Lifting drive roller assembly, lifting drive device and construction lift

Abstract

The application belongs to the technical field of engineering construction equipment, and particularly relates to a lifting driving roller assembly, a lifting driving device and a construction hoist. The lifting driving roller assembly comprises a reference shaft neck and an eccentric shaft neck connected in an axial direction, an axis of the reference shaft neck and an axis of the eccentric shaft neck are provided with an eccentric distance, a roller bearing is sleeved on the eccentric shaft neck, and a roller is sleeved on the eccentric shaft neck and connected with the roller bearing. The construction hoist comprises a lifting driving device, a guide rail frame device and a cage system, and the eccentric roller assembly is used for realizing the movement cooperation between the lifting driving device and the guide rail frame device. In the application, due to manufacturing errors, there is a gap between the roller and the guide rail frame device. The position adjustment of the roller in a plane perpendicular to the axis can be realized by rotating the eccentric wheel shaft to eliminate the gap between the roller and the guide rail frame device, so that the roller and the guide rail frame device are assembled, and the influence of the manufacturing errors on the connection between the guide rail part and the driving part is overcome.

Description

Technical Field

[0001] This application belongs to the technical field of engineering construction equipment, specifically relating to a lifting drive roller assembly, a lifting drive device, and a construction hoist. Background Technology

[0002] Construction hoists are one of the important special equipment for transporting people and materials to higher places on construction sites. A construction hoist consists of a guide rail section, a drive section, and a cage section. The drive section and the guide rail section move together to drive the cage section to lift and lower. However, manufacturing errors may occur in the production process of the drive section and the guide rail section, resulting in the drive section being unable to connect effectively with the guide rail section. Utility Model Content

[0003] The purpose of this application is to provide a lifting drive roller assembly, a lifting drive device, and a construction lift, which aims to overcome the influence of manufacturing errors on the connection between the guide rail part and the drive part.

[0004] To achieve the above objectives, this application provides a lifting drive roller assembly, comprising: An eccentric wheel shaft includes a reference journal and an eccentric journal connected axially. The reference journal is used for rotatable connection with a fixed structure. An annular groove is provided on the outer peripheral wall of the eccentric journal. A roller bearing is sleeved on the eccentric journal and located in the annular groove, wherein the diameter of the outer ring of the roller bearing is larger than the diameter of the outer peripheral wall of the eccentric journal; The roller is fitted onto the eccentric journal and connected to the outer ring of the roller bearing.

[0005] In some embodiments, the lifting drive roller assembly further includes an end cap mounted on the axial end of the eccentric journal away from the reference journal and having an annular dust-proof portion protruding from the outer wall surface of the eccentric journal.

[0006] In some embodiments, an end cap mounting groove is formed on the axial end of the eccentric journal, and the end cap engages with the end cap mounting groove.

[0007] In some embodiments, the lifting drive roller assembly further includes a retaining ring, which is embedded between the roller bearing and the inner wall of the annular groove.

[0008] In some embodiments, the lifting drive roller assembly further includes an eccentric wheel shaft fastening nut that is fastened to the reference journal.

[0009] A second aspect of this application provides a lifting drive device for a construction hoist, the lifting drive device being used to drive the cage system of the construction hoist to rise and fall along the guide rail frame device of the construction hoist, the lifting drive device including the lifting drive roller assembly as described above, the lifting drive roller assembly being used to move and cooperate with the guide rail frame device.

[0010] In some embodiments, there are multiple lifting drive roller assemblies, some of which are lifting drive back roller assemblies, the rollers of which are lifting drive back rollers. The lifting drive device includes a movable member for interacting with the guide rail frame device. The lifting drive back rollers are spaced apart from the movable member and form a lifting drive clamping part for clamping the guide rail frame device.

[0011] In some embodiments, there are multiple lifting drive roller assemblies, wherein at least two of the lifting drive roller assemblies are lifting drive side roller assemblies, the rollers of the lifting drive side roller assemblies are lifting drive side rollers, and the two lifting drive side rollers are arranged at intervals and form a transverse clamping part for clamping the guide rail frame device.

[0012] In some embodiments, there are multiple lifting drive roller assemblies, some of which are lifting drive hook wheel assemblies, and the eccentric wheel shaft of the lifting drive hook wheel assembly is perpendicular to the eccentric wheel shaft of the lifting drive side wheel assembly.

[0013] A third aspect of this application provides a construction hoist, including the lifting drive device of the construction hoist as described above.

[0014] The lifting drive roller assembly, lifting drive device, and construction hoist provided in this application have the following beneficial effects through the above technical solutions: In most construction hoists, the drive unit and guide rail unit move and cooperate with each other via rollers. The eccentric roller assembly provided in this application is installed on the drive unit and moves and cooperates with the guide rail unit. When a gap exists between the roller and the guide rail unit due to manufacturing errors, the position of the roller in a plane perpendicular to the axis is adjusted by rotating the eccentric wheel shaft. This allows the roller to be assembled with the guide rail unit, thereby overcoming the influence of manufacturing errors on the connection between the guide rail unit and the drive unit.

[0015] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. 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 schematic diagram of the lifting drive back wheel assembly according to a specific embodiment of this application; Figure 2 This is a schematic diagram illustrating the adjustment of the position of the lifting drive back wheel using an eccentric wheel shaft according to a specific embodiment of this application; Figure 3 This is an assembly diagram of the lifting drive device and the guide rail frame device according to a specific embodiment of this application; Figure 4 This is a schematic diagram of the lifting drive device according to a specific embodiment of this application; Figure 5 This is a schematic diagram of the assembly of the lifting drive back wheel, the lifting drive gear, and the lifting drive rack according to a specific embodiment of this application; Figure 6 This is a schematic diagram of the lifting drive side wheel assembly according to a specific embodiment of this application; Figure 7 This is a schematic diagram illustrating the adjustment of the position of the lifting drive side wheel using an eccentric wheel shaft according to a specific embodiment of this application; Figure 8 This is a schematic diagram of the lifting drive hook wheel assembly according to a specific embodiment of this application; Figure 9 This is a schematic diagram illustrating the adjustment of the lifting drive hook wheel position using an eccentric wheel shaft according to a specific embodiment of this application; Figure 10 This is a structural schematic diagram of a construction hoist according to a specific embodiment of this application.

[0017] Explanation of reference numerals in the attached figures 200. Guide rail frame device; 21. Lifting drive rack; 22. Main chord; 23. Horizontal bar; 400. Lifting drive device; 41. Lifting drive gear; 42. Lifting drive back wheel; 44. Eccentric wheel shaft; 441. Reference journal; 442. Eccentric journal; 443. Roller bearing; 444. Eccentric wheel shaft fastening nut; 445. Retaining ring; 446. End cover; 447. Washer; 46. Lifting drive frame; 47. Lifting drive plate; 48. Lifting drive side wheel; 49. Lifting drive hook wheel; 500. Cage system. Detailed Implementation

[0018] The specific embodiments of this application 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 this application.

[0019] The following description, with reference to the accompanying drawings, outlines the terminology of the lifting drive roller assembly, lifting drive device, and construction hoist according to this application.

[0020] like Figure 1 and Figure 2 As shown, a specific embodiment of this application provides a lifting drive roller assembly, including an eccentric shaft 44, a roller bearing 443, and a roller. The eccentric shaft 44 includes a reference journal 441 and an eccentric journal 442 connected axially. An eccentric distance is provided between the axis of the reference journal 441 and the axis of the eccentric journal 442. The reference journal 441 is used for rotatable connection with a fixed structure. An annular groove is provided on the outer peripheral wall of the eccentric journal 442. The roller bearing 443 is sleeved on the eccentric journal 442 and located in the annular groove. The diameter of the outer ring of the roller bearing 443 is larger than the diameter of the outer peripheral wall of the eccentric journal 442. The roller is sleeved on the eccentric journal 442 and connected to the outer ring of the roller bearing 443.

[0021] Construction hoists are one of the important special equipment for transporting personnel and materials to higher places on construction sites. A construction hoist includes a lifting drive device 400 as the driving part and a guide rail frame device 200 as the guide rail part. The lifting drive device 400 and the guide rail frame device 200 move in coordination to drive the cage system 500 to lift. The lifting drive roller assembly is a specific way to achieve the moving coordination between the lifting drive device 400 and the guide rail frame device 200. In this application, if a gap exists between the roller and the guide rail frame device 200 due to manufacturing errors, preventing complete assembly, this application uses the eccentric wheel shaft 44 to adjust the position of the roller in a plane perpendicular to the axis, thereby eliminating the gap between the roller and the guide rail frame device 200, thus completing the assembly of the roller and the guide rail frame device 200, and overcoming the influence of manufacturing errors on the connection between the guide rail part and the drive part.

[0022] Specifically, the roller mounted on the eccentric journal 442 will also rotate around the axis of the reference journal 441 when the reference journal 441 rotates. Due to the eccentricity, the roller will be offset relative to the axis of the reference journal 441. The reference journal 441 is pivotally connected to the fixed structure of the lifting drive device 400. Therefore, the position adjustment of the roller relative to the fixed structure of the lifting drive device 400 is realized.

[0023] Furthermore, in actual use, foreign objects may enter the roller bearing 443 and cause damage to the roller bearing 443. By setting an annular groove on the eccentric wheel shaft 44 and installing the roller bearing 443 in the annular groove, foreign objects can be prevented from entering the roller bearing 443, thereby improving the service life of the lifting drive roller assembly.

[0024] In some embodiments, the lifting drive roller assembly further includes an end cap 446, which is mounted on the axial end of the eccentric journal 442 away from the reference journal 441 and has an annular dust-proof portion protruding from the outer wall surface of the eccentric journal 442. Mounting the roller bearing 443 within the annular groove primarily prevents foreign objects from entering the connection between the inner ring of the roller bearing 443 and the eccentric journal 442, while the end cap 446 prevents foreign objects from entering the connection between the outer ring of the roller bearing 443 and the roller, thereby improving the service life of the lifting drive roller assembly.

[0025] Furthermore, an end cap 446 mounting groove is formed on the axial end of the eccentric journal 442. The end cap 446 and the end cap 446 mounting groove are engaged to make the groove wall of the end cap 446 and the end cap 446 limit the engagement along the axial direction of the eccentric journal 442, thereby preventing the end cap 446 and the eccentric journal 442 from separating along the axial direction of the eccentric journal 442.

[0026] In some embodiments, the lifting drive roller assembly also includes a retaining ring 445, which is embedded between the roller bearing 443 and the inner wall of the annular groove. Since the roller bearing 443 needs to be installed in the annular groove, the axial length of the annular groove must be greater than the axial length of the roller bearing 443. Therefore, the roller bearing 443 will move axially after being installed in the annular groove. By providing the retaining ring 445, axial movement of the roller bearing 443 is prevented, thus avoiding collision and wear between the roller bearing 443 and the eccentric journal 442, thereby improving the service life of the lifting drive roller assembly and enhancing the stability of the roller bearing 443, thereby increasing the stability of the movement between the roller and the guide rail device 200.

[0027] In some embodiments, the lifting drive roller assembly also includes an eccentric wheel shaft fastening nut 444 that is fastened to the reference journal 441 to fix the adjusted eccentric wheel shaft 44, thereby preventing the eccentric wheel shaft 44 from rotating.

[0028] Furthermore, a washer 447 is provided between the eccentric wheel shaft fastening nut 444 and the fixing structure.

[0029] like Figure 3 and Figure 4As shown in the illustration, a specific embodiment of this application also provides a lifting drive device 400 for a construction hoist. The lifting drive device 400 is used to drive the cage system 500 of the construction hoist to move up and down along the guide rail frame device 200. The lifting drive device 400 includes a lifting drive roller assembly for movable cooperation with the guide rail frame device 200. Since the lifting drive device 400 employs all embodiments of the lifting drive roller assembly, it possesses all the beneficial effects of the lifting drive roller assembly.

[0030] In a specific embodiment of this application, the guide rail frame device 200 includes a drive rail and a guide rail, and the lifting drive device 400 includes a lifting drive device body, a lifting drive assembly, and a drive guide assembly. Both the lifting drive assembly and the drive guide assembly are mounted on the lifting drive device body. The lifting drive assembly interacts with the drive rail to achieve lifting, and the drive guide assembly is slidably mounted on the guide rail to achieve movement between the lifting drive device body and the guide rail. By adding a drive guide assembly connected to the guide rail, the connection stability between the guide rail and the drive part can be effectively increased. Furthermore, by adjusting the lifting drive assembly and the drive guide assembly on the lifting drive device body, their spatial positions can be adjusted, thus ensuring smooth assembly of both the lifting drive assembly and the drive guide assembly with the guide rail frame device 200.

[0031] Specifically, the guide rail frame device 200 also includes a guide rail frame body, which includes multiple main chord rods 22 extending vertically and horizontal rods 23 connecting adjacent main chord rods 22. The main chord rods 22 can serve as guide rails. The drive rail includes a lifting drive rack 21, which includes teeth and a back arranged laterally opposite to each other. The teeth of the lifting drive rack 21 have a toothed structure, and the back of the lifting drive rack 21 has a planar structure. The lifting drive rack 21 is installed on the horizontal rod 23 by bolt connection or welding. The lifting drive device body includes a lifting drive frame 46 and a lifting drive plate 47. The lifting drive rack 21 is located between the horizontal rod 23 and the lifting drive plate 47. The lifting drive assembly is installed on the lifting drive plate 47 and located between the horizontal rod 23 and the lifting drive plate 47 to interact with the lifting drive rack 21. The drive guide assembly is installed on the lifting drive frame 46 and moves in coordination with the main chord rods 22.

[0032] Furthermore, there are two main chord rods 22, which are arranged laterally at intervals. A horizontal rod 23 extends laterally to connect the two main chord rods 22. The horizontal rod 23 and the lifting drive plate 47 are arranged longitudinally at intervals. The lifting drive frame 46 is mounted on the main chord rods 22 through a drive guide assembly.

[0033] like Figure 1 , Figure 2 and Figure 5 In some embodiments, the lifting drive assembly includes a lifting drive gear 41 as a moving part, and multiple lifting drive roller assemblies. Some of these lifting drive roller assemblies form lifting drive back roller assemblies, with each back roller being a lifting drive back roller 42. The lifting drive back rollers 42 and the lifting drive gear 41 are arranged laterally at intervals to form a lifting drive clamping portion for clamping the lifting drive rack 21. The lifting drive gear 41 meshes with the teeth of the lifting drive rack 21, and the roller surface of the lifting drive back roller 42 abuts against the back of the lifting drive rack 21. The lifting drive back roller 42 is mounted on the lifting drive plate 47 via an eccentric shaft 44 and an eccentric shaft fastening nut 444. The position of the lifting drive back roller 42 is adjusted by adjusting the eccentric shaft 44 of the lifting drive back roller assembly, so that the teeth of the lifting drive gear 41 and the lifting drive rack 21 mesh better and are less likely to separate during operation, thereby enhancing the connection stability between the lifting drive assembly and the drive rail.

[0034] Specifically, when manufacturing errors cause a shift in the relative positions of the lifting drive back wheel 42 and the lifting drive rack 21, the position of the lifting drive back wheel 42 is adjusted using the eccentric wheel shaft 44 to make the back of the lifting drive back wheel 42 abut against the back of the lifting drive rack 21. This ensures better meshing of the teeth of the lifting drive gear 41 and the lifting drive rack 21 and prevents them from separating during operation. This prevents excessively tight meshing, excessively loose meshing, or failure to mesh, thereby overcoming the impact of manufacturing errors on the connection between the lifting drive device 400 and the guide rail device 200, and ensuring the stability of the lifting drive device 400 during the lifting process.

[0035] Furthermore, the eccentric wheel shaft fastening nut 444 and the lifting drive back wheel 42 are located on both sides of the lifting drive plate 47 along the longitudinal direction. After the eccentric wheel shaft 44 is rotated to adjust the lifting drive back wheel 42 into position, the reference journal 441 and the lifting drive plate 47 are locked by screwing the eccentric wheel shaft fastening nut 444 until it contacts the lifting drive plate 47, so as to restrict the relative rotation between the reference journal 441 and the lifting drive plate 47, thereby completing the position adjustment of the lifting drive back wheel 42.

[0036] like Figure 6 and Figure 7As shown, in some embodiments, there are multiple lifting drive roller assemblies, with at least two of them forming lifting drive side wheel assemblies. These assemblies are mounted on the lifting drive frame 46 as part of the drive guide assembly. The rollers of each lifting drive side wheel assembly are lifting drive side wheels 48. The roller surfaces of the lifting drive side wheels 48 roll in contact with the outer wall surface of the main chord 22. The axles of the lifting drive side wheels 48 extend longitudinally and are connected to the lifting drive frame 46. The lifting drive side wheels 48 are arranged in pairs laterally and multiple pairs vertically. The two pairs of lifting drive side wheels 48 are respectively mounted on the two sides of the lifting drive frame 46 laterally. Both main chords 22 are located between the two pairs of lifting drive side wheels 48 and roll in contact with each pair. The lifting drive device 400 and the guide rail frame device 200 are positioned laterally by the laterally spaced two pairs of lifting drive side wheels 48 and the main chord 22.

[0037] Specifically, when manufacturing errors cause a shift in the relative positions of the lifting drive side wheel 48 and the main chord 22, the position of the lifting drive side wheel 48 is adjusted using the eccentric wheel shaft 44 to ensure that the roller surface of the lifting drive side wheel 48 abuts against the outer wall surface of the main chord 22. This prevents the lifting drive side wheel 48 from separating from the outer wall surface of the main chord 22 during operation, thus ensuring the rolling fit between the lifting drive side wheel 48 and the main chord 22. This, in turn, ensures the stability of the lifting drive device 400 during the lifting process and overcomes the impact of manufacturing errors on the connection between the lifting drive device 400 and the guide rail device 200.

[0038] Furthermore, the eccentric wheel shaft fastening nut 444 and the lifting drive side wheel 48 are located on both sides of the lifting drive frame 46 along the longitudinal direction. After the eccentric wheel shaft 44 is rotated to adjust the lifting drive side wheel 48 into position, the reference journal 441 and the lifting drive frame 46 are locked by screwing the eccentric wheel shaft fastening nut 444 until it contacts the lifting drive frame 46, so as to restrict the relative rotation between the reference journal 441 and the lifting drive frame 46, thereby completing the position adjustment of the lifting drive side wheel 48.

[0039] like Figure 8 and Figure 9As shown, in some embodiments, there are multiple lifting drive roller assemblies, some of which are lifting drive hook wheel assemblies. The eccentric wheel shaft 44 of the lifting drive hook wheel assembly is perpendicular to the eccentric wheel shaft 44 of the lifting drive side wheel assembly. The lifting drive hook wheel assembly is mounted on the lifting drive frame 46 as part of the drive guide assembly. The roller of the lifting drive hook wheel assembly is a lifting drive hook wheel 49. The roller surface of the lifting drive hook wheel 49 rolls with the outer wall surface of the main chord 22. The wheel axle of the lifting drive hook wheel 49 extends laterally and is connected to the lifting drive frame 46. The lifting drive hooks 49 are arranged in pairs along the horizontal direction and multiple pairs along the vertical direction. The two pairs of lifting drive hooks 49 are respectively installed on the two sides of the lifting drive frame 46 along the horizontal direction. The two main chords 22 are respectively in rolling cooperation with the two sets of lifting drive hooks 49. The lifting drive hooks 49 are located on the outer side of the main chords 22 along the longitudinal direction. The lifting drive device 400 and the guide rail frame device 200 are limited in the longitudinal direction by the lifting drive hooks 49 and the main chords 22 in a limiting cooperation.

[0040] Specifically, when the relative positions of the lifting drive hook wheel 49 and the main chord 22 shift due to manufacturing errors, the position of the lifting drive hook wheel 49 is adjusted using the eccentric wheel shaft 44 so that the roller surface of the lifting drive hook wheel 49 abuts against the outer wall surface of the main chord 22. This ensures that the lifting drive hook wheel 49 and the outer wall surface of the main chord 22 are not easily separated during operation, thereby ensuring the rolling fit between the lifting drive hook wheel 49 and the main chord 22. This, in turn, ensures the stability of the lifting drive device 400 during the lifting process and overcomes the impact of manufacturing errors on the connection between the lifting drive device 400 and the guide rail frame device 200.

[0041] Furthermore, the eccentric wheel shaft fastening nut 444 and the lifting drive hook wheel 49 are located on both sides of the lifting drive frame 46 in the lateral direction. After the eccentric wheel shaft 44 is rotated to adjust the lifting drive hook wheel 49 into position, the reference journal 441 and the lifting drive frame 46 are locked by screwing the eccentric wheel shaft fastening nut 444 until it contacts the lifting drive frame 46, so as to restrict the relative rotation between the reference journal 441 and the lifting drive frame 46, thereby completing the position adjustment of the lifting drive hook wheel 49.

[0042] In this application, the installation positions of the lifting drive back wheel 42, the lifting drive side wheel 48, and the lifting drive hook wheel 49 are adjusted by adjusting the eccentric wheel shaft 44 to solve the assembly problem caused by manufacturing errors, thereby overcoming the influence of manufacturing errors on the connection between the drive part and the guide rail part.

[0043] like Figure 10As shown in the illustration, a specific embodiment of this application also provides a construction hoist, including a lifting drive device 400, a guide rail frame device 200, and a cage system 500. Since the construction hoist employs all the embodiments of the lifting drive device 400 described above, it possesses all the beneficial effects brought about by the lifting drive device 400.

[0044] In the description of this application, 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," 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 components; 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. 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.

[0047] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A lifting drive roller assembly, characterized in that, include: The eccentric wheel shaft (44) includes a reference journal (441) and an eccentric journal (442) connected along the axial direction. An eccentric distance is provided between the axis of the reference journal (441) and the axis of the eccentric journal (442). The reference journal (441) is used to rotatably connect with a fixed structure. An annular groove is provided on the outer peripheral wall of the eccentric journal (442). A roller bearing (443) is sleeved on the eccentric journal (442) and located in the annular groove. The diameter of the outer ring of the roller bearing (443) is larger than the diameter of the outer peripheral wall of the eccentric journal (442). The roller is fitted onto the eccentric journal (442) and connected to the outer ring of the roller bearing (443).

2. The lifting drive roller assembly according to claim 1, characterized in that, The lifting drive roller assembly also includes an end cap (446), which is mounted on the axial end of the eccentric journal (442) away from the reference journal (441) and has an annular dust-proof portion protruding from the outer wall surface of the eccentric journal (442).

3. The lifting drive roller assembly according to claim 2, characterized in that, An end cap (446) mounting groove is formed on the axial end of the eccentric journal (442), and the end cap (446) is engaged with the end cap (446) mounting groove.

4. The lifting drive roller assembly according to claim 1, characterized in that, The lifting drive roller assembly also includes a retaining ring (445), which is embedded between the roller bearing (443) and the inner wall of the annular groove.

5. The lifting drive roller assembly according to claim 1, characterized in that, The lifting drive roller assembly also includes an eccentric wheel shaft fastening nut (444) that is fastened to the reference journal (441).

6. A lifting drive device for a construction hoist, characterized in that, The lifting drive device (400) is used to drive the cage system (500) of the construction hoist to move up and down along the guide rail frame device (200) of the construction hoist. The lifting drive device (400) includes a lifting drive roller assembly according to any one of claims 1 to 5, the lifting drive roller assembly being used to move in cooperation with the guide rail frame device (200).

7. The lifting drive device according to claim 6, characterized in that, The number of lifting drive roller assemblies is multiple, and some of the lifting drive roller assemblies are lifting drive back roller assemblies. The rollers of the lifting drive back roller assembly are lifting drive back rollers (42). The lifting drive device (400) includes a moving member for interacting with the guide rail device (200). The lifting drive back rollers (42) are arranged at intervals with the moving member and form a lifting drive clamping part for clamping the guide rail device (200).

8. The lifting drive device according to claim 6, characterized in that, The number of lifting drive roller assemblies is multiple, of which at least two of the lifting drive roller assemblies are lifting drive side wheel assemblies, the rollers of the lifting drive side wheel assembly are lifting drive side wheels (48), and the two lifting drive side wheels (48) are arranged at intervals and form a transverse clamping part for clamping the guide rail frame device (200).

9. The lifting drive device according to claim 8, characterized in that, The number of lifting drive roller assemblies is multiple, and some of the lifting drive roller assemblies are lifting drive hook wheel assemblies. The eccentric wheel shaft (44) of the lifting drive hook wheel assembly is perpendicular to the eccentric wheel shaft (44) of the lifting drive side wheel assembly.

10. A construction hoist, characterized in that, Includes a lifting drive device (400) for a construction hoist according to any one of claims 6 to 9.

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