A hoisting device for large precision devices

Abstract

The present invention provides a lifting device for large precision devices, and relates to the field of lifting devices. The lifting device for large precision devices includes a main body, and the main body is provided with a fixing part and a limiting part. The fixing part and the limiting part are detachably connected to each other to form a storage space of the main body; the part to be lifted is located in the storage space, and the part to be lifted is connected to the fixing part; the main body is also formed with a lifting part. The part to be lifted, i.e., the large precision device, can be fixed to the main body through the fixing part, and the limiting part is connected to the fixing part to achieve protection and limitation of the part to be lifted, and then the part to be lifted is safely and smoothly transported through the lifting part, effectively avoiding the tilting, collision, sliding and falling of the part to be lifted during the transportation process.

Description

Technical Field

[0001] The present application relates to the field of hoisting equipment, and in particular to a hoisting equipment for large precision devices. Background Art

[0002] At present, forklifts are usually used to transport large precision devices, but such devices are large in size, heavy in weight and have many precision parts. For example, a large multi-wire cutting device weighs more than 15 tons and is equipped with multiple precision modules such as a cutting system, a wire retracting system, and a cutting fluid cooling system. Therefore, the existing method of using a forklift to transport such devices is difficult to transport and has a low safety factor, which can easily cause the precision device to tilt, collide, slide or even fall, resulting in scratches or damage to the components and outer surface of the device, affecting subsequent installation and use and causing great economic losses. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a lifting device for large precision devices to solve the problem that the existing method of using a forklift to transport such devices is difficult to transport and has a low safety factor, which can easily cause the precision devices to tilt, collide, slide or even fall, thereby causing scratches or damage to the components and outer surface of the device, affecting subsequent installation and use and causing huge economic losses.

[0004] According to the above-mentioned purpose, the present invention provides a lifting device for large-scale precision equipment, wherein the lifting device for large-scale precision equipment includes a main body, the main body is provided with a fixing part and a limiting part, the fixing part and the limiting part are detachably connected to each other to form a accommodating space of the main body; the part to be lifted is located in the accommodating space, and the part to be lifted is connected to the fixing part; the main body is also formed with a lifting part.

[0005] Preferably, the fixing portion is located at a lower position of the part to be hoisted; the fixing portion includes a plurality of fixing members connected end to end, each of the fixing members is formed with a first connecting portion on the side facing the part to be hoisted; the fixing members are connected to the part to be hoisted via the first connecting portion, and each of the fixing members is in contact with the part to be hoisted.

[0006] Preferably, a second connection portion is formed on the side of the fixing member facing away from the member to be hoisted, and the second connection portion is formed as a plurality of connection holes; and the fixing portion is detachably connected to the limiting portion via the second connection portion.

[0007] Preferably, the limiting portion comprises a plurality of first sub-limiting members, and a third connecting portion corresponding to the second connecting portion is formed on a side of each of the first sub-limiting members facing the fixing portion.

[0008] Preferably, a plurality of the first sub-limiting members are arranged around the outer circumference of the to-be-hoisted member.

[0009] Preferably, the first sub-limiting member is parallel to the side of the to-be-hoisted member it faces, and the other end of each first sub-limiting member connected to the fixing portion is not lower than the height of the to-be-hoisted member.

[0010] Preferably, the limiting portion further comprises a plurality of second sub-limiting members connected end to end, wherein the second sub-limiting members are connected to the end of the first sub-limiting member away from the fixing portion; and reinforcing ribs are arranged in the space enclosed by the plurality of second sub-limiting members.

[0011] Preferably, a fourth connecting portion is provided at the end of the first sub-limiting member away from the fixing portion, and the fourth connecting portion includes a first clamping plate connected to the side of the first sub-limiting member facing the part to be hoisted and a second clamping plate connected to the side of the first sub-limiting member facing away from the part to be hoisted; the first clamping plate, the second clamping plate and the first sub-limiting member together form a U-shaped opening portion, and the second sub-limiting member is arranged in the opening portion.

[0012] Preferably, the distance between the relative inner walls of the opening portion is equal to the width of the second sub-limiting member; the relative inner walls of the opening portion are formed with corresponding limiting holes, and the limiting holes are connected to the third sub-limiting member; when the second sub-limiting member abuts against the bottom of the opening portion, the third sub-limiting member abuts against the side of the second sub-limiting member away from the fixed portion.

[0013] Preferably, the main body is also connected to a lifting rope, which is sequentially wound around the fixing portion and the side of the limiting portion facing away from the part to be hoisted, and both ends of the lifting rope are fixed to the main body; the lifting portion is formed at the rope body of the lifting rope located at the top of the part to be hoisted.

[0014] According to the hoisting device for large precision devices of the present invention, the part to be hoisted, i.e., the large precision device, can be fixed to the main body through the fixing part, and the limiting part is connected to the fixing part to achieve protection and limiting of the part to be hoisted, and then the part to be hoisted is safely and smoothly transported through the hoisting part, effectively avoiding the tilting, collision, sliding and falling of the part to be hoisted during the transportation process. In addition, the detachable connection between the limiting part and the fixing part can expand the application scope of the hoisting device and increase the flexibility of the hoisting device when used.

[0015] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a schematic diagram of a hoisting device for a large precision device according to an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of a subject according to an embodiment of the present invention;

[0019] Figure 3 is a connection schematic diagram of a limiting part according to an embodiment of the present invention;

[0020] Figure 4 2 is a partial schematic diagram of a limiting portion according to an embodiment of the present invention.

[0021] Icons: 1-main body; 10-fixing part; 11-fixing piece; 12-first connecting part; 13-second connecting part; 20-limiting part; 21-first sub-limiting piece; 22-third connecting part; 24-fourth connecting part; 240-first clamping plate; 241-second clamping plate; 242-opening part; 243-limiting hole; 244-third sub-limiting piece; 25-second sub-limiting piece; 30-lifting rope; 4-parts to be lifted. DETAILED DESCRIPTION

[0022] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0023] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0024] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0025] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0026] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0027] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0028] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0029] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0030] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0031] like Figure 1 As shown, the lifting device for large precision devices of this embodiment includes a main body 1, which is formed with a fixing part 10, a limiting part 20 and a lifting part. Hereinafter, the specific structure of the above-mentioned parts of the lifting device for large precision devices according to the present invention will be described in detail.

[0032] In this embodiment, if Figure 1 to Figure 2 As shown, the fixing portion 10 and the limiting portion 20 are connected to each other to form a rectangular main body 1, and the connection between the two also forms a rectangular storage space in the main body 1, so that the hoisting part 4 can be placed in the storage space. However, the shape of the main body 1 and the storage space is not limited to this, and there are no specific requirements for the size and other characteristics of the two. It should be determined according to the actual situation, such as the shape and size of the hoisting part 4, to ensure that the storage space and the main body 1 can be in the most convenient state for hoisting and transporting the hoisting part 4, so as to avoid the situation that may occur during the hoisting and transportation process, such as tilting and falling of the hoisting part, thereby ensuring the appearance of the hoisting part 4 and the integrity of each precision part. In addition, the fixing portion 10 and the limiting portion 20 are detachably connected, so that the main body 1 can be applied to precision devices of different sizes and shapes, thereby expanding the scope of application of the hoisting device and improving the flexibility of the hoisting device when used.

[0033] like Figure 1 to Figure 2As shown, in this embodiment, by connecting the fixing part 10 with the part to be hoisted 4, the part to be hoisted 4 can be fixed in the above-mentioned accommodation space. The fixing part 10 is arranged around the side of the part to be hoisted 4 and fits the bottom edge of the side of the part to be hoisted 4, so that the stability of the connection between the fixing part 10 and the part to be hoisted 4 can be increased; and while facilitating the connection of the limiting part 20 described below, the integrity of the appearance of the part to be hoisted 4 can be maintained to the greatest extent to avoid interference with the precision parts of the part to be hoisted 4. However, the position of the fixing part 10 is not limited to this, as long as it is located at the lower side of the part to be hoisted 4, so as to facilitate the above-mentioned technical effects.

[0034] Specifically, the fixing part 10 includes a plurality of fixing members 11 connected end to end, and each fixing member 11 is formed into a rectangular plate so as to connect the part to be hoisted 4 and the first sub-limiting member 21 described below. In addition, the fixing member 11 is formed with a first connecting portion 12 on the side facing the part to be hoisted 4. In this embodiment, the first connecting portion 12 includes a plurality of first connecting holes corresponding to the mounting holes on the mounting seat of the part to be hoisted 4, and the form of the first connecting holes is the same as the mounting holes, so as to facilitate fixing the belt hoisting part on the fixing plate via the first connecting holes and the mounting holes. The way of setting the first connecting portion 12 according to the mounting seat of the part to be hoisted 4 in this embodiment can avoid unnecessary damage to the part to be hoisted 4 and save preparation time before hoisting. In addition, since the weight of the part to be hoisted 4 is too large, each fixing member 11 is in contact with the surface of the part to be hoisted 4 to avoid the breakage of the connecting members such as bolts and increase the connection strength between the fixing member 11 and the part to be hoisted 4.

[0035] It should be noted that there is no specific requirement for the number of fixing members 11 and the length of each fixing member 11. Figure 1 to Figure 2 As shown, the number of fixing members 11 corresponds to the number of the side portions of the part 4 to be hoisted, and the length of the fixing member 11 corresponds to the length of the side portion of the part 4 to be hoisted to which it is connected; alternatively, multiple fixing members 11 may be provided on each side of the part 4 to be hoisted, but two adjacent fixing members 11 need to be connected to each other to increase the stability of the main body 1. It should be further explained that there is no specific limitation on the connection method between two adjacent fixing members 11, which may be a threaded connection or a pin connection, as long as the firmness of the connection can be ensured, but in order to enable the main body 1 to be applicable to different precision devices, the connection between the fixing members 11 should be provided as a detachable connection, so as to facilitate the flexible use of the main body 1.

[0036] In addition, the side of the fixing member 11 facing away from the part to be hoisted 4 is formed with a second connection portion 13 for connecting the limiting portion 20. In this embodiment, the second connection portion 13 includes a plurality of second connection holes, so that the fixing portion 10 and the limiting portion 20 can be detachably connected, so that precision devices of different heights can be protected by the limiting portion 20 during hoisting. There is no specific restriction on the location and number of the second connection holes. For example, the second connection hole can be coaxial with the first connection hole. In this case, the first sub-limiting member 21, the fixing member 11 and the part to be hoisted 4 can be fixed by the same connection member, and there is no need to open too many holes on the fixing member 11, thereby increasing the stability of the structure of the fixing member 11 itself; for another example, the location of the second connection hole can be alternately arranged with the second connection hole, that is, as long as the first sub-limiting member 21 connected thereto can play a role of limiting and protecting the part to be hoisted 4.

[0037] Correspondingly, in this embodiment, the limiting part 20 includes a plurality of first sub-limiting members 21, each of which is formed as a rectangular plate, and a third connecting portion 22 corresponding to the second connecting portion 13 is formed on the side facing the hanging member 4. Figure 1 to Figure 2 As shown, a plurality of the first sub-limiting members 21 are arranged around the periphery of the part to be hoisted 4, so as to limit and protect the part to be hoisted 4, thereby increasing the safety of the part to be hoisted 4 during hoisting. It should be noted that there is no specific restriction on the number and position of the first sub-limiting members 21 (i.e., the number and position of the second connection holes mentioned above), and it should be determined according to the actual situation, such as the distribution of parts on the side of the part to be hoisted 4 or the size of the side of the part to be hoisted 4, as long as it is ensured that the first sub-limiting member 21 will not interfere with the part to be hoisted 4 to avoid affecting the use of various precision parts of the part to be hoisted 4; and the hoisting safety of the part to be hoisted 4 can be ensured. In addition, in the present embodiment, the first sub-limiting member 21 is connected to the side of the fixing member 11 facing away from the part to be hoisted 4, which increases the space available for the connection of the part to be hoisted 4, i.e., the size of the above-mentioned accommodation space.

[0038] In addition, in this embodiment, Figures 1 to 4 As shown, the first sub-limiting member 21 is parallel to the side of the to-be-suspended member 4 it faces, so as to flexibly adapt to the needs of suspending different precision devices. Based on this, the shape of the above-mentioned fixing member 11 is not limited to a rectangular plate, for example, it can be set to a wedge shape. In addition, the other end of each first sub-limiting member 21 connected to the fixing portion 10 is not lower than the height of the to-be-suspended member 4, so as to facilitate the connection of the second sub-limiting member 25 described below, thereby achieving the limitation and protection of the top of the to-be-suspended member 4.

[0039] Specifically, in this embodiment, by providing the fourth connection portion 24 at one end of the first sub-limiting member 21 away from the fixing portion 10, the connection between the second sub-limiting member 25 and the first sub-limiting member 21 described below can be achieved. Figure 3 to Figure 4 As shown, the fourth connecting part 24 includes a first clamping plate 240 connected to the side of the first sub-limiting member 21 facing the hanging member 4 and a second clamping plate 241 connected to the side of the first sub-limiting member 21 facing away from the hanging member 4. The first clamping plate 240 and the second clamping plate 241 as well as the first sub-limiting member 21 connected by the two together form a U-shaped opening portion 242, so that the opening portion 242 can support the second sub-limiting member 25. In order to ensure the stable connection between the second sub-limiting member 25 and the opening portion 242, the distance between the relative inner walls of the opening portion 242, that is, the distance between the first clamping plate 240 and the second clamping plate 241, should be equal to the width of the second sub-limiting member 25, so as to facilitate the limiting of the relative side portions of the second sub-limiting member 25, thereby increasing the stability of the connection of the second sub-limiting member 25; in addition, corresponding limiting holes 243 are formed on the relative inner walls of the opening portion 242, and the limiting holes 243 are correspondingly connected to the third sub-limiting member 244, and the position of the limiting holes 243 is such that when the second sub-limiting member 25 abuts against the bottom of the opening portion 242, the third sub-limiting member 244 can abut against the side of the second sub-limiting member 25 away from the fixing portion 10, thereby further increasing the stability of the connection of the second sub-limiting member 25. It should be noted that there is no specific limitation on the depth and extension direction of the opening 242 , as long as the second sub-limiting member 25 can be stably supported and the disassembly of the second sub-limiting member 25 is facilitated.

[0040] In this embodiment, if Figures 1 to 4 As shown, the limiting part 20 includes a plurality of second sub-limiting members 25 connected end to end, and the polygon formed by connecting the plurality of second sub-limiting members 25 should be similar to the shape of the top of the part to be hoisted 4, that is, the top of each side of the part to be hoisted 4 is provided with a second sub-limiting member 25 parallel to the top edge of the side, and since each side of the part to be hoisted 4 is provided with a first sub-limiting member 21, each second sub-limiting member 25 can be stably supported. In addition, a reinforcing rib is also provided in the space surrounded by the plurality of second sub-limiting members 25 to increase the stability of the second sub-connector, and the reinforcing rib can further protect the part to be hoisted 4.

[0041] In addition, in this embodiment, the main body 1 is also connected to a lifting rope 30, which is sequentially wound around the fixing portion 10 and the side of the limiting portion 20 facing away from the part to be hoisted 4, and both ends of the lifting rope 30 are fixed to the main body 1. In addition, a lifting portion is formed at the rope body of the lifting rope 30 located at the top of the part to be hoisted 4, so that the main body 1 can be lifted by a hook or the like. By arranging the lifting rope 30 on the outside of the main body 1, it is possible to avoid contact between the lifting rope 30 and the part to be hoisted 4, thereby greatly reducing the possibility of, for example, abrasion of the surface of the part to be hoisted 4 or damage to the precision parts of the part to be hoisted 4.

[0042] In addition, it should be noted that, although not shown in the figure, the hoisting device is also provided with a sensor assembly. Specifically, a plurality of tension sensors are provided at the rope body of the hoisting rope 30 located at the top of the to-be-hoisted part 4, so as to detect the tension applied to the hoisting rope 30. Each tension sensor is provided on a different section of the rope body between the hoisting portion of the hoisting rope 30 and the top of the to-be-hoisted part 4 (for example, Figure 1 As shown, four tension sensors corresponding to the four rope sections can be set on the lifting rope 30 at the top of the part to be lifted 4, and each tension sensor is communicatively connected to the control end, so that when the part to be lifted 4 is lifted, the magnitude of the tension applied to each rope section can be correspondingly known through multiple tension sensors. Further, if the tension applied to a certain rope section is too large or too small, it means that the lifting center of the lifting rope 30, i.e., the above-mentioned lifting part, and the center deviation of the part to be lifted 4 are too large. At this time, the relevant operator can immediately correct the lifting equipment to avoid collision or damage to the part to be lifted 4 caused by this problem.

[0043] In addition, although not shown in the figure, a plurality of displacement sensors are also arranged on the side of the limiter 20 facing the part to be hoisted 4, and the displacement sensors can detect the relative displacement between the part to be hoisted 4 and the limiter 20. The plurality of displacement sensors are respectively located at different positions of the limiter 20 to expand the detection range, and when a displacement sensor detects the relative displacement between the part to be hoisted 4 and the limiter 20, it can generate an alarm such as a flashing light, so that the relevant technicians can check the parts of the part to be hoisted 4 within the detection range of the displacement sensor, thereby further ensuring the stability of the part to be hoisted 4 during hoisting. In addition, the hoisting equipment can also be used to hoist other devices such as fragile devices.

[0044] According to the hoisting equipment for large precision devices as described above, the fixing part 10 can fix the part 4 to be hoisted, and then the limiting part 20 is connected to the fixing part 10 to limit and protect the part 4 to be hoisted, so as to avoid the part 4 to be hoisted from tilting, colliding, sliding or even falling during the hoisting process, thereby avoiding scratches or damage to the parts and outer surface of the precision device, which affects the subsequent installation and use. In addition, the detachable multiple fixing parts 11, the first sub-limiting part 21 and the second sub-limiting part 25 expand the scope of application of the hoisting equipment and enhance the flexibility during use.

[0045] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be described in the protection scope of the claims.

Claims

1. A hoisting device for large precision devices, characterized in that: The hoisting equipment for large precision devices comprises a main body, the main body is provided with a fixing part and a limiting part, the fixing part and the limiting part are detachably connected to each other to form a receiving space of the main body; The part to be hoisted is located in the accommodation space, and the part to be hoisted is connected to the fixing part; the main body is also formed with a hoisting part; The limiting part includes a plurality of first sub-limiting members, and the limiting part also includes a plurality of second sub-limiting members connected in sequence end to end; the second sub-limiting member is connected to the end of the first sub-limiting member away from the fixing part; a fourth connecting part is provided at one end of the first sub-limiting member away from the fixing part, and the fourth connecting part includes a first clamping plate connected to the side of the first sub-limiting member facing the part to be hoisted and a second clamping plate connected to the side of the first sub-limiting member facing away from the part to be hoisted; the first clamping plate, the second clamping plate and the first sub-limiting member together form a U-shaped opening, and the second sub-limiting member is arranged in the opening; the distance between the relative inner side walls of the opening is equal to the width of the second sub-limiting member; the relative inner side walls of the opening are formed with corresponding limiting holes, and the limiting holes are connected to the third sub-limiting member; when the second sub-limiting member abuts against the bottom of the opening, the third sub-limiting member abuts against the side of the second sub-limiting member away from the fixing part; The fixing part is located at a lower position of the part to be hoisted; the fixing part includes a plurality of fixing parts connected end to end, each of the fixing parts is formed with a first connecting part on the side facing the part to be hoisted; the fixing part is connected to the part to be hoisted via the first connecting part, and each of the fixing parts is in contact with the part to be hoisted; A second connection portion is formed on the side of the fixing member facing away from the member to be hoisted, and the second connection portion is formed into a plurality of connection holes; the fixing portion is detachably connected to the limiting portion through the second connection portion.

2. The hoisting equipment for large precision devices according to claim 1, characterized in that: A third connection portion corresponding to the second connection portion is formed on a side portion of each of the first sub-limiting members facing the fixing portion.

3. The hoisting equipment for large precision devices according to claim 2, characterized in that: A plurality of the first sub-limiting members are arranged around the outer circumference of the to-be-hoisted member.

4. The hoisting equipment for large precision devices according to claim 2, characterized in that: The first sub-limiting member is parallel to the side of the to-be-hoisted member it faces.

5. The hoisting equipment for large precision devices according to claim 4, characterized in that: A reinforcing rib is arranged in the space surrounded by the plurality of the second sub-limiting members.

6. The hoisting equipment for large precision devices according to claim 1, characterized in that: The main body is also connected to a lifting rope, which is sequentially wound around the fixing portion and the side of the limiting portion facing away from the part to be hoisted, and both ends of the lifting rope are fixed to the main body; the lifting portion is formed at the rope body of the lifting rope located at the top of the part to be hoisted.

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