Cemented filling material test piece preparation device

Abstract

The utility model discloses a preparation device for a cemented filling material test piece, which belongs to the technical field of test instruments, is novel and reasonable in structure, simplifies the process of'filling-tamping-jolt 'in the conventional test piece preparation process, realizes the filling, compaction and shaping of a cemented filling material at one step, ensures the sample preparation quality, improves the sample preparation efficiency and reduces the production cost. The problems that an existing test piece preparation process is complex, low in speed and low in efficiency are solved. Meanwhile, filling and compaction shaping of the cemented filling material are completed by adopting a single set of equipment, and compared with the prior art, the equipment is small in size, lower in operation cost and higher in sample preparation efficiency. In some technical schemes, a plurality of forming molds can be connected to the cylinder barrel at the same time, a plurality of test pieces with the same specification or different specifications and shapes can be prepared at a time, operation is easy, the sample preparation effect is good, the preparation speed and preparation efficiency of the cemented filling material test pieces are improved, and meanwhile the sample preparation diversity is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of test instruments, relates to the preparation of a bonding filling material test piece, and particularly relates to a bonding filling material test piece preparation device. Background Art

[0002] Cementitious filling materials are made by mixing sand, stone, industrial waste residue, and other aggregates with cement and other binders in a certain proportion with water. After curing, they develop a certain strength. During the research and development process of cementitious filling materials, to ensure their strength reaches the desired target, aggregates, binders, and water are mixed in varying proportions to form a cementitious body. This body is then placed in a specially designed mold, compacted, and then vibrated on a vibration table to create a cementitious filling material specimen. The specimen is then placed in a constant temperature and humidity curing chamber to test the strength of the specimens at different ages and determine the mix parameters that achieve the desired target strength.

[0003] As can be seen from the above, the preparation of cementitious filling material specimens generally involves a process of "filling-tamping-vibrating", each of which requires a separate piece of equipment. This not only results in a large footprint and high operating costs for the entire preparation system, but also cumbersome operation steps, slow preparation speed, and low preparation efficiency. Therefore, it is necessary to design a device that can quickly prepare cementitious filling material specimens. Utility Model Content

[0004] The purpose of the present utility model is to provide a device for preparing cementing filling material specimens, which can realize the rapid preparation of cementing filling material specimens with a single device, which not only simplifies the preparation system, but also simplifies the specimen preparation process, and can solve the problems of the above-mentioned existing cementing filling material specimen preparation technology, such as large system footprint, high operating cost and low preparation efficiency.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The utility model provides a device for preparing a cementing filling material specimen, comprising:

[0007] A cylinder, the inner cavity of which is used to contain cement filling material, and the side wall and / or the bottom of the cylinder are provided with a slurry outlet hole;

[0008] A forming mold having a cavity adapted to the shape of the test piece to be prepared, the forming mold being connected to the slurry outlet, and the cavity being in communication with the inner cavity of the cylinder;

[0009] The pressure mechanism includes a pressure drive and a piston adapted to the inner cavity of the cylinder. The pressure drive is connected to the piston and is used to drive the piston to move in the cylinder so as to press the adhesive filling material in the cylinder into the forming mold through the piston.

[0010] In one embodiment, the bonding filling material specimen preparation device further includes a support member, and the cylinder and / or the pressure drive are arranged on the support member.

[0011] In one embodiment, the pressure drive is an electric telescopic cylinder, a hydraulic cylinder or a jack, and the pressure drive is provided on the support member.

[0012] In one embodiment, a through hole for the expansion nail to pass through is opened on the bottom plate of the support member, and the support member is used to be fixed to the ground or table top through the expansion nail.

[0013] In one embodiment, a plurality of the slurry outlet holes are opened on the side wall of the cylinder, and the forming mold is detachably connected to the slurry outlet holes.

[0014] In one embodiment, any of the slurry outlet holes is arranged close to the bottom of the cylinder.

[0015] In one embodiment, any of the slurry outlet holes is provided with a detachable plug, and the plug is used to close the slurry outlet hole.

[0016] In one embodiment, the forming mold is a columnar mold with an open end and a sealed bottom at the other end, and the open end of the columnar mold is provided with a threaded pipe joint for threaded connection with the slurry outlet hole.

[0017] In one embodiment, a weeping hole is further provided at the bottom end of the columnar mold, and the diameter φ of the weeping hole is 0.8 mm to 1.3 mm.

[0018] In one embodiment, there are multiple cylindrical molds, and the cavity of any one of the cylindrical molds is prismatic or cylindrical.

[0019] Compared with the prior art, the utility model has achieved the following technical effects:

[0020] The device for preparing cementitious filling material specimens proposed in this utility model has a novel and reasonable structure. It simplifies the existing "filling-tamping-vibrating" process for preparing specimens, achieving seamless filling, compaction, and shaping of the cementitious filling material. This ensures sample quality while improving sample preparation efficiency, resolving the problems of the existing sample preparation process, which is complex, slow, and inefficient. Furthermore, a single set of equipment is used to complete both filling and compaction shaping of the cementitious filling material. Compared to existing technologies, the device is smaller, has lower operating costs, and offers higher sample preparation efficiency.

[0021] In some technical solutions, multiple forming molds can be connected to the cylinder at the same time, so that multiple specimens of the same or different specifications and shapes can be prepared at one time. The operation is simple and the sample preparation effect is good, which improves the preparation speed and efficiency of the cementitious filling material specimens and also increases the diversity of sample preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 is a schematic structural diagram of a device for preparing a cementitious filling material specimen according to one or more embodiments;

[0024] Figure 2 for Figure 1 AA cross-section of

[0025] Figure 3 Schematic diagram of the structure of the forming mold in Example 2;

[0026] Figure 4 for Figure 3 BB cross-section diagram;

[0027] Figure 5 Schematic diagram of the structure of the forming mold in Example 3;

[0028] Figure 6 for Figure 5 CC cross-section diagram;

[0029] Figure 7 Schematic diagram of the structure of the forming mold in Example 4;

[0030] Figure 8 for Figure 7 DD cross-section diagram.

[0031] In the figure, the accompanying drawings are marked as follows:

[0032] 100. Cemented filling material specimen preparation device;

[0033] 1. Cylinder; 11. Slurry outlet hole;

[0034] 2. Molding mold; 21. Threaded pipe joint; 22. Cavity;

[0035] 3. Piston;

[0036] 4. Jack; 41. Handle; 42. Pressure gauge; 43. Piston rod;

[0037] 5. Support parts.

[0038] 6. Expansion nails. DETAILED DESCRIPTION

[0039] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0040] The purpose of the present utility model is to provide a device for preparing cementing filling material specimens, which can realize the rapid preparation of cementing filling material specimens with a single device, which not only simplifies the preparation system, but also simplifies the specimen preparation process, and can solve the problems of the above-mentioned existing cementing filling material specimen preparation technology, such as large system footprint, high operating cost and low preparation efficiency.

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0042] Example 1

[0043] like Figure 1 and Figure 2 As shown, this embodiment proposes a bonding filling material specimen preparation device 100, including a cylinder 1, a forming mold 2 and a pressure mechanism, wherein the cylinder 1 has an inner cavity, and the inner cavity is used to hold the prepared bonding filling material, and the bonding filling material is generally in a slurry state, and a slurry outlet hole 11 is opened on the side wall and / or the bottom of the cylinder 1; the forming mold 2 has a cavity 22 adapted to the shape of the specimen to be prepared, and the forming mold 2 is connected to the slurry outlet hole 11, and its cavity 22 is connected to the inner cavity of the cylinder 1; the pressure mechanism includes a pressure drive and a piston 3 adapted to the inner cavity of the cylinder 1, which is movable The outer periphery of the plug 3 and the inner wall of the inner cavity of the cylinder 1 are in a clearance fit, and the piston 3 can slide along the inner cavity of the cylinder 1. The pressure drive is connected to the piston 3 and is mainly used to drive the piston 3 to move in the cylinder 1, so as to press the cement filling material in the cylinder 1 into the forming mold 2 through the slurry outlet 11 through the piston 3. The pressure drive can also ensure that the cement filling material in the forming mold 2 is fully filled and compacted by continuously applying pressure to the cement filling material in the cylinder 1, thereby achieving the filling, compaction and shaping of the cement filling material in one go, ensuring the quality of the sample while improving the efficiency of the sample. At the same time, the filling and compaction of the cement filling material are completed using a single set of equipment. Compared with the existing technology, the equipment is small in size and has lower operating costs.

[0044] In one embodiment, the cementitious filling material specimen preparation device 100 further includes a support member 5, on which at least one of the cylinder 1 and the pressure driver is disposed. Preferably, both the cylinder 1 and the pressure driver are disposed on the support member 5. The support member 5 can be a support frame, a support platform, or other structural forms, primarily providing mounting space for the cylinder 1 and the pressure driver, integrating the cylinder 1 and the pressure driver into one. More preferably, the cylinder 1 is generally arranged with its opening facing upward, and accordingly, the pressure driver is located above the cylinder 1.

[0045] In one embodiment, the pressure drive can be an electric telescopic cylinder, a hydraulic cylinder or a jack 4. Taking the pressure drive using a jack 4 as an example, it is set on the top of the support member 5. Figure 1 and Figure 2 As shown, the jack 4 is preferably a manual hydraulic jack, which is equipped with a piston column 43, a pressure gauge 42 and a handle 41. The bottom end of the piston column 43 is connected to the aforementioned piston 3. The manual hydraulic jack is a common lifting drive mechanism that can drive the piston 3 to rise and fall inside the cylinder 1. It can also lift the piston 3 above the cylinder 1 to open the top opening of the cylinder 1 and inject cement filling material into the cylinder 1.

[0046] In one embodiment, the piston 3 may be a circular plate, and the inner wall of the inner cavity of the cylinder 1 may be cylindrical. Alternatively, the piston 3 may be a cubic pressure plate, and the inner wall of the inner cavity of the cylinder 1 may be prismatic. For example, a cubic pressure plate may have a cross-sectional length of 50 mm and a thickness (i.e., height) of 25 mm, and the inner wall of the inner cavity of the cylinder 1 may have a cross-sectional length of 50.5 mm and a height of 220 mm.

[0047] In one embodiment, in order to ensure that the slurry does not overflow when the piston 3 moves in the cylinder 1 and to ensure the pressure of the piston 3 on the slurry, a sealing strip is also provided on the outer periphery of the piston 3, and the piston 3 slides and seals with the inner wall of the inner cavity of the cylinder 1 through the sealing strip.

[0048] In one embodiment, a through hole is opened on the bottom plate of the support member 5 for the expansion nail 6 to pass through. When in use, in order to ensure the overall stability of the equipment, the support member 5 can be fixed to the ground or a related table (such as a test table in a laboratory) by the expansion nail 6.

[0049] In one embodiment, the forming mold 2 is preferably detachably connected to the slurry outlet hole 11. In order to improve the convenience of disassembly and assembly of the forming mold 2, the slurry outlet hole 11 is preferably only opened on the side wall of the cylinder 1.

[0050] In one embodiment, to improve sample preparation efficiency, multiple slurry discharge holes 11 can be simultaneously opened on the side wall of the cylinder 1, and each slurry discharge hole 11 is arranged close to the bottom of the cylinder 1, which is conducive to the sufficient discharge of the slurry in the cylinder 1 into the forming mold 2. The slurry discharge holes 11 on the cylinder 1 can be uniform in size, or can be set to different sizes according to the size specifications and inlet size of the forming mold 2.

[0051] In one embodiment, the slurry outlet holes 11 are preferably evenly spaced around the outer periphery of the side wall of the cylinder 1, and one or more circles of slurry outlet holes 11 can be provided in the axial direction of the cylinder 1. The specific distribution of the slurry outlet holes 11 on the side wall of the cylinder 1 can be flexibly set according to actual needs.

[0052] In one embodiment, a detachable plug can be provided on any of the slurry outlet holes 11, and the plug is used to close the slurry outlet hole 11. The plug can be a stopper or a bottle cap structure, which can be sealed with the slurry outlet hole 11 to ensure that a certain slurry outlet hole 11 is in a closed state when it is not in use, thereby achieving the flexibility of selective use of the slurry outlet holes 11 on the cylinder 1. The user can provide a corresponding number of slurry outlet holes 11 on the cylinder 1 by opening the plug according to the number of test pieces to be formed, and connect a corresponding number of forming molds 2.

[0053] In one embodiment, the forming mold 2 is preferably a cylindrical mold with an open end and a sealed bottom at the other end. The open end of the cylindrical mold is provided with a threaded pipe joint 21 for threaded connection with the slurry outlet hole 11, and the corresponding slurry outlet hole 11 is provided with an internal threaded hole adapted to the threaded pipe joint 21. The forming mold 2 is inserted into the slurry outlet hole 11 through the threaded pipe joint 21 and is threadedly fastened with the slurry outlet hole 11. The threaded connection method is convenient for disassembly and assembly, and can ensure the connection sealing and reliability during connection.

[0054] In one embodiment, the forming mold 2 is an axially split mold. For example, in the case of a cylindrical forming mold 2, the mold 2 is composed of at least two halves assembled circumferentially along the axis, thereby forming a closed cavity 22. The adjacent halves are detachably connected by bolts or other connecting components, facilitating demolding of the test piece formed therein.

[0055] In one embodiment, the bottom end of the columnar mold is further provided with a weeping hole, the diameter φ of the weeping hole being 0.8 mm to 1.3 mm. As a preferred embodiment, the diameter φ of the weeping hole is 1 mm.

[0056] In one embodiment, there are multiple cylindrical molds, and the cavity 22 of any cylindrical mold is prismatic or cylindrical. The shapes and dimensions of the cavities of all cylindrical molds can be completely different, non-completely different, or completely different, so that a suitable cylindrical mold can be selected according to the shape and dimensions of the specimen to be prepared, providing diversity in the preparation of cementitious filling material specimens.

[0057] When preparing a bonding filling material specimen, first seal the selected forming mold 2 with the slurry outlet 11 of the cylinder 1 through the threaded pipe joint 21, then pour the prepared slurry (i.e., bonding filling material) into the cylinder 1, and then press the handle 41 of the jack 4 to drive the piston column 43 downward. The piston column 43 pushes the piston 3 downward to press the slurry so that the slurry is filled into the forming mold 2; when the pressure of the pressure gauge 42 reaches the preset value, stop pressing the handle 41, maintain the pressure at this time and wait for 30 seconds, remove the forming mold 2, and demold it, thereby completing the preparation of the bonding filling material specimen.

[0058] The above-mentioned cementitious filling material specimen preparation device 100 has a rational structural design and simplifies the existing "filling-tamping-vibrating" process for specimen preparation. It achieves seamless filling, compaction, and shaping of the cementitious filling material, ensuring sample quality while improving sample preparation efficiency. This solves the problems of the existing specimen preparation process, which is complex, slow, and inefficient. Furthermore, a single set of equipment is used to complete both filling and compaction and shaping of the cementitious filling material. Compared with existing technologies, the device is smaller in size and has lower operating costs.

[0059] In addition, multiple forming molds 2 can be connected to the cylinder 1 at the same time, and multiple specimens of the same or different specifications and shapes can be prepared at one time. The operation is simple and the sample preparation effect is good, which further improves the preparation speed and efficiency of the cementitious filling material specimens.

[0060] Example 2

[0061] like Figure 3 and Figure 4 As shown, this embodiment provides a forming mold 2, wherein the internal cavity 22 is cylindrical in shape, with a cross-sectional diameter of φ50mm and an axial length of 100mm. This φ50 (inner diameter) × 100mm cylindrical mold meets the national standard for testing the compressive strength of test specimens.

[0062] In this embodiment, the forming mold 2 is coaxial with the cavity 22 , and its outer shape can be cylindrical or prism-shaped. When the prism-shaped is adopted, it can be a quadrangular prism, such as a cube.

[0063] Example 3

[0064] like Figure 5 and Figure 6 As shown, this embodiment provides a forming mold 2, wherein the internal cavity 22 is cylindrical in shape, with a cross-sectional diameter of φ50mm and an axial length of 25mm. This φ50 (inner diameter) × 25mm cylindrical mold meets the national standard for testing the tensile strength of test specimens.

[0065] In this embodiment, the forming mold 2 is coaxial with the cavity 22 , and its outer shape can be cylindrical or prism-shaped. When the prism-shaped is adopted, it can be a quadrangular prism, such as a cube.

[0066] Example 4

[0067] like Figure 7 and Figure 8 As shown, this embodiment provides a molding die 2, wherein the internal cavity 22 is in the shape of a quadrangular prism, such as a cube, with a square cross-section. The cross-sectional dimensions of the cavity 22 are 70.7 mm x 70.7 mm, and accordingly, the axial length of the cavity 22 is 70.7 mm. This 70.7 (inner side) x 70.7 (inner side) x 70.7 (inner side) mm cube mold meets the national standard for testing the shear strength of test specimens.

[0068] In this embodiment, the forming mold 2 is coaxial with the cavity 22 , and its outer shape can be cylindrical or prismatic.

[0069] Example 5

[0070] This embodiment provides a bonding filling material specimen preparation device 100, wherein the forming mold 2 thereof includes at least one forming mold 2 of Embodiments 2 to 4.

[0071] As a preferred solution, the outer diameter of the threaded pipe joint 21 of any one of the forming molds 2 in Examples 2 to 4 is preferably φ40 mm. Accordingly, the slurry outlet hole 11 on the cylinder 1 is preferably welded to the cylinder 1 and has an inner diameter of φ40 mm.

[0072] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A device for preparing a cementitious filling material specimen, characterized in that: include: A cylinder (1), the inner cavity of which is used to contain cement filling material, a plurality of slurry outlet holes (11) are opened on the side wall of the cylinder (1), and any of the slurry outlet holes (11) are arranged close to the bottom of the cylinder (1); A forming mold (2) having a mold cavity (22) adapted to the shape of a test piece to be prepared, the forming mold (2) being connected to the slurry outlet hole (11), and the mold cavity (22) being communicated with the inner cavity of the cylinder (1); the forming mold (2) being a columnar mold with an open end and a sealed bottom at the other end, the open end of the columnar mold being provided with a threaded pipe joint (21) for threaded connection with the slurry outlet hole (11), and the bottom end of the columnar mold being provided with a weeping hole, the hole diameter φ of the weeping hole being 0.8 mm to 1.3 mm; A pressure mechanism comprises a pressure drive and a piston (3) adapted to the inner cavity of the cylinder (1); the piston (3) slides and seals with the inner wall of the inner cavity of the cylinder (1) through a sealing strip; the pressure drive is connected to the piston (3) and is used to drive the piston (3) to move in the cylinder (1) so as to press the adhesive filling material in the cylinder (1) into the forming mold (2) through the piston (3).

2. The cementitious filling material specimen preparation device according to claim 1, characterized in that: It also comprises a support member (5), on which the cylinder (1) and / or the pressure drive are arranged.

3. The cementitious filling material specimen preparation device according to claim 2, characterized in that: The pressure drive is an electric telescopic cylinder, a hydraulic cylinder or a jack (4), and the pressure drive is arranged on the support member (5).

4. The cementitious filling material specimen preparation device according to claim 2 or 3, characterized in that: A through hole for the expansion nail (6) to pass through is provided on the bottom plate of the support member (5), and the support member (5) is used to be fixed to the ground or a table top through the expansion nail (6).

5. The cementitious filling material specimen preparation device according to claim 1, characterized in that: Any of the slurry outlet holes (11) is provided with a detachable plug, and the plug is used to close the slurry outlet hole (11).

6. The cementitious filling material specimen preparation device according to claim 1, characterized in that: There are multiple columnar molds, and the mold cavity (22) of any columnar mold is prismatic or cylindrical.

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