A simple installation device for a hub knurled bolt and a knurled bolt press fitting method

Abstract

The application relates to a simple installation device and a knurled bolt press-fitting method of a hub knurled bolt, and belongs to the technical field of assembly tooling, which comprises an installation fixing seat of a three-layer plate welded frame, the lower layer plate of the installation fixing seat is provided with a U-shaped groove for the fixing seat bolt to pass through and the non-knurled section of the knurled bolt to pass through, the middle layer plate is provided with a guide hole for positioning the knurled bolt and a reinforcing rib for enhancing rigidity, and the upper layer plate is provided with a threaded hole for connecting a press-fitting bolt and a bolt taking-out hole for conveniently assembling and disassembling the fixing seat bolt. The fixing seat bolt and the nut are temporarily fixed with the hub, the press-fitting bolt is used for press-fitting the knurled bolt without impact through the threaded hole; the arc-shaped vertical plate is attached to the hub to disperse stress, and the U-shaped groove is suitable for different specifications of hubs. The application realizes rapid press-fitting without large equipment, has a simple structure, high positioning precision and convenient operation, can reduce cost and labor intensity, improves assembly quality and efficiency, and has high universality.

Description

Technical Field

[0001] This invention belongs to the field of wheel hub assembly technology, and particularly relates to a simple installation device for wheel hub knurled bolts and a method for pressing knurled bolts. Background Technology

[0002] The connection between vehicle wheel hubs and tires generally requires high-strength knurled bolts. The knurled section of the bolt must be pressed into the inner hole of the wheel hub with an interference fit to transmit torque and prevent loosening. Currently, there are two main installation methods, but both still have some technical drawbacks: One method involves installation using large hydraulic presses or heavy-duty pneumatic hammers. This method not only requires a huge initial investment, but also involves layers of hidden costs such as site modification, diverse specifications, and long-term maintenance, which seriously restricts the popularization of the technology.

[0003] Another method is to use manual hammering. This method relies entirely on human experience, and the impact force is difficult to control precisely. At best, it damages the appearance of the wheel hub, and at worst, it damages the knurled body of the bolt. In addition, the random angle of force application makes the bolt very easy to tilt without being visible to the naked eye, which creates hidden dangers for subsequent loosening, abnormal noise, and even safety accidents. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a simple installation device and method for knurled bolts, enabling rapid pressing of knurled bolts without the need for large equipment. The device features a simple structure, precise positioning, and strong versatility.

[0005] In view of this, on the one hand, the present invention provides a simple installation device for wheel hub knurled bolts, comprising: Mounting bracket, installed on the wheel hub, used for positioning the knurled bolts to the wheel hub; Press-fit bolts, screwed onto the mounting base, are used to press knurled bolts into the wheel hub.

[0006] According to some embodiments of the present invention, the mounting base is a three-layer plate frame structure, including a lower plate, a middle plate and an upper plate from bottom to top, with an open structure between the lower plate and the middle plate; the rim of the hub is installed between the lower plate and the middle plate.

[0007] According to some embodiments of the present invention, the lower plate of the mounting base is provided with a plurality of U-shaped grooves, the opening direction of the U-shaped grooves being consistent with the opening direction of the mounting base; the U-shaped groove located in the middle position is for the non-knurled section of the knurled bolt to pass through, and the remaining U-shaped grooves are used for the connection between the mounting base and the wheel hub.

[0008] According to some embodiments of the present invention, bolt mounting holes are provided on the middle layer plate corresponding to the U-shaped grooves located on both sides. The fixing seat bolts pass through the bolt mounting holes and the wheel hub threaded holes to realize the connection between the mounting fixing seat and the wheel hub.

[0009] According to some embodiments of the present invention, bolt removal holes are provided on the upper plate at positions corresponding to the bolt mounting holes.

[0010] According to some embodiments of the present invention, the diameter of the bolt removal hole is greater than the maximum outer diameter of the bolt.

[0011] According to some embodiments of the present invention, a guide hole is provided on the middle layer plate corresponding to the U-shaped groove in the middle position. In the installation state, the guide hole is coaxial with the knurled bolt to be installed.

[0012] According to some embodiments of the present invention, a threaded hole is provided on the upper plate at a position corresponding to the guide hole for connecting the press-fit bolts so as to press the knurled bolts into the wheel hub.

[0013] According to some embodiments of the present invention, in the lower plate, middle plate and upper plate, each pair of adjacent plates is connected by an arc-shaped vertical plate, and the arc-shaped curved surface is in contact with the outer side of the wheel hub.

[0014] On the other hand, the present invention provides a method for pressing knurled bolts, which uses the aforementioned simple installation device for wheel hub knurled bolts, and specifically includes the following steps: S1: Attach the lower plate of the mounting bracket to the back of the wheel hub, aligning the U-shaped groove in the middle with the wheel hub mounting hole; S2: Pass the mounting bolt through the wheel hub threaded hole, with the end passing through the U-shaped groove, and tighten it from the outside of the mounting bracket with the mounting nut to temporarily fix the mounting bracket to the wheel hub; S3: Place the knurled bolt into the mounting bracket through the space between the middle plate and the lower plate, and insert the non-knurled section into the wheel hub mounting hole from the front of the wheel hub. At this time, adjust the mounting bracket bolts so that the knurled section of the knurled bolt passes through the guide hole. S4: Screw the press-fit bolt into the threaded hole of the upper plate until the front end of the press-fit bolt is pressed against the tail end of the knurled bolt; S5: Continue to tighten the press-fit bolt, using the thread to increase the force and press the knurled section of the knurled bolt into the hub mounting hole. At this time, the non-knurled section enters the U-shaped groove in the middle position.

[0015] The present invention has at least the following beneficial effects: First, this invention eliminates the need for large hydraulic presses or heavy-duty pneumatic wrenches, fundamentally avoiding the hidden costs of high equipment investment, site modifications, and long-term maintenance. This significantly lowers the technological barrier, making it particularly suitable for scenarios without large equipment. For wheel hubs with different bolt distribution diameters, only the center distance of the U-shaped grooves on both sides of the lower plate needs to be adjusted. The parallel design of the mounting base of the three-layer plate frame structure with the wheel hub end face ensures coaxiality during press-fitting, greatly improving the device's versatility and reducing the cost of repeatedly manufacturing special tooling.

[0016] Secondly, regarding assembly efficiency and convenience, the lower plate of this invention adopts an open U-shaped groove design. When the knurled section of the knurled bolt is pressed into the wheel hub mounting hole, the non-knurled section enters the U-shaped groove in the middle. During disassembly, the mounting bracket can be removed from the wheel hub through the opening of the U-shaped groove. The mounting bracket bolts are guided through the bolt mounting holes of the middle plate to ensure perpendicularity to the wheel hub end face. Combined with the large-diameter bolt removal holes of the upper plate, the installation and disassembly process does not require removing the upper plate or pressing the bolts. The operation steps are simplified, and repeated disassembly and installation can quickly complete the installation of all bolts, greatly improving assembly efficiency.

[0017] Furthermore, regarding assembly quality and safety, the guide holes on the middle plate are coaxial with the knurled bolts, and the press-fit bolts, positioned in conjunction with the threaded holes on the upper plate, achieve impact-free press-fitting. This avoids issues such as wheel hub surface damage, bolt knurling damage, and bolt tilting caused by manual hammering, reducing subsequent loosening, abnormal noise, and safety hazards from the source. The curved vertical plate precisely fits the outer side of the wheel hub, providing radial constraint and distributing press-fitting force to prevent wheel hub deformation. The four reinforcing ribs on the middle plate enhance resistance to deformation, ensuring the coaxiality of the guide holes and wheel hub mounting holes, and guaranteeing the press-fitting accuracy of the knurled bolts.

[0018] Finally, this invention provides a simple installation device and method for knurled bolts, enabling rapid pressing and safe disassembly of knurled bolts without the need for large equipment. It features a simple structure, precise positioning, and strong versatility.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1A schematic diagram of the simple installation device for wheel hub knurled bolts provided by the present invention; Figure 2 This is a schematic diagram illustrating the installation of knurled bolts in a wheel hub using the simplified installation device for knurled bolts provided by this invention. Attached image description: 100. Mounting bracket; 101. Lower plate; 1011. U-shaped groove; 102. Middle plate; 1021. Guide hole; 1022. Bolt mounting hole; 1023. Reinforcing rib; 103. Upper plate; 1031. Bolt removal hole; 1032. Threaded hole; 104. Moving handle; 200. Press bolt; 300. Knurled bolt; 400. Mounting bracket bolt; 500. Hub; 600. Mounting bracket nut.

[0022] The purpose, features, and advantages of this accompanying drawing will be further explained in conjunction with the embodiments and with reference to the accompanying drawing. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0025] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0029] To better explain and facilitate understanding of the present invention, the technical solution and effects of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 and Figure 2 As shown, a simple installation device for knurled bolts on a wheel hub includes a mounting base 100 for positioning the knurled bolt 300 to the wheel hub 500. The mounting base 100 has connecting holes for temporary fixing to the wheel hub 500. The mounting base 100 also has guide holes 1021 for the knurled bolt 300 corresponding to the wheel hub mounting holes. The knurled bolt 300 is pressed in using a press-fit bolt 200 to achieve installation.

[0031] Furthermore, the simple installation device for the knurled bolts on the wheel hub includes a mounting base 100, which is a three-layer plate frame structure welded together, consisting of a lower plate 101, a middle plate 102, and an upper plate 103 from bottom to top. The lower plate 101 and the middle plate 102 are open structures. When the knurled bolts 300 are installed, the wheel rim is installed between the lower plate 101 and the middle plate 102, and the mounting base 100 is temporarily fixed to the wheel hub 500 using mounting bolts 400. Specifically, the distance between the middle plate 102 and the lower plate 101 is greater than the width of the wheel rim, allowing the wheel rim of the wheel hub 500 to be fixed with the mounting bolts 400.

[0032] The mounting bracket 100 serves as the core load-bearing structure of the entire wheel hub knurled bolt simple installation device. It consists of three layers: a lower plate 101, a middle plate 102, and an upper plate 103. The lower plate 101 and the middle plate 102 are open-type structures. This open structure allows for precise matching with the wheel hub 500, ensuring a stable connection with the wheel hub 500 while also enabling quick operation and versatility.

[0033] Furthermore, the lower plate 101 of the mounting base 100 has three U-shaped grooves 1011 for connecting the mounting base bolts 400. The opening direction of the U-shaped grooves 1011 is consistent with the opening direction of the mounting base 100.

[0034] The lower plate 101 serves as the base layer that is directly attached to the hub 500. It has three sets of U-shaped grooves 111 with an open structure. The opening direction of the U-shaped grooves is consistent with the overall opening direction of the mounting base 100, that is, it opens outward in the radial direction.

[0035] Specifically, the two U-shaped grooves 1011 on both sides of the lower plate 101 are used for inserting the fixing bolts 400 and tightening the fixing nuts 600. Simultaneously, after the knurled bolts are installed, the U-shaped grooves avoid the installed knurled bolts, and the knurled bolts are used to fix the wheel rim of the mounting hub. The middle plate 102 has bolt mounting holes 1022 corresponding to the U-shaped grooves 1011 on both sides, providing rigid support for the fixing bolts 400. Correspondingly, the upper plate 103 has bolt removal holes 1031 at positions corresponding to the bolt mounting holes 1022.

[0036] The fixing bolt 400 passes through the bolt mounting hole 1022 in the middle plate 102, through the U-shaped groove in the lower plate 101, and is locked by the fixing nut 600. The clearance fit between the bolt mounting hole 1022 and the outer diameter of the fixing bolt 400 forces the bolt to remain perpendicular to the end face of the hub 500, preventing the fixing bolt 400 from tilting due to uneven force during tightening. This ensures the fitting accuracy between the mounting fixing seat 100 and the hub 500, and also ensures the stability of the mounting fixing seat 100 during the press-fitting of the knurled bolt 300, providing rigid support for the precise press-fitting of the knurled bolt 300.

[0037] Specifically, the diameter of the bolt removal hole 1031 is larger than the maximum outer diameter of the bolt, which facilitates the installation or removal of the fixing bolt 400 on the mounting fixing seat 100. This structural design directly solves the problem of the convenience of bolt installation and removal.

[0038] Furthermore, the U-shaped groove 1011 located in the middle position allows the non-knurled section of the knurled bolt 300 to pass through. A guide hole 1021 is provided on the middle plate 102 corresponding to the U-shaped groove 1011, located at the center of the middle plate 102. In the installed state, the guide hole 1021 is coaxial with the knurled bolt 300 to be installed, used for positioning the knurled bolt 300. Correspondingly, a threaded hole 1032 is provided on the upper plate 103 at a position corresponding to the guide hole 1021, used for connecting the press-fit bolt 200. The press-fit bolt 200 passes through the threaded hole 1032 to press the knurled bolt 300 into the hub 500.

[0039] In this embodiment, the U-shaped grooves on both sides are specifically designed for the insertion of the fixing bolts 400, while the U-shaped groove in the middle allows the non-knurled section of the knurled bolts 300 to pass through. This partitioned design avoids interference between the fixing bolts 400 and the knurled bolts 300. Simultaneously, the redundant length of the U-shaped grooves allows for adaptation to the different distributions of mounting holes on wheel hubs of different specifications, improving the versatility of the tooling device. Furthermore, the open structure reduces the overall weight of the lower plate 101, lowering the workload of manual handling. Additionally, the removal of the fixing bolts 400 does not require the removal of the upper plate 103 or the press-fit bolts 200, simplifying the overall operation.

[0040] The mounting base 100 of this simple wheel hub knurled bolt installation device provides a three-layer frame structure, with a lower plate 101, a middle plate 102, and an upper plate 103 working together from bottom to top to achieve efficient and precise assembly. The lower plate 101 and the middle plate 102 are open structures, with the wheel hub 500 installed between them. The three U-shaped grooves on the lower plate 101 align with the opening direction of the mounting base 100. The two side U-shaped grooves allow the mounting bolts 400 to pass through and the mounting nuts to be tightened, while the middle U-shaped groove allows the non-knurled section of the knurled bolt 300 to pass through. This design facilitates quick alignment and provides compatibility with different wheel hub sizes 500. Bolt mounting holes 1022 on the middle plate 102, corresponding to the two side U-shaped grooves, support the mounting bolts 400 and prevent them from tilting. The guide holes 1021 corresponding to the middle U-shaped groove are used for positioning the knurled bolt 300, ensuring coaxiality with the press-fit bolt 200. The bolt removal hole 1031 on the upper plate 103, corresponding to the bolt mounting hole 1022, has a larger diameter than the maximum outer diameter of the fixing seat bolt 400, facilitating the installation and removal of the fixing seat bolt 400. The threaded hole 1032, corresponding to the guide hole 1021, is used to fix the press-fit bolt 200, allowing it to pass through and abut against the upper end of the knurled bolt 300 to press it into the mounting hole of the wheel hub 500. When installing the fixing seat bolt 400, it passes through the bolt mounting hole 1022 of the middle plate 102, the wheel hub threaded hole, and then through the U-shaped groove of the lower plate 101, and is locked by the fixing seat nut, achieving temporary fixation of the fixing seat 100 and the wheel hub 500. When disassembling, after loosening the fixing seat nut, the fixing seat bolt 400 can be removed from the bolt removal hole 1031. The entire process is convenient and does not require large equipment, avoiding the drawbacks of manual hammering and significantly improving the installation efficiency of the knurled bolt 300.

[0041] Furthermore, in order to improve the applicability of the simple installation device for wheel hub knurled bolts, for wheel hubs with different bolt distribution circle diameters, it is only necessary to open U-shaped grooves 1011 with different center distances on both sides of the lower plate 101, and the coaxiality of press fitting can be guaranteed by the parallel design of the three-layer plate and the end face of the wheel hub.

[0042] Specifically, in the lower plate 101, middle plate 102, and upper plate 103, each adjacent two plates are connected by an arc-shaped vertical plate, and the arc-shaped surface fits against the outer side of the hub 500. The curvature of the arc-shaped vertical plate precisely matches the curvature of the outer side of the hub 500, allowing it to fit tightly against the outer circumference of the hub 500 during assembly, providing radial constraint for the three-layer frame. The arc-shaped fitting surface not only prevents radial displacement of the mounting base 100 due to the axial force of the press-fit bolts 200 during press-fitting, but also disperses local pressure, preventing deformation or damage to the outer side of the hub 500 due to excessive force at a single point. Meanwhile, the curved upright plate has higher bending strength than the flat upright plate. The curved structure can form a semi-enclosed structure for the mounting base 100, evenly distributing the pressing force from the pressing bolts 200 transmitted from the upper plate 103 to the contact surface between the lower plate 101 and the hub 500, reducing the deformation of the mounting base 100 under stress, and ensuring the coaxiality of the knurled bolts 300 during pressing. In addition, the fit between the curved upright plate and the hub 500 can also serve as a quick positioning reference during assembly, reducing assembly time.

[0043] The middle layer plate 102, serving as the intermediate structure connecting the lower layer plate 101 and the upper layer plate 103, must withstand the axial force transmitted by the press-fit bolts 200 and the locking force of the fixing seat bolts 400. To increase the overall structural stability and assembly accuracy, four reinforcing ribs 1023 are provided on the middle layer plate 102 to support the mounting seat 100 and provide installation space for the knurled bolts 300. These ribs are integrally formed with or welded to the middle layer plate 102, improving the overall support rigidity. The reinforcing ribs 1023 significantly enhance the bending and deformation resistance of the middle layer plate 102, preventing warping or denting under stress, ensuring the coaxiality of the guide hole 1021 and the hub mounting hole, and providing a structural basis for the precise positioning of the knurled bolts 300. Furthermore, the four reinforcing ribs 1023 are evenly spaced on the bottom surface of the middle layer to distribute the stress on the mounting seat 100.

[0044] In terms of structural stability, the three-layer plate frame structure forms a semi-enclosed structure through the connection of arc-shaped vertical plates. The arc-shaped curved surface disperses the pressing force to the contact surface between the lower plate 101 and the hub, reducing the deformation of the device. The reinforcing rib 1023 enhances the rigidity of the middle plate 102, resists the axial force of the pressing bolts, and ensures that the overall structure is stable and reliable under stress, providing solid support for efficient and precise assembly.

[0045] Furthermore, the press-fit bolt 200 adopts a tie rod type, which cooperates with the three-layer plate frame to realize the impact-free press-fit and smooth disassembly of the knurled bolt 300, significantly shortening the installation time and improving the assembly efficiency.

[0046] To facilitate the overall movement of the simple wheel hub knurled bolt installation device, a moving handle 104 is installed on the outer side of the mounting base 100. The moving handle 104 provides auxiliary space for the user's hands during installation and disassembly; at the same time, the moving handle 104 improves the portability of the entire device and facilitates its relocation.

[0047] On the other hand, see Figure 1 and Figure 2 As shown, a method for pressing knurled bolts, using the aforementioned simple installation device for wheel hub knurled bolts, specifically includes the following steps: S1: First, attach the lower plate 101 of the mounting bracket 100 to the back of the wheel hub 500, so that the U-shaped groove 1011 in the middle position is aligned with the wheel hub mounting hole.

[0048] S2: Pass the two mounting bolts 400 through different wheel hub threaded holes, and pass the ends through the U-shaped grooves 1011 on both sides. Tighten the mounting nuts 600 from the outside of the mounting base 100 to temporarily fix the mounting base 100 and the wheel hub 500.

[0049] S3: Insert the knurled bolt 300 into the mounting base 100 through the space between the middle plate 102 and the lower plate 101. Specifically, the knurled bolt 300 enters the mounting base 100 between the two reinforcing ribs 1023 on the lower surface of the middle plate 102. Insert the non-knurled section into the wheel hub mounting hole from the front of the wheel hub 500. At this time, the knurled section of the knurled bolt 300 can be passed through the guide hole 1021 by adjusting the mounting base bolt 400. Figure 2 As shown.

[0050] S4: Screw the press bolt 200 into the threaded hole 1032 of the upper plate 103 until the front end of the press bolt 200 is pressed against the tail end of the knurled bolt 300.

[0051] S5: Continue to tighten the press bolt 200, and use the thread to press the knurled section of the knurled bolt 300 into the wheel hub mounting hole. At this time, the non-knurled section enters the U-shaped groove 1011 in the middle position. When disassembling, the mounting bracket 100 can be removed from the wheel hub 500 through the opening of the U-shaped groove 1011.

[0052] Through the above-mentioned installation device and pressing method, the present invention enables rapid pressing of knurled bolts without the need for large equipment, significantly reducing labor intensity and equipment costs, and improving assembly quality and maintenance efficiency.

[0053] The above content is merely a modification or supplement to the structure of the present invention or a substitution in a similar manner. As long as it does not deviate from the structure of the invention or exceed the scope defined in the claims, it shall fall within the protection scope of the present invention.

Claims

1. A simple installation device for knurled bolts on wheel hubs, characterized in that, include: Mounting bracket (100) is installed on the wheel hub for positioning the knurled bolt (300) and the wheel hub (500); A press-fit bolt (200) is screwed onto the mounting base (100) and is used to press the knurled bolt (300) into the hub (500); The mounting base (100) is a three-layer plate frame structure, including a lower plate (101), a middle plate (102) and an upper plate (103) from bottom to top. The lower plate (101) and the middle plate (102) are open structures. The rim of the hub is installed between the lower plate (101) and the middle plate (102). The lower plate (101) of the mounting base (100) is provided with multiple U-shaped grooves (1011), and the opening direction of the U-shaped grooves (1011) is consistent with the opening direction of the mounting base (100); the U-shaped groove (1011) located in the middle position is for the non-knurled section of the knurled bolt (300) to pass through, and the remaining U-shaped grooves (1011) are used for the connection between the mounting base (100) and the hub (500); Bolt mounting holes (1022) are provided on the middle plate (102) corresponding to the U-shaped grooves (1011) located on both sides. The fixing seat bolts (400) pass through the bolt mounting holes (1022) and the wheel hub threaded holes to realize the connection between the mounting fixing seat (100) and the wheel hub (500). The middle plate (102) is provided with a guide hole (1021) corresponding to the U-shaped groove (1011) in the middle position. In the installation state, the guide hole (1021) is coaxial with the knurled bolt (300) to be installed. The upper plate (103) has a threaded hole (1032) at a position corresponding to the guide hole (1021) for connecting the press bolt (200) to press the knurled bolt (300) into the hub (500).

2. The simple installation device for knurled bolts in a wheel hub according to claim 1, characterized in that: The upper plate (103) has a bolt removal hole (1031) at a position corresponding to the bolt mounting hole (1022).

3. The simple installation device for knurled bolts in a wheel hub according to claim 2, characterized in that: The diameter of the bolt removal hole (1031) is greater than the maximum outer diameter of the bolt.

4. The simple installation device for knurled bolts in a wheel hub according to claim 1, characterized in that: In the lower plate (101), middle plate (102) and upper plate (103), each pair of adjacent plates is connected by an arc-shaped vertical plate, and the arc-shaped surface is in contact with the outer side of the hub (500).

5. A method for pressing knurled bolts, using the simple installation device for wheel hub knurled bolts as described in any one of claims 1 to 4, characterized in that, Includes the following steps: S1: Attach the lower plate (101) of the mounting bracket (100) to the back of the wheel hub (500) so that the U-shaped groove (1011) in the middle position is aligned with the wheel hub mounting hole; S2: Pass the fixing seat bolt (400) through the wheel hub threaded hole, and the end through the U-shaped groove (1011). Tighten it from the outside of the mounting fixing seat (100) with the fixing seat nut (600) to temporarily fix the mounting fixing seat (100) and the wheel hub (500); S3: Place the knurled bolt (300) into the mounting base (100) through the space between the middle plate (102) and the lower plate (101), and insert the non-knurled section into the hub mounting hole from the front of the hub (500). At this time, adjust the mounting base bolt (400) so that the knurled section of the knurled bolt (300) passes through the guide hole (1021). S4: Screw the press bolt (200) into the threaded hole (1032) of the upper plate (103) until the front end of the press bolt (200) is pressed against the tail end of the knurled bolt (300); S5: Continue to tighten the press bolt (200) and use the thread to press the knurled section of the knurled bolt (300) into the hub mounting hole. At this time, the non-knurled section enters the U-shaped groove (1011) in the middle position.

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