CN211524016U - Double-working-surface guide frame climbing type working platform and system - Google Patents

Double-working-surface guide frame climbing type working platform and system Download PDF

Info

Publication number
CN211524016U
CN211524016U CN201921226325.6U CN201921226325U CN211524016U CN 211524016 U CN211524016 U CN 211524016U CN 201921226325 U CN201921226325 U CN 201921226325U CN 211524016 U CN211524016 U CN 211524016U
Authority
CN
China
Prior art keywords
column
platform
double
triangular
work platform
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
CN201921226325.6U
Other languages
Chinese (zh)
Inventor
姜传库
曹鑫环
张永前
杨忠玉
刘建国
安焕章
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.)
Beijing Galaxy Formwork & Scaffolding Engineering Co ltd
Original Assignee
Beijing Galaxy Formwork & Scaffolding Engineering 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 Beijing Galaxy Formwork & Scaffolding Engineering Co ltd filed Critical Beijing Galaxy Formwork & Scaffolding Engineering Co ltd
Priority to CN201921226325.6U priority Critical patent/CN211524016U/en
Application granted granted Critical
Publication of CN211524016U publication Critical patent/CN211524016U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Movable Scaffolding (AREA)

Abstract

The utility model provides a two working face safety protection platforms of over-and-under type and system, work platform includes support guide pillar system, operating system, protection system and drive and control system, support guide pillar system includes base, triangle stand, attaches wall device and top stand, the triangle stand is installed perpendicularly on the base, the triangle stand is through attaching the wall device and connecting the building, operating system fixed connection be in triangle stand middle section, the top stand is located the operating system top, drive and control system is located the operating system below, protection system sets up operating system week side safety protection platform leans on electromechanical control, leans on rack and pinion transmission, carries people, carries the thing along attaching to the stand on building structure with double-deck work platform and goes up and down to realize the automatically controlled lifting scaffold equipment of construction operation. The safety protection platform is simple in structure and convenient to install; the anti-falling is sensitive, safe and reliable.

Description

Double-working-surface guide frame climbing type working platform and system
Technical Field
The utility model belongs to building construction equipment field, concretely relates to double-operation face guide frame climbing formula work platform and system.
Background
With the increasing innovation of the appearance of modern building structures, particularly the development and the demand of assembly type buildings and the requirement of simultaneous multi-storey operation of the outer facades of the buildings. At present, in high-rise reinforced concrete building construction, particularly assembly type building construction, an outer wall climbing frame basically adopts a lifting scaffold, but the used lifting scaffold devices have some defects. Such as:
1. the common lifting equipment which is required to be manually carried by the lifting equipment every time the climbing frame is lifted is an electric hoist and a wall-attached link;
2. the guide rail is also required to be manually turned in the guide rail type climbing frame, so that the labor intensity of workers is high;
3. when the climbing frame body with the guide rail and the lifting point not coaxial is lifted, the climbing frame body is easily influenced by eccentric force, and the frame body has potential safety hazard;
4. the number of non-standard parts is too many, missing installation, misassembly of parts and damage and loss of parts are easy to occur during transportation, great difficulty is brought to management and operation, and great potential safety hazard is brought to constructors;
5. meanwhile, the problems of large labor consumption, more required personnel and inconvenient operation are also caused;
6. the problem that the assembled building can not be stopped on the same floor; the problem of excessive holes of the prefabricated slab due to more wall attachment points;
based on the above analysis, the existing lifting scaffold is greatly limited in the construction process, cannot meet the standards of safety and resource conservation, and needs to develop a new safe, convenient and labor-saving safety operation protection platform urgently.
Therefore the utility model provides a novel double-deck electronic construction platform of attached form, the double-deck electronic construction platform of attached form belong to high-rise or super high-rise building and tall and big space top and facade decoration construction, scaffold system for assembly type building construction. The problem of super high-rise building, the double-deck operation face of assembled building simultaneous operation is solved, stop promptly and lean on promptly, manned year thing, nimble operation, safe and reliable, it is energy-conserving to increase effect, reduces cost of labor and use cost, is a novel construction work platform.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a double-operation-surface guide frame climbing type working platform, the working platform comprises a support guide pillar system, an operating system, a protection system and a drive control system, the support guide pillar system comprises a base, a triangular upright post, a wall attaching device and a top upright post, the triangular upright post is vertically installed on the base, the triangular upright post is connected with a building through the wall attaching device, the operating system is fixedly connected to the middle section of the triangular upright post, the top upright post is positioned above the operating system, the drive control system is positioned below the operating system, and the protection system is arranged on the periphery of the operating system;
furthermore, the protection system comprises an upright post frame and a protection net rack, wherein the protection net rack is arranged in each plane frame of the upright post frame, and the operation system is arranged inside the upright post frame;
furthermore, the operation system comprises a double-layer operation platform, a telescopic rod and a connecting piece, wherein the upright post frame is connected with the protective net rack through bolts to form a frame structure to form a stable framework under the action of load, the telescopic platform is connected with the double-layer operation platform through the telescopic rod, and the double-layer operation platform provides an installation sleeve and a positioning sleeve for the telescopic rod;
furthermore, the triangular upright post is formed by superposing a plurality of triangular upright post standard sections with racks, the wall attaching devices are connected with the triangular upright post standard sections at fixed intervals through high-strength bolts, and the triangular upright post standard sections are connected through the high-strength bolts;
furthermore, the triangular upright standard knot is connected with the top upright through a high-strength bolt, the top upright is arranged at the top of the triangular upright, a vertical limiting device and a top upright rack are arranged on the top upright, and the top upright rack is fixed in the middle of the top upright;
furthermore, both sides of the base are also provided with a telescopic device and an adjustable supporting leg, the telescopic device is connected with the ground through the adjustable supporting leg, a strong supporting leg is arranged below the base, and the base is connected with the ground through the strong supporting leg and the adjustable supporting leg;
furthermore, the wall attaching device is connected and fastened with the triangular upright standard section through a high-strength bolt, the wall attaching device is connected and fastened with the top end upright through a high-strength bolt, and the wall attaching device is connected with a building wall body or a floor slab through an expansion bolt;
furthermore, the driving and controlling system comprises driving equipment and electric control equipment, the electric control equipment comprises a power supply and a control unit, and the power supply is simultaneously connected with the driving equipment and the vertical limiting device through the control unit;
furthermore, the driving device comprises a driver, a gear driving group and a guide wheel group driver, the driver is meshed with the rack on the standard joint of the triangular upright post through the gear driving group and the guide wheel group driver, the driver is provided with two speed reducing motors with braking and a set of safety falling protector, the two speed reducing motors with braking are both provided with self-braking devices, the self-braking devices are connected with the triangular upright post, and the safety falling protector is connected with an electric control device;
further, the double-working-surface guide frame climbing type working platform system comprises a single-column attached system and a double-column attached system, wherein the single-column attached system is a single working platform, the double-column attached system is formed by arranging two working platforms in parallel, and the two working platforms are fixedly connected through a telescopic platform or a double-layer working platform;
the utility model has the advantages as follows:
1) the utility model solves a plurality of technical problems and limitations of the construction of the lifting scaffold;
2) the utility model solves the problem that the construction of the lifting scaffold is used for the assembly type building which can not stop and lean against immediately;
3) the utility model solves the limitation that the construction of the lifting scaffold can not be combined into one for main body construction and exterior decoration construction;
4) the utility model solves the limitation problem that the construction range of the general attached electric construction platform can not be operated in multiple layers;
5) the utility model provides an in the assembly type structure construction, attach the wall hole and set up too much problem.
Drawings
FIG. 1 is a schematic structural view of the working platform of the present invention;
FIG. 2 is a schematic view of the working platform of the present invention during construction close to a wall;
FIG. 3 is a top view of the working platform of the present invention;
fig. 4 is the schematic structural diagram of the double-column attached working platform of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in order to provide a better understanding of the present invention to the public, certain specific details are set forth in the following detailed description of the invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details.
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the present invention. The following are the best embodiments of the present invention:
the utility model provides a formula work platform and system climb are led to two working faces, the system can be single post attached system, also can be double-column attached system. As shown in fig. 1, the single-column type is shown, and the double-column type is shown in fig. 2.
Work platform is an electromechanical control, leans on rack and pinion transmission, with double-deck work platform manned, carry the thing along adhering to the stand on building structure and go up and down to realize the automatically controlled lift scaffold equipment of construction operation. The working platform has simple structure and convenient installation; the anti-falling is sensitive, safe and reliable; the whole framework of the platform is reasonable in stress, and the risk of deformation caused by unbalanced stress in the lifting process of the construction platform can be reduced. The method is suitable for construction of building engineering, in particular to construction operation of assembly type building construction, decoration of the outer vertical surface of the building, decoration and the like.
The construction platform comprises a support guide pillar system, an operation system, a protection system and a drive control system, wherein the support guide pillar system comprises a base 1 and a ladder stand 13; a triangular upright standard section 5, a wall attaching device 11 and a top upright 6; the operation system comprises a double-layer operation platform 3, a telescopic platform 10, a telescopic rod 9 and a connecting piece 8; the protection system comprises a vertical column frame 4 and a protection net rack 7; the driving and controlling system comprises a driving device and an electric control device.
The triangular upright post 5 is vertically arranged on the base 1 and is connected with a building through a wall attaching device 11 to form a guide pillar for vertical lifting of the double-layer electric construction platform; double-deck work platform 3, stand frame 4, protection rack 7, 12 pass through connecting piece 8, connect into whole framework, under the drive of driver 2, realize the whole lift of construction platform.
The triangular upright post is formed by combining triangular upright post standard sections 5 with racks, and comprises a top end upright post 6 and a wall attaching device 11. The wall attaching devices 11 are connected with the triangular upright standard sections 5 at intervals through high-strength bolts to form an integral framework and are attached to the wall body of a building; the triangular upright standard sections 5 are connected with the top upright 6 by high-strength bolts; the wall-attached upright column system provides a stable and reliable guide and lifting operation support column for the attached double-layer electric construction platform, and the top upright column 6 has the function of limiting the ascending position.
The base 1 is placed on the basic plane, and the height is set up according to the standard knot 5 of the triangular upright post, and the adjustable supporting legs on the telescopic base 1 provide stable support and bearing capacity. The base 1 is adjusted to be horizontal through adjustable supporting legs, and vertical stress of a construction platform is borne through strong supporting legs; the ladder stand 13 enables ground workers to enter the construction platform; the rack is welded on the triangular upright standard section 5, and the triangular upright standard section is directly butted and fastened to form a construction platform rack guide cylinder; the wall attaching devices 11 are arranged at intervals of 6m and are connected with the triangular upright standard sections 5 and the top upright 6 through high-strength bolts and expansion bolts to the building wall or floor slab. The triangular upright posts are erected to the top, the top end upright posts 6 are installed, and the vertical limiting devices and the top end upright post racks are installed on the top end upright posts 6.
Protection rack 7 not only plays the safety protection effect to safe construction, and more important effect is protection rack 7 support body, through 8 high-strength bolts of connecting piece to double-deck work platform 3, stand frame 4 fastening connection, form whole system of bearing, satisfy under the design loading effect, construction platform has sufficient ability and bears, antitorque, bending resistance, resistance to deformation, make construction platform have stable structure, safety and stability, reliable operation, guarantee construction operation and operation personnel's safety.
The double-layer operation platform 3, the upright post frame 4 and the protective net rack 7 are connected through bolts by the connecting piece 8 to form a frame structure, so that a stable framework under the load action is formed; the telescopic platform 10 and the telescopic rod 9 widen the working platform and adapt to the requirements of a working site; the double-layer operation platform 3 provides a mounting and positioning sleeve for the telescopic rod 9. The protective net rack 7 forms a framework with bending resistance, torsion resistance and deformation resistance with the double-layer operation platform 3 and the upright post frame 4 through the connecting piece 8.
The driving equipment comprises a driver 2, a motor speed reducer, a gear transmission, a safety anti-falling device, a lifting limiting device, an in-out safety door device, an electric control limiting device and an electric cabinet, wherein the motor speed reducer, the gear transmission, the safety anti-falling device, the lifting limiting device, the in-out safety door device, the electric control limiting device and the electric cabinet are all arranged on the driver 2; driver 2 and operating system and protection system are through high strength round pin hub connection, realize and set up the operation platform and the whole operation that goes up and down of protection system, simultaneously, set up the operation platform levelling device on the driver 2, realize the operation platform horizontal lift operation.
When the driver 2 runs to the top position, the travel switch can give a signal to the electric control system after contacting with the vertical limiting device, and the main power supply is automatically cut off; and the rack of the upright column at the top end is only half of the height of the upright column, so that the function of preventing the roof fall of the driver is realized if the travel switch fails. The base 1 is provided with a ladder 13 which is opposite to the position of the safety door on the driver 2, so that ground workers can enter the construction platform;
the driver 2 is meshed with the rack of the standard section 5 of the triangular upright column through the gear driving group and the guide wheel group driver, and the guide wheels of the 15 groups are limited and guided on the triangular upright column, so that the construction platform is stable and smooth in lifting operation and balanced in stress.
An intelligent horizontal synchronous control system is arranged on the drivers 2 and consists of a working platform horizontal limiting and surpassing leveling limiting control device, as shown in a double-column attached double-layer electric construction platform in the figure 2, when the synchronicity of the two drivers 2 is different, the working platform horizontal limiting device is started, the synchronicity of the driving device is automatically compensated, and the level of the working platform is adjusted; once the level of the working platform exceeds a specified value, the exceeding leveling limit switch is started, a power supply is cut off, and the horizontal lifting and stable operation of the working platform are effectively guaranteed.
The driver 2 is provided with two motors with braking planetary speed reducers, when the construction platform ascends and descends, the two motors work simultaneously, when one has problems, the other can independently complete the lifting function, and double-layer safety is provided for the construction platform; the motor with brake is provided with a self-braking device, and the driver 2 can be clamped on the triangular upright standard knot 5 when power is off. When the construction platform loses power supply at the high-altitude position, the emergency descending device on the driver 2 is a manual device, and the indoor construction platform can safely return to the ground through manual descending.
The driver 2 is provided with a set of safety falling protector, when the construction platform falls unrestrained in accident, the falling protector can detect falling overspeed, when the falling overspeed exceeds the design limit, the falling protector is opened and effectively prevents the construction platform from continuously falling downwards, and meanwhile, the falling prevention limit switch is started to cut off the power supply.
The driver 2 is provided with intelligent control of highest automatic limit, lowest automatic limit and overrunning emergency limit of the operation of the construction platform. When the construction platform rises to the highest erection position, the construction platform automatically stops rising operation and only allows falling operation; when the construction platform descends to the lowest position, the construction platform automatically stops descending operation and only allows ascending operation and descending operation; when the construction platform exceeds the emergency limit switch once at the highest or lowest position, the emergency limit switch is started, and then the power supply is cut off; the intelligent electric control devices realize multiple safety protection effects on the operation of the construction platform.
The driver 2 is provided with an electric control safety door for the access of constructors and the loading and unloading of goods. Set up limit switch on the emergency exit, if the emergency exit does not reliably close, construction platform is in the outage state, ensures construction operation safety and constructor life safety.
The invention has an upper and lower two-layer working platform, which is composed of a double-layer working platform 3, an upright post frame 4, a protective net rack 7, a telescopic platform 10 and a telescopic rod 9, which are fastened and connected by a high-strength bolt through a connecting piece 8 to form a construction operating platform frame body, so as to carry people and goods and carry construction operation, and the construction platform has enough capacity of resisting torque and bending moment under the bearing condition.
The upright post frames 4 are horizontally arranged at intervals of 2m or 1.5m according to different single-column and double-column erection construction schemes, the height of the upper layer and the lower layer is 2500mm, the width is 720mm, and a 720-wide operation platform is formed; set up 9 location connecting device of telescopic link on the double-deck work platform 3 for install telescopic link 9, lay the scaffold board on the installation of telescopic link 9, form telescopic platform, provide operation platform for constructor construction operation. According to the construction scheme and the distance from the construction platform to the wall body of the building, the telescopic rod 9 with the proper length is selected, and the width and the range of the operation platform are widened so as to meet different requirements of building construction. The telescopic platform has enough capacity to bear the design load in the overhanging state.
The utility model has the advantages of simple structure, installation are swift, easy and simple to handle, prevent weighing down sensitivity, safe and reliable, energy-efficient, construction cost low grade, comply with the development of building industry, especially the forward position product of assembly type building development demand.
The above-mentioned embodiments are only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The double-operation-surface guide frame climbing type working platform is characterized by comprising a supporting guide column system, an operating system, a protection system and a driving and controlling system, wherein the supporting guide column system comprises a base, a triangular upright column, a wall attaching device and a top end upright column, the triangular upright column is vertically installed on the base, the triangular upright column is connected with a building through the wall attaching device, the operating system is fixedly connected to the middle section of the triangular upright column, the top end upright column is located above the operating system, the driving and controlling system is located below the operating system, and the protection system is arranged on the periphery of the operating system.
2. The work platform of claim 1, wherein the protective system comprises a column frame and a protective grid disposed within each planar frame of the column frame, the work system being disposed within the column frame.
3. The work platform of claim 2, wherein the work system comprises a double-layer work platform, a telescopic rod and a connecting piece, the upright frame and the protective net rack are connected through bolts to form a frame structure, a stable framework under the action of load is formed, the telescopic platform is connected with the double-layer work platform through the telescopic rod, and the double-layer work platform provides a mounting sleeve and a positioning sleeve for the telescopic rod.
4. The work platform according to claim 1, wherein the triangular column is formed by stacking a plurality of triangular column sections with racks, the wall attaching devices are connected with the triangular column sections at fixed intervals through high-strength bolts, and the triangular column sections are connected through the high-strength bolts.
5. The work platform according to claim 4, wherein the triangular column section is connected with the top column through a high-strength bolt, the top column is arranged at the top of the triangular column, a vertical limiting device and a top column rack are arranged on the top column, and the top column rack is fixed in the middle of the top column.
6. The work platform according to claim 1, wherein the base is further provided with a telescopic device and an adjustable leg on two sides, the telescopic device is connected with the ground through the adjustable leg, a strong leg is arranged below the base, and the base is connected with the ground through the strong leg and the adjustable leg.
7. The work platform as claimed in claim 1, wherein the wall-attached device is connected and fastened with the triangular column sections through high-strength bolts, the wall-attached device is connected and fastened with the top end columns through high-strength bolts, and the wall-attached device is connected with the building wall body or the floor slab through expansion bolts.
8. The work platform of claim 5, wherein the drive and control system comprises a drive device and an electronic control device, the electronic control device comprises a power supply and a control unit, and the power supply is connected with the drive device and the vertical limiting device through the control unit.
9. The work platform according to claim 8, wherein the driving device comprises a driver, a gear driving set and a guide wheel set driver, the driver is engaged with the rack on the triangular upright post section through the gear driving set and the guide wheel set driver, the driver is provided with two speed reducing motors with braking and a set of safety catch, the two speed reducing motors with braking are respectively provided with a self-braking device, the self-braking devices are connected with the triangular upright post, and the safety catch is connected with an electric control device.
10. A double-working-surface guide frame climbing type working platform system, which is based on the working platform of any one of claims 1 to 9, and is characterized in that the system comprises a single-column attached system and a double-column attached system, the single-column attached system is a single working platform, the double-column attached system is two working platforms which are arranged in parallel, and the two working platforms are fixedly connected through a telescopic platform or a double-layer working platform.
CN201921226325.6U 2019-07-31 2019-07-31 Double-working-surface guide frame climbing type working platform and system Active CN211524016U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921226325.6U CN211524016U (en) 2019-07-31 2019-07-31 Double-working-surface guide frame climbing type working platform and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921226325.6U CN211524016U (en) 2019-07-31 2019-07-31 Double-working-surface guide frame climbing type working platform and system

Publications (1)

Publication Number Publication Date
CN211524016U true CN211524016U (en) 2020-09-18

Family

ID=72439123

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921226325.6U Active CN211524016U (en) 2019-07-31 2019-07-31 Double-working-surface guide frame climbing type working platform and system

Country Status (1)

Country Link
CN (1) CN211524016U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112357826A (en) * 2020-10-26 2021-02-12 高空机械工程技术研究院有限公司 Movable lifting platform
CN112376881A (en) * 2020-11-17 2021-02-19 浙江铠甲建筑科技有限公司 Climbing formula scaffold frame support increases subassembly
CN112942797A (en) * 2021-02-01 2021-06-11 上海金茂建筑装饰有限公司 Construction platform installation method
CN114592677A (en) * 2022-04-01 2022-06-07 吉林省光源建筑工程有限公司 Tool type scaffold anti-falling system
CN115341749A (en) * 2022-08-31 2022-11-15 中建三局科创产业发展有限公司 Double-layer multifunctional combined guide frame climbing type working platform

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112357826A (en) * 2020-10-26 2021-02-12 高空机械工程技术研究院有限公司 Movable lifting platform
CN112376881A (en) * 2020-11-17 2021-02-19 浙江铠甲建筑科技有限公司 Climbing formula scaffold frame support increases subassembly
CN112942797A (en) * 2021-02-01 2021-06-11 上海金茂建筑装饰有限公司 Construction platform installation method
CN114592677A (en) * 2022-04-01 2022-06-07 吉林省光源建筑工程有限公司 Tool type scaffold anti-falling system
CN114592677B (en) * 2022-04-01 2024-04-02 安徽道元建筑科技有限公司 Tool type scaffold anti-falling system
CN115341749A (en) * 2022-08-31 2022-11-15 中建三局科创产业发展有限公司 Double-layer multifunctional combined guide frame climbing type working platform

Similar Documents

Publication Publication Date Title
CN211524016U (en) Double-working-surface guide frame climbing type working platform and system
CN208518310U (en) All steel type attachment type raise scaffold
CN102180394B (en) Integrated building-block-type lift of strip steel structure
CN107419894A (en) Adhesion type lifting type aluminium alloy scaffold
CN112031387A (en) Electric construction platform system of attached type portal bridge device
CN114150857B (en) Construction method of attached type automatic climbing elevator shaft safety protection platform
CN114232970B (en) Method for installing super high-rise self-elevating attached overhanging type interlayer material transfer platform
CN202099993U (en) Lift type external scaffold made of square steel pipes
CN111236613A (en) Protection platform for building construction and use method thereof
CN115627916A (en) Lifting scaffold for building construction
CN213418443U (en) Self-climbing type elevator shaft operation platform
CN102287045B (en) Square steel tube lifting outside scaffold
CN216076228U (en) Rail mounted hanging flower basket support device
CN214195484U (en) All-steel attached lifting scaffold
CN110565937A (en) Door type integral lifting steel platform
CN110185247A (en) Mobile outrigger platform
CN209145256U (en) The dedicated climbing frame of assembled architecture
CN202544379U (en) Automatic climbing device
CN210735910U (en) Self-lifting hoisting equipment suitable for assembly type additional elevator construction
CN202441045U (en) Rail-type electric attached lifting scaffold
CN101701492A (en) Guide rail frame type adhering lifting scaffold
CN113443535B (en) Down extending type lifting equipment for well construction and mounting method thereof
CN206720680U (en) A kind of roofing color corrugated sheet steel lifting device
CN204754150U (en) Dish -type node formula scaffold
CN210886924U (en) Maintenance platform in retractable double-cable-plane cable-stayed bridge tower stay cable area

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant