A row-type mold for concrete prefabricated pipes

Abstract

The utility model relates to the technical field of precast concrete pipes, and relates to a row-type mold for precast concrete pipes. The row-type mold for precast concrete pipes comprises a bottom plate, an outer mold arranged above the bottom plate, a plurality of inner molds and a plurality of bottom molds; the outer mold has a plurality of accommodating cavities arranged at intervals for placing the inner molds one by one; a pouring cavity for pouring concrete is formed between the outer mold and the inner mold; the bottom mold is arranged above the bottom plate; part of the inner side wall of the bottom mold is connected to the outer wall of the inner mold, and part of the outer side wall of the bottom mold is connected to the inner wall of the outer mold. The row-type mold for precast concrete pipes is conducive to significantly improving the production efficiency of small and medium-caliber precast concrete pipes, which is specifically embodied in that by using the row-type mold for precast concrete pipes, 2-4 sections of the same type of pipes can be continuously poured by installing the mold once, which can save 40-70% of the assembly and disassembly operation time compared with the traditional single mold. In addition, it can also effectively reduce the dependence on lifting equipment during the production process.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated concrete pipes, in particular to a row-type mould for prefabricated concrete pipes. Background Art

[0002] Precast concrete pipe is a kind of precast concrete product widely used in social and economic construction. It has a high degree of standardization and is suitable for mass production. According to the needs of actual projects and the requirements of relevant product standards, precast concrete pipe can be produced by a variety of molding processes. Among them, the products produced by the vertical vibration molding process have the characteristics of stable quality and performance, easy to master the process, and good appearance quality. The production of precast concrete pipes by the vertical vibration molding process requires a special molding mold. The existing set of precast concrete pipe molding molds generally consists of four parts: bottom mold, inner mold, outer mold and top cover. See Figure 1 , Figure 2 As shown; the various parts of the mold are generally steel parts, and are manufactured into separate entities by machining, welding, etc., and form a complete set of molds when used.

[0003] The existing molds for similar products are generally a set of molds that produce one section of pipe at a time. In small and medium-caliber products (generally with a nominal diameter below DN1400mm), the demand for production efficiency is higher. The existing molds of the same type can only produce one section of pipe in one production process, which affects the further improvement of production efficiency. The existing commonly used molds also have the following inconveniences in use:

[0004] When the mold is in use, the mold closing procedure is: clean the bottom mold - lift the inner mold - lift the steel cage - lift the outer mold - lift the top cover; the mold dismantling procedure is: lift off the top cover - lift off the outer mold - lift off the inner mold - lift off the pipe.

[0005] In the above procedures, except for "cleaning the bottom mold", all operations require the use of a crane, which makes the crane used too frequently during the production process; the crane used in production is generally a bridge crane or a gantry crane, which has a slow travel speed. In addition, different tools are required to lift different objects, and there is a problem of frequent tooling changes. Therefore, the excessive use of the crane will further reduce production efficiency. When installing and removing the mold, the mold opening (seam) must be tightened, which is time-consuming and also affects the improvement of production efficiency. Utility Model Content

[0006] The purpose of the utility model includes providing a row-type mold for precast concrete pipes, which is conducive to significantly improving the production efficiency of small and medium-caliber precast concrete pipes. Specifically, by using the row-type mold for precast concrete pipes, 2-4 sections of the same type of pipes can be continuously cast by installing the mold once, which can save 40-70% of the mold installation and removal operation time (corresponding to 2-4 groups of row-type molds) compared with the traditional single mold, and significantly improve the production efficiency. In addition, it can effectively reduce the dependence on lifting equipment in the production process. During the process of installing and removing the mold, there is no need to use lifting equipment for the outer mold and the inner mold, thereby significantly reducing the frequency of use of the lifting equipment, avoiding the cross operation of hoisting, and improving the production efficiency.

[0007] In order to achieve the above purpose, the preferred solution adopted by the utility model is:

[0008] A row-type mould for concrete prefabricated pipes comprises a bottom plate, an outer mould arranged above the bottom plate, a plurality of inner moulds and a plurality of bottom moulds; the outer mould has a plurality of accommodating cavities arranged at intervals for placing the inner moulds one by one; a casting cavity for casting concrete is formed between the outer mould and the inner mould; the bottom mould is arranged above the bottom plate; part of the inner side wall of the bottom mould is connected to the outer wall of the inner mould, and part of the outer side wall of the bottom mould is connected to the inner wall of the outer mould.

[0009] Furthermore, in a preferred embodiment of the present invention, the axis lines of the multiple accommodating cavities are located in the same plane.

[0010] Furthermore, in a preferred embodiment of the utility model, the plane in which the axis lines of the multiple accommodating cavities are located is set as a preset plane; the bottom plate is provided with multiple parallel slide grooves; the length direction of the slide groove is perpendicular to the preset plane; the outer mold is slidably connected to the slide groove.

[0011] Furthermore, in a preferred embodiment of the utility model, the outer mold includes two outer mold unit blocks that are symmetrically arranged with a preset plane as a mirror surface; the two outer mold unit blocks can be moved away from, close to or close to each other; the two outer mold unit blocks can be detachably connected; and the outer mold unit block is slidably connected to the slide groove.

[0012] Furthermore, in a preferred embodiment of the present invention, the outer mold unit block is provided with an outer mold roller; the roller is embedded in the slide groove and slidably connected to the slide groove.

[0013] Furthermore, in a preferred embodiment of the present invention, a plurality of connecting plates are arranged at intervals on the outer mold unit blocks; the connecting plates are arranged at the connection between two outer mold unit blocks; and the two connecting plates at each connection can be completely attached and detachably connected.

[0014] Furthermore, in a preferred embodiment of the utility model, a top cover is also included, and the top cover is arranged above the inner mold.

[0015] The utility model provides a row-type mold for concrete prefabricated pipes with the following beneficial effects:

[0016] The utility model provides a row-type mold for concrete prefabricated pipes, comprising a bottom plate, an outer mold arranged above the bottom plate, a plurality of inner molds and a plurality of bottom molds. According to the structural design of the bottom plate, the outer mold, the plurality of inner molds and the plurality of bottom molds, and the design of the connection method between them, the obtained row-type mold for concrete prefabricated pipes can achieve:

[0017] (1) This application adopts a vertical vibrating molding process to produce small and medium-caliber precast concrete pipes with a row-type molding mold, and sets multiple casting cavities for pipe sections on one set of molds. The molding of multiple pipe sections can be completed by assembling one set of molds;

[0018] (2) The row-type mold for prefabricated concrete pipes provided in the present application can be used to open and close the opening of the inner mold through operating measures (including tightening and loosening operations), but it is not necessary to move the inner mold out of the inner cavity of the bottom mold, so the use of a crane can be avoided here;

[0019] (3) The row-type mold for concrete prefabricated pipes provided in the present application comprises two outer mold unit blocks symmetrically arranged with a preset plane as a mirror surface. When in use, the two halves of the outer mold unit blocks can slide in the pulley groove of the bottom plate by human push to realize the opening and closing of the outer mold. The opening and closing (including tightening and loosening operations) is once, which is equivalent to opening and closing the mold of multiple pipes, and no crane is needed, which greatly improves the work efficiency;

[0020] (4) The present application is suitable for use in precast concrete pipe products with an inner diameter in the range of 400mm-1400mm. In the aforementioned diameter range, smaller diameter pipes are suitable for more row combinations (such as 3-4 groups), and larger diameter pipes are suitable for fewer row combinations (such as 2 groups). The present invention can also be applied to pipes with larger diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a partial top view of a precast concrete pipe forming mold in the prior art;

[0023] Figure 2 It is a partial longitudinal cross-sectional schematic diagram of a precast concrete pipe forming mold in the prior art;

[0024] Figure 3 A partial top view of a row-type mold for prefabricated concrete pipes provided in an embodiment of the utility model;

[0025] Figure 4 A partial longitudinal cross-sectional schematic diagram of a row-type mold for prefabricated concrete pipes provided in an embodiment of the utility model;

[0026] Icon: 10-row mold for precast concrete pipe, 100-top cover, 200-outer mold, 300-inner mold, 400-bottom plate, 500-bottom mold, 600-connecting plate, 700-accommodating cavity, 800-casting cavity, 210-outer mold roller, 220-slide, 230-outer mold unit block, 20-precast concrete pipe forming mold, 21-bottom mold, 22-inner mold, 23-outer mold, 24-top cover. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] Example 1

[0031] The following is combined with Figure 1 -Attached Figure 4 The utility model is further described as follows:

[0032] In the prior art, a precast concrete pipe is produced by a vertical vibrating molding process, which requires a special molding mold. The existing precast concrete pipe molding mold 20 generally consists of a bottom mold 21, an inner mold 22, an outer mold 23 and a top cover 24. Figure 1 , Figure 2Each part of the mold is generally made of steel and is manufactured into a separate whole by machining, welding, etc., and forms a complete set of molds when used.

[0033] The utility model provides a row-type mold 10 for concrete prefabricated pipes. Figure 3 and Figure 4 The row-type mold 10 for prefabricated concrete pipes includes a bottom plate 400, an outer mold 200 arranged above the bottom plate 400, a top cover 100 arranged above the inner mold 300, a plurality of inner molds 300, a bottom mold 500 and a plurality of connecting plates 600.

[0034] The outer mold 200 has a plurality of spaced accommodating cavities 700 for placing the inner mold 300 one by one. In this embodiment, the axis lines of the plurality of accommodating cavities 700 are located in the same plane. To facilitate the description of the positional relationship of each component, the plane where the axis lines of the plurality of accommodating cavities 700 are located is set as a preset plane.

[0035] Among them, the outer mold 200 includes two outer mold unit blocks 230 which are symmetrically arranged with a preset plane as a mirror surface. The two outer mold unit blocks 230 can be detachably connected. The two outer mold unit blocks 230 can be moved away from, close to or close to each other. When the two outer mold unit blocks 230 are close and connected, the hollow space therebetween constitutes a accommodating cavity 700.

[0036] In this embodiment, a plurality of parallel slide grooves 220 are provided on the surface of the bottom plate 400, and the length direction of the slide grooves 220 is perpendicular to the preset plane. The outer mold unit block 230 is provided with an outer mold roller 210, which is embedded in the slide groove 220 and slidably connected to the slide groove 220, so as to realize the separation and merging of the two outer mold unit blocks 230.

[0037] In this embodiment, a plurality of connecting plates 600 are disposed at intervals on the outer mold unit block 230, and each connecting plate 600 is disposed at the connection between two outer mold unit blocks 230. The two connecting plates 600 at each connection can be completely attached and detachably connected.

[0038] The connecting plate 600 is used to connect the semicircular templates of the same outer mold unit block 230 on one hand; on the other hand, after the two outer mold unit blocks 230 are closed, the connecting plates 600 on the two outer mold unit blocks 230 can be fully fitted and connected to ensure that there is no leakage at the closed position.

[0039] A pouring cavity 800 for pouring concrete is formed between the outer mold 200 and the inner mold 300. The bottom mold 500 is arranged above the bottom plate 400. Part of the inner wall of the bottom mold 500 is connected to the outer wall of the inner mold 300, and part of the outer wall of the bottom mold 500 is connected to the inner wall of the outer mold 200.

[0040] The row-type mold 10 for precast concrete pipes provided in this embodiment is used as follows: First, for the production of precast concrete pipe products of a certain diameter, the overall level of the mold is adjusted to keep it stable. Before use, the two outer mold unit blocks 230 are in a separated state, and the inner mold 300 is in a loosened state. The isolation agent is evenly applied on all working surfaces of the mold (the contact surface with concrete, including the inner mold 300, the outer mold 200, and the bottom mold 500); then, the steel cage is hoisted into the mold by a crane. At this time, the steel member is in a state of being sleeved on the outer ring of the inner mold 300 and placed on the bottom mold 500. After positioning the steel member, the inner mold 300 is closed, and then the top cover 100 is hoisted by a crane to the top of the inner mold 300; then, the two outer mold unit blocks 230 are manually pushed to move toward each other until they are closed and tightened, and the pouring and curing of concrete are started; finally, after the curing is completed, the two outer mold unit blocks 230 are manually loosened and pushed to a separated state, and the top cover 100 is lifted away by a crane, and the inner mold 300 is manually loosened (the inner mold 300 does not need to be lifted), and the product is lifted away by a crane.

[0041] In summary, the row-type mold 10 for precast concrete pipes provided in this embodiment is conducive to significantly improving the production efficiency of small and medium-caliber precast concrete pipes. Specifically, by using the row-type mold 10 for precast concrete pipes, 2-4 sections of the same type of pipes can be continuously cast by installing the mold once, which can save 40-70% of the mold assembly and disassembly operation time (corresponding to 2-4 groups of row-type molds) compared with the traditional single mold, and significantly improves the production efficiency. In addition, it can effectively reduce the dependence on lifting equipment in the production process. During the assembly and disassembly operation, there is no need to use lifting equipment for the outer mold 200 and the inner mold 300, thereby significantly reducing the frequency of use of the lifting equipment, avoiding cross-operation of hoisting, and improving production efficiency.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A row-type mold for prefabricated concrete pipes, characterized in that: It includes a bottom plate, an outer mold arranged above the bottom plate, a plurality of inner molds and a plurality of bottom molds; The outer mold has a plurality of accommodating cavities arranged at intervals for placing the inner molds one by one; a pouring cavity for pouring concrete is formed between the outer mold and the inner mold; the bottom mold is arranged above the bottom plate; part of the inner wall of the bottom mold is connected to the outer wall of the inner mold, and part of the outer wall of the bottom mold is connected to the inner wall of the outer mold.

2. The row-type mold for prefabricated concrete pipes according to claim 1, characterized in that: The axial center lines of the multiple accommodating cavities are located in the same plane.

3. The row-type mold for prefabricated concrete pipes according to claim 2, characterized in that: The plane where the axis lines of the multiple accommodating cavities are located is set as a preset plane; the bottom plate is provided with multiple parallel sliding grooves; the length direction of the sliding grooves is perpendicular to the preset plane; the outer mold is slidably connected to the sliding grooves.

4. The row-type mold for prefabricated concrete pipes according to claim 3, characterized in that: The outer mold comprises two outer mold unit blocks which are symmetrically arranged with the preset plane as a mirror surface; the two outer mold unit blocks can be moved away from, approached or pressed against each other; the two outer mold unit blocks can be detachably connected; and the outer mold unit blocks are slidably connected to the slide groove.

5. The row-type mold for prefabricated concrete pipes according to claim 4, characterized in that: The outer mold unit block is provided with an outer mold roller; the roller is embedded in the slide groove and slidably connected to the slide groove.

6. The row-type mold for prefabricated concrete pipes according to claim 4, characterized in that: The outer mold unit blocks are provided with a plurality of connecting plates at intervals; the connecting plates are provided at the connection between two outer mold unit blocks; and the two connecting plates located at each connection can be completely attached and detachably connected.

7. The row-type mold for prefabricated concrete pipes according to claim 1, characterized in that: It also includes a top cover, which is arranged above the inner mold.

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