Calibration steel anvil with leveling base

Abstract

The calibration steel anvil comprises a steel anvil body, a circular level bubble is arranged at the top of the steel anvil body, a handle is arranged on the side face of the steel anvil body, the leveling base is arranged at the bottom of the steel anvil body, the leveling base comprises a leveling box, a leveling plate is rotationally arranged at an opening in the upper end of the leveling box, and the leveling plate is arranged on the leveling box. A gravity block is arranged at the bottom of the leveling plate, the mass of the gravity block is larger than that of the steel anvil body, the gravity center of the gravity block and the gravity center of the leveling plate are located on the same straight line, the gravity block enables the leveling plate to be in a horizontal state, a locking nut is arranged on the leveling box, and the locking nut enables the leveling plate to be kept in the horizontal state. When the steel anvil is leveled and leveled by the leveling base, the bubble in the circular level bubble is located in the middle. The calibration steel anvil with the leveling base provided by the utility model can be convenient to carry, and can ensure that the calibration steel anvil is horizontally placed for a construction site without a hard ground.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete rebound tester measuring equipment, in particular to a calibration steel anvil with a leveling base. Background Art

[0002] A rebound hammer standard anvil is a test tool used to calibrate rebound hammers. It is suitable for various types of rebound hammers, including standard medium-duty rebound hammers, mortar rebound hammers, brick rebound hammers, and high-strength rebound hammers. The components of the rebound hammer standard anvil are made of steel and tool steel. These anvils are categorized into lightweight, standard, mortar, and high-strength types. The rebound hammer standard anvil is typically placed on a horizontal surface for calibrating the hammer. The hammer is then struck vertically downward to calibrate the hammer's calibration value.

[0003] After the rebound hammer reaches a certain workload, it needs to be calibrated on a steel anvil to ensure the accuracy of the test. The steel anvil needs to be brought to the project site with the rebound hammer. The relevant steel anvil is heavy, generally more than 16 kilograms. Workers usually hold the steel anvil in their arms with both hands to move it, which is extremely inconvenient to carry. In addition, the site conditions generally do not have a level hard ground, and it is impossible to ensure that the steel anvil can be placed horizontally, which easily leads to inaccurate rebound hammer calibration values.

[0004] In view of this, we propose a calibration steel anvil with a leveling base. Utility Model Content

[0005] The purpose of the utility model is to provide a calibration steel anvil with a leveling base to solve the problems raised in the above background technology.

[0006] In order to achieve the above objectives, the following technical solutions are adopted:

[0007] The utility model provides a calibration anvil with a leveling base, comprising an anvil body, a circular vial bubble provided on the top of the anvil body, a handle provided on the side of the anvil body, a leveling base provided on the bottom of the anvil body, the leveling base comprising a leveling box, a leveling plate rotatably provided at the upper opening of the leveling box, a gravity block provided at the bottom of the leveling plate, the mass of the gravity block being greater than the mass of the anvil body, the center of gravity of the gravity block and the center of gravity of the leveling plate being on the same straight line, the gravity block keeping the leveling plate in a horizontal state, a locking nut provided on the leveling box, the locking nut keeping the leveling plate in a horizontal state, and when the leveling base levels the anvil body, the bubble in the circular vial bubble is in a middle position.

[0008] Furthermore, the leveling plate and the leveling box are connected via a rotating shaft, the rotating shaft is fixedly connected to the leveling plate, the rotating shaft is rotatably connected to the leveling box, and the end of the rotating shaft away from the leveling plate is provided with an external thread that cooperates with a locking nut.

[0009] Furthermore, the handle is a U-shaped handle.

[0010] Furthermore, the leveling plate is connected to the leveling box through a rotating shaft. One end of the rotating shaft is fixedly connected to the leveling plate, the other end of the rotating shaft is rotatably connected to the leveling box, and the end of the rotating shaft away from the leveling plate is provided with an external thread for cooperating with a locking nut.

[0011] Furthermore, an anti-collision layer is provided along the inner wall inside the leveling box.

[0012] Furthermore, the locking nut includes a first nut and a second nut. One end of the first nut is provided with an eccentric boss, and the end face of the first nut provided with the eccentric boss is provided with radial fine teeth. The radial fine teeth are arranged along the outer periphery of the eccentric boss. One end of the second nut is provided with an eccentric groove, and the inner diameter of the eccentric groove is the same as the outer diameter of the eccentric boss. The first nut and the second nut have coaxial threaded holes with the same inner diameter.

[0013] Furthermore, the leveling plate is connected to the gravity block through a leveling rod. The leveling rod is fixedly connected to the leveling plate and the gravity block, and the bottom of the gravity block is close to the inner bottom wall of the leveling box.

[0014] Compared with the prior art, the utility model has the following technical effects:

[0015] 1. In the utility model, for a construction site without a horizontal hard ground, the leveling base is placed on the ground. The leveling box is provided with a gravity block. Due to the self-gravity of the gravity block, the gravity block can drive the leveling plate to rotate until the leveling plate is in a horizontal state. Then, the leveling plate is maintained in a horizontal state through the locking nut. At this time, the anvil body is placed on the leveling plate, and the anvil body is in a horizontal state. The circular spirit level on the anvil body can allow the staff to intuitively judge the horizontal state of the anvil body.

[0016] 2. In the utility model, by providing a handle on the side of the anvil body, the staff can carry the anvil body through the handle, and there is no need to hold the anvil body in the arms for movement, which facilitates the carrying of the staff.

[0017] 3. In the utility model, through the arrangement of the eccentric boss and the eccentric groove, after the first nut and the second nut are installed on the rotating shaft, the second nut is rotated by a certain angle relative to the first nut in the circumferential direction, and the self-locking of the first nut and the second nut can be realized. Moreover, the radial fine teeth provided on the first nut can increase the friction between the first nut and the second nut, preventing the first nut and the second nut from loosening during use. Description of the Drawings

[0018] Figure 1Schematic structural diagram of the calibration steel anvil according to the embodiment of the present utility model;

[0019] Figure 2 Schematic structural diagram of the leveling base according to the embodiment of the present utility model;

[0020] Figure 3 Schematic structural diagram of the first nut according to the embodiment of the present utility model;

[0021] Figure 4 Schematic structural diagram of the second nut according to the embodiment of the present utility model.

[0022] Explanation of reference numerals: 1, steel anvil body; 2, circular spirit level; 21, first circular spirit level; 22, second circular spirit level; 3, handle; 4, leveling base; 41, leveling box; 42, anti-collision layer; 43, leveling plate; 44, rotating shaft; 45, leveling rod; 46, gravity block; 47, locking nut; 471, first nut; 4711, eccentric boss; 4712, radial fine teeth; 472, second nut; 4721, eccentric groove; 473, threaded hole. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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 the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] As an example, please refer to Figures 1 to 4 , this embodiment provides a calibration steel anvil with a leveling base, including a steel anvil body 1. A circular spirit level 2 is installed on the top surface of the steel anvil body 1. The circular spirit level 2 is used to judge whether the steel anvil body 1 is in a horizontal state, enabling the staff to intuitively understand the state of the steel anvil body 1. The circular spirit level 2 is a sealed and transparent container, filled with a specific liquid and having a bubble inside. The position of the bubble is used to indicate the horizontal or inclined state of an object, and it is widely used in various optoelectronic instruments such as theodolites, levels, compasses, electronic scales, total stations, etc.

[0025] On the side of the anvil body 1, there is a handle 3. The handle 3 can be made of anti-slip material or have an anti-slip treatment on its surface to reduce the risk of accidental detachment or dropping caused by slippery hands and improve the safety of use. The handle 3 is a U-shaped handle. The U-shaped design conforms to the ergonomic principle, can naturally fit the shape of the palm, provides a stable holding point, and makes it comfortable and natural for the staff to move the anvil body 1. By setting the handle 3 on the side of the anvil body 1, the staff can move the anvil body 1 through the handle 3, without having to hold the anvil body 1 in their arms for movement, which facilitates the carrying of the staff and reduces the burden on the staff.

[0026] At the bottom of the anvil body 1, there is a leveling base 4, and the leveling base 4 can be separated from the anvil body 1. The leveling base 4 includes a leveling box 41, a leveling plate 43 and a gravity block 46. The leveling box 41 is in the shape of a cylinder with an open upper end. The leveling plate 43 is rotatably arranged at the open upper end of the leveling box 41, and the centers of the upper surfaces of the leveling plate 43 and the leveling box 41 coincide. At the bottom of the leveling plate 43, there is a gravity block 46. In this embodiment, the shape of the gravity block 46 is spherical, and the mass of the gravity block 46 is greater than the mass of the anvil body 1. The center of gravity of the gravity block 46 and the center of gravity of the leveling plate 43 are on the same straight line. Due to its own gravity, the gravity block 46 keeps the leveling plate 43 in a horizontal state. There is a locking nut 47 on the leveling box 41, and the locking nut 47 keeps the leveling plate 43 in a horizontal state. During work, place the leveling base 4 on the ground. Due to its own gravity, the gravity block 46 in the leveling box 41 can drive the leveling plate 43 to rotate until the leveling plate 43 is in a horizontal state. Then use a wrench to tighten the locking nut 47 to keep the leveling plate 43 in a horizontal state. At this time, place the anvil body 1 on the leveling plate 43, and the anvil body 1 is in a horizontal state.

[0027] The leveling plate 43 and the leveling box 41 are connected by a rotating shaft 44. One end of the rotating shaft 44 is fixedly connected to the leveling plate 43. The end of the rotating shaft 44 away from the leveling plate 43 is provided with an external thread that cooperates with the locking nut 47, and this end is rotatably connected to the leveling box 41. The end of the rotating shaft 44 away from the leveling plate 43 extends outward through the corresponding position of the leveling box 41. When the leveling plate 43 is in a horizontal state, the staff uses a wrench to tighten the locking nut 47, and the locking nut 47 presses against the outer wall of the leveling box 41. At this time, the leveling plate 43 is kept in a horizontal state.

[0028] The locking nut 47 includes a first nut 471 and a second nut 472. One end of the first nut 471 is provided with an eccentric boss 4711. The eccentric boss 4711 is a columnar body with different wall thicknesses in the circumferential direction. On the end face of the first nut 471 where the eccentric boss 4711 is provided, radial fine teeth 4712 are provided. The radial fine teeth 4712 are arranged along the outer periphery of the eccentric boss 4711. A threaded hole 473 is provided in the middle of the first nut 471. The threaded hole 473 of the first nut 471 penetrates through the eccentric boss 4711, and the axis of the threaded hole 473 of the first nut 471 is not collinear with the axis of the eccentric boss 4711.

[0029] A threaded hole 473 is also provided in the second nut 472. This threaded hole 473 is coaxial with and has the same inner diameter as the threaded hole 473 on the first nut 471. One end of the second nut 472 is provided with an eccentric groove 4721. The eccentric groove 4721 is a cylindrical groove. The axis of the eccentric groove 4721 is not collinear with the threaded hole 473 of the second nut 472. The inner diameter of the eccentric groove 4721 is the same as the outer diameter of the eccentric boss 4711, and the eccentric boss 4711 can be inserted into the eccentric groove 4721.

[0030] By providing the eccentric boss 4711 and the eccentric groove 4721, after the first nut 471 and the second nut 472 are installed on the rotating shaft 44, when the second nut 472 is rotated by a certain angle relative to the first nut 471 in the circumferential direction, the inner wall of the thicker side of the eccentric boss 4711 will squeeze the outer wall of the rotating shaft 44, realizing the locking of the locking nut 47 and the rotating shaft 44. In addition, the radial fine teeth 4712 of the first nut 471 make the first nut 471 closely contact the second nut 472, forming a clear indentation mark, which can increase the friction between the first nut 471 and the second nut 472 and prevent the first nut 471 and the second nut 472 from loosening during use. Furthermore, the locking nut 47 can also be provided with locking holes along the radial direction on the outer peripheral surface, and locking pins are installed in the locking holes. The locking pins abut against the rotating shaft 44 to enhance the locking degree of the locking nut 47.

[0031] An anti-collision layer 42 is provided along the inner wall inside the leveling box 41. In this embodiment, the anti-collision layer 42 is made of rubber material. The rubber material has good elasticity and energy absorption performance. When the gravity block 46 impacts the inner wall of the leveling box 41, the anti-collision layer 42 can effectively absorb the impact energy, reduce the damage of the leveling box 41, and improve the service life of the leveling box 41.

[0032] A leveling plate 43 and a gravity block 46 are connected by a leveling rod 45. One end of the leveling rod 45 is fixedly installed at the center of the leveling plate 43, and the other end of the leveling rod 45 is fixedly connected to the gravity block 46. The bottom of the gravity block 46 is close to the inner bottom wall of the leveling box 41. By providing the leveling rod 45, the center of gravity position of the gravity block 46 can be effectively reduced, thereby improving the leveling accuracy.

[0033] There are two circular spirit levels 2, including a first circular spirit level 21 and a second circular spirit level 22. The first circular spirit level 21 is arranged along the radial direction of the anvil body 1, and the second circular spirit level 22 is arranged along the radial direction perpendicular to the plane of the radial direction where the first circular spirit level 21 is located. The first circular spirit level 21 and the second circular spirit level 22 are arranged at 90 degrees with the axis of the anvil body 1 as the center. In this way, it is possible to comprehensively judge whether the anvil body 1 is in a horizontal position in two directions, which helps the staff to fully understand the state of the anvil body 1, thereby improving the accuracy and reducing the error.

[0034] For the calibration anvil with a leveling base provided in this embodiment, the staff carries the anvil body 1 to the construction site through the handle 3. For the construction site without a flat hard ground, the staff places the leveling base 4 on the ground. Due to its own gravity, the gravity block 46 in the leveling box 41 can drive the leveling plate 43 to rotate until the leveling plate 43 is in a horizontal state. Then, use a wrench to tighten the locking nut 47, and the locking nut 47 keeps the leveling plate 43 in a horizontal state. Then, place the anvil body 1 on the leveling plate 43. At this time, the anvil body 1 is in a horizontal state, and the bubble in the circular spirit level 2 on the anvil body 1 is in the middle position. After that, the staff can carry out the rebound instrument calibration experiment.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A calibration steel anvil with a leveling base, characterized in that, It includes an anvil body (1), a circular spirit level (2) is provided at the top of the anvil body (1), a handle (3) is provided on the side of the anvil body (1), a leveling base (4) is provided at the bottom of the anvil body (1), the leveling base (4) includes a leveling box (41), a leveling plate (43) is rotatably provided at the upper opening of the leveling box (41), a gravity block (46) is provided at the bottom of the leveling plate (43), the mass of the gravity block (46) is greater than the mass of the anvil body (1), the center of gravity of the gravity block (46) and the center of gravity of the leveling plate (43) are on the same straight line, the gravity block (46) makes the leveling plate (43) in a horizontal state, a locking nut (47) is provided on the leveling box (41), and the locking nut (47) keeps the leveling plate (43) in a horizontal state. When the leveling base (4) levels the anvil body (1), the bubble in the circular spirit level (2) is in the middle position.

2. The calibration steel anvil with a leveling base according to claim 1, characterized in that, There are two circular spirit levels (2), including a first circular spirit level (21) and a second circular spirit level (22). The first circular spirit level (21) is arranged along the radial direction of the anvil body (1), and the second circular spirit level (22) is arranged along the radial direction perpendicular to the plane of the radial direction where the first circular spirit level (21) is located.

3. The calibration steel anvil with a leveling base according to claim 1, characterized in that, The handle (3) is a U-shaped handle.

4. The calibration steel anvil with a leveling base according to claim 1, characterized in that, The leveling plate (43) is connected to the leveling box (41) through a rotating shaft (44). One end of the rotating shaft (44) is fixedly connected to the leveling plate (43), and the other end of the rotating shaft (44) is rotatably connected to the leveling box (41). An external thread for cooperating with the locking nut (47) is provided at the end of the rotating shaft (44) away from the leveling plate (43).

5. The calibration anvil with a leveling base according to claim 1, characterized in that: An anti-collision layer (42) is provided along the inner wall inside the leveling box (41).

6. The calibration anvil with a leveling base according to claim 1, characterized in that: The locking nut includes a first nut (471) and a second nut (472). An eccentric boss (4711) is provided at one end of the first nut (471), and radial fine teeth (4712) are provided on the end face of the first nut (471) with the eccentric boss (4711). The radial fine teeth (4712) are arranged along the outer periphery of the eccentric boss (4711). An eccentric groove (4721) is provided at one end of the second nut (472), and the inner diameter of the eccentric groove (4721) is the same as the outer diameter of the eccentric boss (4711). The first nut (471) and the second nut (472) have coaxial and identical threaded holes (473).

7. The calibration anvil with a leveling base according to claim 1, characterized in that: The leveling plate (43) is connected to the gravity block (46) through a leveling rod (45). The leveling rod (45) is fixedly connected to the leveling plate (43) and the gravity block (46), and the bottom of the gravity block (46) is close to the inner bottom wall of the leveling box (41).

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