A device for quickly checking the length of a thread and the number of turns of a thread and a method of use

Abstract

The application provides a device and a use method for quickly checking thread length and thread ring number, comprising a measuring rod, one end of the measuring rod is provided with a positioning part, the other end is provided with a bending part, the measuring rod is provided with a first scale mark and a second scale mark in the length direction of the measuring rod, the first scale mark and the second scale mark are located on the same side of the same plane of the measuring rod, and are used for measuring thread length, and the bending part is provided with a scale line, which is used for measuring thread ring number. The beneficial effect of the application is that the measurement of thread length and thread ring number can be quickly completed, the measurement accuracy is improved, the construction progress is accelerated, and the construction quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a device for quickly checking thread length and thread ring number and a use method thereof. Background Art

[0002] In the field of construction technology, rebar often needs to be mechanically connected using joints. The length of a mechanical joint is the length of the joint connector plus the length of the section where the cross-section of the rebar changes at both ends of the connector. The commonly used joint connector is a sleeve, which is used to connect the threaded ends of two rebars. In this case, the length of the connector is the sleeve length plus the length of the exposed threads at both ends. During on-site construction, in order to facilitate subsequent construction, the threaded ends of the two rebars must be precisely butted together, that is, the length of the joints must be consistent.

[0003] In the existing technology, the processing error of the threaded end of the steel bar is large. Construction workers use a tape measure to measure when checking the thread length. After the threaded ends of two steel bars are connected with a sleeve, the number of exposed thread rings is usually observed with the naked eye to determine the length of the entire mechanical connection joint. The measurement error is large and the measurement is inaccurate, which cannot guarantee subsequent normal construction. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a device for quickly checking thread length and thread ring number, which effectively solves the problem of large measurement errors of thread length and thread ring number and overcomes the shortcomings of the existing technology.

[0005] The technical solution adopted by the present invention is: a device for quickly checking the length of a thread and the number of thread rings, comprising a measuring rod, wherein a positioning portion is provided at one end of the measuring rod and a bending portion is provided at the other end. The measuring rod is provided with a first scale mark and a second scale mark in the length direction thereof, and the first scale mark and the second scale mark are located on the same side of the same plane of the measuring rod and are used to check the length of the thread. The bending portion is provided with scale lines for measuring the number of thread rings.

[0006] Furthermore, the bent portion is bent away from a side of the measuring rod on which the first scale mark and the second scale mark are provided.

[0007] Furthermore, the positioning portion protrudes from the measuring rod on a side perpendicular to the length direction of the measuring rod and close to the first scale mark and the second scale mark, and the protruding end face connected to the measuring rod is perpendicular to the length direction of the measuring rod.

[0008] Furthermore, the first scale line is arranged at one end of the measuring rod close to the positioning part, the distance from the protruding end face to the first scale mark is the minimum length allowed for the thread to be measured, and the distance between the first scale mark and the second scale mark is the length error range allowed for the thread to be measured.

[0009] Furthermore, the bending radius of the bending portion is the thread radius of the thread to be measured.

[0010] Furthermore, a cutout is provided on one side of the tail of the bending portion, and the cross section of the cutout is perpendicular to the length direction or width direction of the measuring rod.

[0011] Furthermore, the scale lines are perpendicular to the length direction of the measuring rod and are evenly distributed on the outside of the tail of the bending part of the measuring rod. The starting scale of the scale lines is set at the cut section, and the distance between the scale lines is the pitch of the thread to be measured.

[0012] The present invention also provides a method for using a device for quickly checking thread length and thread ring number, comprising the following steps:

[0013] The end face of the first steel bar thread to be measured is held against the positioning portion, and the first steel bar thread to be measured is placed along the length direction of the measuring rod. If the other end of the first steel bar thread to be measured falls between the first scale mark and the second scale mark, the length of the first steel bar thread to be measured is qualified; otherwise, it is unqualified.

[0014] Use the same measuring method to detect the second steel bar thread to be tested;

[0015] Connecting the first steel bar thread to be tested and the second steel bar thread to be tested using a sleeve;

[0016] Place the measuring rod perpendicular to the length of the sleeve, snap the tail of the bent portion into the end of the sleeve, and compare the scale line with the exposed threads at both ends of the sleeve to measure the number of exposed threads.

[0017] The advantages and positive effects of the present invention are: due to the adoption of the above technical solution, the accurate measurement of the thread length and the number of thread rings can be quickly completed, the construction progress can be accelerated, and the construction quality can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic structural diagram of a device for quickly checking thread length and thread ring number according to an embodiment of the present invention.

[0019] Figure 2 The present invention is a schematic structural diagram of a device for quickly checking thread length and thread ring number according to an embodiment of the present invention.

[0020] Figure 3 The present invention is a schematic diagram of an apparatus for quickly checking thread length and number of thread rings according to an embodiment of the present invention for detecting thread length.

[0021] Figure 4The present invention is a schematic diagram of a device for quickly checking thread length and thread ring number for measuring thread ring number according to an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Positioning part 2. Measuring rod 3. Bending part

[0024] 4. First scale mark 5. Second scale mark 6. Scale line

[0025] 7. Incision 8. First steel bar thread to be tested 9. Second steel bar thread to be tested

[0026] 10. Sleeve DETAILED DESCRIPTION

[0027] An embodiment of the present invention provides a device and a method for quickly checking thread length and thread ring number. The embodiment of the present invention is described below with reference to the accompanying drawings.

[0028] like Figure 1 As shown, an embodiment of the present invention provides a device for quickly checking thread length and number of thread rings, including a positioning portion 1, a measuring rod 2, and a bending portion 3. The positioning portion 1 is provided at one end of the measuring rod 2, and the bending portion 3 is provided at the other end. The measuring rod 2 is provided with a first scale mark 4 and a second scale mark 5 in the length direction thereof. The first scale mark 4 and the second scale mark 5 are located on the same side of the same plane of the measuring rod 2 and are used to check the thread length. The bending portion 3 is provided with a scale line 6 for measuring the number of thread rings.

[0029] Specifically, the bent portion 3 is bent away from the side of the measuring rod 2 provided with the first scale mark 4 and the second scale mark 5. In order to measure the number of rings of the thread to be measured, a bend is provided at one end of the measuring rod 2. The bend can be bent inward or outward along the length direction of the measuring rod 2 toward the side of the measuring rod 2 provided with the first scale mark 4 and the second scale mark 5. To avoid the situation where the thread is long, the first scale mark 4 and the second scale mark 5 are relatively close to the bend. When the measuring rods 2 are the same length, bending inward easily blocks the first scale mark 4 and the second scale mark 5. It is preferred that the bent portion 3 be bent away from the side of the measuring rod 2 provided with the first scale mark 4 and the second scale mark 5.

[0030] Specifically, the positioning portion 1 protrudes from the measuring rod 2 on one side perpendicular to the length direction of the measuring rod 2 and close to the first scale mark 4 and the second scale mark 5. The protruding end face connected to the measuring rod 2 is perpendicular to the length direction of the measuring rod 2. The specific shape of the positioning portion 1 is not limited, and it is mainly used for end face positioning of the thread to be measured.

[0031] Specifically, the first scale mark 4 is located at the end of the measuring rod 2 near the positioning portion 1. The distance from the protruding end surface where the positioning portion 1 connects to the measuring rod 2 to the first scale mark 4 represents the minimum allowable length of the thread to be measured. The distance between the first scale mark 4 and the second scale mark 5 represents the allowable error range for the length of the thread to be measured. The first and second scale marks 4, 5 on the measuring rod 2 are used to verify the length of the thread. The positions of the first and second scale marks 4, 5 on the measuring rod 2 are determined based on the length of the thread to be measured.

[0032] Preferably, the bending radius of the bending portion 3 is the thread radius of the thread to be measured, so that the bending portion 3 fits the thread to be measured, the measurement is convenient, and the measurement is more accurate.

[0033] Preferably, a notch 7 is provided on one side of the tail of the bending portion 3, and the cross section of the notch 7 is perpendicular to the length direction or width direction of the measuring rod 2. The notch 7 is used to position the bending portion 3 to facilitate measurement.

[0034] Specifically, the scale lines 6 on the bending portion 3 are perpendicular to the length direction of the measuring rod 2 and are evenly distributed on the outside of the tail of the bending portion 3 of the measuring rod 2. The starting scale of the scale lines 6 is set at the cross section of the notch 7. The distance between the scale lines 6 is the pitch of the thread to be measured.

[0035] Example 1: Figure 1 As shown, a device for quickly checking thread length and number of thread rings, using a thread with a nominal diameter of φ16 as an example, includes a positioning portion 1, a measuring rod 2, and a bending portion 3. The positioning portion 1 and the measuring rod 2 form a T-shaped structure. A first scale mark 4 and a second scale mark 5 are arranged on the same side of the same plane of the T-shaped measuring rod 2 and are used to measure the length of the thread to be measured. The distance from the first scale mark 4 to the end face of the T-shaped positioning portion 1 represents the minimum allowable length of the thread to be measured, and the distance between the first scale mark 4 and the second scale mark 5 represents the allowable length error range of the thread to be measured. The tail of the T-shaped structure is bent away from the measuring rod 2 and has a first scale mark 4 and a second scale mark 5. The bending radius is 8 mm, which is the thread radius of the thread to be measured. A positioning notch 7 is provided on one side of the tail of the bent portion 3. The bent tail is provided with scale lines 6. The scale lines 6 are perpendicular to the length direction of the measuring rod 2 and are evenly distributed on the outside of the tail of the bent portion 3 of the measuring rod 2. The starting scale of the scale lines 6 is set at the cross-section of the notch 7. The distance between the scale lines 6 is 2 mm, which is the pitch of the thread to be measured and is used to measure the number of rings of the thread to be measured.

[0036] Example 2: Figure 2As shown, a device for quickly checking thread length and number of thread rings, using a thread with a nominal diameter of φ16 as an example, includes a measuring rod 2, a positioning portion 1, and a bending portion 3. The positioning portion 1 and measuring rod 2 form an L-shaped structure. A first scale mark 4 and a second scale mark 5 are arranged on the same side of the same plane of the L-shaped measuring rod 2 and are used to measure the length of the thread to be measured. The distance from the first scale mark 4 to the end face of the L-shaped positioning portion 1 is the minimum allowable length of the thread to be measured, and the distance between the first scale mark 4 and the second scale mark 5 is the allowable length error range of the thread to be measured. The tail of the L-shaped structure is bent away from the measuring rod 2 and has a first scale mark 4 and a second scale mark 5. The bending radius is 8 mm, which is the thread radius of the thread to be measured. A positioning notch 7 is provided on one side of the tail of the bent portion 3. The bent tail is provided with scale lines 6. The scale lines 6 are perpendicular to the length direction of the measuring rod 2 and are evenly distributed on the outside of the tail of the bent portion 3 of the measuring rod 2. The starting scale of the scale lines 6 is set at the cross section of the notch 7. The distance between the scale lines 6 is 2 mm, which is the pitch of the thread to be measured and is used to measure the number of rings of the thread to be measured.

[0037] Instructions: This device needs to be customized according to the length and nominal diameter of the thread to be tested. Before each test, customize the device according to the thread length and nominal diameter of the thread to be tested, mark it, and then conduct the inspection.

[0038] like Figure 3 As shown, the end face of the first steel bar thread 8 to be tested is held against the positioning part 1, and the first steel bar thread 8 to be tested is placed along the length direction of the measuring rod 2. If the other end of the first steel bar thread 8 falls between the first scale mark 4 and the second scale mark 5, the length of the first steel bar thread 8 to be tested is qualified, otherwise it is unqualified. The same method is used to detect the length of the second steel bar thread 9 to be tested;

[0039] like Figure 4 As shown, after using the sleeve 10 to connect the first steel bar thread 8 to be measured and the second steel bar thread 9 to be measured, tighten the sleeve 10 with a torque wrench, place the measuring rod 2 perpendicular to the length direction of the sleeve 10, and the tail cutout 7 of the bent portion 3 is engaged with the end face of the sleeve 10. Compare the scale line 6 with the exposed threads at both ends of the sleeve 10 to measure the number of rings of the exposed threads.

[0040] The specific steps are:

[0041] The end face of the first steel bar thread 8 to be measured is held against the positioning portion 2, and the first steel bar thread 8 to be measured is placed along the length direction of the measuring rod 2. If the other end of the first steel bar thread 8 to be measured falls between the first scale mark 4 and the second scale mark 5, the length of the first steel bar thread 8 to be measured is qualified, otherwise it is unqualified;

[0042] The same measuring method is used to detect the second steel bar thread 9 to be tested;

[0043] The sleeve 10 is used to connect the first steel bar 8 and the second steel bar 9 to be measured;

[0044] The measuring rod 2 is placed perpendicularly to the length direction of the sleeve 10, the tail of the bent part 3 is engaged with the end of the sleeve 10, and the scale line 6 is compared with the exposed threads at both ends of the sleeve 10, so that the number of the exposed threads can be measured.

[0045] The above detailed description is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made according to the scope of the present application should still belong to the patent scope of the present application.

Claims

1. A method for quickly checking thread length and thread ring number, characterized by: The device includes a measuring rod, wherein a positioning portion is provided at one end of the measuring rod and a bending portion is provided at the other end. The measuring rod is provided with a first scale mark and a second scale mark in the length direction thereof, and the first scale mark and the second scale mark are located on the same side of the same plane of the measuring rod, and are used to check the length of the thread. The bending portion is provided with scale lines for measuring the number of thread rings. The bending portion is bent away from the side of the measuring rod provided with the first scale mark and the second scale mark. The bending radius of the bending portion is the thread radius of the thread to be measured. A notch is provided on one side of the tail of the bending portion, and the cross section of the notch is perpendicular to the length direction or the width direction of the measuring rod. The following steps are involved: The end face of the first steel bar thread to be measured is held against the positioning portion, and the first steel bar thread to be measured is placed along the length direction of the measuring rod. If the other end of the first steel bar thread to be measured falls between the first scale mark and the second scale mark, the length of the first steel bar thread to be measured is qualified; otherwise, it is unqualified. Use the same measuring method to detect the second steel bar thread to be tested; Connecting the first steel bar thread to be tested and the second steel bar thread to be tested using a sleeve; The measuring rod is placed perpendicular to the length direction of the sleeve, the tail of the bent portion is engaged with the end of the sleeve, and the scale line is compared with the exposed threads at both ends of the sleeve to measure the number of rings of the exposed threads.

2. A method for quickly checking thread length and thread ring number according to claim 1, characterized in that: The positioning portion protrudes from the measuring rod on a side perpendicular to the length direction of the measuring rod and close to the first scale mark and the second scale mark, and the protruding end surface connected to the measuring rod is perpendicular to the length direction of the measuring rod.

3. A method for quickly checking thread length and thread ring number according to claim 2, characterized in that: The first scale line is arranged at one end of the measuring rod close to the positioning part, the distance from the protruding end face to the first scale mark is the minimum length allowed for the thread to be measured, and the distance between the first scale mark and the second scale mark is the length error range allowed for the thread to be measured.

4. A method for quickly checking thread length and thread ring number according to claim 1, characterized in that: The scale lines are perpendicular to the length direction of the measuring rod and are evenly distributed on the outside of the tail of the bending part of the measuring rod. The starting scale of the scale lines is set at the cut section. The distance between the scale lines is the pitch of the thread to be measured.

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