CN218766315U - Concrete compressive strength detects uses resiliometer - Google Patents

Abstract

The utility model discloses a rebound hammer for testing the compressive strength of concrete, which comprises a rebound hammer main body and a digital display control box. The bottom end of the rebound hammer main body is fixedly connected with a rubber push seat. The rebound tester for testing the compressive strength of concrete can assemble the bonding disk on the bullet rod by screwing the stud at the bottom of the bonding disk to the inside of the screw hole. When testing, hold the rubber pusher with both hands The seat and the handle are pressed, and the fitting disc can be better fitted to the surface to be tested, ensuring the verticality of the bullet rod and the tested surface. After use, the fitting disc can be rotated to make the stud from the inside of the screw hole After exiting, the bonding plate can be removed, so that the bonding plate can be disassembled flexibly, which is convenient for storage and carrying of the rebound hammer. The solution is that the setting of the bonding plate and the telescopic component will greatly increase the volume of the rebound hammer, and it is inconvenient Disassembly and assembly have brought great inconvenience to the storage and carrying of the hammer.

Description

A rebound tester for testing the compressive strength of concrete

technical field

The utility model relates to the technical field of concrete compressive strength detection, in particular to a rebound hammer for concrete compressive strength detection.

Background technique

Concrete compressive strength is the main index to evaluate the quality of concrete. By measuring the concrete compressive strength to determine the strength grade of concrete, the rebound method to detect the concrete compressive strength has the advantages of no damage to the structure, easy operation and low detection cost. Application extremely broad.

According to the application number CN202120210537.6, a portable rebound hammer for detecting the compressive strength of concrete includes a rebound hammer body and a bracket for installing on the rebound hammer body. A positioning component whose axis is perpendicular to the concrete test surface and a fixed component that is convenient for personnel to take. The positioning component includes a clamping sleeve fixed at the front end of the hammer body, telescopic components arranged at both ends of the clamping sleeve and mounted on the telescopic component. stickers. The first handle in the device is located at the tail of the hammer body and has a U-shaped structure, which is convenient for personnel to push the hammer body forward, and the second handle is located at the lower end of the hammer body, which is convenient for personnel to support by hand. It is conducive to the alignment of the hammer body and is convenient for personnel to operate. The sticky plate is attached to the test surface so that the impact bar is perpendicular to the test surface, thereby improving the accuracy of measurement.

However, the above-mentioned portable rebound rebound tester for concrete compressive strength detection still has the following problems and defects:

1. The setting of the mounting plate and the telescopic component will greatly increase the volume of the rebound hammer, and it is inconvenient to disassemble and assemble, which brings great inconvenience to the storage and carrying of the rebound hammer;

2. In the process of rebound and contraction, the ejection rod will be subject to a certain sliding friction resistance, which will affect the accuracy of detection;

3. The test results need to be read one by one, lack of obvious indication function, and prone to reading errors.

Utility model content

The purpose of this utility model is to provide a rebound hammer for concrete compressive strength detection, to solve the problem that the setting of the plate and the telescopic assembly proposed in the above background technology will greatly increase the volume of the rebound hammer, and it is inconvenient to disassemble and assemble. The storage and carrying of the rebound hammer has brought great inconvenience.

In order to achieve the above purpose, the utility model provides the following technical solutions: a rebound hammer for testing the compressive strength of concrete, comprising a rebound hammer main body and a digital display control box, the bottom end of the rebound hammer main body is fixedly connected with a rubber pusher Seat, the top outside the main body of the rebound hammer is fixedly connected with a handle, the top and bottom ends of the digital display control box are respectively welded and fixed with fixed pieces, and the digital display control box is fixed and installed on the rebound hammer through the fixed pieces The front end of the main body, the top of the hammer main body is provided with a bullet hammer, the top of the bullet hammer is fixedly connected with a connector, the center of the top of the connector is provided with a screw hole, the connector of the connector A fitting disc is arranged on the top, and a stud is fixedly connected to the center of the bottom end of the fitting disc.

Preferably, the screw hole cooperates with a stud, and the stud is screwed inside the screw hole.

Preferably, the top of the main body of the rebound hammer is fixedly connected with a telescopic guide cylinder, the bullet striker runs through the interior of the telescopic guide cylinder, and a movable groove is opened on the inner side wall of the telescopic guide cylinder, and the inside of the movable groove Embedded with steel balls.

Preferably, multiple groups of movable grooves are evenly arranged on the inner wall of the telescopic guide cylinder.

Preferably, the steel ball is rollingly connected inside the movable groove.

Preferably, the top of the front end of the digital display control box is provided with a display screen, the bottom end of the display screen is provided with manipulation buttons, the bottom end of the manipulation buttons is provided with a buzzer, and one of the digital display control boxes The side is fixedly connected with an indicator light.

Preferably, a circuit main board is fixedly installed inside the digital display control box, and the control buttons, buzzer, indicator light and display screen are respectively electrically connected to the circuit main board through wires.

Compared with the prior art, the utility model has the beneficial effects that: the rebound tester for concrete compressive strength detection not only realizes the flexible disassembly and assembly of the bonding plate, but also facilitates the storage and carrying of the rebound tester, and greatly reduces the impact of the impact. The friction resistance of the rod during the process of rebound and shrinkage improves the accuracy of detection, and realizes that the detection results can be pre-indicated and reminded, reducing the possibility of reading errors;

(1) By providing a fitting disc, a connector, a screw hole and a stud, when in use, the stud at the bottom of the fitting disc is screwed into the screw hole, and the fitting disc can be assembled on the ejection rod First, when testing, hold the rubber push seat and the grip with both hands to perform pressing operations. The bonding plate can better fit the surface to be tested, ensuring the verticality of the bullet rod and the surface to be tested. After use, it can Rotate the fitting plate to make the stud withdraw from the screw hole, and then the fitting plate can be removed, so that the fitting plate can be disassembled flexibly, which is convenient for storage and carrying of the rebound hammer;

(2) By setting the telescopic guide tube, the steel ball and the movable groove, when in use, during the process of rebounding and shrinking, the bullet rod can drive the steel ball to roll in the movable groove due to the support of the steel ball, thus the bullet The sliding friction of the rod is converted into rolling friction, which greatly reduces the frictional resistance of the ejection rod in the process of rebound and shrinkage, and improves the accuracy of detection;

(3) By setting the control buttons, buzzer, indicator light and display screen, the detection data of concrete compressive strength can be read through the display screen during use. Before reading, if the detected concrete compressive strength is unqualified , the circuit board inside the digital display control box will start the buzzer and the indicator light at the same time, and the buzzer and the indicator light will be used to indicate and remind in advance. If the tested concrete compressive strength is qualified, the buzzer and the indicator light will not start , can be read directly through the display screen, so that the test results can be pre-indicated and reminded, reducing the possibility of reading errors.

Description of drawings

Fig. 1 is the front view sectional structure schematic diagram of the utility model;

Fig. 2 is the schematic diagram of enlarged structure at A place in Fig. 1 of the present utility model;

Fig. 3 is a schematic diagram of the zoomed-in structure of the telescopic guide cylinder of the utility model in a top view section;

Fig. 4 is a front view enlarged structural schematic diagram of the digital display control box of the present invention.

In the figure: 1. The main body of the rebound hammer; 2. The rubber push seat; 3. The digital display control box; 4. The fixed piece; 5. The telescopic guide cylinder; ;9, steel ball; 10, movable groove; 11, connector; 12, screw hole; 13, stud; 14, control button; 15, buzzer; 16, indicator light;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Embodiment 1: Please refer to Figures 1-4, a rebound hammer for testing the compressive strength of concrete, including a rebound hammer main body 1 and a digital display control box 3, and the bottom end of the rebound hammer main body 1 is fixedly connected with a rubber push seat 2. The top outside the hammer main body 1 is fixedly connected with a grip 8, and the top and bottom ends of the digital display control box 3 are respectively welded and fixed with a fixed piece 4, and the digital display control box 3 is fixedly installed on the rebound hammer through the fixed piece 4 The front end of the main body 1, the top of the hammer main body 1 is provided with a bullet hammer 7, the top of the bullet hammer 7 is fixedly connected with a connector 11, and the center position of the top of the connector 11 is provided with a screw hole 12, and the connector 11 The top is provided with a fitting disk 6, and the center position of the bottom end of the fitting disk 6 is fixedly connected with a stud 13, the screw hole 12 cooperates with the stud 13, and the stud 13 is screwed into the inside of the screw hole 12;

Specifically, as shown in Fig. 1 and Fig. 2, the stud 13 at the bottom of the bonding disc 6 is screwed into the inside of the screw hole 12, so that the bonding disc 6 can be assembled on the snap rod 7, and during detection, Hold the rubber push seat 2 and the grip 8 with both hands to perform pressing operations, and the bonding disc 6 can be better fitted to the surface to be detected, ensuring the perpendicularity of the ejection rod 7 to the surface to be detected, and can be rotated after use. Combine the plate 6, make the stud 13 withdraw from the inside of the screw hole 12, and then the bonding plate 6 can be removed.

Embodiment 2: The top of the hammer main body 1 is fixedly connected with a telescopic guide cylinder 5, and the ejection rod 7 runs through the interior of the telescopic guide cylinder 5, and the inner side wall of the telescopic guide cylinder 5 is provided with a movable groove 10, and the inside of the movable groove 10 is Embedded with steel balls 9, multiple sets of movable grooves 10 on the inner wall of the telescopic guide cylinder 5 are uniformly arranged, and the steel balls 9 are rollingly connected inside the movable grooves 10;

Specifically, as shown in Figures 1 and 3, during the process of rebounding and shrinking, the impact rod 7 can drive the steel ball 9 to roll inside the movable groove 10 due to the support of the steel ball 9, so that the impact force of the impact rod 7 The sliding friction experienced is converted into rolling friction.

Embodiment 3: the top of the front end of the digital display control box 3 is provided with a display screen 17, the bottom end of the display screen 17 is provided with a control button 14, and the bottom end of the control button 14 is provided with a buzzer 15, and a part of the digital display control box 3 The side is fixedly connected with an indicator light 16, and the interior of the digital display control box 3 is fixedly installed with a circuit board, and the control buttons 14, buzzer 15, indicator light 16 and display screen 17 are electrically connected to the circuit board through wires respectively;

Specifically, as shown in Figures 1 and 4, the detection data of the concrete compressive strength is read through the display screen 17. Before reading, if the detected concrete compressive strength is unqualified, the circuit board inside the digital display control box 3 The buzzer 15 and the indicator light 16 will be started at the same time, and the buzzer 15 and the indicator light 16 will be used to indicate and remind in advance. If the detected concrete compressive strength is qualified, the buzzer 15 and the indicator light 16 will not start. The display screen 17 is read directly.

Working principle: When the utility model is in use, screw the stud 13 at the bottom of the fitting disc 6 to the inside of the screw hole 12, then the fitting disc 6 can be assembled on the ejection rod 7. When testing, separate the two hands Hold the rubber push seat 2 and the grip 8 for pressing operation, and the bonding disc 6 can be better fitted to the surface to be tested, ensuring the perpendicularity of the bullet dry 7 to the surface to be tested, and the bullet dry 7 is rebounding In the process of contraction and contraction, due to the support of the steel ball 9, the steel ball 9 can be driven to roll inside the movable groove 10, thereby converting the sliding friction on the bullet rod 7 into rolling friction, and the concrete compression resistance can be read through the display screen 17. For the detection data of strength, before reading, if the concrete compressive strength of detection is unqualified, the circuit board inside the digital display control box 3 will start the buzzer 15 and the indicator light 16 simultaneously, through the buzzer 15 and the indicator light 16 Carry out advance instruction and remind, if the concrete compressive strength of detection is qualified then buzzer 15 and indicator light 16 can not start, can directly read by display screen 17, can rotate pasting plate 6 after use, make stud 13 from When the screw hole 12 exits inside, the lamination plate 6 can be removed. The lamination plate 6 for the rebound tester for concrete compressive strength testing can be disassembled flexibly, which is convenient for the storage and carrying of the rebound tester, and greatly reduces the impact of the bullet hammer 7. The friction resistance encountered in the process of rebound and shrinkage improves the accuracy of detection, and at the same time, the detection results can indicate reminders in advance to reduce the possibility of reading errors.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. The utility model provides a concrete compressive strength detects uses resiliometer, includes resiliometer main part (1) and digital display control box (3), its characterized in that: the bottom fixedly connected with rubber of resiliometer main part (1) pushes away seat (2), the outside top fixedly connected with handle (8) of resiliometer main part (1), the top and the bottom of digital display control box (3) are welded fastening respectively have stationary blade (4), digital display control box (3) are through stationary blade (4) fixed mounting at the front end of resiliometer main part (1), the top of resiliometer main part (1) is provided with impact rod (7), the top fixedly connected with connector (11) of impact rod (7), the central point on connector (11) top puts the department and is provided with screw (12), the top of connector (11) is provided with laminating dish (6), the central point of laminating dish (6) bottom puts fixedly connected with double-screw bolt (13).

2. The rebound apparatus for detecting the compressive strength of concrete according to claim 1, wherein: the screw hole (12) is matched with the stud (13), and the stud (13) is screwed in the screw hole (12).

3. The resiliometer for detecting concrete compressive strength according to claim 1, characterized in that: the top fixedly connected with flexible guide cylinder (5) of resiliometer main part (1), the inside of flexible guide cylinder (5) is run through in impact rod (7), movable groove (10) have been seted up on the inside wall of flexible guide cylinder (5), the inside embedding in movable groove (10) has steel ball (9).

4. The rebound apparatus for detecting the compressive strength of concrete according to claim 3, wherein: a plurality of groups of movable grooves (10) are uniformly arranged on the inner side wall of the telescopic guide cylinder (5).

5. The rebound apparatus for detecting the compressive strength of concrete according to claim 3, wherein: the steel balls (9) are connected inside the movable groove (10) in a rolling mode.

6. The rebound apparatus for detecting the compressive strength of concrete according to claim 1, wherein: the top of digital display control box (3) front end is provided with display screen (17), the bottom of display screen (17) is provided with controls button (14), the bottom of controlling button (14) is provided with bee calling organ (15), one side fixedly connected with pilot lamp (16) of digital display control box (3).

7. The resiliometer for detecting compressive strength of concrete according to claim 6, wherein: the inside fixed mounting of digital display control box (3) has the circuit mainboard, control button (14), bee calling organ (15), pilot lamp (16) and display screen (17) respectively through wire and circuit mainboard electric connection.

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