Bearing test apparatus

Abstract

The present invention relates to a bearing test apparatus. The bearing test apparatus according to an embodiment comprises: a bearing arrangement part having a test bearing disposed on one surface; a shaft member rotated by a driving unit and including a pressing flange part that faces the bearing arrangement part along the axial direction; and a shaft moving part that accommodates one end of the shaft member and is moved toward the other end of the shaft member. The shaft member is moved toward the other end by the movement of the shaft moving part so that the pressing flange part presses the test bearing of the bearing arrangement part along the axial direction.

Description

Bearing testing device

[0001] The present disclosure relates to a bearing test apparatus, and relates to an apparatus for testing the performance of a bearing supporting a rotating body.

[0002] A bearing is a means of supporting the load applied to a rotating body while allowing the body to rotate. The rotating body can perform rotational motion by withstanding its own weight and external loads through the bearing.

[0003] Additionally, the bearing may include balls, rollers, etc. to allow rotation of the rotating body when supporting the rotating body, and the bearing may be provided with a lubricant as needed to reduce friction generated when the rotating body rotates.

[0004] Meanwhile, the bearing's ability to withstand loads transmitted from rotating parts, such as shafts, can be crucial. For example, if a bearing cannot withstand the load transmitted from a shaft, mechanical damage, such as bearing breakage or failure to rotate the shaft smoothly, may occur.

[0005] As above, the bearing's ability to withstand load, i.e., load capacity, may be important, and it is necessary to evaluate the load capacity or test whether it is normal, and a bearing testing device for this purpose may be provided.

[0006] The above test device needs to stably and efficiently transmit a load to the shaft member corresponding to the rotating body and effectively measure the load capacity of the bearing.

[0007] The embodiments aim to provide a bearing testing device capable of effectively transmitting a load to a bearing through a shaft member.

[0008] In addition, the embodiments aim to provide a bearing testing device capable of simply and efficiently controlling the load transmitted to the bearing.

[0009] A bearing testing device according to one embodiment includes a bearing arrangement, a shaft member, and a shaft moving part.

[0010] The bearing arrangement section may have a test bearing arranged on one side. The shaft member may be rotated by the driving member and may include a pressure flange section facing the bearing arrangement section along the axial direction.

[0011] The shaft moving portion accommodates one end of the shaft member and can move toward the other end of the shaft member. By moving the shaft moving portion, the shaft member moves toward the other end, thereby allowing the pressurized flange portion to pressurize the test bearing of the bearing arrangement portion along the axial direction.

[0012] The housing has the bearing arrangement, the shaft member, and the shaft moving portion positioned therein. The shaft moving portion can move along the axial direction within the housing.

[0013] One embodiment may further include a temperature measuring unit provided in the bearing arrangement or the test bearing to measure the temperature of the test bearing.

[0014] The above end of the above shaft member can be fixed in position with respect to the above shaft moving part within the above shaft moving part.

[0015] The above-mentioned shaft moving part may include a moving case and a support bearing. The moving case has one end of the shaft member positioned therein and can move along the axial direction.

[0016] A support bearing is provided inside the moving case and can support the shaft member in the axial direction. The support bearing includes a support surface that contacts either the moving case or the shaft member, and the support surface can extend obliquely with respect to the axial direction.

[0017] The above support surface may include an outer support surface corresponding to one surface of the support bearing facing the moving case and an inner support surface corresponding to the other surface facing the shaft member.

[0018] The above support bearing may include a first support bearing and a second support bearing. The first support bearing may be formed to be inclined so that the support surface moves away from one end of the shaft member as it moves away from the shaft member.

[0019] The second support bearing may be spaced apart from the first support bearing along the axial direction, and may be formed to be inclined so that the support surface becomes closer to the shaft member as it gets farther away from one end of the shaft member.

[0020] At least one of the above moving case and the above shaft member may include a support flange portion that protrudes between the first support bearing and the second support bearing and is supported along the axial direction by the first support bearing and the second support bearing.

[0021] One embodiment may further include a pressing portion that pushes the axial moving portion toward the other end of the axial member.

[0022] The above pressurizing portion may include a rotating member that extends parallel to the axial direction and is rotatable, and the degree to which the pressurizing portion pushes the axial moving portion may change depending on the amount of rotation of the rotating member.

[0023] The above pressurizing part may further include a pressurizing block that is screw-connected to the rotating member and supports the axially moving part in the axial direction, and the pressurizing block may be moved in the axial direction by rotation of the rotating member to move the axially moving part.

[0024] The above-mentioned pressure block may be provided to measure the moving force provided to the axial moving portion. The pressure portion may further include an elastic member positioned between the inner surface of the housing and the pressure block to press the pressure block in the axial direction.

[0025] The other end of the above shaft member can be connected to a driving unit that provides rotational force to the above shaft member.

[0026] The other end of the above shaft member can be connected to the driving shaft of the driving unit through a connecting portion.

[0027] The housing may have a driving chamber in which a driving unit that provides rotational force to the shaft member is arranged, a test chamber in which the bearing arrangement is located, a moving chamber in which the shaft moving unit is located, and a pressurizing chamber in which a pressurizing unit that moves the shaft moving unit is located, arranged along the axial direction.

[0028] The above housing communicates with the interior of the shaft moving part and may include an injection hole for injecting lubricant.

[0029] The above-mentioned axial moving part may include a moving case in which the one end of the axial member is positioned and moves along the axial direction, and the moving case may include a communication hole facing the injection hole, and the injection hole may communicate with the inside of the pressurized case through the communication hole.

[0030] A supply hole for supplying lubricant to the test bearing may be provided on the above-mentioned one surface of the above-mentioned bearing arrangement.

[0031] The embodiments can provide a bearing testing device capable of effectively transmitting a load to a bearing through a shaft member.

[0032] Additionally, the embodiments can provide a bearing testing device capable of simply and efficiently controlling the load transmitted to the bearing.

[0033] Fig. 1 is a drawing showing a bearing testing device according to one embodiment.

[0034] Fig. 2 is a drawing showing the inside of a test chamber of a bearing test device according to one embodiment.

[0035] Figure 3 is a drawing showing a bearing arrangement and a test bearing located inside a test chamber in one embodiment.

[0036] Fig. 4 is a drawing showing the inside of a moving chamber of a bearing test device according to one embodiment.

[0037] Fig. 5 is a drawing showing an injection hole of a housing and a communication hole of a moving case in a bearing test device according to one embodiment.

[0038] Fig. 6 is a drawing showing a rotation prevention member of a housing and an extension groove of a moving case in a bearing test device according to one embodiment.

[0039] Fig. 7 is a drawing showing the inside of a pressurized chamber in a bearing test device according to one embodiment.

[0040] Fig. 8 is a drawing showing a rotating member of a pressurized portion in a bearing testing device according to one embodiment.

[0041] Fig. 9 is a drawing showing a pressure block of a pressure part in a bearing test device according to one embodiment.

[0042] Fig. 10 is a drawing showing an elastic member of a pressurized portion in a bearing test device according to one embodiment.

[0043] Fig. 11 is a drawing showing a driving unit and a coupling unit of a bearing testing device according to one embodiment.

[0044] Fig. 12 is a drawing showing a lubricant flow path of a bearing testing device according to one embodiment.

[0045] Below, with reference to the attached drawings, an embodiment is described in detail so that a person having ordinary skill in the art to which the present disclosure pertains can easily implement the present disclosure.

[0046] However, the present disclosure may be implemented in various different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present disclosure in the drawings, parts irrelevant to the description have been omitted, and similar parts have been designated with similar reference numerals throughout the specification.

[0047] In this specification, duplicate descriptions of identical components are omitted.

[0048] Additionally, when a component is referred to herein as being "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may be other components present in between. Conversely, when a component is referred to herein as being "directly connected" or "directly connected" to another component, it should be understood that there are no other components present in between.

[0049] Additionally, the terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the present disclosure.

[0050] Also, in this specification, singular expressions may include plural expressions unless the context clearly indicates otherwise.

[0051] In addition, in this specification, it should be understood that terms such as “include” or “have” are intended to specify only the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, and do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0052] Also, in this specification, the term 'and / or' includes a combination of multiple listed items or any item among multiple listed items. In this specification, 'A or B' can include 'A', 'B', or 'both A and B'.

[0053] Fig. 1 illustrates a bearing testing device (1) according to one embodiment. The bearing testing device (1) includes a housing (100). The housing (100) can form the exterior of the bearing testing device (1), and a space in which various components are positioned can be defined inside.

[0054] At least one of a driving unit (600), a bearing arrangement unit (200), a shaft member (300), a shaft moving unit (400), and a pressure unit (500) may be located inside the housing (100).

[0055] A test bearing (10) may be placed in the bearing arrangement (200). The test bearing (10) is a subject whose load capacity is tested through a bearing testing device (1) according to one embodiment. The types of test bearings (10) may vary.

[0056] For example, the test bearing (10) may be a radial bearing that withstands a load transmitted in the radial direction of the shaft member (300), or may be a thrust bearing that withstands a load transmitted in the axial direction of the shaft member (300).

[0057] As above, the types of test bearings (10) may vary, but for convenience of explanation, the following description will be based on the test bearing (10) being a thrust bearing that withstands a load transmitted along the axial direction of the shaft member (300), as illustrated in FIG. 1.

[0058] The shaft member (300) may be positioned at least partially inside the housing (100), may be rotated by the driving member (600), and may include a pressure flange member (310) facing the bearing arrangement member (200) along the axial direction.

[0059] In addition, one end (301) of the shaft member (300) can be accommodated inside the shaft moving part (400). That is, the shaft moving part (400) accommodates one end (301) of the shaft member (300) and can move toward the other end (302) of the shaft member (300).

[0060] The moving force of the above-mentioned shaft moving part (400) acts as a load on the shaft member (300), and this load can be transmitted to the test bearing (10) through the pressurized flange part (310).

[0061] The pressurizing portion (500) can push the shaft moving portion (400) toward the other end (302) of the shaft member (300). That is, the pressurizing portion (500) can provide a moving force for the shaft moving portion (400) to move, and the moving force can be transmitted to the shaft member (300) and become a load transmitted to the test bearing (10).

[0062] The housing (100) may be divided into a plurality of chambers. For example, in one embodiment, the housing (100) may include at least one or more of a driving chamber (110) in which a driving unit (600) providing rotational force to the shaft member (300) is disposed, a test chamber (130) in which the bearing arrangement unit (200) is located, a moving chamber (140) in which the shaft moving unit (400) is located, and a pressurizing chamber (150) in which a pressurizing unit (500) for moving the shaft moving unit (400) is located, all of which may be disposed along the axial direction.

[0063] The chambers of the housing (100) may be structurally separated from each other by partition walls, or may be conceptually distinguished based on the differences in the objects placed inside. For example, as illustrated in FIG. 1, the test chamber (130) where the bearing arrangement unit (200) is positioned and the moving chamber (140) where the shaft movement unit (400) is placed may have a communicating space that is not separated from each other by partition walls, and may be conceptually distinguished based on the objects placed in the space.

[0064] Fig. 2 illustrates the interior of a test chamber (130) of a housing (100). Referring to Fig. 2, a pressurized flange portion (310) corresponding to a portion of a shaft member (300) and a bearing arrangement portion (200) may be arranged inside the housing (100).

[0065] The pressurized flange portion (310) may have an approximately ring shape that protrudes from the body of the shaft member (300) along the radial direction of the shaft member (300) and extends along the rotational direction of the shaft member (300).

[0066] The bearing arrangement (200) can be positioned so that one surface on which the test bearing (10) is seated faces the pressurized flange portion (310). Accordingly, the test bearing (10) can be positioned between the pressurized flange portion (310) and the bearing arrangement (200) and be pressurized by the pressurized flange portion (310).

[0067] The pressing force by the above-mentioned pressing flange portion (310) can correspond to the load applied to the test bearing (10), and the load capacity of the test bearing (10) can be measured by adjusting the load.

[0068] The pressing force provided to the test bearing (10) by the pressurized flange portion (310) can correspond to the load or moving force applied to the shaft member (300). The aforementioned shaft moving portion (400) can accommodate one end (301) of the shaft member (300) and can have a moving force to move toward the other end (302) of the shaft member (300).

[0069] The above moving force can be transmitted along the shaft member (300) and the pressure flange portion (310) to become a load acting on the test bearing (10) in the axial direction of the shaft member (300). That is, by the movement of the shaft moving portion (400), the shaft member (300) moves toward the other end (302), so that the pressure flange portion (310) can pressurize the test bearing (10) of the bearing arrangement portion (200) along the axial direction.

[0070] Figure 3 shows a test bearing (10) placed on a bearing arrangement (200) and a pressurizing surface (315) of a pressurizing flange portion (310) that pressurizes the test bearing (10).

[0071] The above test bearing (10) may be a thrust bearing and may have a ring shape extending along the rotational direction of the shaft member (300).

[0072] One side of the test bearing (10) facing the pressurized flange portion (310) may be an axial support surface (15) that supports the pressurized flange portion (310) and allows rotation of the pressurized flange portion (310), and the opposite side of the test bearing (10) may be a bearing support surface that is supported by being seated on one side of the bearing arrangement portion (200).

[0073] The test bearing (10) can withstand a load transmitted from the pressurized flange portion (310) through the shaft support surface (15) and allow rotation of the pressurized flange portion (310). The load transmitted from the pressurized flange portion (310) can correspond to the moving force of the aforementioned shaft moving portion (400), that is, the pressing force applied axially to the shaft member (300) by the aforementioned pressurized portion (500), and the load capacity of the test bearing (10) can be measured while adjusting the load by the pressurized flange portion (310).

[0074] The load capacity measurement method of the above test bearing (10) can be varied. For example, when the power consumed when driving the target rotational speed of the shaft member (300) while increasing the load by the pressurized flange portion (310), such as the current value, differs by a certain level or more from the reference value, the load capacity of the test bearing (10) can be measured by measuring the load applied to the test bearing (10).

[0075] Additionally, in one embodiment, the test bearing (10) may be equipped with a temperature measuring unit (250). The temperature measuring unit (250) may be equipped in the bearing arrangement unit (200) or the test bearing (10) to measure the temperature of the test bearing (10).

[0076] The temperature measuring unit (250) can be provided in various types. The temperature measuring unit (250) can be provided in contact with or inserted into the test bearing (10) as illustrated in FIG. 3 to measure the temperature of the test bearing (10), or can be provided in the bearing arrangement unit (200) to measure the temperature of the test bearing (10).

[0077] One embodiment measures the temperature measured by the temperature measuring unit (250) and the load applied to the test bearing (10) by the pressurized flange unit (310), and can also measure the load capacity of the test bearing (10).

[0078] For example, the temperature measured by the temperature measuring unit (250) can be measured while increasing the load applied to the test bearing (10) through the aforementioned pressurizing unit (500) and / or the shaft moving unit (400), and the load capacity of the test bearing (10) can be evaluated based on the load at which the temperature becomes higher than a preset limit temperature.

[0079] Meanwhile, if the test bearing (10) requires a lubricant such as oil, in one embodiment, a supply hole (205) for supplying the lubricant may be formed in the bearing arrangement (200).

[0080] The above supply hole (205) may be formed on one surface of the bearing arrangement (200) where the test bearing (10) is seated, and may be connected to the inside of the test chamber (130) of the housing (100) so that the lubricant existing inside the test chamber (130) may flow, or may be connected to a hole provided in the housing (100) so that the lubricant supplied from the outside of the housing (100) may flow through the hole.

[0081] The lubricant provided to the test bearing (10) through the supply hole (205) can be provided to the test bearing (10) for the operation of the test bearing (10), and the test bearing (10) can support the pressurized flange portion (310) in a lubricant supply environment.

[0082] The bearing arrangement (200) may be placed directly on the inner surface of the housing (100), or may be placed on a support pad on the inner surface of the housing (100) and a lubricant path formed therein.

[0083] Figure 4 illustrates an axial moving part (400) provided inside a moving chamber (140) of a housing (100).

[0084] The axial moving part (400) can be provided to accommodate one end (301) of the axial member (300) and to be movable along the axial direction of the axial member (300). The axial moving part (400) can be moved along the axial direction in a space defined in the moving chamber (140) of the housing (100). The inner surface of the moving chamber (140) of the housing (100) can form a path along which the axial moving part (400) slides.

[0085] The position of the above-mentioned end (301) of the above-mentioned shaft member (300) can be fixed with respect to the shaft moving part (400) within the shaft moving part (400). That is, the shaft member (300) and the shaft moving part (400) are linked to each other, and the shaft member (300) can move together with the movement of the shaft moving part (400).

[0086] That is, the moving force acting on the axial moving part (400) may be the moving force of the axial member (300). The moving force of the axial member (300) may be the load acting on the pressurized flange part (310) described above.

[0087] The shaft moving unit (400) may include a moving case (410) and a support bearing (450). The moving case (410) may have a space defined therein in which one end (301) of the shaft member (300) is accommodated. The one end (301) of the shaft member (300) is positioned inside the moving case (410) and can move along the axial direction. In Fig. 4, the moving directions of the shaft moving unit (400) and the shaft member (300) are indicated by arrows.

[0088] The moving case (410) has one surface facing the test chamber (130) penetrated by the shaft member (300) so that one end (301) of the shaft member (300) can be positioned inside. The peripheral surface of the moving case (410) can face the inner surface of the moving chamber (140) in the housing (100), and the moving case (410) can slide and move along a path defined by the inner surface of the moving chamber (140).

[0089] The support bearing (450) is provided inside the moving case (410) and can support the shaft member (300) in the axial direction. For example, the support bearing (450) can support the shaft member (300) toward the other end (302) of the shaft member (300).

[0090] When the moving case (410) is moved, the shaft member (300) is supported by the support bearing (450) and can be moved together with the moving case (410).

[0091] The above support bearing (450) may be of various types. For example, the above support bearing (450) may be a thrust bearing that axially supports the shaft member (300).

[0092] Meanwhile, the support bearing (450) may be a rolling bearing type that can support both the axial load of the shaft member (300) and the radial load of the shaft member (300).

[0093] In one embodiment, the support bearing (450) may include a support surface (451) that contacts either the moving case (410) or the shaft member (300). The support bearing (450) may allow rotation of either the moving case (410) or the shaft member (300) with respect to the contacting either one of the moving case (410) or the shaft member (300) at the support surface (451).

[0094] The above support surface (451) can extend obliquely with respect to the axial direction. For example, as illustrated in FIG. 4, the distance of the support surface (451) relative to the center of the shaft member (300) along the axial direction of the shaft member (300) can be changed.

[0095] When the above support surface (451) is parallel to the axial direction, the support bearing (450) has difficulty supporting the axial load of the shaft member (300), and when the above support surface (451) is perpendicular to the axial direction, the support bearing (450) has difficulty supporting the radial load of the shaft member (300).

[0096] In one embodiment, the support surface (451) of the support bearing (450) extends obliquely with respect to the axial direction, thereby supporting the axial member (300) in the axial direction and moving it together with the axial moving part (400) while providing support for axial alignment of the axial member (300).

[0097] The support surface (451) of the above support bearing (450) may be a surface of the support bearing (450) facing the inner side of the movable case (410). In this case, the support bearing (450) may be rotationally constrained with respect to the shaft member (300), and the support surface (451) may allow relative rotation between the shaft member (300) and the movable case (410).

[0098] Meanwhile, the support bearing (450) may include a first support bearing (460) and a second support bearing (470).

[0099] The first support bearing (460) may be formed to be inclined so that the support surface (451) moves away from the shaft member (300) as it moves away from one end (301) of the shaft member (300). The support surface (451) of the first support bearing (460) may be referred to as a first support surface (461), and when the first support surface (461) comes into contact with the inner surface of the moving case (410), the first support bearing (460) may support the shaft member (300) toward the other end (302) of the shaft member (300) via the first support surface (461).

[0100] When the first support surface (461) is in contact with the shaft member (300), the first support bearing (460) can support the shaft member (300) toward one end (301) of the shaft member (300) through the first support surface (461).

[0101] The second support bearing (470) may be formed to be inclined so that the support surface (451) gets closer to the shaft member (300) as it gets farther away from the end (301) of the shaft member (300). The support surface (451) of the second support bearing (470) may be referred to as a second support surface (471), and when the second support surface (471) comes into contact with the inner surface of the moving case (410), the second support bearing (470) may support the shaft member (300) toward the end (301) of the shaft member (300) via the second support surface (471).

[0102] When the second support surface (471) is in contact with the shaft member (300), the second support bearing (470) can support the shaft member (300) toward the other end (302) of the shaft member (300) through the second support surface (471).

[0103] In one embodiment, the shaft member (300) can be supported and fixed in a first direction parallel to the axial direction and a second direction opposite to the first direction with respect to the moving case (410) by a first support bearing (460) and a second support bearing (470).

[0104] That is, the shaft member (300) is constrained from moving along the axial direction relative to the moving case (410) and can move together with the moving case (410). The first support bearing (460) and the second support bearing (470) can be spaced apart from each other along the axial direction.

[0105] Meanwhile, at least one of the moving case (410) and the shaft member (300) may include a support flange portion (320). The support flange portion (320) may protrude between the first support bearing (460) and the second support bearing (470) and may be supported along the axial direction by the first support bearing (460) and the second support bearing (470).

[0106] When the support flange portion (320) is provided on either of the above-described moving case (410) and the above-described shaft member (300), the rotation of the support bearing (450) with respect to either of the above-described ones can be restricted. That is, relative rotation between either of the above-described ones and the support bearing (450) may not occur.

[0107] In addition, the support bearing (450) may have the aforementioned support surface (451) formed on one side facing the other of the moving case (410) and the shaft member (300). That is, the support surface (451) may be provided to come into contact with the other one and allow rotation of the other one.

[0108] Meanwhile, the support surface (451) may include an outer support surface (452) corresponding to one surface of the support bearing (450) facing the moving case (410) and an inner support surface (453) corresponding to the other surface facing the shaft member (300).

[0109] The outer support surface (452) of the support bearing (450) can be in contact with the inner surface of the moving case (410) and can be provided at an angle, and the inner support surface (453) can be in contact with the outer surface of the shaft member (300) and can be provided at an angle.

[0110] The support bearing (450) may be provided so as to allow rotation of an object with which at least one of the outer support surface (452) and the inner support surface (453) is in contact. For example, the support bearing (450) may be provided so that the outer support surface (452) allows rotation of the moving case (410), the inner support surface (453) may be provided so as to allow rotation of the shaft member (300), or both the outer support surface (452) and the inner support surface (453) may be provided so as to allow rotation.

[0111] Since the support bearing (450) is provided with both the outer support surface (452) and the inner support surface (453) in an inclined form, the axial fixing force between the moving case (410) and the shaft member (300) can be strengthened.

[0112] In one embodiment, the shaft member (300) may include a first bearing contact portion (330) that contacts the inner support surface (453) of the support bearing (450), and the moving case (410) may include a second bearing contact portion (430) that contacts the outer support surface (452) of the support bearing (450).

[0113] The first bearing contact portion (330) may be provided to surround the outer surface of the shaft member (300) inside the moving case (410), and the second bearing contact portion (430) may be provided on the inner surface of the moving case (410).

[0114] The inner support surface (453) of the support bearing (450) is in contact with the first bearing contact portion (330) and can allow rotation or be restricted from rotation with respect to the first bearing contact portion (330), and the outer support surface (452) is in contact with the second bearing contact portion (430) and can allow rotation or be restricted from rotation of the second bearing contact portion (430).

[0115] The shaft member (300) and the moving case (410) are provided with a first bearing contact portion (330) and a second bearing contact portion (430) for contacting the support bearing (450), so that the first bearing contact portion (330) and the second bearing contact portion (430) can be conveniently replaced during durability.

[0116] For example, the first bearing contact portion (330) of the shaft member (300) may be provided in the form of a sleeve surrounding the outer circumference of the shaft member (300), and the shaft member (300) may be inserted into the hollow space. The support bearing (450) may be provided in a form coupled to the first bearing contact portion (330), and a fixing member (480) may be provided at one end of the shaft member (300) to prevent the first bearing contact portion (330) from being detached.

[0117] When the support bearing (450) or the first bearing contact portion (330) is to be replaced, the fixing member (480) of the shaft member (300) is separated from the shaft member (300), and then the first bearing contact portion (330) can be simply separated and replaced from the shaft member (300).

[0118] Figure 5 shows an injection hole (160) provided in a housing (100) and a communication hole (415) provided in a moving case (410) of an axial moving part (400).

[0119] As described above, the shaft moving part (400) and the shaft member (300) allow rotation of the shaft member (300) through the support bearing (450), and axial positional constraints can be achieved between them. In addition, in order to reduce frictional force generated in the process in which the support bearing (450) allows rotation of the shaft member (300), a lubricant can be supplied to the support bearing (450).

[0120] The housing (100) communicates with the interior of the shaft moving part (400) and may include an injection hole (160) for injecting a lubricant. The lubricant supplied through the injection hole (160) may be supplied to the interior of the shaft moving part (400), i.e., the interior of the moving case (410), to lubricate the support bearing (450).

[0121] In addition, the moving case (410) of the axis moving part (400) may be provided with a communication hole (415) facing the injection hole (160). The injection hole (160) may communicate with the inside of the pressurized case through the communication hole (415).

[0122] In one embodiment, the moving case (410) moves axially with respect to the housing (100), but the range of movement of the moving case (410) may be limited to a range in which at least a portion of the communication hole (415) and the injection hole (160) face each other and communicate with each other.

[0123] In Fig. 5, the flow path of the lubricant flowing into the housing (100) through the injection hole (160) is indicated by an arrow. The lubricant injected through the injection hole (160) can be supplied into the interior of the movable case (410) through the communication hole (415) of the movable case (410), and can be discharged from the movable case (410) through the support bearing (450) inside the movable case (410). The lubricant discharged from the movable case (410) can be delivered to the test chamber (130).

[0124] FIG. 6 illustrates an embodiment in which a rotation prevention member (170) is provided in the housing (100) to prevent rotation of the shaft moving part (400).

[0125] In one embodiment, the axial moving part (400) allows rotation of the axial member (300), but the rotation of the axial moving part (400) can be allowed to move axially within the housing (100) while being constrained.

[0126] The housing (100) may be provided with a rotation preventing member (170) to prevent rotation of the shaft moving part (400), i.e., rotation of the moving case (410). The rotation preventing member (170) may include a protrusion or the like protruding from the inner surface of the housing (100) toward the moving case (410).

[0127] The above rotation prevention member (170) may be a protrusion protruding from the inner surface of the housing (100), or a bolt protruding into the housing (100) by penetrating the housing (100).

[0128] The moving case (410) may include an extension groove (417) into which the anti-rotation member (170) is inserted. The extension groove (417) may have the shape of a groove recessed toward the shaft member (300) on the outer surface of the moving case (410).

[0129] The above extension groove (417) may extend along the axial direction to allow axial movement of the moving case (410). The range of movement of the axial moving part (400) may be limited to the extension length of the above extension groove (417).

[0130] The width of the extension groove (417) according to the rotational direction of the above-mentioned shaft member (300) may correspond to the width of the above-mentioned anti-rotation member (170). The end of the anti-rotation member (170) may be inserted into the extension groove (417), and accordingly, the rotation of the moving case (410) with respect to the housing (100) may be restricted and the axial movement may be permitted.

[0131] Meanwhile, FIG. 7 illustrates a pressurized chamber (150) of a housing (100) and a pressurized portion (500) provided in the pressurized chamber (150) in a bearing test device (1) according to one embodiment.

[0132] The pressurizing portion (500) can push the shaft moving portion (400) in the axial direction of the shaft member (300). The pressing force that the pressurizing portion (500) applies to the shaft moving portion (400) can become the moving force of the shaft moving portion (400) and the shaft member (300). The pressurizing portion (500) can be located at least partially inside the housing (100), but can also be located outside the housing (100) if necessary.

[0133] In one embodiment, the pressurizing member (500) may be positioned within the pressurizing chamber (150) of the housing (100), and a portion thereof may be exposed to the outside of the housing (100) and manipulated by a user. The user may adjust the pressing force with which the pressurizing member (500) presses the axial moving member (400) by manipulating the portion of the pressurizing member (500) exposed to the outside of the housing (100).

[0134] FIG. 8 illustrates a rotating member (510) of a pressurizing member (500). Specifically, the pressurizing member (500) may include a rotating member (510) that extends parallel to the axial direction and is rotatable, and the degree to which the pressurizing member (500) pushes the axial moving member (400) may vary depending on the amount of rotation of the rotating member (510).

[0135] The rotating member (510) may have a shape extending along the axial direction of the shaft member (300). The rotating member (510) may be provided to be rotatable around an axis parallel to the shaft member (300). However, the extension direction or rotation center of the rotating member (510) may be varied as needed.

[0136] The rotating member (510) may include a head portion (512) and a body portion (514). The body portion (514) may extend parallel to the shaft member (300), and the head portion (512) may be positioned at one end of the body portion (514). The head portion (512) may have a larger diameter than the body portion (514) and may be exposed to the outside of the housing (100).

[0137] The body portion (514) may penetrate the housing (100) and at least a portion thereof may be positioned inside the housing (100). The head portion (512) may be positioned at least a portion thereof outside the housing (100).

[0138] The housing (100) can have one end open, and the open end can be covered by a cover part (180). That is, the housing (100) can be closed by coupling the cover part (180) with one end open.

[0139] The body part (514) of the rotary member (510) can penetrate the cover part (180) and be positioned in the space inside the housing (100), that is, inside the pressurized chamber (150) of the housing (100). The rotary member (510) penetrating the cover part (180) in a direction parallel to the axial direction of the shaft member (300) can rotate around the axial direction.

[0140] In one embodiment, the pressing force of the pressurizing member (500) that pressurizes the axial moving member (400) can change depending on the amount of rotation of the rotating member (510). The method by which the pressing force changes depending on the amount of rotation of the rotating member (510) can vary.

[0141] For example, the rotary member (510) may be a bolt having a thread and may be screw-connected to the housing (100). Accordingly, the length of the rotary member (510) protruding into the housing (100) may change depending on the amount of rotation of the rotary member (510), and as the protruding length increases, the pressing force on the shaft moving part (400) may increase.

[0142] In addition, the rotary member (510) can simply penetrate the housing (100) and can be screw-connected to other components provided in addition to the pressurizing chamber (150), such as a pressurizing block (520) to be described later. In this case, the position of the pressurizing block (520), etc., with respect to the axial direction can be changed depending on the amount of rotation of the rotary member (510), and the pressurizing force on the axial moving part (400) can also be changed based on this change in position.

[0143] Meanwhile, the housing (100) may be provided with a position fixing member (540) that allows rotation of the rotating member (510) while fixing the position based on the axial direction. For example, the rotating member (510) may penetrate the housing (100) so that the head portion (512) is exposed to the outside of the housing (100), and the position fixing member (540) may be coupled to the housing (100) so as to cover the head portion (512) while exposing a portion of the head portion (512).

[0144] The head portion (512) can be positioned on the cover portion (180) of the housing (100), and the position fixing portion (540) can be coupled to the cover portion (180) so as to cover the head portion (512). The position fixing portion (540) can expose a part of the head portion (512) to the outside, and the user can rotate the rotating member (510) through the exposed portion of the head portion (512).

[0145] One embodiment controls the load applied to the bearing through a pressurizing member (500) having a rotating member (510), thereby enabling the load to be controlled more simply and conveniently than when using a hydraulic device or the like. Furthermore, it is efficient in terms of maintenance, such as by simply replacing the rotating member (510) or the like.

[0146] Furthermore, one embodiment can directly transfer the pressing force of the pressing portion (500) to the moving force of the shaft member (300) through the shaft moving portion (400), and thus the pressing portion (500) can be designed with a simple and efficient structure and the load can be effectively transferred to the shaft member (300).

[0147] FIG. 9 illustrates a press block (520) among the pressurizing portion (500). In one embodiment, the pressurizing portion (500) may include the pressurizing block (520), and the pressurizing block (520) may directly or indirectly push the axial moving portion (400) along the axial direction.

[0148] The pressure block (520) is screw-connected to the rotating member (510) and can support the shaft moving part (400) in the axial direction. The pressure block (520) can move in the axial direction by the rotation of the rotating member (510) to move the shaft moving part (400).

[0149] The pressurized block (520) may include a screw-joint portion (650) (525) for screw-joining with the rotating member (510).

[0150] The rotating member (510) may be provided with a screw portion (516) having screw threads on at least a portion of the body portion (514). The screw-joining portion (650) (525) may be provided in the form of a hole, into which the screw portion (516) of the rotating member (510) may be inserted, and a screw groove may be formed on the inner circumferential surface for screw-joining the screw threads of the screw portion (516).

[0151] As described above, the position of the rotary member (510) can be fixed based on the axial direction through a position fixing member (540), etc., and as the rotary member (510) rotates, the axial position of the pressure block (520) screw-connected to the rotary member (510) can change.

[0152] One embodiment can efficiently control the load transmitted to the shaft member (300) in a mechanical manner by using the rotating member (510), and by pressing the shaft moving part (400) through the pressing block (520), a more uniform pressing force can be provided to the shaft moving part (400) and structural stability can be improved.

[0153] Meanwhile, the pressure block (520) may be provided to measure the moving force provided to the shaft moving unit (400). For example, the pressure block (520) may be provided as a load cell type capable of measuring the load applied to the shaft moving unit (400).

[0154] In one embodiment, a load is transmitted to the shaft moving part (400) and the shaft member (300) through a pressure block (520), and the magnitude of the load is measured through the pressure block (520), thereby enabling more precise load control and efficient evaluation of the test bearing (10).

[0155] Figure 10 illustrates an elastic member (530) provided in a pressurized chamber (150). The elastic member (530) is positioned between the inner surface of the housing (100) and the pressurized block (520) and can provide elastic force to the pressurized block (520).

[0156] Specifically, the pressurizing portion (500) may include an elastic member (530) positioned between the inner surface of the housing (100) and the pressurizing block (520) to pressurize the pressurizing block (520) in the axial direction.

[0157] The elastic force provided by the above elastic member (530) can provide a basic external force directed toward the other end (302) of the shaft member (300) to the pressurizing block (520), as well as the shaft moving part (400), the shaft member (300), etc., thereby generating a holding force for the entire structure, eliminating tolerances between components, and effectively maintaining the rotating member (510) of the pressurizing part (500), the pressurizing block (520), etc. in the correct position.

[0158] The above elastic member (530) can provide elastic force to the pressure block (520) through the elastic support plate (535). For example, the elastic member (530) can have one end positioned on the cover portion (180) of the housing (100) and can provide elastic force to push the pressure block (520).

[0159] An elastic support plate (535) may be positioned on one side of the pressure block (520) facing the elastic member (530), and the other end of the elastic member (530) may be in contact with the elastic support plate (535) to provide elastic force. The elastic member (530) may provide elastic force to the pressure block (520) more uniformly through the elastic support plate (535).

[0160] Meanwhile, FIG. 11 shows a driving chamber (110) equipped with a driving unit (600) and a coupling chamber (120) where a shaft member (300) and a driving shaft (610) are coupled.

[0161] The driving unit (600) may correspond to a motor that operates by consuming power. In addition, the other end (302) of the shaft member (300) may be connected to the driving unit (600) that provides the rotational force of the shaft member (300). Furthermore, the other end (302) of the shaft member (300) may be coupled to the driving shaft (610) of the driving unit (600) through a coupling portion (650).

[0162] The above-mentioned shaft member (300) can be used in various actual environments. For example, the shaft member (300) can be connected to an impeller rotating in a fluid, and thus an axial external force can be applied, and an axial external force can be applied for various other reasons.

[0163] In this case, if the external force is directly transmitted to the driving unit (600), damage to the driving unit (600) or a decrease in efficiency may occur, and damage such as bending of the shaft member (300) itself may be caused by the external force.

[0164] Accordingly, the load applied to the shaft member (300) needs to be borne by the test bearing (10) placed in the bearing arrangement (200), and accordingly, in one embodiment, the load capacity of the test bearing (10) can be evaluated by measuring the load and temperature applied to the test bearing (10).

[0165] Meanwhile, the shaft member (300) may be a driving shaft (610) directly connected to the driving unit (600), or may be coupled to the driving shaft (610) extending from the driving unit (600) through a coupling portion (650). The coupling portion (650) may be provided in the coupling chamber (120) of the housing (100), and may couple one end of the driving shaft (610) and the other end (302) of the shaft member (300) within the coupling chamber (120).

[0166] Due to the clearance between components existing in the driving unit (600) or the tolerance occurring in the connecting portion (650), the shaft member (300) can be moved axially by a predetermined distance through the shaft moving portion (400), but can be supported in one direction by the test bearing (10).

[0167] Meanwhile, Fig. 12 illustrates a lubricant flow path of a bearing test device (1) according to one embodiment.

[0168] As described above, a bearing test device (1) including a rotating body such as a shaft member (300) may be provided with a lubricant such as oil for cooling or lubrication of friction occurring during rotation.

[0169] The housing (100) forming the exterior of the bearing test device (1) may be formed with at least one hole for supplying lubricant from the exterior to the interior of the housing (100). The injection hole (160) described above may be included in the at least one hole.

[0170] The flow path of the lubricant based on the above injection hole (160) is as follows.

[0171] The lubricant injected through the injection hole (160) can flow into the interior of the moving case (410) through the communication hole (415) formed in the moving case (410) of the shaft moving part (400). The lubricant can lubricate the space between the moving case (410) and the inner surface of the housing (100) and can have a lubricating effect on the support bearing (450) described above.

[0172] The lubricant of the moving case (410) can be discharged from the moving case (410) and flow into the test chamber (130). A test bearing (10) and a pressurized flange part (310) may be present inside the test chamber (130), and the lubricant can be discharged from the test chamber (130) while providing lubrication to the test bearing (10) and the pressurized flange part (310).

[0173] Meanwhile, the housing (100) may include a lubricant discharge port (190) that is connected to the interior thereof and through which lubricant is discharged. The lubricant passing through the test chamber (130) may be discharged to the outside of the housing (100) through the lubricant discharge port (190).

[0174] The lubricant supplied through the supply hole (205) of the aforementioned bearing arrangement (200) can also be discharged from the test chamber (130) and discharged to the outside of the housing (100) through the lubricant discharge unit (190).

[0175] In addition, the housing (100) may be arranged with a test chamber (130) below the moving chamber (140) based on the ground so that the lubricant can flow from the moving chamber (140) to the lubricant discharge unit (190) through the self-weight of the lubricant, and the lubricant discharge unit (190) may be positioned at the bottom of the test chamber (130) or below the test chamber (130).

[0176] Although the present disclosure has been illustrated and described with respect to specific embodiments, it will be apparent to those skilled in the art that the present disclosure may be variously improved and modified without departing from the technical spirit of the present disclosure as defined by the following claims.

[0177] - Explanation of symbols -

[0178] 1: Bearing testing device 10: Test bearing

[0179] 15: Axial support surface 100: Housing

[0180] 110: Drive chamber 120: Combination chamber

[0181] 130: Test chamber 140: Mobile chamber

[0182] 150: Pressurized chamber 160: Injection hole

[0183] 170: Anti-rotation member 180: Cover part

[0184] 190: Lubricant discharge section 200: Bearing arrangement section

[0185] 205: Supply hole 250: Temperature measurement unit

[0186] 300: Axial member 310: Pressurized flange part

[0187] 320: Support flange part 330: First bearing contact part

[0188] 400: Axial moving part 410: Moving case

[0189] 415: Chimney hole 417: Extension home

[0190] 430: Second bearing contact part 450: Support bearing

[0191] 451: Support surface 460: First support bearing

[0192] 470: Second support bearing 480: Fixed member

[0193] 500: Pressurized part 510: Rotating member

[0194] 520: Pressurized block 525: Screw joint

[0195] 530: Elastic member 540: Position fixing member

[0196] 600: Drive unit 610: Drive shaft

[0197] 650: Joint

Claims

1. Bearing arrangement section where test bearings are arranged on one side; A shaft member that rotates by a driving member and includes a pressurized flange portion facing the bearing arrangement portion along the axial direction; and It includes an axial moving part that receives one end of the above axial member and moves toward the other end of the above axial member; A bearing testing device in which the shaft member is moved to the other end side by the movement of the shaft moving part, thereby causing the pressurized flange part to pressurize the test bearing of the bearing arrangement part along the axial direction.

2. In paragraph 1, Further comprising a housing in which the bearing arrangement, the shaft member and the shaft moving part are positioned inside; The above-mentioned axial moving part is a bearing testing device that can move along the axial direction inside the housing.

3. In paragraph 1, A bearing test device further comprising a temperature measuring unit provided in the bearing arrangement unit or the test bearing to measure the temperature of the test bearing.

4. In paragraph 1, A bearing testing device in which the position of the above-mentioned end of the above-mentioned shaft member is fixed within the above-mentioned shaft moving part with respect to the above-mentioned shaft moving part.

5. In paragraph 1, The above axial moving part is, A moving case in which the above-mentioned end of the above-mentioned shaft member is positioned inside and moves along the above-mentioned axial direction; and A bearing testing device comprising a support bearing provided inside the moving case and supporting the shaft member in the axial direction.

6. In paragraph 5, The above support bearing includes a support surface that comes into contact with one of the moving case and the shaft member, A bearing test device in which the above support surface extends obliquely with respect to the axial direction.

7. In paragraph 6, A bearing testing device in which the above support surface includes an outer support surface corresponding to one surface of the above support bearing facing the moving case and an inner support surface corresponding to the other surface facing the shaft member.

8. In paragraph 6, The above support bearing is, A first support bearing formed so that the support surface is inclined so as to move away from the shaft member as it moves away from one end of the shaft member; and A bearing testing device comprising: a first support bearing and a second support bearing spaced apart from the first support bearing along the axial direction, and formed so that the support surface is inclined so that it gets closer to the shaft member as it gets farther from one end of the shaft member.

9. In paragraph 8, At least one of the above moving case and the above shaft member, A bearing testing device including a support flange portion protruding between the first support bearing and the second support bearing and supported along the axial direction by the first support bearing and the second support bearing.

10. In paragraph 1, A bearing testing device further comprising a pressing portion that pushes the above-mentioned axial moving portion toward the other end of the above-mentioned axial member.

11. In paragraph 10, The above pressurized part, It includes a rotating member extending parallel to the above axis and being rotatable; A bearing testing device in which the degree to which the pressurizing part pushes the axial moving part changes depending on the amount of rotation of the rotating member.

12. In paragraph 11, The above pressurized part, It further includes a pressure block that is screw-connected to the above rotating member and supports the shaft moving part in the axial direction; A bearing test device in which the above pressure block moves in the axial direction by rotation of the above rotating member to move the above axial moving part.

13. In paragraph 12, The above pressurized block is a bearing testing device provided to measure the moving force provided to the above shaft moving part.

14. In paragraph 12, Further comprising a housing in which the bearing arrangement, the shaft member and the shaft moving part are positioned inside; The above pressurized part, A bearing testing device further comprising an elastic member positioned between the inner surface of the housing and the pressure block and pressurizing the pressure block in the axial direction.

15. In paragraph 1, A bearing testing device in which the other end of the above shaft member is connected to a driving unit that provides rotational force to the above shaft member.

16. In paragraph 15, A bearing testing device in which the other end of the above shaft member is connected to the driving shaft of the driving unit through a connecting portion.

17. In paragraph 1, Further comprising a housing in which the bearing arrangement, the shaft member and the shaft moving part are positioned inside; The above housing is a bearing test device in which a driving chamber in which a driving unit providing rotational force to the shaft member is arranged, a test chamber in which the bearing arrangement unit is located, a moving chamber in which the shaft moving unit is located, and a pressurizing chamber in which a pressurizing unit that moves the shaft moving unit is located are arranged along the axial direction.

18. In paragraph 1, Further comprising a housing in which the bearing arrangement, the shaft member and the shaft moving part are positioned inside; A bearing testing device in which the housing communicates with the inside of the shaft moving part and includes an injection hole for injecting lubricant.

19. In paragraph 18, The above axial moving part is, A moving case in which the above-mentioned end of the shaft member is positioned inside and moves along the axial direction; The above moving case includes a communication hole facing the injection hole, A bearing test device in which the above injection hole communicates with the inside of the pressurized case through the above communication hole.

20. In paragraph 1, A bearing test device in which a supply hole for supplying lubricant to the test bearing is provided on the above-mentioned one surface of the above-mentioned bearing arrangement.

Images