Calibration device for floor thickness gauge

Abstract

The utility model relates to the field of precise instrument calibration, in particular to a calibration device for a floor thickness gauge, which comprises a base, four screws are rotatably connected onto the base, transmission components for synchronous rotation are arranged among the screws, one of the screws is connected with a hand wheel, the middles of the four screws are jointly connected with a lifting plate, and the lifting plate is fixedly connected with the base. An ejector rod is slidably connected to the base and sleeved with a first spring, one end of the first spring is connected with the ejector rod, the other end of the first spring is connected with the base, a rotating ring is rotatably connected into the base, a wedge-shaped block is connected to the outer side of the rotating ring, and a fixing assembly used for fixing equipment is arranged in the rotating ring. A standard block is arranged in the middle of the lifting plate. Through cooperation of the screws, the transmission assembly and the lifting plate, the four screws rotate synchronously to drive the lifting plate to move downwards stably, so that accurate control over the lifting plate is achieved, and finally the purpose that the positions of the signal transmitting part and the receiving and measuring part are accurately aligned in the calibration process is achieved.

Description

Technical Field

[0001] This utility model relates to the field of precision instrument calibration, and in particular to a calibration device for a floor slab thickness gauge. Background Technology

[0002] In the modern construction industry, floor slabs, as key structural elements for load-bearing and partitioning, are crucial for ensuring the overall stability and safety of buildings. Floor slab thickness gauges, as professional non-destructive testing tools, integrate sophisticated signal transmitting and receiving measurement components to achieve rapid and accurate measurement of the thickness of non-metallic media such as floor slabs. The thickness of the object is calculated based on parameters such as the round-trip time or phase difference of the signal.

[0003] However, despite the significant technological advantages of slab thickness gauges, the accuracy of any precision measuring instrument may deviate after a period of use. Therefore, regular calibration is a necessary step to ensure accurate measurement results. Traditional calibration methods rely on using a standard block with a known height or thickness as a reference. During calibration, the signal transmitting and receiving parts of the thickness gauge are placed at opposite ends of the test block. The instrument's measurement parameters are adjusted until the displayed data perfectly matches the nominal thickness of the test block, thus completing the calibration.

[0004] The current calibration equipment and procedures have several shortcomings. First, manually aligning the two parts of the thickness gauge precisely with the ends of the test block is not only cumbersome but also susceptible to human factors such as visual errors and hand tremors, which can lead to slight deviations during alignment. Second, if the thickness gauge or its components are not securely fixed during calibration, any accidental touch or slight movement may alter the original alignment, thereby introducing calibration errors. Utility Model Content

[0005] To overcome the shortcomings of manual alignment and poor calibration accuracy, this utility model provides a fixed calibration device for a floor slab thickness gauge, aiming to solve the above-mentioned shortcomings.

[0006] A calibration device for a floor slab thickness gauge includes a base with four screws rotatably connected to it. A transmission assembly for synchronous rotation is provided between the screws. A handwheel is connected to one of the screws. A lifting plate is connected to the middle of the four screws. A top rod is slidably connected to the base. A first spring is sleeved on the top rod, with one end connected to the top rod and the other end connected to the base. A groove for placing the equipment is provided in the middle of the base. A rotating ring is rotatably connected inside the base. A wedge block is connected to the outside of the rotating ring. The inclined surface of the top of the wedge block presses against the top rod. A fixing assembly for fixing the equipment is provided inside the rotating ring. A standard block is provided in the middle of the lifting plate.

[0007] In one embodiment, the transmission assembly includes a belt and pulleys, with two pulleys connected to each screw, and both ends of the belt connected to the pulleys. Except for diagonally opposite screws, every two screws are connected by the belt drive.

[0008] In one embodiment, the fixing component includes fasteners, and a plurality of fasteners are slidably connected to the side of the swivel. A triangular block is provided on the part of the fastener extending into the swivel, and the inclined surface of the triangular block faces opposite to the inclined surface of the wedge block. A second spring is sleeved on the part of the fastener extending out of the swivel, one end of the second spring is connected to the swivel, and the other end is connected to the fastener. A plurality of compression rods are slidably connected to the inner side of the base. A third spring is sleeved on the outer end of the compression rod, one end of the third spring is connected to the compression rod, and the other end is connected to the swivel. The triangular block at the end of the fastener is in compression engagement with the outer end of the compression rod.

[0009] In one embodiment, a cover is also included, on which the tops of the four screws are rotatably connected, the cover enclosing all the belts and pulleys.

[0010] In one embodiment, a level is also included, with levels mounted around the base.

[0011] In one embodiment, the base also includes adjustable feet, with a plurality of adjustable feet mounted on the bottom of the base.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. Through the cooperation of screws, transmission components and lifting plate, the four screws rotate synchronously, driving the lifting plate to move smoothly downward, thereby achieving precise control of the lifting plate, and ultimately achieving the purpose of precise alignment between the signal transmitting part and the receiving measurement part during the calibration process.

[0014] 2. Through the cooperation of the top rod, the first spring, the wedge block and the rotating ring, the lifting plate presses the top rod when it moves down. The top rod pushes the wedge block to drive the rotating ring to rotate, thereby realizing the automatic clamping and fixing of the signal transmission part, and finally achieving the purpose of stable fixing of the equipment during the calibration process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the connection structure between the wedge block and the extrusion rod of this utility model.

[0018] The parts and their numbers in the diagram are as follows: 1_Base, 2_Screw, 201_Belt, 202_Pulley, 3_Lifting Plate, 4_Handwheel, 5_Top Rod, 6_First Spring, 7_Wedge Block, 8_Rotating Ring, 9_Fastener, 10_Second Spring, 11_Pressure Rod, 12_Third Spring, 13_Cover, 14_Level, 15_Adjusting Foot, 16_Standard Block. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] Example: A calibration device for a floor slab thickness gauge, such as... Figures 1-3 As shown, the device includes a base 1, screws 2, a transmission assembly, a lifting plate 3, a handwheel 4, a top rod 5, a first spring 6, a wedge block 7, a rotating ring 8, a fixing assembly, and a standard block 16. Four screws 2 are rotatably connected to the base 1, distributed at the four corners of a square. A transmission assembly for synchronous rotation is provided between the screws 2. A handwheel 4 is connected to one of the screws 2. The lifting plate 3 is connected to the middle of the four screws 2. A top rod 5 is slidably connected to the base 1. A first spring 6 is sleeved on the top rod 5. One end of the first spring 6 is connected to the top rod 5, and the other end is connected to the base 1. A groove for placing equipment is provided in the middle of the base 1. A rotating ring 8 is rotatably connected inside the base 1. A wedge block 7 is connected to the outside of the rotating ring 8. The top inclined surface of the wedge block 7 is pressed and engaged with the top rod 5. A fixing assembly for fixing equipment is provided inside the rotating ring 8. A standard block 16 is provided in the middle of the lifting plate 3.

[0021] like Figure 2 As shown, the transmission assembly includes a belt 201 and pulleys 202. Each screw 2 is connected to two pulleys 202. Both ends of the belt 201 are connected to the pulleys 202. Except for the diagonally opposite screws 2, every two screws 2 are connected by the belt 201. The synchronously rotating screws 2 drive the lifting plate 3 to move down smoothly, ensuring the consistency of the movement of the lifting plate 3 during the calibration process.

[0022] like Figure 2 and Figure 3 As shown, the fixing assembly includes fasteners 9, second springs 10, compression rods 11, and third springs 12. Twelve fasteners 9 are slidably connected to the side of the rotating ring 8. A triangular block is provided on the part of the fastener 9 that extends into the rotating ring 8. The inclined surface of the triangular block faces the opposite direction to the inclined surface of the wedge block 7. The second spring 10 is sleeved on the part of the fastener 9 that extends out of the rotating ring 8. One end of the second spring 10 is connected to the rotating ring 8, and the other end is connected to the fastener 9. Twelve compression rods 11 are slidably connected to the inner side of the base 1. The third spring 12 is sleeved on the outer end of the compression rod 11. One end of the third spring 12 is connected to the compression rod 11, and the other end is connected to the rotating ring 8. The triangular block at the end of the fastener 9 is in compression engagement with the outer end of the compression rod 11.

[0023] like Figure 2 As shown, it also includes a cover 13. The top of the four screws 2 are rotatably connected to the cover 13. The cover 13 covers all belts 201 and pulleys 202, protecting the transmission components from the influence of the external environment. A handle is provided in the middle of the cover 13, which can be used to move the entire calibration device, making it easy to move and position the equipment.

[0024] like Figure 1 As shown, it also includes a level 14. Levels 14 are installed around the base 1 to measure whether the base 1 is level.

[0025] like Figure 1 As shown, it also includes adjustable feet 15. Four adjustable feet 15 are installed at the bottom of the base 1. The height of the base 1 can be adjusted by adjusting the adjustable feet 15 to ensure that the top surface of the base 1 is in a horizontal state, thus ensuring the accuracy of the calibration process.

[0026] The signal transmitting part is placed in the groove of the base 1, and the receiving and measuring part is placed on the lifting plate 3. The standard block 16 is locked in the middle of the lifting plate 3. The calibrator turns the handwheel 4 to rotate the screw 2. Through the belt 201 and pulley 202, all screws 2 rotate synchronously, thereby driving the lifting plate 3 to move downward. Then the lifting plate 3 presses against the top rod 5. As the top rod 5 slides downward, it compresses the first spring 6. The bottom of the top rod 5 presses against the wedge block 7. As the wedge block 7 moves, it drives the rotating ring 8 to rotate. As the rotating ring 8 rotates, the outer end of the fastener 9 follows the rotation of the rotating ring 8 and presses against the pressing rod 11, thereby pushing the pressing rod 11 to slide from the periphery to the center, clamping and fixing the signal transmitting part, while compressing the second spring 1. 0 and the third spring 12, at this time adjust the position of the standard block 16 so that its bottom contacts the signal transmitting part for calibration. After calibration, rotate the handwheel 4 in the opposite direction to disengage the lifting plate 3 from the top rod 5. The first spring 6 rebounds. After the wedge block 7 is no longer squeezed by external force, the rotating ring 8 relaxes. At this time, the second spring 10 and the third spring 12 rebound. When the third spring 12 rebounds, it pushes the pressing rod 11 to slide outward, releasing the fixation of the signal transmitting part. The outer end of the pressing rod 11 is squeezed against the triangular block of the fastener 9, pushing the triangular block to move. Since the inclined surface of the triangular block faces the opposite direction to the inclined surface of the wedge block 7, the pressing rod 11 pushes the rotating ring 8 to rotate in the opposite direction to reset. The second spring 10 rebounds to reset the position of the fastener 9 on the rotating ring 8.

[0027] The cover 13 can protect the environment of the belt 201 and pulley 202 assembly, and the entire calibration device can be moved by the handle on the cover 13. When the base 1 is placed on the supporting plane, the level 14 is used to measure whether the plane is flat. If it is not flat, the height of a certain position of the base 1 can be adjusted by a single adjusting foot 15 to ensure that the top surface of the base 1 is in a horizontal state, thereby further ensuring the accuracy of the calibration process.

[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A calibration device for a floor slab thickness gauge, characterized in that: The device includes a base (1), on which four screws (2) are rotatably connected. A transmission assembly for synchronous rotation is provided between the screws (2). A handwheel (4) is connected to one of the screws (2). A lifting plate (3) is connected to the middle of the four screws (2). A top rod (5) is slidably connected to the base (1). A first spring (6) is sleeved on the top rod (5). One end of the first spring (6) is connected to the top rod (5), and the other end is connected to the base (1). A groove for placing equipment is provided in the middle of the base (1). A rotating ring (8) is rotatably connected inside the base (1). A wedge block (7) is connected to the outside of the rotating ring (8). The top inclined surface of the wedge block (7) is pressed and engaged with the top rod (5). A fixing assembly for fixing equipment is provided inside the rotating ring (8). A standard block (16) is provided in the middle of the lifting plate (3).

2. The calibration device for a floor slab thickness gauge as described in claim 1, characterized in that: The transmission assembly includes a belt (201) and pulleys (202). Each screw (2) is connected to two pulleys (202). Both ends of the belt (201) are connected to the pulleys (202). Except for diagonally opposite screws (2), every two screws (2) are connected by the belt (201).

3. The calibration device for a floor slab thickness gauge as described in claim 1, characterized in that: The fixing component includes fasteners (9), and several fasteners (9) are slidably connected to the side of the rotating ring (8). A triangular block is provided on the part of the fastener (9) that extends into the rotating ring (8). The inclined surface of the triangular block faces the opposite direction to the inclined surface of the wedge block (7). A second spring (10) is sleeved on the part of the fastener (9) that extends out of the rotating ring (8). One end of the second spring (10) is connected to the rotating ring (8), and the other end is connected to the fastener (9). Several extrusion rods (11) are slidably connected to the inner side of the base (1). A third spring (12) is sleeved on the outer end of the extrusion rod (11). One end of the third spring (12) is connected to the extrusion rod (11), and the other end is connected to the rotating ring (8). The triangular block at the end of the fastener (9) is in a pressing fit with the outer end of the extrusion rod (11).

4. The calibration device for a floor slab thickness gauge as described in claim 2, characterized in that: It also includes a cover (13), the tops of the four screws (2) are rotatably connected to the cover (13), the cover (13) covers all the belts (201) and the pulleys (202).

5. The calibration device for a floor slab thickness gauge as described in claim 1, characterized in that: It also includes a level (14), which is installed around the base (1).

6. The calibration device for a floor slab thickness gauge as described in claim 1, characterized in that: It also includes adjustable feet (15), and a plurality of adjustable feet (15) are installed on the bottom of the base (1).

Images