A cement setting time testing device
By using a worm gear transmission system to drive the clamping rod to move synchronously, the problem of mold shaking caused by the unfixed material box in the cement setting time testing equipment is solved, and a high-precision and stable testing process is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 内蒙古自治区市场监督管理审评查验中心(内蒙古自治区石油化工建设工程质量检查站)
- Filing Date
- 2025-07-16
- Publication Date
- 2026-05-26
AI Technical Summary
Existing cement setting time testing equipment lacks measures to secure the material box, causing the test mold to shake during the drop of the test needle, posing a safety hazard and resulting in low testing accuracy.
The worm gear transmission system drives the four clamping rods to move synchronously, ensuring that the material box is centered and fixed. The rotating shaft drives the turntable to rotate to clamp or release the clamps. The self-locking property of the worm gear ensures stability.
It improves detection accuracy, avoids mold deviation during trial runs, and is simple and quick to operate, allowing for simultaneous adjustment in four directions in a single operation.
Smart Images
Figure CN224286616U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing equipment technology, and in particular to a cement setting time testing device. Background Technology
[0002] In the field of construction engineering, concrete setting time is a key parameter affecting construction progress and quality. An excessively short initial setting time leads to difficulties in concrete transportation and pouring, while an excessively long final setting time prolongs the construction period and increases curing costs.
[0003] Traditional testing methods rely on manual operation of the Vicat apparatus. The concrete container is usually placed directly on the Vicat apparatus and calibrated visually. There are no measures to secure the container, and the test needle may deviate due to the shaking of the test mold during the descent, posing a safety hazard. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the lack of measures to secure the material box and the potential for the test needle to deviate due to mold shaking during its descent, which poses a safety hazard. Therefore, this invention proposes a cement setting time testing device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A cement setting time testing device includes a base for placing a material box, a connecting rod fixed to the top of the base, and a measuring element for testing fixed to the top of the connecting rod. The measuring element includes a sliding frame, a scale plate, a pointer, a sliding rod, and a test needle.
[0007] The top of the base has four sliding grooves, and each of the four sliding grooves has a clamping rod for centering the material box. The base has a set of clamping components, which are used to drive the four clamping rods to clamp or release the clamping.
[0008] To facilitate the driving of the clamping components, a set of driving components is also provided in the base, which is used to self-lock after driving the clamping components.
[0009] In one possible design, the clamping assembly includes a third groove formed in the base and connected to four sliding grooves. A rotating shaft is rotatably disposed in the third groove. A turntable is fixed on the surface of the rotating shaft. Four limiting grooves are formed in the turntable. The four clamping rods slide in the four limiting grooves respectively.
[0010] The mechanism involves rotating a shaft to drive a turntable, which in turn drives four clamping rods to move relative to each other within four sliding grooves. This movement of the four sliding grooves allows them to move synchronously towards or away from each other, thus clamping or releasing the material box.
[0011] In one possible design, the clamping assembly further includes four first grooves formed in the base, the four first grooves being connected to four sliding grooves respectively, each of the four first grooves having a slider sliding in it, and the four clamping rods being fixed to the top of the four sliders respectively.
[0012] In one possible design, the drive assembly includes a second groove formed in the base, the rotating shaft moving downward through the second groove, a worm gear fixed on the surface of the rotating shaft, a worm meshing with the worm gear rotating in the second groove, and the side end of the worm moving outward through the side end of the base.
[0013] The rotating worm can drive the worm wheel to rotate, and the worm wheel drives the turntable to rotate through the rotating shaft, which can realize the driving clamping opening and closing. At the same time, the worm and worm wheel have self-locking properties, and the worm wheel cannot drive the worm to rotate in the opposite direction, so it can remain stable after opening and closing.
[0014] In one possible design, a handle is fixed to the side end of the worm gear.
[0015] In one possible design, the surfaces of all four clamping rods are fitted with anti-slip pads.
[0016] In one possible design, support legs are fixed at the four corners of the bottom of the base.
[0017] In this application, by driving the rotating shaft to rotate, the turntable is driven to rotate. The rotation of the turntable drives the four clamping rods to move in relative positions within the four slides, thereby driving the four slides to move synchronously in the direction of approaching or moving away from each other, clamping or releasing the material box.
[0018] Rotating the worm gear can drive the worm wheel to rotate, and the worm wheel drives the turntable to rotate through the shaft, which can realize the driving clamping opening and closing. At the same time, the worm gear and worm wheel have self-locking properties, and the worm wheel cannot drive the worm gear to rotate in the opposite direction, so it can remain stable after opening and closing.
[0019] Beneficial effects: In this utility model, the cement setting time testing device drives four clamping rods to move synchronously through worm gear transmission, ensuring that the material box is centered and fixed, avoiding mold displacement during the testing process, and improving testing accuracy;
[0020] In this invention, the cement setting time testing device can be clamped and released by rotating the handle, and a single operation can complete synchronous adjustment in four directions, which is convenient and quick. Attached Figure Description
[0021] Figure 1 This is a front perspective view of a cement setting time testing device proposed in this utility model;
[0022] Figure 2 This is a first partial cross-sectional view of a cement setting time testing device proposed in this utility model;
[0023] Figure 3 This is a second partial cross-sectional view of a cement setting time testing device proposed in this utility model;
[0024] Figure 4 This is a third partial cross-sectional view of a cement setting time testing device proposed in this utility model.
[0025] In the diagram: 1. Base; 2. Support leg; 3. Measuring component; 4. Connecting rod; 5. Clamping rod; 6. Tightening handle; 7. Slide groove; 8. First groove; 9. Slider; 10. Second groove; 11. Rotating shaft; 12. Worm gear; 13. Worm; 14. Third groove; 15. Turntable; 16. Limiting groove. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0027] In one embodiment: Refer to Figures 1-4 A cement setting time testing device, applicable in the field of testing equipment technology, includes a base 1 for placing a material box. A connecting rod 4 is fixed to the top of the base 1, perpendicular to the base 1. A measuring element 3 is fixed to the top of the connecting rod 4. The measuring element 3 includes a sliding frame, a scale plate, a pointer, a sliding rod, and a test needle. The sliding frame is fixedly connected to the connecting rod 4, the scale plate is fixed on the sliding frame, the pointer is slidably mounted on the scale plate, the sliding rod is connected to the pointer and can drive the pointer to move, and the test needle is fixed to the lower end of the sliding rod for inserting into the concrete to test the setting time.
[0028] Four grooves 7 are formed at the top of the base 1, and the four grooves 7 are evenly distributed on the circumference with the center of the base 1 as the center. A clamping rod 5 is slidably installed in each groove 7, and the clamping rod 5 is used to center and position the material box.
[0029] A clamping assembly is installed inside the base 1. The clamping assembly includes a third groove 14 that communicates with four sliding grooves 7 within the base 1. A rotating shaft 11 is rotatably mounted within the third groove 14, and the rotating shaft 11 is perpendicular to the surface of the base 1. A turntable 15 is fixed to the surface of the rotating shaft 11. Four limiting grooves 16 are radially distributed within the turntable 15, and four clamping rods 5 are slidably disposed within the four limiting grooves 16 respectively. When the rotating shaft 11 is rotated, the turntable 15 rotates accordingly. The rotation of the turntable 15 drives the four clamping rods 5 to move relative to each other within the four sliding grooves 7, thereby enabling the four sliding grooves 7 to move synchronously towards or away from each other, clamping or releasing the material box.
[0030] To ensure the stability of the sliding of the clamping rod 5, four first grooves 8 are opened in the base 1. The four first grooves 8 are respectively connected to four sliding grooves 7. A slider 9 is slidably installed in each first groove 8. The four clamping rods 5 are respectively fixed to the top of the four sliders 9, so that the clamping rod 5 slides more smoothly in the sliding groove 7.
[0031] In another embodiment: Refer to Figures 1-4 An improvement upon Embodiment 1 is made as follows: a driving assembly is further provided within the base 1. This driving assembly includes a second groove 10 formed within the base 1, with a rotating shaft 11 extending downwards into the second groove 10. A worm gear 12 is fixed to the surface of the rotating shaft 11. A worm 13, meshing with the worm gear 12, is rotatably disposed within the second groove 10. The side end of the worm 13 extends outwards through the side end of the base 1. Rotating the worm 13 drives the worm gear 12 to rotate, which in turn drives the turntable 15 to rotate via the rotating shaft 11, thus achieving the driving clamping opening and closing. Simultaneously, due to the self-locking nature of the worm 13 and worm gear 12, the worm gear 12 cannot drive the worm 13 to rotate in the reverse direction, maintaining stability after opening and closing.
[0032] A handle 6 is fixed to the side end of the worm gear 13 to facilitate the operator to rotate the worm gear 13.
[0033] All four clamping rods 5 are covered with anti-slip pads, which can be made of rubber, to increase the friction between the clamping rods 5 and the material box and prevent the material box from sliding during the testing process.
[0034] Support legs 2 are fixed at the four corners of the bottom of the base 1. The support legs 2 are used to support the entire device and make the device more stable.
[0035] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.
[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A cement setting time testing device, used to detect the setting time of concrete, characterized in that, include: A base (1) for placing a material box, a connecting rod (4) is fixed to the top of the base (1), and a measuring component (3) for testing is fixed to the top of the connecting rod (4). The measuring component (3) includes a sliding frame, a scale plate, a pointer, a sliding rod, and a test needle. The top of the base (1) is provided with four sliding grooves (7), and each of the four sliding grooves (7) is slidably provided with a clamping rod (5) for centering the material box. The base (1) is provided with a set of clamping components, which are used to drive the four clamping rods (5) to clamp or release the clamping. To facilitate the driving of the clamping components, a set of driving components is also provided in the base (1), which are used to self-lock after driving the clamping components.
2. The cement setting time detection device according to claim 1, characterized in that, The clamping assembly includes a third groove (14) that is opened in the base (1) and connected to four sliding grooves (7). A rotating shaft (11) is rotatably installed in the third groove (14). A turntable (15) is fixed on the surface of the rotating shaft (11). Four limiting grooves (16) are opened in the turntable (15). The four clamping rods (5) slide in the four limiting grooves (16) respectively. In this process, by driving the rotating shaft (11) to rotate, the turntable (15) is driven to rotate. The rotation of the turntable (15) drives the four clamping rods (5) to move relative to each other in the four slides (7), thereby driving the four slides (7) to move synchronously in the direction of approaching or moving away from each other, thus clamping or releasing the material box.
3. A cement setting time detection device according to claim 2, characterised in that, The clamping assembly also includes four first grooves (8) formed in the base (1), the four first grooves (8) are respectively connected to four sliding grooves (7), and sliders (9) slide in each of the four first grooves (8), and the four clamping rods (5) are respectively fixed to the top of the four sliders (9).
4. The cement setting time detection device according to claim 2, wherein The drive assembly includes a second groove (10) formed in the base (1), the rotating shaft (11) moves downward through the second groove (10), a worm gear (12) is fixed on the surface of the rotating shaft (11), a worm (13) meshes with the worm gear (12) rotating in the second groove (10), and the side end of the worm (13) moves outward through the side end of the base (1); Among them, rotating the worm (13) can drive the worm wheel (12) to rotate, and the worm wheel (12) drives the turntable (15) to rotate through the rotating shaft (11), which can realize the drive clamping opening and closing. At the same time, the worm (13) and the worm wheel (12) have self-locking properties, and the worm wheel (12) cannot drive the worm (13) to rotate in the opposite direction, so it can remain stable after opening and closing.
5. The cement setting time testing device according to claim 4, characterized in that, A handle (6) is fixed to the side end of the worm (13).
6. A cement setting time testing device according to any one of claims 1-4, characterized in that, The surfaces of the four clamping rods (5) are all covered with anti-slip pads.
7. The cement setting time testing device according to claim 1, characterized in that, Support legs (2) are fixed at the four corners of the bottom of the base (1).