CN214582913U

CN214582913U - A tool for measuring the elongation of wheel bolts

Info

Publication number: CN214582913U
Application number: CN202023164523.XU
Authority: CN
Inventors: 乐增孟; 黄耀文; 罗以勇; 蔡文智; 詹金援
Original assignee: Zhongshan Jiaming Electric Power Co ltd
Current assignee: Zhongshan Jiaming Electric Power Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-11-02
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a tool for measuring the elongation of a wheel bolt, which comprises a measuring main rod, a fastening mechanism arranged on the measuring main rod, a coarse adjustment component and a measuring arm. The rod body of the measuring main rod is provided with A limit key arranged along the length direction of the main measuring rod. The tool for measuring the elongation of the wheel bolt of the utility model comprises a measuring main rod and a measuring arm on the end of the measuring main rod. The measurement points at both ends of the bolt are kept on the same center line, which can effectively reduce the measurement error caused by the positional deviation of the position measurement points.

Description

Coupling bolt elongation measuring tool

Technical Field

The utility model relates to a metal part check out test set field, concretely relates to pair wheel bolt elongation measuring tool.

Background

The elongation of the wheel bolt is a main mechanical performance index for evaluating the quality of the wheel bolt. At present, the elongation of the wheel bolt is measured by an external micrometer, and the length of each bolt before and after locking is measured, and the elongation is determined by calculating the difference between the before and after locking. However, the method has the disadvantages of low efficiency of measuring data and large error, and the measuring error is caused mainly because the points measured at the two ends of the wheel bolt are difficult to be unified on the same central line. In addition, the hand feeling of each measurer is different for the tightening force of the outside micrometer of the measuring tool, and an error is also generated.

Disclosure of Invention

To the reason that causes wheel bolt elongation measuring error among the above-mentioned prior art, the utility model provides a wheel bolt elongation measuring tool, including measuring the mobile jib and setting up the measuring arm on measuring the mobile jib end, still be equipped with the locating part on measuring the mobile jib, can restrict the position of measuring the arm, guarantee that the measuring point at wheel bolt both ends keeps on same central line, can effectively reduce because the measuring error that position measurement point position deviation caused.

The utility model provides a technical scheme that its technical problem adopted is: a tool for measuring elongation of a pair wheel bolt comprises a measuring main rod, a fastening mechanism arranged on the measuring main rod, a coarse adjustment assembly and a measuring arm, wherein a rod body of the measuring main rod is provided with a limit key arranged along the length direction of the measuring main rod; the measuring arm is provided with a first measuring arm and a second measuring arm, the first measuring arm is detachably fixed at one end of the measuring main rod by the fastening mechanism, the second measuring arm and the coarse adjusting component are detachably fixed at the other end of the measuring main rod by the fastening mechanism, and the coarse adjusting component adjusts the position of the second measuring arm in the length direction of the measuring main rod; a mounting hole is formed in one end of the measuring arm, a key groove matched with the limiting key is formed in the hole wall of the mounting hole, so that the circumferential rotation of the measuring arm along the measuring main rod is limited, and the first measuring arm and the second measuring arm are arranged in parallel at opposite positions; the other end of the second measuring arm is provided with more than one measuring hole, and a sleeve of the dial indicator can be inserted into the measuring hole.

The utility model provides a technical scheme that its technical problem adopted further still includes:

according to the tool for measuring the elongation of the paired wheel bolt, the first measuring arm is provided with the fine adjustment holes corresponding to the measuring holes one to one, the central points of the opposite measuring holes and the fine adjustment holes are on the same straight line, the fine adjustment studs perpendicular to the first measuring arm are inserted into the fine adjustment holes, and the fine adjustment studs on the two sides of the first measuring arm are respectively provided with the adjusting nuts.

In the wheel bolt elongation measuring tool, the end of the fine adjustment stud facing the second measuring arm is hemispherical.

According to the tool for measuring the elongation of the wheel bolt, the fastening mechanism comprises a fastening nut and a gasket, the fastening nut is sleeved at the end of the measuring main rod, a connecting section for installing the fastening mechanism is arranged at the end of the measuring main rod, an external thread matched with the internal thread of the fastening nut is arranged on the outer surface of the connecting section, and the gasket is arranged between the fastening nut and the measuring arm.

According to the tool for measuring the elongation of the wheel bolt, the second measuring arm is provided with the fixing screw for fixing the dial indicator sleeve, the side face of the second measuring arm is provided with the fixing through hole, the fixing screw vertically extends into the measuring hole from the outer side face of the second measuring arm, the tail end of the fixing screw is abutted against the outer surface of the dial indicator sleeve installed in the measuring hole, and the inner wall of the fixing through hole is provided with the internal thread matched with the external thread of the fixing screw.

According to the wheel bolt elongation measuring tool, the coarse adjusting assembly comprises more than two coarse adjusting sleeves with different lengths, the coarse adjusting sleeves are sleeved on the measuring main rod, and the second measuring arm is installed on one side of the coarse adjusting sleeves or between the coarse adjusting sleeves.

According to the wheel bolt elongation measuring tool, the inner wall of the coarse adjusting sleeve is provided with the coarse adjusting key groove matched with the limiting key, so that the coarse adjusting sleeve is limited to rotate along the circumferential direction of the measuring main rod.

The utility model has the advantages that: the utility model discloses a pair wheel bolt elongation measuring tool, including measuring the mobile jib and setting up the measuring arm on measuring the mobile jib end, still be equipped with the spacing key on the measuring mobile jib, can restrict the position of measuring arm, guarantee that the measuring point at wheel bolt both ends keeps on same central line, can effectively reduce the measurement error because position measuring point position deviation causes; the measuring arm is provided with a fine tuning column for adjusting and fastening a tested bolt, one end of the fine tuning column, which is in contact with the tested bolt, is a hemisphere, so that the contact reference point of the fine tuning column and the tested bolt can be ensured to be point contact, after the length of the bolt is adjusted to be suitable for the length of the bolt in the initial measurement, the positions of the fine tuning column on the measuring arm and the measuring arm are not changed, only a measuring rod of a dial indicator is adjusted, and the measurement error caused by the hand feeling difference of a tester can be effectively reduced; and can set up a plurality of measuring orifices on the measuring arm according to the use needs, the person of facilitating the use can select the measuring orifice that suits according to the coupling wheel thickness of different main equipment, and application scope is very extensive, effectively guarantees measurement accuracy.

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a schematic perspective view of a preferred embodiment of a wheel bolt elongation measuring tool according to the present invention;

FIG. 2 is a reference diagram showing a state of use of a preferred embodiment of the wheel bolt elongation measuring tool according to the present invention;

in the figure, 1, a fastening nut, 2, a gasket, 3, a first measuring arm, 4, a measuring main rod, 5, a limit key, 6, a coarse adjusting sleeve, 7, a second measuring arm, 8, a coarse adjusting key groove, 9, a mounting hole, 10, a connecting section, 11, a fine adjusting hole, 12, an adjusting nut, 13, a fine adjusting stud, 14, a measuring hole, 15, a fixing screw, 16, a fixing through hole, 17, a dial indicator, 1000 and a pair wheel bolt.

Detailed Description

The embodiment is a preferred embodiment of the present invention, and other principles and basic structures are the same as or similar to those of the embodiment, and are within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "plurality" or "a plurality" means two or more unless specifically limited otherwise.

The utility model discloses a better embodiment of wheel bolt elongation measuring tool is shown with reference to fig. 1-2, including measuring mobile jib 4, setting up fastening device, coarse adjusting subassembly and the measuring arm on measuring mobile jib 4. The pole body of measuring mobile jib 4 is equipped with spacing key 5 along the length direction setting of measuring mobile jib 4, and the measuring arm is equipped with first measuring arm 3 and second measuring arm 7, and first measuring arm 3 is fixed in the one end of measuring mobile jib 4 by fastening mechanism detachable, and second measuring arm 7 and coarse adjusting component are fixed at the other end of measuring mobile jib 4 by fastening mechanism detachable, and coarse adjusting component adjusts the position of second measuring arm 7 on measuring mobile jib 4 length direction. The measuring arm that includes first measuring arm 3 and second measuring arm 7 serves and is equipped with mounting hole 9 respectively, is equipped with the keyway identical with spacing key 5 on the pore wall of mounting hole 9 for measuring arm's circumferential direction along measuring mobile jib 4 is restricted, and unified on the coplanar, the setting that first measuring arm 3 and second measuring arm 7 are parallel to each other is in relative position. The other end of the second measuring arm 7 is provided with more than one measuring hole 14, in this embodiment, two measuring holes 14 are provided, the sleeve of the dial indicator can be inserted into the measuring holes 14, and the appropriate measuring hole 14 can be selected according to the size of the bolt in use.

In this embodiment, the first measuring arm 3 is provided with the fine adjustment holes 11 corresponding to the measuring holes 14 one to one, the center points of the corresponding measuring holes 14 and the fine adjustment holes 11 are on the same straight line, it is ensured that the front and rear measuring points are on the same center line, the fine adjustment studs 13 perpendicular to the first measuring arm 3 are inserted in the fine adjustment holes 11, the contact between the fine adjustment studs 13 and the pair wheel bolts 1000 can be adjusted, the measuring error caused by the hand feeling of a user is reduced, and the fine adjustment studs 13 on the two sides of the first measuring arm 3 are respectively provided with the adjusting nuts 12. In order to ensure point contact between the fine adjustment stud 13 and the coupling bolt 1000, the end of the fine adjustment stud 13 facing the second measuring arm 7 is hemispherical.

In this embodiment, fastening device includes fastening nut 1 and gasket 2, and fastening nut 1 suit is at the tip of measuring mobile jib 4, is equipped with the linkage segment 10 of installation fastening device on the tip of measuring mobile jib 4, and the outer surface of linkage segment 10 is equipped with the external screw thread anastomotic with fastening nut 1's internal thread, and gasket 2 sets up between fastening nut 1 and measuring arm.

In this embodiment, in order to fix the dial indicator 17 better, the second measuring arm 7 is provided with a fixing screw 15 for fixing the sleeve of the dial indicator, and the side surface of the second measuring arm 7 is provided with a fixing through hole 16, so that the fixing screw 15 vertically extends into the measuring hole 14 from the outer side surface of the second measuring arm 7, the tail end of the fixing screw 15 abuts against the outer surface of the sleeve of the dial indicator installed in the measuring hole 14, and the inner wall of the fixing through hole 16 is provided with an internal thread matched with the external thread of the fixing screw 15.

In order to facilitate the rapid adjustment of the position of the second measuring arm 7, the coarse adjustment assembly comprises more than two coarse adjustment sleeves 6 with different lengths, the coarse adjustment sleeves 6 are sleeved on the measuring main rod 4, the second measuring arm 7 is installed on one side of the coarse adjustment sleeves 6 or between the coarse adjustment sleeves 6, and the number of the coarse adjustment sleeves 6 is two. In this embodiment, a coarse adjustment key groove matched with the limit key is formed on the inner wall of the coarse adjustment sleeve 6, so that the circumferential rotation of the coarse adjustment sleeve 6 along the measuring main rod 4 is limited.

When the device is used, all the parts are assembled, the positions of the two rough adjusting sleeves 6 are adjusted according to the length of the bolt, then the fine adjusting studs 13 are adjusted for fine adjustment, once the length of the stud is adjusted to be suitable for the length of the paired wheel bolt, the used fastening mechanism is fastened, and the standard length is guaranteed to be unchanged. The measuring rod of the dial indicator 17 is attached to the surface of the coupling bolt 1000, the datum point of the fine tuning stud 13 and the contact point of the dial indicator 17 are both in contact with the end face of the coupling bolt 1000, the indication numbers of the dial indicator 17 before and after the coupling bolt 1000 is fastened are respectively read, and the difference value is the extension amount of the coupling bolt 1000.

The utility model discloses a pair wheel bolt elongation measuring tool, including measuring the mobile jib and setting up the measuring arm on measuring the mobile jib end, still be equipped with the spacing key on the measuring mobile jib, can restrict the position of measuring arm, guarantee that the measuring point at wheel bolt both ends keeps on same central line, can effectively reduce the measurement error because position measuring point position deviation causes; the measuring arm is provided with a fine tuning column for adjusting and fastening a tested bolt, one end of the fine tuning column, which is in contact with the tested bolt, is a hemisphere, so that the contact reference point of the fine tuning column and the tested bolt can be ensured to be point contact, after the length of the bolt is adjusted to be suitable for the length of the bolt in the initial measurement, the positions of the fine tuning column on the measuring arm and the measuring arm are not changed, only a measuring rod of a dial indicator is adjusted, and the measurement error caused by the hand feeling difference of a tester can be effectively reduced; and can set up a plurality of measuring orifices on the measuring arm according to the use needs, the person of facilitating the use can select the measuring orifice that suits according to the coupling wheel thickness of different main equipment, and application scope is very extensive, effectively guarantees measurement accuracy.

Claims

1. A tool for measuring the elongation of wheel bolts, characterized in that it comprises a main measuring rod (4), a fastening mechanism arranged on the main measuring rod (4), a coarse adjustment assembly and a measuring arm, the A limit key (5) arranged along the length direction of the main measurement rod (4) is provided on the rod body of the main measurement rod (4); the measurement arm is provided with a first measurement arm (3) and a second measurement arm (3) Arm (7), the first measurement arm (3) is detachably fixed on one end of the measurement main rod (4) by the fastening mechanism, the second measurement arm (7) and the coarse adjustment assembly are The fastening mechanism is detachably fixed on the other end of the main measurement rod (4), and the coarse adjustment assembly adjusts the position of the second measurement arm (7) in the length direction of the main measurement rod (4); the One end of the measuring arm is provided with a mounting hole (9), and the hole wall of the mounting hole (9) is provided with a keyway that matches the limit key (5), so that the measuring arm is along the measuring main rod. The circumferential rotation of (4) is restricted, and the first measuring arm (3) and the second measuring arm (7) are arranged in parallel with each other at opposite positions; the other end of the second measuring arm (7) is provided with There is more than one measuring hole (14) into which the sleeve of the dial indicator (17) can be inserted.

2 . The wheel bolt elongation measuring tool according to claim 1 , wherein the first measuring arm ( 3 ) is provided with fine adjustment holes ( 11 corresponding to the measuring holes ( 14 ) one-to-one. 3 . ), the center points of the opposite measuring holes (14) and the fine-tuning holes (11) are on the same line, and the fine-tuning holes (11) are inserted with fine-tuning studs ( 13), adjusting nuts (12) are respectively provided on the fine adjustment studs (13) on both sides of the first measuring arm (3).

3. The wheel bolt elongation measuring tool according to claim 2, characterized in that the end of the fine adjustment stud (13) facing the second measuring arm (7) is hemispherical.

4. The wheel bolt elongation measuring tool according to claim 1, wherein the fastening mechanism comprises a fastening nut (1) and a washer (2), and the fastening nut (1) is sleeved The end of the main measuring rod (4) is provided with a connecting section (10) on which the fastening mechanism is installed, and the outer surface of the connecting section (10) is provided with a connecting section (10). There is an external thread matched with the internal thread of the fastening nut (1), and the washer (2) is arranged between the fastening nut (1) and the measuring arm.

5. The wheel bolt elongation measuring tool according to claim 1, wherein the second measuring arm (7) is provided with a fixing screw (15) for fixing the sleeve of the dial indicator (17) ), a fixing through hole (16) is provided on the side of the second measuring arm (7), so that the fixing screw (15) vertically extends from the outer side of the second measuring arm (7) to the In the measuring hole (14), the end of the fixing screw (15) is in contact with the outer surface of the sleeve of the dial indicator (17) installed in the measuring hole (14), and the fixing through hole (16) The inner wall of ) is provided with an inner thread that matches with the outer thread of the fixing screw (15).

6. The wheel bolt elongation measuring tool according to claim 1, wherein the coarse adjustment assembly comprises two or more coarse adjustment sleeves (6) with different lengths, the coarse adjustment sleeves (6) ) is sleeved on the main measuring rod (4), and the second measuring arm (7) is installed on one side of the coarse adjustment sleeve (6) or between the coarse adjustment sleeves (6).

7. The tool for measuring the elongation of wheel bolts according to claim 6, wherein the inner wall of the coarse adjustment sleeve (6) is provided with a coarse adjustment keyway that matches the limit key (5). (8), so that the rotation of the coarse adjustment sleeve (6) along the circumferential direction of the main measuring rod (4) is restricted.