Fixing device for drilling, coring and sample preparation of concrete test piece

Abstract

The utility model relates to a fixing device for drilling, coring and sample preparation of a concrete test piece, comprising: a rectangular frame body, one end face of which is fixedly provided with a first mounting piece with a threaded hole; the balancing weight is fixedly arranged in the frame body and located at the opposite end of the threaded hole, and a groove for containing a concrete test piece is formed in the direction, facing the threaded hole, of the balancing weight; the fixing assembly comprises a screw rod penetrating through the threaded hole, the screw rod is in threaded connection with the threaded hole, a fixing plate is installed at the end, extending into the frame body, of the screw rod, and the fixing plate and the groove are oppositely arranged and matched in size. In this way, it can be guaranteed that the appearance of the prepared concrete sample is regular, and the size accuracy of sample preparation is improved.

Description

Technical Field

[0001] The present application relates to the technical field of concrete specimen fixture equipment, and in particular to a fixture for drilling, coring and sampling concrete specimens. Background Art

[0002] The production of concrete specimens in concrete engineering is an indispensable process in the construction of engineering concrete. The durability, strength, and long-term performance of concrete all require the production of corresponding concrete specimens for testing and inspection, which is also to verify the construction quality of concrete engineering structures.

[0003] GB / T 50082-2009, "Standard for Test Methods of Long-term Properties and Durability of Ordinary Concrete," requires standardized sample preparation for chloride ion penetration testing using the electrical flux method. However, when using core drilling for sample preparation, the rotation of the electric drill and driller causes the concrete specimen to vibrate or tilt forward, resulting in irregular shapes and inaccurate dimensions. Summary of the Invention

[0004] The present application provides a fixing device for coring and sampling concrete specimens, which can solve the technical problem that during coring and sampling, the rotation of the electric drill and the drill causes the concrete specimen to vibrate or tilt forward, resulting in irregular shape and inaccurate size of the concrete specimen after sampling.

[0005] In a first aspect, embodiments of the present application provide a fixture for coring and sampling concrete specimens, comprising: a rectangular frame, a counterweight, and a fixture assembly. The rectangular frame has a first mounting member with a threaded hole fixed to one end face thereof; the counterweight is fixedly mounted within the frame and located opposite the threaded hole, the counterweight having a groove formed toward the threaded hole for accommodating the concrete specimen; and the fixture assembly includes a screw extending through the threaded hole, the screw being threadedly connected to the threaded hole, and a fixing plate mounted on one end of the screw extending into the frame, the fixing plate being arranged opposite the groove and having matching dimensions.

[0006] In combination with the first aspect, in one embodiment, the threaded hole is located at the geometric center of the end surface of the frame.

[0007] In combination with the first aspect, in one embodiment, the first mounting member is formed by cross-welding two stainless steel flat tubes, and the two stainless steel flat tubes are arranged diagonally relative to the end surface, and the threaded hole is opened at the intersection.

[0008] In combination with the first aspect, in one embodiment, the fixing assembly further includes a handle, and the handle is fixed to the end of the screw.

[0009] In combination with the first aspect, in one embodiment, a circular groove is provided at the geometric center of the fixing plate, an inner wall of the circular groove is provided with an internal thread, and an end of the screw is threadedly connected to the fixing plate.

[0010] In combination with the first aspect, in one embodiment, the counterweight block is solid precast concrete with a concrete strength grade of C40.

[0011] In combination with the first aspect, in one embodiment, the groove is a cubic groove.

[0012] In combination with the first aspect, in one embodiment, the counterweight block further includes a plurality of second mounting members, and the plurality of second mounting members are evenly distributed on the upper surface of the counterweight block.

[0013] In combination with the first aspect, in one embodiment, the second mounting member is made of stainless steel.

[0014] In combination with the first aspect, in one embodiment, the frame is made of stainless steel.

[0015] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0016] In the present application, a first mounting member with a threaded hole is fixed to one end face of a rectangular frame, and a counterweight is fixedly disposed within the frame, at the opposite end of the threaded hole, with a screw on the fixing assembly being threadedly connected to the threaded hole. During the coring process, when a concrete specimen meeting specifications is installed in the groove of the counterweight, the screw of the fixing assembly, at the opposite end of the groove, is forced through the threaded hole into the frame. Because a fixing plate is mounted at one end of the screw, and the fixing plate is disposed opposite the groove and has matching dimensions, after the screw has been inserted a certain distance into the frame, the fixing plate is tightly fastened to the groove, thereby securing the concrete specimen in the groove and preventing it from vibrating or falling out. In this way, during coring, even if the electric drill and drill rotate violently, the vibration of the concrete specimen can be significantly reduced, ensuring the regular appearance of the concrete specimen after sampling and improving the dimensional accuracy of the sample. The invention solves the technical problem in related art that when drilling and coring samples, the rotation of the electric drill and the drill causes the concrete specimen to vibrate or tilt forward, resulting in irregular shape and inaccurate size of the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A schematic diagram of a fixture for drilling and coring concrete specimens according to an embodiment of the present application;

[0019] Figure 2 For the embodiment of this application Figure 1 Schematic diagram of the midframe;

[0020] Figure 3 For the embodiment of this application Figure 1 Schematic diagram of the fixed components;

[0021] Figure 4 For the embodiment of this application Figure 1 Schematic diagram of the center counterweight.

[0022] In the picture:

[0023] 1. Frame; 101. Threaded hole; 102. First mounting member;

[0024] 2. Counterweight; 201. Groove; 202. Second mounting member;

[0025] 3. Fixing assembly; 301. Screw; 302. Fixing plate; 3021. Round groove; 303. Handle. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] An embodiment of the present application provides a fixing device for coring and sampling concrete specimens, which can solve the problem that during coring and sampling, the rotation of the electric drill and the drill causes the concrete specimen to vibrate or tilt forward, resulting in irregular shape and inaccurate size of the concrete specimen after sampling.

[0028] See also Figure 1 As shown, Figure 1This is a schematic diagram of a fixing device for drilling and coring concrete specimens according to an embodiment of the present application. The fixing device includes: a rectangular frame 1, a counterweight 2, and a fixing assembly 3. The rectangular frame 1 has a first mounting member 102 with a threaded hole 101 fixed in one end face thereof. The counterweight 2 is fixedly arranged inside the frame 1 and is located at the opposite end of the threaded hole 101. The counterweight 2 is provided with a groove 201 facing the threaded hole 101 for accommodating the concrete specimen. The fixing assembly 3 includes a screw 301 passing through the threaded hole 101, the screw 301 is threadedly connected to the threaded hole 101, and a fixing plate 302 is installed at one end of the screw 301 extending into the frame 1. The fixing plate 302 is arranged opposite to the groove 201 and has matching dimensions.

[0029] In this embodiment, the rectangular frame 1 is composed of a plurality of columns and a plurality of beams. It can be a square frame 1 or a rectangular frame 1. A first mounting member 102 with a threaded hole 101 is fixedly installed in one end face of the frame 1. Here, the threaded hole 101 can be directly opened on the first mounting member 102, or the threaded hole 101 can be fixed to an end face of the frame 1 through the first mounting member 102, for example, the threaded hole 101 is a nut. The counterweight block 2 is fixedly set inside the frame 1 to increase the weight of the frame 1 itself, which can ensure the stability of the frame 1 and also reduce the vibration generated during the drilling and coring process.

[0030] The counterweight 2 is positioned opposite the threaded hole 101 and has a recess 201 for accommodating the concrete specimen, extending toward the threaded hole 101. Furthermore, the fixing assembly 3 includes a screw 301 that passes through the threaded hole 101 and is threadedly connected to the threaded hole 101. A fixing plate 302 is mounted on the end of the screw 301 that extends into the frame 1. The fixing plate 302 is positioned opposite the recess 201 and has matching dimensions.

[0031] During the sampling process, the groove 201 of the counterweight 2 is first filled with the concrete specimen. Then, under the action of external force, the screw 301 rotates along the thread through the threaded hole 101 and extends toward the interior of the frame 1. Since the fixing plate 302 at one end of the screw 301 is arranged opposite to the groove 201 and has a matching size, when the screw 301 extends a certain distance into the interior of the frame 1, the fixing plate 302 will block the notch of the groove 201 and completely seal the concrete specimen in the groove 201. In this way, during the drilling and coring sampling process, even if the electric drill and the drill rotate very vigorously, the vibration of the concrete specimen can be greatly reduced, thereby improving the dimensional accuracy of the concrete specimen after the sampling is completed.

[0032] See also Figure 1 and Figure 2 As shown, Figure 2 For the embodiment of this application Figure 1Schematic diagram of the frame 1. In some embodiments, the threaded hole 101 is located at the geometric center of the end face of the frame 1. In this embodiment, first, the geometric center is the balance point of the end face of the frame 1, which can ensure uniform force distribution and avoid unnecessary stress concentration during connection or fixation, thereby enhancing the structural stability of the frame 1. In this embodiment, the threaded hole 101 is set at the geometric center of the end face of the frame 1 mainly to facilitate the rotation operation of the screw 301. It should be noted that since the end face of the frame 1 is a hollow structure, if you want to set the threaded hole 101 on the end face of the frame 1, you must use the first mounting member 102.

[0033] Continue to see Figure 2 As shown, in some embodiments, the first mounting member 102 is formed by cross-welding two stainless steel flat tubes, and the two stainless steel flat tubes are arranged diagonally relative to the end face, with a threaded hole 101 provided at the intersection. In this embodiment, firstly, the stainless steel flat tube is a stainless steel pipe with a unique shape. It has characteristics such as high strength, high temperature resistance, acid and alkali corrosion resistance, and easy processing. Therefore, the first mounting member 102 is formed by cross-welding two stainless steel flat tubes. While having these characteristics, it also ensures a secure connection between the flat tubes, improving the stability of the structure. In addition, the two stainless steel flat tubes are arranged diagonally relative to the end face, which can form a stable triangular structure on the end face of the frame 1. When the first mounting member 102 is impacted by external forces, it can promptly disperse stress, thereby increasing stability. In addition, a threaded hole 101 is provided at the intersection of the two stainless steel flat tubes. The threaded hole 101 can be a hole opened at the intersection of the two stainless steel flat tubes.

[0034] In some other embodiments, the threaded hole 101 may also be a nut, which is fixed at the intersection by two stainless steel flat tubes.

[0035] Reference Figure 1 and Figure 3 As shown, Figure 3 For the embodiment of this application Figure 1 Schematic diagram of the fixing assembly in the frame. In some embodiments, the fixing assembly 3 also includes a handle 303, and the handle 303 is fixed to the end of the screw 301. In this embodiment, the fixing assembly 3 also includes a handle 303. Since the fixing plate 302 is installed at one end of the screw 301 extending into the interior of the frame 1, the handle 303 can only be fixed to the other end of the screw 301, that is, the end of the screw 301 located outside the frame 1. By rotating the handle 303, the screw 301 can be driven through the threaded hole 101 and extend into the interior of the frame 1 for easy operation. It should be noted that the fixing plate 302 and the screw 301 can be an integrated structure or a detachable structure, for example: the two are threadedly connected.

[0036] Continue to refer to Figure 3In some embodiments, a circular groove 3021 is provided at the geometric center of the fixing plate 302, and the inner wall of the circular groove 3021 is provided with an internal thread. The end of the screw 301 is threadedly connected to the fixing plate 302. In this embodiment, during the coring process, since the fixing plate 302 often comes into contact with the concrete sample, the fixing plate 302 needs to be cleaned regularly, otherwise it will directly affect the accuracy of the concrete sample. Therefore, a circular groove 3021 can be provided at the geometric center of the fixing plate 302, and the inner wall of the circular groove 3021 is provided with an internal thread. The end of the screw 301 is an external thread that can be threadedly connected to the fixing plate 302, making it easy to remove the fixing plate 302 from the screw 301 for cleaning. Further, it should be noted that if you want to remove the fixing assembly 3 from the frame 1, you should first remove the fixing plate 302 from the screw 301, then rotate the handle 303 to extend the screw 301 outward, and then completely remove the fixing assembly 3 from the frame 1.

[0037] In some embodiments, the counterweight 2 is made of solid precast concrete with a concrete strength grade of C40. In this embodiment, "C40" refers to the concrete strength grade, specifically the standard value of the cubic compressive strength of concrete of 40 megapascals (MPa). Using solid precast concrete with a concrete strength grade of C40 as the material for the counterweight 2 offers advantages such as high compressive strength, crack resistance, and durability. It also improves its stability, reduces vibration during core drilling, and improves the accuracy of the concrete specimen dimensions.

[0038] Reference Figure 4 As shown, Figure 4 For the embodiment of this application Figure 1 Schematic diagram of the counterweight. In some embodiments, recess 201 is a cubic recess 201. In this embodiment, a cubic concrete specimen is one of the most commonly used specimen shapes in concrete strength testing, particularly for compressive strength testing. Specimens of this shape are more stable and maneuverable during measurement, and their original shape is not easily altered. For example, ordinary concrete compressive strength and frost resistance specimens are cube-shaped, typically measuring 15 cm x 15 cm x 15 cm.

[0039] Continue to refer to Figure 4 As shown, in some embodiments, the counterweight 2 further includes a plurality of second mounting members 202, which are evenly distributed on the upper surface of the counterweight 2. In this embodiment, the counterweight 2 further includes a plurality of second mounting members 202, which are used to fix the drilling sampler, and the plurality of second mounting members 202 are evenly distributed on the upper surface of the counterweight 2, which can balance the force and ensure that the drilling sampler is installed more stably and firmly.

[0040] Reference Figure 4As shown, in some embodiments, the second mounting member 202 is made of stainless steel. In this embodiment, since water is involved in the core sampling process, this material can reduce the degree of corrosion of the second mounting member 202 and increase the service life of the second mounting member 202.

[0041] Reference Figure 1 As shown, in some embodiments, the frame 1 is made of stainless steel. In this embodiment, since water is involved in the core sampling process, this material can reduce the degree of corrosion of the frame 1 and increase the service life of the frame 1.

[0042] In the embodiment, a first mounting member 102 with a threaded hole 101 is fixed in one end face of a rectangular frame 1, and a counterweight 2 is fixedly arranged inside the frame 1 at the opposite end of the threaded hole 101, and a screw 301 on the fixing assembly 3 is threadedly connected with the threaded hole 101. During the coring process, when a concrete specimen that meets the specifications is installed in the groove 201 of the counterweight 2, the screw 301 of the fixing assembly 3 passes through the threaded hole 101 at the opposite end of the groove 201 under the action of an external force and extends into the interior of the frame 1. Since a fixing plate 302 is installed at one end of the screw 301, and the fixing plate 302 is arranged opposite to the groove 201 and has matching dimensions, after the screw 301 extends a certain distance into the frame 1, the fixing plate 302 is tightly fastened to the groove 201, thereby securing the concrete specimen in the groove 201 to prevent it from being shaken loose or falling off. As a result, even when the electric drill and drill rotate violently during coring, the vibration of the concrete specimen can be significantly reduced, ensuring a regular appearance of the prepared concrete specimen and improving the dimensional accuracy of the specimen. This solves the technical problem in related art where the rotation of the electric drill and drill causes the concrete specimen to vibrate or tilt forward, resulting in irregular appearance and inaccurate dimensions.

[0043] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0044] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0045] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A fixing device for drilling and coring concrete specimens, characterized in that: include: A rectangular frame (1) has a first mounting member (102) with a threaded hole (101) fixed in one end surface thereof; A counterweight (2) is fixed in the frame (1) and is located at the opposite end of the threaded hole (101); the counterweight (2) is provided with a groove (201) for accommodating a concrete test piece in a direction toward the threaded hole (101); A fixing assembly (3) includes a screw (301) passing through the threaded hole (101), the screw (301) being threadedly connected to the threaded hole (101), and a fixing plate (302) being installed at one end of the screw (301) extending into the frame (1), the fixing plate (302) being arranged opposite to the groove (201) and having matching dimensions.

2. The fixing device for coring and sampling concrete specimens according to claim 1, characterized in that: The threaded hole (101) is located at the geometric center of the end surface of the frame (1).

3. The fixing device for coring and sampling concrete specimens according to claim 2, characterized in that: The first mounting member (102) is formed by cross-welding two stainless steel flat tubes, and the two stainless steel flat tubes are arranged diagonally relative to the end surface, and the threaded hole (101) is opened at the intersection.

4. The fixing device for coring and sampling concrete specimens according to claim 1, characterized in that: The fixing assembly (3) further comprises a handle (303), and the handle (303) is fixed to the end of the screw rod (301).

5. The fixing device for coring and sampling concrete specimens according to claim 4, characterized in that: A circular groove (3021) is provided at the geometric center of the fixing plate (302), an inner wall of the circular groove (3021) is provided with an internal thread, and the end of the screw rod (301) is threadedly connected to the fixing plate (302).

6. The fixing device for coring and sampling concrete specimens according to claim 1, characterized in that: The counterweight block (2) is solid precast concrete with a concrete strength grade of C40.

7. The fixing device for coring and sampling concrete specimens according to claim 1, characterized in that: The groove (201) is a cubic groove.

8. The fixing device for coring and sampling concrete specimens according to claim 1, characterized in that: The counterweight block (2) further comprises a plurality of second mounting members (202), and the plurality of second mounting members (202) are evenly distributed on the upper surface of the counterweight block (2).

9. The fixing device for coring and sampling concrete specimens according to claim 8, characterized in that: The second mounting member (202) is made of stainless steel.

10. The fixing device for coring and sampling concrete specimens according to claim 1, characterized in that: The frame (1) is made of stainless steel.

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