A multi-functional retractable device for polar scientific research

By designing a multi-functional retracting and retracting device, and using the cooperation of rotating discs, telescopic devices and trolleys, the existing icebreakers are solved inconvenient operation in polar scientific research, and the equipment is efficient and accurate retracting and transport, and the efficiency of scientific research is improved.

CN115520776BActive Publication Date: 2025-07-22SHANGHAI HAIXUN ELECTRICAL ENG CO LTD
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Patent Information

Application Number
CN202211116699.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-09-14
Publication Date
2025-07-22
Estimated Expiration
2042-09-14

AI Technical Summary

Technical Problem

The existing icebreaker has high labor intensity and inconvenient operation in polar scientific research, long range, slow ice breaking progress, large fuel consumption, scarce resources, insufficient number and flexibility of base stations, which cannot meet the needs of polar scientific research.

Method used

A multi-functional retracting and retracting device is designed, including bottom support, columns, beams, rotating discs, telescopic devices and trolleys. The lifting and release of polar scientific research equipment is achieved through the coordination of these components. The telescopic device with a scissor structure increases rigidity, and the electric hoist increases load capacity, and the structure is compact and easy to store and transport.

Benefits of technology

It realizes efficient and accurate collection and distribution of polar scientific research equipment, reduces the physical consumption of operators, improves scientific research efficiency, has a simple structure for storage and transportation, and is adapted to the polar environment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides a multifunctional retractable device for polar scientific research, which relates to the field of polar scientific research and includes: a bottom support, on both sides of the bottom support, there is respectively provided a column, the tops of the two columns are connected by a cross beam, and on the side of the cross beam facing the bottom support, there is provided a rotating disk; two first telescopic devices are arranged at the bottom of the rotating disk, and at the ends of the two first telescopic devices far away from the rotating disk, there is provided a hanging beam; a second telescopic device is arranged at the bottom of the rotating disk and between the two first telescopic devices; a trolley is detachably arranged on the bottom support; the rotating disk, the two first telescopic devices, the second telescopic device and the trolley cooperate to realize the lifting and releasing of polar scientific research equipment; the beneficial effects are that the external structure is simple, the size is compact, and it is convenient for storage; the accuracy of retracting and releasing polar scientific research equipment is high, and the scientific research efficiency is increased.
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Description

Technical Field

[0001] The present invention relates to the field of polar scientific research, and particularly to a multifunctional retractable device for polar scientific research. Background Art

[0002] Polar scientific research is related to global change and the future of mankind. It is also a display and competition of a country's comprehensive national strength and high-tech level on the international stage, and has far-reaching and significant significance in politics, science, economy, diplomacy, military and other aspects. At present, China has established several scientific research stations in the two poles, but the lack of resources, the number and flexibility of base stations far cannot meet and cover the needs of polar scientific research.

[0003] With the development of the Antarctic and Arctic exploration undertakings, modern icebreakers have become important equipment for polar exploration. In addition to icebreaking, they also undertake tasks such as transportation, ocean exploration, the lowering and recovery of unmanned submersibles, and ice sampling. However, affected by the working environment, not only is the labor intensity high, but also the operation of personnel is extremely inconvenient; such icebreakers have a long voyage, slow icebreaking progress, and high fuel consumption. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention provides a multifunctional retractable device for polar scientific research, which is characterized by including:

[0005] A bottom support, on both sides of which are respectively provided with a column, and the tops of the two columns are connected by a cross beam. On the side of the cross beam facing the bottom support is provided a rotating disk.

[0006] Two first telescopic devices are arranged at the bottom of the rotating disk, and at the ends of the two first telescopic devices away from the rotating disk is provided a hanging beam.

[0007] A second telescopic device is arranged at the bottom of the rotating disk and between the two first telescopic devices.

[0008] A trolley is detachably arranged on the bottom support.

[0009] The rotating disk, the two first telescopic devices, the second telescopic device and the trolley cooperate to realize the lifting and release of polar scientific research equipment.

[0010] Preferably, the first telescopic device is two scissor structures, the tops of the two scissor structures are connected to the rotating disk, and the bottoms of the two scissor structures are connected to the hanging beam.

[0011] Preferably, the rotating disk includes:

[0012] A circular ring, the circular ring is coaxially arranged with the disc at the bottom of the cross beam, and the circular ring can rotate axially along the disc at the bottom of the cross beam;

[0013] A first rectangular frame, on the inner walls of both sides of the first rectangular frame, there are respectively a first sliding groove arranged diagonally, and on the lower surfaces of both sides of the first rectangular frame, there are respectively a second sliding groove arranged diagonally. Each of the first sliding grooves and each of the second sliding grooves are respectively in rolling connection with a first roller set arranged at the top of the first telescopic device;

[0014] Two guiding beams, vertically arranged at the bottom of the first rectangular frame, on the inner sides of the two guiding beams, there is respectively a third sliding groove arranged, and each of the third sliding grooves is respectively in rolling connection with a second roller set arranged at the middle connection part of the first telescopic device.

[0015] Preferably, the second contraction device is an electric hoist; on one side of the cross beam facing the bottom support, there is a first lifting lug welded. One end of the electric hoist is hung on the first lifting lug, and on the other end of the electric hoist, there is a second lifting lug, and the second lifting lug is connected to the hanging beam.

[0016] Preferably, the hanging beam includes:

[0017] A second rectangular frame, on the inner walls of both sides of the second rectangular frame, there are respectively a fourth sliding groove arranged diagonally; on the upper surfaces of both sides of the second rectangular frame, there are respectively a fifth sliding groove arranged diagonally; the fourth sliding groove and the fifth sliding groove are respectively in rolling connection with a third roller set arranged at the bottom of the first telescopic device;

[0018] Between the two sides of the second rectangular frame, there is a fixed beam, and on the fixed beam, there is a third lifting lug, and the third lifting lug is connected to the second lifting lug;

[0019] Two fastening components, the two fastening components are respectively connected to the outer walls of both sides of the second rectangular frame; on the two fastening components, there are respectively a bolt hole for fixing the polar scientific research equipment.

[0020] Preferably, the trolley includes:

[0021] A trolley main body, in the middle of the trolley main body, there is a hollow area opened;

[0022] At least one support frame, arranged on the trolley main body and on both sides of the hollow area facing the bottom support, on one side of each support frame facing the hollow area, there is respectively a baffle;

[0023] At least one support point, arranged on the trolley main body and on both sides of the hollow area perpendicular to the bottom support;

[0024] The fourth roller set is arranged at the bottom of the trolley main body.

[0025] Preferably, a fifth roller set is further arranged on both sides of the trolley main body, on the side of the support frame facing the bottom support.

[0026] Preferably, the bottom support includes two bases, and guiding chamfer angles are respectively arranged at both ends of each base corresponding to the fifth roller set.

[0027] Preferably, the two bases are respectively connected to the bottoms of the two columns, and at least one diagonal brace is arranged between each base and the corresponding column.

[0028] The above technical solution has the following advantages or beneficial effects:

[0029] 1) The external structure is simple and the size is compact, which can be stored in a relatively small container, facilitating storage.

[0030] 2) The overall structure is light in weight, facilitating transportation and hoisting.

[0031] 3) The bottom support is provided with skids and rollers, facilitating pushing on the ground and ice surface.

[0032] 4) The first telescopic device adopts a scissor structure, with a long stroke, relatively high rigidity, and is not affected by the water flow under the polar ice surface.

[0033] 5) The second telescopic device has a large load, can meet the needs of releasing and emerging polar scientific research equipment, and saves the physical strength of operators.

[0034] 6) The trolley is convenient for transporting and storing polar scientific research equipment.

[0035] 7) The accuracy of retracting and deploying polar scientific research equipment is high, increasing the scientific research efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the multifunctional retracting and deploying device in a preferred embodiment of the present invention;

[0037] Figure 2 It is a schematic diagram of the structure of the cross beam in a preferred embodiment of the present invention;

[0038] Figure 3 It is a schematic diagram of the structure of the rotating disc in a preferred embodiment of the present invention;

[0039] Figure 4 It is a schematic diagram of the structure of the first telescopic device in a preferred embodiment of the present invention;

[0040] Figure 5In a preferred embodiment of the present invention, a schematic structural diagram of a suspension beam;

[0041] Figure 6 In a preferred embodiment of the present invention, a schematic structural diagram of a trolley;

[0042] Figure 7 In a preferred embodiment of the present invention, a schematic structural diagram of a base;

[0043] Figure 8 In a preferred embodiment of the present invention, a schematic structural diagram of a base;

[0044] In the drawings: 11, base; 12, diagonal brace; 13, first through hole; 14, second through hole; 15, bottom wear-resistant plate; 16, sixth roller; 17, guiding bevel; 2, column; 3, cross beam; 31, disc; 32, first lifting lug; 4, rotating disc; 41, ring; 42, first rectangular frame; 421, first sliding groove; 422, second sliding groove; 43, guiding beam; 431, third sliding groove; 5, first telescopic device; 51, first roller group; 52, second roller group; 53, third roller group; 6, suspension beam; 61, second rectangular frame; 611, fourth sliding groove; 612, fifth sliding groove; 62, fixed beam; 621, third lifting lug; 63, fastening member; 631, bolt hole; 7, second telescopic device; 71, electric hoist; 72, second lifting lug; 8, trolley; 81, trolley body; 82, support frame; 83, baffle; 84, support point; 85, fourth roller group; 86, fifth roller group. Detailed Description of the Invention

[0045] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The present invention is not limited to this embodiment, and other embodiments may also fall within the scope of the present invention as long as they conform to the gist of the present invention.

[0046] In a preferred embodiment of the present invention, in view of the above problems existing in the prior art, a multifunctional retractable device for polar scientific research is provided, as Figures 1 to 8 shown, including:

[0047] A bottom support 1, on both sides of the bottom support 1, there is respectively provided a column 2, the tops of the two columns 2 are connected by a cross beam 3, and on one side of the cross beam 3 facing the bottom support 1, there is provided a rotating disc 4;

[0048] Two first telescopic devices 5, arranged at the bottom of the rotating disc 4, and at the ends of the two first telescopic devices 5 far from the rotating disc 4, there is provided a suspension beam 6;

[0049] A second telescopic device 7, arranged at the bottom of the rotating disc 4 and located between the two first telescopic devices 5;

[0050] The trolley 8 is detachably arranged on the bottom support 1;

[0051] The rotating disc 4, the two first telescopic devices 5, the second telescopic device 7 and the trolley 8 cooperate to realize the lifting and releasing of the polar scientific research equipment.

[0052] Specifically, in this embodiment, before polar scientific research, first store the polar scientific research equipment on the trolley 8. The polar scientific research equipment and the multifunctional retracting and deploying device for polar scientific research are stored together in a standard 20-foot container. Transport the 20-inch container to the polar region, and carry the polar scientific research equipment and the multifunctional retracting and deploying device to directly above the outlined ice hole.

[0053] Preferably, the two bases 11 are respectively connected to the bottoms of the two columns 2, and at least one diagonal brace 12 is provided between each base 11 and the corresponding column 2. The number of diagonal braces 12 on each base 1 is two, and the two diagonal braces 12 are respectively arranged on both sides of each column. It can be understood that the number of the diagonal braces is not limited to this, and the specific number can be customized according to actual needs. Each base 1 is also provided with at least one first through hole 13 and at least one second through hole 14. The first through hole 13 is used to fix the trolley 8 on the base 1 and is fixed to the multifunctional retracting and deploying device. The second through hole 14 can fix the multifunctional retracting and deploying device on the ice surface through an ice nail, that is, fix it directly above the outlined ice hole. The bottom of each base 1 is provided with a bottom wear-resistant plate 15, and at least one sixth roller 16 is further provided on the bottom wear-resistant plate 15. The sixth roller 16 is used for the multifunctional retracting and deploying device to move on the ice surface.

[0054] Subsequently, use the trolley 8 to remove the polar scientific research equipment from the multifunctional retracting and deploying device, and chisel an ice hole according to the ice hole contour line until it meets the requirements for the lowering of the unmanned submersible. After the ice hole is chiseled, move the trolley 8 and the polar scientific research equipment above the trolley 8 to the multifunctional retracting and deploying device.

[0055] In a preferred embodiment of the present invention, the rotating disc 4 includes:

[0056] A circular ring 41, the circular ring 41 is coaxially arranged with the disc 31 at the bottom of the cross beam 3, and the circular ring 41 can rotate axially along the disc 31 at the bottom of the cross beam 3;

[0057] A first rectangular frame 42, on both inner walls of the two sides of the first rectangular frame 42, a first chute 421 is respectively arranged diagonally, and on the two lower surfaces of the two sides of the first rectangular frame 42, a second chute 422 is respectively arranged diagonally. Each first chute 421 and each second chute 422 are respectively in rolling connection with a first roller set 51 arranged at the top of the first telescopic device 5;

[0058] Two guiding beams 43 are vertically arranged at the bottom of the first rectangular frame 42. A third chute 431 is respectively arranged on the inner sides of the two guiding beams 43. Each third chute 431 is in rolling connection with a second roller set 52 arranged at the middle connection part of the first telescopic device 5.

[0059] Specifically, in this embodiment, the rotating disk 4 can rotate 360 degrees along the axial direction of the disk at the bottom of the cross beam 3. When recovering the polar scientific research equipment working below the ice surface, it can be adjusted to any angle according to the position of the polar equipment.

[0060] Preferably, the first telescopic device 5 is of two scissor structures. The tops of the two scissor structures are connected to the rotating disk 4, and the bottoms of the two scissor structures are connected to the hanging beam 6. The connection between the first rectangular frame 42 and the two guiding beams 43 and the first telescopic device 5 limits the moving direction of the first telescopic device 5 and increases the stiffness of the first telescopic device 5 at the same time.

[0061] In a preferred embodiment of the present invention, the second telescopic device 7 is an electric hoist 71; a first lifting lug 32 is welded on one side of the cross beam 3 facing the bottom support 1. One end of the electric hoist 71 is hung on the first lifting lug 32, and a second lifting lug 72 is arranged at the other end of the electric hoist 71. The second lifting lug 72 is connected to the hanging beam 6.

[0062] Specifically, in this embodiment, the maximum load of the electric hoist 71 is 3 tons. It can be understood that this maximum load is not limited in this way, and an electric hoist 71 with a larger load can be selected according to requirements to be able to meet the lifting and releasing of large-load polar scientific research equipment. The telescopic stroke of the electric hoist 71 can reach up to 7 meters at most, but it is not limited by this and can be selected according to actual requirements.

[0063] In a preferred embodiment of the present invention, the hanging beam 6 includes:

[0064] A second rectangular frame 61, and a fourth chute 611 arranged diagonally is respectively arranged on the inner walls of both sides of the second rectangular frame 61; a fifth chute 612 arranged diagonally is respectively arranged on the upper surfaces of both sides of the second rectangular frame; the fourth chute 611 and the fifth chute 612 are respectively in rolling connection with a third roller set 53 arranged at the bottom of the first telescopic device 5;

[0065] A fixed beam 62 is arranged between both sides of the second rectangular frame 61. A third lifting lug 621 is arranged on the fixed beam 62. The third lifting lug 621 is connected to the second lifting lug 72;

[0066] Two fastening components 63 are respectively connected to the outer walls of both sides of the second rectangular frame 61; a bolt hole 631 for fixing the polar scientific research equipment is respectively arranged on the two fastening components 63.

[0067] Specifically, in this embodiment, the overall structure of the suspension beam is made of 316L stainless steel rectangular tubes. It can be understood that the material is not limited to this, and different materials can be selected according to requirements.

[0068] The first rectangular frame 42 and the second rectangular frame 61 are respectively arranged at the upper and lower ends of the first telescopic device 5. The position where the first chute 421 is arranged on the first rectangular frame 42 is the same as the position where the fifth chute 612 is arranged on the second rectangular frame. The position where the second chute 422 is arranged on the first rectangular frame 42 is the same as the position where the fourth chute 611 is arranged on the second rectangular frame 61. The sizes of the first chute 421 and the fourth chute 611 are equal, and the sizes of the second chute 422 and the fifth chute 612 are equal.

[0069] The third lifting lug 621 on the fixed beam 62 is connected to the second lifting lug 72 on the electric hoist 71, so that when the electric hoist 71 is started during the recovery of the polar scientific research equipment, the first telescopic device 5, the suspension beam 6 and the polar scientific research equipment can be driven to move longitudinally through the second lifting lug 72.

[0070] The lifting lug on the polar scientific research equipment passes through the bolt hole 631 on the fastening member 63, and the lifting lug on the polar scientific research equipment is fixed in the bolt hole 631 by a pin shaft. After the polar scientific research equipment is released to reach the preset position underwater, the pin shaft is manually pulled out to separate the lifting lug on the polar scientific research equipment from the bolt hole 631.

[0071] In a preferred embodiment of the present invention, the trolley 8 includes:

[0072] A trolley body 81, with a hollow area opened in the middle of the trolley body 81;

[0073] At least one support frame 82, arranged on the trolley body 81 and on both sides of the hollow area facing the bottom support 1, and a baffle 83 is respectively arranged on one side of each support frame 82 facing the hollow area;

[0074] At least one support point 84, arranged on the trolley body 81 and on both sides of the hollow area perpendicular to the bottom support 1;

[0075] A fourth roller set 85, arranged at the bottom of the trolley body 81.

[0076] Specifically, in this embodiment, there are 4 supporting points 84, but this is not a limitation. The specific number can be customized according to actual needs. The supporting points 84 are used to support polar scientific research equipment. The supporting baffle 83 is used to fix the polar scientific research equipment placed on the trolley 8 to prevent the polar scientific research equipment from moving and tipping over. The supporting frame 82 is used to support the baffle 83 to ensure the position of the polar scientific research equipment during the transportation of the multifunctional device or the transfer of the polar scientific research equipment. The number of the supporting frame 82 and the supporting baffle 83 is 4. It can be understood that this is not a limitation, and the specific number can be customized according to actual needs. Within a certain space, the more the number, the better the effect of preventing the polar scientific research equipment from moving and tipping over.

[0077] The fourth roller group 85 at the bottom of the trolley body 81 is preferably four rollers, but this is not a limitation. The specific number can be customized according to actual needs. The fourth roller group 85 enables the trolley 8 to be easily pushed on the cement floor.

[0078] Preferably, a fifth roller group 86 is further provided on both sides of the trolley body 81, on the side of the supporting frame 82 facing the bottom support 1. The bottom support 1 includes two bases 11, and a guiding bevel 17 is respectively provided at both ends of each base 11 corresponding to the fifth roller group 86.

[0079] More specifically, in this embodiment, taking an unmanned submersible as an example, release the unmanned submersible to a predetermined position:

[0080] S1. Before the unmanned submersible is launched, first check whether the electric hoist 7 is powered on normally. After confirming the power-on, then check the two fastening components 63 on the hanging beam 6. After the unmanned submersible is locked on the two fastening components 63, start the electric hoist 71. The second lifting lug 72 on the electric hoist 71 drives the hanging beam 6 to move longitudinally upward, and the first telescopic device 5 contracts, so that the unmanned submersible leaves the trolley 8, and then the trolley 8 is slid out from the base support 1 until the trolley 8 completely exits the multifunctional retracting and deploying device, making way for the descent channel of the unmanned submersible.

[0081] S2. Disconnect the second lifting lug 72 on the electric hoist 71 from the hanging beam 6. The hanging beam 6 moves longitudinally downward due to gravity, driving the first telescopic device 5 to extend. After the first telescopic device 5 extends to the maximum tension, pull out the pin on the bolt hole 631, so that the lifting lug on the unmanned submersible is disengaged from the bolt hole 631, and then the unmanned submersible can work under the ice layer.

[0082] S3. Adjust the angle of the rotating disk 4 so that the hanging beam 6 is parallel to the cross beam 3. The first telescopic device 5 moves longitudinally upward under the action of its own elastic force, driving the hanging beam 6 to move until it reaches the normal position of the first telescopic device 5.

[0083] More specifically, in this embodiment, taking an unmanned submersible as an example, the method for recovering the unmanned submersible is as follows:

[0084] S1. A positioning system is provided inside the unmanned submersible. By activating the positioning system, the unmanned submersible can return to the ice cave entrance.

[0085] S2. Activate the electric hoist 71, so that the second lifting lug 72 on the electric hoist 71 drives the suspension beam 6 to move vertically downward, and at the same time the first telescopic device 5 extends until the suspension beam 6 is lowered to the position of the lifting lug of the unmanned submersible.

[0086] S3. After the suspension beam 6 is connected and locked with the lifting lug of the unmanned submersible, activate the electric hoist 71, so that the second lifting lug 72 on the electric hoist 71 drives the suspension beam 6 to move vertically upward until the second lifting lug rises to the limit position.

[0087] S4. Slide the trolley 8 to the bottom bracket 1 so that the trolley 8 is located below the unmanned submersible, and the bottom of the unmanned submersible is aligned with the position of the support point 84. At this time, the trolley can be fixed to the first through hole 13 of the base 11 through a pin shaft.

[0088] S5. Activate the electric hoist 71. The second lifting lug 72 on the electric hoist 71 drives the suspension beam 6 to move vertically downward until the unmanned submersible can be placed on the trolley 8. Pull out the pin shaft from the bolt hole 631, and then cut off the power supply of the electric hoist 71.

[0089] After cleaning the unmanned submersible and the multifunctional hoisting and lowering device, the unmanned submersible and the multifunctional hoisting and lowering device can be put back into the container and tied up for storage. During the recovery operation process, auxiliary tools such as wooden boards and ropes are needed to ensure the safety during the release and recovery process of the unmanned submersible.

[0090] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the content of this specification and the drawings should be included in the protection scope of the present invention.

Claims

1. A multi-functional retractable device for polar scientific research, characterized in that, Comprising: A bottom support, on both sides of the bottom support, there is respectively provided a column, the tops of the two columns are connected by a cross beam, and on the side of the cross beam facing the bottom support, there is provided a rotating disc; Two first telescopic devices, arranged at the bottom of the rotating disc, and at the ends of the two first telescopic devices away from the rotating disc, there is provided a hanging beam; A second telescopic device, arranged at the bottom of the rotating disc and located between the two first telescopic devices; A trolley, detachably arranged on the bottom support; The rotating disc, the two first telescopic devices, the second telescopic device and the trolley cooperate to achieve the lifting and releasing of the polar scientific research equipment; The first telescopic device is two scissor structures, the tops of the two scissor structures are connected to the rotating disc, and the bottoms of the two scissor structures are connected to the hanging beam; The second telescopic device is an electric hoist; at the other end of the electric hoist, there is provided a second lifting lug; The hanging beam includes: A second rectangular frame, on the inner walls of both sides of the second rectangular frame, there are respectively provided a fourth chute arranged diagonally; on the upper surfaces of both sides of the second rectangular frame, there are respectively provided a fifth chute arranged diagonally; the fourth chute and the fifth chute are respectively in rolling connection with a third roller set arranged at the bottom of the first telescopic device; Between the two sides of the second rectangular frame, there is provided a fixed beam, on the fixed beam, there is provided a third lifting lug, and the third lifting lug is connected to the second lifting lug; Two fastening components, the two fastening components are respectively connected to the outer walls of both sides of the second rectangular frame; on the two fastening components, there are respectively provided a bolt hole for fixing the polar scientific research equipment.

2. The multifunctional retracting and extending device according to claim 1, wherein The rotating disc includes: A ring, the ring is coaxially arranged with the disc at the bottom of the cross beam, and the ring can rotate axially along the disc at the bottom of the cross beam; A first rectangular frame, on the inner walls of both sides of the first rectangular frame, there are respectively provided a first chute arranged diagonally, on the lower surfaces of both sides of the first rectangular frame, there are respectively provided a second chute arranged diagonally, and each of the first chutes and each of the second chutes are respectively in rolling connection with a first roller set arranged at the top of the first telescopic device; Two guiding beams, vertically arranged at the bottom of the first rectangular frame, on the inner sides of the two guiding beams, there are respectively provided a third chute, and each of the third chutes is respectively in rolling connection with a second roller set arranged at the middle connection part of the first telescopic device.

3. The multifunctional retracting device according to claim 1, wherein, On the side of the cross beam facing the bottom support, there is welded a first lifting lug, one end of the electric hoist is hung on the first lifting lug, and the second lifting lug is connected to the hanging beam.

4. The multifunctional retractable device according to claim 1, characterized in that, The trolley includes: A trolley body, in the middle of the trolley body, there is provided a hollow area; At least one support frame, arranged on the trolley body and located on both sides of the hollow area facing the bottom support, and on the side of each support frame facing the hollow area, there is respectively provided a baffle; At least one support point, arranged on the trolley body and located on both sides of the hollow area perpendicular to the bottom support; A fourth roller set, arranged at the bottom of the trolley body.

5. The multifunctional retractable device according to claim 4, characterized in that, On both sides of the trolley body, a fifth roller set is further provided, which is located on the side of the support frame facing the bottom support.

6. The multifunctional retracting and deploying device according to claim 5, wherein, The bottom support includes two bases, and at both ends of each base, a guiding bevel is respectively provided corresponding to the fifth roller set.

7. The multifunctional retracting device according to claim 6, characterized in that, The two bases are respectively connected to the bottoms of the two columns, and at least one diagonal brace is provided between each base and the corresponding column.

Citation Information

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