CN108454465A - The subway contact net upkeep operation platform of included sink deck - Google Patents

The subway contact net upkeep operation platform of included sink deck Download PDF

Info

Publication number
CN108454465A
CN108454465A CN201810539559.XA CN201810539559A CN108454465A CN 108454465 A CN108454465 A CN 108454465A CN 201810539559 A CN201810539559 A CN 201810539559A CN 108454465 A CN108454465 A CN 108454465A
Authority
CN
China
Prior art keywords
removable cover
platform
job platform
sink deck
main job
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.)
Granted
Application number
CN201810539559.XA
Other languages
Chinese (zh)
Other versions
CN108454465B (en
Inventor
韩建锋
吕昭
高利鹏
张旭峰
李艳妮
赵力
孙世珠
张保强
王乐
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.)
Baoji CRRC Times Engineering Machinery Co Ltd
Original Assignee
Baoji CSR Times Engineering Machinery 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 Baoji CSR Times Engineering Machinery Co Ltd filed Critical Baoji CSR Times Engineering Machinery Co Ltd
Priority to CN201810539559.XA priority Critical patent/CN108454465B/en
Publication of CN108454465A publication Critical patent/CN108454465A/en
Application granted granted Critical
Publication of CN108454465B publication Critical patent/CN108454465B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60MPOWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00Power supply lines for contact with collector on vehicle
    • B60M1/12Trolley lines; Accessories therefor
    • B60M1/28Manufacturing or repairing trolley lines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Special Chairs (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

A kind of subway contact net upkeep operation platform of included sink deck is provided, including main job platform, main job platform one end lower part is equipped with sinking type operation platform, sink deck opening is offered on the main job platform of sinking type operation platform institute face, sink deck opening is closed by the detachable lid of removable cover component.The present invention is internally provided with sinking type operation platform in main job platform, after engineering truck enters tunnel, operating personnel may stand in pit or the edge progress operation for being sitting in pit, leg is put into pit, operation becomes very comfortable, efficiently solve the problems, such as that contact net inspection operation is inconvenient in tunnel, improves operating efficiency;And sink deck opening can be closed by removable cover component lid, facilitate staff's operation on platform in other sections in non-tunnel or period, make job platform that can be used to complete the external net-fault operation in tunnel, it can be used for contact network in tunnel operation, the integration degree for improving job platform, brings convenience for staff.

Description

The subway contact net upkeep operation platform of included sink deck
Technical field
The invention belongs to job platform technical fields, and in particular to a kind of subway contact net upkeep operation of included sink deck Platform.
Background technology
Job platform is the important composition component of contact net railway engineering tool car, while being also the important of contact net maintenance Tool.With the fast development of China's electric railway, efficiency and quality to contact net overhaul of the equipments propose higher want It asks.Wherein, application No. is 201720047963.6 patents to disclose a kind of perforation hoistable platform, mainly solves current rail Perforation platform railing is cumbersome in contact net work, occupies " skylight " time longer technical problem;Application No. is 201110227059.0 patent disclose a kind of Working platform leveling device for catenary working car of railway contact line, efficiently solve Operation vehicle for contact wire construction worker in the case of superelevation of outer rail can not stablize station in construction operation on job platform Vertical problem.Above-mentioned existing contact net upkeep operation platform, since elemental height has determined and immutable, when subway connects After contact network operation car enters tunnel, job platform is less than person height with a distance from tunnel top, and operating personnel is in maintenance tunnel It when the devices such as contact net positioning, generally requires and bends over or semi-crouch operation, many inconvenience are brought to operating personnel's construction.Therefore have Necessity proposes to improve.
Invention content
Present invention solves the technical problem that:A kind of subway contact net upkeep operation platform of included sink deck is provided, this Invention is internally provided with sinking type operation platform in main job platform, and after engineering truck enters tunnel, operating personnel can stand In sinking type operation platform or it is sitting in the progress operation of sink deck open edge, leg is put into pit, and operation becomes very comfortable, has Effect solves the problems, such as that contact net inspection operation is inconvenient in tunnel, improves operating efficiency;And sink deck opening can lead to It crosses movable cover plate assembly lid to close, facilitates staff's operation on platform in other sections in non-tunnel or period, make operation horizontal Platform can be used to complete the external net-fault operation in tunnel, can be used for the operation of contact network in tunnel, improve the collection of job platform At degree is changed, many convenience are brought for staff.
The technical solution adopted by the present invention:The subway contact net upkeep operation platform of included sink deck, including main operation Platform, the main job platform both sides are equipped with railing, and main job platform one end lower part is equipped with sinking type operation platform, described Sink deck opening is offered on the main job platform of sinking type operation platform institute face, the sink deck opening passes through activity The detachable lid of cover plate assembly closes;The main job platform other end lower part is equipped with the stage+module being fixedly connected with lifting column The main job platform of seat, stage+module seat institute face is equipped with construction opening, and the construction opening can by movable floor Detachable lid closes;Main job platform one end edge is equipped with wire support device, and the main job platform other end edge is set There is line guide device.
Wherein, the sinking type operation platform surrounding edge is fixedly connected and is made with sink deck opening edge edge by skeleton Sinking type operation platform is relative to main job platform at pit shape, and the sinking type operation platform is relative to main job platform plane Submergence depth be 350~550mm.
Wherein, the removable cover component includes 1 removable cover I and multiple removable covers II, I He of the removable cover The mutually overlap joint of removable cover II closes sink deck vent cover, the removable cover I 4 while and whens removable cover II 3 be equipped with It turns up gripper edge, the remaining edge of the removable cover II, which is equipped with, carries out adjacent removable cover I or II edge of removable cover The support bar of support, the sink deck opening edge are equipped with along supporting surface and carry out damping to removable cover I or removable cover II The rubber pad of support and by the gripper edge clamping of turning up at II edge of removable cover I or removable cover from pinch seal adhesive tape, institute It states and also is provided on the support bar of removable cover II from pinch seal adhesive tape.
Further, the removable cover I and removable cover II are formed using welding after the riveting of aluminium alloy molded piece, described Removable cover I and removable cover II are by triangulation chain and sink deck opening edge along clamping, the removable cover I and removable cover II upper surface is equipped with knob.
Further, the main job platform side is equipped with the storage rack for storing removable cover component.
Further, the main job platform and sinking type operation platform include skeleton made of useful shaped steel, described Trepanning is uniformly provided on skeleton, the main job platform both ends edge is equipped with bumper, and the main job platform both sides are equipped with Hanging ring.
The present invention compared with prior art the advantages of:
1, this programme is internally provided with sinking type operation platform in main job platform, after engineering truck enters tunnel, makees Industry personnel may stand in sinking type operation platform or the edge progress operation for being sitting in sink deck opening, leg are put into pit, made Industry becomes very comfortable, efficiently solves the problems, such as that contact net inspection operation is inconvenient in tunnel, improves operating efficiency;
2, by removable cover component by the sink deck vent cover on the main job platform of sinking type operation platform face It closes, removable cover component strength is higher, facilitates staff's operation on platform in other sections in non-tunnel or period, makes work Industry platform can be used to complete the operations such as tunnel outer contacting rack line, unwrapping wire, inspection, maintenance, maintenance, and it is inscribed to can be used for tunnel The upkeep operations platform such as net-fault stringing, unwrapping wire, inspection, maintenance, maintenance, improves the integration degree of job platform, makes operation Platform is more convenient to use;
3, by removable cover edge and sink deck opening skeleton contact site by from pinch seal adhesive tape and rubber pad It is sealed, ensures that sealing and the anti-seismic performance of stripper plate, sealing and damping are worked along both lines, improve the stabilization that job platform uses Property;
4, this programme is by uniform pore openings on job platform steel skeleton, in the case of proof strength, has been carried out gently to platform Quantitative design reduces platform overall weight.
Description of the drawings
Fig. 1 is the structural front view of the present invention;
Fig. 2 is the structure top view of the present invention;
Fig. 3 is the structure left view of the present invention;
Fig. 4 is sinking type operation platform and main job platform attachment structure schematic diagram in the present invention;
Fig. 5 is I structure enlargement diagram in Fig. 4
Fig. 6 is II structure enlargement diagram in Fig. 4;
Fig. 7 is the present invention and lifting column attachment structure schematic diagram.
Specific implementation mode
1-7 describes the embodiment of the present invention below in conjunction with the accompanying drawings.
The subway contact net upkeep operation platform of included sink deck, as shown in Figure 1, 2, 3, including main job platform 1, institute It states 1 both sides of main job platform and is equipped with railing 2, person works provide strong safety guarantee for effect;The main job platform 1 Both ends edge is equipped with bumper 16, due to space when bumper 16 can effectively prevent platform end and car body gap personnel's ascending stair The narrow hidden danger easily met and discussed;1 both sides of main job platform are equipped with hanging ring 17, and hanging ring 17 is used for the lifting of platform;The master 1 one end edge of job platform is equipped with wire support device 18, and 1 other end edge of the main job platform is equipped with line guide device 19, supporting guide when for assisting contact net to overhaul.
As shown in Figure 1, 2, 3,1 one end lower part of the main job platform is equipped with sinking type operation platform 3, and the sunk type is made 3 surrounding edge of industry platform is fixedly connected with 4 edges of sink deck opening by skeleton and makes sinking type operation platform 3 relative to master Job platform 1 at pit shape, the sinking type operation platform 3 relative to the submergence depth of 1 plane of main job platform be 350~ 550mm.Sinking type operation platform 3, after engineering truck enters tunnel, operation people is arranged in the present invention inside main job platform 1 The edge that member may stand in sinking type operation platform 3 or be sitting in pit carries out operation, and leg is put into pit, and operation is made to become very It is comfortable, efficiently solve the problems, such as that contact net inspection operation is inconvenient in tunnel, improves operating efficiency.
Sink deck opening 4 is offered on the main job platform 1 of 3 face of the sinking type operation platform, it is described to sink to putting down Platform opening 4 realizes that detachable lid closes by removable cover component 5.Specifically, as shown in Figure 4,5, 6, the removable cover board group Part 5 includes 1 removable cover I 6 and multiple removable covers II 7, the removable cover I 6 and removable cover II 7 mutually overlap joint will under The heavy lid of platform openings 4 closes, the removable cover I 64 while and whens removable cover II 73 be equipped with gripper edge 22 of turning up, the work An II 7 remaining edge of dynamic cover board is equipped with the support bar 8 being supported to adjacent removable cover I 6 or II 7 edge of removable cover, This structure can ensure that three sides of each removable cover are supported, and certain removable cover both sides are supported also to realize the present invention. 4 edge skeletal support faces of the sink deck opening are equipped with carries out shock-absorbing support to removable cover I 6 or removable cover II 7 Rubber pad 10 and by the gripper edge 22 of turning up at II 7 edge of removable cover I 6 or removable cover clamp from pinch seal adhesive tape 9, institute It states and also is provided on the support bar 8 of removable cover II 7 from pinch seal adhesive tape 9.In the present embodiment, as shown in Fig. 2, sink deck is opened Mouth 4 is closed using 1 removable cover I 6 and 3 lids of removable covers II 7, and four removable cover mounting structures are 4 pieces of stripper plates or more Overlap joint, that is to say, that 3 removable covers II 7 sequentially cover conjunction from 4 one end of sink deck opening, lean on the removable cover II 7 of close end Three sides are by the 4 corresponding edge supporting surfaces support of sink deck opening and its gripper edge 22 of turning up by corresponding from pinch seal Adhesive tape 9 clamps, other two removable covers II 7 with respect to both sides by the 4 corresponding edge supporting surfaces support of sink deck opening and Its gripper edge 22 of turning up is clamped by corresponding from pinch seal adhesive tape 9, and another side then passes through removable cover adjacent thereto The support bar 8 not being supported on II 7 on one side is supported and is clamped from pinch seal adhesive tape 9 by corresponding thereon, removable cover I 6 close the remaining notch lid of sink deck 4 other ends of opening, and removable cover I 63 is while corresponding by sink deck opening 4 It is supported along supporting surface and its gripper edge 22 of turning up is clamped by corresponding from pinch seal adhesive tape 9, removable cover I 6 is other on one side By the support of support bar 8 not being supported on removable cover II 7 adjacent thereto on one side and by corresponding close from clamping thereon Seal strip 9 clamps.Above-mentioned binding structure makes removable cover I 6 living ensure that four sides have support, removable cover II 7 to ensure three side branch Support.Removable cover is sealed with platform skeleton contact site with from pinch seal adhesive tape 9 and rubber pad 10, ensures removable cover Sealing and anti-seismic performance.In addition, the removable cover I 6 and removable cover II 7 pass through triangulation chain 11 and sink deck opening 4 Edge clamping prevents the vibrations of removable cover;The removable cover I 6 and II 7 upper surface of removable cover are equipped with knob 12, side Just it dismantles.1 side of main job platform is equipped with the storage rack 15 for storing removable cover component 5, and removable cover is made to store Light and fast easily takes and easily puts, and bolt is fixed, and can be removed when not needing.
Preferably, the removable cover I 6 and removable cover II 7 are formed using welding after the riveting of aluminium alloy molded piece, cover board Inside is welded in using crisscross reinforcing rib point on Figured aluminium plate, and intensity is high, and light weight is easy to disassemble.This special design The intensity that ensure that removable cover, normally outside tunnel when operation, operating personnel can be normally on platform and removable cover Upper operation, when entering tunneling operation, platform elemental height is certain, and operating personnel can open triangulation chain 11 respectively, pass through knob 12 remove removable cover one by one, are put in storage rack 15.
The present invention is closed on main job platform 14 lid of sink deck opening by removable cover component 5, removable cover board group 5 intensity of part is higher, facilitates staff's operation on platform in other sections in non-tunnel or period, makes job platform that can use In completing the operations such as tunnel outer contacting rack line, unwrapping wire, inspection, maintenance, maintenance, it can be used for contact network in tunnel stringing, put The upkeep operations platform such as line, inspection, maintenance, maintenance, improves the integration degree of job platform, job platform is made to use It is more convenient.The centre of gyration load-carrying of this job platform is less than 1000kg, and front end load-carrying is less than 300kg, and pit load-carrying is less than 300kg can meet 3~4 people operation simultaneously, and system has the characteristics that function is integrated, meet integrated design theory, beautiful big Side.
As shown in Figure 1, 2,1 other end lower part of the main job platform is equipped with the stage+module being fixedly connected with lifting column 20 Seat 13, the installation of stage+module seat 13 and 20 upper mounting seat of lifting column are installed using bolt, but are welded to connect and can also be realized.It is described flat 1 upper surface of main job platform of 13 face of platform mounting base is equipped with construction opening 21, and the construction opening 21 passes through movable floor 14 Detachable lid closes, and movable floor 14 is removed when being installed or removed with lifting column 20 for main job platform 1, pacifies to platform Mounting base is fastenedly connected or is dismantled at the top of dress seat 13 and lifting column, keeps the dismounting operation of job platform more convenient.Such as Fig. 7 Shown, the present invention is combined with lifting column 20 of the electrification railway contact net upkeep operation vehicle with levelling device, and left and right is rotatable 120 °, it can be achieved that upkeep operation vehicle lift rotary job platform in construction operation on the circuit of superelevation of outer rail automatic or manual Leveling.
The main job platform 1 and sinking type operation platform 3 include using skeleton made of shaped steel, on the skeleton It is even to be equipped with trepanning, light-weight design has been carried out in the case of proof strength, this job platform is made to can be not only used for subway contact net, It can be used for state's iron contact net maintenance.
Above-described embodiment, only presently preferred embodiments of the present invention, is not used for limiting the scope of the present invention, therefore all with this The equivalence changes that content is done described in invention claim should all be included within scope of the invention as claimed.

Claims (6)

1. the subway contact net upkeep operation platform of included sink deck, including main job platform (1), the main job platform (1) both sides are equipped with railing (2), it is characterised in that:Main job platform (1) one end lower part is equipped with sinking type operation platform (3), Main job platform (1) upper surface of sinking type operation platform (3) face offers sink deck opening (4), the sinking Platform openings (4) are closed by the detachable lid of removable cover component (5);Main job platform (1) other end lower part be equipped with The stage+module seat (13) that lifting column (20) is fixedly connected, main job platform (1) upper end of stage+module seat (13) face Face is equipped with construction opening (21), and the construction opening (21) is closed by the detachable lid of movable floor (14);The main operation horizontal Platform (1) one end edge is equipped with wire support device (18), and main job platform (1) other end edge is equipped with line guide device (19)。
2. the subway contact net upkeep operation platform of included sink deck according to claim 1, it is characterised in that:It is described Sinking type operation platform (3) surrounding edge is fixedly connected with sink deck opening (4) edge by skeleton and makes sunk type operation Platform (3) is relative to main job platform (1) at pit shape, and the sinking type operation platform (3) is relative on main job platform (1) The submergence depth of plane is 350~550mm.
3. the subway contact net upkeep operation platform of included sink deck according to claim 1, it is characterised in that:It is described Removable cover component (5) includes 1 removable cover I (6) and multiple removable covers II (7), the removable cover I (6) and activity Cover board II (7) mutually overlap joint closes sink deck opening (4) lid, four side of the removable cover I (6) and removable cover II (7) three While be equipped with gripper edge of turning up (22), one edge of the removable cover II (7) residue be equipped with to adjacent removable cover I (6) or The support bar (8) that removable cover II (7) edge is supported, the sink deck opening (4) edge skeletal support face are equipped with The rubber pad (10) of shock-absorbing support is carried out to removable cover I (6) and removable cover II (7) and by removable cover I (6) or removable cover The gripper edge of turning up (22) at plate II (7) edge clamp from pinch seal adhesive tape (9), the support bar of the removable cover II (7) (8) it also is provided on from pinch seal adhesive tape (9).
4. the subway contact net upkeep operation platform of included sink deck according to claim 3, it is characterised in that:It is described Removable cover I (6) and removable cover II (7) are formed using welding after the riveting of aluminium alloy molded piece, the removable cover I (6) be open (4) edge clamping by triangulation chain (11) and sink deck with removable cover II (7), the removable cover I (6) and Removable cover II (7) upper surface is equipped with knob (12).
5. the subway contact net upkeep operation platform of included sink deck according to claim 1, it is characterised in that:It is described Main job platform (1) upper surface side is equipped with the storage rack (15) for storing removable cover component (5).
6. the subway contact net upkeep operation platform of included sink deck according to claim 1, it is characterised in that:It is described Main job platform (1) and sinking type operation platform (3) include using skeleton made of shaped steel, are uniformly provided with out on the skeleton Hole, main job platform (1) the both ends edge are equipped with bumper (16), and main job platform (1) both sides are equipped with hanging ring (17)。
CN201810539559.XA 2018-05-30 2018-05-30 Subway contact net overhauling operation platform with sinking platform Active CN108454465B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810539559.XA CN108454465B (en) 2018-05-30 2018-05-30 Subway contact net overhauling operation platform with sinking platform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810539559.XA CN108454465B (en) 2018-05-30 2018-05-30 Subway contact net overhauling operation platform with sinking platform

Publications (2)

Publication Number Publication Date
CN108454465A true CN108454465A (en) 2018-08-28
CN108454465B CN108454465B (en) 2024-03-19

Family

ID=63215992

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810539559.XA Active CN108454465B (en) 2018-05-30 2018-05-30 Subway contact net overhauling operation platform with sinking platform

Country Status (1)

Country Link
CN (1) CN108454465B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07257892A (en) * 1994-03-24 1995-10-09 Nippon Sharyo Seizo Kaisha Ltd High-place working vehicle
KR100989822B1 (en) * 2010-07-16 2010-10-29 주식회사 세웅 High-place worktable for agriculture
CN204112739U (en) * 2014-09-09 2015-01-21 中建八局大连建设工程有限公司 A kind of tower crane high-altitude mounting or dismounting operation caisson type operating platform
CN204659728U (en) * 2015-06-15 2015-09-23 宝鸡南车时代工程机械有限公司 There is the Tunnel testing car of three job platforms
KR101747707B1 (en) * 2016-10-28 2017-06-15 대동이앤티(주) Trailer for Inspecting and Maintaining Maglev Rail
CN208306403U (en) * 2018-05-30 2019-01-01 宝鸡中车时代工程机械有限公司 The subway contact net upkeep operation platform of included sink deck

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07257892A (en) * 1994-03-24 1995-10-09 Nippon Sharyo Seizo Kaisha Ltd High-place working vehicle
KR100989822B1 (en) * 2010-07-16 2010-10-29 주식회사 세웅 High-place worktable for agriculture
CN204112739U (en) * 2014-09-09 2015-01-21 中建八局大连建设工程有限公司 A kind of tower crane high-altitude mounting or dismounting operation caisson type operating platform
CN204659728U (en) * 2015-06-15 2015-09-23 宝鸡南车时代工程机械有限公司 There is the Tunnel testing car of three job platforms
KR101747707B1 (en) * 2016-10-28 2017-06-15 대동이앤티(주) Trailer for Inspecting and Maintaining Maglev Rail
CN208306403U (en) * 2018-05-30 2019-01-01 宝鸡中车时代工程机械有限公司 The subway contact net upkeep operation platform of included sink deck

Also Published As

Publication number Publication date
CN108454465B (en) 2024-03-19

Similar Documents

Publication Publication Date Title
CN109398600A (en) The installation method of containment system angular region insulation module in a kind of LNG ship
CN208306403U (en) The subway contact net upkeep operation platform of included sink deck
CN206233099U (en) A kind of Collison fence for bridge construction and security protection platform
CN202989702U (en) Track switch hoisting transportation operation device
CN108454465A (en) The subway contact net upkeep operation platform of included sink deck
CN207027315U (en) A kind of city railway vehicle frock provision for disengagement
CN201338912Y (en) Overhead traveling crane for shipbuilding
CN209482687U (en) A kind of Super High exterior frame column construction operation platform
CN203034370U (en) Walking car used for maintaining suspended rails
CN205973521U (en) Extended type hangs in cabin
CN204357138U (en) Simple steel structure hoisting frame
CN205684924U (en) A kind of novel wind power tower door frame welding protecting platform
CN212507276U (en) Aluminum alloy container mounting truss walking board assembly
CN204873680U (en) Portable portable building lifting machine device
CN204913154U (en) Visitor car roof skeleton welding frock
CN209179784U (en) A kind of trolley for shield tunnel secondary operation
CN210558936U (en) Rail trolley for welding sacrificial anode
CN203559571U (en) Movable rail type climbing frame of all-steel structure
CN202296886U (en) Hoisting device for installing oversized radial gate of hydropower station
CN205967935U (en) Rail vehicle equipment compartment metal wire way welding frock
CN202369932U (en) Bridge curtain board installation trolley
CN205577269U (en) Metal roofing structure bolt fixed establishment
CN211949526U (en) Annular double rail
CN204823735U (en) Crane girder structure
CN204867957U (en) Lift operation panel of visitor car roof skeleton welding frock

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant