A detection device for ready-mixed mortar

Abstract

This utility model belongs to the field of premixed mortar testing, and particularly relates to a testing device for premixed mortar. It includes a base for placing a test mold and a column at one end of the base. A fixing plate is located on the column away from the base, and a fixing tube is located on the side of the fixing plate away from the column. The fixing tube is vertically arranged, and a test rod is fitted inside the fixing tube. Both ends of the test rod penetrate the fixing tube, and a limiting plate is located at the top of the test rod. The test rod can undergo free fall within the fixing tube. The test rod is positioned above the base, and the length of the limiting plate is greater than the outer diameter of the fixing tube. This utility model, by understanding the working principle of existing Vicat apparatuses, replaces the manual parts with a lifting rack and pinion structure and an electromagnetic push rod, thereby achieving automated testing. Workers only need to place the test mold in the appropriate position on the base to achieve automated inspection.

Description

Technical Field

[0001] This utility model belongs to the field of premixed mortar testing, and in particular relates to a testing device for premixed mortar. Background Technology

[0002] Premixed mortar refers to mortar products in which raw materials such as cement, sand, mineral admixtures, and additives are pre-measured, mixed, and stirred in a certain proportion, and then supplied to the construction site in the form of dry-mixed mortar or wet-mixed mortar. It can be used directly or after simple preparation and is a modern building material that replaces traditional on-site mixed mortar in construction.

[0003] Testing of premixed mortar before it leaves the factory is a crucial step in ensuring that its quality meets standards and engineering requirements. Current testing for premixed mortar mainly focuses on: 1. Appearance quality; 2. Consistency; 3. Water retention; 4. Setting time. Consistency and setting time are both tested using a Vicat apparatus. Although the Vicat apparatus can perform the above two tests, the operation must be done manually, which is inefficient. Utility Model Content

[0004] This invention addresses the technical problems existing in the Vicat instrument for testing premixed mortar, and proposes a premixed mortar testing device that is reasonably designed, simple in structure, easy to process, and capable of semi-automatic testing.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a testing device for premixed mortar, including a base for placing a test mold and a column set at one end of the base. A fixing plate is set on the column away from the base, and a fixing tube is set on the side of the fixing plate away from the column. The fixing tube is vertically arranged, and a test rod is fitted inside the fixing tube. Both ends of the test rod pass through the fixing tube, and a limiting plate is set on the top of the test rod. The test rod can make free fall motion inside the fixing tube. The test rod is set above the base, and the length of the limiting plate is greater than the outer diameter of the fixing tube. A lifting rack is also set on the fixing plate, and the lifting rack is slidably set on the fixing plate. A drive gear is also set on the fixing plate, and the drive gear meshes with the lifting rack. A drive motor for controlling the rotation of the drive gear is set on the fixing plate. The top of the lifting rack can contact the limiting plate. An electromagnetic push rod is also set on the fixing plate, and the power end of the electromagnetic push rod passes through the fixing tube and can contact the test rod.

[0006] Preferably, the lifting rack is disposed on both sides of the fixed tube.

[0007] Preferably, the back of the lifting rack is provided with a sliding groove, and the fixing plate is provided with a track that cooperates with the sliding groove.

[0008] Preferably, the drive motor is located on one side of any one of the lifting racks, and the power end of the drive motor is connected to a rotating shaft, with the drive gears of the two lifting racks meshing on the rotating shaft.

[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0010] This utility model provides a testing device for premixed mortar. By understanding the working principle of the existing Vicat apparatus, the manual part is replaced by a structure of lifting rack and electromagnetic push rod, thereby realizing the automation of testing. Workers only need to place the test mold in the corresponding position on the base to realize the subsequent automated inspection. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of the testing device for premixed mortar provided in Example 1;

[0013] Figure 2 This is a schematic diagram of the premixed mortar testing device provided in Example 1 from another angle;

[0014] Figure 3 This is a front view of the testing device for premixed mortar provided in Example 1;

[0015] In the above figures, 1 is the base; 11 is the column; 2 is the fixing plate; 21 is the fixing tube; 22 is the track; 3 is the lifting rack; 4 is the drive motor; 41 is the rotating shaft; 42 is the drive gear; 5 is the electromagnetic push rod; 6 is the test rod; 61 is the limiting plate; and 62 is the initial setting needle. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1, such as Figures 1-3 As shown, this embodiment aims to improve the efficiency of existing Vicat instruments and increase detection efficiency. To this end, the detection device for premixed mortar provided in this embodiment includes a base 1 for placing test molds and a column 11 set at one end of the base 1. Since this embodiment uses electrical equipment, a control box is also installed at one end of the base 1 that fixes the column 11. The column 11 is hollow to facilitate wire threading.

[0019] In this embodiment, the column 11 is inverted L-shaped to ensure that the test rod 6 is above the test mold. A fixing plate 2 is provided on the column 11 away from the base 1. The fixing plate 2 is rectangular and its long side is vertical. A fixing tube 21 is provided on the side of the fixing plate 2 away from the column 11. The fixing tube 21 is welded to the fixing plate 2 and is vertical. The test rod 6 is installed inside the fixing tube 21. The test rod 6 is cylindrical, just like the existing Vicat apparatus. Both ends of the test rod 6 pass through the fixing tube 21. A limiting plate 61 is provided at the top of the test rod 6. In this embodiment, the limiting plate 61 is disc-shaped. Its purpose is twofold: 1. To prevent the test rod 6 from falling out of the fixing tube 21, because the test rod 6 needs to make free fall motion inside the fixing tube 21 when it is working; 2. To facilitate the upward movement of the lifting rack 3. For this reason, the diameter of the limiting plate 61 is larger than the outer diameter of the fixing tube 21. Of course, the test rod 6 is above the base 1, and when placing the test mold, the test mold needs to be placed below the test rod 6.

[0020] Because the Vicat apparatus determines consistency, initial setting time, and final setting time by raising the test rod 6 to a specified height and then allowing it to fall freely under gravity, the depth to which the rod is inserted into the mold is used to determine these parameters. Therefore, in this embodiment, a threaded cap is provided at the bottom of the test rod 6 to connect the initial setting needle 62, the final setting needle, and the test rod 6 column. In this embodiment, the initial setting needle 62 is taken as an example.

[0021] To raise the test rod 6 to the specified height, a lifting rack 3 is also provided on the fixed plate 2. In this embodiment, the lifting rack 3 is located on both sides of the fixed tube 21 and is slidably mounted on the fixed plate 2. Specifically, a sliding groove is provided on the back of the lifting rack 3, and a track 22 that cooperates with the sliding groove is provided on the fixed plate 2. The track 22 is a cylindrical track 22. This arrangement is intended to ensure the stability of the test rod 6 during its ascent.

[0022] A drive gear 42 is also provided on the fixed plate 2, which meshes with the lifting rack 3. A drive motor 4 for controlling the rotation of the drive gear 42 is also provided on the fixed plate 2. Specifically, a mounting plate is provided on one side of the fixed plate 2, and the drive motor 4 is fixed to the mounting plate by bolts. The power end of the drive motor 4 passes through the mounting plate and is connected to a rotating shaft 41. A bearing seat is installed on the outside of the drive rack, and the rotating shaft 41 maintains rotational stability through the bearing inside the bearing seat. In this way, the movement of two lifting racks 3 can be driven by one motor. The top of the lifting rack 3 can contact the limiting plate 61. When testing is required, the drive motor 4 works, driving the lifting rack 3 to move upward. Since it is motor controlled, its stroke is controllable, so the height of the test rod 6 can be determined.

[0023] Since the test rod 6 is to fall freely, and the downward movement speed of the lifting rack 3 will affect its free fall, an electromagnetic push rod 5 is also provided on the fixing plate 2. The power end of the electromagnetic push rod 5 passes through the fixing tube 21 and can contact the test rod 6. In this way, the test rod 6 is fixed by the pressing of the power end of the electromagnetic push rod 5.

[0024] In actual operation, the drive motor 4 works to control the lifting rack 3 to move upward. After the test rod 6 reaches the specified height, the electromagnetic push rod 5 works to fix the test rod 6. When testing is required, the electromagnetic push rod 5 resets, the test rod 6 loses its limit and falls freely, inserting into the test mold to complete the test. There are two ways to determine the insertion depth: one is to use a displacement sensor to determine the descent height of the test rod 6, and the other is to add a scale to the test rod 6 to determine the descent height.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A testing device for premixed mortar, comprising a base for placing a test mold and a column disposed at one end of the base, characterized in that, A fixing plate is installed on the column away from the base. A fixing tube is installed on the side of the fixing plate away from the column. The fixing tube is vertically arranged, and a test rod is fitted inside the fixing tube. Both ends of the test rod pass through the fixing tube, and a limit plate is installed at the top of the test rod. The test rod can undergo free fall within the fixing tube. The test rod is positioned above the base. The length of the limit plate is greater than the outer diameter of the fixing tube. A lifting rack is also provided on the fixing plate, which is slidably mounted on the fixing plate. A drive gear is also provided on the fixing plate, which meshes with the lifting rack. A drive motor for controlling the rotation of the drive gear is provided on the fixing plate. The top of the lifting rack can contact the limit plate. An electromagnetic push rod is also provided on the fixing plate, with its power end passing through the fixing tube and contacting the test rod.

2. The testing device for premixed mortar according to claim 1, characterized in that, The lifting racks are arranged on both sides of the fixed tube.

3. The testing device for premixed mortar according to claim 2, characterized in that, The back of the lifting rack is provided with a sliding groove, and the fixing plate is provided with a track that cooperates with the sliding groove.

4. The testing device for premixed mortar according to claim 3, characterized in that, The drive motor is located on one side of any one of the lifting racks, and the power end of the drive motor is connected to a rotating shaft. The drive gears of the two lifting racks are both mounted on the rotating shaft.

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