Device for measuring displacement of bearing setting position in an assembly

Abstract

The application discloses a measuring device for bearing displacement under load in an assembly, which comprises a base, a supporting block and a load applying part. The load applying part is connected to the base for applying load to the bearing. The load applying part comprises a handle, a pressure sensor, a positioning shaft and a pressing block assembly. A first mounting hole is formed in the upper surface of the base. The supporting block is arranged on the base along the outer circumferential direction of the first mounting hole and is sleeved on the outer circumferential wall of the positioning shaft. The inner ring of the bearing is sleeved on the upper portion of the positioning shaft. The outer ring of the bearing is located between the pressing block assembly and the supporting block. The positioning shaft is arranged in the first mounting hole and the inner hole of the pressure sensor. The pressing block assembly and the handle are respectively arranged at the upper and lower ends of the positioning shaft. The pressure sensor is fixed below the upper surface of the base and between the handle. The handle and the positioning shaft are screw-connected. The device can measure the displacement of the bearing relative to the main body of the part under the premise that the bearing bears load.

Description

Technical Field

[0001] This invention relates to the field of measuring the displacement of spherical plain bearings under specified load conditions, and more particularly to a device for measuring the constant load displacement of bearings in an assembly. Background Technology

[0002] According to the assembly requirements of the tail rotor pitch control component of a certain type of tail reducer, its connecting rod and ball bearing are installed as a single unit through a flanging and riveting process. After assembly, the bearing must meet the requirement of no axial displacement under a load of 490N. Axial displacement refers to whether there is displacement of the ball bearing relative to the connecting rod, not whether there is displacement of the inner or outer ring of the ball bearing or the ball bearing itself. The axial displacement of the ball bearing relative to the connecting rod needs to be measured while the load is applied to determine whether the installation of the ball bearing meets the assembly requirements. Currently, there are devices or apparatuses for detecting the axial displacement of the ball bearing itself, but there is no equipment for detecting the axial displacement of the bearing relative to the connecting rod under pressure within the assembly. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a measuring device for the constant load displacement of a bearing in a component. This device can measure the displacement of the bearing in the component relative to the main body of the part under the premise that the bearing is under load. To solve the above technical problems, the present invention adopts the following technical solution: a measuring device for the constant load displacement of a bearing in an assembly, the bearing assembly including a bearing and a main body of the component, the bearing being mounted on the main body of the component, the constant load displacement measuring device including a base and a loading component, the loading component being mounted on the base for applying a load to the bearing, the loading component including an operating component, a pressure sensor, a positioning shaft and a pressure block assembly, the constant load displacement measuring device also including a support block, the upper surface of the base having a first mounting hole, the support block being arranged on the base along the outer circumferential direction of the first mounting hole and sleeved on the outer circumferential wall of the positioning shaft, the inner ring of the bearing being sleeved on the upper part of the positioning shaft, the outer ring of the bearing being located between the pressure block assembly and the support block, the positioning shaft passing through the first mounting hole and the inner hole of the pressure sensor, the pressure block assembly and the operating component being respectively connected to the upper and lower ends of the positioning shaft, the pressure sensor being fixed below the upper surface of the base and between the operating component, the operating component and the positioning shaft being threadedly connected.

[0004] As a further improvement to the above technical solution:

[0005] The constant load displacement measuring device also includes a support component, which is mounted on a base to support the main body of the part so that the bearing assembly remains horizontal.

[0006] The supporting component includes a slider, an elastic element, a positioning sleeve, and a locking element. The slider includes a slider body and a connecting shaft connected to the lower part of the slider body. The slider body and the locking element are located above and below the upper surface of the base, respectively. The upper end of the elastic element is located at the lower end of the slider body and is arranged parallel to the axial direction. The positioning sleeve is sleeved on the outer periphery of the connecting shaft and the elastic element. The locking element and the connecting shaft are threaded together. Rotating the locking element adjusts the distance between the locking element and the slider body. Under the combined action of the elastic element, the slider body moves up and down.

[0007] The positioning sleeve includes a positioning spindle and a mounting plate located on the outer circumference of the positioning spindle. A second mounting hole is provided on the upper surface of the base. The positioning spindle is inserted into the second mounting hole. The mounting plate is used to fix the positioning sleeve to the base.

[0008] The mounting plate is fixedly connected to the base by bolts or screws.

[0009] The positioning sleeve has a central through hole in the middle, which includes an upper through hole and a lower through hole. The diameter of the lower through hole is smaller than the diameter of the upper through hole. The elastic element is located in the upper through hole, and the connecting shaft extends from the lower through hole to the upper through hole.

[0010] The loading component also includes a limiting member. The outer wall of the positioning shaft is provided with a limiting groove in a direction parallel to the central axis. The limiting member is inserted into the limiting groove from the base to prevent the positioning shaft from rotating.

[0011] The pressure sensor is a spoke-type sensor, with countersunk holes distributed along the outer circumference of the inner hole of the spoke-type sensor. The sensor is connected to the base by screws passing through the countersunk holes.

[0012] The lower end of the positioning shaft passes through the inner hole and is threaded into the operating component, connecting the loading component and the sensor as one unit.

[0013] The upper part of the positioning shaft is provided with an external thread, and the inside of the pressure block assembly is provided with an internal thread, and the external thread and the internal thread are engaged.

[0014] The pressing block assembly includes a lower pressing block and an upper pressing block, and the positioning shaft passes through the lower pressing block and is connected to the upper pressing block.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] In this invention, the loading component mainly performs the work of applying and fixing the load on the bearing. During operation, the rotating control component changes the squeezing force of the control component on the sensor. By screwing the control component into the thread at the lower part of the positioning shaft, the entire loading component is driven to move downward. The specific value of the generated load can be seen through the digital display of the pressure sensor. When the specified load is reached, the rotation of the control component can be stopped, and the displacement can be read by observing the reading of the dial indicator above the pressure block assembly. The load is adjustable and can be stably maintained.

[0017] The support assembly of the present invention changes the mating distance between the connecting shaft and the locking member by rotating the locking member. At this time, the compressive force borne by the elastic member changes, and the amount of compression is also adjusted accordingly, thereby achieving the purpose of changing the height of the slider and making the slider at the ideal height. The support component provides accurate position and adjustable height for the bearing parts, adapting to the main body of parts of different sizes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the device of the present invention.

[0019] Figure 2 This is a top view of the device of the present invention.

[0020] Figure 3 yes Figure 1 A magnified front view of section A in the middle.

[0021] Figure 4 This is a schematic diagram of the structure of the bearing assembly in Embodiment 1 of the present invention.

[0022] Figure 5 This is a top view of the base of the present invention.

[0023] Figure 6 yes Figure 5 Sectional view along the BB line.

[0024] Figure 7 This is a schematic diagram of the slider of the present invention.

[0025] Figure 8 This is a top view of the positioning sleeve of the present invention.

[0026] Figure 9 yes Figure 8 Sectional view along the CC line.

[0027] Figure 10 This is a schematic diagram of the support block structure.

[0028] Figure 11 This is a structural schematic diagram of the positioning shaft.

[0029] Figure 12 This is a bottom view of the upper pressure block.

[0030] Figure 13 This is a cross-sectional view of the upper pressure block.

[0031] The labels in the diagram represent: 1. Base; 11. First mounting hole; 12. Second mounting hole; 2. Loading component; 21. Operating component; 22. Pressure sensor; 23. Limiting component; 24. Positioning shaft; 241. Limiting groove; 25. Pressure block assembly; 251. Lower pressure block; 252. Upper pressure block; 3. Support block; 4. Supporting component; 41. Slider; 411. Slider body; 412. Connecting shaft; 42. Elastic component; 43. Positioning sleeve; 431. Positioning spindle; 4311. Center through hole; 43111. Upper through hole; 43112. Lower through hole; 432. Mounting plate; 44. Locking component; 5. Assembly with bearing; 51. Bearing; 52. Part body; 6. Center; 7. Bracket. Detailed Implementation

[0032] The present invention will be further described in detail below. Unless otherwise specified, the instruments or materials used in the present invention are commercially available.

[0033] Example 1:

[0034] like Figures 1 to 13 As shown, the bearing constant load displacement measuring device in this embodiment includes a bearing assembly 5 comprising a bearing 51 and a main body 52. ​​The bearing 51 is connected to the main body 52. ​​The constant load displacement measuring device includes a base 1 and a loading component 2. The loading component 2 is mounted on the base 1 to apply a load to the bearing 51. The loading component 2 includes an operating component 21, a pressure sensor 22, a positioning shaft 24, and a pressure block assembly 25. The constant load displacement measuring device also includes a support block 3 and a dial indicator. A first mounting hole 11 is provided on the upper surface of the base 1. The support block 3 is arranged on the base 1 along the outer circumference of the first mounting hole 11 and is sleeved on the outer circumferential wall of the positioning shaft 24. The inner ring of the bearing 51 is sleeved on the upper part of the positioning shaft 24. The outer ring of bearing 51 is located between the pressure block assembly 25 and the support block 3, ensuring that the applied load acts on the outer ring of bearing 51. The positioning shaft 24 passes through the first mounting hole 11. The pressure block assembly 25 and the operating member 21 are located at the upper and lower ends of the positioning shaft 24, respectively. The pressure sensor 22 is fixed below the upper surface of the base 1. The lower part of the positioning shaft 24 passes through the inner hole of the pressure sensor 22 and is connected to the operating member 21. The tip 6 of the dial indicator is located on the upper surface of the pressure block assembly 25 and the central axis of the tip is parallel to the central axis of the positioning shaft 24. When bearing 51 is displaced, the display of the dial indicator will show data. While applying the load, the axial displacement of bearing 51 can be measured to determine whether the installation of bearing 51 meets the assembly requirements.

[0035] The loading component 2 mainly performs the work of applying and fixing the load on the bearing 51. During operation, the operating component 21 is rotated so that it moves upward along the external thread provided at the lower part of the positioning shaft 24. When the end face of the operating component 21 contacts the lower end face of the pressure sensor 22, it generates a squeezing force on the pressure sensor 22. Through the thread engagement, the entire loading component 2 moves downward. The specific value of the generated pressure can be seen through the digital display of the pressure sensor 22. When the specified load value is reached, the rotation of the operating component 21 can be stopped. The displacement can be read by observing the reading of the dial indicator above the pressure block assembly 25. The load size can meet the requirements and is adjustable and displayable.

[0036] In this embodiment, the loading component 2 further includes a limiting member 23. A limiting groove 241 is provided on the outer wall of the positioning shaft 24 along a direction parallel to the central axis. The limiting member 23 is inserted into the limiting groove 241 from the base 1 to prevent the positioning shaft 24 from rotating. The limiting member 23 is a screw pin, which restricts the possible rotation of the positioning shaft 24 during the downward movement of the loading component 2.

[0037] The structural schematic diagram of the main body 52 with bearing assembly 5 and the bearing 51 is shown below. Figure 4 As shown, Figure 4 (a) is the front view of the main body of part 52. Figure 4 (b) is a front view of bearing 51. In this embodiment, bearing 51 is a spherical bearing and part body 52 is a connecting rod assembly. One end of the connecting rod assembly is provided with a mounting hole for mounting the spherical bearing. After the spherical bearing is placed in the mounting hole, the two are combined into one piece by a flanging and riveting process.

[0038] The positioning shaft 24 has an external thread on its upper part, and the pressure block assembly 25 has an internal thread inside, with the external thread and the internal thread engaging.

[0039] The pressure block assembly 25 is integrated with the positioning shaft 24. In this embodiment, the pressure block assembly 25 includes a lower pressure block 251 and an upper pressure block 252, with the positioning shaft 24 passing through the lower pressure block 251 and connecting to the upper pressure block 252. The upper pressure block 252 differs from ordinary nuts in that it has a flat-top structure. In this embodiment, the upper surface of the upper pressure block 252 is supported by the center 6 of a dial indicator, serving as the measuring surface of the dial indicator. During operation, the bearing 51 can be determined by observing the dial indicator reading. In this embodiment, the lower pressure block 251, the bearing 51, and the positioning shaft 24 are connected as a whole by threads on the positioning shaft 24.

[0040] like Figure 10As shown, the support block 3 includes a support body and a support plate arranged on the outer circumference of the support body. The lower part of the support body is located in the first mounting hole 11, and the bottom of the support plate is located on the upper surface of the base 1. The support block 3 has a central inner hole along the central axis and a transverse inner hole along the direction perpendicular to the central axis. The transverse inner hole facilitates the passage of the limiting member 23 to cooperate with the limiting groove of the positioning shaft 24.

[0041] In this embodiment, the outer peripheral wall of the middle part of the positioning shaft 24 slides into the inner hole of the support block 3 without gap, so that the loading component 2 can only move in the vertical direction, so as to ensure that the loading force on the bearing 51 is applied vertically to the bearing 51.

[0042] In this embodiment, the pressure sensor 22 is a spoke-type sensor, with the data interface located on its lower surface. Countersunk holes are distributed around the outer circumference of the inner bore in the center of the spoke-type sensor. Screws pass through these countersunk holes and connect to the base 1. The positioning shaft 24 passes through the inner bore in the center and is threaded onto the operating member 21, thus connecting the loading member 2 and the pressure sensor 22 as a single unit.

[0043] The upper and lower surfaces of base 1 have high precision requirements, and a position for adsorbing the magnetic watch holder is reserved on the upper surface. Figure 1 The location of the middle support 7 can be directly used as the measurement reference for the dial indicator.

[0044] The constant load displacement measuring device also includes a support component 4, which is mounted on the base 1 to support the main body 52 of the part so that the bearing assembly 5 is kept horizontal.

[0045] like Figure 1 , 2 As shown in Figures 3 and 7, the support component 4 includes a slider 41, an elastic element 42, a positioning sleeve 43, and a locking element 44. The slider 41 and the locking element 44 are located above and below the upper surface of the base 1, respectively. The slider 41 includes a slider body 411 and a connecting shaft 412 connected to the lower part of the slider body 411. The upper end of the elastic element 42 is located at the lower end of the slider body 411 and is arranged parallel to the axial direction. The positioning sleeve 43 is sleeved on the outer periphery of the slider 41 and the elastic element 42. The locking element 44 and the connecting shaft 412 are threadedly connected. Rotating the locking element 44 adjusts the distance between the locking element 44 and the slider body 411. Under the combined action of the elastic element 42, the slider body 411 moves up and down. The main body 52 of the component is arranged laterally on the slider body 411.

[0046] The support component 4 ensures that the main body 52 of the part is placed stably. When the support component 4 is working, the distance between the slider body 411 and the locking component 44 is changed by rotating the locking component 44. At this time, the compressive force borne by the elastic component 42 changes, and the amount of compression is also adjusted accordingly, thereby achieving the purpose of changing the height of the slider body 411 and placing the slider body 411 at the ideal height, thereby achieving the purpose of adjusting the height of the main body 52 of the part.

[0047] like Figure 7 As shown, Figure 7 (a) is a half-sectional view of slider 41. Figure 7 (b) is Figure 1 A schematic diagram of the cooperation between slider 41 and part body in the middle A direction. In this embodiment, slider body 411 is provided with V-shaped groove, connecting shaft 412 is provided with external thread at the lower part, part body 52 is located in the groove of slider 41, elastic element 42 is spring, and locking element 44 is nut that cooperates with the external thread at the lower part of connecting shaft 412.

[0048] like Figure 8 and 9 As shown, the positioning sleeve 43 includes a positioning spindle 431 and a mounting plate 432 located on the outer circumference of the positioning spindle 431. A second mounting hole 12 is provided on the upper surface of the base 1. The positioning spindle 431 is inserted into the second mounting hole 12. The mounting plate 432 is used to fix the positioning sleeve 43 to the base 1.

[0049] Mounting plate 432 is fixedly connected to base 1 by screws.

[0050] like Figure 8 and 9 As shown, the positioning sleeve 43 has a central through hole 4311 in the middle. The central through hole 4311 includes an upper through hole 43111 and a lower through hole 43112. The diameter of the lower through hole 43112 is smaller than the diameter of the upper through hole 43111. The elastic element 42 is located in the upper through hole 43111. The connecting shaft 412 extends from the lower through hole 43112 to the upper through hole 43111.

[0051] In this embodiment, the positioning sleeve 43 has a groove horizontally opened on the upper part of the upper through hole 43111. The cross-sectional shape of the groove matches the shape of the slider 41, so that the slider 41 can move up and down in the vertical direction, avoiding possible rotation of the slider 41.

[0052] The support component 4 and the support block 3 together provide positional protection for the bearing assembly 5.

[0053] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A measuring device for the constant load displacement of a bearing in an assembly, comprising a bearing assembly (5) including a bearing (51) and a component body (52), the bearing (51) being mounted on the component body (52), the constant load displacement measuring device including a base (1) and a loading component (2), the loading component (2) being connected to the base (1) for applying a load to the bearing (51), characterized in that: The loading component (2) includes an operating element (21), a pressure sensor (22), a positioning shaft (24), and a pressure block assembly (25). The fixed load displacement measuring device also includes a support block (3). The upper surface of the base (1) is provided with a first mounting hole (11). The support block (3) is arranged on the base (1) along the outer circumferential direction of the first mounting hole (11) and sleeved on the outer circumferential wall of the positioning shaft (24). The inner ring of the bearing (51) is sleeved on the upper part of the positioning shaft (24). The outer ring of the bearing (51) is located between the pressure block assembly (25) and the support block (3). The positioning shaft (24) passes through the first mounting hole (11) and the inner hole of the pressure sensor (22). The pressure block assembly (25) and the operating element (21) are respectively connected to the upper and lower ends of the positioning shaft (24). The pressure sensor (22) is fixed below the upper surface of the base (1) and between the operating element (21). The operating element (21) and the positioning shaft (24) are threadedly connected. The constant load displacement measuring device also includes a support component (4), which is mounted on the base (1) to support the main body of the part (52) so that the bearing assembly (5) is kept horizontal; The support component (4) includes a slider (41), an elastic element (42), a positioning sleeve (43), and a locking element (44). The slider (41) includes a slider body (411) and a connecting shaft (412) connected to the lower part of the slider body (411). The slider body (411) and the locking element (44) are located above and below the upper surface of the base (1), respectively. The upper end of the elastic element (42) is located at the lower end of the slider body (411) and is set parallel to the axial direction of the connecting shaft (412). The positioning sleeve (43) is sleeved on the outer periphery of the connecting shaft (412) and the elastic element (42). The locking element (44) is threadedly connected to the connecting shaft (412). Rotating the locking element (44) adjusts the distance between the locking element (44) and the slider body (411). Under the combined action of the elastic element (42), the slider body (411) moves up and down.

2. The measuring device according to claim 1, characterized in that: The positioning sleeve (43) includes a positioning spindle (431) and a mounting plate (432) located on the outer circumference of the positioning spindle (431). A second mounting hole (12) is provided on the upper surface of the base (1). The positioning spindle (431) is inserted into the second mounting hole (12). The mounting plate (432) is used to fix the positioning sleeve (43) to the base (1).

3. The measuring device according to claim 2, characterized in that: The mounting plate (432) is fixedly connected to the base (1) by bolts or screws.

4. The measuring device according to claim 1, characterized in that: The positioning sleeve (43) has a central through hole (4311) in the middle. The central through hole (4311) includes an upper through hole (43111) and a lower through hole (43112). The diameter of the lower through hole (43112) is smaller than the diameter of the upper through hole (43111). The elastic element (42) is located in the upper through hole (43111). The connecting shaft (412) extends from the lower through hole (43112) to the upper through hole (43111).

5. The measuring device according to any one of claims 1 to 4, characterized in that: The loading component (2) also includes a limiting component (23). The outer wall of the positioning shaft (24) is provided with a limiting groove (241) in a direction parallel to the central axis. The limiting component (23) is inserted into the limiting groove (241) from the base (1) to prevent the positioning shaft (24) from rotating.

6. The measuring device according to any one of claims 1 to 4, characterized in that: The pressure sensor (22) is a spoke-type sensor, with countersunk holes distributed along the outer circumference of the inner hole of the spoke-type sensor. The screw passes through the countersunk holes and connects to the base (1). The lower end of the positioning shaft (24) passes through the inner hole and is threaded into the operating component (21), connecting the loading component and the sensor as one unit.

7. The measuring device according to any one of claims 1 to 4, characterized in that: The positioning shaft (24) has an external thread on its upper part, and the pressure block assembly (25) has an internal thread inside, with the external thread and the internal thread engaging with each other.

8. The measuring device according to any one of claims 1 to 4, characterized in that: The pressing block assembly (25) includes a lower pressing block (251) and an upper pressing block (252), and the positioning shaft (24) passes through the lower pressing block (251) and is connected to the upper pressing block (252).

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