Prefabricated concrete inspection well mouth concrete cast-in-place combined die

Abstract

The utility model discloses a prefabricated concrete inspection well mouth concrete cast-in-place combined die which comprises an outer ring template and an inner ring template, and the outer ring template and the inner ring template are connected through a positioning plate. A supporting rod is arranged below the inner ring template and is in contact fit with the bottom of the inner ring template; a plurality of threaded holes are formed in the tops of the outer ring template and the inner ring template, and the two ends of the positioning plate are connected with the threaded holes of the outer ring template and the inner ring template through bolts. The device solves the problems that in the prior art, when a concrete prefabricated inspection well formwork is erected, time and labor are wasted, the pouring quality is prone to being affected, and the needed construction period is long, and has the advantages that the inspection well mouth construction quality can be improved, and the construction efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of municipal construction, and in particular relates to a concrete cast-in-place combined mould for a wellhead of a prefabricated concrete inspection well. Background Art

[0002] Municipal drainage pipe network systems are generally laid along the original road. Prefabricated concrete inspection wells are commonly used in the pipe network system. The height of the wellhead is determined according to the elevation of the original road surface. The prefabricated concrete inspection well is composed of a well chamber, a well shaft, and a well ring standard section. The brick structure is used to level the height difference between the wellhead and the road surface. Since the wellhead of the inspection well is a hollow thin-walled structure, the concrete pouring height is different and the pouring volume is small. A simple formwork is used on site for temporary erection, which not only affects the wellhead pouring quality, but also reduces the on-site construction efficiency. Therefore, it is necessary to design a prefabricated concrete inspection wellhead concrete cast-in-place composite mold to solve the above problems. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a cast-in-place combined mold for the wellhead of a prefabricated concrete inspection well. The device solves the problems in the prior art that the template for the prefabricated concrete inspection well is time-consuming and labor-intensive to set up, easily affects the casting quality, and requires a long construction period. The utility model has the characteristics of improving the construction quality of the wellhead of the inspection well and greatly improving the construction efficiency.

[0004] In order to realize the above-mentioned design, the technical solution adopted by the utility model is:

[0005] A concrete cast-in-place composite mould for a prefabricated inspection well mouth comprises an outer ring mould and an inner ring mould, wherein the outer ring mould and the inner ring mould are connected via a positioning plate; a support rod is arranged below the inner ring mould to contact and cooperate with the bottom of the inner ring mould.

[0006] Furthermore, the outer surfaces of the steel plates of the inner ring template and the outer ring template are connected with a plurality of transverse stiffening plates and longitudinal stiffening plates.

[0007] Preferably, the outer ring template includes three split curved steel plates with the same structure, and the three split curved steel plates are connected by bolts to form an outer ring template with a cylindrical structure.

[0008] Preferably, the inner ring template includes a type I template, a type II template and a type III template, and the type I template, the type II template and the type III template are all curved surface templates.

[0009] Preferably, one end of the type I template is connected to the type II template by bolts, the other end is connected to one end of the type III template by an anti-stuck mechanism, and the other end of the type III template is connected to the type II template by bolts.

[0010] Preferably, the anti-stuck mechanism is an inclined slope surface at one end where the I-type template and the III-type template are connected, and the inclined slope surface is connected by bolts.

[0011] Preferably, a plurality of threaded holes are provided on the top of the outer ring template and the inner ring template, and the two ends of the positioning plate are connected to the threaded holes of the outer ring template and the inner ring template by bolts.

[0012] Preferably, the support rod comprises an internal threaded sleeve, and the inner walls at both ends of the internal threaded sleeve are provided with reverse internal threads which are respectively threadably connected to independent screw rods.

[0013] Preferably, both ends of the screw rod are respectively connected with support blocks that are in contact with the bottom of the inner ring template.

[0014] Furthermore, the support blocks at both ends of the screw rod are in contact with the prefabricated concrete well ring.

[0015] The beneficial effects of the above-mentioned concrete prefabricated inspection well wellhead concrete cast-in-place combined mold are as follows:

[0016] By setting up a split modular formwork structure, the device can quickly carry out formwork casting at the construction site, solving the problems of the prior art that the erection of concrete prefabricated inspection well formwork is time-consuming and labor-intensive, easily affects the casting quality, and requires a long construction period. The device has the characteristics of improving the construction quality of the inspection well mouth and greatly improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the elevation structure of the utility model during construction;

[0019] Figure 3 It is a schematic diagram of the top surface structure of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the connection between the type I template and the type III template of the utility model;

[0021] The reference numerals in the figure are: outer ring template 1, inner ring template 2, type I template 21, type II template 22, type III template 23, positioning plate 3, support rod 4, internal threaded sleeve 41, screw 42, support block 43, anti-stuck mechanism 5, threaded hole 6, prefabricated concrete well ring 7, manual demoulding handle 8, cast-in-place concrete heightened well ring 9. DETAILED DESCRIPTION

[0022] like Figure 1~Figure 4 In the invention, a concrete prefabricated inspection well mouth cast-in-place composite mold comprises an outer ring template 1 and an inner ring template 2, wherein the outer ring template 1 and the inner ring template 2 are connected by a positioning plate 3; a support rod 4 is arranged below the inner ring template 2 to contact and cooperate with the bottom of the inner ring template 2.

[0023] Furthermore, the outer surfaces of the steel plates of the inner ring template 2 and the outer ring template 1 are connected with a plurality of transverse stiffening plates and longitudinal stiffening plates.

[0024] Furthermore, the template height is 300mm, the bottom inner diameter of the outer ring template 1 is 932mm, the top inner diameter is 926mm, the bottom inner diameter of the inner ring template 2 is 700mm, and the top inner diameter is 706mm; the concrete surface is slightly concave when pressed with fingers, and the strength reaches 0.2~0.4MPa. Through manual pulling, the inner ring template 2 and the outer ring template 1 are vertically lifted respectively to complete the demolding; then the inner and outer surfaces of the shaft concrete are plastered and polished.

[0025] Furthermore, both the inner and outer formworks are formed by rolling Q235 steel plates with a thickness of 3mm. The formwork reinforcement ribs are made of Q235 flat steel with a thickness of 3mm and a width of 30mm. The horizontal reinforcement rib spacing is 100mm, the longitudinal reinforcement rib arc length spacing is 200mm, and the reinforcement ribs have 10mm reserved bolt holes.

[0026] Preferably, the outer ring template 1 comprises three split curved steel plates with the same structure, and the three split curved steel plates are connected by bolts to form the outer ring template 1 with a cylindrical structure.

[0027] Preferably, the inner ring template 2 includes a type I template 21, a type II template 22 and a type III template 23, and the type I template 21, the type II template 22 and the type III template 23 are all curved templates.

[0028] Preferably, one end of the I-type template 21 is connected to the II-type template 22 by bolts, and the other end is connected to one end of the III-type template 23 through the anti-stuck mechanism 5, and the other end of the III-type template 23 is connected to the II-type template 22 by bolts.

[0029] Preferably, the anti-jamming mechanism 5 is an inclined slope surface at one end where the I-type template 21 and the III-type template 23 are connected, and the inclined slope surface is connected by bolts.

[0030] Furthermore, the inclined slope angle of the anti-jamming mechanism 5 is preferably 63 degrees.

[0031] Preferably, a plurality of threaded holes 6 are provided on the top of the outer ring template 1 and the inner ring template 2 , and both ends of the positioning plate 3 are connected to the threaded holes 6 of the outer ring template 1 and the inner ring template 2 by bolts.

[0032] Furthermore, the top surfaces of the inner and outer templates are fixed with template positioning pins to ensure that the distance between the inner and outer molds is 110 mm and the molds are integrated. The support rod 4 is installed on the prefabricated inspection well shaft, and the top plate is flush with the upper edge of the inspection well to support the inner circle template 2 to prevent the inner mold from shifting.

[0033] Preferably, the support rod 4 comprises an internal threaded sleeve 41 , and the inner walls at both ends of the internal threaded sleeve 41 are provided with reverse internal threads which are respectively threadedly connected with independent screw rods 42 .

[0034] Preferably, both ends of the screw rod 42 are respectively connected with support blocks 43 that are in contact with and fit with the bottom of the inner ring template 2 .

[0035] Furthermore, the support blocks 43 at both ends of the screw rod 42 are in contact with the prefabricated concrete well ring 7 .

[0036] The working principle of the utility model is as follows:

[0037] When in use, assemble the formwork and then start pouring. After pouring is completed, press the concrete surface with your fingers to create a slight concave state, and the strength reaches 0.2~0.4MPa. By manually pulling, lift the inner circle formwork 2 and the outer circle formwork 1 vertically respectively to complete the demolding; then, the inner and outer surfaces of the shaft concrete are plastered and polished.

[0038] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A concrete prefabricated inspection well mouth concrete cast-in-place combined mold, characterized by: It comprises an outer ring template (1) and an inner ring template (2), wherein the outer ring template (1) and the inner ring template (2) are connected via a positioning plate (3); a support rod (4) is provided below the inner ring template (2) and is in contact with the bottom of the inner ring template (2).

2. The cast-in-place composite mold for the wellhead of a prefabricated concrete inspection well according to claim 1, characterized in that: The outer ring template (1) comprises three split curved steel plates with the same structure, and the three split curved steel plates are connected by bolts to form an outer ring template (1) with a cylindrical structure.

3. The cast-in-place composite mold for the wellhead of a prefabricated concrete inspection well according to claim 1, characterized in that: The inner ring template (2) comprises a type I template (21), a type II template (22) and a type III template (23), and the type I template (21), the type II template (22) and the type III template (23) are all arc-surface templates.

4. The cast-in-place composite mold for the wellhead of a prefabricated concrete inspection well according to claim 3 is characterized by: One end of the I-type template (21) is connected to the II-type template (22) via bolts, and the other end is connected to one end of the III-type template (23) via an anti-jamming mechanism (5); the other end of the III-type template (23) is connected to the II-type template (22) via bolts.

5. The cast-in-place composite mold for the wellhead of a prefabricated concrete inspection well according to claim 4, characterized in that: The anti-jamming mechanism (5) is an inclined slope surface at one end where the I-type template (21) and the III-type template (23) are connected, and the inclined slope surface is connected by bolts.

6. The cast-in-place composite mold for the wellhead of a prefabricated concrete inspection well according to claim 1, characterized in that: The outer ring template (1) and the inner ring template (2) are both provided with a plurality of threaded holes (6) at the top, and the two ends of the positioning plate (3) are connected to the threaded holes (6) of the outer ring template (1) and the inner ring template (2) by bolts.

7. The cast-in-place composite mold for the wellhead of a prefabricated concrete inspection well according to claim 1, characterized in that: The support rod (4) comprises an internal thread sleeve (41), and the inner walls at both ends of the internal thread sleeve (41) are provided with reverse internal threads which are respectively threadedly connected to independent screw rods (42).

8. The cast-in-place composite mold for the wellhead of a prefabricated concrete inspection well according to claim 7, characterized in that: Both ends of the screw rod (42) are respectively connected to support blocks (43) that are in contact with the bottom of the inner ring template (2).

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