Concrete detection device for building construction

Abstract

The utility model relates to the technical field of concrete compressive strength detection, in particular to a concrete detection device for building construction, which comprises a rebound apparatus body, a bouncing rod is arranged in the rebound apparatus body, a fixing cylinder synchronously sliding with the bouncing rod is slidably arranged on the outer surface of the rebound apparatus, and the fixing cylinder is connected with the bouncing rod through a pressing assembly. The pressing assembly is used for being tightly attached to the elastic striking rod, so that the elastic striking rod drives the fixing cylinder to slide synchronously, and a sliding sealing assembly is arranged at the end, away from the pressing assembly, of the fixing cylinder. By arranging a fixing cylinder, a supporting block, a pressing assembly and a sliding sealing assembly, the inner wall of a flexible conical ring is tightly attached to an elastic rod, dust can be prevented from entering the rebound apparatus body through a gap between the elastic rod and the rebound apparatus body, the dust is effectively prevented from affecting the precision of the apparatus, and the detection result of the apparatus is ensured; and meanwhile, extra resistance is not applied when the rebound apparatus is pressed, so that the labor intensity of workers is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete compressive strength detection, in particular to a concrete detection device for building construction. Background Art

[0002] The concrete testing device for construction is a device used to detect and analyze the quality, strength, uniformity and structural integrity of concrete. The rebound hammer is a portable testing tool that is easy to operate and can be used for rapid on-site testing without the need for complex equipment or long preparations.

[0003] The rebound test hammer is a handheld testing tool used to measure the hardness of the concrete surface, thereby indirectly evaluating the strength of the concrete. The rebound test hammer drives a small hammer through a spring, causing it to hit the concrete surface with a certain energy, and then measures the height of the small hammer's rebound. For example, a 3.503 joule concrete rebound test hammer disclosed in Chinese Patent Publication No. CN114264563A. The rebound test hammer is widely used in the construction field to test the compressive strength of building materials such as concrete, mortar, and bricks.

[0004] However, the rebound hammer is generally operated by hand-held pressure. In order to ensure the measurement accuracy, it is necessary to keep the impact rod perpendicular to the wall as much as possible. However, in actual operation, it is difficult to control the vertical state of the impact rod and the wall by hand-held.

[0005] The solution of the prior art is a rebound hammer for supervision disclosed in Chinese patent publication No. CN217505525U. During measurement, the ring plate of the rebound hammer is supported on the wall surface by a rubber pad, so that the impact rod of the rebound hammer body can be suspended in a state of being placed vertically on the wall surface and in contact with the wall surface. Since the impact rod of the rebound hammer body is placed vertically on the wall surface, the accuracy of the measurement can be guaranteed.

[0006] However, compared with the existing technology in the related field, the added elastic parts will increase the resistance of the rebound hammer when pressed, so that the labor intensity of the staff is relatively high when large-area testing is carried out. The on-site environment when using the rebound hammer to test the strength of materials such as concrete, mortar, and bricks is poor, and dust will also be generated during the testing process. The dust enters the instrument through the gaps in the instrument, or adheres to the gap between the impact rod and the display end, which will affect the accuracy of the instrument and cause deviations in the test results. Utility Model Content

[0007] The purpose of the utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background technology, and provide a concrete detection device for building construction.

[0008] The purpose of the utility model is achieved through the following technical solutions: a concrete detection device for construction, including a rebound test hammer body, a striking rod is arranged inside the rebound test hammer body, a fixed cylinder is slidably arranged on the outer surface of the rebound test hammer body and slides synchronously with the striking rod, the fixed cylinder is connected to the striking rod through a clamping assembly, the clamping assembly is used to fit tightly with the striking rod, so that the striking rod drives the fixed cylinder to slide synchronously, a sliding sealing assembly is provided at one end of the fixed cylinder away from the clamping assembly, and the sliding sealing assembly is used to close the gap between the opening of the fixed cylinder and the outer surface of the rebound test hammer body.

[0009] Preferably, the clamping assembly includes a threaded groove opened at the end of the fixed cylinder, a flexible tapered ring is fixed inside the threaded groove, a threaded sleeve is connected to the internal thread of the threaded groove, and a conical surface matching the flexible tapered ring is formed inside the threaded sleeve.

[0010] Preferably, a plug hole is provided in the fixed tube at a position corresponding to the impact rod, and the diameter of the plug hole is larger than the diameter of the impact rod.

[0011] Preferably, the inner diameter of the flexible conical ring before deformation is larger than the diameter of the impact rod. When the threaded sleeve is screwed into the threaded groove, the flexible conical ring is deformed by the squeezing of the conical surface of the threaded sleeve, so that the inner wall of the flexible conical ring fits tightly against the impact rod. A turning knob is fixed at the end of the threaded sleeve.

[0012] Preferably, a plurality of support blocks are fixedly provided on one end of the fixing tube close to the impact rod, and the ends of the plurality of support blocks are flush with the end of the impact rod.

[0013] Preferably, the sliding sealing assembly includes an annular member fixedly mounted on the fixed cylinder, a plurality of sealing rings are fixedly provided on the inner wall of the annular member, a sponge is fixedly provided on the side of the inner wall of the annular member away from the fixed cylinder, and the interior of the sponge is filled with lubricant.

[0014] Preferably, the fixing cylinder, the threaded sleeve, the knob, the support block and the annular member are all made of polycarbonate, and the flexible conical ring and the annular member are all made of rubber.

[0015] Beneficial effects:

[0016] The concrete detection device for building construction is provided with a fixed cylinder, a support block, a clamping assembly and a sliding sealing assembly. Firstly, a plurality of support blocks are used to press against a concrete wall or a concrete floor, so that the impact rod of the rebound tester body can be perpendicular to the concrete wall or the concrete floor, thereby ensuring the accuracy during detection. Secondly, the inner wall of the flexible conical ring is tightly fitted with the impact rod, thereby preventing dust from entering the interior of the rebound tester body through the gap between the impact rod and the rebound tester body. Sponge and a plurality of sealing rings can be used to prevent dust from entering the interior of the fixed cylinder, further improving the dustproof effect of the equipment, making the instrument applicable to a variety of working environments, effectively preventing dust from affecting the accuracy of the instrument, and ensuring the detection result of the instrument. Thirdly, the impact rod can drive the fixed cylinder to slide synchronously, so that the fixed cylinder will not apply additional resistance when pressing the rebound tester while blocking dust, effectively reducing the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the state when the impact rod of the utility model is not retracted into the inside of the rebound tester body;

[0019] Figure 2 It is a schematic diagram of the state when the impact rod of the utility model is retracted into the inside of the rebound tester body;

[0020] Figure 3 It is a schematic diagram of the disassembled structure of the fixed cylinder and the rebound tester body of the utility model;

[0021] Figure 4 This is a schematic diagram of the first axial side of the fixed cylinder of the utility model;

[0022] Figure 5 It is a schematic diagram of the second axis side of the fixed cylinder of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the sliding seal assembly of the utility model;

[0024] Figure 7 It is a schematic diagram of the internal structure of the fixed cylinder of the utility model.

[0025] In the figure: 1. Rebound tester body; 2. Rebound rod; 3. Fixed cylinder; 301. Socket; 302. Support block; 4. Clamping assembly; 401. Threaded groove; 402. Flexible conical ring; 403. Threaded sleeve; 4031. Turning knob; 5. Sliding sealing assembly; 501. Ring; 502. Sealing ring; 503. Sponge. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0027] Additional aspects and advantages of the present invention will be further described below in conjunction with the accompanying drawings, and some will become apparent from the following description or be learned through practice of the present invention.

[0028] like Figures 1 to 7 As shown, a concrete detection device for construction includes a rebound tester body 1, an impact rod 2 is arranged inside the rebound tester body 1, a fixed cylinder 3 which slides synchronously with the impact rod 2 is slidably arranged on the outer surface of the rebound tester body 1, the fixed cylinder 3 is connected to the impact rod 2 through a clamping assembly 4, the clamping assembly 4 is used to fit tightly with the impact rod 2, so that the impact rod 2 drives the fixed cylinder 3 to slide synchronously, a sliding sealing assembly 5 is arranged at one end of the fixed cylinder 3 away from the clamping assembly 4, the sliding sealing assembly 5 is used to close the gap between the opening of the fixed cylinder 3 and the outer surface of the rebound tester body 1, a plurality of support blocks 302 are fixedly arranged at one end of the fixed cylinder 3 close to the impact rod 2, the ends of the plurality of support blocks 302 are all flush with the ends of the impact rod 2, and the plurality of support blocks 302 are pressed against the concrete wall or concrete floor, so that the impact rod 2 of the rebound tester body 1 can be in a state perpendicular to the concrete wall or concrete floor, thereby ensuring the accuracy during detection.

[0029] like Figure 4 and Figure 7 As shown, the clamping assembly 4 includes a threaded groove 401 opened at the end of the fixed cylinder 3, a flexible conical ring 402 is fixedly provided inside the threaded groove 401, a threaded sleeve 403 is connected to the internal thread of the threaded groove 401, and a conical surface matching the flexible conical ring 402 is formed inside the threaded sleeve 403. A plug hole 301 is opened at the position of the fixed cylinder 3 corresponding to the impact rod 2, and the diameter of the plug hole 301 is larger than the diameter of the impact rod 2. The inner diameter of the flexible conical ring 402 before deformation is larger than the diameter of the impact rod 2, as shown in FIG. Figure 4 and Figure 7 As shown, when the threaded sleeve 403 is screwed into the threaded groove 401, the flexible conical ring 402 is deformed by the squeezing of the conical surface of the threaded sleeve 403, so that the inner wall of the flexible conical ring 402 fits tightly with the impact rod 2, and a knob 4031 is fixedly provided at the end of the threaded sleeve 403. The threaded sleeve 403 is screwed into the threaded groove 401, so that the flexible conical ring 402 is deformed by the squeezing of the conical surface of the threaded sleeve 403, so that the inner wall of the flexible conical ring 402 fits tightly with the impact rod 2, thereby preventing dust from entering the interior of the rebound tester body 1 through the gap between the impact rod 2 and the rebound tester body 1, and effectively preventing dust from affecting the accuracy of the instrument.

[0030] like Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, the sliding seal assembly 5 includes an annular member 501 fixedly mounted on the fixed cylinder 3, a plurality of sealing rings 502 are fixedly provided on the inner wall of the annular member 501, a sponge 503 is fixedly provided on the side of the inner wall of the annular member 501 away from the fixed cylinder 3, the interior of the sponge 503 is filled with a lubricant, when the fixed cylinder 3 slides, the lubricant filled in the sponge 503 can be applied to the surface of the rebound tester body 1, thereby reducing the friction between the plurality of sealing rings 502 and the rebound tester body 1, and by providing the sponge 503 and the plurality of sealing rings 502, dust can be prevented from entering the interior of the fixed cylinder 3, further improving the dustproof effect of the equipment, so that the device can be suitable for a variety of working environments.

[0031] As a preferred technical solution of the utility model, the fixed cylinder 3, the threaded sleeve 403, the knob 4031, the support block 302 and the ring member 501 are all made of polycarbonate. The fixed cylinder 3, the threaded sleeve 403, the knob 4031, the support block 302 and the ring member 501 made of polycarbonate can reduce their overall weight and facilitate continuous operation by the staff. The flexible conical ring 402 and the ring member 501 are all made of rubber. The flexible conical ring 402 and the ring member 501 are made of rubber, and the inner wall of the flexible conical ring 402 is tightly fitted with the impact rod 2, so that the impact rod 2 can drive the fixed cylinder 3 to slide synchronously, so that the fixed cylinder 3 can block dust while not applying additional resistance when pressing the rebound tester, effectively reducing the labor intensity of the staff.

[0032] The working process is as follows:

[0033] S1, such as Figure 1 and Figure 2 As shown, when in use, the plurality of support blocks 302 are pressed against the concrete wall or concrete floor, so that the impact rod 2 of the rebound test body 1 can be placed in a state perpendicular to the concrete wall or concrete floor, thereby ensuring the accuracy of the detection;

[0034] S2, such as Figure 1 and Figure 2 As shown, during the test, the rebound hammer body 1 is pushed so that the impact rod 2 is gradually retracted into the rebound hammer body 1, as shown in FIG. Figure 4 As shown, at this time, the inner wall of the flexible conical ring 402 is closely fitted with the impact rod 2, so that the impact rod 2 can drive the fixed cylinder 3 to slide synchronously, so that the fixed cylinder 3 will not apply additional resistance when pressing the rebound tester while blocking dust, effectively reducing the labor intensity of the staff;

[0035] S3, such as Figure 4 and Figure 7 As shown, the threaded sleeve 403 is screwed into the threaded groove 401, so that the flexible conical ring 402 is squeezed by the conical surface of the threaded sleeve 403 and deformed, so that the inner wall of the flexible conical ring 402 is closely fitted with the impact rod 2, thereby preventing dust from entering the inside of the rebound test body 1 through the gap between the impact rod 2 and the rebound test body 1, and effectively preventing dust from affecting the accuracy of the instrument;

[0036] S4, such as Figure 7 As shown, when the fixed cylinder 3 slides, the lubricant filled in the sponge 503 can be applied to the surface of the rebound test body 1, thereby reducing the friction between the multiple sealing rings 502 and the rebound test body;

[0037] S5, such as Figures 5 to 7 As shown, by providing a sponge 503 and a plurality of sealing rings 502, dust can be prevented from entering the interior of the fixed tube 3, further improving the dustproof effect of the device, so that the device can be applied to a variety of working environments;

[0038] S6, such as Figure 2 and Figure 3 As shown, after use, the knob 4031 can be rotated in the reverse direction to disengage the threaded sleeve 403 from the threaded groove 401. At this time, the flexible conical ring 402 is no longer tightly fitted with the impact rod 2, and then the fixed tube 3 can be separated from the rebound tester body 1.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A concrete detection device for construction, characterized in that: The invention comprises a rebound tester body (1), wherein a rebound tester body (1) is provided with a striking rod (2) inside, and a fixed cylinder (3) slidingly provided on the outer surface of the rebound tester body (1) and sliding synchronously with the striking rod (2), wherein the fixed cylinder (3) is connected to the striking rod (2) via a clamping assembly (4), wherein the clamping assembly (4) is used to fit tightly with the striking rod (2), so that the striking rod (2) drives the fixed cylinder (3) to slide synchronously, and a sliding sealing assembly (5) is provided at one end of the fixed cylinder (3) away from the clamping assembly (4), wherein the sliding sealing assembly (5) is used to close the gap between the opening of the fixed cylinder (3) and the outer surface of the rebound tester body (1).

2. A concrete detection device for construction according to claim 1, characterized in that: The clamping assembly (4) comprises a threaded groove (401) formed at the end of the fixing cylinder (3), a flexible tapered ring (402) being fixedly provided inside the threaded groove (401), a threaded sleeve (403) being connected to the internal thread of the threaded groove (401), and a conical surface matching the flexible tapered ring (402) being formed inside the threaded sleeve (403).

3. A concrete detection device for construction according to claim 2, characterized in that: The fixing tube (3) is provided with an insertion hole (301) at a position corresponding to the impact rod (2), and the diameter of the insertion hole (301) is larger than the diameter of the impact rod (2).

4. A concrete detection device for construction according to claim 3, characterized in that: The inner diameter of the flexible conical ring (402) before deformation is greater than the diameter of the impact rod (2). When the threaded sleeve (403) is screwed into the threaded groove (401), the flexible conical ring (402) is deformed by the compression of the conical surface of the threaded sleeve (403), so that the inner wall of the flexible conical ring (402) fits tightly against the impact rod (2). A knob (4031) is fixedly provided at the end of the threaded sleeve (403).

5. A concrete detection device for construction according to claim 4, characterized in that: A plurality of support blocks (302) are fixedly provided at one end of the fixed tube (3) close to the impact rod (2), and the ends of the plurality of support blocks (302) are all flush with the end of the impact rod (2).

6. A concrete detection device for construction according to claim 5, characterized in that: The sliding seal assembly (5) comprises an annular member (501) fixedly mounted on the fixed cylinder (3); a plurality of sealing rings (502) are fixedly provided on the inner wall of the annular member (501); a sponge (503) is fixedly provided on a side of the inner wall of the annular member (501) away from the fixed cylinder (3); and a lubricant is filled inside the sponge (503).

7. A concrete detection device for construction according to claim 6, characterized in that: The fixing cylinder (3), the threaded sleeve (403), the turning knob (4031), the supporting block (302) and the annular member (501) are all made of polycarbonate, and the flexible conical ring (402) and the annular member (501) are all made of rubber.

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