CN213632034U

CN213632034U - Engine fuel sprayer protrusion height detection device

Info

Publication number: CN213632034U
Application number: CN202022416579.3U
Authority: CN
Inventors: 梁雄伟; 梁杰; 梁业; 李进; 曹振才
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-07-06
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses a device for detecting the protrusion height of an engine oil nozzle, which comprises a support frame, a cylinder and a measuring device, wherein the cylinder is fixed on the support frame, and the measuring device is fixed at the end part of a telescopic rod of the cylinder; the measuring device comprises a seat plate, a base plate, an elastic resetting device and a displacement sensor, wherein the lower surface of the seat plate is fixedly connected with the end part of the telescopic rod of the air cylinder, a positioning plate is also fixed on the lower surface, and the displacement sensor is fixed on the positioning plate; the upper surface of the seat plate is provided with 2 substrates, and the upper end surfaces of the 2 substrates are flush; the elastic reset device is connected with the seat plate in a sliding manner; and the measuring end of the displacement sensor is connected with the lower end of the elastic resetting device. The utility model has the advantages of compact structure, accurate measurement, high efficiency and the like.

Description

Engine fuel sprayer protrusion height detection device

Technical Field

The utility model relates to a salient height detects instrument technical field, especially relates to an engine fuel sprayer protrusion height detection device.

Background

At present, when an engine is produced, the protruding height of an oil nozzle needs to be detected, the protruding height of the oil nozzle needs to be proper and too small, an oil line is easy to spray to the bottom surface of a cylinder cover, and the temperature of fuel oil is too low to influence mixing due to low temperature of the cylinder cover; if the protrusion height is too large, the oil nozzle is easily overheated. However, the protrusion height of the oil injection nozzle of the existing engine is mostly measured manually, so that the efficiency is low, the accuracy is poor, and the requirement of high-quality production is not facilitated.

The above background disclosure is only provided to aid in understanding the concepts and technical solutions of the present invention, and it does not necessarily belong to the prior art of the present patent application, and it should not be used to assess the novelty and inventive step of the present application without explicit evidence that the above content has been disclosed at the filing date of the present patent application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compact structure, measure accurate, efficient engine support fuel sprayer protrusion height detection device.

Therefore, the utility model provides an engine fuel sprayer protrusion height detection device.

Preferably, the present invention may also have the following technical features:

a device for detecting the protrusion height of an engine oil nozzle comprises a support frame, an air cylinder and a measuring device, wherein the air cylinder is fixed on the support frame, and the measuring device is fixed at the end part of a telescopic rod of the air cylinder; the measuring device comprises a seat plate, a base plate, an elastic resetting device and a displacement sensor, wherein the lower surface of the seat plate is fixedly connected with the end part of the telescopic rod of the air cylinder, a positioning plate is also fixed on the lower surface, and the displacement sensor is fixed on the positioning plate; the upper surface of the seat plate is provided with 2 substrates, and the upper end surfaces of the 2 substrates are flush; the elastic reset device is connected with the seat plate in a sliding manner; and the measuring end of the displacement sensor is connected with the lower end of the elastic resetting device.

Furthermore, the elastic reset device comprises a spring, a top block and a top rod, wherein the top block is detachably assembled at the upper end of the top rod; the upper part of the ejector rod is also provided with a limiting part; the seat plate is also provided with a vertically downward guide through hole, the spring is arranged at the lower part of the ejector rod, and the lower part of the ejector rod is arranged in the guide through hole in a sliding manner; the upper end of the spring is abutted against the limiting part edge, and the lower end of the spring is abutted against the seat plate; and the displacement sensor is in threaded connection with the lower end face of the ejector rod.

Further, the limiting part is a first limiting flange extending along the circumference of the ejector rod.

Further, the lower end of the ejector rod is provided with a second limiting flange.

Furthermore, the device also comprises a guide sleeve, wherein the guide sleeve is arranged between the ejector rod and the guide through hole, and the length of the guide sleeve is greater than the thickness of the guide through hole.

Furthermore, the inner hole of the guide sleeve is designed to be of a stepped hole structure, and the inner diameter of the upper part of the inner hole of the guide sleeve is matched with the diameter of the spring.

Furthermore, the inner hole of the guide sleeve is of a structure with two large ends and a small middle part; and a sliding block is arranged at the lower part of the inner hole of the guide sleeve.

Further, the ejector rod is of a stepped column structure with a small upper part and a large lower part.

The utility model discloses beneficial effect with the prior art contrast includes: through adopting electronic control equipment such as servo cylinder, displacement sensor, improve the degree of automation that the fuel sprayer protrusion height detected, work efficiency is high, and measures accurately.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a cross-sectional view of the measuring device of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following embodiments. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.

Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein like reference numerals refer to like parts, unless otherwise specified.

The device for detecting the protruding height of the engine oil nozzle shown in fig. 1-2 comprises a support frame 1, a servo cylinder 2 and a measuring device, wherein the cylinder 2 is fixed on the support frame 1, the measuring device is fixed at the end part of an expansion rod of the cylinder 2, and the measuring device is driven to be close to or far away from the oil nozzle through the expansion displacement of the cylinder 2, so that the protruding height of the oil nozzle is detected. Specifically, in this embodiment, the measuring device includes a seat plate 7, a base plate 11, an elastic resetting device, and a displacement sensor 4, wherein one end of the lower surface of the seat plate 7 is fixedly connected with the end of the telescopic rod of the cylinder, a U-shaped positioning plate 5 is further disposed at the other end of the lower surface opposite to the cylinder 2, and the U-shaped positioning plate 5 is fixed with the vertically arranged displacement sensor 4. The upper surface of the seat plate 7 is provided with 2 substrates 12 vertical to the plane, the 2 substrates 12 are respectively welded and fixed on two opposite sides of the seat plate 7, and the upper end surfaces of the 2 substrates 12 are flush. The seat plate 7 is also provided with a vertically downward guide through hole, the elastic reset device is movably arranged in the guide through hole, and the measuring end of the displacement sensor 4 is connected with the lower end of the elastic reset device.

The elastic reset device comprises a spring 10, an ejector block 12 and an ejector rod 8, wherein an external thread is arranged at the upper end of the ejector rod 8 and connected with the ejector block 12, and a limiting part is further arranged on the upper part of the ejector rod 8. The limiting part can be a nut screwed on the external thread of the ejector rod, and the limiting part can also be a first limiting flange 81 which is arranged on the rod body below the external thread of the ejector rod 8 and extends along the circumference of the ejector rod 8. The spring 10 is arranged at the lower part of the ejector rod 8, and then the lower rod body of the ejector rod 8 is arranged in the guide through hole in a sliding manner, so that the upper end surface of the spring 10 is abutted against the first limit flange 81, and the lower end surface is abutted against the seat plate 7. Thus, the upper part of the carrier rod 8 generates elastic force after being pressed. In order to avoid the phenomenon that the ejector rod 8 rises too high when elastically resetting upwards under the action of the resetting elastic force, the displacement sensor 4 is damaged. For this reason, the second stopper flange 82 is provided at the lower end of the jack 8 to restrict the upward displacement distance of the jack 8, thereby protecting the displacement sensor 4.

For further improving the stability of elastic resetting device, still including uide bushing 6, uide bushing 6 sets up between ejector pin 8 and the direction perforation, the length of uide bushing 6 is greater than the thickness of bedplate 7, extension direction stroke for the ejector pin 8 displacement is more steady, is difficult for the swing.

In a further improvement, the spring 10 is easily deformed due to lack of guidance, and the direction of the elastic force is not uniform. For this purpose, the structure of the guide sleeve 6 is improved, including designing the inner hole of the guide sleeve 6 to be a stepped hole structure, and the inner diameter of the upper part of the inner hole of the guide sleeve 6 is matched with the diameter of the spring 10. During the assembly, the lower extreme of spring 10 and the shoulder hole transition face butt of uide bushing 6, the hole upper portion of uide bushing 6 forms the direction of spring 10 to improve the stability in use of spring 10. In a preferred embodiment, the inner hole of the guide sleeve 6 is a structure with two large ends and a small middle part, so that a slide block 9 can be arranged at the lower part of the inner hole of the guide sleeve 6, and the ejector rod 8 is movably connected with the slide block 9 to reduce the friction resistance of the ejector rod 8 and the guide sleeve 6. In other improvement, the ejector rod 8 is in a stepped column structure with a small upper part and a large lower part.

The use method of the device for detecting the protruding height of the oil nozzle of the engine comprises the following steps:

during detection, the support frame 1 is moved to the position below an oil spray nozzle, the servo cylinder 2 is started, and the telescopic rod of the cylinder extends to be close to the oil spray nozzle until the upper end face of the base plate 11 is abutted to an engine cylinder cover and then stops extending; at this time, the projecting portion of the fuel injector abuts against the upper surface of the top block 12, and the spring 10 is compressed and contracted, so that the top rod 8 moves toward the displacement sensor 4, the displacement sensor 4 contracts, and the projecting height of the fuel injector is measured.

Those skilled in the art will recognize that numerous variations are possible in light of the above description, and therefore the examples and drawings are merely intended to describe one or more specific embodiments.

While there has been described and illustrated what are considered to be example embodiments of the present invention, it will be understood by those skilled in the art that various changes and substitutions can be made therein without departing from the spirit of the invention. In addition, many modifications may be made to adapt a particular situation to the teachings of the present invention without departing from the central concept described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents falling within the scope of the present invention.

Claims

1. The utility model provides an engine fuel sprayer protrusion height detection device which characterized in that: the device comprises a support frame, a cylinder and a measuring device, wherein the cylinder is fixed on the support frame, and the measuring device is fixed at the end part of a telescopic rod of the cylinder; the measuring device comprises a seat plate, a base plate, an elastic resetting device and a displacement sensor, wherein the lower surface of the seat plate is fixedly connected with the end part of the telescopic rod of the air cylinder, a positioning plate is also fixed on the lower surface, and the displacement sensor is fixed on the positioning plate; the upper surface of the seat plate is provided with 2 substrates, and the upper end surfaces of the 2 substrates are flush; the elastic reset device is connected with the seat plate in a sliding manner; and the measuring end of the displacement sensor is connected with the lower end of the elastic resetting device.

2. The engine injector protrusion height detection apparatus of claim 1, wherein: the elastic reset device comprises a spring, a top block and a top rod, and the top block is detachably assembled at the upper end of the top rod; the upper part of the ejector rod is also provided with a limiting part; the seat plate is also provided with a vertically downward guide through hole, the spring is arranged at the lower part of the ejector rod, and the lower part of the ejector rod is arranged in the guide through hole in a sliding manner; the upper end of the spring is abutted against the limiting part edge, and the lower end of the spring is abutted against the seat plate; and the displacement sensor is in threaded connection with the lower end face of the ejector rod.

3. The engine injector protrusion height detection apparatus of claim 2, wherein: the limiting part is a first limiting flange extending along the circumference of the ejector rod.

4. The engine injector protrusion height detection apparatus of claim 2, wherein: and the lower end of the ejector rod is provided with a second limiting flange.

5. The engine injector protrusion height detection apparatus of claim 2, wherein: the guide sleeve is arranged between the ejector rod and the guide through hole, and the length of the guide sleeve is larger than the thickness of the guide through hole.

6. The engine injector protrusion height detection apparatus of claim 5, wherein: the inner hole of the guide sleeve is designed to be of a stepped hole structure, and the inner diameter of the upper portion of the inner hole of the guide sleeve is matched with the diameter of the spring.

7. The engine injector protrusion height detection apparatus of claim 6, wherein: the inner hole of the guide sleeve is of a structure with two large ends and a small middle part; and a sliding block is arranged at the lower part of the inner hole of the guide sleeve.

8. The engine injector protrusion height detection apparatus of claim 2, wherein: the ejector pin is a ladder column structure with a small upper part and a big lower part.