Hoisting mechanism and operation machinery

Abstract

A hoisting mechanism and operation machinery. The hoisting mechanism comprises a winding drum (1), a driving device (2), an adapter flange (3) and an adapter shaft (4), wherein the winding drum (1) is rotatably mounted in a winch box (11); the driving device (2) is provided with a transmission shaft (21); the transmission shaft (21) is in transmission connection with the winding drum (1); the adapter flange (3) is arranged between the winch box (11) and the driving device (2); the adapter flange (3) is provided with a shaft bore (31); the adapter shaft (4) is arranged between the transmission shaft (21) and the winding drum (1); the adapter shaft (4) is rotatably arranged in the shaft bore (31); and a first end of the adapter shaft (4) is connected to the transmission shaft (21), and a second end of the adapter shaft (4) is connected to a central shaft of the winding drum (1). In the hoisting mechanism, the winch box (11) is connected to the driving device (2) by means of the adapter flange (3), so as to ensure that the transmission shaft (21) and the central shaft of the winding drum (1) are always coaxially arranged. Power of the transmission shaft (21) is transmitted to the winding drum (1) by means of the adapter shaft (4), such that the problem of the transmission shaft being not capable of matching the central shaft of the winding drum due to having different sizes is effectively solved, thereby improving the universality of the driving device.

Description

Lifting mechanism and operating machinery

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311432284.7, filed on October 31, 2023, entitled “Lifting Mechanism and Operating Machinery,” which is incorporated herein by reference in its entirety. Technical Field

[0003] The present application relates to the technical field of lifting equipment, and in particular to a lifting mechanism and an operating machine. Background Art

[0004] The lifting mechanism of traditional operating machinery such as cranes is composed of a hydraulic motor, a reducer, a drum, a wire rope, etc., and is mainly raised and lowered by the hydraulic motor to drive the winch structure.

[0005] In the existing technology, the driving shaft of the hydraulic motor is usually connected to the reducer and the connecting shaft of the drum in sequence. The connection process requires strict matching of the dimensions of the driving shaft and the reducing gear connecting shaft. Generally, one type of driving shaft corresponds to one type of reducing gear, and it is difficult to match one driving shaft with multiple reducing gears. In addition, since the driving shaft and the coupling connecting shaft are not fixed at the connection point and are in a floating state, the system is prone to vibration due to the matching gap and the different axes of the transmission shafts at both ends during the rotation process, causing the mechanism to vibrate and make abnormal noises, which directly affects the stability of the transmission system, generates additional vibration and noise, and affects the working efficiency and service life of the lifting mechanism.

[0006] Summary of the Invention

[0007] The present application provides a lifting mechanism and an operating machine to solve the defect of poor versatility of the drive shaft in the lifting mechanism of the prior art, so that the drive shaft can adapt to reels of different sizes.

[0008] In a first aspect, the present application provides a lifting mechanism, comprising:

[0009] A drum rotatably mounted in the hoist box;

[0010] A driving device is provided with a transmission shaft, wherein the transmission shaft is in driving connection with the reel;

[0011] An adapter flange is provided between the hoist box and the driving device for connecting the two, and the adapter flange is provided with an axial hole;

[0012] A transfer shaft is arranged between the transmission shaft and the reel. The transfer shaft is rotatably arranged in the shaft hole. A first end of the transfer shaft is connected to the transmission shaft, and a second end of the transfer shaft is connected to the central axis of the reel.

[0013] According to the lifting mechanism provided in the present application, the shaft hole is arranged at the center of the adapter flange, a pair of angular contact bearings are arranged in the shaft hole, and the pair of angular contact bearings are sleeved on the adapter shaft.

[0014] According to the lifting mechanism provided in the present application, limiting members are provided at both ends of the shaft hole corresponding to a pair of angular contact bearings.

[0015] According to the lifting mechanism provided in the present application, the transmission shaft is inserted into the shaft hole, and the first end of the adapter shaft is connected to the transmission shaft via a spline pair.

[0016] According to the lifting mechanism provided in the present application, a reducer is arranged between the drum and the driving device, the reducer is arranged at the end of the winch box, and the output shaft of the reducer is connected to the central axis of the drum, and the input shaft of the reducer is connected to the second end of the adapter shaft through a spline pair.

[0017] According to the lifting mechanism provided in the present application, the end of the adapter flange facing away from the driving device is connected to the reducer, and a first sealing structure is provided at the connection between the adapter flange and the reducer.

[0018] The lifting mechanism provided by the present application further includes a fixed plate, the driving device is connected to the fixed plate, and one end of the adapter flange is sealed to the fixed plate.

[0019] According to the lifting mechanism provided in the present application, a second sealing structure is provided between the driving device and the fixed plate, and a third sealing structure is provided at the connection between the adapter flange and the fixed plate.

[0020] According to the lifting mechanism provided in the present application, the driving device includes a motor, an end of the motor is connected to the fixed plate, and the motor drives the transmission shaft to rotate.

[0021] In a second aspect, the present application also provides an operating machine, comprising a lifting mechanism as described in the first aspect.

[0022] The hoisting mechanism provided by the present application includes: a drum, a driving device, an adapter flange and an adapter shaft. The drum can be rotatably installed in the hoist box. The driving device is provided with a transmission shaft, and the transmission shaft is connected to the drum in a transmission manner. The adapter flange is provided between the hoist box and the driving device for connecting the two. The adapter flange is provided with an axis hole. The adapter shaft is provided between the transmission shaft and the drum, and the adapter shaft is rotatably provided in the axis hole. The first end of the adapter shaft is connected to the transmission shaft, and the second end of the adapter shaft is connected to the central axis of the drum. With such an arrangement, the hoist box and the driving device are connected by using the adapter flange. Connection, the drive shaft and the adapter shaft are connected in the shaft hole, and the shaft hole provides constraints to avoid the drive shaft and the adapter shaft from being in a floating state, thereby ensuring the stability of the transmission and ensuring that the drive shaft is always coaxially arranged with the center axis of the reel. By adopting the adapter shaft to transmit the power of the drive shaft to the reel, the problem that the drive shaft and the reel center axis cannot match due to different sizes is effectively solved. By replacing adapter shafts of different sizes, the adapter shaft can adapt to the connection between the drive shaft and the reel center shafts of different sizes, so that the drive shaft can adapt to the reel center shafts of different sizes, thereby improving the versatility of the drive device.

[0023] Similar to the existing hydraulic motor directly driving the reducer drum to move, the present invention can also directly drive the winch reducer through the motor to move the winch drum, using the motor instead of the hydraulic motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] FIG1 is a schematic structural diagram of a lifting mechanism provided in an embodiment of the present application;

[0026] FIG2 is a cross-sectional view of a lifting mechanism provided in an embodiment of the present application;

[0027] FIG3 is a schematic diagram of the connection structure between the adapter shaft and the adapter flange provided in an embodiment of the present application.

[0028] Figure numerals: 1. reel; 2. drive device; 21. transmission shaft; 3. adapter flange; 31. shaft hole; 4. adapter shaft; 41. internal spline; 5. angular contact bearing; 51. limiter; 6. reducer; 7. fixing plate; 8. positioning structure; 9. O-ring; 10. annular trough; 11. winch box. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0030] A lifting mechanism and an operating machine provided in an embodiment of the present application will be described below with reference to FIG1 to FIG3 .

[0031] This embodiment provides a lifting mechanism, including: a drum 1, a driving device 2, an adapter flange 3 and an adapter shaft 4.

[0032] Among them, the reel 1 is rotatably installed in the winch box 11, the driving device 2 is provided with a transmission shaft 21, the transmission shaft 21 is transmission-connected to the reel 1, the adapter flange 3 is arranged between the winch box 11 and the driving device 2, and is used to connect the two, and the adapter flange 3 is provided with an axis hole 31; the adapter shaft 4 is arranged between the transmission shaft 21 and the reel 1, and the adapter shaft 4 is rotatably arranged in the axis hole 31, the first end of the adapter shaft 4 is connected to the transmission shaft 21, and the second end of the adapter shaft 4 is connected to the center axis of the reel 1.

[0033] It can be seen from the above scheme that the present application adopts the adapter flange 3 to connect the winch box 11 with the drive device 2, ensuring that the transmission shaft 21 is always arranged coaxially with the center axis of the reel 1, and the power of the transmission shaft 21 is transmitted to the reel 1 by adopting the adapter shaft 4, which effectively solves the problem that the transmission shaft 21 and the center axis of the reel 1 cannot match due to different sizes. By replacing the adapter shaft 4, the adapter shaft 4 is adapted to the connection between the transmission shaft 21 and the center axis of the reel 1 of different sizes, so that the transmission shaft 21 can adapt to the center axis of the reel 1 of different sizes, thereby improving the versatility of the drive device 2.

[0034] In some embodiments, the driving device 2 uses an electric motor, preferably an AC motor. Compared with a hydraulic motor, the use of an electric motor to drive solves the problems of high noise, low efficiency and easy environmental pollution caused by hydraulic oil leakage.

[0035] The lifting mechanism provided in the embodiment of the present application is used to be installed at the tail of the turntable of the crane. The motor is located on the frame at the tail of the turntable. When the drum 1 and the winch box 11 are rotationally connected, the drive shaft 21 (power output shaft) of the motor drives the drum 1 through the adapter shaft 4 to perform winching.

[0036] In this embodiment, an axial hole 31 is provided at the center of the adapter flange 3 , a pair of angular contact bearings 5 ​​are provided in the axial hole 31 , and the pair of angular contact bearings 5 ​​are sleeved on the adapter shaft 4 . With such an arrangement, since the angular contact bearing 5 has good load-bearing capacity and can simultaneously withstand radial loads and axial loads, a pair of angular contact bearings 5 ​​is used to rotatably mount the adapter shaft 4 in the shaft hole 31 of the adapter flange 3, so that it can simultaneously withstand axial and radial forces. Compared with the use of a single bearing, such as a deep groove ball bearing, which can only withstand radial forces, the stability of the connection between the adapter shaft 4 and the adapter flange 3 is improved; moreover, the use of the angular contact bearing 5 also has the advantages of high speed, high precision and easy installation and adjustment. Since the contact angle between the outer ring and the inner ring of the angular contact bearing 5 is designed to be 15° or 25°, it has the characteristics of low friction, which increases the speed of the bearing and thus reduces the power loss of the transmission shaft 21; in addition, since the angular contact bearing 5 has high precision and repeatability, it is suitable for high-precision mechanical assembly. When used between the adapter shaft 4 and the adapter flange 3, it can avoid the problem of unstable structural operation. By adopting a separable type, the inner and outer rings of the angular contact bearing 5 can be separated, which is very convenient to install and adjust.

[0037] Referring to Figure 3, in this embodiment, the transmission shaft 21 is inserted into the shaft hole 31, and the first end of the adapter shaft 4 is connected to the transmission shaft 21 via a spline pair. For example, the free end of the transmission shaft 21 is provided with an external spline, and the first end of the adapter shaft 4 is provided with a first connecting hole, which is adapted to the free end of the transmission shaft 21, and an internal spline 41 is provided in the first connecting hole. By matching the external spline at the free end of the transmission shaft 21 with the internal spline 41 in the first connecting hole, the transmission connection between the adapter shaft 4 and the transmission shaft 21 is achieved. Since the first end of the adapter shaft 4 is provided with the internal spline 41, the outer diameter of the first end of the adapter shaft 4 is larger than the outer diameter of the transmission shaft 21, and the shaft hole 31 is designed to be stepped, so that the diameter of the portion of the shaft hole 31 for mounting the adapter shaft 4 is larger than the diameter of the portion for mounting the transmission shaft 21, which can achieve a limiting effect on the angular contact bearing 5 and prevent the angular contact bearing 5 from moving axially toward the direction close to the drive device 2. During installation, the pair of angular contact bearings 5 ​​are sleeved onto the outside of the first end of the adapter shaft 4, with the outer rings of the angular contact bearings 5 ​​contacting the inner wall of the shaft hole 31. Stoppers 51, such as retaining rings, are provided at each end of the pair of angular contact bearings 5 ​​to axially position the ends of the pair of angular contact bearings 5 ​​and prevent them from moving within the shaft hole 31.

[0038] Furthermore, a speed reducer 6 is provided between the drum 1 and the drive unit 2. The output shaft of the speed reducer 6 is connected to the central axis of the drum 1, and the input shaft of the speed reducer 6 is connected to the second end of the adapter shaft 4 via a spline pair. This arrangement, by adding the speed reducer 6 between the drive unit 2 and the drum 1 for power transmission, allows for adjustment of the speed of the drum 1 to match the speed of the drum 1 according to different operating conditions, thereby adjusting the winding speed of the wire rope on the drum 1.

[0039] With such an arrangement, the present application connects the reducer 6 to the drive device 2 by using an adapter flange 3, ensuring that the transmission shaft 21, the adapter shaft 4 and the input shaft of the reducer 6 are always arranged coaxially with the central axis of the reel 1, and there will be no problem of installation angle deviation. By using the adapter shaft 4 to transmit the power of the transmission shaft 21 to the reel 1, the problem that the transmission shaft 21 and the input shaft of the reducer 6 cannot match due to different sizes is effectively solved. By replacing the adapter shafts 4 of different sizes, the adapter shaft 4 can adapt to the connection between the transmission shafts 21 of different sizes and the input shaft of the reducer 6, so that the transmission shaft 21 can adapt to the input shafts of reducers 6 of different sizes, thereby improving the versatility of the drive device 2.

[0040] The lifting mechanism provided in the embodiment of the present application is used to be installed at the tail of the turntable of the crane, wherein the turntable is the key connecting component of the crane, and the boom, the upper vehicle control room, the lifting mechanism, the slewing mechanism, and the counterweight are all directly connected to it. The motor is located on the frame at the tail of the turntable. When the drum 1 and the hoisting box 11 are rotationally connected, the reducer 6 is connected to the motor through the adapter flange 3. The drive shaft 21 (power output shaft) of the motor drives the reducer 6 to rotate through the adapter shaft 4, and the reducer 6 then drives the drum 1 to perform hoisting.

[0041] In some embodiments, the reducer 6 can be installed at the end of the winch box 11, and the output shaft of the reducer 6 is connected to the central axis of the drum 1, and the input shaft of the reducer 6 is connected to the second end of the adapter shaft 4. As shown in Figures 2 and 3, the second end of the adapter shaft 4 is located outside the adapter flange 3, and the second end of the adapter shaft 4 is provided with an external spline. The input shaft of the reducer 6 is provided with a second connecting hole, and an internal spline 41 is provided in the second connecting hole. By matching the external spline at the second end of the adapter shaft 4 with the internal spline 41 in the second connecting hole, the transmission connection between the adapter shaft 4 and the input shaft of the reducer 6 is realized.

[0042] Of course, an internal spline 41 can also be provided at the second end of the adapter shaft 4. By providing a second connecting hole at the second end of the adapter shaft 4, an internal spline 41 is provided in the second connecting hole, and an external spline is provided on the input shaft of the reducer 6, and then the internal spline 41 at the second end of the adapter shaft 4 is matched with the external spline of the input shaft of the reducer 6, the transmission connection between the adapter shaft 4 and the input shaft of the reducer 6 is realized.

[0043] It should be noted that the structure of the adapter shaft 4 can be specifically designed according to the structure of the shafts to be connected at both ends. The two ends can be respectively provided with internal splines 41 and external splines, or one end can be external splines and the other end can be internal splines 41.

[0044] In this embodiment, the motor is mounted on the frame at the tail of the turntable through a fixing plate 7. As shown in FIG1 , the fixing plate 7 may be circular, with a plurality of spiral connection holes arranged along the circumference, and a through hole in the middle for the transmission shaft 21 to pass through. The size of the fixing plate 7 is adapted to the end size of the motor, so that the motor is fixed to the fixing plate 7 by bolts.

[0045] In this embodiment, the end of the adapter flange 3 facing away from the drive device 2 is connected to the reducer 6, and a first sealing structure is provided at the connection between the adapter flange 3 and the reducer 6, and a second sealing structure is provided at the connection between the motor and the fixed plate 7, which are used to ensure the reliability of the connection between the two and the sealing of the oil, and prevent the lubricating oil from leaking between the motor and the fixed plate 7. One end of the adapter flange 3 is sealed with the fixed plate 7, and a third sealing structure is provided at the connection between the adapter flange 3 and the fixed plate 7; the first sealing structure, the second sealing structure and the third sealing structure can all be O-rings 9.

[0046] In this way, by arranging sealing structures at the connection points at both ends of the adapter flange 3 and between the fixed plate 7 and the motor, the transmission structure between the drive shaft 21 and the input shaft of the reducer 6 is sealed. Compared with the traditional technology in which an oil seal is arranged between the bearing and the shaft hole 31, and the oil seal is tightly fitted with the adapter shaft 4 and the adapter flange 3, which causes the drive shaft 21 to be very easily damaged when rotating at high speed, resulting in lubricating oil leakage, the present application realizes a sealed connection by arranging O-rings 9 at the connection points at both ends of the adapter flange 3, so that the sealing of the lubricating oil is more reliable and not easy to be damaged.

[0047] Furthermore, in order to improve the connection effect of the adapter flange 3, a positioning structure 8 is provided on the end face of the fixing plate 7. When installing the adapter flange 3, the end of the adapter flange 3 is connected to the fixing plate 7 through the positioning structure 8, which can achieve rapid installation of the adapter flange 3 and the fixing plate 7, and ensure the coaxiality of the transmission shaft 21 and the adapter shaft 4 after connection. As shown in Figure 2, the positioning structure 8 can be an annular protrusion. Correspondingly, as shown in Figure 3, an annular recessed groove 10 is provided at the end of the adapter flange 3 facing the fixing plate 7. The annular recessed groove 10 is adapted to be connected with the annular protrusion. During assembly, the annular recessed groove 10 at the end of the adapter flange 3 is plugged into the annular protrusion of the fixing plate 7 to achieve rapid positioning connection between the fixing plate 7 and the adapter flange 3. Thereafter, the fixing plate 7 and the adapter flange 3 are connected by bolts.

[0048] In some embodiments, the positioning structure 8 can also be an annular groove. Correspondingly, an annular protrusion is provided at one end of the adapter flange 3 facing the fixed plate 7, and the annular groove is adapted to be connected with the annular protrusion. During assembly, the annular protrusion at the end of the adapter flange 3 is plugged into the annular groove of the fixed plate 7 to achieve a quick positioning connection between the fixed plate 7 and the adapter flange 3, and then the fixed plate 7 and the adapter flange 3 are connected by bolts.

[0049] With such an arrangement, the connection between the fixing plate 7 and the adapter flange 3 can be quickly completed by adopting a concave-convex matching method, and after the connection, the annular groove or annular sink 10 can limit the radial movement of the annular protrusion. That is to say, after the fixing plate 7 and the adapter flange 3 are connected, the two constrain each other, which can prevent the fixing plate 7 and the adapter flange 3 from radial relative movement, thereby ensuring the coaxiality between the transmission shaft 21 and the adapter shaft 4, and avoiding radial load on the bearing.

[0050] In this embodiment, when the positioning structure 8 is provided based on the fixing plate 7, the structure of the adapter flange 3 corresponding to one end of the reducer 6 can be designed according to the connection end of the reducer 6; that is, a concave-convex fitting positioning connection method can also be adopted between the reducer 6 and the adapter flange 3. As shown in Figure 1, the reducer 6 is provided with a connecting groove on the end facing the adapter flange 3, and a connecting protrusion is provided on the end of the adapter flange 3. Therefore, during installation, the end of the adapter flange 3 is inserted into the end of the reducer 6 to achieve a concave-convex fit, thereby realizing a quick positioning connection between the reducer 6 and the adapter flange 3, and then the reducer 6 and the adapter flange 3 are connected by bolts.

[0051] In other embodiments, one end of the reducer 6 facing the adapter flange 3 is set as a convex structure, and the end of the adapter flange 3 is set with a connecting recess, so that during installation, the end of the adapter flange 3 is inserted into the end of the reducer 6 to achieve a concave-convex fit, thereby realizing a quick positioning connection between the reducer 6 and the adapter flange 3, and then the reducer 6 is connected to the adapter flange 3 by bolts.

[0052] With such a setting, the connection between the reducer 6 and the adapter flange 3 can be quickly completed by adopting a concave-convex matching method, and the groove can limit the radial movement of the protrusion after the connection. That is to say, after the reducer 6 and the adapter flange 3 are connected, the two constrain each other, which can prevent radial relative movement between the reducer 6 and the adapter flange 3, thereby ensuring the coaxiality between the adapter shaft 4 and the input shaft of the reducer 6, and also ensuring the coaxiality of the transmission shaft 21, the adapter shaft 4, the input shaft of the reducer 6, the output shaft of the reducer 6 and the center axis of the reel 1, which is beneficial to the stability of the operation of the entire structure.

[0053] An embodiment of the present application also provides an operating machine, comprising the above-mentioned lifting mechanism.

[0054] Since the above-mentioned lifting mechanism is adopted, the working machine has all the advantages of the lifting mechanism.

[0055] In this embodiment, the operating machine can be a crane. The lifting mechanism is used to be installed on the frame at the tail end of the turntable of the crane. The turntable is the key connecting component of the crane. The boom, the upper control room, the lifting mechanism, the slewing mechanism, and the counterweight are all directly connected to it. The lifting mechanism is driven by an electric motor instead of a traditional hydraulic motor to avoid the problems of high noise and low efficiency. The motor is connected to the frame through a fixed plate 7, and the hoisting box 11 is fixed in the frame. The drum 1 and the hoisting box 11 are rotatably connected. A reducer 6 is provided at the end of the hoisting box 11. The reducer 6 is connected to the fixed plate 7 through an adapter flange 3. The transmission shaft 21 of the motor The reducer 6 is driven to rotate through the adapter shaft 4, and the reducer 6 then drives the drum 1 to rotate to perform the hoisting and lifting work; by using the adapter shaft 4 to connect the drive shaft 21 with the input shaft of the reducer 6, the problem of poor universality of the drive shaft of the motor and the input shaft of the reducer 6 in traditional technology is solved. By replacing the adapter shafts 4 of different sizes, the two ends of the adapter shaft 4 can match the drive shafts 21 and the input shafts of the reducer 6 of different sizes, so that the drive shaft 21 drives the reducer 6 through the adapter shaft 4 and then drives the drum 1 to rotate, realizing a motor that can adapt to a variety of different models of reducers 6 by replacing the adapter shaft 4.

[0056] The adapter shaft 4 and the shaft hole 31 are connected by a pair of angular contact bearings 5. Compared with a single bearing, the adapter shaft 4 can be subjected to both axial and radial forces, thereby improving the stability of the connection between the adapter shaft 4 and the adapter flange 3.

[0057] By setting up sealing structures at the connection points at both ends of the adapter flange 3 and between the fixed plate 7 and the motor, compared with the traditional technology in which an oil seal is set between the bearing and the shaft hole 31, and the oil seal is tightly fitted with the adapter shaft 4 and the adapter flange 3, which causes the transmission shaft 21 to be very easily damaged when rotating at high speed, resulting in lubricating oil leakage, the present application achieves a sealed connection by setting an O-ring 9 at the connection points at both ends of the adapter flange 3, so that the sealing of the lubricating oil is more reliable and not easy to be damaged.

[0058] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0059] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "first aspect embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A lifting mechanism, comprising: A reel (1) is rotatably mounted in a hoist box (11); The driving device (2) is provided with a transmission shaft (21), and the transmission shaft (21) is in driving connection with the reel (1); A transfer flange (3) is arranged between the hoist box (11) and the drive device (2) for connecting the two, and the transfer flange (3) is provided with an axial hole (31); A transfer shaft (4) is arranged between the transmission shaft (21) and the reel (1); the transfer shaft (4) is rotatably arranged in the shaft hole (31); a first end of the transfer shaft (4) is connected to the transmission shaft (21); and a second end of the transfer shaft (4) is connected to the central axis of the reel (1).

2. The lifting mechanism according to claim 1, wherein: The shaft hole (31) is arranged at the center of the adapter flange (3), a pair of angular contact bearings (5) are arranged in the shaft hole (31), and the pair of angular contact bearings (5) are sleeved on the adapter shaft (4).

3. The lifting mechanism according to claim 2, wherein: Limiting members (51) are provided in the shaft hole (31) at both ends corresponding to a pair of angular contact bearings (5).

4. The lifting mechanism according to claim 1, wherein: The transmission shaft (21) is inserted into the shaft hole (31), and the first end of the adapter shaft (4) is connected to the transmission shaft (21) via a spline pair.

5. The lifting mechanism according to claim 1, wherein: A reducer (6) is provided between the drum (1) and the driving device (2); the reducer (6) is provided at the end of the hoisting box (11), and the output shaft of the reducer (6) is connected to the central axis of the drum (1); the input shaft of the reducer (6) is connected to the second end of the adapter shaft (4) via a spline pair.

6. The lifting mechanism according to claim 5, wherein: The end of the adapter flange (3) facing away from the drive device (2) is connected to the reducer (6), and a first sealing structure is provided at the connection between the adapter flange (3) and the reducer (6).

7. The lifting mechanism according to claim 1, wherein: It also comprises a fixing plate (7), the driving device (2) is connected to the fixing plate (7), and one end of the adapter flange (3) is sealedly connected to the fixing plate (7).

8. The lifting mechanism according to claim 7, wherein: A second sealing structure is provided between the driving device (2) and the fixing plate (7), and a third sealing structure is provided at the connection between the adapter flange (3) and the fixing plate (7).

9. The lifting mechanism according to claim 7, wherein: The driving device (2) comprises a motor, an end of which is connected to the fixing plate (7), and the motor drives the transmission shaft (21) to rotate.

10. An operating machine, comprising the lifting mechanism according to any one of claims 1 to 9.

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