Concrete sample preparation device

Abstract

The utility model discloses a preparation device of a concrete sample, and belongs to the field of concrete prefabrication. The preparation device of the concrete sample comprises a sample mold, a supporting seat, a sliding barrel fixedly arranged at the top end of the supporting seat, a bearing assembly for receiving the concrete sample falling off from the sample mold, and a driving assembly for driving the sample mold to do reciprocating linear movement relative to the sliding barrel, when the sample mold is located in the sliding cylinder, the top surface opening of the sample mold faces the bearing assembly; when the driving assembly drives the sample mold to move downwards to the lowest point, the edge of the opening end of the sample mold collides with the top end of the supporting base. The device has the beneficial effects that in the process that a concrete sample is demolded from the sample mold, the sample mold does reciprocating rectilinear motion through the driving assembly, the open end of the sample mold impacts the supporting seat for multiple times, the concrete sample is demolded from the sample mold through inertia, the manual demolding time is shortened, and the labor intensity is relieved.

Description

Technical Field

[0001] This utility model relates to the field of precast concrete, and in particular to a device for preparing concrete samples. Background Technology

[0002] In the process of concrete testing, in order to ensure the safety and reliability of engineering structures, it is necessary to conduct rigorous tests on various properties of concrete, which involves the preparation and testing of concrete samples. Sample preparation usually involves filling concrete slurry into a specially made mold, allowing it to cure in the mold for a certain period of time, and finally removing it from the mold to obtain the required sample.

[0003] Based on material, specimen molds can be divided into cast iron specimen molds, cast steel specimen molds, and plastic specimen molds. Cast iron and cast steel specimen molds consist of several detachable parts connected by bolts. During demolding, the fixing bolts are loosened, and the parts are disassembled. Cast iron and cast steel specimen molds are relatively heavy, making molding and demolding inconvenient, and the bolt connection operation is complex. Plastic specimen molds are molded as a single piece and cannot be disassembled. Therefore, a vent hole is left on the bottom surface of the plastic specimen mold. During demolding, an air pump is used to inject gas into the specimen mold through the vent hole, blowing the specimen out of the plastic specimen mold. However, the prerequisite for easy demolding of plastic specimen molds is that a release agent must be thoroughly applied inside the specimen mold, and there must be no air leaks except through the vent hole; otherwise, pressurized gas will escape through the leaks and will not be able to push the specimen out of the specimen mold. A major problem with using plastic specimen molds is that the concrete may undergo micro-expansion during the curing process. This causes the specimen to adhere very tightly to the inner wall of the mold, and the pressurized gas provided by a conventional air pump is often insufficient to completely expel the specimen from the mold. Increasing the pressure may cause the bottom of the mold to crack, leading to demolding failure and wasting valuable mold material. Another problem with using plastic specimen molds is that some molds contain adsorbed components in the concrete. These components may adsorb the demolding tool into the concrete during the hardening process, resulting in ineffective physical separation between the specimen and the inner wall of the mold. This increases the friction during demolding, which also seriously affects the efficiency and quality of demolding. Utility Model Content

[0004] This invention provides a concrete sample preparation device that replaces the existing manual demolding method, achieving automated demolding, improving production efficiency, and saving labor. At the same time, it also reduces the problem of unstable concrete sample quality that exists with manual demolding.

[0005] The technical solution of this utility model is as follows:

[0006] A concrete sample preparation apparatus includes a sample mold with a cavity structure that is closed on the bottom and sides and open on the top. It further includes: a support base, a C-shaped shell structure with an open top and one side, the top surface of the support base providing an impact surface for the sample mold without damaging the concrete sample, and the cavity inside the support base providing a space for the concrete sample to fall after detaching from the sample mold; a slide cylinder with open top and bottom ends, fixedly mounted on the top of the support base, and the sample mold slidably disposed within the slide cylinder; a receiving component for receiving the concrete sample detached from the sample mold; and a driving component for driving the sample mold to reciprocate linearly relative to the slide cylinder; when the sample mold is located inside the slide cylinder, the top opening of the sample mold faces the receiving component; when the driving component drives the sample mold downwards to the lowest point, the edge of the open end of the sample mold collides with the top of the support base.

[0007] Furthermore, the receiving component is movable, and it reciprocates between the inside and outside of the support base.

[0008] Furthermore, the supporting components include: a base plate, cushioning devices at the four corners of the upper surface of the base plate, a load-bearing plate fixedly installed on the top of the cushioning device, and an elastic pad on the top surface of the load-bearing plate; and casters at the four corners of the bottom surface of the base plate.

[0009] Furthermore, the buffer device includes a sleeve, a spring, and a push rod; the bottom end of the sleeve is located at the four corners of the upper surface of the base plate, the sleeve is a cylindrical structure with an open top, the spring is located inside the sleeve, the bottom end of the push rod is connected to the top end of the spring, and the top end of the push rod is fixedly connected to the bottom surface of the load-bearing plate.

[0010] Furthermore, a through hole is provided radially on the shaft of the push rod, and a through-hole is provided on the side wall of the sleeve. A limiting rod is provided through the through hole and the long slot, and the limiting rod slides in the long slot.

[0011] Furthermore, the receiving component also includes a push-pull handle that connects to the base plate.

[0012] According to the aforementioned concrete sample preparation device, an annular plate is fixedly installed around the top opening of the sample mold, and the side of the annular plate slides in contact with the inner cavity surface of the slide cylinder; when the driving component drives the sample mold to move downward to the lowest point, the annular plate collides with the top of the support seat; a groove is provided around the annular plate, and a protrusion that matches the groove is provided around the inner cavity surface of the slide cylinder, and the protrusion slides relative to the groove when the sample mold slides in the slide cylinder.

[0013] Furthermore, the drive assembly includes a drive motor, a turntable, a connecting rod, a connecting block, and a gantry frame; the output end of the drive motor is fixedly connected to the center position of the turntable, and a connecting rod is rotatably connected to the side wall edge of the turntable away from the drive motor via a pin, and the other end of the connecting rod is rotatably connected to the connecting block; the gantry frame includes a crossbar and vertical bars located at both ends of the crossbar and perpendicular to the crossbar, and the connecting block is detachably connected to the crossbar of the gantry frame; a rotating shaft is provided at the center position of the two opposite sides of the sample mold near the closed bottom surface, and a round hole is opened at the end of each of the two vertical bars of the gantry frame away from the crossbar, and the rotating shaft passes through the round hole of the vertical bar.

[0014] Furthermore, the concrete sample preparation device also includes a fixing component for fixing and installing the drive component; the fixing component includes a fixing plate and a motor bracket disposed on one side of the fixing plate, and the drive motor is fixedly installed on the motor bracket.

[0015] Furthermore, the height of the motor bracket on the fixing plate is adjustable; the fixing assembly also includes bolts that connect to the fixing plate and the motor bracket; the fixing plate has two parallel elongated bolt mounting holes in the longitudinal direction, and the motor bracket has two bolt mounting holes spaced apart in the horizontal direction.

[0016] The bolt passes through the bolt mounting round hole and the bolt mounting oblong hole, and the end of the bolt is connected to a nut.

[0017] The concrete sample preparation device provided by this utility model has at least the following advantages compared with the prior art:

[0018] (1) The concrete sample preparation device provided by this utility model can conveniently prepare concrete samples. During the demolding process of the concrete sample from the sample mold, the sample mold is reciprocated linearly by the drive component. The open end of the sample mold impacts the support seat multiple times. The concrete sample is demolded from the sample mold by inertia, avoiding the situation where the concrete sample is difficult to remove due to incomplete demolding. This reduces the time for manual demolding and reduces labor intensity.

[0019] (2) The center positions of the two opposite sides of the sample mold near the closed bottom surface are rotatably connected to the gantry. When the operator grabs the horizontal bar of the gantry and lifts it up, due to the effect of gravity and the change of the center position, the sample mold will automatically rotate to face downwards, which is convenient for connecting with the connecting block.

[0020] (3) A ring plate is fixedly installed around the top opening of the sample mold. The side of the ring plate slides in contact with the inner surface of the slide cylinder. When the driving component drives the sample mold to move downward to the lowest point, the ring plate collides with the top of the support seat to avoid damaging the sample mold during the collision and affecting the shape of the next concrete sample. The ring plate has grooves around its perimeter, and the inner surface of the slide cylinder has protrusions that cooperate with the grooves. When the sample mold slides in the slide cylinder, the protrusions slide relative to the grooves to avoid the sample mold from shifting during the slide cylinder.

[0021] (4) The receiving component has a buffering effect to prevent the concrete sample from falling freely and causing damage to the concrete sample; at the same time, the receiving component can move the concrete sample to a designated place, which can also reduce the impact of bumps on the transportation route that cause cracks in the concrete sample, affect efficiency, and reduce losses. Attached Figure Description

[0022] Figure 1 A three-dimensional view of the apparatus for preparing concrete samples in state one.

[0023] Figure 2 A partial cross-sectional front view of the apparatus for preparing concrete samples, in state one.

[0024] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0025] Figure 4 A perspective view of the apparatus for preparing concrete samples with the slide removed, in state one.

[0026] Figure 5 A partial cross-sectional front view of the concrete sample preparation apparatus in state two.

[0027] Figure 6 A perspective view of the apparatus for preparing concrete samples with the slide removed, in state two.

[0028] Figure 7 A 3D view of the supporting components;

[0029] Figure 8 A three-dimensional view of the buffer device;

[0030] Figure 9 This is a front view of the buffer device;

[0031] Figure 10 for Figure 9 Sectional view along the BB direction;

[0032] Figure 11 This is a 3D view of the push rod;

[0033] Figure 12 This is a three-dimensional view of the sleeve;

[0034] Figure 13 Three-dimensional representation of the connection between the sample mold and the ring plate. Figure 1 ;

[0035] Figure 14 Three-dimensional representation of the connection between the sample mold and the ring plate. Figure 2 ;

[0036] Figure 15 This is a three-dimensional view of the slide cylinder;

[0037] Figure 16 This is a 3D view of the connecting blocks;

[0038] Figure 17 This is a side view of the connecting block;

[0039] Figure 18 A 3D view of the gantry frame;

[0040] Figure 19 Three-dimensional view of the connection state between the drive motor and the fixed component Figure 1 ;

[0041] Figure 20 Three-dimensional view of the connection state between the drive motor and the fixed component Figure 2 ;

[0042] Figure 21 This is a 3D view of the motor bracket.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Sample mold; 11. Rotating shaft;

[0045] 2. Support base;

[0046] 3. Sliding cylinder; 31. Protrusion;

[0047] 4. Supporting components; 41. Base plate; 42. Buffer device; 421. Sleeve; 4211. Long slot; 422. Spring; 423. Top rod; 4231. Through hole; 424. Limiting rod; 43. Load-bearing plate; 44. Elastic pad; 45. Casters; 46. Push-pull handle;

[0048] 5. Drive assembly; 51. Drive motor; 52. Turntable; 53. Connecting rod; 54. Connecting block; 541. Connecting column; 542. Connecting groove; 55. Gantry frame; 551. Crossbar; 552. Longitudinal bar; 553. Recessed part;

[0049] 6. Annular plate; 61. Groove;

[0050] 7. Fixing component; 71. Fixing plate; 711. Bolt mounting elongated hole; 72. Motor bracket; 721. Bolt mounting round hole; 73. Bolt; 74. Nut. Detailed Implementation

[0051] To make the technical problem to be solved, the technical solution and advantages of this utility model clearer, the following will be described in conjunction with the accompanying drawings. Figures 1 to 21 The technical solution of this utility model is clearly and completely described in conjunction with specific embodiments.

[0052] like Figures 1 to 6 As shown, the concrete sample preparation device includes a sample mold 1, a support base 2, a slide cylinder 3, a receiving component 4, and a driving component 5.

[0053] The sample mold 1 is a cavity structure with a closed bottom and four sides and an open top. Sample mold 1 is used to hold concrete to form a concrete sample. The concrete mixture is poured into the cavity of sample mold 1 and solidifies to form the concrete sample. The support base 2 is a C-shaped shell structure with an open top and one side. The top surface of the support base 2 provides an impact surface for sample mold 1 without damaging the concrete sample. The cavity inside the support base 2 provides space for the concrete sample to fall after it detaches from sample mold 1. The top and bottom of the slide cylinder 3 are open. The slide cylinder 3 is fixedly mounted on the top of the support base 2, and sample mold 1 is slidably positioned inside the slide cylinder 3. The receiving assembly 4 is used to receive the concrete sample that detaches from sample mold 1. When sample mold 1 is inside the slide cylinder 3, the top opening of sample mold 1 faces the receiving assembly 4. The driving assembly 5 is used to drive sample mold 1 to reciprocate linearly relative to the slide cylinder 3. When the driving assembly 5 drives sample mold 1 downward to the lowest point, the edge of the open end of sample mold 1 collides with the top of the support base 2. Due to the obstruction of the support seat 2, the frame of the sample mold 1 collides with the support seat 2, and the concrete sample inside the sample mold 1 will exert a downward force due to inertia, thereby breaking free from the restraint of the sample mold 1 and achieving the demolding effect.

[0054] Specifically, the sample mold 1 is made of plastic material, with dimensions of 150mm × 150mm × 150mm, and a sidewall thickness of 15mm. Before pouring the concrete mixture into the inner cavity of the sample mold 1, a release agent is added to the inner wall of the sample mold 1. The release agent can be solid tracing paper or wax paper. The tracing paper or wax paper is cut according to the shape and size of the bottom and sides of the mold, and then laid on the bottom and sides of the sample mold 1. The tracing paper or wax paper is thin and has a certain degree of rigidity, and does not absorb water, which can effectively isolate the concrete from the inner wall of the sample mold 1.

[0055] Based on the above embodiments, as a preferred embodiment, the receiving component 4 is movable and can reciprocate between the inside and outside of the support base 2. When the receiving component 4 is inside the support base 2, the concrete sample falls onto the receiving component 4 after detaching from the sample mold 1. Moving the receiving component 4, the receiving component 4 passes through the open opening on one side of the support base 2, bringing the concrete sample out of the concrete sample preparation device.

[0056] Furthermore, the receiving component 4 is a transfer trolley structure, facilitating the removal of the concrete sample from the sample mold 1 from inside the support base 2. As a preferred embodiment, such as... Figure 7 As shown, the receiving component 4 includes a base plate 41, buffer devices 42 at the four corners of the upper surface of the base plate 41, a load-bearing plate 43 fixedly mounted on the top of the buffer devices 42, and an elastic pad 44 provided on the top surface of the load-bearing plate 43 to further reduce the impact of the concrete sample on the receiving component 4 and avoid damage to the concrete sample. Casters 45 are provided at the four corners of the bottom surface of the base plate 41 to enable the moving of the receiving component 4. The elastic pad 44 can be a sponge pad to provide cushioning.

[0057] Furthermore, such as Figures 8 to 10 As shown, the buffer device 42 includes a sleeve 421, a spring 422, and a push rod 423. The bottom end of the sleeve 421 is located at the four corners of the upper surface of the base plate 41. The sleeve 421 is a cylindrical structure with an open top. The spring 422 is located inside the sleeve 421. The bottom end of the push rod 423 is connected to the top end of the spring 422. The top end of the push rod 423 is fixedly connected to the bottom surface of the load-bearing plate 43. Specifically, the push rod 423 and the load-bearing plate 43 can be connected by screws.

[0058] Furthermore, to prevent the push rod 423 from disengaging from the sleeve 421 due to the springback action of the spring 422, a through hole 4231 is provided radially on the shaft of the push rod 423, such as... Figure 11 As shown; the sleeve 421 has through-holes 4211 on its side wall, such as... Figure 12 As shown; a limiting rod 424 passes through the through hole 4231 and the long slot 4211, and the limiting rod 424 slides in the long slot 4211. When the buffer device 42 is not subjected to external impact, the limiting rod 424 is at the top of the long slot 4211 of the sleeve 421. Due to the blocking effect of the limiting rod 424, the top rod 423 is connected to the sleeve 421. When the concrete sample falls freely onto the elastic pad 44, the elastic pad 44 can absorb part of the impact, and the other part of the impact continues to be transmitted downward, forcing the top rod 423 to move downward and compress the spring 422. The spring 422 absorbs the remaining impact, ensuring that the concrete sample falls smoothly onto the receiving component 4 after it falls freely from the sample mold 1, and avoiding the concrete sample from colliding and being damaged during free fall.

[0059] To facilitate the movement of the receiving component 4, the receiving component 4 also includes a push-pull handle 46 connected to the base plate 41, which makes it convenient for operators to move the receiving component 4.

[0060] Based on the above embodiments, as a preferred embodiment, an annular plate 6 is fixedly provided around the top opening of the sample mold 1, such as... Figure 13 and Figure 14 As shown. The side of the annular plate 6 slides in contact with the inner surface of the sliding cylinder 3. When the driving assembly 5 drives the sample mold 1 downward to the lowest point, the annular plate 6 collides with the top of the support seat 2, avoiding damage to the sample mold 1 during the collision and affecting the shape of the next concrete sample.

[0061] Furthermore, the annular plate 6 has grooves 61 around its perimeter; the inner surface of the slide cylinder 3 has protrusions 31 that mate with the grooves 61, such as... Figure 15 As shown. When the sample mold 1 slides in the slide cylinder 3, the protrusion 31 slides relative to the groove 61, which avoids the sample mold 1 from shifting during sliding in the slide cylinder 3, and ensures that the sample mold 1 will not be locally damaged when the annular plate 6 collides with the top of the support seat 2, so that the test can be carried out smoothly.

[0062] Based on the above embodiments, as a preferred embodiment, the drive assembly 5 includes a drive motor 51, a turntable 52, a connecting rod 53, a connecting block 54, and a gantry frame 55. The output end of the drive motor 51 is fixedly connected to the center position of the turntable 52. The connecting rod 53 is rotatably connected to the side wall edge of the turntable 52 away from the drive motor 51 via a pin. The other end of the connecting rod is rotatably connected to the connecting block 54. The structure of the gantry frame 55 is as follows: Figure 18 As shown, the gantry frame 55 includes a crossbar 551 and vertical bars 552 located at both ends of the crossbar 551, perpendicular to the crossbar 551. The connecting block 54 is detachably connected to the crossbar 551 of the gantry frame 55. A rotating shaft 11 is provided at the center of the two opposite sides of the sample mold 1 near the closed bottom surface. Circular holes are opened at the ends of the two vertical bars 552 of the gantry frame 55 away from the crossbar 551. The rotating shaft 11 passes through the circular holes of the vertical bars 552, realizing the movable connection between the gantry frame 55 and the sample mold 1. The drive motor 51 rotates, driving the turntable 52 to rotate. The rotation of the turntable 52 drives the connecting rod 53 to rotate. The rotation of the connecting rod 53 drives the connecting block 54 to rotate. Due to the limiting effect of the slide cylinder 3, the connecting block 54 drives the gantry frame 55 to move up and down. The gantry frame 55 drives the sample mold 1 to reciprocate linearly within the slide cylinder 3.

[0063] like Figures 2 to 4 As shown, the drive motor 51 drives the connecting rod 53 to move. The end of the connecting rod 53 furthest from the drive motor 51 moves to its lowest point, at which point the edge of the opening of the sample mold 1 collides with the top of the support base 2. Figure 5 and Figure 6As shown, the drive motor 51 drives the connecting rod 53 to move. The end of the connecting rod 53 furthest from the drive motor 51 moves to its highest point, at which point the distance between the edge of the opening of the sample mold 1 and the support base 2 is the greatest. The operation of the drive motor 51 drives the sample mold 1 to reciprocate linearly in the slide cylinder 3.

[0064] Specifically, the connecting rod 53 has round holes at both ends. A pin is installed in one of the round holes at one end of the connecting rod 53 to connect with the turntable 52, enabling relative rotation between the turntable 52 and the connecting rod 53. A connecting post 541 is provided on one side of the connecting block 54. The connecting post 541 passes through the round hole at the other end of the connecting rod 53, enabling rotational connection between the connecting rod 53 and the connecting block 54. The structure of the connecting block 54 is as follows: Figure 16 and Figure 17 As shown, a connecting groove 542 is provided on one side of the connecting block 54, and an inner recess 553 is provided at the center of the crossbar 551 of the gantry frame 55. The inner recess 553 of the gantry frame 55 is fitted into the connecting groove 542, so as to achieve a stable connection between the connecting block 54 and the gantry frame 55 and avoid the problem that the connection position between the connecting block 54 and the gantry frame 55 changes during the process of the connecting rod 53 driving the connecting block 54 to move, which would cause the center of gravity of the sample mold 1 to be unstable.

[0065] When the operator grabs the crossbar 551 of the gantry frame 55 and lifts it upwards, due to gravity and the change in the center position, the sample mold 1 will automatically rotate so that the opening faces downwards, making it convenient to connect with the connecting block 54.

[0066] As an optional implementation of this embodiment, the drive motor 51 is a synchronous motor, which can also be replaced by a stepper motor, an AC asynchronous motor with a gearbox, or a DC motor.

[0067] In addition, the drive motor 51, turntable 52 and connecting rod 53 can be replaced by push rod motor. The sample mold 1 can be moved back and forth linearly relative to the slide cylinder 3 through a transmission method such as a screw and nut assembly or a gear and rack assembly. Any transmission method that can meet the usage requirements is within the protection scope of this utility model.

[0068] Based on the above embodiments, as a preferred embodiment, the concrete sample preparation apparatus further includes a fixing component 7 for fixing and installing the drive component 5. The fixing component includes a fixing plate 71 and a motor bracket 72 disposed on one side of the fixing plate 71, and the drive motor 51 is fixedly installed on the motor bracket 72.

[0069] Furthermore, to ensure that when the drive motor 51 moves the sample mold 1 to its lowest point, the open end face of the sample mold 1 contacts the support base 2, the concrete sample preparation device can adjust the height position of the drive assembly 5, and the height position of the motor bracket 72 on the fixed plate 71 can be adjusted. Specifically: Figure 19 and Figure 20As shown, the fixing assembly 7 also includes bolts 73 connected to the fixing plate 71 and the motor bracket 72, with a nut 74 movably connected to one end of the bolt 73; the fixing plate 71 has two parallel elongated bolt mounting holes 711 in the longitudinal direction, and the motor bracket 72 has two bolt mounting holes 721 spaced apart in the horizontal direction. The structure of the motor bracket 72 is as follows. Figure 21 As shown, the motor bracket 72 has an L-shaped structure, including a vertical part and a horizontal part. Two bolt mounting holes 721 are formed on the vertical part, corresponding horizontally to the bolt mounting elongated holes 711. The upper surface of the horizontal part of the motor bracket 72 contacts the drive motor 51. Bolts 73 pass through the bolt mounting holes 721 and 711, and nuts 74 are connected to the ends of the bolts 73. The motor bracket 72 is fixedly connected to the fixing plate 71. The height of the motor bracket 72 on the fixing plate 71 can be flexibly adjusted. After determining the installation position of the drive motor 51, where the opening end face of the sample mold 1 contacts the support base 2 when the drive motor 51 moves to its lowest point, the bolts 73 and nuts 74 are tightened to fix the motor bracket 72 onto the fixing plate 71. The fixing plate 71 is fixedly connected to the support base 2 and the slide cylinder 3 respectively.

[0070] The concrete sample preparation device provided by this utility model can conveniently prepare concrete samples. During the demolding process of the concrete sample from the sample mold, the driving component moves the sample mold back and forth in a linear motion. The open end of the sample mold impacts the support seat multiple times, and the concrete sample is demolded from the sample mold by using inertia. This avoids the situation where the concrete sample is difficult to remove due to incomplete demolding, reduces the time of manual demolding and reduces labor intensity.

[0071] The receiving component 4 has a buffering function to prevent the concrete sample from being damaged by free fall; at the same time, the receiving component 4 can move the concrete sample to a designated place, which can also reduce the impact of bumps on the transportation route on the concrete sample causing cracks, affecting efficiency and reducing losses.

[0072] The method for preparing concrete samples using the concrete sample preparation device of this invention includes the following steps:

[0073] Step 1: Add a release agent to the inner surface of the sample mold 1. The release agent should be made of a non-absorbent material, such as tracing paper or waxed paper. These materials have sufficient hardness to ensure good release, but will not soften or be damaged due to prolonged contact with moisture.

[0074] Step 2: Pour the concrete mixture into sample mold 1, place the sample mold 1 containing the concrete mixture on a vibrating table and vibrate for 20 seconds, then place it in an environment of 20±2℃ for 24 hours to allow the concrete mixture to solidify in sample mold 1.

[0075] Step 3: After curing, install the gantry 55 on the sample mold 1, lift the crossbar 551 of the gantry 55 upwards, and move the sample mold 1 into the slide cylinder 3. Then install the crossbar 551 of the gantry 55 onto the connecting block 54.

[0076] Step 4: Turn on the drive motor 51 to make the sample mold 1 reciprocate linearly in the slide cylinder 3; when the sample mold 1 moves to the lowest point, the annular plate 6 collides with the support seat 2. After multiple impacts, the concrete sample is detached from the sample mold 1 by inertia. The concrete sample falls onto the receiving component 4 through the support seat 2 to collect the concrete sample.

[0077] Step 5: After the demolding is completed, turn off the drive motor 51 and clean the concrete sample preparation device and any scattered debris.

[0078] This method replaces the existing manual demolding method, achieving automated demolding, improving production efficiency, and saving labor. At the same time, it also reduces the problem of unstable concrete sample quality that exists with manual demolding.

[0079] The concrete sample preparation device provided by this invention can significantly improve production efficiency and reduce the wear and tear on concrete samples and sample molds caused by improper demolding, thereby reducing production costs. Furthermore, with the continuous advancement of modern industrial automation, higher technical requirements are being placed on the demolding process of concrete samples. The application of this patented technology can not only meet current needs but also provide strong support for future automated and intelligent production. For example, it can be integrated into automated production lines and combined with other advanced production equipment and control systems to achieve fully automated control of concrete sample preparation, further improving production efficiency and product quality.

[0080] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing 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 this utility model.

[0081] Finally, it should be noted that the above-described embodiments are merely specific implementations of this utility model, used to illustrate the technical solutions of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. Such modifications, changes, 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, and should all be covered within the protection scope of this utility model.

Claims

1. A concrete sample preparation apparatus, comprising a sample mold (1) with a cavity structure that is closed on the bottom and sides and open on the top, characterized in that, Also includes: Support base (2), C-shaped shell structure with open top and one side of support base (2), top surface of support base (2) provides impact surface for sample mold (1) without damaging concrete sample, cavity inside support base (2) provides fall space for concrete sample after falling off sample mold (1). The slide cylinder (3) has an open top and a closed bottom. The slide cylinder (3) is fixedly set on the top of the support base (2), and the sample mold (1) is slidably set inside the slide cylinder (3). The receiving component (4) is used to receive the concrete specimen that has fallen from the specimen mold (1); and Drive component (5) to drive sample mold (1) to reciprocate linearly relative to slide cylinder (3); When the sample mold (1) is located inside the slide (3), the top opening of the sample mold (1) faces the receiving component (4); when the driving component (5) drives the sample mold (1) to move downward to the lowest point, the edge of the opening end of the sample mold (1) collides with the top of the support seat (2).

2. The apparatus for preparing concrete samples according to claim 1, characterized in that, The receiving component (4) is movable, and the receiving component (4) moves back and forth between the inside and outside of the support base (2).

3. The apparatus for preparing concrete samples according to claim 2, characterized in that, The receiving component (4) includes: The base plate (41) has buffer devices (42) at the four corners of the upper surface of the base plate (41), and a load-bearing plate (43) is fixedly installed on the top of the buffer device (42). An elastic pad (44) is provided on the top surface of the load-bearing plate (43). Casters (45) are provided at the four corners of the bottom surface of the base plate (41).

4. The apparatus for preparing concrete samples according to claim 3, characterized in that, The buffer device (42) includes a sleeve (421), a spring (422) and a push rod (423); The bottom end of the sleeve (421) is located at the four corners of the upper surface of the base plate (41). The sleeve (421) is a cylindrical structure with an open top. The spring (422) is located inside the sleeve (421). The bottom end of the push rod (423) is connected to the top end of the spring (422). The top surface of the push rod (423) is fixedly connected to the bottom surface of the load-bearing plate (43).

5. The apparatus for preparing concrete samples according to claim 4, characterized in that, The shaft of the push rod (423) has a through hole (4231) in the radial direction, and the side wall of the sleeve (421) has a through slot (4211) with opposite sides. A limiting rod (424) passes through the through hole (4231) and the slot (4211), and the limiting rod (424) slides in the slot (4211).

6. The apparatus for preparing concrete samples according to claim 5, characterized in that, The receiving component also includes a push-pull handle (46) connected to the base plate (41).

7. The apparatus for preparing concrete samples according to claim 1, characterized in that, An annular plate (6) is fixedly installed around the opening on the top surface of the sample mold (1), and the side of the annular plate (6) slides in contact with the inner cavity surface of the slide cylinder (3). When the driving component (5) drives the sample mold (1) to move downward to the lowest point, the annular plate (6) collides with the top of the support seat (2); The annular plate (6) has grooves (61) around its perimeter, and the inner surface of the slide cylinder (3) has protrusions (31) that cooperate with the grooves (61). When the sample mold (1) slides in the slide cylinder (3), the protrusions (31) and the grooves (61) slide relative to each other.

8. The apparatus for preparing concrete samples according to claim 7, characterized in that, The drive assembly (5) includes a drive motor (51), a turntable (52), a connecting rod (53), a connecting block (54), and a gantry (55); The output end of the drive motor (51) is fixedly connected to the center position of the turntable (52). The side wall edge of the turntable (52) away from the drive motor (51) is rotatably connected to a connecting rod (53) by a pin. The other end of the connecting rod (53) is rotatably connected to the connecting block (54). The gantry (55) includes a crossbar (551) and vertical bars (552) located at both ends of the crossbar (551) perpendicular to the crossbar (551). The connecting block (54) is detachably connected to the crossbar (551) of the gantry (55). A rotating shaft (11) is provided at the center of the opposite two sides of the sample mold (1) near the closed bottom surface. The ends of the two vertical bars (552) of the gantry (55) away from the crossbar (551) are provided with round holes, and the rotating shaft (11) passes through the round holes of the vertical bars (552).

9. The apparatus for preparing concrete samples according to claim 8, characterized in that, The concrete specimen preparation device also includes a fixing component (7) for fixing and installing the drive component (5). The fixing component (7) includes a fixing plate (71) and a motor bracket (72) disposed on one side of the fixing plate (71), and the drive motor (51) is fixedly mounted on the motor bracket (72).

10. The apparatus for preparing concrete samples according to claim 9, characterized in that, The height of the motor bracket (72) on the fixed plate is adjustable; The fixing assembly (7) also includes bolts (73) that connect to the fixing plate (71) and the motor bracket (72); The fixing plate (71) has two parallel elongated bolt mounting holes (711) in the longitudinal direction, and the motor bracket (72) has two bolt mounting holes (721) spaced apart in the horizontal direction. The bolt (73) passes through the bolt mounting round hole (721) and the bolt mounting oblong hole (711), and the end of the bolt (73) is connected to the nut (74).

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