CN110026823B - Modularized elevator shaft production line - Google Patents
Modularized elevator shaft production line Download PDFInfo
- Publication number
- CN110026823B CN110026823B CN201910277218.4A CN201910277218A CN110026823B CN 110026823 B CN110026823 B CN 110026823B CN 201910277218 A CN201910277218 A CN 201910277218A CN 110026823 B CN110026823 B CN 110026823B
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- assembly
- production line
- station
- positioning
- arm
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 44
- 238000003466 welding Methods 0.000 claims abstract description 39
- 238000005553 drilling Methods 0.000 claims abstract description 27
- 239000000178 monomer Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000003872 anastomosis Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q41/00—Combinations or associations of metal-working machines not directed to a particular result according to classes B21, B23, or B24
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention provides a modularized elevator shaft production line, which comprises a group welding station, and at least comprises a pretreatment station arranged at the front end of the group welding station and/or an accessory assembly station arranged at the rear end of the group welding station; the pretreatment station is provided with multi-axis drilling equipment which is used for drilling holes in the section bars to be assembled and welded; the assembly welding station is provided with an assembly welding production line which is used for assembling and welding the section bar processed by the pretreatment station and obtaining a plurality of modularized elevator hoistway monomers; the accessory assembly station is provided with the accessory assembly fixture, and the accessory assembly fixture is used for supporting the modularized elevator shaft single body so as to facilitate the assembly of accessories.
Description
[ field of technology ]
The invention relates to the technical field of elevator manufacturing, in particular to a modularized elevator shaft production line.
[ background Art ]
The elevator shaft is used as a special space for elevator installation and operation, and needs to meet the necessary conditions of elevator installation and operation, in particular to an elevator installed outside an original building in the later period, the construction of the on-site shaft before elevator installation occupies a large area, the construction time is long, and the long-time construction causes pollution to the environment and noise pollution to the life and work of surrounding masses. In order to shorten the site construction time, the modularized elevator shaft is completed in a factory by most procedures of traditional process site construction, and then a plurality of modularized elevator shaft monomers processed in the factory are transported to the site when site conditions are met, so that the hoisting and assembly of the elevator shaft are completed in a short time. At present, when the production of the modularized elevator shaft is carried out in a factory, a large number of independent production equipment and tools are generally adopted, a large number of workers are involved in coordination and cooperation production, a production mode of pipelining is not formed, the production efficiency is low, the precision of the produced modularized elevator shaft is difficult to guarantee, and the hoisting and assembly of the later modularized elevator shaft are affected.
The invention is researched and proposed for overcoming the defects of the prior art.
[ invention ]
The invention aims to overcome the defects existing in the prior art and provide a modularized elevator shaft production line.
In order to solve the technical problems, the invention adopts the following technical scheme: the modularized elevator shaft production line comprises a group welding station, and at least comprises a pretreatment station arranged at the front end of the group welding station and/or an accessory assembly station arranged at the rear end of the group welding station; the pretreatment station is provided with multi-axis drilling equipment which is used for drilling holes in the section bars to be assembled and welded; the assembly welding production line is used for assembling and welding the section bar processed by the pretreatment station and obtaining a plurality of modularized elevator shaft monomers; the accessory assembly station is provided with an accessory assembly tool, and the accessory assembly tool is used for supporting the modularized elevator hoistway monomer so as to facilitate assembly of accessories.
The assembly welding production line comprises a plurality of groups of parallel portal frames arranged in parallel along the transverse direction, the distance between two adjacent groups of portal frames is smaller than the length of a single modularized elevator shaft, and the length of the whole assembly welding production line is larger than the total length of the modularized elevator shaft; each group of portal frames comprises two symmetrically arranged struts, and each strut is provided with an upper supporting arm and a lower supporting arm for placing and positioning a modularized elevator shaft single body, and the upper supporting arms are movably or telescopically arranged on the struts.
According to the modularized elevator shaft production line, the upper supporting arm is sleeved on the supporting column, so that the upper supporting arm can rotate around the supporting column and can move up and down relative to the supporting column along the vertical direction, the upper supporting arm is further connected with the lifting driving mechanism for controlling the upper supporting arm to move up and down, and the lower supporting arm is fixedly installed on the supporting column along the longitudinal direction and is located on the inner side of the portal frame.
According to the modularized elevator shaft production line, the lower supporting arm is provided with the positioning assembly, and the jacking device is arranged beside the lower supporting arm. The lifting device can jack up the raw materials or the modularized elevator hoistway monomers positioned on the lower supporting arm, so that the materials can be conveniently transferred and conveyed in the assembly welding production line, and the automatic and large-scale production can be realized.
The modular elevator shaft production line comprises the positioning assembly, wherein the positioning assembly comprises a first positioning module and a second positioning module, the first positioning module is adjustably arranged on the upper surface of the lower supporting arm, the second positioning module comprises a base which is adjustably arranged on the upper surface of the lower supporting arm, a pushing block is movably arranged on the base, and an eccentric wheel which is abutted to the pushing block is further arranged on the base; the jacking device comprises a jacking bracket and a jacking driving mechanism, and a carrier roller is arranged on the jacking bracket. By adopting the method of integrally positioning and pressing and simultaneously assembling and welding the plurality of modularized elevator shaft monomers, the raw materials can be accurately assembled and welded into the modularized elevator shaft monomers with high anastomosis degree and straightness, so that the overall straightness of the elevator shaft is ensured, and the elevator shaft has the characteristic of high assembly and welding quality.
According to the modularized elevator shaft production line, the top parts of the two struts in each group of the portal frames are provided with the cross beams for connecting the two struts, the bottoms of the cross beams of the portal frames which are arranged in parallel along the transverse direction are provided with the tracks which penetrate through all the portal frames along the transverse direction, the tracks are provided with lifting equipment, the tracks extend outwards at the portal frames at the edge, the outwards extending distance of the tracks is larger than the length of the modularized elevator shaft, and the tail ends of the tracks are provided with the supporting portal frames after the tracks extend outwards. The modularized elevator hoistway monomer is transferred through the hoisting equipment arranged at the top of the portal frame, so that the operation is convenient and the working efficiency is high.
The modularized elevator shaft production line comprises a rack, wherein a feeding mechanism and a positioning mechanism are arranged on the rack, two sets of multi-shaft drilling units capable of performing feeding motion along the longitudinal direction are arranged on the feeding mechanism, the feeding directions of the two sets of multi-shaft drilling units are opposite, and a processing space for a processed material to enter is formed between the two sets of multi-shaft drilling units; the positioning mechanism comprises a vertical positioning unit and a longitudinal positioning unit, wherein the vertical positioning unit is arranged below the processing space, and the longitudinal positioning unit is arranged on two sides of the processing space.
According to the modularized elevator shaft production line, the blanking equipment is further arranged on the pretreatment station and used for cutting raw materials according to the required length and shape, and the cut materials are firstly sent to the multi-shaft drilling equipment for processing or directly sent to the assembly welding production line for assembly welding.
The modularized elevator shaft production line comprises an adjusting frame, wherein the adjusting frame comprises an underframe, a lifting guide pillar along the vertical direction is arranged on the underframe, a lifting assembly is connected onto the lifting guide pillar in a sliding manner, a lifting control mechanism is connected onto the lifting assembly, the lifting assembly comprises an intermediate shaft arranged along the horizontal direction, a rotating arm is rotatably connected onto the intermediate shaft, a limiting piece for limiting the rotation angle of the rotating arm is further arranged on the intermediate shaft, two sliding seats are connected onto the rotating arm in a sliding manner, and the two sliding seats are respectively arranged on two sides of the rotation center of the rotating arm. Through adopting the swinging boom to make the single both ends of modularization elevator well rotationally support on the alignment jig, the free height of placing of modularization elevator well is adjusted to the lifting subassembly and the lift operating mechanism on the accessible alignment jig simultaneously to make things convenient for in the follow-up course of working to overturn to the modularization elevator well monomer, need not occupy hoisting equipment resource for a long time, effectively reduced manufacturing cost and improved production efficiency.
The accessory assembly fixture comprises two sets of adjusting frames, the two sets of adjusting frames are symmetrically arranged at two ends of a modularized elevator shaft body respectively, and each set of adjusting frame is provided with two rotating arms.
Compared with the prior art, the invention has the following advantages: the invention realizes the production mode of flow production of procedures such as material pretreatment, modularized elevator shaft single body assembly welding, modularized elevator shaft single body accessory installation and the like of the modularized elevator shaft, improves the production efficiency, saves the production cost and strictly ensures the precision of products.
[ description of the drawings ]
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a perspective view of a welding line at a welding station in accordance with the present invention.
FIG. 2 is a side view of a welding line at a welding station in accordance with the present invention.
Fig. 3 is a perspective view of the gantry of fig. 1.
Fig. 4 is a front view of the gantry of fig. 1.
Fig. 5 is a schematic view of the lower support arm and positioning device of fig. 3.
Fig. 6 is a perspective view of an accessory mounting tool at an accessory mounting station in accordance with the present invention.
Fig. 7 is a perspective view of the adjustment bracket of fig. 6.
Fig. 8 is a side view of the adjustment bracket of fig. 6.
Fig. 9 is a perspective view of the multi-axis drilling apparatus at the pretreatment station of the present invention.
Fig. 10 is a perspective view ii of the multi-axis drilling apparatus at the pretreatment station of the present invention.
Fig. 11 is a schematic view of the multi-axis drill unit of fig. 9.
[ detailed description ] of the invention
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
The utility model provides a modularization elevator well production line, is including the assembly welding station, be equipped with assembly welding production line 2 on the assembly welding station, assembly welding production line 2 is used for will pass through the section bar equipment welding of pretreatment station processing obtains a plurality of modularization elevator well monomer 002. As shown in fig. 1 to 5, the assembly welding production line 2 includes a plurality of groups of parallel portal frames 4 along the transverse direction, and the distance between two adjacent groups of portal frames 4 is smaller than the length of the modularized elevator shaft single body 002; each group of portal frames 4 comprises two supporting columns 41 which are symmetrically arranged, the top parts of the two supporting columns 41 are provided with cross beams 25 for connecting the two supporting columns 41, the bottoms of the cross beams 25 of the portal frames 4 which are arranged in parallel along the transverse direction are provided with rails 26 which penetrate through all the portal frames 4 along the transverse direction, the rails 26 are provided with lifting equipment 27, the rails 26 extend outwards at the portal frames 4 at the edge, the outwards extending distance of the rails 26 is larger than the length of a modularized elevator hoistway monomer 002, and the tail ends of the rails 26 are provided with supporting rails 28 after the outwards extending. Each of the posts 41 is provided with an upper support arm 421 and a lower support arm 422 for placing and positioning the modular hoistway cell 002; the lower support arm 422 is fixedly installed on the column 41 in the longitudinal direction and located inside the gantry 4; the upper support arm 421 is sleeved on the pillar 41, so that the upper support arm 421 can rotate around the pillar 41 and can move up and down relative to the pillar 41 along the vertical direction, and the upper support arm 421 is also connected with a lifting driving mechanism 423 for controlling the upper and lower movement of the upper support arm 421; the preferred lower support arm 422 is provided with a positioning assembly 43, the positioning assembly 43 comprises a first positioning module 431 and a second positioning module 432, the first positioning module 431 is adjustably mounted on the upper surface of the lower support arm 422, the second positioning module 432 comprises a base 4321 adjustably mounted on the upper surface of the lower support arm 422, a pushing block 4322 is movably arranged on the base 4321, and an eccentric wheel 4323 abutted against the pushing block 4322 is also arranged on the base 4321; the lower support arm 122 is further provided with a jacking device 44, the jacking device 44 comprises a jacking bracket 441 and a jacking driving mechanism 442, and the jacking bracket 441 is provided with a carrier roller 443.
Preferably, an auxiliary supporting frame 29 is arranged between every two adjacent groups of portal frames 4, the height of the auxiliary supporting frame 29 is consistent with that of the lower supporting arm 422, and a positioning component 43 is also arranged on the auxiliary supporting frame 29.
Preferably, a pretreatment station is arranged at the front end of the assembly welding station, a multi-axis drilling device 1 is arranged on the pretreatment station, and the multi-axis drilling device 1 is used for drilling holes in the section bars to be assembled and welded. As shown in fig. 9 to 11, the multi-axis drilling apparatus 1 includes a frame 11, a feeding mechanism 12 and a positioning mechanism 13 are disposed on the frame 11, two sets of multi-axis drilling units 14 which are coaxially disposed and can perform feeding motion along a longitudinal direction are mounted on the feeding mechanism 12, the feeding directions of the two sets of multi-axis drilling units 14 are opposite, and a processing space 15 for a processed material 003 to enter is formed between the two sets of multi-axis drilling units; each set of multi-axis drilling unit 14 comprises a base 141 slidably connected with the feeding mechanism 12, a speed reducing motor 142 is arranged on the base 141, the output end of the speed reducing motor 42 is connected with a driving gear 143, four driven gears 144 meshed with the driving gear 143 are arranged beside the driving gear 143, and each driven gear 144 is connected with a drill bit 145; the feeding mechanism 12 comprises a guide post 121 mounted on the frame 11 along the longitudinal direction and two first drivers 122, each set of multi-axis drilling units 14 is slidably arranged on the guide post 121 through a base 141, and each first driver 122 is respectively used for controlling the feeding movement of one set of multi-axis drilling units 14; the positioning mechanism 13 includes a vertical direction positioning unit 131 and a longitudinal direction positioning unit 132, the vertical direction positioning unit 131 being disposed below the processing space 15, the longitudinal direction positioning unit 132 being disposed on both sides of the processing space 15.
Preferably, the pretreatment station is further provided with a blanking device, and the blanking device is used for cutting the raw materials according to the required length.
The rear end of the assembly welding station is provided with an accessory assembling station, the accessory assembling station is provided with an accessory assembling tool 31, and the accessory assembling tool 31 is used for supporting the modularized elevator hoistway monomer 002 so as to facilitate the assembly of accessories. As shown in fig. 6 to 8, the accessory assembling fixture 31 includes two sets of adjusting frames 6 for supporting two ends of the modular elevator shaft 002. Each set of adjusting frame 6 comprises a bottom frame 61, a walking assembly 69 is arranged below the bottom frame 61, a lifting guide post 62 along the vertical direction is arranged on the base 61, a lifting assembly 63 is connected to the lifting guide post 62 in a sliding manner, the lifting assembly 63 comprises an intermediate shaft 631 arranged along the horizontal direction and a sleeve 632 sleeved on the lifting guide post 62 and capable of sliding along the lifting guide post 62, the intermediate shaft 631 is connected with the sleeve 632, a lifting control mechanism 64 is connected to the lifting assembly 63, the lifting control mechanism 64 comprises a collar 641 connected with the intermediate shaft 631 and a screw 642 connected with the collar 641, a control hand wheel 643 is connected to the screw 642 in a threaded manner, and the bottom of the control hand wheel 643 is supported on the top of the lifting guide post 62; the intermediate shaft 631 is rotatably connected with two rotating arms 65, each rotating arm 65 is slidably and adjustably connected with two sliding seats 67 for supporting a modularized elevator shaft single body 002, the two sliding seats 67 are respectively arranged at two sides of the rotation center of the rotating arm 65, and each sliding seat 67 is also provided with a locking part 68 for limiting the sliding seat 67 to move relative to the rotating arm 65; the intermediate shaft 631 is further provided with a limiting member 66 for limiting the rotation angle of the rotating arm 65, the limiting member 66 is disc-shaped, and a slot hole is formed in the end surface of the limiting member 66 along the circumferential direction.
Claims (6)
1. The utility model provides a modularization elevator well production line, including the group welding station, its characterized in that: the device at least comprises a pretreatment station arranged at the front end of the assembly welding station and/or an accessory assembly station arranged at the rear end of the assembly welding station; the pretreatment station is provided with multi-axis drilling equipment (1), and the multi-axis drilling equipment (1) is used for drilling holes in the section bars to be assembled and welded; the assembly welding production line (2) is arranged on the assembly welding station, and the assembly welding production line (2) is used for assembling and welding the section bar processed by the pretreatment station and obtaining a plurality of modularized elevator hoistway monomers (002); an accessory assembly tool (31) is arranged on the accessory assembly station, and the accessory assembly tool (31) is used for supporting the modularized elevator hoistway monomer (002) so as to facilitate assembly of accessories;
the assembly welding production line (2) comprises a plurality of groups of portal frames (4) which are arranged in parallel and in parallel along the transverse direction, each group of portal frames (4) comprises two symmetrically arranged struts (41), each strut (41) is provided with an upper supporting arm (421) and a lower supporting arm (422) for placing and positioning a modularized elevator shaft monomer (002), and the upper supporting arms (421) are movably or telescopically arranged on the struts (41);
the multi-axis drilling equipment (1) comprises a frame (11), wherein a feeding mechanism (12) and a positioning mechanism (13) are arranged on the frame (11), two sets of multi-axis drilling units (14) capable of performing feeding motion along the longitudinal direction are arranged on the feeding mechanism (12), the feeding directions of the two sets of multi-axis drilling units (14) are opposite, and a processing space (15) for a processed material (003) to enter is formed between the two sets of multi-axis drilling units; the positioning mechanism (13) comprises a vertical direction positioning unit (131) and a longitudinal direction positioning unit (132), wherein the vertical direction positioning unit (131) is arranged below the processing space (15), and the longitudinal direction positioning unit (132) is arranged on two sides of the processing space (15);
the accessory assembling tool (31) comprises an adjusting frame (6), the adjusting frame (6) comprises a base (61), a lifting guide post (62) along the vertical direction is arranged on the base (61), a lifting assembly (63) is connected to the lifting guide post (62) in a sliding manner, a lifting control mechanism (64) is connected to the lifting assembly (63), the lifting assembly (63) comprises an intermediate shaft (631) arranged along the horizontal direction, a rotating arm (65) is rotatably connected to the intermediate shaft (631), a limiting piece (66) used for limiting the rotating angle of the rotating arm (65) is further arranged on the intermediate shaft (631), two sliding seats (67) are connected to the rotating arm (65) in a sliding manner, and the two sliding seats (67) are respectively arranged on two sides of the rotating center of rotation of the rotating arm (65).
The accessory assembly fixture (31) comprises two sets of adjusting frames (6), the two sets of adjusting frames (6) are symmetrically arranged at two ends of a modularized elevator shaft monomer (002) respectively, and each set of adjusting frames (6) is provided with two rotating arms (65).
2. The modular elevator hoistway production line of claim 1, wherein: the upper support arm (421) is sleeved on the strut (41) so that the upper support arm (421) can rotate around the strut (41) and can move up and down relative to the strut (41) along the vertical direction, and the upper support arm (421) is also connected with a lifting driving mechanism (423) for controlling the upper support arm to move up and down; the lower support arm (422) is fixedly mounted on the support column (41) in the longitudinal direction and is positioned on the inner side of the portal frame (4).
3. The modular elevator hoistway production line of claim 2, wherein: the lower support arm (422) is provided with a positioning component (43), and a jacking device (44) is arranged beside the lower support arm (422).
4. A modular elevator hoistway production line as claimed in claim 3, wherein: the positioning assembly (43) comprises a first positioning module (431) and a second positioning module (432), the first positioning module (431) is adjustably mounted on the upper surface of the lower supporting arm (422), the second positioning module (432) comprises a base (4321) which is adjustably mounted on the upper surface of the lower supporting arm (422), a pushing block (4322) is movably arranged on the base (4321), an eccentric wheel (4323) which is abutted to the pushing block (4322) is further arranged on the base (4321), the jacking device (44) comprises a jacking bracket (441) and a jacking driving mechanism (442), and a carrier roller (443) is arranged on the jacking bracket (441).
5. The modular hoistway production line of claim 1 or 2 or 3 or 4, wherein: the top of two pillars (41) is equipped with crossbeam (25) of connecting two pillars (41) in portal frame (4) of every group, multiunit along crossbeam (25) bottom of portal frame (4) of horizontal direction parallel arrangement be equipped with along track (26) of horizontal direction throughout all portal frames (4), be equipped with hoisting equipment (27) on track (26), track (26) are in the outside extension of marginal portal frame (4) department, the outside extension of track (26) distance is greater than the length of modularization elevator well monomer (002), its end is equipped with support portal frame (28) after track (26) outwards extend.
6. The modular elevator hoistway production line of claim 1, wherein: and the pretreatment station is also provided with a blanking device which is used for cutting the raw materials according to the required length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277218.4A CN110026823B (en) | 2019-04-08 | 2019-04-08 | Modularized elevator shaft production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277218.4A CN110026823B (en) | 2019-04-08 | 2019-04-08 | Modularized elevator shaft production line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110026823A CN110026823A (en) | 2019-07-19 |
| CN110026823B true CN110026823B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910277218.4A Active CN110026823B (en) | 2019-04-08 | 2019-04-08 | Modularized elevator shaft production line |
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| CN (1) | CN110026823B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113458540A (en) * | 2021-08-17 | 2021-10-01 | 东台创跃机电有限公司 | Welding process for pit escalator group for elevator shaft |
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| NO20042751L (en) * | 2003-07-02 | 2005-01-03 | Alstom | Item for mounting in elevator shaft and such shaft, unit for mounting in elevator shaft and method for mounting such unit |
| EP2559647A1 (en) * | 2011-08-18 | 2013-02-20 | Reco Special Products B.V. | A method for assembling a modular lift apparatus, a method for de-assembling a modular lift apparatus, and a modular lift apparatus |
| CN108277997A (en) * | 2018-02-27 | 2018-07-13 | 同济大学 | Modular assembly formula elevator-integrated system of balcony with complementary antidetonation/vibration absorption unit |
| CN109436984A (en) * | 2018-10-19 | 2019-03-08 | 山东华茂钢构有限公司 | A kind of basic and full module-assembled elevator shaft of steel superstructure |
| CN208601037U (en) * | 2018-02-10 | 2019-03-15 | 山东水泊焊割设备制造有限公司 | Aluminium alloy container production line |
| CN210335350U (en) * | 2019-04-08 | 2020-04-17 | 广东凯兴达建筑科技有限公司 | Modularization elevator shaft production line |
-
2019
- 2019-04-08 CN CN201910277218.4A patent/CN110026823B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20042751L (en) * | 2003-07-02 | 2005-01-03 | Alstom | Item for mounting in elevator shaft and such shaft, unit for mounting in elevator shaft and method for mounting such unit |
| EP2559647A1 (en) * | 2011-08-18 | 2013-02-20 | Reco Special Products B.V. | A method for assembling a modular lift apparatus, a method for de-assembling a modular lift apparatus, and a modular lift apparatus |
| CN208601037U (en) * | 2018-02-10 | 2019-03-15 | 山东水泊焊割设备制造有限公司 | Aluminium alloy container production line |
| CN108277997A (en) * | 2018-02-27 | 2018-07-13 | 同济大学 | Modular assembly formula elevator-integrated system of balcony with complementary antidetonation/vibration absorption unit |
| CN109436984A (en) * | 2018-10-19 | 2019-03-08 | 山东华茂钢构有限公司 | A kind of basic and full module-assembled elevator shaft of steel superstructure |
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