CN106378609A - Piston press-fitting device for piston air compressors - Google Patents

Piston press-fitting device for piston air compressors Download PDF

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Publication number
CN106378609A
CN106378609A CN201611138240.3A CN201611138240A CN106378609A CN 106378609 A CN106378609 A CN 106378609A CN 201611138240 A CN201611138240 A CN 201611138240A CN 106378609 A CN106378609 A CN 106378609A
Authority
CN
China
Prior art keywords
piston
press
loading
conical cavity
cylinder
Prior art date
Application number
CN201611138240.3A
Other languages
Chinese (zh)
Inventor
孙晓铮
陈晋凯
马欣
杨永燕
Original Assignee
中车洛阳机车有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中车洛阳机车有限公司 filed Critical 中车洛阳机车有限公司
Priority to CN201611138240.3A priority Critical patent/CN106378609A/en
Publication of CN106378609A publication Critical patent/CN106378609A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23POTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same

Abstract

The invention discloses a piston press-fitting device for piston air compressors. The press-fitting device comprises a left wall, a right wall, an upper wall and a lower wall; the left wall is arranged on the left side of the press-fitting device; the right wall is arranged on the right side of the press-fitting device; the upper wall is arranged at the upper part of the middle of the press-fitting device; the lower wall is arranged at the lower part of the middle of the press-fitting device; the left wall, the right wall, the upper wall and the lower wall form a cylindrical conical cavity with a large upper opening and a small lower opening; and the conical cavity has the conical degree being 1:8-1:12. With the press-fitting device, the problem of damage to outer surfaces of pistons and piston rings due to the fact that the piston rings are pressed one by one by the aid of a screwdriver can be solved, the device plays positioning and guiding roles when the pistons are pressed into gas cylinders, the pistons and the piston rings are protected and are prevented from being damaged, and the mounting quality during press-fitting of the pistons is greatly improved.

Description

A kind of piston press-loading apparatus of Piston Air Compressor

Technical field

The invention belongs to the piston technology of pressure mounting field of Piston Air Compressor is and in particular to a kind of piston pressure of Piston Air Compressor Assembling device.

Background technology

NPT5 type air compressor is piston reciprocating air compressor, be mainly used in brakes to railway locomotive with Auxiliary wind system provides wind regime.

NPT5 compressor is triplex, vertical, air-cooled, two stages of compression, and power is inputted by prime mover by shaft coupling, carries dynamic pressure Contracting machine crankshaft presses assigned direction rotation.Through the effect of connecting rod, make the piston being contained in wrist-pin end of connecting rod reciprocating in cylinder. The motion of piston constantly changes the volume being formed between top land and cylinder.In the presence of cylinder head air valve, enter The gas entering air compressor machine moves according to certain rule, forms the air compression process of air inlet → compression → aerofluxuss;Cylinder is pneumatics The major part of minimum cylinder volume is formed in machine., through grinding, there is higher surface roughness on groundwork surface.

High and low pressure two-stage piston is all formed using casting aluminium material casting, and each upper piston area is equipped with five road piston rings;Piston Ring is an obturator, plays a part cloth oil and heat conduction simultaneously, has good sealing and wearability.Due to piston ring certainly By under state, with diameter greater than cylinder bore diameter, piston is very laborious in installation process, using screwdriver top pressure piston ring ability one by one Piston can be filled in cylinder, often injure piston and piston ring face during using screwdriver top pressure, make piston Cause cylinder inner face to pull in motor process, reduce air compressors.

Content of the invention

The present invention, in order to solve above-mentioned technical problem, provides a kind of piston press-loading apparatus of Piston Air Compressor, its design knot Structure is simple, scientific and reasonable, easy to use.Using the high and low pressure cylinder scrapped, endoporus is processed, using scrapping high-pressure cylinder The piston press-loading apparatus of this Piston Air Compressor processed are it is adaptable to press-fit to high-pressure cylinder piston;Using scrapping low pressure The piston press-loading apparatus of this Piston Air Compressor that cylinder is processed, for press-fiting of low-pressure cylinder piston.

The technical solution adopted in the present invention is:A kind of piston press-loading apparatus of Piston Air Compressor, press-loading apparatus include a left side Wall, right wall, upper wall, lower wall;Left wall is arranged on the left side of press-loading apparatus, and right wall is arranged on the right side of press-loading apparatus, and upper wall is arranged On the top in the centre position of press-loading apparatus, lower wall is arranged on the bottom in press-loading apparatus centre position;Left wall, right wall, upper wall, under Wall forms upper opening greatly, the little columnar conical cavity of lower openings, and the taper of conical cavity is 1:8~1:12.

The taper of described conical cavity is 1:10.

The suitable for reading and lower mouth of described conical cavity is circle.

Described conical cavity is in the center entire body setting of press-loading apparatus, the interposition positioned at upper wall suitable for reading of conical cavity Put, the lower mouth of conical cavity is located at the centre position of lower wall.

The equal diameters of the diameter of mouth and piston-cylinder under described conical cavity, conical cavity suitable for reading with diameter greater than piston-cylinder Diameter.

Described press-loading apparatus 1 are processed using scrapping cylinder.

The process that press-fits of the piston press-loading apparatus of this Piston Air Compressor is:When in by installing piston into cylinder, first By the piston press-loading apparatus of this Piston Air Compressor, it is placed on institute's piston-cylinder to be mounted, then piston ring 9 is covered one by one It is contained on piston 8, finally by the conical cavity of the piston press-loading apparatus of this Piston Air Compressor, uniformly firmly piston is press fit into In piston-cylinder;Because conical cavity has certain taper, the piston press-loading apparatus of this Piston Air Compressor play guide-localization Effect, and be not in damage piston, piston ring phenomenon;For the piston-cylinder of different model, size, need to select to be wanted Install is the piston-cylinder of high pressure or low pressure, selects the piston press-loading apparatus of the Piston Air Compressor of corresponding size simultaneously, carries out The installation one by one of piston, above procedure be Piston Air Compressor piston press-loading apparatus press-fit process.

Described press-loading apparatus include left wall, right wall, upper wall, lower wall;Left wall is arranged on the left side of press-loading apparatus, and right wall is arranged On the right side of press-loading apparatus, upper wall is arranged on the top in the centre position of press-loading apparatus, and lower wall is arranged on press-loading apparatus interposition The bottom put;So setting main purpose be:On the one hand it is allowed to form the be aligned with certain taper by press-loading apparatus, lead To structure, protecting the piston ring on piston, in order to avoid damaging piston ring, being that piston can successfully be press fit into piston-cylinder simultaneously In, primarily serve alignment guide, and protect the effect of piston ring;On the other hand the cylinder of the high pressure or low pressure scrapped is made to obtain two Secondary utilization, had both improve the quality that press-fits press-fiting piston, had accomplished the effectively utilizes of waste again.

Described left wall, right wall, upper wall, lower wall form upper opening greatly, the little columnar conical cavity of lower openings, taper The taper in chamber is 1:8~1:12;So setting main purpose be:When one side press-fits piston to improve, piston be aligned is lived The accuracy of piston cylinder, the piston ring on protection piston, damages when not press-fited simultaneously;Another aspect conical cavity is provided with cone Degree, is because that the taper of conical cavity is bigger, piston is more smooth by conical cavity, piston is also more easy to align with piston gas Cylinder is simultaneously bigger to the dynamics of the protection of piston ring, it is to avoid to use screwdriver top pressure piston ring one by one, cause piston and work Plug ring appearance surface damage.

The taper of described conical cavity is 1:10;The taper of conical cavity is 1:It is the technology of optimal solve problem when 10 Scheme, is easiest to when at this moment press-fiting piston be directed at piston-cylinder, on piston and piston, the piston ring of suit is also easiest to smoothly press It is attached in piston-cylinder;The taper setting of conical cavity is too little, can make device excessive height and press-fit laborious, to piston ring during piston Do not have good protective effect;The taper setting of conical cavity is excessive, due to the piston-cylinder thickness of the high pressure scrapped or low pressure Degree, the restriction of height it is impossible to carry out the processing of conical cavity to the piston-cylinder scrapped, so selecting the taper of conical cavity to be 1:10 Conical cavity be optimal technical scheme.

Described conical cavity is in the center entire body setting of press-loading apparatus, the interposition positioned at upper wall suitable for reading of conical cavity Put, the lower mouth of conical cavity is located at the centre position of lower wall;The main purpose of so setting is to make the suitable for reading of conical cavity and lower mouth position On the vertical centrage scrapping piston-cylinder, conical cavity and piston-cylinder to be press-fited is made to keep vertical, so favourable Press-fit be aligned in carry out piston;When primarily serving in piston press-in cylinder, play positioning, guide effect, and to piston, work Plug ring is protected it is ensured that piston, piston ring are not damaged.

The equal diameters of the diameter of mouth and piston-cylinder under described conical cavity, conical cavity suitable for reading with diameter greater than piston-cylinder Diameter;The main purpose of so setting be in order to, when carrying out piston and press-fit operation, make piston very smoothly, rapidly right Quasi- piston-cylinder, primarily serves rapid alignment, the effect of guiding.

Described press-loading apparatus are the cylinders by the high-pressure cylinder scrapped or low pressure, through being processed in centre position further Conical cavity, forms the piston press-loading apparatus of Piston Air Compressor.

Beneficial effects of the present invention:The technical program provides a kind of piston press-loading apparatus of Piston Air Compressor, its design knot Structure is simple, scientific and reasonable, easy to use;Can solve the problem that using screwdriver top pressure piston ring one by one, cause outside piston and piston ring The problem of surface damage, when in piston press-in cylinder, plays positioning, guide effect, and piston, piston ring is protected, Ensure that piston, piston ring are not damaged, substantially increase installation quality when press-fiting piston.

Brief description

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the use state schematic diagram of the present invention;

In figure labelling:1st, press-loading apparatus, 2, left wall, 3, right wall, 4, upper wall, 5, lower wall, 6, conical cavity, 7, piston-cylinder, 8, live Plug, 9, piston ring.

Specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.

As illustrated, a kind of piston press-loading apparatus of Piston Air Compressor, press-loading apparatus 1 include left wall 2, right wall 3, upper wall 4, Lower wall 5;Left wall 2 is arranged on the left side of press-loading apparatus 1, and right wall 3 is arranged on the right side of press-loading apparatus 1, and upper wall 4 is arranged on and press-fits dress Put the top in 1 centre position, lower wall 5 is arranged on the bottom in press-loading apparatus 1 centre position;Left wall 2, right wall 3, upper wall 4, lower wall 5 form upper opening greatly, the little columnar conical cavity 6 of lower openings, and the taper of conical cavity 6 is 1:8~1:12.

The taper of described conical cavity 6 is 1:10.

The suitable for reading and lower mouth of described conical cavity 6 is circle.

Described conical cavity 6 is in the center entire body setting of press-loading apparatus 1, the centre positioned at upper wall 4 suitable for reading of conical cavity 6 Position, the lower mouth of conical cavity 6 is located at the centre position of lower wall 5.

The diameter of described 6 times mouths of conical cavity and the equal diameters of piston-cylinder 7, conical cavity 6 suitable for reading with diameter greater than piston The diameter of cylinder 7.

Described press-loading apparatus 1 are processed using scrapping cylinder.

The process that press-fits of the piston press-loading apparatus of this Piston Air Compressor is:When piston 8 is installed in piston-cylinder 7 When, first by the piston press-loading apparatus of this Piston Air Compressor, it is placed on institute's piston-cylinder 7 to be mounted, then by piston Ring 9 is sleeved on piston 8 one by one, finally by the conical cavity 6 of the piston press-loading apparatus of this Piston Air Compressor, uniformly firmly will Piston 8 is press fit in piston-cylinder 7;Because conical cavity 6 has certain taper, the piston of this Piston Air Compressor press-fits dress Put and play guide-localization effect, and be not in damage piston, piston ring phenomenon;Piston-cylinder for different model size 7, need select institute to be mounted be high pressure or low pressure piston-cylinder 7, simultaneously selection corresponding size Piston Air Compressor work Plug press-loading apparatus, carry out the installation one by one of piston 8, and above procedure is press-fiting of the piston press-loading apparatus of Piston Air Compressor Journey.

Embodiment one:

Left wall 2 is arranged on the left side of press-loading apparatus 1, and right wall 3 is arranged on the right side of press-loading apparatus 1, and upper wall 4 is arranged on press-loading apparatus The top in 1 centre position, lower wall 5 is arranged on the bottom in press-loading apparatus 1 centre position;Left wall 2, right wall 3, upper wall 4, lower wall 5 Form upper opening big, the little columnar conical cavity 6 of lower openings, the taper of conical cavity 6 is 1:8.

Embodiment two:

Left wall 2 is arranged on the left side of press-loading apparatus 1, and right wall 3 is arranged on the right side of press-loading apparatus 1, and upper wall 4 is arranged on press-loading apparatus The top in 1 centre position, lower wall 5 is arranged on the bottom in press-loading apparatus 1 centre position;Left wall 2, right wall 3, upper wall 4, lower wall 5 Form upper opening big, the little columnar conical cavity 6 of lower openings, the taper of conical cavity 6 is 1:10.

Embodiment three:

Left wall 2 is arranged on the left side of press-loading apparatus 1, and right wall 3 is arranged on the right side of press-loading apparatus 1, and upper wall 4 is arranged on press-loading apparatus The top in 1 centre position, lower wall 5 is arranged on the bottom in press-loading apparatus 1 centre position;Left wall 2, right wall 3, upper wall 4, lower wall 5 Form upper opening big, the little columnar conical cavity 6 of lower openings, the taper of conical cavity 6 is 1:12.

Claims (5)

1. the piston press-loading apparatus of a kind of Piston Air Compressor, press-loading apparatus include left wall, right wall, upper wall, lower wall;Left wall is arranged on The left side of press-loading apparatus, right wall is arranged on the right side of press-loading apparatus, and upper wall is arranged on the top in the centre position of press-loading apparatus, under Wall is arranged on the bottom in press-loading apparatus centre position;It is characterized in that:Left wall, right wall, upper wall, lower wall form upper opening greatly, The little columnar conical cavity of lower openings, the taper of conical cavity is 1:8~1:12.
2. a kind of Piston Air Compressor according to claim 1 piston press-loading apparatus it is characterised in that:The taper of conical cavity For 1:10.
3. a kind of Piston Air Compressor according to claim 1 piston press-loading apparatus it is characterised in that:Conical cavity suitable for reading It is circle with lower mouth.
4. a kind of Piston Air Compressor according to claim 1 piston press-loading apparatus it is characterised in that:Conical cavity is press-fiting The center entire body setting of device, the centre position positioned at upper wall suitable for reading of conical cavity, the lower mouth of conical cavity is located at lower wall Centre position.
5. a kind of Piston Air Compressor according to claim 1 piston press-loading apparatus it is characterised in that:Mouth under conical cavity Diameter and the equal diameters of piston-cylinder, the conical cavity diameter with diameter greater than piston-cylinder suitable for reading.
CN201611138240.3A 2016-12-12 2016-12-12 Piston press-fitting device for piston air compressors CN106378609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611138240.3A CN106378609A (en) 2016-12-12 2016-12-12 Piston press-fitting device for piston air compressors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611138240.3A CN106378609A (en) 2016-12-12 2016-12-12 Piston press-fitting device for piston air compressors

Publications (1)

Publication Number Publication Date
CN106378609A true CN106378609A (en) 2017-02-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611138240.3A CN106378609A (en) 2016-12-12 2016-12-12 Piston press-fitting device for piston air compressors

Country Status (1)

Country Link
CN (1) CN106378609A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB520142A (en) * 1938-10-11 1940-04-16 William Arthur Oubridge Means for facilitating the insertion into a cylinder of a piston fitted with piston rings
US20020069499A1 (en) * 2000-12-07 2002-06-13 Foster John R. Piston ring compressor tool system
CN2730569Y (en) * 2004-05-26 2005-10-05 覃显浩 Tool for installing piston ring
CN201183244Y (en) * 2008-04-23 2009-01-21 宁波市海达塑料机械有限公司 Oil cylinder piston ring assembling auxiliary device
CN201394733Y (en) * 2009-04-30 2010-02-03 宁波以赛亚汽车空压机有限公司 Assembling device of piston connecting rod component
CN203401452U (en) * 2013-06-27 2014-01-22 南京浦镇海泰制动设备有限公司 Air compressor piston installer
CN206263549U (en) * 2016-12-12 2017-06-20 中车洛阳机车有限公司 A kind of piston press-loading apparatus of Piston Air Compressor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB520142A (en) * 1938-10-11 1940-04-16 William Arthur Oubridge Means for facilitating the insertion into a cylinder of a piston fitted with piston rings
US20020069499A1 (en) * 2000-12-07 2002-06-13 Foster John R. Piston ring compressor tool system
CN2730569Y (en) * 2004-05-26 2005-10-05 覃显浩 Tool for installing piston ring
CN201183244Y (en) * 2008-04-23 2009-01-21 宁波市海达塑料机械有限公司 Oil cylinder piston ring assembling auxiliary device
CN201394733Y (en) * 2009-04-30 2010-02-03 宁波以赛亚汽车空压机有限公司 Assembling device of piston connecting rod component
CN203401452U (en) * 2013-06-27 2014-01-22 南京浦镇海泰制动设备有限公司 Air compressor piston installer
CN206263549U (en) * 2016-12-12 2017-06-20 中车洛阳机车有限公司 A kind of piston press-loading apparatus of Piston Air Compressor

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Application publication date: 20170208

RJ01 Rejection of invention patent application after publication