Dustproof ring assembling auxiliary device for excavator shaft

Abstract

The utility model discloses a dustproof ring assembly auxiliary device for an excavator shaft, which belongs to the technical field of excavators and comprises a limiting plate, a hexagon socket cap screw, an elastic retainer ring, a nut, a connecting shaft, a pressing sleeve and a cotter pin. The elastic check ring is arranged at one end of the connecting shaft, the limiting plate is arranged at one end of the elastic check ring, the elastic check ring and the limiting plate are connected through the hexagon socket cap screw and the nut, and the nut is installed at the end of the hexagon socket cap screw. A pressing sleeve is arranged at the other end of the connecting shaft, a dustproof ring is arranged at one end of the pressing sleeve, and a cotter pin is arranged at one end of the dustproof ring. The device can assist in mounting the dustproof ring, ensures that the mounting position of the dustproof ring is accurate, is exquisite in design, simple in structure and convenient to operate, can effectively improve the assembly efficiency of the excavator shaft seat dustproof ring, and remarkably reduces the mounting risk.

Description

Technical Field

[0001] The utility model belongs to the technical field of excavators, and particularly relates to an auxiliary device for assembling a dust ring for an excavator shaft. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] During the assembly of the excavator boom shaft seat, the installation of the shaft sleeve dust ring is a key step. The traditional installation method is to press the dust ring directly against the shaft sleeve into the shaft seat. This assembly method has some assembly problems. Since the dust ring has a certain degree of flexibility and the internal structure of the shaft seat is closed, directly pressing it in can easily damage or deform the dust ring. During assembly, the shaft sleeve and dust ring are fitted together and then installed into the shaft sleeve. The dust ring is prone to deformation and displacement, which can easily lead to assembly problems of the dust ring, causing malfunctions in the excavator operation. Since the dust ring space is closed, it is difficult to observe the assembly status from the outside, and it is impossible to confirm whether the dust ring is installed securely. The above problems not only affect the sealing performance of the dust ring, but may also pose a safety hazard to the normal operation of the excavator. In addition, as the assembly tasks of the excavator increase, the inconvenience of traditional assembly methods has become increasingly prominent, resulting in low assembly efficiency and increased operational risks. Utility Model Content

[0004] In response to the above problems, the utility model provides a dust ring assembly auxiliary device for excavator shaft, which can assist in the installation of dust rings and ensure the accurate installation position of dust rings. It has a sophisticated design, a simple structure, and is easy to operate. It can effectively improve the assembly efficiency of excavator shaft seat dust rings and significantly reduce installation risks.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An auxiliary device for assembling a dust ring for an excavator shaft comprises a limit plate, a hexagon socket head screw, an elastic retaining ring, a nut, a connecting shaft, a press sleeve and a cotter pin; an elastic retaining ring is provided at one end of the connecting shaft, a limit plate is provided at one end of the elastic retaining ring, the hexagon socket head screw and the nut connect the elastic retaining ring and the limit plate, and a nut is installed at the end of the hexagon socket head screw; a press sleeve is provided at the other end of the connecting shaft, a dust ring is provided at one end of the press sleeve, and a cotter pin is provided at one end of the dust ring.

[0007] Furthermore, a circular hole is provided in the middle of the limiting plate, and a plurality of first screw holes are provided on the limiting plate, and the plurality of first screw holes are arranged at intervals around the circular hole.

[0008] Furthermore, the limiting plate is sleeved on the connecting shaft, and the surface of the limiting plate is in close contact with the elastic retaining ring.

[0009] Furthermore, the elastic retaining ring is fixedly connected to the connecting shaft, and a plurality of second screw holes are provided on the elastic retaining ring, and the plurality of second screw holes are arranged at intervals around the connecting shaft.

[0010] Furthermore, the first screw hole and the second screw hole are aligned, and the hexagon socket head screw is screwed into the first threaded hole and the second threaded hole in sequence.

[0011] Furthermore, the pressing sleeve includes a first annular platform and a second annular platform, the second annular platform is provided at one end of the first annular platform, and the first annular platform and the second annular platform are an integrated structure.

[0012] Furthermore, the first annular platform is provided with a plurality of through holes, and the plurality of through holes are arranged at intervals around the second annular platform.

[0013] Furthermore, an annular member is provided on the connecting shaft, the annular member is fixedly connected to the connecting shaft, and the surface of the annular member is in close contact with the surface of the second annular platform.

[0014] Furthermore, a mounting hole is provided at the end of the connecting shaft, the mounting holes are symmetrically arranged, and the mounting hole is used to install a cotter pin.

[0015] Furthermore, the surface of the dust ring is in close contact with the surface of the first annular platform.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are:

[0017] This utility model improves assembly accuracy by designing a limit plate to assist in positioning the dust seal, thereby reducing poor sealing performance caused by position deviation. It also prevents damage to the dust seal during assembly and effectively prevents deformation or displacement of the dust seal during assembly, thereby extending the service life of the dust seal.

[0018] This new model simplifies assembly steps. The specialized shaft design allows for quick insertion of the sleeve and dust ring, and the use of a cotter pin makes the entire assembly process simpler and faster. It has strong assembly adaptability. For excavator axle seats with different bore sizes, assembly can be performed by simply changing the size of the compression sleeve, increasing operational convenience and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] Figure 1 This is a cross-sectional view of the auxiliary device for assembling a dust ring for an excavator shaft according to the utility model;

[0021] Figure 2This is a three-dimensional diagram of the utility model of the auxiliary device for assembling the dust ring for the excavator shaft;

[0022] Figure 3 This is an exploded view of the utility model of the auxiliary device for assembling the dust ring for the excavator shaft;

[0023] In the figure: 1. Limit plate; 11. First screw hole; 2. Hexagon socket head screw; 3. Elastic retaining ring; 31. Second screw hole; 4. Nut; 5. Connecting shaft; 51. Ring member; 52. Mounting hole; 6. Press sleeve; 61. First annular platform; 62. Second annular platform; 63. Through hole; 7. Split pin; 8. Dust ring; 9. Bushing; 10. Excavator axle seat. DETAILED DESCRIPTION

[0024] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0025] The present invention is described in detail below with reference to the accompanying drawings. The present embodiment discloses an auxiliary device for assembling a dust ring for an excavator shaft. Figure 1 As shown, it includes a limit plate 1, a hexagon socket head screw 2, an elastic retaining ring 3, a nut 4, a connecting shaft 5, a pressing sleeve 6 and a cotter pin 7; an elastic retaining ring 3 is provided at one end of the connecting shaft 5, and a limit plate 1 is provided at one end of the elastic retaining ring 3. The hexagon socket head screw 2 and the nut 4 connect the elastic retaining ring 3 and the limit plate 1, and the nut 4 is installed at the end of the hexagon socket head screw 2; a pressing sleeve 6 is provided at the other end of the connecting shaft 5, a dust ring is provided at one end of the pressing sleeve 6, and a cotter pin 7 is provided at one end of the dust ring.

[0026] like Figure 3 As shown, a circular hole is provided in the center of the limiting plate 1. The limiting plate 1 is provided with a plurality of first screw holes 11, which are spaced around the circular hole. The limiting plate 1 is sleeved onto the connecting shaft 5, with the surface of the limiting plate 1 in close contact with the circlip 3. The circlip 3 is fixedly connected to the connecting shaft 5 and provided with a plurality of second screw holes 31, which are spaced around the connecting shaft 5. The first screw holes 11 and the second screw holes 31 are aligned, and the hexagon socket head screws 2 are screwed into the first and second threaded holes, respectively.

[0027] The hexagon socket head screw 2 and the nut 4 connect the elastic ring 3 and the limit plate 1. The first screw hole 11 and the second screw hole 31 are set in the same number and have the same hole diameter. They are also equipped with the same number of hexagon socket head screws 2 and nuts. One end face of the nut is in close contact with the surface of the elastic ring 3, and a shaft sleeve 9 is provided at one end of the elastic ring 3.

[0028] The limiting plate 1 is a circular plate with a circular hole in the middle. The connecting shaft 5 passes through the circular hole so that the limiting plate 1 is sleeved on the connecting shaft 5. The limiting plate 1 is designed to assist in positioning the dust ring to reduce the poor sealing performance caused by position deviation. The position of the dust ring is limited by the limiting plate 1, such as Figure 1 As shown, during installation, one end face of the limit plate 1 is in close contact with the outer surface of the excavator shaft seat 10, which limits the position of the connecting shaft 5, thereby limiting the position of the dust ring sleeved on the connecting shaft 5, and ensuring that the dust ring 8 is installed in an accurate position.

[0029] The press sleeve 6 includes a first annular platform 61 and a second annular platform 62. The second annular platform 62 is provided at one end of the first annular platform 61, and the first and second annular platforms 61 and 62 form an integrated structure. The first annular platform 61 is provided with a plurality of through holes 63, which are spaced around the second annular platform 62. The connecting shaft 5 is provided with an annular member 51, which is fixedly connected to the connecting shaft 5, and the surface of the annular member 51 is in close contact with the surface of the second annular platform 62. The end of the connecting shaft 5 is provided with a mounting hole 52, which is symmetrically arranged and is used to mount a cotter pin 7. The surface of the dust ring 8 is in close contact with the surface of the first annular platform 61.

[0030] The pressing sleeve 6 is mounted on the connecting shaft 5, with one end of the pressing sleeve 6 abutting against the annular member 51 on the connecting shaft 5, and the other end tightly fitting against the dust ring 8. When pushed, the dust ring 8 is pushed toward the inside of the shaft hole on the excavator shaft seat 10 by the pressing sleeve 6. After being pushed into the inside, the cotter pin 7 installed at the end of the connecting shaft 5 is removed, and the pressing sleeve 6 is brought out of the shaft hole of the excavator shaft seat 10 (the dust ring 8 has a large diameter, and the cotter pin 7 can clamp the pressing sleeve 6 without bringing the dust ring 8 out. When installing, install the dust ring 8 first, and then install the shaft sleeve 9). Because the dust ring 8 is tightly fitted to the pressing sleeve 6, the entire surface of the dust ring 8 is pressed into the excavator shaft seat 10 together, effectively preventing the dust ring 8 from being damaged during the assembly process, and effectively preventing the dust ring 8 from being deformed or shifted during the assembly process, thereby extending the service life of the dust ring 8.

[0031] For excavator axle seats 10 with different models and apertures, assembly is performed by replacing the size of the pressing sleeve 6. The size of the pressing sleeve 6 matches the size of the dust ring 8 and the size of the shaft hole on the excavator axle seat 10. When the size of the shaft hole on the excavator axle seat 10 increases or decreases, different models of dust rings 8 can be used, and the pressing sleeve 6 of the corresponding size can be replaced according to the size of the dust ring 8, so that the surface of the dust ring 8 is in close contact with the surface of the pressing sleeve 6, avoiding bending of the dust ring 8 during the propulsion process, thereby increasing the convenience and flexibility of operation.

[0032] To use the dust seal assembly aid: Secure the limit plate 1 and connecting shaft 5 with the hexagon socket head screw 2, circlip 3, and nut 4. Insert the compression sleeve 6 and dust seal 8 onto the connecting shaft 5 in sequence and secure with the cotter pin 7. Place the dust seal into the excavator's shaft seat 10. Once the dust seal 8 is pushed in, the cotter pin 7 will pull the compression sleeve 6 out of the shaft seat. To assemble a different shaft seat, replace the compression sleeve 6 with a different size and then install the dust seal 8.

[0033] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. An auxiliary device for assembling a dust ring for an excavator shaft, characterized in that: It includes a limit plate, a hexagon socket head screw, an elastic retaining ring, a nut, a connecting shaft, a pressing sleeve and a cotter pin; an elastic retaining ring is provided at one end of the connecting shaft, a limit plate is provided at one end of the elastic retaining ring, the elastic retaining ring and the limit plate are connected by the hexagon socket head screw and the nut, and the nut is installed at the end of the hexagon socket head screw; a pressing sleeve is provided at the other end of the connecting shaft, a dust ring is provided at one end of the pressing sleeve, and a cotter pin is provided at one end of the dust ring.

2. The auxiliary device for assembling a dust ring for an excavator shaft according to claim 1, characterized in that: A circular hole is provided in the middle of the limiting plate, and a plurality of first screw holes are provided on the limiting plate. The plurality of first screw holes are arranged at intervals around the circular hole.

3. The auxiliary device for assembling a dust ring for an excavator shaft according to claim 2, characterized in that: The limiting plate is sleeved on the connecting shaft, and the surface of the limiting plate is in close contact with the elastic retaining ring.

4. The auxiliary device for assembling a dust seal for an excavator shaft according to claim 3, characterized in that: The elastic retaining ring is fixedly connected to the connecting shaft. The elastic retaining ring is provided with a plurality of second screw holes, and the plurality of second screw holes are arranged at intervals around the connecting shaft.

5. The auxiliary device for assembling a dust ring for an excavator shaft according to claim 4, characterized in that: The first screw hole and the second screw hole are aligned, and the hexagon socket head screw is screwed into the first screw hole and the second screw hole in sequence.

6. The auxiliary device for assembling a dust seal for an excavator shaft according to claim 1, characterized in that: The press sleeve includes a first annular platform and a second annular platform. The second annular platform is provided at one end of the first annular platform. The first annular platform and the second annular platform are an integrated structure.

7. The auxiliary device for assembling a dust seal for an excavator shaft according to claim 6, characterized in that: The first annular platform is provided with a plurality of through holes, and the plurality of through holes are arranged at intervals around the second annular platform.

8. The auxiliary device for assembling a dust seal for an excavator shaft according to claim 7, characterized in that: An annular member is provided on the connecting shaft, the annular member is fixedly connected to the connecting shaft, and the surface of the annular member is in close contact with the surface of the second annular platform.

9. The auxiliary device for assembling a dust seal for an excavator shaft according to claim 1, characterized in that: The end of the connecting shaft is provided with a mounting hole, the mounting holes are symmetrically arranged, and the mounting hole is used to install a cotter pin.

10. The auxiliary device for assembling a dust seal for an excavator shaft according to claim 1, characterized in that: The surface of the dust ring is in close contact with the surface of the first annular platform.

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