CN115924814B - Intelligent elevating gear that municipal administration auxiliary facilities construction was used - Google Patents
Intelligent elevating gear that municipal administration auxiliary facilities construction was used Download PDFInfo
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- CN115924814B CN115924814B CN202310240536.XA CN202310240536A CN115924814B CN 115924814 B CN115924814 B CN 115924814B CN 202310240536 A CN202310240536 A CN 202310240536A CN 115924814 B CN115924814 B CN 115924814B
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- screw rod
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
Abstract
The invention belongs to the technical field of intelligent lifting devices, and particularly discloses an intelligent lifting device for municipal auxiliary facility construction. According to the invention, through the two sets of worm and gear structures, the rotating plate is pushed to rotate in a small range and kept fixed through one set of worm and gear structures, the pushing block can precisely face the installation direction, the pushing block moves the annular pushing guide rail through the first screw rod in a telescopic manner, the bearing table drives municipal facilities to directly move to the installation position under the assistance of the plurality of rotating balls, and meanwhile, after the two conical fixing blocks shrink towards the center of the rotating plate, the bearing table is fixed under the cooperation of the two conical fixing blocks and the fixing groove, so that the municipal facilities are prevented from moving due to vibration generated in the lifting platform in the lifting process.
Description
Technical Field
The invention belongs to the technical field of intelligent lifting devices, and particularly relates to an intelligent lifting device for municipal auxiliary facility construction.
Background
Municipal facilities refer to public facilities that are built by government, legal, or citizen, and generally refer to various buildings, structures, equipment, etc. within a planning area. Urban roads (including bridges), urban rail transit, water supply, water discharge, fuel gas, heat, landscaping, environmental sanitation, road lighting, industrial waste medical waste, household waste treatment equipment, sites and other facilities and auxiliary facilities. When some heavier hanging municipal facilities (such as allies oneself with and arrange red banks, tunnel fan group) are installed, need use elevating gear to promote it, need the installer to adjust municipal facilities's position at elevating gear top simultaneously, and municipal facilities are heavier to lead to installer's working strength reinforcing to the danger when moving the operation has been increased.
Therefore, it is necessary to invent an intelligent lifting device for municipal auxiliary facility construction to solve the above problems.
Disclosure of Invention
The invention provides an intelligent lifting device for municipal auxiliary facility construction, aiming at the problems, and aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the intelligent lifting device for municipal auxiliary facility construction comprises a lifting platform, wherein the bottom of the lifting platform is provided with a lifting frame, a plurality of groups of external pushing mechanisms are arranged in the lifting frame, the bottom of the lifting frame is provided with a bottom supporting frame, the bottom of the bottom supporting frame is provided with a power box, the bottom supporting frame is positioned at two sides of the power box and provided with a plurality of traveling wheels, the periphery of the lifting platform is provided with a barrier guardrail, the top of the lifting platform is provided with a bearing seat, the middle part of the bearing seat is provided with a splicing groove, and the inside of the splicing groove is rotationally spliced with a bearing table;
the inserting groove is positioned at the bottom of the bearing table and is provided with a universal adjusting mechanism, and the top of the bearing table is provided with an article clamping mechanism.
Further, the universal adjusting mechanism comprises a rotating plate and an annular push guide rail, the bottom of the rotating plate is provided with a pushing device, the top of the rotating plate is provided with two adjusting cylinders and two first forward and reverse rotating motors, first screw rods are inserted into the adjusting cylinders in a rotating mode, one section of surface of each first screw rod, which is located inside each adjusting cylinder, is meshed with a first worm wheel, one side of each first worm wheel is meshed with a first worm, one end of each first worm penetrates the adjusting cylinder to extend to the outside, the end of each first worm is fixedly connected with a pushing block, the top of each pushing block is movably inserted into the corresponding annular push guide rail, an annular mounting frame is arranged on the outer side of the rotating plate, a plurality of rotating balls are inserted into the surface of each annular mounting frame in a rotating mode, the top and the bottom of each rotating ball are respectively attached to the bottom of the bearing table and the inner wall of the bottom of each inserting groove, and the outer side of each annular mounting frame is fixedly connected with the side wall of each inserting groove through a plurality of connecting frames.
Further, the pushing device comprises a second worm wheel and a second positive and negative rotating motor, the top of the second worm wheel is fixedly connected with the bottom of the rotating plate, one side of the second worm wheel is connected with a second worm in a meshed mode, and one end of the second worm is fixedly connected with the output end of the second positive and negative rotating motor.
Further, the middle part of the pushing block is fixedly connected with a conical fixing block, and a plurality of fixing grooves are formed in the surface of the annular pushing guide rail.
Further, the outside of the bottom support frame is hinged with four support legs which are telescopic.
Further, article clamp and get the mechanism and include second lead screw and two removal grooves, the second lead screw rotates and runs through two removal grooves, and the second lead screw tip runs through the plummer and extends to outside, second lead screw one end fixedly connected with adjust knob, adjust knob tip is provided with interior hexagonal recess, the second lead screw is located two working grooves internal thread surface and has all cup jointed the slider, the slider top is provided with removable clamp and gets the piece, removable clamp gets piece bottom and slider top through bolt and nut fixed connection.
Further, the center lines of the rotating plate and the annular pushing guide rail are in the same straight line with the center line of the bearing table, and the width of the groove of the annular pushing guide rail is larger than the sum of the widths of the conical fixed block and the pushing block.
Further, the transmission ratio between the first worm wheel and the first worm is 1:4, the transmission ratio between the second worm wheel and the second worm is 1:6.
further, the two first forward and reverse rotating motors are arranged in a circumferential array relative to the center of the rotating plate, and the two first screw rods can be inserted into the other adjusting cylinder.
The invention has the technical effects and advantages that:
1. according to the invention, through the two sets of worm and gear structures, the rotating plate is pushed to rotate in a small range and kept fixed through one set of worm and gear structures, the pushing block can precisely face the installation direction, the pushing block moves the annular pushing guide rail through the first screw rod in a telescopic manner, the bearing table drives municipal facilities to directly move to the installation position under the assistance of the plurality of rotating balls, so that the position adjustment of the municipal facilities is more convenient, the dangerous condition caused by manual adjustment is avoided, and meanwhile, after the two conical fixing blocks shrink towards the center of the rotating plate, the bearing table is fixed under the cooperation of the two conical fixing blocks and the fixing groove, the municipal facilities are prevented from moving due to vibration generated in the lifting platform in the lifting process, and the municipal facilities are prevented from suddenly moving to cause the injury of installation personnel.
2. According to the invention, through the arranged article clamping mechanism, municipal facilities are conveniently and rapidly clamped and fixed, so that the municipal facilities are ensured to be stable when the lifting platform ascends, and meanwhile, the replaceable clamping blocks matched with the municipal facilities can be replaced for use, so that the municipal facilities are more convenient to install.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic overall structure of an embodiment of the present invention;
FIG. 2 illustrates a front view of a load-bearing table in an embodiment of the invention;
FIG. 3 is a view showing an internal construction of a susceptor in an embodiment of the present invention;
FIG. 4 illustrates a bottom view of an annular push rail in an embodiment of the present invention;
in the figure: 1. a lifting platform; 2. a lifting frame; 3. a bottom support frame; 4. a power box; 5. a walking wheel; 6. a barrier guardrail; 7. a bearing seat; 8. a plug-in groove; 9. a carrying platform; 10. a rotating plate; 11. an annular push rail; 12. an adjustment cylinder; 13. a first forward/reverse rotation motor; 14. a first screw rod; 15. a first worm wheel; 16. a first worm; 17. a pushing block; 18. an annular mounting frame; 19. a rotating ball; 20. a second worm wheel; 21. a second worm; 22. a second forward/reverse rotation motor; 23. a conical fixed block; 24. a fixing groove; 25. support legs; 26. a moving groove; 27. a second screw rod; 28. an adjustment knob; 29. a slide block; 30. the clamping block can be replaced.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides an intelligent lifting device for municipal auxiliary facility construction, which is shown in fig. 1-3, and comprises a lifting platform 1, wherein the bottom of the lifting platform 1 is provided with a lifting frame 2, a plurality of groups of external pushing mechanisms are arranged in the lifting frame 2, the bottom of the lifting frame 2 is provided with a bottom support frame 3, the outer side of the bottom support frame 3 is hinged with four support legs 25, the four support legs 25 are all in telescopic arrangement, the bottom of the bottom support frame 3 is provided with a power box 4, the bottom support frame 3 is positioned at two sides of the power box 4 and provided with a plurality of traveling wheels 5, the periphery of the lifting platform 1 is provided with blocking guardrails 6, the top of the lifting platform 1 is provided with a bearing seat 7, the middle part of the bearing seat 7 is provided with a splicing groove 8, and the inside of the splicing groove 8 is rotatably spliced with a bearing table 9;
the inserting groove 8 is arranged at the bottom of the bearing table 9 and is provided with a universal adjusting mechanism, and the top of the bearing table 9 is provided with an article clamping mechanism.
When heavy municipal facilities need to be installed, the power box 4 provides power for the traveling wheels 5 to enable the lifting platform 1 and the bottom supporting frame 3 to move to the bottom of the installation position, then the four supporting legs 25 are opened to provide strong support for the bottom supporting frame 3, then the municipal facilities are placed on the top of the bearing table 9 and clamped and fixed through the article clamping mechanism, installation personnel subsequently enter the bearing table 9, multiple groups of external pushing mechanisms are started to work simultaneously to enable the lifting platform 2 to lift the lifting platform 1 to enable the municipal facilities to approach the installation position of the lifting platform, the municipal facilities are enabled to move to the installation position through any movement of the bearing table 9 through the universal adjusting mechanism, then the installation personnel install the municipal facilities at the installation position of the municipal facilities, and after the article clamping mechanism is opened, the lifting platform 1 can be lowered back to the original position again.
As shown in fig. 2-4, the universal adjusting mechanism includes a rotating plate 10 and an annular push rail 11, the center lines of the rotating plate 10 and the annular push rail 11 are all in the same straight line with the center line of the bearing table 9, a pushing device is arranged at the bottom of the rotating plate 10, the pushing device includes a second worm wheel 20 and a second forward and reverse rotation motor 22, the top of the second worm wheel 20 is fixedly connected with the bottom of the rotating plate 10, one side of the second worm wheel 20 is in meshed connection with a second worm 21, and the transmission ratio between the second worm wheel 20 and the second worm 21 is 1:6, second worm 21 one end and second positive and negative motor 22 output fixed connection, the rotor plate 10 top is provided with two regulation section of thick bamboo 12 and two first positive and negative motor 13, two first positive and negative motor 13 relative rotor plate 10 central circumference array settings, the inside rotation of regulation section of thick bamboo 12 is pegged graft and is had first lead screw 14, two first lead screw 14 all can peg graft to another regulation section of thick bamboo 12 inside, first lead screw 14 is located the inside one section of surface engagement of regulation section of thick bamboo 12 and has cup jointed first worm wheel 15, first worm wheel 15 one side meshing is connected with first worm 16, the transmission ratio between first worm wheel 15 and the first worm 16 is 1:4, first worm 16 one end runs through adjustment cylinder 12 and extends to outside, and first worm 16 tip and the corresponding first positive and negative motor 13 output fixed connection, first lead screw 14 one end fixedly connected with impeller 17, inside impeller 17 top activity grafting is in annular impeller 11, impeller 17 middle part fixedly connected with toper fixed block 23, a plurality of fixed slots 24 have been seted up on annular impeller 11 surface, annular impeller 11 recess width is greater than the sum of toper fixed block 23 and impeller 17 width, the rotor plate 10 outside is provided with annular mounting bracket 18, and annular mounting bracket 18 surface rotates and peg graft and have a plurality of spin balls 19, spin ball 19 top and bottom respectively with plummer 9 bottom and grafting groove 8 bottom inner wall laminating, annular mounting bracket 18 outside is through a plurality of link and grafting groove 8 lateral wall surface fixed connection.
The operation system is used for operating the touch display screen of the municipal facility, the second worm wheel 20 drives the second worm 21 to rotate along with the second worm wheel 22 and drives the rotating plate 10 to rotate in a small range until the two adjusting cylinders 12 are overlapped with the straight line of the center distance installation position of the rotating plate 10, then the two first forward and reverse rotating motors 13 simultaneously work and drive the corresponding first worm 16 to rotate, the two first worm 16 rotate in opposite directions, the two screw rods are driven by the corresponding first worm wheel 15 to move, the two pushing blocks 17 simultaneously move towards the installation position, one pushing block 17 pushes the annular pushing guide rail 11 to enable the bearing platform 9 to move, under the rotating action of the rotating balls 19, the bearing platform 9 drives municipal facilities to move to the installation position, an installer can install the municipal facilities, and before the municipal facilities are placed on the bearing platform 9, the first forward and reverse rotating motors 13 rotate, so that the two first screw rods 14 move towards the center position of the rotating plate 10, the two conical fixing blocks 23 are inserted into the corresponding fixing grooves 24, and the two conical fixing blocks 23 and the two conical fixing blocks 24 are tightly matched with the fixing grooves 24 to be prevented from moving up and down, and the vibration of the bearing platform 1 cannot be caused by the rotation of the bearing platform.
According to the invention, through the two sets of worm and gear structures, the rotating plate 10 is pushed to rotate in a small range and kept fixed through one set of worm and gear structures, the pushing block 17 can precisely face the installation direction, the pushing block 17 moves the annular pushing guide rail 11 through the telescopic action of the first screw rod 14, the bearing table 9 drives municipal facilities to directly move to the installation position under the assistance of the plurality of rotating balls 19, and meanwhile, after the two conical fixing blocks 23 shrink towards the center of the rotating plate 10, the bearing table 9 is fixed under the cooperation of the two conical fixing blocks 23 and the fixing groove 24, so that municipal facilities are prevented from moving due to vibration generated in the lifting platform 1 in the lifting process, and the municipal facilities are prevented from being suddenly moved to cause injury of installation personnel.
As shown in fig. 2-3, the article clamping mechanism comprises a second screw rod 27 and two moving grooves 26, the second screw rod 27 rotates to penetrate through the two moving grooves 26, the end part of the second screw rod 27 penetrates through the bearing table 9 to extend to the outside, one end of the second screw rod 27 is fixedly connected with an adjusting knob 28, the end part of the adjusting knob 28 is provided with an inner hexagonal groove, the surfaces of the second screw rod 27, which are positioned in the two working grooves, are sleeved with sliding blocks 29, the two sections of surface threads of the second screw rod 27 are oppositely arranged, the top of the sliding blocks 29 is provided with replaceable clamping blocks 30, and the bottom of each replaceable clamping block 30 is fixedly connected with the top of each sliding block 29 through bolts and nuts.
After municipal facilities are placed at the top of the bearing table 9, the adjusting knob 28 is driven by the hexagonal wrench to rotate the second screw rod 27, and the two sections of surface threads of the second screw rod are reversely arranged, so that the two sliding blocks 29 drive the two replaceable clamping blocks 30 to move in opposite directions, and the replaceable clamping blocks 30 corresponding to the municipal facilities clamp and fix the municipal facilities.
According to the invention, through the arranged article clamping mechanism, municipal facilities are conveniently and rapidly clamped and fixed, so that the municipal facilities are ensured to be kept stable when the lifting platform 1 ascends, and meanwhile, the replaceable clamping blocks 30 matched with the municipal facilities can be replaced for use, so that the municipal facilities are more convenient to install.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. The utility model provides an intelligent elevating gear that municipal administration auxiliary facilities construction was used, includes lift platform (1), its characterized in that: lifting platform (1) bottom is provided with crane (2), be provided with multiunit outside pushing mechanism in crane (2), crane (2) bottom is provided with end support frame (3), end support frame (3) bottom is provided with headstock (4), end support frame (3) are located headstock (4) both sides and are provided with a plurality of walking wheels (5), lifting platform (1) are provided with barrier guardrail (6) all around, lifting platform (1) top is provided with carrier (7), jack (8) have been seted up at carrier (7) middle part, jack (8) inside rotates to peg graft and has plummer (9), jack (8) are located plummer (9) bottom and are provided with the universal adjustment mechanism, plummer (9) top is provided with article clamp and get the mechanism;
the universal adjusting mechanism comprises a rotating plate (10) and an annular push guide rail (11), wherein a pushing device is arranged at the bottom of the rotating plate (10), two adjusting cylinders (12) and two first forward and reverse rotating motors (13) are arranged at the top of the rotating plate (10), a first screw rod (14) is inserted into the adjusting cylinders (12) in a rotating mode, a first worm wheel (15) is sleeved on one section of the surface of the first screw rod (14) positioned in the adjusting cylinders (12) in a meshed mode, a first worm (16) is connected to one side of the first worm wheel (15) in a meshed mode, one end of the first worm (16) penetrates through the adjusting cylinders (12) to the outside, the end portion of the first worm (16) is fixedly connected with the output end of the corresponding first forward and reverse rotating motor (13), a pushing block (17) is fixedly connected to one end of the first screw rod (14), a conical fixing block (23) is fixedly connected to the middle portion of the pushing block (17), a plurality of fixing grooves (24) are formed in the surface of the annular push guide rail (11), the top of the pushing block (17) is movably inserted into the annular push guide rail (11), an annular (18) is arranged on the outer side of the rotating plate (10), a plurality of annular (18) is arranged on the surface of the inner wall (18), a plurality of rotary balls (19) are inserted into the rotary ball-shaped mounting frames (19) and the rotary ball-shaped inner wall (19) respectively, the rotary ball-shaped inner faces (19) are attached to the bottom (8) respectively, the outer side of the annular mounting frame (18) is fixedly connected with the surface of the side wall of the inserting groove (8) through a plurality of connecting frames;
the pushing device comprises a second worm wheel (20) and a second positive and negative rotating motor (22), the top of the second worm wheel (20) is fixedly connected with the bottom of the rotating plate (10), one side of the second worm wheel (20) is connected with a second worm (21) in a meshed manner, and one end of the second worm (21) is fixedly connected with the output end of the second positive and negative rotating motor (22);
the central lines of the rotating plate (10) and the annular pushing guide rail (11) are in the same straight line with the central line of the bearing table (9), and the width of the groove of the annular pushing guide rail (11) is larger than the sum of the widths of the conical fixed block (23) and the pushing block (17);
the two first forward and reverse rotating motors (13) are arranged in a circumferential array relative to the center of the rotating plate (10), and the two first screw rods (14) can be inserted into the other adjusting cylinder (12).
2. The intelligent lifting device for municipal auxiliary facility construction according to claim 1, wherein: four supporting legs (25) are hinged to the outer side of the bottom supporting frame (3), and the four supporting legs (25) are telescopic.
3. The intelligent lifting device for municipal auxiliary facility construction according to claim 1, wherein: the article clamping mechanism comprises a second screw rod (27) and two movable grooves (26), the second screw rod (27) rotates to penetrate through the two movable grooves (26), the end part of the second screw rod (27) penetrates through the bearing table (9) to extend to the outside, one end of the second screw rod (27) is fixedly connected with an adjusting knob (28), the end part of the adjusting knob (28) is provided with an inner hexagonal groove, the second screw rod (27) is located in two working grooves, the inner threaded surfaces of the two working grooves are sleeved with sliding blocks (29), the tops of the sliding blocks (29) are provided with replaceable clamping blocks (30), and the bottoms of the replaceable clamping blocks (30) are fixedly connected with the tops of the sliding blocks (29) through bolts and nuts.
4. The intelligent lifting device for municipal auxiliary facility construction according to claim 1, wherein: the transmission ratio between the first worm wheel (15) and the first worm (16) is 1:4, the transmission ratio between the second worm wheel (20) and the second worm (21) is 1:6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310240536.XA CN115924814B (en) | 2023-03-14 | 2023-03-14 | Intelligent elevating gear that municipal administration auxiliary facilities construction was used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310240536.XA CN115924814B (en) | 2023-03-14 | 2023-03-14 | Intelligent elevating gear that municipal administration auxiliary facilities construction was used |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115924814A CN115924814A (en) | 2023-04-07 |
| CN115924814B true CN115924814B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310240536.XA Active CN115924814B (en) | 2023-03-14 | 2023-03-14 | Intelligent elevating gear that municipal administration auxiliary facilities construction was used |
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| CN106983490A (en) * | 2017-05-19 | 2017-07-28 | 临泽县锐翔科技开发有限责任公司 | A kind of ophthalmological instrument turntable |
| CN109372523A (en) * | 2018-12-13 | 2019-02-22 | 华东交通大学 | Rotary bracket is used in a kind of construction of tunnel blasting excavation |
| CN213688210U (en) * | 2020-12-30 | 2021-07-13 | 南京宝凯通机械设备有限公司 | Adjustable workbench for assisting alignment of interferometer |
| CN215626470U (en) * | 2021-04-28 | 2022-01-25 | 中建五局第三建设有限公司 | Electromechanical mounting auxiliary assembly |
| CN217502798U (en) * | 2022-06-17 | 2022-09-27 | 青岛海诚能源科技有限公司 | Natural gas long-distance pipeline construction pipe stabilizing device |
| CN115367662A (en) * | 2022-09-29 | 2022-11-22 | 李田 | Lifting equipment and lifting method for bridge construction |
-
2023
- 2023-03-14 CN CN202310240536.XA patent/CN115924814B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106983490A (en) * | 2017-05-19 | 2017-07-28 | 临泽县锐翔科技开发有限责任公司 | A kind of ophthalmological instrument turntable |
| CN109372523A (en) * | 2018-12-13 | 2019-02-22 | 华东交通大学 | Rotary bracket is used in a kind of construction of tunnel blasting excavation |
| CN213688210U (en) * | 2020-12-30 | 2021-07-13 | 南京宝凯通机械设备有限公司 | Adjustable workbench for assisting alignment of interferometer |
| CN215626470U (en) * | 2021-04-28 | 2022-01-25 | 中建五局第三建设有限公司 | Electromechanical mounting auxiliary assembly |
| CN217502798U (en) * | 2022-06-17 | 2022-09-27 | 青岛海诚能源科技有限公司 | Natural gas long-distance pipeline construction pipe stabilizing device |
| CN115367662A (en) * | 2022-09-29 | 2022-11-22 | 李田 | Lifting equipment and lifting method for bridge construction |
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| CN115924814A (en) | 2023-04-07 |
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