CN210888940U - Temporary auxiliary work hanging scaffold for construction of deep and large vertical shaft and working platform system - Google Patents
Temporary auxiliary work hanging scaffold for construction of deep and large vertical shaft and working platform system Download PDFInfo
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- CN210888940U CN210888940U CN201921706682.2U CN201921706682U CN210888940U CN 210888940 U CN210888940 U CN 210888940U CN 201921706682 U CN201921706682 U CN 201921706682U CN 210888940 U CN210888940 U CN 210888940U
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 114
- 239000010959 steel Substances 0.000 claims abstract description 114
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000012372 quality testing Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000009434 installation Methods 0.000 description 8
- 238000007599 discharging Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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Abstract
The utility model discloses a temporary auxiliary working hanging scaffold for construction of a deep and large vertical shaft, which is arranged in the deep and large vertical shaft, is positioned below a working disc and is detachably connected with the working disc; the method comprises the following steps: the main beam consists of four steel beams which are horizontally arranged, and the steel beams are vertically and horizontally crossed and arranged in a shape like a Chinese character 'jing'; the lengths of the four steel beams are consistent and are all smaller than the diameter of the vertical shaft; the auxiliary beam is annular and is detachably connected end to end by a plurality of arc sections; the steel beam surrounds the outer side of the main beam for one circle and is detachably connected with the end part of the corresponding steel beam; the steel plate on the top surface of the platform is circular and is formed by assembling a plurality of fan-shaped steel plates; the auxiliary beam is arranged on the upper parts of the main beam and the auxiliary beam and is detachably connected with the main beam. The problem of the narrow work platform of operation such as shaft wall of a well is torn open and is traded, wall of a well is maintained, wall of a well quality testing, better for the operation personnel provide one be spacious safe operation platform again. By utilizing the platform for operation, not only is the construction safety guaranteed, but also the dismounting and the mounting are simple, and the mounting is convenient to use and mount at any time.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of the tunnel construction, especially, relate to a supplementary work platform sling and work platform system temporarily of dark big shaft construction.
[ background of the invention ]
In the construction process of the domestic deep and large vertical shaft at present, the vertical shaft is a vertical structure, and the safe and smooth expansion operation can be realized only by taking a hanging scaffold in the shaft as a working platform for shaft wall replacement, shaft wall finishing and shaft wall quality detection within the shaft range. Facilities such as a water pump, a water collecting tank, a grab machine host, a signal operation console, a bell mouth and the like are arranged on the hanging scaffold in the shaft, so that a small surplus space exists, the bell mouth needs to be sealed, the grab machine host and the signal operation console can be moved to vacate an operation space, the workload is large, and the consumed time is long.
[ Utility model ] content
The utility model aims at providing a supplementary work platform sling for the construction of dark big shaft has solved the shaft wall of a well and has torn open the narrow problem of work platform of operations such as trade, the wall of a well is maintained, wall of a well quality detects, and better provides one for the operation personnel and is spacious safe operation platform again promptly. By utilizing the platform for operation, not only is the construction safety guaranteed, but also the dismounting and the mounting are simple, and the mounting is convenient to use and mount at any time.
The utility model adopts the following technical scheme: a temporary auxiliary working hanging scaffold for construction of a deep and large vertical shaft is arranged in the deep and large vertical shaft, is positioned below a working scaffold and is detachably connected with the working scaffold; the method comprises the following steps: the main beam consists of four steel beams which are horizontally arranged, and the steel beams are vertically and horizontally crossed and arranged in a shape like a Chinese character 'jing'; the lengths of the four steel beams are consistent and are all smaller than the diameter of the vertical shaft; the auxiliary beam is annular and is detachably connected end to end by a plurality of arc sections; the steel beam surrounds the outer side of the main beam for one circle and is detachably connected with the end part of the corresponding steel beam; the steel plate on the top surface of the platform is circular and is formed by assembling a plurality of fan-shaped steel plates; the auxiliary beam is arranged on the upper parts of the main beam and the auxiliary beam and is detachably connected with the main beam.
Furthermore, a plurality of vertical steel wire ropes are arranged around the steel plate on the top surface of the platform at intervals and are detachably connected with the working disc.
Furthermore, the arc sections forming the auxiliary beams and the end parts of the steel beams and the auxiliary beams are detachably connected through bolts.
Furthermore, the criss-cross steel beams forming the main beam are connected through vertical bolts.
Further, when the depth of the vertical shaft is 50m and the thickness of the well wall template is 45cm, the main beam is made of 20# I-steel, the auxiliary beam is formed by processing 20# channel steel into a ring, the steel plate on the top surface of the platform is a steel plate with the diameter of delta 12mm, and the specification of the steel wire rope is phi 20.
The utility model discloses a deep and large shaft construction work platform system, which comprises the deep and large shaft construction temporary auxiliary work hanging scaffold, and also comprises a work tray which is positioned above the auxiliary work hanging scaffold and in the deep and large shaft, wherein the work tray comprises an upper layer work table, a middle layer work table and a lower layer work table which are horizontally arranged at intervals from top to bottom, and all the work tables are connected through a steel wire rope; each workbench is used for bearing and placing instruments;
the left side and the right side on each workbench are respectively provided with a through hole which is communicated with each other from top to bottom, the positions of the through holes on the same side are corresponding, and the through holes are respectively a main lifting bell mouth and an auxiliary lifting bell mouth and are channels for up-and-down transportation.
The use method of the temporary auxiliary working hanging scaffold for deep and large shaft construction or the working platform system for deep and large shaft construction comprises the following steps:
the assembled lower-layer workbench, the middle-layer workbench and the upper-layer workbench are sequentially connected together at intervals through steel wire ropes, the lower-layer workbench is hoisted into a vertical shaft by a crane, then the middle-layer workbench and the upper-layer workbench are hoisted, a stand column is arranged between the middle-layer workbench and each layer of workbench, and a main lifting bell mouth and an auxiliary lifting bell mouth are installed; constructing;
the assembled main beam, the auxiliary beam, the platform top surface steel plate and the steel wire rope are placed to the barrel bottom through the main lifting bell mouths and the auxiliary lifting bell mouths, the main beam and the auxiliary beam are assembled together at the barrel bottom, then the platform top surface steel plate is placed and fixed, and the assembled main beam, the auxiliary beam, the platform top surface steel plate and the steel wire rope are connected with the lower-layer workbench through the vertical steel wire rope.
The utility model has the advantages that: (1) the temporary auxiliary work hanging scaffold is low in cost, simple in assembling process and high in practicability.
(2) The installation consumes short time, saves the time of facility removal on the working plate.
(3) The temporary auxiliary working hanging scaffold has wide operation space and can meet the requirements of stacking templates and appliances and operating simultaneously.
(4) The steel wire ropes are connected up and down, and after detection and calculation, the safety coefficient is far greater than the standard requirement, so that the safety is higher.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of the temporary auxiliary working hanging scaffold for the construction of the deep and large vertical shaft of the utility model.
Fig. 2 is a schematic structural diagram of a working platform system for construction of a deep large vertical shaft;
wherein: 1. a main beam; 2. an auxiliary beam; 3. a bolt; 4 nodes; 6. a wire rope; 7. a lower stage; 8. a middle layer worktable; 9. an upper stage; 10. a column; 11. a main lifting bell mouth; 12. an auxiliary lifting bell mouth; 13. a hanging scaffold and a stable rope hanging point; 14. and a steel plate on the top surface of the platform.
[ detailed description ] embodiments
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The embodiment of the utility model discloses a temporary auxiliary working hanging scaffold for construction of a deep and large vertical shaft, which is arranged in the deep and large vertical shaft, is positioned below a working plate and is detachably connected with the working plate as shown in figure 1; the method comprises the following steps: the main beam 1 is composed of four steel beams which are horizontally arranged, and the steel beams are vertically and horizontally crossed and arranged in a shape like a Chinese character 'jing'; the lengths of the four steel beams are consistent and are all smaller than the diameter of the vertical shaft; the auxiliary beam 2 is annular and is detachably connected end to end by a plurality of arc-shaped sections; the steel beam surrounds the outer side of the main beam 1 for one circle and is detachably connected with the end part of the corresponding steel beam; the platform top surface steel plate 14 is circular and is formed by assembling a plurality of fan-shaped steel plates; the auxiliary beam is arranged on the upper parts of the main beam 1 and the auxiliary beam 2 and is detachably connected with the main beam 1. The main beam 1 and the auxiliary beam 2 are all arranged as detachable and assembled components, when in use, all the components are hung in a vertical shaft and assembled at the bottom of the shaft, and a working disc does not need to be detached, so that the construction time is saved; at the same time, it is not necessary to rebuild the carrier. After the components are assembled, the steel plate 14 on the top surface of the platform is a large operation platform, so that the construction of workers is facilitated, and the safety of the workers can be ensured.
A plurality of vertical steel wire ropes 6 are arranged around the steel plate 14 on the top surface of the platform at intervals and are detachably connected with the working disc. The arc sections of the auxiliary beams 2 are formed, and the end parts of the steel beams are detachably connected with the auxiliary beams 2 through bolts. The criss-cross steel beams forming the main beam 1 are connected through the nodes 4. The node 4 selects a bolt in the vertical direction.
When the depth of a vertical shaft is 50m and the thickness of a well wall template is 45cm, the main beam 1 is made of 20# I-steel, the auxiliary beam 2 is formed by processing 20# channel steel into a ring, the steel plate 14 on the top surface of the platform is a steel plate with the diameter of delta 12mm, and the specification of the steel wire rope 6 is phi 20.
A deep large shaft construction work platform system is shown in figure 2, and comprises the temporary auxiliary work hanging scaffold for the deep large shaft construction, and further comprises a work tray which is positioned above the auxiliary work hanging scaffold and in a deep large shaft, wherein the work tray comprises an upper layer work table 9, a middle layer work table 8 and a lower layer work table 7 which are horizontally arranged at intervals up and down, and all the work tables are connected through steel wire ropes; each workbench is used for bearing and placing instruments; the left side and the right side of each workbench are respectively provided with a through hole which is communicated with each other from top to bottom, the positions of the through holes on the same side are corresponding, and the through holes are respectively a main lifting bell mouth 11 and an auxiliary lifting bell mouth 12 which are channels for up-and-down transportation.
The use method of the temporary auxiliary working hanging scaffold for deep and large shaft construction or the working platform system for deep and large shaft construction comprises the following steps:
the assembled lower-layer workbench 7, the middle-layer workbench 8 and the upper-layer workbench 9 are sequentially connected together at intervals through steel wire ropes, the lower-layer workbench 7 is hoisted into a shaft by a crane, then the middle-layer workbench 8 and the upper-layer workbench 9 are hoisted, a stand column 10 is arranged between the workbench 8 of each layer, and a main lifting bell mouth 11 and an auxiliary lifting bell mouth 12 are installed; and (5) construction. The assembled main beam 1, the auxiliary beam 2, the platform top surface steel plate 14 and the steel wire rope 6 are placed to the bottom of the cylinder through the main lifting bell mouths 2 and the auxiliary lifting bell mouths 6, the main beam 1 and the auxiliary beam 2 are assembled together at the bottom of the cylinder, then the platform top surface steel plate 14 is placed and fixed, and the assembled main beam 1, the auxiliary beam 2, the platform top surface steel plate 14 and the steel wire rope are connected with the lower-layer workbench 7 through the vertical steel wire rope 6. One end of the steel wire rope 6 is connected with the hanging scaffold and the stable rope hanging point 13.
Before the auxiliary working hanging scaffold is installed, firstly processing each component of the hanging scaffold, and finally lowering the hanging scaffold to a shaft bottom working surface for installation, wherein the operation steps are as follows:
assembling a temporary auxiliary working hanging scaffold for construction of the deep and large vertical shaft on the ground, and rechecking whether the size meets the requirements of site construction;
the auxiliary working hanging scaffold steel beam is processed by I16, the theoretical weight of I16 is 20.513kg/m, and the total weight of the steel beam of the working scaffold is calculated according to a drawing: 370 kg. The thickness of the steel plate used is 8mm, and the theoretical weight of the 8mm steel plate is 62.8kg/m2Calculated, the theoretical weight of 790 kg.20 # channel steel is 25.77Kg/m, so the total weight of the channel steel is 470 kg., the weight of the materials stacked on the steel plate 14 on the top surface of the platform, the weight of the tools and the tools is 1500 kg., 10 constructors on the steel plate 14 on the top surface of the platform weigh 80Kg, 6 steel wire ropes 6 with the models of 6 × 37-20-1670 are used as suspension steel wire ropes of the auxiliary working hanging disc in total 800 kg., the breaking tension of a single steel wire rope 6 is 22T, and the safety coefficient is calculated as follows:
the safety coefficient is 22 × 6/0.37+0.79+0.47+1.5+0.8 ═ 33.58 > 13, and the underground use requirement is met.
After checking and calculating, the temporary auxiliary working hanging scaffold for deep and large shaft construction is disassembled, all accessories are placed to a shaft bottom working surface for assembly, after the auxiliary working hanging scaffold is assembled, the steel beam of the temporary auxiliary working hanging scaffold and the steel beam of the working scaffold are connected together by using a steel wire rope 6, and the upper end and the lower end of the steel wire rope 6 are respectively fixed by using shoe-shaped clamps and are provided with safety bends. And lifting and operating after the installation.
The site construction conditions are as follows:
the whole length of a certain section of tunnel is 34.538km, and the tunnel is provided with an auxiliary gallery of 'one horizontal tunnel, one inclined tunnel and two vertical tunnels'. The number 1 vertical shaft adopts a main and auxiliary shaft arrangement mode, the main shaft is positioned at the position 30m on the right side of the midline of a D1K205+080 line of the tunnel, the shaft depth is 762.59m, and the inner diameter is 6.0 m; the auxiliary well is positioned at 52m on the left side of the tunnel D1K205+053, the well depth is 764.74m, and the inner diameter is 5.0 m. The main shaft of the vertical shaft is used for discharging slag and discharging sewage after being built, and the auxiliary shaft is used for feeding, fresh air feeding, water discharging, personnel entering and exiting and also used as a safe outlet after being built.
The engineering is carried out on the ground in 2016, the main well is checked and accepted through the start condition in 2016, the main well is checked and accepted in 2016, 6-20 days, the auxiliary well is checked and accepted in 2016, 7-17 days, and the main well is dug and laid by 730.9m and the auxiliary well is dug and laid by 634.2m after 6 months in 2019.
And on 15 days in 1 month in 2018, digging and building the auxiliary shaft S1ZK0+ 626.7- +630.3 section, after the tunneling blasting is finished, the wall part of the shaft in the mucking process appears a rib, the left side wall of the shaft appears water burst, the water level rises quickly, and the actually measured water burst amount is about 300m 3/h. And 4, in 2018, 30 days in month 4, and the water depth in the well is 626 m.
The working disc structure and the installation steps are as follows:
in order to meet the requirements of shaft construction, three layers of working platforms are arranged in a shaft of a tunnel 1# shaft main and auxiliary shafts, the diameters of the three layers of working platforms of the main shaft are 5700mm, and the diameters of the three layers of working platforms of the auxiliary shafts are 4800 mm. The main well three-layer workbench is composed of I32a steel beams and 32a steel channel beams, and the auxiliary well three-layer workbench is composed of I28a steel beams and 28a steel channel beams which are connected. The distance between the main well and the auxiliary well working tables is 4500mm, and one main horn and one auxiliary horn are correspondingly arranged on the left side and the right side of each layer of working table.
And (3) suspension steel wire rope type selection checking calculation:
the main and auxiliary well working disk is the heaviest of the single-layer working platform of the main well, and the steel wire rope buckle is selected according to the steel wire rope buckle of the working platform of the main well.
a. 8 steel wire ropes 6 × 37-18-1670 are selected to bind with middle level workstation in upper workstation, and single-deck workstation weight is 2T, and the weight that the steel wire rope knot binded the bearing includes middle level workstation, lower floor's workstation, stand and horn mouth, and total weight is about 5T, and the breaking tension of single strand wire rope is 16T, and the total breaking tension is 128 T.128T ÷ 5T ═ 25.6 > 6, satisfies the operation requirement.
b. The working table is hoisted, after the outer side of the well head is assembled, the working table is adjusted to the well head, 4 steel wire ropes 6 × 37-18-1670 are selected, the weight of a single-layer working table is 2T, the breaking tension of a single-strand steel wire rope is 16T, when the upper working table and the middle working table are hoisted, the weight is 4T, 16T × 4/4T is 16 & gt 6, the use requirement is met, when the lower working table is hoisted, the weight is 2T, 16T × 4/2T is 32 & gt 6, and the use requirement is met.
The installation scheme is as follows:
assembling the hanging scaffold in a well head space barrier-free section, namely assembling a lower-layer workbench 7, after the lower-layer workbench 7 is assembled, paving a plate on the lower-layer workbench, after the paving of the plate is finished, assembling a middle-layer workbench 8 beside the lower-layer workbench 7, after the assembling of the steel beam of the middle-layer workbench 8 is finished, paving the plate, then assembling an upper-layer workbench 9 on the middle-layer workbench 8, and after the assembling of the upper-layer workbench 9 is finished, paving the plate. And then the middle layer worktable 8 and the upper layer worktable 10 are bound together by a steel wire rope. The method comprises the following steps of laying a steel pipe on a shaft, hoisting a lower-layer hoisting disk on the shaft by using a crane, hoisting an upper-layer workbench and a middle-layer workbench on the shaft by using the crane, lifting the upper-layer workbench and the middle-layer workbench to a proper position by using a hoisting disk rope, installing a stand column between the middle-layer workbench and the lower-layer workbench, and installing a bell mouth of the lower-layer hoisting workbench. After the shaft is tried and dug, 30m is tried and dug, and the upright columns and the bell mouths of the middle-layer workbench and the upper-layer workbench are installed.
The installation method of the main and auxiliary well hanging scaffold is the same, so the installation method of the auxiliary well hanging scaffold is the same as the installation method.
And the auxiliary well is flooded by adopting the method of pouring modified cement grout to form a water stop pad and locally treating the burst by adopting a targeted grouting mode. After the water control is finished, the water stop pad needs to be broken, and in the process of breaking the water stop pad, the phenomenon of cracking caused by the influence of long-time soaking of accumulated water and targeted grouting on the well wall in the water stop pad area is found, and the stability is poor. The well wall in the water-stop pad area needs to be disassembled and replaced. The well wall is quickly and efficiently disassembled and replaced. And the temporary auxiliary working hanging scaffold is arranged below the working scaffold.
The implementation condition of the temporary auxiliary working hanging scaffold in the project is as follows:
the engineering needs to disassemble and replace the well wall of the vertical shaft, the depth is 50m, and the thickness of the well wall is 45 cm.
The implementation process comprises the steps of (1) processing a main beam 1, an auxiliary beam 2 and a platform top surface steel plate 14, (2) assembling on the ground after the processing is finished and checking whether the processing size meets the site construction requirement, (3) calculating the weight after all structural parts are processed, wherein the weight comprises the weight of the structural parts, the weight of materials stacked on a working disc and the weight of operators, and is used for detecting and selecting the specification and the number of suspension steel cables 6, (4) the main beam 1 is made of 20# I-steel, the auxiliary beam 2 is processed into a ring by the 20# channel steel and is connected by a phi 20 × 80mm bolt, the distance between the platform top surface steel plate 14 and a vertical cylinder template is 8cm, so that the templates are not scraped when the main beam is lifted upwards, the temporary auxiliary working hanging disc is connected with the working disc by 6 phi 20 steel cables, and a delta 12mm steel plate is paved on the working disc, (5) after the shaft wall is installed, placing a load which is about 2.5t heavy on the temporary auxiliary working hanging disc, then lifting and then, and after the operation trial run, (6) successfully, the temporary auxiliary working hanging disc is used for replacing.
3. The temporary auxiliary work hanging scaffold has the practical effects in the project:
the steel consumption of the temporary auxiliary working hanging scaffold is about 1t, the total investment of the steel beam containing I-steel, the steel plate paved by the platform and the connecting bolt is 6423 yuan, and the manufacturing cost is lower. The assembly time can be completed within 3.5 hours, and the cost and the time are greatly saved. The working hanging scaffold is used as a working platform, the well wall of the auxiliary well is disassembled and replaced at 11 and 6 in 2018, and the replacement is finished at 12 and 20 days in 2018, the common time is 28 days, so that the working efficiency is high.
Adopt the utility model provides a supplementary work platform sling in dark big shaft construction temporarily is under construction, has broken the shaft interim operation platform precedent in the pit. The temporary auxiliary working hanging scaffold is easy to process and assemble, low in cost, high in working efficiency and low in cost investment.
Claims (6)
1. A temporary auxiliary working hanging scaffold for construction of a deep and large vertical shaft is characterized by being arranged in the deep and large vertical shaft, positioned below a working disc and detachably connected with the working disc; the method comprises the following steps:
the main beam (1) consists of four steel beams which are horizontally arranged, and the steel beams are vertically and horizontally crossed and arranged in a shape like a Chinese character 'jing'; the lengths of the four steel beams are consistent and are all smaller than the diameter of the vertical shaft;
the auxiliary beam (2) is annular and is formed by detachably connecting a plurality of arc-shaped sections end to end; the main beam surrounds the outer side of the main beam (1) for one circle and is detachably connected with the end part of the corresponding steel beam;
the platform top surface steel plate (14) is circular and is formed by assembling a plurality of fan-shaped steel plates; the upper parts of the main beam (1) and the auxiliary beam (2) are detachably connected with the main beam (1).
2. A temporary auxiliary working platform for construction of a deep and large shaft according to claim 1, characterized in that a plurality of vertical steel cables (6) are arranged around the circumference of the steel plate (14) on the top surface of the platform at intervals for detachable connection with the working platform.
3. A temporary auxiliary work platform for construction of a deep and large shaft according to claim 1 or 2, characterized in that the arc sections constituting the auxiliary beams (2) and the end parts of the steel beams and the auxiliary beams (2) are detachably connected by bolts.
4. A temporary auxiliary working platform for construction of a deep and large shaft according to claim 3, characterized in that the criss-cross steel beams constituting the main beam (1) are connected by vertical bolts.
5. The temporary auxiliary working hanging scaffold for the construction of the deep and large vertical shaft is characterized in that when the depth of the vertical shaft is 50m and the thickness of a well wall template is 45cm, the main beam (1) is made of 20# I-steel, the auxiliary beam (2) is made of 20# channel steel, the steel plate (14) on the top surface of the platform is delta 12mm, and the steel wire rope (6) is phi 20 in specification.
6. A deep large shaft construction work platform system is characterized by comprising the temporary auxiliary work hanging scaffold for the deep large shaft construction as claimed in any one of claims 1 to 4, and further comprising a work tray which is positioned above the auxiliary work hanging scaffold and in the deep large shaft, wherein the work tray comprises an upper layer work table (9), a middle layer work table (8) and a lower layer work table (7) which are arranged horizontally at intervals up and down, and all the work tables are connected through steel wire ropes; each workbench is used for bearing and placing an instrument;
the left side and the right side of each workbench are respectively provided with a through hole which is communicated with each other from top to bottom, the positions of the through holes on the same side are corresponding, and the through holes are respectively a main lifting bell mouth (11) and an auxiliary lifting bell mouth (12) which are channels for up-and-down transportation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921706682.2U CN210888940U (en) | 2019-10-12 | 2019-10-12 | Temporary auxiliary work hanging scaffold for construction of deep and large vertical shaft and working platform system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921706682.2U CN210888940U (en) | 2019-10-12 | 2019-10-12 | Temporary auxiliary work hanging scaffold for construction of deep and large vertical shaft and working platform system |
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| CN210888940U true CN210888940U (en) | 2020-06-30 |
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| CN201921706682.2U Active CN210888940U (en) | 2019-10-12 | 2019-10-12 | Temporary auxiliary work hanging scaffold for construction of deep and large vertical shaft and working platform system |
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