Test piece fast-assembly type mortar impermeability instrument based on test hole as assembly reference

Abstract

The utility model relates to a test piece fast-assembly type mortar impermeability instrument based on a test hole as an assembly benchmark, which comprises an instrument body and a plurality of test tools, each test tool comprises a base and a sample die holder, a mortar sample is hermetically installed on the sample die holder, the middle part of the base is provided with the test hole which extends upwards and is communicated with the outside, and the test hole is communicated with the sample die holder. The test tool further comprises alignment parts which take the test hole as a reference and are distributed on the base and / or the sample die holder, and a plurality of self-locking type pressing feet which take the test hole as a reference and are distributed on the periphery of the base. On one hand, the center line of the mortar sample and the center line of the test hole are relatively overlapped and assembled based on alignment, and the self-locking type pressing feet are combined for all-directional pressing and positioning, so that the mortar sample is quickly assembled, and the test failure rate is also reduced; on the other hand, the deviation ratio of the center of the test hole and the center of the test piece is reduced, the accuracy of the test result is increased, the damage risk of the test piece is low, and the test repeatability is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of test piece performance detection, and particularly relates to a test piece quick-assembly type mortar impermeability instrument based on a test hole as an assembly reference. BACKGROUND

[0002] The impermeability instrument is a device for measuring the impermeability of concrete or other building materials, and its working principle is based on the principle that pressure is equal everywhere in a sealed container (water head is ignored), and the test is carried out by applying pressure through a water pump and keeping the pressure within a specified range through an intelligent digital control meter. The specific test steps are as follows:

[0003] 1) Test piece preparation: Formed test pieces are prepared according to the material ratio required by the design, and are cured according to the specifications of the department or international standards. The test body is taken out of the curing room one day before the test, the surface of the test body is treated, and the test body is loaded into the test sample mold base;

[0004] 2) Installation of test sample mold base: The test sample mold base with the sealed test body is reliably fixed on the instrument, and the sealing between the test sample mold bases is ensured;

[0005] 3) Water filling and air exhaust: Open the various cutoff doors, and fill water into the water storage tank through the funnel until the water in the test sample mold base tray is also full, so as to exhaust the air in the pipeline system; then close the cutoff door leading to the test sample mold base;

[0006] 4) Pressurization and observation: Start the water pump, gradually increase the water pressure, and observe the change of the pressure gauge. When the pressure water penetrates out, record the water pressure at this time as the pressure value of the test;

[0007] 5) Data recording and analysis: According to the test results, calculate the impermeability grade of the test piece, and evaluate its impermeability performance.

[0008] However, in the installation of the above test piece, the traditional mortar impermeability instrument seals and assembles the mortar test piece and the test sample mold base, then fixes the test sample mold base on the base, and then fixes the test sample mold base by using the aligned bolt holes and external bolts. Obviously, the following technical defects exist:

[0009] (1) This fixing method needs to consume a lot of time in the installation and disassembly process of the test sample mold base, and because the tightness of the bolt is difficult to control, the sealing of the test sample mold base and the base is uneven, which leads to a high probability of test failure;

[0010] (2) If there is a deviation between the center of the test hole and the center of the test piece, not only the probability of inaccurate test results is increased (the deviation between the center of the test hole and the center of the test piece will cause uneven stress on the test piece, thereby affecting the accuracy of the test results, and the evaluation of the impermeability performance may be deviated, and the impermeability of the material cannot be truly reflected), but also the risk of test piece damage is increased (the deviation may cause local stress concentration, so that the test piece is more likely to crack or break during the test, thereby affecting the smooth progress of the test), and the repeatability is poor (if the deviation is different each time, the repeatability and consistency of the test results will be affected, and it is difficult to effectively compare and analyze). SUMMARY

[0011] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, and provide a novel test piece quick-mounting type mortar impermeability instrument based on a test hole as an assembly reference.

[0012] To solve the above technical problem, the utility model adopts the following technical scheme:

[0013] A test piece quick-mounting type mortar impermeability instrument based on a test hole as an assembly reference, comprising an instrument body and a plurality of test tools mounted on the instrument body, wherein each test tool comprises a base, a test sample mold seat in sealing connection with the base, and a mortar test sample in sealing installation on the test sample mold seat, in particular, a test hole extending upward and in communication with the outside is formed in the middle of the base, the test tool further comprises alignment components distributed on the base and / or the test sample mold seat and taking the test hole as a reference, and a plurality of self-locking type presser feet distributed on the periphery of the base and taking the test hole as a reference, wherein the alignment components are used for alignment assembly of the base and the test sample mold seat to make the center line of the mortar test sample and the center line of the test hole relatively coincide; and each self-locking type presser foot is vertically and positively pressed on the test sample mold seat in the same movement posture.

[0014] Preferably, the alignment components are at least two groups and are uniformly spaced around the center line direction of the test hole. In the alignment matching, it is more conducive to the relative coincidence of the center line of the mortar test sample and the center line of the test hole.

[0015] According to one specific implementation and preferred aspect of the utility model, each group of alignment components is in a tenon and groove structure; each group of alignment components comprises a tenon column mounted on one of the base and the test sample mold seat, and a tenon groove arranged on the other and matched with the tenon column. Based on the alignment of the tenon and groove structure, the assembly of the test piece and the test tool is facilitated.

[0016] According to another specific implementation and preferred aspect of the utility model, a positioning groove concentric with the test hole is further arranged on the base, and the positioning groove is matched with the bottom of the mortar test sample. Based on the matching of the positioning groove and the mortar test sample, the coincidence degree of the center line of the mortar test sample and the center line of the test hole is further improved.

[0017] According to another specific implementation and preferred aspect of the utility model, a sealing groove concentric with the test hole is further arranged on the base, wherein the inner diameter of the sealing groove is greater than the outer diameter of the bottom of the mortar sample; the test tool further comprises a sealing ring installed in the sealing groove. Based on the assembly of the sealing ring, the sealing property of the base and the sample mold base is improved.

[0018] According to another specific implementation and preferred aspect of the utility model, the four self-locking press feet are uniformly spaced around the center line direction of the test hole.

[0019] Preferably, the self-locking press foot comprises a base, a handle rotatably installed on the base, a press arm rod connected with the handle, a connecting rod rotatably installed on the press arm rod and the handle at both ends, and a press head module vertically installed on the end of the press arm rod, wherein after the handle is operated, the press arm rod and the connecting rod are connected and drive the press arm rod to horizontally extend, and the press head module vertically presses on the sample mold base.

[0020] In some specific implementations, the press head module comprises a press rod vertically penetrating the end of the press arm rod, and a press head fixedly installed on the bottom of the press rod.

[0021] Preferably, the press head is in the shape of a frustum along the length direction of the press rod, and the bottom of the frustum vertically presses on the sample mold base.

[0022] In addition, when the self-locking press foot is self-locked, the handle is perpendicular to the press arm rod.

[0023] Compared with the prior art, the utility model has the following advantages due to the implementation of the above technical solutions:

[0024] When the existing mortar test piece is sealed and assembled with the test sample mold base, the bolt holes are aligned and external bolts are used to fix the test sample mold base. Obviously, this fixing method needs to consume a lot of time in the process of installing and dismounting the test sample mold base, and the sealing of the test sample mold base and the base is uneven due to the difficulty in controlling the tightness of the bolts, which leads to a high probability of test failure. In addition, if there is a deviation between the center of the test hole and the center of the test piece, not only the probability of inaccurate test results is increased (the deviation between the center of the test hole and the center of the test piece will lead to uneven stress of the test piece, thereby affecting the accuracy of the test results, and the evaluation of the impermeability performance may be deviated, which cannot truly reflect the impermeability of the material), but also the risk of damage to the test piece is increased (the deviation may lead to local stress concentration, so that the test piece is more likely to crack or break during the test, thereby affecting the smooth progress of the test), and the repeatability is poor (if the deviation is different each time, the repeatability and consistency of the test results will be affected, which is difficult to effectively compare and analyze), and other defects. The structure of the mortar impermeability instrument is designed as a whole in the present application, which ingeniously solves the defects and shortcomings of the prior art. After the test piece fast-assembly type mortar impermeability instrument based on the test hole is adopted, the test sample mold base with the mortar test sample is assembled with the base in position to make the center line of the mortar test sample and the center line of the test hole relatively coincide, and then the respective self-locking type pressure feet are operated to be vertically and normally pressed on the test sample mold base in the same motion posture to complete the assembly of the mortar test sample. Therefore, on the one hand, the mortar test sample is quickly assembled based on the relative coincidence of the center line of the mortar test sample and the center line of the test hole in position, and the self-locking type pressure feet are combined to realize all-around pressing and positioning, which also reduces the test failure rate. On the other hand, the deviation rate of the center of the test hole and the center of the test piece is reduced, which not only increases the accuracy of the test results, but also reduces the risk of damage to the test piece, and the repeatability of the test is high. BRIEF DESCRIPTION OF DRAWINGS

[0025] The utility model will be explained in further detail below in combination with the drawings and specific embodiments.

[0026] Figure 1 It is a front view schematic diagram of the mortar impermeability instrument of the embodiment;

[0027] Figure 2 It is a front view schematic diagram of the mortar impermeability instrument of the embodiment; Figure 1

[0028] Figure 3 It is a front view schematic diagram of a single test tool in the mortar impermeability instrument; Figure 1

[0029] Figure 4 It is a top view schematic diagram of the mortar impermeability instrument of the embodiment; Figure 3

[0030] Figure 5 It is a front view schematic diagram of the base in the mortar impermeability instrument; Figure 3 ​​​​

[0031] Figure 6 for Figure 5 A top-down view;

[0032] Figure 7 for Figure 3 A front view schematic diagram of a single self-locking presser foot in the pressed-in state;

[0033] Figure 8 for Figure 3 A front view schematic diagram of a single self-locking presser foot in the disengaged state;

[0034] Among them: 1. Instrument body;

[0035] 2. Test fixture; 20. Base; 200. Test hole; 201. Positioning groove; 202. Sealing groove; 21. Sample mold base; 22. Alignment component; 220. Tenon; 221. Tenon groove; 23. Self-locking presser foot; 230. Base; 231. Handle; 232. Press arm rod; 233. Connecting rod; 234. Press head module; a. Press rod; b. Press head; 24. Sealing ring;

[0036] 3. Mortar samples (specimens). Detailed Implementation

[0037] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0038] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and are not used to denote or imply relative importance or a number of indicated technical features. Thus, features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0040] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature. It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes, and are not the only embodiment.

[0042] As Figures 1 to 8 The embodiment relates to a test piece quick-mounting type mortar impermeability instrument based on a test hole as an assembly reference, which comprises an instrument body 1 and a plurality of test tools 2 mounted on the instrument body 1.

[0043] Each test tool 2 comprises a base 20, a sample mold seat 21 sealingly connected with the base 20, and a mortar sample 3 sealingly installed in the sample mold seat 21; a test hole 200 extending upward and communicating with the outside is formed in the middle of the base 20; the test tool 2 further comprises alignment components 22 distributed on the base 20 and / or the sample mold seat 21 based on the test hole 200, and a plurality of self-locking type presser feet 23 distributed on the periphery of the base 20 based on the test hole 200, wherein the alignment components 22 are used for alignment assembly of the base 20 and the sample mold seat 21 so that the center line of the mortar sample 3 and the center line of the test hole 200 are relatively coincident.

[0044] The alignment components 22 are two groups (of course, three groups or more groups are also possible), and are uniformly spaced around the center line direction of the test hole 200. In the alignment matching, it is more beneficial for the center line of the mortar sample and the center line of the test hole to be relatively coincident. Each group of alignment components 22 is in a mortise and tenon structure; each group of alignment components 22 comprises a tenon column 220 installed on one of the base 20 and the sample mold seat 21, and a mortise 221 arranged on the other and matched with the tenon column 200. The alignment based on the mortise and tenon structure facilitates the assembly of the test piece and the test tool.

[0045] The base 20 is further provided with a positioning groove 201 concentric with the test hole 200, and the positioning groove 201 is matched with the bottom of the mortar sample 3. Based on the matching of the positioning groove and the mortar sample, the coincidence degree of the center line of the mortar sample and the center line of the test hole is further improved. Meanwhile, the base 20 is further provided with a sealing groove 202 concentric with the test hole 200, wherein the inner diameter of the sealing groove 202 is greater than the outer diameter of the bottom of the mortar sample 3; the test tool 2 further comprises a sealing ring 24 installed in the sealing groove 202. Based on the assembly of the sealing ring, the sealing property of the base and the sample mold seat is increased.

[0046] In some specific embodiments, the self-locking type presser feet 23 are four, and are uniformly spaced around the center line direction of the test hole 200. Each self-locking type presser foot 23 is vertically and positively pressed on the sample mold seat 21 in the same motion posture.

[0047] Specifically, the self-locking type presser foot 23 comprises a base 230, a handle 231 rotationally installed on the base 230, a press arm rod 232 connected with the handle 231, a connecting rod 233 having two ends rotationally installed on the press arm rod 232 and the handle 231 respectively, and a press head module 234 vertically installed on the end of the press arm rod 232, wherein after the handle 231 is operated, the press arm rod 232 and the connecting rod 233 are connected and driven to horizontally extend, and the press head module 234 is vertically and positively pressed on the sample mold seat 21.

[0048] In this example, when the self-locking type presser foot 23 is self-locked, the handle 231 is perpendicular to the press arm rod 232. The press head module 234 vertically penetrates the press rod a at the end of the press arm rod 232, and the press head b is fixedly installed at the bottom of the press rod a. The press head b is in a frustum shape with gradually decreasing outer diameter along the length direction of the press rod a, and is pressed on the sample mold base 21 from the bottom of the frustum.

[0049] In summary, after the test hole based test piece fast assembly type mortar impermeability instrument is adopted, the sample mold base loaded with the mortar sample is assembled with the base in position to make the center line of the mortar sample and the center line of the test hole relatively coincide, then the self-locking type presser feet are operated to vertically and normally press on the sample mold base in the same movement posture to complete the assembly of the mortar sample. Therefore, the mortar sample is quickly assembled by relatively coinciding the center line of the mortar sample and the center line of the test hole based on the position and combined with the all-around pressing and positioning of the plurality of self-locking type presser feet, the test failure rate is reduced, the deviation rate of the center of the test hole and the center of the test piece is reduced, the accuracy of the test result is increased, the risk of damage of the test piece is low, the repeatability of the test is high, the center line of the mortar sample and the center line of the test hole are relatively coincided in the position matching, the position based on the mortise and tenon structure is convenient for the assembly of the test piece and the test tool, the matching of the positioning groove and the mortar sample further improves the coincidence degree of the center line of the mortar sample and the center line of the test hole, the assembly based on the sealing ring increases the sealing property of the base and the sample mold base, the self-locking type presser feet form the relatively unified posture of pressing down to keep the relatively uniform normal pressure, the self-locking is relatively stable, and the sealing property of the assembly of the mortar sample is improved.

[0050] The above detailed description of the utility model is for the purpose of enabling those skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model, and equivalent changes or modifications made according to the spirit and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A test piece quick-assembly type mortar impermeability tester based on a test hole as an assembly reference, comprising a tester body and a plurality of test tools mounted on the tester body, wherein each test tool comprises a base, a test piece mold seat in sealing connection with the base, and a mortar test piece in sealing installation on the test piece mold seat, characterized in that: a test hole extending upward and communicating with the outside is formed in the middle of the base, the test tool further comprises alignment components distributed on the base and / or the test piece mold seat and taking the test hole as a reference, and a plurality of self-locking type presser feet distributed on the periphery of the base and taking the test hole as a reference, wherein the alignment components are used for alignment assembly of the base and the test piece mold seat so that the center line of the mortar test piece and the center line of the test hole are relatively coincident; and each self-locking type presser foot is vertically and positively pressed on the test piece mold seat in the same movement posture. The alignment components are at least two groups and are uniformly spaced around the center line direction of the test hole.

2. The test piece quick-assembly type mortar impermeability apparatus based on the test hole as the assembly reference according to claim 1, characterized in that: Each group of alignment components is in a tenon and groove structure; and each group of alignment components comprises a tenon column mounted on one of the base and the test piece mold seat, and a tenon groove provided on the other and matched with the tenon column.

3. The test piece quick-assembly type mortar impermeability apparatus based on the test hole as the assembly reference according to claim 2, characterized in that: A positioning groove concentric with the test hole is further provided on the base, and the positioning groove is matched with the bottom of the mortar test piece.

4. The test hole assembly reference based test piece quick-mount type mortar impermeability tester according to claim 1, characterized in that: A sealing groove concentric with the test hole is further provided on the base, wherein the inner diameter of the sealing groove is greater than the outer diameter of the bottom of the mortar test piece; and the test tool further comprises a sealing ring mounted in the sealing groove.

5. The test hole assembly reference based test piece quick-mount type mortar impermeability tester according to claim 1, characterized in that: The self-locking type presser feet are four and are uniformly spaced around the center line direction of the test hole.

6. The test hole assembly reference based test piece quick-mount type mortar impermeability tester according to claim 1, characterized in that: The self-locking type presser feet comprise a base, a handle rotatably mounted on the base, a press arm rod linked with the handle, a connecting rod having two ends rotatably mounted on the press arm rod and the handle respectively, and a press head module vertically mounted on the end of the press arm rod, wherein after the handle is operated, the press arm rod and the connecting rod are linked and drive the press arm rod to horizontally extend, and the press head module is vertically and positively pressed on the test piece mold seat.

7. The test hole assembly reference based test piece quick-assembly type mortar impermeability tester according to claim 6, characterized in that: The press head module comprises a press rod vertically penetrating the end of the press arm rod, and a press head fixedly mounted on the bottom of the press rod.

8. The test piece quick-assembly type mortar impermeability apparatus based on the test hole as the assembly reference according to claim 7, characterized in that: The press head is in the shape of a frustum taper along the length direction of the press rod, and is flatly pressed on the test piece mold seat from the bottom of the frustum taper.

9. The test piece quick-assembly type mortar impermeability apparatus based on the test hole as the assembly reference according to claim 8, characterized in that: When the self-locking type presser feet are self-locked, the handle is perpendicular to the press arm rod.

10. The test hole assembly reference based test piece quick-mount type mortar impermeability tester according to claim 7, characterized in that: ​

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