Internal mold for pouring well lid base concrete of inspection well
By using an inner mold composed of a cylindrical template and a turnbuckle for demolding, the problem of low strength of the cement precast brick inner mold in the traditional concrete pouring of manhole cover bases is solved, achieving high-quality construction and safety of manhole cover bases, and possessing easy disassembly, assembly, and reusability.
Patent Information
- Application Number
- CN202520544111.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-26
AI Technical Summary
In traditional concrete pouring methods for manhole cover bases, the inner mold of precast cement bricks has low strength and is easily damaged, leading to collapse around the manhole and uneven road surface settlement, posing quality risks and affecting driving safety.
The inner mold is composed of a cylindrical template and a turnbuckle for demolding. The template consists of three arc-shaped steel plates, which are combined with hinges and pins to enhance rigidity. The overall rigidity is further enhanced by steel ribs, and the turnbuckles allow for easy disassembly and turnover.
It improves the construction quality of manhole cover bases, ensures construction safety, and features easy disassembly, assembly, and reusability. The materials are simple and easy to process, adapting to engineering needs.
Smart Images
Figure CN223951838U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of inner mould for pouring the concrete of inspection well lid base. BACKGROUND
[0002] The inspection well lid base of new municipal road project is located between shaft and road surface, generally uses cast-in-place reinforced concrete, and its design height is 0.2-0.5m (different for motorway and non-motorway). The traditional concrete pouring method of inspection well lid base is to place the shaft into the well pit dug in advance first, the top of the shaft is level with the top of the bottom base layer, then backfill soil between the shaft and the well pit to the road asphalt layer, and then excavate the cast-in-place pit for pouring the concrete of inspection well lid base on the road asphalt layer, the bottom of the cast-in-place pit is level with the top of the shaft, then use cement precast brick to build on the top surface of the shaft to form brick inner mould, then place the steel cage bound in advance between the outer side of the brick inner mould and the inner wall of the cast-in-place pit, then place the well lid on the top of the brick inner mould, calibrate the elevation and level, and then pour the concrete between the outer side of the brick inner mould and the inner wall of the cast-in-place pit. This method replaces part of the volume of reinforced concrete with the cement precast brick inner mould, and the cement precast brick inner mould will directly bear the load transmitted by the well lid. Since the strength of the precast brick is low, it is easy to be damaged under stress, which may cause the collapse of the well, uneven settlement or uplift of the road surface, and there is a great quality risk, which endangers the safety of driving. SUMMARY
[0003] The utility model aims at overcoming the defects of prior art and providing a kind of inner mould for pouring the concrete of inspection well lid base, which has the advantages of easy disassembly and assembly, recyclability and convenience.
[0004] The utility model aims at overcoming the defects of prior art and providing a kind of inner mould for pouring the concrete of inspection well lid base, which has the advantages of easy disassembly and assembly, recyclability and convenience.
[0005] The inner diameter of the cylindrical formwork is matched with the inner diameter of the shaft of the inspection well, and the height of the cylindrical formwork is greater than the height of the inspection well lid base. The cylindrical formwork is assembled by three arc-shaped steel plates with the same height and the same curvature. One end of the first arc-shaped steel plate and one end of the second arc-shaped steel plate are connected by two hinge mechanisms, and the other end of the first arc-shaped steel plate and the other end of the second arc-shaped steel plate are respectively connected to the two ends of the third arc-shaped steel plate by a corresponding number of bolt mechanisms.
[0006] The demoulding basket bolt is connected between the middle part of the height of the first arc-shaped steel plate and the middle part of the height of the second arc-shaped steel plate, located on the inner diameter line of the cylindrical formwork, and perpendicular to the line connecting the butt joint end of the first arc-shaped steel plate and the second arc-shaped steel plate and the axis of the cylindrical formwork.
[0007] The inner mold for pouring the well lid base concrete of the inspection well, wherein the inner mold further comprises three steel rib plates, and the three steel rib plates are fixed on the inner surfaces of the middle parts of the three arc-shaped steel plates in one-to-one correspondence, and the steel rib plate on the first arc-shaped steel plate is vertically staggered with the steel rib plate on the second arc-shaped steel plate.
[0008] The inner mold for pouring the well lid base concrete of the inspection well, wherein each of the hinge mechanisms comprises a first hinge plate fixed on the inner surface of the first arc-shaped steel plate, a second hinge plate fixed on the inner surface of the second arc-shaped steel plate, and a rotating shaft inserted into the shaft holes of the first hinge plate and the second hinge plate.
[0009] The inner mold for pouring the well lid base concrete of the inspection well, wherein the bolt mechanism comprises a plurality of first hinge plates fixed on the inner surface of the first arc-shaped steel plate from top to bottom, a plurality of second hinge plates fixed on the inner surface of the third arc-shaped steel plate from top to bottom and staggered with the plurality of first hinge plates, and a bolt inserted between the hinge holes of the plurality of first hinge plates and the plurality of second hinge plates.
[0010] The inner mold for pouring the well lid base concrete of the inspection well, wherein the top end of the bolt is provided with a handle.
[0011] The inner mold for pouring the well lid base concrete of the inspection well has the following characteristics:
[0012] 1) Small volume, high strength and rigidity, easy to disassemble and assemble, reusable and convenient, and most importantly, can effectively ensure the construction quality of the well lid base;
[0013] 2) The raw materials are simple, easy to process, and the size can be customized according to the actual engineering situation, and the disassembly and assembly are flexible and convenient, and have strong practicality. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 is a perspective view of the inner mold for pouring the well lid base concrete of the inspection well of the utility model;
[0015] Figure 2 is a top view of the inner mold for pouring the well lid base concrete of the inspection well of the utility model. DETAILED DESCRIPTION
[0016] The utility model will be further described in combination with the drawings.
[0017] Please refer to Figure 1 and Figure 2 The inner mold for pouring the well lid base concrete of the inspection well of the utility model comprises a cylindrical mold plate 1, three steel rib plates 2 and a demolding basket bolt 5.
[0018] The inner diameter of the cylindrical template 1 is adapted to the inner diameter of the shaft of the inspection well, and the height of the cylindrical template 1 is greater than the height of the well cover base; the cylindrical template 1 is assembled by three arc-shaped steel plates with the same height and the same arc; one end of the first arc-shaped steel plate 11 is connected with one end of the second arc-shaped steel plate 12 through two hinge mechanisms 3, and the other end of the first arc-shaped steel plate 11 and the other end of the second arc-shaped steel plate 12 are respectively connected with the two ends of the third arc-shaped steel plate 13 through the bolt mechanism 4 one by one.
[0019] Each hinge mechanism 3 includes a first hinge plate 31 fixed on the inner surface of the first arc-shaped steel plate 11, a second hinge plate 32 fixed on the inner surface of the second arc-shaped steel plate 12, and a rotating shaft 30 inserted into the shaft hole of the first hinge plate 31 and the shaft hole of the second hinge plate 32.
[0020] The bolt mechanism 4 includes a plurality of first hinge plates 41 fixed on the inner surface of the first arc-shaped steel plate 11 from top to bottom, a plurality of second hinge plates 42 fixed on the inner surface of the third arc-shaped steel plate 13 from top to bottom and staggered with the plurality of first hinge plates 41, and a bolt 40 inserted between the hinge holes of the plurality of first hinge plates 41 and the hinge holes of the plurality of second hinge plates 42, and the top end of the bolt 40 is provided with a handle 4A.
[0021] The steel rib plate 2 is in the shape of a fan ring, and the three steel rib plates 2 are respectively fixed on the inner surface of the middle part of the height of the first arc-shaped steel plate 11, the inner surface of the middle part of the height of the second arc-shaped steel plate 12, and the inner surface of the middle part of the height of the third arc-shaped steel plate 13, wherein the steel rib plate 2 on the first arc-shaped steel plate 11 is staggered 10mm up and down at the connecting part with the steel rib plate 2 on the second arc-shaped steel plate 12, so as to avoid collision and interference between the two steel rib plates 2 when demolding; the three steel rib plates 2 can enhance the rigidity of the whole cylindrical template 1 and reduce the deformation of the cylindrical template 1.
[0022] The demolding basket bolt 5 is connected between the middle part of the height of the first arc-shaped steel plate 11 and the middle part of the height of the second arc-shaped steel plate 12 and located on the inner diameter line of the cylindrical template 1 and perpendicular to the line connecting the abutting end of the first arc-shaped steel plate 11 and the second arc-shaped steel plate 12 with the axis of the cylindrical template 1.
[0023] In a preferred embodiment, the two ends of the demolding basket bolt 5 are respectively connected to the two steel rib plates 2 which are respectively fixed on the first arc-shaped steel plate 11 and the second arc-shaped steel plate 12.
[0024] The utility model discloses a for pouring the inner mould of manhole cover base concrete of inspection well, if the height of manhole cover base is 0.2~0.5m, the inner diameter of shaft is 0.7m, the height of cylindrical template 1 is 0.6m, the inner diameter is 0.7m, three arc steel sheets adopt 2mm thick steel sheet processing, the thickness of steel rib plate 2 is 2mm, and the width is 50mm.
[0025] The utility model discloses a for pouring the inner mould of manhole cover base concrete of inspection well, when using, first three arc steel sheets are assembled through two bolts into cylindrical template 1, then the cylindrical template 1 is coaxially placed on the top surface of shaft, then the steel reinforcement cage that is tied beforehand is set between the outside of cylindrical template 1 and the inner wall of cast-in-situ pit, and then pours the manhole cover base concrete between the outside of cylindrical template 1 and the inner wall of cast-in-situ pit, after the manhole cover base concrete reaches the final setting strength, first the bolt 40 of two bolt mechanisms 4 is pulled out, and the demoulding basket bolt 5 is tightened, and the end of first arc steel sheet 11 close to the bolt mechanism 4 connected with third arc steel sheet 13 and the end of second arc steel sheet 12 close to the bolt mechanism 4 connected with third arc steel sheet 13 all move to the axial direction of cylindrical template 1, realize that cylindrical template 1 is demoulded with manhole cover base.
[0026] The utility model discloses a for pouring the inner mould of manhole cover base concrete of inspection well, raw material is simple, easy processing, and can according to actual engineering situation customizes size, and dismounts and assembles nimble and convenient, has very strong practicality.
[0027] The above embodiment is only for the purpose of illustrating the utility model, and is not limited to the utility model, and the skilled in the art can make various changes or modifications without departing from the spirit and scope of the utility model, therefore, all equivalent technical solutions should belong to the scope of the utility model, and should be limited by each claim.
Claims
1. An inner mold for pouring the concrete of the well cover base of a manhole, comprising a cylindrical mold plate and a demolding basket bolt; characterized in that, the inner diameter of the cylindrical mold plate is adapted to the inner diameter of the well shaft of the manhole, and the height of the cylindrical mold plate is greater than the height of the well cover base; the cylindrical mold plate is assembled by three arc-shaped steel plates with the same height and the same curvature; one end of the first arc-shaped steel plate and one end of the second arc-shaped steel plate are connected by two hinge mechanisms, and the other end of the first arc-shaped steel plate and the other end of the second arc-shaped steel plate are respectively connected to the two ends of the third arc-shaped steel plate by a bolt mechanism one by one; the demolding basket bolt is connected between the middle part of the height of the first arc-shaped steel plate and the middle part of the height of the second arc-shaped steel plate and is located on the inner diameter line of the cylindrical mold plate and perpendicular to the line connecting the butt joint end of the first arc-shaped steel plate and the second arc-shaped steel plate and the axis of the cylindrical mold plate.
2. The inner form for pouring the concrete of the base of the well lid of the inspection well according to claim 1, characterized in that, The inner mold further comprises three fan-shaped steel rib plates, which are fixed one by one on the inner surface of the middle part of the height of the three arc-shaped steel plates, and the steel rib plate on the first arc-shaped steel plate is vertically displaced with the steel rib plate on the second arc-shaped steel plate at the connecting part.
3. The inner form for pouring the concrete of the base of the well lid of the inspection well according to claim 1, characterized in that, Each of the hinge mechanisms comprises a first hinge plate fixed on the inner surface of the first arc-shaped steel plate, a second hinge plate fixed on the inner surface of the second arc-shaped steel plate, and a rotating shaft inserted into the shaft hole of the first hinge plate and the shaft hole of the second hinge plate.
4. The inner form for pouring the concrete of the base of the well lid of the inspection well according to claim 1, characterized in that, The bolt mechanism comprises a plurality of first hinged plates fixed on the inner surface of the first arc-shaped steel plate from top to bottom, a plurality of second hinged plates fixed on the inner surface of the third arc-shaped steel plate from top to bottom and staggered with the plurality of first hinged plates, and a bolt inserted between the hinge holes of the plurality of first hinged plates and the hinge holes of the plurality of second hinged plates.
5. The inner form for pouring the concrete of the base of the well lid of the inspection well according to claim 4, characterized in that, The top end of the bolt is provided with a handle.