CN108680084B

CN108680084B - Detection tool for detecting ultrahigh signal tooth of automobile engine flywheel

Info

Publication number: CN108680084B
Application number: CN201810515506.4A
Authority: CN
Inventors: 王建锋
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2018-05-25
Filing date: 2018-05-25
Publication date: 2020-08-07
Anticipated expiration: 2038-05-25
Also published as: CN108680084A

Abstract

The invention relates to a tool for detecting the superelevation of a flywheel signal gear of an automobile engine, which comprises a tool body in an arc-shaped long strip shape, wherein the arc radius of the lower surface of the tool body is equal to the outer arc radius of a flywheel signal gear ring; one end of the tool body is a detection head, the other end of the tool body is a tool tail, and a handheld component is arranged on the upper surface of the tool body; the section of the head of the detection head is wedge-shaped, and a chamfer angle is arranged at the lower corner part; the height h of the lowest part of the head section of the detection head is lower than the height of the flywheel ultrahigh signal teeth. The invention can solve the problems that the existing tool is heavy, is not easy to move and cannot be used on a production line; the problems that the existing tool is slow in detection speed, limited in detection space and incapable of meeting production rhythm can be solved.

Description

Detection tool for detecting ultrahigh signal tooth of automobile engine flywheel

Technical Field

The invention relates to an automobile engine, in particular to a tool for detecting the ultrahigh signal tooth of a flywheel of an automobile engine.

Background

The engine flywheel signal tooth is a key part of normal operation of an engine, the direct consequence caused by the ultrahigh flywheel signal tooth is that the engine cannot be normally started, an electronic fuel injection system reports a fault signal, in the process of assembling an engine production line, a process flywheel is adopted in a running-in stage due to limitation of a rack, the flywheel is replaced by the running-in engine, whether the flywheel signal tooth is normal cannot be verified in the process, and in order to ensure normal operation of a factory engine and reduce the failure rate of the failed start caused by the flywheel signal tooth, whether the flywheel signal tooth is ultrahigh must be detected. "utensil is examined in jumping of flywheel ring gear excircle" that CN 205843521U announced includes the mount pad that extends along the horizontal direction, be provided with the location dabber of installation flywheel and the support of installation percentage table on the mount pad, the support is provided with fixed block and rotatory piece, be provided with the spacer pin on the fixed block, be provided with locking handle and percentage table on the rotatory piece, the disk form contact is equipped with on the percentage table. The product can be switched and detected quickly, and when the product is switched every time, the dial indicator resets, the contact positions of the contact and the flywheel tooth top are consistent, so that the consistency and the stability of the detection process are ensured; in addition, the contact of the dial indicator is changed into a circular sheet shape, so that when the flywheel rotates for detection and the contact is not separated from the measured tooth, the contact can be simultaneously contacted with the next adjacent tooth, the swing amplitude of the indicator is greatly reduced, the reading accuracy is improved, and the service life of the dial indicator is prolonged.

At present, the ultrahigh detection of the signal teeth of the flywheel mainly adopts a three-coordinate instrument or a vernier caliper and other appliances, the work is mainly completed when the flywheel enters the field for acceptance, and the flywheel which enters the field for acceptance is small in size, easy to carry and easy to detect. However, after the tool is assembled with an engine, the three-coordinate measuring instrument cannot be used for detection, and the vernier caliper is limited by space and has low detection precision, so that the existing detection tool has the following defects: firstly, the detection tool is heavy and cannot be operated on a production line; secondly, the detection speed of the detection tool is low, and the production rhythm cannot be met.

Disclosure of Invention

The invention aims to provide a tool for detecting the ultrahigh signal tooth of a flywheel of an automobile engine, which can solve the problems that the existing tool is heavy, is not easy to move and cannot be used on a production line; the problems that the existing tool is slow in detection speed, limited in detection space and incapable of meeting production rhythm can be solved.

The tool for detecting the ultrahigh signal tooth height of the flywheel of the automobile engine comprises a tool body in an arc-shaped long strip shape, wherein the arc radius of the lower surface of the tool body is equal to the outer arc radius of a flywheel signal tooth gear ring;

one end of the tool body is a detection head, the other end of the tool body is a tool tail, and a handheld component is arranged on the upper surface of the tool body; the section of the head of the detection head is wedge-shaped, and a chamfer angle is arranged at the lower corner part;

the height h of the lowest part of the head section of the detection head is lower than the height of the flywheel ultrahigh signal teeth.

Further, the tail of the tool is tilted upwards.

Further, establish the handheld component at frock body upper surface, including fixed connection the left handle on frock body left part and fixed connection the right handle on frock body right part.

Furthermore, the left handle and the right handle are consistent in shape and structure and are both in a semi-circular arc shape; the opening of left handle towards detect the head, the opening of right handle towards the frock afterbody.

The tool body, the left handle and the right handle are all made of stainless steel plates.

According to the detection tool, the left and right hand-held handles are welded with the tool body in a spot welding mode, when the detection tool is used, the left and right hand-held handles of the detection tool slide along the periphery of the signal teeth of the flywheel, when the detection tool meets ultrahigh signal teeth, the detection head collides with the ultrahigh teeth, and an operator is prevented from continuously sliding on the signal teeth, so that a faulty flywheel is detected.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of section A of FIG. 1;

FIG. 3 is a schematic structural diagram of a flywheel signal gear ring;

FIG. 4 is a schematic representation of detection using the present invention;

FIG. 5 is a schematic diagram of the detection of the present invention;

fig. 6 is an enlarged schematic view of a portion B of fig. 5.

In the figure: the method comprises the steps of 1, a detection tool, 2, an engine cylinder body component, 3, a flywheel, 11, a tool body, 12, a detection head, 13, a tool tail, 14, a left handle, 15, a right handle, 16, a chamfer, 17, a head section, 31, a flywheel normal signal tooth and 32, a flywheel ultrahigh signal tooth.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, the tool for detecting the superelevation of the flywheel signal gear of the automobile engine comprises a tool body 11 in an arc-shaped long strip shape, wherein the arc radius of the lower surface of the tool body 11 is equal to the outer arc radius of a flywheel signal gear ring;

one end of the tool body 11 is a detection head 12, the other end of the tool body is a tool tail 13, and a handheld component is arranged on the upper surface of the tool body 11; the head section 17 of the detection head 12 is wedge-shaped, and a chamfer 16 is arranged at the lower corner part of the detection head to prevent the detection head from damaging the surface of the signal tooth in the process of sliding along the flywheel signal tooth;

the height h of the lowest part of the head section 17 of the detection head 12 is lower than the height of the flywheel ultrahigh signal tooth 32, so that the detection precision is improved.

Frock afterbody 13 perks upwards to reduce the area of contact of the lower surface of frock body and signal tooth ring gear circumference, reduce frictional force, increase the slip smoothness nature, prevent afterbody fish tail signal tooth surface.

The handheld component arranged on the upper surface of the tool body 11 comprises a left handle 14 fixedly connected to the left part of the tool body 11 and a right handle 15 fixedly connected to the right part of the tool body 11.

The left handle 14 and the right handle 15 are consistent in shape and structure and are both in a semi-circular arc shape; the opening of the left handle 14 faces the detection head 12, and the opening of the right handle 15 faces the tool tail 13. The degree of agreeing with is very high with user's both hands to be semi-circular arc's left handle and right handle to guarantee the stability that the user was handheld, and be difficult for droing.

The tool body 11, the left handle 14 and the right handle 15 are all made of stainless steel plates. Such as SU310S or SU301, not only has high strength, but also is not easy to deform.

Referring to fig. 3, 4, 5 and 6, during detection, a user holds the left handle 14 and the right handle 15 of the detection tool 1 by hand, then fits on the circumference of the signal gear ring of the flywheel 3 (the flywheel 3 is connected to the engine cylinder component in a matching way), and slides along the direction of the detection head 12, clings to the circumference of the signal gear ring to smoothly pass through the normal signal gear 31 of the flywheel; when the section 17 of the detection head 12 meets the flywheel ultrahigh signal tooth 32, the sliding trend of the detection tool 1 is blocked and stopped due to collision, and the fault flywheel is found.

Claims

1. The utility model provides a detect frock that is used for automobile engine flywheel signal tooth superelevation, characterized by: the tool comprises a tool body (11) in an arc-shaped long strip shape, wherein the arc radius of the lower surface of the tool body (11) is equal to the outer arc radius of a flywheel signal gear ring;

one end of the tool body (11) is a detection head part (12), the other end of the tool body is a tool tail part (13), and a handheld component is arranged on the upper surface of the tool body (11); the head section (17) of the detection head (12) is wedge-shaped, and a chamfer (16) is arranged at the lower corner part; the height h of the lowest part of the head section (17) of the detection head (12) is lower than the height of the flywheel ultrahigh signal tooth (32); the tail part (13) of the tool is tilted upwards;

the handheld component arranged on the upper surface of the tool body (11) comprises a left handle (14) fixedly connected to the upper surface of the left part of the tool body (11) and a right handle (15) fixedly connected to the upper surface of the right part of the tool body (11).

2. The tool for detecting the tooth height of the automobile engine flywheel signal according to claim 1, wherein the tool is characterized in that: the left handle (14) and the right handle (15) are consistent in shape and structure and are both in a semi-circular arc shape; the opening of left handle (14) towards detect head (12), the opening of right handle (15) towards frock afterbody (13).

3. The tool for detecting the tooth height of the automobile engine flywheel signal according to claim 1 or 2, wherein the tool is characterized in that: the tool body (11), the left handle (14) and the right handle (15) are all made of stainless steel plates.