Compaction table for cement mortar test

Abstract

The utility model relates to the technical field of cement mortar testing equipment, and discloses a jolt ramming table for a cement mortar test, which comprises a test bed, and a first motor is inserted in the left side of the interior of the test bed; the transmission block is inserted into the right side of the interior of the test bed, springs are connected to the left side and the right side of the transmission block, a cam is coaxially connected to a rotor of the first motor, a driving arm is connected to the outer side of the front portion of the cam through a bearing, a bearing plate is connected to the top end of a connecting block, and a vibration table is installed in the middle of the upper surface of the bearing plate. According to the compaction table for the cement mortar test, a first motor drives a cam to rotate, so that a driving arm can drive a transmission block to move left and right, the vibration table can synchronously move left and right when driving a mold on the surface of the vibration table to vibrate, cement mortar can be helped to better fill all corners of the mold, bubbles and gaps are reduced, and the compaction efficiency is improved. Therefore, the compactness of the sample is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of cement mortar testing equipment, specifically a vibration table for cement mortar testing. Background Technology

[0002] Cement mortar is a material made by mixing cement, fine aggregate (such as sand), and water in a certain proportion. It is mainly used to test the strength of cement, i.e., the cement grade. It is a standardized mixture that does not contain coarse aggregate, and therefore is different from cement mortar and cement concrete, which are used for masonry and structural filling in building construction, respectively. A vibration table is a laboratory device used to simulate vibration or impact to prepare soil, concrete, or other building material samples with standard density and moisture content. In cement mortar testing, the vibration table is used to prepare samples to ensure that the samples have a consistent density and structure, which is crucial for testing mechanical properties such as compressive strength and flexural strength.

[0003] Common vibratory tables are based on a vibration mechanism. They use an electric motor to drive one or more vibrating elements (such as eccentric blocks or electromagnets) to generate periodic vibrations. During the test, loose cement mortar is placed into a mold and then placed on the vibratory table. By adjusting the vibration frequency and amplitude, the material is compacted in the mold to form the desired sample.

[0004] However, this method only causes the mold to vibrate up and down because the motor drives the eccentric block during vibration. This results in the cement mortar not filling all corners of the mold well, increasing the probability of air bubbles and voids, thus reducing the density of the sample. At the same time, the unidirectional vibration causes the cement mortar to be unevenly distributed in the mold, resulting in density differences in the sample and reducing the accuracy of the cement mortar test. It cannot meet the working requirements of the vibration table. Therefore, a vibration table for cement mortar testing is proposed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a vibration table for cement mortar testing, which solves the technical problem that unidirectional vibration can cause cement mortar to be unevenly distributed in the mold, resulting in density differences in the sample.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a vibration table for cement mortar testing, comprising:

[0009] The test bench has base plates connected to both its front and rear sides. A first motor is installed inside the left side of the test bench, and the right side of the test bench has a hollow structure.

[0010] A transmission block is inserted inside the right side of the test bench. Springs are connected to both the left and right sides of the transmission block. A cam is coaxially connected to the rotor of the first motor. A drive arm is connected to the outer front part of the cam through a bearing. The right side of the drive arm is connected to the corresponding position of the front part of the transmission block through a bearing.

[0011] A slide is provided on the top right side of the test bench. A connecting block is inserted inside the slide, and the bottom end of the connecting block is connected to the top of the transmission block. A bearing plate is connected to the top of the connecting block, and a vibration table is installed in the middle of the upper surface of the bearing plate.

[0012] Preferably, the outer ends of the springs are connected to the corresponding positions on the left and right sides of the inner cavity of the test bench, and the slide is connected to the right inner cavity of the test bench, which facilitates the left and right movement of the connecting block.

[0013] Preferably, the upper surface of the base plate is connected to the left and right sides with support columns, the upper inner side of each support column is connected to a guide rod, and the front and rear sides of the bearing plate are connected to bushings. The guide rods pass through the inside of the bushings, which improves the stability of the bearing plate when it moves left and right.

[0014] Preferably, a second motor is mounted on the front of the vibration table via a bracket, and an assembly table is mounted on the top of the vibration table. The assembly table has a hollow interior, which facilitates the loading and unloading of the mold during the test.

[0015] Preferably, a screw seat is connected to the top center of the assembly table, and a screw is screwed into the inside of the screw seat, with the bottom end of the screw penetrating through the corresponding position on the top of the assembly table.

[0016] Preferably, the bottom end of the screw is movably connected to a pressure plate via a ball bearing. The area of ​​the pressure plate matches the inner cavity of the assembly table. A handwheel is coaxially mounted on the top end of the screw. Rotating the handwheel can drive the screw to move the pressure plate up and down, thereby pressing down and limiting the top of the mold. This pressing down increases the contact force between the bottom of the mold and the vibration table, which helps to transfer vibration energy to the mold and the cement mortar inside, thereby improving the compaction effect.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a vibration table for cement mortar testing, which has the following advantages:

[0019] This vibration table for cement mortar testing uses a first motor to drive the rotation of a cam, which in turn drives the transmission block to move left and right via a drive arm. This, in turn, causes the bearing plate and the vibration table to reciprocate left and right. This allows the vibration table to vibrate the mold on its surface while simultaneously moving left and right. This left and right movement of the mold during vibration helps the cement mortar to better fill all corners of the mold, reducing air bubbles and voids, thereby improving the density of the sample. At the same time, the left and right movement of the vibration table allows the material to be distributed more evenly in the mold, reducing density differences in the sample caused by uneven compaction. Furthermore, the reciprocating left and right movement during compaction helps to eliminate internal cracks and other potential defects in the sample, thereby improving the integrity of the sample. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the assembly structure of the test bench and the bearing plate of this utility model;

[0022] Figure 3 This is a cross-sectional view of the assembly table of this utility model.

[0023] In the diagram: 1. Test bench; 2. Base plate; 3. First motor; 4. Transmission block; 5. Cam; 6. Drive arm; 7. Slide groove; 8. Connecting block; 9. Spring; 10. Bearing plate; 11. Bushing; 12. Support column; 13. Guide rod; 14. Vibration table; 15. Second motor; 16. Assembly table; 17. Screw joint; 18. Screw; 19. Pressure plate; 20. Handwheel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides a technical solution: a vibration table for cement mortar testing, comprising a test bench 1, a base plate 2, a first motor 3, a transmission block 4, a cam 5, a drive arm 6, a slide 7, a connecting block 8, a spring 9, a bearing plate 10, a bushing 11, a support column 12, a guide rod 13, a vibration table 14, a second motor 15, an assembly table 16, a screw joint 17, a screw 18, a pressure plate 19, and a handwheel 20.

[0026] Please see Figure 1 and Figure 2The test bench 1 is connected to the base plate 2 on both the front and rear sides. The first motor 3 is inserted into the left side of the test bench 1, and the right side of the test bench 1 is a hollow structure.

[0027] The transmission block 4 is inserted inside the right side of the test bench 1. Springs 9 are connected to both the left and right sides of the transmission block 4. The rotor of the first motor 3 is coaxially connected to the cam 5. The front outer side of the cam 5 is connected to the drive arm 6 through the bearing, and the right side of the drive arm 6 is connected to the corresponding position of the front of the transmission block 4 through the bearing.

[0028] A slide groove 7 is located on the top right side of the test bench 1. A connecting block 8 is inserted inside the slide groove 7, and the bottom end of the connecting block 8 is connected to the top of the transmission block 4. A bearing plate 10 is connected to the top of the connecting block 8. A vibration table 14 is installed in the middle of the upper surface of the bearing plate 10. The outer ends of the springs 9 are connected to the corresponding positions on the left and right sides of the inner cavity of the test bench 1. The slide groove 7 is connected to the right inner cavity of the test bench 1. Support columns 12 are connected to the left and right sides of the upper surface of the base plate 2. Guide rods 13 are connected to the upper inner side of the support columns 12. Bushings 11 are connected to the front and rear sides of the bearing plate 10. The guide rods 13 pass through the interior of the bushings 11 and drive the rotation of the cam 5 through the first motor 3, thereby allowing the vibration table 14 to rotate. The drive arm 6 drives the transmission block 4 to move left and right, which in turn drives the bearing plate 10 and the vibration table 14 to reciprocate left and right. This allows the vibration table 14 to vibrate the mold on its surface and move left and right simultaneously. The left and right movement of the mold during vibration helps the cement mortar to better fill the corners of the mold, reducing air bubbles and voids, thereby improving the density of the sample. At the same time, the left and right movement of the vibration table 14 can make the material more evenly distributed in the mold, reducing the density difference of the sample caused by uneven compaction. Furthermore, the reciprocating left and right movement during compaction can help eliminate cracks and other potential defects inside the sample, thereby improving the integrity of the sample.

[0029] Please see Figure 1 The front of the vibration table 14 is equipped with a second motor 15 via a bracket, and the top of the vibration table 14 is equipped with an assembly platform 16. The assembly platform 16 has a hollow interior. Please refer to [link / reference]. Figure 3 A screw seat 17 is connected to the top center of the assembly table 16. A screw 18 is screwed into the inside of the screw seat 17. The bottom end of the screw 18 passes through the corresponding position on the top of the assembly table 16. The bottom end of the screw 18 is movably connected to a pressure plate 19 through a ball bearing. The area of ​​the pressure plate 19 matches the inner cavity of the assembly table 16. A handwheel 20 is coaxially installed on the top of the screw 18. The screw 18 can be rotated by the handwheel 20 to drive the pressure plate 19 to move up and down, so that the top of the mold can be pressed down and limited. The downward pressure can increase the contact force between the bottom of the mold and the vibration table 14, which helps to transfer vibration energy to the mold and the cement mortar inside, thereby improving the compaction effect.

[0030] This design uses a first motor 3 to drive the rotation of cam 5, which in turn drives the transmission block 4 to move left and right via drive arm 6. This, in turn, drives the bearing plate 10 and vibration table 14 to reciprocate left and right. This allows the vibration table 14 to vibrate the mold on its surface while simultaneously moving left and right. This left and right movement of the mold during vibration helps the cement mortar to better fill the corners of the mold, reducing air bubbles and voids, thereby improving the density of the sample. At the same time, the left and right movement of the vibration table 14 allows the material to be distributed more evenly in the mold, reducing density differences in the sample caused by uneven compaction. Furthermore, the reciprocating left and right movement during compaction helps to eliminate internal cracks and other potential defects in the sample, thereby improving the integrity of the sample. Simultaneously, the handwheel 20 can rotate the screw 18 to drive the pressure plate 19 to move up and down, allowing the top of the mold to be pressed down and limited. This downward pressure increases the contact force between the bottom of the mold and the vibration table 14, which helps to transfer vibration energy to the mold and the cement mortar inside, thereby improving the compaction effect.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rammer table for cement mortar tests, characterized in that, Include: Test bench (1), the front and rear sides of the test bench (1) are connected with the bottom plate (2), the left side of the inside of the test bench (1) is inserted with the first motor (3), and the right side of the inside of the test bench (1) is a hollow structure; Transmission block (4), inserted in the right side of the inside of the test bench (1), the left and right sides of the transmission block (4) are connected with the spring (9), the rotor of the first motor (3) is coaxially connected with the cam (5), the front outer side of the cam (5) is connected with the driving arm (6) through the bearing, and the right side of the driving arm (6) is connected with the front corresponding position of the transmission block (4) through the bearing; The chute (7) is opened in the top right side of the test bench (1), the inside of the chute (7) is inserted with the connecting block (8), and the bottom end of the connecting block (8) is connected with the top of the transmission block (4), the top end of the connecting block (8) is connected with the bearing plate (10), and the upper surface of the bearing plate (10) is installed with the vibration table (14).

2. A rammer table for use in cement mortar testing according to claim 1, characterized in that: The outer ends of the springs (9) are connected with the corresponding positions of the left and right sides of the inner cavity of the test bench (1), and the chute (7) is connected with the right side of the inner cavity of the test bench (1).

3. A rammer table for use in cement mortar testing according to claim 1, characterized in that: The upper surfaces of the left and right sides of the bottom plate (2) are connected with the support column (12), the inner sides of the upper parts of the support column (12) are connected with the guide rod (13), the front and rear sides of the bearing plate (10) are connected with the shaft sleeve (11), and the guide rod (13) penetrates the inside of the shaft sleeve (11).

4. A rammer table for use in cement mortar testing according to claim 1, characterized in that: The front of the vibration table (14) is installed with the second motor (15) through the foot support, the top of the vibration table (14) is installed with the assembly table (16), and the inside of the assembly table (16) is a hollow structure.

5. A rammer table for use in cement mortar testing according to claim 4, characterized in that: The top middle position of the assembly table (16) is connected with the screw joint seat (17), the inside of the screw joint seat (17) is screwed with the screw rod (18), and the bottom end of the screw rod (18) penetrates the top corresponding position of the assembly table (16).

6. A rammer table for use in cement mortar testing according to claim 5, characterized in that: The bottom end of the screw rod (18) is movably connected with the pressing plate (19) through the ball bearing, the area of the pressing plate (19) is matched with the inner cavity of the assembly table (16), and the top end of the screw rod (18) is coaxially installed with the hand wheel (20).

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