CN114408768A - A lifting machine for mechanical engineering - Google Patents

A lifting machine for mechanical engineering Download PDF

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Publication number
CN114408768A
CN114408768A CN202111521707.3A CN202111521707A CN114408768A CN 114408768 A CN114408768 A CN 114408768A CN 202111521707 A CN202111521707 A CN 202111521707A CN 114408768 A CN114408768 A CN 114408768A
Authority
CN
China
Prior art keywords
fixedly connected
plate
lifting
mechanical engineering
grooves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202111521707.3A
Other languages
Chinese (zh)
Inventor
李�杰
吴明明
李雨城
王莉霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Sanlian University
Original Assignee
Anhui Sanlian University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Sanlian University filed Critical Anhui Sanlian University
Priority to CN202111521707.3A priority Critical patent/CN114408768A/en
Publication of CN114408768A publication Critical patent/CN114408768A/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/42Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with jibs of adjustable configuration, e.g. foldable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12Slings comprising chains, wires, ropes, or bands; Nets
    • B66C1/14Slings with hooks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/46Mobile jib-cranes with non-slewable jibs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/64Jibs
    • B66C23/68Jibs foldable or otherwise adjustable in configuration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • B66C23/78Supports, e.g. outriggers, for mobile cranes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The invention discloses a lifting machine for mechanical engineering, which comprises a base, wherein one end of the base is fixedly connected with a connecting frame, the top of the connecting frame is fixedly connected with a cross beam, the bottom of the cross beam is provided with a sliding groove, the inner wall of the sliding groove is slidably provided with a lifting trolley, the bottom of the lifting trolley is fixedly connected with a hanging frame, the inner wall of the hanging frame is fixedly provided with a main winch, and a main lifting rope is wound and connected on the main winch; the auxiliary hoisting ropes are used for dragging and fixing the positions of the hoisted objects, so that the large-volume objects are hoisted more uniformly and stably; through setting up the extension board to set up the extending groove that matches unanimous with spout size shape on the extension board, realize the extension to handling dolly movement distance, and then make this device can realize the material handling of longer distance.

Description

A lifting machine for mechanical engineering
Technical Field
The invention relates to a crane, in particular to a crane for mechanical engineering.
Background
During machining and manufacturing, mechanical parts are often required to be hoisted, and the mechanical parts are moved to required positions and then put down through a hoisting device.
The lifting device shown in fig. 1 is used for lifting an object through the lifting mechanism, and adjusting the inclination of a cross beam through the telescopic rod in the lifting process, so that the cross beam is kept horizontal, and the lifting stability is guaranteed. However, when the hoisting device is used for hoisting large-size articles, the hoisting device is easy to shake, the hoisting stability is insufficient, the hoisting operation is inconvenient, and meanwhile, the hoisting structure is fixed in size, cannot be adjusted according to actual use requirements, and is not flexible and convenient to use.
Disclosure of Invention
The object of the present invention is to provide a crane for mechanical engineering to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a lifting machine for mechanical engineering comprises a base, wherein one end of the base is fixedly connected with a connecting frame, the top of the connecting frame is fixedly connected with a cross beam, the bottom of the cross beam is provided with a sliding groove, the inner wall of the sliding groove is slidably provided with a lifting trolley, the bottom of the lifting trolley is fixedly connected with a hanging frame, the inner wall of the hanging frame is fixedly provided with a main winch, and a lifting rope is wound and connected on the main winch;
the bottom fixedly connected with erection column of main handling rope, the bottom of erection column sets up to taper shape and fixedly connected with main handling hook, the middle part sliding connection of erection column outer wall has the bearing board, the border fixedly connected with a plurality of vice hoisting machine at bearing board top, a plurality of all wind on the vice hoist machine and be connected with vice handling rope, a plurality of the equal fixedly connected with vice handling hook in bottom of vice handling rope.
As a further scheme of the invention: the top fixedly connected with of erection column has the grip block, the bottom threaded connection of erection column has the centre gripping sleeve pipe, the bottom of centre gripping sleeve pipe sets up to the taper shape with erection column bottom assorted, grip block under the top fixedly connected with of centre gripping sleeve pipe, grip block top and the bottom laminating contact of bearing board down.
As a further scheme of the invention: one end of the cross beam is rotatably connected with an extension plate, the inner wall of the extension plate is provided with an extension groove, and the size of the extension groove is matched with that of the sliding groove;
bottom plate grooves are formed in the two sides of the top of the base, the inner walls of the two bottom plate grooves are connected with supporting frames in a sliding mode, supporting grooves are formed in the two sides of the cross beam, and the tops of the two supporting frames are connected with the inner walls of the two supporting grooves in a sliding mode; side grooves are formed in two sides of the extension plate, one ends of the two side grooves correspond to one ends of the two supporting grooves respectively, inclined supporting rods are fixedly connected to one sides of the tops of the two supporting frames, and the tops of the two inclined supporting rods are connected with the inner walls of the two side grooves in a sliding mode respectively.
As a further scheme of the invention: the bottom of the base is provided with a bottom cavity, adjusting cylinders are fixedly mounted on two sides of the inner wall of the bottom cavity, a fixed plate is fixedly connected to the middle of the bottom cavity, adjusting plates are rotatably connected to two sides of the fixed plate, adjusting grooves are formed in the middle of the two adjusting plates, and output ends of the two adjusting cylinders are respectively connected with the inner walls of the two adjusting grooves in a sliding manner; the end parts of the two adjusting plates are fixedly connected with backing plates.
Compared with the prior art, the invention has the beneficial effects that: the auxiliary hoisting ropes are used for dragging and fixing the positions of the hoisted objects, so that the large-volume objects are hoisted more uniformly and stably; the supporting plate is fixedly connected with the mounting column through the matched clamping action of the upper clamping plate and the lower clamping plate, so that a plurality of structures such as auxiliary winches, auxiliary hoisting hooks and the like can move together with the mounting column, and the supporting plate can be separated from the mounting column by rotating and taking down the clamping sleeve when necessary, so that the main hoisting hook can carry out hoisting operation independently, and the using flexibility of the device is improved;
by arranging the extension plate and arranging the extension groove on the extension plate, the size and the shape of the extension groove are matched with those of the sliding groove, so that the movement distance of the hoisting trolley is prolonged, and further, the device can realize hoisting of materials with longer distance; simultaneously because extension board itself rotates with the crossbeam to be connected for when extension board does not use, can overturn and fold and accomodate, remove with the holistic transport of convenient device.
Drawings
FIG. 1 is a schematic diagram of a prior art device;
FIG. 2 is a perspective view of the present invention;
FIG. 3 is a cross-sectional view of the beam of the present invention;
FIG. 4 is a cross-sectional view of the mounting post of the present invention;
fig. 5 is a cross-sectional view of the base of the present invention.
In the figure: 1. a base; 2. a connecting frame; 3. a cross beam; 4. a chute; 5. hoisting a trolley; 6. a main hoist; 7. a main hoisting rope; 8. mounting a column; 9. a main lifting hook; 10. a support plate; 11. an auxiliary hoist; 13. an upper clamping plate; 14. clamping the sleeve; 15. a lower clamping plate; 16. an extension plate; 17. an extension groove; 18. a support frame; 19. a support groove; 20. a side groove; 21. a diagonal brace; 22. an adjusting cylinder; 23. an adjusting plate; 24. a backing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2 and 3, in an embodiment of the present invention, a lifting machine for mechanical engineering includes a base 1, one end of the base 1 is fixedly connected with a connecting frame 2, the top of the connecting frame 2 is fixedly connected with a cross beam 3, the bottom of the cross beam 3 is provided with a sliding chute 4, the inner wall of the sliding chute 4 is slidably provided with a lifting trolley 5, the bottom of the lifting trolley 5 is fixedly connected with a hanging frame, the inner wall of the hanging frame is fixedly provided with a main winch 6, and the main winch 6 is wound and connected with a main lifting rope 7; the hoisting trolley 5 drives the main winch 6 to move so as to drive the main hoisting hook 9 and other structures to move, so that the device can drive the articles to horizontally move while hoisting the articles;
referring to fig. 2 and 4, the bottom of the main hoisting rope 7 is fixedly connected with an installation column 8, the bottom of the installation column 8 is arranged to be in a taper shape and is fixedly connected with a main hoisting hook 9, the middle part of the outer wall of the installation column 8 is slidably connected with a supporting plate 10, the edge of the top of the supporting plate 10 is fixedly connected with a plurality of auxiliary hoisting machines 11, the auxiliary hoisting ropes are wound and connected on the plurality of auxiliary hoisting machines 11, and the bottoms of the plurality of auxiliary hoisting ropes are fixedly connected with auxiliary hoisting hooks; by arranging the supporting plate 10 and installing the auxiliary winches 11 on the supporting plate 10, the object posture is more balanced and stable during lifting by utilizing the traction and fixation of the auxiliary lifting ropes on all positions of the lifted object.
The top of the mounting column 8 is fixedly connected with an upper clamping plate 13, the bottom of the mounting column 8 is in threaded connection with a clamping sleeve 14, the bottom of the clamping sleeve 14 is in a taper shape matched with the bottom of the mounting column 8, the top of the clamping sleeve 14 is fixedly connected with a lower clamping plate 15, and the top of the lower clamping plate 15 is in fit contact with the bottom of the bearing plate 10; through the cooperation clamping action of last grip block 13 and lower grip block 15, with supporting board 10 and erection column 8 fixed connection for structures such as a plurality of auxiliary hoist 11 and vice handling hook can remove jointly with erection column 8, take off centre gripping sleeve pipe 14 through rotating as necessary, make supporting board 10 can separate with erection column 8, make main handling hook 9 can carry out the handling operation alone, improve the flexibility that the device used.
Referring to fig. 2 and 3, one end of the cross beam 3 is rotatably connected with an extension plate 16, an extension groove 17 is formed in the inner wall of the extension plate 16, the size and shape of the extension groove 17 are matched with those of the sliding groove 4, and the extension plate 16 is arranged and the extension groove 17 matched with the sliding groove 4 in size and shape is formed in the extension plate 16, so that the movement distance of the lifting trolley 5 is prolonged, and further, the device can lift materials at a longer distance; meanwhile, the extension plate 16 is rotationally connected with the cross beam 3, so that the extension plate 16 can be turned, folded and stored when not used, and the whole device is convenient to carry and move;
referring to fig. 2, bottom plate grooves are formed in both sides of the top of the base 1, the inner walls of the two bottom plate grooves are slidably connected with supporting frames 18, supporting grooves 19 are formed in both sides of the cross beam 3, and the tops of the two supporting frames 18 are slidably connected with the inner walls of the two supporting grooves 19 respectively; two sides of the extension plate 16 are respectively provided with a side groove 20, one end of each side groove 20 is respectively arranged corresponding to one end of each support groove 19, one side of the top of each support frame 18 is fixedly connected with an inclined strut 21, and the top of each inclined strut 21 is respectively connected with the inner wall of each side groove 20 in a sliding manner; when the supporting frame 18 moves to the end of the bottom plate slot, the top of the supporting frame 18 is still located in the supporting slot 19, and the top of the inclined strut 21 is located in the side slot 20, so as to ensure stable support for the beam 3 part and the extension plate 16 part; one side of the inclined strut 21 facing the support frame 18 is fixedly connected with a reinforcing rod, so that the connection stability of the inclined strut 21 and the support frame 18 is improved;
in specific implementation, the bearing rollers can be rotatably connected to one side of the two support frames 18 and one side of the two diagonal braces 21, the diameter of each bearing roller is slightly smaller than the width of the inner wall of the support groove 19, so that one side of each bearing roller extends into the support groove 19 and the side groove 20, and the stability of the support frames 18 and the diagonal braces 21 during movement is improved;
referring to fig. 5, a bottom cavity is formed at the bottom of a base 1, adjusting cylinders 22 are fixedly mounted on two sides of the inner wall of the bottom cavity, a fixing plate is fixedly connected to the middle of the bottom cavity, adjusting plates 23 are rotatably connected to two sides of the fixing plate, adjusting grooves are formed in the middle of the two adjusting plates 23, output ends of the two adjusting cylinders 22 are respectively connected with the inner walls of the two adjusting grooves in a sliding manner, the adjusting cylinders 22 are arranged to drive the adjusting plates 23 to rotate and incline, the posture of the base 1 is adjusted, and therefore when the device is placed on an inclined ground to work, a cross beam 3 can be kept horizontal; the ends of the two adjusting plates 23 are fixedly connected with backing plates 24.
The working principle of the invention is as follows: the main hoisting rope 7 and the mounting column 8 are driven to descend through the main winch 6, the main hoisting hook 9 is driven to descend, the main hoisting hook 9 is used for fixedly hoisting the articles, then the main hoisting rope 7 is wound by starting the main winch 6, the articles are hoisted, and the hoisting trolley 5 is started to drive the hoisted articles to move, so that the articles are hoisted;
when the volume of the lifted article is large and the stability of the article is poor during lifting, the bearing plate 10 is sleeved on the mounting column 8 from bottom to top, the clamping sleeve 14 is sleeved at the bottom of the mounting column 8 and is rotated and screwed, so that the top of the lower clamping plate 15 and the bottom of the upper clamping plate 13 are stably attached to the bearing plate 10, and the bearing plate 10 and the mounting column 8 are fixed;
then, the auxiliary hoisting hooks on the four auxiliary winches 11 are respectively and fixedly connected with the corners of the article, the four auxiliary hoisting ropes are respectively driven by the four auxiliary winches 11 to move up and down, and the height of each corner position of the article is adjusted, so that the article is kept horizontal and stable; then the lifting trolley 5 drives the articles to move so as to lift the articles;
when the hoisting distance needs to be prolonged, the extension plate 16 can be turned over, so that the extension groove 17 and the sliding groove 4 are in butt joint combination, the support frame 18 is slid, one end of the inclined strut 21 slides into the side groove 20, the extension plate 16 is supported, and the bearing capacity of the extension plate 16 is further improved; the lifting trolley 5 can move to the position below the extension plate 16, and the lifting distance is further prolonged;
in the working area of the device, when the ground is not inclined normally, the adjusting cylinder 22 is started to drive the adjusting plate 23 to rotate and incline, and the inclined state of the base 1 is adjusted, so that the cross beam 3 is kept horizontal when the device works;
when the device is being transported, the support bracket 18 is moved so that the diagonal brace 21 is out of contact with the side slot 20, and then the folded extension panel 16 is flipped over to be stored.
Although the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalents and alternatives falling within the spirit and scope of the invention.

Claims (6)

1. A lifting machine for mechanical engineering comprises a base (1), wherein one end of the base (1) is fixedly connected with a connecting frame (2), the top of the connecting frame (2) is fixedly connected with a cross beam (3), and is characterized in that a sliding groove (4) is formed in the bottom of the cross beam (3), a lifting trolley (5) is slidably mounted on the inner wall of the sliding groove (4), a main lifting machine (6) is fixedly connected to the bottom of the lifting trolley (5), a main lifting rope (7) is wound and connected onto the main lifting machine (6), a mounting column (8) is fixedly connected to the bottom of the main lifting rope (7), a main lifting hook (9) is fixedly mounted at the bottom of the mounting column (8), a bearing plate (10) is slidably connected to the middle of the outer wall of the mounting column (8), and a plurality of auxiliary lifting machines (11) are fixedly connected to the edge of the top of the bearing plate (10), a plurality of auxiliary hoisting ropes are wound and connected on the auxiliary winches (11), and a plurality of auxiliary hoisting hooks are fixedly connected at the bottoms of the auxiliary hoisting ropes.
2. The lifting machine for mechanical engineering according to claim 1, wherein the top of the mounting column (8) is fixedly connected with an upper clamping plate (13), the bottom of the mounting column (8) is in threaded connection with a clamping sleeve (14), the top of the clamping sleeve (14) is fixedly connected with a lower clamping plate (15), and the top of the lower clamping plate (15) is in contact with the bottom of the bearing plate (10).
3. The lifting machine for mechanical engineering according to claim 1, wherein one end of the cross beam (3) is rotatably connected with an extension plate (16), an extension groove (17) is formed in the inner wall of the extension plate (16), and the size of the extension groove (17) is matched with that of the sliding groove (4) uniformly.
4. The lifting machine for mechanical engineering according to claim 3, wherein the two sides of the top of the base (1) are both slidably connected with support frames (18), the two sides of the cross beam (3) are both provided with support grooves (19), and the tops of the two support frames (18) are respectively slidably connected with the inner walls of the two support grooves (19).
5. The hoisting machine for mechanical engineering as claimed in claim 4, wherein the extension plate (16) is provided with side grooves (20) on both sides, one end of each of the side grooves (20) is corresponding to one end of each of the two support grooves (19), one side of the top of each of the two support frames (18) is fixedly connected with a diagonal brace (21), and the top of each of the diagonal braces (21) is slidably connected with the inner wall of each of the side grooves (20).
6. The hoisting machine for mechanical engineering according to claim 1, wherein the bottom of the base (1) is provided with a bottom cavity, adjusting cylinders (22) are fixedly mounted on both sides of the inner wall of the bottom cavity, a fixed plate is fixedly connected to the middle of the bottom cavity, adjusting plates (23) are rotatably connected to both sides of the fixed plate, adjusting grooves are formed in the middle of the two adjusting plates (23), and the output ends of the two adjusting cylinders (22) are slidably connected to the inner walls of the two adjusting grooves, respectively.
CN202111521707.3A 2021-12-13 2021-12-13 A lifting machine for mechanical engineering Withdrawn CN114408768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111521707.3A CN114408768A (en) 2021-12-13 2021-12-13 A lifting machine for mechanical engineering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111521707.3A CN114408768A (en) 2021-12-13 2021-12-13 A lifting machine for mechanical engineering

Publications (1)

Publication Number Publication Date
CN114408768A true CN114408768A (en) 2022-04-29

Family

ID=81266125

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111521707.3A Withdrawn CN114408768A (en) 2021-12-13 2021-12-13 A lifting machine for mechanical engineering

Country Status (1)

Country Link
CN (1) CN114408768A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117125614A (en) * 2023-10-25 2023-11-28 成都市大通路桥机械有限公司 Hoisting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117125614A (en) * 2023-10-25 2023-11-28 成都市大通路桥机械有限公司 Hoisting device
CN117125614B (en) * 2023-10-25 2024-01-19 成都市大通路桥机械有限公司 Hoisting device

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