CN214359909U - Steel construction lifting device - Google Patents

Steel construction lifting device Download PDF

Info

Publication number
CN214359909U
CN214359909U CN202023124940.1U CN202023124940U CN214359909U CN 214359909 U CN214359909 U CN 214359909U CN 202023124940 U CN202023124940 U CN 202023124940U CN 214359909 U CN214359909 U CN 214359909U
Authority
CN
China
Prior art keywords
fixing base
steel structure
hoist
automobile body
chaining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202023124940.1U
Other languages
Chinese (zh)
Inventor
何豪杰
徐肖瀚
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.)
Shanghai Shangan Mechanical Construction Co ltd
Original Assignee
Shanghai Shangan Mechanical Construction Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Shangan Mechanical Construction Co ltd filed Critical Shanghai Shangan Mechanical Construction Co ltd
Priority to CN202023124940.1U priority Critical patent/CN214359909U/en
Application granted granted Critical
Publication of CN214359909U publication Critical patent/CN214359909U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The utility model belongs to the technical field of the mechanical equipment technique and specifically relates to a steel construction lifting device is related to, it includes the automobile body, davit and actuating mechanism, be equipped with the hoist cable on the davit, be equipped with hoist mechanism on the automobile body, the one end that the automobile body was kept away from to the hoist cable is equipped with fixed establishment, fixed establishment includes the fixing base, the fixing base is the toper, and the main aspects of fixing base is the one end that is close to ground, the tip of fixing base is the one end of keeping away from ground, the tip and the hoist cable fixed connection of fixing base, the equidistant a plurality of chaining that are equipped with on the lateral wall of fixing base, the one end and the fixing base fixed connection of chaining, and the other end fixedly connected with couple of chaining. The present application has the following effects: the fixing mechanism fixes the integral steel structure in multiple directions, so that the integral steel structure is not prone to generating deflection due to gravity center offset when being hoisted, and compared with a single-point fixing mode, the integral steel structure can keep enough stability in the hoisting process, and therefore the integral steel structure is convenient to align with the installation position.

Description

Steel construction lifting device
Technical Field
The application relates to the technical field of mechanical equipment, in particular to steel structure hoisting equipment.
Background
The steel structure building usually relates to the room beam structure of the steel structure when constructing, the shaping mode of the room beam structure of the steel structure can be to hoist each structural component one by one, and fixedly connect each structural component in the high altitude, make each structural component make up and form the mode of the room beam structure; or the method of combining the house beam structure on the ground and hoisting the house beam structure to the top end of the upright post integrally can be realized. Both methods involve hoisting of the steel structure, which is usually done by means of hoisting equipment.
The utility model discloses a chinese utility model patent that grant publication number is CN208814544U discloses a steel construction hoist lifting device, it includes the automobile body and the davit that links to each other with the automobile body is articulated, be provided with the promotion hoist cable that is parallel to each other on the davit and press from both sides tight hoist cable, the tip fixedly connected with hoisting block that promotes the hoist cable, vertical spout has been seted up on the hoisting block, it is provided with the traveller to slide in the spout, the traveller is fixed continuous with pressing from both sides tight hoist cable, it has mutual just right first tong and second tong to articulate on the traveller.
Aiming at the related technologies, the inventor thinks that the center of gravity of the integral steel structure such as a house beam structure is difficult to determine when the integral steel structure is hoisted, the steel structure is easy to be inclined when the hoisting device is used for hoisting the integral steel structure, and the position of the steel structure is difficult to align with the installation position after the integral steel structure is hoisted to a proper position.
SUMMERY OF THE UTILITY MODEL
In order to improve the stationarity of integral steel construction when hoist and mount, this application provides a steel construction lifting device.
The application provides a steel construction lifting device adopts following technical scheme:
the utility model provides a steel construction lifting device, includes that automobile body, one end and automobile body rotate the davit of being connected and drive the davit and carry out pivoted actuating mechanism, be equipped with the hoist cable on the davit, be equipped with hoist mechanism on the automobile body, the hoist cable is close to the one end and the hoist device fixed connection of automobile body, the one end that the automobile body was kept away from to the hoist cable is equipped with fixed establishment, fixed establishment includes the fixing base, the fixing base is the toper, and the main aspects of fixing base is the one end that is close to ground, and the tip of fixing base is the one end of keeping away from ground, the tip and the hoist cable fixed connection of fixing base, equidistant a plurality of chaining that are equipped with on the lateral wall of fixing base, the one end and the fixing base fixed connection of chaining, and the other end fixedly connected with couple of chaining.
Through adopting above-mentioned technical scheme, fixed establishment carries out diversified fixed with integral steel construction to make integral steel construction difficult for producing crooked because of the focus skew when hoist and mount, compare in the fixed mode of single-point, integral steel construction can keep sufficient stationarity at the in-process of hoist and mount, thereby be convenient for align integral steel construction and mounted position.
Optionally, a guide pipe is arranged on the side wall of the fixing seat, the guide pipe is arranged along the axial cross section of the fixing seat, and one end, close to the guide rod, of the hanging chain is arranged in the guide pipe in a penetrating mode.
By adopting the technical scheme, the guide pipe is used for guiding the hanging chains on the side wall of the fixed seat, so that enough space is kept between the hanging chains, the hanging chains are not easy to shake, the hanging chains are not easy to wind and knot, and inconvenience in the preparation process before hoisting is reduced; in addition, in the hoisting process, the chain sling is not easy to cause the integral steel structure to be unstable.
Optionally, the big end of the fixing base is in a hollow tubular shape, a reinforcing rib is arranged between the inner walls of the big end of the fixing base, and the reinforcing rib is located between the two guide pipes on the same axial section of the fixing base.
Through adopting above-mentioned technical scheme for the weight reduction of fixing base to avoid whole overweight the life that causes the hoist cable of fixed establishment to receive the influence, the strengthening rib is used for strengthening the structural strength of fixing base cavity, so that the main aspects of fixing base is difficult for the pressurized deformation.
Optionally, a diagonal brace rib is arranged between the two ends of the reinforcing rib in the length direction and the inner wall of the large end of the fixing base, and the diagonal brace rib is coplanar with the reinforcing rib.
Through adopting above-mentioned technical scheme for the bracing muscle is when strengthening the connection effect between fixing base and the strengthening rib to the fixing base further supports in the department that corresponds of stand pipe, so that the high pressure of stand pipe department is difficult for causing the main aspects of fixing base to take place to warp.
Optionally, an auxiliary diagonal rib is arranged between the diagonal bracing rib and the reinforcing rib.
Through adopting above-mentioned technical scheme, supplementary brace diagonal is used for strengthening the structural strength of brace diagonal to make the bearing capacity of brace diagonal stronger, and then make the holistic structural strength of fixing base strengthen.
Optionally, one end of the suspension arm far away from the crane is provided with a guide wheel, the guide wheel is fixed on the suspension arm through a support, and the guide wheel is provided with a clamping groove for clamping the suspension cable.
Through adopting above-mentioned technical scheme, the leading wheel is used for reducing the frictional resistance of hoist cable when the department that turns to removes to make receiving and releasing of hoist cable more smooth and easy, and prolonged the life of hoist cable.
Optionally, the support is provided with a limiting assembly, the limiting assembly comprises wing plates located at two ends of the guide wheel and a web plate arranged between the two wing plates, the web plate is located at one end, away from the support, of the wing plate, and the wing plates are in butt joint with the side walls of the guide wheel.
Through adopting above-mentioned technical scheme, spacing subassembly is used for the hoist cable spacing in the draw-in groove to make the hoist cable difficult deviate from the draw-in groove of leading wheel, thereby avoid integral steel construction unstable when hoist and mount.
Optionally, the suspension arm is provided with a support lug for limiting the suspension cable, and the suspension cable penetrates through the support lug.
Through adopting above-mentioned technical scheme, the journal stirrup is used for the hoist cable spacing in davit department to when making the hoist equipment receive and release the hoist cable, the hoist cable is difficult for taking place crooked or rocking in davit department, and then makes the hoist and mount of integral steel construction more steady.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the fixing mechanism fixes the integral steel structure in multiple directions, so that the integral steel structure is not prone to being skewed due to gravity center shift during hoisting, and compared with a single-point fixing mode, the integral steel structure can keep enough stability during hoisting, and therefore the integral steel structure can be aligned to the installation position conveniently;
2. by arranging the guide pipe, enough space is kept between the hanging chains, and the hanging chains are not easy to shake, so that the hanging chains are not easy to wind and knot, and inconvenience in the preparation process before hoisting is reduced; in addition, in the hoisting process, the chain sling is not easy to cause the integral steel structure to be unstable.
Drawings
FIG. 1 is a structural schematic diagram of the whole steel structure hoisting equipment in the embodiment of the application;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is a schematic structural view of a fixing mechanism in an embodiment of the present application;
fig. 5 is a sectional view of a fixing mechanism in the embodiment of the present application.
Description of reference numerals: 1. a vehicle body; 11. a hydraulic jack support leg; 2. a suspension arm; 21. a guide wheel; 211. a card slot; 22. a support; 23. a wheel axle; 24. a limiting component; 241. a wing plate; 242. a web; 25. supporting a lug; 3. a drive mechanism; 4. a sling; 5. a hoisting mechanism; 6. a fixing mechanism; 61. a fixed seat; 611. a shackle; 62. hanging a chain; 63. hooking; 64. a guide tube; 65. reinforcing ribs; 651. auxiliary diagonal ribs; 66. obliquely supporting ribs; 7. and (4) hoisting equipment.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses steel construction lifting device. Referring to fig. 1, the steel structure hoisting device includes a vehicle body 1, a boom 2, a driving mechanism 3, a hoist rope 4, a hoisting mechanism 5, and a fixing mechanism 6.
The vehicle body 1 is used as a fixed foundation of the hoisting equipment and is convenient for the hoisting equipment to move. Four corners of the car body 1 are provided with hydraulic jack support legs 11, so that the car body 1 is overhead during hoisting, and the car body 1 is prevented from slipping during hoisting. One end of the boom 2 is hinged to the vehicle body 1 so that the boom 2 can be turned around the hinge point. The suspension arm 2 is a telescopic arm, that is, the suspension arm 2 can be extended or shortened along the axis line direction of the suspension arm 2 under the active operation of a worker, and the rotation of the suspension arm 2 is matched, so that an object to be lifted is lifted to a high place.
The driving mechanism 3 is arranged on the vehicle body 1, the driving mechanism 3 is used for driving the suspension arm 2 to rotate, the driving mechanism 3 can adopt a hydraulic cylinder, and the driving mechanism 3 stretches when being hoisted, so that the change of the angle of the suspension arm 2 can be realized. Be equipped with hoist cable 4 on the davit 2, hoist cable 4 is used for treating the promotion of hoist and mount object, and hoist cable 4 can adopt stainless steel material to make to required structural strength and tensile strength when satisfying the hoist and mount. Be equipped with hoisting equipment 7 on the automobile body 1, hoisting equipment 7 is used for automatic receive and release of hoist cable 4, and hoisting equipment 7 can adopt the hoist engine, and hoist cable 4 is close to the one end and the hoisting equipment 7 fixed connection of automobile body 1, and hoist cable 4 extends along the axial of davit 2 to keep away from the vertical extension of the direction of automobile body 1's one end along being close to ground at davit 2.
Referring to fig. 1 and 2, one end of the boom 2 away from the crane is provided with a guide wheel 21, the guide wheel 21 is fixed on the boom 2 through a support 22, and the support 22 is welded and fixed with the boom 2. The supports 22 are symmetrically arranged at two ends of the guide wheel 21, and one end of the support 22, which is far away from the boom 2, is provided with a wheel shaft 23 penetrating in the axial direction of the guide wheel 21, so that the guide wheel 21 can smoothly rotate on the wheel shaft 23. The side wall of the guide wheel 21 is provided with a clamping groove 211 for clamping the sling 4, and the sling 4 is clamped and matched with the guide wheel 21 at the turning position. When the sling 4 is folded and unfolded, the guide wheel 21 is used for reducing the friction resistance of the sling 4 moving at a turning position, so that the folding and unfolding of the sling 4 are smoother, and the service life of the sling 4 is prolonged.
The support 22 is provided with a limiting component 24. The limiting assembly 24 is used for limiting the sling 4 in the clamping groove 211, so that the sling 4 is not easy to be separated from the clamping groove 211 of the guide wheel 21, and the integral steel structure is prevented from being unstable during hoisting. The spacing assembly 24 includes a wing 241 and a web 242. The wing plates 241 are symmetrically arranged at two ends of the guide wheel 21, and the wheel shaft 23 of the guide wheel 21 is arranged on the wing plates 241 in a penetrating manner, so that the wing plates 241 are fixed on the support 22. The web 242 is disposed between the two wings 241, and the web 242 is located at one end of the wing 241 remote from the support 22. The wing 241 abuts against the side wall of the guide wheel 21, so that the cross section of the wing 241 is in an arc shape adapted to the guide wheel 21.
Referring to fig. 1 and 3, a support lug 25 for limiting the sling 4 is welded and fixed on the suspension arm 2, one end of the support lug 25, which is far away from the suspension arm 2, is annular, the support lug 25 is perpendicular to the side wall of the suspension arm 2, and the sling 4 is arranged at one end of the support lug 25, which is far away from the suspension arm 2 in a penetrating manner. The plurality of support lugs 25 are provided along the axial direction of the boom 2. The support lugs 25 are used for limiting the sling 4 at the position of the suspension arm 2, so that when the hoisting equipment 7 winds and releases the sling 4, the sling 4 is not prone to being inclined or swayed at the position of the suspension arm 2, and hoisting of the integral steel structure is more stable.
Referring to fig. 1 and 4, a fixing mechanism 6 is arranged at one end of the sling 4 far away from the vehicle body 1. The fixing mechanism 6 is used for fixing the integral steel structure, so that the integral steel structure can be lifted when the hoisting device 7 winds the hoisting rope 4. Fixing mechanism 6 includes fixing base 61, and fixing base 61 is the toper, and the main aspects of fixing base 61 is the one end that is close to ground, and the tip of fixing base 61 is the one end of keeping away from ground. The small end of the fixing seat 61 is fixedly connected with the sling 4, and the small end of the fixing seat 61 is provided with a hook ring 611 for connecting and fixing the sling 4. The lateral wall of fixing base 61 is equipped with a plurality of chaining 62 on the equidistant, and the vertical beam of chaining 62 arranges according to the actual weight of steel construction to satisfy and bear the needs. One end of the hanging chain 62 is fixedly connected with the fixed seat 61, and the other end of the hanging chain 62 is fixedly connected with a hook 63. The hanging chain 62 can be made of a steel chain, and two ends of the hanging chain 62 are respectively matched with the fixed seat 61 and the hook 63 in a clamping mode.
The hook 63 is used for hooking the integral steel structure, and the hook 63 is matched with a beam-type component in the integral steel structure in a clamping mode. Fixing mechanism 6 carries out diversified fixed with integral steel construction to make integral steel construction difficult for producing because of the focus skew when hoist and mount, compare in the fixed mode of single-point, the integral steel construction can keep sufficient stationarity at the in-process of hoist and mount, thereby be convenient for align integral steel construction and mounted position.
Referring to fig. 4 and 5, a guide tube 64 is welded and fixed to a side wall of the fixed base 61, the guide tube 64 is arranged along an axial section of the fixed base 61, and the guide tube 64 is provided in plurality at equal intervals along a circumferential direction of the fixed base 61. The guide tubes 64 correspond to the hanging chains 62 one by one, and one end of each hanging chain 62 close to each guide tube 64 is arranged in each guide tube 64 in a penetrating mode. The guide pipe 64 is used for guiding the hanging chains 62 on the side wall of the fixed seat 61, so that enough space is kept between the hanging chains 62, and the hanging chains 62 are not easy to shake, further the hanging chains 62 are not easy to wind and knot, and inconvenience in the preparation process before hoisting is reduced; in addition, in the hoisting process, the chain sling is not easy to cause the integral steel structure to be unstable.
The big end of the fixing seat 61 is in a hollow tubular shape, so that the weight of the fixing seat 61 is reduced, and the influence on the service life of the sling 4 caused by the overweight of the fixing mechanism 6 is avoided. Be equipped with strengthening rib 65 between the inner wall of fixing base 61 main aspects, strengthening rib 65 can adopt stainless steel shaped steel to make, welded fastening between strengthening rib 65 and the fixing base 61, and strengthening rib 65 is located between two stand pipes 64 of the same axial cross-section of fixing base 61. The reinforcing rib 65 is used for enhancing the structural strength of the hollow part of the fixing base 61, so that the large end of the fixing base 61 is not easy to deform under pressure.
And inclined supporting ribs 66 are arranged between the two ends of the reinforcing rib 65 in the length direction and the inner wall of the large end of the fixed seat 61. The diagonal brace rib 66 is made of profile steel which is the same as the reinforcing rib 65 in material and size, and the diagonal brace rib 66 is welded and fixed with the fixing seat 61 and the diagonal brace rib 66. Bracing muscle 66 and strengthening rib 65 coplane to it is corresponding to make bracing muscle 66 and stand pipe 64's position, thereby makes bracing muscle 66 when strengthening the connection effect between fixing base 61 and the strengthening rib 65, further supports fixing base 61 in the department that corresponds of stand pipe 64, so that the high pressure of stand pipe 64 department is difficult for causing the main aspects of fixing base 61 to take place to warp.
An auxiliary diagonal rib 651 is provided between the diagonal brace rib 66 and the reinforcing rib 65. The auxiliary diagonal rib 651 is made of profile steel which is the same as the reinforcing rib 65 or the diagonal bracing rib 66 in material and size, and the auxiliary diagonal rib 651 is welded and fixed with the reinforcing rib 65 and the diagonal bracing rib 66. The auxiliary diagonal rib 651 is used for enhancing the structural strength of the diagonal bracing rib 66, so that the bearing capacity of the diagonal bracing rib 66 is stronger, and further the overall structural strength of the fixing seat 61 is enhanced.
The implementation principle of the steel structure hoisting equipment in the embodiment of the application is as follows: before the integral steel structure is hoisted, the integral steel structure is machined and formed on the ground, the vehicle body 1 is driven to move to one end of the integral steel structure, then the hydraulic jack support legs 11 on the periphery of the vehicle body 1 are driven to make the vehicle body 1 overhead, then the suspension arm 2 is driven to rotate through the driving mechanism 3, the suspension arm 2 is further driven to extend, the fixing mechanism 6 is located in the middle of the integral steel structure, then the hoisting mechanism 5 is driven to put down the fixing mechanism 6 from the upper side of the integral steel structure, then the hooks 63 on the fixing seat 61 are clamped on a beam member of the integral steel structure, the chains 62 are uniformly distributed at equal intervals along the circumferential direction of the fixing seat 61 during clamping, then the hoisting mechanism 5 is driven to lift the fixing mechanism 6, and the fixing mechanism 6 is driven to hoist the integral steel structure. Fixing mechanism 6 carries out diversified fixed with integral steel construction to make integral steel construction difficult for producing because of the focus skew when hoist and mount, compare in the fixed mode of single-point, the integral steel construction can keep sufficient stationarity at the in-process of hoist and mount, thereby be convenient for align integral steel construction and mounted position.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a steel construction lifting device, includes that automobile body (1), one end rotate davit (2) and drive davit (2) of being connected with automobile body (1) and carry out pivoted actuating mechanism (3), be equipped with hoist cable (4) on davit (2), be equipped with hoist mechanism (5) on automobile body (1), hoist cable (4) are close to the one end and hoist device (7) fixed connection of automobile body (1), its characterized in that: the one end that automobile body (1) was kept away from in hoist cable (4) is equipped with fixed establishment (6), fixed establishment (6) are including fixing base (61), fixing base (61) are the toper, and the main aspects of fixing base (61) are for the one end that is close to ground, and the tip of fixing base (61) is for keeping away from the one end on ground, the tip and hoist cable (4) fixed connection of fixing base (61), equidistant a plurality of chaining (62) that are equipped with on the lateral wall of fixing base (61), the one end and fixing base (61) fixed connection of chaining (62), and the other end fixedly connected with couple (63) of chaining (62).
2. The steel structure hoisting equipment of claim 1, wherein: be equipped with stand pipe (64) on the lateral wall of fixing base (61), stand pipe (64) are arranged along the axial cross-section of fixing base (61), the one end that chaining (62) is close to the guide bar is worn to establish in stand pipe (64).
3. The steel structure hoisting equipment of claim 2, wherein: the big end of fixing base (61) is hollow tubulose, and is equipped with strengthening rib (65) between the inner wall of fixing base (61) big end, strengthening rib (65) are located between two stand pipes (64) of the same axial cross-section of fixing base (61).
4. The steel structure hoisting equipment of claim 3, wherein: all be equipped with between the inner wall of strengthening rib (65) length direction's both ends and fixing base (61) main aspects bracing muscle (66), bracing muscle (66) and strengthening rib (65) coplane.
5. The steel structure hoisting equipment of claim 4, wherein: an auxiliary inclined rib (651) is arranged between the inclined supporting rib (66) and the reinforcing rib (65).
6. The steel structure hoisting equipment of claim 1, wherein: one end of the suspension arm (2) far away from the crane is provided with a guide wheel (21), the guide wheel (21) is fixed on the suspension arm (2) through a support (22), and a clamping groove (211) for clamping the suspension cable (4) is formed in the guide wheel (21).
7. The steel structure hoisting equipment of claim 6, wherein: be equipped with spacing subassembly (24) on support (22), spacing subassembly (24) are including pterygoid lamina (241) that are located leading wheel (21) both ends and web (242) of establishing between two pterygoid laminas (241), web (242) are located pterygoid lamina (241) and keep away from the one end of support (22), and pterygoid lamina (241) and the lateral wall looks butt of leading wheel (21).
8. The steel structure hoisting equipment of claim 1, wherein: the suspension arm (2) is provided with a support lug (25) for limiting the suspension cable (4), and the suspension cable (4) penetrates through the support lug (25).
CN202023124940.1U 2020-12-22 2020-12-22 Steel construction lifting device Active CN214359909U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023124940.1U CN214359909U (en) 2020-12-22 2020-12-22 Steel construction lifting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023124940.1U CN214359909U (en) 2020-12-22 2020-12-22 Steel construction lifting device

Publications (1)

Publication Number Publication Date
CN214359909U true CN214359909U (en) 2021-10-08

Family

ID=77987585

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023124940.1U Active CN214359909U (en) 2020-12-22 2020-12-22 Steel construction lifting device

Country Status (1)

Country Link
CN (1) CN214359909U (en)

Similar Documents

Publication Publication Date Title
EP2256078B1 (en) Folding jib strut
CN105110213A (en) Crane provided with counterweight balance mechanism adopting dead weight of hoisted object as well as crane transformation scheme
CN116395578A (en) Erection method and erection device of power transmission tower
CN201301180Y (en) Super-lifting gear for telescopic booms and telescopic boom crane
CN102303821A (en) Luffing tower crane with balanced type suspension arm based on traction luffing of steel rope
CN202296907U (en) Suspension arm balanced movable arm tower crane capable of luffing based on steel rope traction
CN220787793U (en) Automatic push-up type U-shaped beam hoisting frame
CN220223242U (en) Prefabricated box girder steel reinforcement skeleton lifting appliance
CN214359909U (en) Steel construction lifting device
CN212712478U (en) Dismounting device for cargo boom and balance arm of tower crane
CN205590168U (en) Overturning lifting device
CN212292588U (en) Foldable introduction mechanism
CN212559207U (en) Bridge floor crane
CN210480628U (en) Rotatory hoist of two-way self-balancing
CN110921532A (en) Lifting structure and crane
CN113585860A (en) Device and method for mounting and dismounting double-arm holding pole
CN212769515U (en) Engine folding crane with good stability
CN212893604U (en) Cargo boom and balance arm integrated root section structure of flat-top tower crane
CN211470607U (en) Lifting structure and crane
CN219058352U (en) Roof crane
CN111960297B (en) Liftable mast device of tower crane
CN216426495U (en) Hoist and mount compensating beam
CN220976398U (en) Movable luffing fixing device of movable arm type tower crane
CN219469634U (en) Simple and easy convenient many pipe fittings automatic lifting device
CN220745086U (en) Lifting appliance for prefabricated wallboard

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant