CN210480565U

CN210480565U - Telescopic hoisting mechanism

Info

Publication number: CN210480565U
Application number: CN201920950096.6U
Authority: CN
Inventors: 杨士珏; 朱秀才; 张鑫; 马兰兰; 潘珠; 叶辉; 苏明生
Original assignee: KINGBIRD CONSTRUCTION GROUP CO Ltd
Current assignee: Ping An Construction Group Co.,Ltd.
Priority date: 2019-06-22
Filing date: 2019-06-22
Publication date: 2020-05-08
Anticipated expiration: 2029-06-22

Abstract

The utility model discloses a telescopic hoisting mechanism, including the square main hoisting frame that the top surface is equipped with the jack-up hanging point, the bottom surface is equipped with multiunit heavy object hanging point, respectively from the first flexible gallows and the second flexible gallows that set up in the main hoisting frame of both sides cover of main hoisting frame, lie in the transmission shaft of main hoisting frame center, the axle sleeve of cover locating on the transmission shaft, the first movable assembly that is used for connecting axle sleeve and first flexible gallows, and the second movable assembly that is used for connecting axle sleeve and second flexible gallows, first flexible gallows and second flexible gallows symmetry set up; when the transmission shaft rotates in the circumferential direction, the shaft sleeve translates along the transmission shaft, and the first telescopic hanging bracket and the second telescopic hanging bracket are pushed to synchronously translate to be close to or far away from through the first movable assembly and the second movable assembly. The utility model can adapt to pc components with different lengths and volumes, and has high use flexibility; through the matching of the screw rod, the two shaft sleeves and the four groups of movable assemblies, the structure is simple, the matching is stable, and the moving speed is adjustable; the whole weight is light, and the manufacturing cost is relatively low.

Description

Telescopic hoisting mechanism

Technical Field

The utility model belongs to the building field especially relates to a telescopic hoisting machine constructs.

Background

Along with the continuous promotion of novel building industrialization at home, PC (concrete prefabricated component) prefabricated building occupation volume also is the explosive growth year by year, the weight of PC component, the size presents bigger and bigger trend, a lot of PC component hoisting points set up more, the geometric dimension is also great, conventional hanging beam and hanging frame can't adapt to the needs of super large-scale PC component hoist and mount, but increase the length of current hanging beam and hanging frame and can lead to the increase of cost again to and the increase of the volume of hanging beam and hanging frame, bring certain difficulty for transportation and shelving.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a both can satisfy the needs of the pc component hoist and mount of conventional size, can adapt to the hoist and mount requirement of the great pc component of size again, and the volume is less, uses the telescopic hoisting machine structure that the flexibility ratio is high.

The utility model provides a technical scheme that its technical problem adopted is: a telescopic hoisting mechanism comprises a square main hoisting frame, a first telescopic hanging frame and a second telescopic hanging frame, wherein the top surface of the square main hoisting frame is provided with hoisting hanging points, the bottom surface of the square main hoisting frame is provided with a plurality of groups of weight hanging points, the first telescopic hanging frame and the second telescopic hanging frame are respectively sleeved in the main hoisting frame from two sides of the main hoisting frame, a transmission shaft is positioned in the center of the main hoisting frame, a shaft sleeve is sleeved on the transmission shaft, a first movable assembly is used for connecting the shaft sleeve and the first telescopic hanging frame, and a second movable assembly is used for connecting the shaft sleeve and the second telescopic hanging frame, and the first telescopic hanging frame; when the transmission shaft rotates in the circumferential direction, the shaft sleeve translates along the transmission shaft, and the first telescopic hanging bracket and the second telescopic hanging bracket are pushed to synchronously translate to be close to or far away from through the first movable assembly and the second movable assembly. The utility model discloses the hoisting hanging point of main hoisting frame top is used for installing the steel wire rope of hoist, the heavy object hanging point of below is used for installing the steel wire rope who hangs the heavy object of pulling, through set up the first flexible gallows and the second flexible gallows of the looks isostructure respectively in the both sides of main hoisting frame, can extend the length of main hoisting frame to both sides in step, it is adjustable to stretch out length, can adapt to the pc component of different length or volume, the flexibility ratio is high, when reaching the pc component that adapts to the volume great or length great, can not influence hoisting mechanism's overall structure stationarity, also can all accomodate first flexible gallows and second flexible gallows to main hoisting frame, avoid the length of main hoisting frame too big to bring the influence to the transportation, avoid depositing hoisting mechanism and need occupy great space; the matching structure of the transmission shaft, the shaft sleeve, the first movable assembly and the second movable assembly is stable and effective, the structure is simple, and the manufacturing cost is low.

Furthermore, the transmission shaft is a screw rod connected with the motor, and the inner wall of the shaft sleeve is provided with an internal thread matched with the transmission shaft. The circumferential rotation of the screw rod is converted into the linear motion of the shaft sleeve, the structure is simple, the transmission is stable and effective, and the matching precision is high.

Furthermore, a left side wing and a right side wing are symmetrically arranged on two sides of the shaft sleeve, the first movable assembly comprises a first connecting rod with one end connected with the left side wing and a first rotating shaft connected with the other end of the first connecting rod, the first rotating shaft is connected to the center of the end face of the first telescopic hanging bracket, and the first connecting rod is parallel to the plane where the main hanging frame is located; the second movable assembly comprises a second connecting rod and a second rotating shaft, one end of the second connecting rod is connected with the right side wing, the second rotating shaft is connected with the other end of the second connecting rod, the second rotating shaft is connected to the center of the second telescopic hanging bracket close to the end face of the first telescopic hanging bracket, and the second connecting rod is parallel to the plane of the main hanging frame. The first movable assembly and the second movable assembly are connected with the first telescopic hanging bracket and the second telescopic hanging bracket respectively through symmetry, synchronous reverse translation of the first telescopic hanging bracket and the second telescopic hanging bracket can be guaranteed, balance of two sides of the main hanging frame is guaranteed, the first movable assembly and the second movable assembly on two sides are synchronously driven by one transmission shaft, and power energy consumption is low.

Furthermore, the shaft sleeve comprises a first shaft sleeve and a second shaft sleeve which are symmetrically arranged, the first shaft sleeve is connected with the first telescopic hanging bracket through a first movable assembly and is connected with the second telescopic hanging bracket through a second movable assembly, the second shaft sleeve is connected with the first telescopic hanging bracket through a third movable assembly and is connected with the second telescopic hanging bracket through a fourth movable assembly. The first movable assembly, the second movable assembly, the third movable assembly and the fourth movable assembly are synchronously driven through one transmission shaft, the driving is stable, the energy consumption is low, and the first telescopic hanging bracket and the second telescopic hanging bracket are stably and smoothly moved.

Furthermore, a T-shaped first connecting piece is fixedly connected to the side face of the first telescopic hanging bracket, a first opening and a third opening are symmetrically formed in the T-shaped first connecting piece, a connecting shaft I positioned in the center of the first opening and the center of the third opening is vertically connected to the side face of the first telescopic hanging bracket, the first opening is connected with the first movable assembly, and the third opening is connected with the third movable assembly; the side face of the second telescopic hanging bracket is fixedly connected with a second connecting piece opposite to the first connecting piece, a second opening and a fourth opening are symmetrically formed in the second connecting piece, a connecting shaft II located at the center of the second opening and the center of the fourth opening is vertically connected to the side face of the second telescopic hanging bracket, the second opening is connected with a second movable assembly, and the fourth opening is connected with a fourth movable assembly.

Furthermore, the outer side surface of the first telescopic hanging bracket is respectively abutted against the inner side surface of the main hanging frame; the outer side surface of the second telescopic hanging bracket is respectively abutted against the inner side surface of the main hanging frame. First flexible gallows and the flexible gallows of second are all nested in main hanging the frame, and main hanging the frame can form firm supporting role to it, avoids it to rock at will, and the structure is more steady, firm, and main hanging the frame has also lightened the weight that main hanging the frame for hollow structure moreover, and whole hoisting machine constructs weight littleer, reduces the hoist and mount energy consumption.

Furthermore, at least one group of hollow parts for reducing weight are symmetrically arranged on the main hanging frame, the first telescopic hanging frame and the second telescopic hanging frame. The hollow part can reduce the weight of the whole hoisting mechanism, and the symmetry of the hollow part ensures the balance of the first telescopic hanging bracket and the second telescopic hanging bracket on the two sides of the main hanging frame.

Furthermore, a first heavy object hanging point group is arranged on the bottom surface of the end part of the first telescopic hanging frame, and a second heavy object hanging point group is arranged on the bottom surface of the end part of the second telescopic hanging frame. First heavy object hanging point and second heavy object hanging point not only play the effect of connecting the steel wire rope that hangs and draw the heavy object, can also play spacing effect, avoid first flexible gallows and the flexible gallows of second excessive translation to hang in the frame to the main.

Furthermore, a first lock pin group and a second lock pin group are further arranged at the positions, close to the end portions, of the main hanging frame, cavities are formed in the two sides of the main hanging frame along the length direction, when the first telescopic hanging frame and the second telescopic hanging frame are adjusted to the target length, the first lock pin group can penetrate through the cavities of the main hanging frame to abut against the outer wall of the first telescopic hanging frame, and the second lock pin group can penetrate through the cavities of the main hanging frame to abut against the outer wall of the second telescopic hanging frame. The first locking pin group and the second locking pin group are simple in structure, but can be locked when the first telescopic hanging bracket and the second telescopic hanging bracket are adjusted to target positions, so that the first telescopic hanging bracket and the second telescopic hanging bracket are prevented from moving randomly when the hanging mechanism is inclined; the cavity increases the contact area between the first locking pin group and the main hanging frame and between the second locking pin group and the main hanging frame, and the stability of the connecting structure of the cavity and the main hanging frame is increased.

Furthermore, the hoisting points are arranged at the corners around the top surface of the main hoisting frame.

The utility model has the advantages that: 1) the device can adapt to pc components with different lengths and volumes, and has high use flexibility; 2) through the matching of the screw rod, the two shaft sleeves and the four groups of movable assemblies, the whole structure is simple, the matching is stable, and the moving speed is adjustable; 3) the whole weight is light, and the manufacturing cost is relatively low.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is an enlarged view of a structure in fig. 1.

Fig. 3 is a schematic view of the local bottom view structure of the present invention.

Fig. 4 is a schematic view of the structure of the utility model in use.

Fig. 5 is a schematic view of the structure of the present invention.

Fig. 6 is a schematic top view of the present invention.

Fig. 7 is a schematic bottom view of the present invention.

Fig. 8 is a schematic side view of the present invention.

Detailed Description

In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

As shown in fig. 1-8, a telescopic hoisting mechanism comprises a main hoisting frame 1 in a hollow square frame structure, four hoisting hanging points 11 are arranged at four corners around the top surface of the main hoisting frame 1, so that a steel wire rope of a crane can stably hoist the main hoisting frame 1; four groups of weight hanging points 12 are arranged on the bottom surface of the main hanging frame 1 along the length direction, each group of weight hanging points 12 comprises two opposite vertical hanging plates 121 which are respectively positioned on two opposite side surfaces of the main hanging frame 1, hanging holes 122 are formed in the hanging plates 121, a transmission shaft 4 is arranged in the center position of the main hanging frame 1 along the width direction, and the four groups of weight hanging points 12 are respectively distributed on two sides of the transmission shaft 4 in a pairwise symmetrical manner.

A first telescopic hanging bracket 2 and a second telescopic hanging bracket 3 are respectively nested on two sides of the main hanging frame 1, the structure of the first telescopic hanging bracket 2 and the structure of the second telescopic hanging bracket 3 are mutually symmetrical, specifically, the first telescopic hanging bracket 2 is a hollow square frame structure with the volume smaller than that of the main hanging frame 1, the outer top surface of the first telescopic hanging bracket 2 abuts against the inner top surface of the main hanging frame 1, the outer bottom surface of the first telescopic hanging bracket 2 abuts against the inner bottom surface of the main hanging frame 1, the side surface of the first telescopic hanging bracket 2 abuts against the inner side surface of the main hanging frame 1, the bottom surface of one end of the first telescopic hanging bracket 2, which is far away from the second telescopic hanging bracket 3, is provided with a first heavy object hanging point group 22 which is respectively vertical to two opposite side surfaces of the first telescopic hanging bracket 2 and extends downwards to form a flat plate structure of the horizontal plane;

the second telescopic hanging bracket 3 is a hollow square frame structure with the volume smaller than that of the main hanging frame 1, the outer top surface of the second telescopic hanging bracket 3 is abutted against the inner top surface of the main hanging frame 1, the outer bottom surface of the second telescopic hanging bracket is abutted against the inner bottom surface of the main hanging frame 1, the side surfaces of the second telescopic hanging bracket 3 are abutted against the inner side surface of the main hanging frame 1, a second heavy object hanging point group 32 is arranged at the bottom surface of one end, far away from the first telescopic hanging bracket 2, of the second telescopic hanging bracket 3 and is a flat plate structure which is respectively perpendicular to two opposite side surfaces of the second telescopic hanging bracket 3 and extends downwards to the horizontal plane where the bottom surface of the second telescopic hanging.

During the assembly, first flexible gallows 2 from the main left side of hanging frame 1 inlay the cover and insert in main hanging frame 1, the flexible gallows 3 of second from the main right side of hanging frame 1 inlay the cover and insert in main hanging frame 1, 2 outer walls of first flexible gallows and 3 outer walls of flexible gallows of second all with the main laminating contact of hanging 1 inner wall of frame. In order to reduce the overall weight, two groups of hollow parts 15 are symmetrically arranged at the positions opposite to the upper surface and the lower surface of the main hanging frame 1, and the hollow parts 15 occupy most of the area of the main hanging frame 1; similarly, two sets of hollowed-out portions 24 are symmetrically arranged opposite to the upper surface and the lower surface of the first telescopic hanger 2, and two sets of hollowed-out portions 34 are symmetrically arranged opposite to the upper surface and the lower surface of the second telescopic hanger 3.

The transmission shaft 4 is a screw, the motor 41 is installed at the center of the side surface of the main hanging frame 1, and the motor passes through the side wall of the main hanging frame 1 and then is connected with one end of the transmission shaft 4 to drive the transmission shaft 4 to rotate circumferentially. The transmission shaft 4 is sleeved with two shaft sleeves, namely a first shaft sleeve 53 and a second shaft sleeve 54 which are symmetrically distributed, and inner walls of the first shaft sleeve 53 and the second shaft sleeve 54 are provided with inner threads which can be in transmission fit with the outer threads of the transmission shaft 4. The first shaft sleeve 53 is connected with the first telescopic hanging bracket 2 through the first movable assembly 6, is connected with the second telescopic hanging bracket 3 through the second movable assembly 7, and the second shaft sleeve 54 is connected with the first telescopic hanging bracket 2 through the third movable assembly 8 and is connected with the second telescopic hanging bracket 3 through the fourth movable assembly 9.

The first shaft sleeve 53, the first telescopic hanger 2 and the second telescopic hanger 3 are symmetrically provided with a left side wing 51 and a right side wing 52 at two sides corresponding to the two sides respectively, the first movable assembly 6 comprises a first connecting rod 61 parallel to the plane where the main hanging frame 1 is located and a first rotating shaft 62 perpendicular to the plane where the main hanging frame 1 is located, one end of the first connecting rod 61 is connected with the left side wing 51, the other end of the first connecting rod 61 is rotatably connected with the first rotating shaft 62, and in order to improve the stability, the number of the first connecting rods 61 is two and is respectively located at the upper side and the lower side of the left side wing 51; the first telescopic hanging bracket 2 is fixedly connected with a T-shaped first connecting piece 21 at the center of one end face close to the second telescopic hanging bracket 3, a first connecting shaft 213 of the first connecting piece 21 is fixedly connected with the first telescopic hanging bracket 2, the first connecting piece 21 is symmetrically provided with a first opening 211 and a third opening 212 by taking the first connecting shaft 213 as the center, the first opening 211 is rotatably connected with the first rotating shaft 62 of the first movable assembly 6, and the third opening 212 is rotatably connected with the third rotating shaft of the third movable assembly 8.

The right side wing 52 of the first shaft sleeve 53 is connected with a second movable assembly 7, the structure of the second movable assembly 7 is the same as that of the first movable assembly 6, the installation position is symmetrical by taking the transmission shaft 4 as a center, the second movable assembly 7 comprises a second connecting rod 71 parallel to the plane where the main hanging frame 1 is located and a second rotating shaft perpendicular to the plane where the main hanging frame 1 is located, one end of the second connecting rod 71 is connected with the right side wing 52, the other end of the second connecting rod 71 is rotatably connected with the second rotating shaft, and in order to improve the stability, the number of the second connecting rods 71 is two, and the two second connecting rods are respectively located on the upper side and the lower side of the right side wing 52; the flexible gallows of second 3 is close to a terminal surface central point of first flexible gallows 2 and puts fixedly connected with T font second connecting piece, the structure of second connecting piece is the same with the structure of first connecting piece 21, install on the position just right with first connecting piece 21 mutually, the even axle two 313 and the flexible gallows 3 fixed connection of second connecting piece, use even axle two 313 to seted up second trompil and fourth trompil as central symmetry on the second connecting piece, the second trompil rotates with the second pivot of second movable assembly 7 and links to each other, the fourth trompil rotates with the fourth pivot of fourth movable assembly 9 and links to each other.

The structure of the second shaft sleeve 54 is the same as that of the first shaft sleeve 53, a left side wing 55 and a right side wing 56 are symmetrically arranged, the structure of the third movable assembly 8 is the same as that of the first movable assembly 6, the installation position is symmetrical by taking the first connecting piece 21 as the center, one end of a third connecting rod of the third movable assembly 8 is rotatably connected with the left side wing 55, the structure of the fourth movable assembly 9 is the same as that of the second movable assembly 7, the installation position is symmetrical by taking the second connecting shaft 313 as the center, and details are omitted.

When the motor 41 drives the transmission shaft 4 to rotate in the circumferential direction to drive the first shaft sleeve 53 and the second shaft sleeve 54 to synchronously move horizontally and approach, the first connecting rod 61 and the third connecting rod 81 are driven to synchronously move, an included angle between the first connecting rod 61 and the third connecting rod 81 is reduced, the first telescopic hanger 2 is pushed by the first connecting rod 61 and the third connecting rod 81 to jointly move horizontally and extend out of the main hanging frame 1, meanwhile, the second connecting rod 71 and the fourth connecting rod 91 synchronously move, an included angle between the second connecting rod 71 and the fourth connecting rod 91 is reduced, the second telescopic hanger 3 is pushed by the second connecting rod 71 and the fourth connecting rod 91 to jointly move horizontally and extend out of the main hanging frame 1, and the translation speed is the same as that of the first telescopic hanger 2;

when the motor 41 drives the transmission shaft 4 to rotate reversely to drive the first shaft sleeve 53 and the second shaft sleeve 54 to synchronously translate and move away, the first connecting rod 61 and the third connecting rod 81 are driven to synchronously move, an included angle between the first connecting rod 61 and the third connecting rod 81 is increased, the first telescopic hanger 2 is pushed by the first connecting rod 61 and the third connecting rod 81 to translate inwards and retract into the main hanging frame 1, meanwhile, the second connecting rod 71 and the fourth connecting rod 91 synchronously move, an included angle between the second connecting rod 71 and the fourth connecting rod 91 is increased, the second telescopic hanger 3 is pushed by the second connecting rod 71 and the fourth connecting rod 91 to translate inwards and retract into the main hanging frame 1, and the translation speed is the same as that of the first telescopic hanger 2; the sum of the lengths of the first telescopic hanging bracket 2 and the second telescopic hanging bracket 3 is less than the length of the main hanging frame 1, so that the first telescopic hanging bracket and the second telescopic hanging bracket translate until the first weight hanging point group 22 and the second weight hanging point group 32 are abutted against the main hanging frame 1.

In order to fix the first telescopic hanger 2 and the second telescopic hanger 3 at a target position, a first locking pin group 13 and a second locking pin group 14 are arranged at a position of the main hanging frame 1 close to an end portion, the first locking pin group 13 comprises two first locking pins symmetrically arranged at two sides of the main hanging frame 1, the second locking pin group 14 comprises two second locking pins symmetrically arranged at two sides of the main hanging frame 1, in order to improve locking stability, cavities 16 extending along the length direction are formed at two sides of the main hanging frame 1, so that the first locking pins at two sides respectively penetrate through the cavities 16 and then abut against the side wall of the first telescopic hanger 2, and the second locking pins at two sides respectively penetrate through the cavities 16 and then abut against the side wall of the second telescopic hanger 3.

When the hanging and pulling heavy object is large, more hanging points are needed, the first telescopic hanging bracket 2 and the second telescopic hanging bracket 3 extend out of the main hanging frame 1, multiple gears of the available length of the main hanging frame 1 can be adjusted to meet the requirements of hoisting devices of pc components with different sizes, the first lock pin group 13 is rotated inwards, the first telescopic hanging bracket 2 is firmly abutted to the inside of the main hanging frame 1, the second lock pin group 14 is rotated inwards, and the second telescopic hanging bracket 3 is firmly abutted to the inside of the main hanging frame 1; when the hanging weight is small, a plurality of hanging points are not needed, the first telescopic hanging bracket 2 and the second telescopic hanging bracket 3 on two sides of the main hanging frame 1 can be retracted into the main hanging frame 1, the first weight hanging point group 22 abuts against one end of the main hanging frame 1, the second weight hanging point group 32 abuts against the other end of the main hanging frame 1, the available length of the main hanging frame 1 is the basic length, the first locking pin group 13 penetrates through the main hanging frame 1 and abuts against the outer wall of the first telescopic hanging bracket 2, the fixing of the relative position of the first telescopic hanging bracket 2 and the main hanging frame 1 is realized, the second locking pin group 14 penetrates through the main hanging frame 1 and abuts against the outer wall of the second telescopic hanging bracket 3, and the fixing of the relative position of the second telescopic hanging bracket 3 and the main hanging frame 1 is realized.

The above detailed description is provided for illustrative purposes, and is not intended to limit the present invention, and any modifications and variations of the present invention are within the spirit and scope of the following claims.

Claims

1. The utility model provides a telescopic hoisting machine constructs which characterized in that: the lifting device comprises a square main lifting frame (1) with lifting hanging points (11) on the top surface and multiple groups of heavy object hanging points (12) on the bottom surface, a first telescopic lifting frame (2) and a second telescopic lifting frame (3) which are respectively sleeved into the main lifting frame (1) from two sides of the main lifting frame (1), a transmission shaft (4) positioned at the center of the main lifting frame (1), a shaft sleeve sleeved on the transmission shaft (4), a first movable assembly (6) used for connecting the shaft sleeve and the first telescopic lifting frame (2), and a second movable assembly (7) used for connecting the shaft sleeve and the second telescopic lifting frame (3), wherein the first telescopic lifting frame (2) and the second telescopic lifting frame (3) are symmetrically arranged; when the transmission shaft (4) rotates in the circumferential direction, the shaft sleeve translates along the transmission shaft (4), and the first telescopic hanging bracket (2) and the second telescopic hanging bracket (3) are pushed to synchronously translate to be close to or far away from through the first movable assembly (6) and the second movable assembly (7).

2. The telescopic hoisting mechanism of claim 1, wherein: the transmission shaft (4) is a screw rod connected with the motor (41), and the inner wall of the shaft sleeve is provided with an internal thread matched with the transmission shaft (4).

3. The telescopic hoisting mechanism of claim 1, wherein: the two sides of the shaft sleeve are symmetrically provided with a left wing (51) and a right wing (52), the first movable assembly (6) comprises a first connecting rod (61) with one end connected with the left wing (51) and a first rotating shaft (62) connected with the other end of the first connecting rod (61), the first rotating shaft (62) is connected to the central position of the end face of the first telescopic hanging bracket (2), and the first connecting rod (61) is parallel to the plane of the main hanging frame (1); the second movable assembly (7) comprises a second connecting rod (71) with one end connected with the right side wing (52) and a second rotating shaft connected with the other end of the second connecting rod (71), the second rotating shaft is connected to the center of the end face, close to the first telescopic hanging bracket (2), of the second telescopic hanging bracket (3), and the plane where the second connecting rod (71) and the main hanging frame (1) are located is parallel.

4. The telescopic hoisting mechanism of claim 3, wherein: the shaft sleeve comprises a first shaft sleeve (53) and a second shaft sleeve (54) which are symmetrically arranged, the first shaft sleeve (53) is connected with the first telescopic hanging bracket (2) through a first movable assembly (6) and is connected with the second telescopic hanging bracket (3) through a second movable assembly (7), and the second shaft sleeve (54) is connected with the first telescopic hanging bracket (2) through a third movable assembly (8) and is connected with the second telescopic hanging bracket (3) through a fourth movable assembly (9).

5. The telescopic hoisting mechanism of claim 4, wherein: the side surface of the first telescopic hanging bracket (2) is fixedly connected with a T-shaped first connecting piece (21) which is symmetrically provided with a first open hole (211) and a third open hole (212), a connecting shaft I (213) positioned at the centers of the first open hole (211) and the third open hole (212) is vertically connected with the side surface of the first telescopic hanging bracket (2), the first open hole (211) is connected with a first movable assembly (6), and the third open hole (212) is connected with a third movable assembly (8); the side face of the second telescopic hanging bracket (3) is opposite to the first connecting piece (21) and is fixedly connected with a second connecting piece, a second opening and a fourth opening are symmetrically formed in the second connecting piece, a connecting shaft II (313) located at the center of the second opening and the center of the fourth opening is vertically connected to the side face of the second telescopic hanging bracket (3), the second opening is connected with the second movable assembly (7), and the fourth opening is connected with the fourth movable assembly (9).

6. The telescopic hoisting mechanism of claim 1, wherein: the outer side surface of the first telescopic hanging bracket (2) is respectively abutted against the inner side surface of the main hanging frame (1); the outer side surface of the second telescopic hanging bracket (3) is respectively abutted against the inner side surface of the main hanging frame (1).

7. The telescopic hoisting mechanism of claim 1, wherein: at least one group of hollow parts for reducing weight are symmetrically arranged on the main hanging frame (1), the first telescopic hanging bracket (2) and the second telescopic hanging bracket (3).

8. The telescopic hoisting mechanism of claim 1, wherein: the bottom surface of the end part of the first telescopic hanging bracket (2) is provided with a first heavy object hanging point group (22), and the bottom surface of the end part of the second telescopic hanging bracket (3) is provided with a second heavy object hanging point group (32).

9. The telescopic hoisting mechanism of claim 1, wherein: the telescopic hanging frame is characterized in that a first locking pin group (13) and a second locking pin group (14) are further arranged at the position, close to the end portion, of the main hanging frame (1), cavities (16) are formed in the two sides of the main hanging frame (1) along the length direction, when the first telescopic hanging frame (2) and the second telescopic hanging frame (3) are adjusted to the target length, the first locking pin group (13) can penetrate through the cavities (16) of the main hanging frame (1) to abut against the outer wall of the first telescopic hanging frame (2), and the second locking pin group (14) can penetrate through the cavities of the main hanging frame (1) to abut against the outer wall of the second telescopic hanging frame (3).

10. The telescopic hoisting mechanism of claim 1, wherein: the hoisting hanging points (11) are arranged at the corners around the top surface of the main hanging frame (1).