Combined water-stable base material forming die

Abstract

The utility model relates to the technical field of dies, in particular to a combined type water-stable base material forming die which comprises an inner cylinder and an outer cylinder. The inner cylinder comprises a first arc-shaped plate and a second arc-shaped plate which are oppositely arranged, a mold cavity is formed between the first arc-shaped plate and the second arc-shaped plate, first connecting parts are arranged on the two sides of the first arc-shaped plate, and second connecting parts are arranged on the two sides of the second arc-shaped plate; at least one first connecting part is detachably connected with the corresponding second connecting part, the inner barrel is sleeved with the outer barrel, and the inner wall of the outer barrel is matched with the outer wall of the inner barrel. During demolding, the first connecting part and the second connecting part which are detachable can be detached, so that the mold cavity and the molded test piece are separated from an attached state, and the demolding difficulty is reduced. And by arranging the outer cylinder arranged on the inner cylinder in a sleeving mode, the inner cylinder can be effectively protected through the outer cylinder, deformation of the inner cylinder in the compaction forming process is prevented, and the mold is not prone to being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field especially relates to a combined water stable base material forming mould. BACKGROUND

[0002] Water stable base is the semi-rigid base structure formed after cement, aggregate (such as broken stone, gravel etc.) and water are mixed and stirred according to specific proportion and then are spreaded, rolled and maintained. It has the advantages of high strength, good stability and durability, and is widely used in the construction of bearing layer of highway, urban road, airport runway etc. In order to improve the road performance of water stable base, a series of tests such as compaction test, unconfined compressive strength test, splitting strength test and scouring resistance test etc. are usually carried out before paving. These tests need to be carried out by preforming cylindrical water stable test pieces.

[0003] In the prior art, water stable test piece usually adopts cylindrical mould. When demoulding, the formed test piece needs to be pushed out from the mould cavity by external force. However, in the process of pushing the formed test piece, not only the formed test piece is easily damaged, leading to the breakage of test piece, but also the mould itself is easily deformed under the extrusion, thereby changing the shape of the mould cavity. This deformation will directly affect the forming quality and accuracy of subsequent test pieces, and even may cause the error of experimental results. SUMMARY

[0004] The utility model provides a combined water stable base material forming mould to solve the defects that the existing cylindrical mould is difficult to demould, has poor demoulding quality and is easy to damage the mould.

[0005] The utility model provides a combined water stable base material forming mould, which comprises an inner cylinder and an outer cylinder.

[0006] The inner cylinder comprises a first arc-shaped plate and a second arc-shaped plate arranged oppositely, and a mould cavity is formed between the first arc-shaped plate and the second arc-shaped plate. First connecting parts are arranged on both sides of the first arc-shaped plate, and second connecting parts are arranged on both sides of the second arc-shaped plate. At least one first connecting part is detachably connected with a corresponding second connecting part. The outer cylinder is sleeved on the inner cylinder, and the inner wall of the outer cylinder cooperates with the outer wall of the inner cylinder.

[0007] According to the combined water stable base material forming mould, a limiting structure is arranged between the inner cylinder and the outer cylinder, and the limiting structure is used for limiting the relative rotation between the inner cylinder and the outer cylinder.

[0008] The utility model provides a combined water stable base material forming mould, one of the limiting protrusions and the limiting clamping groove is arranged on the outer wall of the inner cylinder, and the other is arranged on the inner wall of the outer cylinder, and the limiting protrusion and the limiting clamping groove are connected through clamping.

[0009] According to the combined water stable base material forming mould, one of the first connecting parts is detachably connected with the corresponding second connecting part, and the other first connecting part is hingedly connected with the corresponding second connecting part.

[0010] According to the combined water stable base material forming mould, two first connecting parts are detachably connected with the corresponding second connecting parts.

[0011] According to the combined water stable base material forming mould, the outer cylinder comprises oppositely arranged third and fourth arc-shaped plates, both sides of the third arc-shaped plate are provided with third connecting parts, both sides of the fourth arc-shaped plate are provided with fourth connecting parts, and at least one third connecting part is detachably connected with the corresponding fourth connecting part.

[0012] According to the combined water stable base material forming mould, one of the third connecting parts is detachably connected with the corresponding fourth connecting part, and the other third connecting part is hingedly connected with the corresponding fourth connecting part.

[0013] According to the combined water stable base material forming mould, two third connecting parts are detachably connected with the corresponding third connecting parts.

[0014] According to the combined water stable base material forming mould, the thickness of the outer cylinder is greater than that of the inner cylinder.

[0015] According to the combined water stable base material forming mould, the lower end surface of the outer cylinder is flush with the lower end surface of the inner cylinder, and the upper end surface of the outer cylinder is flush with the upper end surface of the inner cylinder.

[0016] The combined water stable base material forming mould provided by the utility model has the advantages that the inner cylinder is arranged as oppositely arranged first and second arc-shaped plates, at least one first connecting part of the first arc-shaped plate is detachably connected with the corresponding second connecting part of the second arc-shaped plate, when demoulding, the detachable first and second connecting parts can be detached, so that the mould cavity is separated from the formed test piece, and the demoulding difficulty is reduced.

[0017] The additional aspects and advantages of the present application will be given partly in the following description, and partly will become obvious from the following description, or will be understood by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0019] Figure 1 is a schematic view of a combined water stable base material forming mold provided by one of the embodiments of the present application.

[0020] Figure 2 is a schematic view of a first arc-shaped plate in a combined water stable base material forming mold provided by one of the embodiments of the present application.

[0021] Figure 3 is a schematic view of a second arc-shaped plate in a combined water stable base material forming mold provided by one of the embodiments of the present application.

[0022] Figure 4 is a schematic view of a combined water stable base material forming mold provided by another embodiment of the present application.

[0023] Figure 5 is a schematic view of a third arc-shaped plate in a combined water stable base material forming mold provided by another embodiment of the present application.

[0024] Figure 6 is a schematic view of a fourth arc-shaped plate in a combined water stable base material forming mold provided by another embodiment of the present application.

[0025] Reference signs:

[0026] 10, inner cylinder; 110, first arc-shaped plate; 111, first connecting part; 120, second arc-shaped plate; 121, second connecting part; 130, limiting protrusion; 20, outer cylinder; 210, third arc-shaped plate; 211, third connecting part; 220, fourth arc-shaped plate; 221, fourth connecting part; 230, limiting clamping groove; 30, mold cavity. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0030] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] The following is combined Figures 1 to 6 This utility model describes the combined water-stabilized base material molding die.

[0033] See Figures 1 to 3 As shown, the combined water-stabilized base material molding die provided in this embodiment of the utility model includes: an inner cylinder 10 and an outer cylinder 20.

[0034] The inner cylinder 10 includes a first arc-shaped plate 110 and a second arc-shaped plate 120 arranged opposite to each other. A mold cavity 30 is formed between the first arc-shaped plate 110 and the second arc-shaped plate 120. A first connecting part 111 is provided on both sides of the first arc-shaped plate 110, and a second connecting part 121 is provided on both sides of the second arc-shaped plate 120. At least one first connecting part 111 is detachably connected to the corresponding second connecting part 121. The outer cylinder 20 is sleeved on the inner cylinder 10, and the inner wall of the outer cylinder 20 is fitted with the outer wall of the inner cylinder 10.

[0035] The combined water-stabilized base material molding die provided by this utility model sets the inner cylinder 10 as a first arc-shaped plate 110 and a second arc-shaped plate 120 arranged opposite each other, and configures at least one first connecting part 111 of the first arc-shaped plate 110 and the corresponding second connecting part 121 of the second arc-shaped plate 120 as detachable connections. During demolding, the detachable first connecting part 111 and the second connecting part 121 can be separated, so that the mold cavity 30 is no longer in contact with the molded specimen, reducing the difficulty of demolding. Furthermore, by setting an outer cylinder 20 sleeved on the inner cylinder 10, the outer cylinder 20 can effectively protect the inner cylinder 10, preventing the inner cylinder 10 from deforming during the compaction molding process and reducing the risk of damaging the mold.

[0036] Specifically, the first arc plate 110 and the second arc plate 120 are both semi-circular arc plates. During the casting and compaction process, the first connecting part 111 and the second connecting part 121 of the first arc plate 110 and the second arc plate 120 are connected to each other, and a cylindrical mold cavity 30 can be formed between them.

[0037] It should be noted that at least one first connecting part 111 is detachably connected to the corresponding second connecting part 121, meaning that only one side of the first connecting part 111 and the corresponding second connecting part 121 can be detachably connected, while the other side of the first connecting part 111 and the corresponding second connecting part 121 can be fixedly connected (such as hinged). Alternatively, both sides of the first connecting part 111 and the corresponding second connecting part 121 can be detachably connected.

[0038] The detachable connection method of the first connecting part 111 and the second connecting part 121 can be abutment, snap-fit, threaded connection, or magnetic connection. Since the outer cylinder 20 can restrict the inner cylinder 10 when it is sleeved on the inner cylinder 10, preventing the first arc plate 110 and the second arc plate 120 of the inner cylinder 10 from deviating from their initial positions, the detachable connection method of the first connecting part 111 and the second connecting part 121 will not affect the molding quality.

[0039] See Figure 1 As shown, according to some embodiments of the present invention, a limiting structure is provided between the inner cylinder 10 and the outer cylinder 20, the limiting structure being used to restrict the relative rotation between the inner cylinder 10 and the outer cylinder 20.

[0040] By setting a limiting structure between the inner cylinder 10 and the outer cylinder 20, relative rotation between the inner cylinder 10 and the outer cylinder 20 can be prevented during operation, thereby improving the stability of the water-stabilized specimen mold and the specimen molding quality during operation.

[0041] Specifically, the limiting structure can employ various methods such as snap-fit ​​limiting, pin limiting, or locking screw abutment limiting. For example, when the limiting structure uses snap-fit ​​limiting, a limiting protrusion 130 and a limiting groove 230 can be provided between the inner cylinder 10 and the outer cylinder 20. The limiting protrusion 130 and the limiting groove 230 cooperate with each other to restrict the relative rotation between the inner cylinder 10 and the outer cylinder 20. When the limiting structure uses pin limiting, pin holes can be provided at corresponding positions on the inner cylinder 10 and the outer cylinder 20. By inserting the pin into the pin hole, the relative rotation between the inner cylinder 10 and the outer cylinder 20 can be restricted. When the limiting structure uses locking screw abutment limiting, a screw hole can be opened on the side wall of the outer cylinder 20. The locking screw is screwed into the screw hole and its end is pressed against the outer wall of the inner cylinder 10 to restrict the relative rotation between the inner cylinder 10 and the outer cylinder 20.

[0042] See Figure 1 As shown, according to some embodiments of the present invention, the limiting structure includes a limiting protrusion 130 and a limiting groove 230. One of the limiting protrusion 130 and the limiting groove 230 is provided on the outer wall of the inner cylinder 10, and the other is provided on the inner wall of the outer cylinder 20. The limiting protrusion 130 and the limiting groove 230 are engaged and cooperated.

[0043] By setting the limiting structure as a mutually cooperating limiting protrusion 130 and limiting groove 230, its structure is simple and easy to assemble.

[0044] As an example, in this embodiment, the limiting protrusion 130 is provided on the outer wall of the inner cylinder 10, and the limiting groove 230 is provided on the inner wall of the outer cylinder 20. During installation, the inner cylinder 10 can be placed into the outer cylinder 20 simply by aligning the limiting protrusion 130 on the inner cylinder 10 with the limiting groove 230 on the outer cylinder 20.

[0045] It should be noted that the number of limiting protrusions 130 and limiting slots 230 are one-to-one, and there is at least one of each. When there are multiple limiting protrusions 130 and limiting slots 230, they can be spaced out circumferentially.

[0046] As an example, in this embodiment, there are two limiting protrusions 130 and two limiting slots 230.

[0047] According to some embodiments of the present invention, one of the first connecting parts 111 is detachably connected to the corresponding second connecting part 121, and the other second connecting part 121 is hinged to the corresponding second connecting part 121.

[0048] By configuring one of the first connecting parts 111 and the corresponding second connecting part 121 as a detachable connection, and the other second connecting part 121 and the corresponding second connecting part 121 as a hinge, during demolding, it is only necessary to disassemble the detachable first connecting part 111 and the corresponding second connecting part 121, and then rotate the first arc plate 110 or the second arc plate 120 to remove the specimen. Furthermore, this structure allows for pre-connection of one side of the first arc plate 110 and the second arc plate 120 using a hinge, simplifying the operation.

[0049] In practice, a clearance space can be provided on the inner wall of the outer cylinder 20 to allow the hinge to make way, so as to prevent the hinge from interfering with the inner wall of the outer cylinder 20.

[0050] According to some embodiments of the present invention, both first connecting parts 111 and the corresponding second connecting parts 121 can be detachably connected.

[0051] By configuring both first connecting parts 111 and the corresponding second connecting parts 121 as detachable connections, it is easy to remove the molded specimen during demolding.

[0052] See Figures 4 to 6As shown, according to some embodiments of the present invention, the outer cylinder 20 includes a third arc-shaped plate 210 and a fourth arc-shaped plate 220 arranged opposite to each other. The third arc-shaped plate 210 is provided with a third connecting part 211 on both sides, and the fourth arc-shaped plate 220 is provided with a fourth connecting part 221 on both sides. At least one third connecting part 211 is detachably connected to the corresponding fourth connecting part 221.

[0053] By setting the outer cylinder 20 as a third arc plate 210 and a fourth arc plate 220 arranged opposite to each other, and configuring the third connecting part 211 of at least one third arc plate 210 and the fourth connecting part 221 corresponding to the fourth arc plate 220 as detachably connected, the detachably connected third connecting part 211 and fourth connecting part 221 can be disassembled first during demolding, so that the outer cylinder 20 is no longer tightly fitted to the inner cylinder 10, making it easier to remove the outer cylinder 20 from the inner cylinder 10 and simplifying the demolding operation.

[0054] It should be noted that at least one third connecting part 211 is detachably connected to the corresponding fourth connecting part 221, meaning that only one side of the third connecting part 211 and the corresponding fourth connecting part 221 can be detachably connected, while the other side of the third connecting part 211 and the corresponding fourth connecting part 221 are fixedly connected (such as hinged). Alternatively, both sides of the third connecting part 211 and the corresponding fourth connecting part 221 can be detachably connected.

[0055] To achieve the protective function of the outer cylinder 20 on the inner cylinder 10, the third connecting part 211 and the fourth connecting part 221 can be connected by threaded connectors. This structure has high connection tightness and is easy to disassemble and assemble.

[0056] According to some embodiments of the present invention, one of the third connecting parts 211 is detachably connected to the corresponding fourth connecting part 221, and the other third connecting part 211 is hinged to the corresponding fourth connecting part 221.

[0057] By configuring one of the third connecting parts 211 and the corresponding fourth connecting part 221 as a detachable connection, and the other third connecting part 211 and the corresponding fourth connecting part 221 as a hinge, during demolding, it is only necessary to disassemble the detachable third connecting part 211 and the corresponding fourth connecting part 221, and then rotate the third arc plate 210 or the fourth arc plate 220 to easily remove the outer cylinder 20. Furthermore, this structure allows for pre-connection of one side of the third arc plate 210 and the fourth arc plate 220 using a hinge, simplifying the operation.

[0058] According to some embodiments of the present invention, both third connecting parts 211 and their corresponding third connecting parts 211 can be detachably connected.

[0059] By configuring both third connecting parts 211 and the corresponding fourth connecting parts 221 as detachable connections, the outer cylinder 20 can be easily removed during demolding.

[0060] According to some embodiments of the present invention, the thickness of the outer cylinder 20 is greater than the thickness of the inner cylinder 10.

[0061] By setting the thickness of the outer cylinder 20 to be greater than that of the inner cylinder 10, the outer cylinder 20 can effectively protect the inner cylinder 10 and prevent the inner cylinder 10 from deforming.

[0062] Specifically, in this embodiment, both the inner cylinder 10 and the outer cylinder 20 are made of metal (such as iron, steel, etc.).

[0063] According to some embodiments of the present invention, the lower end face of the outer cylinder 20 is flush with the lower end face of the inner cylinder 10, and the upper end face of the outer cylinder 20 is flush with the upper end face of the inner cylinder 10, that is, the inner cylinder 10 and the outer cylinder 20 have the same height.

[0064] By configuring the inner cylinder 10 and the outer cylinder 20 to have the same height, the mold as a whole can be placed vertically and stably while effectively protecting the inner cylinder 10 at different height positions.

[0065] It should be noted that existing water-stabilized specimen molds are prone to damage during demolding, resulting in the inability to demold the formed water-stabilized specimens in a timely manner. The water-stabilized specimen mold provided by this invention is particularly suitable for harsh desert environments. During demolding, no demolding device is required; the inner cylinder 10 and outer cylinder 20 can be directly disassembled, preventing damage to the water-stabilized specimens during demolding and ensuring the smooth progress of the experiment.

[0066] Furthermore, research has found that ultra-large particle size water-stabilized base courses exhibit excellent resistance to drying shrinkage, thermal shrinkage cracks, and arching. To address these issues, related technologies have increased the maximum particle size of the water-stabilized gradation to 50-60mm. However, when conducting indoor tests using such ultra-large particle size crushed stone, traditional 150mm x 150mm molds are insufficient, requiring the use of larger molds. Furthermore, the diameter of the demolding device needs to be adjusted accordingly when using larger molds, increasing testing costs. The combined water-stabilized specimen mold provided by this invention allows for direct removal of ultra-large particle size water-stabilized specimens from the mold without the need for a demolding device, thus having a wider range of applications.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A combined molding die for water-stabilized base course materials, characterized in that, include: The inner cylinder includes a first arc-shaped plate and a second arc-shaped plate arranged opposite to each other, a mold cavity is formed between the first arc-shaped plate and the second arc-shaped plate, a first connecting part is provided on both sides of the first arc-shaped plate, a second connecting part is provided on both sides of the second arc-shaped plate, and at least one of the first connecting parts is detachably connected to the corresponding second connecting part. An outer cylinder is fitted onto an inner cylinder, and the inner wall of the outer cylinder mates with the outer wall of the inner cylinder.

2. The combined water-stabilized base material molding die according to claim 1, characterized in that, A limiting structure is provided between the inner cylinder and the outer cylinder, which is used to restrict the relative rotation between the inner cylinder and the outer cylinder.

3. The combined water-stabilized base material molding die according to claim 2, characterized in that, The limiting structure includes a limiting protrusion and a limiting slot. One of the limiting protrusion and the limiting slot is located on the outer wall of the inner cylinder, and the other is located on the inner wall of the outer cylinder. The limiting protrusion and the limiting slot engage with each other.

4. The combined water-stabilized base material molding die according to claim 1, characterized in that, One of the first connecting parts is detachably connected to the corresponding second connecting part, and the other first connecting part is hinged to the corresponding second connecting part.

5. The combined water-stabilized base material molding die according to claim 1, characterized in that, Both of the first connecting parts and the corresponding second connecting parts can be detachably connected.

6. The combined water-stabilized base material molding die according to claim 1, characterized in that, The outer cylinder includes a third arc-shaped plate and a fourth arc-shaped plate arranged opposite to each other. The third arc-shaped plate has a third connecting part on both sides, and the fourth arc-shaped plate has a fourth connecting part on both sides. At least one of the third connecting parts is detachably connected to the corresponding fourth connecting part.

7. The combined water-stabilized base material molding die according to claim 6, characterized in that, One of the third connecting parts is detachably connected to the corresponding fourth connecting part, and the other third connecting part is hinged to the corresponding fourth connecting part.

8. The combined water-stabilized base material molding die according to claim 6, characterized in that, Both of the third connecting parts and their corresponding third connecting parts can be detachably connected.

9. The combined water-stabilized base material molding die according to any one of claims 1 to 8, characterized in that, The thickness of the outer cylinder is greater than the thickness of the inner cylinder.

10. The combined water-stabilized base material molding die according to any one of claims 1 to 8, characterized in that, The lower end face of the outer cylinder is flush with the lower end face of the inner cylinder, and the upper end face of the outer cylinder is flush with the upper end face of the inner cylinder.

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