CN116022642A - Folding door frame lifting device - Google Patents

Abstract

The application discloses a folding door frame lifting device, which comprises a folding door frame and a lifting device; the folding portal frame comprises a frame, a frame overturning mechanism, a plurality of supporting legs and a supporting leg rotating mechanism; the frame is formed by splicing two fixed beams and two folding beams, the folding beams are parallel to each other, and each folding beam comprises a first supporting beam and a second supporting beam which are hinged with each other; the frame overturning mechanism is used for providing power to enable the first support beam and the second support beam to be mutually folded or unfolded; the support leg is hinged with the frame, and the support leg rotating mechanism is used for providing power to rotate the support leg; the lifting device is arranged on the folding portal frame and used for lifting operation. The folding gantry crane provided by the application can be conveniently and rapidly contracted and transported when the gantry crane needs to be transferred, the problem that the conventional gantry crane is fixed in operation place and difficult to transfer is solved, and the folding gantry crane can be automatically unfolded for operation after being transported to the field, so that the environmental adaptability is strong.

Description

Folding door frame lifting device

Technical Field

The application relates to the technical field of lifting equipment, in particular to a folding door frame lifting device.

Background

Gantry cranes (including gantry cranes) are widely used for hoisting and moving operations of goods distribution areas such as factories, wharfs and the like. The common portal crane mainly moves by paving a preset track on the ground, generally works in a fixed field range, cannot realize transition work, and is very troublesome in process unless being reinstalled, disassembled and assembled. When the use area is large and cargoes are scattered, a plurality of devices are needed to be put into, the fund input is large, and the use rate is low.

How to conveniently and rapidly realize the transition operation of the portal crane is a technical problem to be solved urgently by the person skilled in the art.

Disclosure of Invention

To solve the above-mentioned problems, a first object of the present invention is to provide a folding door frame lifting device; the folding gantry crane provided by the application can be conveniently and rapidly contracted and transported when the gantry crane needs to be transferred, the problem that the conventional gantry crane is fixed in operation place and difficult to transfer is solved, and the folding gantry crane can be automatically unfolded for operation after being transported to the field, so that the environmental adaptability is strong.

The technical scheme provided by the invention is as follows:

a folding door frame lifting device comprises a folding door frame and a lifting device;

the folding portal frame comprises a frame, a frame overturning mechanism, a plurality of supporting legs and a supporting leg rotating mechanism;

the frame is formed by splicing two fixed beams and two folding beams, the folding beams are parallel to each other, and each folding beam comprises a first supporting beam and a second supporting beam which are hinged with each other;

the frame overturning mechanism is used for providing power to enable the first support beam and the second support beam to be mutually folded or unfolded;

the support leg is hinged with the frame, and the support leg rotating mechanism is used for providing power to rotate the support leg;

the lifting device is arranged on the folding portal frame and used for lifting operation.

Preferably, the frame overturning mechanism comprises an overturning power source, a first connecting rod and a second connecting rod;

one end of the first connecting rod is hinged with the first supporting beam, the other end of the first connecting rod is hinged with the second connecting rod at a hinge point A, and the other end of the second connecting rod is hinged with the second supporting beam;

one end of the overturning power source is hinged with the first connecting rod and the second connecting rod at a hinge point A, and the other end of the overturning power source is hinged with the fixed beam.

Preferably, each supporting leg is provided with a supporting leg rotating mechanism, one end of the supporting leg rotating mechanism is hinged with the supporting leg, and the other end of the supporting leg rotating mechanism is hinged with the fixed beam.

Preferably, the landing leg comprises a basic section, an expansion joint and a landing leg expansion mechanism, wherein the basic section is sleeved on the periphery of the expansion joint, and the expansion joint expands and contracts relative to the basic section under the driving of the landing leg expansion mechanism;

the supporting leg rotating mechanism is hinged with the outer wall of the basic section.

Preferably, the lifting device comprises a movable trolley, a lifting mechanism, a movable trolley frame, a first translation mechanism and a second translation mechanism,

the lifting mechanism is arranged on the movable trolley and is used for lifting operation;

the movable trolley is slidably arranged in the movable trolley frame, and the first translation mechanism is used for providing power to drive the movable trolley to move along the X axis;

the movable trolley frame is slidably arranged in the frame, and the second translation mechanism is used for driving the movable trolley frame to move along the Y axis; and the X-axis is perpendicular to the Y-axis.

Preferably, rollers are arranged at two ends of the movable trolley frame, and the frame is provided with matched track grooves; and/or the number of the groups of groups,

the movable trolley is provided with wheels which roll on the movable trolley frame.

Preferably, the frame is provided with 4 folding beams, two folding beams form a group, each group is respectively provided with 1-2 lifting devices, and the track grooves are formed in the folding beams.

Preferably, the frame turnover mechanism is provided with two and is arranged on two folding beams positioned in the middle.

Preferably, the hoisting mechanism comprises a steel wire rope, a fixed pulley, a movable pulley and a hoisting power mechanism, wherein the movable pulley is arranged at the power output end of the hoisting power mechanism and is close to or far from the fixed pulley;

the steel wire rope is wound around the peripheries of the fixed pulley and the movable pulley, and is provided with a lifting appliance, and an object is lifted or put down along with the movement of the movable pulley.

Preferably, the spreader is detachably connected with the wire rope.

The utility model provides a problem to prior art exists, this application provides a folding door frame hoisting device, including folding portal and hoisting accessory, wherein folding portal is jack-up bearing mechanism, and hoisting accessory then is hoist and mount operating mechanism, and the main use object jack-up is transported. The folding portal frame comprises a frame, a frame turnover mechanism, a plurality of supporting legs and a supporting leg rotating mechanism, and the frame turnover mechanism is utilized to enable the first supporting beam and the second supporting beam of the folding beam to be folded, so that the occupied area of the frame can be reduced by half; the landing leg rotating mechanism is used for enabling the landing leg to rotate, the landing leg is folded, so that the folding type gantry crane is convenient and quick to retract and transport when required to be transferred, the problem that a conventional portal crane is fixed in a working place and difficult to transfer is solved, and the folding type gantry crane can be automatically unfolded for operation after being transported to the field, so that the folding type gantry crane is strong in environmental adaptability.

In addition, the existing high-risk articles such as field explosive substances are mainly used for carrying out operation by using an automobile crane, the safety of the transfer operation is low, and the high-risk articles are easy to tip over when in overload or unbalanced load. The folding portal lifting device provided by the invention has a moving operation function and is stable in transfer operation. In addition, after the folding type door frame lifting device is unfolded, tarpaulin is wrapped on the periphery of the folding type door frame lifting device and can be used as a field repair shelter for repairing and maintaining a damaged vehicle.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a folding door frame jack (unfolded state) according to an embodiment of the present invention;

FIG. 2 is a schematic view of a folding door frame jack (folded state) according to an embodiment of the present invention;

FIG. 3 is a schematic view of a folding portal in accordance with an embodiment of the present invention;

FIG. 4 is a schematic side view of a frame (partially folded, where A and B represent hinge points A and B, respectively) according to an embodiment of the invention;

FIG. 5 is a schematic diagram illustrating another side view of a frame according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a leg structure according to an embodiment of the present invention;

FIG. 7 is a schematic view of a folding door frame jack (with the telescopic sections of the legs retracted) according to an embodiment of the present invention;

FIG. 8 is a schematic top view of a folding door frame jack (legs fully retracted) in accordance with an embodiment of the present invention;

FIG. 9 is a schematic top view of a folding door frame lifting device in accordance with an embodiment of the present invention;

FIG. 10 is a schematic view of the cooperation of the rollers of the travelling trolley frame with the track grooves in the lifting device according to the embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view of a lifting device (a movable pulley is driven by a lifting power mechanism to extend and retract) according to an embodiment of the invention;

FIG. 12 is a schematic cross-sectional view of a lifting device (a movable pulley is driven by a lifting power mechanism to stretch and retract, and S1 and S2 are two positions of a dropped article) according to an embodiment of the invention;

FIG. 13 is a diagram showing a step of transferring a folding gantry crane using a transporter in accordance with an embodiment of the present invention;

FIG. 14 is a second step of transferring a folding gantry crane using a transporter in accordance with an embodiment of the present invention;

FIG. 15 is a third step of transferring a folding gantry crane using a transporter in accordance with an embodiment of the present invention;

FIG. 16 is a fourth step of transferring a folding gantry crane using a transporter in accordance with an embodiment of the present invention;

FIG. 17 is a diagram of a fourth step (another angle) of transferring a folding gantry crane using a transporter in an embodiment of the present invention;

reference numerals: 1-folding a portal; 11-a frame; 111-fixing beams; 112-folding the beam; 1121-a first corbel; 1122-a second corbel; 113-track grooves; 12-a frame turnover mechanism; 121-a turnover power source; 122-a first link; 123-a second link; 13-supporting legs; 131-basic section; 132-telescopic joint; 133-leg telescoping mechanism; 14-a leg rotation mechanism; 2-a hoisting device; 21-a mobile trolley; 22-a hoisting mechanism; 221-a steel wire rope; 222-fixed pulley; 223-moving a pulley; 224-hoisting power mechanism; 23-moving the trolley frame; 231-rollers; 24-a first translation mechanism; 25-a second translation mechanism.

Detailed Description

In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" or "a number" is two or more, unless explicitly defined otherwise.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the scope of the present disclosure, since any structural modifications, proportional changes, or dimensional adjustments made by those skilled in the art should not be made in the present disclosure without affecting the efficacy or achievement of the present disclosure.

As shown in the figure, the embodiment of the invention provides a folding door frame lifting device, which comprises a folding door frame 1 and a lifting device 2;

the folding portal 1 comprises a frame 11, a frame turnover mechanism 12, a plurality of supporting legs 13 and a supporting leg rotating mechanism 14;

the frame 11 is formed by splicing two fixed beams 111 and two folding beams 112, the folding beams 112 are parallel to each other, and each folding beam comprises a first support beam 1121 and a second support beam 1122 which are hinged with each other;

the frame turnover mechanism 12 is used for providing power to enable the first support beam 1121 and the second support beam 1122 to be mutually folded or unfolded;

the supporting leg 13 is hinged with the frame 11, and the supporting leg rotating mechanism 14 is used for providing power to rotate the supporting leg 13;

the lifting device 2 is arranged on the folding portal frame 1 and is used for lifting operation.

The utility model provides a folding door frame hoisting device to the problem that prior art exists, this application provides a folding door frame hoisting device, including folding door frame 1 and hoisting accessory 2, wherein folding door frame 1 is jack-up bearing mechanism, and hoisting accessory 2 then is hoist and mount operating mechanism, mainly used object jack-up is transported. The folding portal 1 comprises a frame 11, a frame turnover mechanism 12, a plurality of supporting legs 13 and a supporting leg rotating mechanism 14, and the frame turnover mechanism 12 is utilized to fold a first supporting beam 1121 and a second supporting beam 1122 of the folding beam, so that the occupied area of the frame 11 can be reduced by half; the landing leg 13 is rotated through the landing leg rotating mechanism 14, and the landing leg is retracted, so that the folding type gantry crane can be conveniently and rapidly contracted and transported when the folding type gantry crane needs to be transferred, the problem that the conventional gantry crane is fixed in a working place and difficult to transfer is solved, and the folding type gantry crane can be automatically unfolded for operation after being transported to the field, and has strong environmental adaptability.

In addition, the existing high-risk articles such as field explosive substances are mainly used for carrying out operation by using an automobile crane, the safety of the transfer operation is low, and the high-risk articles are easy to tip over when in overload or unbalanced load. The folding portal lifting device provided by the invention has a moving operation function and is stable in transfer operation. In addition, after the folding type door frame lifting device is unfolded, tarpaulin is wrapped on the periphery of the folding type door frame lifting device and can be used as a field repair shelter for repairing and maintaining a damaged vehicle.

The legs 13 are preferably provided with four, six or more.

Preferably, the frame tilting mechanism 12 includes a tilting power source 121, a first link 122, and a second link 123;

one end of the first connecting rod 122 is hinged with the first supporting beam 1121, the other end of the first connecting rod is hinged with the second connecting rod 123 at a hinge point A, and the other end of the second connecting rod 123 is hinged with the second supporting beam 1122;

one end of the overturning power source 121 is hinged to the first link 122 and the second link 123 at a hinge point a, and the other end is hinged to the fixed beam 111.

Preferably, the frame turnover mechanism 12 includes a turnover power source 121, a first link 122 and a second link 123, one ends of the first link 122 and the second link 123 are hinged to each other (the hinge point is named as a hinge point a), and the other ends are hinged to a first support beam 1121 and a second support beam 1122, respectively; meanwhile, one end of the overturning power source 121 is hinged with the fixed beam 111, and the other end of the overturning power source is hinged with a hinge point A. The overturning power source 121 works to enable the power output end of the overturning power source 121 to extend, the distance between the two ends of the overturning power source 121 is increased, so that the first connecting rod 122 and the second connecting rod 123 are pushed to move, power is transmitted through a quadrilateral connecting rod mechanism formed by the first connecting rod 122, the second connecting rod 123, the first supporting beam 1121 and the second supporting beam 1122, the second supporting beam 1122 rotates around the hinging point (named hinging point B) between the second supporting beam 1122 and the first supporting beam 1121, and the folding frame is unfolded; conversely, the power take-off of the roll-over power source 121 is retracted, allowing the folding frame to be folded together.

The roll power source 121 preferably uses a cylinder. The cylinder barrel earring of the oil cylinder can be hinged with the fixed beam 111 during installation, and the piston rod earring of the oil cylinder is hinged with the hinge point A.

Preferably, each leg 13 is provided with a leg rotation mechanism 14, and one end of the leg rotation mechanism 14 is hinged to the leg 13 and the other end is hinged to the fixed beam 111.

One leg rotation mechanism 14 may be provided to control rotation of the plurality of legs 13, or may be provided separately. Preferably, each leg 13 is rotated by a correspondingly arranged leg rotation mechanism 14. The leg 13 itself is hinged to the frame 11, while one end of the leg rotation mechanism 14 is hinged to the leg 13 and the other end is hinged to the fixed beam 111, so that the leg rotation mechanism 14 is extended or shortened and can push or pull the leg 13 to rotate around its hinge point hinged to the fixed beam 111.

The leg rotating mechanism 14 preferably uses an oil cylinder, the cylinder end of which is hinged with the fixed beam 111, and the piston rod end is hinged with the leg 13.

Preferably, the supporting leg 13 comprises a basic section 131, an expansion section 132 and a supporting leg expansion mechanism 133, wherein the basic section 131 is sleeved on the periphery of the expansion section 132, and the expansion section 132 expands and contracts relative to the basic section 131 under the driving of the supporting leg expansion mechanism 133;

the leg rotation mechanism 14 is hinged to the outer wall of the base section 131.

The legs 13 are preferably telescopic, so that a higher working height can be provided when the legs are unfolded, and the occupied space can be kept small when the legs are contracted; through the height adjustment, the problem of fixed operation range of the conventional portal crane can be solved, and the portal crane has more flexibility. Specifically, the leg 13 includes a base section 131, an expansion section 132, and a leg expansion mechanism 133, the base section 131 is sleeved on the outer periphery of the expansion section 132, and the expansion section 132 expands and contracts relative to the base section 131 under the driving of the leg expansion mechanism 133. The leg telescoping mechanism 133 may be a cylinder and is disposed within the base section 131 and the telescoping section 132.

When the support leg 13 is telescopic, the support leg rotating mechanism 14 is hinged with the outer wall of the basic section 131, so that the expansion and contraction of the support leg 13 does not affect the operation of the support leg rotating mechanism 14.

Preferably, the lifting device 2 comprises a travelling trolley 21, a lifting mechanism 22, a travelling trolley frame 23, a first translation mechanism 24 and a second translation mechanism 25,

the lifting mechanism 22 is arranged on the mobile trolley 21 and is used for lifting operation;

the movable trolley 21 is slidably arranged in the movable trolley frame 23, and the first translation mechanism 24 is used for providing power to drive the movable trolley 21 to move along the X axis;

the movable trolley frame 23 is slidably arranged in the frame 11, and the second translation mechanism 25 is used for driving the movable trolley frame 23 to move along the Y axis; and the X-axis is perpendicular to the Y-axis.

By slidably arranging the travelling carriage 21 in the travelling carriage frame 23 and translating it under the drive of the first translation mechanism 24, the transverse span of the entire gantry crane can be adjusted. The movement of the travelling carriage 23 in the frame 11 then effects translation of the hoisted object.

The utility model provides a folding door frame hoisting device, hoisting accessory 2 remove in the plane that X axle and Y axle are constituteed, realize through travelling car 21, hoisting mechanism 22, travelling car frame 23, first translation mechanism 24 and second translation mechanism 25.

Specifically, the travelling car 21 moves in the travelling car frame 23, and the motive power for the movement is provided by the first translation mechanism 24; the whole of the travelling carriage 23 together with the travelling carriage 21 is movable within the frame 11, the motive power for the movement being provided by a second translation mechanism 25. By setting the moving direction of the traveling carriage 21 to be perpendicular to the moving direction of the traveling carriage 23, the traveling carriage 21 can be moved in a plane, so that the hoisting mechanism 22 on the traveling carriage 21 can be moved in a plane, and the hoisting operation can be performed at each position.

Preferably, the two ends of the movable trolley frame 23 are provided with rollers 231, and the frame 11 is provided with matched track grooves 113; and/or the number of the groups of groups,

the travelling car 21 is provided with wheels which roll on travelling carriages 23.

The movement of the mobile trolley 23 is preferably achieved by means of the cooperation of the rollers 231 with the rail grooves 113. Specifically, the rollers 231 are disposed at two ends of the moving trolley frame 23, and the matched track grooves 113 are disposed on the frame 11, and the rollers 231 are embedded into the track grooves 113, so that the moving trolley can roll flexibly and can avoid falling off.

The moving trolley 21 can move in the moving trolley frame 23 by arranging wheels to be matched with the moving trolley frame 23.

The first translation mechanism 24 and the second translation mechanism 25 can use oil cylinders, and movement is realized through oil cylinder expansion and contraction.

Preferably, the frame 11 is provided with 4 folding beams 112, two folding beams 112 forming a group, each group being provided with 1-2 hoisting means 2, respectively, and the track grooves 113 are provided on the folding beams 112.

More preferably, the frame 11 is provided with 4 folding beams 112, two folding beams 112 form a group, each group is provided with 1-2 hoisting devices 2, respectively, and the track grooves 113 are provided on the folding beams 112. The folding type gantry lifting device provided by the application is provided with two or four lifting devices 2, and can be used respectively or combined, so that the problem that the conventional gantry crane is single in operation and frequently swings when lifting a long object is solved, and the folding type gantry lifting device is more flexible.

Preferably, the frame turnover mechanism 12 is provided in two and is provided on two folding beams 112 located in the middle.

Preferably, the frame turnover mechanism 12 is provided with two, and is respectively provided on two of the four folding beams 112 located in the middle. The two ends of the two folded beams 112 positioned at the outer side are fixedly connected with the two ends of the two fixed beams 111 to form a square frame shape. The four folding beams 112 can bear a plurality of lifting devices 2 for operation on one hand, and can realize a multi-pivot portal bearing structure on the other hand, the longitudinal span is large, the lifting operation is more stable than that of a conventional portal crane, and the unbalanced loading and the tipping prevention can be effectively prevented.

Preferably, the hoisting mechanism 22 comprises a steel wire rope 221, a fixed pulley 222, a movable pulley 223 and a hoisting power mechanism 224, wherein the movable pulley 223 is arranged at the power output end of the hoisting power mechanism 224 and is close to or far from the fixed pulley 222;

the wire rope 221 is wound around the outer circumferences of the fixed pulley 222 and the movable pulley 223, and the wire rope 221 is provided with a hanger to lift or lower an object with the movement of the movable pulley 223.

Preferably, the hoisting mechanism 22 comprises a wire rope 221, a fixed pulley 222, a movable pulley 223 and a hoisting power mechanism 224, and the hoisting power mechanism 224 stretches and contracts to increase or shorten the distance between the movable pulley 223 and the fixed pulley 222, so that the wire rope 221 is pulled or loosened, and the portion of the wire rope 221 (i.e. the portion provided with the hoisting tool) is moved upwards or downwards to hoist or lower an object.

The lifting power mechanism 224 may be an oil cylinder, the fixed pulley 222 is disposed at one end of the cylinder barrel, and the movable pulley 223 is disposed at one end of the piston rod. The power of the lifting can also be transmitted using a screw or other means.

Preferably, the spreader is detachably connected with the wire rope 221.

The preferential sling is detachably connected with the steel wire rope 221, so that different special slings can be replaced according to different working condition requirements.

The folding door frame lifting device provided by the application uses a transport vehicle to transfer the field as follows:

1) The carrier vehicle moves to below the folding door frame lifting device and below the first support beams 1121, and a plane formed by a plurality of first support beams 1121 is supported by the carrier vehicle. As shown in fig. 13.

2) Then, the supporting leg telescopic mechanism 133 on one side of the second supporting beam 1122 is started, and the supporting leg on one side of the second supporting beam 1122 is retracted; if the leg 13 is telescoping, the leg telescoping mechanism 133 is actuated to shorten the leg 13 either before or while retracting the leg. Thereafter, the frame tilting mechanism 12 is activated to bring the fixed beams of the plurality of second support beams communicating with the side together to rotate about the hinge point B, folding the portion over the first support beam 1121. As shown in fig. 14.

3) The legs at the side of the first corbel are gradually retracted at this time, as shown in fig. 15.

4) The leg telescoping mechanism 133 on the side of the first support beam 1121 is started to retract the leg 13 near the side of the first support beam 1121, if the leg 13 is telescopic, the leg telescoping mechanism 133 is started to shorten the leg 13 before or at the same time as the leg is retracted. At this time, the whole folding door frame lifting device is folded and positioned on the transport vehicle to form a transport state. As shown in fig. 16; another angular view is shown in fig. 17.

After reaching the destination, the folding door frame lifting device provided by the application can be automatically unloaded and unfolded into an operation state.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The folding door frame lifting device is characterized by comprising a folding door frame (1) and a lifting device (2);

the folding portal (1) comprises a frame (11), a frame overturning mechanism (12), a plurality of supporting legs (13) and a supporting leg rotating mechanism (14);

the frame (11) is formed by splicing two fixed beams (111) and two folding beams (112), the folding beams (112) are parallel to each other, and each folding beam comprises a first supporting beam (1121) and a second supporting beam (1122) which are hinged with each other;

the frame overturning mechanism (12) is used for providing power to enable the first support beam (1121) and the second support beam (1122) to be mutually folded or unfolded;

the support leg (13) is hinged with the frame (11), and the support leg rotating mechanism (14) is used for providing power to rotate the support leg (13);

the lifting device (2) is arranged on the folding portal frame (1) and is used for lifting operation.

2. The folding door frame lifting device according to claim 1, wherein the frame tilting mechanism (12) includes a tilting power source (121), a first link (122), and a second link (123);

one end of the first connecting rod (122) is hinged with the first supporting beam (1121), the other end of the first connecting rod is hinged with the second connecting rod (123) at a hinge point A, and the other end of the second connecting rod (123) is hinged with the second supporting beam (1122);

one end of the overturning power source (121) is hinged with the first connecting rod (122) and the second connecting rod (123) at a hinge point A, and the other end of the overturning power source is hinged with the fixed beam (111).

3. A folding door frame lifting device according to claim 1, characterized in that each leg (13) is provided with a leg rotation mechanism (14), one end of the leg rotation mechanism (14) being hinged to the leg (13) and the other end being hinged to the fixed beam (111).

4. A folding door frame lifting device according to claim 3, characterized in that the supporting leg (13) comprises a basic section (131), an expansion joint (132) and a supporting leg expansion mechanism (133), the basic section (131) is sleeved on the periphery of the expansion joint (132), and the expansion joint (132) expands and contracts relative to the basic section (131) under the driving of the supporting leg expansion mechanism (133);

the supporting leg rotating mechanism (14) is hinged with the outer wall of the basic section (131).

5. The folding door frame lifting device according to claim 1, characterized in that the lifting device (2) comprises a travelling trolley (21), a lifting mechanism (22), a travelling trolley frame (23), a first translation mechanism (24) and a second translation mechanism (25),

the lifting mechanism (22) is arranged on the mobile trolley (21) and is used for lifting operation;

the movable trolley (21) is slidably arranged in the movable trolley frame (23), and the first translation mechanism (24) is used for providing power to drive the movable trolley (21) to move along the X axis;

the movable trolley frame (23) is slidably arranged in the frame (11), and the second translation mechanism (25) is used for driving the movable trolley frame (23) to move along the Y axis; and the X-axis is perpendicular to the Y-axis.

6. The folding door frame lifting device according to claim 5, characterized in that rollers (231) are arranged at both ends of the moving trolley frame (23), and the frame (11) is provided with matched track grooves (113); and/or the number of the groups of groups,

the travelling car (21) is provided with wheels which roll on a travelling car frame (23).

7. The folding door frame lifting device according to claim 6, characterized in that the frame (11) is provided with 4 folding beams (112), two folding beams (112) forming a group, each group being provided with 1-2 lifting means (2), respectively, and the track grooves (113) are provided on the folding beams (112).

8. The folding door frame lifting device according to claim 7, characterized in that the frame tilting mechanism (12) is provided in two and is provided on two folding beams (112) located in the middle.

9. The lifting device of the folding door frame according to claim 5, wherein the lifting mechanism (22) comprises a steel wire rope (221), a fixed pulley (222), a movable pulley (223) and a lifting power mechanism (224), and the movable pulley (223) is arranged at a power output end of the lifting power mechanism (224) and is mutually close to or far from the fixed pulley (222);

the steel wire rope (221) is wound on the peripheries of the fixed pulley (222) and the movable pulley (223), and the steel wire rope (221) is provided with a lifting appliance, so that an object is lifted or put down along with the movement of the movable pulley (223).

10. The folding door frame lifting device according to claim 9, characterized in that the lifting appliance is detachably connected with the wire rope (221).

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