CN210135870U

CN210135870U - Engine valve clearance measuring tool

Info

Publication number: CN210135870U
Application number: CN201920602772.0U
Authority: CN
Inventors: 陈波; 李晓琪; 王彬; 吕怡; 金晔琪
Original assignee: Shanghai Volkswagen Powertrain Co Ltd
Current assignee: Shanghai Volkswagen Powertrain Co Ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-03-10
Anticipated expiration: 2029-04-28

Abstract

The utility model discloses an engine valve clearance measuring tool, which is characterized by comprising a fixing and measuring component and an auxiliary push rod, wherein the fixing and measuring component comprises support columns which are in one-to-one correspondence with engine valves, the support columns are fixed on a bottom plate, two dial indicators for measuring the clearances in different directions on the valve cross section are arranged on the bottom plate, the two dial indicators are fixed on a dial indicator bracket, the dial indicator bracket is movably connected with a slide rail, and the slide rail is fixed on the bottom plate; the auxiliary push rod comprises a loop bar, a push rod is arranged in the loop bar, a spring is arranged between the push rod and the end portion of the loop bar, a standard line is arranged on the push rod, and when the spring is compressed to a set length, the standard line is located on the end face of the loop bar. The utility model discloses avoided leading to the phenomenon that the result differed because of the testing personnel is different, got rid of the interference of artificial factor, be applicable to the engine of all models.

Description

Engine valve clearance measuring tool

Technical Field

The utility model relates to an engine valve clearance measuring tool belongs to mechanical measurement technical field.

Background

For the analysis of the engine which is returned in the market, the important parameter related to the analysis of the engine is the swing clearance of the valve, namely the clearance between a valve rod 7 and a valve guide 8 in the engine valve (shown in figure 1), and the bottom of the valve rod 7 is fixedly connected with a valve base 6 in the process of the disassembly analysis of the engine. At present, a measuring method of the valve swinging clearance adopts a manual method that a dial indicator is fixed on one side of a cross section direction of a valve rod 7 and a valve guide pipe 8, the other side of the cross section direction is manually pushed, and the displacement of the cross section direction after being stressed is measured by the dial indicator. Clearance is typically measured in both the transverse and longitudinal directions of the engine. The measurement result of the measurement method is greatly influenced by personal factors of operators, and the final measurement data is easily influenced.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the existing measuring method for the engine valve clearance has the problem of large error.

In order to solve the problems, the utility model provides an engine valve clearance measuring tool, which is characterized by comprising a fixing and measuring component and an auxiliary push rod, wherein the fixing and measuring component comprises support columns which are in one-to-one correspondence with the engine valves, the support columns are fixed on a bottom plate, two dial indicators for measuring the clearances in different directions on the cross sections of the valves are arranged on the bottom plate, the two dial indicators are fixed on a dial indicator bracket, the dial indicator bracket is movably connected with a slide rail, and the slide rail is fixed on the bottom plate; the auxiliary push rod comprises a loop bar, a push rod is arranged in the loop bar, a spring is arranged between the push rod and the end portion of the loop bar, a standard line is arranged on the push rod, and when the spring is compressed to a set length, the standard line is located on the end face of the loop bar.

The utility model discloses avoided leading to the phenomenon that the result differed because of the testing personnel is different, got rid of the interference of artificial factor, be applicable to the engine of all models.

The utility model discloses be convenient for staff's rapid survey engine valve sways clearance, easy operation, and the accuracy is high, is applicable to all engines that have the demand to measure the valve and sway the clearance.

Drawings

FIG. 1 is a cross-sectional view of an engine valve;

fig. 2 is a schematic view of a fixing and measuring assembly in the gap measuring tool provided by the present invention;

FIG. 3 is a schematic view of the mounting and measuring assembly in use;

FIG. 4 is a schematic view of a support post and valve as measured;

FIG. 5 is a schematic view of an auxiliary push rod;

FIG. 6 is a schematic view of the auxiliary push rod loading;

FIG. 7 is a schematic view of a lateral measurement gap;

fig. 8 is a schematic view of a longitudinal measurement gap.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

Examples

The present embodiment provides an engine valve clearance measuring tool, which includes a fixing and measuring component and an auxiliary push rod 9. The fixing and measuring assembly is shown in figure 2 and comprises supporting columns 10 which correspond to the engine valves one by one, the supporting columns 10 are fixed on the bottom plate 1, two dial indicators 5 for measuring gaps in different directions on the cross sections of the valves are arranged on the bottom plate 1, the two dial indicators 5 are fixed on the dial indicator support 4, the dial indicator support 4 is movably connected with the sliding rail 2, and the sliding rail 2 is fixed on the bottom plate 1. The auxiliary push rod 9 comprises a loop bar 9-1 as shown in fig. 5, a push rod 9-2 is arranged in the loop bar 9-1, a spring 9-3 is arranged between the push rod 9-2 and the end part of the loop bar 9-1, a standard line 9-4 is arranged on the push rod 9-2, and when the spring 9-3 is compressed to a set length, the standard line 9-4 is positioned on the end surface of the loop bar 9-1.

Before measurement and evaluation, the position state of the valve of the engine 3 to be measured is subjected to unified standardization, namely the end surface of the valve rod 7 is flush with the end surface of the valve guide pipe 8, as shown in fig. 1. The engine is then placed on the mounting and measuring assembly with the support posts 10 in one-to-one correspondence with the end faces of the valves, as shown in figures 3 and 4. Then, moving the two dial indicators 5 to a position close to one valve base 6 of the engine 3 to be tested, enabling the two dial indicators 5 to be close to the valve base 6 in the transverse direction and the longitudinal direction, and then pushing the valve base 6 by the auxiliary push rod 9 from two directions respectively, as shown in fig. 7 and 8; when pushing, the applied pushing force is required to make the standard line 9-4 on the push rod 9-2 level with the end surface of the loop bar 9-1 so as to ensure the consistency of the applied force, as shown in fig. 6. The value on the dial indicator 5, i.e. the width of the gap, is read.

Claims

1. The engine valve clearance measuring tool is characterized by comprising a fixing and measuring assembly and an auxiliary push rod (9), wherein the fixing and measuring assembly comprises supporting columns (10) which correspond to engine valves one by one, the supporting columns (10) are fixed on a bottom plate (1), two dial indicators (5) for measuring clearances in different directions on the cross sections of the valves are arranged on the bottom plate (1), the two dial indicators (5) are fixed on a dial indicator bracket (4), the dial indicator bracket (4) is movably connected with a slide rail (2), and the slide rail (2) is fixed on the bottom plate (1); the auxiliary push rod (9) comprises a loop bar (9-1), a push rod (9-2) is arranged in the loop bar (9-1), a spring (9-3) is arranged between the push rod (9-2) and the end portion of the loop bar (9-1), a standard line (9-4) is arranged on the push rod (9-2), and when the spring (9-3) is compressed to a set length, the standard line (9-4) is located on the end face of the loop bar (9-1).