CN205689384U

CN205689384U - Equilibrated type crank gear

Info

Publication number: CN205689384U
Application number: CN201620461839.XU
Authority: CN
Inventors: 邓刚; 马静; 隋国亮; 张秋颖; 李宽
Original assignee: Shenyang Yuanda Compressor Co Ltd
Current assignee: Shenyang Yuanda Compressor Co Ltd
Priority date: 2016-05-20
Filing date: 2016-05-20
Publication date: 2016-11-16
Anticipated expiration: 2026-05-20

Abstract

This utility model relates to a kind of equilibrated type crank gear, including six groups of crankshaft connecting rod systems, six groups of crankshaft connecting rod systems use following arrangement form, from anti-drive end towards in terms of drive end, when compressor turns clockwise, six row crank throw phase angles press 0 degree, 240 degree, 120 degree, 120 degree, 240 degree, 0 degree of layout, when compressor inverse hour hands rotate, its phase angle presses 0 degree, 120 degree, 240 degree, 240 degree, 120 degree, 0 degree of layout, and it is provided with bearing supporting in the middle of adjacent two row crank throws, the utility model has the advantages that product has efficiency high, volume is little, noise is low, vibrate little, safe and reliable, the advantages such as cycle of operation length, it is applicable to there is impact, vibration, inclination is waved, there is salt fog, the special environments such as ocean high humility.

Description

Equilibrated type crank gear

Technical field

This utility model relates to reciprocating compressor technical field, and the equilibrated type bent axle particularly relating to a kind of reciprocating compressor passes Dynamic device.

Background technology

The most vertical traditional, Reciprocting piston compressor comprises Reciprocting piston compressor and includes labyrinth sealing type and resistance Filling in sealed, the equilibrated type crank gear of reciprocating compressor includes six groups of crankshaft connecting rod systems, each group of crankshaft-link rod machine Structure includes the crosshead on bent axle, link assembly, piston, piston rod, piston rod and crank-pin composition, and a crank-pin drives one Individual link assembly, a link assembly drives reciprocating motion of the pistons by crosshead parts, and adjacent two row crank throws become 180 degree Arranging, the most point-blank, there is spacing in the motion of its two row piston between the axis of i.e. two row pistons, each suite axle is even The inertia mass of the linkage left and right sides is identical, so that the inertia force of each group of crankshaft connecting rod system reaches to balance, but In any case adjust the inertia mass of the crankshaft connecting rod system left and right sides in this case, its moment of inertia produced is to obtain To balance, and in the middle of the crank throw of bent axle, bearing-free supports, and axle system amount of deflection is big；If cannot balancing inertia moment, compressor Will run under jiggly state, cause vibration, bearing bush abrasion can be caused time ill-conditioned serious, even result in parts Corrupted etc..Accordingly, it would be desirable to the arrangement form changing crankshaft connecting rod system solves problem above.

Utility model content

In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of equilibrated type crank gear, Eliminate moment of inertia, make that the vibration of vertical compressor group is little, operate steadily, be more suitable for shock and vibration, tilt to wave etc. special Environment.

This utility model adopts the following technical scheme that: a kind of equilibrated type crank gear, including six groups of crankshaft-link rods Mechanism, often group crankshaft connecting rod system comprises string crank throw, piston rod, piston and installation crosshead on the piston rod, its technology It is characterized by: described six groups of crankshaft connecting rod systems use following arrangement form, from anti-drive end towards in terms of drive end, works as compressor When turning clockwise, compressor by 0 degree, 240 degree, 120 degree, 120 degree, 240 degree, 0 degree of layout, is worked as successively in six row crank throw phase angles When rotating counterclockwise, 0 degree, 120 degree, 240 degree, 240 degree, 120 degree, 0 degree of layout, adjacent two row crank throws are pressed in six row crank throw phase angles Between be provided with bearing supporting, six pistons include big piston and valve piston, and six groups of crankshaft connecting rod systems include that big piston is bent Axle linkage and valve piston crankshaft connecting rod system, be provided with counterweight cushion block in the crosshead of valve piston crankshaft connecting rod system Group, until six groups of crankshaft connecting rod system quality are equal；Babbit layer is sprayed on two external cylindrical surfaces of crosshead.

Piston in described crankshaft connecting rod system uses the piston with cylinder labyrinth sealing type or cylinder backup seal formula Piston.

Spray babbit layer on two external cylindrical surfaces of described crosshead, be positioned at described babbit layer length and width side To the key seat in centre position for installing the crosshead pin being connected with connecting rod one end.

The utility model has the advantages that: unit through high precision test such as dynamic balancing, level and inclination mechanical running tests, Ensure product quality and high reliability and product efficiency is high, volume is little, floor space is little, noise is low, vibrate little, margin of safety Greatly, safe and reliable, cycle of operation is long, and integral level is in domestically leading status, and reaches international like product advanced level；Complete Fully-balanced compressor is applicable to have shock and vibration, inclination to wave, and has the special environment such as salt fog, ocean high humility, can extensively answer In boats and ships and ocean engineering environment, market prospect is considerable.

Accompanying drawing explanation

Fig. 1 is overall structure schematic diagram of the present utility model.

Reference is as follows: 1, bent axle 2, link assembly 3, crosshead 4, crank 5, counterweight cushion block group 6, piston rod 7, piston 8, crank throw.

Detailed description of the invention

As it is shown in figure 1, a kind of equilibrated type crank gear that this utility model example provides, often organize crankshaft connecting rod system Comprising string crank throw 8, piston rod 6, piston 7 and the crosshead 3 being arranged on piston rod 6, described six groups of crankshaft connecting rod systems are adopted With following arrangement form, from anti-drive end towards in terms of drive end, when compressor turns clockwise, six row crank throw 8 phase angles Successively by 0 degree, 240 degree, 120 degree, 120 degree, 240 degree, 0 degree of layout, when compressor inverse hour hands rotate, six row crank throw 8 phase places 0 degree, 120 degree, 240 degree, 240 degree, 120 degree, 0 degree of layout are pressed in angle, be provided with bearing and support between adjacent two row crank throws 8, six Piston 7 includes that big piston and valve piston, six groups of crankshaft connecting rod systems include big piston crankshaft connecting rod mechanism and valve piston bent axle Linkage, is provided with counterweight cushion block group 5 in the crosshead 3 of valve piston crankshaft connecting rod system, until six groups of crankshaft-link rod machines Structure quality is equal；Babbit layer is sprayed on 3 two external cylindrical surfaces of crosshead.

Piston 7 in described crankshaft connecting rod system uses the piston with cylinder labyrinth sealing type or cylinder backup seal formula Piston.

Spray babbit layer on 3 two external cylindrical surfaces of described crosshead, be positioned at described babbit layer length and width The key seat in centre position, direction is for installing the crosshead pin being connected with connecting rod one end.

Operation principle of the present utility model is: the most above-mentioned device and conventional symmetric equilibrated type bent axle Actuating device has significant difference, and two row crank throws 8 of conventional symmetric equilibrated type crank mechanism become 180 degree of layouts, and this practicality Novel middle crank mechanism includes six row crank throws 8, from anti-drive end towards in terms of drive end, when compressor turns clockwise, and six row 0 degree, 240 degree, 120 degree, 120 degree, 240 degree, 0 degree of layout, when compressor inverse hour hands rotate, its phase place are pressed in crank throw 8 phase angle Angle is pressed has bearing to support in the middle of 0 degree, 120 degree, 240 degree, 240 degree, 120 degree, 0 degree of layout, and adjacent two row；When bent axle 1 When all row reciprocating member quality are equal, the single order that each row reciprocating mass produces is disturbed power, is disturbed moment and second order is disturbed power, disturbed power Square is completely counterbalanced by, and increases intermediate bearing supporting between each column crank throw, makes the amount of deflection of axle system reduce, the most so-called complete Fully-balanced.

The above is preferred implementation of the present utility model, it is noted that for the ordinary skill of the art For personnel, on the premise of without departing from principle described in the utility model, it is also possible to make some improvements and modifications, these improve Also protection domain of the present utility model is should be regarded as with retouching.

Claims

1. an equilibrated type crank gear, including six groups of crankshaft connecting rod systems, often group crankshaft connecting rod system comprises string song Turn, piston rod, piston and installation crosshead on the piston rod, it is characterised in that: described six groups of crankshaft connecting rod systems use such as Under arrangement form, from anti-drive end towards in terms of drive end, when compressor turns clockwise, six row crank throw phase angles are pressed successively 0 degree, 240 degree, 120 degree, 120 degree, 240 degree, 0 degree of layout, when compressor inverse hour hands rotate, six row crank throw phase angles by 0 degree, 120 degree, 240 degree, 240 degree, 120 degree, 0 degree of layout, be provided with bearing supporting between adjacent two row crank throws.

2. according to the equilibrated type crank gear described in claim 1, it is characterised in that: six pistons include big piston and Valve piston, six groups of crankshaft connecting rod systems include big piston crankshaft connecting rod mechanism and valve piston crankshaft connecting rod system, bent at valve piston Counterweight cushion block group is installed, until six groups of crankshaft connecting rod system quality are equal in the crosshead of axle linkage；Crosshead two Babbit layer is sprayed on external cylindrical surface.