CN103663102B - A kind of spreader assembly - Google Patents

Abstract

The invention provides a sling assembly, which includes a sling body, a plurality of upper flexible slings and a plurality of lower flexible slings; the sling body is a frame, and the sling body has the same number of upper connections as the upper flexible slings part and the same number of lower connecting parts as the lower flexible sling, the plurality of upper connecting parts are distributed in a fixed polygon, and the plurality of lower connecting parts are distributed in a fixed polygon; one end of the upper flexible sling is fixed to the upper connecting part The other end is used to connect the lifting equipment; one end of the lower flexible sling is fixedly connected to the lower connection part, and the other end is used to connect the object to be hoisted; the lengths of the upper flexible sling and the lower flexible sling are independently adjustable. The hanger assembly provided by the invention can keep the objects to be hung level during the hoisting process, and is safer.

Description

A hanger assembly

technical field

The invention relates to a spreader assembly, in particular to a spreader assembly for hoisting a complete vehicle.

Background technique

Nowadays, in all walks of life, the lifting and handling of objects will be involved. The safety of hoisting and the convenience of equipment use are usually factors that need to be considered, especially for the handling of heavy objects, the safety of the hoisting process is the top priority.

In the prior art, for the hoisting of heavy objects, the generally used spreaders are beam-type or frame-type. The object to be hung is clamped by the beam, and then the object to be hung is integrated with the frame through bolts, and then the frame and the object to be hung are lifted by the power system and transported to the target location. The structural frame has high strength and safety, but the operation process is cumbersome and time-consuming, and the hoisting equipment occupies a large space. At the same time, when the above-mentioned equipment is hoisting relatively fine objects, its rigid structure is very easy to scratch the surface of the object. In addition, for the object to be hoisted, the position of its center of mass is uncertain. During the hoisting process, it is difficult to maintain the level and adjust the object. As a result, the object cannot be dropped smoothly during the process of lowering the object, which will cause impact and damage the object.

Simultaneously, also use a kind of spreader in the prior art, connect on the hoisting equipment (such as crane) by one end of soft belt, then bind the other end of soft belt to the object to be hoisted. The spreader has a simple structure, occupies a small area, and is easy to store; however, the spreader is all flexible parts, which cannot fix the object well, and the center of the object to be lifted is uncertain, and it is easy to swing after being lifted. very dangerous. And, for the lifting process, it is impossible to keep the object level.

In view of this, some improvements have been made to the above-mentioned sling in the prior art. The soft belt is connected to the strip-shaped solid through an adjustable length device, and the soft belt for connecting the object to be hung is connected through the strip-shaped solid; There are two strips of solids distributed in parallel. The spreader with this structure can adjust the position of the object to be suspended to a certain extent to keep it level.

But the sling of above-mentioned structure still can't keep the stability of to-be-hanging object in hoisting process, unsafe. At the same time, the adjustable degree of the object to be hoisted is small, and the horizontal hoisting cannot be effectively realized.

Contents of the invention

In order to overcome the problems in the prior art that the objects to be hung cannot be kept horizontal and unsafe during hoisting, the present invention provides a sling assembly, which can keep the objects to be hung horizontally during the hoisting process and is safer.

The spreader assembly disclosed in the present invention comprises a spreader body, a plurality of upper flexible suspenders and a plurality of lower flexible suspenders; The lower flexible sling has the same number of lower connecting parts, the plurality of upper connecting parts are distributed in a fixed polygon, and the plurality of lower connecting parts are distributed in a fixed polygon; one end of the upper flexible sling is fixedly connected to the upper connecting part, and the other One end is used to connect the lifting equipment; one end of the lower flexible sling is fixedly connected to the lower connecting part, and the other end is used to connect the object to be hoisted; the lengths of the upper flexible sling and the lower flexible sling are independently adjustable.

The sling assembly disclosed by the invention is connected to the lifting device through the upper flexible sling, and the lower flexible sling is connected to the object to be hoisted. By adjusting the length of the upper flexible sling, the sling body and the object to be hoisted are roughly in a horizontal state at the initial stage of lifting, and then by adjusting the length of the lower flexible sling, the object to be hoisted is in a stable horizontal state. When the object to be lifted is moved to the test bench, impact on the test bench can be avoided. The important thing is that when hoisting, the lifting device lifts the spreader body through the upper flexible sling, and then transmits the upward pulling force to the lower flexible sling through the sling body, and then lifts the object to be hoisted. The positions of the upper connection part of the connection between the upper flexible sling and the sling body and the lower connection part of the connection between the lower flexible sling and the sling body are fixed on the sling body, and through the support of the frame-shaped sling body, During the hoisting process, the upper flexible sling and the lower flexible sling are not in a straight line, and the lower flexible sling will not be too close to the object to be hoisted, which can reduce the contact and friction between the lower flexible sling and the object to be hoisted to a certain extent.

Moreover, after the object to be hung is hoisted, the object to be hung is in an unbalanced state, but because the object to be hung is pulled by the four lower flexible slings, and the four flexible slings are distributed on the spreader body, combined with the supporting function of the spreader body , at the moment of hoisting the object to be hung, the swing of the object to be hung is smaller than that without the support of the sling body, that is, the hoisting process is more stable and safer by using the sling assembly disclosed in the present invention, and at the same time combined with the flexible sling Adjustment, so that the hanging object can return to the horizontal balance state as soon as possible.

Further, there are four upper flexible slings, and the four upper connecting parts are distributed in a quadrangular shape; there are four lower flexible slings, and the four lower connecting parts are distributed in a quadrangular shape.

Further, the sling assembly also includes a lifting head for connecting lifting equipment; among the four upper flexible slings, the two upper flexible slings opposite along the quadrilateral diagonal are integrated to form two integrated slings; The suspension head is arranged on the integrated sling and can be fixed at different positions on the integrated sling.

Further, the hanger includes a frame and a hook connection part fixed on the frame for connecting the lifting equipment. There is at least one clamping beam inside the frame, the frame on one side of the clamping beam, the clamping beam, and the other side of the clamping beam. The side frames are sequentially staggered on both sides of the integrated sling.

Further, the upper connecting part is an upper connecting shaft, and the lower connecting part is a lower connecting shaft; the upper flexible sling is connected to the upper connecting shaft, and the lower flexible sling is connected to the lower connecting shaft.

Further, there are four connecting shafts on the spreader body, and the connecting shafts are used as the upper connecting part and the lower connecting part at the same time; the four connecting shafts are distributed in a fixed square; the four upper flexible slings are respectively connected to the four connecting shafts , and the four lower flexible straps are respectively connected to the four connecting shafts.

Further, the hanger assembly also includes four high hangers and four low hangers; one end of the high hangers is connected to the upper flexible sling, and the other end is connected to the connecting shaft and can rotate around the connecting shaft. The lower flexible sling is connected, and one end is connected with the connecting shaft, and can rotate around the connecting shaft.

Further, the sling assembly also includes four ratchet mechanisms, which are fixed on the low sling and are fixedly connected to the end of the lower flexible sling so that the length of the lower flexible sling can be adjusted.

Further, the end of the lower flexible sling away from the ratchet mechanism is detachably connected to the ring belt.

Further, the upper flexible sling and/or the lower flexible sling is a nylon flat belt.

The hanger assembly disclosed in the present invention can be used to predict which direction the center of gravity of the object to be hung is biased, and to place the hanger in this direction through coarse adjustment (before lifting, adjust the length of the upper flexible sling). Move, shorten the distance from the hanging head to the connecting part in this direction (that is, shorten the length of the upper flexible sling)), so that after hoisting, the object to be hoisted is in a roughly horizontal state, but usually at this time, it is still in an unbalanced state. Then perform fine adjustment (after lifting, adjust the length of the flexible sling), and adjust the object to be hoisted to a stable horizontal state. Moreover, in the process of adjusting the lower flexible sling, due to the supporting effect of the sling body, the object to be hoisted is more stable, and the hoisting process is safer.

Moreover, the positions of the upper connecting part and the lower connecting part on the spreader body will not change, combined with the supporting function of the connecting body, only the length of the lower flexible sling will be changed during the fine adjustment process, and the lower flexible sling and the lower flexible sling will not be changed. The objects to be hung generate friction, which avoids damage to the objects to be hung. In addition, the spreader assembly has a small footprint for easy storage and placement.

Description of drawings

Fig. 1 is a schematic diagram of the hoisting state of the sling assembly provided by the present invention.

Fig. 2 is an enlarged view of A in Fig. 1 .

Fig. 3 is a front view of the hanger in the spreader assembly provided by the present invention.

Fig. 4 is a top view of the hanger in the spreader assembly provided by the present invention.

Fig. 5 is a top view of the spreader body in the spreader assembly provided by the present invention.

Among them, 1. Lifting head; 11. Frame; 12. Card beam; 13. Hook connection; 2. Upper flexible sling; 3. Lifter body; 31. Connecting shaft; 4. Lower flexible sling; 5. High-lift ; 6, low hanging; 7, ratchet mechanism; 8, ring belt; 91, suspension hook; 92, object to be hung.

detailed description

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

In describing the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device Or elements must have a certain orientation, be constructed and operate in a certain orientation, and thus should not be construed as limiting the invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

The spreader assembly disclosed in the present invention comprises a spreader body, a plurality of upper flexible suspenders and a plurality of lower flexible suspenders; The lower flexible sling has the same number of lower connecting parts, the plurality of upper connecting parts are distributed in a fixed polygon, and the plurality of lower connecting parts are distributed in a fixed polygon; one end of the upper flexible sling is fixedly connected to the upper connecting part, and the other One end is used to connect the lifting equipment; one end of the lower flexible sling is fixedly connected to the lower connecting part, and the other end is used to connect the object to be hoisted; the lengths of the upper flexible sling and the lower flexible sling are independently adjustable.

According to the present invention, there are multiple upper flexible slings, and the sling body has multiple upper connecting parts, and the number of the upper flexible slings is the same as the number of the upper connecting parts. The plurality of upper connecting parts are distributed in a fixed polygon. In order to form a polygon, that is, there are at least three upper connecting parts and upper flexible slings. Further, in order to make the hoisting process more stable, the position of the upper connecting portion on the spreader body can make the center of mass of the object to be hoisted be located within the polygon formed by the plurality of upper connecting portions during the hoisting process. Likewise, there are multiple lower flexible straps. The quantity of the lower flexible suspenders is the same as the quantity of the lower connecting parts. The plurality of lower connecting parts are distributed in a fixed polygon. In order to form a polygon, that is, there are at least three lower connecting parts and lower flexible straps.

In the present invention, there are four upper flexible slings, and the four upper connecting parts are distributed in a quadrangular shape; there are four lower flexible slings, and the four lower connecting parts are distributed in a quadrangular shape. At this time, the lifting process can be made more stable.

For the above-mentioned spreader body, its shape is not too limited, and a symmetrical circular or rectangular frame is preferably used.

According to the present invention, there are many ways to connect the upper flexible sling to the lifting device. For example, the end of the upper flexible sling has a sling ring, and the sling ring can be placed on the hook of the lifting device, which is not limited in the present invention. According to the present invention, preferably, the sling assembly further includes a hanger for connecting the lifting device; among the four upper flexible slings, the two upper flexible slings opposite along the diagonals of the quadrilateral are integrated to form two An integrated sling; the hanging head is arranged on the integrated sling and can be fixed at different positions on the integrated sling.

In the above structure, the two upper flexible slings are integrated, and the two upper flexible slings can be combined together or one flexible sling can be used, which is regarded as two combined upper flexible slings. At this time, the two integrated slings pass through the suspension head, and each integrated sling is divided into two sections by the suspension head, and the integrated sling from the upper connection part to the suspension head is the upper flexible sling. By changing the position of the hanging head on the integrated sling, it is regarded as changing the length of the upper flexible sling.

Specifically, the hanger includes a frame and a hook connection part fixed on the frame for connecting the lifting equipment. There is at least one clamping beam inside the frame, the frame on one side of the clamping beam, the clamping beam, and the other side of the clamping beam. The side frames are sequentially staggered on both sides of the integrated sling.

According to the above structure, the frame can be in various shapes, such as circle, rectangle and so on. There is a card beam in the middle of the frame. Specifically, the card beam connects the two sides of the frame. For example, in a rectangular frame, the card beam is parallel to the two opposite sides. That is, when there is one card beam, the card beam and the frame form a "day". font" structure. When there are multiple card beams, the multiple card beams are arranged in parallel. For example, when there are two parallel card beams, a "mesh-shaped" structure is formed between the card beams and the frame. When there are more than two card beams, the structure of the card beam and the frame can be deduced by analogy. For example, when there are two card beams, it is recorded here as the first card beam and the second card beam, and the frame on one side of the card beam (such as the first card beam), the first card beam, the second card beam, and the card beam (such as the first card beam) the frame on the other side is alternately located on both sides of the integrated sling, that is, the integrated sling passes downward between the first card beam and the frame on one side of the first card beam, and bypasses the The first card beam passes upwards from between the first card beam and the second card beam, and then bypasses the second card beam, and passes through the frame on the other side of the second card beam and the first card beam (that is, away from the first card beam) beam, and the frame adjacent to the second card beam) upwards.

At the same time, the hook connecting part is fixed on the frame and is used for connecting the lifting equipment. For this structure, those skilled in the art can adopt various common structures to realize, for example, the hook connecting part and the frame form a ring, and the plane where the hook connecting part is located is perpendicular to the plane where the frame is located.

Among the aforementioned various structures, the upper connection part and the lower connection part can adopt various common structures, as long as the upper flexible sling and the lower flexible sling can be connected to the spreader body. According to the present invention, preferably, the upper connecting portion is an upper connecting shaft, and the upper flexible sling is connected to the upper connecting shaft. For example, the end of the upper flexible sling is a collar, the upper connecting shaft is located in the collar, and the upper flexible sling can rotate around the upper connecting shaft. Likewise, the lower connecting portion is a lower connecting shaft, and the lower flexible sling is connected to the lower connecting shaft.

According to the present invention, when there are four upper flexible slings, the sling body has four connecting shafts, and the connecting shafts serve as the upper connecting portion and the lower connecting portion at the same time; the four upper flexible slings are respectively connected to the four connecting shafts, And the four lower flexible suspenders are respectively connected to the four connecting shafts.

That is, at this time, the upper connecting portion and the lower connecting portion are overlapped, and the connecting shaft is simultaneously used as the upper connecting portion and the lower connecting portion. Both the upper flexible sling and the lower flexible sling are connected to the connecting shaft.

In order to achieve a better balance and stable lifting effect, further, the four connecting shafts are distributed in a fixed square.

The upper flexible sling can be directly connected to the connecting shaft, or can be connected to the connecting shaft through a high suspension, that is, one end of the high suspension is connected to the upper flexible suspension, and the other end is connected to the connecting shaft, and can rotate around the connecting shaft. Likewise, the lower flexible sling can be connected directly or with a low suspension to the connecting shaft. Preferably, the sling assembly also includes four high hangers and four low hangers; one end of the high hangers is connected to the upper flexible sling, one end is connected to the connecting shaft, and can rotate around the connecting shaft, and one end of the low hangers It is connected with the lower flexible sling, and one end is connected with the connecting shaft, and can rotate around the connecting shaft.

When the high suspension and the low suspension are connected to the connecting shaft at the same time, shaft sleeves can be provided on the high suspension and the low suspension, and the connection shaft is simultaneously passed through the shaft sleeves of the high suspension and the low suspension. High hanging and low hanging can be independently rotated around the connecting shaft.

The length of the lower flexible sling can be adjusted in various ways. Further, the sling assembly also includes four ratchet mechanisms, which are fixed on the low sling and fixedly connected to the end of the lower flexible sling, which can be adjusted The length of the lower flexible harness.

Specifically, as known to those skilled in the art, the ratchet mechanism can realize the unidirectional rotation of the ratchet, and in the present invention, the unidirectional rotation of the ratchet can control the change of the length of the lower flexible sling.

According to the present invention, the end of the lower flexible sling away from the ratchet mechanism is detachably and fixedly connected to the ring belt. The endless belt is used for connecting the objects to be hoisted.

In the present invention, the upper flexible sling and/or the lower flexible sling are nylon flat belts.

Fig. 1 shows the state of the sling assembly disclosed in the present invention during hoisting. It can be seen from Fig. 1 that the sling assembly disclosed in the present invention includes a suspension head 1, an upper flexible sling 2, a high sling 5, a sling body 3, a low sling 6, a lower flexible sling 4, a ratchet mechanism 7, and a ring belt 8 .

Refer to Fig. 3 and Fig. 4 for the specific structure of the hanging head 1. In this embodiment, the hanging head 1 includes a frame 11, and the frame 11 is circular. A card beam 12 is fixed on the frame 11, and both ends of the card beam 12 are fixed on the frame 11, and the frame 11 and the card beam 12 form a "Japanese font" structure. Meanwhile, the frame 11 is also fixed with a hook connection portion 13, the two ends of the hook connection portion 13 are fixed on the frame 11, the hook connection portion 13 forms a ring with the frame 11, and the plane where the hook connection portion 13 is located is the same as the frame 11. The plane is vertical.

Returning to FIG. 1 , during hoisting, the hook 91 of the lifting device hooks the hook connection portion 13 of the lifting head 1 .

In the embodiment shown in Fig. 1, there are two integrated slings, the left frame of the card beam 12, the card beam 12, and the right frame of the card beam 12 are alternately located on both sides of the integrated sling, specifically: the integrated sling is located on the frame 11 The upper plane passes between the card beam 12 and its left frame and extends to the plane below the frame 11 , then bypasses the card beam 12 , passes between the card beam 12 and its right frame and extends to the plane above the frame 11 . The two integrated slings are connected to the hanging head 1 through the above structure, and through the friction between the integrated sling and the frame 11 of the hanging head 1 and the card beam 12, the hanging head 1 can be fixed at any position on the integrated sling. When the head 1 is on the integrated sling, you can pull up the integrated sling at the position of the card beam 12 along the plane direction where the vertical frame 11 is located, and move the hanging head 1 to adjust the position of the hanging head 1 on the integrated sling.

According to the present invention, with the suspension head 1 as the end point, the two integrated suspenders are divided into four upper flexible suspenders 2 . The length of upper flexible suspender 2 can be realized by the position of aforesaid moving hanger 1.

The four upper flexible slings 2 have four ends, and each end is fixedly connected to one end of a high hanger 5 . The high lift 5 is connected to the spreader body 3 .

The specific structure of the spreader body 3 is shown in Fig. 5. In this embodiment, the spreader body 3 is circular and specifically includes two concentric rings, and the two concentric rings are fixed to each other. As understood by those skilled in the art, The spreader body 3 can also be in other shapes, such as a rectangle. As shown in FIG. 5 , with the center of the circular spreader body 3 as the center, four connecting shafts 31 are symmetrically distributed on the spreader body 3 . Both ends of the connecting shaft 31 are fixed on two concentric rings of the spreader body 3 . Moreover, the axes of the connecting shafts 31 pass through the center of the circle of the spreader body 3, that is, the four connecting shafts 31 are divided into two groups of coaxial connecting shafts 31, and the axes where the two groups of coaxial connecting shafts 31 are located are perpendicular to each other. The four points formed by the intersection of the four connecting shafts 31 and the outer ring of the spreader body 3 form a square.

Returning to Fig. 1, the connecting portion between the high crane 5 and the spreader body 3 is the upper connecting portion. In this embodiment, the upper connecting part is the above-mentioned connecting shaft 31 , one end of the four high suspensions 5 is fixedly connected with the upper flexible sling 2 , and the other end is fixed on the connecting shaft 31 and can rotate around the connecting shaft 31 .

At this moment, when the lifting head 1 is lifted, the spreader body 3 can be lifted by the upper flexible sling 2 .

Similarly, those skilled in the art can use three independent upper flexible slings 2 according to the idea of the present invention, one end of which is connected to the upper connection part of the sling body 3, and the other end is passed through an adjustable length device (such as a ratchet or a rope tightener). Connect to the hook 91.

Continuing to refer to Fig. 1, four low hangers 6 are also fixed on the spreader body 3, and the connecting portion between the low hanger 6 and the spreader body 3 is the lower connecting portion. Similarly, in this embodiment, the connecting shaft 31 is simultaneously used as the lower connecting part. One end of the four low hangers 6 is fixedly connected to the four connecting shafts 31 respectively, and can rotate around the connecting shafts 31 .

Referring to FIG. 2 , one end of each of the four low hangers 6 is respectively fixedly connected to the four connecting shafts 31 , and the other end is respectively fixedly connected to the four ratchet mechanisms 7 . Four ratchet mechanisms 7 are connected with four lower flexible suspenders 4 simultaneously. One end of the lower flexible sling 4 is fixed in the ratchet mechanism 7 . The one-way rotation of the ratchet mechanism 7 can control the length of the lower flexible sling 4, that is, the ratchet is rotated, and the ratchet mechanism 7 winds and packs the lower flexible sling 4, thereby shortening the length of the lower flexible sling 4.

One end of each of the four lower flexible suspenders 4 is respectively fixed in the four ratchet mechanisms 7 , and the other ends are respectively detachably connected with an endless belt 8 . The ring belt 8 is fixedly connected to the object 92 to be hung.

In this embodiment, the aforementioned upper flexible sling 2 and lower flexible sling 4 both use nylon flat belts, which are flexible and strong.

Below, the working process of the spreader assembly disclosed by the present invention is described with the whole vehicle as the object 92 to be hung:

Adjust the lifting head 1 to an appropriate position on the integrated sling (realize the effect of adjusting the length of the upper flexible sling 2). The specific method can be: estimate which direction the center of gravity of the whole vehicle is biased (for example, in a general passenger car, the powertrain is located in front of the vehicle, so the center of gravity of the whole vehicle is usually biased towards the front of the vehicle), move the hoist 1 towards the direction close to the front of the vehicle, The length of the upper flexible sling 2 in this direction is shortened.

The four endless belts 8 are fixed on the four lower flexible suspenders 4, and are respectively placed on the four wheels of the vehicle.

Use the hoisting equipment to hook the suspension head 1 and start hoisting. The suspension hook 91 catches the suspension head 1 and slowly rises, the suspension head 1 drives the upper flexible sling 2 to rise, and the upper flexible sling 2 drives the sling body 3 to rise. Then the whole vehicle is hoisted by the low suspension 6, the ratchet mechanism 7, the lower flexible suspension belt 4 and the ring belt 8 which are fixed on the spreader body 3.

At this time, the vehicle is usually in an unbalanced state, and the length of the lower flexible sling 4 is adjusted through the ratchet mechanism 7 to slowly return the vehicle to a horizontal balance state.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (7)

1. a spreader assembly, is characterized in that, comprises suspender body, multiple flexible suspender belt and multiple lower flexible suspender belt; Described suspender body is framework, suspender body have the upper connecting portion identical with upper flexible suspender belt quantity and the lower connecting portion identical with lower flexible suspender belt quantity, described multiple upper connecting portion becomes fixing polygon distribution, and described multiple lower connecting portion becomes fixing polygon distribution; Described flexible suspender belt one end is fixedly connected with upper connecting portion, and the other end is for connecting lifting appliance; Described lower flexible suspender belt one end is fixedly connected with lower connecting portion, and the other end is for connecting thing to be hung; The length Independent adjustable of described flexible suspender belt and lower flexible suspender belt;

Described flexible suspender belt has four, four upper connecting portion quadrangularly distributions;

Described spreader assembly also comprises and hangs head for what connect lifting appliance; In described four upper flexible suspender belts, two the upper flexible suspender belts relative along quadrangle diagonal line are integrated, and form two one suspender belts; Described hang head be arranged at one suspender belt on and can fix by diverse location on one suspender belt;

The described head that hangs comprises frame and be fixed on frame, for connecting the suspension hook connecting portion of lifting appliance, have in described frame the frame of at least one Ka Liang, Ka Liang side, Ka Liang, card beam opposite side frame be staggeredly successively positioned at described one suspender belt both sides.

2. spreader assembly according to claim 1, is characterized in that, described upper connecting portion is upper adapter shaft, and described lower connecting portion is lower adapter shaft; Described flexible suspender belt end is the collar, and upper adapter shaft is arranged in the collar, and upper flexible suspender belt can rotate around upper adapter shaft, and lower flexible suspender belt is connected to lower adapter shaft.

3. spreader assembly according to claim 1, is characterized in that, described lower flexible suspender belt has four; Described suspender body have four adapter shafts, using adapter shaft simultaneously as upper connecting portion and lower connecting portion; Four adapter shafts become fixing square profile; Four upper flexible suspender belts are connected directly to four adapter shafts, and under four, flexible suspender belt is connected directly to four adapter shafts.

4. spreader assembly according to claim 1, is characterized in that, described lower flexible suspender belt has four; Described suspender body have four adapter shafts, using adapter shaft simultaneously as upper connecting portion and lower connecting portion; Four adapter shafts become fixing square profile; Four upper flexible suspender belts are connected to four adapter shafts respectively, and under four, flexible suspender belt is connected to four adapter shafts respectively;

Described spreader assembly also comprises four and highly hangs hang low with four; One end that described height hangs is connected with upper flexible suspender belt, and the other end is connected with adapter shaft, and can rotate around adapter shaft, and described low one end of hanging is connected with lower flexible suspender belt, and the other end is connected with adapter shaft, and can rotate around adapter shaft;

Described height hangs and low hanging on is provided with axle sleeve, and adapter shaft is arranged in height simultaneously and hangs and in the low axle sleeve hung.

5. spreader assembly according to claim 4, is characterized in that, described spreader assembly also comprises four ratchet devices, and described ratchet device is fixed on low hanging on, and is connected with lower flexible suspender belt end winding support, the length of flexible suspender belt under adjustable.

6. spreader assembly according to claim 5, is characterized in that, described lower flexible suspender belt is fixedly connected with endless belt detouchable away from one end of ratchet device.

7. spreader assembly according to claim 1, is characterized in that, described flexible suspender belt and/or lower flexible suspender belt are nylon bandlet.