A movable basket system of a shallow silo roof and an operating method thereof

Abstract

The application discloses a shallow round warehouse roof translatable basket system, a warehouse roof ring beam at the bottom of the shallow round warehouse roof is provided with a circle of guide rails in the circumferential direction, the guide rails are provided with through grooves arranged in the circumferential direction of the guide rails, two groups of pulley blocks are respectively arranged on the bottom walls on the two sides of the through grooves, the pulley block load-bearing shafts of the pulley blocks are led out and are provided with plugs, the bottom ends of the plugs are provided with cross beams arranged along the slope of the shallow round warehouse roof, the two cross beams are connected with large rollers arranged along the edges of the shallow round warehouse roof, each cross beam is connected with the front and rear rotating shafts of the large roller through a fixing rod, the working steel wires at the two ends of the basket are respectively connected with the corresponding end portions of the cross beams, and the cross beams are further provided with limiting mechanisms for limiting the large rollers after the large rollers are moved into position. The application further discloses a shallow round warehouse roof translatable basket system operation method. The application solves the technical problem that the installation force point of the basket cannot be moved, achieves the technical purpose that the basket can be translatable during use, and can be widely applied in the field of warehouse buildings.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of warehouse buildings, in particular to a shallow silo roof translatable basket system and its operation method. BACKGROUND

[0002] In the process of decorating the outer wall of a shallow silo, a basket is needed. The traditional basket has a counterweight and a support frame. The basket with a counterweight is not suitable for the conical inclined roof of a shallow silo. When multiple baskets need to be installed simultaneously, the narrow flat area of the shallow silo roof cannot accommodate multiple counterweights. When the basket needs to be moved, the construction operation becomes very difficult due to the limitation of the conical inclined roof. Therefore, it is necessary to invent a shallow silo roof translatable basket installation and construction technology. SUMMARY

[0003] The purpose of the present application is to overcome the shortcomings of the background art and provide a shallow silo roof translatable basket system and its operation method, which solves the technical problem of the installation force point of the basket being unable to move and achieves the technical purpose of the basket being able to translate during use.

[0004] The shallow silo roof translatable basket system provided by the present application comprises a shallow silo roof and a basket suspended by working steel wires at both ends. A silo roof ring beam at the bottom of the shallow silo roof is provided with a ring of guide rails in the circumferential direction. The guide rails are inclined square tube structures. One side of the guide rails facing the edge of the shallow silo roof is provided with a through groove arranged in the circumferential direction of the guide rail. Two groups of pulley blocks connected by pulley bearing shafts are arranged on the bottom walls on both sides of the through groove in the length direction of the through groove. The pulley bearing shafts pass through the through groove and are provided with pins at the bottom. Two pins are respectively provided with horizontal beams arranged along the slope of the inclined roof of the shallow silo and extending beyond the edge of the shallow silo roof at the bottom. The portions of the two horizontal beams above the edge of the shallow silo roof are respectively connected to large rollers making circular motion along the edge of the shallow silo roof by fixed rods. Each horizontal beam is connected to the front and rear shafts of the large roller by two fixed rods. The working steel wires at both ends of the basket are connected to the ends of the corresponding horizontal beams. The horizontal beams are also provided with limiting mechanisms for limiting the large rollers when the large rollers are in position.

[0005] In the above technical solution, the bottom of each horizontal beam is provided with a plurality of small rollers coaxial and arranged from top to bottom along the slope of the inclined roof of the shallow silo. The small rollers are coaxially arranged with the corresponding horizontal beams.

[0006] In the above technical solution, the large roller and the small roller at the bottom of each horizontal beam are connected by a transmission shaft.

[0007] In the above technical solution, a drive motor is arranged on each transmission shaft and connected to the power end.

[0008] In the technical scheme, the limiting mechanism has an upper leg connected vertically with each bottom end of the cross beam and connected with the big roller shaft, and a door-shaped frame is symmetrically arranged on both sides of the upper leg, and a jack coaxially connected with a power end is symmetrically arranged at both ends of the door-shaped frame.

[0009] In the technical scheme, the guide rail is connected with the ring beam of the silo top through a guide rail support fixed on the silo top.

[0010] In the technical scheme, the guide rail support comprises a plurality of triangular supports with a triangular cross section and located at the same height and uniformly distributed along the sidewall of the ring beam of the silo top, the vertical surface of the triangular support is fixedly connected with the sidewall of the ring beam of the silo top, the horizontal surface of the triangular support is fixedly connected with the bottom surface of the eave of the silo top, the guide rail is fixedly connected with the outer side of the inclined surface of the triangular support, the guide rail is formed by a plurality of curved square steel pipes connected through guide rail joints, the guide rail joint is connected with the outer side of the inclined surface of the triangular support, and the square steel pipe is connected with the guide rail joint through a press-fit bolt.

[0011] In the technical scheme, the vertical surface of each triangular support is provided with a plurality of clamping grooves from top to bottom, the clamping grooves corresponding to all the triangular supports are located at the same height, the clamping grooves located at the same height are connected through the same steel wire rope, and each steel wire rope is tightly matched with the ring beam of the silo top and the corresponding clamping groove.

[0012] In the technical scheme, the horizontal surface of each triangular support is provided with a horizontal hanging plate connected with the bottom end of the horizontal surface, the horizontal hanging plate has a horizontally placed U-shaped structure, the U-shaped structure is tightly attached to the wall surface of the eave of the silo top, each horizontal hanging plate is provided with a clamping groove at the top end, the clamping grooves at the top ends of all the horizontal hanging plates are connected through a steel wire rope of the silo top, the basket is provided with a safety steel wire rope connected with the corresponding end of the cross beam at each end, the basket is provided with a basket driving motor for controlling the working steel wire rope and the safety steel wire rope at one end, each cross beam is provided with a reinforcing steel wire rope passing through the top end of the upper leg at both ends, and the big roller is located directly above the silo wall.

[0013] The application further provides an operation method of the translatable basket system on the top of the shallow silo, which has the following steps: S1, when the basket is working, the jack extends the supporting leg, the base of the jack moves downward until the base of the jack is supported on the top plate of the shallow silo and the bottom of the large roller is lifted off the top plate, so that the stability of the basket suspension system is maintained; S2, when the basket needs to be translocated, the length of the supporting leg of the jack is shortened so that the base of the jack is lifted upward until the bottom of the large roller falls on the top plate; S3, the driving motor in the middle of the two beams is started, the driving motor drives the two beams to move at the same angular velocity around the center of the shallow silo, the pulley block at the rear end of the beam moves in the guide rail, and the working steel wire rope at the front end of the beam drives the basket to move horizontally; S4, when the basket is translocated to the appropriate position, the supporting leg of the jack is extended, the base of the jack moves downward until the base of the jack is supported on the top plate and the bottom of the large roller is lifted off the top plate, so that the stability of the basket suspension system is maintained; S5, after the stability of the basket suspension system is maintained, the basket normally works.

[0014] The translatable basket system on the top of the shallow silo and the operation method thereof have the following beneficial effects:

[0015] 1. The transverse hanging plate is used on the guide rail support, which solves the technical problem that the guide rail support is difficult to fix on the top ring beam of the silo and provides a stable fulcrum for the guide rail support.

[0016] 2. The annular guide rail is installed on the top ring beam of the silo, which solves the technical problem that the basket cannot be translocated during use and provides convenience for the construction of the shallow silo basket. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an overall structure perspective view of the translatable basket system on the top of the shallow silo according to the embodiment 1 or the embodiment 2 of the application.

[0018] Figure 2 It is an overall structure sectional view of the translatable basket system on the top of the shallow silo according to the embodiment 1 or the embodiment 2 of the application.

[0019] Figure 3 It is a forward structure perspective view of the guide rail, the guide rail support and the flat top of the shallow silo in the embodiment 3 of the translatable basket system on the top of the shallow silo according to the application.

[0020] Figure 4 It is a top structure perspective view of the guide rail, the guide rail support and the flat top of the shallow silo in the embodiment 3 of the translatable basket system on the top of the shallow silo according to the application.

[0021] Figure 5 It is a structure sectional view of the guide rail, the guide rail support and the flat top of the shallow silo in the embodiment 3 of the translatable basket system on the top of the shallow silo according to the application.

[0022] Figure 6Figure 3 is a perspective view of the front structure of the guide rail and guide rail support in Embodiment 3 of the transverse movable basket system of the shallow silo top.

[0023] Figure 7 Figure 4 is a schematic diagram of the overall process of the operation method of the transverse movable basket system of the shallow silo top. DETAILED DESCRIPTION

[0024] The present application will be further described in detail below with reference to the accompanying drawings and embodiments, but the embodiments should not be understood as limiting the present application.

[0025] Embodiment 1

[0026] Referring to Figures 1 to 2 , the transverse movable basket system of the shallow silo top comprises a shallow silo top and a basket 19 hoisted by working steel wires 17 at both ends, and a top ring beam 23 at the bottom of the shallow silo top is provided with a ring of guide rails 4 in the circumferential direction. In one or more embodiments, the guide rails 4 are connected to the top ring beam 23 through guide rail supports 1 fixed to the shallow silo top. The guide rails 4 are inclined square tube structures, one side of the guide rails 4 towards the edge of the shallow silo top is provided with a through slot arranged in the circumferential direction of the guide rails 4, and two groups of pulley blocks 5 connected by pulley bearing shafts 6 are arranged on the bottom walls on both sides of the through slot in the length direction of the through slot. The pulley bearing shafts 6 pass through the through slot and are provided with latches 7 at the bottom, the bottom ends of the two latches 7 are provided with cross beams 8 arranged along the slope of the shallow silo inclined top 24 and extending out of the edge of the shallow silo top at the bottom end, and the portions of the two cross beams 8 above the edge of the shallow silo top are respectively connected to large rollers 10 that make circumferential motion along the edge of the shallow silo top through fixed rods. Each cross beam 8 is connected to the front and rear shafts of the large roller 10 through two fixed rods respectively, and in one or more embodiments, the large roller 10 is located directly above the shallow silo wall. The working steel wires 17 at both ends of the basket 19 are connected to the end portions of the corresponding cross beams 8, and in one or more embodiments, the basket 19 is provided with safety steel wires 18 at both ends connected to the end portions of the corresponding cross beams 8. One end of the basket 19 is provided with a basket drive motor 20 for controlling the working steel wires 17 and the safety steel wires 18. The cross beam 8 is also provided with a limiting mechanism for limiting the large roller 10 after the large roller 10 is moved into position.

[0027] The bottom of each cross beam 8 is provided with a plurality of small rollers 9 coaxial and arranged in sequence from top to bottom along the slope of the shallow silo inclined top 24, and the small rollers 9 are coaxially arranged with the corresponding cross beams 8. The large roller 10 and the small rollers 9 at the bottom of each cross beam 8 are connected through a transmission shaft 12. Each transmission shaft 12 is provided with a drive motor 11 connected to the power end.

[0028] Each cross beam 8 is provided with a reinforcing steel wire 15 passing through the top end of the upper leg 14.

[0029] Embodiment 2

[0030] Example 2 is basically the same as example 1, except that:

[0031] Referring to Figures 1 to 2 , the limiting mechanism has an upper leg 14 connected vertically to the bottom end of each cross beam 8 and connected to the shaft center of the large roller 10, and a door-shaped frame is symmetrically arranged on both sides of the upper leg 14, and a jack 13 coaxially connected to the power end is symmetrically arranged at both ends of the door-shaped frame.

[0032] Example 3

[0033] Example 3 is basically the same as example 2, except that:

[0034] Referring to Figures 3 to 6 , the guide rail support 1 includes a plurality of triangular supports 1-2 with triangular cross sections and located at the same height, which are uniformly distributed along the side wall of the silo top ring beam 23, the vertical surface of the triangular support 1-2 is fixedly connected with the side wall of the silo top ring beam 23, the horizontal surface of the triangular support 1-2 is fixedly connected with the bottom surface of the shallow silo top cornice 21, the guide rail 4 is fixedly connected with the outer side of the inclined surface of the triangular support 1-2, the guide rail 4 is formed by connecting a plurality of curved square steel pipes through guide rail joints 1-3, the guide rail joints 1-3 are connected with the outer side of the inclined surface of the triangular support 1-2, and the square steel pipes are connected with the guide rail joints 1-3 through crimping bolts 3.

[0035] The vertical surface of each triangular support 1-2 is provided with a plurality of clamping grooves 1-4 from top to bottom, all the clamping grooves 1-4 corresponding to the triangular supports 1-2 are located at the same height, and the clamping grooves 1-4 located at the same height are connected by the same steel wire rope 2, and each steel wire rope 2 is tightly matched with the silo top ring beam 23 and the corresponding clamping groove 1-4.

[0036] The horizontal surface of each triangular support 1-2 is provided with a horizontal hanging plate 1-1 connected with the bottom end thereof, and the horizontal hanging plate 1-1 is in the form of a horizontally placed U-shaped structure which is tightly attached to the wall surface of the shallow silo top cornice 21, and each horizontal hanging plate 1-1 is provided with a clamping groove 1-4 at the top end thereof, and all the clamping grooves 1-4 at the top end of the horizontal hanging plates 1-1 are connected by a steel wire rope 2 of the shallow silo flat top 22.

[0037] The main process of the installation method of the present application is as follows: firstly, a circle of guide rail support 1 is installed on the shallow silo roof cornice 21, the guide rail support 1 is composed of a transverse hanging plate 1-1, three triangular supports 1-2 in a group, a guide rail connecting joint 1-3 and a clamping groove 1-4, the interval of each group of triangular supports 1-2 is preferably 1.4 meters, the guide rail joint 1-3 is welded on the hypotenuse of the three triangular supports 1-2 in a group, and one clamping groove 1-4 is arranged on each transverse hanging plate 1-1, and three clamping grooves 1-4 are arranged on one triangular support 1-2. Then, a circle of independent steel wire rope 2 is wound on the clamping grooves 1-4 at the same height of the transverse hanging plate 1-1 and the triangular support 1-2 of the guide rail support 1, and a steel wire rope tightener (not shown in the figure) is used to tighten each circle of steel wire rope 2, and a steel wire rope buckle (not shown in the figure) is used to fix the connecting joint of the ring formed by the steel wire rope 2 connected at the end, and at the same time, the steel wire rope tightener on the ring formed by each steel wire rope 2 is in working condition without being removed, the joints of the rings formed by each steel wire rope 2 are staggered with each other, there are three clamping grooves 1-4 on one triangular support 1-2, one steel wire rope 2 is installed in each clamping groove 1-4, and four steel wire ropes 2 are wound and fixed on each triangular support 1-2 and transverse hanging plate 1-1, so that the vertical edge of the triangular support 1-2 is tightly attached to the side wall of the roof ring beam 23. Then, a press-in bolt 3 is used to fix the guide rail 4 on the guide rail joint 1-3, and the guide rail 4 is composed of segmented square steel pipes which are connected into a circular ring through multiple guide rail joints 1-3. A pair of pulley blocks 5 is arranged in the guide rail 4, and a suspension system of a hanging basket 19 is connected to the pulley bearing shaft 6 of the pulley block 5 through a bolt 7, and the suspension system of the hanging basket 19 is composed of a cross beam 8, a small roller 9, a large roller 10, a driving motor 11, a transmission shaft 12, a jack 13, an upper supporting leg 14, a reinforcing steel wire rope 15, a steel wire rope connecting disc 16, a working steel wire rope 17, a safety steel wire rope 18, the hanging basket 19 and a hanging basket driving motor 20. The cross beam 8 preferably uses a detachable and connectable square steel. The rear end of the cross beam 8 is connected to the pulley block 5, the rear half of the cross beam 8 is provided with a vertical small roller 9, the small roller 9 rolls on the inclined roof 24, the front half of the cross beam 8 is provided with a vertical large roller 10, the specific position of the large roller 10 is directly above the shallow silo wall, and the pressure generated by the large roller 10 on the roof is borne by the shallow silo wall. A driving motor 11 is installed in the middle of the cross beam 8, the driving motor 11 can drive the driving shaft connected to the large roller 10 and the small roller 9, so that the large roller 10 and the small roller 9 drive the front and rear ends of the cross beam 8 to move around the center of the shallow silo at the same angular velocity, that is, the front end of the cross beam 8, the rear end of the cross beam 8 and the center of the shallow silo are always on the same line.Two jacks 13 are installed on both sides of the large roller 10 on the cross beam 8, and an upper support leg 14 is installed directly above the large roller 10. A steel wire rope connecting disc 16 is welded at the front end of the cross beam 8. The upper ends of the working steel wire rope 17 and the safety steel wire rope 18 of the hanging basket 19 are both installed on the steel wire rope connecting disc 16 at the front end of the cross beam 8. The lower ends of the working steel wire rope 17 and the safety steel wire rope 18 of the hanging basket 19 are both installed on the hanging basket driving motor 20. The reinforcing steel wire rope 15 is connected to the front and rear ends of the cross beam 8 by passing over the top end of the upper support leg 14 and being tightened. The installation of the hanging basket 19 is completed after the above work is completed.

[0038] Embodiment 4

[0039] Referring to Figure 7 , the operation method of the shallow silo roof translatable hanging basket system has the following steps:

[0040] S1, when the hanging basket 19 is working, the jack 13 is elongated, the base of the jack 13 is moved downward until the base of the jack 13 is supported on the roof plate directly above the silo wall and the bottom of the large roller 10 is lifted off the roof plate, so as to keep the stability of the hanging system of the hanging basket 19;

[0041] S2, when the hanging basket 19 needs to be translatable, the length of the jack 13 is shortened so that the base of the jack 13 is raised upward until the bottom of the large roller 10 falls on the roof plate;

[0042] S3, the driving motor 11 in the middle of the two cross beams 8 is started, the driving motor 11 drives the two cross beams 8 to move around the center of the shallow silo at the same angular velocity, the pulley block 5 at the rear end of the cross beam 8 moves in the guide rail 4, and the working steel wire rope 17 at the front end of the cross beam 8 drives the hanging basket 19 to move transversely;

[0043] S4, when the hanging basket 19 is translatable to a suitable position, the jack 13 is elongated, the base of the jack 13 is moved downward until the base of the jack 13 is supported on the roof plate and the bottom of the large roller 10 is lifted off the roof plate, so as to keep the stability of the hanging system of the hanging basket 19;

[0044] S5, after the stability of the hanging system of the hanging basket 19, the hanging basket 19 normally works.

[0045] Innovative points:

[0046] 1. By using the transverse hanging plate 1-1 on the guide rail support 1, the technical problem of difficult fixation of the guide rail support 1 on the roof ring beam 23 is solved, and a stable fulcrum is provided for the guide rail support 1.

[0047] 2. By installing the annular guide rail 4 on the roof ring beam 23, the technical problem that the hanging basket 19 cannot be translatable during use is solved, and convenience is provided for the shallow silo hanging basket construction.

[0048] It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

[0049] The details of the application are set forth in the accompanying description below. Although specific embodiments are described, these are not intended to limit the scope of the present application, as described in the claims.

Claims

1. A shallow silo top traversable basket system comprising a shallow silo top and a basket (19) suspended by a working wire rope (17) at both ends, characterized in that: The ring beam (23) of the shallow silo top is provided with a ring of guide rails (4) in the circumferential direction, the guide rails (4) are inclined square tube structures, one side of the guide rails (4) towards the edge of the shallow silo top is provided with a through slot in the circumferential direction of the guide rails (4), the bottom wall on both sides of the through slot is respectively provided with two groups of pulley blocks (5) connected by a pulley load shaft (6) in the length direction of the through slot, the pulley load shaft (6) passes through the through slot and is provided with a latch (7) at the bottom, the bottom end of the two latches (7) is respectively provided with a cross beam (8) arranged along the slope of the inclined top (24) of the shallow silo and extending out of the edge of the shallow silo top at the bottom end, the part of the two cross beams (8) above the edge of the shallow silo top is respectively connected by a fixed rod to a large roller (10) which makes a circular motion along the edge of the shallow silo top, each cross beam (8) is connected by two fixed rods to the front and rear rotating shafts of the large roller (10), the working steel wire rope (17) at both ends of the hanging basket (19) is connected to the end of the corresponding cross beam (8), the cross beam (8) is further provided with a limiting mechanism for limiting the large roller (10) after the large roller (10) is moved into position.

2. The shallow silo top traversable basket system of claim 1, wherein: The bottom of each cross beam (8) is provided with a plurality of small rollers (9) coaxially arranged from top to bottom along the slope of the inclined top (24) of the shallow silo, the small rollers (9) are coaxially arranged with the corresponding cross beam (8).

3. The shallow silo top traversable basket system of claim 2, wherein: The large roller (10) and the small roller (9) at the bottom of each cross beam (8) are connected by a transmission shaft (12).

4. The shallow silo top traversable basket system of claim 3, wherein: A drive motor (11) is provided on each transmission shaft (12).

5. The shallow silo top traversable basket system of claim 4, wherein: The limiting mechanism has an upper leg (14) vertically connected to the bottom end of each cross beam (8) and connected to the axis of the large roller (10), the upper leg (14) is symmetrically provided with a door frame on both sides, and the door frame is symmetrically provided at both ends with a jack (13) coaxially connected to the power end.

6. The shallow silo top traversable basket system of claim 5, wherein: The guide rails (4) are connected to the ring beam (23) of the silo top by guide rail supports (1) fixed to the silo top.

7. The shallow silo top traversable basket system of claim 6, wherein: The guide rail supports (1) include a plurality of triangular supports (1-2) with triangular cross sections and located at the same height and uniformly distributed along the side wall of the ring beam (23) of the silo top, the vertical surface of the triangular support (1-2) is fixedly connected to the side wall of the ring beam (23) of the silo top, the horizontal surface of the triangular support (1-2) is fixedly connected to the bottom surface of the eaves (21) of the silo top, the inclined surface of the triangular support (1-2) is fixedly connected to the outer side of the guide rail (4), the guide rail (4) is formed by connecting a plurality of curved square steel pipes by guide rail joints (1-3), the guide rail joints (1-3) are connected to the outer side of the inclined surface of the triangular support (1-2), and the square steel pipes are connected to the guide rail joints (1-3) by crimping bolts (3).

8. The shallow silo top traversable basket system of claim 7, wherein: The vertical surface of each triangular support (1-2) is provided with a plurality of clamping grooves (1-4) from top to bottom, the clamping grooves (1-4) of all triangular supports (1-2) are located at the same height, the clamping grooves (1-4) located at the same height are connected by the same steel wire rope (2), and each steel wire rope (2) is tightly matched with the ring beam (23) of the silo top and the corresponding clamping groove (1-4).

9. The shallow silo moveable top basket system of claim 8, wherein: The horizontal end of each triangular support (1-2) is provided with a transverse hanging plate (1-1) connected to the bottom end, the transverse hanging plate (1-1) is in overall U-shaped structure, the U-shaped structure is close to the wall of shallow silo eaves (21), the top end of each transverse hanging plate (1-1) is provided with a clamping groove (1-4), the clamping grooves (1-4) at the top end of all transverse hanging plates (1-1) are connected by a steel wire rope (2) of shallow silo flat top (22); The both ends of the hanging basket (19) are respectively provided with safety steel wire ropes (18) connected to the end of the corresponding cross beam (8); The hanging basket (19) is provided with a hanging basket driving motor (20) at one end for controlling the working steel wire rope (17) and the safety steel wire rope (18); The both ends of each cross beam (8) are provided with a reinforcing steel wire rope (15) passing through the top end of the upper support leg (14); The large roller (10) is located directly above the silo wall.

10. A method of operating a shallow silo top traversable basket system according to claim 9, characterized in that: The method has the following steps: S1, when the hanging basket (19) is working, the jack (13) extends the support leg, the base of the jack (13) moves downward until the base of the jack (13) is supported on the silo top plate directly above the silo wall and the bottom of the large roller (10) is lifted off the silo top plate, and the stability of the hanging basket (19) suspension system is maintained; S2, when the hanging basket (19) needs to be transversely moved, the length of the jack (13) support leg is shortened so that the base of the jack (13) rises upward until the bottom surface of the large roller (10) falls on the silo top plate; S3, the driving motor (11) in the middle of the two cross beams (8) is started, the driving motor (11) drives the two cross beams (8) to move around the center of the shallow silo at the same angular velocity, the pulley block (5) at the rear end of the cross beam (8) moves in the guide rail (4), and the working steel wire rope (17) at the front end of the cross beam (8) drives the hanging basket (19) to move transversely; S4, when the hanging basket (19) is transversely moved to a suitable position, the jack (13) support leg is extended, the base of the jack (13) moves downward until the base of the jack (13) is supported on the silo top plate and the bottom of the large roller (10) is lifted off the silo top plate, and the stability of the hanging basket (19) suspension system is maintained; S5, after the stability of the hanging basket (19) suspension system is maintained, the hanging basket (19) normally operates.

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