A scraper device for a cement spread tester

Abstract

The present invention belongs to the field of rheology or the field of fluid mechanics technology, and particularly relates to a scraper device for a cement spread tester. The scraper device of the present invention includes a height-adjusting ring unit sleeved on the pillar; a lower horizontally extending column unit arranged on the height-adjusting ring unit; a vertically extending column unit arranged at the end of the lower horizontally extending column unit; an upper horizontally extending column unit arranged at the end of the vertically extending column unit; and a scraper unit arranged at the end of the upper horizontally extending column unit and used for scraping the residual cement at the top of the truncated cone mold. This device is installed on the pillar under the operation table of the spread tester, and is usually integrally arranged with the pillar. When in use, the scraper can be taken out by folding multiple times to scrape the residual cement at the upper end of the truncated cone mold. Moreover, when not in use, it can be reversely folded to be stored in the extending direction of the pillar again, without occupying external space.

Description

Technical Field

[0001] The present invention belongs to the field of rheology or the field of fluid mechanics technology, and particularly relates to a scraper device for a cement spread tester. Background Art

[0002] A cement spread tester is an experimental device used to measure the rheological properties of cement. Cement needs to have a certain fluidity and plasticity during the construction process to facilitate pouring, perfusion, and construction operations. The test method can refer to "Evaluation of Cement Adaptability by Mortar Spread Method" (Huang Yingzi, Chen Jun, Xiong Yijun; DOI: 10.13697 / j.cnki.32-1449 / tu.2023.01.002). The spread tester for the rheological properties of cement can be used to measure the fluidity and spreadability of cement slurry under certain conditions, and usually consists of the following main components:

[0003] 1. Test device: It includes a conical container with scales for holding cement slurry, having standardized shapes and sizes.

[0004] 2. Test sample: A certain proportion of cement and water are mixed to form cement slurry, and it is stirred and cured for a certain period of time to ensure the consistency of the sample.

[0005] 3. Measuring instrument: Usually, a measuring device such as a scale located on the conical container is used to measure the spread height of the cement slurry in the conical container, or some electronic devices that can directly measure the height of the cement slurry.

[0006] Particularly, in the spread test of the rheological properties of cement, the cement may exceed the edge of the conical container during the addition process. This is because the cement may flow and spread during the addition process, causing its height to exceed the edge of the conical container. However, the key to the test is to measure the spread height of the cement slurry within a certain period of time. The cement residue on the edge of the conical container may affect the accuracy of the measurement process. If the cement residue on the container edge is not thoroughly removed before each test, the cement residue may form an uneven coating on the inner wall of the container, resulting in an increase or decrease in the friction between the cement slurry and the inner wall of the container. This may affect the fluidity and spread performance of the cement slurry, leading to deviation of the measurement results, and further causing problems with the repeatability of the test results. And inconsistent residues may result in different initial conditions for each test, thus causing significant differences between the measurement results.

[0007] Based on this, there is currently a need for a device that can conveniently clean the cement residue on the edge of the conical container during the cement spread test. Summary of the Invention

[0008] The object of the present invention is to provide a scraper device for a cement spread tester. The device is installed on a pillar under the working table of the spread tester. Usually, it is integrally set with the pillar. When in use, the scraper can be taken out by folding multiple times to scrape the residual cement on the upper end of the frustum mold. And when not in use, it can be reversely folded to be stored in the extending direction of the pillar again, without occupying external space.

[0009] The technical solution adopted by the present invention to solve the above problems is: a scraper device for a cement spread tester, wherein the cement spread tester includes a working table, a frustum mold placed on the working table, and a pillar for supporting the working table; the scraper device includes:

[0010] A height-adjusting ring unit, sleeved on the pillar;

[0011] A lower horizontal extension column unit, arranged on the height-adjusting ring unit;

[0012] A vertical extension column unit, arranged at the end of the lower horizontal extension column unit;

[0013] An upper horizontal extension column unit, arranged at the end of the vertical extension column unit;

[0014] A scraper unit, arranged at the end of the upper horizontal extension column unit and used for scraping the residual cement at the top of the frustum mold.

[0015] A further preferred technical solution lies in that: the upper horizontal extension column unit includes an upper horizontal extension column and a connecting column groove arranged on the upper horizontal extension column; the scraper unit includes a scraper and a connecting column arranged on the scraper and installed in the connecting column groove.

[0016] A further preferred technical solution lies in that: the upper horizontal extension column unit further includes a limiting groove arranged on the inner side surface of the connecting column groove; the scraper unit further includes a limiting block arranged on the connecting column and used for engaging with the limiting groove.

[0017] A further preferred technical solution lies in that: the vertical extension column unit includes a vertical extension column, a horizontal limiting groove arranged on the vertical extension column, an upper rotating column arranged on the horizontal limiting groove and rotatably connected to the upper horizontal extension column, and a vertical limiting groove communicating with the horizontal limiting groove.

[0018] A further preferred technical solution lies in that: the vertical extension column unit further includes a ball head arranged at the end of the vertical extension column; the lower horizontal extension column unit includes a lower extension column and a ball table part arranged at the end of the lower extension column and used for connecting the ball head.

[0019] A further preferred technical solution lies in that: the height-adjusting ring unit includes a height-adjusting ring, a ring locking bolt arranged on the height-adjusting ring and used for jacking up the support column, an extended column groove body arranged on the height-adjusting ring, and a lower rotating column arranged on the inner side surface of the extended column groove body; the lower horizontal extended column unit further includes a rotating column hole for installing the lower rotating column, and a rotating column locking bolt for jacking up the lower rotating column.

[0020] A further preferred technical solution lies in that: the table tennis table part includes a fixed table arranged at the end of the lower extended column, a movable table matched with the fixed table, a sliding groove arranged at the end of the lower extended column, and a sliding block arranged on the movable table and used for installing in the sliding groove.

[0021] A further preferred technical solution lies in that: the table tennis table part further includes a threaded hole arranged on the sliding block, a rotating hole communicated with the sliding groove, and an adjusting bolt installed in the rotating hole and used for screwing the threaded hole.

[0022] A further preferred technical solution lies in that: the table tennis table part further includes a positioning groove arranged on the inner side surface of the rotating hole, and a positioning block arranged on the adjusting bolt and used for clamping the positioning groove.

[0023] A further preferred technical solution lies in that: the table tennis table part further includes a vertical stop groove arranged on the fixed table; the vertical extended column unit further includes a thin rod arranged on the ball head and used for connecting the vertical extended column.

[0024] In summary, the present invention has the following beneficial effects:

[0025] 1. The scraper device is installed on the support column under the operation table in a folding manner, ensuring that the scraper can be taken in time to clean the residual cement on the edge of the truncated cone mold during each test;

[0026] 2. After the scraper device is used, it can be folded and stored in a state integrated with the support column under the operation table, hardly occupying external space;

[0027] 3. A right-angle structure is formed between the respective extended columns for fixing the scraper, so that the scraper always moves in a horizontal state during the process of scraping cement;

[0028] 4. The length of the scraper extending out is adjustable to adapt to truncated cone molds of different specifications. Description of the Drawings

[0029] Figure 1 It is a schematic diagram of a cement spread tester and a scraper device thereon.

[0030] Figure 2 It is Figure 1 a schematic diagram of the scraper unit retracted into the upper horizontal extended column unit in

[0031] Figure 3 It isFigure 2 Schematic diagram of the upper-middle horizontally extending column unit rotating and being received into the vertically extending column unit.

[0032] Figure 4 For Figure 3 Schematic diagram of the vertically extending column unit rotating and switching to the same extending direction as the lower horizontally extending column unit.

[0033] Figure 5 For Figure 4 Schematic diagram of the lower-middle horizontally extending column unit rotating and being received into the same extending direction as the support column.

[0034] Figure 6 Schematic diagram of the structure at the connection between the scraper unit and the upper-middle horizontally extending column unit.

[0035] Figure 7 Schematic diagram of the structure at the connection between the upper-middle horizontally extending column unit and the vertically extending column unit.

[0036] Figure 8 For Figure 7 Schematic diagram of the upper-middle horizontally extending column unit rotating and being received into the vertically extending column unit.

[0037] Figure 9 Schematic diagram of the connection between the vertically extending column unit and the lower horizontally extending column unit.

[0038] Figure 10 For Figure 9 Schematic diagram of the vertically extending column unit rotating and switching to the same extending direction as the lower horizontally extending column unit.

[0039] Figure 11 Schematic diagram of the connection between the lower horizontally extending column unit and the height adjustment ring unit.

[0040] Figure 12 Schematic diagram of observing the connection between the lower horizontally extending column unit and the height adjustment ring unit from a top-down view.

[0041] Figure 13 Schematic diagram of observing the connection between the lower horizontally extending column unit and the height adjustment ring unit from an axial view.

[0042] Figure 14 Schematic diagram of the structure of the ball table part.

[0043] Figure 15 For Figure 14 Schematic diagram of the movable table moving away from the fixed table.

[0044] Figure 16 For Figure 14 Schematic diagram of clockwise rotating the ball head.

[0045] Figure 17 For Figure 14Schematic diagram enlarged at the middle adjusting bolt.

[0046] In the attached drawings, the components represented by each reference numeral are as follows: operating table 11, truncated cone mold 12, support column 13, height-adjusting ring unit 1, lower horizontal extension column unit 2, vertical extension column unit 3, upper horizontal extension column unit 4, scraper unit 5, height-adjusting ring 101, ring locking bolt 102, extension column groove body 103, lower rotating column 104, lower extension column 201, ball table part 202, rotating column hole 203, rotating column locking bolt 204, vertical extension column 301, horizontal limiting groove 302, upper rotating column 303, vertical limiting groove 304, ball head 305, thin rod 306, upper horizontal extension column 401, connecting column groove 402, limiting groove 403, scraper 501, connecting column 502, limiting block 503, fixed table 202a, movable table 202b, sliding groove 202c, sliding block 202d, threaded hole 202e, rotating hole 202f, adjusting bolt 202g, positioning groove 202h, positioning block 202i, vertical stopping groove 202j. Detailed implementation mode

[0047] The present invention will be further described in detail below with reference to the attached drawings.

[0048] This specific embodiment is only an interpretation of the present invention and is not a limitation thereof. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0049] Embodiment 1:

[0050] In this embodiment, the scraper device for a cement spread tester includes:

[0051] Height-adjusting ring unit 1, lower horizontal extension column unit 2, vertical extension column unit 3, upper horizontal extension column unit 4, scraper unit 5, wherein:

[0052] The height-adjusting ring unit 1 includes a height-adjusting ring 101, a ring locking bolt 102, an extension column groove body 103, and a lower rotating column 104;

[0053] The lower horizontal extension column unit 2 includes a lower extension column 201, a ball table part 202, a vertical rotating column hole 203, and a rotating column locking bolt 204;

[0054] The vertical extension column unit 3 includes a vertical extension column 301, a horizontal limiting groove 302, an upper rotating column 303, a vertical limiting groove 304, a ball head 305, and a thin rod 306;

[0055] The upper horizontal extension column unit 4 includes an upper horizontal extension column 401, a connecting column groove 402, and a limiting groove 403;

[0056] The scraper unit 5 includes a scraper 501, a connecting column 502, and a limit block 503;

[0057] Reference Figure 1 , shows a schematic diagram of a cement spread tester and its upper scraper device. It can be seen that the height-adjusting ring unit 1 is sleeved on the support column 13; the lower horizontally extending column unit 2 is arranged on the height-adjusting ring unit 1; the vertically extending column unit 3 is arranged at the end of the lower horizontally extending column unit 2; the upper horizontally extending column unit 4 is arranged at the end of the vertically extending column unit 3; the scraper unit 5 is arranged at the end of the upper horizontally extending column unit 4 and is used to scrape the residual cement at the top of the frustum mold 12. The support column 13 should have sufficient stability to ensure that the workbench 11 moves or tilts during the test, thereby avoiding affecting the test results. A fixed fixture is also provided on the workbench 11 to firmly fix the frustum mold 12 on the workbench 11 to prevent the container from moving during the test. Preferably, an observation window can also be left on the workbench 11 so that the operator can clearly observe and record the changes of the cement slurry in the frustum mold 12.

[0058] The scraper unit 5 is located directly above the frustum mold 12 and is fixed to the support column 13 at the bottom of the workbench 11 by the upper horizontally extending column unit 4, the vertically extending column unit 3, the lower horizontally extending column unit 2, and the height-adjusting ring unit 1 in sequence. Since the support column 13 is generally arranged at the center of the lower bottom surface of the workbench 11, the sum of the horizontal distances of the height-adjusting ring unit 1 and the lower horizontally extending column unit 2 should be at least more than half of the width of the workbench 11, so that the vertically extending column unit 3 can cross the horizontal plane of the workbench 11 and come to the upper position of the workbench 11, and through the upper horizontally extending column unit 4 extending reversely to the lower horizontally extending column unit 2, the scraper unit 5 fixed on it can contact the upper edge of the frustum mold 12. The vertically extending column unit 3 can rotate relative to the lower horizontally extending column unit 2, thereby driving the scraper unit 5 to scrape repeatedly above the frustum mold 12 to remove the residual cement on it.

[0059] Reference Figure 2 , shows Figure 1 a schematic diagram of the scraper unit retracting into the upper horizontally extending column unit in [reference]. The arrow in the figure indicates the moving direction of the scraper unit 5, showing that the scraper unit 5 can adjust its overall length with the upper horizontally extending column unit 4 by retraction, and through the length adjustment, the scraper unit 5 can be accurately positioned above the frustum mold 12.

[0060] Reference Figure 3 , shows Figure 2Schematic diagram of the upper horizontal extension column unit rotating and being received into the vertical extension column unit. The arrow in the figure indicates the moving direction of the scraper unit 5. It can be seen that after the scraper unit 5 is used, the scraper unit 5 can be rotated and received into the upper horizontal extension column unit 4 to complete the first storage.

[0061] Reference Figure 4 , shows Figure 3 Schematic diagram of the vertical extension column unit in the middle rotating and switching to the same extension direction as the lower horizontal extension column unit. The arrow in the figure indicates the moving direction of the vertical extension column unit 3. It can be seen that the vertical extension column unit 3 can change its orientation by rotating so that its extension direction is the same as that of the lower horizontal extension column unit 2 to complete the second storage.

[0062] Reference Figure 5 , shows Figure 4 Schematic diagram of the lower horizontal extension column unit in the middle rotating and being received into the same extension direction as the support column. The arrow in the figure shows the moving direction of the lower horizontal extension column unit 2. The lower horizontal extension column unit 2 rotates downward until it fits with the support column 13, so that it is integrated with the support column 13 without laterally expanding and occupying space to complete the third storage. Preferably, a fixing cable can be used to tie the support column 13 and the lower horizontal extension column unit 2 together to achieve complete fixation and facilitate carrying out or storage after not being used for a long time.

[0063] Reference Figure 6 , shows the structural schematic diagram of the connection between the scraper unit and the upper horizontal extension column unit. It can be seen that the scraper unit 5 includes a scraper 501 and a connecting column 502 provided on the scraper 501 and installed in the connecting column groove 402. The upper horizontal extension column unit 4 includes an upper horizontal extension column 401 and a connecting column groove 402 provided on the upper horizontal extension column 401. The scraper 501 inserts the connecting column 502 provided at its tail end into the connecting column groove 402 on the upper horizontal extension column 401 and adjusts the depth of insertion of the connecting column 502 into the connecting column groove 402, thereby realizing the adjustment of the distance from the truncated cone mold 12.

[0064] In addition, the upper horizontally extending column unit 4 further includes a limiting groove 403 provided on the inner side surface of the connecting column groove 402; the scraping unit 5 further includes a limiting block 503 provided on the connecting column 502 and used for engaging with the limiting groove 403. In this embodiment, a plurality of limiting grooves 403 are provided on the inner side surface of the connecting column groove 402, and 8 are provided respectively at the upper and lower positions. One limiting block 503 is provided on each of the upper and lower sides of the connecting column 502 for simultaneously engaging with the limiting grooves 403 located on the upper and lower sides of the connecting column 502. The limiting block 503 has a certain elasticity. By pulling the connecting column 502 forcefully, the limiting block 503 can cross the current limiting groove 403 and reach its adjacent limiting groove 403. Preferably, the limiting block 503 is provided with an arc-shaped end to make it more convenient to cross the limiting groove 403.

[0065] Reference Figure 7 , shows a schematic structural view of the connection between the upper horizontally extending column unit and the vertically extending column unit. It can be seen that the vertically extending column unit 3 includes a vertically extending column 301, a horizontal limiting groove 302 provided on the vertically extending column 301, an upper rotating column 303 provided on the horizontal limiting groove 302 and rotatably connected to the upper horizontally extending column 401, and a vertical limiting groove 304 communicating with the horizontal limiting groove 302. The horizontal limiting groove 302 has a horizontal groove bottom surface. When the upper horizontally extending column 401 is horizontally arranged, its bottom surface contacts the groove bottom surface of the horizontal limiting groove 302 to keep it in a horizontal state.

[0066] Reference Figure 8 , shows Figure 7 a schematic view of the upper horizontally extending column unit rotating and being received into the vertically extending column unit in [reference]. The vertical limiting groove 304 has a groove side surface parallel to the extending direction of the vertically extending column 301. When the horizontally extending column 401 is vertically arranged, its side surface contacts the groove side surface of the vertical limiting groove 304 and is stuck in the vertical limiting groove 304 to complete the receiving process. A rotating hole is provided at the connection between the horizontally extending column 401 and the upper rotating column 303, and one end of the connection is an arc-shaped structure, which will not touch the groove bottom surface of the horizontal limiting groove 302 or the groove side surface of the vertical limiting groove 304 during the rotation process.

[0067] Reference Figure 9, which shows a schematic diagram of the connection between the vertically extending column unit and the lower horizontally extending column unit. It can be seen that the vertically extending column unit 3 further includes a ball head 305 provided at the end of the vertically extending column 301; the lower horizontally extending column unit 2 includes a lower extending column 201, and a ball table part 202 provided at the end of the lower extending column 201 and used to connect the ball head 305. The ball head 305 can rotate in any direction within the ball table part 202 and is restricted within the ball table part 202. For the specific structure, reference can be made to the ball table structure on a photographic tripod in the prior art. In this way, when using the scraper 501, holding the scraper 501 and rotating it horizontally, the ball head 305 also rotates within the ball table part 202, and the scraper 501 realizes horizontal rotation with the vertically extending column 301 as the axis, and can more smoothly remove the cement at the upper edge of the truncated cone circular mold 12.

[0068] Reference Figure 10 , which shows Figure 9 a schematic diagram of the vertically extending column unit rotating and switching to the same extending direction as the lower horizontally extending column unit in [reference]. The ball head 305 can adjust the direction to make the extending directions of the vertically extending column 301 and the lower extending column 201 consistent. For the overall state of the device, reference can be made to Figure 4 .

[0069] Reference Figure 11 , which shows a schematic diagram of the connection between the lower horizontally extending column unit and the height adjustment ring unit. It can be seen that the height adjustment ring unit 1 includes a height adjustment ring 101, a ring locking bolt 102 provided on the height adjustment ring 101 and used to jack up the support column 13, an extension column groove body 103 provided on the height adjustment ring 101, and a lower rotating column 104 provided on the inner side surface of the extension column groove body 103. The lower rotating column 104 is rotatably connected to the inner end of the lower extending column 201, so that the lower extending column 201 can rotate within the plane range formed by the extension column groove body 103. The ring locking bolt 102 is screwed into a threaded hole reserved on the height adjustment ring 101, and the inner end abuts against the support column 13. By tightening or loosening the ring locking bolt 102, the locking and non-locking states of the height adjustment ring 101 on the support column 13 can be switched. The height adjustment ring 101 can move up and down along the support column 13 to simultaneously adjust the height positions between the various units, and finally make the height position of the scraper 501 match the height of the truncated cone circular mold 12.

[0070] Reference Figure 12 , which shows a schematic diagram of observing the connection between the lower horizontally extending column unit and the height adjustment ring unit from a top view. It can be seen that the lower horizontally extending column unit 2 further includes a rotating column locking bolt 204 used to jack up the lower rotating column 104. The rotating column locking bolt 204 is screwed into a threaded hole at the end of the lower extending column 201, and the inner end of the rotating column locking bolt 204 abuts against the lower rotating column 104. By tightening or loosening the rotating column locking bolt 204, the locking and non-locking states of the lower extending column 201 on the lower rotating column 104 can be switched.

[0071] Reference Figure 13 shows a schematic diagram of the connection between the lower laterally extending column unit and the height adjustment ring unit as observed from the axial perspective. It can be seen that the lower laterally extending column unit 2 further includes a rotating column hole 203 for installing the lower rotating column 104, and the threaded hole at the end of the lower extending column 201 is communicated with the rotating column hole 203, so that the inner end of the rotating column locking bolt 204 can abut against the lower rotating column 104.

[0072] In summary, the usage method of the scraper device is as follows:

[0073] S01. Expand the lower laterally extending column unit 2 and make it perpendicular to the support column 13 to complete the first expansion process;

[0074] S02. Expand the vertically extending column unit 3 and make it perpendicular to the lower laterally extending column unit 2 to complete the second expansion process;

[0075] S03. Expand the upper laterally extending column unit 4 and make it perpendicular to the vertically extending column unit 3 to complete the third expansion process;

[0076] S04. Extend the scraper unit 5 outwards and just position it above the truncated cone circular die 12 to complete the fourth expansion process;

[0077] S05. Adjust the height position of the height adjustment ring unit 1 and make the scraper unit 5 just contact the upper edge of the truncated cone circular die 12 to complete the expansion process.

[0078] The storage method of the scraper device is as follows:

[0079] S11. Retract the scraper unit 5 into the upper laterally extending column unit 4 to complete the first storage process;

[0080] S12. Rotate and store the upper laterally extending column unit 4 into the vertically extending column unit 3 to complete the second storage process;

[0081] S13. Adjust the extending direction of the vertically extending column unit 3 to be the same as that of the lower laterally extending column unit 2 to complete the third storage process;

[0082] S14. Adjust the extending direction of the lower laterally extending column unit 2 to be the same as that of the support column 13 to complete the storage process.

[0083] Embodiment 2

[0084] In this embodiment, the structure of the scraper device is basically the same as that in Embodiment 1, and the difference lies in:

[0085] The ball table part 202 includes a fixed table 202a, a movable table 202b, a sliding groove 202c, a sliding block 202d, a threaded hole 202e, a rotating hole 202f, an adjusting bolt 202g, a positioning groove 202h, a positioning block 202i, and a vertical stop groove 202j.

[0086] Reference Figure 14 , which shows a schematic structural view of the ball table part. It can be seen that the ball table part 202 includes a fixed table 202a provided at the end of the lower extension column 201, and a movable table 202b that cooperates with the fixed table 202a. The ball table part 202 is mainly composed of two parts, the fixed table 202a and the movable table 202b, and both the fixed table 202a and the movable table 202b are provided with mounting grooves with spherical inner cavities for mounting the ball head 305.

[0087] Reference Figure 15 , which shows Figure 14 a schematic view of the movable table away from the fixed table in []. It can be seen that when the movable table 202b is at a certain distance away from the fixed table 202a, the fixed table 202a and the movable table 202b release the extrusion and restriction on the ball head 305, enabling the ball head 305 to move freely between the fixed table 202a and the movable table 202b. When it is necessary to fix the ball head 305 again, just make the fixed table 202a and the movable table 202b approach each other again.

[0088] Reference Figure 16 , which shows for Figure 14 a schematic view of clockwise rotating the ball head in []. It can be seen that the ball table part 202 further includes a vertical stop groove 202j provided on the fixed table 202a; the vertical extension column unit 3 further includes a thin rod 306 provided on the ball head 305 and used for connecting the vertical extension column 301. The vertical stop groove 202j has a groove side surface perpendicular to the extending direction of the lower extension column 201. When the ball head 305 rotates upward and is fixed, the thin rod 306 just abuts against the groove side surface of the vertical stop groove 202j, making the vertical extension column 301 just perpendicular to the lower extension column 201.

[0089] Reference Figure 17 , which shows Figure 14 a magnified schematic view of the adjusting bolt in []. It can be seen that the ball table part 202 further includes a sliding groove 202c provided at the end of the lower extension column 201, and a sliding block 202d provided on the movable table 202b and used for being mounted in the sliding groove 202c. The movable table 202b realizes approaching and separating from the fixed table 202a through the sliding process of the sliding block 202d in the sliding groove 202c, thereby realizing the switching between the locked and unlocked states of the ball head 305.

[0090] The ball table part 202 further includes a threaded hole 202e provided on the sliding block 202d, a rotating hole 202f communicated with the sliding groove 202c, and an adjusting bolt 202g mounted in the rotating hole 202f and used for screwing into the threaded hole 202e. The sliding block 202d cannot rotate relative to the sliding groove 202c. By rotating the adjusting bolt 202g, the sliding block 202d can slide along the sliding groove 202c.

[0091] The table portion 202 further includes a positioning groove 202h provided on the inner side surface of the rotation hole 202f, and a positioning block 202i provided on the adjusting bolt 202g and used for clamping the positioning groove 202h. The positioning block 202i is provided on the portion of the adjusting bolt 202g located in the rotation hole 202f and is stuck in the positioning groove 202h. The positioning block 202i can rotate in the positioning groove 202h. However, due to the existence of the positioning groove 202h, the positioning block 202i cannot move axially along the rotation hole 202f. In this way, the adjusting bolt 202g can only rotate in the rotation hole 202f and will not move axially along the rotation hole 202f.

[0092] In addition, as much as possible, the same or similar element symbols are used in the drawings and the description to refer to the same or similar parts or steps. The drawings are presented in a simplified form and are not drawn to an exact scale. For convenience and clarity only, directional terms such as top, bottom, left, right, up, above, over, below, beneath, rear, and front may be used with respect to the drawings. These and similar directional terms should not be construed as limiting the scope of the present disclosure in any way.

Claims

1. A scraping device for a cement spread tester, wherein the cement spread tester includes an operating table, a frustum mold placed on the operating table, and a support column for supporting the operating table; characterized in that, The scraper device includes: a height-adjusting ring unit sleeved on the pillar; a lower horizontally extending column unit arranged on the height-adjusting ring unit; a vertically extending column unit arranged at the end of the lower horizontally extending column unit; an upper horizontally extending column unit arranged at the end of the vertically extending column unit; a scraper unit arranged at the end of the upper horizontally extending column unit and used for scraping the residual cement at the top of the truncated cone die; the upper horizontally extending column unit includes an upper horizontally extending column and a connecting column groove arranged on the upper horizontally extending column; the scraper unit includes a scraper and a connecting column arranged on the scraper and installed in the connecting column groove; the upper horizontally extending column unit further includes a limiting groove arranged on the inner side surface of the connecting column groove; the scraper unit further includes a limiting block arranged on the connecting column and used for engaging with the limiting groove; the vertically extending column unit includes a vertically extending column, a horizontal limiting groove arranged on the vertically extending column, an upper rotating column arranged on the horizontal limiting groove and rotatably connected to the upper horizontally extending column, and a vertical limiting groove communicating with the horizontal limiting groove; the vertically extending column unit further includes a ball head arranged at the end of the vertically extending column; the lower horizontally extending column unit includes a lower extending column and a ball table part arranged at the end of the lower extending column and used for connecting the ball head; the height-adjusting ring unit includes a height-adjusting ring, an extending column groove body arranged on the height-adjusting ring, and a lower rotating column arranged on the inner side surface of the extending column groove body; the lower horizontally extending column unit further includes a rotating column hole for installing the lower rotating column and a rotating column locking bolt for jacking up the lower rotating column; the ball table part includes a fixed table arranged at the end of the lower extending column, a movable table matching the fixed table, a sliding groove arranged at the end of the lower extending column, and a sliding block arranged on the movable table and used for installing in the sliding groove; the ball table part further includes a threaded hole arranged on the sliding block, a rotating hole communicating with the sliding groove, and an adjusting bolt installed in the rotating hole and used for screwing the threaded hole.

2. The scraper device for a cement spread tester according to claim 1, characterized in that, The height-adjusting ring unit further includes a ring locking bolt arranged on the height-adjusting ring and used for jacking up the pillar.

3. The scraper device for a cement spread tester according to claim 1, characterized in that, The ball table part further includes a positioning groove arranged on the inner side surface of the rotating hole and a positioning block arranged on the adjusting bolt and used for clamping the positioning groove.

4. A scraper device for a cement spread tester according to claim 1, characterized in that, The ball table part further includes a vertical stop groove arranged on the fixed table; the vertically extending column unit further includes a thin rod arranged on the ball head and used for connecting the vertically extending column.

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