CN204552679U - A kind of new-type without side door bolt ram preventer - Google Patents

A kind of new-type without side door bolt ram preventer Download PDF

Info

Publication number
CN204552679U
CN204552679U CN201520238987.0U CN201520238987U CN204552679U CN 204552679 U CN204552679 U CN 204552679U CN 201520238987 U CN201520238987 U CN 201520238987U CN 204552679 U CN204552679 U CN 204552679U
Authority
CN
China
Prior art keywords
assembly
side door
bearing pin
hydraulic cylinder
rear end
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.)
Active
Application number
CN201520238987.0U
Other languages
Chinese (zh)
Inventor
陈兆阳
李福强
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.)
Jiangsu Xin Get Petroleum Machinery Ltd Co
Original Assignee
Jiangsu Xin Get Petroleum Machinery Ltd Co
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 Jiangsu Xin Get Petroleum Machinery Ltd Co filed Critical Jiangsu Xin Get Petroleum Machinery Ltd Co
Priority to CN201520238987.0U priority Critical patent/CN204552679U/en
Application granted granted Critical
Publication of CN204552679U publication Critical patent/CN204552679U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

The utility model discloses a kind of new-type without side door bolt ram preventer, comprise housing assembly, side door assembly, front end cover assembly, rear end cap assembly, flashboard assembly, piston portion assembly and bearing pin part assembly; Side door assembly is two, is arranged on the left and right sides of housing assembly respectively; Front end cover assembly and rear end cap assembly are two, are located at the two ends, left and right of the front and back sides of housing assembly respectively; Piston portion assembly is two, is arranged on two side door assemblies respectively inner; Side door assembly is stretched out in piston portion assembly one end, and extension and the flashboard assembly of piston portion assembly are linked into an integrated entity by the hook of piston, and flashboard assembly is located in the flashboard chamber in housing assembly; Bearing pin part assembly is four, is located between housing assembly and side door assembly.The utility model is rational in infrastructure, easy to operate, and volume is little, and hydraulic-driven side door is rotary subsequently opens or closes to adopt hydraulic-driven bearing pin to rotate, and reduces labor strength.

Description

A kind of new-type without side door bolt ram preventer
Technical field
The utility model relates to a kind of preventer, specifically a kind of new-type without side door bolt ram preventer.
Background technology
Preventer is for cutting out well head in the operation process such as formation testing, well workover, completion, preventing gas blowout accident from occurring, by the security seal wellhead assembly preventing blowout that the oil field that envelope and half envelope, two kinds of functions are integrated entirely is commonly used.Existing preventer is provided with a blind flange through hole in the front side of housing assembly or rear side, and seals with circular flange, thus realizes the function of open flow.Existing preventer volume is large, takes up room large.After existing preventer U-shaped flashboard chamber adopts artificial rotary pin shaft, run-in index opens the mode that side door takes out flashboard assembly, and working site requisite space is large, and side door is opened and longly easily to be caused danger.Existing preventer adopts and manually opens side door, and labor strength is large.
Utility model content
The purpose of this utility model is to provide a kind of new-type without side door bolt ram preventer, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of new-type without side door bolt ram preventer, comprise housing assembly, side door assembly, front end cover assembly, rear end cap assembly, flashboard assembly, piston portion assembly and bearing pin part assembly; Described side door assembly is two, is arranged on the left and right sides of housing assembly respectively; Described front end cover assembly and rear end cap assembly are two, are located at the two ends, left and right of the front and back sides of housing assembly respectively; Described piston portion assembly is two, is arranged on two side door assemblies respectively inner; Side door assembly is stretched out in described piston portion assembly one end, and extension and the flashboard assembly of piston portion assembly are linked into an integrated entity by the hook of piston, and described flashboard assembly is located in the flashboard chamber in housing assembly; Described bearing pin part assembly is four, is located between housing assembly and side door assembly.Described housing assembly vertical direction is provided with inside nominal diameter hole, the two sides of housing assembly are symmetrical openings formula, the upper and lower both sides of open interior are respectively provided with a half slot, and the left and right side door assembly coordinated with housing assembly is provided with the half slot coordinated with it, composition full circle.Described side door assembly inside is provided with the duct coordinated with housing assembly and front end cover assembly.Described front end cover assembly comprises drive end bearing bracket body, drive end bearing bracket body is bolted on housing assembly, drive end bearing bracket body interior is provided with gear shaft and rack structure, rack structure and first piston bar are an entirety, first piston bar is located in the first hydraulic cylinder, first hydraulic cylinder is provided with the first hydraulic cylinder, and the first hydraulic cylinder is fixedly connected with drive end bearing bracket body by the first attachment screw; Gear shaft is connected by key with hydraulicefficiency hinge, and hydraulicefficiency hinge and side door hinge and side door assembly adopt load-bearing nut to be connected, and located by alignment pin between hydraulicefficiency hinge and side door hinge and side door assembly three, described alignment pin is four.Described rear end cap assembly comprises rear end cap, and rear end cap offers groove; Rear end cap is fixedly connected with housing assembly by the second attachment screw, is provided with bearing pin gear, idler gear and tooth bar in rear end cap, and described bearing pin wheel and rack is in transmission connection by idler gear; Tooth bar is threaded connection the second piston rod, second piston rod is located in the second hydraulic cylinder, second piston rod and the second hydraulic cylinder are between the second hydraulic cylinder and the 3rd hydraulic cylinder, second hydraulic cylinder and the 3rd hydraulic cylinder all offer hydraulic fluid port, and the second hydraulic cylinder, the second piston rod, the second hydraulic cylinder and the 3rd hydraulic cylinder are connected by hydraulic screw and are fixed on rear end cap; Be provided with pin shaft hole in rear end cap, bearing pin gear is positioned at rear end cap and housing and fits side, coaxial with pin shaft hole, offers square hole in the middle of bearing pin gear.Described bearing pin part assembly comprises bearing pin, and bearing pin is arranged in the full circle of the half slot composition on the half slot of housing assembly opening and side door assembly, and bearing pin one end is square, coordinates with the square hole offered in the middle of bearing pin gear; The square end of bearing pin is provided with rotary stopper block, the square hole matched with the square end of bearing pin is offered in the middle of rotary stopper block, be provided with two hypotenuses outside square hole, locating piece one end is provided with the hypotenuse matched with described hypotenuse, and locating piece is fixedly installed in the groove on rear end cap.
As further program of the utility model: be provided with fairshaped transition arc in described flashboard chamber.
As the utility model further scheme: the leading flank of described housing assembly is provided with internal holes and outer liquid force feed access interface.
As the utility model further scheme: described hydraulicefficiency hinge, be provided with the hydraulic circuit hole that inside communicates between side door hinge and side door assembly.
Compared with prior art, the beneficial effects of the utility model are: be provided with fairshaped transition arc in U-shaped flashboard flashboard chamber described in the utility model, adopt and rotarily open side door and the method changing flashboard, decrease the space required for working site, decrease the time that side door is opened, and when preventing closing and opening side doors, flashboard assembly and housing assembly form and interfere.Located by alignment pin between the utility model hydraulicefficiency hinge and side door hinge and side door assembly three, can not rotate when guaranteeing that side door is opened.The utility model realizes the switching manipulation to flashboard assembly by the circuit-breaker oil port of housing assembly.Adopt hydraulic-driven to rotate side door assembly, and do not affect the action of original switch oil circuit, reduce the volume of equipment, for execute-in-place brings more convenience.The rotation of the utility model bearing pin is realized by the Driven by Hydraulic Cylinder rack-and-pinion on rear end cap, and the rotation of side door is realized by the Driven by Hydraulic Cylinder rack-and-pinion on drive end bearing bracket, reduces the labour intensity of workman.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the rear elevation of Fig. 1.
Fig. 3 is the structural representation of the utility model side door when opening.
Fig. 4 is the structural representation of housing assembly.
Fig. 5 is the structural representation of side door assembly.
Fig. 6 is the structural representation of front end cover assembly.
Fig. 7 is the structural representation of rear end cap assembly.
Fig. 8 is the structural scheme of mechanism of flashboard assembly.
Fig. 9 is the structural representation of piston portion assembly.
Figure 10 is the structural representation of bearing pin part assembly.
Figure 11 is fairshaped transition arc schematic diagram in flashboard chamber.
Figure 12 is the explosive view of front end cover assembly.
Figure 13 is the explosive view of rear end cap assembly.
Figure 14 is the explosive view of pin parts assembly.
In figure: 1-housing assembly, 2-side door assembly, 3-front end cover assembly, 31-first hydraulic cylinder, 32-first hydraulic cylinder, 33-first piston bar, 34-bolt, 35-side door hinge, 36-load-bearing nut, 37-alignment pin, 38-hydraulicefficiency hinge, 39-drive end bearing bracket body, 310-first attachment screw, 311-gear shaft, 4-rear end cap assembly, 41-second attachment screw, 42-rear end cap, 43-bearing pin gear, 44-idler gear, 45-tooth bar, 46-second hydraulic cylinder, 47-second piston rod, 48-second hydraulic cylinder, 49-the 3rd hydraulic cylinder, 410-hydraulic screw, 5-flashboard assembly, 6-piston portion assembly, 7-bearing pin part assembly, 71-pin shaft baffle, 72-bearing pin, 73-rotary stopper block, 74-locating piece.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1 ~ 14, in the utility model embodiment, a kind of new-type without side door bolt ram preventer, comprise housing assembly 1, side door assembly 2, front end cover assembly 3, rear end cap assembly 4, flashboard assembly 5, piston portion assembly 6 and bearing pin part assembly 7; Described side door assembly 2 is two, is arranged on the left and right sides of housing assembly 1 respectively; Described front end cover assembly 3 and rear end cap assembly 4 are two, are located at the two ends, left and right of the front and back sides of housing assembly 1 respectively; Described piston portion assembly 6 is two, is arranged on two side door assemblies 2 respectively inner; Side door assembly 2 is stretched out in described piston portion assembly 6 one end, and extension and the flashboard assembly 5 of piston portion assembly 6 are linked into an integrated entity by the hook of piston, and described flashboard assembly 5 is located in the flashboard chamber in housing assembly 1; Described bearing pin part assembly 7 is four, is located between housing assembly 1 and side door assembly 2.Described housing assembly 1 vertical direction is provided with inside nominal diameter hole, the two sides of housing assembly 1 are symmetrical openings formula, the upper and lower both sides of open interior are respectively provided with a half slot, and the left and right side door assembly 2 coordinated with housing assembly 1 is provided with the half slot coordinated with it, composition full circle.Described side door assembly 2 inside is provided with the duct coordinated with housing assembly 1 and front end cover assembly 3.Described front end cover assembly 3 comprises drive end bearing bracket body 39, drive end bearing bracket body 39 is fixed on housing assembly 1 by bolt 34, drive end bearing bracket body 39 inside is provided with gear shaft 311 and rack structure, rack structure and first piston bar 33 are an entirety, first piston bar 33 is located in the first hydraulic cylinder 32, first hydraulic cylinder 32 is provided with the first hydraulic cylinder 31, first hydraulic cylinder 31 and is fixedly connected with drive end bearing bracket body 39 by the first attachment screw 310; Gear shaft 311 is connected by key with hydraulicefficiency hinge 38, hydraulicefficiency hinge 38 adopts load-bearing nut 36 to be connected with side door hinge 35 and side door assembly 2, located by alignment pin 37 between hydraulicefficiency hinge 38 and side door hinge 35 and side door assembly 2 three, described alignment pin 37 is four.Described rear end cap assembly 4 comprises rear end cap 42, and rear end cap 42 offers groove; Rear end cap 42 is fixedly connected with housing assembly 1 by the second attachment screw 41, is provided with bearing pin gear 43, idler gear 44 and tooth bar 45 in rear end cap 42, and described bearing pin gear 43 is in transmission connection by idler gear 44 with tooth bar 45; Tooth bar 45 is threaded connection the second piston rod 47, second piston rod 47 is located in the second hydraulic cylinder 48, second piston rod 47 and the second hydraulic cylinder 48 are between the second hydraulic cylinder 46 and the 3rd hydraulic cylinder 49, second hydraulic cylinder 46 and the 3rd hydraulic cylinder 49 all offer hydraulic fluid port, and the second hydraulic cylinder 46, second piston rod 47, second hydraulic cylinder 48 and the 3rd hydraulic cylinder 49 are connected by hydraulic screw 410 and are fixed on rear end cap 42; Be provided with pin shaft hole in rear end cap 42, bearing pin gear 43 is positioned at rear end cap 42 and housing and fit side, and coaxial with pin shaft hole, bearing pin gear 43 centre offers square hole.Described bearing pin part assembly 7 comprises bearing pin 72, and bearing pin 72 is arranged in the full circle of the half slot composition on the half slot of housing assembly 1 opening and side door assembly 2, and bearing pin 72 one end is square, coordinates with the square hole offered in the middle of bearing pin gear 43; The square end of bearing pin 72 is provided with rotary stopper block 73, the square hole matched with the square end of bearing pin 72 is offered in the middle of rotary stopper block 73, two hypotenuses are provided with outside square hole, locating piece 74 one end is provided with the hypotenuse matched with described hypotenuse, and locating piece 74 is fixedly installed in the groove on rear end cap 42.
Fairshaped transition arc is provided with in flashboard chamber described in the utility model, U-shaped flashboard is adopted to rotarily open side door and change the method for flashboard, decrease the space required for working site, decrease the time that side door is opened, and when preventing closing and opening side doors, flashboard assembly 5 and housing assembly 1 are formed and interfere; The two sides of housing assembly 1 are symmetrical openings formula, the upper and lower both sides of open interior are respectively provided with a half slot, the left and right side door assembly 2 coordinated with housing assembly 1 is provided with the half slot coordinated with it, composition full circle, be used for placing the parts of bearing pin part assembly 7, realize the locking to side door assembly 2.
The utility model is provided with for holding the internal holes of hydraulic fluid and outer liquid force feed access interface on the leading flank of housing assembly 1, and form a closed passage with front end cover assembly body 39 and left and right side door assembly 2, realize the Kai Heguan to ram block.
Located by alignment pin 37 between the utility model hydraulicefficiency hinge 38 and side door hinge 35 and side door assembly 2 three, can not rotate when guaranteeing that side door is opened.Described hydraulicefficiency hinge 38, between side door hinge 35 and side door assembly 2, be provided with the hydraulic circuit hole that inside communicates, hydraulicefficiency hinge 38 and the hydraulic circuit hole being equipped with inside between front end cover assembly 3 and side door assembly 2 and communicating, like this, namely can by the switching manipulation of circuit-breaker oil port realization to flashboard assembly 5 of housing assembly 1.Adopt hydraulic-driven to rotate side door assembly 2, and do not affect the action of original switch oil circuit, reduce the volume of equipment, for execute-in-place brings more convenience.
Bearing pin gear 43, idler gear 44 and tooth bar 45 is provided with in the utility model rear end cap 42, described bearing pin gear 43 is in transmission connection by idler gear 44 with tooth bar 45, tooth bar 45 is driven to drive idler gear 44 drive pin shaft gear 43 by the second hydraulic cylinder 48, thus drive bearing pin 72, bearing pin 72 is made to realize the rotation of certain angle, for the locking of bearing pin 72 and open mode set fixing position, coordinate the operation of closing and opening side doors.
Operating principle of the present utility model is:
Side door be in opening need close time, hydraulic oil is entered from one end of the first hydraulic cylinder, hydraulic oil promotes first piston bar and moves horizontally, by the rack and pinion axle engagement on first piston bar, gear shaft is rotated, and gear shaft is connected by key and hydraulicefficiency hinge and side door hinge and side door, thus side door assembly is driven to rotate.Moved horizontally by the second Driven by Hydraulic Cylinder second piston rod, the second piston rod promotes tooth bar and moves horizontally, and moving horizontally of tooth bar drives idler gear to rotate, and is rotated, thus bearing pin is rotated by intermediate gear drives bearing pin gear.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this manual is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of manual is only for clarity sake, those skilled in the art should by manual integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.

Claims (4)

1. new-type without a side door bolt ram preventer, comprise housing assembly (1), side door assembly (2), front end cover assembly (3), rear end cap assembly (4), flashboard assembly (5), piston portion assembly (6) and bearing pin part assembly (7), it is characterized in that: described side door assembly (2) is two, is arranged on the left and right sides of housing assembly (1) respectively, described front end cover assembly (3) and rear end cap assembly (4) are two, are located at the two ends, left and right of the front and back sides of housing assembly (1) respectively, described piston portion assembly (6) is two, is arranged on two side door assemblies (2) respectively inner, side door assembly (2) is stretched out in described piston portion assembly (6) one end, extension and the flashboard assembly (5) of piston portion assembly (6) are linked into an integrated entity by the hook of piston, and described flashboard assembly (5) is located in the flashboard chamber in housing assembly (1), described bearing pin part assembly (7) is four, is located between housing assembly (1) and side door assembly (2), described housing assembly (1) vertical direction is provided with inside nominal diameter hole, the two sides of housing assembly (1) are symmetrical openings formula, the upper and lower both sides of open interior are respectively provided with a half slot, the left and right side door assembly (2) coordinated with housing assembly (1) is provided with the half slot coordinated with it, composition full circle, described side door assembly (2) inside is provided with the duct coordinated with housing assembly (1) and front end cover assembly (3), described front end cover assembly (3) comprises drive end bearing bracket body (39), drive end bearing bracket body (39) is fixed on housing assembly (1) by bolt (34), drive end bearing bracket body (39) inside is provided with gear shaft (311) and rack structure, rack structure and first piston bar (33) are an entirety, first piston bar (33) is located in the first hydraulic cylinder (32), first hydraulic cylinder (32) is provided with the first hydraulic cylinder (31), first hydraulic cylinder (31) is fixedly connected with drive end bearing bracket body (39) by the first attachment screw (310), gear shaft (311) is connected by key with hydraulicefficiency hinge (38), hydraulicefficiency hinge (38) adopts load-bearing nut (36) to be connected with side door hinge (35) and side door assembly (2), by alignment pin (37) location between hydraulicefficiency hinge (38) and side door hinge (35) and side door assembly (2) three, described alignment pin (37) is four, described rear end cap assembly (4) comprises rear end cap (42), and (42) offer groove to rear end cap, rear end cap (42) is fixedly connected with housing assembly (1) by the second attachment screw (41), be provided with bearing pin gear (43), idler gear (44) and tooth bar (45) in rear end cap (42), described bearing pin gear (43) and tooth bar (45) are in transmission connection by idler gear (44), tooth bar (45) is threaded connection the second piston rod (47), second piston rod (47) is located in the second hydraulic cylinder (48), second piston rod (47) and the second hydraulic cylinder (48) are positioned between the second hydraulic cylinder (46) and the 3rd hydraulic cylinder (49), second hydraulic cylinder (46) and the 3rd hydraulic cylinder (49) all offer hydraulic fluid port, second hydraulic cylinder (46), second piston rod (47), second hydraulic cylinder (48) and the 3rd hydraulic cylinder (49) are connected by hydraulic screw (410) and are fixed on rear end cap (42), rear end cap is provided with pin shaft hole in (42), and bearing pin gear (43) is positioned at rear end cap (42) and housing and fit side, and coaxial with pin shaft hole, bearing pin gear (43) centre offers square hole, described bearing pin part assembly (7) comprises bearing pin (72), bearing pin (72) is arranged in the full circle of the half slot composition on the half slot of housing assembly (1) opening and side door assembly (2), bearing pin (72) one end is square, coordinates with the square hole offered in the middle of bearing pin gear (43), the square end of bearing pin (72) is provided with rotary stopper block (73), the square hole matched with the square end of bearing pin (72) is offered in the middle of rotary stopper block (73), two hypotenuses are provided with outside square hole, locating piece (74) one end is provided with the hypotenuse matched with described hypotenuse, and locating piece (74) is fixedly installed in the groove on rear end cap (42).
2. one according to claim 1 is new-type without side door bolt ram preventer, it is characterized in that: be provided with fairshaped transition arc in described flashboard chamber.
3. one according to claim 1 is new-type without side door bolt ram preventer, it is characterized in that: the leading flank of described housing assembly (1) is provided with internal holes and outer liquid force feed access interface.
4. one according to claim 1 is new-type without side door bolt ram preventer, it is characterized in that: described hydraulicefficiency hinge (38), be provided with the hydraulic circuit hole that inside communicates between side door hinge (35) and side door assembly (2).
CN201520238987.0U 2015-04-20 2015-04-20 A kind of new-type without side door bolt ram preventer Active CN204552679U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520238987.0U CN204552679U (en) 2015-04-20 2015-04-20 A kind of new-type without side door bolt ram preventer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520238987.0U CN204552679U (en) 2015-04-20 2015-04-20 A kind of new-type without side door bolt ram preventer

Publications (1)

Publication Number Publication Date
CN204552679U true CN204552679U (en) 2015-08-12

Family

ID=53827806

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520238987.0U Active CN204552679U (en) 2015-04-20 2015-04-20 A kind of new-type without side door bolt ram preventer

Country Status (1)

Country Link
CN (1) CN204552679U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105201441A (en) * 2015-09-08 2015-12-30 江苏金石富源机械有限公司 Hinge blowout preventer provided with lubricating device externally and application of hinge blowout preventer
CN109415928A (en) * 2016-05-02 2019-03-01 卡梅伦技术有限公司 Preventer with wide body flange
US11459844B2 (en) * 2019-08-27 2022-10-04 Hydril USA Distribution LLC Blowout preventer system and method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105201441A (en) * 2015-09-08 2015-12-30 江苏金石富源机械有限公司 Hinge blowout preventer provided with lubricating device externally and application of hinge blowout preventer
CN105201441B (en) * 2015-09-08 2023-11-21 江苏金石富源机械有限公司 Hinge blowout preventer with external lubricating device and application thereof
CN109415928A (en) * 2016-05-02 2019-03-01 卡梅伦技术有限公司 Preventer with wide body flange
US11098550B2 (en) 2016-05-02 2021-08-24 Schlumberger Technology Corporation Blowout preventer with wide flange body
CN109415928B (en) * 2016-05-02 2021-10-08 斯伦贝谢技术有限公司 Blowout preventer with wide flange body
US11174696B2 (en) 2016-05-02 2021-11-16 Schlumberger Technology Corporation Blowout preventer with choke and kill line pass through conduits
US11459844B2 (en) * 2019-08-27 2022-10-04 Hydril USA Distribution LLC Blowout preventer system and method

Similar Documents

Publication Publication Date Title
CN204552679U (en) A kind of new-type without side door bolt ram preventer
CN205858000U (en) A kind of can the world bolt device of linkage from top to bottom
CN201588595U (en) Primary/secondary hydraulic cylinder ram type blowout preventer
US20220136342A1 (en) Hydraulic rotary side-swing elevator
CN206220081U (en) A kind of ship door structure for ship lift
CN203796058U (en) Protective air-tight flood gate opened and closed in swing mode in metro section
CN110218568B (en) Automatic interlocking opening and closing device for bridge pipe turning plate and ascending pipe water seal cover of coke oven top
CN207892582U (en) A kind of well drilling blowout prevention device
CN204437432U (en) Mining electric hydraulic control quick closing valve mechanical transmission mechanism
CN203476092U (en) Protective door device and sealing strip sawing machine
CN205189556U (en) Door lock device of hatch door of area upset window
CN204283132U (en) A kind of multi-functional closed guard gate
CN209469410U (en) A kind of blowout preventing control apparatus
CN211473891U (en) Steel construction threshold biparting protection sealing door that lives
CN2628718Y (en) Safety locking device for hydraulic ram blosout preventer
CN107100481A (en) A kind of automatic open close door and window
CN204283133U (en) A kind of closed guard gate with ventilation function
CN204160255U (en) For the stacked sliding door of longitudinal cutting machine tool
CN203701895U (en) Sealing device at lower part of main door leaf of metro protective airtight partition door
CN204060288U (en) One is spring pneumatically
CN203452597U (en) Antitheft door of outdoor antitheft machine room
CN205277359U (en) Cut ram -type preventer with combination oil circuit
CN209621004U (en) A kind of window opener locking device
CN206987603U (en) A kind of automatic open close door and window
CN205225009U (en) School's braking bidirectional gate

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant