CN113415351A - Supporting chain wheel and engineering machinery - Google Patents

Supporting chain wheel and engineering machinery Download PDF

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Publication number
CN113415351A
CN113415351A CN202110898562.2A CN202110898562A CN113415351A CN 113415351 A CN113415351 A CN 113415351A CN 202110898562 A CN202110898562 A CN 202110898562A CN 113415351 A CN113415351 A CN 113415351A
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CN
China
Prior art keywords
wheel
framework
sealing structure
rolling bearing
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110898562.2A
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Chinese (zh)
Inventor
洪伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suote Transmission Equipment Co Ltd
Original Assignee
Suote Transmission Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suote Transmission Equipment Co Ltd filed Critical Suote Transmission Equipment Co Ltd
Priority to CN202110898562.2A priority Critical patent/CN113415351A/en
Publication of CN113415351A publication Critical patent/CN113415351A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/088—Endless track units; Parts thereof with means to exclude or remove foreign matter, e.g. sealing means, self-cleaning track links or sprockets, deflector plates or scrapers
    • B62D55/0887—Track-articulation sealings against dust, water, mud or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/092—Endless track units; Parts thereof with lubrication means

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention relates to the technical field of engineering machinery, in particular to a carrier wheel and engineering machinery. The supporting chain wheel comprises a wheel shaft, a wheel body, a rolling bearing, a first framework sealing structure and a second framework sealing structure, wherein the wheel body is sleeved outside the wheel shaft; the rolling bearing is arranged between the wheel shaft and the wheel body; the first framework sealing structure is sleeved on the periphery of the wheel shaft and is positioned outside the rolling bearing; the second framework sealing structure is arranged on the inner periphery of the wheel body and located outside the rolling bearing, and the second framework sealing structure is in rotary butt joint with the first framework sealing structure and forms at least one oil cavity suitable for containing lubricating oil with the first framework sealing structure. The supporting chain wheel provided by the invention can prevent impurities such as soil, dust and the like from entering the supporting chain wheel, and has good sealing performance.

Description

Supporting chain wheel and engineering machinery
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a carrier wheel and engineering machinery.
Background
The supporting chain wheel is widely applied to a crawler chassis of crawler-type engineering machinery, is an important component of the crawler chassis, is mainly used for supporting the weight of a crawler, guiding the crawler to rotate along the supporting chain wheel, and preventing the crawler from slipping and derailing.
At present, some support sprocket among the prior art mainly comprise parts such as wheel body, shaft, axle sleeve, floating oil seal, end cover, and the shaft passes through the axle sleeve to be installed in the wheel body, and inside notes have lubricating oil such as gear oil or machine oil that are used for the lubrication, seals through floating oil seal in the one end of wheel body, prevents that lubricating oil from revealing. In the use, because the operating mode of holding in the palm the sprocket is complicated, often work in adverse circumstances such as muddy water, impurity such as earth dust easily gets into and holds in the palm the sprocket, causes the damage and the sealed inefficacy of the seal structure who holds in the palm the sprocket. The above situation makes the chain supporting wheel in the prior art have the defects of poor sealing performance and easy damage of the sealing structure.
Disclosure of Invention
In order to solve the problems, the invention provides a carrier wheel, which comprises a wheel shaft, a wheel body, a rolling bearing, a first framework sealing structure and a second framework sealing structure, wherein the wheel body is sleeved outside the wheel shaft; the rolling bearing is arranged between the wheel shaft and the wheel body; the first framework sealing structure is sleeved on the periphery of the wheel shaft and is positioned outside the rolling bearing; the second framework sealing structure is arranged on the inner periphery of the wheel body and located outside the rolling bearing, and the second framework sealing structure is in rotary butt joint with the first framework sealing structure and forms at least one oil cavity suitable for containing lubricating oil with the first framework sealing structure.
The invention provides a chain supporting wheel, wherein a rolling bearing is a self-lubricating bearing.
According to the chain supporting wheel provided by the invention, the first framework sealing structure is in interference fit with the inner periphery of the wheel body.
According to the chain supporting wheel provided by the invention, the second framework sealing structure is in interference fit with the periphery of the wheel shaft.
The chain supporting wheel further comprises a retainer ring, a step hole is formed in the inner periphery of the wheel body, a mounting groove is formed in the outer periphery of the wheel shaft, one end of the retainer ring is arranged in the mounting groove, the other end of the retainer ring protrudes out of the outer periphery of the wheel shaft, and a rolling bearing abuts between the step hole and the retainer ring.
The chain supporting wheel provided by the invention is provided with two rolling bearings, two retainer rings, two mounting grooves and two step holes, wherein the two step holes are respectively arranged at two ends of the wheel body, and one rolling bearing is clamped between each step hole and the corresponding retainer ring.
The invention provides a chain supporting wheel.A first framework sealing structure comprises a first reinforcing framework, a first sealing part, a first sealing lip and a second sealing lip; the first reinforcing framework is connected to the inner periphery of the wheel body; the first sealing part is arranged on the surface of the first reinforcing framework; the first sealing lip extends out from the first sealing part and is in rotary abutting joint with the second framework sealing structure in the radial direction of the wheel body; the second sealing lip extends out from the first sealing part and is in rotary abutting joint with the second framework sealing structure in the axial direction of the wheel body; the first sealing lip, the second sealing lip and the second framework sealing structure jointly enclose an oil cavity.
According to the chain supporting wheel provided by the invention, the second framework sealing structure comprises a second reinforcing framework and a second sealing part; the second reinforcing framework comprises a first framework body and a second framework body, the first framework body is sleeved on the periphery of the wheel shaft, one end of the second framework body is connected with one end of the first framework body, which is far away from the rolling bearing, and the other end of the second framework body extends in the direction far away from the wheel shaft; the first sealing lip is in rotary butt joint with the first framework body, and the second sealing lip is in rotary butt joint with the second framework body; the second sealing portion is disposed on an outer surface of the second reinforcing frame.
The first sealing lips are at least two, at least one first sealing lip extends towards the rolling bearing, an annular spring groove is formed in one side of each first sealing lip, which is back to the wheel axle, and the first framework sealing structure further comprises a self-tightening spring sleeved in the spring groove; at least one first sealing lip extends away from the rolling bearing; at least two oil cavities are enclosed among the first sealing lip, the second sealing lip, the first framework body and the second framework body.
The invention also provides engineering machinery which comprises the crawler chassis and the chain supporting wheel, wherein connecting holes are formed in two ends of a wheel shaft of the chain supporting wheel, and the connecting holes are connected with the crawler chassis through fasteners.
The invention has the following advantages:
1. the invention provides a chain supporting wheel, which comprises a wheel shaft, a wheel body, a rolling bearing, a first framework sealing structure and a second framework sealing structure, wherein the wheel body is sleeved outside the wheel shaft; the rolling bearing is arranged between the wheel shaft and the wheel body; the first framework sealing structure is sleeved on the periphery of the wheel shaft and is positioned outside the rolling bearing; the second framework sealing structure is arranged on the inner periphery of the wheel body and located outside the rolling bearing, and the second framework sealing structure is in rotary butt joint with the first framework sealing structure and forms at least one oil cavity suitable for containing lubricating oil with the first framework sealing structure.
First skeleton seal structure and second skeleton seal structure all set up in antifriction bearing's outside, prevent that impurity such as earth dust from getting into the support sprocket, and sealing performance is good. First skeleton seal structure and the rotatory butt of second skeleton seal structure, it is sealed effectual, during impurity such as earth or dust can not enter into the support sprocket in the rotatory process, cause the damage to antifriction bearing isotructure. And an oil cavity is formed between the first framework sealing structure and the second framework sealing structure, the first framework sealing structure and the second framework sealing structure are lubricated by lubricating oil, and the first framework sealing structure and the second framework sealing structure cannot be damaged in the rotating process.
In addition, the wheel shaft and the wheel body are rotatably connected through the rolling bearing, so that the starting torque of the supporting chain wheel with the shaft sleeve is reduced, and the phenomenon of clamping stagnation and non-rotation is prevented.
2. The invention relates to a supporting chain wheel, wherein a rolling bearing is a self-lubricating bearing. In the invention, the self-lubricating bearing replaces a shaft sleeve and a floating oil seal, lubricating oil does not need to be additionally injected into the chain supporting wheel, and oil leakage fault caused by sealing failure is avoided.
3. According to the chain supporting wheel, the first framework sealing structure is in interference fit with the inner periphery of the wheel body. Need not extra connection structure, just can be with first skeleton seal structure fixed connection at the internal periphery of wheel body, simple structure, and connect firmly.
4. According to the chain supporting wheel, the second framework sealing structure is in interference fit with the periphery of the wheel shaft. Need not extra connection structure, just can be with the periphery of second skeleton seal structure fixed connection at the shaft, simple structure, and connect firmly.
5. The chain supporting wheel further comprises a retainer ring, a step hole is formed in the inner periphery of the wheel body, a mounting groove is formed in the outer periphery of the wheel shaft, one end of the retainer ring is arranged in the mounting groove, the other end of the retainer ring protrudes out of the outer periphery of the wheel shaft, and a rolling bearing abuts between the step hole and the retainer ring. The retainer ring is matched with the step hole to limit and fix the rolling bearing. Prevent the retainer ring rolling bearing from generating axial float.
6. The chain supporting wheel provided by the invention is provided with two rolling bearings, two retainer rings, two mounting grooves and two step holes, wherein the two step holes are respectively arranged at two ends of the wheel body, and one rolling bearing is clamped between each step hole and the corresponding retainer ring.
Through two retaining rings, two mounting grooves and two step holes, with two antifriction bearing and wheel body spacing between two retaining rings, prevent that wheel body and antifriction bearing from taking place the axial float.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 shows a cross-sectional view of the carrier sprocket of the present invention;
FIG. 2 shows an enlarged view of section A of FIG. 1;
fig. 3 shows a schematic view of a first skeletal seal structure and a second skeletal seal structure of the present invention.
Description of reference numerals:
1. a wheel axle; 11. mounting grooves; 12. connecting holes;
2. a wheel body; 21. a stepped bore;
3. a rolling bearing;
4. a first framework sealing structure; 41. a first reinforcing cage; 42. a first seal portion; 43. a first seal lip; 431. a spring slot; 44. a second sealing lip; 45. a self-tightening spring;
5. a second framework sealing structure; 51. a second reinforcing cage; 52. a second seal portion;
6. an oil chamber;
7. and a retainer ring.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 3, the present embodiment discloses a carrier roller, which includes an axle 1, a roller body 2, a rolling bearing 3, a first skeleton sealing structure 4 and a second skeleton sealing structure 5, wherein the roller body 2 is sleeved outside the axle 1; the rolling bearing 3 is arranged between the wheel shaft 1 and the wheel body 2; the first framework sealing structure 4 is sleeved on the periphery of the wheel shaft 1 and is positioned outside the rolling bearing 3; the second framework sealing structure 5 is arranged on the inner periphery of the wheel body 2 and located outside the rolling bearing 3, and the second framework sealing structure 5 is in rotary butt joint with the first framework sealing structure 4 and forms at least one oil cavity 6 suitable for containing lubricating oil with the first framework sealing structure 4.
First skeleton seal structure 4 and second skeleton seal structure 5 all set up in antifriction bearing 3's outside, prevent that impurity such as earth dust from entering the support sprocket, and sealing performance is good. First skeleton seal structure 4 and the rotatory butt of second skeleton seal structure 5, it is sealed effectual, during impurity such as earth or dust can not enter into the support sprocket in the rotatory process, cause the damage to antifriction bearing 3 isotructures. And an oil cavity 6 is formed between the first framework sealing structure 4 and the second framework sealing structure 5, the first framework sealing structure 4 and the second framework sealing structure 5 are lubricated by lubricating oil, and the first framework sealing structure 4 and the second framework sealing structure 5 cannot be damaged in the rotating process.
In addition, the wheel shaft 1 and the wheel body 2 are rotatably connected through the rolling bearing 3, so that the starting torque of the chain supporting wheel with the shaft sleeve is reduced, and the phenomenon of clamping stagnation and non-rotation is prevented.
As an alternative embodiment, the chain wheel in this embodiment may only include the first skeleton sealing structure 4, which is fitted over the outer periphery of the wheel axle 1, is located outside the rolling bearing 3, rotatably abuts against the inner periphery of the wheel body 2, and forms at least one oil chamber 6 adapted to contain lubricating oil with the inner periphery of the wheel body 2.
In the chain wheel of the present embodiment, the rolling bearing 3 is a self-lubricating bearing. In the invention, the self-lubricating bearing replaces a shaft sleeve and a floating oil seal, lubricating oil does not need to be additionally injected into the chain supporting wheel, and oil leakage fault caused by sealing failure is avoided.
In the chain wheel carrier of the embodiment, the first framework sealing structure 4 is in interference fit with the inner periphery of the wheel body 2.
The first framework sealing structure 4 can be fixedly connected to the inner periphery of the wheel body 2 without an additional connecting structure, and the structure is simple and the connection is stable.
In the chain supporting wheel of the embodiment, the second framework sealing structure 5 is in interference fit with the periphery of the wheel shaft 1.
The second framework sealing structure 5 can be fixedly connected to the periphery of the wheel shaft 1 without an additional connecting structure, and the structure is simple and the connection is stable.
The chain supporting wheel further comprises a retainer ring 7, a step hole 21 is formed in the inner periphery of the wheel body 2, a mounting groove 11 is formed in the outer periphery of the wheel shaft 1, one end of the retainer ring 7 is arranged in the mounting groove 11, the other end of the retainer ring 7 protrudes out of the outer periphery of the wheel shaft 1, and the rolling bearing 3 abuts between the step hole 21 and the retainer ring 7. The retainer ring 7 is matched with the stepped hole 21 to limit and fix the rolling bearing 3. The retainer ring 7 prevents the rolling bearing 3 from axially moving.
As an alternative embodiment, the retaining rings 7 may have two sets, one set of retaining rings 7 being used to retain the rolling bearing 3 and the other set of retaining rings 7 being used to retain the second skeleton seal 5 and/or the second skeleton seal 5.
In the chain wheel carrier of the embodiment, the rolling bearings 3, the retainer rings 7, the mounting grooves 11 and the stepped holes 21 are all provided with two, the two stepped holes 21 are respectively arranged at two ends of the wheel body 2, and one rolling bearing 3 is clamped between each stepped hole 21 and the corresponding retainer ring 7.
Through two retaining rings 7, two mounting grooves 11 and two step holes 21, with two antifriction bearing 3 and wheel body 2 spacing between two retaining rings 7, prevent that wheel body 2 and antifriction bearing 3 from taking place the axial float.
In the chain wheel carrier of the present embodiment, the first frame sealing structure 4 includes a first reinforcing frame 41, a first sealing portion 42, a first sealing lip 43, and a second sealing lip 44; the first reinforcing frame 41 is connected to the inner periphery of the wheel body 2; the first seal portion 42 is provided on the surface of the first reinforcing skeleton 41; the first seal lip 43 extends from the first seal portion 42 and is rotationally abutted with the second skeleton seal structure 5 in the radial direction of the wheel body 2; the second seal lip 44 extends from the first seal portion 42 and is in rotational abutment with the second skeleton seal structure 5 in the axial direction of the wheel body 2; the first seal lip 43, the second seal lip 44 and the second skeleton seal structure 5 together enclose an oil chamber 6.
The first seal portion 42 is made of an elastic material, and the first reinforcing frame 41 is made of a metal material, and the first reinforcing frame 41 serves to support the entire structure in a corresponding shape.
In a specific embodiment, the first reinforcing frame 41 includes a main body connected to the wheel body 2, and a first bending portion and a second bending portion bent from two ends of the main body in opposite directions, wherein the first sealing lip 43 and the second sealing lip 44 both extend from the first sealing portion 42 on the outer surface of the first bending portion, and the second bending portion is adapted to be limited in the groove on the end of the wheel body 2. Alternatively, the first reinforcing frame 41 includes only the body portion and the first bent portion described above.
In the present embodiment, the second skeleton sealing structure 5 includes the second reinforcing skeleton 51 and the second sealing portion 52; the second reinforcing framework 51 comprises a first framework body and a second framework body, the first framework body is sleeved on the periphery of the wheel shaft 1, one end of the second framework body is connected with one end of the first framework body, which is far away from the rolling bearing 3, and the other end of the second framework body extends in the direction far away from the wheel shaft 1; the first seal lip 43 is in rotational abutment with the first frame body, and the second seal lip 44 is in rotational abutment with the second frame body; the second seal portion 52 is provided on the outer surface of the second reinforcing frame 51. The second reinforcing frame 51 has an annular groove structure with an L-shaped cross section, and the outer surface of the second reinforcing frame 51 is the outer surface of the annular groove.
In this embodiment, the first sealing lips 43 have at least two, at least one first sealing lip 43 extends toward the rolling bearing 3, and an annular spring groove 431 is formed on one side of the first sealing lip 43 facing away from the wheel axle 1, and the first skeleton sealing structure 4 further includes a self-tightening spring 45 sleeved in the spring groove 431; the at least one first sealing lip 43 extends away from the rolling bearing 3; the first sealing lip 43, the second sealing lip 44, the first framework body and the second framework body enclose at least two oil chambers 6. The self-tightening spring 45 enhances the sealing effect of the first seal lip 43 with the first frame body. The self-tightening springs 45 are annular springs which are adjacent end to end.
In a preferred embodiment, the first sealing lip 43 has three, one extending towards the rolling bearing 3 and two extending away from the rolling bearing 3. The first seal lip 43, the second seal lip 44, and the first skeleton body and the second skeleton body enclose three oil chambers 6.
The embodiment also provides engineering machinery which comprises a crawler chassis and the chain supporting wheel, wherein connecting holes 12 are formed in two ends of the wheel shaft 1 of the chain supporting wheel, and the connecting holes 12 are connected with the crawler chassis through fasteners. In a preferred embodiment, the connection hole 12 is a threaded hole, and the fastening member is a fastening member such as a bolt or a screw. Both ends all are connected with track chassis in this embodiment, prevent that shaft 1 from crooked.
The working machine in this embodiment may be an excavator, a loader, a pump truck, or the like.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (10)

1. A carrier roller, comprising:
a wheel axle (1);
the wheel body (2) is sleeved outside the wheel shaft (1);
the rolling bearing (3) is arranged between the wheel shaft (1) and the wheel body (2);
the first framework sealing structure (4) is sleeved on the periphery of the wheel shaft (1) and is positioned outside the rolling bearing (3);
the second framework sealing structure (5) is arranged on the inner periphery of the wheel body (2) and located outside the rolling bearing (3), the second framework sealing structure (5) is in rotary butt joint with the first framework sealing structure (4), and at least one oil cavity (6) suitable for containing lubricating oil is formed between the first framework sealing structure (4).
2. The idler according to claim 1, characterised in that said rolling bearing (3) is a self-lubricating bearing.
3. The idler of claim 1, wherein said first skeletal sealing structure (4) is an interference fit with an inner periphery of said wheel body (2).
4. The idler of claim 1, wherein said second skeletal sealing structure (5) is an interference fit with the outer periphery of said axle (1).
5. The chain wheel according to any one of claims 1-4, further comprising a retainer ring (7), wherein a stepped hole (21) is formed in the inner periphery of the wheel body (2), a mounting groove (11) is formed in the outer periphery of the wheel shaft (1), one end of the retainer ring (7) is arranged in the mounting groove (11), the other end of the retainer ring (7) protrudes out of the outer periphery of the wheel shaft (1), and the rolling bearing (3) abuts between the stepped hole (21) and the retainer ring (7).
6. The carrier roller as claimed in claim 5, wherein the number of the rolling bearings (3), the retainer rings (7), the mounting groove (11) and the stepped holes (21) is two, the two stepped holes (21) are respectively arranged at two ends of the wheel body (2), and one rolling bearing (3) is clamped between each stepped hole (21) and the corresponding retainer ring (7).
7. The idler of any one of claims 1-4, 6 wherein said first skeletal sealing structure (4) comprises:
a first reinforcing frame (41) connected to the inner periphery of the wheel body (2);
a first seal portion (42) provided on a surface of the first reinforcing skeleton (41);
a first seal lip (43) extending from the first seal portion (42) and rotationally abutting against the second skeleton seal structure (5) in the radial direction of the wheel body (2);
a second sealing lip (44); the first sealing part (42) extends out and is in rotary contact with the second framework sealing structure (5) in the axial direction of the wheel body (2);
the first sealing lip (43), the second sealing lip (44) and the second framework sealing structure (5) jointly enclose the oil chamber (6).
8. The carrier roller as claimed in claim 7, wherein the second skeleton sealing structure (5) comprises:
the second reinforcing framework (51) comprises a first framework body and a second framework body, the first framework body is sleeved on the periphery of the wheel shaft (1), one end of the second framework body is connected with one end, far away from the rolling bearing (3), of the first framework body, and the other end of the second framework body extends in the direction far away from the wheel shaft (1); the first sealing lip (43) is in rotational abutment with the first framework body, and the second sealing lip (44) is in rotational abutment with the second framework body;
and a second seal portion (52) provided on an outer surface of the second reinforcing frame (51).
9. The carrier roller as claimed in claim 8, characterized in that the first sealing lips (43) have at least two, at least one first sealing lip (43) extending towards the rolling bearing (3) and the first sealing lip (43) being provided with an annular spring groove (431) on the side facing away from the wheel axle (1), the first skeleton sealing structure (4) further comprising a self-tightening spring which is fitted in the spring groove (431); at least one first sealing lip (43) extends away from the rolling bearing (3); the first sealing lip (43), the second sealing lip (44), the first framework body and the second framework body enclose at least two oil cavities (6).
10. A working machine, characterized in that it comprises a track chassis and a chain carrying wheel according to any one of claims 1-9, the wheel axle (1) of which is provided with attachment holes (12) at both ends, the attachment holes (12) being connected to the track chassis by means of fasteners.
CN202110898562.2A 2021-08-05 2021-08-05 Supporting chain wheel and engineering machinery Pending CN113415351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110898562.2A CN113415351A (en) 2021-08-05 2021-08-05 Supporting chain wheel and engineering machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110898562.2A CN113415351A (en) 2021-08-05 2021-08-05 Supporting chain wheel and engineering machinery

Publications (1)

Publication Number Publication Date
CN113415351A true CN113415351A (en) 2021-09-21

Family

ID=77719780

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110898562.2A Pending CN113415351A (en) 2021-08-05 2021-08-05 Supporting chain wheel and engineering machinery

Country Status (1)

Country Link
CN (1) CN113415351A (en)

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