CN212824920U

CN212824920U - Quick positioning tool for high-pressure oil pipe of engine

Info

Publication number: CN212824920U
Application number: CN202021428064.9U
Authority: CN
Inventors: 张晓旭; 陈星屹; 邓贤波; 邹光华
Original assignee: Isuzu China Engine Co ltd; Qingling Motors Group Co Ltd
Current assignee: Isuzu China Engine Co ltd; Qingling Motors Group Co Ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-03-30
Anticipated expiration: 2030-07-20

Abstract

The utility model provides an engine high pressure fuel pipe fixes a position frock fast, include: the mounting bracket, be used for carrying on spacing fixture block and being used for fixing the locating pin on the engine cylinder lid with the mounting bracket to high pressure fuel pipe's horn mouth, locating pin and fixture block are all fixed on the mounting bracket with detachable mode. Owing to the setting of locating pin in this scheme to realize the fixed of installation piece and engine cylinder lid. Because the arrangement of the clamping block, the horn mouth of the high-pressure oil pipe is fixed by the clamping block, and when the horn mouth and the oil sprayer are screwed down, the stress on the periphery of the horn mouth is uniform, the oil sealing rubber sleeve can be effectively prevented from being broken or deformed, and the use safety of the engine is improved.

Description

Quick positioning tool for high-pressure oil pipe of engine

Technical Field

The utility model belongs to engine and relevant field especially relate to an engine high pressure fuel pipe fixes a position frock fast.

Background

The new generation of national six-diesel engine is innovated on the structure of high-pressure oil pipe and oil injector. Before innovation, after the external thread of the head of the oil sprayer is matched with the high-pressure oil pipe, the tightness is ensured by tightening torque of the high-pressure oil pipe; after the innovation, the sealing performance is ensured by tightening torque of the high-pressure oil pipe, and an oil sealing rubber sleeve is additionally arranged to ensure the sealing performance. However, the innovative sealing method also brings new problems: the horn mouth of the head of the high-pressure oil pipe is large in overall dimension, and the oil sealing rubber sleeve is arranged inside the horn mouth of the high-pressure oil pipe, so that observation is inconvenient. Namely, when the head of the high-pressure oil pipe is sleeved with the head thread of the oil injector, the horn mouth is manually sleeved with the head thread of the oil injector, the oil sealing rubber sleeve in the horn mouth is extruded and deformed or even broken due to the fact that force is not uniform manually in the screwing process, and the broken or deformed oil sealing rubber sleeve cannot be found due to the fact that the broken or deformed oil sealing rubber sleeve is in the horn mouth. With such a problematic engine, during the operation of the engine, fuel may seep out from the location of the crush, mix with the engine oil, and the engine oil amount rises, thereby causing serious safety problems, such as: the engine cannot be stopped.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, the utility model aims to provide an engine high pressure fuel pipe fixes a position frock fast for seal the oil gum cover when connecting high pressure fuel pipe and sprayer among the solution prior art and break the scheduling problem.

In order to realize above-mentioned purpose and other relevant purposes, the utility model provides an engine high pressure fuel pipe fixes a position frock fast, include: the mounting bracket, be used for carrying on spacing fixture block and being used for fixing the locating pin on the engine cylinder lid with the mounting bracket to high pressure fuel pipe's horn mouth, locating pin and fixture block are all fixed on the mounting bracket with detachable mode.

Furthermore, a pin hole is formed in the mounting frame, and the positioning pin is inserted into the pin hole and is in interference fit with the pin hole.

Furthermore, a plurality of mounting grooves for mounting the fixture blocks are formed in the side edge of the mounting frame.

Further, the fixture block top is fixed with the mounting bracket, semicircle-shaped dodge mouth and spacing mouth have been seted up to the fixture block bottom, dodge mouthful and spacing mouthful centre of a circle in same position, and dodge a mouthful diameter and be greater than spacing mouthful, spacing mouthful diameter and high pressure fuel pipe's horn mouth diameter phase-match.

Furthermore, the bottom end of the fixture block is also provided with two guide blocks which are convenient for the high-pressure oil pipe to enter, and the two guide blocks are distributed on two sides of the limit opening.

Furthermore, a guide opening is formed between the two guide blocks, and the width of the guide opening is gradually reduced to the diameter of the limiting opening along the direction of the limiting opening.

Further, the mounting bracket includes main part and stiff end, the fixture block is installed in the main part, the locating pin is installed on the stiff end.

Further, the main body and the fixed end are arranged in a staggered mode.

As above, the utility model discloses an engine high pressure fuel pipe fixes a position frock fast has following beneficial effect:

due to the arrangement of the positioning pin, the fixing of the mounting block and the engine cylinder cover is realized.

Because the arrangement of the clamping block, the horn mouth of the high-pressure oil pipe is fixed by the clamping block, and when the horn mouth and the oil sprayer are screwed down, the stress on the periphery of the horn mouth is uniform, the oil sealing rubber sleeve can be effectively prevented from being broken or deformed, and the use safety of the engine is improved.

Drawings

Fig. 1 is the embodiment of the utility model provides an in the front view of engine high pressure fuel pipe quick positioning frock.

Fig. 2 is the embodiment of the utility model provides an in the embodiment of the top view of engine high pressure fuel pipe quick positioning frock.

Fig. 3 is the embodiment of the utility model provides an in the embodiment back view of engine high pressure fuel pipe quick positioning frock.

Fig. 4 is a schematic structural view of a fixture block in an embodiment of the present invention.

Fig. 5 is a cross-sectional view taken at a-a in fig. 4.

Fig. 6 is the matching relation diagram of the rapid positioning tool for the high-pressure oil pipe of the engine in the embodiment of the utility model with the oil injector and the high-pressure oil pipe.

Fig. 7 is in the embodiment of the utility model provides an in the quick location frock of engine high pressure fuel pipe and high pressure fuel pipe, engine cylinder cap's cooperation relation plan view.

Fig. 8 the embodiment of the utility model provides an in engine high pressure fuel pipe quick positioning frock and high pressure fuel pipe, engine cylinder cap's cooperation relation front view.

Detailed Description

Reference numerals in the drawings of the specification include: the oil-gas-sealed engine oil cylinder comprises an installation frame 1, a positioning pin 2, a fixture block 3, an installation hole 301, a guide block 302, a limiting port 303, an avoiding port 304, a high-pressure oil pipe 4, an oil injector 5, a bell mouth 6, an oil-sealing rubber sleeve 7 and an engine cylinder cover 8.

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Examples

As shown in fig. 1 to 8, the embodiment provides a quick positioning tool for a high-pressure oil pipe of an engine, including: mounting bracket 1, locating pin 2 and fixture block 3. The positioning pin 2 and the fixture block 3 are both vertically fixed on the mounting frame 1. In the present embodiment, four fixture blocks 3 are provided.

As shown in fig. 2, the mounting bracket 1 includes a main body for mounting the latch 3 and a fixing end for mounting the aligning pin 2. The fixed end and the main body are arranged in a staggered mode so as to avoid other parts on the engine cylinder cover 8. The fixed end is provided with a pin hole for inserting the positioning pin 2, and the positioning pin 2 is in interference fit with the pin hole.

Referring to fig. 2 and 3, four mounting grooves for mounting the fixture block 3 are uniformly formed in the side wall of one side of the main body of the mounting frame 1, and fixing holes are formed in the mounting grooves.

As shown in fig. 4 and 5, the top end of the fixture block 3 is provided with a mounting hole 301, and the fixture block 3 is fixed to the mounting frame 1 through the mounting hole 301, a screw, and a fixing hole. Two semicircular openings are formed in the bottom end of the clamping block 3, and the circle centers of the two semicircular openings are located at the same position. One semicircular opening has a larger diameter than the other semicircular opening. The semicircular opening with the larger diameter is called an avoidance opening 304, the opening with the smaller diameter is called a limiting opening 303, the avoidance opening 304 is formed to avoid interference after the quick positioning tool of the engine high-pressure oil pipe 4 is installed on an engine oil cylinder in the embodiment, and the diameter of the limiting opening 303 is matched with the diameter of the horn mouth 6 of the high-pressure oil pipe 4. The bottom end of the fixture block 3 is further provided with two guide blocks 302 which are convenient for the bell mouth 6 to enter the limiting opening 303, and the two guide blocks 302 are respectively positioned at two sides of the limiting opening 303. A guide opening is formed between the two guide blocks 302, and the width of the guide opening is gradually reduced to the diameter of the limiting opening 303 towards the direction of the limiting opening 303.

During specific implementation, the high-pressure oil pipe 4 is manually preassembled at the corresponding threaded connection end of the fuel injector 5 and the common rail pipe, the fixture block 2 is directly clamped outside the bell mouth of the corresponding high-pressure oil pipe 4 connected with the fuel injector 5, and the positioning pin 2 is completely inserted into the positioning hole at the front end of the engine cylinder cover 8, so that the whole positioning tool is completely fixed, as shown in fig. 7 and 8. Then the bell mouth 6 is sleeved on the thread of the head part of the fuel injector 5 manually and is screwed tightly, so that the high-pressure fuel pipe 4 and the fuel injector 5 are fixed, as shown in figure 6. Because in this scheme in the in-process of screwing up sprayer 5 and high pressure fuel pipe 4, high pressure fuel pipe 4 has been fixed a position by the quick location frock of engine high pressure fuel pipe 4 in this scheme, compares with current direct screwing up, and the stress is even around the horn mouth 6 of high pressure fuel pipe 4 when screwing up, has reduced the damaged possibility of sealing oil gum cover 7, has just also increased the security of engine use.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides an engine high pressure fuel pipe fixes a position frock fast which characterized in that includes: the mounting bracket, be used for carrying on spacing fixture block and being used for fixing the locating pin on the engine cylinder lid with the mounting bracket to high pressure fuel pipe's horn mouth, locating pin and fixture block are all fixed on the mounting bracket with detachable mode.

2. The quick positioning tool for the high pressure oil pipe of the engine according to claim 1, wherein the mounting frame is provided with a pin hole, and the positioning pin is inserted into the pin hole and is in interference fit with the pin hole.

3. The quick positioning tool for the high pressure oil pipe of the engine according to claim 1, wherein a plurality of mounting grooves for mounting the fixture block are formed on the side edge of the mounting frame.

4. The quick positioning tool for the engine high-pressure oil pipe according to claim 1, wherein the top end of the fixture block is fixed with the mounting frame, the bottom end of the fixture block is provided with a semi-circular avoidance port and a limit port, the circle centers of the avoidance port and the limit port are in the same position, the diameter of the avoidance port is larger than that of the limit port, and the diameter of the limit port is matched with that of the bell mouth of the high-pressure oil pipe.

5. The quick positioning tool for the high pressure oil pipe of the engine according to any one of claims 1 to 4, wherein two guide blocks convenient for the high pressure oil pipe to enter are further arranged at the bottom end of the fixture block, and the two guide blocks are distributed on two sides of the limiting opening.

6. The quick positioning tool for the high-pressure oil pipe of the engine according to claim 5, wherein a guide opening is formed between the two guide blocks, and the width of the guide opening is gradually reduced to the diameter of the limiting opening along the direction of the limiting opening.

7. The quick positioning tool for the high pressure oil pipe of the engine according to claim 1, wherein the mounting frame comprises a main body and a fixed end, the fixture block is mounted on the main body, and the positioning pin is mounted on the fixed end.

8. The quick positioning tool for the high pressure oil pipe of the engine according to claim 7, wherein the main body and the fixed end are arranged in a staggered manner.