Hub unit bearing press-fitting device

Abstract

The utility model relates to the technical field of automobile part assembling, in particular to a hub unit bearing press-fitting device. Comprising a support, a threaded hole is formed in the middle of the support, a threaded ejector rod is in threaded connection with the interior of the threaded hole, a pressing block is in limiting contact with the lower end of the threaded ejector rod, strip-shaped sliding grooves are symmetrically formed in the positions, on the two sides of the threaded hole, of the support, and supporting rods are slidably connected into the two sliding grooves correspondingly; the upper end of each supporting rod is in threaded connection with a fastening nut, and the lower end of each supporting rod is provided with threads. The hub unit bearing is simple in structure, convenient to use and high in universality, and the problems that in the prior art, the structure is complex, carrying is inconvenient, and the hub unit bearing is difficult to install outdoors are solved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts assembly technology, and in particular to a wheel hub unit bearing press-fitting device. Background Technology

[0002] When installing bearings in the wheel hub unit of heavy vehicles, the bearings and the wheel hub unit housing are interference fit, requiring press fitting. Traditional installation methods require the use of a press fitting machine to complete this work; however, test vehicles cannot use press fitting machines in test tracks, field conditions, etc., so bearing installation has become a major problem.

[0003] CN222520462U discloses a wheel hub bearing press-fitting device, including a base plate, several support legs fixedly installed on the bottom of the base plate, a top plate fixedly installed on the base plate by several columns, and a pressure plate movably installed on the top plate by a first electric push rod. The device is characterized by: a mounting plate movably provided between the base plate and the top plate, several sliding rods fixedly installed on the mounting plate, several sliding holes corresponding to the sliding rods on the base plate, the sliding rods slidably installed in the corresponding sliding holes, the mounting plate and the base plate being connected by several springs, a through hole on the mounting plate and a clamping device for clamping the wheel hub, a first bearing placed on the inner circumference of the hole at the center of the wheel hub, a placement platform fixedly installed on the base plate, a coaxial second bearing placed on the placement platform, and several C-shaped plates movably installed on the top plate by several second electric push rods. The top and bottom sides of the inner walls of the C-shaped plates can sequentially abut and contact the top and bottom of the mounting plate. However, this prior art has a relatively complex structure and high manufacturing and maintenance costs.

[0004] CN216029181U discloses a wheel hub bearing press-fitting device, relating to the field of wheel hub processing technology. This wheel hub bearing press-fitting device includes a platform, a fixing assembly, and a press-fitting mechanism. Its features include: a vertical plate fixedly installed on the top of the platform; two sets of strips arranged on the front side of the vertical plate; pulleys fixedly installed on the adjacent sidewalls of the two sets of strips, forming a clamping space; two sets of support plates arranged on the top of the platform, with pressure plates mounted on the support plates; the fixing assembly includes a sliding block, a connecting block, and a hydraulic rod arranged on the vertical plate; a sliding groove is formed on the vertical plate, and the sliding block is slidably installed within the sliding groove; the press-fitting mechanism is located at the bottom of the platform, and can drive the two sets of support plates to move in the same direction relative to the front side of the vertical plate. However, this prior art is relatively large and complex in structure, making it inconvenient to carry and use in vehicles. Utility Model Content

[0005] The purpose of this utility model is to provide a wheel hub unit bearing press-fitting device, which has a simple structure, is easy to use and has strong versatility, and solves the problem of difficulty in installing wheel hub unit bearings outdoors in the prior art.

[0006] This utility model provides the following solution.

[0007] A hub unit bearing press-fitting device includes a bracket with a threaded hole in the middle. A threaded push rod is threadedly connected inside the threaded hole. A pressure block is limited and contacted at the lower end of the threaded push rod. A strip-shaped sliding groove is symmetrically arranged on the bracket on both sides of the threaded hole. A support rod is slidably connected in each of the two sliding grooves. A fastening nut is threadedly connected to the upper end of each support rod, and the lower end of the support rod is threaded.

[0008] Furthermore, the support rod has a boss in the middle, which can stop on the lower surface of the bracket, and the fastening nut at the upper end of the support rod can stop on the upper surface of the bracket.

[0009] The fastening nut and the boss can cooperate to lock the support rod on the slide.

[0010] Furthermore, the support rod includes a main rod, the lower end of which is detachably connected to a connector, the lower end of which is provided with an external thread; the fastening nut is threadedly connected to the upper end of the main rod, and the boss is located in the middle of the main rod.

[0011] The connector can be connected to the wheel hub unit half-shaft mounting threaded hole; the fastening nut and boss can cooperate to lock the main rod on the slide groove; the support rod is divided into two parts, and the connector of the support rod can be replaced to adapt to different models of wheel hub units, without having to replace the entire support rod, saving costs and making it easier to store and carry.

[0012] Furthermore, the lower end of the main rod is threadedly connected to the upper end of the connector.

[0013] Threaded connections provide pull-out resistance and are more robust.

[0014] Furthermore, the upper end of the threaded push rod is provided with a loading cap, and the lower end of the threaded push rod is provided with a pressing part. The pressing part has a conical structure, and the tip of the pressing part contacts the pressure block.

[0015] The top pressing part has a conical structure, which minimizes the contact area between the tip and the pressing block, thereby reducing the friction during rotation and making the threaded push rod easier to rotate.

[0016] Furthermore, the pressing block has a disc-shaped structure, with both the upper and lower surfaces being circular, and the diameter of the upper surface being larger than the diameter of the lower surface.

[0017] The diameter of the upper surface of the pressure block is larger than that of the lower surface, so that it can be inserted into the hub unit to press the bearing into place.

[0018] Furthermore, a limiting groove is provided at the center of the upper surface of the pressure block, and the lower end of the threaded push rod can be limited and accommodated in the limiting groove; the bottom surface of the limiting groove has a funnel-shaped structure, and the tip of the pressing part of the threaded push rod is in pressure contact with the recessed end of the bottom surface of the limiting groove.

[0019] The lower end of the threaded push rod can be contained within the limiting groove. The bottom surface of the limiting groove has a funnel-shaped structure, which can prevent the top pressing part from sliding relative to the pressure block during the application of force, thus preventing the force direction from deviating, and also makes it easier to rotate.

[0020] Furthermore, the bracket has a straight-line structure, with two sliding grooves respectively located at both ends of the bracket, and both are U-shaped opening grooves.

[0021] The slide is open at one end, so when replacing the support rod or storing it, you only need to loosen the fastening nut. You can separate the support rod from the bracket without completely removing the fastening nut, which saves disassembly and assembly time.

[0022] Furthermore, the bracket has a straight-line structure, and the two sliding grooves have elongated hole structures.

[0023] The groove has a long, narrow hole structure, which prevents the support rod from easily sliding out of the groove. This makes it more convenient, safer, and less likely to be lost when connecting and disconnecting the support rod from the wheel hub unit.

[0024] This utility model has the following advantages compared with the prior art:

[0025] This utility model provides a hub unit bearing press-fitting device that converts the rotational torque of the threaded push rod into downward pressure. The hub unit's own half-shaft mounting threaded hole serves as the mounting hole for the support rod. A fastening nut secures the support rod to the upper surface of the bracket. The support rod can slide within a groove in the bracket to adjust the spacing to accommodate different hub unit models. Pressure is evenly applied to the bearing using a pressure block to ensure smooth pressing into the hub unit without damage. This utility model features a simple structure, is easy to carry and use, and is highly versatile. It allows for the installation of hub unit bearings even when a press-fitting machine is unavailable, solving the problem of difficult outdoor installation of hub unit bearings due to the complex structure and inconvenient portability of existing technologies. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Appendix Figure 1This is an exploded view of the structure of the hub unit bearing press-fitting device of this utility model;

[0028] Appendix Figure 2 This is a schematic diagram of the structural assembly of the hub unit bearing press-fitting device of this utility model;

[0029] Appendix Figure 3 This is a schematic diagram of the support rod described in Example 2;

[0030] Appendix Figure 4 This is a schematic diagram of the structure of the threaded push rod described in this utility model;

[0031] Appendix Figure 5 This is a partial structural schematic diagram of the hub unit bearing press-fitting device described in Example 3.

[0032] In the picture:

[0033] 1. Bracket; 11. Threaded hole; 12. Slide groove; 2. Threaded top rod; 21. Loading cap; 22. Top pressure part; 3. Pressure block; 31. Limiting groove; 4. Support rod; 41. Main rod; 42. Connector; 43. Boss; 5. Fastening nut. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “said,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0036] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0037] It should be understood that although the terms first, second, third, etc., may be used in the embodiments of this application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, first may also be referred to as second without departing from the scope of the embodiments of this application, and similarly, second may also be referred to as first.

[0038] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0039] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0040] It should be noted that any symbols and / or numbers present in the specification that are not marked in the accompanying drawings are not reference numerals.

[0041] Example 1, please refer to Figure 1 and Figure 2 As shown, this embodiment provides a hub unit bearing press-fitting device, including a bracket 1. The bracket 1 has a straight structure. A threaded hole 11 is provided in the middle of the bracket 1. A threaded push rod 2 is threadedly connected in the threaded hole 11. The lower end of the threaded push rod 2 is limited to contact with a pressure block 3, which is used to press on the upper surface of the bearing to apply pressure to the bearing. The two ends of the bracket 1 are symmetrically provided with strip-shaped sliding grooves 12. Support rods 4 are slidably connected in the two sliding grooves 12 respectively. The upper end of the support rod 4 is threadedly connected with a fastening nut 5. The lower end of the support rod 4 is threaded for connection with the hub unit half shaft mounting threaded hole.

[0042] Specifically, please refer to Figures 1 to 4As shown, the upper end of the threaded push rod 2 is provided with a loading cap 21, which is a hexagonal prism structure used to cooperate with a wrench for rotational loading; the lower end of the threaded push rod 2 is provided with a pressing part 22, which is a conical structure with its tip pointing downwards and contacting the pressure block 3; the pressure block 3 is a disc-shaped structure, with both its upper and lower surfaces being circular. The diameter of the upper surface of the pressure block 3 is larger than the diameter of the lower surface but smaller than the diameter of the bearing mounting opening, so that it can be inserted into the hub unit to press the bearing into place; a limiting groove 31 is provided at the center of the upper surface of the pressure block 3, and the lower end of the threaded push rod 2 can be limited and accommodated in the limiting groove 31 to prevent the pressing part 22 from sliding relative to the pressure block 3 during the application of force, thus preventing the application of force. The force direction is offset; the bottom surface of the limiting groove 31 is a funnel-shaped structure, and the tip of the threaded push rod 2 pressing part 22 is in pressure contact with the concave end of the bottom surface of the limiting groove 31, which reduces the friction force generated when the threaded push rod 2 rotates and applies pressure; the middle part of the support rod 4 is provided with a boss 43, which can stop on the lower surface of the bracket 1, and the fastening nut 5 at the upper end of the support rod 4 can stop on the upper surface of the bracket 1. The fastening nut 5 and the boss 43 can cooperate with each other to lock the support rod 4 on the slide groove 12; the slide grooves 12 at both ends of the bracket 1 are open at opposite ends. When replacing or storing the support rod 4, it is only necessary to loosen the fastening nut 5. The support rod 4 can be separated from the bracket 1 without completely removing the fastening nut 5, which can save disassembly and assembly time.

[0043] In use, first install the support rod 4 into the slide groove 12, and then pass the threaded push rod 2 through the threaded hole 11 of the bracket 1 from top to bottom. Next, connect the lower ends of the two support rods 4 to the half-shaft mounting threaded holes at both ends of the bearing mounting port diameter of the hub unit. Place the bearing at the mounting port of the hub unit, and place the pressure block 3 on the upper surface of the bearing, making the circle of the pressure block 3 as close as possible to the center of the bearing. Adjust the position of the bracket 1 through the slide groove 12 so that the lower end of the threaded push rod 2 aligns with the limiting groove 31 of the pressure block 3. Rotate the fastening nut 5 to lock the support rod 4 to the bracket 1, and rotate the threaded push rod 2 so that the pressing part 22 inserts into the limiting groove 31 and contacts the bottom surface of the limiting groove 31. Use a wrench to rotate the threaded push rod 2 downwards, gradually pressing the bearing into the hub unit. After pressing, loosen the threaded push rod 2 and disassemble the device. Different specifications of support rods 4 and pressure blocks 3 can be replaced according to different models of hub units and bearings.

[0044] Example 2 is an improvement on Example 1 in terms of the structure of the support rod 4. This example provides a hub unit bearing press-fitting device, including a bracket 1, which is a straight-line structure. A threaded hole 11 is provided in the middle of the bracket 1, and a threaded push rod 2 is threadedly connected to the threaded hole 11. The lower end of the threaded push rod 2 is limited to contact with a pressure block 3, which is used to press against the upper surface of the bearing to apply pressure to the bearing. The two ends of the bracket 1 are symmetrically provided with strip-shaped sliding grooves 12, and support rods 4 are slidably connected in the two sliding grooves 12 respectively. The upper end of the support rod 4 is threadedly connected to a fastening nut 5, and the lower end of the support rod 4 is threaded for connection with the hub unit half-shaft mounting threaded hole.

[0045] Specifically, please refer to Figure 3 As shown, the support rod 4 includes a main rod 41. The lower end of the main rod 41 is detachably connected to a connector 42 via a thread. The connector 42 can be connected to the half-shaft mounting threaded hole of the hub unit. The upper end of the main rod 41 is threadedly connected to a fastening nut 5. The middle part of the main rod 41 is provided with a boss 43. The boss 43 can stop on the lower surface of the bracket 1. The fastening nut 5 at the upper end of the main rod 41 can stop on the upper surface of the bracket 1. The fastening nut 5 and the boss 43 can cooperate with each other to lock the main rod 41 on the slide groove 12.

[0046] The wheel hub unit bearing press-fitting device provided in this embodiment can adapt to different models of wheel hub units by replacing the connector 42 of the support rod 4, without having to replace the entire support rod 4, which saves costs and makes it easier to store and carry.

[0047] Example 3: This example modifies the structure of the bracket 1 based on Example 1 or Example 2. This example provides a hub unit bearing press-fitting device, including a bracket 1. The bracket 1 has a straight-line structure. A threaded hole 11 is provided in the middle of the bracket 1. A threaded push rod 2 is threaded into the threaded hole 11. The lower end of the threaded push rod 2 is limited and contacts a pressure block 3, which is used to press against the upper surface of the bearing to apply pressure. A strip-shaped sliding groove 12 is symmetrically arranged on both sides of the center of the bracket 1. A support rod 4 is slidably connected to each of the two sliding grooves 12. A fastening nut 5 is threaded to the upper end of the support rod 4, and the lower end of the support rod 4 is threaded for connection with the hub unit half-shaft mounting threaded hole.

[0048] Specifically, please refer to Figure 5 As shown, the sliding grooves 12 on both sides of the center of the bracket 1 are elongated holes. When replacing or storing the support rod 4, the fastening nut 5 must be completely removed before the support rod 4 can be taken out from under the bracket 1 and separated from the bracket 1. The advantage of this structure is that the support rod 4 will not easily slide out of the sliding groove 12, and it is more convenient, safer and less likely to be lost when connecting and disassembling the support rod 4 with the hub unit.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hub unit bearing press-fitting device, characterized in that, The bracket (1) includes a threaded hole (11) in the middle of the bracket (1). A threaded push rod (2) is threaded inside the threaded hole (11). A pressure block (3) is limited to contact the lower end of the threaded push rod (2). A strip-shaped sliding groove (12) is symmetrically arranged on the bracket (1) on both sides of the threaded hole (11). A support rod (4) is slidably connected in each of the two sliding grooves (12). A fastening nut (5) is threaded to the upper end of each support rod (4). The lower end of the support rod (4) is threaded.

2. The hub unit bearing press-fitting device according to claim 1, characterized in that, The support rod (4) has a boss (43) in the middle, which can stop on the lower surface of the bracket (1), and the fastening nut (5) at the upper end of the support rod (4) can stop on the upper surface of the bracket (1).

3. The hub unit bearing press-fitting device according to claim 2, characterized in that, The support rod (4) includes a main rod (41), and a connector (42) is detachably connected to the lower end of the main rod (41). The lower end of the connector (42) is provided with an external thread. The fastening nut (5) is threaded to the upper end of the main rod (41), and the boss (43) is located in the middle of the main rod (41).

4. The hub unit bearing press-fitting device according to claim 3, characterized in that, The lower end of the main rod (41) is threadedly connected to the upper end of the connector (42).

5. The hub unit bearing press-fitting device according to claim 1, characterized in that, The upper end of the threaded push rod (2) is provided with a loading cap (21), and the lower end of the threaded push rod (2) is provided with a pressing part (22). The pressing part (22) is a conical structure, and the tip of the pressing part (22) contacts the pressing block (3).

6. The hub unit bearing press-fitting device according to claim 5, characterized in that, The pressing block (3) has a disc-shaped structure, and both the upper and lower surfaces of the pressing block (3) are circular structures. The diameter of the upper surface of the pressing block (3) is larger than the diameter of the lower surface.

7. The hub unit bearing press-fitting device according to claim 6, characterized in that, A limiting groove (31) is provided at the center of the upper surface of the pressure block (3), and the lower end of the threaded push rod (2) can be limited and accommodated in the limiting groove (31); the bottom surface of the limiting groove (31) is a funnel-shaped structure, and the tip of the pressing part (22) of the threaded push rod (2) is in pressure contact with the recessed end of the bottom surface of the limiting groove (31).

8. The hub unit bearing press-fitting device according to any one of claims 1-7, characterized in that, The bracket (1) has a straight structure, and the two sliding grooves (12) are respectively set at both ends of the bracket (1), and both are U-shaped opening grooves.

9. The hub unit bearing press-fitting device according to any one of claims 1-7, characterized in that, The bracket (1) has a straight structure, and both of the sliding grooves (12) have elongated hole structures.

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