CN110926310A - Distance measuring tool - Google Patents
Distance measuring tool Download PDFInfo
- Publication number
- CN110926310A CN110926310A CN201911413876.8A CN201911413876A CN110926310A CN 110926310 A CN110926310 A CN 110926310A CN 201911413876 A CN201911413876 A CN 201911413876A CN 110926310 A CN110926310 A CN 110926310A
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- China
- Prior art keywords
- positioning
- sleeve
- ejector rod
- distance measuring
- measuring tool
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
Abstract
The invention discloses a distance measuring tool, which comprises a positioning sleeve used for penetrating through a gearbox shell; the ejector rod is arranged in the positioning sleeve and used for moving along the positioning sleeve, and the outer end of the ejector rod is used for abutting against the pulse gasket; and the displacement detector is arranged on the positioning sleeve and connected with the inner end of the ejector rod. The distance measuring tool is simple in structure, can accurately measure the assembly gap distance of the rotating speed sensor, and solves the problem that the real-time running speed in a speedometer of the vehicle is inaccurate.
Description
Technical Field
The invention relates to the technical field of precision measurement, in particular to a distance measuring tool.
Background
The gearbox is one of the very important transmission components in the vehicle, and the measurement data of the rotating speed sensor at the output end of the gearbox is converted into the running speed in a speedometer of the vehicle so as to allow a driver to judge the running state of the vehicle.
At present, speed sensor locates the gearbox casing to a rotational speed for detecting the pulse packing ring's that is the gear form is known, and speed sensor belongs to precision instrument, and its best detection distance and installation accuracy have great influence to its testing result's precision, consequently, how to guarantee speed sensor's the accurate problem that the skilled person urgently awaits solution of measuring.
Disclosure of Invention
The invention aims to provide a distance measuring tool which is simple in structure, can accurately measure the assembly gap distance of a rotating speed sensor and solves the problem that the real-time running speed in a speedometer of a vehicle is inaccurate.
To achieve the above object, the present invention provides a distance measuring tool comprising: a positioning sleeve for penetrating through the transmission housing; the ejector rod is arranged in the positioning sleeve and used for moving along the positioning sleeve, and the outer end of the ejector rod is used for abutting against the pulse gasket; and the displacement detector is arranged on the positioning sleeve and connected with the inner end of the ejector rod.
Preferably, the positioning sleeve comprises: the sleeve body is used for penetrating through the gearbox shell, and the ejector rod is movably arranged in the sleeve body; the positioning block is connected with the sleeve body and used for abutting against the gearbox shell to fix the sleeve body; the locking mechanism is connected with the positioning block and used for fixing the displacement detector; the inner end of the ejector rod and the displacement detector penetrate through the positioning block.
Preferably, the sleeve body is internally provided with a first pore passage and a second pore passage which are communicated, the first pore passage is close to the positioning block, the diameter of the first pore passage is larger than that of the second pore passage, and a positioning annular surface is formed between the first pore passage and the second pore passage; the ejector rod is provided with a positioning shaft shoulder which is used for abutting against the positioning ring surface; when the positioning shaft shoulder is abutted against the positioning ring surface, the outer end of the ejector rod protrudes out of the second hole channel.
Preferably, the displacement detector is specifically a dial indicator; the locking mechanism includes: the top cover is used for connecting the dial indicator and provided with a support hole for placing a detection part of the dial indicator, a locking opening is formed in the first end of the top cover, and an external thread cylinder in threaded connection with the positioning block is formed in the second end of the top cover; the locking sleeve is sleeved at the first end of the top cover; and the locking bolt is connected with the locking sleeve and is abutted against the first end of the top cover.
Preferably, a spring which is sleeved on the ejector rod and abuts against the positioning shaft shoulder is arranged in the first pore channel, and the other end of the spring abuts against the locking mechanism.
Preferably, the inner end of the ejector rod is provided with a groove for inserting a measuring rod of a dial indicator.
Preferably, the outer end of the ejector rod is provided with a chamfer.
Compared with the prior art, the distance measuring tool provided by the invention obtains the assembly clearance distance of the rotating speed sensor by measuring the displacement of the ejector rod through the displacement detector. Specifically, when the ejector rod is in an outward extending state, the distance from the outer end of the ejector rod to the contact surface of the positioning sleeve and the transmission shell is used as a reference distance X, the outer end of the ejector rod moves relative to the positioning sleeve under the action of the teeth of the pulse washer along with the rotation of the pulse washer, meanwhile, the displacement detector measures the displacement Y of the ejector rod, and when the outer end of the ejector rod is abutted against the center of the spur surface of the teeth of the gear, the displacement detector measures the maximum Y of the displacementmaxThen, the maximum value Y of the displacement is subtracted from the reference distance XmaxThe assembly gap distance Z of the revolution speed sensor can be obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a connection structure between a positioning sleeve and a pin in a distance measuring tool according to the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic view of a mandrel of a distance measuring tool according to the present invention in an extended state;
FIG. 4 is a schematic view of a mandril of the distance measuring tool provided by the invention abutting against the center of a spur surface of a pulse washer;
wherein the content of the first and second substances,
01-gearbox shell, 02-pulse washer, 021-positive tooth surface, 022-side tooth surface, 1-positioning sleeve, 11-sleeve body, 111-first hole channel, 112-second hole channel, 113-positioning ring surface, 12-positioning block, 121-through hole, 13-locking mechanism, 131-top cover, 1311-locking opening, 1312-external thread cylinder, 1313-supporting hole, 132-locking sleeve, 1321-threaded hole, 133-locking bolt, 2-ejector rod, 21-positioning shaft shoulder, 22-groove, 3-dial indicator, 31-clamping sleeve, 32-measuring rod and 4-spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 4, fig. 1 is a schematic structural view illustrating a connection between a positioning sleeve and a push rod in a distance measuring tool according to the present invention; FIG. 2 is an exploded view of FIG. 1; FIG. 3 is a schematic view of a mandrel of a distance measuring tool according to the present invention in an extended state; fig. 4 is a schematic view illustrating that the ejector pin of the distance measuring tool provided by the present invention is pressed against the center of the spur surface of the pulse washer.
As shown in fig. 1 to 4, the distance measuring tool provided by the present invention mainly includes a positioning sleeve 1, a jack 2, and a displacement detector. The positioning sleeve 1 can penetrate through the gearbox shell 01, one end of the positioning sleeve is positioned on the outer side of the gearbox shell 01, the other end of the positioning sleeve is positioned on the inner side of the gearbox shell 01 and faces the pulse washer 02, and in addition, the positioning sleeve 1 can be abutted against the surface of the gearbox shell 01 to fix the relative positions of the positioning sleeve and the surface of the gearbox shell 01; the ejector rod 2 is arranged in the positioning sleeve 1 and can move, the outer end of the ejector rod 2 can extend out of the positioning sleeve 1 and abut against the surface of the gear teeth of the pulse gasket 02, the pulse gasket 02 is further contacted with the outer end of the ejector rod 2 in the rotating process, and the ejector rod 2 moves relative to the positioning sleeve 1, wherein when the ejector rod 2 is not contacted with the spur gear surface 021 yet and is in an extending state, the distance from the outer end of the ejector rod 2 to the contact surface of the positioning sleeve 1 and the gearbox shell 01 is a reference distance X; the displacement detector is arranged on the positioning sleeve 1 and connected with the inner end of the mandril 2, is used for measuring the displacement Y of the mandril 2 relative to the positioning sleeve 1, and indicates that the mandril 2 is just in an extending state when the displacement Y is equal to 0.
As shown in fig. 3 and 4, the working principle of the distance measuring tool is explained here with respect to its structural configuration: firstly, the locating sleeve 1 penetrates through the gearbox shell 01 and fixes the relative position of the locating sleeve 1 and the gearbox shell 01, then the pulse washer 02 is driven to rotate, the spur tooth surface 021 is contacted with the outer end of the ejector rod 2, and when the outer end of the ejector rod 2 is contacted with the center of the spur tooth surface 021, the maximum value Y of the displacement of the ejector rod 2 relative to the locating sleeve 1 is measured by the displacement detectormaxFinally, the maximum value Y of the displacement is subtracted from the reference distance XmaxThe assembly gap distance Z of the rotating speed sensor can be obtained.
It is worth mentioning that the rotation speed sensor is connected with the gearbox casing 01 through a gasket, and the positioning sleeve 1 is also connected with the gearbox casing 01 through the same gasket, when the assembly gap distance Z is smaller than the preset assembly gap distance Z of the rotation speed sensor0Then according to the difference (i.e. Z) of the above-mentioned two gap distances0-Z) to increase the thickness of the shim accordingly; when the assembly gap distance Z is larger than the preset assembly gap distance Z of the rotating speed sensor0Then, the difference between the two gap distances is used (i.e. Z-Z)0) Accordingly, the thickness of the spacer is reduced, and the rotating speed sensor outputs accurate real-time running speed to the speedometer of the vehicle in an optimal distance state.
In a first embodiment, as shown in fig. 1 and 2, the above-mentioned locator sleeve 1 comprises: the transmission comprises a sleeve body 11, a positioning block 12 and a locking mechanism 13, wherein the sleeve body 11 is used for penetrating through a transmission shell 01, one end of the sleeve body 11 extends towards a pulse gasket 02, and a mandril 2 is movably arranged in the sleeve body 11; the positioning block 12 is connected with the other end of the sleeve body 11, the cross-sectional dimension of the positioning block is larger than that of the sleeve body 11, the positioning block 12 can abut against the surface of the gearbox shell 01, the relative position of the sleeve body 11 and the gearbox shell 01 is further fixed, and the locking mechanism 13 is connected with the positioning block 12 and used for fixing the displacement detector.
It should be noted that the positioning block 12 should be provided with a through hole 121 for connecting the inner end of the push rod 2 with the displacement detector, that is, the inner end of the push rod 2 and the displacement detector should penetrate through the positioning block 12 to be connected; the positioning block 12 and the sleeve body 11 are preferably integrally formed.
In a second embodiment, as shown in fig. 1 and fig. 2, a first hole passage 111 and a second hole passage 112 are coaxially arranged inside the sleeve body 11, the first hole passage 111 and the second hole passage 112 are communicated with each other and penetrate through the sleeve body 11 for placing the carrier rod 2, wherein the first hole passage 111 is close to the positioning block 12, and the diameter of the first hole passage 111 is larger than that of the second hole passage 112, so that a positioning ring surface 113 is formed between the first hole passage 111 and the second hole passage 112; the intermediate portion of the jack 2 is provided with a positioning shoulder 21, and the positioning shoulder 21 can abut against the positioning ring surface 113 to restrict the outward extending state of the jack 2.
It should be noted that, when the positioning shoulder 21 abuts against the positioning ring surface 113, the outer end of the push rod 2 protrudes out of the second hole 112, and the axial distance from the outer end of the push rod 2 to the surface of the positioning block 12 for abutting against the transmission case 01 is the reference distance X; the diameter of the second hole 112 is preferably slightly larger than the diameter of the pin 2, and in order to avoid impurities entering the second hole 112, the end of the second hole 112 away from the positioning hole 12 is in clearance fit with the pin 2, that is, the diameter of the end of the second hole 112 away from the positioning hole 12 is approximately equal to the diameter of the pin 2.
In the third embodiment, as shown in fig. 1 to 4, the displacement detector is specifically a dial indicator 3; the locking mechanism 13 comprises a top cover 131, a locking sleeve 132 and a locking bolt 133, wherein the top cover 131 is provided with a supporting hole 1313, the supporting hole 1313 penetrates through the top cover 131 and is used for placing the detection part of the dial indicator 3, a first end of the top cover 131 is provided with a locking opening 1311, the locking opening 1311 extends from the edge of the top cover 131 to the supporting hole 1313 in the radial direction of the supporting hole 1313, and a second end of the top cover 131 is provided with an external threaded cylinder 1312 which can be detachably connected with the positioning block 12 through screwing, in other words, the outer end part or all of the through hole 121 of the positioning block 12 is provided with an internal thread; the locking sleeve 132 can be sleeved at the first end of the top cover 131, and a threaded hole 1321 matched with the locking bolt 133 is radially formed in the locking sleeve 132 so that the locking bolt 133 can abut against the first end of the top cover 131 along the radial direction of the locking sleeve 132 and can tighten the locking opening 1311, and then the position of the dial indicator 3 can be fixed.
Preferably, the first end of the top cover 131 is configured to be stepped to reduce the cross-sectional dimension of the first end of the top cover 131, and the first end of the top cover 131 can be elastically deformed to enable a hand to screw the locking bolt 133 with a small force to fix the detection portion of the dial indicator 3, and the second end of the locking sleeve 132 can be reduced in radial dimension to reduce the manufacturing cost.
The dial indicator 3 includes a display portion and a detection portion, wherein the detection portion has a clamping sleeve 31 and a measuring rod 32, the clamping sleeve 31 is connected with the display portion and sleeved on the measuring rod 32, and the measuring rod 32 can move relative to the clamping sleeve 31 so that the display portion can accurately display the displacement of the measuring rod 32; in addition, the locking bolt 133 fastens the clamping sleeve 31 by tightening the locking opening 1311, thereby fixing the dial indicator 3.
In the fourth embodiment, as shown in fig. 1 to 4, in order to keep the push rod 2 in the outward extending state all the time when the push rod 2 is not acted by the outside, the distance measuring tool further includes a spring 4, the spring 4 can be sleeved on the push rod 2 and is mainly located in the first hole 111, one end of the spring 4 abuts against the positioning shoulder 21, and the other end of the spring abuts against the locking mechanism 13, in the third embodiment, the other end of the spring 4 abuts against the end surface of the external thread cylinder 1312, when the push rod 2 is in the outward extending state, the spring 4 is still in the compressed state, and further the push rod 2 is limited from moving toward the positioning block 12, that is, when the external force acting on the push rod 2 is removed, the spring 4 can drive the push rod 2 to return to the outward extending state.
In the fifth embodiment, in order to connect the inner end of the ejector rod 2 with the measuring rod 32 of the dial indicator 3, as shown in fig. 2 and 3, the inner end of the ejector rod 2 is provided with a groove 22, the groove 22 enables the measuring rod 32 of the dial indicator 3 to be inserted, and further enables the measuring rod 32 to move along with the ejector rod 2, so that the dial indicator 3 can accurately measure the displacement Y of the ejector rod 2.
In the sixth embodiment, in order to facilitate the smooth transition of the jack 2 from the flank face 022 face to the spur face 021 of the pulse washer 02, the outer end of the jack 2 is provided with a chamfer, preferably, the angle of the chamfer is specifically set to 30 °, and of course, the chamfer may be a chamfer of other angles or a round chamfer.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The distance measuring tool provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. A distance measuring tool, comprising:
a positioning sleeve (1) for penetrating through the gearbox housing (01);
the ejector rod (2) is arranged in the positioning sleeve (1) and used for moving along the positioning sleeve (1), and the outer end of the ejector rod (2) is used for abutting against the pulse gasket (02);
and the displacement detector is arranged on the positioning sleeve (1) and connected with the inner end of the ejector rod (2).
2. Distance measuring tool according to claim 1, characterized in that the positioning sleeve (1) comprises:
the sleeve body (11) penetrates through the gearbox shell (01), and the ejector rod (2) is movably arranged in the sleeve body (11);
the positioning block (12) is connected with the sleeve body (11) and used for abutting against the gearbox shell (01) to fix the sleeve body (11);
a locking mechanism (13) connected with the positioning block (12) and used for fixing the displacement detector;
wherein, the inner end of the ejector rod (2) and the displacement detector penetrate through the positioning block (12).
3. The distance measuring tool of claim 2,
the sleeve body (11) is internally provided with a first hole passage (111) and a second hole passage (112) which are communicated, the first hole passage (111) is close to the positioning block (12), the diameter of the first hole passage (111) is larger than that of the second hole passage (112), and a positioning annular surface (113) is formed between the first hole passage (111) and the second hole passage (112);
the ejector rod (2) is provided with a positioning shaft shoulder (21) which is used for abutting against the positioning ring surface (113);
when the positioning shaft shoulder (21) is abutted against the positioning ring surface (113), the outer end of the ejector rod (2) protrudes out of the second hole channel (112).
4. The distance measuring tool of claim 3,
the displacement detector is specifically a dial indicator (3);
the locking mechanism (13) comprises:
the top cover (131) is used for being connected with the dial indicator (3), the top cover (131) is provided with a supporting hole (1313) used for placing a detection part of the dial indicator (3), a first end of the top cover (131) is provided with a locking opening (1311), and a second end of the top cover (131) is provided with an external thread cylinder (1312) in threaded connection with the positioning block (12);
the locking sleeve (132) is sleeved at the first end of the top cover (131);
a locking bolt (133) for connection with the locking sleeve (132) and abutting the first end of the top cover (131).
5. The distance measuring tool according to claim 3 or 4, wherein a spring (4) sleeved on the top rod (2) and abutting against the positioning shaft shoulder (21) is arranged in the first hole channel (111), and the other end of the spring (4) abuts against the locking mechanism (13).
6. Distance measuring tool according to claim 5, characterized in that the inner end of the ejector pin (2) has a recess (22) for the insertion of a measuring rod (32) of a dial gauge (3).
7. Distance measuring tool according to claim 6, characterized in that the outer end of the carrier rod (2) is provided with a chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911413876.8A CN110926310A (en) | 2019-12-31 | 2019-12-31 | Distance measuring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911413876.8A CN110926310A (en) | 2019-12-31 | 2019-12-31 | Distance measuring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110926310A true CN110926310A (en) | 2020-03-27 |
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ID=69854266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911413876.8A Pending CN110926310A (en) | 2019-12-31 | 2019-12-31 | Distance measuring tool |
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| Country | Link |
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| CN (1) | CN110926310A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414250A (en) * | 2020-11-17 | 2021-02-26 | 宝武集团马钢轨交材料科技有限公司 | Measuring tool for rim plate of train wheel and using method of measuring tool |
| CN114623748A (en) * | 2022-02-24 | 2022-06-14 | 王奇峰 | Automobile mold thickness detection equipment |
-
2019
- 2019-12-31 CN CN201911413876.8A patent/CN110926310A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414250A (en) * | 2020-11-17 | 2021-02-26 | 宝武集团马钢轨交材料科技有限公司 | Measuring tool for rim plate of train wheel and using method of measuring tool |
| CN114623748A (en) * | 2022-02-24 | 2022-06-14 | 王奇峰 | Automobile mold thickness detection equipment |
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