A rapid slump detector for self-compacting concrete

Abstract

This utility model discloses a rapid slump tester for self-compacting concrete, relating to the field of self-compacting concrete testing technology. It includes two horizontally spliced ​​plates. A fixed cylinder is vertically installed at the center of the side where the tops of the two spliced ​​plates are close to each other. Vertically installed sliding sleeves are fixed at the corners where the tops of the two spliced ​​plates are far apart. A sliding rod slides vertically inside the sliding sleeve, and a horizontal fixed rod is detachably connected to the top of the sliding rod. The fixed rod faces the fixed cylinder and is fixed to the outer arc wall of the fixed cylinder. In this utility model, the cylinder is forced to rise vertically by the sliding rod sliding along the sliding sleeve, significantly reducing the impact of tilting or shaking on concrete flow during lifting. After lifting the cylinder, a limiting post is inserted into the limiting hole at the bottom of the limiting plate to achieve secondary fixation between the cylinder and the base, facilitating subsequent observation, testing, and cleaning. The structure is simple and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of self-compacting concrete testing technology, specifically a rapid slump tester for self-compacting concrete. Background Technology

[0002] Self-compacting concrete is a special type of concrete with high fluidity, anti-segregation properties, and excellent gap-passing ability. Its core characteristic is that it can automatically fill the formwork and wrap the reinforcing bars under gravity without vibration, forming a uniform and dense structure. This characteristic makes it widely used in engineering scenarios with dense reinforcement, complex shapes, or limited construction space, such as nuclear power plant containment structures, bridge joints, and shear walls of high-rise buildings. Its key performance indicators include spreadability, T50 flow time, and anti-segregation properties, which need to be strictly tested to ensure construction quality.

[0003] Traditional slump testing relies on manual lifting of the slump cone. During operation, it is not possible to ensure that the cone is lifted vertically, which can easily affect the accuracy of the parameters. Furthermore, many existing testing devices are fixed and require a large amount of space, making it difficult to adapt to the dynamic changes in construction sites. Especially in multi-story buildings or narrow spaces, the equipment is time-consuming and labor-intensive to move, which seriously restricts the testing efficiency.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this invention is to provide a rapid slump tester for self-compacting concrete to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a rapid slump tester for self-compacting concrete, comprising two horizontally spliced ​​plates, a fixed cylinder vertically arranged at the center of the side where the tops of the two spliced ​​plates are close to each other, and a vertically arranged sliding sleeve fixed at the corners where the tops of the two spliced ​​plates are far apart from each other. A sliding rod slides vertically inside the sliding sleeve, and a horizontal fixed rod is detachably connected to the top of the sliding rod. The fixed rod is oriented towards the fixed cylinder and fixed to the outer arc wall of the fixed cylinder. Each of the two fixed rods is fixed with a vertically arranged limiting plate on the same side away from the fixed cylinder. A limiting hole one is horizontally opened at the center of the top of the side wall of the sliding sleeve near the limiting plate. A limiting hole two is horizontally opened through the top and bottom of the limiting plate. A limiting post one is inserted into the limiting hole one.

[0007] Furthermore, both of the splicing panels have scale lines on their tops. On one side wall of the splicing panel near the other, multiple splicing blocks are fixed, linearly and uniformly distributed along its length. On one side wall of the other splicing panel, a splicing groove is formed at the position of the splicing block. Locking mechanisms are provided at both ends of the side wall of the two splicing panels that are close to each other along the length of the splicing panel. A rotating groove 1 is formed at the center of both ends of the side wall of the two splicing panels that are close to each other. The rotating groove 1 extends along the length of the splicing panel and penetrates the outer wall of the splicing panel. A rotating groove 2 is formed at the end of the rotating groove 1 that is close to the splicing groove. The rotating groove 2 is interconnected with the rotating groove 1, and the inner arc wall cross-sectional radius of the rotating groove 2 is larger than the inner arc wall cross-sectional radius of the rotating groove 1.

[0008] Furthermore, a fan-shaped rotating groove three is formed on the outer edge of the rotating groove two near the rotating groove one on the splicing plate. The rotating groove three is interconnected with the rotating groove two but not directly connected to the rotating groove one. When the two splicing plates are spliced ​​together, the rotating groove one and rotating groove two on the two splicing plates are spliced ​​into a complete cylindrical groove, and the rotating groove three is spliced ​​into a complete annular groove. The locking mechanism set at the end of the side wall of the splicing plate includes a limiting block one rotatably set in the rotating groove one, a limiting block two rotatably set in the rotating groove two, the limiting block one and the limiting block two are coaxially fixed, a limiting post two is fixed on the outer edge of the side wall of the limiting block two near the limiting block one, the limiting post two rotates in the rotating groove three, and a limiting groove is formed on the side wall of the limiting block one away from the limiting block two.

[0009] Furthermore, a storage slot is provided on the side of the rotating groove two away from the rotating groove one on the splicing plate. A fixing column one is fixed on the side wall of the limiting column two away from the limiting block one. A slide rail spring is sleeved on the outside of the fixing column one. A fixing column two is sleeved on the inside of the end of the slide rail spring away from the fixing column one. The fixing column one and the fixing column two are located in the same vertical plane and are parallel to each other axially. The fixing column two is fixed on the inner side wall of the storage slot away from the limiting column two. A funnel is fixed on the top of the fixing cylinder. The radius of the inner arc wall section of the top of the funnel is larger than the radius of the inner arc wall section of its bottom.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. The cylinder is forced to rise vertically by sliding along the sliding sleeve with a sliding rod, which greatly reduces the impact of tilting or shaking on the concrete flow during the lifting process. After the cylinder is lifted, the limiting post one is inserted into the limiting hole two at the bottom of the limiting plate to achieve secondary fixation between the cylinder and the base, which facilitates subsequent observation, inspection and cleaning. The structure is simple and the operation is convenient.

[0011] 2. The design achieves horizontal docking through the splicing blocks and splicing slots, and with the locking mechanism, it enables quick installation and disassembly, facilitating handling and assembly. It is suitable for mobile testing or testing operations in areas with limited space. Attached Figure Description

[0012] Figure 1 A schematic diagram of the overall structure of a rapid slump tester for self-compacting concrete. Figure 2 This is a schematic diagram of the structure of a self-compacting concrete slump rapid tester after the fixed cylinder is raised. Figure 3 This is a schematic diagram of the structure of a self-compacting concrete slump rapid tester after the splicing plate is disassembled. Figure 4 This is an exploded view of the locking mechanism in a rapid slump tester for self-compacting concrete.

[0013] In the picture: 10. Splicing panel; 101. Scale line; 102. Splicing block; 103. Splicing groove; 11. Fixing cylinder; 111. Funnel; 12. Fixing rod; 121. Limiting plate; 122. Limiting post one; 13. Sliding sleeve; 131. Sliding rod; 20. Limiting block one; 21. Limiting block two; 22. Limiting post two; 23. Fixing post one; 231. Fixed column two; 24. Slide rail spring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0015] Please see the appendix Figure 1 To be continued Figure 4 The present invention provides a rapid slump tester for self-compacting concrete, comprising two horizontally spliced ​​splicing plates 10, a fixed cylinder 11 vertically arranged at the center of the side where the tops of the two splicing plates 10 are close to each other, and a vertically arranged sliding sleeve 13 fixed at the corners where the tops of the two splicing plates 10 are far apart from each other. A sliding rod 131 slides vertically inside the sliding sleeve 13, and a horizontal fixed rod 12 is detachably connected to the top of the sliding rod 131. The fixed rod 12 is arranged towards the fixed cylinder 11 and fixed to the outer arc wall of the fixed cylinder 11. Each of the two fixed rods 12 is fixed with a vertically arranged limiting plate 121 on the same side away from the fixed cylinder 11. A limiting hole 1 is horizontally opened at the center of the top of the side wall of the sliding sleeve 13 near the limiting plate 121. A limiting hole 2 is horizontally opened through the top and bottom of the limiting plate 121. A limiting post 122 is inserted into the limiting hole 1. Both of the splicing plates 10 are provided with scale lines 101 on their tops. On one side wall of the splicing plate 10 near the other splicing plate 10, a plurality of splicing blocks 102 are fixedly arranged linearly and uniformly along its length direction. On one side wall of the other splicing plate 10, a splicing groove 103 is provided at the position corresponding to the splicing block 102. Locking mechanisms are provided at both ends of the side wall of the two splicing panels 10 that are close to each other along the length direction of the splicing panel 10. A rotating groove is provided at the center of both ends of the side wall of the two splicing panels 10 that are close to each other. The rotating groove extends along the length direction of the splicing panel 10 and penetrates the outer side wall of the splicing panel 10. The top of the fixed cylinder 11 is fixed with a funnel 111, and the radius of the inner arc wall section at the top of the funnel 111 is greater than the radius of the inner arc wall section at the bottom.

[0016] It should be noted that: when two splicing plates 10 are brought close together horizontally, the splicing block 102 of one splicing plate 10 is embedded into the splicing groove 103 of the other splicing plate 10 to achieve preliminary horizontal positioning. The top and bottom of the side walls of the two splicing plates 10 that are close to each other are provided with sealing strips to reduce the seepage of concrete from the gaps during monitoring. In one possible embodiment, the two splicing plates 10 are spliced ​​together to form a square plate structure. The scale line 101 includes a plurality of concentric circular scales and a horizontal scale arranged radially along the plurality of circular scales, which facilitates observation of the situation and reading of the concrete inside the fixed cylinder 11 after it is lifted. In one specific embodiment, the slide rod 131 has an "I" shaped cross section in the horizontal direction. A sliding channel for sliding rod 131 to slide is vertically opened at the top center of the sliding sleeve 13. The fixing rod 12 is connected to the slide rod 131 by fixing bolts. The slide rod 131 is inserted into the sliding sleeve 13. At this time, the fixing cylinder 11 is located at the top center of the two splicing plates 10. The sliding sleeve 13 provides a vertical guide reference for the subsequent cylinder lifting action. Self-compacting concrete is poured into the funnel 111 at the top of the fixed cylinder 11. When the concrete fills 2 / 3 of the volume of the fixed cylinder 11, the pouring is paused and the concrete is vibrated to compact it. During the pouring, the sliding rod 131 is completely located in the sliding channel. The limiting hole 2 at the top of the limiting plate 121 is coaxial with the limiting hole at the top of the sliding sleeve 13 and they are interconnected. At this time, the limiting post 122 is inserted into the limiting hole 1 and the limiting hole 2 to prevent the fixed cylinder 11 from shifting during the pouring process. After the grouting is completed, first pull out the limiting post 122, then quickly lift the fixing rod 12, which will drive the sliding rod 131 to rise vertically along the sliding sleeve 13. The sliding rod 131 and the sliding sleeve 13 cooperate to ensure vertical lifting. When the fixing cylinder 11 is completely separated from the concrete, the limiting hole 2 at the bottom of the limiting post 122 is aligned with the limiting hole 1. Pull the limiting post 122 out from the limiting hole 2 at the top of the limiting plate 121 and reinsert it into the limiting hole 2 at the bottom to achieve secondary locking of the fixing cylinder 11, which is convenient for subsequent observation and cleaning. At this time, the concrete expands in all directions under the action of gravity. The operator can directly read the expansion value through the scale line 101 on the top of the splicing plate 10 and record the time when the concrete stops flowing.

[0017] Please see the appendix Figure 1 To be continued Figure 4 The present invention provides a technical solution: a rotating groove 2 is provided at one end of the rotating groove 103 near the splicing groove 103 on the splicing plate 10. The rotating groove 2 is interconnected with the rotating groove 1, and the inner arc wall cross-sectional radius of the rotating groove 2 is greater than the inner arc wall cross-sectional radius of the rotating groove 1. The outer edge of the rotating groove 2 on the splicing plate 10 near the rotating groove 1 is provided with a fan-shaped rotating groove 3. The rotating groove 3 is connected to the rotating groove 2 but not directly connected to the rotating groove 1. When the two splicing plates 10 are spliced ​​together, the rotating groove 1 and rotating groove 2 on the two splicing plates 10 are spliced ​​together to form a complete cylindrical groove, and the rotating groove 3 is spliced ​​together to form a complete annular groove. The locking mechanism provided at the end of the side wall of the splicing plate 10 includes a limiting block 20 rotatably disposed in a first rotating groove, a limiting block 21 rotatably disposed in a second rotating groove, the limiting block 20 and the limiting block 21 being coaxially fixed, a limiting post 22 being fixed on the outer edge of the side wall of the limiting block 21 near the limiting block 20, the limiting post 22 being rotatably disposed in a third rotating groove, and a limiting groove being provided on the side wall of the limiting block 20 away from the limiting block 21. A storage slot is provided on the side of the rotating groove 2 away from the rotating groove 1 on the splicing plate 10. A fixing post 23 is fixed on the side wall of the limiting post 22 away from the limiting block 20. A slide rail spring 24 is sleeved on the outside of the fixing post 23. A fixing post 231 is sleeved on the inside of the end of the slide rail spring 24 away from the fixing post 23. The fixing post 23 and the fixing post 231 are located in the same vertical plane and are parallel to each other axially. The fixing post 231 is fixed on the inner side wall of the storage slot away from the limiting post 22.

[0018] It should be noted that: In one possible embodiment, after the two limiting blocks 20 are spliced ​​together, the limiting grooves at their ends are spliced ​​together to form a groove with a regular hexagonal cross section. Therefore, the limiting block 20 can be rotated by using an internal hexagon of the corresponding size. The slide rail spring 24 is "V" shaped, and its two ends are respectively sleeved on the outer arc wall of the fixing post 23 and the fixing post 231. The fixing post 23 and the fixing post 231 are not coaxial with the limiting block 21. When the second limiting block 21 rotates, the first fixing post 23 is driven. Since the second fixing post 231 is fixed to the inner wall of the storage slot, the distance between the first fixing post 23 and the second fixing post 231 is pulled closer, causing the slide rail spring 24 to be compressed and forming a reaction force. After the rotation continues, the distance between the first fixing post 23 and the second fixing post 231 will reach a minimum value and then gradually move away. That is, after passing this point, the slide rail spring 24 will release the elastic force. At this time, the second limiting block 21 has rotated a certain angle, and the same applies to the reverse rotation. Rotating the first limiting block 20 causes the second limiting block 21, which is fixed on the same axis, to rotate synchronously in the second rotating groove. The second limiting post 22 on the outer edge of the second limiting block 21 slides along the third rotating groove. When the first limiting block 20 rotates at a certain angle, the second limiting post 22 on one side of the second limiting block 21 has rotated into the third rotating groove on the splicing plate 10 on the other side, forming a horizontal lock. It is difficult for external force to directly drive the first limiting block 20 to rotate.

[0019] Working principle: Two splicing plates 10 are horizontally spliced ​​together. The splicing block 102 is embedded in the splicing groove 103 for positioning. The sealing strip reduces concrete leakage. The first limiting block 20 is rotated, which drives the coaxial second limiting block 21 to rotate in the second rotating groove. The second limiting post 22 slides along the third rotating groove to the third rotating groove of the other splicing plate 10. The slide rail spring 24 is compressed and then released to lock the splicing plate 10 into a whole. Concrete is poured into the fixed cylinder 11 through funnel 111 to two-thirds full. After compaction, the fixed cylinder 11 is fixed by inserting the limiting post 122 into the limiting hole 1 and the limiting hole 2 at the top of the limiting plate 121. The fixing rod 12 is lifted up, and the sliding rod 131 rises vertically along the sliding sleeve 13 to ensure that the fixed cylinder 11 is vertically detached from the concrete. Then, the limiting post 122 is inserted into the limiting hole 2 at the bottom of the limiting plate 121 for secondary locking. After the concrete expands, the expansion value is read through the scale line 101 and the flow time is recorded.

Claims

1. A rapid slump tester for self-compacting concrete, comprising two horizontally spliced ​​splice plates (10), wherein a fixed cylinder (11) is vertically disposed at the center of the side of the top of the two splice plates (10) that are close to each other, characterized in that: At the corners of the two splicing plates (10) that are far apart from each other, there are vertically arranged sliding sleeves (13). A sliding rod (131) slides vertically inside the sliding sleeve (13). A horizontal fixing rod (12) is detachably connected to the top of the sliding rod (131). The fixing rod (12) is set towards the fixing cylinder (11) and fixed to the outer arc wall of the fixing cylinder (11). Each of the two fixed rods (12) is fixed with a vertically arranged limiting plate (121) on the same side away from the fixed cylinder (11). A limiting hole 1 is horizontally opened at the center of the top of the side wall of the sliding sleeve (13) near the limiting plate (121). A limiting hole 2 is horizontally opened through the top and bottom of the limiting plate (121). A limiting post 1 (122) is inserted into the limiting hole 1.

2. The rapid slump tester for self-compacting concrete according to claim 1, characterized in that: Both of the splicing plates (10) have scale lines (101) on their tops. On one side wall of the splicing plate (10) near the other splicing plate (10), there are a plurality of splicing blocks (102) that are linearly and uniformly distributed along their length. On one side wall of the other splicing plate (10), there are splicing grooves (103) at the positions corresponding to the splicing blocks (102).

3. The rapid slump tester for self-compacting concrete as described in claim 1, characterized in that: Locking mechanisms are provided at both ends of the side wall of the two splicing plates (10) that are close to each other, along the length direction of the splicing plate (10). A rotating groove is provided at the center of both ends of the side wall of the two splicing plates (10) that are close to each other. The rotating groove extends along the length direction of the splicing plate (10) and penetrates the outer side wall of the splicing plate (10).

4. The rapid slump tester for self-compacting concrete as described in claim 3, characterized in that: Rotating groove 1, which is located on the splicing plate (10), has a rotating groove 2 at one end near the splicing groove (103). Rotating groove 2 is connected to rotating groove 1, and the inner arc wall cross-sectional radius of rotating groove 2 is greater than that of rotating groove 1.

5. The rapid slump tester for self-compacting concrete as described in claim 4, characterized in that: The rotating groove 2 on the splicing plate (10) has a fan-shaped rotating groove 3 at the outer edge of the end near the rotating groove 1. The rotating groove 3 is connected to the rotating groove 2 but not directly connected to the rotating groove 1. When the two splicing plates (10) are spliced ​​together, the rotating groove 1 and rotating groove 2 on the two splicing plates (10) are spliced ​​together to form a complete cylindrical groove, and the rotating groove 3 is spliced ​​together to form a complete annular groove.

6. The rapid slump tester for self-compacting concrete according to claim 3, wherein: The locking mechanism provided at the end of the side wall of the splicing plate (10) includes a limiting block 1 (20) rotatably disposed in a rotating groove 1, a limiting block 2 (21) rotatably disposed in a rotating groove 2, the limiting block 1 (20) and the limiting block 2 (21) being coaxially fixed, a limiting post 2 (22) being fixed on the outer edge of the side wall of the limiting block 2 (21) near the limiting block 1 (20), the limiting post 2 (22) rotating in a rotating groove 3, and a limiting groove being provided on the side wall of the limiting block 1 (20) away from the limiting block 2 (21).

7. The rapid slump tester for self-compacting concrete as described in claim 6, characterized in that: A storage slot is provided on the side of the rotating groove 2 away from the rotating groove 1 on the splicing plate (10). A fixing column 1 (23) is fixed on the side wall of the limiting column 2 (22) away from the limiting block 1 (20). A slide rail spring (24) is sleeved on the outside of the fixing column 1 (23). A fixing column 2 (231) is sleeved on the inside of the end of the slide rail spring (24) away from the fixing column 1 (23). The fixing column 1 (23) and the fixing column 2 (231) are located in the same vertical plane and are parallel to each other axially. The fixing column 2 (231) is fixed on the inner side wall of the storage slot away from the limiting column 2 (22).

8. The rapid slump tester for self-consolidating concrete of claim 1, wherein: The top of the fixed cylinder (11) is fixed with a funnel (111), and the radius of the inner arc wall section at the top of the funnel (111) is greater than the radius of the inner arc wall section at the bottom.

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