Slewing bearing and working machine

Abstract

The utility model provides a slewing bearing and a working machine. The slewing bearing comprises N ferrules which are arranged in sequence, every two ferrules can be connected in a relatively rotating mode through a roller row, N is larger than or equal to 2, the first ferrules are used for being fixedly connected with a supporting carrier, and the Nth ferrules are used for being fixedly connected with a working device. The N-1 gear rings are arranged on the outer sides of the N-1 ferrules in the N ferrules in a one-to-one correspondence mode, and when N is larger than or equal to 3, the N-1 ferrules are continuously arranged; and the (N-1) driving devices are used for driving the (N-1) gear rings to rotate in a one-to-one correspondence manner. According to the scheme of the embodiment of the invention, the working reliability of the slewing bearing can be improved, the production cost of the slewing bearing is reduced, and a worker can conveniently observe the working condition of the slewing bearing.

Description

Technical Field

[0001] The present disclosure relates to the technical field of working machinery, and in particular to a slewing bearing and a working machinery. Background Art

[0002] The slewing bearing is an important transmission element. It is set between parts with relative rotation. It mainly plays the role of reducing friction and bearing axial load, radial load and overturning moment. The performance of the slewing bearing has an important impact on the working reliability of the parts connected to it, so it is also called the joint of the operating machinery. The slewing bearing is widely used in the fields of operating machinery such as excavators, cranes, rotary drilling rigs, pump trucks, coal mining machines, etc.

[0003] How to improve the working reliability of the slewing bearing and reduce its production cost is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] The disclosed embodiments provide a slewing bearing and a working machine to improve the working reliability of the slewing bearing and reduce its production cost.

[0005] According to one aspect of the present disclosure, there is provided a slewing bearing, comprising N rings, N-1 gear rings and N-1 driving devices, wherein: the N rings are arranged in sequence and are connected to each other for relative rotation via roller arrays, wherein N≥2, and among the N rings, the first ring is used for fixed connection with a supporting carrier, and the Nth ring is used for fixed connection with a working device; the N-1 gear rings are arranged one-to-one on the outside of N-1 of the N rings, wherein when N≥3, the N-1 rings are arranged continuously; and the N-1 driving devices are used one-to-one to drive the N-1 gear rings to rotate.

[0006] In some embodiments, N-1 gear rings are disposed one-to-one on the outside of the remaining N-1 rings among the N rings except the 1st ring, and N-1 driving devices are disposed one-to-one on the outer circumference of the remaining N-1 rings among the N rings except the Nth ring; or, N-1 gear rings are disposed one-to-one on the outside of the remaining N-1 rings among the N rings except the Nth ring, and N-1 driving devices are disposed one-to-one on the outer circumference of the remaining N-1 rings among the N rings except the 1st ring.

[0007] In some embodiments, N-1 gear rings are assembled and connected with N-1 ferrules in a one-to-one correspondence.

[0008] In some embodiments, the roller array includes a plurality of cylindrical rollers, wherein isolation blocks are provided between adjacent cylindrical rollers.

[0009] In some embodiments, each of the N rings is provided with an orthogonal first groove surface and a second groove surface for the roller row, and the first groove surfaces and the second groove surfaces of adjacent rings enclose a raceway space of the roller row, wherein the first groove surfaces and the second groove surfaces respectively have an angle with the rolling track surface of the roller row.

[0010] In some embodiments, the axes of adjacent cylindrical rollers are arranged orthogonally.

[0011] In some embodiments, the diameter of the cylindrical roller is equal to the axial length of the cylindrical roller.

[0012] In some embodiments, the first ferrule and the Nth ferrule are respectively in the shape of flanges and have a plurality of mounting holes.

[0013] In some embodiments, the slewing bearing further includes a control device, which is electrically connected to the N-1 drive devices and is configured to control at least one of the N-1 drive devices to drive the corresponding ring gear to rotate based on at least one of a slewing instruction, a tilting instruction, or a leveling instruction.

[0014] According to the above embodiments of the present disclosure, N-1 gear rings are located outside the corresponding ferrules, and are respectively outer gear rings. Compared with the inner gear ring structure design, at least the following beneficial effects can be obtained:

[0015] The contact area between the outer gear ring and the driving device can be designed to be larger, so that during the transmission process, the contact area between the two is easier to maintain constant, making the transmission more reliable and stable, and can minimize stress concentration and fatigue wear;

[0016] The outer gear ring structure is adopted, which is relatively easy to design and process, and is conducive to reducing the production cost of the slewing bearing;

[0017] The arrangement position of the driving device is relatively flexible, for example, it can be fixed on the outer periphery of the ferrule, or fixed on other mounting structures outside the ferrule or on the aforementioned supporting carrier;

[0018] The installation state of the drive device can be flexibly adjusted as needed, making the contact with the gear ring more stable and the power transmission more stable, which is conducive to reducing transmission jitter;

[0019] The external gear ring transmission design allows the staff to observe the operation of the slewing bearing, the wear of the gear ring, and the operation and wear of the drive unit from the outside, so that they can quickly make judgments and responses on inspection, maintenance, or replacement of parts.

[0020] According to one aspect of the present disclosure, a working machine is provided, comprising: a slewing bearing of any of the aforementioned embodiments; a support carrier fixedly connected to the first collar of the slewing bearing; and a working device fixedly connected to the Nth collar of the slewing bearing. Based on the design concept of the aforementioned slewing bearing, the working machine can obtain corresponding beneficial effects.

[0021] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings exemplarily illustrate the embodiments and constitute a part of the specification, and together with the text description of the specification, are used to explain the exemplary implementation of the embodiments. The embodiments shown are for illustrative purposes only and do not limit the scope of the claims. In all drawings, the same reference numerals refer to similar but not necessarily identical elements.

[0023] Figure 1A is a schematic diagram of a slewing bearing in a working posture according to some embodiments of the present disclosure;

[0024] Figure 1B is a schematic diagram of a slewing bearing in another working posture according to some embodiments of the present disclosure;

[0025] Figure 1C is a schematic diagram of a slewing bearing in another working posture according to some embodiments of the present disclosure;

[0026] Figure 1D is a schematic diagram of a slewing bearing in another working posture according to some embodiments of the present disclosure;

[0027] Figure 2 is a schematic cross-sectional view of the first ferrule of the slewing bearing according to some embodiments of the present disclosure;

[0028] Figure 3 is a schematic cross-sectional view of a second ferrule of a slewing bearing according to some embodiments of the present disclosure;

[0029] Figure 4 is a schematic cross-sectional view of the third ferrule of the slewing bearing according to some embodiments of the present disclosure;

[0030] Figure 5 is a schematic cross-sectional view of the fourth ferrule of the slewing bearing according to some embodiments of the present disclosure;

[0031] Figure 6 is a schematic cross-sectional view of the fifth ferrule of the slewing bearing according to some embodiments of the present disclosure;

[0032] Figure 7 According to some embodiments of the present disclosure, the slewing bearing Figure 1A An enlarged schematic diagram of point I;

[0033] Figure 8 According to some embodiments of the present disclosure, the slewing bearing Figure 1A An enlarged schematic diagram of II;

[0034] Fig. 9 According to some embodiments of the present disclosure, the slewing bearing Figure 1A An enlarged schematic diagram of III;

[0035] Fig.10 According to some embodiments of the present disclosure, the slewing bearing Figure 1A An enlarged schematic diagram of IV;

[0036] Fig.11 A schematic flow chart of an assembly method of a slewing bearing according to some embodiments of the present disclosure.

[0037] Reference numerals:

[0038] 100-slewing bearing; 20-ring; 201-first part; 202-second part; 21-first ring;

[0039] 22-the second loop; 23-the third loop; 24-the fourth loop; 25-the fifth loop;

[0040] 30-roller row; 31-cylindrical roller; 300-support carrier; 500-working device; 40-gear ring;

[0041] 50-driving device; 60-control device; 211-first groove surface; 212-second groove surface; P-rolling track surface;

[0042] 203a, 203b-mounting holes; S-axis line; Q-radial reference surface; W1, W2, W3-surface area;

[0043] 800-assembly method; S1, S2-steps. DETAILED DESCRIPTION

[0044] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope of the present disclosure. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0045] In the present disclosure, unless otherwise specified, the use of the terms "first", "second", etc. to describe various elements is not intended to limit the positional relationship, temporal relationship, or importance relationship of these elements, and such terms are only used to distinguish one element from another element. In some examples, the first element and the second element may refer to the same instance of the element, and in some cases, based on the description of the context, they may also refer to different instances.

[0046] The terms used in the description of various examples in this disclosure are only for the purpose of describing specific examples and are not intended to be limiting. Unless the context clearly indicates otherwise, if the number of elements is not specifically limited, the element can be one or more. In addition, the term "and / or" used in this disclosure covers any one of the listed items and all possible combinations.

[0047] Slewing bearings are widely used in the fields of excavators, cranes, rotary drilling rigs, pump trucks, coal mining machines and other working machinery. As an important transmission element, the performance of the slewing bearing has an important impact on the working reliability of the components connected to it. How to improve the working reliability of the slewing bearing and reduce its production cost is a technical problem that needs to be solved urgently by those skilled in the art. Based on this, the embodiments of the present disclosure provide a slewing bearing and a working machinery to improve the working reliability of the slewing bearing and reduce its production cost. The embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings.

[0048] like Figure 1A As shown, some embodiments of the present disclosure provide a slewing bearing 100, which includes N rings 20, N-1 gear rings 40 and N-1 driving devices 50, wherein N≥2 (the embodiment of the figure specifically illustrates the case of N=5).

[0049] Among the N ferrules 20, the first ferrule 21 is used for fixed connection with the support carrier 300, and the Nth ferrule (such as the fifth ferrule 25) is used for fixed connection with the working device 500. Among the N ferrules 20, N-1 gear rings 40 are arranged one by one on the outside of N-1 ferrules 20 (such as the second ferrule 22, the third ferrule 23, the fourth ferrule 24, and the fifth ferrule 25 shown in the figure), wherein, when N≥3, the N-1 ferrules 20 are arranged continuously. The N-1 driving devices 50 are used to drive the N-1 gear rings 40 to rotate one by one.

[0050] The slewing bearing 100 of the embodiment of the present disclosure can be applied to various types of working machinery, and the types of working machinery may include but are not limited to excavators, cranes, rotary drilling rigs, pump trucks, or coal mining machines. The working device 500 can be a working device 500 of various types of working machinery, and can perform a slewing motion with the rotation of the slewing bearing 100. The supporting carrier 300 can be, for example, a foundation, a ship, a fixed chassis of a working machinery, or a vehicle chassis.

[0051] In the embodiment of the present disclosure, the driving device 50 can be designed and positioned accordingly according to the specific location of the gear ring 40. The specific location of the driving device 50 is not limited, for example, it can be fixed on the outer periphery of the ferrule 20, or fixed on other mounting structures outside the ferrule 20, or fixed on the aforementioned support carrier 300, as long as it can drive the gear ring 40 on the corresponding ferrule 20 to rotate, and then drive the corresponding ferrule 20 to rotate.

[0052] In the embodiment of the present disclosure, the specific type and structural form of the driving device 50 are not limited, and may include a power source device such as an electric motor or a motor, and a transmission mechanism connected to the power source device, such as a gear set or a worm gear transmission mechanism.

[0053] According to the above embodiment of the present disclosure, N-1 gear rings 40 are located outside the corresponding ferrule 20, and are respectively outer gear rings. Compared with the inner gear ring design adopted in some related technologies, at least the following beneficial effects can be obtained:

[0054] The contact area between the outer gear ring and the driving device 50 can be designed to be larger, so that during the transmission process, the contact area between the two can be more easily kept constant, making the transmission more reliable and stable, and can minimize stress concentration and fatigue wear;

[0055] The outer gear ring structure is adopted, which is relatively easy to design and process, and is conducive to reducing the production cost of the slewing bearing;

[0056] The arrangement position of the driving device 50 is relatively flexible, for example, it can be fixed on the outer periphery of the ferrule 20, or fixed on other mounting structures outside the ferrule 20 or on the aforementioned support carrier 300;

[0057] The installation state of the driving device 50 can be flexibly adjusted as needed, so that the contact with the gear ring 40 is more stable and the power transmission is more stable, which is conducive to reducing transmission vibration;

[0058] The external gear ring transmission design makes it easy for the staff to observe the operation of the slewing bearing 100, the wear of the gear ring 40, and the operation and wear of the drive device 50 from the outside, so as to quickly make judgments and responses on inspection, maintenance, or replacement of parts.

[0059] In some embodiments of the present disclosure, N-1 gear rings may be provided one-to-one on the remaining N-1 rings except the first ring among the N rings, and N-1 driving devices may be provided one-to-one on the outer circumference of the remaining N-1 rings except the Nth ring among the N rings. Figure 1A As shown, in some embodiments of the present disclosure, four gear rings 40 are disposed one by one on the outside of the second ring 22, the third ring 23, the fourth ring 24, and the fifth ring 25. Four driving devices 50 are disposed one by one on the outside of the first ring 21, the second ring 22, the third ring 23, and the fourth ring 24.

[0060] Since the movement of the transmission end of the drive device is relative to that of the gear ring, in other embodiments of the present disclosure, based on the above-mentioned design concept, N-1 gear rings can also be arranged one-to-one on the remaining N-1 rings except the Nth ring among the N rings, and N-1 drive devices can be arranged one-to-one on the outer circumference of the remaining N-1 rings except the 1st ring among the N rings. Specifically, taking the case of N=5 as an example (these embodiments are not illustrated in the drawings), the drive device and the gear ring can be arranged in the following manner: 4 gear rings are arranged one-to-one on the outer sides of the 1st ring, the 2nd ring, the 3rd ring, and the 4th ring, and 4 drive devices are arranged one-to-one on the outer sides of the 2nd ring, the 3rd ring, the 4th ring, and the 5th ring.

[0061] Each driving device 50 is arranged on the outside of the corresponding ring 20. On the one hand, there is no need to find another installation carrier for the driving device 50. Not only is the overall structure of the slewing bearing 100 more compact, but the transmission distance between the driving device 50 and the ring gear 40 is also shorter, which is beneficial to improving the transmission accuracy. On the other hand, it is also convenient to observe the operation and wear of the driving device 50, and to facilitate the installation, debugging, inspection and maintenance of the driving device 50.

[0062] In some embodiments, N-1 gear rings 40 are assembled and connected with N-1 ferrules 20 in a one-to-one correspondence. The gear rings 40 can be assembled and connected with the corresponding ferrules 20 after being processed separately, which is conducive to improving the processing accuracy of the gear rings. The assembly and connection methods of the two include but are not limited to key connection, interference fit, or fastener connection. In other embodiments of the present disclosure, the gear rings 40 and the corresponding ferrules 20 can also be designed as an integrated structure, formed by precision casting or precision machining processes.

[0063] In some embodiments, Figure 1A As shown, the first ferrule 21 and the Nth ferrule (such as Figure 1AThe fifth ferrule 25) in the slewing bearing 100 is in the shape of a flange and has a plurality of mounting holes. The slewing bearing 100 can be fixedly connected to the support carrier 300 and the working device 500 by fasteners such as bolts, and the assembly uses standard fasteners, which is relatively easy to operate.

[0064] In some embodiments, the slewing bearing 100 further includes a control device 60, which is electrically connected to the N-1 driving devices 50 and is configured to control at least one of the N-1 driving devices 50 to drive the corresponding ring gear 40 to rotate based on at least one of the slewing instructions, the tilting instructions, or the leveling instructions. Thus, the slewing, tilting, and leveling of the slewing bearing 100 can be precisely and automatically controlled.

[0065] In the related art, the leveling angle range of some slewing bearings is about 0° to 8°. The relatively narrow leveling angle range limits the application scenarios of the slewing bearings. As a result, the operating machinery is not sufficient to cope with more complex and changeable actual working conditions.

[0066] Some embodiments of the present disclosure further improve the structure of the slewing bearing based on the design concept of the above embodiments. The specific improved design contents include: among the N rings, the end faces of the ring opening on both sides of each ring are respectively circular, and there is an angle between the end faces of the ring opening on both sides of each ring of at least two rings arranged in succession, and the inner cylinder wall of each ring of at least two rings arranged in succession is in the shape of a non-standard rotating body.

[0067] In the disclosed embodiments, "at least two rings arranged in series" can be understood as that, among the N rings arranged in sequence (the arrangement order is such as the first, second, third, ...), the arrangement order of the at least two rings is continuous. For example, when N = 2, the first ring and the second ring are arranged in series and each of them satisfies the above-mentioned design of "there is an angle between the end faces of the ring openings on both sides and the inner tube wall is in the shape of a non-standard body of revolution"; for another example, when N = 5, the second ring, the third ring and the fourth ring are arranged in series and each of them satisfies the above-mentioned design of "there is an angle between the end faces of the ring openings on both sides and the inner tube wall is in the shape of a non-standard body of revolution".

[0068] refer to Figure 1A , which is a schematic diagram of a slewing bearing 100 in a working posture in some embodiments of the present disclosure. The embodiment of the figure specifically illustrates the situation where N=5, so that the slewing bearing 100 includes 5 rings 20, 4 gear rings 40 and 4 driving devices 50.

[0069] The five rings 20 are respectively a first ring 21, a second ring 22, a third ring 23, a fourth ring 24, and a fifth ring 25. The five rings 20 are arranged in sequence and are connected to each other by roller arrays 30 so as to be relatively rotatable. Among the five rings 20, the first ring 21 is used for fixed connection with the support carrier 300 (the support carrier 300 is shown in a simplified schematic drawing in the figure), the fifth ring 25 is used for fixed connection with the working device 500 (the working device 500 is shown in a simplified schematic drawing in the figure), and the end faces of the ring openings on both sides of each of the second ring 22, the third ring 23, and the fourth ring 24 have an angle between them (that is, they are not parallel), and the inner cylinder wall of each of the second ring 22, the third ring 23, and the fourth ring 24 is in the shape of a non-standard rotating body (two points are assumed at the two ends of an object, and the two points are connected to form a line passing through the object. The object takes this line as the center of rotation. When rotating, each part of it has the same shape when it rotates to a fixed position. This is a standard rotating body). The four gear rings 40 are respectively arranged on the second ring 22 , the third ring 23 , the fourth ring 24 , and the fifth ring 25 . The four driving devices 50 are respectively used to drive the second ring 22 , the third ring 23 , the fourth ring 24 , and the fifth ring 25 to rotate.

[0070] In the embodiment of the present disclosure, the number N of the rings 20 included in the slewing bearing 100 is not limited, for example, it can be 5 as shown in the figure, or it can be 2, 3, 4, 6, or more, and so on.

[0071] Figure 1B , Figure 1C and Figure 1D The following are schematic diagrams of the slewing bearing 100 in some other working postures, which will be described below. The gear ring 40 and the driving device 50 are omitted in these figures. It can be understood that by driving at least one of the N-1 gear rings 40 to rotate, the slewing bearing 100 can also present more working postures. Therefore, the working postures that the slewing bearing 100 of the embodiment of the present disclosure can present are not limited to Figure 1A , Figure 1B , Figure 1C and Figure 1D shown.

[0072] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, it illustrates the cross-sectional structure of each ring 20 (the case where N=5) of the slewing bearing 100 in some embodiments of the present disclosure.

[0073] In the embodiment of the present disclosure, the main structure of the ring 20 may include: a first portion 201 mainly used to form the inner cylinder wall, and a second portion 202 mainly used to form the raceway space of the roller row 30. For any ring 20 among the N rings 20, its ring end face can be understood as the plane where the end edge of the inner cylinder wall of the ring 20 is located. Each ring 20 includes two ring end faces, for example, Figure 3 The A side ring opening end face and the B side ring opening end face of the second ferrule 22 shown in FIG. Figure 4 The C side ring opening end face and the D side ring opening end face of the third ferrule 23 shown in FIG. Figure 3 As shown, for any ring 20 among the N rings 20 , the line connecting the centers of the end faces of the ring opening on both sides can be defined as the axis S of the ring 20 , and the plane orthogonal to the axis S can be defined as the radial reference surface Q of the ring 20 .

[0074] In the embodiment of the present disclosure, at least two ferrules 20 (such as Figure 1A There is an angle between the end faces of the two side rings of each of the second ring 22, the third ring 23, and the fourth ring 24, which can be an acute angle, a right angle, or an obtuse angle, and the inner cylinder wall of each of the at least two rings 20 arranged in succession is in the shape of a non-standard body of revolution, that is, its inner cylinder wall is not designed to be a regular cylindrical shape.

[0075] In some embodiments of the present disclosure, for each of the N ferrules, there is an angle between the end faces of the two side rings, and such embodiments are not shown in the drawings. For example, in some embodiments, the slewing bearing includes two ferrules, and there is an angle between the end faces of the two side rings of any ferrule. Through the relative rotation of the two ferrules, the slewing bearing can achieve rotation, tilting, adjustment and other actions.

[0076] In some embodiments of the present disclosure, when N≥3, in addition to the at least two rings having an angle between the end faces of the ring openings on both sides, the slewing support may also include such a ring, whose end faces of the ring openings on both sides are parallel, such a ring is, for example, Figure 1A The first ferrule 21 or the fifth ferrule 25 shown in the figure may be 1 or 2. In some embodiments, when N≥4, the first ferrule and the Nth ferrule may be designed in the shape of flanges and have multiple mounting holes. The slewing bearings of these embodiments may also realize actions such as slewing, tilting, and leveling.

[0077] In the disclosed embodiment, the rotation of the slewing bearing 100 can be understood as the rotation of the Nth ring relative to the first ring 21 (or relative to the support carrier 300) in any working posture of the slewing bearing 100. Figure 1B and Figure 1CAs shown, the inclination of the slewing bearing 100 can be understood as the inclination of the axial direction (i.e., the axial direction) of the Nth ring relative to the axial direction of the first ring 21. The inclination angle can be defined as the inclination angle of the slewing bearing 100. Figure 1B The inclination angle 2θ shown in 0 , Figure 1C The inclination angle 4θ shown in 0 , Figure 1A The working posture of the slewing bearing 100 shown in the figure can be understood as a situation where the inclination angle is 0°. Leveling the slewing bearing 100 can be understood as accurately adjusting the inclination angle of the slewing bearing 100 to within the allowable error range, for example, Figure 1B Taking the working posture of the slewing bearing 100 as an example, the target inclination angle 2θ of the slewing bearing 100 is 0 = 60°, then “leveling” can be done by changing the inclination angle 2θ 0 Adjust within the error range of 60°±2°.

[0078] The following references Figure 1A , Figure 1B and Figure 1C As shown, taking N=5 as an example, the working principle of the slewing bearing 100 of the embodiment of the present disclosure is further described in detail. When N is other values, the working principle is similar and will not be described in detail here.

[0079] According to the slewing bearing 100 of the embodiment of the present disclosure, the end faces of the ring openings of any one of the second ring 22, the third ring 23, and the fourth ring 24 are designed to have an angle between them, so that the rotation of any one of the third ring 23 and the fourth ring 24 can cause the fifth ring 25 to change its inclination angle relative to the first ring 21 (or relative to the support carrier 300). Therefore, the fifth ring can not only rotate relative to the first ring 21, but also adjust or fine-tune its inclination angle relative to the first ring 21 based on the rotation of any one of the third ring 23 and the fourth ring 24. Furthermore, the slewing bearing 100 can not only achieve a larger inclination angle of itself, but also achieve actions such as rotation, inclination and adjustment on the support carrier 300 with a larger inclination angle.

[0080] Therefore, the design of the slewing bearing 100 in the embodiment of the present disclosure can improve the adaptability of the slewing bearing 100 to the working environment, so that it can be used in more application scenarios, including but not limited to scenarios where the leveling accuracy of the slewing bearing 100 is required to be high, scenarios where the slewing bearing 100 needs to work at a certain tilt angle, scenarios where the working device 500 needs to work at a limited height, scenarios where the working device 500 needs to work in a bent position, scenarios where the working device 500 needs to avoid obstacles, or scenarios where the working machine needs to work on a slope, etc.

[0081] In these embodiments, N-1 gear rings 40 are arranged on the outside of the corresponding ring 20, that is, the N-1 gear rings 40 are outer gear rings. Compared with the internal gear ring structure design, these embodiments can at least obtain the beneficial effects as described above, which will not be repeated here.

[0082] In some embodiments of the present disclosure, the design of the slewing bearing 100 needs to meet the following requirements:

[0083] The end faces of both sides of the ring opening of each of the N rings 20 are circular, so that the adjacent rings 20 can realize relative rotation through the roller array 30, so that the slewing bearing 100 can realize the slewing action;

[0084] The end faces of the ring openings of some of the N rings 20 (such as the second ring 22, the third ring 23, and the fourth ring 24) are designed to have angles, so that the slewing bearing 100 can achieve tilting and leveling actions as described above.

[0085] In some embodiments, taking the slewing bearing 100 with N=5 as an example (for the case where N is other values, the design principle is similar and will not be described in detail here), it can be specifically designed with reference to the following scheme:

[0086] For example, for any one of the second ring 22, the third ring 23, or the fourth ring 24, at least one side of the ring end face satisfies the functional relationship: y=x*cosθ, and x=d; wherein x is the length of the major axis of the ellipse obtained by projecting the ring end face onto the radial reference plane Q, y is the length of the minor axis of the ellipse obtained by projecting the ring end face onto the radial reference plane Q, θ is the angle between the ring end face and the radial reference plane Q, d is the diameter of the ring end face (the ring end face is circular), wherein 0°<θ<90°.

[0087] For any one of the second, third, or fourth ferrules 20, when the end faces of the ring openings on both sides satisfy the above functional relationship, the θ values ​​designed for the end faces of the ring openings on both sides can be the same or different. In addition, for any two of the second, third, or fourth ferrules 20, the θ values ​​designed for them can be the same or different.

[0088] Based on the above design, the slewing bearing 100 can not only achieve a relatively large tilt angle itself, but also achieve actions such as rotation, tilting and adjustment on the support carrier 300 with a relatively large tilt angle.

[0089] The following further describes some embodiments of the present disclosure in detail by taking the slewing bearing 100 including five rings 20 as an example. Each ring 20 can be designed with reference to the following scheme:

[0090] like Figure 2 As shown, the first ferrule 21 is in the shape of a flange, has a plurality of mounting holes 203a, and the end faces of the ring openings on both sides are parallel. The first ferrule 21 can be fixedly mounted on the support carrier 300 by fasteners such as bolts. The plurality of mounting holes 203a can be evenly distributed in the circumferential direction of the first ferrule 21.

[0091] like Figure 3 As shown, the angle between the ring end face of the second ring 22 close to the first ring 21 (hereinafter referred to as the A-side ring end face) and the radial reference surface Q of the second ring 22 is 0°, that is, they are parallel, and the ring end face of the second ring 22 close to the third ring 23 (hereinafter referred to as the B-side ring end face) satisfies the above functional relationship. Figure 3 In the figure, A1 and B1 are the observation directions along the axis S, and B2 is the observation direction perpendicular to the end face of the ring opening on the B side.

[0092] Specifically, the end face of the ring opening on the B side satisfies the functional relationship: y 1 =x 1 *cosθ 1 , and x 1 =d 2 , where x 1 y is the major axis length of the ellipse obtained by projecting the end face of the ring opening on the B side to the radial reference surface Q, 1 θ is the minor axis length of the ellipse obtained by projecting the end face of the ring opening on the B side to the radial reference surface Q, 1 is the angle between the end face of the ring opening on the B side and the radial reference surface Q, d 1 is the diameter of the end face of the ring opening on side A, d 2 The diameter of the end face of the ring opening on the B side, 0°<θ 1 <90°.

[0093] like Figure 4 As shown, the included angle between the two side ring end faces of the third ring 23 (hereinafter referred to as the C side ring end face and the D side ring end face) is 2θ 2 , and the end faces of both sides of the ring opening of the third ring 23 satisfy the above functional relationship. Figure 4 In the figure, C1 direction and D1 direction are the observation directions along the axis S, C2 direction is the observation direction perpendicular to the end face of the C-side ring opening, and D2 direction is the observation direction perpendicular to the end face of the D-side ring opening.

[0094] Specifically, the end face of the C side ring satisfies the functional relationship: y 2 =x 2 *cosθ 2 , and x 2 =d 3 =d 2 , where x 2y is the major axis length of the ellipse obtained by projecting the end face of the ring opening on the C side to the radial reference surface Q, 2 θ is the minor axis length of the ellipse obtained by projecting the end face of the C-side ring onto the radial reference surface Q, 2 is the angle between the end face of the C-side ring and the radial reference surface Q, d 3 is the diameter of the C-side ring end face, 0°<θ 2 <90°. The end face of the D side ring satisfies the functional relationship: y 3 =x 3 *cosθ 2 , and x 3 =d 4 =d 3 , where x 3 y is the major axis length of the ellipse obtained by projecting the end face of the ring opening on the D side to the radial reference surface Q, 3 The length of the minor axis of the ellipse obtained by projecting the end face of the ring opening on the D side to the radial reference surface Q, θ 2 is the angle between the end face of the ring opening on the D side and the radial reference surface Q, d 4 is the diameter of the end face of the bezel on the D side. That is, in this embodiment, the structures of the end face of the bezel on the C side and the end face of the bezel on the D side are radially symmetrical.

[0095] like Figure 5 As shown, the angle between the ring end face of the fourth ring 24 close to the fifth ring 25 (hereinafter referred to as the F side ring end face) and the radial reference surface Q of the fourth ring 24 is 0°, that is, they are parallel, and the ring end face of the fourth ring 24 close to the third ring 23 (hereinafter referred to as the E side ring end face) satisfies the above functional relationship. Figure 5 In the figure, E1 and F1 directions are the observation directions along the axis S, and E2 direction is the observation direction perpendicular to the end face of the ring opening on the E side.

[0096] Specifically, the end face of the E side ring satisfies the functional relationship: y 4 =x 4 *cosθ 3 , and x 4 =d 5 =d 4 , where x 4 y is the length of the major axis of the ellipse obtained by projecting the end face of the ring opening on the E side to the radial reference surface Q, 4 θ is the minor axis length of the ellipse obtained by projecting the end face of the E side ring onto the radial reference surface Q, 3 is the angle between the end face of the E side ring and the radial reference surface Q, d 5 is the diameter of the end face of the E side ring, d 6 The diameter of the end face of the F side ring, 0°<θ 3 <90°.

[0097] like Figure 6As shown, the fifth ferrule 25 is in the shape of a flange, which has a plurality of mounting holes 203b, and the end faces of the ring openings on both sides are parallel. The fifth ferrule 25 can be fixedly connected to the working device 500 of the operating machine by fasteners such as bolts.

[0098] According to the previous description, the above θ 1 ,θ 2 ,θ 3 The values ​​of can be the same or different. In the embodiment of the present disclosure, for the above θ 1 ,θ 2 ,θ 3 There is no specific requirement for the specific value of . In some embodiments, θ 1 =θ 2 =θ 3 =θ 0 ,θ 0 The value can be, for example, 15°, 30°, 45°, 60° or 75°, etc. 1 =θ 2 =θ 3 =θ 0 This not only makes the calculation of the inclination adjustment of the slewing bearing 100 easier and improves the efficiency of the calculation, but also makes the design and processing of the second ring 22 to the Nth ring easier.

[0099] In some embodiments, the design of the slewing bearing 100 satisfies θ 1 =θ 2 =θ 3 =θ 0 .like Figure 1A As shown, by driving the fifth ferrule 25 to rotate, the slewing bearing 100 can be rotated, and the inclination angle of this working posture is 0°. By driving at least one of the third ferrule 23 and the fourth ferrule 24 to rotate, the inclination angle of the slewing bearing 100 can be adjusted or leveled to 0° within the allowable error range.

[0100] like Figure 1B As shown, when θ 1 =θ 2 =θ 3 =θ 0 By driving at least one of the third ring 23 and the fourth ring 24 to rotate, the inclination angle of the slewing bearing 100 can be adjusted or leveled to 2θ within the allowable error range. 0 .like Figure 1B As shown, the slewing bearing 100 can be installed on a horizontally placed support carrier 300 and slew in this tilted state. In some embodiments, the slewing bearing 100 can also be installed at an angle of 2θ relative to the horizontal plane. 0In some other embodiments, the slewing bearing 100 can also be installed on a support carrier 300 with other inclination angles relative to the horizontal plane (this working scene is not shown in the figure), so as to rotate in other inclined states.

[0101] like Figure 1C As shown, when θ 1 =θ 2 =θ 3 =θ 0 By driving at least one of the third ring 23 and the fourth ring 24 to rotate, the inclination angle of the slewing bearing 100 can be adjusted or leveled to 4θ within the allowable error range. 0 .like Figure 1C As shown, the slewing bearing 100 can be mounted on the horizontal support carrier 300 and slew in this tilted state. Figure 1D As shown, in some embodiments, the slewing bearing 100 can also be installed at an angle of 4θ relative to the horizontal plane. 0 In other embodiments, the slewing bearing 100 can also be installed on a support carrier 300 with other inclination angles relative to the horizontal plane (this working scene is not shown in the drawings), so as to rotate in other inclined states.

[0102] It should be noted that, in the embodiment of the present disclosure, according to θ 1 ,θ 2 ,θ 3 The specific value of is different, and the inclination angle that the slewing bearing 100 can achieve may be any value within the range of greater than or equal to 0° and less than 360°. When used in a working machine, the working device 500 may be in any inclination state within the range of greater than or equal to 0° and less than 360° relative to the supporting carrier, for example, it may be located above or below the supporting carrier, may be orthogonal to or flush with the supporting carrier, and so on.

[0103] It can be seen that in the embodiment of the present disclosure, the slewing bearing 100 can not only achieve a relatively large tilt angle itself, but also can achieve actions such as rotation, tilting and adjustment on the support carrier 300 with a relatively large tilt angle, so that it can be suitable for more application scenarios.

[0104] In the embodiment of the present disclosure, the roller row 30 includes a plurality of rollers, which may be, for example, ball rollers, needle rollers, cylindrical rollers, tapered rollers, spiral rollers, truncated cone rollers, or asymmetric spherical rollers, etc., and the present disclosure does not make any specific limitation on this.

[0105] like Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, it is a slewing bearing 100 of some embodiments of the present disclosure. Figure 1A , wherein the gear ring 40 is only Figure 7 Indicated in Figure 8 , Fig. 9 and Fig.10 Referring to the drawings, in some embodiments of the present disclosure, the roller array 30 may include a plurality of cylindrical rollers 31 , wherein an isolation block (not shown in the drawings) is provided between adjacent cylindrical rollers 31 .

[0106] The cylindrical roller 31 reduces the rotational friction through rolling friction, thereby achieving the effect of load bearing and reducing resistance. Since the cylindrical roller 31 is in line contact with the raceway wall, it has the characteristics of strong load bearing capacity, stable and reliable operation, long service life, and can effectively reduce the friction coefficient and resistance. The isolation block is arranged between adjacent cylindrical rollers 31, which can keep the spacing between the cylindrical rollers 31 stable, prevent the cylindrical rollers 31 from tilting, and avoid the cylindrical rollers 31 from rubbing against each other, thereby effectively preventing the increase of rotational torque.

[0107] like Figure 7 As shown, in some embodiments of the present disclosure, each ring 20 is provided with a first groove surface 211 and a second groove surface 212 ( Figure 8 , Fig. 9 , Fig.10 The structure at the position shown can be similarly designed), the first groove surface 211 and the second groove surface 212 of two adjacent rings 20 enclose the raceway space of the roller array 30, wherein the first groove surface 211 and the second groove surface 212 have an angle with the rolling track surface P of the roller array 30. The rolling track surface P of the roller array 30 can be understood as the plane where the rolling track of each roller of the roller array 30 is located.

[0108] The ferrule 20 may be designed with a plug hole communicating with the raceway space and a plug for plugging the plug hole (the plug hole and the plug are not shown in the figure), and each cylindrical roller 31 and the isolation block may be plugged into the raceway space through the plug hole and added with appropriate lubricating oil, and then the plug hole may be plugged and sealed with a plug. The plug hole may be located on the inside or outside of the ferrule 20, and the present disclosure does not specifically limit this. In addition, for two adjacent ferrules 20, the plug hole may be opened on any one of the ferrules, or the plug hole may be formed by the structures of the two ferrules.

[0109] Based on the above design of the raceway space, such as Figure 7As shown, in these embodiments, when the roller array 30 is installed in place in the raceway space, there is also an angle between the axial direction of each cylindrical roller 31 and the rolling track surface P of the roller array 30. That is, each cylindrical roller 31 is arranged obliquely relative to the rolling track surface P. Compared with the case where the cylindrical roller 31 is arranged orthogonally to the rolling track surface P, the design of this embodiment can comprehensively consider the stress conditions of the cylindrical roller 31 in the axial and radial directions, thereby improving the load-bearing capacity of the cylindrical roller 31.

[0110] In some embodiments, based on the above-mentioned design of tilting the cylindrical rollers 31 relative to the rolling track surface P, the axes of adjacent cylindrical rollers 31 isolated by the isolation block can be arranged orthogonally. That is, the axes of adjacent cylindrical rollers 31 are skewed and vertical, so that the slewing bearing 100 can withstand greater radial force, axial force and overturning moment, the bearing capacity can be further improved, and the working performance and reliability are better.

[0111] In the embodiment of the present disclosure, the size of the cylindrical roller 31 is not specifically limited. Figure 8 As shown, in some embodiments, the diameter d of the cylindrical roller 31 is g Equal to the axial length l of the cylindrical roller 31 g ( Figure 7 , Fig. 9 , Fig.10 The structure at the position shown can adopt a similar design). Such a size design can, on the one hand, make the contact between the cylindrical roller 31 and the raceway wall more reliable, and on the other hand, make the axial force and radial force borne by the cylindrical roller 31 equivalent, which is beneficial to further improve the load-bearing capacity of the cylindrical roller 31, and then improve its working performance and reliability.

[0112] In some embodiments, in order to reduce stress concentration at the edge of the cylindrical roller 31, the generatrix where the cylindrical roller 31 contacts the raceway space (that is, the effective length section where the cylindrical roller 31 contacts the raceway space) can be reshaped. For example, the roller reshaping formula in Section 5.2.3 of ISO 16281-2008 can be referred to to perform a reshaped design on the above-mentioned generatrix of the cylindrical roller 31.

[0113] In the embodiment of the present disclosure, the gear ring 40 is located outside the ferrule 20, and its specific location is not limited and can be flexibly selected according to specific needs. Figure 7 Taking the gear ring 40 in the embodiment shown as an example, the gear ring 40 can be set at any position on the outer periphery of the ring 20, such as the surface area W1, the surface area W2, or the surface area W3 shown in the figure. In addition, the gear ring 40 can also refer to Figure 1A Set it in the position shown.

[0114] like Figure 1A , Figure 1B , Figure 1C and Figure 1D In the embodiments shown, the drive device 50 on the fourth ring 24 drives the gear ring 40 on the fifth ring 25 to rotate, so that the fifth ring 25 can rotate relative to the first, second, third, and fourth rings, thereby realizing the rotation of the slewing bearing 100. The drive device 50 on the third ring 23 drives the gear ring 40 on the fourth ring 24 to rotate, so that the fourth and fifth rings can rotate relative to the first, second, and third rings, thereby realizing the tilting and leveling of the slewing bearing 100. The drive device 50 on the second ring 22 drives the gear ring 40 on the third ring 23 to rotate, so that the third, fourth, and fifth rings can rotate relative to the first and second rings, thereby realizing the tilting and leveling of the slewing bearing 100. By driving the gear ring 40 on the second ring 22 to rotate through the driving device 50 on the first ring 21 , the second, third, fourth and fifth rings can rotate relative to the first ring 21 , thereby realizing the rotation of the slewing bearing 100 .

[0115] like Figure 1A As shown, in some embodiments of the present disclosure, the slewing bearing 100 may further include a control device 60 ( Figure 1B , Figure 1C and Figure 1D The middle slewing bearing 100 may also include a control device (not shown in the figure), the control device 60 is electrically connected to N-1 drive devices 50, and is configured to control at least one drive device 50 to drive the corresponding ring gear 40 to rotate based on at least one of a slewing instruction, a tilting instruction, or a leveling instruction.

[0116] For example, refer to Figure 1A As shown, the control device 60 can control the driving device 50 on the fourth ring 24 to drive the gear ring 40 on the fifth ring 25 to rotate based on the rotation instruction, thereby realizing the rotation of the slewing bearing 100.

[0117] For example, in Figure 1A In the state shown, the control device 60 can control the driving device 50 on the third ring 23 to drive the gear ring 40 on the fourth ring 24 to rotate the first target angle based on the tilt instruction, thereby realizing the tilt of the slewing bearing 100, so that the slewing bearing 100 is adjusted as follows: Figure 1B Working posture shown.

[0118] For example, in Figure 1B In the state shown, the control device 60 can control the driving device 50 on the second ring 22 to drive the gear ring 40 on the third ring 23 to rotate the second target angle based on the tilt instruction, so as to achieve further tilting of the slewing bearing 100, so that the slewing bearing 100 is adjusted as follows: Figure 1CWorking posture shown.

[0119] For example, in Figure 1A , Figure 1B , Figure 1C and Figure 1D In any of the working postures shown, the control device 60 can control the driving device 50 on the third ring 23 to drive the gear ring 40 on the fourth ring 24 to rotate to a third target angle based on the leveling instruction, thereby achieving the leveling of the slewing bearing 100 and making the inclination angle of the slewing bearing 100 within the allowable error range.

[0120] In these embodiments, the slewing bearing 100 can not only realize slewing, but also realize automatic adjustment of the inclination angle and leveling, and is particularly suitable for scenarios with high leveling accuracy requirements.

[0121] The disclosed embodiment also provides a working machine, comprising a support carrier 300, a working device 500, and the slewing bearing 100 of any of the aforementioned embodiments, wherein the support carrier 300 is fixedly connected to the first ring 21 of the slewing bearing 100, and the working device 500 is fixedly connected to the Nth ring of the slewing bearing 100.

[0122] The type of the working machine is not limited, and may include but is not limited to an excavator, a crane, a rotary drilling rig, a pump truck, or a coal mining machine. The working device 500 can be driven by the slewing bearing 100 to perform a slewing motion, thereby driving the working mechanism of the working machine such as the excavator, the crane, the rotary drilling rig, the pump truck, or the coal mining machine to perform a slewing motion. Depending on the specific product type of the working machine, the support carrier 300 may be, for example, a foundation, a ship, a fixed chassis of the working machine, or a vehicle chassis.

[0123] Based on the above-mentioned design concept of the slewing bearing 100, the working machine can work in more application scenarios, including but not limited to scenarios where the leveling accuracy of the slewing bearing 100 is required to be high, scenarios where the slewing bearing 100 needs to work at a certain tilt angle, scenarios where the working device 500 needs to work at a limited height, scenarios where the working device 500 needs to work in a bent position, scenarios where the working device 500 needs to avoid obstacles, or scenarios where the working machine needs to work on a slope, etc.

[0124] like Fig.11 As shown, the embodiment of the present disclosure also provides an assembly method 800 of a slewing bearing, wherein the slewing bearing can be, for example, Figure 1A The slewing bearing 100 is shown. The assembly method 800 may include the following steps S1 and S2.

[0125] In step S1, the first ferrule is fixedly connected to the assembly workbench.

[0126] In step S2, the remaining N-1 rings of the N rings except the first ring are assembled in sequence above the first ring, wherein the process of assembling the nth (1<n≤N) ring may include:

[0127] Adjust the inclination angle of the assembly workbench so that the end face of the ring opening of the n-1th ring away from the assembly workbench is horizontal; and

[0128] The nth bearing ring is connected to the n-1th bearing ring via a roller row so as to be rotatable relative to each other.

[0129] The slewing bearing assembled by the above-mentioned assembly method 800 can not only realize a large tilt angle of itself, but also realize actions such as rotation, tilt and adjustment on a support carrier with a large tilt angle, thereby improving the adaptability of the operating machinery to the working environment and making it suitable for more application scenarios.

[0130] When installing the nth ring (1<n≤N), first adjust the installation docking surface of the ring below it (n-1th ring) (the installation docking surface of the lower ring is parallel to the ring mouth end face of the lower ring away from the assembly workbench) to be horizontal, and then install the nth ring. In this way, it is not only convenient to install and adjust the nth ring through the lifting equipment, but also conducive to improving the installation accuracy, thereby improving the assembly accuracy and assembly efficiency of the slewing bearing.

[0131] In some embodiments, for Figure 1A The slewing bearing 100 shown can be assembled specifically through the following steps:

[0132] First, the gear ring 40 is installed on the outer sides of the second ring 22, the third ring 23, the fourth ring 24, and the fifth ring 25 respectively;

[0133] Then, adjust the level of the assembly workbench, place the first ferrule 21 on the assembly workbench, and use multiple bolt assemblies to fix the first ferrule 21 to the installation workbench. Since the first ferrule 21 is in the shape of a flange, the end faces of the ring opening on both sides are parallel. Therefore, after the first ferrule 21 is assembled, the end face of the ring opening away from the assembly workbench is also basically horizontal. If there is a horizontality error after assembly, the inclination angle of the assembly workbench can be adjusted again to make the end face of the ring opening of the first ferrule away from the assembly workbench horizontal. In this step, the assembly workbench is used to provide an assembly platform for the slewing bearing 100. The number of bolt assemblies can be less than or equal to the number of mounting holes 203a. After the slewing bearing 100 is assembled, the bolt assemblies can be disassembled to separate the slewing bearing 100 from the assembly workbench;

[0134] Then, the second ferrule 22 is hoisted above the first ferrule 21, so that the A-side ring opening end face of the second ferrule 22 faces downward, and is parallel to the upper side ring opening end face of the first ferrule 21, and is coaxial with the first ferrule 21; then, the second ferrule 22 is dropped and installed on the first ferrule 21, and the step surface design of the first ferrule 21 and the second ferrule 22 can be used for coaxial positioning and mutual guidance; then, the roller row 30 and the isolation block are installed into the raceway space between the first ferrule 21 and the second ferrule 22 through the plug hole designed on the first ferrule 21 (the plug hole can also be designed on the second ferrule 22, or the plug hole is jointly formed by the structure of the first ferrule 21 and the second ferrule 22), and appropriate lubricating oil can also be added; then, the plug hole is plugged and sealed with a plug;

[0135] Then, adjust the inclination angle of the assembly workbench so that the B-side ring opening end face of the second ring 22 is in a horizontal state; then, hoist the third ring 23 above the second ring 22 so that the C-side ring opening end face of the third ring 23 faces downward and is parallel to the B-side ring opening end face of the second ring 22 and is coaxial with the second ring 22; then, drop the third ring 23 onto the second ring 22, and use the second ring 22 to install the third ring 23. The step surface design of the third ferrule 23 is coaxially positioned and mutually guided; then, the roller row 30 and the isolation block are installed into the raceway space between the second ferrule 22 and the third ferrule 23 through the plug hole designed on the second ferrule 22 (the plug hole can also be designed on the third ferrule 23, or the plug hole is jointly formed by the structure of the second ferrule 22 and the third ferrule 23), and appropriate lubricating oil can also be added; then, the plug hole is plugged and sealed with a plug;

[0136] Then, adjust the inclination angle of the assembly workbench so that the D-side ring opening end face of the third ring 23 is in a horizontal state; then, hoist the fourth ring 24 above the third ring 23 so that the E-side ring opening end face of the fourth ring 24 faces downward and is parallel to the D-side ring opening end face of the third ring 23 and coaxial with the third ring 23; then, drop the fourth ring 24 onto the third ring 23, and use the third ring 23 to install the fourth ring 24. The step surface design of the fourth ferrule 24 is coaxially positioned and mutually guided; then, the roller row 30 and the isolation block are installed into the raceway space between the third ferrule 23 and the fourth ferrule 24 through the plug hole designed on the third ferrule 23 (the plug hole can also be designed on the fourth ferrule 24, or the plug hole is jointly formed by the structure of the third ferrule 23 and the fourth ferrule 24), and appropriate lubricating oil can also be added; then, the plug hole is plugged and sealed with a plug;

[0137] Then, adjust the inclination angle of the assembly workbench so that the F-side ring opening end face of the fourth ring 24 is in a horizontal state; then, hoist the fifth ring 25 above the fourth ring 24 so that the ring opening end face of the fifth ring 25 on the same side as the roller row 30 faces downward, is parallel to the F-side ring opening end face of the fourth ring 24, and is coaxial with the fourth ring 24; then, drop the fifth ring 25 onto the fourth ring 24, and use the fourth ring 24 to install the fifth ring 25. The step surfaces of the ferrule 24 and the fifth ferrule 25 are designed for coaxial positioning and mutual guidance; then, the roller row 30 and the spacer block are installed into the raceway space between the fourth ferrule 24 and the fifth ferrule 25 through the plug hole designed on the fourth ferrule 24 (the plug hole can also be designed on the fifth ferrule 25, or the plug hole is jointly formed by the structure of the fourth ferrule 24 and the fifth ferrule 25), and appropriate lubricating oil can also be added; then, the plug hole is plugged and sealed with a plug;

[0138] Then, the driving devices 50 are respectively installed on the outer circumferences of the first to the N-1th rings. After the driving devices 50 are installed, the transmission ends thereof mesh with the corresponding gear rings 40 .

[0139] After completing the above steps, the bolt assembly can be removed, and the product assembly of the slewing bearing 100 is completed.

[0140] The disclosed embodiment further provides a working machine, which includes the slewing bearing 100 of any of the aforementioned embodiments, a support carrier fixedly connected to the first ring of the slewing bearing, and a working device fixedly connected to the Nth ring of the slewing bearing.

[0141] Based on the design concept of the aforementioned slewing bearing 100, the operating machinery can obtain corresponding beneficial effects. The type of operating machinery is not limited, and may include but is not limited to excavators, cranes, rotary drilling rigs, pump trucks, or coal mining machines. The working device can be driven by the slewing bearing to perform a slewing motion, thereby driving the working mechanism of the operating machinery such as the above-mentioned excavator, crane, rotary drilling rig, pump truck, or coal mining machine to perform a slewing motion. Depending on the specific product type of the operating machinery, the supporting carrier can be, for example, a foundation, a ship, a fixed chassis of the operating machinery, or a vehicle chassis.

[0142] Although the embodiments or examples of the present disclosure have been described with reference to the accompanying drawings, it should be understood that the above-mentioned methods, systems and devices are merely exemplary embodiments or examples, and the scope of the present utility model is not limited by these embodiments or examples, but is only limited by the claims after authorization and their equivalent scope. Various elements in the embodiments or examples can be omitted or replaced by their equivalent elements. In addition, each step can be performed in an order different from that described in the present disclosure. Further, the various elements in the embodiments or examples can be combined in various ways. It is important that with the evolution of technology, many elements described herein can be replaced by equivalent elements that appear after the present disclosure.

Claims

1. A slewing bearing, characterized in that: include: N ferrules are arranged in sequence and are connected to each other by roller rows so as to be relatively rotatable, wherein N≥2, and among the N ferrules, the first ferrule is used for fixed connection with the support carrier, and the Nth ferrule is used for fixed connection with the working device; N-1 gear rings are arranged one by one on the outside of N-1 of the N rings, wherein when N≥3, the N-1 rings are arranged continuously; and N-1 driving devices are used to drive the N-1 gear rings to rotate in a one-to-one correspondence.

2. The slewing bearing according to claim 1, characterized in that: The N-1 gear rings are arranged one-to-one on the outside of the remaining N-1 rings except the first ring among the N rings, and the N-1 driving devices are arranged one-to-one on the outer periphery of the remaining N-1 rings except the Nth ring among the N rings; or The N-1 gear rings are arranged one-to-one on the outside of the remaining N-1 rings among the N rings except the Nth ring, and the N-1 driving devices are arranged one-to-one on the outer circumference of the remaining N-1 rings among the N rings except the 1st ring.

3. The slewing bearing according to claim 1, characterized in that: The N-1 gear rings are assembled and connected with the N-1 ferrules in a one-to-one correspondence.

4. The slewing bearing according to claim 1, characterized in that: The roller row includes a plurality of cylindrical rollers, wherein isolation blocks are provided between adjacent cylindrical rollers.

5. The slewing bearing according to claim 4, characterized in that: Each of the N rings is provided with an orthogonal first groove surface and a second groove surface for the roller array, and the first groove surfaces and the second groove surfaces of adjacent rings enclose a raceway space of the roller array, wherein the first groove surface and the second groove surface respectively have an angle with the rolling track surface of the roller array.

6. The slewing bearing according to claim 5, characterized in that: The axes of adjacent cylindrical rollers are arranged orthogonally.

7. The slewing bearing according to claim 4, characterized in that: The diameter of the cylindrical roller is equal to the axial length of the cylindrical roller.

8. The slewing bearing according to any one of claims 1 to 7, characterized in that: The first ferrule and the Nth ferrule are respectively in the shape of flange plates and have a plurality of mounting holes.

9. The slewing bearing according to any one of claims 1 to 7, characterized in that: Also includes: The control device is electrically connected to the N-1 drive devices and is configured to control at least one of the N-1 drive devices to drive the corresponding gear ring to rotate based on at least one of a rotation instruction, a tilt instruction, or a leveling instruction.

10. A working machine, characterized in that: include: A slewing bearing according to any one of claims 1 to 9; The support carrier is fixedly connected to the first ferrule of the slewing bearing; as well as The working device is fixedly connected to the Nth ferrule of the slewing bearing.

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