Measuring tape verification table device

Abstract

The utility model discloses a measuring tape verification table device, belongs to the technical field of detection, and solves the problem that the position of a clamping point of an existing verification table cannot be adjusted, so that observation is affected. The device comprises a main working table, a working tail table and a heavy weight, the clamping structure comprises a mounting plate, two sliding plates and two first extrusion screw rods, two L-shaped plates are mounted on the mounting plate, one ends of the two sliding plates are slidably mounted on the inner sides of the two L-shaped plates in a one-to-one correspondence manner, an adjusting screw rod is rotatably mounted on each L-shaped plate, and the two first extrusion screw rods are rotatably mounted on the working tail table. One end of each adjusting screw rod penetrates through the corresponding sliding plate and is in threaded connection with the sliding plate, guide grooves are formed in the opposite ends of the two sliding plates, and the two first extrusion screw rods are in threaded connection to the other ends of the sliding plates in a one-to-one correspondence mode. According to the measuring tape verification table device, the position of a clamping point can be adjusted at any time, so that the detection of a worker is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, and more specifically, to a tape measure calibration platform device. Background Art

[0002] Steel tape measures are used to measure the length of objects and are widely used across various industries, particularly in shipbuilding, where they are frequently used for various measurements. To ensure the accuracy and reliability of steel tape measures, new steel tape measures are generally inspected before they are issued and used. Traditional inspection methods involve manually holding a standard steel tape measure and a steel tape measure to be inspected, hooking them around the object being measured, and then checking the scale lines one by one. This method is labor-intensive and inconvenient. Several existing tape measure calibration stations, such as those in Patent Publication Nos. CN207019561U and CN210952565U, can assist with inspection. However, in actual use, the clamping points for both the standard steel tape measure and the steel tape measure to be inspected are fixed. When the clamping points of either the standard steel tape measure or the steel tape measure to be inspected are fixed, they can easily obscure the desired scale lines, making it impossible to observe the inspection.

[0003] Therefore, it is urgent to develop and design a tape measure calibration platform device to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art. The purpose of the present invention is to provide a tape measure calibration platform device, which can adjust the position of the clamping point at any time, thereby facilitating inspection by staff.

[0005] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod is pivotally connected to said linking rod. said linking rod is pivotally connected to said linking rod.

[0006] As a further improvement, the positioning structure includes a standard steel tape measure positioning assembly and a steel tape measure positioning assembly to be tested. The standard steel tape measure positioning assembly and the steel tape measure positioning assembly to be tested have the same structure and both include three columns. The three columns are evenly fixed on the top of the main workbench and form a accommodating cavity for accommodating the steel tape measure.

[0007] Furthermore, the movable clamp assembly includes a U-shaped seat and two second extrusion screws, the two second extrusion screws are threadedly connected to the U-shaped seat, and the end of each second extrusion screw extends into the U-shaped seat, and a hook is provided at the bottom of the U-shaped seat, and the weight is hung on the hook.

[0008] Furthermore, the ends of the first extrusion screw and the second extrusion screw are both provided with spherical rubber heads, and the inner wall bottoms of the guide groove and the U-shaped seat are both provided with rubber pads.

[0009] Furthermore, one end of the adjusting screw away from the sliding plate, as well as the top of the first extrusion screw and the top of the second extrusion screw are all movably connected with radially arranged handles.

[0010] Furthermore, a white silicone plate is provided on the top surface of the work tail platform, and a rounded corner is provided on one end of the white silicone plate away from the main work platform.

[0011] Furthermore, the main workbench and the work tail platform, as well as the mounting plate and the main workbench are connected by a plurality of fastening bolts.

[0012] Furthermore, a cylindrical pin is provided in the middle of one end of the work tail platform away from the main work platform, and a slide groove is provided along its axial direction in the middle of one end of the work tail platform away from the main work platform, and the cylindrical pin is slidably installed in the slide groove.

[0013] Beneficial effects

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

[0015] The tape measure calibration platform device of the present invention has a first extrusion screw installed on a slidable sliding plate. During actual use, the sliding plate can be driven to move by rotating the adjusting screw, and then the position of the first extrusion screw can be adjusted, so that the first extrusion screw can be clamped and fixed at a position avoiding the scale line that needs to be observed. For example, when detecting the indication error, the first extrusion screw can be clamped and fixed avoiding the scale line position of 4 meters or 5 meters. The tape measure calibration platform device can adjust the position of the clamping point at any time, thereby facilitating detection by staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the top structure of the utility model;

[0017] Figure 2 This is an enlarged schematic diagram of the top view of the main workbench in the present utility model;

[0018] Figure 3 for Figure 1 A schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 5 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0021] Figure 6 for Figure 4 Schematic diagram of the enlarged structure at point C in the middle.

[0022] Among them: 1-main workbench, 2-work tail platform, 3-weight, 4-ruler, 5-movable clamp assembly, 6-mounting plate, 7-sliding plate, 8-first extrusion screw, 9-L-shaped plate, 10-adjusting screw, 11-guide groove, 12-column, 13-rubber head, 14-rubber pad, 15-handle, 16-white silicone plate, 17-fastening bolt, 18-cylindrical pin, 19-slide, 20-standard steel tape, 21-steel tape to be tested, 51-U-shaped seat, 52-second extrusion screw, 53-hook. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0024] See Figure 1-6The utility model relates to a tape measure calibration platform device, comprising a main workbench 1, a work tail platform 2 and a weight 3, wherein the main workbench 1 and the work tail platform 2 are detachably connected to each other, which is convenient for disassembly and movement. On the main workbench 1, along one end of the work tail platform 2, a positioning structure for positioning the steel tape measure and a clamping structure for clamping the scale bar 4 of the steel tape measure are sequentially provided. A movable clamping assembly 5 for connecting with the scale bar 4 of the steel tape measure is hung on the top of the weight 3, so that the scale bar of the steel tape measure can be straightened and flattened by using the weight 3; specifically, the clamping structure comprises a mounting plate 6, two sliding plates 7 and two first extrusion screws 8, wherein the mounting plate 6 is detachably mounted on the main workbench 1, which is convenient for disassembly and maintenance. Two L-shaped plates 9 are installed, and one end of the two sliding plates 7 is slidably installed on the inner side of the two L-shaped plates 9 in a one-to-one manner, which plays a guiding role in the sliding of the sliding plates 7. An adjusting screw 10 is rotatably installed on each L-shaped plate 9, and one end of the adjusting screw 10 passes through the sliding plate 7 and is threadedly connected to it, so that the position of the sliding plate 7 can be adjusted by using the adjusting screw 10. A guide groove 11 is provided at the opposite end of the two sliding plates 7 to facilitate the insertion of the steel tape measure 4 into the sliding plate 7, and then to facilitate the first extrusion screw 8 to extrude and fix the scale bar 4. The two first extrusion screws 8 are threadedly connected to the other end of the sliding plate 7 in a one-to-one manner, and the end of each first extrusion screw 8 extends into the guide groove 11.

[0025] The tape measure calibration platform device of the present invention has a first extrusion screw 8 installed on a slidable sliding plate 7. During actual use, the sliding plate 7 can be driven to move by rotating the adjusting screw 10, and then the position of the first extrusion screw 8 can be adjusted, so that the first extrusion screw 8 can be clamped and fixed at a position avoiding the scale line that needs to be observed. For example, when detecting the indication error, the tape measure calibration platform device can adjust the position of the clamping point at any time, thereby facilitating detection by staff.

[0026] Preferably, the positioning structure includes a standard steel tape measure positioning assembly and a steel tape measure positioning assembly to be tested. The standard steel tape measure positioning assembly and the steel tape measure positioning assembly to be tested have the same structure and both include three columns 12. The three columns 12 are evenly fixed on the top of the main workbench 1 and form a accommodating cavity for accommodating the steel tape measure. The standard steel tape measure 20 and the steel tape measure to be tested 21 are both placed in the accommodating cavity, which makes it convenient for the staff to pull the ruler 4 out, making the operation more convenient.

[0027] Preferably, the movable clamp assembly 5 includes a U-shaped seat 51 and two second extrusion screws 52, wherein the two second extrusion screws 52 are threadedly connected to the U-shaped seat 51, and the end of each second extrusion screw 52 extends into the U-shaped seat 51, and a hook 53 is provided at the bottom of the U-shaped seat 51, and the weight 3 is hung on the hook 53. The movable clamp assembly 5 adopts the cooperation of the U-shaped seat 51 and the second extrusion screw 52 to facilitate the insertion of the steel tape measure 4 into the U-shaped seat 51, and also to facilitate the end of the tape 4 to hook the bottom surface of the U-shaped seat 51.

[0028] Preferably, a spherical rubber head 13 is provided at the end of the first extrusion screw 8 and the second extrusion screw 52, ​​and a rubber pad 14 is provided at the bottom of the inner wall of the guide groove 11 and the U-shaped seat 51. The rubber head 13 and the rubber pad 14 are in contact with the ruler 4 to avoid the problem of wear of the ruler 4 due to rigid friction.

[0029] Preferably, radially arranged handles 15 are movably inserted at the end of the adjusting screw 10 away from the sliding plate 7 and the top of the first extrusion screw 8 and the top of the second extrusion screw 52 to facilitate the rotation of the adjusting screw 10, the first extrusion screw 8 and the second extrusion screw 52.

[0030] Preferably, the top surface height of the working tail table 2 is higher than the top surface height of the main working table 1, so that the ruler 4 can better fit on the top surface of the working tail table 2. A white silicone plate 16 is also provided on the top surface of the working tail table 2. The white silicone plate 16 allows staff to better observe the position of the scale line. A chamfered corner is provided on the end of the white silicone plate 16 away from the main working table 1, so that the ruler 4 can be better bent under the gravity tension of the weight 3, thereby effectively protecting the ruler 4.

[0031] Preferably, the main workbench 1 and the work tail platform 2, as well as the mounting plate 6 and the main workbench 1 are connected by a plurality of fastening bolts 17 to achieve detachable connection.

[0032] Preferably, a cylindrical pin 18 is provided at the middle position of the end of the work tail table 2 away from the main work table 1, and a slide groove 19 is provided along its axial direction at the middle position of the end of the work tail table 2 away from the main work table 1. The cylindrical pin 18 is slidably installed in the slide groove 19, and a step surface is provided at the lower part of the cylindrical pin 18, which is used to fit the top surface of the slide groove 19 to achieve the cylindrical pin 18 being able to move axially along the work tail table 2 and also rotate at the same time. In actual working process, the cylindrical pin 18 can separate and position the scale bars 4 of the two steel tape measures to avoid the problem of the scale bars 4 being offset and affecting the observation and detection. At the same time, the movable cylindrical pin 18 can avoid the position of the scale line that needs to be observed, so as not to affect the staff's observation of the scale value of the inspected point. At the same time, the movable cylindrical pin 18 can also guide the scale bar 4 to avoid the problem of damage caused by rigid friction between the edge of the scale bar 4 and the cylindrical pin 18.

[0033] A tape measure calibration method includes the above-mentioned tape measure calibration platform device. The method includes zero value error detection and indication error detection. The specific steps are as follows:

[0034] S1: Place the standard steel tape measure 20 into the receiving cavity between the three upright posts 12 of the standard steel tape measure positioning assembly corresponding to the positioning structure to achieve the position positioning of the standard steel tape measure 20;

[0035] S2: Pull the ruler 4 corresponding to the standard steel tape measure 20 to extend, so that the ruler 4 passes through the guide groove 11 corresponding to one of the sliding plates 7, with the front of the scale line facing upward and the back of the scale line flatly attached to the top surface of the work platform 2, so that the scale value is convenient for observing, until it extends to the end of the work platform 2 away from the main workbench 1, and hooks the bottom surface of the U-shaped seat 51 corresponding to the movable clamp assembly 5;

[0036] S3: Hang the weight 3 on the hook 53 corresponding to the movable clamp assembly 5, and then use one of the second squeezing screws 52 corresponding to the movable clamp assembly 5 to squeeze and fix the end of the scale 4 of the standard steel tape measure 20. At the same time, use the first squeezing screw 8 above one of the sliding plates 7 to squeeze and fix the other end of the scale 4 of the standard steel tape measure 20, so as to clamp and fix the scale 4 of the standard steel tape measure 20;

[0037] S4: Place the steel tape measure 21 to be tested into the accommodation cavity between the three upright posts 12 of the steel tape measure positioning assembly to be tested corresponding to the positioning structure to achieve the position positioning of the steel tape measure 21 to be tested;

[0038] S5: Pull the rack 4 corresponding to the steel tape measure 21 to be tested to extend it, so that the tape measure 4 passes through the guide groove 11 corresponding to the other sliding plate 7, with the front of the scale line facing upwards and the back of the scale line flatly attached to the top surface of the work tail table 2, so that the scale value can be easily observed, until it extends to the end of the work tail table 2 away from the main workbench 1 and hooks the bottom surface of the U-shaped seat 51 corresponding to the movable clamp assembly 5;

[0039] S6: Use the other second squeezing screw 52 corresponding to the movable clamp assembly 5 to squeeze and fix the end of the scale bar 4 of the steel tape measure 21 to be tested, and at the same time use the first squeezing screw 8 above the other sliding plate 7 to squeeze and fix the other end of the scale bar 4 of the steel tape measure 21 to be tested, so as to clamp and fix the scale bar 4 of the standard steel tape measure 20;

[0040] S7: Read the error value between the steel tape measure 21 to be tested at the 500mm scale line position and the standard steel tape measure 20 at the 500mm scale line position, regard it as a zero value error, and record it, thereby realizing the zero value error detection of the steel tape measure 21 to be tested;

[0041] S8: Compare the steel tape measure 21 to be tested with the standard steel tape measure 20 at each meter scale line position, and calculate the indication error of each inspected point of the steel tape measure 21 to be tested, and record it to realize the indication error detection of the steel tape measure 21 to be tested. If the zero value error is within the standard range and the indication error of each inspected point is within the standard range, the steel tape measure to be tested is qualified, otherwise it is unqualified.

[0042] In step S8, the indication error of each inspected point of the steel tape measure 21 to be inspected is calculated according to the following formula:

[0043] △L=L-LS20+δL

[0044] Where:

[0045] △L—the indication error of the steel tape to be tested.

[0046] L—the nominal length of the inspection point of the steel tape to be tested,

[0047] LS20 - Actual length of standard steel tape at 20°C.

[0048] δL—The deviation value of the inspection point of the steel tape to be tested read on the standard steel tape.

[0049] By using the above-mentioned verification method, it is possible to detect the zero value error and indication error of the steel tape measure, effectively improving the detection accuracy.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A tape measure calibration platform device, characterized in that: The invention comprises a main working table (1), a working tail table (2) and a weight (3), wherein the main working table (1) and the working tail table (2) are detachably connected, a positioning structure for positioning a steel tape measure and a clamping structure for clamping a steel tape measure strip (4) are sequentially provided on the main working table (1) along one end of the working tail table (2), and a movable clamping assembly (5) for connecting with the steel tape measure strip (4) is hung on the top of the weight (3); the clamping structure comprises a mounting plate (6), two sliding plates (7) and two first extrusion screws (8), and the mounting plate (6) is detachably mounted on the main working table (1) Two L-shaped plates (9) are installed on the mounting plate (6), and one end of the two sliding plates (7) is slidably installed on the inner side of the two L-shaped plates (9) in a one-to-one manner. An adjusting screw (10) is rotatably installed on each of the L-shaped plates (9), and one end of the adjusting screw (10) passes through the sliding plate (7) and is threadedly connected thereto. A guide groove (11) is provided at the opposite end of the two sliding plates (7). The two first extrusion screws (8) are threadedly connected to the other end of the sliding plate (7) in a one-to-one manner, and the end of each of the first extrusion screws (8) extends into the guide groove (11).

2. A tape measure calibration platform device according to claim 1, characterized in that: The positioning structure includes a standard steel tape positioning assembly and a steel tape positioning assembly to be tested. The standard steel tape positioning assembly and the steel tape positioning assembly to be tested have the same structure and both include three columns (12). The three columns (12) are evenly fixed on the top of the main workbench (1) and enclose a receiving cavity for receiving the steel tape.

3. The tape measure calibration device according to claim 1, characterized in that: The movable clamp assembly (5) includes a U-shaped seat (51) and two second extrusion screws (52), the two second extrusion screws (52) are threadedly connected to the U-shaped seat (51), and the end of each second extrusion screw (52) extends into the U-shaped seat (51), and a hook (53) is provided at the bottom of the U-shaped seat (51), and the weight (3) is suspended on the hook (53).

4. The tape measure calibration device according to claim 3, characterized in that: The ends of the first extrusion screw (8) and the second extrusion screw (52) are both provided with spherical rubber heads (13), and the inner wall bottoms of the guide groove (11) and the U-shaped seat (51) are both provided with rubber pads (14).

5. The tape measure calibration platform device according to claim 3, characterized in that: The end of the adjusting screw (10) away from the sliding plate (7), the top of the first extrusion screw (8), and the top of the second extrusion screw (52) are all movably connected with radially arranged handles (15).

6. The tape measure calibration platform device according to claim 1, characterized in that: The top surface of the work tail platform (2) is further provided with a white silica gel plate (16), and the end of the white silica gel plate (16) away from the main work platform (1) is provided with a rounded corner.

7. The tape measure calibration platform device according to claim 1, characterized in that: The main workbench (1) and the work tail platform (2), as well as the mounting plate (6) and the main workbench (1) are connected via a plurality of fastening bolts (17).

8. A tape measure calibration platform device according to any one of claims 1 to 7, characterized in that: A cylindrical pin (18) is further provided at the middle position of one end of the working tail table (2) away from the main working table (1), and a sliding groove (19) arranged along its axial direction is further provided at the middle position of one end of the working tail table (2) away from the main working table (1), and the cylindrical pin (18) is slidably installed in the sliding groove (19).

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