CN201420662Y - Flange-thread connected tightening cross head - Google Patents

Flange-thread connected tightening cross head Download PDF

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Publication number
CN201420662Y
CN201420662Y CN2009201437000U CN200920143700U CN201420662Y CN 201420662 Y CN201420662 Y CN 201420662Y CN 2009201437000 U CN2009201437000 U CN 2009201437000U CN 200920143700 U CN200920143700 U CN 200920143700U CN 201420662 Y CN201420662 Y CN 201420662Y
Authority
CN
China
Prior art keywords
flange
piston rod
crosshead
head
locking nut
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
CN2009201437000U
Other languages
Chinese (zh)
Inventor
丁兆国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ENVIC (BENGBU) COMPRESSOR Co Ltd
Original Assignee
ENVIC (BENGBU) COMPRESSOR Co Ltd
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 ENVIC (BENGBU) COMPRESSOR Co Ltd filed Critical ENVIC (BENGBU) COMPRESSOR Co Ltd
Priority to CN2009201437000U priority Critical patent/CN201420662Y/en
Application granted granted Critical
Publication of CN201420662Y publication Critical patent/CN201420662Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a cross head component of a compressor, in particular to a flange-thread connected cross head, which comprises a cross head body (1), a tool screw (1), a locking nut (3),a gasket group (4), an adjusting gasket (5), a clearance adjusting gasket (6), a flange (7), a bolt (8) and a piston rod (9). The cross head body is connected with the piston rod via the bolt and theflange, and a pretension device for regulating pretension force between the piston rod and the flange is arranged between the locking nut and the flange and formed by the tool screw (2), the gasket group (4) and the adjusting gasket (5). The tightening cross head has compact structure and high reliability, adjusts dead center clearance and pretension force of the piston rod once when in assembly,and avoids adjusting the dead center clearance once again in later overhauling, thereby having extremely convenient utilization and greatly improved overall economy compared with direct threaded connection.

Description

Flange connecting thread fastening-type crosshead
Technical field
The utility model relates to a kind of compressor crosshead parts, particularly a kind of screw connected crosshead of a kind of flange that is used for mesohigh, big capacity compressors.
Background technique
Crosshead is the parts that connect the connecting rod do oscillating motion and reciprocating piston rod, play the guiding role, and the quality of its quality directly has influence on the proper functioning of compressor.In traditional crosshead, crosshead body with all adopt being connected of piston rod directly be threaded and and tight mode, accuracy of screw machining to crosshead body and piston rod is had relatively high expectations, and the pre-fastening moment of crosshead locking nut is wayward when assembling, also need use torque spanner.The tradition crosshead is applicable to small piston force compresses machine, along with the needs of large-scale compressor exploitation, researches and develops and a kind ofly can adapt to new structure crosshead large-scale compressor, that processing cost is low, easy to operate and become extremely urgent task.
The model utility content
The purpose of this utility model has provided a kind of screw connected crosshead of flange that is used for mesohigh, big capacity compressors, in disposable stop gap, the piston rod pretightening force adjusted of when assembling, to solve traditional crosshead machining accuracy height, inconvenient operation, can not adapt to the technical problem of large-scale compressor.
The utility model has been taked following technological scheme: a kind of flange connecting thread fastening-type crosshead, it comprises crosshead body and piston rod, it is characterized in that: crosshead body one end connects a flange, piston rod is provided with shoulder and cooperates with end face of flange formation location, piston rod pass behind the flange be arranged on crosshead body in the ground locking nut be connected cooperation, by locking nut and shoulder piston rod and flange Bing are fastened.Be provided with the gap spacer between crosshead body and the flange.
Based on technique scheme, can have following with further technological scheme:
Be laid with one group of pre-tieholen on the described locking nut, be provided with pre-tightening apparatus and the flange formed by instrument screw, pad group in each pre-tieholen and form pre-drive fit.Wherein instrument screw, pad group are evenly distributed in the nut, are used for regulating piston bar pretightening force.Described pad group is made up of steel plug, rubber stopper, spacer ring.
The utlity model has following beneficial effect: the utility model adopts the Dry Thread fastening-type, compact structure, machining accuracy is low, the assembling easy operating, the reliability height, can avoid adjusting once more the stop gap when disposable stop gap, the piston rod pretightening force adjusted during assembling, later on each maintenance, the macroeconomy tool that more directly is threaded improves a lot.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Be numbered among the figure: 1. crosshead body, 2. instrument screw, 3. locking nut, 4. pad group, 5. spacer, 6. gap spacer, 7. flange, 8. bolt, 9. piston rod.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
As shown in Figure 1, the utility model is a kind of flange connecting thread fastening-type crosshead, and it comprises: crosshead body 1, instrument screw 2, locking nut 3, pad group 4, spacer 5, gap spacer 6, flange 7, bolt 8, piston rod 9.
Flange 7 is located with the shoulder of an end of piston rod 9, uses locking nut 3 that flange 7 Bing are fastened on piston rod 9, between flange 7 and the crosshead body 1 gap spacer 6 is housed, and uses bolt 8 that flange 7 is fixed on the crosshead body 1.
Be laid with one group of pre-tieholen on the locking nut 3, be provided with pre-tightening apparatus and the flange 7 formed by instrument screw 2, pad group 4 in each pre-tieholen and form pre-drive fit, be provided with spacer 5 between locking nut 3 and the flange 7, wherein instrument screw 2, pad group 4 are used for regulating piston bar pretightening force.Wherein pad group 4 is made up of one group of steel plug, rubber stopper, spacer ring etc.
Size according to piston rod material and piston force is calculated the required elongation of piston rod pretension, design the spacer 5 of different-thickness, then 4 instrument screws 2 evenly are screwed into, pull down spacer 5 (thin pad) this moment, sound out to pack into spacer 5 (hassock) and continue to be screwed into instrument screw 2 to spacer 5 (hassock) just and pack into, instrument screw 2 can not be screwed into takes an advanced study into spacer place excesssive gap, causes piston rod 9 surrenders.Pack into behind the spacer 5 (hassock), back out 2,4 on instrument screw and get final product.

Claims (4)

1, a kind of flange connecting thread fastening-type crosshead, it comprises crosshead body (1) and piston rod (9), it is characterized in that: crosshead body (1) one end connects a flange (7), piston rod (9) is provided with shoulder and cooperates with flange (7) end face formation location, piston rod (9) passes flange (7) back and is arranged on the interior locking nut (3) of crosshead body and is connected cooperation, by locking nut and shoulder with piston rod and flange and fasten.
2, flange connecting thread fastening-type crosshead according to claim 1 is characterized in that: be provided with gap spacer (6) between crosshead body (1) and the flange (7).
3, flange connecting thread fastening-type crosshead according to claim 1 and 2, it is characterized in that: be laid with one group of pre-tieholen on the described locking nut (3), be provided with pre-tightening apparatus and the flange (7) formed by instrument screw (2), pad group (4) in each pre-tieholen and form pre-drive fit.
4, flange connecting thread fastening-type crosshead according to claim 3, it is characterized in that: described pad group (4) is made up of steel plug, rubber stopper, spacer ring.
CN2009201437000U 2009-03-31 2009-03-31 Flange-thread connected tightening cross head Expired - Lifetime CN201420662Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201437000U CN201420662Y (en) 2009-03-31 2009-03-31 Flange-thread connected tightening cross head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201437000U CN201420662Y (en) 2009-03-31 2009-03-31 Flange-thread connected tightening cross head

Publications (1)

Publication Number Publication Date
CN201420662Y true CN201420662Y (en) 2010-03-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009201437000U Expired - Lifetime CN201420662Y (en) 2009-03-31 2009-03-31 Flange-thread connected tightening cross head

Country Status (1)

Country Link
CN (1) CN201420662Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103671021A (en) * 2012-09-12 2014-03-26 中国石油化工股份有限公司 Elastic connection structure of piston rod and connection method of piston rod
CN104121185A (en) * 2014-08-06 2014-10-29 无锡压缩机股份有限公司 Piston rod and crosshead body connection adjusting structure
CN105364086A (en) * 2014-08-28 2016-03-02 安瑞科(蚌埠)压缩机有限公司 Measuring and machining method for open file in crosshead and auxiliary symmetry measuring device
CN106194660A (en) * 2016-09-20 2016-12-07 沈阳佳信压缩机制造有限公司 The flange connection that crosshead body is connected with piston rod
CN108825643A (en) * 2018-07-04 2018-11-16 蚌埠艾普压缩机制造有限公司 A kind of hydrogenation stations high pressure hydrogen compressor flange thread connection type crosshead

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103671021A (en) * 2012-09-12 2014-03-26 中国石油化工股份有限公司 Elastic connection structure of piston rod and connection method of piston rod
CN104121185A (en) * 2014-08-06 2014-10-29 无锡压缩机股份有限公司 Piston rod and crosshead body connection adjusting structure
CN105364086A (en) * 2014-08-28 2016-03-02 安瑞科(蚌埠)压缩机有限公司 Measuring and machining method for open file in crosshead and auxiliary symmetry measuring device
CN105364086B (en) * 2014-08-28 2018-03-02 安瑞科(蚌埠)压缩机有限公司 The measurement of crosshead internal arm, processing method and symmetry aided measurement device
CN106194660A (en) * 2016-09-20 2016-12-07 沈阳佳信压缩机制造有限公司 The flange connection that crosshead body is connected with piston rod
CN106194660B (en) * 2016-09-20 2018-01-02 沈阳佳信压缩机制造有限公司 The flange connection that crosshead body is connected with piston rod
CN108825643A (en) * 2018-07-04 2018-11-16 蚌埠艾普压缩机制造有限公司 A kind of hydrogenation stations high pressure hydrogen compressor flange thread connection type crosshead

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GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20100310