CN213932440U

CN213932440U - Floating type multi-measuring-head measuring device for measuring protrusion height of oil sprayer

Info

Publication number: CN213932440U
Application number: CN202022558987.2U
Authority: CN
Inventors: 陈�峰; 莫启兴; 杨靖益; 温霞丽; 曾赞; 林逢阳; 韦栋
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-08-10
Anticipated expiration: 2030-11-09

Abstract

The utility model discloses a measuring device for the protrusion height of a floating multi-measuring-head fuel injector, which comprises a mounting bracket arranged on a bottom plate, wherein a first threaded hole and a second threaded hole of the mounting bracket are coaxially arranged above the second threaded hole; the floating spring sleeve is arranged on the fastening bolt and positioned between the bottom plate and the mounting bracket, and the mounting bracket is supported by the floating spring and can float up and down; the measuring head mounting base is fixedly arranged in the first threaded hole and comprises a through hole; the measuring rod is arranged in the through hole in a penetrating mode and comprises a rod head portion, a rod body portion and a threaded portion, and the threaded portion extends out of the measuring head mounting seat; the reset spring is sleeved on the rod body part and is positioned between the rod head part and the measuring head mounting seat; the displacement sensor is fixedly arranged on the second threaded hole, and the top end of the displacement sensor abuts against the bottom end of the measuring rod; wherein when a downward external force is applied to the measuring rod, the displacement sensor can measure the displacement of the measuring rod. Therefore, the convenience and the accuracy of measurement can be realized.

Description

Floating type multi-measuring-head measuring device for measuring protrusion height of oil sprayer

Technical Field

The utility model relates to an engine manufacturing and assembly field especially about a measuring device that is used for sprayer and cylinder cap bottom surface's the sprayer protrusion height of the floating many gauge heads of protrusion height value measurement.

Background

The engine requires measuring the protrusion height of the injector from the cylinder head during assembly (α as shown in fig. 1). The measured protrusion height value is not correct when the fuel injector is assembled, and the whole emission performance of the engine is influenced. At present, the projecting height of the oil injector is manually measured by adopting a dial indicator and a dial indicator seat, and the measured data cannot be recorded in real time; when the special measuring equipment is adopted to fix the sensor measuring component for measurement, the flatness precision of the sensor measuring component and the bottom surface of the cylinder cover is required to be very high, and the measurement of the protrusion height of the oil sprayer is inaccurate if the sensor measuring component and the bottom surface of the cylinder cover are not parallel and have errors. A method for measuring the protrusion height of the oil sprayer with the floating multi-measuring-head is urgently needed, the operation is convenient, and the measurement accuracy is improved.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a measuring device of sprayer bulge height of floating many gauge heads, its setting through floating many gauge heads can realize measuring convenience and accuracy.

In order to achieve the above object, the utility model provides a measuring device of sprayer bulge height of floating many gauge heads, including chassis, installing support, floating spring, gauge head mount pad, measuring stick, reset spring and displacement sensor. The chassis includes a bottom plate; the mounting bracket is arranged on the bottom plate through a fastening bolt and comprises a first threaded hole and a second threaded hole, and the first threaded hole and the second threaded hole are coaxially and concentrically arranged above the second threaded hole; the floating spring sleeve is arranged on the fastening bolt and is positioned between the upper plane of the bottom plate and the bottom surface of the mounting bracket, and the mounting bracket is supported by the floating spring and can float up and down; the measuring head mounting base is fixedly arranged in the first threaded hole and comprises a through hole; the measuring rod is arranged in the through hole in a penetrating mode and comprises a rod head portion, a rod body portion and a threaded portion, and the threaded portion extends out of the measuring head mounting seat; the reset spring is sleeved on the rod body part and is positioned between the rod head part and the measuring head mounting seat; the displacement sensor is fixedly arranged on the second threaded hole, and the top end of the displacement sensor abuts against the bottom end of the measuring rod; wherein when a downward external force is applied to the measuring rod, the displacement sensor can measure the displacement of the measuring rod.

In a preferred embodiment, the bottom plate of the chassis comprises a plurality of first mounting holes and a plurality of spacing holes; a plurality of first mounting holes are uniformly arranged around the avoidance hole in an encircling manner, and the lower part of the displacement sensor penetrates through the avoidance hole.

In a preferred embodiment, the upper part of the mounting bracket is in a U shape, the first threaded hole is arranged at the bottom of the U shape, the top surface of the U shape is a bracket top surface, the lower part of the mounting bracket is in an inverted pi shape, and the second threaded hole is arranged at the bottom of the inverted pi shape.

In a preferred embodiment, the mounting bracket further comprises a plurality of first assembling holes which are uniformly arranged at two sides of the inverted pi-shaped bottom, the positions of the plurality of first assembling holes are matched with the positions of the plurality of first mounting holes, and the fastening bolts are simultaneously arranged in the plurality of first assembling holes and the plurality of first assembling holes in a penetrating manner.

In a preferred embodiment, the gauge head mounting base further comprises a stepped hole, a convex edge part and an external thread; the stepped hole is coaxially and communicatively arranged at the upper part of the through hole with the through hole, and the diameter of the stepped hole is larger than that of the through hole; the convex edge part is arranged at the upper part of the measuring head mounting seat; the external thread is arranged at the lower part of the measuring head mounting seat, the diameter of the convex edge part is larger than that of the external thread, and the external thread extends to the root part of the convex edge part; wherein the lower end of the reset spring is propped and arranged in the step hole.

In a preferred embodiment, the diameter of the head of the measuring rod is larger than the diameter of the body and the diameter of the threaded portion, and the return spring is sleeved on the body and located between the bottom surface of the head and the stepped hole.

In a preferred embodiment, the device for measuring the projection height of the floating multi-measuring-head fuel injector further comprises a fastening nut and a mounting seat nut; the fastening nut is arranged on the thread part of the measuring rod, and the position height of the top surface of the head part of the rod can be adjusted by adjusting the fastening nut; the mounting seat nut is arranged on the fastening bolt, and the position of the top surface of the bracket of the mounting bracket can be adjusted by adjusting the mounting seat nut.

In a preferred embodiment, the top surface of the rod head is flush with the holder top surface or the top surface of the rod head is not lower than the holder top surface in the non-measuring state.

In a preferred embodiment, the bottom frame further comprises side panels and a top panel; the side plates are arranged on two sides of the bottom plate and have a certain inclination; the top plate is arranged on the side plate; wherein the inclination of curb plate can guarantee that the roof does not take place to interfere with the installing support.

In a preferred embodiment, the top plate comprises a second mounting hole for connection to a frame of the measuring device.

Compared with the prior art, the utility model discloses a measuring device of sprayer bulge height of floating many gauge heads has following beneficial effect: this scheme is through using fastening bolt, floating spring sets up the installing support on the chassis, passes through gauge head mount pad and reset spring setting with the measuring stick on the installing support again, and with the top surface of measuring stick and the top surface adjustment parallel and level of installing support, the lower extreme of measuring stick supports the top of pushing up the displacement sensor in the installing support lower part, during the measurement with the bottom surface and the laminating of support top surface of cylinder head, the top surface of measuring stick is supported to the sprayer, displacement sensor is supported to the displacement through the measuring stick, displacement sensor's displacement volume both is sprayer protrusion height value, the utility model discloses a measuring device has overcome prior art and has had to overturn the cylinder head and put just can the measuring defect, has improved measuring convenience and accuracy simultaneously.

Drawings

FIG. 1 is a schematic view of a fuel injector protruding from a bottom surface of a cylinder head;

fig. 2 is a schematic structural diagram of a measuring device according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is an enlarged partial schematic view of FIG. 2;

FIG. 5 is a schematic cross-sectional view taken at B-B of FIG. 4;

fig. 6 is a schematic measurement diagram of a measurement device according to an embodiment of the present invention;

fig. 7 is a schematic front view of a chassis according to an embodiment of the present invention;

fig. 8 is a schematic perspective view of a chassis according to an embodiment of the present invention;

fig. 9 is a front schematic view of a mounting bracket according to an embodiment of the present invention;

fig. 10 is a perspective view of a mounting bracket according to an embodiment of the present invention;

fig. 11 is a schematic cross-sectional view of a stylus mounting base according to an embodiment of the present invention;

fig. 12 is a schematic front view of a measuring rod according to an embodiment of the present invention.

Description of the main reference numerals:

1-base frame, 101-base plate, 1011-first mounting hole, 1012-avoiding hole, 102-side plate, 103-top plate, 1031-second mounting hole, 2-mounting bracket, 201-first threaded hole, 202-bracket top surface, 203-first assembly hole, 204-second threaded hole, 3-measuring head mounting seat, 301-through hole, 302-step hole, 303-convex edge part, 304-external thread, 4-measuring rod, 401-rod head part, 402-rod body part, 403-threaded part, 5-fastening nut, 6-reset spring, 7-mounting seat nut, 8-floating spring, 9-fastening bolt, 10-displacement sensor, 11-cylinder cover, 1101-cylinder cover bottom surface, 12-oil sprayer, alpha-nozzle protrusion height.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 2 to 5, the device for measuring the protrusion height of a floating multi-probe fuel injector according to the preferred embodiment of the present invention mainly includes an underframe 1, a mounting bracket 2, a probe mounting seat 3, a measuring rod 4, a fastening nut 5, a return spring 6, a mounting seat nut 7, a floating spring 8, a fastening bolt 9, and a displacement sensor 10.

As shown in fig. 7 to 8, in some embodiments, the bottom chassis 1 includes a bottom plate 101, a side plate 102, and a top plate 103, and the bottom plate 101 includes a plurality of first mounting holes 1011 and a plurality of clearance holes 1012. The plurality of first mounting holes 1011 are uniformly arranged around the avoiding hole 1012, and the lower portion of the displacement sensor 10 passes through the avoiding hole 1012. The side plates 102 are disposed at both sides of the bottom plate 101, and the side plates 102 have a certain inclination. The top plate 103 is provided on the side plate 102. Wherein the angle of inclination of the side plates 102 ensures that the top plate 103 does not interfere with the mounting bracket 2. In some embodiments, the top plate 103 includes a second mounting hole 1031 for connection to a frame of a measurement device.

As shown in fig. 9 to 10, in some embodiments, the mounting bracket 2 is disposed on the base plate 101 by the fastening bolt 9, the mounting bracket 2 includes a first threaded hole 201 and a second threaded hole 204, and the first threaded hole 201 and the second threaded hole 204 are coaxially disposed above the second threaded hole 204. The upper portion of installing support 2 is the U font, and first screw hole 201 sets up in the bottom of U font, and the top surface of U font is support top surface 202, and the lower part of installing support 2 is the shape of falling pi, and second screw hole 204 sets up in the bottom of shape of falling pi. In some embodiments, the mounting bracket 2 further includes a plurality of first assembly holes 203 uniformly disposed at both sides of the bottom of the inverted pi shape, positions of the plurality of first assembly holes 203 match positions of the plurality of first mounting holes 1011, and fastening bolts 9 are simultaneously inserted through the plurality of first assembly holes 203 and the plurality of first assembly holes 203.

As shown in fig. 11, in some embodiments, the stylus mounting block 3 further includes a stepped bore 302, a ledge 303, and external threads 304. A stepped hole 302 is provided in an upper portion of the through hole 301 coaxially and communicatively with the through hole 301, the diameter of the stepped hole 302 being larger than that of the through hole 301. The projecting portion 303 is provided at an upper portion of the stylus mounting base 3. The external thread 304 is provided on the lower portion of the gauge head mounting base 3, the diameter of the flange portion 303 is larger than the diameter of the external thread 304, and the external thread 304 extends up to the root of the flange portion 303. Wherein the lower end of the return spring 6 is arranged in the stepped hole 302 in an abutting mode.

As shown in fig. 11, in some embodiments, the shaft head portion 401 of the measuring shaft 4 has a diameter larger than the shaft portion 402 and the threaded portion 403, and the return spring 6 is fitted over the shaft portion 402 and between the bottom surface of the shaft head portion 401 and the stepped hole 302.

Referring to fig. 2 to 5, in some embodiments, the floating spring 8 is sleeved on the fastening bolt 9, which is located between the upper plane of the bottom plate 101 and the bottom surface of the mounting bracket 2, and the mounting bracket 2 is supported by the floating spring 8 and can float up and down. Gauge head mount pad 3 sets firmly in first screw hole 201, includes through-hole 301 on the gauge head mount pad 3. The measuring rod 4 is inserted into the through hole 301, the measuring rod 4 includes a head portion 401, a body portion 402, and a threaded portion 403, and the threaded portion 403 extends out of the stylus mounting base 3. The return spring 6 is sleeved on the rod body part 402 and is positioned between the rod head part 401 and the measuring head mounting seat 3. The displacement sensor 10 is fixedly arranged on the second threaded hole 204, and the top end of the displacement sensor 10 abuts against the bottom end of the measuring rod 4. Wherein the displacement sensor 10 is capable of measuring the amount of displacement of the measuring rod 4 when a downward external force is applied to the measuring rod 4.

In some embodiments, the device for measuring the protrusion height of the floating multi-measuring-head fuel injector further comprises a fastening nut 5 and a mounting seat nut 7. The fastening nut 5 is provided on the threaded portion 403 of the measuring rod 4, and the positional height of the top surface of the rod head 401 can be adjusted by adjusting the fastening nut 5. The mount nut 7 is provided on the fastening bolt 9, and the position of the bracket top surface 202 of the mounting bracket 2 can be adjusted by adjusting the mount nut 7.

As shown in fig. 6, in some embodiments, in the non-measuring state, the top surface of the rod head 401 is flush with the holder top surface 202 or the top surface of the rod head 401 is not lower than the holder top surface 202.

In some embodiments, the mounting bracket 2 of the present embodiment is disposed on the underframe 1 through four fastening bolts 9, mounting seat nuts 7 and floating springs 8, and the four floating springs 8 are respectively disposed at four corners of the bottom of the mounting bracket 2, such a mounting form can enable the mounting bracket 2 to have a floating type, and the bracket top surface 202 of the mounting bracket 2 can be attached to the bottom surface of the cylinder cover well enough to overcome mounting deviation or wear and other factors during measurement, so as to ensure the accuracy of the measurement reference.

In some embodiments, the tension of the floating spring 8 is much greater than the tension of the return spring 6, since the measuring rod 4 is disposed on the mounting bracket 2, and the mounting bracket 2 has floatability depending on the support of the floating spring 8, when the measuring rod 4 is moved downward by a downward external force against the displacement sensor 10, since the tension of the floating spring 8 is much greater than the tension of the return spring 6, the mounting bracket 2 itself does not follow the movement of the measuring rod 4 due to the downward movement. In other words, the tension of the return spring 6 is sufficient to support the measuring rod 4 to return, and the tension of the return spring 6 is negligible in relation to the tension of the floating spring 8.

Referring to fig. 6, in some embodiments, a method for measuring a protrusion height of a floating multi-probe fuel injector of the present invention is as follows:

firstly, the mounting bracket 2 is arranged on the underframe 1 through four fastening bolts 9, a mounting seat nut 7 and a floating spring 8. The stylus mounting block 3 is then mounted in the first threaded hole 201 of the mounting bracket 2. After the return spring 6 is sleeved on the measuring rod 4, the rod body part 402 and the thread part 403 of the measuring rod 4 penetrate through the step hole 302 and the through hole 301 of the measuring head mounting seat 3, the upper end of the return spring 6 sleeve abuts against the rod head part 401, and the lower end abuts against the inside of the step hole 302. And is fixed to the threaded portion 403 with two fastening nuts 5. The mount nut 7 is adjusted and measured with the leveling instrument so that the bracket top surface 202 of the mounting bracket 2 is in a horizontal plane. In the case of multiple mounting brackets 2, the bracket top surfaces 202 of the multiple mounting brackets 2 are coplanar and parallel to a horizontal plane. The fastening nut 5 is adjusted so that the top surface of the rod head 401 is flush with the holder top surface 202 or not lower than the holder top surface 202. The displacement sensor 10 is arranged in the second threaded hole 204 of the mounting bracket 2, the top end of the displacement sensor 10 is adjusted to be attached to the bottom end of the measuring rod 4, and the lower end of the displacement sensor 10, the wiring harness and the like penetrate through the clearance hole 1012 in the bottom plate 101 of the underframe 1. The measuring device is connected to the frame of the measuring apparatus through a second mounting hole 1031 in the top plate 103 of the chassis 1. The support top surface 202 of the measuring device is directly attached to the cylinder cover bottom surface 1101 of the cylinder cover 11 through an air cylinder or other lifting devices, at the moment, the oil injector 12 abuts against the top surface of the rod head 401 of the measuring rod 4 and overcomes the tension of the return spring 6 to enable the measuring rod 4 to move downwards, the measuring rod 4 moves downwards to abut against the displacement sensors 10, and when all the support top surfaces 202 are completely attached to the cylinder cover bottom surface 1101 by means of the floatability of the floating springs 8, the reading of each displacement sensor 10 is the protruding height value of the oil injector 12.

To sum up, the utility model discloses a measuring device of sprayer bulge height of floating many gauge heads has following beneficial effect: this scheme is through using fastening bolt, floating spring sets up the installing support on the chassis, passes through gauge head mount pad and reset spring setting with the measuring stick on the installing support again, and with the top surface of measuring stick and the top surface adjustment parallel and level of installing support, the lower extreme of measuring stick supports the top of pushing up the displacement sensor in the installing support lower part, during the measurement with the bottom surface and the laminating of support top surface of cylinder head, the top surface of measuring stick is supported to the sprayer, displacement sensor is supported to the displacement through the measuring stick, displacement sensor's displacement volume both is sprayer protrusion height value, the utility model discloses a measuring device has overcome prior art and has had to overturn the cylinder head and put just can the measuring defect, has improved measuring convenience and accuracy simultaneously. Moreover, the measuring device can greatly reduce the labor intensity of workers and improve the measuring efficiency.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The utility model provides a measuring device of sprayer protrusion height of floating many gauge heads which characterized in that includes:

a chassis including a bottom plate;

the mounting bracket is arranged on the bottom plate through a fastening bolt and comprises a first threaded hole and a second threaded hole, and the first threaded hole and the second threaded hole are coaxially and concentrically arranged above the second threaded hole;

the floating spring is sleeved on the fastening bolt, is positioned between the upper plane of the bottom plate and the bottom surface of the mounting bracket, and the mounting bracket is supported by the floating spring and can float up and down;

the measuring head mounting base is fixedly arranged in the first threaded hole and comprises a through hole;

the measuring rod penetrates through the through hole, the measuring rod comprises a rod head part, a rod body part and a threaded part, and the threaded part extends out of the measuring head mounting seat;

the return spring is sleeved on the rod body part and is positioned between the rod head part and the measuring head mounting seat; and

the displacement sensor is fixedly arranged on the second threaded hole, and the top end of the displacement sensor is abutted against the bottom end of the measuring rod;

wherein the displacement sensor is capable of measuring a displacement amount of the measuring rod when a downward external force is applied to the measuring rod.

2. The device for measuring the protrusion height of a floating multi-stylus fuel injector of claim 1, wherein the bottom plate of the chassis comprises:

a plurality of first mounting holes; and

and the first mounting holes are uniformly arranged around the avoidance hole in an encircling manner, and the lower part of the displacement sensor penetrates through the avoidance hole.

3. The device for measuring the protrusion height of a floating multi-measuring-head fuel injector according to claim 2, wherein the upper portion of the mounting bracket is U-shaped, the first threaded hole is formed in the bottom of the U-shape, the top surface of the U-shape is a bracket top surface, the lower portion of the mounting bracket is inverted pi-shaped, and the second threaded hole is formed in the bottom of the inverted pi-shaped.

4. The device for measuring the projection height of the fuel injector with the floating multi-measuring head as claimed in claim 3, wherein the mounting bracket further comprises a plurality of first assembling holes which are uniformly arranged at both sides of the inverted pi-shaped bottom part, the positions of the plurality of first assembling holes are matched with the positions of the plurality of first assembling holes, and the fastening bolts are simultaneously inserted into the plurality of first assembling holes and the plurality of first assembling holes.

5. The apparatus for measuring the protrusion height of a floating multi-stylus fuel injector of claim 3, wherein the stylus mounting base further comprises:

a stepped hole provided at an upper portion of the through hole coaxially and communicatively with the through hole, the stepped hole having a diameter larger than that of the through hole;

a protruding edge portion provided at an upper portion of the gauge head mounting base; and

the external thread is arranged at the lower part of the measuring head mounting seat, the diameter of the convex edge part is larger than that of the external thread, and the external thread extends to the root part of the convex edge part;

wherein the lower end of the reset spring is arranged in the step hole in an abutting mode.

6. The apparatus for measuring the protrusion height of a floating multi-probe fuel injector of claim 5, wherein the diameter of the rod head of the measuring rod is larger than the diameter of the rod body and the diameter of the threaded portion, and the return spring is sleeved on the rod body and located between the bottom surface of the rod head and the stepped hole.

7. The apparatus for measuring the protrusion height of a floating multi-stylus fuel injector of claim 5, further comprising:

a fastening nut provided on the threaded portion of the measuring rod, the positional height of the top surface of the rod head being adjustable by adjusting the fastening nut; and

and the mounting seat nut is arranged on the fastening bolt, and the position of the top surface of the bracket of the mounting bracket can be adjusted by adjusting the mounting seat nut.

8. The device for measuring the projection height of a floating multiterminal fuel injector according to claim 5, characterized in that in a non-measuring state, the top surface of said rod head is flush with said holder top surface or the top surface of said rod head is not lower than said holder top surface.

9. The device for measuring the protrusion height of a floating multi-stylus fuel injector of claim 1, wherein the chassis further comprises:

side plates disposed at both sides of the bottom plate, the side plates having an inclination; and

a top plate disposed on the side plate;

wherein the inclination angle of curb plate can guarantee the roof not with installing support takes place to interfere.

10. The apparatus for measuring the protrusion height of a floating multi-stylus fuel injector of claim 9, wherein the top plate includes a second mounting hole for attachment to a frame of a measuring device.