes at the positions of the positioning grooves and positioning protrusions for temporary fixation, fix the first bottom plate and the second bottom plate as a whole, and then install the remaining embedded bolts 13.

[0085] b. Fit and install the first outer ring side plate 3 and the second outer ring side plate 4. After installation, temporarily fix the first double-headed tension bolt 9. Use a square to check and adjust the perpendicularity of the outer formwork, and then lock the embedded bolts 13 and the first double-headed tension bolt 9.

[0086] c. Assemble the third inner ring splicing plate 7 and the fourth inner ring splicing plate 8 into a whole with positioning bolts 10, temporarily fix them at the position of the inner ring side plate, then install the first inner ring splicing plate 5 and the second inner ring splicing plate 6, and connect the first inner ring splicing plate 5 to the third inner ring splicing plate 7 and the second inner ring splicing plate 6 to the fourth inner ring splicing plate 8 respectively with positioning bolts 10 to form a whole. Finally, connect the first inner ring splicing plate 5 to the second inner ring splicing plate 6 and the third inner ring splicing plate 7 to the fourth inner ring splicing plate 8 with positioning bolts 10 to form a whole.

[0087] d. After adjusting the position, fix and lock the inner ring side plate with 4 second double-headed bolts 11 and backing plates 12.

[0088] 3) Mold disassembly instructions

[0089] a. The disassembly of the outer ring side plate is as follows: Loosen the first double-headed bolt 9 and the second double-headed bolt 11 and disassemble them, remove the first outer ring side plate 1, and then remove the second outer ring side plate 2.

[0090] b. The disassembly of the inner formwork is as follows: Remove all positioning bolts 10, remove the first inner ring splicing plate 5 and the second inner ring splicing plate 6, and then remove the third inner ring splicing plate 7 and the fourth inner ring splicing plate 8.

[0091] c. The disassembly of the bottom formwork is as follows: Remove the fixing nuts on all the embedded bolts at the bottom of the bottom plate, remove the first bottom plate 1, use tools such as a jack to move the precast concrete funnel opening upward, and after stabilizing it with wooden blocks, remove the second bottom plate 2.

[0092] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction mold for an assembled funnel opening of a concrete structure silo, characterized in that: It includes a bottom plate with a double-square structure, an inner ring side plate and an outer ring side plate. The inner ring side plate is vertically arranged on the bottom plate at the inner ring edge of the double-square structure, and the outer ring side plate is vertically arranged on the bottom plate at the outer ring edge of the double-square structure. The bottom plate, the inner ring side plate and the outer ring side plate cooperate to form a casting cavity around. At the edge position of the bottom plate, there is a side plate positioning structure for positioning the installation positions of the inner ring side plate and the outer ring side plate. The inner ring side plate and the outer ring side plate are fixedly installed through fasteners located outside the casting cavity. The outer ring side plate includes two first outer ring side plates and two second outer ring side plates. The two first outer ring side plates are parallel to each other and are positioned and installed through outer ring grooves that are arranged on the bottom plate and cooperate with the bottoms of the first outer ring side plates. The two second outer ring side plates are parallel to each other and are clamped between the first outer ring side plates and are perpendicular to the first outer ring side plates. On the plate surfaces of the two first outer ring side plates, there are chutes that cooperate to define the installation position of the second outer ring side plate. The ends of the second outer ring side plates are slidably clamped in the chutes. On the plate surface of the first outer ring side plate located outside the casting cavity, there are bolt installation holes. The two first outer ring side plates are fixed together by a first double-headed bolt passing through the bolt installation holes.

2. The construction mold for the prefabricated funnel opening of a concrete structure silo according to claim 1, characterized in that: The bottom plate includes two first bottom plates and two second bottom plates. The first bottom plates are arranged in parallel at intervals, and the second bottom plates are parallel to each other and are placed between the first bottom plates. And between the first bottom plates and the second bottom plates, there is a bottom plate positioning structure for defining their installation positions. The first bottom plates and the second bottom plates are spliced together to form a double-square structure through the bottom plate positioning structure.

3. The construction mold for the prefabricated funnel opening of the concrete structure silo according to claim 2, characterized in that: The bottom plate positioning structure includes a positioning groove dug on the first bottom plate and a positioning protrusion fixed at the end of the second bottom plate. The installation position of the second bottom plate on the first bottom plate is determined by the positioning protrusion being clamped in the positioning groove.

4. The construction mold for the prefabricated funnel opening of the concrete structure silo according to claim 2, characterized in that: In the casting cavity, there are several embedded bolt installation holes penetrating the bottom plate, and at least one of the embedded bolt installation holes penetrates the overlapping position of the first bottom plate and the second bottom plate.

5. The construction mold for the prefabricated funnel opening of the concrete structure silo according to claim 4, characterized in that: Embedded bolts are installed in the embedded bolt installation holes. One end of each embedded bolt penetrates the bottom plate and a nut is screwed on this end to prevent the embedded bolt from detaching from the bottom plate. The first bottom plate and the second bottom plate are fixed together by the embedded bolts passing through the overlapping position of the first bottom plate and the second bottom plate.

6. The construction mold for the prefabricated funnel opening of a concrete structure silo according to claim 1, characterized in that: On the plate surface of the bottom plate located outside the casting cavity, there are positioning blocks that cooperate with the chutes to define the installation position of the second outer ring.

7. A construction mold for an assembled funnel opening of a concrete structure silo according to claim 1, characterized in that: The inner ring side plates include two first inner ring side plates and two second inner ring side plates. The two first inner ring side plates are arranged parallel to each other at intervals. The two second inner ring side plates are arranged parallel to each other at intervals between the two first inner ring side plates, and the second inner ring side plates are perpendicular to the first inner ring side plates. Matching inner ring grooves are provided at the bottom of the first inner ring side plates and the second inner ring side plates and at the inner edge position of the bottom plate for positioning and installation. Vertical ear plates corresponding to the side plates are provided on one side wall of the first inner ring side plates and the second inner ring side plates where the plate surfaces are located outside the pouring cavity. The vertical ear plates on adjacent first inner ring side plates and second inner ring side plates are overlapped together, and a positioning bolt for fixing the first inner ring side plates and the second inner ring side plates together is provided through the overlapped vertical ear plates. Parallel ear plates parallel to the corresponding side plate surfaces are provided at the bottoms of the first inner ring side plates and the second inner ring side plates. The parallel ear plates extend along the corresponding plate surfaces until they extend out of the bottom of the bottom plate. Outer ring ear plates parallel to the parallel ear plates are provided on the outer ring side plates. The first inner ring side plates and the second inner ring side plates are fixed on the outer ring side plates through second double-headed bolts passing through the outer ring side plates and the parallel ear plates.

8. A construction mold for an assembled funnel opening of a concrete structure silo according to claim 7, characterized in that: The second double-headed bolt is located at the bottom of the bottom plate.

9. A construction mold for an assembled funnel opening of a concrete structure silo according to claim 7 or 8, characterized in that: The first inner ring side plates and the second inner ring side plates are each formed by splicing a plurality of splicing side plates.

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