Slewing bearing structure

Abstract

The utility model discloses a slewing bearing structure which comprises a balance box body and a slewing bearing structure body, and an axle shell body is installed on the right side of the balance box body. The rotary supporting structure body is installed between a balance box body and an axle shell body, the rotary supporting structure body is formed by combining an outer ring, an inner ring, a first Glyd sealing ring, a steel ball, a second Glyd sealing ring and a combined seal, and the inner ring is rotationally connected in the outer ring through the steel ball. The inner ring and the second Glyd sealing ring are distributed in bilateral symmetry about the vertical central axis of the steel ball; the combined seal is formed by combining an O-shaped ring and a supporting ring, and the O-shaped ring and the supporting ring are connected through a clamping groove. And a clamping groove in the right side of the balance box body is connected with a rotary supporting structure body. The slewing bearing is compact in structural design, is independent and integrated, can be integrally mounted in an assembly, and has the characteristics of easiness in assembly and maintenance, high bearing capacity, long service life, reliability in sealing and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of slewing bearings, in particular to a slewing bearing structure. Background Art

[0002] As the main component of the vehicle chassis transmission system, the rear axle of the grader has the main function of increasing the torque transmitted by the engine, further distributing the torque to the left and right drive wheels, and making the wheels on both sides have a differential function. At the same time, the rear axle balance box also has a swing function to adapt to bumpy roads such as ups and downs.

[0003] At present, the balance box of the rear axle of the grader on the market realizes the swing function through the support shaft sleeve structure. There is sliding friction between the balance box support shaft sleeve and the bridge housing, the local load is easy to wear, and the service life is short, which further leads to oil leakage and damage to the swing sleeve seat. Once damaged, it is complicated to disassemble and replace, which brings inconvenience to maintenance. Therefore, we propose a slewing support structure to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a slewing support structure to solve the problems in the background art that the current slewing support structure is inconvenient to be installed as a whole in a component, the assembly and maintenance are cumbersome, the service life is short, and the sealing performance is poor.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slewing support structure, comprising:

[0006] A balance box, with a bridge housing installed on the right side of the balance box;

[0007] Also includes:

[0008] A slewing support structure body, which is installed between the balancing box and the bridge housing, and is composed of an outer ring, an inner ring, a first Gly seal ring, a steel ball, a second Gly seal ring and a combined seal. The inner ring is rotatably connected inside the outer ring through the steel ball, and the inner ring and the second Gly seal ring are symmetrically distributed about the vertical center axis of the steel ball.

[0009] The combined seal is composed of an O-ring and a support ring, and the O-ring and the support ring are connected by a groove.

[0010] Preferably, the right side slot of the balancing box is connected to the slewing support structure body, and a first bolt is provided at the connection between the balancing box and the slewing support structure body, the right side slot of the slewing support structure body is connected to the bridge housing, and a second bolt is provided at the connection between the slewing support structure body and the bridge housing.

[0011] Preferably, the first bolts are installed inside the balancing box and the outer ring, and the second bolts are installed inside the inner ring and the bridge housing.

[0012] Preferably, the inner groove of the outer ring is connected to a steel ball, and the inner outer groove of the steel ball is connected to the inner ring, and the steel ball is rotatably connected inside both the outer ring and the inner ring.

[0013] Preferably, a first Gly seal ring is installed at the outer right end of the inner ring, and a second Gly seal ring is installed at the outer left end of the inner ring, and a combined seal is arranged on the left side of the inner ring.

[0014] Preferably, the left inner groove of the inner ring is connected with an O-ring, and the outer side of the O-ring is tightly fitted with a support ring, the longitudinal section of the support ring is an "I"-shaped structure, and the left side of the support ring is tightly fitted with the balance box.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the slewing bearing structure is compactly designed, independent and integrated, can be installed in a component as a whole, and has the characteristics of easy assembly and maintenance, high bearing capacity, long service life and reliable sealing;

[0016] 1. An outer ring, an inner ring and a steel ball are provided. The outer ring is fastened to the balance box through a first bolt, and the inner ring is fastened to the bridge housing through a second bolt. The steel ball is placed between the outer ring and the inner ring raceway. The design is compact, independent and integrated, and can be installed in the assembly as a whole.

[0017] 2. A first Gly seal ring and a second Gly seal ring are provided. The first Gly seal ring is installed on the outside of the outer ring and inner ring combination channel, and the second Gly seal ring is installed on the inside of the outer ring and inner ring combination channel, which is easy to assemble and maintain and has high bearing capacity;

[0018] 3. It is equipped with and is installed on the inner end face of the inner ring through a combined seal. The longitudinal section of the support ring is an "I" shaped structure, which has a long service life and reliable sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the front cross-sectional structure of the rotary support structure body of the utility model;

[0021] Figure 3 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0022] Figure 4 It is a schematic diagram of the overall structure of the combined seal of the utility model.

[0023] In the figure: 1. Balance box; 2. Rotary support structure body; 2-1. Outer ring; 2-2. Inner ring; 2-3. First Gly seal ring; 2-4. Steel ball; 2-5. Second Gly seal ring; 2-6. Combined seal; 2-6-1. O-ring; 2-6-2. Support ring; 3. Bridge housing; 4. First bolt; 5. Second bolt. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 The utility model provides a technical solution: a slewing support structure, including: a balancing box 1, a slewing support structure body 2, an outer ring 2-1, an inner ring 2-2, a first Gley sealing ring 2-3, a steel ball 2-4, a second Gley sealing ring 2-5, a combined seal 2-6, an O-ring 2-6-1, a support ring 2-6-2, a bridge housing 3, a first bolt 4 and a second bolt 5;

[0026] First, as attached Figure 1 and attached Figure 2 As shown in FIG. 1 , the slewing support structure body 2 is installed between the balancing box 1 and the bridge housing 3. Figure 1 , Attachment Figure 2 and attached Figure 3 As shown in, the inner hole of the outer ring 2-1 and the outer shaft of the inner ring 2-2 are both processed with spherical raceways, and the spherical raceways are quenched and hardened to improve the bearing capacity. 58 steel balls 2-4 together form a connecting component, and the steel balls 2-4 are placed between the outer ring 2-1 and the inner ring 2-2 raceways to make the three fit together. The steel balls 2-4 are all quenched and hardened to improve the bearing capacity. The first Gley seal ring 2-3 is installed on the outer side of the combined ring of the outer ring 2-1 and the inner ring 2-2 to prevent dust and prevent the built-in grease from sealing. The second Gley seal ring 2-5 is designed to be installed on the inner side of the combined ring of the outer ring 2-1 and the inner ring 2-2 to prevent the hydraulic oil in the balance box 1 from entering the raceway and sealing the built-in grease of the support;

[0027] The outer ring 2-1 is connected and fastened to the balance housing 1 as a whole through the first bolt 4, and the inner ring 2-2 is connected and fastened to the bridge housing 3 as a whole through the second bolt 5. The outer ring 2-1 and the inner ring 2-2 form a rolling body through the steel ball 2-4 to achieve the circumferential swing of the balance housing 1 relative to the bridge housing 3. The first Gley sealing ring 2-3 and the second Gley sealing ring 2-5 can ensure that the grease used to lubricate the steel ball 2-4 does not leak out, and play a sealing role;

[0028] As attached Figure 3 and attached Figure 4 As shown in the figure, the combined seal 2-6 is installed on the inner end face of the inner ring 2-2, which plays a role in blocking the hydraulic oil in the balance box 1 from entering the slewing support structure body 2. The outer end face of the support ring 2-6-2 is a double-ring structure, which increases the contact area with the end face of the balance box 1, reduces local pressure, avoids early wear of the sealing surface, and extends the service life.

[0029] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the records in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A slewing support structure, comprising: A balancing box (1), wherein a bridge housing (3) is installed on the right side of the balancing box (1); It is characterized by further comprising: A slewing support structure body (2), the slewing support structure body (2) being installed between a balancing box (1) and a bridge housing (3), and the slewing support structure body (2) being composed of an outer ring (2-1), an inner ring (2-2), a first Gly seal ring (2-3), a steel ball (2-4), a second Gly seal ring (2-5) and a combined seal (2-6), the inner ring (2-2) being rotatably connected inside the outer ring (2-1) via the steel ball (2-4), and the inner ring (2-2) and the second Gly seal ring (2-5) being symmetrically distributed about the vertical center axis of the steel ball (2-4); The combined seal (2-6) is composed of an O-ring (2-6-1) and a support ring (2-6-2), and the O-ring (2-6-1) and the support ring (2-6-2) are connected by a slot.

2. A slewing support structure according to claim 1, characterized in that: The right side slot of the balancing box (1) is connected to a slewing support structure body (2), and a first bolt (4) is provided at the connection between the balancing box (1) and the slewing support structure body (2); the right side slot of the slewing support structure body (2) is connected to a bridge housing (3), and a second bolt (5) is provided at the connection between the slewing support structure body (2) and the bridge housing (3).

3. A slewing support structure according to claim 2, characterized in that: The first bolt (4) is installed inside the balancing box (1) and the outer ring (2-1), and the second bolt (5) is installed inside the inner ring (2-2) and the bridge housing (3).

4. A slewing support structure according to claim 1, characterized in that: The inner groove of the outer ring (2-1) is connected to a steel ball (2-4), and the inner outer groove of the steel ball (2-4) is connected to the inner ring (2-2), and the steel ball (2-4) is rotatably connected inside both the outer ring (2-1) and the inner ring (2-2).

5. A slewing support structure according to claim 4, characterized in that: A first Gly seal ring (2-3) is installed at the outer right end of the inner ring (2-2), and a second Gly seal ring (2-5) is installed at the outer left end of the inner ring (2-2), and a combined seal (2-6) is arranged on the left side of the inner ring (2-2).

6. A slewing support structure according to claim 4, characterized in that: The left inner groove of the inner ring (2-2) is connected to an O-ring (2-6-1), and the outer side of the O-ring (2-6-1) is tightly fitted with a support ring (2-6-2), the longitudinal section of the support ring (2-6-2) is an "I"-shaped structure, and the left side of the support ring (2-6-2) is tightly fitted with the balance box (1).

Images