Conical bearing for gearbox integrated hydraulic motor

Abstract

The utility model provides a conical bearing for a gearbox integrated hydraulic motor, and relates to the technical field of bearings, the conical bearing is characterized in that an outer oil injection hole communicated with a raceway surface of an outer ring is formed in the front end surface of the outer ring, and a sealing groove coaxial with the outer oil injection hole is formed in the position opposite to the outer oil injection hole in the front end surface of the outer ring; the front end face of the inner ring is provided with an inner side oil injection hole communicated with the raceway face of the inner ring, a sealing groove coaxial with the inner side oil injection hole is also formed in the position, opposite to the inner side oil injection hole, of the front end face of the inner ring, and a stable connecting structure is formed between the sealing plug and the sealing groove through limiting insertion matching of a limiting insertion column and a limiting insertion hole. Under the condition of no external force operation, the sealing plug does not have a self-separation phenomenon, the sealing effect can be reliably ensured, external dust and other impurities are effectively prevented from entering the bearing, and the problem that a thread type or direct insertion type sealing plug sealing structure commonly adopted by an existing bearing with an oil injection hole is prone to loosening and separation is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing technical field, especially cone bearing for gearbox integrated hydraulic motor. BACKGROUND

[0002] In the field of modern mechanical transmission, the cone bearing for gearbox integrated hydraulic motor is widely used, and its performance directly affects the operation efficiency and reliability of the equipment.

[0003] With the continuous development of industrial technology, higher requirements are put forward for the sealing performance and maintenance convenience of the cone bearing for gearbox integrated hydraulic motor. In combination with the requirements, an oil injection hole is formed in the outer ring or the inner ring of the bearing, so that the lubricating oil adding operation is simple and efficient, which is beneficial to the daily maintenance of the bearing. However, these traditional sealing methods have obvious defects. The threaded seal plug is easy to loosen due to vibration and other factors during long-term use, which causes the seal plug to separate, so that dust, impurities and other external factors easily enter the bearing, pollute the key components such as the raceway surface of the bearing, affect the normal operation of the bearing, and shorten the service life of the bearing; the directly inserted seal plug is also easy to fall off without external force, which cannot reliably guarantee the sealing effect and cannot meet the strict requirements of the bearing sealing under complex working conditions. CONTENT OF THE UTILITY MODEL

[0004] The utility model relates to cone bearing for gearbox integrated hydraulic motor, solve the problem that the threaded seal plug sealing structure or directly inserted seal plug sealing structure commonly used in the bearing with the oil injection hole is easy to loosen and separate.

[0005] The utility model provides a cone bearing for gearbox integrated hydraulic motor, which comprises an outer ring, an inner ring, a retainer and a plurality of rollers. The outer ring has a raceway surface for cooperating with the rollers and is in a ring structure. The inner ring has a raceway surface for cooperating with the rollers and is in a ring structure. The retainer is arranged between the outer ring and the inner ring. The rollers are in a conical structure, are separated by the retainer and are accommodated between the raceways of the outer ring and the inner ring. An outer side oil injection hole is formed in the front end surface of the outer ring and is in communication with the raceway surface of the outer ring. In the radial section of the outer ring, the axis of the outer side oil injection hole is located at the center area of the front end surface of the outer ring at one end and at the center area of the raceway surface of the outer ring at the other end. A sealing groove is formed in the outer side oil injection hole of the front end surface of the outer ring and is coaxial with the outer side oil injection hole. An inner side oil injection hole is formed in the front end surface of the inner ring and is in communication with the raceway surface of the inner ring. In the radial section of the inner ring, the axis of the inner side oil injection hole is located at the center area of the front end surface of the inner ring at one end and at the center area of the raceway surface of the inner ring at the other end. A sealing groove is also formed in the inner side oil injection hole of the front end surface of the inner ring and is coaxial with the inner side oil injection hole.

[0006] Further, the sealing groove is a circular groove structure, the inner end bottom surface of the sealing groove is a semicircular structure, the inner circumferential surface of the two sealing grooves is annular array, and two spring receiving grooves in a circular groove structure are formed; four spring receiving grooves are inserted with a limiting plug in a circular column structure, the diameter of the limiting plug is consistent with the diameter of the spring receiving groove, and the limiting plug and the inner end plane of the spring receiving groove are fixedly connected through a return spring.

[0007] Further, one end of the limiting plug towards the opening end of the spring receiving groove is a semicircular structure; in the natural state of the return spring, one half of the limiting plug is located outside the spring receiving groove.

[0008] Further, the two sealing grooves are inserted with a sealing plug in a circular block structure, the diameter of the sealing plug is consistent with the diameter of the sealing groove, and the bottom end of the sealing plug is a semicircular structure; a matching insertion slot in a circular groove structure is formed at the top end surface of the sealing plug, and the inner circumferential surface of the matching insertion slot is annular array and is provided with two limiting insertion holes penetrating the outer circumferential surface of the sealing plug.

[0009] Further, when the limiting insertion hole and the spring receiving groove are coaxial, the bottom end arc surface of the sealing plug is closely attached to the bottom end arc surface of the sealing groove, and at this time, one half of the limiting plug outside the spring receiving groove is inserted into the limiting insertion hole; the diameter of the limiting insertion hole is consistent with the diameter of the limiting plug; and the U-shaped steel plate is further provided with a pressing plate bent at 90 degrees at both ends; when the two pressing plates are inserted into the two limiting insertion holes, the pressing plate is in contact with the limiting plug at this time, one half of the limiting plug outside the spring receiving groove is pressed into the spring receiving groove, and the return spring is in a compressed state.

[0010] The utility model provides a tapered bearing for gearbox integrated hydraulic motor has the following beneficial effects:

[0011] The utility model discloses a limiting plug and limiting insertion hole limiting insertion cooperation, so that the sealing plug and the sealing groove form a stable connection structure, compared with the traditional thread type, direct insertion type sealing plug, in the absence of external force operation, the sealing plug does not separate phenomenon, can reliably ensure the sealing effect, effectively avoid the impurities such as dust of outside into the bearing interior, protect the key components such as the raceway surface of bearing, prolong the service life of bearing.

[0012] The utility model discloses simple and convenient sealing installation process, through the pressing contact of sealing plug bottom end arc surface and spacing plug column arc surface, can temporarily press into the spring storage groove the spacing plug column partial structure that protruded in the spring storage groove, ensure that the insertion of sealing plug is not hindered, and when sealing plug inserts in place, through the cooperation of pressing plate and spacing plug hole operation, can drive sealing plug along sealing groove rotation, in order to cooperate with the alignment spring storage groove and spacing plug column position, thereby benefitting spacing plug column spacing insertion spacing plug hole, thereby realize the reliable spacing fixing of sealing plug position.

[0013] The utility model discloses convenient sealing plug dismounting is convenient for maintenance, when adding lubricating oil, only need through the pressing plate pressing spacing plug column, can press into the spring storage groove the spacing plug column partial structure, release the spacing fixing of sealing plug, easily pull out sealing plug from sealing groove, expose sealing groove part, directly add lubricating oil conveniently. And lubricating oil can flow into outside oil hole or inside oil hole along sealing groove bottom end arc surface, and then flow into raceway surface, make lubricating oil adding operation simple and efficient, benefit the routine maintenance of bearing. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, below will to the drawing of embodiment simple introduction.

[0015] The drawings in the following description only relate to some embodiments of the utility model, and not to the limitation of the utility model.

[0016] In the drawings:

[0017] Figure 1 The structure schematic diagram of the application is shown in the split state;

[0018] Figure 2 The front end shaft structure schematic diagram of the application is shown;

[0019] Figure 3 The structure schematic diagram of the application is shown in Figure 2 The local amplification structure schematic diagram of the application is shown in A;

[0020] Figure 4 The structure schematic diagram of the application is shown in Figure 3 The sealing plug split state structure schematic diagram of the application is shown;

[0021] Figure 5 The section structure schematic diagram of the application is shown;

[0022] Figure 6 The local amplification structure schematic diagram of the application is shown in B; Figure 5

[0023] Figure 7 The structure schematic diagram of the application is shown in Figure 6 ​Structure schematic diagram in state of removing sealing plug, limiting plug post and return spring;

[0024] Figure 8 The application is shown Figure 5 Structure schematic diagram in state of removing sealing plug, limiting plug post and return spring;

[0025] Figure 9 The application is shown Figure 8 Structure schematic diagram in state of removing sealing plug, limiting plug post and return spring;

[0026] Figure 10 The application is shown Figure 6 Structure schematic diagram in state of removing sealing plug, limiting plug post and return spring;

[0027] List of reference signs

[0028] 1, outer ring; 101, outer oil injection hole;

[0029] 2, retainer;

[0030] 3, roller;

[0031] 4, inner ring; 401, inner oil injection hole;

[0032] 5, sealing plug; 501, matching plug groove; 502, limiting plug hole;

[0033] 6, U-shaped steel plate; 601, pressing plate;

[0034] 01, sealing groove; 02, limiting plug post; 03, return spring; 04, spring receiving groove. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the practical embodiment clearer, the technical scheme of the practical embodiment will be described clearly and completely below in combination with the drawings of the practical embodiment. Obviously, the described embodiment is part of the embodiments of the practical, rather than all the embodiments. Based on the described embodiments of the practical, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the practical.

[0036] Embodiment: please refer to Figures 1 to 10 :

[0037] The utility model provides a gearbox integrated hydraulic motor uses conical bearing, include: the outer ring 1, the outer ring 1 presents annular structure, has the raceway surface cooperation with the roller 3, the inner ring 4 presents annular structure, has the raceway surface cooperation with the roller 3, is opposite to the outer ring 1 setting, the retainer 2 is set between the outer ring 1 and the inner ring 4, the roller 3 presents conical structure, its quantity is multiple, is separated and is contained between the raceway of the outer ring 1 and the inner ring 4 by the retainer 2, the outer ring 1 front end surface is provided with one outside oil hole 101 that is linked with its raceway surface, on the radial section along the outer ring 1, the axis position of outside oil hole 101, one end is located in the central region of the outer ring 1 front end surface, the other end is located in the central region of its raceway surface, through the position of outside oil hole 101 provided, can make lubricating oil when injecting, can accurately reach the contact area of raceway surface and roller 3, ensure that the whole raceway surface can be lubricated well, thereby make the stress of bearing more uniform in the operation process, reduce vibration and noise, relative to the outside oil hole 101 part of the outer ring 1 front end surface is provided with one sealing groove 01 that is coaxial with it, the inner ring 4 front end surface is provided with one inside oil hole 401 that is linked with its raceway surface, on the radial section along the inner ring 4, the axis position of inside oil hole 401, one end is located in the central region of the inner ring 4 front end surface, the other end is located in the central region of its raceway surface, through the position of inside oil hole 401 provided, can also make lubricating oil when injecting, can accurately reach the contact area of raceway surface and roller 3, ensure that the whole raceway surface can be lubricated well, thereby make the stress of bearing more uniform in the operation process, reduce vibration and noise, relative to the inside oil hole 401 part of the inner ring 4 front end surface also is provided with one sealing groove 01 that is coaxial with it.

[0038] In the embodiment, the sealing groove 01 is a circular groove structure, and the inner end bottom surface of the sealing groove 01 is a semicircular structure; the inner circumferential surfaces of the two sealing grooves 01 are each annularly arrayed and have two spring receiving grooves 04 that are circular groove structures; the four spring receiving grooves 04 each have a limiting insertion column 02 that is a circular column structure and is fixedly connected to the inner end surface of the spring receiving groove 04 by a return spring 03.

[0039] In the embodiment, one end of the limiting insertion column 02 towards the opening end of the spring receiving groove 04 is a semicircular structure; in a natural state of the return spring 03, one half of the limiting insertion column 02 is located outside the spring receiving groove 04.

[0040] In the embodiment, a sealing plug 5 in a circular block structure is inserted into the two sealing grooves 01, the diameter of the sealing plug 5 is consistent with the diameter of the sealing groove 01, the bottom end of the sealing plug 5 is in a semicircular structure, and a matching insertion groove 501 in a circular groove structure is arranged at the top end surface of the sealing plug 5, and the inner circumferential surface of the matching insertion groove 501 is arranged with two limit insertion holes 502 penetrating the outer circumferential surface of the sealing plug 5 in an annular array.

[0041] In the embodiment, when the limit insertion hole 502 and the spring receiving groove 04 are coaxial, the bottom end arc surface of the sealing plug 5 is tightly attached to the bottom end arc surface of the sealing groove 01, and at this time, one half of the limit insertion column 02 outside the spring receiving groove 04 is inserted into the limit insertion hole 502; the diameter of the limit insertion hole 502 is consistent with the diameter of the limit insertion column 02; and the U-shaped steel plate 6 is further included, and the U-shaped steel plate 6 is fixedly installed with two pressing plates 601 arranged at 90 degrees; when the two pressing plates 601 are inserted into the two limit insertion holes 502 respectively, the pressing plate 601 is in contact with the limit insertion column 02 at this time, and one half of the limit insertion column 02 outside the spring receiving groove 04 is pressed into the spring receiving groove 04, and the return spring 03 is in a compressed state.

[0042] Working principle of the embodiment:

[0043] The bearing is assembled as follows: first, the plurality of rollers 3 in a conical structure are placed in the corresponding positions of the retainer 2, so that the rollers 3 are separated by the retainer 2, ensuring that the rollers 3 are uniformly distributed and the relative positions are maintained, the retainer 2 with the rollers 3 is placed in the outer ring 1 in a ring structure, so that the rollers 3 are in contact with the raceway surface of the outer ring 1, then the inner ring 4 in a ring structure is arranged opposite to the outer ring 1 with the rollers 3 and the retainer 2, so that the raceway surface of the inner ring 4 is in contact with the rollers 3, thereby completing the assembly of the conical bearing;

[0044] The sealing plug 5 is installed as follows:

[0045] The bottom end of the sealing plug 5 is aligned with the sealing groove 01 and inserted, and because the bottom end of the sealing plug 5 is a semicircular structure, when the sealing plug 5 is inserted along the sealing groove 01, the bottom end arc surface of the sealing plug 5 will be in contact with the limiting plug column 02 located outside the spring receiving groove 04, and because the end of the limiting plug column 02 towards the opening end of the spring receiving groove 04 is a semicircular structure, the bottom end arc surface of the sealing plug 5 is in contact with the arc surface of the limiting plug column 02 by pressing, thereby pressing one half of the limiting plug column 02 located outside the spring receiving groove 04 into the inside of the spring receiving groove 04, so that the sealing plug 5 continues to be inserted inward along the sealing groove 01 until the bottom end arc surface of the sealing plug 5 tightly adheres to the bottom end arc surface of the sealing groove 01, then the worker can pinch the U-shaped steel plate 6 to reduce the distance between the two pressing plates 601, so that the two pressing plates 601 are inserted into the matching insertion slot 501, then the two pressing plates 601 are aligned with the two limiting insertion holes 502 respectively, then the U-shaped steel plate 6 is half loosened, so that the two pressing plates 601 are inserted into the two limiting insertion holes 502 respectively, at this time the U-shaped steel plate 6 is rotated to be in contact with the limiting insertion hole 502 by the pressing plate 601, thereby synchronously driving the sealing plug 5 to rotate along the sealing groove 01 until the limiting insertion hole 502 corresponds to the position of the spring receiving groove 04; When the limiting insertion hole 502 corresponds to the position of the spring receiving groove 04, the reset spring 03 in the compressed state quickly resets to push the limiting plug column 02 to move along the spring receiving groove 04, so that the limiting plug column 02 is inserted into the limiting insertion hole 502, at this time the worker can pinch the U-shaped steel plate 6 again to take out the pressing plate 601 from the matching insertion slot 501, and at this time the limiting plug column 02 and the limiting insertion hole 502 are limited and inserted to cooperate, realizing the limiting and fixing of the position of the sealing plug 5, so that the sealing plug 5 will not be separated from the sealing groove 01 without external force pressing the limiting plug column 02 out of the limiting insertion hole 502, ensuring the sealing effect;

[0046] The lubricating oil is added as follows:

[0047] The worker can pinch the U-shaped steel plate 6, thereby reducing the interval between the two pressing plates 601 inserted into the matching slot 501, and then aligning them with the two limiting insertion holes 502, and then releasing the U-shaped steel plate 6, so that the two pressing plates 601 are respectively inserted into the two limiting insertion holes 502 and simultaneously press against the limiting insertion columns 02 inserted in the two limiting insertion holes 502, and the half structure of the limiting insertion columns 02 located inside the limiting insertion holes 502 is pressed into the spring storage groove 04, thereby releasing the limiting and fixing of the sealing plug 5. At this time, the worker can pinch the U-shaped steel plate 6 and pull it outward, and through the limiting contact between the pressing plate 601 and the limiting insertion hole 502, the sealing plug 5 is synchronously pulled out of the sealing groove 01 to expose the sealing groove 01 part. At this time, the worker can directly add lubricating oil into the sealing groove 01. Because the bottom end of the sealing groove 01 is a semicircular structure, the lubricating oil added into the sealing groove 01 will flow into the outer oil injection hole 101 or the inner oil injection hole 401 along the bottom end arc surface, so that the lubricating oil flows into the raceway surface through the outer oil injection hole 101 or the inner oil injection hole 401, to realize the lubricating oil adding operation.

[0048] In this article, the following points need attention:

[0049] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the usual design.

[0050] 2. In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0051] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present disclosure, which should be covered within the protection scope of the present disclosure.

Claims

1. A tapered bearing for gearbox integrated hydraulic motor, comprising an outer ring (1) in ring structure, having a raceway surface matched with a roller (3); an inner ring (4) in ring structure, having a raceway surface matched with the roller (3), oppositely arranged with the outer ring (1); a retainer (2) arranged between the outer ring (1) and the inner ring (4); a plurality of rollers (3) in tapered structure, separated and accommodated between the raceways of the outer ring (1) and the inner ring (4) by the retainer (2), characterized in that, The outer ring (1) front end surface is provided with an outer side oil injection hole (101) communicated with the raceway surface, and in the radial section of the outer ring (1), the axis of the outer side oil injection hole (101) is located at the center area of the front end surface of the outer ring (1) at one end and at the center area of the raceway surface at the other end; a sealing groove (01) coaxial with the outer side oil injection hole (101) is provided on the front end surface of the outer ring (1); the inner ring (4) front end surface is provided with an inner side oil injection hole (401) communicated with the raceway surface, and in the radial section of the inner ring (4), the axis of the inner side oil injection hole (401) is located at the center area of the front end surface of the inner ring (4) at one end and at the center area of the raceway surface at the other end; a sealing groove (01) coaxial with the inner side oil injection hole (401) is also provided on the front end surface of the inner ring (4).

2. The tapered bearing for gearbox integrated hydraulic motor according to claim 1, characterized in that, The sealing groove (01) is a circular groove structure, and the inner end bottom surface of the sealing groove (01) is a semicircular structure; the inner circumferential surface of the two sealing grooves (01) is annularly arrayed and provided with two spring receiving grooves (04) in a circular groove structure; the four spring receiving grooves (04) are each inserted with a limiting insertion column (02) in a circular column structure, the diameter of the limiting insertion column (02) is consistent with the diameter of the spring receiving groove (04), and the limiting insertion column (02) and the inner end plane of the spring receiving groove (04) are fixedly connected through a return spring (03).

3. The tapered bearing for gearbox integrated hydraulic motor according to claim 2, characterized in that, The limiting insertion column (02) is semicircular at one end facing the opening end of the spring receiving groove (04); in the natural state of the return spring (03), one half of the limiting insertion column (02) is located outside the spring receiving groove (04).

4. The tapered bearing for gearbox integrated hydraulic motor according to claim 3, characterized in that, The two sealing grooves (01) are each inserted with a sealing plug (5) in a circular block structure, the diameter of the sealing plug (5) is consistent with the diameter of the sealing groove (01), and the bottom end of the sealing plug (5) is semicircular; a matching insertion slot (501) in a circular groove structure is provided at the axial position of the top end surface of the sealing plug (5), and the inner circumferential surface of the matching insertion slot (501) is annularly arrayed and provided with two limiting insertion holes (502) penetrating through the outer circumferential surface of the sealing plug (5).

5. The tapered bearing for gearbox integrated hydraulic motor according to claim 4, characterized in that, When the limiting insertion hole (502) and the spring receiving groove (04) are coaxial, the bottom end arc surface of the sealing plug (5) is closely attached to the bottom end arc surface of the sealing groove (01), and at this time, one half of the limiting insertion column (02) located outside the spring receiving groove (04) is inserted into the limiting insertion hole (502); the diameter of the limiting insertion hole (502) is consistent with the diameter of the limiting insertion column (02); further comprising a U-shaped steel plate (6), both ends of the U-shaped steel plate (6) are fixedly installed with a pressing plate (601) bent at ninety degrees; when the two pressing plates (601) are inserted into the two limiting insertion holes (502) respectively, at this time, the pressing plate (601) is in contact with the limiting insertion column (02), and one half of the limiting insertion column (02) located outside the spring receiving groove (04) is pressed into the spring receiving groove (04), and the return spring (03) is in a compressed state.

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