CN104214337B - Container positive/negative-pressure locking device - Google Patents
Container positive/negative-pressure locking device Download PDFInfo
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- CN104214337B CN104214337B CN201410285660.9A CN201410285660A CN104214337B CN 104214337 B CN104214337 B CN 104214337B CN 201410285660 A CN201410285660 A CN 201410285660A CN 104214337 B CN104214337 B CN 104214337B
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Abstract
The present invention relates to locking device technical field, disclose a kind of container positive/negative-pressure locking device, fixing seat is provided with negative pressure retaining mechanism and positive lock mechanism, negative pressure retaining mechanism includes installing the first cylinder, and the axle head that fixing seat is positioned at the first cylinder is provided with U-shaped connection seat, and U-shaped connects the both sides of seat and is provided with J-shaped pilot hole, U-shaped is provided with jaw in connecting seat, the axle head of jaw and the first cylinder is fixing to be connected, and the both sides of jaw are provided with guide finger, and the two ends of guide finger are respectively protruding in J-shaped pilot hole；Positive lock mechanism includes the air cylinder support being arranged on fixing seat, and air cylinder support is provided with the second cylinder, and the axle head of the second cylinder is provided with fixture block, and the outer end of fixture block is provided with card interface, and the open end width of card interface is more than bottom width.Therefore, the present invention has locking, opens conveniently, and locking is stable, use safer beneficial effect.
Description
Technical field
The present invention relates to locking device technical field, particularly relate to a kind of container positive/negative-pressure locking device.
Background technology
The most a lot of experiments need to carry out under vacuum conditions, some experiment needs to use the Dewar vessel of big volume, Dewar vessel generally comprises easy body and lid, Flange joint is passed through between container and lid, vessel flange, locked by locking device between lid flange, then evacuation, in negative pressure state inside container after evacuation, before now retaining mechanism is mainly evacuation, the evacuation initial stage is to one coupling mechanism force of lid flange, after container vacuum-pumping in test, such as certain substance combustion, now container internal pressure is transferred to malleation by negative pressure, for tun, the pressure of malleation is up to tens0000 Ns, retaining mechanism is it is necessary to have enough coupling mechanism force；The most common retaining mechanism generally cylinder locking, hydraulic locking or bolt are fixed, and during cylinder locking, coupling mechanism force is little, and hydraulic structure is complicated, and fluid easily leaks, and during bolt locking, dismantle, install inconvenience, and operator are dangerous.
Chinese patent Authorization Notice No.: CN200999118Y, authorized announcement date on January 2nd, 2008, disclose a kind of container locking apparatus, including vessel and container cover, long trough lockhole is had in vessel edge, through hole is offered in container cover, also have one and be placed in parallel and can extend into the disc locking plate of lockhole with lockhole, the edge of disc locking plate has at least one tangential breach, the middle part of disc locking plate is fixing connects an axle, axle through described container cover through hole and exceeds container cover plane from container internal direction, and axle is pivotally connected with described through hole.Its weak point is, uses locking plate locking, need a lot of locking plate for tun in this kind of container lock locking structure, the installation of locking plate, dismantles very inconvenient, and in operating process, operator are dangerous.
Summary of the invention
The present invention is to solve of the prior art above-mentioned, it is provided that one is locked, opened conveniently, the container positive/negative-pressure locking device that locking is stable, use is safer.
To achieve these goals, the present invention adopts the following technical scheme that
A kind of container positive/negative-pressure locking device, including the fixing seat being fixed on container side wall, fixing seat is provided with negative pressure retaining mechanism and positive lock mechanism, described negative pressure retaining mechanism includes the first cylinder being arranged on fixing seat, the axle head being positioned at the first cylinder on fixing seat is provided with U-shaped connection seat, U-shaped connects the both sides of seat and is provided with J-shaped pilot hole, U-shaped is provided with jaw in connecting seat, the axle head of jaw and the first cylinder is fixing to be connected, the both sides of described jaw are provided with guide finger, and the two ends of guide finger are respectively protruding in J-shaped pilot hole；Described positive lock mechanism includes the air cylinder support being arranged on fixing seat, described air cylinder support is provided with the second cylinder, the axle of the second cylinder is vertical with container side wall, the axle head of the second cylinder is provided with fixture block, the outer end of described fixture block is provided with card interface, and the open end width of described card interface is more than bottom width.
Some this kind of positive/negative-pressure locking devices of installation are divided equally by the surrounding being positioned at flange on container, the original state of the first cylinder is that cylinder axis stretches out state, the original state of the second cylinder is cylinder axis retraction state, after lid is connected with container, lid flange aligns with easy flange, now control the first cylinder axis retraction, first cylinder drives jaw to move along J-shaped pilot hole, while movement, jaw inwardly rotates, final jaw is fastened on lid flange realization clamping, location, then control the second cylinder axis to stretch out, card interface on fixture block is stuck in vessel flange, on lid flange, when negative pressure in container, jaw, fixture block plays position-limiting action, prevent lid flange, vessel flange misplaces, it is also prevented from outside air to enter in container simultaneously；When malleation in container, now pressure is the biggest, this pressure is to act on fixture block, rather than act on cylinder, thus without cause lid because cylinder pressure is the least be easily connected unreliable, after test, control the first cylinder, the second cylinder action, realizing lid to separate with container, therefore this kind of locking device is locked, is opened conveniently, uses safe and stable.
As preferably, described guide finger is provided with hole, location with the contact surface of J-shaped pilot hole, and the sidewall of described J-shaped pilot hole is provided with spring catch, and after the first cylinder axis shrinks, jaw locking lid flange, spring catch inserts in hole, location.Guide finger is played positioning action by spring catch.
As preferably, the head end of described claw is sphere.Due to after the moving along J-shaped gathering sill of jaw, last with lid flange contact time be not necessarily plane contact, the sphere-contact each jaw of guarantee stably can contact with lid flange.
As preferably, the head of the second described cylinder is fixed with U-shaped guide holder, the axle of the second cylinder is connected through U-shaped guide holder and fixture block are fixing, fixture block is located in U-shaped guide holder, the inner side of U-shaped guide holder is provided with the gathering sill axially in parallel with the second cylinder, and the both sides of described fixture block are provided with the projection coordinated with gathering sill.In container during malleation, fixture block can be placed fixture block stress post deflection by the biggest active force, U-shaped guide holder.
As preferably, the two sides of described card interface are inclined-plane and symmetrical about the second cylinder axis, the side of described card interface is α with the angle of the second cylinder-bore axis, and vessel flange, lid flange are to meet following relation between μ, α and μ with the coefficient of friction of card interface side: μ >=tan α.α is angle of friction, utilize inclined-plane self-lock mechanism, as μ >=tan α, no matter in container, positive pressure pressure is much, as long as fixture block self-strength is sufficiently large, then fixture block all the time with vessel flange, lid flange clamping, even the unexpected power-off in outside, the thrust of the second cylinder disappears, and fixture block still can clamping vessel flange, lid flange.
Therefore, the present invention has locking, opens conveniently, and locking is stable, use safer beneficial effect.Meanwhile, the present invention also has in the case of unexpected power-off also can lock vessel flange, lid flange, thus safing beneficial effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of negative pressure retaining mechanism in the present invention.
Fig. 2 is positive lock mechanism opening view in the present invention.
Fig. 3 is positive lock mechanism locking state schematic diagram in the present invention.
Fig. 4 is U-shaped guide holder and the plan structure schematic diagram of fixture block in Fig. 3.
In figure: fixing seat 1 negative pressure retaining mechanism 2 positive lock mechanism 3 first cylinder 4 U-shaped connects seat 5 J-shaped pilot hole 6 jaw 7 guide finger 8 air cylinder support 9 second cylinder 10 fixture block 11 card interface 12 spring catch 13 sphere 14 U-shaped guide holder 15 gathering sill 16 projection 17 vessel flange 18 lid flange 19 container 20 lid 21.
Detailed description of the invention
The invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings:
A kind of container positive/negative-pressure locking device as depicted in figs. 1 and 2, including the fixing seat 1 being fixed on container side wall, fixing seat is provided with negative pressure retaining mechanism 2 and positive lock mechanism 3, negative pressure retaining mechanism 2 includes the first cylinder 4 being arranged on fixing seat, the axle head being positioned at the first cylinder on fixing seat is provided with U-shaped connection seat 5, U-shaped connects the both sides of seat and is provided with J-shaped pilot hole 6, U-shaped is provided with jaw 7 in connecting seat, the axle head of jaw and the first cylinder is fixing to be connected, the both sides of jaw are provided with guide finger 8, the two ends of guide finger are respectively protruding in J-shaped pilot hole, the head end of claw is sphere 14, guide finger 8 is provided with hole, location with the contact surface of J-shaped pilot hole, the sidewall of J-shaped pilot hole is provided with spring catch 13, after the first cylinder axis shrinks, jaw locking lid flange, spring catch inserts in hole, location.
nullAs shown in Figures 2 and 3，Positive lock mechanism 3 includes the air cylinder support 9 being arranged on fixing seat，Air cylinder support is provided with the second cylinder 10，The axle of the second cylinder is vertical with container side wall，The axle head of the second cylinder is provided with fixture block 11，The outer end of fixture block is provided with card interface 12，The open end width of card interface is more than bottom width，The two sides of card interface 12 are inclined-plane and symmetrical about the second cylinder axis，The side of card interface is α with the angle of the second cylinder-bore axis，Vessel flange 18、Lid flange 19 is μ with the coefficient of friction of card interface side，Following relation is met: μ >=tan α between α and μ，α is angle of friction，Utilize inclined-plane self-lock mechanism，As μ >=tan α，No matter in container, positive pressure pressure is much，As long as fixture block self-strength is sufficiently large，So fixture block all the time with vessel flange、Lid flange clamping，Even the unexpected power-off in outside，The thrust of the second cylinder disappears，Fixture block still can clamping vessel flange、Lid flange，Use safer；As shown in Figure 4, the head of the second cylinder 10 is fixed with U-shaped guide holder 15, the axle of the second cylinder is connected through U-shaped guide holder and fixture block are fixing, fixture block is located in U-shaped guide holder, the inner side of U-shaped guide holder is provided with the gathering sill 16 axially in parallel with the second cylinder, and the both sides of fixture block are provided with the projection 17 coordinated with gathering sill, and fixture block plays in U-shaped guide holder spacing, supported on both sides effect, when preventing card interface in fixture block subjected to large compressive, deflect between fixture block and the second cylinder axis and depart from.
nullIn conjunction with accompanying drawing，The using method of the present invention is as follows: lid 21 is connected with the opening of container 20，Container open end is provided with vessel flange 18，Lid is provided with lid flange 19 with the face that coordinates of container，It is positioned on container around the downside of vessel flange and is evenly distributed with 8 container positive/negative-pressure locking devices，That is there are 8 positive lock mechanisms and 8 negative pressure retaining mechanisms，The original state of the first cylinder is that cylinder axis stretches out state、The original state of the second cylinder is cylinder axis retraction state，After lid is connected with container，Lid flange aligns with easy flange，Now control the first cylinder axis retraction，First cylinder drives jaw to move along J-shaped pilot hole，While movement, jaw inwardly rotates，Final jaw is fastened on lid flange realization clamping、Location，Then control the second cylinder axis to stretch out，Card interface on fixture block is stuck in vessel flange、On lid flange，When negative pressure in container，Jaw、Fixture block plays position-limiting action，Prevent lid flange、Vessel flange misplaces，It is also prevented from outside air to enter in container simultaneously；When malleation in container, now pressure is the biggest, this pressure is to act on fixture block, rather than act on cylinder, thus without cause lid because cylinder pressure is the least be easily connected unreliable, owing to meeting following relation between α and μ: μ >=tan α, therefore card interface and vessel flange, self-locking is there is between lid flange, even if extraneous power-off suddenly, the thrust of the second cylinder disappears, due to self-locking, therefore fixture block clamps vessel flange all the time, lid flange, use the safest, after test, control the first cylinder, second cylinder action, realize lid to separate with container.Therefore, the present invention has locking, opens conveniently, and locking is stable, use safer beneficial effect.Meanwhile, the present invention also has in the case of unexpected power-off also can lock vessel flange, lid flange, thus safing beneficial effect.
Claims (5)
1. a container positive/negative-pressure locking device, it is characterized in that, including the fixing seat (1) being fixed on container side wall, fixing seat is provided with negative pressure retaining mechanism (2) and positive lock mechanism (3), described negative pressure retaining mechanism (2) includes the first cylinder (4) being arranged on fixing seat, the axle head being positioned at the first cylinder on fixing seat is provided with U-shaped connection seat (5), U-shaped connects the both sides of seat and is provided with J-shaped pilot hole (6), U-shaped is provided with jaw (7) in connecting seat, the axle head of jaw and the first cylinder is fixing to be connected, the both sides of described jaw are provided with guide finger (8), the two ends of guide finger are respectively protruding in J-shaped pilot hole；Described positive lock mechanism (3) includes the air cylinder support (9) being arranged on fixing seat, described air cylinder support is provided with the second cylinder (10), the axle of the second cylinder is vertical with container side wall, the axle head of the second cylinder is provided with fixture block (11), the outer end of described fixture block is provided with card interface (12), the open end width of described card interface is more than bottom width, and the two sides of described card interface (12) are inclined-plane and symmetrical about the second cylinder axis.
Container positive/negative-pressure locking device the most according to claim 1, it is characterized in that, described guide finger (8) is provided with hole, location with the contact surface of J-shaped pilot hole, the sidewall of described J-shaped pilot hole is provided with spring catch (13), after the first cylinder axis shrinks, jaw locking lid flange, spring catch inserts in hole, location.
Container positive/negative-pressure locking device the most according to claim 1 and 2, is characterized in that, the head end of described claw is sphere (14).
Container positive/negative-pressure locking device the most according to claim 1, it is characterized in that, the head of described the second cylinder (10) is fixed with U-shaped guide holder (15), the axle of the second cylinder is connected through U-shaped guide holder and fixture block are fixing, fixture block is located in U-shaped guide holder, the inner side of U-shaped guide holder is provided with the gathering sill (16) axially in parallel with the second cylinder, and the both sides of described fixture block are provided with the projection (17) coordinated with gathering sill.
5. according to the container positive/negative-pressure locking device described in claim 1 or 4, it is characterized in that, the side of described card interface is α with the angle of the second cylinder-bore axis, vessel flange (18), lid flange (19) are to meet following relation between μ, α and μ with the coefficient of friction of card interface side: μ >=tan α.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410285660.9A CN104214337B (en) | 2014-06-25 | 2014-06-25 | Container positive/negative-pressure locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410285660.9A CN104214337B (en) | 2014-06-25 | 2014-06-25 | Container positive/negative-pressure locking device |
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| Publication Number | Publication Date |
|---|---|
| CN104214337A CN104214337A (en) | 2014-12-17 |
| CN104214337B true CN104214337B (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410285660.9A Expired - Fee Related CN104214337B (en) | 2014-06-25 | 2014-06-25 | Container positive/negative-pressure locking device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107899949A (en) * | 2017-10-31 | 2018-04-13 | 常州新马干燥工程有限公司 | Pneumatic frequency particle airflow shifting machine |
| CN113418797A (en) * | 2021-08-23 | 2021-09-21 | 中材科技(成都)有限公司 | Automatic safety device of hydrostatic test water jacket for hydrostatic test of high-pressure gas cylinder |
| CN114392779B (en) * | 2021-12-14 | 2023-02-28 | 常熟市虞华真空设备科技有限公司 | Positive and negative pressure experiment tank with quick locking mechanism |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2543731A1 (en) * | 1975-10-01 | 1977-04-14 | Ernst Huebers | Rapid action clamp for pressure vessel end covers - has clamping load exerted by number of hydraulic cylinders operating on peripheral flange |
| CN2407915Y (en) * | 2000-02-12 | 2000-11-29 | 陈建文 | Safety flat open type vulcanizing pot |
| CN200999118Y (en) * | 2007-01-10 | 2008-01-02 | 雷正宜 | Container locking apparatus |
| CN101956825A (en) * | 2010-10-20 | 2011-01-26 | 温州职业技术学院 | Fast-open door safety-locking device of pressure container |
| CN102102759A (en) * | 2011-03-10 | 2011-06-22 | 温州市东瓯微孔过滤有限公司 | Fast-open door device of pressure container with safety interlocking |
| CN102322521A (en) * | 2011-10-13 | 2012-01-18 | 楚天科技股份有限公司 | Locking device capable of quickly opening door of pressure container |
| CN204041986U (en) * | 2014-06-25 | 2014-12-24 | 杭州杭氧环保成套设备有限公司 | Stable type container locking apparatus |
-
2014
- 2014-06-25 CN CN201410285660.9A patent/CN104214337B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2543731A1 (en) * | 1975-10-01 | 1977-04-14 | Ernst Huebers | Rapid action clamp for pressure vessel end covers - has clamping load exerted by number of hydraulic cylinders operating on peripheral flange |
| CN2407915Y (en) * | 2000-02-12 | 2000-11-29 | 陈建文 | Safety flat open type vulcanizing pot |
| CN200999118Y (en) * | 2007-01-10 | 2008-01-02 | 雷正宜 | Container locking apparatus |
| CN101956825A (en) * | 2010-10-20 | 2011-01-26 | 温州职业技术学院 | Fast-open door safety-locking device of pressure container |
| CN102102759A (en) * | 2011-03-10 | 2011-06-22 | 温州市东瓯微孔过滤有限公司 | Fast-open door device of pressure container with safety interlocking |
| CN102322521A (en) * | 2011-10-13 | 2012-01-18 | 楚天科技股份有限公司 | Locking device capable of quickly opening door of pressure container |
| CN204041986U (en) * | 2014-06-25 | 2014-12-24 | 杭州杭氧环保成套设备有限公司 | Stable type container locking apparatus |
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| CN104214337A (en) | 2014-12-17 |
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