A wheel hub bearing connection fixture

Abstract

The present invention relates to the technical field of jigs and fixtures, and in particular, to a hub bearing connection jig and fixture, which comprises: a connecting shaft assembly and a lower connecting plate; the lower connecting plate is used to fix the lower side of the hub bearing, the connecting shaft assembly is connected to the inner ring body of the hub bearing, and is used to apply a test force thereto, the connecting shaft assembly comprises an upper connecting plate and a connecting shaft, the upper connecting plate comprises a first connecting plate body in the form of an inverted truncated cone, the lower side of the first connecting plate body abuts against the upper top surface of the inner ring body, a connecting hole extending in a vertical direction is arranged at the center of the first connecting plate body, the connecting hole is coaxially arranged with the center hole of the hub bearing, the connecting shaft comprises a main body shaft, the diameter of the main body shaft is the same at all places, and the main body shaft is used to pass through the connecting hole and the center hole accordingly. In this way, the problem that the hub bearing connection jig and fixture is easily damaged during the experiment is solved.

Description

Technical Field

[0001] The invention relates to the technical field of tooling fixtures, and in particular to a wheel hub bearing connection tooling fixture. Background Art

[0002] Automobile wheels need to meet a series of complex requirements, especially the spoke or wheel disc area, which will be subjected to the pressure exerted by the rotational bending load. For example, the wheel hub bearing, including the bolts connected to the wheel hub bearing, is also subjected to a large pressure exerted by the cyclic bending moment load during the driving process of the car. Therefore, in mass production, it is necessary to use relevant test equipment to perform rotational bending resonance simulation tests on the bearings.

[0003] In the prior art, the hub bearing is used to connect the fixture to the bearing and the testing machine during the rotational bending test so as to apply the corresponding force to complete the experiment. However, in the current fixture, the flange connection shaft, the main load-bearing component, is often damaged, especially the journal is prone to breakage, which not only affects the continuity of the experiment, but also causes a lot of economic losses. Summary of the invention

[0004] In order to solve the problem that the wheel hub bearing connection fixture is easily damaged during the experiment, the present invention provides a wheel hub bearing connection fixture, including: a connecting shaft assembly and a lower connecting plate; the lower connecting plate is used to fix the lower side of the wheel hub bearing, the connecting shaft assembly is connected to the inner ring body of the wheel hub bearing, and is used to apply a test force thereto, the connecting shaft assembly includes an upper connecting plate and a connecting shaft, the upper connecting plate includes a first connecting plate body in the form of an inverted frustum, the lower side of the first connecting plate body abuts against the upper top surface of the inner ring body, a connecting hole extending in a vertical direction is provided at the center of the first connecting plate body, the connecting hole is coaxially arranged with the center hole of the wheel hub bearing, the connecting shaft includes a main body shaft, the diameter of the main body shaft is the same at all places, and the main body shaft is used to pass through the connecting hole and the center hole in turn.

[0005] In some embodiments, the connecting shaft also includes a fixing portion arranged on the upper side of the main body shaft, and a fixing groove is also arranged on the top of the upper connecting plate. The fixing portion is arranged to extend in a radial direction and protrude from the outer peripheral surface of the main body shaft. The fixing groove can accommodate the fixing portion, and the lower side surface of the fixing portion abuts against the bottom surface of the fixing groove.

[0006] In some embodiments, the fixing portion is further provided with a first fixing hole penetrating the fixing portion, and the fixing bolt can pass through the first fixing hole and be connected to the upper connecting plate.

[0007] In some embodiments, a cross-sectional shape of the fixing groove matches that of the fixing portion, and a height of the fixing groove is greater than or equal to a height of the fixing portion.

[0008] In some embodiments, the upper connecting disk further includes a second connecting disk body, which is in the shape of a disk and is disposed on a side of the upper connecting disk away from the hub bearing, and a diameter of the second connecting disk body is greater than a diameter of a top surface of the first connecting disk body.

[0009] In some embodiments, the first connection disk body is coaxially arranged with the second connection disk body.

[0010] In some embodiments, the body shaft is interference fit with the connecting hole and the center hole respectively.

[0011] In some embodiments, an operating groove is provided at the bottom of the lower connecting plate, the operating groove has an opening facing downward, a supporting portion is provided at the top of the operating groove, and the wheel hub bearing is fixed to the supporting portion.

[0012] In some embodiments, a receiving hole is provided at the center position of the support portion, a step portion is provided in the receiving hole, the outer ring body of the hub bearing has an extension portion extending downward, the extension portion is provided with a reducing section, the reducing section can be supported on the step portion, and the inner side wall of the receiving hole is in contact with the outer side wall of the extension portion.

[0013] In some embodiments, a connecting portion is further provided at the lower end of the connecting shaft, and the connecting portion can pass through the center hole, and the connecting portion is used to connect with the fixing member, and the top surface of the fixing member can abut against the lower side surface of the wheel hub bearing.

[0014] In order to solve the problem that the hub bearing connection fixture is easily damaged during the experiment, the present invention has the following advantages:

[0015] Although the flange connecting shaft integrated in the traditional scheme has a simple structure, its variable diameter structure causes severe stress concentration at the variable diameter point during processing. Therefore, it is easily damaged during the experiment, which leads to the interruption of the entire experiment. However, in the above scheme of the present application, the originally integrated flange connecting shaft is replaced by the connecting shaft assembly in the present application, and the connecting shaft assembly includes an upper connecting disk and a connecting shaft, so that the upper connecting disk is used to connect with the testing machine and transmit the force generated by the testing machine to the inner ring body of the wheel hub bearing below and the connecting shaft at the center thereof, and the main shaft of the connecting shaft passes through the connecting hole and the center hole in turn, so that the upper connecting disk can be connected The transmitted force is transmitted to the center hole to complete the experiment. Since the main shaft of the connecting shaft is a uniform cylindrical structure, the stress concentration caused by the need to change the diameter can be effectively avoided during the processing. Therefore, it has better structural strength and force-bearing capacity than the integrated structure, and can effectively reduce the incidence of fracture of the flange connecting shaft during the experiment. In addition, since the experimental fixture is a high-precision component, its production cost is relatively high. When the integrated structure breaks, the entire component needs to be scrapped and replaced. However, the setting of the connecting shaft assembly in the above scheme can only replace some parts even if some parts are damaged, thereby reducing the experimental cost and improving the utilization rate of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a hub bearing connection fixture according to an embodiment is shown;

[0017] Figure 2 A schematic cross-sectional structure diagram of a hub bearing connection fixture according to an embodiment is shown;

[0018] Figure 3 A schematic structural diagram of an upper connecting plate according to an embodiment is shown;

[0019] Figure 4 A schematic structural diagram of a connecting shaft according to an embodiment is shown;

[0020] Figure 5 A schematic cross-sectional structure diagram of a lower connecting plate according to an embodiment is shown.

[0021] 10-connecting shaft assembly; 11-upper connecting plate; 111-first connecting plate body; 112-second connecting plate body; 113-fixing groove; 114-center hole; 12-connecting shaft; 121-main body shaft; 122-fixing part; 1221-first fixing hole; 123-connecting part; 20-lower connecting plate; 21-operating groove; 211-support part; 212-accommodating hole; 2121-step part; 30-fixing piece; 40-wheel hub bearing; 41-inner ring body; 42-outer ring body; 50-upper connecting plate. DETAILED DESCRIPTION

[0022] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0023] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0024] This embodiment discloses a hub bearing 40 connection fixture, such as Figure 1-5As shown, it may include: a connecting shaft 12 component 10 and a lower connecting plate 20; the lower connecting plate 20 is used to fix the lower side of the hub bearing 40, the connecting shaft 12 component 10 is connected to the inner ring body 41 of the hub bearing 40, and is used to apply a test force thereto, the connecting shaft 12 component 10 includes an upper connecting plate 11 and a connecting shaft 12, the upper connecting plate 11 includes a first connecting plate body 111 in the form of an inverted frustum, the lower side of the first connecting plate body 111 abuts against the upper top surface of the inner ring body 41, a connecting hole extending in a vertical direction is provided at the center of the first connecting plate body 111, the connecting hole is coaxially arranged with the center hole 114 of the hub bearing 40, the connecting shaft 12 includes a main body shaft 121, the diameter of the main body shaft 121 is the same everywhere, and the main body shaft 121 is used to pass through the connecting hole and the center hole 114 in turn.

[0025] It should be noted that the hub bearing connection fixture of the present application is mainly used for the rotation bending test of the second-generation hub bearing. During the experiment, the hub bearing 40 needs to be fixed on the fixture, and the force of the test machine is transmitted to the hub bearing 40 to be tested through the flange connection shaft 12 arranged on the upper side. The hub bearing 40 includes an outer ring body 42 and an inner ring body 41. A sliding structure such as a ball is arranged between the outer ring body 42 and the inner ring body 41, so that the inner ring body 41 can rotate relative to the outer ring body 42. During the experiment, the output end of the motor is rotated to drive the test machine to generate a bending moment force, which is transmitted to the hub bearing 40 through the hub bearing 40 connection fixture, thereby completing the experiment.

[0026] During the experiment, although the flange connecting shaft 12 integrally arranged in the traditional scheme has a simple structure, due to its variable diameter structure (the connection between the part of the centrally arranged shaft extending into the wheel hub bearing 40 and the upper end), a relatively serious stress concentration phenomenon occurs at the variable diameter part during the processing. Therefore, it is easy to be damaged during the experiment, which leads to the interruption of the entire experiment. However, in the above scheme of the present application, the flange connecting shaft 12 originally integrally arranged is replaced by the connecting shaft 12 assembly 10 of the present application. The connecting shaft 12 assembly 10 includes an upper connecting plate 11 and a connecting shaft 12, so that the upper connecting plate 11 is used to connect with the testing machine and transmit the force generated by the testing machine to the inner ring body 41 of the wheel hub bearing 40 below and the connecting shaft 12 at the center thereof. The main body shaft 12 of the connecting shaft 12 1 passes through the connecting hole and the center hole 114 in sequence, so that the force transmitted by the upper connecting plate 11 can be transmitted to the center hole 114 to complete the experiment. Since the main body shaft 121 of the connecting shaft 12 is a uniform cylindrical structure, the stress concentration caused by the need to change the diameter can be effectively avoided during the processing. Therefore, it has better structural strength and force bearing capacity than the integrated structure, and can effectively reduce the incidence of fracture of the flange connecting shaft 12 during the experiment. In addition, since the experimental fixture is a high-precision component, its production cost is relatively high. When the integrated structure breaks, the entire component needs to be scrapped and replaced. However, the setting of the connecting shaft 12 assembly 10 in the above scheme can only replace some parts even if some parts are damaged, thereby reducing the experimental cost and improving the utilization rate of parts.

[0027] The inverted truncated cone structure of the upper connecting disk 11 can have a larger upper side surface, which is used to fit with the upper connecting plate 50 of the testing machine. The testing machine transmits the force to the upper connecting disk 11 through the upper connecting plate 50. The larger upper side area can make the force transmission process more sufficient and direct. Although the upper connecting plate 50 is required to be coaxially arranged with the upper connecting disk 11 during installation, it is difficult to completely ensure that there is no deviation in actual conditions, and the deviation may cause a certain deviation when the force is applied. The larger upper side surface is used for force transmission, so that even if a small deviation occurs, the larger upper side surface can make the force situation more consistent, reducing the uneven force caused by installation deviation. Specifically, the upper side surface of the truncated cone structure used in the present application is circular because the structure is relatively easy to process, but a similar central symmetrical figure can also be used.

[0028] In order to make the connecting shaft 12 and the upper connecting plate 11 form a whole, it is easy to install. Figure 1 , Figure 2 as well as Figure 4As shown, the connecting shaft 12 also includes a fixing portion 122 arranged on the upper side of the main body shaft 121, and a fixing groove 113 is also arranged on the top of the upper connecting plate 11. The fixing portion 122 is arranged to extend in the radial direction and protrude from the outer peripheral surface of the main body shaft 121. The fixing groove 113 can accommodate the fixing portion 122, and the lower side surface of the fixing portion 122 abuts against the bottom surface of the fixing groove 113.

[0029] By using the fixing groove 113 and the fixing part 122 to cooperate, the connecting shaft 12 can directly use the lower side of the fixing part 122 to abut against the bottom surface of the fixing groove 113, and with the help of gravity, the connecting shaft 12 can cooperate with the upper connecting plate 11 without external force, which is convenient for installation. Furthermore, in order to prevent the connection shaft 12 from breaking, the fixing groove 113 and the fixing part 122 can be set to adopt matching shapes. Although a stress concentration position is generated at the intersection of the fixing part 122 and the main body shaft 121 due to the setting of the fixing part 122, since this position is far away from the wheel hub bearing 40 and this position is at the position covered by the upper connecting plate 11, that is, the fixing part 122 and the main body shaft 121 can both be subjected to the lateral force applied by the upper connecting plate 11, therefore, there will not be a huge difference in the force conditions here, and therefore, this place is not easy to break.

[0030] In order to make the upper connecting plate 11 and the connecting shaft 12 form a more tightly connected integral structure, as Figure 1-4 As shown, the fixing portion 122 is further provided with a first fixing hole 1221 penetrating the fixing portion 122, and the fixing bolt can pass through the first fixing hole 1221 and be connected to the upper connecting plate 11. The fixing portion 122 is connected to the bottom surface of the fixing groove 113 by bolt connection, so that they are connected into a complete structure, and since the force is transmitted to the central connecting shaft 12 through the upper connecting plate 11 during the experiment, the setting of the bolt can also play a role in transmitting force.

[0031] Furthermore, the cross-sectional shape of the fixing groove 113 matches the fixing portion 122, and the height of the fixing groove 113 is greater than or equal to the height of the fixing portion 122. The height of the fixing groove 113 is set to be greater than or equal to the height of the fixing portion 122, which can prevent the fixing portion 122 from being higher than the upper side of the upper connecting plate 11, thereby affecting the operation and force of the upper connecting plate 11.

[0032] In order to further increase the force transmission surface between the upper connecting plate 11 and the testing machine, Figure 2 , Figure 3 As shown, the upper connecting disk 11 also includes a second connecting disk body 112 , which is disc-shaped and disposed on a side of the upper connecting disk 11 away from the hub bearing 40 , and a diameter of the second connecting disk body 112 is greater than a diameter of a top surface of the first connecting disk body 111 .

[0033] More specifically, a through hole for the bolt to pass through can be provided on the second connection plate body 112, and a bolt hole can be provided on the upper connection plate 50 of the test machine accordingly, so as to connect the upper connection plate 11 with the test machine by installing bolts. And because the entire upper connection plate 11 is made of metal, and the first connection plate body 111 is a truncated cone body, which is overall heavy and lacks a transport structure that can bear force, the provision of the second connection plate body 112 can also facilitate the transport and installation operations of the staff.

[0034] In order to balance the force, as an optional implementation, the first connection disc body 111 and the second connection disc body 112 are coaxially arranged.

[0035] In addition, in order to prevent the upper connecting plate 11 and the body shaft 121, and the body shaft 121 and the wheel hub bearing 40 from shaking relative to each other during the experiment, causing collisions and leading to inaccurate experimental data, the body shaft 121 is respectively interference-fitted with the connecting hole and the center hole 114. After the interference fit, the contacting surfaces between the upper connecting plate 11 and the body shaft 121, and the body shaft 121 and the wheel hub bearing 40 can all transmit the force, preventing uneven force.

[0036] The hub bearing 40 is usually provided with a flange structure for mounting and fixing on the outer ring body 42, and the hub bearing 40 can be fixed on the lower connecting plate 20 by using the flange structure. Figure 1 , Figure 2 as well as Figure 5 As shown, an operating groove 21 is provided at the bottom of the lower connecting plate 20 . The operating groove 21 has an opening facing downward. A supporting portion 211 is provided at the top of the operating groove 21 . The wheel hub bearing 40 is fixed to the supporting portion 211 .

[0037] The setting of the operating groove 21, on the one hand, prevents the bolt heads used to fix the flange structure from being directly exposed to the outside, so that the bottom plane of the lower connecting plate 20 can be stably fixed on the lower connecting plate of the testing machine. On the other hand, the operating groove 21 also leaves operating space for the staff.

[0038] At the same time, if Figure 5 As shown, a receiving hole 212 is provided at the center position of the support portion 211, a step portion 2121 is provided in the receiving hole 212, the outer ring body 42 of the hub bearing 40 has an extension portion extending downward, the extension portion is provided with a reducing section, the reducing section can be supported on the step portion 2121, and the inner side wall of the receiving hole 212 is in contact with the outer side wall of the extension portion.

[0039] Due to the structural characteristics of the hub bearing 40, the downwardly extending extension makes it difficult for the hub bearing 40 to be directly and stably fixed, and the arrangement of the receiving hole 212 prevents the extension from affecting the installation of the hub bearing 40. The arrangement of the step portion 2121 can also play a role in positioning and limiting.

[0040] In order to further transmit the force of the testing machine to the wheel hub bearing 40, as shown in FIG. Figure 2 as well as Figure 5 As shown, a connecting portion 123 is further provided at the lower end of the connecting shaft 12 . The connecting portion 123 can pass through the central hole 114 . The connecting portion 123 is used to connect with the fixing member 30 . The top surface of the fixing member 30 can abut against the lower side surface of the wheel hub bearing 40 .

[0041] In this embodiment, the hub bearing 40 can be clamped between the upper connection plate 11 and the fixing member 30 by using the connection portion 123 and the fixing member 30. Specifically, the fixing member 30 can be an appropriate embodiment, and it only needs to be able to cooperate with the connection portion 123 and have a certain locking force. As a preferred embodiment, the connection portion 123 can be provided with an external thread, and the fixing member 30 can be a nut matching the connection portion 123, and cooperate with the upper connection plate 11 by means of the locking force of the thread to fix the hub bearing 40 in the middle.

[0042] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. A hub bearing connection fixture, characterized in that: The hub bearing connection fixture comprises: Connecting shaft assembly and lower connecting plate; The lower connecting plate is used to fix the lower side of the wheel hub bearing, and the connecting shaft assembly is connected to the inner ring body of the wheel hub bearing and is used to apply a test force thereto. The connecting shaft assembly includes an upper connecting plate and a connecting shaft, wherein the upper connecting plate includes a first connecting plate body in the form of an inverted truncated cone, wherein the lower side of the first connecting plate body abuts against the upper top surface of the inner ring body, wherein a connecting hole extending in a vertical direction is arranged at the center of the first connecting plate body, wherein the connecting hole is coaxially arranged with the center hole of the hub bearing, and wherein the connecting shaft includes a body shaft, wherein the diameter of the body shaft is the same at all places, and the body shaft is used to pass through the connecting hole and the center hole in turn; The connecting shaft further comprises a fixing portion arranged on the upper side of the main body shaft, a fixing groove is further arranged on the top of the upper connecting plate, the fixing portion is arranged to extend in the radial direction and protrude from the outer peripheral surface of the main body shaft, the fixing groove can accommodate the fixing portion, and the lower side surface of the fixing portion abuts against the bottom surface of the fixing groove; The fixing portion is further provided with a first fixing hole penetrating the fixing portion, and a fixing bolt can pass through the first fixing hole and be connected to the upper connecting plate; The main body shaft is interference fit with the connecting hole and the center hole respectively.

2. A hub bearing connection fixture according to claim 1, characterized in that: The cross-sectional shape of the fixing groove matches the fixing portion, and the height of the fixing groove is greater than or equal to the height of the fixing portion.

3. The hub bearing connection fixture according to claim 1, characterized in that: The upper connection disk also includes a second connection disk body, which is in the shape of a disk and is arranged on a side of the upper connection disk away from the wheel hub bearing. The diameter of the second connection disk body is greater than the diameter of the top surface of the first connection disk body.

4. A hub bearing connection fixture according to claim 3, characterized in that: The first connection disc body and the second connection disc body are coaxially arranged.

5. The hub bearing connection fixture according to claim 1, characterized in that: An operating groove is arranged at the bottom of the lower connecting plate, and the operating groove has an opening arranged downward. A supporting portion is arranged at the top of the operating groove, and the wheel hub bearing is fixed to the supporting portion.

6. A hub bearing connection fixture according to claim 5, characterized in that: A receiving hole is provided at the center position of the support portion, a step portion is provided in the receiving hole, the outer ring body of the hub bearing has an extension portion extending downward, the extension portion is provided with a reducing section, the reducing section can be supported on the step portion, and the inner side wall of the receiving hole is in contact with the outer side wall of the extension portion.

7. The wheel hub bearing connection fixture according to claim 1, characterized in that: The lower end of the connecting shaft is also provided with a connecting portion, which can pass through the central hole and is used to be connected to a fixing member, and the top surface of the fixing member can abut against the lower side surface of the wheel hub bearing.

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