CN104075054A - Hydraulic insulating joint - Google Patents
Hydraulic insulating joint Download PDFInfo
- Publication number
- CN104075054A CN104075054A CN201410303928.7A CN201410303928A CN104075054A CN 104075054 A CN104075054 A CN 104075054A CN 201410303928 A CN201410303928 A CN 201410303928A CN 104075054 A CN104075054 A CN 104075054A
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- China
- Prior art keywords
- insulating
- screw
- pressing plate
- connector body
- insulation sheet
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- 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.)
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Classifications
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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
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/02—Electrically insulating joints or couplings
- F16L25/026—Electrically insulating joints or couplings for flanged joints
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The invention discloses a hydraulic insulating joint for a movable steel rail flash welding machine. The hydraulic insulating joint comprises a left joint body, a right joint body, a medium insulating plate, a sealing ring, a left pressing plate, a right pressing plate, a left insulating plate, a right insulating plate, a left insulating ring, a right insulating ring, a left screw insulating sleeve, a right screw insulating sleeve, and a bolt set consisting of a screw and a nut; one end of the screw passes through a first screw hole in the left pressing plate, a first connecting hole in the left insulating plate, an inner hole in the left screw insulating sleeve, a third connecting hole in the medium insulating sheet, an inner hole in the right screw insulating sleeve, a second connecting hole in the right insulating plate and a second screw hole in the right pressing plate; the left joint body and the right joint body are integrally fixed through the nut; the matching end surface of the left joint body and the matching end surface of the right joint body are respectively pressed against two sides of the sealing ring. According to the hydraulic insulating joints, two ends are mutually insulated to stop harmful current; in addition, the sealing and insulating are reliable.
Description
Technical field
The present invention relates to a kind of hydraulic pressure insulating joint, relate in particular to a kind of mobile steel rail flash welder hydraulic pressure insulating joint.
Background technique
Between the left frame of mobile steel rail flash welder, right frame, keep the voltage difference of 7V left and right, just can carry out normal Flash Welding.Welding machine hydraulic circuit is across between left and right frame, conventional hydraulic joint is carbon steel and makes and conduct electricity, during welding, larger electric conduction fails to be convened for lack of a quorum and is passed to opposite side frame along wire braided hose, this affects the normal flash of light of welding machine on the one hand, each hydraulic parts all can be burnt by electric current on the other hand, as wire braided hose heating accelerated ageing, booster.
In the file that is 201020255685.1 in Chinese Patent Application No. disclosed " insulation high pressure joint for a kind of hydraulic power unit ", nylon spacer and spacer both sides O RunddichtringO form a kind of sealing configuration, and the nylon cap of nylon spacer and fittings body opposite side is realized insulation function simultaneously simultaneously.On the one hand, nylon compressive strength is lower, and nylon cap easily by conquassation, affects insulation effect under threaded pre-tightening power and action of hydraulic force; On the other hand, be threaded and there is no anti-loose structure, left and right fittings body thread joined structure is subject to outside rotating force (as oil pipe motion, other joints rotations) impact, and O shape circle impacting force reduces rapidly and causes leakage of oil.
Summary of the invention
The object of the present invention is to provide a kind of two ends mutually insulated, can stop deleterious current to pass through, and sealing, reliable hydraulic pressure insulating joint insulate.
In order to achieve the above object, technological scheme of the present invention is:
A kind of hydraulic pressure insulating joint, comprise left fittings body, right connector body, intermediate insulation sheet and seal ring, the connecting part of described left fittings body has the first collar flange radially, the connecting part of described right connector body has the second collar flange radially, described intermediate insulation sheet is arranged between left fittings body and right connector body, the counterface of the counterface of left fittings body and right connector body is pressed on respectively on two sides of intermediate insulation sheet, the inner chamber of described left fittings body and right connector body is communicated with by the mesopore of intermediate insulation sheet
A, also comprise left pressing plate, right pressing plate, left insulating trip, right insulating trip, left dead ring, right dead ring, left screw insulating bush, right screw insulating bush, and the bolt group that forms of screw and nut,
B, described left pressing plate have the first endoporus and several the first screw holes, and the first endoporus of described left pressing plate is nested with on left fittings body by left dead ring, and a side of described left pressing plate is pressed on by left insulating trip on the first collar flange of left fittings body,
C, described right pressing plate have the second endoporus and several the second screw holes, and the second endoporus of described right pressing plate is nested with on right connector body by right dead ring, and a side of described right pressing plate is pressed on by right insulating trip on the second collar flange of right connector body,
On the first collar flange of d, described left fittings body, have several the first mounting holes, described left screw insulating bush is contained in the first mounting hole,
On the second collar flange of e, described right connector body, have several the second mounting holes, described right screw insulating bush is contained in the second mounting hole,
On f, described left insulating trip, there is several the first attachment holes,
On g, described right insulating trip, there is several the second attachment holes,
H, described intermediate insulation sheet have several the 3rd attachment holes,
The first screw hole of left pressing plate is passed, the second screw hole of the endoporus of the first attachment hole of left insulating trip, left screw insulating bush, the 3rd attachment hole of intermediate insulation sheet, the endoporus of right screw insulating bush, the second attachment hole of right insulating trip, right pressing plate in one end of i, described screw, and by nut, left fittings body and right connector body are fixed together
The counterface of the counterface of j, described left fittings body and right connector body is pressed on respectively the both sides of seal ring.
The side of exerting pressure of exert pressure side and the nut of described screw head is all lined with spring washer.
Described seal ring is O RunddichtringO.
The external diameter of described seal ring is less than or equal to the median pore diameter of intermediate insulation sheet.
The mesopore inwall of the external diameter of described seal ring and intermediate insulation sheet offsets.
Described bolt group is 2-8 group.
Described bolt group is 4 groups.
Described left insulating trip, right insulating trip are identical with intermediate insulation chip architecture.
On described left fittings body, away from the first annular flange portion, there is the first outside thread and the first hexagon head, on described right connector body, away from the second annular flange portion, there is the second outside thread and the second hexagon head.
Technique effect:
Between left fittings body in the present invention, right connector body, adopt left pressing plate, right pressing plate, left insulating trip, right insulating trip to compress, fastening by Bolt Connection, therefore greatly increased the compression area of left insulating trip, right insulating trip, left insulating trip, right insulating trip are unlikely to by conquassation.Left insulating trip, right insulating trip and left dead ring, the structure of right dead ring is simpler, there is no complicated ledge structure, and manufacture processing is simple and convenient, can adopt the better epoxide resin material of insulating property to make.There is in addition following advantage: bolt group makes sealing surface compact power stable, can also make joint bear bigger bending moment, oil-proof under larger Moment; Screw-down torque when connecting external lug can not affect the impacting force of joint inner seal rings, so sealability is reliable and stable; Because insulating trip, dead ring, O type circle are separated each part, so mutual insulating between left fittings body and right connector body.Insulation system and sealing configuration are independent mutually, and insulation system is not affected by the hydraulic medium of joint internal flow, and sealing, insulation are reliably.Through test, insulation resistance of the present invention is greater than 500 megaohms, can effectively stop deleterious current to pass through.
Accompanying drawing explanation
The present invention is further detailed explanation for the embodiment who provides below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of hydraulic pressure insulating joint of the present invention;
Fig. 2 is left pressing plate in Fig. 1 or the structural representation of right pressing plate;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is left fittings body in Fig. 1 or the structural representation of right connector body;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is left insulating trip in Fig. 1 or the structural representation of intermediate insulation sheet or right insulating trip;
Fig. 7 is the B-B sectional view of Fig. 6.
Embodiment
As Fig. 1, 2, 3, 4, 5, 6, shown in 7, hydraulic pressure insulating joint of the present invention, comprise left fittings body 1, right connector body 8, intermediate insulation sheet 13 and seal ring 10, the connecting part of described left fittings body 1 has the first collar flange 1-1 radially, the connecting part of described right connector body 8 has the second collar flange 8-1 radially, described intermediate insulation sheet 13 is arranged between left fittings body (1) and right connector body 8, the counterface of the counterface of left fittings body 1 and right connector body 8 is pressed on respectively on two sides of intermediate insulation sheet 13, the inner chamber of described left fittings body 1 and right connector body 8 is communicated with by the mesopore of intermediate insulation sheet 13,
A, also comprise left pressing plate 4, right pressing plate 6, left insulating trip 5, right insulating trip 14, left dead ring 12, right dead ring 9, left screw insulating bush 11, right screw insulating bush 15, and the bolt group that forms of screw 2 and nut 7,
B, described left pressing plate 4 have the first endoporus 4-1 and several first screw holes 4-2, the first endoporus 4-1 of described left pressing plate 4 is nested with on left fittings body 1 by left dead ring 12, one side of described left pressing plate 4 is pressed on the first collar flange 1-1 of left fittings body 1 by left insulating trip 5
C, described right pressing plate 6 have the second endoporus 6-1 and several second screw holes 6-2, the second endoporus 6-1 of described right pressing plate 6 is nested with on right connector body 8 by right dead ring 9, one side of described right pressing plate 6 is pressed on the second collar flange 8-1 of right connector body 8 by right insulating trip 14
On the first collar flange 1-1 of d, described left fittings body 1, have several first mounting holes 1-2, described left screw insulating bush 11 is contained in the first mounting hole 1-2,
On the second collar flange 8-1 of e, described right connector body 8, have several second mounting holes 8-2, described right screw insulating bush 15 is contained in the second mounting hole 8-2,
On f, described left insulating trip 5, there is several first attachment holes 5-1,
On g, described right insulating trip 14, there is several second attachment holes 14-1,
H, described intermediate insulation sheet 13 have several the 3rd attachment hole 13-1,
The first screw hole 4-2, the first attachment hole 5-1 of left insulating trip 5 of left pressing plate 4, the endoporus of left screw insulating bush 11, the 3rd attachment hole 13-1 of intermediate insulation sheet 13, the endoporus of right screw insulating bush 15 are passed, the second screw hole 6-2 of the second attachment hole 14-1 of right insulating trip 14, right pressing plate 6 in one end of i, described screw 2, and by nut 7, left fittings body 1 and right connector body 8 are fixed together
The counterface of the counterface of j, described left fittings body 1 and right connector body 8 is pressed on respectively the both sides of seal ring 10.
As shown in Figure 1, the side of exerting pressure of exert pressure side and the nut 7 of described screw 2 heads is all lined with spring washer 3.Like this, further strengthened locking effect.
As shown in Figure 1, described seal ring 10 is O RunddichtringOs.
As shown in Figure 1, the external diameter of described seal ring 10 is less than or equal to the median pore diameter of intermediate insulation sheet 13.Also can be: the mesopore inwall of the external diameter of described seal ring 10 and intermediate insulation sheet 13 offsets.
As shown in Figure 1, described bolt group is 2-8 group.Preferably: described bolt group is 4 groups, do so less that profile can do, volume is less.
As shown in Fig. 1,6,7, described left insulating trip 5, right insulating trip 14 are identical with intermediate insulation sheet 13 structures.Epoxy resin manufacture can be adopted, also the insulating material manufactures such as nylon, rubber can be adopted.
As shown in Fig. 1,4,5, on described left fittings body 1, away from the first collar flange 1-1 portion, there is the first outside thread 1-3 and the first hexagon head 1-4, on described right connector body 8, away from the second collar flange 8-1 portion, there is the second outside thread 8-3 and the second hexagon head 8-4.
Claims (9)
1. a hydraulic pressure insulating joint, comprise left fittings body (1), right connector body (8), intermediate insulation sheet (13) and seal ring (10), the connecting part of described left fittings body (1) has the first collar flange (1-1) radially, the connecting part of described right connector body (8) has the second collar flange (8-1) radially, described intermediate insulation sheet (13) is arranged between left fittings body (1) and right connector body (8), the counterface of the counterface of left fittings body (1) and right connector body (8) is pressed on respectively on two sides of intermediate insulation sheet (13), the inner chamber of described left fittings body (1) and right connector body (8) is communicated with by the mesopore of intermediate insulation sheet (13), it is characterized in that:
A, also comprise left pressing plate (4), right pressing plate (6), left insulating trip (5), right insulating trip (14), left dead ring (12), right dead ring (9), left screw insulating bush (11), right screw insulating bush (15), and the bolt group of screw (2) and nut (7) composition
B, described left pressing plate (4) have the first endoporus (4-1) and several the first screw holes (4-2), first endoporus (4-1) of described left pressing plate (4) is nested with on left fittings body (1) by left dead ring (12), one side of described left pressing plate (4) is pressed on first collar flange (1-1) of left fittings body (1) by left insulating trip (5)
C, described right pressing plate (6) have the second endoporus (6-1) and several the second screw holes (6-2), second endoporus (6-1) of described right pressing plate (6) is nested with on right connector body (8) by right dead ring (9), one side of described right pressing plate (6) is pressed on second collar flange (8-1) of right connector body (8) by right insulating trip (14)
On first collar flange (1-1) of d, described left fittings body (1), have several the first mounting holes (1-2), described left screw insulating bush (11) is contained in the first mounting hole (1-2),
On second collar flange (8-1) of e, described right connector body (8), have several the second mounting holes (8-2), described right screw insulating bush (15) is contained in the second mounting hole (8-2),
On f, described left insulating trip (5), there is several the first attachment holes (5-1),
On g, described right insulating trip (14), there is several the second attachment holes (14-1),
H, described intermediate insulation sheet (13) have several the 3rd attachment holes (13-1),
First screw hole (4-2) of left pressing plate (4) is passed, second screw hole (6-2) of the endoporus of first attachment hole (5-1) of left insulating trip (5), left screw insulating bush (11), the 3rd attachment hole (13-1) of intermediate insulation sheet (13), the endoporus of right screw insulating bush (15), second attachment hole (14-1) of right insulating trip (14), right pressing plate (6) in one end of i, described screw (2), and by nut (7), left fittings body (1) and right connector body (8) are fixed together
The counterface of the counterface of j, described left fittings body (1) and right connector body (8) is pressed on respectively the both sides of seal ring (10).
2. according to the hydraulic pressure insulating joint described in claim l, it is characterized in that: the side of exerting pressure of exert pressure side and the nut (7) of described screw (2) head is all lined with spring washer (3).
3. hydraulic pressure insulating joint according to claim 1, is characterized in that: described seal ring (10) is O RunddichtringO.
4. according to the hydraulic pressure insulating joint described in claim l, it is characterized in that: the external diameter of described seal ring (10) is less than or equal to the median pore diameter of intermediate insulation sheet (13).
5. hydraulic pressure insulating joint according to claim 4, is characterized in that: the mesopore inwall of the external diameter of described seal ring (10) and intermediate insulation sheet (13) offsets.
6. according to the hydraulic pressure insulating joint described in claim l, it is characterized in that: described bolt group is 2-8 group.
7. according to the hydraulic pressure insulating joint described in claim l, it is characterized in that: described bolt group is 4 groups.
8. according to the hydraulic pressure insulating joint described in claim l, it is characterized in that: described left insulating trip (5), right insulating trip (14) are identical with intermediate insulation sheet (13) structure.
9. according to the hydraulic pressure insulating joint described in claim l, it is characterized in that: described left fittings body (1) is upper has the first outside thread (1-3) and the first hexagon head (1-4) away from the first collar flange (1-1) portion away from the second collar flange (8-1) portion, thering is the second outside thread (8-3) and the second hexagon head (8-4) on described right connector body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303928.7A CN104075054A (en) | 2014-06-30 | 2014-06-30 | Hydraulic insulating joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303928.7A CN104075054A (en) | 2014-06-30 | 2014-06-30 | Hydraulic insulating joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104075054A true CN104075054A (en) | 2014-10-01 |
Family
ID=51596531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410303928.7A Pending CN104075054A (en) | 2014-06-30 | 2014-06-30 | Hydraulic insulating joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104075054A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795235A (en) * | 2019-04-02 | 2020-10-20 | 克罗姆普顿科技集团有限公司 | Electrical isolator |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB838464A (en) * | 1957-11-16 | 1960-06-22 | Vauxhall Motors Ltd | Improved coupling and joint for pipes and tubes |
| DE2817666A1 (en) * | 1978-04-19 | 1979-10-31 | Hahn Meitner Kernforsch | Electrically insulated high pressure pipe joint - uses synthetic resin flanged sleeves for fixing bolts securing pipe flanges |
| HU209350B (en) * | 1990-05-22 | 1994-04-28 | Huray | Insulating construction for connecting metallic pipelines |
| JP2000329273A (en) * | 1999-05-18 | 2000-11-30 | Kubota Corp | Insulating structure for pipe coupling |
| US20050120732A1 (en) * | 2002-03-18 | 2005-06-09 | Daikin Industries, Ltd. | Connection structure of coolant pipe of air conditioner |
| CN200965119Y (en) * | 2006-10-25 | 2007-10-24 | 宝山钢铁股份有限公司 | Shockproof insulated sealed gasket |
| CN202338711U (en) * | 2011-10-15 | 2012-07-18 | 常州市瑞泰工程机械有限公司 | Insulated oil pipe joint |
| CN202901620U (en) * | 2012-09-18 | 2013-04-24 | 常州市瑞泰工程机械有限公司 | Insulated hard tube |
| FR2987882A1 (en) * | 2012-03-07 | 2013-09-13 | Airbus Operations Sas | Connection device for connecting fluid pipes of e.g. landing gear system, of aircraft, has bolts connecting support parts so as to apply efforts on parts to stress parts and to surround electric insulation element between flanges |
| CN203963324U (en) * | 2014-06-30 | 2014-11-26 | 常州市瑞泰工程机械有限公司 | A kind of hydraulic pressure insulating joint |
-
2014
- 2014-06-30 CN CN201410303928.7A patent/CN104075054A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB838464A (en) * | 1957-11-16 | 1960-06-22 | Vauxhall Motors Ltd | Improved coupling and joint for pipes and tubes |
| DE2817666A1 (en) * | 1978-04-19 | 1979-10-31 | Hahn Meitner Kernforsch | Electrically insulated high pressure pipe joint - uses synthetic resin flanged sleeves for fixing bolts securing pipe flanges |
| HU209350B (en) * | 1990-05-22 | 1994-04-28 | Huray | Insulating construction for connecting metallic pipelines |
| JP2000329273A (en) * | 1999-05-18 | 2000-11-30 | Kubota Corp | Insulating structure for pipe coupling |
| US20050120732A1 (en) * | 2002-03-18 | 2005-06-09 | Daikin Industries, Ltd. | Connection structure of coolant pipe of air conditioner |
| CN200965119Y (en) * | 2006-10-25 | 2007-10-24 | 宝山钢铁股份有限公司 | Shockproof insulated sealed gasket |
| CN202338711U (en) * | 2011-10-15 | 2012-07-18 | 常州市瑞泰工程机械有限公司 | Insulated oil pipe joint |
| FR2987882A1 (en) * | 2012-03-07 | 2013-09-13 | Airbus Operations Sas | Connection device for connecting fluid pipes of e.g. landing gear system, of aircraft, has bolts connecting support parts so as to apply efforts on parts to stress parts and to surround electric insulation element between flanges |
| CN202901620U (en) * | 2012-09-18 | 2013-04-24 | 常州市瑞泰工程机械有限公司 | Insulated hard tube |
| CN203963324U (en) * | 2014-06-30 | 2014-11-26 | 常州市瑞泰工程机械有限公司 | A kind of hydraulic pressure insulating joint |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795235A (en) * | 2019-04-02 | 2020-10-20 | 克罗姆普顿科技集团有限公司 | Electrical isolator |
| CN111795235B (en) * | 2019-04-02 | 2023-05-09 | 克罗姆普顿科技集团有限公司 | Electrical isolator |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 99, No. Applicant after: Changzhou Ruitai Engineering Machinery Co., Ltd. Applicant after: CRRC QISHUYAN INSTITUTE CO., LTD. Address before: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 99, No. Applicant before: Changzhou Ruitai Engineering Machinery Co., Ltd. Applicant before: Nanche Qisuyan Engine and Vehicle Technics Institute Co., Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141001 |
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| RJ01 | Rejection of invention patent application after publication |