Hoisting assembly, spreader device and electrophoresis production line

CN224647123UActive Publication Date: 2026-08-18ZOOMLION EARTHMOVING MASCH CO LTD +1
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Patent Information

Application Number
CN202521820759.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-26
Publication Date
2026-08-18
Estimated Expiration
2035-08-26

AI Technical Summary

Technical Problem

[0004]针对上述的缺陷或不足,本实用新型提供了一种吊装组件、吊具装置及电泳生产线,旨在解决现有的吊具装置无法将吊装孔与电泳液隔绝的技术问题

Benefits of technology

当使用上述的吊装组件时,由于包括吊挂件、工件吊装模组和密封模组,工件吊装模组中的轴装座的一端与吊挂件连接,以及另一端设有安装轴段,通过吊挂件可实现与吊装驱动机构连接,安装轴段穿设于吊装工件的吊装孔,限位端盖能够拆卸地设于安装轴段上并用于对吊装工件进行轴向限位,从而可实现吊装工件在安装轴段上的稳定吊装,同时,工件吊装模组在吊装孔的两端分设有第一密封槽和第二密封槽,密封模组中的第一密封圈和第二密封圈分别一一对应地置于第一密封槽和第二密封槽内,以使得第一密封圈和第二密封圈分别在吊装孔的两端对吊装孔进行密封,从而在进行电泳涂装作业时,可将吊装孔与电泳液进行隔绝,无需在电泳涂装完成后对吊装孔内的电泳漆进行处理,达到了提升生产效率的目的。

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Abstract

This utility model discloses a hoisting assembly, a hoisting device, and an electrophoresis production line. The hoisting assembly includes a hoisting component, a workpiece hoisting module, and a sealing module. The workpiece hoisting module includes a shaft mounting base and a limiting end cap. One end of the shaft mounting base is connected to the hoisting component, and the other end is provided with an installation shaft section. The installation shaft section can pass through the hoisting hole of the hoisted workpiece. The limiting end cap is detachably mounted on the installation shaft section and is used to axially limit the hoisted workpiece. The workpiece hoisting module has a first sealing groove and a second sealing groove at both ends of the hoisting hole. The sealing module includes a first sealing ring and a second sealing ring, which are placed in the first sealing groove and the second sealing groove respectively. Both the first sealing ring and the second sealing ring can seal the end of the hoisting hole, thereby isolating the hoisting hole from the electrophoretic liquid during electrophoretic coating operations. This eliminates the need to treat the electrophoretic paint in the hoisting hole after electrophoretic coating is completed, thus improving production efficiency.
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Description

Technical Field

[0001] This utility model belongs to the field of electrophoretic coating technology, and in particular relates to a hoisting component, hoisting device and electrophoretic production line. Background Technology

[0002] Electrophoretic coating is a coating method that uses an external electric field to cause pigments and resin particles suspended in an electrophoretic solution to migrate directionally and deposit on the surface of a substrate, which is one of the electrodes. It is the most practically significant construction process for water-based coatings. With its characteristics of water solubility, non-toxicity, and ease of automation control, it has rapidly gained widespread application in industries such as automotive, building materials, hardware, and home appliances.

[0003] Currently, electrophoresis production lines generally use lifting devices to lift workpieces into the electrophoresis pool, and the lifting holes on the workpieces borrow from the process holes on the workpieces themselves. Existing lifting devices cannot isolate the lifting holes from the electrophoresis liquid, which means that the electrophoretic paint in the lifting holes of the coated workpieces needs to be treated to ensure the assembly accuracy of the process holes, which seriously affects production efficiency. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies, this utility model provides a lifting component, a lifting device, and an electrophoresis production line, aiming to solve the technical problem that existing lifting devices cannot isolate the lifting hole from the electrophoresis liquid.

[0005] To achieve the above objectives, the first aspect of this utility model provides a hoisting assembly, wherein the hoisting assembly includes a hanging component, a workpiece hoisting module, and a sealing module; the workpiece hoisting module includes a shaft mounting seat and a limiting end cap, one end of the shaft mounting seat is connected to the hanging component, and the other end is provided with a mounting shaft section, the mounting shaft section can pass through the hoisting hole of the hoisted workpiece, the limiting end cap is detachably provided on the mounting shaft section and is used to axially limit the hoisted workpiece, the workpiece hoisting module is provided with a first sealing groove and a second sealing groove at both ends of the hoisting hole; the sealing module includes a first sealing ring and a second sealing ring placed in the first sealing groove and the second sealing groove respectively, and both the first sealing ring and the second sealing ring can seal the end of the hoisting hole.

[0006] In one embodiment of the present invention, the first sealing groove is provided on the side of the limiting end cap facing the hoisted workpiece, and the first sealing groove is located on the outside of the hoisting hole, so that the first sealing ring is sealed and fitted with the periphery of the hoisting hole.

[0007] In one embodiment of the present invention, the second sealing groove is located at the end of the mounting shaft section away from the limiting end cover, and the second sealing ring is sealed and fitted to the inner wall of the lifting hole.

[0008] In one embodiment of this utility model, the shaft mounting base is provided with an axial limiting surface at the end of the mounting shaft section away from the limiting end cover. The axial limiting surface and the limiting end cover respectively limit the axial position of the hoisted workpiece from opposite sides.

[0009] In one embodiment of the present invention, the shaft mounting base includes a bushing body and a lifting shaft. The lifting shaft includes a connecting shaft section and an installation shaft section arranged sequentially along the length direction. The connecting shaft section passes through the bushing body and is detachably connected to the bushing body. The installation shaft section extends out of the bushing body. The end face of the bushing body and the installation shaft section on the same side is set as an axial limiting surface.

[0010] In one embodiment of this utility model, the number of hoisting shafts is at least two, the diameter of the connecting shaft section of the at least two hoisting shafts is set to be the same, and the diameter of the mounting shaft section is set to be different.

[0011] In one embodiment of this utility model, the hanging component is configured to be rotatably mounted on the shaft mounting base.

[0012] In one embodiment of the present invention, the hanging component is provided with a mounting hole, and the lifting assembly further includes a support forming a support surface, with one end of the shaft mounting seat passing through the mounting hole and connected to the support.

[0013] In one embodiment of this utility model, the end of the mounting shaft segment away from the hanging member is provided with a chamfer.

[0014] In one embodiment of this utility model, the limiting end cap is provided with a mating cavity into which the end of the mounting shaft segment away from the hanger extends, and the limiting end cap and the mounting shaft segment are provided with connecting holes that are axially aligned and connected for disassembling and installing connecting fasteners.

[0015] To achieve the above objectives, a second aspect of this utility model provides a lifting device, wherein the lifting device includes a lifting drive mechanism and lifting components as described above, the number of lifting components is at least two, the at least two lifting components are used for one-to-one installation of at least two lifting holes for lifting workpieces, and the lifting drive mechanism is connected to the lifting parts of the at least two lifting components respectively.

[0016] To achieve the above objectives, a third aspect of this utility model provides an electrophoresis production line, wherein the electrophoresis production line includes an electrophoresis pool and a lifting device according to the above description, the lifting device being disposed above the electrophoresis pool.

[0017] Through the above technical solution, the hoisting assembly provided by this utility model has the following beneficial effects: When using the above-mentioned hoisting assembly, which includes a hanging component, a workpiece hoisting module, and a sealing module, one end of the shaft mounting seat in the workpiece hoisting module is connected to the hanging component, and the other end is provided with a mounting shaft section. The hanging component can be used to connect with the hoisting drive mechanism. The mounting shaft section passes through the hoisting hole of the hoisting workpiece. The limiting end cap can be detachably set on the mounting shaft section and used to axially limit the hoisting workpiece, thereby achieving stable hoisting of the workpiece on the mounting shaft section. At the same time, the workpiece hoisting module has a first sealing groove and a second sealing groove at both ends of the hoisting hole. The first sealing ring and the second sealing ring in the sealing module are respectively placed in the first sealing groove and the second sealing groove, so that the first sealing ring and the second sealing ring seal the hoisting hole at both ends of the hoisting hole. Thus, during the electrophoretic coating operation, the hoisting hole can be isolated from the electrophoretic liquid, eliminating the need to treat the electrophoretic paint in the hoisting hole after the electrophoretic coating is completed, thereby improving production efficiency.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a structural schematic diagram of a hoisting assembly according to an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of one of the hoisting components according to an embodiment of the present utility model; Figure 3 This is a structural schematic diagram of the limiting end cap according to an embodiment of the present utility model; Figure 4 This is a partial structural diagram of another hoisting component according to one embodiment of the present utility model.

[0020] Explanation of reference numerals in the attached figures: Detailed Implementation

[0021] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0022] The following description, with reference to the accompanying drawings, describes the hoisting components, hoisting devices, and electrophoresis production line of this utility model.

[0023] like Figures 1 to 4 As shown, this utility model provides a hoisting assembly, wherein the hoisting assembly includes: Hanging component 100; The workpiece hoisting module includes a shaft mounting base 200 and a limiting end cap 300. One end of the shaft mounting base 200 is connected to the hoisting component 100, and the other end is provided with a mounting shaft section 222. The mounting shaft section 222 can pass through the hoisting hole of the hoisting workpiece 500. The limiting end cap 300 is detachably provided on the mounting shaft section 222 and is used to axially limit the hoisting workpiece 500. The workpiece hoisting module is provided with a first sealing groove 310 and a second sealing groove 223 at both ends of the hoisting hole. The sealing module includes a first sealing ring and a second sealing ring, which are placed in the first sealing groove 310 and the second sealing groove 223 respectively. Both the first sealing ring and the second sealing ring can seal the end of the lifting hole.

[0024] When using the above-mentioned hoisting assembly, since it includes a hoisting component 100, a workpiece hoisting module, and a sealing module, one end of the shaft mounting seat 200 in the workpiece hoisting module is connected to the hoisting component 100, and the other end is provided with a mounting shaft section 222. The hoisting component 100 can be connected to the hoisting drive mechanism. The mounting shaft section 222 passes through the hoisting hole of the workpiece 500. The limiting end cap 300 is detachably provided on the mounting shaft section 222 and is used to axially limit the workpiece 500, thereby enabling the workpiece 500 to be hoisted on the mounting shaft section 222. Stable hoisting is achieved. Simultaneously, the workpiece hoisting module has a first sealing groove 310 and a second sealing groove 223 at both ends of the hoisting hole. The first sealing ring and the second sealing ring in the sealing module are respectively placed in the first sealing groove 310 and the second sealing groove 223, so that the first sealing ring and the second sealing ring seal the hoisting hole at both ends. This isolates the hoisting hole from the electrophoretic coating liquid during electrophoretic coating operations, eliminating the need to treat the electrophoretic paint inside the hoisting hole after electrophoretic coating is completed, thus improving production efficiency.

[0025] Furthermore, the hanging component 100 can be configured as a hanging ear plate, with its lower end connected to the shaft mounting base 200. Specifically, it can be provided with a mounting hole through which one end of the shaft mounting base 200 can pass, and its upper end is provided with a fixing hole 101 for connection with the lifting drive mechanism. In addition, the first sealing ring and the second sealing ring can be configured to seal against the inner wall of the lifting hole or to seal against the periphery of the lifting hole.

[0026] In one embodiment of this utility model, a first sealing groove 310 is provided on the side of the limiting end cap 300 facing the lifting workpiece 500, and the first sealing groove 310 is located on the outer side of the lifting hole, so that the first sealing ring is sealed and fitted to the periphery of the lifting hole. By setting the first sealing groove 310 on the limiting end cap 300, the lifting hole can be sealed not only from the side of the lifting workpiece 500 corresponding to it, but also from the side covered by the first sealing ring. Therefore, it is applicable to lifting workpieces 500 that have assembly accuracy requirements for both the lifting hole and the side. Specifically, if the workpiece 500 being hoisted has assembly accuracy requirements on only one side, and the first sealing groove 310 is provided on the limiting end cover 300, the second sealing groove 223 can be provided on the mounting shaft section 222 so that it can be sealed and fitted with the inner wall of the hoisting hole at the other end. If the workpiece 500 being hoisted has assembly accuracy requirements on both sides, and the first sealing groove 310 is provided on the limiting end cover 300, the second sealing groove 223 can be provided on the axial limiting surface 211 so that it can be sealed and fitted with the periphery of the hoisting hole at the other end.

[0027] In one embodiment of this utility model, the second sealing groove 223 is located at the end of the mounting shaft section 222 away from the limiting end cover 300, and the second sealing ring is sealed and fitted against the inner wall of the lifting hole. That is, when at least one side of the lifting workpiece 500 does not have assembly accuracy requirements and needs to be electrophoretically coated, this side can be set on the side away from the limiting end cover 300 when the lifting workpiece 500 is installed, and the second sealing ring is located on the mounting shaft section 222, so that the second sealing ring placed in the second sealing groove 223 is sealed and fitted against the inner wall of the lifting hole at the end of the lifting hole away from the limiting end cover 300. It should be noted that, outside the position of the second sealing ring, the gap between the axial limiting surface 211 and the lifting workpiece 500 allows for electrophoretic coating of the lifting workpiece 500. Furthermore, when there are no assembly accuracy requirements on both sides of the hoisted workpiece 500 and both require electrophoretic coating, the first sealing groove 310 can also be set on the mounting shaft section 222, so that the first sealing ring placed in the first sealing groove 310 can seal against the inner wall of the hoisting hole at the other end.

[0028] Understandably, both the first and second sealing rings are, but are not limited to, O-rings.

[0029] In one embodiment of this utility model, the shaft mounting base 200 has an axial limiting surface 211 at the end of the mounting shaft section 222 away from the limiting end cover 300. The axial limiting surface 211 and the limiting end cover 300 respectively axially limit the lifting workpiece 500 from opposite sides. That is, the axial limiting surface 211 can be directly formed on the shaft mounting base 200 without the need for additional components. When installing the lifting workpiece 500, the lifting workpiece 500 can be first fitted onto the mounting shaft section 222 with one side abutting against the axial limiting surface 211, and then the limiting end cover 300 can be installed on the other side to install the lifting workpiece 500 between the axial limiting surface 211 and the limiting end cover 300. Of course, this utility model is not limited to this. The number of limiting end caps 300 can also be set to two. The two limiting end caps 300 can be set at an axial interval along the mounting shaft section 222. The hoisting workpiece 500 can be located between the two limiting end caps 300. Alternatively, the hanging part 100 can be provided with an axial limiting surface 211.

[0030] In one embodiment of this utility model, the shaft mounting base 200 includes a bushing body 210 and a lifting shaft 220. The lifting shaft 220 includes a connecting shaft section and a mounting shaft section 222 arranged sequentially along its length. The connecting shaft section passes through the bushing body 210 and is detachably connected to the bushing body 210. The mounting shaft section 222 extends out of the bushing body 210. The end faces of the bushing body 210 and the mounting shaft section 222 on the same side are designated as axial limiting surfaces 211. By configuring the shaft mounting base 200 as a detachably connected bushing body 210 and lifting shaft 220, it facilitates processing, manufacturing, maintenance, and replacement. Specifically, the bushing body 210 and lifting shaft 220 can be detachably connected by a limiting pin 230 or threaded fasteners, or the connecting shaft section of the lifting shaft 220 is provided with external threads to be threadedly connected to the internal threads on the inner wall of the bushing body 210. In addition, the connection between the shaft mounting base 200 and the hanger 100 can be either that the end of the bushing body 210 away from the mounting shaft section 222 is connected to the hanger 100, or that the end of the connecting shaft section away from the mounting shaft section 222 extends out of the bushing body 210 and is connected to the hanger 100.

[0031] It should be noted that existing lifting devices are generally dedicated to specific machines, requiring different lifting devices to be manufactured for different models of lifting workpieces 500, resulting in high procurement and maintenance costs and management difficulties. In one embodiment of this utility model, the number of lifting shafts 220 is at least two, with the connecting shaft sections of the at least two lifting shafts 220 having the same shaft diameter, and the mounting shaft sections 222 having different shaft diameters. This allows different lifting workpieces 500 to share the bushing body 210 in the shaft mounting seat 200, thereby reducing procurement and maintenance costs and simplifying management. It can be understood that the common parts in the lifting assembly are the hanging component 100, the bushing body 210, and the support 400, while the lifting shaft 220, the limiting end cap 300, and the sealing module need to be selected according to the size of the lifting hole of the lifting workpiece 500.

[0032] In one embodiment of this utility model, the hanging member 100 is rotatably mounted on the shaft mounting base 200. This allows the hanging member 100 to adjust its position according to its center of gravity after being connected to the lifting drive mechanism. Specifically, the hanging member 100 has a mounting hole, and the lifting assembly also includes a support 400 with a supporting surface. One end of the shaft mounting base 200 passes through the mounting hole and connects to the support 400. The addition of the support 400 serves two purposes: axial positioning of the hanging member 100 and support for the lifting assembly and the lifting workpiece 500 on it. Furthermore, the shaft mounting base 200 also has a stop surface on the side of the hanging member 100 facing away from the support 400.

[0033] See Figure 4 In one embodiment of this utility model, the end of the mounting shaft segment 222 away from the hanger 100 is provided with a chamfer 224. The addition of the chamfer 224 can facilitate the mounting shaft segment 222 to pass through the lifting hole of the lifting workpiece 500. In addition, the shaft diameter of the mounting shaft segment 222 can be set to be 0.5mm smaller than the diameter of the lifting hole of the lifting workpiece 500.

[0034] Please see again Figures 1 to 4In one embodiment of this utility model, the limiting end cap 300 is provided with a mating cavity 320 into which the end of the mounting shaft segment 222 away from the hanger 100 extends. The addition of the mating cavity 320 facilitates the alignment and installation of the limiting end cap 300 and the mounting shaft segment 222. Specifically, the first sealing groove 310 is provided on the outside of the mating cavity 320, and the limiting end cap 300 and the mounting shaft segment 222 are provided with connecting holes that are axially aligned. The connecting holes are used for the disassembly and installation of the connecting fastener 330. Thus, the disassembly and connection of the two can be realized by the addition of the connecting holes and the connecting fastener 330. Further, the connecting fastener 330 includes a head and a rod. The rod passes through the connecting hole on the limiting end cap 300 and is threadedly connected to the connecting hole on the mounting shaft segment 222. The head abuts against the limiting end cap 300. Of course, this utility model is not limited to this. The limiting end cover 300 and the mounting shaft section 222 can also be configured to be threadedly connected to the mounting shaft section 222 through the inner wall of the docking cavity 320 to achieve disassembly connection.

[0035] Furthermore, this utility model also provides a lifting device, which includes a lifting drive mechanism and lifting components as described above. The number of lifting components is at least two, and each of the at least two lifting components is used to install itself one-to-one with at least two lifting holes of the workpiece 500. The lifting drive mechanism is connected to the hanging parts 100 of each of the at least two lifting components. Since the lifting device adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0036] Furthermore, this utility model also provides an electrophoresis production line, wherein the electrophoresis production line includes an electrophoresis pool and a lifting device according to the above description, the lifting device being disposed above the electrophoresis pool. Since the electrophoresis production line adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0037] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A hoisting assembly, characterized in that, The hoisting assembly includes: Hanging component (100); The workpiece hoisting module includes a shaft mounting base (200) and a limiting end cap (300). One end of the shaft mounting base (200) is connected to the hoisting component (100), and the other end is provided with a mounting shaft section (222). The mounting shaft section (222) can pass through the hoisting hole of the hoisting workpiece (500). The limiting end cap (300) is detachably provided on the mounting shaft section (222) and used to axially limit the hoisting workpiece (500). The workpiece hoisting module is provided with a first sealing groove (310) and a second sealing groove (223) at both ends of the hoisting hole. The sealing module includes a first sealing ring and a second sealing ring, which are placed in the first sealing groove (310) and the second sealing groove (223) respectively. Both the first sealing ring and the second sealing ring can seal the end of the lifting hole.

2. The hoisting assembly of claim 1, wherein, The first sealing groove (310) is provided on the side of the limiting end cap (300) facing the hoisting workpiece (500), and the first sealing groove (310) is located outside the hoisting hole, so that the first sealing ring is sealed and fitted with the periphery of the hoisting hole; And / or, the second sealing groove (223) is provided at one end of the mounting shaft section (222) away from the limiting end cap (300), and the second sealing ring is sealed and fitted against the inner wall of the lifting hole.

3. The hoisting assembly according to claim 1, characterized in that, The shaft mounting base (200) has an axial limiting surface (211) at one end of the mounting shaft section (222) away from the limiting end cover (300). The axial limiting surface (211) and the limiting end cover (300) respectively axially limit the hoisting workpiece (500) from opposite sides.

4. The hoisting assembly according to claim 3, characterized in that, The shaft mounting base (200) includes a bushing body (210) and a lifting shaft (220). The lifting shaft (220) includes a connecting shaft section and an installation shaft section (222) arranged sequentially along the length direction. The connecting shaft section passes through the bushing body (210) and is detachably connected to the bushing body (210). The installation shaft section (222) extends out of the bushing body (210). The end face of the bushing body (210) and the installation shaft section (222) on the same side is set as the axial limiting surface (211).

5. The hoisting assembly according to claim 4, characterized in that, The number of the hoisting shafts (220) is at least two, the shaft diameter of the connecting shaft section of the at least two hoisting shafts (220) is set to be the same, and the shaft diameter of the mounting shaft section (222) is set to be different.

6. The hoisting assembly according to any one of claims 1 to 5, characterized in that, The hanging component (100) is configured to be rotatably mounted on the shaft mounting base (200).

7. The hoisting assembly according to claim 6, characterized in that, The hanging component (100) is provided with a mounting hole, and the hoisting assembly further includes a support (400) forming a support surface. One end of the shaft mounting base (200) passes through the mounting hole and is connected to the support (400).

8. The hoisting assembly according to any one of claims 1 to 5, characterized in that, The end of the mounting shaft section (222) away from the hanger (100) is provided with a chamfer (224); And / or, the limiting end cap (300) is provided with a mating cavity (320) into which one end of the mounting shaft segment (222) away from the hanger (100) extends, and the limiting end cap (300) and the mounting shaft segment (222) are provided with connecting holes that are axially connected, the connecting holes being used for disassembling and installing connecting fasteners (330).

9. A lifting device, characterized in that, The lifting device includes a lifting drive mechanism and a lifting assembly according to any one of claims 1 to 8, wherein the number of the lifting assemblies is at least two, and the at least two lifting assemblies are used for one-to-one installation of at least two lifting holes of the lifting workpiece (500), and the lifting drive mechanism is connected to the hanging parts (100) of the at least two lifting assemblies respectively.

10. An electrophoresis production line, characterized in that, The electrophoresis production line includes an electrophoresis pool and a lifting device according to claim 9, the lifting device being disposed above the electrophoresis pool.