Concrete hardness detection device for house safety appraisal

Abstract

The utility model discloses a concrete hardness detection device for house safety appraisal, and relates to the technical field of building detection, the concrete hardness detection device comprises a tripod and a rebound apparatus arranged on the tripod, and the tripod is provided with a trigger piece used for controlling the rebound apparatus to work and a connecting piece used for connecting the tripod and the rebound apparatus. According to the utility model, by utilizing the connecting piece and the triggering piece, the rebound apparatus is mounted on the tripod instead of being held by hand, and the pressing mode is changed from being manually pressed into matching of the half-gear-shaped triggering gear driven by the motor, the tooth groove plate and the return spring, so that automatic pressing is realized, and the working intensity of an operator is reduced to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of building detection, in particular to a concrete hardness detection device for housing safety appraisal. Background Technique

[0002] There are many methods for on-site detection of concrete strength, such as core drilling method, pull-out method, indentation method, shooting method, rebound method, ultrasonic method, combined ultrasonic-rebound method, combined ultrasonic attenuation method, ray method, falling ball method, etc. Among them, the rebound method and the combined ultrasonic-rebound method are the most widely used non-destructive testing methods. When using the rebound method for detection, a rebound instrument is used. The basic principle of the rebound instrument is to drive a heavy hammer with a spring. The heavy hammer impacts the impact rod that is vertically in contact with the concrete surface with a constant kinetic energy, causing local concrete to deform and absorb part of the energy, and the other part of the energy is converted into the rebound kinetic energy of the heavy hammer. When the rebound kinetic energy is all converted into potential energy, the heavy hammer rebounds to the maximum distance, and the instrument displays the maximum rebound distance of the heavy hammer in the name of the rebound value (the ratio of the maximum rebound distance to the initial length of the spring).

[0003] When using a rebound instrument to detect the hardness of concrete, there are usually multiple set test areas during the detection. At least 16 test points evenly distributed need to be detected in each test area. The staff needs to hold a single rebound instrument and continuously change positions on the concrete surface to be detected for at least 16 pressing detections. The work intensity of the staff is relatively large, and the rebound instrument needs to be kept vertical during use. It is easy to cause incorrect detection results in the later stage of multi-point detection. Content of the Utility Model

[0004] The purpose of the utility model is to provide a concrete hardness detection device for housing safety appraisal to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A concrete hardness detection device for housing safety appraisal includes a tripod and a rebound instrument arranged on the tripod. A trigger for controlling the operation of the rebound instrument and a connecting member for connecting the tripod and the rebound instrument are arranged on the tripod.

[0007] As a further description of the above technical scheme:

[0008] The connecting member includes two clamping rings sleeved outside the housing of the rebound instrument. A connecting plate is arranged between the two clamping rings. The top openings of the two clamping rings are both connected by bolt 1.

[0009] As a further description of the above technical scheme:

[0010] The trigger member includes a support plate provided at the top end of the tripod and a trigger gear rotatably provided on the top surface of the support plate. A plug table is slidably provided on the top surface of the support plate. A slot for cooperating with two clamping rings is provided at the top of the plug table. A second bolt for fixing the two clamping rings is inserted outside the plug table. A toothed groove plate is provided on one side of the plug table. A plurality of toothed grooves for cooperating with the trigger gear are provided on the outer surface of the toothed groove plate. A trigger motor for controlling the rotation of the trigger gear is installed on the bottom surface of the support plate. The trigger gear is a semi-gear.

[0011] As a further description of the above technical solution:

[0012] A chute is provided at the bottom of the plug table, and a T-shaped guide block cooperating with the chute is provided on the top surface of the support plate. A return spring is connected between the chute and the guide block.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0014] In the present utility model, by using the connecting member and the trigger member, the rebound instrument is changed from being held by hand to being installed on the tripod, and the pressing method is also changed from manual to the cooperation of a semi-gear-shaped trigger gear driven by a motor with the toothed groove plate and the return spring to achieve automatic pressing, which reduces the working intensity of the operator to a certain extent. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall external structure of the present utility model;

[0016] Figure 2 is an exploded view of the present utility model;

[0017] Figure 3 is a cross-sectional view of the plug table in the present utility model.

[0018] Legend: 1, tripod; 2, rebound instrument; 3, clamping ring; 4, connecting plate; 5, first bolt; 6, plug table; 7, slot; 8, second bolt; 9, support plate; 10, guide block; 11, trigger gear; 12, toothed groove plate; 13, return spring. Specific Embodiments

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment 1:

[0021] Such as Figures 1-3As shown in the figure, it includes a tripod 1 and a rebound hammer 2 provided on the tripod 1. The tripod 1 is provided with a trigger member for controlling the operation of the rebound hammer 2 and a connecting member for connecting the tripod 1 and the rebound hammer 2. By using the connecting member and the trigger member, the rebound hammer 2 is changed from being held by hand to being installed on the tripod 1, and the pressing method is also changed from manual to the cooperation of a semi-gear-shaped trigger gear 11, a tooth groove plate 12 and a return spring 13 driven by a trigger motor, realizing automatic pressing, which reduces the working intensity of the operator to a certain extent.

[0022] Embodiment 2:

[0023] It is basically the same as the technical solution of Embodiment 1, the difference is that, as Figure 2 , Figure 3 shown in the figure, the connecting member includes two clamping rings 3 sleeved outside the housing of the rebound hammer 2. A connecting plate 4 is provided between the two clamping rings 3. The top openings of the two clamping rings 3 are both connected by bolts 1 5. The trigger member includes a support plate 9 provided at the top end of the tripod 1 and a trigger gear 11 rotatably provided on the top surface of the support plate 9. A plug table 6 is slidably provided on the top surface of the support plate 9. A slot 7 for cooperating with the two clamping rings 3 is opened at the top of the plug table 6. A bolt 2 8 for fixing the two clamping rings 3 is inserted outside the plug table 6. A tooth groove plate 12 is provided on one side of the plug table 6. A plurality of tooth grooves for cooperating with the trigger gear 11 are opened on the outer surface of the tooth groove plate 12. A trigger motor for controlling the rotation of the trigger gear 11 is installed on the bottom surface of the support plate 9. The trigger gear 11 is a semi-gear. The semi-gear-shaped trigger gear 11 ensures that the rebound hammer 2 will not be continuously pressed, which is beneficial to the continuous progress of the detection. A chute is opened at the bottom of the plug table 6. A T-shaped guide block 10 for cooperating with the chute is provided on the top surface of the support plate 9. A return spring 13 is connected between the chute and the guide block 10. The return spring 13 is used to facilitate the reset of the rebound hammer 2 after the detection is completed.

[0024] Working principle: When using this device to detect the hardness of concrete, first, the two clamping rings 3 are sleeved outside the rebound hammer 2, and the position of the opening is fixed with bolts 1 5. Then, the bottom of the clamping rings 3 is inserted into the slot 7 of the plug table 6, and the bottom of the clamping rings 3 is fixed in the slot 7 with bolts 2 8. Then, the device is placed on the ground at the position to be detected, and the detection head of the rebound hammer 2 is directed at the point to be detected. The trigger motor is started to drive the trigger gear 11 to rotate, and then drive the tooth groove plate 12 to move, and further drive the detection head of the rebound hammer 2 connected to the clamping member to retract into the rebound hammer 2. When the smooth surface of the trigger gear 11 rotates to one side of the tooth groove of the tooth groove plate 12, under the action of the return spring 13 and the return elastic force of the rebound hammer 2 itself, the rebound hammer 2 is reset for the next detection.

[0025] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A concrete hardness testing device for housing safety assessment, comprising a tripod (1) and a rebound hammer (2) arranged on the tripod (1), characterized in that: The tripod (1) is provided with a triggering member for controlling the operation of the rebound tester (2) and a connecting member for connecting the tripod (1) and the rebound tester (2), the connecting member comprising two clamping rings (3) sleeved outside the outer shell of the rebound tester (2), a connecting plate (4) being provided between the two clamping rings (3), the top openings of the two clamping rings (3) being connected by bolts (5), the triggering member comprising a supporting plate (9) provided at the top of the tripod (1) and a triggering gear (11) rotatably provided on the top surface of the supporting plate (9), the supporting plate (9) being provided with a connecting plate (4) being provided between the two clamping rings (3), the top openings of the two clamping rings (3) being connected by bolts (5), the triggering member comprising a supporting plate (9) provided at the top of the tripod (1) and a triggering gear (11) rotatably provided on the top surface of the supporting plate (9), the supporting plate (9) being provided with a connecting plate (4) being provided between the two clamping rings (3) and the triggering member (1 ... The top surface of the plate (9) is slidably provided with an inserting platform (6), the top of the inserting platform (6) is provided with a slot (7) which cooperates with the two clamping rings (3), the inserting platform (6) is externally connected with two bolts (8) for fixing the two clamping rings (3), one side of the inserting platform (6) is provided with a toothed plate (12), the outer surface of the toothed plate (12) is provided with a plurality of toothed plates which cooperate with the trigger gear (11), the bottom surface of the support plate (9) is provided with a trigger motor for controlling the rotation of the trigger gear (11), and the trigger gear (11) is a half gear.

2. A concrete hardness detection device for housing safety appraisal according to claim 1, characterized in that: The bottom of the inserting platform (6) is provided with a slide groove, the top surface of the support plate (9) is provided with a T-shaped guide block (10) that matches the slide groove, and a return spring (13) is connected between the slide groove and the guide block (10).

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