Zero adjusting and fastening combined device for detecting steel tape

Abstract

The utility model discloses a zero adjusting and fastening combined device for detecting a steel tape, which is characterized in that a standard ruler fastener and a detected ruler fastener respectively comprise a C-shaped clamping device and a fastening bolt, and the top of each C-shaped clamping device is provided with a threaded hole matched with the fastening bolt; the fastening bolt is in threaded connection with the threaded hole, and the lower end of the fastening bolt extends into the C-shaped clamp holder; the specifications of the C-shaped clamping devices of the standard ruler fastening device and the detected ruler fastening device are the same, and the openings of the C-shaped clamping devices of the standard ruler fastening device and the detected ruler fastening device are arranged oppositely; the zero-value line pattern adjuster comprises a linear driving mechanism and a sliding block. The linear driving mechanism is in transmission connection with the sliding block and can drive the sliding block to move in the length direction of the detected ruler fastener and the standard ruler fastener. One of the to-be-detected ruler fastener and the standard ruler fastener is fixed on the sliding block, and the other one is fixed on the fixing frame. According to the utility model, the verification efficiency can be improved, and the verification precision can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of measuring tool calibration technology, specifically to a zero-position adjustment and fastening combination device for calibrating steel tape measures. Background Technology

[0002] According to JJG4-2015 "Verification Procedure for Steel Measuring Tapes", the process for determining the indication error of a steel measuring tape is roughly as follows: The standard steel measuring tape and the measuring tape under test are installed parallel to each other and kept on the same plane. Then, a specified tension is applied to both the standard and the measuring tape under test. The zero-value line center of the measuring tape under test is aligned with the zero-value line center of the standard steel measuring tape, and the deviation value of each inspected point is obtained. The steel measuring tape verification platform is used to fasten the standard and the measuring tape under test and adjust their zero-value line positions. During verification, the measuring tape under test and the standard steel measuring tape need to be installed on the verification platform for testing. After testing, the verified measuring tape under test and the standard steel measuring tape are disassembled before installing another set of measuring tapes under test and the standard steel measuring tape, resulting in low efficiency. Furthermore, when the measuring range of the steel tape measure being inspected is less than the length of the calibration platform, a thin steel wire rope of a certain length needs to be connected to one end of the steel tape measure to ensure it matches the length of the calibration platform, thus allowing tension to be applied to that end of the steel tape measure. Because the toughness of the steel wire rope differs from that of the steel tape measure being inspected, and because the installation and removal of the wire rope is cumbersome, this increases the workload for calibration personnel and fails to meet the required accuracy. In the daily, demanding inspection process, this severely impacts both efficiency and accuracy. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the present invention aims to provide a zero-position adjustment and fastening combination device for calibrating steel tape measures.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A zero-point adjustment and fastening assembly for calibrating steel tape measures includes a standard tape measure fastener, a tape measure fastener under test, a zero-value line adjustment device, and a fixing frame. Both the standard tape measure fastener and the tape measure fastener under test include a C-shaped clamp and a fastening bolt. The top of the C-shaped clamp has a threaded hole that matches the fastening bolt. The fastening bolt is threaded into the threaded hole, and its lower end extends into the C-shaped clamp. The C-shaped clamps of the standard tape measure fastener and the tape measure fastener under test are of the same specification, and their openings face each other. The zero-value line adjustment device includes a linear drive mechanism and a slider. The linear drive mechanism is tractively connected to the slider and can drive the slider to move along the length direction of both the tape measure fastener under test and the standard tape measure fastener. One of the tape measure fastener and the standard tape measure fastener is fixed to the slider, and the other is fixed to the fixing frame.

[0006] Furthermore, the linear drive mechanism includes a rotating mechanism, a driving wheel, a first driven wheel, a second driven wheel, and a rack; the rotating mechanism is connected to the driving wheel and can drive the driving wheel to rotate; the driving wheel meshes with the first driven wheel, the first driven wheel and the second driven wheel are coaxially connected, and the rack meshes with the second driven wheel; the slider is fixed to the rack.

[0007] Furthermore, the rotating mechanism includes a rotating wheel, which is coaxially connected to the driving wheel.

[0008] Furthermore, the standard ruler fastener and the inspected ruler fastener are staggered.

[0009] Furthermore, the fixing frame includes a horizontal plate and a vertical plate, the vertical plate being vertically fixed to one side of the horizontal plate, the standard ruler fastener, the inspected ruler fastener, the slider and the rack being installed on the horizontal plate, and the rotating mechanism, the driving wheel, the driven wheel one and the driven wheel two being installed on the vertical plate.

[0010] Furthermore, the top surface of the fixing frame is provided with a recessed sliding groove, and the slider is disposed in the sliding groove and can move linearly along the sliding groove.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. In this utility model, the standard ruler fastener and the inspected ruler fastener have simple structures and are easy to use, making it convenient to assemble and disassemble the inspected steel tape measure and the standard steel tape measure.

[0013] 2. This utility model integrates the standard ruler fastener, the inspected ruler fastener, and the zero-value line adjustment device into a whole, which can be fixed on or removed from the inspection platform at any time. Therefore, the inspected steel tape measure and the standard steel tape measure can be pre-installed. After one set of inspected steel tape measures is inspected, it can be immediately removed, and then another set of installed inspected steel tape measures and the standard steel tape measure can be placed on the inspection platform, thereby effectively improving the inspection efficiency.

[0014] 3. This utility model integrates the standard ruler fastener, the inspected ruler fastener, and the zero-value line adjustment device into a whole, so that it can move on the calibration platform and find a suitable position for calibration. It can adapt to different lengths of the inspected steel tape measure. Even if the length of the inspected steel tape measure is less than the length of the calibration platform, it does not need to rely on auxiliary equipment for testing, thereby improving calibration efficiency and ensuring calibration accuracy. Attached Figure Description

[0015] Figure 1 This is a top view of the zero-position adjustment and fastening combination device for calibrating steel tape measures in this embodiment of the present invention;

[0016] Figure 2 This is a bottom view of the zero-position adjustment and fastening combination device for calibrating steel tape measures in this embodiment of the present invention. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings. It should be noted that this embodiment is based on the present technical solution and provides detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to this embodiment.

[0018] This embodiment provides a zero-position adjustment and fastening combination device for calibrating steel tape measures, such as... Figure 1-2 As shown, the device includes a standard ruler fastener 1, a ruler under inspection fastener 2, a zero-value line adjustment device 3, and a fixing bracket 4. Both the standard ruler fastener 1 and the ruler under inspection fastener 2 include a C-type clamp 101 and a fastening bolt 102. The top of the C-type clamp 101 has a threaded hole that matches the fastening bolt 102. The fastening bolt 102 is threadedly connected to the threaded hole, and its lower end extends into the C-type clamp 101. The C-type clamps 101 are identical in specifications, and the openings of the C-type clamps 101 of the standard ruler fastener 1 and the ruler fastener 2 are arranged facing each other; the zero-value line adjustment device includes a linear drive mechanism and a slider 5, the linear drive mechanism being drivenly connected to the slider 5 and capable of driving the slider 5 to move along the length direction of the ruler fastener 2 and the standard ruler fastener 1; one of the ruler fastener 2 and the standard ruler fastener 1 is fixed to the slider 5, and the other is fixed to the fixing frame 4. Specifically, Figure 1 As shown, the measuring ruler fastener 2 is fixed to the slider 5, and the standard ruler fastener 1 is fixed to the fixing frame 4.

[0019] By driving the slider through a linear drive mechanism, the measuring tape fastener 2 can be moved linearly along the length direction via the slider to adjust the zero line of the steel measuring tape being inspected to be precisely aligned with the zero line of the standard steel measuring tape.

[0020] It should be noted that using C-type clamps of the same specifications can ensure that the steel tape measure being inspected and the standard steel tape measure are on the same plane after being clamped in the corresponding C-type clamps.

[0021] In this embodiment, the linear drive mechanism includes a rotating mechanism, a driving wheel 6, a driven wheel one 7, a driven wheel two 8, and a rack 9. The rotating mechanism is connected to the driving wheel 6 and can drive the driving wheel 6 to rotate. The driving wheel 6 meshes with the driven wheel one 7, the driven wheel one 7 and the driven wheel two 8 are coaxially connected, and the rack 9 meshes with the driven wheel two 8. The slider 5 is fixed to the rack 9. Specifically, by rotating the driving wheel through the rotating mechanism, the driving wheel drives the driven wheel one to rotate, and the driven wheel one further drives the driven wheel two to rotate, thereby driving the rack and slider to move linearly, achieving the purpose of aligning the inspected steel tape measure with the zero-value line of the standard steel tape measure.

[0022] More specifically, the rotating mechanism includes a rotating wheel 10, which is coaxially connected to the driving wheel 6.

[0023] In this embodiment, the standard ruler fastener 1 and the inspected ruler fastener 2 are staggered. This staggered arrangement of the C-type clamps 101 of the standard ruler fastener 1 and the inspected ruler fastener 2 facilitates the fastening operation of the standard steel tape measure and the inspected steel tape measure on the standard ruler fastener and the inspected ruler fastener, preventing mutual obstruction.

[0024] In this embodiment, the fixing frame 4 includes a horizontal plate 41 and a vertical plate 42. The vertical plate 42 is vertically fixed to one side of the horizontal plate 41. The standard ruler fastener 1, the inspected ruler fastener 2, the slider 5, and the rack 9 are installed on the horizontal plate 41. The rotating mechanism, the driving wheel 6, the driven wheel 1 7, and the driven wheel 2 8 are all installed on the vertical plate 42. The fixing frame, including the horizontal and vertical plates, has an L-shaped structure, which allows for a more reasonable arrangement and layout of the standard ruler fastener 1, the inspected ruler fastener 2, and the zero-value line adjustment device 3, and also facilitates the placement and positioning of the entire device on the calibration platform.

[0025] In this embodiment, the top surface of the fixing frame 4 is provided with a recessed sliding groove 11, and the slider 5 is disposed in the sliding groove 11 and can move linearly along the sliding groove 11. The sliding groove 11 can guide and limit the sliding of the slider 5, making the sliding of the slider 5 more stable.

[0026] In use, fix the zero-point adjustment and fastening combination device for calibrating the steel tape measure in a suitable position on the calibration platform. Clamp the standard steel tape measure 200 and the steel tape measure 201 under test into the openings of the corresponding C-type clamps using the standard tape measure fastener and the tape measure under test fastener, respectively, and tighten them by rotating the fastening bolts. Then, apply the corresponding tension to the standard steel tape measure and the steel tape measure under test according to the procedure requirements, and adjust the center of the zero-value line of the steel tape measure under test to be fully aligned with the center of the zero-value line of the standard steel tape measure using the zero-value line adjuster. Then, read the deviation of each inspected point of the steel tape measure under test to obtain the indication error of the steel tape measure under test.

[0027] For those skilled in the art, various corresponding changes and modifications can be made based on the above technical solutions and concepts, and all such changes and modifications should be included within the protection scope of the claims of this utility model.

Claims

1. A zero-position adjustment and fastening assembly for calibrating steel tape measures, characterized in that, The system includes a standard ruler fastener (1), a ruler under inspection fastener (2), a zero-value line adjustment device (3), and a fixing bracket (4). Both the standard ruler fastener (1) and the ruler under inspection fastener (2) include a C-type clamp (101) and a fastening bolt (102). The top of the C-type clamp (101) has a threaded hole that matches the fastening bolt (102). The fastening bolt (102) is threadedly connected to the threaded hole, and the lower end of the fastening bolt (102) extends into the C-type clamp (101). The standard ruler fastener (1) and the ruler under inspection fastener (2)... The C-type clamps (101) of the standard ruler fastener (1) and the ruler fastener (2) are of the same specification, and the openings of the C-type clamps (101) of the standard ruler fastener (1) and the ruler fastener (2) are arranged facing each other; the zero-value line adjustment device includes a linear drive mechanism and a slider (5), the linear drive mechanism is connected to the slider (5) and can drive the slider (5) to move along the length direction of the ruler fastener (2) and the standard ruler fastener (1); one of the ruler fastener (2) and the standard ruler fastener (1) is fixed on the slider (5), and the other is fixed on the fixing frame (4).

2. The zero-position adjustment and fastening combination device according to claim 1, characterized in that, The linear drive mechanism includes a rotating mechanism, a driving wheel (6), a driven wheel one (7), a driven wheel two (8), and a rack (9); the rotating mechanism is connected to the driving wheel (6) and can drive the driving wheel (6) to rotate; the driving wheel (6) meshes with the driven wheel one (7), the driven wheel one (7) and the driven wheel two (8) are coaxially connected, the rack (9) and the driven wheel two (8) mesh with each other; the slider (5) is fixed to the rack (9).

3. The zero-position adjustment and fastening combination device according to claim 2, characterized in that, The rotating mechanism includes a rotating wheel (10), which is coaxially connected to the driving wheel (6).

4. The zero-position adjustment and fastening combination device according to claim 1, characterized in that, The standard ruler fastener (1) and the inspected ruler fastener (2) are staggered.

5. The zero-position adjustment and fastening combination device according to claim 2, characterized in that, The fixing frame (4) includes a horizontal plate (41) and a vertical plate (42). The vertical plate (42) is vertically fixed to one side of the horizontal plate (41). The standard ruler fastener (1), the inspected ruler fastener (2), the slider (5) and the rack (9) are installed on the horizontal plate (41). The rotating mechanism, the driving wheel (6), the first driven wheel (7) and the second driven wheel (8) are all installed on the vertical plate (42).

6. The zero-position adjustment and fastening combination device according to claim 1, characterized in that, The top surface of the fixed frame (4) is provided with a recessed sliding groove (11), and the slider (5) is located in the sliding groove (11) and can move linearly along the sliding groove (11).

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