Penetration resistance meter for measuring setting time of concrete mixture
By introducing a sliding plate, a sprocket and a worm rack structure into the concrete penetration resistance meter, the fatigue problem of workers caused by repeatedly moving the material mold in the existing technology is solved, and the efficiency of measuring the setting time of the concrete mixture is improved.
Patent Information
- Application Number
- CN202422487693.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-15
AI Technical Summary
When measuring the setting time of concrete mixtures using existing concrete penetration resistance meters, workers need to move the material mold multiple times, resulting in low efficiency and fatigue caused by repeated handling and measurement.
A structure including a sliding plate, a driving sprocket, a driven sprocket and a sprocket ring was designed to enable the mold barrel to rotate on the sliding plate. Combined with the meshing of the worm and the rack, the stability during measurement is increased, and the stable insertion of the pressure sensor and the penetration needle reduces the need for repeated movement of the mold barrel.
By optimizing the structural design, worker fatigue is reduced, the efficiency of measuring the setting time of concrete mixtures is improved, and the workload caused by repeatedly moving the mold barrel is reduced.
Smart Images
Figure CN223400770U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of concrete testing equipment, and in particular to a penetration resistance meter for measuring the setting time of concrete mixtures. Background Art
[0002] Concrete mixture is concrete with specific materials added to it to improve the performance of concrete and its special uses, such as enhancing its compression resistance, crack resistance, waterproofness, heat insulation, sound absorption, and fire resistance. The concrete penetration resistance meter is an instrument used to measure the setting time of concrete mixtures. It uses the penetration resistance method to measure the setting time of concrete.
[0003] Existing concrete penetration resistance meters usually use a penetration needle as a testing device. The penetration needle is vertically penetrated into the concrete in the material mold through a pressing device, and the penetration resistance encountered by the penetration needle is measured and read. As the concrete sets, the penetration resistance increases accordingly. The corresponding penetration resistance is measured by multiple penetrations at different measuring points to obtain the concrete setting time data.
[0004] The above-mentioned prior art solutions have the following defects: when measuring the setting time of concrete mixture, workers have to move the position of the material mold multiple times based on experience. The repeated handling and measuring work can easily make the workers tired, resulting in reduced measurement efficiency. Utility Model Content
[0005] In order to facilitate workers in measuring the setting time of concrete mixtures and improve the efficiency of measurement work, this application provides a penetration resistance meter for measuring the setting time of concrete mixtures.
[0006] The above technical objectives of this application are achieved through the following technical solutions:
[0007] A penetration resistance meter for measuring the setting time of concrete mixtures comprises a base, a pressure sensor is installed in the base, a measuring assembly is provided on the base, a movable opening is opened on the base, a sliding plate is slidably provided in the movable opening, a mold barrel is rotatably connected to the sliding plate, a sprocket ring is provided on the peripheral wall of the mold barrel, a driving sprocket and a driven sprocket are rotatably provided in the base, a handwheel is fixedly connected to the driving sprocket, the handwheel is located on the base, a chain is wound around the driving sprocket and the driven sprocket, and one side of the chain is engaged with the sprocket ring.
[0008] By adopting the above technical solution, the mold barrel can be rotated on the sliding plate, and the bottom of the penetration needle can be moved away from the measuring point that has been measured, so that the penetration resistance measurement can be carried out again. By moving the sliding plate and turning the hand wheel multiple times, it is convenient for the staff to carry out multiple concrete mixture setting time measurements, reducing the staff fatigue caused by repeated movement of the mold barrel.
[0009] Optionally, the measuring assembly includes a column fixedly connected to the base, a measuring device electrically connected to the pressure sensor is installed on the column, a support arm is fixedly connected to the column, a support rod is provided on the support arm, a positioning sleeve is provided at one end of the support arm, a pressure rod is rotatably connected to the support rod, a first strip hole is opened at one end of the pressure rod, a first sliding shaft is slidingly set in the first strip hole, a connecting groove is opened on the column, the first sliding shaft is slidably connected to the connecting groove, a handle is provided at the other end of the pressure rod, a penetration column is inserted in the positioning sleeve, a fork is provided on the penetration column, a second sliding shaft is passed through the top of the fork, a second strip hole is opened on the pressure rod, the second sliding shaft passes through and slides in the second strip hole, and a penetration needle is threadedly connected to the bottom of the penetration column.
[0010] By adopting the above technical solution, it is ensured that the penetration column can move vertically downward smoothly. The handle is continuously pressed until the penetration needle is inserted into the concrete mixture. The current penetration resistance is read by the measuring equipment, which facilitates the staff to conduct multiple concrete mixture setting time measurements.
[0011] Optionally, the base is rotatably provided with a worm, one end of the worm is fixedly connected to a rocking wheel, the sliding plate is fixedly connected to a rack, and the rack is engaged with the worm.
[0012] By adopting the above technical solution, it is convenient for workers to move the mold barrel. At the same time, the worm gear and the rack are engaged to form a self-locking function, which increases the stability of the sliding plate in the movable opening during measurement, makes it convenient for workers to conduct multiple concrete mixture setting time measurements, and reduces worker fatigue caused by repeated movement of the mold barrel.
[0013] Optionally, a sliding groove is provided on the base, the driven sprocket slides in the sliding groove, and a moving rod is fixed to the top of the driven sprocket.
[0014] By adopting the above technical solution, it is convenient for workers to take and place the mold bucket, and it is convenient for workers to carry out multiple measurements of the setting time of concrete mixtures.
[0015] Optionally, a rotating column is provided on the support rod, and a slot matching the rotating column is formed on the pressure rod, and at least two slots are provided.
[0016] By adopting the above technical solution, the distance between the handle and the rotating column can be adjusted, which makes it easier for workers to adjust the downward pressure required for measurement according to the degree of concrete setting, and makes it easier for workers to perform multiple concrete mixture setting time measurements.
[0017] Optionally, a guide groove is provided in the movable opening, and a guide block matching the guide groove is integrally formed at the bottom of the sliding plate.
[0018] By adopting the above technical solution, the guide block can move along the guide groove, ensuring the smooth movement of the sliding plate in the movable opening, and at the same time ensuring the stability of the sliding plate when the mold barrel rotates on the sliding plate.
[0019] Optionally, a sliding sleeve is provided on the peripheral wall of the second sliding shaft.
[0020] By adopting the above technical solution, the friction force when the second sliding shaft slides in the second strip hole can be reduced, which makes it easier for workers to press the pressure rod and perform multiple measurements of the setting time of the concrete mixture.
[0021] Optionally, an adjustment sleeve is provided on the peripheral wall of the penetration column, and one end of the adjustment sleeve is sleeved on the peripheral wall of the penetration needle.
[0022] By adopting the above technical solution, the stability of the connection between the penetration column and the penetration needle can be increased, ensuring that the penetration needle can be vertically inserted into the concrete mixture to be measured during measurement.
[0023] Optionally, a retaining ring is formed on the adjusting sleeve.
[0024] By adopting the above technical solution, the retaining ring can abut against the top of the positioning sleeve, thereby limiting the pressing depth of the penetration column during the downward pressing process of the penetration column and preventing the penetration needle from being inserted too deeply into the concrete mixture.
[0025] In summary, this application has the following technical effects:
[0026] 1. The sliding plate, driving sprocket, driven sprocket and sprocket ring are provided to enable the mold barrel to rotate on the sliding plate, making it easier for workers to measure the setting time of concrete mixtures multiple times and reducing worker fatigue caused by repeated movement of the mold barrel;
[0027] 2. The worm and rack are provided to facilitate the movement of the mold barrel by the staff. At the same time, the worm gear and the rack are engaged to form a self-locking mechanism, which increases the stability of the sliding plate in the movable opening during measurement. This facilitates the staff to conduct multiple measurements of the setting time of concrete mixtures and reduces the staff fatigue caused by repeated movement of the mold barrel.
[0028] 3. By providing the adjustment sleeve, the friction force when the second sliding shaft slides in the second strip hole can be reduced, making it easier for workers to press the pressure rod and conduct multiple measurements of the setting time of the concrete mixture. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is the appearance structure diagram of this application;
[0030] Figure 2 It is a cross-sectional structural diagram of this application;
[0031] Figure 3 It is a cross-sectional structural diagram of the measurement component of this application.
[0032] Explanation of the accompanying drawings: 1. Base; 11. Pressure sensor; 12. Measuring device; 13. Driving sprocket; 131. Handwheel; 14. Driven sprocket; 15. Chain; 16. Sliding groove; 2. Movable opening; 21. Guide groove; 3. Sliding plate; 31. Rack; 32. Guide block; 4. Mold barrel; 41. Sprocket ring; 5. Column; 51. Connecting groove; 52. First sliding shaft; 6. Support arm; 61. Positioning sleeve; 7. Support rod; 71. Rotating column; 8. Press rod; 81. First strip hole; 82. Second strip hole; 83. Handle; 84. Slot; 9. Penetration column; 91. Fork; 92. Second sliding shaft; 921. Sliding sleeve; 93. Penetration needle; 94. Adjusting sleeve; 95. Retaining ring; 10. Worm; 101. Rocker. DETAILED DESCRIPTION
[0033] The present application is further described in detail below with reference to the accompanying drawings.
[0034] The present application discloses a penetration resistance meter for measuring the setting time of concrete mixture, referring to Figure 1 and Figure 2 The penetration resistance meter includes a rectangular base 1, a pressure sensor 11 is installed in the base 1, a measuring component is provided on the base 1, a rectangular movable opening 2 is opened on the top surface of the base 1, a sliding plate 3 is slidably provided at the bottom of the movable opening 2, a mold barrel 4 is rotatably connected to the sliding plate 3, and a sprocket ring 41 is provided on the bottom peripheral wall of the mold barrel 4. A driving sprocket 13 and a driven sprocket 14 are rotatably provided at both ends of the length direction of the side away from the column 5 in the base 1, a handwheel 131 is fixed to the driving sprocket 13 by bolts, and the handwheel 131 is rotatably provided on the top surface of the base 1, a chain 15 is wound around the driving sprocket 13 and the driven sprocket 14, and the chain 15 is engaged with the sprocket ring 41 near the column 5.
[0035] Reference Figure 2 and Figure 3The measuring assembly includes a column, the column 5 is fixed to the side wall of one side of the length direction of the base 1 by bolts, and a measuring device 12 electrically connected to the pressure sensor 11 is installed at the end of the column 5 away from the base 1. The column 5 is fixed with a support arm 6 by bolts at a section away from the base 1, and the support arm 6 is integrally formed with a support rod 7 at a section close to the column 5. The top of the support rod 7 is processed to form a rotating column 71, and the end of the support arm 6 away from the column 5 is processed to form a positioning sleeve 61. The top of the support rod 7 is rotatably connected to the pressure rod 8, and one end of the pressure rod 8 is provided with a first strip hole 81. The first strip hole A first sliding shaft 52 is slidably provided in the shaped hole 81, a connecting groove 51 is opened at a section of the column 5 away from the base 1, both ends of the first sliding shaft 52 are slidably connected to the inner wall of the connecting groove 51, the other end of the pressure rod 8 is processed to form a handle 83, a penetration column 9 is inserted in the positioning sleeve 61, a fork 91 is formed at the top of the penetration column 9, a second sliding shaft 92 is passed through the top of the fork 91, a second strip hole 82 is opened at a section of the pressure rod 8 close to the handle 83, the second sliding shaft 92 is passed through and slides in the second strip hole 82, and a penetration needle 93 is threadedly connected to the bottom of the penetration column 9.
[0036] When using this penetration resistance meter, the concrete mixture to be tested is loaded into the mold barrel 4, and the handle 83 is pressed to rotate the pressure rod 8 with the rotating column 71 as the axis. At the same time, the first sliding shaft 52 and the second sliding shaft 92 slide in the first strip hole 81 and the second strip hole 82 respectively. The pressure rod 8 presses the second sliding shaft 92 to make the penetration column 9 slide vertically downward along the positioning sleeve 61 to ensure that the penetration column 9 can move vertically downward smoothly. The handle 83 is continuously pressed until the penetration needle 93 is inserted into the concrete mixture, and the current penetration resistance is read by the measuring device 12.
[0037] Before measuring the penetration resistance again, push the mold barrel 4 to drive the sliding plate 3 to move along the movable opening 2, and then turn the hand wheel 131 to rotate the mold barrel 4 on the sliding plate 3. After the bottom of the penetration needle 93 is away from the measured measuring point, the penetration resistance measurement can be carried out again. By moving the sliding plate 3 and turning the hand wheel 131 multiple times, it is convenient for the staff to carry out multiple concrete mixture setting time measurements, reducing the staff fatigue caused by repeated movement of the mold barrel.
[0038] Reference Figure 2A worm 10 is rotatably mounted on the side of the base 1 away from the column 5. One end of the worm 10 extends outside the base 1 and is bolted to a rocking wheel 101. A rack 31 is bolted to the side of the sliding plate 3 away from the column 5. The rack 31 meshes with the worm 10. When using the penetration resistance meter, rotating the rocking wheel 101 causes the worm 10 to rotate. The rack 31, meshed with the worm 10, drives the sliding plate 3 along the movable opening 2, facilitating movement of the mold barrel 4. Simultaneously, the meshing of the worm wheel and the rack 31 creates a self-locking effect, increasing the stability of the sliding plate 3 in the movable opening 2 during measurement. This facilitates multiple measurements of the setting time of concrete mixtures and reduces fatigue caused by repeated movement of the mold barrel.
[0039] Reference Figure 1 and Figure 2 An L-shaped sliding groove 16 is defined on the side of the base 1 facing away from the column 5. This groove is located at the end of the base 1 facing away from the driving sprocket 13. The opening of the sliding groove 16 communicates with the top surface of the base 1. A driven sprocket 14 slides within the sliding groove 16. A moving rod is bolted to the top of the driven sprocket 14. When using the penetration resistance meter, pushing the moving rod causes the driven sprocket 14 to move along the sliding groove 16 until it reaches the end of the groove 16 closest to the driving sprocket 13. At this point, the chain 15 is no longer tensioned, making it easier for operators to remove and place the mold drum 4, allowing for multiple concrete mixture setting time measurements.
[0040] Reference Figure 3 A slot 84 is formed on the compression rod 8, away from the handle 83, to mate with the rotating column 71. Multiple slots 84 are provided along the length of the compression rod 8. When using the penetration resistance meter, the compression rod 8 is pulled to engage different slots 84 within the rotating column 71, thereby adjusting the distance between the handle 83 and the rotating column 71. This allows the operator to adjust the required downward pressure according to the degree of concrete setting, facilitating multiple measurements of the setting time of concrete mixtures.
[0041] Reference and Figure 1 and Figure 2 The bottom of the movable opening 2 is provided with a guide groove 21, and the bottom of the sliding plate 3 is integrally formed with a guide block 32 that cooperates with the guide groove 21. When the penetration resistance meter is used, the guide block 32 can move along the guide groove 21, ensuring that the sliding plate 3 moves smoothly within the movable opening 2 and at the same time ensuring the stability of the sliding plate 3 when the mold barrel 4 rotates on the sliding plate 3.
[0042] Reference Figure 3 The second sliding shaft 92 is provided with a sliding sleeve 921 around its circumference. When the penetration resistance meter is used, the sliding sleeve 921 can reduce the friction force when the second sliding shaft 92 slides in the second strip-shaped hole 82, making it easier for the operator to press the pressure rod 8 and perform multiple concrete mixture setting time measurements.
[0043] Reference Figure 1 and Figure 2 An adjustment sleeve 94 is mounted on the portion of penetration column 9 away from pressure rod 8. One end of adjustment sleeve 94 is mounted on the wall of penetration needle 93 near the penetration column 9. When using this penetration resistance meter, adjustment sleeve 94 enhances the stability of the connection between penetration column 9 and penetration needle 93, ensuring that penetration needle 93 can be vertically inserted into the concrete mixture being measured.
[0044] Reference Figure 1 and Figure 2 A retaining ring 95 is formed on the top of the adjusting sleeve 94. The diameter of retaining ring 95 is larger than the diameter of the top of the positioning sleeve 61. When the penetration resistance meter is used, retaining ring 95 can be pressed downward along with the penetration column 9. Retaining ring 95 can abut against the top of the positioning sleeve 61, thereby limiting the downward pressing depth of the penetration column 9 during the pressing process and preventing the penetration needle 93 from being inserted too deeply into the concrete mixture.
[0045] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.
Claims
1. A penetration resistance meter for measuring the setting time of concrete mixtures, characterized by: The penetration resistance meter comprises a base (1), a pressure sensor (11) is installed in the base (1), a measuring assembly is arranged on the base (1), a movable opening (2) is opened on the base (1), a sliding plate (3) is slidably arranged in the movable opening (2), a mold barrel (4) is rotatably connected to the sliding plate (3), a sprocket ring (41) is sleeved on the peripheral wall of the mold barrel (4), a driving sprocket (13) and a driven sprocket (14) are rotatably arranged in the base (1), a handwheel (131) is fixedly connected to the driving sprocket (13), the handwheel (131) is located on the base (1), a chain (15) is wound around the driving sprocket (13) and the driven sprocket (14), and one side of the chain (15) is engaged with the sprocket ring (41).
2. The penetration resistance meter for measuring the setting time of concrete mixture according to claim 1, characterized in that: The measuring assembly comprises a column (5) fixedly connected to the base (1), a measuring device (12) electrically connected to the pressure sensor (11) is installed on the column (5), a support arm (6) is fixedly connected to the column (5), a support rod (7) is provided on the support arm (6), a positioning sleeve (61) is provided at one end of the support arm (6), a pressure rod (8) is rotatably connected to the support rod (7), a first strip hole (81) is provided at one end of the pressure rod (8), a first sliding shaft (52) is slidably provided in the first strip hole (81), and a support rod (7) is provided on the column (5). A connecting groove (51) is provided, the first sliding shaft (52) is slidably connected to the connecting groove (51), a handle (83) is provided at the other end of the pressure rod (8), a penetration column (9) is inserted into the positioning sleeve (61), a fork (91) is provided on the penetration column (9), a second sliding shaft (92) is passed through the top of the fork (91), a second strip hole (82) is opened on the pressure rod (8), the second sliding shaft (92) is passed through and slides in the second strip hole (82), and a penetration needle (93) is threadedly connected to the bottom of the penetration column (9).
3. The penetration resistance meter for measuring setting time of concrete mixture according to claim 1, characterized in that: The base (1) is rotatably provided with a worm (10), one end of the worm (10) is fixedly connected to a rocking wheel (101), and the sliding plate (3) is fixedly connected to a rack (31), and the rack (31) is meshed with the worm (10).
4. The penetration resistance meter for measuring the setting time of concrete mixture according to claim 3, characterized in that: The base (1) is provided with a sliding groove (16), the driven sprocket (14) slides in the sliding groove (16), and a moving rod is fixed to the top of the driven sprocket (14).
5. The penetration resistance meter for measuring the setting time of concrete mixture according to claim 2, characterized in that: The support rod (7) is provided with a rotating column (71), and the pressure rod (8) is processed to form a clamping groove (84) that matches the rotating column (71), and at least two clamping grooves (84) are provided.
6. The penetration resistance meter for measuring the setting time of concrete mixture according to claim 5, characterized in that: A guide groove (21) is provided in the movable opening (2), and a guide block (32) matching the guide groove (21) is integrally formed on the bottom of the sliding plate (3).
7. The penetration resistance meter for measuring the setting time of concrete mixture according to claim 6, characterized in that: A sliding sleeve (921) is sleeved on the peripheral wall of the second sliding shaft (92).
8. The penetration resistance meter for measuring the setting time of concrete mixture according to claim 7, characterized in that: The peripheral wall of the penetration column (9) is provided with an adjustment sleeve (94), and one end of the adjustment sleeve (94) is sleeved on the peripheral wall of the penetration needle (93).
9. The penetration resistance meter for measuring the setting time of concrete mixture according to claim 8, characterized in that: A retaining ring (95) is formed on the adjusting sleeve (94).