CN101326393B - 管接头锁定装置 - Google Patents

管接头锁定装置 Download PDF

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CN101326393B
CN101326393B CN2006800461868A CN200680046186A CN101326393B CN 101326393 B CN101326393 B CN 101326393B CN 2006800461868 A CN2006800461868 A CN 2006800461868A CN 200680046186 A CN200680046186 A CN 200680046186A CN 101326393 B CN101326393 B CN 101326393B
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component
joint
pipe
tapped
component parts
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CN101326393A (zh
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坪田宪士
山路道雄
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Fujikin Inc
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/005—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts comprising locking means for the threaded member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
    • F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
    • F16L19/0286—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall and being formed as a flange
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/04—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
    • F16L19/043—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection with additional sealing means
    • F16L19/046—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection with additional sealing means consisting of a soft ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
    • F16L27/0808—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation
    • F16L27/0824—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings
    • F16L27/0832—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings having axial bearings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5611—For control and machine elements
    • Y10T70/5615—Valve
    • Y10T70/5619—Locked stationary
    • Y10T70/5624—Externally mounted locking device
    • Y10T70/5628—Valve encasing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5611—For control and machine elements
    • Y10T70/5615—Valve
    • Y10T70/5619—Locked stationary
    • Y10T70/5637—With padlock
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5611—For control and machine elements
    • Y10T70/5854—Bolt, nut, stud, stud-cap
    • Y10T70/5867—Encased

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Joints With Pressure Members (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)

Abstract

本发明提供一种管接头锁定装置，能够防止管接头在拧紧后误被拧松，并且，即使是在管部件上作用了使其旋转的力的情况下，管接头的密封部件的密封性能也不会受损。包括第1构成部件(11)和第2构成部件(12)，其中，第1构成部件(11)包括：以不能相对旋转的方式安装在带外螺纹的接头部件(2)上的安装部(21)；从下侧抵靠在盖形螺母(5)的外周面上的罩部(22)；从下侧抵靠在管部件(3)上的连结部(23)，第2构成部件(12)包括：从上侧抵靠在盖形螺母(5)的外周面上的罩部(31)；从上侧抵靠在管部件(3)上的连结部(32)。第1构成部件(11)的连结部(23)和第2构成部件(12)的连结部(32)以固定在管部件(3)的从盖形螺母(5)突出的部分上的方式被连结。

Description

管接头锁定装置
技术领域
本发明涉及用于防止管接头在拧紧后误被拧松的管接头锁定装置。
背景技术
管接头是通过将带内螺纹的接头部件(盖形螺母)拧紧到带外螺纹的接头部件上、从而使带外螺纹的部件和管部件以夹置着密封部而相对的状态被连接的部件，作为防止该管接头在拧紧后误被拧松的锁定装置(锁定夹具)，专利文献1中公开了以下的结构：包括第1夹具部件和第2夹具部件，所述第1夹具部件具有：安装部，该安装部以不能相对旋转的方式安装在卡合部(wrench flat接头上搭扳手的平面)上，所述卡合部设在带外螺纹的接头部件上；连结部，该连结部与安装部相连设置，从单侧抵靠在带内螺纹的接头部件的外周面上，而所述第2夹具部件具有连结部，该连结部从另一单侧抵靠在带内螺纹的接头部件的外周面上，第1夹具部件的连结部和第2夹具部件的连结部经由带内螺纹的接头部件而被连结。
专利文献1：日本特开平8-105580号公报
发明内容
根据上述专利文献1的管接头锁定装置，虽然能够防止盖形螺母相对于带外螺纹的接头部件的卡合部的旋转，但由于对管部件相对于带外螺纹的接头部件的旋转或扭转完全没有考虑，因而在对管部件作用了使其旋转的力的情况下，管部件会在与带外螺纹的部件之间夹置着密封部的状态下旋转或扭转，这样，存在着密封性能受损的问题。
本发明的目的在于提供一种管接头锁定装置，能够防止管接头在拧紧后误被拧松，并且，即使是在管部件上作用了使其旋转的力的情况下，管接头的密封部件的密封性能也不会受损。
本发明的管接头锁定装置，用于防止管接头在拧紧后误被拧松，该管接头通过将带内螺纹的接头部件拧紧在带外螺纹的接头部件上，从而带外螺纹的接头部件和管部件以夹置着密封部相对的状态被连接，其特征在于，管接头锁定装置包括：第1构成部件，该第1构成部件包括：安装部，该安装部以不能相对旋转的方式安装在带外螺纹的接头部件上；罩部，该罩部与安装部相连设置，从单侧抵靠在带内螺纹的接头部件的外周面上；连结部，该连结部与罩部相连设置，从单侧抵靠在管部件的从带内螺纹的接头部件突出的部分上；第2构成部件，该第2构成部件包括：罩部，该罩部从另一单侧抵靠在带内螺纹的接头部件的外周面上；连结部，该连结部与罩部相连设置，从另一单侧抵靠在管部件的从带内螺纹的接头部件突出的部分上，第1构成部件的连结部和第2构成部件的连结部以固定在管部件的从带内螺纹的接头部件突出的部分上的方式被连结。
管接头例如被制成为包括：主体，其作为带外螺纹的接头部件；带凸缘的套管，其作为经由密封部(垫圈等)对接在上述主体上的管部件；盖形螺母，其作为嵌在套管外周上、螺纹结合在主体上的带内螺纹的接头部件。除此以外，各种结构的管接头也为众所知，根据本发明的管接头锁定装置，通过使其应对以安装部(在本发明中，“安装”是包括“嵌合”、“固定”意思的概念)的结构等为对象的管接头，从而使其适用于各种管接头中的每一种。
例如，作为带外螺纹的接头部件，有的在与管部件的对接端的相反侧的端部上，通过焊接等固定有管；有的在与管部件的对接端的相反侧的端部上，固定有带有阀等的流体控制仪器的通路的主体。在第一种情况下，在带外螺纹的接头部件上，通常形成有卡合部，在该卡合部的外周上卡合扳钳或扳手，第1构成部件的安装部最好形成为与该卡合部卡合的大致U字状。在第二种情况下，虽然安装部只要例如是抵靠在阀主体的底面上、通过螺纹结合固定在阀主体上的板状体即可，但并不限于此。无论怎样，在安装了锁定装置的状态下，能够防止带内螺纹的接头部件相对于带外螺纹的接头部件的旋转，并且，能够防止在外力作用于管部件的情况下的、管部件相对于带外螺纹的接头部件的旋转。
有时，第1构成部件的连结部包括：半圆筒部，该半圆筒部从单侧抵靠在管部件上；螺纹孔部，该螺纹孔部与半圆筒部的一侧相连，在该螺纹孔部上形成有供连结用螺栓螺纹结合的螺纹孔；贯通孔部，该贯通孔部与半圆筒部的另一侧相连，在该贯通孔部上形成有卡合爪卡合用贯通孔，第2构成部件的连结部包括：半圆筒部，该半圆筒部从另一单侧抵靠在管部件上；螺栓穿插部，该螺栓穿插部与半圆筒部的一侧相连，在该螺栓穿插部上形成有供连结用螺栓穿插的螺栓穿插孔；卡合爪，该卡合爪与半圆筒部的另一侧相连，该卡合爪的前端部以能够卡脱且能够转动的方式嵌入第1构成部件的连结部的卡合爪卡合用贯通孔中。
另外，也可以是第1构成部件的连结部包括：半圆筒部，该半圆筒部从单侧抵靠在管部件上；螺纹孔部，该螺纹孔部与半圆筒部的两侧分别相连，在该螺纹孔部上形成有供连结用螺栓螺纹结合的螺纹孔，而第2构成部件的连结部包括：半圆筒部，该半圆筒部从另一单侧抵靠在管部件上；螺栓穿插部，该螺栓穿插部与半圆筒部的两侧分别相连，在该螺栓穿插部上形成有供连结用螺栓穿插的螺栓穿插孔。
根据本发明的管接头锁定装置，由于第1构成部件和第2构成部件经由各构成部件的连结部而被连结，其中，第1构成部件具有以不能相对旋转的方式安装在带外螺纹的接头部件上的安装部、和与安装部相连设置、从单侧抵靠在带内螺纹的接头部件的外周面上的罩部，第2构成部件具有从另一单侧抵靠在带内螺纹的接头部件的外周面上的罩部，所以，不可能使带内螺纹的接头部件相对带外螺纹的接头部件旋转，能够防止管接头在拧紧后误被拧松。而且，由于第1构成部件相对于带外螺纹的接头部件不能相对旋转、第1构成部件的连结部和第2构成部件的连结部以固定在管部件的、从带内螺纹的接头部件突出的部分上的方式被连结，所以能够防止管部件相对于带外螺纹的接头部件的旋转，即使在管部件上作用了使其旋转的力，该力也不会对夹置在带外螺纹的接头部件与管部件之间的密封部造成影响，配管施工后因扭转而造成的密封不良不复存在，管接头能够持续保持其密封性能。
附图说明
图1是表示本发明的管接头锁定装置被安装在管接头上的状态的立体图。
图2是表示本发明的管接头锁定装置被安装至管接头的过程中状态的立体图。
图3是表示构成管接头锁定装置的第1构成部件的立体图。
图4是表示构成管接头锁定装置的第2构成部件的立体图。
图5是表示本发明的管接头锁定装置被安装在管接头上的状态的主视图。
图6是表示本发明的管接头锁定装置被安装在管接头上的状态的俯视图。
图7是表示本发明的管接头锁定装置被安装在管接头上的状态的右侧视图。
图8是表示本发明的管接头锁定装置被安装在管接头上的状态的左侧视图。
图9是表示以本发明的管接头锁定装置为对象的、管接头的一例的纵剖视图。
(符号说明)
1管接头
2第1管状接头部件(带外螺纹的接头部件)
2a卡合部
3第2管状接头部件(管部件)
4垫圈(密封部)
5盖形螺母(带内螺纹的接头部件)
10管接头锁定装置
11第1构成部件
12第2构成部件
13连结用螺栓
21安装部
22罩部
23连结部
24半圆筒部
25a螺纹孔
25螺纹孔部
26贯通孔部
26a卡合爪卡合用贯通孔
31罩部
32连结部
33半圆筒部
34螺栓穿插部
34a螺栓穿插孔
35卡合爪
具体实施方式
以下参照附图说明本发明的实施方式。
图9表示了以本发明的管接头锁定装置为对象的、管接头的一例。在该图中，管接头1包括：第1管状接头部件(带外螺纹的接头部件)2和第2管状接头部件(管部件)3；夹置在第1管状接头部件2的左端面与第2管状接头部件3的右端面之间的圆环状垫圈(密封部)4；从第2管状接头部件3一侧螺纹嵌合在第1管状接头部件2上的盖形螺母(带内螺纹的接头部件)5；保持垫圈4、且被保持在第1管状接头部件2上的保持架6；夹置在盖形螺母5的顶壁与第2管状接头部件3的凸缘部之间的止推环7。在各接头部件2、3的对接端面上，分别形成有垫圈推压用的环状突起2a、3a。
在第1管状接头部件2上，设有短六棱柱状的卡合部8，通过以扳手等保持卡合部8、使盖形螺母5旋转从而将其相对第1管状接头部件2拧紧，第1管状接头部件2和第2管状接头部件3被液密地结合。
另外，虽然在管接头1中存在各种形式，但各种形式存在以下的共同点，即，通过将带内螺纹的接头部件(通常为盖形螺母)5拧紧在带外螺纹的接头部件2上，使带外螺纹的接头部件2和管部件3在夹置着密封部4而相对的状态下连接。
图1至图8表示本发明的管接头锁定装置的一个实施方式。
本发明的管接头锁定装置10是用于防止管接头1在拧紧后误被拧松的锁定装置，该管接头锁定装置10包括：第1构成部件11，其以不能相对旋转的方式嵌在带外螺纹的接头部件2上；第2构成部件12，其以能够装拆的方式安装在第1构成部件11上，在被以连结用螺栓13拧紧前，能够相对第1构成部件11旋转；通过被以连结用螺栓13拧紧，该第2构成部件12被固定在第1构成部件11上。
图1以立体图表示管接头锁定装置10被安装在管接头1上的状态，图2以立体图表示在被以连结用螺栓13拧紧前、第2构成部件12相对第1构成部件11能够旋转的状态。图3以立体图表示第1构成部件11，图4以立体图表示第2构成部件12。图5至图8是管接头锁定装置10被安装在管接头1上的状态下的图，图5是主视图(从图1的左手边侧观察到的图)，图6是俯视图(从图1的上侧观察到的图)，图7是右侧视图(从图1的右手边侧观察到的图)，图8是左侧视图(从图1的左内侧观察到的图)。
第1构成部件11包括：安装部21，其以不能相对旋转的方式安装在带外螺纹的接头部件2上；罩部22，其与安装部21相连设置，从单侧(图中的下侧)抵靠在作为带内螺纹的接头部件的盖形螺母5的外周面上；连结部23，其与罩部22相连设置，从单侧(图中的下侧)抵靠在管部件3的从盖形螺母5突出的部分3a上。
第2构成部件12包括：罩部31，其从另一单侧(图中的上侧)抵靠在盖形螺母5的外周面上；连结部32，其与罩部31相连设置，从另一单侧(图中的上侧)抵靠在管部件3的从盖形螺母5突出的部分3a上。
第1构成部件11的安装部21形成为与设在带外螺纹的接头部件2的外周上的卡合部8相卡合的大致U字状。安装部21的相对壁21a、21a之间的间隔被制成与盖形螺母5的相对两面的宽度大致相同，安装部21的相对壁21a、21a的高度被制成与盖形螺母5的直径大致相同。在相对壁21a、21a的顶部上，设有从轴向与盖形螺母5的外周部相对的折弯缘部21b。
第1构成部件11的罩部22被制成细长板状。与此相对，第2构成部件12的罩部31被制成能够与第1构成部件11的板状罩部22搭接而覆盖盖形螺母5的倒U字状。
第1构成部件11的连结部23包括：从单侧抵靠在管部件3上的半圆筒部24；螺纹孔部25，其与半圆筒部24的一侧相连，在该螺纹孔部25上形成有供连结用螺栓13螺纹结合的螺纹孔25a；贯通孔部26，其与半圆筒部24的另一侧相连，在该贯通孔部26上形成有卡合爪卡合用贯通孔26a。
第2构成部件12的连结部32包括：抵靠在管部件3上的半圆筒部33；螺栓穿插部34，其与半圆筒部33的一侧相连，在该螺栓穿插部34上形成有供连结用螺栓13穿插的螺栓穿插孔34a；钩状的卡合爪35，其与半圆筒部33的另一侧相连，该卡合爪35的前端部以能够卡脱且能够转动的方式嵌入第1构成部件11的连结部23的贯通孔26a中。
在将该管接头锁定装置10安装到管接头1上时，首先，使第1构成部件11的安装部21嵌合在带外螺纹的接头部件2的卡合部8上，接着，将第2构成部件12的连结部32的卡合爪35嵌入第1构成部件11的连结部23的贯通孔26a(图2所示的状态)，接着，在将卡合爪35卡合在贯通孔26a中的状态下，使第2构成部件12相对第1构成部件11转动，使它们的连结部23、32彼此夹置着管部件3重合(图1中、不含连结用螺栓13的状态)，通过以连结用螺栓13将连结部23、32彼此紧固，这些连结部23、32以固定在管部件3的从盖形螺母5突出的部分上的方式被连结。
(工业实用性)
本发明提供能够防止管接头在拧紧后误被拧松的管接头锁定装置。管接头经常被使用在供给气体等流体的装置等的配管上，通过使用本发明的管接头锁定装置，配管施工后因扭转而造成的密封不良不复存在，管接头能够持续保持其密封性能。

Claims (3)

1.一种管接头锁定装置，用于防止管接头在拧紧后误被拧松，所述管接头通过将带内螺纹的接头部件拧紧在带外螺纹的接头部件上，从而带外螺纹的接头部件和管部件以夹置着密封部相对的状态被连接，其特征在于，
所述管接头锁定装置包括：
第1构成部件，该第1构成部件包括：安装部，该安装部以不能相对旋转的方式安装在带外螺纹的接头部件上；罩部，该罩部与安装部相连设置，从单侧抵靠在带内螺纹的接头部件的外周面上；连结部，该连结部与罩部相连设置，从单侧抵靠在管部件的从带内螺纹的接头部件突出的部分上；
第2构成部件，该第2构成部件包括：罩部，该罩部从另一单侧抵靠在带内螺纹的接头部件的外周面上；连结部，该连结部与罩部相连设置，从另一单侧抵靠在管部件的从带内螺纹的接头部件突出的部分上，
第1构成部件的连结部和第2构成部件的连结部以固定在管部件的从带内螺纹的接头部件突出的部分上的方式被连结。
2.如权利要求1所述的管接头锁定装置，其特征在于，
第1构成部件的安装部形成为与设在带外螺纹的接头部件的外周上的卡合部相卡合的大致U字状。
3.如权利要求1或2所述的管接头锁定装置，其特征在于，
第1构成部件的连结部包括：半圆筒部，该半圆筒部从单侧抵靠在管部件上；螺纹孔部，该螺纹孔部与半圆筒部的一侧相连，在该螺纹孔部上形成有供连结用螺栓螺纹结合的螺纹孔；贯通孔部，该贯通孔部与半圆筒部的另一侧相连，在该贯通孔部上形成有卡合爪卡合用贯通孔，
第2构成部件的连结部包括：半圆筒部，该半圆筒部从另一单侧抵靠在管部件上；螺栓穿插部，该螺栓穿插部与半圆筒部的一侧相连，在该螺栓穿插部上形成有供连结用螺栓穿插的螺栓穿插孔；卡合爪，该卡合爪与半圆筒部的另一侧相连，该卡合爪的前端部以能够卡脱且能够转动的方式嵌入第1构成部件的连结部的卡合爪卡合用贯通孔中。
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