Cement initial setting limiter

Abstract

The utility model relates to a cement initial setting limiter, which belongs to the technical field of cement testing and comprises a bottom plate, a glass plate arranged on the top surface of the bottom plate, a conical cutting die fixedly connected to the top surface of the glass plate, a mounting plate fixedly connected to the back surface of the bottom plate, a display plate fixedly connected to the front surface of the mounting plate, and scale marks engraved on the front surface of the display plate. A test rod is placed on the front face of the display plate, a pointer is fixedly installed on the front face of the test rod, a connecting plate is fixedly connected to the bottom face of the test rod, an initial setting test needle is fixedly connected to the bottom face of the connecting plate, and two movable plates are placed on the top face of the glass plate. According to the cement initial setting limiter, under the action of the limiter, an initial setting test needle is limited, the initial setting test needle is prevented from being in direct contact with a glass plate as much as possible, the initial setting test needle is effectively prevented from being damaged in the test process, and the accuracy of a test result is guaranteed; and a worker can conveniently know the position of the initial coagulation test needle.

Description

Technical Field

[0001] This utility model relates to the field of cement testing technology, specifically a cement initial setting limiter. Background Technology

[0002] Cement: A powdered hydraulic inorganic binder that forms a paste when mixed with water. It can harden in air or water and firmly bind materials such as sand and stone together. Early mixtures of lime and volcanic ash were very similar to modern lime-volcanic ash cement. Concrete made by binding crushed stone with cement not only has high strength after hardening but also resists erosion from fresh or salt water. For a long time, it has been widely used as an important binder in civil engineering, water conservancy, and national defense projects.

[0003] After cement production is completed, it needs to be tested. During the initial setting test of cement, the specimen is cured in a wet curing chamber for 30 minutes after water is added. The specimen is then removed from the wet curing chamber and placed under the test needle. The test needle is lowered to contact the surface of the cement paste. After tightening the screw for one to two seconds, it is suddenly loosened, allowing the test needle to sink vertically and freely into the cement paste. The reading of the pointer is observed when the test needle stops sinking or when the test needle is released for 30 seconds.

[0004] In the existing cement initial setting test process, the initial setting needle is easily stuck to the glass plate surface during the first test. As the number of tests increases, the cement initial setting needle is prone to bending, affecting the accuracy of the test results. Therefore, a cement initial setting limiter is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a cement initial setting limiter, which has the advantages of improved stability and accuracy. It solves the problem that in the existing cement initial setting test process, the initial setting needle is easily stuck to the glass plate surface during the first test, and the cement initial setting needle is prone to bending as the number of tests increases, affecting the accuracy of the test results.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cement initial setting limiter, including a base plate, a glass plate placed on the top surface of the base plate, a conical mold fixedly connected to the top surface of the glass plate, an installation plate fixedly connected to the back of the base plate, and a display plate fixedly connected to the front of the installation plate.

[0007] The front of the display panel is engraved with scale lines. A test rod is placed on the front of the display panel. A pointer is fixedly installed on the front of the test rod. A connecting plate is fixedly connected to the bottom of the test rod. A preliminary solidification test needle is fixedly connected to the bottom of the connecting plate. Two movable plates are placed on the top of the glass plate. Limiters are fixedly connected to the opposite sides of the two movable plates.

[0008] The base plate is equipped with a fixing component for fixing the movable plate.

[0009] Furthermore, the initial setting needle is located between two limiters, and the two limiters are symmetrically distributed about the initial setting needle.

[0010] Furthermore, the movable plate is an L-shaped plate, the connecting plate is located at the bottom of the display plate, both ends of the pointer correspond to the scale lines, and the cone mold is a hollow cone with missing top and bottom surfaces.

[0011] Furthermore, the fixing component includes two clamping plates, which are respectively fixedly connected to the left and right sides of the base plate. Each of the two clamping plates has a drive rod movably connected to its opposite side via a bearing. Each of the two drive rods has a screw extending into its opposite side. The two screws are respectively fixedly connected to two movable plates. Each of the two clamping plates has a limit groove on its top surface. Each of the two movable plates has a limit plate extending into the limit groove on its side near the screw.

[0012] Furthermore, both the card plate and the limiting plate are L-shaped plates, with the limiting plate located at the bottom of the drive rod, and the limiting plate and the limiting groove being slidably connected.

[0013] Furthermore, each of the two drive rods has a threaded hole on one of its opposite sides, and the two screws extend into the interior of the two threaded holes and are threadedly connected to them.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. This cement initial setting limiter restricts the initial setting test needle by limiting its movement, thus preventing direct contact between the needle and the glass plate and effectively avoiding damage during the test. This ensures the accuracy of the test results. The scale and pointer also allow staff to easily monitor the position of the initial setting test needle.

[0016] 2. This cement initial setting limiter, through the threaded connection between the screw and the drive rod, conveniently moves the moving plate, making it easy for operators to operate and improving testing efficiency. Furthermore, through the sliding connection between the limit plate and the limit groove, the moving plate is supported, improving its stability and making it more convenient and practical. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2This is a top view of the right-side card plate in the structure of this utility model.

[0019] In the diagram: 1. Base plate, 2. Glass plate, 3. Conical mold, 4. Moving plate, 5. Limiter, 6. Connecting plate, 7. Test rod, 8. Display plate, 9. Pointer, 10. Scale line, 11. Mounting plate, 12. Initial setting test needle, 13. Clamping plate, 14. Drive rod, 15. Screw, 16. Limiting groove, 17. Limiting plate. Detailed Implementation

[0020] 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.

[0021] Example 1: Please refer to Figures 1 to 2 The cement initial setting limiter in this embodiment includes a base plate 1, a glass plate 2 placed on the top surface of the base plate 1, a conical mold 3 fixedly connected to the top surface of the glass plate 2, an installation plate 11 fixedly connected to the back of the base plate 1, and a display plate 8 fixedly connected to the front of the installation plate 11. The conical mold 3 is made of a corrosion-resistant metal with sufficient hardness.

[0022] The front of the display plate 8 is engraved with scale lines 10. A test rod 7 is placed on the front of the display plate 8. A pointer 9 is fixedly installed on the front of the test rod 7. A connecting plate 6 is fixedly connected to the bottom of the test rod 7. A preliminary coagulation test needle 12 is fixedly connected to the bottom of the connecting plate 6. Two movable plates 4 are placed on the top of the glass plate 2. Limiters 5 are fixedly connected to the opposite sides of the two movable plates 4.

[0023] Among them, the initial setting test needle 12 is located between the two limiters 5. The two limiters 5 are symmetrically distributed on the left and right with the initial setting test needle 12 as the center. The moving plate 4 is an L-shaped plate. The connecting plate 6 is located at the bottom of the display plate 8. Both ends of the pointer 9 correspond to the scale line 10. The cone mold 3 is a cone with a hollow interior and missing top and bottom surfaces.

[0024] Specifically, the conical mold 3 is placed on the base plate 1, and the test rod 7 moves the initial setting needle 12 downward. The connecting plate 6 and the limiter 5 contact each other to restrict the initial setting needle 12 and avoid contact between the initial setting needle 12 and the glass plate 2 as much as possible. The cement is tested under the action of the initial setting needle 12, and the test data is read under the action of the pointer 9 and the scale line 10.

[0025] Example 2: Please refer to Figures 1 to 2In this embodiment, based on Example 1, a fixing assembly is provided on the base plate 1. The fixing assembly includes two clamping plates 13, which are fixedly connected to the left and right sides of the base plate 1, respectively. A drive rod 14 is movably connected to the opposite side of the two clamping plates 13 via bearings. A screw 15 extending into the opposite side of the two drive rods 14 is movably connected to the opposite side of the two drive rods 14. The two screws 15 are fixedly connected to the two moving plates 4, respectively. A limiting groove 16 is provided on the top surface of the two clamping plates 13. A limiting plate 17 extending into the limiting groove 16 is fixedly connected to the side of the two moving plates 4 near the screw 15.

[0026] The card plate 13 and the limiting plate 17 are both L-shaped plates. The limiting plate 17 is located at the bottom of the drive rod 14. The limiting plate 17 and the limiting groove 16 are slidably connected. Threaded holes are opened on the opposite side of the two drive rods 14. The two screws 15 extend into the interior of the two threaded holes and are threadedly connected to them.

[0027] Specifically, rotating the drive rod 14 causes it to rotate. Through the threaded connection between the drive rod 14 and the screw 15, and the sliding connection between the limiting plate 17 and the limiting groove 16, the screw 15 drives the moving plate 4 to move, so that the two limiters 5 are located on the left and right sides of the initial coagulation needle 12.

[0028] The working principle of the above embodiments is as follows:

[0029] The conical mold 3 is placed on the base plate 1. The drive rod 14 is rotated to make the drive rod 14 rotate. Through the threaded connection between the drive rod 14 and the screw 15 and the sliding connection between the limiting plate 17 and the limiting groove 16, the screw 15 drives the moving plate 4 to move, so that the two limiters 5 are located on the left and right sides of the initial setting test needle 12. The test rod 7 drives the initial setting test needle 12 to move downward. The connecting plate 6 contacts the limiter 5 to restrict the initial setting test needle 12 and avoid contact between the initial setting test needle 12 and the glass plate 2 as much as possible. The cement is tested under the action of the initial setting test needle 12, and the test data is read under the action of the pointer 9 and the scale line 10.

[0030] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] 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 cement initial setting limiter, including a base plate (1), characterized in that: A glass plate (2) is placed on the top surface of the base plate (1), a conical mold (3) is fixedly connected to the top surface of the glass plate (2), an mounting plate (11) is fixedly connected to the back of the base plate (1), and a display plate (8) is fixedly connected to the front of the mounting plate (11). The front of the display panel (8) is engraved with scale lines (10). A test rod (7) is placed on the front of the display panel (8). A pointer (9) is fixedly installed on the front of the test rod (7). A connecting plate (6) is fixedly connected to the bottom of the test rod (7). A coagulation test needle (12) is fixedly connected to the bottom of the connecting plate (6). Two movable plates (4) are placed on the top of the glass plate (2). Limiters (5) are fixedly connected to the opposite sides of the two movable plates (4). The base plate (1) is provided with a fixing component for fixing the movable plate (4).

2. The cement initial setting limiter according to claim 1, characterized in that: The initial coagulation needle (12) is located between two limiters (5), and the two limiters (5) are symmetrically distributed on the left and right sides with the initial coagulation needle (12) as the center.

3. The cement initial setting limiter according to claim 2, characterized in that: The movable plate (4) is an L-shaped plate, the connecting plate (6) is located at the bottom of the display plate (8), both ends of the pointer (9) correspond to the scale line (10), and the cone mold (3) is a hollow cone with missing top and bottom surfaces.

4. The cement initial setting limiter according to claim 1, characterized in that: The fixing assembly includes two clamping plates (13), which are fixedly connected to the left and right sides of the base plate (1), respectively. Each of the two clamping plates (13) has a drive rod (14) movably connected to the opposite side of the two clamping plates (13) via a bearing. Each of the two drive rods (14) has a screw (15) movably connected to the opposite side of the two drive rods (14) with one end extending into it. Each of the two screws (15) is fixedly connected to two moving plates (4). Each of the two clamping plates (13) has a limiting groove (16) on its top surface. Each of the two moving plates (4) has a limiting plate (17) movably connected to the side of the two moving plates (4) near the screw (15) with one end extending into the limiting groove (16).

5. The cement initial setting limiter according to claim 4, characterized in that: Both the card plate (13) and the limiting plate (17) are L-shaped plates. The limiting plate (17) is located at the bottom of the drive rod (14). The limiting plate (17) and the limiting groove (16) are slidably connected.

6. The cement initial setting limiter according to claim 5, characterized in that: The two drive rods (14) each have a threaded hole on one side opposite to each other, and the two screws (15) extend into the two threaded holes and are threadedly connected to them.

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