Sealing mechanism for slewing bearing, slewing bearing and working method

Abstract

The invention belongs to the technical field of engineering elements, and relates to a sealing mechanism for a slewing bearing, the slewing bearing and a working method, the sealing mechanism comprises at least one sealing strip and a connecting assembly; according to the sealing mechanism, sealing strips are connected end to end through a connecting assembly to be matched with a gap between an inner ring and an outer ring of a slewing bearing; the connecting assembly comprises an outer sleeve piece and a pair of clamping pieces. The clamping piece is matched with the inner wall of the outer sleeve piece in shape, the outer wall of the clamping piece makes contact with the inner wall of the outer sleeve piece, the end of the sealing strip penetrates through the clamping piece and extends into the outer sleeve piece, and at the moment, the clamping piece clamps the sealing strip; the clamping pieces are connected through the memory metal, the memory metal is connected with the inner bottom face of the outer sleeve piece, the memory metal deforms and hunches upwards when heated so as to pull the two clamping pieces to be close to each other and drive the outer sleeve piece to hunch inwards, and then the end portions of the sealing strip are connected end to end to form sealing. And the sealing performance reduction caused by temperature rise is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of engineering elements, and particularly relates to a joint, in particular to a sealing mechanism for a slewing bearing, a slewing bearing and a working method. BACKGROUND

[0002] The inner ring and the outer ring of the slewing bearing are relatively rotated, the outer ring and the inner ring need to be sealed due to the large size of the slewing bearing, and a sealing ring cannot be found, so a sealing strip is used to seal the outer ring and the inner ring in the related art, the end portions of the sealing strip are connected through glue, but the inner ring and the outer ring generate friction when rotating, which increases heat, and the increased heat can cause the connection performance of the glue at the end portions of the sealing strip to decrease, thereby reducing the sealing effect of the sealing strip.

[0003] Therefore, due to the fact that the end portions of the sealing strip are connected through glue in the related art, and the connection performance of the glue decreases under the influence of heat generated by the rotation between the inner ring and the outer ring of the slewing bearing, thereby reducing the sealing effect of the sealing strip, a sealing mechanism for a slewing bearing, a slewing bearing and a working method need to be designed.

[0004] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background of the present application, and therefore, the above description is not considered to constitute information of the prior art. SUMMARY

[0005] The present application at least provides a sealing mechanism for a slewing bearing, a slewing bearing and a working method.

[0006] In a first aspect, the present application provides a sealing mechanism for a slewing bearing, comprising: at least one sealing strip, and a connecting assembly; The sealing mechanism connects the sealing strip at the head and tail through the connecting assembly to form an adaptation to the gap between the inner ring and the outer ring of the slewing bearing. The connecting assembly comprises an outer sleeve and a pair of clamping pieces. The clamping pieces are slidingly arranged in the outer sleeve, and the clamping pieces are arranged close to the corresponding end portions of the outer sleeve. The clamping pieces are adapted to the shape of the inner wall of the outer sleeve, the outer wall of the clamping pieces is in contact with the inner wall of the outer sleeve, the end portions of the sealing strip pass through the clamping pieces and extend into the outer sleeve, at this time the clamping pieces clamp the sealing strip. The clamping pieces are connected by a memory metal, and the memory metal is connected to the inner bottom surface of the outer sleeve, the memory metal deforms upward when heated to pull the two clamping pieces close and drive the outer sleeve to arch inward.

[0007] In an alternative embodiment, the outer sleeve comprises a protruding portion and a contact portion; The protruding portion is arranged at the bottom of the contact portion, and both the protruding portion and the contact portion are hollow and communicate with each other; The memory metal is connected to the inner bottom surface of the protruding portion; The protruding portion extends into the gap between the inner ring and the outer ring of the slewing bearing, and the contact portion contacts the side wall of the inner ring and the end surface of the outer ring to seal the gap.

[0008] In a second aspect, the embodiments of the present disclosure further provide a slewing bearing, comprising: An inner ring and an outer ring sleeved on the outer ring, the inner ring is rotationally connected with the outer ring; A first annular groove is formed on the inner wall of the outer ring in the circumferential direction, and a second annular groove is formed on the outer wall of the inner ring in the circumferential direction, the first annular groove and the second annular groove form a cavity; There is a gap between the outer wall of the inner ring and the inner wall of the outer ring, and the sealing mechanism for slewing bearings described above is filled in the gap.

[0009] In an alternative embodiment, the gap communicates with the cavity; The thickness of the inner ring is greater than the thickness of the outer ring, the protruding portion in the sealing mechanism extends into the gap, and the contact portion contacts the side wall of the inner ring and the end surface of the outer ring to seal the gap.

[0010] In an alternative embodiment, a plurality of balls are arranged in the cavity, and the cavity is filled with lubricating grease.

[0011] In an alternative embodiment, a plurality of oil injection holes are formed on the inner wall of the inner ring, the oil injection holes communicate with the cavity, and lubricating grease is injected into the cavity through the oil injection holes.

[0012] In an alternative embodiment, a through hole is formed on the inner wall of the inner ring, and the balls are put into the cavity through the through hole; A latch hole is formed on the end surface of the inner ring, and the latch hole communicates with the through hole; A stop block is arranged in the through hole, and a latch is arranged in the latch hole, the latch is inserted into the stop block to fix the stop block, so that the through hole is blocked.

[0013] In an alternative embodiment, when the inner ring and the outer ring rotate and rub to generate heat, the memory metal in the sealing mechanism is heated and arches, and the memory metal drives the side of the protruding portion extending into the gap to deform towards the end surface of the adjacent outer ring.

[0014] In a third aspect, the embodiments of the present disclosure further provide a working method using the sealing mechanism for slewing bearings described above, comprising: When heated, the memory metal deforms and arches upward, pulling the two clamping parts closer together and driving the outer sleeve to arch inward.

[0015] In an optional embodiment, the end portion of the sealing strip is clamped by the clamping member when passing through the clamping member.

[0016] The beneficial effect of the present invention is that the sealing mechanism for the slewing bearing comprises: at least one sealing strip, and a connecting assembly; wherein, the sealing mechanism connects the sealing strip end to end through the connecting assembly to form a fit with the gap between the inner ring and the outer ring of the slewing bearing; the connecting assembly comprises: an outer sleeve and a pair of clamping members; the clamping members are slidably arranged in the outer sleeve, and the clamping members are arranged near the corresponding ends of the outer sleeve; the clamping members are adapted to the shape of the inner wall of the outer sleeve, the outer wall of the clamping members contacts the inner wall of the outer sleeve, the end of the sealing strip passes through the clamping member and extends into the outer sleeve, at which time the clamping member clamps the sealing strip; the clamping members are connected by memory metal, and the memory metal is connected to the inner bottom surface of the outer sleeve, and the memory metal deforms and arches upward when heated to pull the two clamping members closer together and drive the outer sleeve to arch inward, thereby realizing the end to end connection of the sealing strip ends to form a seal, avoiding the degradation of sealing performance due to temperature increase.

[0017] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited herein and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A structural schematic diagram of a sealing mechanism provided in an embodiment of the present disclosure; Figure 2 A schematic structural diagram of a connection assembly provided in an embodiment of the present disclosure; Figure 3 A schematic structural diagram of a slewing bearing provided in an embodiment of the present disclosure; Figure 4A partial sectional view of a slewing bearing provided by an embodiment of the present disclosure; Figure 5 A structural schematic diagram of an inner ring provided by an embodiment of the present disclosure; Figure 6 A structural schematic diagram of an outer ring provided by an embodiment of the present disclosure.

[0021] In the drawings: 1 sealing mechanism, 11 sealing strip, 12 connecting assembly, 121 outer sleeve, 122 protruding part, 123 contact part, 124 clamping part, 125 memory metal; 2 slewing bearing, 21 inner ring, 211 second annular groove, 22 outer ring, 221 first annular groove, 23 ball, 24 oil injection hole, 25 through hole, 26 bolt hole, 27 stop block, 28 cavity, 29 gap. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] As used herein, the phrases "in an embodiment", "according to an embodiment", "in some embodiments", and the like generally mean the fact that a particular feature, structure, or characteristic described after the phrase can be included in at least one embodiment of the present disclosure. Therefore, the particular feature, structure, or characteristic can be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example", "exemplary", and the like are used as an example, instance, or illustration. Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily interpreted as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example", "exemplary", and the like is intended to present the concept in a specific manner.

[0024] The inner ring and the outer ring of the slewing bearing rotate relative to each other. Since the slewing bearing is large in size, the outer ring and the inner ring need to be sealed. However, a suitable sealing ring cannot be found, so the sealing strip is used to seal the outer ring and the inner ring in the related art. The end portions of the sealing strip are connected by glue or the like. However, the inner ring and the outer ring generate friction when rotating, which increases the heat. The increased heat can cause the glue connection performance of the end portions of the sealing strip to decrease, which reduces the sealing effect of the sealing strip.

[0025] And when the inner ring and the outer ring friction causes temperature rise, the sealing strip will expand, causing the sealing strip and the inner ring and the outer ring more closely contact to increase the wear of the sealing strip, and the pressure in the chamber is expanded by heat, which will cause the sealing strip to be washed away, affecting the sealing performance.

[0026] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0027] Some embodiments of the present application will be described in detail below with reference to the drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0028] As shown in Figure 1 and Figure 2 At least one disclosed embodiment provides a sealing mechanism for rotary support, comprising: at least one sealing strip 11, and a connecting assembly 12; wherein the sealing mechanism 1 connects the sealing strip 11 head to tail through the connecting assembly 12 to form a gap 29 between the inner ring 21 and the outer ring 22 of the rotary support 2; the connecting assembly 12 comprises: an outer sleeve 121 and a pair of clamping pieces 124; the clamping pieces 124 are slidingly arranged in the outer sleeve 121, and the clamping pieces 124 are arranged close to the corresponding end of the outer sleeve 121; the clamping pieces 124 are adapted to the shape of the inner wall of the outer sleeve 121, the outer wall of the clamping pieces 124 is in contact with the inner wall of the outer sleeve 121, the end of the sealing strip 11 extends into the outer sleeve 121 through the clamping pieces 124, at this time the clamping pieces 124 clamp the sealing strip 11; the clamping pieces 124 are connected by a memory metal 125, and the memory metal 125 is connected with the inner bottom surface of the outer sleeve 121, the memory metal 125 deforms upward when heated to pull the two clamping pieces 124 close and drive the outer sleeve 121 to arch inward, thereby realizing the head-to-tail connection of the ends of the sealing strip 11 to form a seal, avoiding the decline of sealing performance caused by temperature rise.

[0029] In this embodiment, the number of sealing strips 11 can be set according to the size of the rotary support 2, the larger the rotary support 2, the more sealing strips 11 can be used, the ends of adjacent sealing strips 11 are connected by the connecting assembly 12 to ensure that the inner ring 21 and the outer ring 22 of the rotary support 2 are sealed.

[0030] In this embodiment, the size of the inner wall of the clamping piece 124 is slightly smaller than the sealing strip 11, so that when the sealing strip 11 extends into the outer sleeve 121 through the clamping piece 124, the sealing strip 11 is clamped by the clamping piece 124 and is clamped, so that when the memory metal 125 deforms, it can clamp and move the sealing strip 11.

[0031] In this embodiment, when the memory metal 125 is deformed by heat, the clamping member 124 can pull the sealing strip 11 so that the sealing strip 11 is stretched. At this time, when the sealing strip 11 is heated and expanded, the stretched sealing strip 11 expands and contacts and squeezes less toward the inner ring 21 and the outer ring 22 than the non-stretched sealing strip 11, so that the increase in friction at the contact position between the sealing strip 11 and the inner ring 21 and the contact position between the sealing strip 11 and the outer ring 22 will be smaller, thereby reducing the wear of the sealing strip 11.

[0032] In this embodiment, when the memory metal 125 deforms, the side of the protrusion 122 extending into the gap 29 is deformed, and the side of the protrusion 122 extending into the gap 29 is concave, so that the space between the sealed gap 29 and the chamber 28 is increased. The pressure increased by heat in the chamber 28 is reduced due to the increase in space, thereby preventing excessive pressure from breaking the seal.

[0033] like Figure 2 As shown, in an optional embodiment, the outer sleeve 121 includes: a protrusion 122 and a contact portion 123; the protrusion 122 is arranged at the bottom of the contact portion 123, and the protrusion 122 and the contact portion 123 are both hollow and connected; the memory metal 125 is connected to the inner bottom surface of the protrusion 122; the protrusion 122 extends into the gap 29 formed between the inner ring 21 and the outer ring 22 of the slewing bearing 2, and the contact portion 123 contacts the side wall of the inner ring 21 and the end face of the outer ring 22 to seal the gap 29.

[0034] In this embodiment, the protrusion 122 can extend into the gap 29 to fix the outer sleeve 121 , and the contact portion 123 contacts the end surface of the outer ring 22 and the outer wall of the inner ring 21 to better ensure the sealing effect at the outer sleeve 121 .

[0035] In this embodiment, the outer sleeve 121 and the sealing strip 11 can be made of, but not limited to, rubber or the like.

[0036] In this embodiment, the clamping member 124 can be slidably connected to the contact portion 123. For example, a sliding groove is provided on the inner wall of the contact portion 123 away from the protrusion 122, and a slider adapted to the sliding groove is provided on the outer wall of the clamping member 124. The slider is located in the sliding groove to guide and limit the movement of the clamping member 124 through the cooperation of the sliding groove and the slider after the memory metal 125 is deformed.

[0037] In this embodiment, when the temperature drops, the memory metal 125 recovers its deformation, driving the clamping member 124 to return to its original position. After the clamping member 124 returns to its original position, the sealing strip 11 is no longer stretched.

[0038] In this embodiment, the sealing strip 11 is embedded in the gap 29 to achieve sealing.

[0039] As Figure 3 , Figure 4 , Figure 5 and Figure 6 illustrated, at least one other disclosed embodiment also provides a slewing bearing, comprising: an inner ring 21 and an outer ring 22 sleeved outside the inner ring 21, the inner ring 21 and the outer ring 22 being rotationally connected; a first annular groove 221 is formed on the inner wall of the outer ring 22 in the circumferential direction, and a second annular groove 211 is formed on the outer wall of the inner ring 21 in the circumferential direction, the first annular groove 221 and the second annular groove 211 forming a cavity 28; there is a gap 29 between the outer wall of the inner ring 21 and the inner wall of the outer ring 22, and the sealing mechanism 1 for the slewing bearing 2 is filled in the gap 29.

[0040] In this embodiment, the sealing mechanism 1 is arranged at the upper end face and the lower end face of the slewing bearing 2.

[0041] As Figure 4 illustrated, in an alternative embodiment, the gap 29 is in communication with the cavity 28; The thickness of the inner ring 21 is greater than the thickness of the outer ring 22, the protruding part 122 in the sealing mechanism 1 extends into the gap 29, and the contact part 123 is in contact with the side wall of the inner ring 21 and the end face of the outer ring 22 to seal the gap 29.

[0042] As Figure 4 illustrated, in an alternative embodiment, a plurality of balls 23 are arranged in the cavity 28, and grease is filled in the cavity 28.

[0043] In this embodiment, the rotation between the inner ring 21 and the outer ring 22 can be facilitated by the balls 23 and the grease.

[0044] As Figure 4 illustrated, in an alternative embodiment, a plurality of oil injection holes 24 are formed on the inner wall of the inner ring 21, the oil injection holes 24 being in communication with the cavity 28, so that the grease can be injected into the cavity 28 through the oil injection holes 24.

[0045] As Figure 4 illustrated, in an alternative embodiment, a through hole 25 is formed on the inner wall of the inner ring 21, so that the balls 23 can be put into the cavity 28 through the through hole 25; a plug hole 26 is formed on the end face of the inner ring 21, the plug hole 26 being in communication with the through hole 25; a stop block 27 is arranged in the through hole 25, and a plug is arranged in the plug hole 26, the plug being inserted into the stop block 27 to fix the stop block 27, so that the through hole 25 is blocked.

[0046] In the embodiment, when the ball 23 enters the chamber 28 through the through hole 25, the through hole 25 is blocked by the block 27, and then the block 27 is fixed by the pin passing through the pin hole 26 to connect the block 27, so as to prevent the ball 23 from rolling out of the through hole 25.

[0047] In the embodiment, after the installation of the ball 23 is completed, the grease can be injected into the chamber 28 from the oil injection hole 24.

[0048] In an alternative embodiment, when the inner ring 21 and the outer ring 22 rotate and rub to generate heat, the memory metal 125 in the sealing mechanism 1 is heated and arches upward, and the convex part 122 is deformed on one side of the gap 29 to approach the end face of the outer ring 22.

[0049] At least one other disclosed embodiment also provides a working method of the sealing mechanism 1 of the above-mentioned slewing bearing 2, comprising: when the memory metal 125 is heated, it deforms and arches upward to pull the two clamping pieces 124 close and drive the outer sleeve 121 to arch inward.

[0050] In an alternative embodiment, the end of the sealing strip 11 is clamped by the clamping piece 124 when it passes through the clamping piece 124.

[0051] In summary, the sealing mechanism 1 of the slewing bearing 2 comprises: at least one sealing strip 11, and a connecting assembly 12; wherein the sealing mechanism 1 connects the sealing strip 11 end to end through the connecting assembly 12 to form an adaptation to the gap 29 between the inner ring 21 and the outer ring 22 of the slewing bearing 2; the connecting assembly 12 comprises: an outer sleeve 121 and a pair of clamping pieces 124; the clamping pieces 124 are slidingly arranged in the outer sleeve 121, and the clamping pieces 124 are arranged close to the corresponding end of the outer sleeve 121; the clamping pieces 124 are adapted in shape to the inner wall of the outer sleeve 121, the outer wall of the clamping pieces 124 is in contact with the inner wall of the outer sleeve 121, the end of the sealing strip 11 passes through the clamping pieces 124 and extends into the outer sleeve 121, at this time the clamping pieces 124 clamp the sealing strip 11; the clamping pieces 124 are connected by the memory metal 125, and the memory metal 125 is connected to the inner bottom surface of the outer sleeve 121; when the memory metal 125 is heated, it deforms and arches upward to pull the two clamping pieces 124 close and drive the outer sleeve 121 to arch inward, thereby achieving the end-to-end connection of the ends of the sealing strip 11 to form a seal, and avoiding the decline in sealing performance due to temperature rise.

[0052] In the description of the embodiments of the present application, unless specifically defined and limited otherwise, the terms "mount", "connect", "connection" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application. In addition, terms such as "first", "second" and other numerical terms are used herein, unless otherwise explicitly indicated herein. Therefore, the first element, component, region, layer or section discussed above can be referred to as the second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0054] Spatially relative terms, such as "inner", "outer", "below", "below", "lower", "above", "upper", and the like, can be used herein to facilitate description of the relationship of one element or feature to another element or feature as illustrated in the drawings. In addition to the orientation depicted in the drawings, the spatially relative terms can be intended to cover different orientations of the device in use or operation. For example, if the device in the drawing is turned over, the element described as "below" or "under" the other element or feature will be oriented "above" the other element or feature. Therefore, the example term "below" can cover the above and below orientations. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0055] In the above discussion, unless otherwise stated, the terms "about", "approximately", "substantially" and the like mean a + / - 10% variation of the value when used to describe numerical values.

[0056] With the above ideal embodiments according to the present application as the inspiration, through the above description, relevant personnel can make various changes and modifications without deviating from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined by the scope of the claims.

Claims

1. A seal mechanism for a rotary bearing, characterized by, The sealing mechanism (1) comprises at least one sealing strip (11) and a connecting assembly (12). The sealing mechanism (1) is connected to the inner ring (21) and the outer ring (22) of the slewing bearing (2) through the connecting assembly (12). The connecting assembly (12) comprises an outer sleeve (121) and a pair of clamping members (124). The clamping members (124) are slidably arranged in the outer sleeve (121) and are arranged near the corresponding ends of the outer sleeve (121). The clamping members (124) are adapted to the shape of the inner wall of the outer sleeve (121), the outer wall of the clamping members (124) is in contact with the inner wall of the outer sleeve (121), the ends of the sealing strip (11) extend into the outer sleeve (121) through the clamping members (124), and the clamping members (124) clamp the sealing strip (11) at this time. The clamping members (124) are connected by a memory metal (125), and the memory metal (125) is connected to the inner bottom surface of the outer sleeve (121). When heated, the memory metal (125) deforms upward to pull the two clamping members (124) close together and drive the outer sleeve (121) to arch inward.

2. The slewing bearing sealing mechanism of claim 1, wherein The outer sleeve (121) comprises a protruding portion (122) and a contact portion (123). The protruding portion (122) is arranged at the bottom of the contact portion (123), and the protruding portion (122) and the contact portion (123) are both hollow and communicate with each other. The memory metal (125) is connected to the inner bottom surface of the protruding portion (122). The protruding portion (122) extends into the gap (29) formed between the inner ring (21) and the outer ring (22) of the slewing bearing (2), and the contact portion (123) is in contact with the side wall of the inner ring (21) and the end surface of the outer ring (22) to seal the gap (29). The sealing mechanism (1) comprises at least one sealing strip (11) and a connecting assembly (12).

3. Slew bearing, characterized in that The sealing mechanism (1) is connected to the inner ring (21) and the outer ring (22) of the slewing bearing (2) through the connecting assembly (12). The connecting assembly (12) comprises an outer sleeve (121) and a pair of clamping members (124). The clamping members (124) are slidably arranged in the outer sleeve (121) and are arranged near the corresponding ends of the outer sleeve (121). The clamping members (124) are adapted to the shape of the inner wall of the outer sleeve (121), the outer wall of the clamping members (124) is in contact with the inner wall of the outer sleeve (121), the ends of the sealing strip (11) extend into the outer sleeve (121) through the clamping members (124), and the clamping members (124) clamp the sealing strip (11) at this time. The clamping members (124) are connected by a memory metal (125), and the memory metal (125) is connected to the inner bottom surface of the outer sleeve (121). When heated, the memory metal (125) deforms upward to pull the two clamping members (124) close together and drive the outer sleeve (121) to arch inward.

2. The slewing bearing sealing mechanism of claim 1, wherein The outer sleeve (121) comprises a protruding portion (122) and a contact portion (123). The protruding portion (122) is arranged at the bottom of the contact portion (123), and the protruding portion (122) and the contact portion (123) are both hollow and communicate with each other. The memory metal (125) is connected to the inner bottom surface of the protruding portion (122). The protruding portion (122) extends into the gap (29) formed between the inner ring (21) and the outer ring (22) of the slewing bearing (2), and the contact portion (123) is in contact with the side wall of the inner ring (21) and the end surface of the outer ring (22) to seal the gap (29). The sealing mechanism (1) comprises at least one sealing strip (11) and a connecting assembly (12). The sealing mechanism (1) is connected to the inner ring (21) and the outer ring (22) of the slewing bearing (2) through the connecting assembly (12). The connecting assembly (12) comprises an outer sleeve (121) and a pair of clamping members (124). The clamping members (124) are slidably arranged in the outer sleeve (121) and are arranged near the corresponding ends of the outer sleeve (121). The clamping members (124) are adapted to the shape of the inner wall of the outer sleeve (121), the outer wall of the clamping members (124) is in contact with the inner wall of the outer sleeve (121), the ends of the sealing strip (11) extend into the outer sleeve (121) through the clamping members (124), and the clamping members (124) clamp the sealing strip (11) at this time. The clamping members (124) are connected by a memory metal (125), and the memory metal (125) is connected to the inner bottom surface of the outer sleeve (121). When heated, the memory metal (125) deforms upward to pull the two clamping members (124) close together and drive the outer sleeve (121) to arch inward.

2. The slewing bearing sealing mechanism of claim 1, wherein The outer sleeve (121) comprises a protruding portion (122) and a contact portion (123). The protruding portion (122) is arranged at the bottom of the contact portion (123), and the protruding portion (122) and the contact portion (123) are both hollow and communicate with each other. The memory metal (125) is connected to the inner bottom surface of the protruding portion (122). The protruding portion (122) extends into the gap (29) formed between the inner ring (21) and the outer ring (22) of the slewing bearing (2), and the contact portion (123) is in contact with the side wall of the inner ring (21) and the end surface of the outer ring (22) to seal the gap (29). The sealing mechanism (1) comprises at least one sealing strip (11) and a connecting assembly (12). The sealing mechanism (1) is connected to the inner ring (21) and the outer ring (22) of the slewing bearing (2) through the connecting assembly (12). The connecting assembly (12) comprises an outer sleeve (121) and a pair of clamping members (124). The clamping members (124) are slidably arranged in the outer sleeve (121) and are arranged near the corresponding ends of the outer sleeve (121). The clamping members (124) are adapted to the shape of the inner wall of the outer sleeve (121), the outer wall of the clamping members (124) is in contact with the inner wall of the outer sleeve (121), the ends of the sealing strip (11) extend into the outer sleeve (121) through the clamping members (124), and the clamping members (124) clamp the sealing strip (11) at this time. The clamping members (124) are connected by a memory metal (125), and the memory metal (125) is connected to the inner bottom surface of the outer sleeve (121). When heated, the memory metal (125) deforms upward to pull the two clamping members (124) close together and drive the outer sleeve (121) to arch inward.

2. The slewing bearing sealing mechanism of claim 1, wherein The outer sleeve (121) comprises a protruding portion (122) and a contact portion (123). The protruding portion (122) is arranged at the bottom of the contact portion (123), and the protruding portion (122) and the contact portion (123) are both hollow and communicate with each other. The memory metal (125) is connected to the inner bottom surface of the protruding portion (122). The protruding portion (122) extends into the gap (29) formed between the inner ring (21) and the outer ring (22) of the slewing bearing (2), and the contact portion (123) is in contact with the side wall of the inner ring (21) and the end surface of the outer ring (22) to seal the gap (29). The sealing mechanism (1) comprises at least one sealing strip (11) and a connecting assembly (12). The sealing mechanism (1) is connected to the inner ring (21) and the outer ring (22) of the slewing bearing (2) through the connecting assembly (12). The connecting assembly (12) comprises an outer sleeve (121) and a pair of clamping members (124). The clamping members (124) are slidably arranged in the outer sleeve (121) and are arranged near the corresponding ends of the outer sleeve (121). The clamping members (124) are adapted to the shape of the inner wall of the outer sleeve (121), the outer wall of the clamping members (124) is in contact with the inner wall of the outer sleeve (121), the ends of the sealing strip (11) extend into the outer sleeve (121) through the clamping members (124), and the clamping members (124) clamp the sealing strip (11) at this time. The clamping members (124) are connected by a memory metal (125), and the memory metal (125 A plurality of balls (23) are arranged in the chamber (28), and the chamber (28) is filled with lubricating grease.

6. The rotary bearing according to claim 5, wherein A plurality of oil injection holes (24) are arranged on the inner wall of the inner ring (21), and the oil injection holes (24) are in communication with the chamber (28) so as to inject lubricating grease into the chamber (28) through the oil injection holes (24).

7. The rotary bearing according to claim 5, wherein A through hole (25) is arranged on the inner wall of the inner ring (21) so as to put the balls (23) into the chamber (28) through the through hole (25); A latch hole (26) is arranged on the end face of the inner ring (21), and the latch hole (26) is in communication with the through hole (25); A stop block (27) is arranged in the through hole (25), and a latch is arranged in the latch hole (26), the latch is inserted into the stop block (27) to fix the stop block (27), so that the through hole (25) is blocked.

8. The rotary bearing according to claim 5, wherein When the inner ring (21) and the outer ring (22) rotate and rub to generate heat, the memory metal (125) in the sealing mechanism (1) is heated and arches, the memory metal (125) drives the protruding part (122) to deform towards the end face of the approaching outer ring (22) on one side of the gap (29).

9. A method of operating a sealing mechanism for a slewing ring as defined in claim 1, wherein Including: When the memory metal (125) is heated and deformed to arch upwards, the two clamping parts (124) are pulled close, and the outer sleeve part (121) is deformed to arch inwards.

10. The working method according to claim 9, wherein When the end of the sealing strip (11) passes through the clamping part (124), the end of the sealing strip (11) is clamped by the clamping part (124).

Images