Oil slinger connection structure, special tool and installation method

Abstract

The present invention provides an oil slinger connection structure, special tools and installation method. The oil slinger connection structure is used to connect the two oil slinger components. The connection is a straight-step overlap structure. The overlap structure includes: a positioning pin, a positioning hole of a countersunk structure is opened from the axial inner end surface of the straight steps of the two components, which cooperates with the positioning pin to improve the matching accuracy of the two components; an anti-loosening bolt, a first step hole is opened from the axial outer end surface of any straight step of the two components, which cooperates with the anti-loosening bolt to fasten the two components; an anti-loosening pin, a second step hole is opened from the circumferential end surface of the component where the outer hole of the first step hole is located, which communicates with the first step hole so that the anti-loosening pin contacts the anti-loosening bolt to prevent the loosening of the connection structure. The present invention also provides special tools and installation methods for the above-mentioned connection structure. The present invention can increase the connection strength of the oil slinger component, prevent loosening, and facilitate installation and disassembly.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing lubrication structures, and in particular to an oil slinger connection structure, a special tool and an installation method. Background Art

[0002] The motor oil-slinger connection structure is primarily used in the sliding bearings of large and medium-sized motors. These bearings are oil-bath lubricated and contain an oil-slinger. The oil-slinger scoops up oil from the bearing housing and splashes it around the bearing shell, achieving lubrication while also reducing shell temperature and protecting the shell.

[0003] With the continuous development of the electric motor market, various motors are moving towards larger capacity and higher power. Consequently, the use of sliding bearings in large and medium-sized motors is increasing, particularly in oil-bath lubricated sliding bearings, which utilize oil slingers for lubrication and cooling. Oil slingers are often made of copper alloy, which offers certain lubricity and wear resistance. Oil slingers consist of two overlapping ring halves, connected and secured by a set pin and bolts. The bolts are slotted or cross-head screws, making them difficult to secure with a torque wrench and prone to loosening or falling out. Because the copper alloy material of the oil slinger is weak, the internal threaded holes in the oil slinger connection are prone to damage during multiple assembly and connection. During maintenance and installation, excessive or insufficient preload on the connecting bolts, as well as stripping of the internal threads, can easily occur. These problems can lead to poor lubrication of the sliding bearing, resulting in bearing damage or shaft seizure. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an oil slinger connection structure, special tools and installation method, which are used to solve the problems in the prior art that the connecting bolts of the oil slinger are easy to loosen and fall off, the internal threaded hole of the oil slinger connection has low strength, and the internal thread of the oil slinger is easily damaged when the oil slinger is assembled and connected multiple times, and the connecting bolt pre-tightening force in the oil slinger is too large or too small and the internal thread is easily stripped during maintenance and construction.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides an oil slinger connection structure for connecting a first assembly and a second assembly of an oil slinger, wherein the connection is a straight-mouth step overlap structure, and the overlap structure comprises:

[0006] A positioning pin, wherein a positioning hole of a countersunk structure is provided on the axial inner end surface of the straight steps of the two components, and cooperates with the positioning pin to improve the matching accuracy of the two components;

[0007] A locking bolt is provided with a first step hole formed on the axial outer end surface of any straight step of the two components, and is matched with the locking bolt to fasten the two components;

[0008] An anti-loosening pin is provided with a second step hole on the circumferential end surface of the component where the outer hole of the first step hole is located, and is communicated with the first step hole so that the anti-loosening pin contacts the anti-loosening bolt to prevent the loosening of the connection structure.

[0009] In one embodiment of the present invention, the anti-loosening bolt is a single-head bolt structure, the head of the anti-loosening bolt has an acute-angled tooth structure, and the contact surface of one end of the anti-loosening pin that contacts the head of the anti-loosening bolt is an arc-shaped acute-angled tooth structure, which engages with the head of the anti-loosening bolt.

[0010] In one embodiment of the present invention, the second stepped hole forms a predetermined angle with the circumferential end surface, and a predetermined angle is correspondingly formed at a portion where the head of the anti-loosening bolt contacts the anti-loosening bayonet.

[0011] In one embodiment of the present invention, the anti-loosening pin includes an anti-loosening pin, a spring, a spring pressure cover and a retaining spring. The anti-loosening pin includes an anti-loosening end and a spring compression end. The anti-loosening end contacts the anti-loosening bolt, and the spring compression end is connected to the spring. The outer side of the spring pressure cover connected to the other end of the spring is axially positioned by the retaining spring.

[0012] In one embodiment of the present invention, the spring cover is a cylindrical step structure.

[0013] In one embodiment of the present invention, the retaining spring is installed in a rectangular groove to position the anti-loosening pin, the spring and the spring cover.

[0014] In one embodiment of the present invention, a screw sleeve is included, and the screw sleeve is arranged in the inner hole of the first step hole, and the screw rod of the anti-loosening bolt is installed in the screw sleeve.

[0015] The present invention also provides a special tool for installing or disassembling the above-mentioned oil-slingering ring connection structure. The main body of the special tool is a circular sleeve with an open groove. The outer diameter of the sleeve matches the inner diameter of the outer hole of the first step hole. The width of the open groove is greater than the diameter of the anti-loosening end of the anti-loosening pin. The clockwise end of the open groove has a specific angle, which is smaller than the angle of the tooth structure of the anti-loosening end. The height of the special tool sleeve is greater than the head height of the anti-loosening bolt.

[0016] In one embodiment of the present invention, a handle is provided on the outer diameter of the circular sleeve.

[0017] The present invention also provides a method for installing an oil slinger connection structure, which is used to install the oil slinger connection structure, comprising the following steps:

[0018] S1. Opening positioning holes with countersunk structures on the axial inner end surfaces of the straight steps of the two components, and placing matching positioning pins in the positioning holes;

[0019] S2. A first step hole is formed on the axial outer end surface of any straight step of the two components, and a locking bolt is provided to match the first step hole;

[0020] S3, opening a second stepped hole on the circumferential end surface of the component where the outer hole of the first stepped hole is located, communicating with the first stepped hole, and installing an anti-loosening pin in the second stepped hole so that the anti-loosening pin contacts the anti-loosening bolt;

[0021] S4. Combine the first component and the second component of the oil slinger, and use the special tool as described in claim 9 to install the anti-loosening bolt. After the installation is completed, the head of the anti-loosening bolt and the anti-loosening end of the anti-loosening pin are engaged.

[0022] As described above, the oil flinger ring connection structure, special tools and installation method of the present invention have the following beneficial effects: the connecting bolts in the connection structure are multi-head anti-loosening bolts, and a torque wrench can be used to tighten the multi-angle anti-loosening bolts according to a certain torque to prevent the occurrence of excessive or insufficient torque on the connecting bolts. The head of the anti-loosening pin has an arc-shaped tooth structure, and the tail of the anti-loosening pin has a compression spring to ensure that the arc-shaped teeth of the anti-loosening pin head contact the multi-angle anti-loosening bolt under the thrust of the spring, thereby playing a self-locking role for the multi-angle anti-loosening bolt. The wire screw sleeve provided in the internal thread of the oil flinger ring assembly increases the connection strength of the internal thread of the oil flinger ring. Special tools make the installation and disassembly of the oil flinger ring more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a schematic top view of an oil slinger including the connection structure of the present invention.

[0024] Figure 2 Display as Figure 1 Schematic diagram of the oil slinger connection structure.

[0025] Figure 3 Display as Figure 2 A partially enlarged schematic diagram of .

[0026] Figure 4 Shown is a cross-sectional schematic diagram of the oil slinger connection structure of the present invention.

[0027] Figure 5 A schematic diagram of a special tool showing the oil slinger connection structure of the present invention is shown.

[0028] Figure 6 Shown is a flow chart of the installation method of the oil slinger connection structure of the present invention.

[0029] Component number description

[0030] 1-first component; 2-positioning pin; 20-positioning hole; 3-sleeve; 4-anti-loosening bolt; 401-anti-loosening bolt head; 40-first step hole; 41-(first step hole) outer hole; 42-(first step hole) inner hole / internal thread connecting hole; 5-anti-loosening pin; 50-second step hole; 51-(second step hole) outer hole; 52-(second step hole) inner hole; 531-anti-loosening end; 532-spring compression end; 6-spring; 7-spring pressure cover; 8-circlip; 9-second component; 10-special tool for disassembly and assembly; 101-handle; 11-anti-loosening angle of anti-loosening bolt; 12-fixing angle of anti-loosening pin. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following examples and the features in the examples can be combined with each other unless they conflict. It should also be understood that the terms used in the examples of the present invention are for the purpose of describing specific embodiments, not for the purpose of limiting the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0032] See also Figures 1 to 6 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0033] Example 1: The oil slinger ring adopts a two-half-ring overlap structure. The two half-rings are the first component 1 and the second component 9. That is, the oil slinger ring includes the first component 1 and the second component 9. The present invention provides an oil slinger ring connection structure for connecting the first component 1 and the second component 9 of the oil slinger ring. The connection is a straight step overlap structure. Figure 1 and Figure 2 . The overlap structure includes: a positioning pin 2, an anti-loosening bolt 4 and an anti-loosening pin. The axial inner end face of the straight-mouth step of the first component 1 and the second component 9 is provided with a positioning hole 20 of a countersunk structure, which cooperates with the positioning pin 2 to improve the matching accuracy of the two components. At the same time, the axial outer end face of the straight-mouth step of any of the above two components is provided with a first step hole 40, and the axial inner end face of the other component is drilled at the corresponding position of the first step hole 40 to form an internal threaded connection hole 42. The entire first step hole 40 including the internal threaded connection hole 42 cooperates with the anti-loosening bolt 4 to fasten the two components. A second step hole 50 is also provided on the circumferential end face of the component where the outer hole 41 of the first step hole is located, which is connected to the first step hole 40. The anti-loosening pin includes an anti-loosening pin 5, a spring 6, a spring pressure cover 7 and a retaining spring 8. The anti-loosening pin 5 contacts the anti-loosening bolt 4 through the second step hole 50 to prevent the loosening of the connection structure. The two connecting parts of the two semicircular ring components are completely symmetrical, so the other connecting part will not be described in detail.

[0034] The anti-loosening bolt 4 is a single-head bolt structure, and the head is provided with a preset number of sharp-angled teeth. One end of the anti-loosening pin 5 that contacts the anti-loosening bolt head 401 is a polygonal anti-loosening head structure, and the contact surface is an acute-angled tooth structure that meshes with the anti-loosening bolt head 401 (see Figure 3 In this way, the anti-loosening pins prevent the polygonal anti-loosening bolts 4 from loosening during operation, thereby ensuring the safe operation of the oil slinger. The above-mentioned preset number depends on the size of the oil slinger. As long as the purpose of the present invention can be achieved, the anti-loosening function can be achieved by the anti-loosening bolts 4 and the anti-loosening pins.

[0035] It should be noted that the two semicircular rings of the oil slinger are completely symmetrical, and the two connecting parts are also completely symmetrical. If the head of the anti-loosening bolt 4 is located in the first component 1 in one connecting part, then in the other connecting part, the head of the anti-loosening bolt 4 must be located in the second component 9. Therefore, the structural descriptions of the first component 1 and the second component 9 below are all exemplary and can be symmetrically interchanged.

[0036] Specifically, first look at the first oil slinger assembly 1 (see Figure 4). First, a positioning hole 20 is opened on the inner end face of the connecting straight-mouth step of the first component 1 of the oil flinger ring. The diameter is Φ1 and the hole depth is h1. The hole is a countersunk structure. The inner diameter matches the outer diameter of the positioning pin 2. The fitting tolerance is a small clearance fit. It is mainly used to improve the fitting accuracy of the first component 1 of the oil flinger ring and the second component 9 of the oil flinger ring. Next, a straight-mouth step hole (first step hole 40) is opened on the axial outer end face of the connecting straight-mouth step. The inner hole diameter of the first step hole 40 is Φ2. The inner hole 42 matches the screw rod of the polygonal anti-loosening bolt 4. The fitting tolerance is a large clearance fit. The outer hole 41 of the first step hole 40 has a diameter of Φ3. The diameter of the outer hole 41 matches the maximum outer diameter of the head of the polygonal anti-loosening bolt 4. The fitting tolerance is a large clearance fit. The height of the outer hole 41 of the first step hole 40 is h2. The height of the outer hole 41 should be less than the height of the head of the polygonal anti-loosening bolt 4. Finally, a step hole (second step hole 50) is opened on the circumferential end face of the connecting straight-mouth step. The inner hole 52 of the second step hole 50 has a diameter of Φ4. The inner hole 52 matches the anti-loosening pin 5 with a clearance fit, which is mainly used for the radial positioning and axial movement of the anti-loosening pin 5. The outer hole 51 of the second step hole 50 has a diameter of Φ5. The diameter of the outer hole 51 matches the maximum outer diameter of the anti-loosening pin 5 with a large clearance fit. The anti-loosening pin 5 includes an anti-loosening end 531 and a spring compression end 532. The outer hole 51 of the second step hole 50 has a depth of h3. A rectangular groove is provided at a position of a depth L1 from the outer hole 51 of the second step hole. A retaining spring 8 is installed in the groove, which is mainly used to position the anti-loosening pin 5, the spring 6 and the spring pressure cover 7. The second step hole 50 is set at a predetermined angle to the straight mouth circumferential end surface, and a predetermined angle is formed accordingly at the position where the head of the anti-loosening bolt contacts the anti-loosening pin, which is mainly used to increase the self-locking ability of the anti-loosening pin and the polygonal anti-loosening bolt 4.

[0037] Oil slinger second assembly 9 (see Figure 4 ) is the same as the first component 1 of the oil slinger ring, and a positioning hole 20 is provided on the inner end face of the connecting straight step of the second component 9 of the oil slinger ring. The specifications and dimensions of the positioning hole 20 are consistent with the specifications and dimensions of the first component 1. The first component 1 and the second component 9 of the oil slinger ring are positioned and fixed by the positioning pin 2. Then, according to the position and size of the first step hole 40 of the first component 1 of the oil slinger ring and the specifications and dimensions of the polygonal anti-loosening bolt, the corresponding position of the second component 9 is drilled to form an internal threaded connection hole 42 as an extension of the inner hole of the first step hole 40. The diameter of the drilled internal threaded connection hole 42 is determined according to the screw thread diameter of the polygonal anti-loosening bolt 4, and is mainly used for the polygonal anti-loosening bolt 4 to connect and fix the first component 1 and the second component 9.

[0038] As another embodiment, a wire screw sleeve 3 is further provided to the internal thread connection hole 42 and the wire screw sleeve 3 is installed by self-tapping screws to increase the strength of the internal thread connection of the second component 9 of the oil slinger.

[0039] Specifically, the above-mentioned polygonal anti-loosening bolt 4 is a single-head bolt structure, and the structure and size of the first and second components 1 and 9 of the oil slinger ring are used as the design and processing basis. The bolt head is composed of a preset number of sharp-angle teeth (see Figure 3 The anti-loosening bolt (anti-loosening angle 11) is mainly used to tighten the polygonal anti-loosening bolt 4, and prevents the polygonal anti-loosening bolt 4 from loosening by means of the anti-loosening latch. A straight step with a diameter of Φ6 and a height of h4 is provided at the bottom of the bolt head. It is mainly used to increase the contact area between the bolt end and the oil slinger when tightening the polygonal anti-loosening bolt 4, thereby reducing the plastic deformation of the oil slinger.

[0040] Specifically, see Figure 4 Combine Figure 3 The aforementioned locking pin 5 has a straight stepped shaft structure, designed and manufactured based on the structure and dimensions of the oil slinger first assembly 1 and the polygonal locking bolt 4. The locking pin 5 has a locking end 531 and a spring compression end 532. Based on the maximum diameter of the second stepped hole 50, the contact point between the locking pin 5 and the spring 6 is the spring compression end 532, while the contact point between the locking pin 5 and the polygonal locking bolt 4 is the locking end 531.

[0041] The spring compression end 532 of the anti-loosening pin 5 has a maximum diameter of Φ7 and a width of L2. This maximum diameter matches the outer hole 51 of the second stepped hole on the circumferential end surface of the oil slinger first assembly 1 with a large clearance fit. The spring compression end 532 of the anti-loosening pin 5 has a diameter of Φ8 and a width of L3. This diameter matches the inner diameter of the spring with a small clearance fit, primarily used for positioning and radially securing the spring.

[0042] The diameter of the anti-loosening end 531 of the anti-loosening pin 5 is the same as the diameter of the spring compression end 532 of the anti-loosening pin 5. The anti-loosening end 531 is matched with the inner hole 52 of the second step hole on the circumferential end face of the straight step connecting the first component 1 of the oil slinger. The matching tolerance is a clearance fit, which is mainly used for the radial positioning of the anti-loosening pin 5. The end of the anti-loosening end 531 of the anti-loosening pin 5 is a polygonal anti-loosening head structure, and the contact surface is a circular arc with multiple acute angle teeth (see Figure 3 , the anti-loosening pin fixing angle 12, the specific number of acute angles is determined according to the acute angle size of the head of the loosening bolt 4 and the diameter size of the anti-loosening end 531), and the part where the polygonal anti-loosening bolt 4 contacts the anti-loosening pin 5 in the screwing direction is set to a predetermined angle, which is mainly used for special tools to install and remove the polygonal anti-loosening bolt.

[0043] See also Figure 4, the spring 6 also has a spring pressure cover 7. The spring pressure cover 7 is a cylindrical step structure with a maximum diameter of Φ9 and a width of L4. The maximum diameter matches the outer hole 51 of the second step hole on the circumferential end face of the oil slinger ring, and the fitting tolerance is a clearance fit. It is mainly used for radial positioning of the spring pressure cover 7 and the outer hole 51 of the second step hole of the first component 1 of the oil slinger ring. The step diameter of the spring pressure cover 7 is Φ10 and the width is L5. The diameter matches the inner diameter of the spring 6, and the fitting clearance is a clearance fit. It is mainly used for installing the spring 6 to ensure the concentricity of the spring 6 and the spring pressure cover 7. The outer side of the spring pressure cover 7 uses a retaining spring 8 for axial positioning to ensure that the anti-loosening pin 5 has a certain spring thrust on the polygonal anti-loosening bolt 4.

[0044] It should be noted that the aforementioned dimensions, such as diameter Φ1-10, length / width L1-4, and height / depth h1-4, are merely illustrative and can be flexibly determined based on the specific specifications of the oil slinger. The motor size determines the bearing size, which in turn determines the oil slinger size, which in turn determines the aforementioned dimensions.

[0045] The present invention also provides a special tool 10 for installing or removing the above-mentioned oil slinger connection structure. The special tool 10 is an open circular sleeve structure. The outer diameter of the sleeve matches the inner diameter of the first step hole outer hole 41 of the straight step axial outer end face of the oil slinger first component 1, and the fitting tolerance is a clearance fit. The inner diameter of the sleeve matches the outer diameter of a common sleeve tool (not shown), and the fitting tolerance is a clearance fit. Figure 5 The width of the opening slot of the circular sleeve of the special tool 10 is greater than the diameter of the locking end 531 of the locking pin 5. The clockwise outer end of the opening slot of the special tool 10 is set at a certain angle, which is smaller than the acute angle of the locking end 531 of the locking pin 5. The height of the opening circular sleeve of the special tool 10 is greater than the height of the head of the multi-head locking bolt 4.

[0046] As an embodiment, a handle 101 is provided on the outer diameter of the circular sleeve of the special tool 10, which is mainly used to separate the anti-loosening pin 5 from the polygonal anti-loosening bolt 4 when installing or removing the oil slinger.

[0047] When disassembling the oil slinger connection structure of the present invention, first use a special tool 10 to clamp the anti-loosening bolt 4 and separate it from the anti-loosening pin 5, and then use a common sleeve tool to open the anti-loosening bolt 4.

[0048] The present invention also provides an installation method of the oil slinger connection structure, which is used for installing the oil slinger having the connection structure.

[0049] See also Figure 6 , the method comprises the following steps:

[0050] S1. A positioning hole 20 with a countersunk structure is formed on the axial inner end surface of the straight steps of the two components, and a matching positioning pin is placed in the positioning hole 20;

[0051] S2. A first step hole 40 is formed on the axial outer end surface of any straight step of the two components, and a locking bolt 4 is provided to match the first step hole 40;

[0052] S3. A second stepped hole 50 is opened on the circumferential end surface of the component where the outer hole of the first stepped hole 40 is located, communicating with the first stepped hole 40, and an anti-loosening pin is installed in the second stepped hole 50 so that the anti-loosening pin contacts the anti-loosening bolt 4;

[0053] S4. Combine the first component 1 and the second component 9 of the oil slinger, and use the aforementioned special tool 10 to install the anti-loosening bolt. After the installation is completed, the head of the anti-loosening bolt 4 is engaged with the anti-loosening end 531 of the anti-loosening pin.

[0054] In summary, the present invention provides an oil-slinger connection structure and installation method. The connecting bolts in the connection structure are polygonal anti-loosening bolts. A torque wrench can be used to tighten the polygonal anti-loosening bolts according to a certain torque to prevent the occurrence of excessive or insufficient torque on the connecting bolts. An anti-loosening pin is provided. The head of the anti-loosening pin has an arc-shaped tooth structure, and the tail of the anti-loosening pin has a compression spring to ensure that the arc-shaped teeth on the head of the anti-loosening pin contact the polygonal anti-loosening bolt under the thrust of the spring, thereby playing a self-locking role for the polygonal anti-loosening bolt. Furthermore, a wire thread sleeve is provided in the internal thread of the oil-slinger assembly to increase the connection strength of the internal thread of the oil-slinger ring and prevent the internal thread of the oil-slinger ring made of copper alloy from being damaged due to its low strength. The special tool provided by the present invention makes the installation and disassembly of the above-mentioned oil-slinger ring more convenient. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and has high industrial utilization value.

[0055] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. An oil slinger connection structure, used for connecting two oil slinger components, the connection is a straight step overlap structure, characterized in that: The overlapping structure comprises: A positioning pin, wherein a positioning hole of a countersunk structure is provided on the axial inner end surface of the straight steps of the two components, and cooperates with the positioning pin to improve the matching accuracy of the two components; A first step hole is provided on the axial outer end surface of any straight step of the two components, and cooperates with the anti-loosening bolt to fasten the two components. The anti-loosening bolt is a polygonal bolt that is tightened with a torque wrench according to a preset torque; An anti-loosening pin is provided with a second stepped hole on the circumferential end surface of the component where the outer hole of the first stepped hole is located, and is communicated with the first stepped hole, so that the anti-loosening pin contacts the anti-loosening bolt to prevent the loosening of the connection structure; The anti-loosening bolt is a single-head bolt structure, and the head of the anti-loosening bolt has an acute-angled tooth structure. The contact surface of one end of the anti-loosening pin that contacts the head of the anti-loosening bolt is an arc-shaped acute-angled tooth structure, which engages with the head of the anti-loosening bolt.

2. The oil slinger connection structure according to claim 1, characterized in that: The second stepped hole forms a predetermined angle with the circumferential end surface, and a predetermined angle is correspondingly formed at a portion where the head of the anti-loosening bolt contacts the anti-loosening bayonet.

3. The oil slinger connection structure according to claim 1, characterized in that: The anti-loosening pin includes an anti-loosening pin, a spring, a spring pressure cover and a retaining spring. The anti-loosening pin includes an anti-loosening end and a spring compression end. The anti-loosening end contacts the anti-loosening bolt, and the spring compression end is connected to the spring. The outer side of the spring pressure cover connected to the other end of the spring is axially positioned by the retaining spring.

4. The oil slinger connection structure according to claim 3, characterized in that: The spring cover is a cylindrical step structure.

5. The oil slinger connection structure according to claim 3, characterized in that: The retaining ring is installed in a rectangular groove and is used to position the anti-loosening pin, the spring and the spring pressure cover.

6. The oil slinger connection structure according to claim 1, characterized in that: It comprises a screw sleeve, which is arranged in the inner hole of the first step hole, and the screw rod of the anti-loosening bolt is installed in the screw sleeve.

7. A special tool for installing or removing the oil slinger connection structure according to any one of claims 1 to 6, characterized in that: The special tool body is a circular sleeve with an open groove. The outer diameter of the sleeve matches the inner diameter of the outer hole of the first step hole. The width of the open groove is larger than the diameter of the anti-loosening end of the anti-loosening pin. The clockwise end of the open groove has a specific angle, which is smaller than the angle of the tooth structure of the anti-loosening end. The height of the special tool sleeve is greater than the head height of the anti-loosening bolt.

8. The special tool according to claim 7, characterized in that: The outer diameter of the circular sleeve is provided with a handle.

9. A method for installing an oil slinger connection structure, used for installing the oil slinger connection structure according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Opening positioning holes with countersunk structures on the axial inner end surfaces of the straight steps of the two components, and placing matching positioning pins in the positioning holes; S2. A first step hole is formed on the axial outer end surface of any straight step of the two components, and a locking bolt is provided to match the first step hole; S3, opening a second stepped hole on the circumferential end surface of the component where the outer hole of the first stepped hole is located, communicating with the first stepped hole, and installing an anti-loosening pin in the second stepped hole so that the anti-loosening pin contacts the anti-loosening bolt; S4. Combine the first component and the second component of the oil slinger, and use the special tool as described in claim 8 to install the anti-loosening bolt. After the installation is completed, the head of the anti-loosening bolt and the anti-loosening end of the anti-loosening pin are engaged.

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