CN117228564A - Lifting mechanism and operation machine - Google Patents

Abstract

The invention relates to the technical field of lifting equipment and provides a lifting mechanism and working machinery, including a reel, a driving device, an adapter flange and an adapter shaft. The reel is rotatably installed in a hoisting box, and the driving device is provided with There is a transmission shaft, which is drivingly connected to the drum. The adapter flange is arranged between the hoisting box and the driving device. The adapter flange is provided with a shaft hole. The adapter shaft is arranged between the transmission shaft and the drum. The adapter shaft is rotatably arranged in the shaft 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; in the present invention, an adapter flange is used to connect the hoisting box and The drive device is connected to ensure that the drive shaft is always coaxially arranged with the central axis of the drum. By using an adapter shaft to transmit the power of the drive shaft to the drum, it effectively solves the problem that the drive shaft and the central axis of the drum cannot match due to different sizes. problem, improving the versatility of the drive device.

Description

Lifting mechanism and operating machinery

Technical field

The present invention relates to the technical field of lifting equipment, and in particular, to a lifting mechanism and a working machine.

Background technique

The hoisting mechanism of traditional operating machinery such as cranes is composed of hydraulic motors, reducers, drums, wire ropes, etc., and the hoisting structure is mainly driven by the hydraulic motor for lifting and lowering.

In the existing technology, the driving shaft of the hydraulic motor is usually connected to the connecting shaft of the reducer and the reel in sequence. The connection process needs to strictly match the size of the driving shaft and the connecting shaft of the reducer. Generally, one type of drive shaft corresponds to one type. It is difficult to match one type of reducer with one type of reducer, and because the connecting shaft between the drive shaft and the coupling is not fixed at the connection point and is in a floating state, fitting gaps and gaps are prone to occur during the rotation of the system. The different axes of the transmission shafts at both ends cause beating, 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.

Contents of the invention

The present invention provides a hoisting mechanism and a working machine to solve the problem of poor versatility of the drive shaft in the prior art hoisting mechanism, so that the drive shaft can adapt to reels of different sizes.

In a first aspect, the present invention provides a lifting mechanism, including:

Reel, rotatably mounted in the hoisting box;

A driving device is provided with a transmission shaft, and the transmission shaft is drivingly connected to the drum;

An adapter flange is provided between the hoisting box and the driving device for connecting the two, and the adapter flange is provided with a shaft hole;

An adapter shaft is provided between the transmission shaft and the drum, the adapter shaft is rotatably provided in the shaft hole, and the first end of the adapter shaft is connected to the transmission shaft, The second end of the adapter shaft is connected to the central axis of the drum.

According to the lifting mechanism provided by the present invention, the shaft hole is provided at the center of the adapter flange, a pair of angular contact bearings is provided in the shaft hole, and a pair of angular contact bearings are sleeved on the adapter flange. on axis.

According to the lifting mechanism provided by the present invention, limiters are provided in the shaft hole corresponding to both ends of the pair of angular contact bearings.

According to the lifting mechanism provided by the present invention, the transmission shaft is inserted into the shaft hole, and the first end of the adapter shaft is connected to the transmission shaft through a spline pair.

According to the hoisting mechanism provided by the present invention, a reducer is provided between the drum and the driving device, the reducer is provided at the end of the hoisting box, and the output shaft of the reducer is connected to the The central axis of the drum is connected, and the input shaft of the reducer is connected to the second end of the adapter shaft through a spline pair.

According to the lifting mechanism provided by the present invention, one 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.

The lifting mechanism provided by the present invention further includes a fixed plate, the driving device is connected to the fixed plate, and one end of the adapter flange is sealingly connected to the fixed plate.

According to the lifting mechanism provided by the present invention, 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.

According to the lifting mechanism provided by the present invention, 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.

In a second aspect, the present invention also provides a working machine, including a lifting mechanism as described in the first aspect.

The hoisting mechanism provided by the invention includes: a drum, a driving device, an adapter flange and an adapter shaft. The drum is rotatably installed in the hoisting box. The drive device is provided with a transmission shaft, and the transmission shaft is drivingly connected to the drum. ; The adapter flange is arranged between the hoisting box and the driving device to connect the two. The adapter flange is provided with a shaft hole; the adapter shaft is arranged between the transmission shaft and the drum, and the adapter shaft can rotate Ground is installed in the shaft 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 this arrangement, the hoisting box and the driving device are connected by using an adapter flange Connection, the transmission shaft and the adapter shaft are connected in the shaft hole, and the shaft hole provides constraints to prevent the transmission shaft and the adapter shaft from floating, ensuring the stability of the transmission, and ensuring that the transmission shaft is always coaxial with the central axis of the drum The central setting uses an adapter shaft to transmit the power of the drive shaft to the drum, which effectively solves the problem that the drive shaft and the center shaft of the drum cannot match due to different sizes. By replacing the adapter shaft with different sizes, the adapter shaft can adapt to the transmission. The connection between the shaft and the central shaft of the drum of different sizes enables the transmission shaft to adapt to the central shaft of the drum of different sizes, thereby improving the versatility of the drive device.

The present invention also provides a working machine, including the above-mentioned lifting mechanism. The derivation process of the beneficial effects is generally similar to the derivation process of the beneficial effects brought by the above-mentioned lifting mechanism, and will not be described again here.

Description of drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are the drawings of the present invention. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a lifting mechanism provided by an embodiment of the present invention;

Figure 2 is a cross-sectional view of the lifting mechanism provided by the embodiment of the present invention;

Figure 3 is a schematic diagram of the connection structure between the adapter shaft and the adapter flange provided by the embodiment of the present invention.

Reference signs:

1. Reel; 2. Driving device; 21. Drive shaft; 3. Adapter flange; 31. Shaft hole; 4. Adapter shaft; 41. Internal spline; 5. Angular contact bearing; 51. Limiter ; 6. Reducer; 7. Fixed plate; 8. Positioning structure; 9. O-ring; 10. Annular sink; 11. Hoisting box.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

The following describes a lifting mechanism and working machine provided in an embodiment of the present invention with reference to FIGS. 1 to 3 .

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

Among them, the drum 1 is rotatably installed in the hoisting box 11, the driving device 2 is provided with a transmission shaft 21, the transmission shaft 21 is drivingly connected to the drum 1, and the adapter flange 3 is provided between the hoisting box 11 and the driving device 2 for connecting the two, the adapter flange 3 is provided with a shaft hole 31; the adapter shaft 4 is provided between the transmission shaft 21 and the drum 1, and the adapter shaft 4 is rotatably provided in the shaft 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 central axis of the drum 1.

It can be seen from the above solution that the present invention uses the adapter flange 3 to connect the hoisting box 11 and the driving device 2 to ensure that the transmission shaft 21 is always coaxially arranged with the central axis of the drum 1. The adapter shaft 4 is used to connect the transmission shaft 21's power is transmitted to the drum 1, which effectively solves the problem that the transmission shaft 21 and the central axis of the drum 1 cannot match due to different sizes. By replacing the adapter shaft 4, the adapter shaft 4 can adapt to the transmission shaft 21 and drums of different sizes. The connection of the central shaft 1 enables the transmission shaft 21 to adapt to the central shafts of the drum 1 of different sizes, thereby improving the versatility of the driving device 2.

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

The hoisting mechanism provided by the embodiment of the present invention is used to be installed at the tail of the turntable of the crane. The motor is located on the frame of the tail of the turntable. When the drum 1 and the hoisting box 11 are rotationally connected, the transmission shaft 21 (power output) of the motor shaft) drives the drum 1 through the adapter shaft 4 to perform hoisting work.

In this embodiment, a shaft hole 31 is provided in the center of the adapter flange 3 . A pair of angular contact bearings 5 is provided in the shaft hole 31 . The pair of angular contact bearings 5 is sleeved on the adapter shaft 4 . In this arrangement, since the angular contact bearing 5 has good load-bearing capacity and can bear both radial load and axial load, the adapter shaft 4 is rotatably installed in the shaft hole 31 of the adapter flange 3 by using a pair of angular contact bearings 5 within, so that it can bear axial force and radial force at the same time. Compared with a single bearing used, such as a deep groove ball bearing, which can only bear radial force, the stability of the connection between the adapter shaft 4 and the adapter flange 3 is improved. and the use of angular contact bearing 5 also has the advantages of high speed, high precision and convenient installation and adjustment. Since the contact angle between the outer ring and the inner ring of angular contact bearing 5 is designed to be 15° or 25°, it has friction The characteristic of small force increases the rotation speed of the bearing, thereby reducing the power loss of the transmission shaft 21; in addition, due to the high accuracy and repeatable positioning accuracy of the angular contact bearing 5, it is suitable for high-precision mechanical assembly and is used in the adapter shaft 4 With the adapter flange 3, the problem of unstable structural operation can be avoided. By using the separable type, the inner and outer rings of the angular contact bearing 5 can be separated, making it easy to install and adjust.

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 through a spline pair. For example, the free end of the transmission shaft 21 is provided with an external spline, the first end of the adapter shaft 4 is provided with a first connection hole, the first connection hole is adapted to the free end of the transmission shaft 21, and an inner connection hole is provided in the first connection hole. The spline 41 realizes the transmission connection between the adapter shaft 4 and the transmission shaft 21 by matching the external spline at the free end of the transmission shaft 21 with the internal spline 41 in the first connection hole. 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, so the shaft hole 31 is designed in a stepped shape, so that the shaft hole 31 The diameter of the part used to install the adapter shaft 4 is larger than the diameter of the part used to install the transmission shaft 21, which can realize the limiting function of the angular contact bearing 5 and prevent the angular contact bearing 5 from moving axially close to the driving device 2 direction movement. During installation, a pair of angular contact bearings 5 is sleeved on the outside of the first end of the adapter shaft 4 , and the outer rings of the pair of angular contact bearings 5 are in contact with the inner wall of the shaft hole 31 . Limiting members 51 , such as circlip rings, are respectively provided at both ends of the pair of angular contact bearings 5 to axially position the two ends of the pair of angular contact bearings 5 to prevent the angular contact bearings 5 from moving in the shaft holes 31 .

Further, a reducer 6 is provided between the drum 1 and the driving device 2. The output shaft of the reducer 6 is connected to the central axis of the drum 1. The input shaft of the reducer 6 and the second end of the adapter shaft 4 pass through the spline. Key vice connection. With such an arrangement, by adding a reducer 6 between the driving device 2 and the power transmission of the drum 1, it can be used to adjust the rotation speed of the drum 1 to match the rotation speed of the drum 1 according to different working conditions. Realize the winding speed adjustment of the wire rope on drum 1.

With this arrangement, the present invention uses the adapter flange 3 to connect the reducer 6 and the driving device 2, ensuring that the transmission shaft 21, the adapter shaft 4 and the input shaft of the reducer 6 are always coaxially arranged with the central axis of the drum 1 , there will be no problem of installation angle deviation. By using the adapter shaft 4 to transmit the power of the drive shaft 21 to the drum 1, it effectively solves the problem that the drive shaft 21 and the input shaft of the reducer 6 cannot match due to different sizes. Replacing the adapter shaft 4 of different sizes allows the adapter shaft 4 to adapt to the connection between the transmission shaft 21 of different sizes and the input shaft of the reducer 6, so that the transmission shaft 21 can adapt to the input shaft of the reducer 6 of different sizes, thereby improving the driving efficiency. Versatility of device 2.

The hoisting mechanism provided by the embodiment of the present invention is used to be installed at the tail of the turntable of the crane. The turntable is the key connecting component of the crane, and the boom, upper vehicle control room, hoisting mechanism, slewing mechanism, and counterweight are all directly connected with it. Connected, the motor is located on the frame at the end 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 transmission shaft 21 of the motor (power output shaft) The adapter shaft 4 drives the reducer 6 to rotate, and the reducer 6 then drives the drum 1 to perform hoisting work.

In some embodiments, the reducer 6 may be installed 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 , and the input shaft of the reducer 6 is connected to the third end of the adapter shaft 4 The two ends are connected, as shown in Figure 2 and Figure 3. The second end of the adapter shaft 4 is located outside the adapter flange 3. The second end of the adapter shaft 4 is provided with an external spline. The input shaft of the reducer 6 A second connection hole is provided, and an internal spline 41 is provided in the second connection hole. By matching the external spline at the second end of the adapter shaft 4 with the internal spline 41 in the second connection hole, the adapter shaft 4 is connected to the reducer. 6. Transmission connection of the input shaft.

Of course, the second end of the adapter shaft 4 can also be provided with internal splines 41. By providing a second connection hole at the second end of the adapter shaft 4, and providing the internal splines 41 in the second connection hole, the input of the reducer 6 The shaft is provided with external splines, and then the internal splines 41 at the second end of the adapter shaft 4 are matched with the external splines of the input shaft of the reducer 6 to realize the transmission connection between the adapter shaft 4 and the input shaft of the reducer 6 .

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, external splines, or one end has an external spline and the other has an internal spline 41.

In this embodiment, the motor is installed on the frame at the rear of the turntable through the fixed plate 7. As shown in Figure 1, the fixed plate 7 can be circular, with multiple spiral connection holes provided along the circumference, and a transmission shaft 21 is provided in the middle. Through the through holes, the size of the fixing plate 7 is adapted to the size of the end of the motor, so that the motor is fixed on the fixing plate 7 through bolts.

In this embodiment, one end of the adapter flange 3 away from the driving device 2 is connected to the reducer 6. A first sealing structure is provided at the connection between the adapter flange 3 and the reducer 6. A first sealing structure is provided at the connection between the motor and the fixed plate 7. The second sealing structure is used to ensure the reliability of the connection between the two and the sealing performance of the oil, and prevent the lubricating oil from leaking between the motor and the fixed plate 7. One end of the transfer flange 3 is sealed with the fixed plate 7, and the transfer flange 3 is sealed with the fixed plate 7. A third sealing structure is provided at the connection between the connecting flange 3 and the fixed plate 7; the first sealing structure, the second sealing structure and the third sealing structure may all be O-rings 9.

With this arrangement, by arranging sealing structures at the connections at both ends of the adapter flange 3 and between the fixed plate 7 and the motor, the transmission structure between the transmission shaft 21 and the input shaft of the reducer 6 is sealed. Compared with the traditional In the technology, an oil seal is provided between the bearing and the shaft hole 31, and the oil seal is closely matched with the adapter shaft 4 and the adapter flange 3, causing the transmission shaft 21 to be easily damaged when rotating at high speed, resulting in lubricant leakage. Specifically, the present invention achieves a sealed connection by arranging an O-ring seal 9 at the connection between the two ends of the adapter flange 3, making the sealing performance of the lubricating oil more reliable and less likely to be damaged.

Furthermore, in order to improve the connection effect of the adapter flange 3, a positioning structure 8 is provided on the end surface of the fixed plate 7. When the adapter flange 3 is installed, the end of the adapter flange 3 is connected to the fixed plate through the positioning structure 8. The matching connection of the plates 7 enables rapid installation of the adapter flange 3 and the fixed plate 7, and ensures 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 sinking groove 10 is provided at one end of the adapter flange 3 facing the fixed plate 7. The annular sinking groove 10 is connected with the annular protrusion. When assembling, the annular sinking groove 10 at the end of the adapter flange 3 is plugged into the annular protrusion of the fixed plate 7, so that the fixed plate 7 and the adapter flange 3 can be quickly positioned. connection, and then connect the fixing plate 7 and the adapter flange 3 through bolts.

In some embodiments, the positioning structure 8 can also be an annular groove. Correspondingly, an annular protrusion is provided on one end of the adapter flange 3 facing the fixing plate 7. The annular groove is adapted to connect with the annular protrusion. During assembly, , by inserting and mating the annular protrusion at the end of the adapter flange 3 with the annular groove of the fixed plate 7, a quick positioning connection between the fixed plate 7 and the adapter flange 3 can be achieved, and then the fixed plate is bolted 7 is connected to the adapter flange 3.

With this arrangement, the connection between the fixing plate 7 and the adapter flange 3 can be quickly completed by using a concave-convex fit, and after the connection, the annular groove or annular sinking groove 10 can limit the radial movement of the annular protrusion, that is to say , after the fixed plate 7 and the adapter flange 3 are connected, they are mutually constrained, which can prevent the fixed plate 7 and the adapter flange 3 from moving radially relative to each other, thus ensuring the synchronization between the transmission shaft 21 and the adapter shaft 4 axis to avoid radial loads on the bearings.

In this embodiment, when the positioning structure 8 is provided based on the fixed plate 7, the adapter flange 3 corresponds to the structure of one end of the reducer 6 and can be designed according to the connection end of the reducer 6; that is to say, the reducer 6 and The adapter flanges 3 can also adopt a concave-convex matching positioning connection method. As shown in Figure 1, the reducer 6 is provided with a connection groove at one end facing the adapter flange 3, and a connection protrusion is provided at the end of the adapter flange 3, so that during installation, the end of the adapter flange 3 By inserting the end of the reducer 6 into a concave-convex fit, the reducer 6 and the adapter flange 3 can be quickly positioned and connected, and then the reducer 6 and the adapter flange 3 are connected through bolts.

In other embodiments, one end of the reducer 6 facing the adapter flange 3 is provided with a convex structure, and the end of the adapter flange 3 is provided with a connection recess, so that during installation, the adapter flange 3 Insert the end of the reducer 6 into the end of the reducer 6 to achieve a concave-convex fit, so that the reducer 6 and the adapter flange 3 can be quickly positioned and connected, and then the reducer 6 and the adapter flange 3 are connected through bolts.

With this arrangement, the connection between the reducer 6 and the adapter flange 3 can be quickly completed by using a concave-convex fit, and the groove can limit the radial movement of the protrusion after the connection. That is to say, the reducer 6 and the adapter flange 3 can be quickly connected. After the flange 3 is connected, the two restrain each other, which can prevent the 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 ensures 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 central axis of the drum 1, which is beneficial to the stability of the entire structure.

An embodiment of the present invention also provides a working machine, including the above-mentioned lifting mechanism.

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

In this embodiment, the working machine may be a crane, and the lifting mechanism is installed on the frame at the rear of the turntable of the crane. The turntable is the key connecting component of the crane, including the boom, the upper vehicle control room, the lifting mechanism, and the slewing mechanism. , counterweight are directly connected with it. The lifting mechanism is driven by a motor instead of the traditional hydraulic motor to avoid the problem of high noise and low efficiency. The motor is connected to the frame through the fixing plate 7, and the hoisting box 11 is fixed in the frame. The drum 1 and the hoisting box 11 are rotationally connected. The end of the hoisting box 11 is provided with a reducer 6. The reducer 6 is connected to the fixed plate 7 through the adapter flange 3. The transmission shaft 21 of the motor is driven through the adapter shaft 4. The reducer 6 rotates, and the reducer 6 drives the drum 1 to rotate to carry out the hoisting and lifting work; by using the adapter shaft 4 to connect the transmission shaft 21 and the input shaft of the reducer 6, the problem between the drive shaft of the motor and the input shaft of the reducer 6 is solved in the traditional technology. The input shaft of the reducer 6 does not match the problem of poor versatility. By replacing the adapter shaft 4 of different sizes, the two ends of the adapter shaft 4 can match the transmission shaft 21 of different sizes and the input shaft of the reducer 6, so that the transmission shaft 21 The adapter shaft 4 is used to drive the reducer 6 and then the drum 1 to rotate, thereby realizing a motor that can be adapted to various types of reducers 6 by replacing the adapter shaft 4 .

The adapter shaft 4 and the shaft hole 31 are connected through a pair of angular contact bearings 5. Compared with a single bearing, they can receive axial force and radial force at the same time, thereby improving the connection between the adapter shaft 4 and the adapter flange. 3. Connection stability;

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, compared to the traditional technology in which an oil seal is provided between the bearing and the shaft hole 31, and the oil seal is connected to the adapter shaft 4 and the rotating The connecting flanges 3 are closely matched, causing the transmission shaft 21 to be easily damaged when rotating at high speed, leading to lubricating oil leakage. In the present invention, an O-ring seal 9 is provided at the connection between the two ends of the adapter flange 3. The sealed connection makes the lubricating oil seal more reliable and less susceptible to damage.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "horizontal", "upper", "lower", "front", "back", "left" and "right" The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this document. The embodiments and simplified descriptions of the invention do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be construed as limiting the embodiments of the invention. Furthermore, the terms “first”, “second” and “third” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Or integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood in specific situations.

In the description of this specification, reference to the terms "one embodiment," "a first aspect embodiment," "some embodiments," "examples," "specific examples," or "some examples" or the like is meant to be combined with the description. An embodiment or example describes a specific feature, structure, material, or characteristic that is included in at least one embodiment or example of the embodiments of the invention. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be used Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent substitutions are made to some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A lifting mechanism, characterized in that it includes: The drum (1) is rotatably installed in the hoisting box (11); The driving device (2) is provided with a transmission shaft (21), and the transmission shaft (21) is drivingly connected to the drum (1); An adapter flange (3) is provided between the hoisting box (11) and the driving device (2) for connecting the two. The adapter flange (3) is provided with a shaft hole ( 31); The adapter shaft (4) is provided between the transmission shaft (21) and the drum (1). The adapter shaft (4) is rotatably provided in the shaft hole (31), so 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 central axis of the drum (1). 2. The lifting mechanism according to claim 1, characterized in that the shaft hole (31) is provided at the center of the adapter flange (3), and a pair of corners are provided in the shaft hole (31). Contact bearings (5), a pair of angular contact bearings (5) are sleeved on the adapter shaft (4). 3. The lifting mechanism according to claim 2, characterized in that limiters (51) are provided in the shaft hole (31) corresponding to both ends of the pair of angular contact bearings (5). 4. The lifting mechanism according to claim 1, characterized in that the transmission shaft (21) is inserted into the shaft hole (31), and the first end of the adapter shaft (4) is connected to the first end of the adapter shaft (4). The drive shaft (21) is connected through a spline pair. 5. The hoisting mechanism according to claim 1, characterized in that a reducer (6) is provided between the drum (1) and the driving device (2), and the reducer (6) is provided with At the end of the hoisting box (11), 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 The second end of the adapter shaft (4) is connected through a spline pair. 6. The hoisting mechanism according to claim 5, characterized in that one end of the adapter flange (3) facing away from the driving device (2) is connected to the reducer (6), and the adapter flange (3) is connected to the reducer (6). A first sealing structure is provided at the connection between the flange (3) and the reducer (6). 7. The hoisting mechanism according to claim 1, further comprising a fixed plate (7), the driving device (2) is connected to the fixed plate (7), and the adapter flange ( One end of 3) is sealingly connected to the fixing plate (7). 8. The lifting mechanism according to claim 7, characterized in that a second sealing structure is provided between the driving device (2) and the fixed plate (7), and the adapter flange (3) A third sealing structure is provided at the connection point with the fixed plate (7). 9. The lifting mechanism according to claim 7, characterized in that the driving device (2) includes a motor, the end of the motor is connected to the fixed plate (7), and the motor drives the transmission The shaft (21) rotates. 10. A working machine, characterized by comprising a lifting mechanism according to any one of claims 1-9.