Joint bearing radial play detection device

Abstract

This invention provides a device for detecting radial clearance of a spherical plain bearing, comprising a clamp assembly, a push-pull spindle, a measuring element, and a push-pull assembly. The clamp assembly is used to fix the spherical plain bearing; the push-pull spindle can be inserted into the inner ball of the spherical plain bearing; the measuring element is connected to the push-pull spindle and is arranged radially along the spherical plain bearing; the push-pull assembly is connected to the end of the measuring element away from the push-pull spindle, and can push and pull the measuring element radially along the spherical plain bearing. The radial clearance of the spherical plain bearing can be obtained by displaying the numerical value of the push-pull movement distance of the inner ball through the measuring element. Since the push-pull assembly can drive the push-pull spindle and the inner ball to move radially to both sides, the radial clearance dimensions of the outer ball and the inner ball on both sides can be detected, improving detection accuracy and reducing detection error. Moreover, this detection device has a simple overall structure, ingenious design, low manufacturing cost, and is easy to operate.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and specifically to a device for detecting radial clearance of spherical bearings. Background Technology

[0002] A spherical plain bearing is a special type of sliding bearing, mainly composed of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface. Spherical plain bearings can withstand large loads, and depending on their different types and structures, they can withstand radial loads, axial loads, or combined radial and axial loads.

[0003] The clearance of a spherical plain bearing refers to the gap between the inner and outer balls, including radial clearance and axial clearance. It is the amount of movement between the inner and outer balls when one of the inner or outer balls is fixed and the other ball moves radially or axially, without the bearing being installed on a shaft or in a bearing housing. Radial clearance is a critical parameter for spherical plain bearings, significantly impacting their fatigue life, temperature rise, noise, vibration, and other performance characteristics.

[0004] Existing radial clearance testing devices for spherical plain bearings employ a method of fixing the inner ball of the bearing, then pressing one side of the inner wall of the outer ball against the outer wall of the inner ball. The bearing body is then driven to move the outer ball radially until the other side of the outer ball's inner wall presses against the outer wall of the inner ball, thus measuring the radial clearance. However, this method can only measure the sum of the radial clearances of the outer and inner balls, and cannot measure the radial clearance dimensions on either side of the outer and inner balls separately. This results in low accuracy and a tendency to produce significant errors. Furthermore, such devices are complex in structure, with cumbersome installation and measurement procedures, making them inconvenient to operate. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the shortcomings of the existing radial clearance detection methods for spherical plain bearings, such as low accuracy, easy to produce errors, and complex detection device structure and cumbersome installation and measurement process, so as to provide a radial clearance detection device for spherical plain bearings with high detection accuracy, simple structure and easy operation.

[0006] To address the above problems, the present invention provides a radial clearance detection device for spherical plain bearings, comprising:

[0007] Clamping assembly for securing spherical bearings;

[0008] The push-pull spindle can be inserted into the inner ball of the spherical bearing;

[0009] The measuring component is connected to the push-pull spindle and is arranged radially along the spherical bearing;

[0010] The push-pull assembly, connected to the end of the measuring element away from the push-pull spindle, can push and pull the measuring element radially along the spherical bearing.

[0011] Preferably, the push-pull assembly includes a pushing component, a pulling component, and a lever. The pulling component is connected to the measuring element, and the lever is rotatable in a horizontal plane. One end of the lever is connected to the measuring element, and the other end is connected to the pushing component.

[0012] Preferably, the fulcrum of the lever is positioned close to the measuring element.

[0013] Preferably, it also includes a limiting component for restricting the direction of movement of the push-pull spindle.

[0014] Preferably, the device also includes an adapter, which includes a first connecting part and two second connecting parts. The two second connecting parts are arranged radially parallel to the spherical bearing and are respectively connected to both ends of the push-pull spindle. The two ends of the first connecting part are respectively connected to the two second connecting parts, and the side of the first connecting part away from the push-pull spindle is connected to the measuring element.

[0015] Preferably, the limiting component includes two limiting plates, which are respectively disposed close to the outer side of the second connecting part.

[0016] Preferably, the clamping assembly includes a base and a positioning element. The base has a connecting hole formed thereon. The spherical bearing is detachably connected to the connecting hole. The positioning element can enter the connecting hole from the side away from the spherical bearing and abut against the spherical bearing.

[0017] Preferably, the base includes a horizontal plate and a first vertical plate and a second vertical plate vertically disposed on the horizontal plate. The first vertical plate and the second vertical plate are arranged parallel to each other and perpendicular to the radial direction of the spherical bearing. The spherical bearing is disposed on the first vertical plate, and the measuring element is moved and disposed on the second vertical plate.

[0018] As a preferred measuring tool, a digital micrometer is used.

[0019] Preferably, the base plate is also included, and the clamping assembly and push-pull assembly are all mounted on the base plate.

[0020] The present invention has the following advantages:

[0021] 1. The present invention provides a radial clearance detection device for a spherical plain bearing, comprising a clamp assembly, a push-pull spindle, a measuring element, and a push-pull assembly, wherein the clamp assembly is used to fix the spherical plain bearing; the push-pull spindle can be inserted into the inner ball of the spherical plain bearing; the measuring element is connected to the push-pull spindle and is arranged radially along the spherical plain bearing; the push-pull assembly is connected to the end of the measuring element away from the push-pull spindle, and can push and pull the measuring element radially along the spherical plain bearing. In use, the spherical plain bearing to be tested is first fixed on the fixture assembly. The push-pull spindle is then inserted through the inner ball of the spherical plain bearing. After insertion, the push-pull spindle is connected to the measuring component. The operator can move the measuring component radially along the spherical plain bearing by operating the push-pull assembly. The measuring component moves the push-pull spindle, which in turn moves the inner ball of the spherical plain bearing radially within the bearing. The measuring component displays the value of the push-pull movement distance of the inner ball, thus obtaining the radial clearance of the spherical plain bearing. Since the push-pull assembly can move the push-pull spindle and the inner ball radially to both sides, the radial clearance dimensions of the outer and inner balls can be detected, improving detection accuracy and reducing detection errors. Moreover, this detection device has a simple overall structure, ingenious design, low manufacturing cost, and is easy to operate.

[0022] 2. The present invention provides a radial clearance detection device for a spherical bearing, wherein the push-pull assembly includes a pushing component, a pulling component, and a lever. The pulling component is connected to the measuring element, and the lever can rotate in a horizontal plane. One end of the lever is connected to the measuring element, and the other end is connected to the pushing component. During operation, the measuring element can be pushed or pulled by pulling the pushing component and the pulling component respectively, thereby driving the inner ball of the spherical bearing to move through the push-pull spindle. In the present invention, the fulcrum of the lever is set close to the measuring element, which makes it easier for the operator to operate the pushing component and can change the direction of the force. The operator can complete the push-pull operation of the measuring element by applying the pulling force to the pushing component and the pulling component respectively. In the present invention, both the pushing component and the pulling component are springs. Such a pushing component and pulling component have a simple structure, are easy to implement, and are easy to operate.

[0023] 3. The radial clearance detection device for spherical bearings provided by the present invention also includes a limiting component for limiting the movement direction of the push-pull spindle, which can limit the direction of the push-pull spindle to remain unchanged when it pushes and pulls, so that the push-pull spindle is always perpendicular to the radial direction of the spherical bearing, thereby enabling the push-pull spindle to always drive the inner ball to move in the radial direction, ensuring more accurate radial clearance detection.

[0024] 4. The present invention provides a radial clearance detection device for spherical plain bearings, wherein the clamp assembly includes a base and a positioning member. The base is formed with a connecting hole, and the spherical plain bearing is detachably connected to the connecting hole. The positioning member can enter the connecting hole from the side away from the spherical plain bearing and abut against the spherical plain bearing. In the present invention, the connecting hole is a threaded hole, the spherical plain bearing is provided with an external thread, and the positioning member is a stud. After the spherical plain bearing is screwed into the threaded hole, the stud is screwed into the other end of the threaded hole until the stud abuts against the spherical plain bearing, further restricting the axial position of the spherical plain bearing, preventing the spherical plain bearing from shifting during push-pull clearance detection and affecting the clearance detection effect, thus ensuring detection accuracy. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the overall structure of the radial clearance detection device for spherical bearings of the present invention is shown.

[0027] Figure 2 A schematic diagram of the overall structure of the radial clearance detection device for spherical bearings of the present invention is shown from another perspective.

[0028] Figure 3 A cross-sectional view of the overall structure of the radial clearance detection device for spherical bearings of the present invention is shown.

[0029] Explanation of reference numerals in the attached drawings: 100, spherical bearing; 1001, inner ball; 1, clamp assembly; 11, base; 1101, first support plate; 1102, second support plate; 12, positioning component; 2, push-pull spindle; 3, measuring component; 4, push-pull assembly; 41, thrust component; 42, pull component; 43, lever; 44, bracket; 45, operating handle; 5, limiting assembly; 501, limiting plate; 502, first oblong hole; 6, adapter; 61, first connecting part; 62, second connecting part; 7, base plate; 701, guide plate; 702, second oblong hole. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] like Figures 1-3 As shown, this embodiment provides a radial clearance detection device for a spherical plain bearing, including a clamp assembly 1, a push-pull spindle 2, a measuring element 3, and a push-pull assembly 4. The clamp assembly 1 is used to fix the spherical plain bearing 100. The push-pull spindle 2 can be inserted into the inner ball 1001 of the spherical plain bearing 100. The measuring element 3 is connected to the push-pull spindle 2 and is arranged radially along the spherical plain bearing 100. The push-pull assembly 4 is connected to the end of the measuring element 3 away from the push-pull spindle 2 and can push and pull the measuring element 3 radially along the spherical plain bearing 100.

[0035] In use, the spherical plain bearing 100 to be tested is first fixed on the fixture assembly 1. The push-pull spindle 2 is then inserted through the inner ball 1001 of the spherical plain bearing 100. After insertion, the push-pull spindle 2 is connected to the measuring element 3. The operator can drive the measuring element 3 to move radially along the spherical plain bearing 100 by operating the push-pull assembly 4. The measuring element 3 drives the push-pull spindle 2 to move, which in turn drives the inner ball 1001 of the spherical plain bearing 100 to move radially within the spherical plain bearing 100. The measuring element 3 displays the value of the push-pull movement distance of the inner ball 1001, thus obtaining the radial clearance of the spherical plain bearing 100. Since the push-pull assembly 4 can drive the push-pull spindle 2 and the inner ball 1001 to move radially to both sides, the radial clearance size of the outer ball and the inner ball 1001 on both sides can be detected, improving the detection accuracy and reducing the detection error. Moreover, this detection device has a simple overall structure, ingenious design, low manufacturing cost, and is easy to operate.

[0036] Specifically, the fixture assembly 1 includes a base 11 and a positioning member 12. The base 11 has a connecting hole formed on it. The spherical bearing 100 is detachably connected to the connecting hole. The positioning member 12 can enter the connecting hole from the side away from the spherical bearing 100 and abut against the spherical bearing 100, so that the position of the spherical bearing is more stable and will not shift, thus ensuring the detection accuracy.

[0037] In this embodiment, the connecting hole is a threaded hole, the spherical bearing 100 is provided with an external thread, and the positioning member 12 is a stud. After the spherical bearing 100 is screwed into the threaded hole, the stud is screwed into the other end of the threaded hole away from the spherical bearing until the stud abuts against the spherical bearing 100, further restricting the position of the spherical bearing 100 and preventing the problem of affecting the radial clearance accuracy due to the overall displacement of the spherical bearing 100 when pushing and pulling to detect clearance.

[0038] Furthermore, as can be seen from the figure, the base 11 is generally U-shaped, including a horizontal plate and two parallel first support plates 1101 and second support plates 1102. The first support plates 1101 and second support plates 1102 are spaced apart and are arranged radially perpendicular to the spherical bearing 100. The connecting hole is formed on the first support plate 1101, and the spherical bearing 100 is set on the first support plate 1101 through the connecting hole. The measuring element 3 passes through the second support plate 1102 and can move radially. The connecting hole and the measuring element 3 are arranged coaxially to ensure that the position of the spherical bearing 100 will not be skewed during the push-pull measurement, thus ensuring the detection accuracy.

[0039] Specifically, in this embodiment, the measuring component 3 is a digital micrometer, which provides accurate numerical measurement and allows for quick reading of the clearance value of the spherical bearing after the push-pull operation is completed.

[0040] Specifically, the push-pull assembly 4 includes a pushing component 41, a pulling component 42, and a lever 43. The pulling component 42 is connected to the measuring element 3, and the lever 43 can rotate in the horizontal plane. One end of the lever 43 is connected to the measuring element 3, and the other end is connected to the pushing component 41. Both the pushing component 41 and the pulling component 42 have operating handles 45. During operation, pulling the pushing component 41 and the pulling component 42 respectively will drive the lever 43 to rotate, which will correspondingly push or pull the measuring element 3. The measuring element 3 will drive the push-pull spindle 2 to move radially together, and the push-pull spindle 2 will in turn drive the inner ball 1001 of the spherical bearing 100 to move radially.

[0041] In this embodiment, lever 43 is mounted on bracket 44, which is fixed to the outer side of the second support plate 1102. The fulcrum of lever 43 is located inside bracket 44 and is close to measuring member 3, increasing the lever arm of thrust member 41 and making it easier for the operator to operate the thrust part. Preferably, lever 43 can be hinged to the inside of bracket 44, and the hinge point is the fulcrum of lever 43, allowing lever 43 to rotate in the horizontal plane around the hinge point. Furthermore, the lever fulcrum can change the direction of force. When the operator pulls the pushing component 41, the end of the lever 43 connected to the pushing component 41 moves closer to the pushing component 41, while the other end of the lever 43 (i.e., the end of the lever 43 connected to the pulling component 42) pushes the measuring component 3 away from the pulling component 42 (as shown in the figure, moving to the left). When the operator pulls the pulling component 42, the end of the lever 43 connected to the pulling component 42 pulls the measuring component 3 closer to the pulling component 42 (as shown in the figure, moving to the right), thereby realizing the push-pull operation of the measuring component 3, the push-pull spindle 2, and the inner ball 1001. In this embodiment, both the pushing component 41 and the pulling component 42 are spring scales, which can apply different values ​​of force to different types of spherical bearings 100.

[0042] Specifically, the radial clearance detection device for the spherical bearing provided in this embodiment also includes a limiting component 5 for limiting the movement direction of the push-pull spindle 2. This component can limit the direction of the push-pull spindle 2 to remain unchanged during push-pull movement, so that the push-pull spindle 2 is always perpendicular to the radial direction of the spherical bearing 100. This allows the push-pull spindle 2 to always drive the inner ball 1001 to move in the radial direction, ensuring more accurate radial clearance detection.

[0043] Specifically, the radial clearance detection device for spherical plain bearings provided in this embodiment further includes an adapter 6. The adapter 6 includes a first connecting part 61 and two second connecting parts 62. The two second connecting parts 62 are arranged radially parallel to the spherical plain bearing 100 and are respectively connected to both ends of the push-pull spindle 2. The two ends of the first connecting part 61 are respectively connected to the two second connecting parts 62. The side of the first connecting part 61 away from the push-pull spindle 2 is connected to the measuring element 3. That is, the adapter 6 is generally U-shaped. The measuring element 3 can drive the adapter 6 to move radially. The adapter 6 in turn drives the push-pull spindle 2 and the inner ball 1001 to move radially. By setting the adapter 6, the pulling force and the pushing force can be transmitted, making the force application process more stable and balanced, ensuring that the push-pull spindle 2 and the inner ball only move radially, and ensuring detection accuracy.

[0044] Furthermore, the limiting component 5 includes two limiting plates 501, which are disposed on the clamping component 1. Specifically, the limiting plates 501 are disposed on the horizontal plate of the base 11, and the two limiting plates 501 are respectively disposed close to the outer side of the second connecting part 62. The two limiting plates 501 can limit and guide the second connecting part 62 when it moves, preventing the position of the push-pull spindle 2 from being misaligned and affecting the accuracy of the radial clearance detection value of the spherical bearing. Further, both limiting plates 501 are L-shaped plates, including a vertical portion and a horizontal portion. The vertical portion is close to the outer side of the second connecting part 62, and the horizontal portion is disposed on the horizontal plate. Furthermore, a first waist-shaped hole 502 is provided on the horizontal part of the limiting plate, and a plurality of screw holes are formed at the corresponding position of the horizontal plate along the length direction of the first waist-shaped hole 502. By cooperating the first waist-shaped hole 502 with different screw holes, the distance between the two limiting plates 501 can be adjusted so that the limiting component 5 can adapt to push-pull spindles 2 and adapters 6 of different sizes and specifications.

[0045] Furthermore, the assembly also includes a base plate 7, with the clamp assembly 1 and push-pull assembly 4 all mounted on the base plate 7. A guide plate 701 is provided on the base plate 7. The operating handle 45 of the push-pull assembly 4 is movably mounted on the guide plate 701. The guide plate 701 provides guidance for the push-pull movement of the operating handle 45, further ensuring detection accuracy and preventing detection errors. The guide plate 701 is an L-shaped plate, including a horizontal section and a vertical section. The operating handle 45 passes through the vertical section and is movably mounted on it. The horizontal section of the guide plate is detachably connected to the base plate 7. A second oblong hole 702 is formed on the horizontal section of the guide plate. Multiple screw holes are formed at corresponding positions on the base plate 7 along the length of the second oblong hole 702. By cooperating with different screw holes, the distance between the guide plate 701 and the push-pull assembly 4 can be adjusted, making operation more flexible and adaptable.

[0046] The following description, with reference to the accompanying drawings, describes the process of detecting the radial clearance of a spherical plain bearing using the spherical plain bearing radial clearance detection device of this embodiment:

[0047] During measurement, the spherical plain bearing 100 is first screwed into the connecting hole, and the positioning piece 12 is screwed from the other end of the connecting hole to the spherical plain bearing 100. The push-pull spindle 2 is inserted into the inner ball 1001. Then, the two ends of the push-pull spindle 2 are connected to the second connecting part 62 of the adapter 6. After adjusting the distance between the two limiting plates 501, they are locked in the first waist-shaped hole 502 with bolts. Then, the operator pulls the thrust component 41, so that the inner ball 1001 moves to the first end in the radial direction of the outer ball. The first value at this time is read from the measuring piece 3. Then, the pulling component 42 is pulled, so that the inner ball 1001 moves to the second end in the radial direction of the outer ball. The second value at this time is read from the measuring piece 3. Combining the first value and the second value, the radial clearance value of the spherical plain bearing 100 can be obtained.

[0048] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A device for detecting radial clearance of a spherical plain bearing, characterized in that, include: Clamp assembly (1) for securing spherical bearing (100); The push-pull spindle (2) is adapted to pass through the inner ball (1001) of the spherical bearing (100); Measuring element (3) is arranged radially along the spherical bearing (100); The push-pull assembly (4) is connected to one end of the measuring element (3) away from the push-pull spindle (2) and can push and pull the measuring element (3) radially along the spherical bearing (100). The adapter (6) includes a first connecting part (61) and two second connecting parts (62). The two second connecting parts (62) are arranged radially parallel to the spherical bearing (100) and connected to both ends of the push-pull spindle (2). The two ends of the first connecting part (61) are connected to the two second connecting parts (62). The side of the first connecting part (61) away from the push-pull spindle (2) is connected to the measuring part (3). The adapter (6) is generally U-shaped. The two second connecting parts (62) are located on both sides of the axial direction of the spherical bearing (100). A limiting component (5) for limiting the movement direction of the push-pull spindle (2) includes two limiting plates, which are respectively disposed close to the outer side of the second connecting part (62).

2. The radial clearance detection device for spherical plain bearings according to claim 1, characterized in that, The push-pull assembly (4) includes a push component (41), a pull component (42) and a lever (43). The pull component (42) is connected to the lever (43). The lever (43) can rotate in the horizontal plane. One end of the lever (43) is connected to the measuring element (3) and the other end is connected to the push component (41).

3. The radial clearance detection device for spherical plain bearings according to claim 2, characterized in that, The fulcrum of the lever (43) is positioned close to the measuring element (3).

4. The radial clearance detection device for spherical plain bearings according to claim 1, characterized in that, The clamp assembly (1) includes a base (11) and a positioning member (12). The base (11) has a connecting hole formed thereon. The spherical bearing (100) is detachably connected to the connecting hole. The positioning member (12) can enter the connecting hole from the side away from the spherical bearing (100) and abut against the spherical bearing (100).

5. The radial clearance detection device for spherical plain bearings according to claim 4, characterized in that, The base (11) includes a horizontal plate and a first vertical plate and a second vertical plate vertically arranged on the horizontal plate. The first vertical plate and the second vertical plate are arranged parallel to each other and perpendicular to the radial direction of the spherical bearing (100). The spherical bearing (100) is arranged on the first vertical plate, and the measuring element (3) is movably arranged on the second vertical plate.

6. The radial clearance detection device for spherical plain bearings according to claim 1, characterized in that, The measuring instrument (3) is a digital micrometer.

7. The radial clearance detection device for spherical plain bearings according to any one of claims 1-6, characterized in that, It also includes a base plate (7), on which the clamp assembly (1) and the push-pull assembly (4) are both mounted.

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