Differential bearing seat of mine truck

Abstract

The utility model discloses a differential bearing seat of a mine truck. The differential bearing seat comprises a main speed reducer shell, a first bearing gland, a second bearing gland, a positioning sleeve and a bolt, a first bearing seat and a second bearing seat are arranged at the top of the main reducer shell, two ends of a first bearing gland are connected to the top of the first bearing seat through bolts, and two ends of a second bearing gland are connected to the top of the second bearing seat through bolts; the positioning sleeves are used for positioning and are arranged at the connecting position of the first bearing gland and the first bearing seat and the connecting position of the second bearing gland and the second bearing seat. When a differential bearing seat hole suddenly bears a large load, correct positioning of the bearing seat and the bearing gland can be guaranteed, and the service life of a bearing, a main speed reducer and a differential is guaranteed.

Description

Technical Field

[0001] The utility model relates to a mining dump truck, in particular to a differential bearing seat of a mining truck. Background Art

[0002] Mining vehicles are important transportation equipment for open-pit mining. The main reducer and differential are the main components for transmitting driving force. They bear large alternating loads during use. The differential is usually supported by bearings at both ends and installed on the housing of the main reducer.

[0003] Considering manufacturing processability, the differential's bearing seat adopts a split structure, consisting of a bearing seat mounted on the final drive housing and a bearing gland that forms the bearing seat bore. The conventional machining method involves first rough machining the bearing seat and gland on the final drive housing, then bolting them together and finishing them until they meet the bearing installation requirements.

[0004] The existing technology realizes the axial and radial positioning of the bearing cover by the tightening torque of the bolts, but due to the poor lateral rigidity of the bolts themselves and the clearance fit between the bearing cover and the bolts; the disadvantage of the existing technology is that the radial positioning ability of the bolts is poor, and when the bearing seat hole is suddenly subjected to a large load, it cannot reliably ensure the correct positioning of the bearing cover, which easily causes the bearing seat and the bearing cover to be misaligned, and the bearing positioning is incorrect, thereby affecting the service life of the main reducer and the differential; during later maintenance, due to the poor radial positioning ability of the bolts, the above problems will also occur, and the service life of other components will also be affected. Utility Model Content

[0005] The purpose of the utility model is to provide a differential bearing seat for a mining vehicle, which can ensure the correct positioning of the bearing seat and the bearing cover when the differential bearing seat hole is suddenly subjected to a large load, thereby ensuring the service life of the bearing, the main reducer and the differential.

[0006] In order to achieve the above purpose, the technical solution used in this utility model is:

[0007] The differential bearing seat of a mining vehicle includes: a main reducer housing, a first bearing cover, a second bearing cover, a positioning sleeve, and a bolt; the first bearing seat and the second bearing seat are arranged on the top of the main reducer housing, and the two ends of the first bearing cover are connected to the top of the first bearing seat by bolts, and the two ends of the second bearing cover are connected to the top of the second bearing seat by bolts; the positioning sleeve is used for positioning and is arranged at the connection position of the first bearing cover and the first bearing seat and the connection position of the second bearing cover and the second bearing seat.

[0008] Furthermore, the first bearing cover and the first bearing seat form a first bearing seat hole, the second bearing cover and the second bearing seat form a second bearing seat hole, and the centers of the first bearing seat hole and the second bearing seat hole are located on the same straight line.

[0009] Furthermore, the first bearing seat and the second bearing seat have the same structure and are positioned opposite to each other; the first bearing cover and the second bearing cover have the same structure and are positioned opposite to each other.

[0010] Furthermore, the two top end planes of the first bearing seat are respectively provided with a first stepped hole, and the two bottom end planes of the first bearing cover are respectively provided with a second stepped hole, and the first stepped hole and the second stepped hole are positioned relative to each other; the two top end planes of the second bearing seat are respectively provided with a third stepped hole, and the two bottom end planes of the second bearing cover are respectively provided with a fourth stepped hole, and the third stepped hole and the fourth stepped hole are positioned relative to each other; the first stepped hole and the third stepped hole have the same structure, including a first inner hole and a second inner hole that are connected, the inner diameter of the first inner hole is larger than the inner diameter of the second inner hole, the first inner hole is located above the second inner hole, and the second inner hole is a threaded hole; the second stepped hole and the fourth stepped hole have the same structure, including a third inner hole and a fourth inner hole that are connected, the inner diameter of the third inner hole is larger than the inner diameter of the fourth inner hole, and the third inner hole is located above the fourth inner hole; the first inner hole and the third inner hole are positioned relative to each other, and the first inner hole and the third inner hole are respectively installed on both ends of the positioning sleeve, and the outer diameter of the positioning sleeve is the same as the first inner hole and the third inner hole.

[0011] Furthermore, the positioning sleeve is a cylindrical structure, and the two ends of the four positioning sleeves are respectively installed in the first inner hole of the first bearing seat, the third inner hole of the first bearing cover, and the first inner hole of the second bearing seat and the third inner hole of the second bearing cover.

[0012] Furthermore, the outer circumferential surface of the positioning sleeve is matched with the first inner hole and the third inner hole respectively, and the matching clearance is a transition fit.

[0013] Further, the bolt is inserted into the second stepped hole, and the inner hole of the positioning sleeve is connected to the second inner hole. The bolt is inserted into the fourth stepped hole, and the inner hole of the positioning sleeve is connected to the second inner hole.

[0014] The technical effects of this utility model include:

[0015] The utility model adds a positioning sleeve, which is used to independently realize the correct positioning of the bearing cover. When the differential bearing seat hole is suddenly subjected to a large load, the correct positioning of the bearing seat and the bearing cover is guaranteed. The utility model has the advantages of reliable positioning, simple structure and easy implementation, thereby ensuring the service life of the bearing, the main reducer and the differential. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front structural diagram of the differential bearing seat of a mining vehicle in the utility model;

[0017] Figure 2 This is a side structural diagram of the differential bearing seat of a mining vehicle in the utility model;

[0018] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0019] Figure 4 It is a structural diagram of the positioning sleeve in the utility model. DETAILED DESCRIPTION

[0020] The following description sufficiently illustrates specific embodiments of the present invention to enable those skilled in the art to practice and reproduce the present invention. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of the exemplary embodiments to those skilled in the art.

[0021] like Figure 1 As shown, it is a front structural diagram of the differential bearing seat of the mining vehicle in the utility model; Figure 2 The figure shows a side structural diagram of the differential bearing seat of the mining vehicle in the present invention.

[0022] The structure of the differential bearing seat of a mining vehicle includes: a main reducer housing 1, a first bearing cover 2, a second bearing cover 3, a positioning sleeve 4, and a bolt 5.

[0023] A first bearing seat 11 and a second bearing seat 12 are provided on the top of the main reducer housing 1. The two ends of the first bearing cover 2 are connected to the top of the first bearing seat 11 by bolts 5, and the two ends of the second bearing cover 3 are connected to the top of the second bearing seat 12 by bolts 5; the positioning sleeve 4 is provided at the connection position of the first bearing cover 2 and the first bearing seat 11 and at the connection position of the second bearing cover 3 and the second bearing seat 12.

[0024] The first bearing cover 2 and the first bearing seat 11 form a first bearing seat hole, while the second bearing cover 3 and the second bearing seat 12 form a second bearing seat hole. The centers of the first and second bearing seat holes are aligned on the same straight line. The bearings are installed in the first and second bearing seat holes. The first and second bearing seats 11 and 12 have identical structures and are positioned opposite each other. The first and second bearing cover 2 and 3 have identical structures and are positioned opposite each other.

[0025] like Figure 3 As shown, Figure 1 The enlarged view of point A in the middle; Figure 4 FIG. 1 is a schematic structural diagram of the positioning sleeve 4 in the present invention.

[0026] The two top end planes of the first bearing seat 11 are respectively provided with first stepped holes, and the two bottom end planes of the first bearing cover 2 are respectively provided with second stepped holes, and the first stepped holes and the second stepped holes are positioned relative to each other; the two top end planes of the second bearing seat 12 are respectively provided with third stepped holes, and the two bottom end planes of the second bearing cover 3 are respectively provided with fourth stepped holes, and the third stepped holes and the fourth stepped holes are positioned relative to each other.

[0027] The first and third stepped holes have the same structure, including a first inner hole and a second inner hole that are connected. The inner diameter of the first inner hole is larger than that of the second inner hole, and the first inner hole is located above the second inner hole. The second inner hole is a threaded hole. The second and fourth stepped holes have the same structure, including a third inner hole and a fourth inner hole that are connected. The inner diameter of the third inner hole is larger than that of the fourth inner hole, and the third inner hole is located above the fourth inner hole. The first and third inner holes are positioned opposite each other.

[0028] The positioning sleeve 4 is a cylindrical structure. The two ends of the four positioning sleeves 4 are respectively installed in the first inner hole of the first bearing seat 11, the third inner hole of the first bearing cover 2, and the first inner hole of the second bearing seat 12 and the third inner hole of the second bearing cover 3. The outer diameter of the positioning sleeve 4 is the same as the first inner hole and the third inner hole. The outer cylindrical surface of the positioning sleeve 4 matches the first inner hole and the third inner hole respectively, and the matching clearance is a transition fit, which ensures the correct positioning of the first bearing cover 2 and the first bearing seat 11, as well as the second bearing cover 3 and the second bearing seat 12, and no displacement will occur in the lateral direction. The inner hole of the positioning sleeve 4 is used for the bolt 5 to pass through.

[0029] The bolt 5 is inserted into the second stepped hole of the first bearing cover 2, and the inner hole of the positioning sleeve 4 is connected to the second inner hole of the first bearing seat 11; and the bolt 5 is inserted into the fourth stepped hole of the second bearing cover 3, and the inner hole of the positioning sleeve 4 is connected to the second inner hole of the second bearing seat 12.

[0030] The method for processing a differential bearing seat of a mining vehicle comprises the following steps:

[0031] 1. Rough-machine the first bearing seat 11, the first bearing cover 2, the second bearing seat 12, and the second bearing cover 3 respectively, and machine the first stepped hole, the second stepped hole, the third stepped hole, and the fourth stepped hole according to the design requirements. Ensure that the first inner hole of the first bearing seat 11, the third inner hole of the first bearing cover 2, the first inner hole of the second bearing seat 12, and the third inner hole of the second bearing cover 3 are correctly matched with the positioning sleeve 4, and the second inner hole is threaded;

[0032] 2. Install the positioning sleeve 4 into the first inner holes of the first bearing seat 11 and the second bearing seat 12, and install the third inner holes of the first bearing gland 2 and the second bearing gland 3 into the positioning sleeve 4, and use the positioning sleeve 4 to position them;

[0033] 3. Insert the bolt 5 into the fourth inner hole of the first bearing cover 2 and the inner hole of the positioning sleeve 4, which is connected to the second inner hole of the first bearing seat 11, to connect the first bearing cover 2 and the first bearing seat 11 together; insert the bolt 5 into the fourth inner hole of the second bearing cover 3 and the inner hole of the positioning sleeve 4, which is connected to the second inner hole of the second bearing seat 12, to connect the second bearing cover 3 and the second bearing seat 12 together;

[0034] 4. Perform fine machining on the first bearing seat hole and the second bearing seat hole to ensure the correct positioning of the bearings.

[0035] Since the positioning sleeve 4 is closely matched with the first bearing cover 2, the first bearing seat 11, the second bearing seat 12 and the second bearing cover 3 respectively, correct positioning is ensured, and the service life of the bearing, differential and final reducer is extended.

[0036] The terms used in this utility model are illustrative and exemplary, rather than restrictive. Since this utility model can be embodied in various forms without departing from the spirit or essence of the technical solution, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A mining vehicle differential bearing seat, characterized in that: include: Main reducer housing, first bearing cover, second bearing cover, positioning sleeve, bolts; the first bearing seat and the second bearing seat are arranged on the top of the main reducer housing, the two ends of the first bearing cover are connected to the top of the first bearing seat with bolts, and the two ends of the second bearing cover are connected to the top of the second bearing seat with bolts; the positioning sleeve is used for positioning and is arranged at the connection position of the first bearing cover and the first bearing seat and the connection position of the second bearing cover and the second bearing seat.

2. The differential bearing seat for a mining vehicle according to claim 1, characterized in that: The first bearing cover and the first bearing seat form a first bearing seat hole, the second bearing cover and the second bearing seat form a second bearing seat hole, and the centers of the first bearing seat hole and the second bearing seat hole are located on the same straight line.

3. The differential bearing seat for a mining vehicle according to claim 1, characterized in that: The first bearing seat and the second bearing seat have the same structure and are positioned opposite to each other; the first bearing pressure cover and the second bearing pressure cover have the same structure and are positioned opposite to each other.

4. The differential bearing seat for a mining vehicle according to claim 1, characterized in that: The two top end planes of the first bearing seat are respectively provided with a first stepped hole, and the two bottom end planes of the first bearing cover are respectively provided with a second stepped hole, and the first stepped hole and the second stepped hole are relative to each other; the two top end planes of the second bearing seat are respectively provided with a third stepped hole, and the two bottom end planes of the second bearing cover are respectively provided with a fourth stepped hole, and the third stepped hole and the fourth stepped hole are relative to each other; the first stepped hole and the third stepped hole have the same structure, including a first inner hole and a second inner hole that are connected, the inner diameter of the first inner hole is larger than the inner diameter of the second inner hole, the first inner hole is located above the second inner hole, and the second inner hole is a threaded hole; the second stepped hole and the fourth stepped hole have the same structure, including a third inner hole and a fourth inner hole that are connected, the inner diameter of the third inner hole is larger than the inner diameter of the fourth inner hole, and the third inner hole is located above the fourth inner hole; the first inner hole and the third inner hole are relative to each other, and the first inner hole and the third inner hole are respectively installed at both ends of the positioning sleeve, and the outer diameter of the positioning sleeve is the same as the first inner hole and the third inner hole.

5. The differential bearing seat for a mining vehicle according to claim 4, characterized in that: The outer cylindrical surface of the positioning sleeve is matched with the first inner hole and the third inner hole respectively, and the matching clearance is a transition fit.

6. The differential bearing seat for a mining vehicle according to claim 4, characterized in that: The bolt is inserted into the second stepped hole, and the inner hole of the positioning sleeve is connected to the second inner hole. The bolt is inserted into the fourth stepped hole, and the inner hole of the positioning sleeve is connected to the second inner hole.

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