A device for detecting cement cohesiveness
By combining a drive rod, a cam, and a sliding plate, the problem of cumbersome rod fixing in cement cohesiveness testing devices is solved, enabling quick locking and unlocking, and improving ease of operation and practicality.
Patent Information
- Application Number
- CN202521582557.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-28
AI Technical Summary
Existing cement cohesiveness testing devices are cumbersome to operate when fixing the test rod, the screw is easily damaged, and the maintenance cost is high, affecting convenience and practicality.
The test rod adopts a combination structure of drive rod, cam, sliding plate and locking block. It can be quickly locked and unlocked by knob operation. Combined with the design of return spring and bidirectional threaded rod, the operation steps are simplified and the cleaning efficiency is improved.
It enables quick locking and unlocking of the test rod, reduces operating steps, avoids component damage, lowers maintenance costs, and improves the convenience and practicality of the device.
Smart Images
Figure CN224682031U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cement testing, and more specifically, to a cement cohesiveness testing device. Background Technology
[0002] The Vicat apparatus, also known as a cement consistency meter or cement consistency and setting time tester, is a testing instrument used in the cement and concrete industry. It is commonly used to test the cohesiveness of cement.
[0003] Some existing Vicat apparatuses, when testing the cohesiveness of cement, first add the sample to be tested into a mold, then use a screw probe to vertically and freely sink it into the cement paste. The depth of insertion is then determined by inserting the probe and probe into the cement to assess the cohesiveness. However, existing testing devices typically use a screw to lock the probe, requiring frequent screw rotation by the operator. Furthermore, the probe may undergo slight deformation due to stress over long-term use, and the rigid locking mechanism of the screw can exacerbate stress concentration, leading to component damage or positioning failure. Additionally, the screw wears down over time, requiring replacement of the screw or related components; otherwise, locking the probe cannot be guaranteed, increasing maintenance costs. If the screw is rusted or contaminated with cement paste, locking may become difficult or impossible. In practical use, this method is inconvenient, failing to achieve rapid locking and unlocking of the probe, and thus has poor practicality.
[0004] Therefore, we have made improvements to this and proposed a cement cohesiveness testing device. Utility Model Content
[0005] The purpose of this invention is to solve the problem of poor convenience in some existing cement cohesiveness testing devices.
[0006] To achieve the aforementioned objectives and address the aforementioned problems, this utility model provides a cement cohesiveness testing device, comprising a base, a mounting frame fixedly connected to the upper surface of the base, an observation plate fixedly connected to the lower surface of the mounting frame's cross plate, a through groove inside the observation plate, a test rod disposed inside the through groove, the upper end of the test rod slidably penetrating through the upper surface of the mounting frame and the lower surface of the observation plate, a test needle disposed at the lower end of the test rod, a test mold disposed on the upper surface of the base, a cavity inside the mounting frame extending into the interior of the observation plate, two sliding plates slidably connected inside the cavity, locking blocks fixedly connected to the adjacent surfaces of the two sliding plates, both locking blocks slidably penetrating through the through groove, and an unlocking assembly disposed inside the cavity; the unlocking assembly includes a drive rod rotatably connected inside the cavity, a cam fixedly sleeved on the outside of the drive rod, torsion springs fixedly connected to both sides of the cam, and the ends of the two torsion springs away from the cam being fixedly connected to the inner walls of both sides of the cavity.
[0007] As a preferred technical solution of this application, the front end of the drive rod rotatably extends through the front surface of the mounting bracket, and a first knob is fixedly connected to the front end of the drive rod.
[0008] As a preferred technical solution of this application, a limiting rod is fixedly connected inside the cavity, and the sliding plate is slidably sleeved on the outside of the limiting rod. A return spring is fixedly connected between the opposite side surfaces of the two sliding plates and the inner walls of both sides of the cavity, and the return spring is movably sleeved on the outside of the limiting rod.
[0009] As a preferred technical solution of this application, an L-shaped connecting plate is fixedly connected to the upper end of each of the two sliding plates, and the vertical plates of the two L-shaped connecting plates are in contact with the cam.
[0010] As a preferred technical solution of this application, an indicator plate is slidably connected inside the through groove. The indicator plate is fixedly sleeved on the outside of the test rod. Locking grooves are opened on both sides of the indicator plate, and the locking grooves are adapted to the locking blocks.
[0011] As a preferred technical solution of this application, it also includes a fixing block, which is fixedly connected to the rear surface of the observation plate. A guide groove is provided on the lower surface of the fixing block, and an adjustment component is provided inside the guide groove. Two cleaning components are provided on the outside of the test rod.
[0012] As a preferred technical solution of this application, the adjustment component includes a bidirectional threaded rod, which is rotatably connected inside the guide groove. Both ends of the bidirectional threaded rod are threaded with mounting plates, which are slidably connected inside the guide groove. The mounting plates and the cleaning component are threaded with mounting screws. The right end of the bidirectional threaded rod rotatably passes through the right side surface of the fixing block, and a second knob is fixedly connected to the right end of the bidirectional threaded rod.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] In the scheme of this application:
[0015] 1. Through the cooperation between the drive rod, cam, L-shaped connecting plate, sliding plate, locking block and other structures, the screw does not need to be rotated frequently during the testing process. The locking of the test rod can be canceled simply by rotating the first knob 90 degrees, which greatly reduces the number of operation steps for the operator and effectively avoids damage to the test rod. In addition, the cooperation between the reset springs also facilitates the automatic locking of the indicator plate and the test rod, so that no additional operation is required when fixing the test rod, further reducing the operation steps and improving the convenience and practicality of the device. The operation is simple.
[0016] 2. The cooperation between the bidirectional threaded rod, mounting plate, and cleaning components facilitates the initial cleaning of cement on the surface of the test rod during the resetting process, effectively preventing cement from dripping onto the base and improving the cleaning efficiency of subsequent personnel, thus enhancing the practicality of the device. Attached Figure Description
[0017] Figure 1 A schematic diagram of the cement cohesiveness testing device provided in this application;
[0018] Figure 2 This is a first schematic cross-sectional view of the mounting frame in the cement cohesiveness testing device provided in this application;
[0019] Figure 3 This is a second schematic cross-sectional view of the mounting frame in the cement cohesiveness testing device provided in this application;
[0020] Figure 4 A cross-sectional view of the fixing block in the cement cohesiveness testing device provided in this application;
[0021] Figure 5 This is a schematic diagram of the mounting plate in the cement cohesiveness testing device provided in this application;
[0022] Figure 6 Provided for this application Figure 3Enlarged view of point A in the middle;
[0023] Figure 7 Provided for this application Figure 2 Enlarged view of point B in the middle.
[0024] The image shows:
[0025] 1. Base; 2. Mounting bracket; 3. Observation plate; 4. Through groove; 5. Test rod; 6. Test needle; 7. Test mold; 8. Cavity; 9. Sliding plate; 10. Locking block; 11. Drive rod; 12. Cam; 13. Torsion spring; 14. Limiting rod; 15. Return spring; 16. L-shaped connecting plate; 17. First knob; 18. Indicator plate; 19. Locking groove; 20. Cleaning component; 21. Fixing block; 22. Guide groove; 23. Bidirectional threaded rod; 24. Mounting plate; 25. Second knob; 26. Mounting screw. Detailed Implementation
[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0027] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0028] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0030] Example 1
[0031] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7A cement cohesiveness testing device includes a base 1, a mounting frame 2 fixedly connected to the upper surface of the base 1, an observation plate 3 fixedly connected to the lower surface of the horizontal plate of the mounting frame 2, a scale mark on the surface of the observation plate 3, a through groove 4 inside the observation plate 3, a test rod 5 inside the through groove 4, the upper end of the test rod 5 slidably penetrating the upper surface of the mounting frame 2 and the lower surface of the observation plate 3 respectively, a test needle 6 at the lower end of the test rod 5, a test mold 7 on the upper surface of the base 1, a cavity 8 inside the mounting frame 2 extending into the interior of the observation plate 3, two sliding plates 9 slidably connected inside the cavity 8, a locking block 10 fixedly connected to the adjacent side surface of the two sliding plates 9, both locking blocks 10 slidably penetrating the interior of the through groove 4, and an unlocking component inside the cavity 8.
[0032] Among them, test rod 5, test needle 6 and test mold 7 are all existing technologies in this field, so they will not be described in detail in this article.
[0033] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the unlocking assembly includes a drive rod 11, which is rotatably connected inside the cavity 8. A cam 12 is fixedly sleeved on the outside of the drive rod 11. Torsion springs 13 are fixedly connected to both sides of the cam 12. The ends of the two torsion springs 13 away from the cam 12 are fixedly connected to the inner walls of both sides of the cavity 8. The torsion springs 13 deform when the cam 12 rotates, so that when the drive rod 11 is no longer subjected to external force, it can use its own elasticity to drive the cam 12 to reset.
[0034] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the front end of the drive rod 11 rotatably extends through the front surface of the mounting bracket 2. The front end of the drive rod 11 is fixedly connected to a first knob 17, and the surface of the first knob 17 is provided with an anti-slip groove, so that the operator can hold the first knob 17 to facilitate the subsequent rotation of the drive rod 11.
[0035] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, a limiting rod 14 is fixedly connected inside the cavity 8, and a sliding plate 9 is slidably sleeved on the outside of the limiting rod 14. A return spring 15 is fixedly connected between the opposite side surface of the two sliding plates 9 and the inner walls of both sides of the cavity 8. The return spring 15 is movably sleeved on the outside of the limiting rod 14. During the movement of the sliding plate 9, the return spring 15 will deform so that the sliding plate 9 can be reset later.
[0036] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, L-shaped connecting plates 16 are fixedly connected to the upper ends of the two sliding plates 9. The vertical plates of the two L-shaped connecting plates 16 are in contact with the cam 12. When the cam 12 rotates, it will force the L-shaped connecting plates 16 on both sides to move. The movement of the L-shaped connecting plates 16 can drive the sliding plates 9 to move, thereby driving the locking block 10 to move.
[0037] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, an indicator plate 18 is slidably connected inside the through groove 4. The indicator plate 18 is fixedly sleeved on the outside of the test rod 5. A pointer is provided on the outer surface of the indicator plate 18. Locking grooves 19 are provided on both sides of the indicator plate 18. The locking grooves 19 and the locking blocks 10 are compatible.
[0038] Example 2
[0039] The cement cohesiveness testing device provided in Example 1 has been further optimized, specifically, as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, it also includes a fixing block 21, which is fixedly connected to the rear surface of the observation plate 3. A guide groove 22 is provided on the lower surface of the fixing block 21. An adjustment component is provided inside the guide groove 22. Two cleaning parts 20 are provided on the outside of the test rod 5.
[0040] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the adjustment assembly includes a bidirectional threaded rod 23, which is rotatably connected inside the guide groove 22. Mounting plates 24 are threaded onto the opposite threads at both ends of the bidirectional threaded rod 23. The mounting plates 24 are slidably connected inside the guide groove 22. Mounting screws 26 are threaded onto the interior of the mounting plates 24 and the cleaning component 20. The right end of the bidirectional threaded rod 23 rotatably passes through the right side surface of the fixing block 21. A second knob 25 is fixedly connected to the right end of the bidirectional threaded rod 23.
[0041] The cement cohesiveness testing device provided by this utility model is used as follows:
[0042] First, the staff puts the cement sample to be tested into the mold 7. When cohesiveness testing is required, the staff holds the first knob 17 and rotates it. The first knob 17 will drive the drive rod 11 to rotate, and the torsion spring 13 will deform. The rotation of the drive rod 11 will drive the cam 12 to rotate. The rotation of the cam 12 will force the L-shaped connecting plates 16 on both sides to move. The movement of the L-shaped connecting plates 16 will drive the sliding plate 9 to move, thereby driving the locking block 10 to move until the locking block 10 is disengaged from the locking groove 19. At this time, the indicator plate 18 will no longer be locked, and the test rod 5 and the test needle 6 will fall vertically, thus realizing the subsequent testing of cement cohesiveness.
[0043] When the test rod 5 and test needle 6 need to be reset after the test is completed, the second knob 25 is used to rotate the bidirectional threaded rod 23. The rotation of the bidirectional threaded rod 23 will drive the mounting plate 24 to move. The movement of the mounting plate 24 will drive the cleaning part 20 to move until the cleaning part 20 contacts the outer wall of the test rod 5. Then, the staff will use the indicator plate 18 to move the test rod 5 and test needle 6 upward. During the movement of the test rod 5, the cleaning part 20 can scrape off the cement on its surface, thereby achieving the initial cleaning of the test rod 5 and effectively preventing the cement on the surface of the test rod 5 from dripping onto the upper side of the base 1.
[0044] Additionally, when the indicator plate 18 moves upward and is about to reach the top, the indicator plate 18 will contact the inclined surface of the locking block 10. At this time, the indicator plate 18 will force the locking block 10 to move to both sides. Under the action of the sliding plate 9, the return spring 15 will also deform until the locking block 10 is located outside the locking groove 19. Subsequently, with the help of the elastic force of the return spring 15, the locking block 10 can be automatically locked into the interior of the locking groove 19, thereby locking the height of the test rod 5.
[0045] When subsequent maintenance of the cleaning component 20 is required, it can be disassembled using the mounting screw 26.
[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0047] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.
Claims
1. A cement cohesiveness testing device, characterized in that, The device includes a base (1), a mounting bracket (2) fixedly connected to the upper surface of the base (1), an observation plate (3) fixedly connected to the lower surface of the horizontal plate of the mounting bracket (2), a through groove (4) opened inside the observation plate (3), a test rod (5) is provided inside the through groove (4), the upper end of the test rod (5) slidably passes through the upper surface of the mounting bracket (2) and the lower surface of the observation plate (3), a test needle (6) is provided at the lower end of the test rod (5), a test mold (7) is provided on the upper surface of the base (1), a cavity (8) is opened inside the mounting bracket (2), the cavity (8) extends into the interior of the observation plate (3), two sliding plates (9) are slidably connected inside the cavity (8), a locking block (10) is fixedly connected to the adjacent side surface of the two sliding plates (9), both locking blocks (10) can slidably pass through the interior of the through groove (4), and an unlocking component is also provided inside the cavity (8). The unlocking assembly includes a drive rod (11), which is rotatably connected inside the cavity (8). A cam (12) is fixedly sleeved on the outside of the drive rod (11). Torsion springs (13) are fixedly connected to both sides of the cam (12). The ends of the two torsion springs (13) away from the cam (12) are fixedly connected to the inner walls of both sides of the cavity (8).
2. The cement cohesiveness testing device according to claim 1, characterized in that, The front end of the drive rod (11) is rotatably extended through the front surface of the mounting bracket (2), and the front end of the drive rod (11) is fixedly connected to a first knob (17).
3. The cement cohesiveness testing device according to claim 2, characterized in that, The cavity (8) is fixedly connected to a limiting rod (14), and the sliding plate (9) is slidably sleeved on the outside of the limiting rod (14). A return spring (15) is fixedly connected between the opposite side surface of the two sliding plates (9) and the inner walls of both sides of the cavity (8). The return spring (15) is movably sleeved on the outside of the limiting rod (14).
4. The cement cohesiveness testing device according to claim 3, characterized in that, Both sliding plates (9) are fixedly connected to L-shaped connecting plates (16) at their upper ends, and the vertical plates of both L-shaped connecting plates (16) are in contact with the cam (12).
5. The cement cohesiveness testing device according to claim 4, characterized in that, An indicator plate (18) is slidably connected inside the through groove (4). The indicator plate (18) is fixedly sleeved on the outside of the test rod (5). Locking grooves (19) are provided on both sides of the indicator plate (18). The locking grooves (19) and the locking blocks (10) are compatible.
6. The cement cohesiveness testing device according to claim 5, characterized in that, It also includes a fixing block (21), which is fixedly connected to the rear surface of the observation plate (3). A guide groove (22) is provided on the lower surface of the fixing block (21). An adjustment component is provided inside the guide groove (22). Two cleaning parts (20) are provided on the outside of the test rod (5).
7. The cement cohesiveness testing device according to claim 6, characterized in that, The adjustment assembly includes a bidirectional threaded rod (23), which is rotatably connected inside the guide groove (22). At both ends of the bidirectional threaded rod (23), opposite threads are threaded with mounting plates (24). The mounting plates (24) are slidably connected inside the guide groove (22). The mounting plates (24) and the cleaning component (20) are threaded with mounting screws (26). The right end of the bidirectional threaded rod (23) rotatably passes through the right side surface of the fixing block (21). The right end of the bidirectional threaded rod (23) is fixedly connected with a second knob (25).