CN109210372A - A kind of fixed bracket of acetylene gas bottle storage - Google Patents

A kind of fixed bracket of acetylene gas bottle storage Download PDF

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Publication number
CN109210372A
CN109210372A CN201811387564.XA CN201811387564A CN109210372A CN 109210372 A CN109210372 A CN 109210372A CN 201811387564 A CN201811387564 A CN 201811387564A CN 109210372 A CN109210372 A CN 109210372A
Authority
CN
China
Prior art keywords
fixedly connected
positioning
box body
box
acetylene gas
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.)
Withdrawn
Application number
CN201811387564.XA
Other languages
Chinese (zh)
Inventor
罗淇元
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.)
LEIYANG QIYUAN GAS Co Ltd
Original Assignee
LEIYANG QIYUAN GAS 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 LEIYANG QIYUAN GAS Co Ltd filed Critical LEIYANG QIYUAN GAS Co Ltd
Priority to CN201811387564.XA priority Critical patent/CN109210372A/en
Publication of CN109210372A publication Critical patent/CN109210372A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00Details of vessels or of the filling or discharging of vessels
    • F17C13/08Mounting arrangements for vessels
    • F17C13/084Mounting arrangements for vessels for small-sized storage vessels, e.g. compressed gas cylinders or bottles, disposable gas vessels, vessels adapted for automotive use
    • F17C13/085Mounting arrangements for vessels for small-sized storage vessels, e.g. compressed gas cylinders or bottles, disposable gas vessels, vessels adapted for automotive use on wheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01Shape
    • F17C2201/0104Shape cylindrical
    • F17C2201/0109Shape cylindrical with exteriorly curved end-piece
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03Orientation
    • F17C2201/032Orientation with substantially vertical main axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01Mounting arrangements
    • F17C2205/0103Exterior arrangements
    • F17C2205/0107Frames
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01Mounting arrangements
    • F17C2205/0153Details of mounting arrangements
    • F17C2205/0157Details of mounting arrangements for transport
    • F17C2205/0161Details of mounting arrangements for transport with wheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01Mounting arrangements
    • F17C2205/0153Details of mounting arrangements
    • F17C2205/0173Details of mounting arrangements lockable
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/01Pure fluids
    • F17C2221/018Acetylene

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

The invention discloses a kind of acetylene gas bottles to store with fixed bracket, including bottle body, the bottom on the bottle body surface is arranged with support device, locking device is fixedly connected at the top of the support device, the support device includes box body, the first groove is offered at the top of box body, the bottom of the first groove inner cavity is flexibly connected with bottle body, and there are two the first limited blocks for the inner cavity flexible connection of box body.The present invention is used cooperatively by setting bottle body, support device, locking device, box body, the first groove, the first limited block, magnet, gag lever post, positioning box, sliding block, pull rod, spring, carrying handle, motion bar, the second groove, locating piece, locating rod, first support bar, first connecting rod, second support bar, the second connecting rod, the first positioning shell, the second positioning shell, limiting slot, the second limited block, the second pivot pin, pulley and bracket, while solving the problems, such as that existing acetylene gas bottle storage is poor with fixed bracket fixed effect.

Description

A kind of fixed bracket of acetylene gas bottle storage
Technical field
The present invention relates to acetylene gas bottle technical field, the fixed brackets of specially a kind of acetylene gas bottle storage.
Background technique
Acetylene gas bottle refers to the special pressure vessel equipped with filler of storage and transportation acetylene, and shape is close with oxygen cylinder, and surface applies With white, acetylene gas bottle is provided with the porous aggregate for immersing acetone, and acetylene is enable to be securely stored in bottle, in use, dissolution Acetylene in acetone becomes gas and separates, and acetone remains in bottle, uses to be filled with acetylene again, to acetylene Gas cylinder carry out using when need that acetylene gas bottle is fixed, but existing acetylene gas bottle with fixed bracket to acetylene gas The fixed effect of bottle is poor, due to the artificial or extraneous interference because of to acetylene gas bottle, is very easy to cause toppling over for acetylene gas bottle, So as to cause the fracture of junction at the top of acetylene gas bottle, very big security risk is caused to user.
Summary of the invention
The purpose of the present invention is to provide a kind of acetylene gas bottles to store with bracket is fixed, and has the advantages of good fixing effect, Solve the problems, such as that existing acetylene gas bottle storage is poor with fixed bracket fixed effect.
To achieve the above object, the invention provides the following technical scheme: a kind of storage of acetylene gas bottle, which is used, fixes bracket, including Bottle body, the bottom on the bottle body surface are arranged with support device, are fixedly connected with locking device at the top of the support device.
Preferably, the support device includes box body, and the first groove, first groove are offered at the top of the box body The bottom of inner cavity is flexibly connected with bottle body, and there are two the first limited block, first limits for the inner cavity flexible connection of the box body The side of block is fixedly connected with magnet, and first limited block is fixedly connected with gag lever post, the limit far from the side of magnet Bar is through to the outside of box body far from the side of the first limited block and is fixedly connected with positioning box, the side of the positioning box and box Body is flexibly connected, and the inner cavity of the positioning box is connected with sliding block, pull rod, the drawing are fixedly connected at the top of the sliding block The surface of bar is arranged with spring, and the outside of positioning box is through at the top of the pull rod and is fixedly connected with carrying handle, the sliding block Bottom be fixedly connected with motion bar, the bottom of the motion bar is through to the outside of positioning box.
Preferably, the side at the top of the positioning box offers the second groove, and the side of the carrying handle bottom is fixedly connected There is locating piece, the bottom of the locating piece is connected with locating rod, the side of remotely located piece of the locating rod and positioning box Contact.
Preferably, the two sides of the box body bottom are fixedly connected to bracket, and the bottom of the bracket passes through pivot pin activity It is connected with pulley.
Preferably, the locking device includes two first support bars, is consolidated between the opposite side of two first support bars Surely it is connected with the first positioning shell, first connecting rod is fixedly connected on rear side of the first support bar, the first connecting rod Rear side is fixedly connected with second support bar, and the bottom of the second support bar is fixedly connected with support device, two second supports The second connecting rod, the front side of second connecting rod and the first fixed company of positioning shell are fixedly connected between the opposite side of bar It connects, the front side of the first positioning shell is connected with the second positioning shell by the first pivot pin, and described first positions on front side of shell Left side offers limiting slot, and the left side on rear side of the second positioning shell is fixedly connected with the second limited block, second limited block Rear side extend to the inner cavity of limiting slot, the left side at the top of the first positioning shell is connected with the second pivot pin, described second The bottom of pivot pin sequentially passes through the bottom of limiting slot and the second limited block and extends to the inner cavity of the first positioning shell.
Compared with prior art, beneficial effects of the present invention are as follows:
1, the present invention passes through setting bottle body, support device, locking device, box body, the first groove, the first limited block, magnet, limit Bar, positioning box, sliding block, pull rod, spring, carrying handle, motion bar, the second groove, locating piece, locating rod, first support bar, first connect Extension bar, second support bar, the second connecting rod, first positioning shell, second positioning shell, limiting slot, the second limited block, the second pivot pin, Pulley and bracket are used cooperatively, while solving the problems, such as that existing acetylene gas bottle storage is poor with fixed bracket fixed effect.
2, the present invention is used cooperatively by setting bracket and pulley, the person's of being convenient to use moving fixing support, by setting Magnet is set, the position-limiting action to two the first limited blocks is played, by the way that first connecting rod is arranged, is played to first support bar The fixed function to two second support bars is played, together by the way that the second connecting rod is arranged with the fixed function of second support bar When play to first positioning shell fixed function, by be arranged two first support bars, play to first positioning shell consolidate It is set for using.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention;
Fig. 2 is the front sectional view of partial structurtes of the present invention;
Fig. 3 is the partial enlarged view in Fig. 2 of the present invention at A;
Fig. 4 is the top view of partial structurtes of the present invention;
Fig. 5 is the left view cross-sectional view of partial structurtes of the present invention.
In figure: 1 bottle body, 2 support devices, 3 locking devices, 4 box bodys, 5 first grooves, 6 first limited blocks, 7 magnet, 8 limits Position bar, 9 positioning boxes, 10 sliding blocks, 11 pull rods, 12 springs, 13 carrying handles, 14 motion bars, 15 second grooves, 16 locating pieces, 17 positioning Bar, 18 first support bars, 19 first connecting rods, 20 second support bars, 21 second connecting rods, 22 first positioning shells, 23 second are determined Position shell, 24 limiting slots, 25 second limited blocks, 26 second pivot pins, 27 pulleys, 28 brackets.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Fig. 1-5, a kind of fixed bracket of acetylene gas bottle storage use, including bottle body 1, the bottom on 1 surface of bottle body is please referred to be arranged There is support device 2, the top of support device 2 is fixedly connected with locking device 3, and support device 2 includes box body 4, the top of box body 4 The first groove 5 is offered, the bottom of 5 inner cavity of the first groove is flexibly connected with bottle body 1, and there are two the inner cavity flexible connections of box body 4 First limited block 6, the side of the first limited block 6 are fixedly connected with magnet 7, and side of first limited block 6 far from magnet 7 is fixed to be connected It is connected to gag lever post 8, gag lever post 8 is through to the outside of box body 4 far from the side of the first limited block 6 and is fixedly connected with positioning box 9, The side of positioning box 9 is flexibly connected with box body 4, and the inner cavity of positioning box 9 is connected with sliding block 10, and the top of sliding block 10 is fixed to be connected It is connected to pull rod 11, the surface of pull rod 11 is arranged with spring 12, and the top of pull rod 11 is through to the outside of positioning box 9 and is fixedly connected There is carrying handle 13, the bottom of sliding block 10 is fixedly connected with motion bar 14, and the bottom of motion bar 14 is through to the outside of positioning box 9, fixed The side at 9 top of position box offers the second groove 15, and the side of 13 bottom of carrying handle is fixedly connected with locating piece 16, locating piece 16 Bottom is connected with locating rod 17, and the side that 17 remotely located pieces 16 of locating rod is contacted with positioning box 9, and the two of 4 bottom of box body Side is fixedly connected to bracket 28, and the bottom of bracket 28 is connected with pulley 27 by pivot pin, and locking device 3 includes two the One support rod 18, two first support bars 18 are fixedly connected with the first positioning shell 22, first support bar 18 between opposite side Rear side be fixedly connected with first connecting rod 19, the rear side of first connecting rod 19 is fixedly connected with second support bar 20, second The bottom of strut 20 is fixedly connected with support device 2, and two second support bars 20 are fixedly connected with second between opposite side Connecting rod 21, the front side of the second connecting rod 21 are fixedly connected with the first positioning shell 22, and the front side of the first positioning shell 22 passes through first Pivot pin is connected with the second positioning shell 23, and the left side of 22 front side of the first positioning shell offers limiting slot 24, the second positioning shell 23 It is fixedly connected with the second limited block 25 on the left of rear side, the rear side of the second limited block 25 extends to the inner cavity of limiting slot 24, and first The left side at 22 top of positioning shell is connected with the second pivot pin 26, and the bottom of the second pivot pin 26 sequentially passes through limiting slot 24 and second The bottom of limited block 25 and the inner cavity for extending to the first positioning shell 22 are used cooperatively by setting bracket 28 and pulley 27, side User's moving fixing support, by be arranged magnet 7, the position-limiting action to two the first limited blocks 6 is played, by setting First connecting rod 19 is set, the fixed function to first support bar 18 and second support bar 20 is played, passes through the second connection of setting Bar 21 plays the fixed function to two second support bars 20, while playing the fixed function to the first positioning shell 22, leads to Two first support bars 18 of setting are crossed, the fixed function to the first positioning shell 22 are played, by the way that bottle body 1, support device is arranged 2, locking device 3, box body 4, the first groove 5, the first limited block 6, magnet 7, gag lever post 8, positioning box 9, sliding block 10, pull rod 11, Spring 12, carrying handle 13, motion bar 14, the second groove 15, locating piece 16, locating rod 17, first support bar 18, first connecting rod 19, second support bar 20, the second connecting rod 21, first positioning shell 22, second position shell 23, limiting slot 24, the second limited block 25, Second pivot pin 26, pulley 27 and bracket 28 are used cooperatively, while to solve existing acetylene gas bottle storage solid with fixed bracket Determine the problem of effect difference.
In use, bottle body 1 is placed into first groove 5 at 4 top of box body by user, user positions second at this time Shell 23 is closed by the first pivot pin and the first positioning shell 22, and the second pivot pin 26 is placed into the first positioning shell by subsequent user 22 and second limited block 25 inner cavity in, to first positioning shell 22 and second positioning shell 23 lock, user is upward at this time Carrying handle 13 is pulled, carrying handle 13 is moved up with movable slider 10 by pull rod 11 and squeezes spring 12, and motion bar 14 rises at this time, then Locating rod 17 will downward vertically, and user unclamps carrying handle 13 at this time, and the bottom of locating rod 17 will enter the second groove 15, and then make Gag lever post 8 is pulled out the inside of box body 4 by positioning box 9 by user, and subsequent user pulls carrying handle 13 and again by locating rod 17 It is stirred to side, unclamps carrying handle 13 again, to keep box body 4 and the contact area on ground bigger, the fixed of bottle body 1 is imitated Fruit is more preferable.
In summary: the fixed bracket of acetylene gas bottle storage, by setting bottle body 1, support device 2, locking device 3, Box body 4, the first groove 5, the first limited block 6, magnet 7, gag lever post 8, positioning box 9, sliding block 10, pull rod 11, spring 12, carrying handle 13, motion bar 14, the second groove 15, locating piece 16, locating rod 17, first support bar 18, first connecting rod 19, second support bar 20, the second connecting rod 21, first positioning shell 22, second positions shell 23, limiting slot 24, the second limited block 25, the second pivot pin 26, slides Wheel 27 and bracket 28 are used cooperatively, while being solved existing acetylene gas bottle storage and being asked with fixed bracket fixed effect is poor Topic.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (5)

1. a kind of acetylene gas bottle storage fixed bracket, including bottle body (1), it is characterised in that: the bottom on bottle body (1) surface It is arranged with support device (2), is fixedly connected with locking device (3) at the top of the support device (2).
2. a kind of fixed bracket of acetylene gas bottle storage according to claim 1, it is characterised in that: the support device (2) include box body (4), offered the first groove (5) at the top of the box body (4), the bottom of the first groove (5) inner cavity with Bottle body (1) is flexibly connected, and there are two the first limited block (6), first limited blocks for the inner cavity flexible connection of the box body (4) (6) side is fixedly connected with magnet (7), and first limited block (6) is fixedly connected with gag lever post far from the side of magnet (7) (8), the gag lever post (8) is through to the outside of box body (4) and is fixedly connected with positioning box far from the side of the first limited block (6) (9), the side of the positioning box (9) is flexibly connected with box body (4), and the inner cavity of the positioning box (9) is connected with sliding block (10), it is fixedly connected with pull rod (11) at the top of the sliding block (10), the surface of the pull rod (11) is arranged with spring (12), institute It states the outside for being through to positioning box (9) at the top of pull rod (11) and is fixedly connected with carrying handle (13), the bottom of the sliding block (10) It is fixedly connected with motion bar (14), the bottom of the motion bar (14) is through to the outside of positioning box (9).
3. a kind of fixed bracket of acetylene gas bottle storage according to claim 2, it is characterised in that: the positioning box (9) The side at top offers the second groove (15), and the side of carrying handle (13) bottom is fixedly connected with locating piece (16), described The bottom of locating piece (16) is connected with locating rod (17), the side of remotely located piece of the locating rod (17) (16) and positioning Box (9) contact.
4. a kind of fixed bracket of acetylene gas bottle storage according to claim 2, it is characterised in that: box body (4) bottom The two sides in portion are fixedly connected to bracket (28), and the bottom of the bracket (28) is connected with pulley (27) by pivot pin.
5. a kind of fixed bracket of acetylene gas bottle storage according to claim 1, it is characterised in that: the locking device It (3) include two first support bars (18), two first support bars (18) are fixedly connected with the first positioning between opposite side Shell (22) is fixedly connected with first connecting rod (19) on rear side of the first support bar (18), the first connecting rod (19) Rear side is fixedly connected with second support bar (20), and the bottom of the second support bar (20) is fixedly connected with support device (2), and two A second support bar (20) is fixedly connected with the second connecting rod (21) between opposite side, before second connecting rod (21) Side is fixedly connected with the first positioning shell (22), and the front side of first positioning shell (22) is connected with second by the first pivot pin It positions shell (23), the left side on front side of first positioning shell (22) offers limiting slot (24), after second positioning shell (23) It is fixedly connected on the left of side the second limited block (25), extends to the interior of limiting slot (24) on rear side of second limited block (25) Chamber, the described first left side for positioning at the top of shell (22) are connected with the second pivot pin (26), the bottom of second pivot pin (26) It sequentially passes through the bottom of limiting slot (24) and the second limited block (25) and extends to the inner cavity of the first positioning shell (22).
CN201811387564.XA 2018-11-21 2018-11-21 A kind of fixed bracket of acetylene gas bottle storage Withdrawn CN109210372A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811387564.XA CN109210372A (en) 2018-11-21 2018-11-21 A kind of fixed bracket of acetylene gas bottle storage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811387564.XA CN109210372A (en) 2018-11-21 2018-11-21 A kind of fixed bracket of acetylene gas bottle storage

Publications (1)

Publication Number Publication Date
CN109210372A true CN109210372A (en) 2019-01-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811387564.XA Withdrawn CN109210372A (en) 2018-11-21 2018-11-21 A kind of fixed bracket of acetylene gas bottle storage

Country Status (1)

Country Link
CN (1) CN109210372A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111928107A (en) * 2020-08-08 2020-11-13 包头包钢盈达气体有限公司 Large capacity liquid argon stores and fills dress device safely
CN112483894A (en) * 2020-12-11 2021-03-12 宜春市富锐气体有限责任公司 Portable oxygen argon gas cylinder fixed bolster
CN112944211A (en) * 2021-03-23 2021-06-11 深圳市琳琳祥实业有限公司 Fire prevention gas cylinder protection device convenient to remove

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111928107A (en) * 2020-08-08 2020-11-13 包头包钢盈达气体有限公司 Large capacity liquid argon stores and fills dress device safely
CN111928107B (en) * 2020-08-08 2022-04-15 包头包钢盈达气体有限公司 Large capacity liquid argon stores and fills dress device safely
CN112483894A (en) * 2020-12-11 2021-03-12 宜春市富锐气体有限责任公司 Portable oxygen argon gas cylinder fixed bolster
CN112483894B (en) * 2020-12-11 2022-07-19 宜春市富锐气体有限责任公司 Portable oxygen argon gas cylinder fixed bolster
CN112944211A (en) * 2021-03-23 2021-06-11 深圳市琳琳祥实业有限公司 Fire prevention gas cylinder protection device convenient to remove

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Application publication date: 20190115

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