A vacuum metal hose hanger

Abstract

The vacuum metal hose sling provided by the present invention comprises: a main beam, a plurality of groups of casters arranged on the main beam at intervals along the first direction of the length of the main beam, and a fixing mechanism arranged on the main beam for fixing the vacuum metal hose to the main beam; the main beam has a plurality of support plates for supporting the vacuum metal hose during lifting and transportation operations, and vertical plates are arranged between the support plates, and the vertical plates are also provided with end lifting holes and center lifting holes; the lower part of the main beam is used to connect with the plurality of groups of casters, and the position where the plurality of groups of casters are connected to the main beam is provided with a rib plate; the rib plate is provided with side lifting holes for use as lifting points of the sling after installing a shackle; each group of casters includes a first caster and a second caster arranged on both sides of the width direction of the main beam; the vacuum metal hose is fixed by the fixing mechanism and suspended between the first caster and the second caster at the bottom end of the lower part of the main beam. The sling of the present invention can avoid bearing the concentrated load generated when the fiber sling is lifted, so that the performance of the vacuum hose is intact.

Description

Technical Field

[0001] The invention relates to the technical field of aerospace launch vehicles, in particular to a vacuum metal hose hanger. Background Art

[0002] During the transportation and assembly of the vacuum metal hose, it is necessary to use a hoist to lift the metal hose for transportation or assembly. When the vacuum metal hose is bundled and hoisted, the metal hose is very easy to fall too much and bend excessively, which will cause damage to the tube body and cause safety accidents. For example, the method currently used more in China is to use ropes (such as fiber belts) to tie and then lift the hose. This method will cause stress concentration in long pipelines, resulting in problems such as twisting of the pipeline or permanent deformation and damage of the bellows, which will lead to the failure of the vacuum metal hose suspension. Therefore, it is impossible to provide effective and stable protection for the vacuum metal hose during transportation or assembly.

[0003] Therefore, it is urgent to provide a hanger that can provide stable protection for the vacuum metal hose. Summary of the invention

[0004] In order to solve the above technical problems in the related art, the present invention proposes a vacuum metal hose hanger, which can combine multiple basic vacuum metal hose hangers to meet the lifting of vacuum metal hoses with different tube lengths, and also has some functions of ground transportation of vacuum metal hoses. It ensures that the vacuum metal hose is in a good free state during the lifting and transportation process, avoiding the concentrated load generated by the fiber sling during lifting, so that the vacuum hose can maintain good performance and is not easy to deform and damage.

[0005] A vacuum metal hose hanger provided by the present invention comprises: a main beam, a plurality of sets of casters arranged on the main beam at intervals along a first direction of the length of the main beam, and a fixing mechanism arranged on the main beam for fixing the vacuum metal hose on the main beam;

[0006] The main beam includes an upper part and a lower part; the lower part is a box-shaped structure, and the upper part includes a plurality of sets of wall panels arranged on both sides of the upper end surface of the lower part in the length direction; a support plate connected to each wall panel is provided at the top of each set of wall panels, which is used to support the vacuum metal hose during hoisting and transportation operations;

[0007] There is a discontinuity between each group of wall panels, and the discontinuity position has a vertical plate arranged at the middle position of the upper end surface of the lower part of the main beam; the vertical plate is arranged parallel to the first direction; both ends of the vertical plate are provided with end hanging holes used as hanging points after assembling the shackle, and the middle position of the vertical plate is provided with a central hanging hole used as a hanging point after assembling the shackle;

[0008] The lower part of the main beam is used to connect with the multiple sets of casters, and a rib plate is provided at the position where the multiple sets of casters are connected to the main beam; the rib plate is provided with a side lifting hole, which is used to install a shackle as a lifting point of the lifting device;

[0009] Each set of casters includes a first caster and a second caster which are arranged opposite to each other on both sides of the main beam in the width direction; the vacuum metal hose is fixed by the fixing mechanism and then suspended between the first caster and the second caster at the bottom end of the lower part of the main beam.

[0010] In one embodiment, the cross section of the support plate perpendicular to the first direction is V-shaped; the angle of the V-shape ranges from 100° to 120°.

[0011] In one embodiment, the fixing mechanism includes: a plurality of ear plates evenly arranged on both sides of the waist width direction of the main beam along the first direction and a strapping belt that uses the ear plates as anchor points to fix the vacuum metal hose.

[0012] In one embodiment, the ear plate is a double-sided hook-shaped thin plate structure; one side of the hook-shaped thin plate structure is used to fix the strapping belt when lifting the vacuum metal hose, and the other side of the hook-shaped thin plate structure is used to fix the strapping belt when hanging the vacuum metal hose.

[0013] In one embodiment, the distance between the relative inner sides of the first caster and the second caster is greater than the outer diameter of the vacuum metal hose to ensure that the vacuum metal hose is suspended between the first caster and the second caster at the bottom end of the lower part of the main beam.

[0014] In one embodiment, the first caster and the second caster respectively include a long leg with one end connected to the lower part of the main beam, and a universal wheel connected to the other end of the long leg.

[0015] In one embodiment, the universal wheel has a locking structure for limiting the wheel direction, so as to limit the pushing of the entire lifting device during the transportation of the vacuum metal hose.

[0016] In one embodiment, the length of the long legs is greater than the outer diameter of the vacuum metal hose, so as to ensure that when the vacuum metal hose is hung at the bottom end of the lower part of the main beam, there is a gap between the vacuum metal hose and the ground.

[0017] In any of the above embodiments, the main beam at least includes a first main beam and a second main beam connected in series as an integral whole, the multiple sets of casters are respectively arranged on the first main beam and the second main beam along the first direction, and the fixing mechanism is used to fix the vacuum metal hose on the first main beam and the second main beam at the same time; the longer vacuum metal hose is arranged on the support plate and / or suspended at the lower bottom end of the first main beam and the second main beam, and is tied and fixed by the fixing mechanism and then hoisted through the hanging point, or is pushed and transported by the casters.

[0018] In any of the above embodiments, the main beam at least includes a first main beam and a second main beam connected in parallel by a connecting crossbeam, the plurality of casters are respectively arranged on the first main beam and the second main beam along a first direction, and the fixing mechanism is used to fix the vacuum metal hose on the first main beam and the second main beam at the same time. The longer vacuum metal hose is coiled on the support plate and / or coiled and suspended at the bottom of the lower part of the first main beam and the second main beam, and is hoisted through the hoisting point after being tied and fixed by the fixing mechanism, or is pushed and transported by the casters.

[0019] The vacuum metal hose hanger of the present invention has the advantages of large hoisting range, multiple functions, and can be assembled and used in multiple forms. The basic vacuum metal hose hanger can also be combined to meet the hoisting requirements of vacuum metal hoses with different tube lengths.

[0020] The sling of the present invention can realize both the hanging lifting and supporting lifting of the vacuum metal hose, truly realizing the use of a set of slings to meet various lifting requirements, and the sling of the present application also has some functions of ground transportation.

[0021] The sling of the present application is simple and convenient to assemble, easy to use, and greatly reduces the labor intensity of operators. At the same time, it also ensures that the vacuum metal hose is in a good free state during lifting and transportation, avoiding the concentrated load generated by the fiber sling during lifting, thereby making the vacuum hose performance intact and reducing the risk of damage to the real gold hollow metal hose during lifting and transportation.

[0022] Those skilled in the art will recognize additional features and advantages upon reading the detailed description and upon viewing the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a basic structural schematic diagram of a vacuum metal hose hanger according to an embodiment of the present invention.

[0025] Figure 2 It is a basic structural schematic diagram of the vacuum metal hose hanger and the vertical plane in the first direction according to an embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of a basic vacuum metal hose hanger supporting a vacuum metal hose according to an embodiment of the present invention.

[0027] Figure 4 It is a schematic diagram of a basic vacuum metal hose hanger suspending a vacuum metal hose according to an embodiment of the present invention.

[0028] Figure 5 It is a schematic diagram of the first combined structure of the vacuum metal hose hanger according to an embodiment of the present invention.

[0029] Figure 6 It is a schematic diagram of a second combined structure of the vacuum metal hose hanger according to an embodiment of the present invention.

[0030] Figure 7 It is a schematic diagram of suspending a vacuum metal hose using a hanger in the second combination form of an embodiment of the present invention.

[0031] Figure 8 It is a schematic diagram of a third combined structure of the vacuum metal hose hanger according to an embodiment of the present invention.

[0032] Fig. 9 A schematic diagram of a vacuum metal hose suspended by a hanger in the third combination form of an embodiment of the present invention.

[0033] Fig.10 A schematic diagram of suspending a vacuum metal hose using a hanger in the third combination form of an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and through specific embodiments. Spatial relationship terms such as "below", "below", "under...", "low", "above", "on...", "high", etc. are used to facilitate the description to explain the positioning of an element relative to a second element, indicating that these terms are intended to cover different orientations of the device in addition to orientations different from those shown in the figures. In addition, for example, "an element is above / below another element" can mean that the two elements are in direct contact, or it can mean that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and should not be regarded as limitations. Similar terms represent similar elements throughout the description.

[0035] See also Figure 1 The present invention provides a vacuum metal hose hanger, comprising: a main beam 1, a plurality of groups of casters 2 arranged on the main beam 1 at intervals along the first direction S of the length of the main beam 1, and a fixing mechanism arranged on the main beam 1 and used to fix the vacuum metal hose on the main beam 1. The main beam 1 includes an upper part 11 and a lower part 12, wherein the upper part 11 and the lower part 12 can be integrally formed or welded together. The lower part 12 is a hollow box-shaped structure, which can be a box-shaped structure with six faces or only have four faces in the length direction. Such an arrangement can reduce the weight of the entire hanger and facilitate the production and assembly of the hanger. The upper part 11 includes a plurality of groups of wall panels 111 arranged on both sides of the upper end face of the lower part 12 in the length direction, and each group of wall panels 111 has a discontinuity 112, that is, no wall panel 111 is arranged at the discontinuity position. Among them, a support plate 3 connected to the two wall panels 111 of the group is provided at the top of each group of wall panels 111. The support plates at the top of each group of wall panels 111 are independently arranged to support the vacuum metal hose together during hoisting and transportation operations.

[0036] There is a discontinuity 112 between each group of wall panels 111, and the position of the discontinuity 112 has a vertical plate 4 arranged in the middle position of the upper end surface of the lower part 12 of the main beam (for example, in the middle position in the width direction of the main beam). For example, the vertical plate 4 is arranged parallel to the first direction S. That is to say, in the first direction S, there is a vertical plate 4 parallel to the first direction S between a certain group of wall panels 111 and an adjacent group of wall panels 111 (the length direction of the vertical plate is consistent with the first direction), and the vertical plate 4 is located on the central axis in the length direction of the main beam 1. It should be noted that the vertical plate 4 can also be a whole vertical plate arranged on the upper end surface of the lower part 12 of the main beam, and the height of the vertical plate 4 is lower than the height of the lowest surface of the support plate 3. Therefore, at the position where the support plate 3 is arranged, the vertical plate 4 can be hidden under the support plate 3.

[0037] The ends of the vertical plate 4 along the first direction are also provided with end lifting holes 41 used as lifting points after the shackles are assembled, and the middle position of the vertical plate is provided with a center lifting hole 42 used as a lifting point after the shackles are assembled. After the shackles are assembled to the end lifting holes 41 and the center lifting holes 42, the entire lifting device and the vacuum metal hose tied to the main beam by the fixing mechanism can be lifted together to complete the lifting of the vacuum metal hose. The end lifting holes and the center lifting holes can be used at different times, and the appropriate lifting holes can be selected as lifting points according to the lifting requirements.

[0038] Furthermore, the lower part 12 of the main beam 1 is used to connect with multiple sets of casters 2, and the casters are used to realize the transportation and promotion of the sling itself and the vacuum metal hose. Among them, a rib plate 5 is also provided at the position where the multiple sets of casters 2 are connected to the lower part 12 of the main beam 1. The rib plate 5 has a side lifting hole 51, which is connected with the shackle to form a lifting point. When the lifting operation is performed after supporting the metal hose, the end lifting hole and the center lifting hole are blocked by the metal hose. At this time, the side lifting hole can be used as a lifting point after the shackle is assembled.

[0039] See also Figure 1 and Figure 2 Each set of casters 2 includes a first caster 21 and a second caster 22 which are arranged on both sides of the main beam 1 in the width direction. The vacuum metal hose 9 can be fixed by a fixing mechanism and then suspended between the first caster 21 and the second caster 22 at the bottom end of the lower part 12 of the main beam, and the vacuum metal hose is fixed by the fixing mechanism. For the hoist equipped with the vacuum metal hose 9, the shackle 7 installed in the center hanging hole 42 and the end hanging hole 41 can be used as the hanging point for hoisting, and the shackle 7 installed in the center hanging hole 42 and the side hanging hole 51 can also be used as the hanging point for hoisting.

[0040] The vacuum metal hose hanger of the embodiment of the present invention has both hanging and lifting load-bearing capacity, and can realize hoisting or transportation after supporting the vacuum metal hose, and can also realize hoisting or transportation after hanging the vacuum metal hose, truly realizing that one hanger takes into account multiple hoisting requirements. The application of the vacuum metal hose hanger of the embodiment of the present invention ensures that the vacuum metal hose is in a good free state during the hoisting and transportation process, avoiding the concentrated load generated by the fiber sling hoisting, thereby keeping the performance of the vacuum hose intact and reducing the risk of damage to the real metal hose during the hoisting and transportation process.

[0041] Continue to see Figure 1 and Figure 2 In one embodiment, the cross section of the support plate 4 perpendicular to the first direction S is V-shaped. The V-shaped structure can better support the vacuum metal hose and effectively prevent the vacuum metal hose from rolling or even falling off on the support plate. After multiple tests and verifications, it is known that the angle range of the V-shaped cross section can be set between 90° and 130°. In order to simplify the manufacturing and assembly difficulty of the support plate, the V-shaped cross section can be set between 100° and 120°.

[0042] See also Figure 2In the above embodiment, the fixing mechanism includes: a plurality of lugs 6 evenly arranged on both sides of the waist of the main beam in the width direction along the first direction S and a strapping belt that uses the lugs 6 as anchor points to fix the vacuum metal hose. The waist of the main beam can be defined as the position of the lower part 12 of the main beam close to the upper part 11 of the main beam. A plurality of lugs 6 are arranged at intervals on one side of the waist of the main beam in the width direction, and the same number of lugs 6 are matched at the corresponding positions on the other side. Specifically, when the metal hose needs to be supported for hoisting (such as Figure 3 ), the metal hose can be placed on the support plate, and the binding belt can be fastened to the two ear plates arranged opposite to each other on both sides of the waist of the main beam in the width direction, so as to bind and fix the metal hose on the support plate.

[0043] Furthermore, the ear plate 6 is a double-sided hook-shaped thin plate structure. It can be divided into a first hook-shaped thin plate structure 61 and a second hook-shaped thin plate structure 62. The first hook-shaped thin plate structure 61 can be used to fix the strapping when lifting the vacuum metal hose, and the second hook-shaped thin plate structure 62 can be used to fix the strapping when hanging the vacuum metal hose. Alternatively, when lifting the vacuum metal hose alone or hanging the vacuum metal hose alone, the two ends of the strapping can be respectively tied to the first hook-shaped thin plate structure and the second hook-shaped thin plate structure of the same ear plate. For example, when hoisting after hanging the vacuum metal hose, one way is: the vacuum metal hose can be tied with a strapping tape and one end of it can be fixed to the first hook-shaped thin plate structure of the ear plate, and the other end can be fixed to the second hook-shaped thin plate structure of the same ear plate. Another way is: the vacuum metal hose can be tied with a strapping tape and one end of it can be fixed to the second hook-shaped thin plate structure of the first ear plate, and the other end can be fixed to the second hook-shaped thin plate structure of the second ear plate, wherein the first ear plate and the second ear plate are correspondingly arranged on both sides of the main beam.

[0044] Alternatively, in the above embodiment, the ear plate may be replaced by a rope tightener provided on the main beam to facilitate the tightening and binding of the strapping belt.

[0045] In one embodiment, in order to realize the hanging and lifting of the vacuum metal hose, the distance between the relative inner sides of the first caster 21 and the second caster 22 can be made larger than the outer diameter of the vacuum metal hose, thereby ensuring that the vacuum metal hose is suspended between the first caster and the second caster at the bottom end of the lower part of the main beam, and also preventing the casters from scratching the outer wall of the vacuum metal hose.

[0046] Continue to see Figure 2Furthermore, the first caster 21 and the second caster 22 respectively include: a long leg 211 connected to the lower part of the main beam at one end, and a universal wheel 212 connected to the other end of the long leg 211. It should be noted that when the required distance between the relative inner sides of the first caster 21 and the second caster 22 is greater than the width of the main beam 1, a connecting piece 8 of appropriate length can be connected to the lower part 12 of the main beam 1, and the long leg 211 can be connected to the lower part 12 of the main beam using the connecting piece 8. The connecting piece 8 can be arranged at the bottom of the first main beam to assist in supporting the main beam. The vacuum metal hose hanger of the embodiment of the present invention can use a universal wheel to realize the free transportation of the hanger between different use sites.

[0047] Furthermore, in view of the flexibility and multi-directionality of the universal wheel, a locking structure for limiting the wheel direction can be provided on the universal wheel to ensure that the universal wheel can be locked, thereby limiting the pushing of the entire hoist during the transportation of the vacuum metal hose.

[0048] Continue to see Figure 2 In the above embodiment, the leg length of the long leg 211 is greater than the outer diameter of the vacuum metal hose, so that the vacuum metal hose can be hung at the bottom end of the lower part of the main beam ( Figure 4 ), there is a gap between the vacuum metal hose and the ground to prevent the vacuum metal hose from rubbing against the ground. Given that the universal wheel itself has a height, even if the vacuum metal hose is separated from the main beam by a certain distance due to gravity, it can still effectively avoid contact with the ground.

[0049] See also Figure 5 and Figure 6 In the above embodiment, the main beam at least includes a first main beam 100 and a second main beam 200 connected in series, a plurality of casters 2 respectively arranged on the first main beam 100 and the second main beam 200 along the first direction, and a fixing mechanism. The first main beam 100 and the second main beam 200 can be directly connected or connected through a connecting crossbeam 300. The fixing mechanism is used to fix the vacuum metal hose 9 on the first main beam 100 and the second main beam 200 at the same time. If the length of the vacuum metal hose 9 is greater than the sum of the lengths of the first main beam and the second main beam, the third main beam can be connected in series at the other end of the second main beam, and so on.

[0050] See also Figure 5 and Figure 7 When the vacuum metal hose hanger of the embodiment of the present invention is used, the longer vacuum metal hose can be sequentially arranged on the support plate of the first main beam and the support plate of the second main beam ( Figure 7 ), and / or suspended at the lower ends of the first main beam and the second main beam ( Figure 5), and after being tied and fixed by a fixing mechanism, it is hoisted through a hanging point, or pushed and transported by casters. It can be seen that the vacuum metal hose hoist of the embodiment of the present invention has good expansibility and combination, and a wide range of applications. The basic vacuum metal hose hoist can be combined to form a hoisting system that can meet the requirements of vacuum metal hoses with different tube lengths, and also realizes some functions of vacuum metal hoses on the ground for transportation.

[0051] See also Figure 8 Alternatively, in another embodiment, the first main beam 100 and the second main beam 200 can be connected in parallel as a whole by using a connecting crossbeam 400, and multiple sets of casters 2 are respectively arranged on the first main beam 100 and the second main beam 200 along the first direction, and the fixing mechanism is used to fix the vacuum metal hose on the first main beam 100 and the second main beam 200 at the same time. There are multiple connecting crossbeams 400, which are arranged in parallel between the first main beam 100 and the second main beam 200, so that the entire assembled sling is more stable and reliable. If the length of the vacuum metal hose is greater than the sum of the lengths of the first main beam and the second main beam, the third main beam can be connected in parallel at the other end of the second main beam, so that the metal hose is serpentinely coiled and arranged on the sling, and so on. The length of the connecting crossbeam can be set according to the hardness and ductility of the vacuum metal hose.

[0052] See also Fig. 9 and Fig.10 When the vacuum metal hose hanger of the embodiment of the present invention is used, the longer vacuum metal hose can be coiled and set on the support plate of the first main beam and the support plate of the second main beam ( Fig. 9 ), and / or the coil is suspended at the bottom end of the lower part of the first main beam and the bottom end of the lower part of the second main beam ( Fig.10 ), and after being tied and fixed by a fixing mechanism, it is hoisted through a lifting point, or pushed and transported by the casters. It can be seen that the vacuum metal hose hoist of the embodiment of the present invention has good expansibility and combination, and a wide range of applications. The basic vacuum metal hose hoist can be combined to form a hoisting system that can meet the requirements of vacuum metal hoses with different tube lengths, and also realizes some functions of vacuum metal hoses on the ground for transportation.

[0053] The above embodiments can be combined with each other and have corresponding technical effects.

[0054] A vacuum metal hose hanger provided in an embodiment of the present invention integrates the functions of vacuum metal hose support and hoisting, suspension and hoisting, pushing and transporting, and multi-mode combination and expansion and applicability, thereby optimizing the structural layout and usage. The vacuum metal hose hanger of the present application occupies a small area and is easy to install and transport. It is not restricted by the site, is convenient for rapid deployment at a launch site or assembly plant, and has a very wide range of applications. Moreover, the vacuum metal hose hanger proposed in the present application can also be used to hoist longer metal hoses, has a wide range of applications, greatly improves the safety and stability of hoisting vacuum metal hoses, reduces manual labor intensity, and also has the characteristics of functional integration, multi-task parallelism, and high reliability, ensuring that the performance and status of the vacuum metal hose after hoisting are still intact.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum metal hose hanger, characterized in that: include: A main beam, a plurality of sets of casters spaced apart on the main beam along a first direction of the length of the main beam, and a fixing mechanism disposed on the main beam and used for fixing the vacuum metal hose on the main beam; The main beam includes an upper part and a lower part; the lower part is a box-shaped structure, and the upper part includes a plurality of sets of wall panels arranged on both sides of the upper end surface of the lower part in the length direction; a support plate connected to each wall panel is provided at the top of each set of wall panels, which is used to support the vacuum metal hose during hoisting and transportation operations; There is a discontinuity between each group of wall panels, and the discontinuity position has a vertical plate arranged on the upper end surface of the lower part of the main beam; the vertical plate is provided with end hanging holes at both ends along the first direction for being used as hanging points after the shackle is assembled, and the middle position of the vertical plate is provided with a central hanging hole for being used as a hanging point after the shackle is assembled; The lower part of the main beam is used to connect with the multiple sets of casters, and a rib plate is provided at the position where the multiple sets of casters are connected to the main beam; the rib plate is provided with a side lifting hole, which is used to install a shackle as a lifting point of the lifting device; Each set of casters includes a first caster and a second caster which are arranged opposite to each other on both sides of the main beam in the width direction; the vacuum metal hose is fixed by the fixing mechanism and then suspended between the first caster and the second caster at the bottom end of the lower part of the main beam.

2. The vacuum metal hose hanger according to claim 1, characterized in that: The cross section of the support plate perpendicular to the first direction is V-shaped; the angle of the V-shape ranges from 100° to 120°.

3. The vacuum metal hose hanger according to claim 2, characterized in that: The fixing mechanism comprises: a plurality of ear plates evenly arranged on both sides of the waist of the main beam in the width direction along the first direction and a strapping belt that uses the ear plates as anchor points to fix the vacuum metal hose.

4. The vacuum metal hose hanger according to claim 3, characterized in that: The ear plate is a double-sided hook-shaped thin plate structure; one side of the hook-shaped thin plate structure is used to fix the strapping belt when lifting the vacuum metal hose, and the other side of the hook-shaped thin plate structure is used to fix the strapping belt when hanging the vacuum metal hose.

5. The vacuum metal hose hanger according to claim 1, characterized in that: The distance between the relative inner sides of the first caster and the second caster is greater than the outer diameter of the vacuum metal hose to ensure that the vacuum metal hose is suspended between the first caster and the second caster at the bottom end of the lower part of the main beam.

6. The vacuum metal hose hanger according to claim 5, characterized in that: The first caster and the second caster respectively include a long leg with one end connected to the lower part of the main beam, and a universal wheel connected to the other end of the long leg.

7. The vacuum metal hose hanger according to claim 6, characterized in that: The universal wheel has a locking structure for limiting the wheel direction, which is used to limit the pushing of the entire lifting device when the vacuum metal hose is transported.

8. The vacuum metal hose hanger according to claim 7, characterized in that: The leg length of the long leg is greater than the outer diameter of the vacuum metal hose, so as to ensure that when the vacuum metal hose is hung at the bottom end of the lower part of the main beam, a gap is left between the vacuum metal hose and the ground.

9. The vacuum metal hose hanger according to claim 3 or 4, characterized in that: The main beam at least includes a first main beam and a second main beam connected in series as an integral whole, the multiple sets of casters are respectively arranged on the first main beam and the second main beam along the first direction, and the fixing mechanism is used to fix the vacuum metal hose on the first main beam and the second main beam at the same time; the longer vacuum metal hose is arranged on the support plate and / or suspended at the lower bottom end of the first main beam and the second main beam, and is hoisted through the hanging point after being tied and fixed by the fixing mechanism, or is pushed and transported by the casters.

10. The vacuum metal hose hanger according to claim 3 or 4, characterized in that: The main beam at least includes a first main beam and a second main beam which are connected in parallel as a whole by a connecting cross beam, the multiple sets of casters are respectively arranged on the first main beam and the second main beam along a first direction, and the fixing mechanism is used to fix the vacuum metal hose on the first main beam and the second main beam at the same time; the longer vacuum metal hose is coiled and arranged on the support plate and / or the coil is suspended and arranged at the bottom end of the lower part of the first main beam and the second main beam, and is hoisted through the hanging point after being tied and fixed by the fixing mechanism, or is pushed and transported by the casters.

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