Sealing Component Radial Force Detection Device and Detection Method

Abstract

The present disclosure relates to a sealing member radial force detection device and a detection method. Among them, the sealing member radial force detection device includes a detection mechanism, and the detection mechanism includes: a base; a first outer ring detection member and a second outer ring detection member, both of which are semi-cylindrical structures and have the same first inner diameter and first outer diameter. The first outer ring detection member and the second outer ring detection member are spaced apart along a first direction and form a gap; a first inner ring detection member and a second inner ring detection member, both of which are semi-cylindrical structures and have the same first diameter, and the first diameter is smaller than the first inner diameter. The first inner ring detection member and the second inner ring detection member are spaced apart along the first direction and form a gap. An annular groove is formed between the first inner ring detection member and the second inner ring detection member and between the first outer ring detection member and the second outer ring detection member for accommodating the sealing member; a first sensor configured to detect the outer ring radial force of the sealing member; and a second sensor configured to detect the inner ring radial force of the sealing member.

Description

Technical Field

[0001] The present disclosure relates to the technical field of detecting the radial force of a seal, and particularly to a device and a method for detecting the radial force of a seal. Background Art

[0002] Seals are widely used in construction machinery main engines (such as the power head of a rotary drilling rig, the vibrating wheel of a road roller, etc.) and core components (such as drive axles, gearboxes, input / output shafts of hydraulic pump motors), and are used to seal media such as hydraulic oil and lubricating oil. During operation, if the radial force between the seal and the shaft contact surface is too large, the seal is prone to wear and thermal aging, resulting in oil leakage of the seal. If the radial force is too small, the contact between the seal and the shaft is not tight, leading to oil leakage. When the oil leakage is severe, it will cause insufficient lubrication of the main engine and core components, resulting in failures such as abnormal noises and wear of parts such as gears and bearings, affecting the reliability of the whole machine and core components. The radial force test of the seal is of great significance for the connection design of the seal and the improvement of connection reliability. Summary of the Invention

[0003] Embodiments of the present disclosure provide a device and a method for detecting the radial force of a seal, which can detect the inner and outer ring radial forces of the seal simultaneously.

[0004] According to one aspect of the present disclosure, a device for detecting the radial force of a seal is proposed, including a detection mechanism, and the detection mechanism includes:

[0005] A base;

[0006] A first outer ring detection member and a second outer ring detection member, both of which are semi-cylindrical structures and have the same first inner diameter and first outer diameter. The first outer ring detection member and the second outer ring detection member are spaced apart along a first direction and form a gap;

[0007] A first inner ring detection member and a second inner ring detection member, both of which are semi-cylindrical structures and have the same first diameter, and the first diameter is smaller than the first inner diameter. The first inner ring detection member and the second inner ring detection member are spaced apart along the first direction and form a gap. An annular groove is formed between the first inner ring detection member and the second inner ring detection member and between the first outer ring detection member and the second outer ring detection member for accommodating the seal;

[0008] A first sensor, connected between the first outer ring detection member and the base, and configured to detect the outer ring radial force of the seal; and

[0009] A second sensor, connected between the first inner ring detection member and the base, and configured to detect the inner ring radial force of the seal.

[0010] In some embodiments, when the seal is installed in the annular groove, the outer wall of the annular groove is configured to be in interference fit with the outer ring of the seal, and the inner wall of the annular groove is configured to be in interference fit with the inner ring of the seal.

[0011] In some embodiments, the detection mechanism further includes:

[0012] A first inner ring mounting member and a second inner ring mounting member, both of which are semi-cylindrical structures and have the same second diameter, the second diameter being greater than the first diameter and the first inner diameter, and the second diameter being less than the first outer diameter. The first inner ring mounting member is connected between the first inner ring detection member and the base, and the second inner ring mounting member is connected between the second inner ring detection member and the base. The first inner ring mounting member and the second inner ring mounting member are spaced apart along the first direction and form a gap.

[0013] In some embodiments, the base includes a first base and a second base, the first sensor is connected to the first base, and the second sensor is connected to the second base.

[0014] In some embodiments, both the first sensor and the second sensor are rectangular parallelepiped structures and both extend along a second direction, the second direction being perpendicular to the first direction. The detection mechanism further includes:

[0015] A first connecting member, connected between the first outer ring detection member and the first end of the first sensor, the second end of the first sensor being connected to the first base; and

[0016] A second connecting member, connected between the first inner ring detection member and the first end of the second sensor, the second end of the second sensor being connected to the second base.

[0017] In some embodiments, a first square hole is provided on the first connecting member, the first base is a flat plate structure and the first base has a first groove, the first end of the first sensor is connected to the first square hole, and the second end of the first sensor is connected to the first groove; and / or

[0018] A second square hole is provided on the second connecting member. The second base includes a first plate, a second plate and a third plate. The first plate and the second plate are arranged opposite to each other along the second direction, the third plate is connected between the first plate and the second plate, a second groove is provided on the second plate, the first end of the second sensor is connected to the second square hole, and the second end of the second sensor is connected to the second groove.

[0019] In some embodiments, the seal radial force detection device further includes:

[0020] A first driving mechanism, including a power output rod, the power output rod being connected to the slot hole of the second outer ring detection member, and the first driving mechanism being configured to drive the second outer ring detection member to move along the first direction.

[0021] In some embodiments, the seal radial force detection device further includes:

[0022] A pressing tooling, configured to press the seal into the annular groove along a third direction, the bottom surface of the pressing tooling being perpendicular to the third direction, and the third direction being perpendicular to the first direction.

[0023] In some embodiments, the seal radial force detection device further includes:

[0024] A base on which a base platform is mounted;

[0025] A guide post provided on the base and extending in a third direction; and

[0026] A movable plate movably provided on the guide post along the guide post and perpendicular to the third direction, and the movable plate is fixedly connected to the pressing tooling.

[0027] In some embodiments, the seal radial force detection device further includes:

[0028] A housing provided on the base and at least partially covering the outside of the detection mechanism.

[0029] In some embodiments, the seal radial force detection device further includes:

[0030] A fixing plate fixed to one end of the guide post away from the base; and

[0031] A second driving mechanism provided on the fixing plate and configured to drive the movable plate and the pressing tooling to move in the third direction.

[0032] In some embodiments, there are a plurality of guide posts, and the projections of the plurality of guide posts in a plane perpendicular to the third direction are located outside the projection of the detection mechanism in a plane perpendicular to the third direction.

[0033] According to another aspect of the present disclosure, there is provided a seal radial force detection method for a seal radial force detection device based on the above embodiments, including:

[0034] Mount the seal in the annular groove of the detection mechanism along the third direction, and the third direction is perpendicular to the first direction;

[0035] Obtain the outer ring radial force F and the inner ring radial force P of the seal through the first sensor and the second sensor respectively.

[0036] In some embodiments, obtaining the outer ring radial force F and the inner ring radial force P of the seal includes:

[0037] Mount the seal in the annular groove at different N circumferential angles;

[0038] For the i-th circumferential angle, obtain the outer ring radial force fi of the seal through the first sensor and obtain the inner ring radial force pi of the seal through the second sensor; where i = 1, 2... N until all N circumferential angles are detected;

[0039] Calculate the outer ring radial force F = (f1 + f2 + fi + … + fn) / N, and calculate the inner ring radial force P = (p1 + p2 + pi + … + pn) / N.

[0040] In some embodiments, mounting the seal at different N circumferential angles in the annular groove further includes:

[0041] Place the seal above the annular groove and make a mark at the intersection of the seal and the gap;

[0042] According to the mark, rotate the seal clockwise or counterclockwise in sequence to 360*i / N relative to the initial angle, where i = 0, 1, 2…N - 1;

[0043] Make the second driving mechanism drive the pressing tooling to move in the third direction towards the base to mount the seal in the annular groove.

[0044] In some embodiments, mounting the seal at different N circumferential angles in the annular groove further includes:

[0045] Make the first driving mechanism drive the second outer ring detection member to move in the first direction away from the first outer ring detection member, so as to take out and rotate the seal upward from the annular groove in the third direction; and / or

[0046] Make the first driving mechanism drive the second outer ring detection member to move in the first direction towards the first outer ring detection member, so that the second outer ring detection member returns to the initial position.

[0047] Based on the above technical solutions, the seal radial force detection device of the embodiments of the present disclosure has a simple structure, is convenient for processing and manufacturing, can detect the inner and outer ring radial forces of the seal simultaneously, has a fast response speed, high detection accuracy, and stable and reliable detection results; the operation steps are simple, suitable for batch detection; has a wide application range, is convenient to adjust, and the detection actions are flexible. Description of the Drawings

[0048] The drawings described herein are used to provide a further understanding of the present disclosure, form a part of this application, and the schematic embodiments and descriptions of the present disclosure are used to explain the present disclosure, and do not constitute an improper limitation to the present disclosure. In the drawings:

[0049] Figure 1 It is a schematic structural diagram of some embodiments of the detection mechanism of the seal radial force detection device of the present disclosure.

[0050] Figure 2 It is a schematic structural diagram of some embodiments of the cooperation between the detection mechanism and the seal of the seal radial force detection device of the present disclosure.

[0051] Figure 3Schematic structural diagram of some embodiments of the radial force detection device for the seal of the present disclosure.

[0052] Figure 4 Schematic structural diagram of the first base of the radial force detection device for the seal of the present disclosure.

[0053] Figure 5 Schematic structural diagram of the second base of the radial force detection device for the seal of the present disclosure.

[0054] Description of reference numerals

[0055] 1. Detection mechanism; 11. First outer ring detection member; 12. Second outer ring detection member; 13. Slot; 21. First inner ring detection member; 22. Second inner ring detection member; 31. First sensor; 32. Second sensor; 41. First inner ring mounting member; 42. Second inner ring mounting member; 51. First connecting member; 52. Second connecting member; 10. Base; 110. First base; 111. First groove; 120. Second base; 121. First plate; 122. Second plate; 123. Third plate; 124. Second groove;

[0056] 2. First driving mechanism; 23. Power output rod; 24. Fixed mounting member; 3. Pressing tooling; 4. Base; 5. Guide post; 53. Fastening member; 6. Movable plate; 7. Housing; 8. Fixed plate; 9. Second driving mechanism; 101. Seal; 102. Controller; x. First direction; y. Second direction; z. Third direction. Detailed implementation manners

[0057] The following details the present disclosure. In the following paragraphs, different aspects of the embodiments are more specifically defined. Each of the aspects so defined can be combined with any other one or more aspects, unless clearly stated that they cannot be combined. In particular, any feature considered to be preferred or advantageous can be combined with one or more other features considered to be preferred or advantageous.

[0058] The terms "first", "second", etc. used in the present disclosure are only for convenience of description to distinguish different components with the same name, and do not represent a sequence or primary-secondary relationship.

[0059] In the description of the present disclosure, it should be understood that the orientation or positional relationships indicated by the terms "inner", "outer", "upper", "lower", "left" and "right" are defined based on the seal or the detection mechanism, etc. as a reference, and are only for facilitating the description of the present disclosure, rather than indicating or implying that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the protection scope of the present disclosure.

[0060] First, the present disclosure provides a device for detecting the radial force of a seal, which is abbreviated as the "detection device" in some subsequent embodiments. In some illustrative embodiments, such as Figures 1 to 5 shown, the detection device includes a detection mechanism 1, and the detection mechanism 1 includes:

[0061] A base 10;

[0062] A first outer ring detection member 11 and a second outer ring detection member 12, both of which are semi-cylindrical structures and have the same first inner diameter and first outer diameter. The first outer ring detection member 11 and the second outer ring detection member 12 are spaced apart along the first direction x and form a gap;

[0063] A first inner ring detection member 21 and a second inner ring detection member 22, both of which are semi-cylindrical structures and have the same first diameter, and the first diameter is smaller than the first inner diameter. The first inner ring detection member 21 and the second inner ring detection member 22 are spaced apart along the first direction x and form a gap. An annular groove is formed between the first inner ring detection member 21 and the second inner ring detection member 22 and between the first outer ring detection member 11 and the second outer ring detection member 12 for accommodating the seal 101;

[0064] A first sensor 31, connected between the first outer ring detection member 11 and the base 10, and configured to detect the outer ring radial force of the seal 101; and

[0065] A second sensor 32, connected between the first inner ring detection member 21 and the base 10, and configured to detect the inner ring radial force of the seal 101.

[0066] Specifically, the two semi-cylindrical structures of the first outer ring detection member 11 and the second outer ring detection member 12 are aligned in height and located in the same plane, and the two semi-cylindrical structures of the first inner ring detection member 21 and the second inner ring detection member 22 are aligned in height and located in the same plane, for example, in the same horizontal plane. Specifically, the seal 101 has a structure with both an inner ring and an outer ring, such as a skeleton oil seal, etc.

[0067] Specifically, the first outer ring detection member 11 and the second outer ring detection member 12 are oppositely arranged, and the first inner ring detection member 21 and the second inner ring detection member 22 are oppositely arranged. More specifically, the first outer ring detection member 11 and the second outer ring detection member 12 can be spliced into an annular cylinder structure without a gap, and the first inner ring detection member 21 and the second inner ring detection member 22 can be spliced into a cylinder structure without a gap.

[0068] Specifically, the gap may extend along the second direction y, which is perpendicular to the first direction x. Specifically, providing the gap can ensure the correct detection of the radial force. Without the gap, the radial forces on the entire circumference would cancel out to zero. Optionally, the gaps between the first outer ring detection member 11 and the second outer ring detection member 12 and between the first inner ring detection member 21 and the second inner ring detection member 22 may be equally spaced or unequally spaced.

[0069] Specifically, when the seal 101 is installed in the annular groove, the radial force of the outer ring of the seal 101 can be transmitted to the first sensor 31 through the first outer ring detection member 11, and the radial force of the inner ring of the seal 101 can be transmitted to the second sensor 32 through the first inner ring detection member 21, thereby enabling the simultaneous detection of the radial forces of the inner and outer rings by the seal radial force detection device.

[0070] Specifically, by changing the inner diameter dimension of the annular cylinder structure formed by splicing the first outer ring detection member 11 and the second outer ring detection member 12, i.e., the first inner diameter, and changing the outer diameter dimension of the cylinder structure formed by splicing the first inner ring detection member 21 and the second inner ring detection member 22, i.e., the first diameter, it is possible to measure the radial forces of the inner and outer rings of seals under different model specifications, interference amounts, roughness, hardness, etc.

[0071] The seal radial force detection device of this embodiment has a simple structure, is convenient for processing and manufacturing, can simultaneously detect the radial forces of the inner and outer rings of the seal, has a fast response speed, high detection accuracy, and stable and reliable detection results; the operation steps are simple, suitable for batch detection; it has a wide application range, is convenient to adjust, and the detection action is flexible.

[0072] The seal radial force detection device of this embodiment can conveniently and effectively detect the radial forces of seals under different interference amounts, roughness, hardness, etc., and then extract the key factors affecting the seal radial force to guide the formulation of key parameters for seal connection, improve the connection reliability and stability of the seal, and enhance the service performance of the product.

[0073] In some embodiments, when the seal 101 is installed in the annular groove, the outer wall of the annular groove is configured to be in interference fit with the outer ring of the seal 101, and the inner wall of the annular groove is configured to be in interference fit with the inner ring of the seal 101.

[0074] Specifically, the inner diameter dimension of the annular cylinder structure formed by splicing the first outer ring detection member 11 and the second outer ring detection member 12, i.e., the first inner diameter, is adapted to the outer ring or outer diameter of the seal 101 and is in interference fit; the outer diameter dimension of the cylinder structure formed by splicing the first inner ring detection member 21 and the second inner ring detection member 22 is adapted to the inner ring or inner diameter of the seal 101 and is in interference fit.

[0075] The detection device of this embodiment can ensure the reliable transmission of the radial forces of the inner and outer rings of the seal 101 by making the outer ring and the inner ring of the seal 101 both in interference fit with the side walls of the annular groove, avoiding errors in the detection results due to unexpected situations such as the seal 101 being not properly installed or the detection mechanism 1 shaking during the detection process, and thus improving the detection accuracy.

[0076] In some embodiments, such as Figure 1 and Figure 2 shown, the detection mechanism 1 further includes:

[0077] A first inner ring mounting member 41 and a second inner ring mounting member 42, both of which are semi-cylindrical structures and have the same second diameter, the second diameter being greater than the first diameter and the first inner diameter, and the second diameter being less than the first outer diameter. The first inner ring mounting member 41 is connected between the first inner ring detecting member 21 and the base 10, and the second inner ring mounting member 42 is connected between the second inner ring detecting member 22 and the base 10. The first inner ring mounting member 41 and the second inner ring mounting member 42 are spaced apart along the first direction x and form a gap.

[0078] Specifically, the two semi-cylindrical structures of the first inner ring mounting member 41 and the second inner ring mounting member 42 are aligned in height and located in the same plane, for example, in the same horizontal plane. Specifically, the first inner ring mounting member 41 and the second inner ring mounting member 42 are oppositely arranged. More specifically, the first inner ring mounting member 41 and the second inner ring mounting member 42 can be spliced into a cylindrical structure without a gap.

[0079] Specifically, the first inner ring detecting member 21 is fixedly connected to the first inner ring mounting member 41, and the second inner ring detecting member 22 is fixedly connected to the second inner ring mounting member 42, for example, both can be fixedly connected by bolts. Specifically, setting a gap can ensure the correct detection of the radial force. If there is no gap, the radial forces on the entire circumference will cancel each other out to zero. Optionally, the gap between the first inner ring mounting member 41 and the second inner ring mounting member 42 can be the same as or different from the gap spacing in the foregoing embodiments.

[0080] Specifically, the second diameter is greater than the first diameter and the first inner diameter, so that the first inner ring mounting member 41 and the second inner ring mounting member 42 have larger sizes, which can improve the stability of the detection mechanism and the detection device, ensure the stable transmission of the radial force, and improve the detection accuracy.

[0081] Specifically, the second inner ring mounting member 42 is connected to the base 10 to support the second inner ring detecting member 22, and the first inner ring mounting member 41 is connected to the base 10 through the second sensor 32 to support the first inner ring detecting member 21. At the same time, the first inner ring mounting member 41 is connected to the second sensor 32, which can play a role in transmitting the inner ring radial force from the first inner ring detecting member 21.

[0082] The inner ring mounting member of this embodiment can support the inner ring detecting member and transmit the radial force of the inner ring. The second diameter is greater than the first diameter and the first inner diameter, so that the size of the inner ring mounting member is larger than that of the inner ring detecting member, which can improve the stability of the detecting mechanism and the detecting device, ensure the stable transmission of the radial force of the seal, and improve the detecting accuracy.

[0083] In some embodiments, as Figures 1 to 5 shown, the base 10 includes a first base 110 and a second base 120. The first sensor 31 is connected to the first base 110, and the second sensor 32 is connected to the second base 120.

[0084] Optionally, the relative positions of the first base 110 and the second base 120 are not limited, but the condition that there is no interference between them should be satisfied. For example, the first base 110 and the second base 120 can be arranged at intervals.

[0085] By connecting the first sensor and the second sensor to different bases respectively in this embodiment, it is possible to avoid the mutual interference of the radial forces of the inner and outer rings during the detection process, improve the stability of the transmission of the radial forces of the inner and outer rings, and improve the detection accuracy.

[0086] In some embodiments, as Figure 1 shown, both the first sensor 31 and the second sensor 32 are of cuboid structure and both extend along the second direction y, and the second direction y is perpendicular to the first direction x. The detecting mechanism 1 further includes:

[0087] A first connecting member 51, connected between the first outer ring detecting member 11 and the first end of the first sensor 31, and the second end of the first sensor 31 is connected to the first base 110; and

[0088] A second connecting member 52, connected between the first inner ring detecting member 21 and the first end of the second sensor 32, and the second end of the second sensor 32 is connected to the second base 120.

[0089] Specifically, both the first sensor 31 and the second sensor 32 can be cantilever beam sensors, with one end fixed and the force applied to the other end to read the magnitude of the force. Specifically, by using the cantilever beam sensor of cuboid structure extending along the second direction y, it is convenient to apply the radial force of the seal to one end of the sensor, and thus it is convenient to detect the radial forces of the inner and outer rings. Optionally, both the first direction x and the second direction y can be in the horizontal plane.

[0090] Specifically, the second end of the first sensor 31 is fixedly connected to the first base 110, the first end is fixedly connected to the first connecting member 51, and the first connecting member 51 is fixedly connected to the first outer ring detection member 11, facilitating the detection of the radial force of the outer ring of the seal 101; the second end of the second sensor 32 is fixedly connected to the second base 120, for example, fixedly connected by bolts, the first end is fixedly connected to the second connecting member 52, the second connecting member 52 is fixedly connected to the first inner ring mounting member 41, and the first inner ring mounting member 41 is fixedly connected to the first inner ring detection member 21, facilitating the detection of the radial force of the inner ring of the seal 101.

[0091] Optionally, the first connecting member 51 and / or the second connecting member 52 may be of a block structure to stably connect or fix to other components of the detection mechanism. Optionally, the above-mentioned fixed connection may be a fixed connection through fasteners such as bolts, or may be a fixed connection through a bayonet structure, a mortise and tenon structure, etc. by means of snap connection or lap joint.

[0092] This embodiment can facilitate the transmission and detection of the radial forces of the inner and outer rings by providing connecting members and sensors with a cuboid structure extending in the second direction, improving the stability of the detection mechanism and the detection device itself as well as the stability of the detection results, increasing the response speed of the detection mechanism and the detection device, and ensuring the stability and reliability of the detection results.

[0093] In some embodiments, as Figure 1 shown, the first connecting member 51 is provided with a first square hole, the first base 110 is a flat plate structure and the first base 110 has a first groove 111, the first end of the first sensor 31 is connected to the first square hole, and the second end of the first sensor 31 is connected to the first groove 111; and / or

[0094] the second connecting member 52 is provided with a second square hole, the second base 120 includes a first plate 121, a second plate 122 and a third plate 123, the first plate 121 and the second plate 122 are arranged opposite to each other along the second direction y, the third plate 123 is connected between the first plate 121 and the second plate 122, the second plate 122 is provided with a second groove 124, the first end of the second sensor 32 is connected to the second square hole, and the second end of the second sensor 32 is connected to the second groove 124.

[0095] Specifically, the first end of the first sensor 31 is fixedly connected to the first square hole to receive the radial force of the outer ring transmitted from the first outer ring detection member 11, and the second end of the first sensor 31 is fixedly connected to the first groove 111 as a fixed end; the first end of the second sensor 32 is fixedly connected to the second square hole to receive the radial force of the inner ring transmitted from the first inner ring detection member 21, and the second end of the second sensor 32 is fixedly connected to the second groove 124 as a fixed end.

[0096] In this embodiment, the first sensor and the second sensor are respectively fixedly connected to different base stations through the square hole and groove structures, which can avoid the mutual interference of the radial forces of the inner and outer rings during the detection process and improve the detection accuracy. At the same time, the square hole and groove structures make the overall structural layout of the detection mechanism simple and stable, which can facilitate the transmission and detection of the radial forces of the inner and outer rings, improve the response speed of the detection mechanism and the detection device, and ensure the stability and reliability of the detection results.

[0097] In some embodiments, as Figure 1 and Figure 3 shown, the seal radial force detection device further includes:

[0098] A first driving mechanism 2, including a power output rod 23, the power output rod 23 is connected to the slot hole 13 of the second outer ring detection member 12, and the first driving mechanism 2 is configured to drive the second outer ring detection member 12 to move along the first direction x.

[0099] Specifically, the first driving mechanism 2 is connected to the slot hole 13 through the power output rod 23, and then connected to the second outer ring detection member 12, and can drive the second outer ring detection member 12 to move along the first direction x in the positive and negative directions, so as to facilitate the removal of the seal 101 after the radial force test is completed.

[0100] Specifically, when the seal 101 is in interference fit with the side wall of the annular groove, after the radial force detection is completed, the first driving mechanism 2 is used to drive the second outer ring detection member 12 to move away from the first outer ring detection member 11 to relieve the interference fit force of the outer ring. Generally, the interference fit force of the inner ring is not large and can be easily removed manually. After replacing the seal 101 or changing the circumferential angle of the seal 101, the first driving mechanism is used to drive the second outer ring detection member 12 to move closer to the first outer ring detection member 11 to make the second outer ring detection member 12 return to the initial position, which is convenient for the next installation or radial force detection of the seal 101.

[0101] Optionally, the first driving mechanism 2 can be a cylinder or the like. Optionally, the detection device may further include a fixed mounting member 24, one end of the fixed mounting member 24 is fixedly connected to the first driving mechanism 2, and the other end is fixedly connected to the base 4, which can support the first driving mechanism 2. Optionally, the detection device may further include a controller 102, which is configured to control the first driving mechanism 2 to drive the second outer ring detection member 12 to move.

[0102] The detection device of this embodiment can drive the second outer ring detection member to move along the first direction through the first driving mechanism, which can make the removal and / or circumferential angle change of the seal more convenient, improve the automation level of the detection device, and improve the use experience of the operator.

[0103] In some embodiments, as Figure 3As shown, the seal radial force detection device further includes:

[0104] A pressing tooling 3, configured to press the seal 101 into the annular groove along the third direction z. The bottom surface of the pressing tooling 3 is perpendicular to the third direction z, and the third direction z is perpendicular to the first direction x.

[0105] Specifically, the third direction z can be the vertical direction. The pressing tooling 3, i.e., the downward pressing tooling, can be used for pressing the seal 101 and installing the seal 101 into the annular groove of the detection mechanism 1.

[0106] The bottom surface of the pressing tooling in this embodiment is perpendicular to the third direction, which can play a role of applying force in a plane, reduce the force for pressing the seal, make the process of pressing the seal smoother, avoid damaging the seal during the detection of the radial force, and thus improve the detection accuracy and reliability of the detection device.

[0107] In some embodiments, as Figure 3 shown, the seal radial force detection device further includes:

[0108] A base 4, on which a base platform 10 is installed;

[0109] A guiding column 5, arranged on the base 4 and extending along the third direction z; and

[0110] A movable plate 6, movably arranged on the guiding column 5 along the guiding column 5 and perpendicular to the third direction z. The movable plate 6 is fixedly connected to the pressing tooling 3.

[0111] Specifically, a first base platform 110 and a second base platform 120 can be installed on the base 4. The base 4 can play a supporting role and can also improve the self-stability of the detection device and the stability during the detection process. Specifically, the guiding column 5 can serve as a slide rail for the movable plate 6 to move along the third direction z. The movable plate 6 is used to fix the pressing tooling 3, which can increase the stability of the pressing tooling 3 moving along the third direction or the up and down direction, and thus improve the stability of applying force for pressing the seal 101.

[0112] The base, guiding column and movable plate in this embodiment are organically combined with the pressing tooling, detection mechanism, etc. The overall structure is simple and stable, which can improve the self-stability of the detection device, the stability of applying force for pressing the seal 101, the detection stability and the detection accuracy.

[0113] In some embodiments, as Figure 3 shown, the seal radial force detection device further includes:

[0114] A housing 7, arranged on the base 4 and at least partially covering the outside of the detection mechanism 1.

[0115] Specifically, the housing 7 is fixedly mounted on the base 4. The first outer ring detection member 11, the second outer ring detection member 12, the first inner ring detection member 21, and the second inner ring detection member 22 of the detection mechanism 1 are located outside the housing 7, or protrude from the top plate of the housing 7, and other components of the detection mechanism 1 are located inside the housing 7. Optionally, the top plate of the housing 7 should also be provided with a gap, and the top plate of the housing 7 is spaced apart from the first outer ring detection member 11 and the second outer ring detection member 12 to avoid affecting the detection accuracy.

[0116] In this embodiment, by covering the detection mechanism with the housing, the detection mechanism can be protected, the detection accuracy of the detection mechanism can be improved, and at the same time, the overall aesthetics of the detection device is facilitated.

[0117] In some embodiments, as Figure 3 shown, the seal radial force detection device further includes:

[0118] A fixing plate 8, fixed to the end of the guide post 5 away from the base 4; and

[0119] A second driving mechanism 9, provided on the fixing plate 8, configured to drive the movable plate 6 and the pressing tooling 3 to move in the third direction z.

[0120] Specifically, the fixing plate 8 is used to fix the second driving mechanism 9. The detection device may include a fastener 53 for positioning the position of the fixing plate 8. By adjusting the position of the fastener 53, the position of the fixing plate 8 on the guide post 5, or the height of the fixing plate 8, can be changed. For example, the fastener 53 can be a nut, and the position of the fixing plate 8 can be positioned by the nut, and the height of the fixing plate 8 can be changed by adjusting the nut up and down. Optionally, the second driving mechanism 9 can be a servo motor or the like. Optionally, the detection device may further include a controller 102, configured to control the second driving mechanism 9 to drive the movable plate 6 and the pressing tooling 3 to move. Specifically, the controller 102 can also be used for reading the detection results of the detection mechanism 1 and data analysis.

[0121] In this embodiment of the detection device, the second driving mechanism drives the movable plate and the pressing tooling to move in the third direction, which can apply force to press the seal smoothly, make the process of pressing the seal more stable, improve the self-stability and detection stability of the detection device, and at the same time, the driving mechanism can improve the automation level of the detection device and improve the use experience of the operator.

[0122] In some embodiments, as Figure 3 shown, there are multiple guide posts 5, and the projections of the multiple guide posts 5 in the plane perpendicular to the third direction z are located outside the projection of the detection mechanism 1 in the plane perpendicular to the third direction z.

[0123] Specifically, the projections of the multiple guide posts 5 in the plane perpendicular to the third direction z are located outside the projection of the housing 7 in the plane perpendicular to the third direction z.

[0124] In this embodiment, by making the projection of the guide post located outside the detection mechanism, the overall detection device is a frame mechanism with a cuboid structure, which has a reasonable layout and stable force application, and can improve the self-stability and detection stability of the detection device.

[0125] Secondly, the present disclosure provides a method for detecting the radial force of a seal for the seal radial force detection device based on the above embodiment. In the following, some embodiments are simply referred to as the "detection method". The detection method includes:

[0126] Install the seal 101 in the annular groove of the detection mechanism 1 along the third direction z, and the third direction z is perpendicular to the first direction x;

[0127] Obtain the outer ring radial force F and the inner ring radial force P of the seal 101 through the first sensor 31 and the second sensor 32 respectively.

[0128] Specifically, the third direction z can be the vertical direction.

[0129] The seal radial force detection method of this embodiment can conveniently and effectively detect the radial force of the seal under different interference amounts, roughness, hardness and other conditions, and then extract the key factors affecting the radial force of the seal, so as to guide the formulation of key parameters for seal connection, improve the connection reliability and stability of the seal, and improve the use performance of the product.

[0130] In some embodiments, obtaining the outer ring radial force F and the inner ring radial force P of the seal 101 includes:

[0131] Install the seal 101 in the annular groove at different N circumferential angles;

[0132] For the i-th circumferential angle, obtain the outer ring radial force fi of the seal 101 through the first sensor 31, and obtain the inner ring radial force pi of the seal 101 through the second sensor 32; where i = 1, 2... N until all N circumferential angles are detected;

[0133] Calculate the outer ring radial force F = (f1 + f2 + fi +... + fn) / N, and calculate the inner ring radial force P = (p1 + p2 + pi +... + pn) / N.

[0134] Optionally, the N circumferential angles can be N equally divided circumferential angles or non-equally divided circumferential angles.

[0135] The detection method of this embodiment can reduce the measurement error and further improve the detection accuracy of the inner and outer ring radial forces of the seal by measuring the inner and outer ring radial forces of the seal at multiple different circumferential angles and calculating the average value.

[0136] In some embodiments, mounting the seal 101 at different circumferential angles N in the annular groove further includes:

[0137] Placing the seal 101 above the annular groove and making marks at the intersection of the seal 101 and the gap;

[0138] According to the marks, the seal 101 is rotated clockwise or counterclockwise in sequence to 360°*i / N relative to the initial angle, where i = 1, 2... N-1;

[0139] The second driving mechanism 9 is made to drive the pressing tooling 3 to move in the third direction z towards the base 4 to mount the seal 101 in the annular groove.

[0140] Specifically, the movement of the pressing tooling 3 in the third direction z can be the movement of the pressing tooling 3 along the guide post 5. Optionally, the seal 101 can be rotated clockwise in sequence to 360°*i / N relative to the initial angle, or can be rotated counterclockwise in sequence to 360°*i / N relative to the initial angle. For example, when N = 4, the seal 101 can be rotated clockwise in sequence to 90°, 180° and 270° relative to the initial angle.

[0141] The detection method of this embodiment can reduce the measurement error and further improve the detection accuracy of the radial forces of the inner and outer rings of the seal by detecting the radial forces of the inner and outer rings of the seal at multiple equally divided circumferential angles through the marks at the gap and calculating the average value; by pressing and installing the seal by the second driving mechanism, the automation level can be improved and the use experience of the operator can be improved.

[0142] In some embodiments, mounting the seal 101 at different circumferential angles N in the annular groove further includes:

[0143] The first driving mechanism 2 is made to drive the second outer ring detection member 12 to move in the first direction x away from the first outer ring detection member 11, so as to facilitate taking out and rotating the seal 101 from the annular groove in the third direction z; and / or

[0144] The first driving mechanism 2 is made to drive the second outer ring detection member 12 to move in the first direction x towards the first outer ring detection member 11, so that the second outer ring detection member 12 returns to the initial position.

[0145] The detection method of this embodiment can make it more convenient to take out and / or change the circumferential angle of the seal by making the first driving mechanism drive the second outer ring detection member to move, improve the automation level, and improve the use experience of the operator.

[0146] In some specific embodiments, such as Figures 1 to 3As shown, the seal radial force detection device further includes a first driving mechanism 2, a second driving mechanism 9, a movable plate 6, and a pressing tooling 3. The seal 101 is installed in the annular groove at 4 equally divided circumferential angles. The seal radial force detection method includes:

[0147] Place the seal 101 above the annular groove and make a mark at the intersection of the seal 101 and the gap;

[0148] Enable the second driving mechanism 9 to drive the movable plate 6 and the pressing tooling 3 to move in the direction of the third direction z towards the base 4 to install the seal 101 in the annular groove;

[0149] Obtain the outer ring radial force f1 of the seal 101 through the first sensor 31, and obtain the inner ring radial force p1 of the seal 101 through the second sensor 32;

[0150] After the first detection is completed, enable the first driving mechanism 2 to drive the second outer ring detection member 12 to move in the first direction x away from the first outer ring detection member 11, so as to take out the seal 101 from the annular groove in the third direction z;

[0151] Enable the first driving mechanism 2 to drive the second outer ring detection member 12 to move in the first direction x towards the first outer ring detection member 11, so that the second outer ring detection member 12 returns to the initial position;

[0152] Repeat the above steps for the second to fourth detections. Rotate the seal 101 counterclockwise to 90°, 180°, 270° relative to the initial angle respectively according to the mark. Obtain the outer ring radial forces f2, f3, f4 through the first sensor 31 respectively, and obtain the inner ring radial forces p2, p3, p4 through the second sensor 32 respectively;

[0153] Calculate the outer ring radial force F = (f1 + f2 + f3 + f4) / 4, and calculate the inner ring radial force P = (p1 + p2 + p3 + p4) / 4.

[0154] The detection method of this embodiment can conveniently and effectively detect the radial force of the seal under different interference amounts, roughness, hardness and other conditions; it can reduce the measurement error and improve the detection accuracy of the inner and outer ring radial forces of the seal; it can improve the automation level and improve the use experience of the operator.

[0155] In some embodiments, by setting a positioning sensor and a manipulator assembly on the seal radial force detection device, etc., the automatic execution of the seal radial force detection method of the above embodiment can be realized through programming the controller 102.

[0156] The above has introduced in detail a sealing element radial force detection device and a detection method provided by the present disclosure. Specific embodiments are used herein to elaborate on the principle and implementation manner of the present disclosure. The description of the above embodiments is only used to help understand the method of the present disclosure and its core idea. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present disclosure, several improvements and modifications can be made to the present disclosure, and these improvements and modifications also fall within the protection scope of the claims of the present disclosure.

Claims

1. A radial force detection device for a seal, characterized in that, Comprising a detection mechanism (1), the detection mechanism (1) includes: A base (10); A first outer ring detection member (11) and a second outer ring detection member (12), both of which are semi-cylindrical structures and have the same first inner diameter and first outer diameter. The first outer ring detection member (11) and the second outer ring detection member (12) are spaced apart along a first direction (x) and form a gap; A first inner ring detection member (21) and a second inner ring detection member (22), both of which are semi-cylindrical structures and have the same first diameter. The first diameter is smaller than the first inner diameter. The first inner ring detection member (21) and the second inner ring detection member (22) are spaced apart along the first direction (x) and form a gap. An annular groove is formed between the first inner ring detection member (21) and the second inner ring detection member (22) and between the first outer ring detection member (11) and the second outer ring detection member (12) for accommodating a seal (101); A first sensor (31), connected between the first outer ring detection member (11) and the base (10), configured to detect the radial force of the outer ring of the seal (101); and A second sensor (32), connected between the first inner ring detection member (21) and the base (10), configured to detect the radial force of the inner ring of the seal (101).

2. The seal radial force detection device according to claim 1, wherein, When the seal (101) is installed in the annular groove, the outer wall of the annular groove is configured to have an interference fit with the outer ring of the seal (101), and the inner wall of the annular groove is configured to have an interference fit with the inner ring of the seal (101).

3. The seal radial force detection device according to claim 1, wherein The detection mechanism (1) further includes: A first inner ring mounting member (41) and a second inner ring mounting member (42), both of which are semi-cylindrical structures and have the same second diameter. The second diameter is larger than the first diameter and the first inner diameter, and the second diameter is smaller than the first outer diameter. The first inner ring mounting member (41) is connected between the first inner ring detection member (21) and the base (10), and the second inner ring mounting member (42) is connected between the second inner ring detection member (22) and the base (10). The first inner ring mounting member (41) and the second inner ring mounting member (42) are spaced apart along the first direction (x) and form a gap.

4. The seal radial force detection device according to claim 1, characterized in that, The base (10) includes a first base (110) and a second base (120). The first sensor (31) is connected to the first base (110), and the second sensor (32) is connected to the second base (120).

5. The seal radial force detection device according to claim 4, wherein Both the first sensor (31) and the second sensor (32) are rectangular parallelepiped structures and extend along a second direction (y). The second direction (y) is perpendicular to the first direction (x). The detection mechanism (1) further includes: A first connecting member (51), connected between the first outer ring detection member (11) and the first end of the first sensor (31). The second end of the first sensor (31) is connected to the first base (110); and A second connecting member (52) is connected between the first inner ring detecting member (21) and the first end of the second sensor (32), and the second end of the second sensor (32) is connected to the second base (120).

6. The seal radial force detecting device according to claim 5, wherein a first square hole is provided on the first connecting member (51), the first base (110) is a flat plate structure and the first base (110) has a first groove (111), the first end of the first sensor (31) is connected to the first square hole, and the second end of the first sensor (31) is connected to the first groove (111); and / or a second square hole is provided on the second connecting member (52), the second base (120) includes a first plate (121), a second plate (122) and a third plate (123), the first plate (121) and the second plate (122) are oppositely arranged along the second direction (y), the third plate (123) is connected between the first plate (121) and the second plate (122), a second groove (124) is provided on the second plate (122), the first end of the second sensor (32) is connected to the second square hole, and the second end of the second sensor (32) is connected to the second groove (124).

7. The seal radial force detection device according to any one of claims 1 to 6, characterized in that, Further comprising: A first driving mechanism (2) includes a power output rod (23), the power output rod (23) is connected to a slot hole (13) of the second outer ring detecting member (12), and the first driving mechanism (2) is configured to drive the second outer ring detecting member (12) to move along the first direction (x).

8. The seal radial force detection device according to any one of claims 1 to 6, characterized in that Further comprising: A pressing tooling (3) is configured to press the seal (101) into the annular groove along the third direction (z), the bottom surface of the pressing tooling (3) is perpendicular to the third direction (z), and the third direction (z) is perpendicular to the first direction (x).

9. The seal radial force detection device according to claim 8, wherein Further comprising: A base (4) on which the base (10) is mounted; A guide post (5) is provided on the base (4) and extends along the third direction (z); and A movable plate (6) is movably provided on the guide post (5) along the guide post (5) and is perpendicular to the third direction (z), and the movable plate (6) is fixedly connected to the pressing tooling (3).

10. The seal radial force detection device according to claim 9, characterized in that, Further comprising: A housing (7) is provided on the base (4) and at least partially covers the outside of the detecting mechanism (1).

11. The seal radial force detection device according to claim 9, characterized in that, Further comprising: A fixing plate (8) is fixed to one end of the guide post (5) away from the base (4); and A second driving mechanism (9) is provided on the fixing plate (8) and is configured to drive the movable plate (6) and the pressing tooling (3) to move along the third direction (z).

12. The seal radial force detection device according to claim 9, wherein A plurality of the guide posts (5) are provided, and the projections of the plurality of guide posts (5) in a plane perpendicular to the third direction (z) are located outside the projection of the detecting mechanism (1) in a plane perpendicular to the third direction (z).

13. A method for detecting the radial force of a seal for the seal radial force detection device according to any one of claims 1 to 12, characterized in that, Comprising: Install the seal (101) in the annular groove of the detection mechanism (1) along the third direction (z), where the third direction (z) is perpendicular to the first direction (x). Obtain the outer ring radial force F and the inner ring radial force P of the seal (101) through the first sensor (31) and the second sensor (32) respectively.

14. The method for detecting the radial force of the seal according to claim 13, characterized in that, Obtaining the outer ring radial force F and the inner ring radial force P of the seal (101) includes: Install the seal (101) in the annular groove at different N circumferential angles. For the i-th circumferential angle, obtain the outer ring radial force fi of the seal (101) through the first sensor (31), and obtain the inner ring radial force pi of the seal (101) through the second sensor (32); where i = 1, 2…N until all N circumferential angles are detected. Calculate the outer ring radial force F = (f1 + f2 + fi + … + fn) / N, and calculate the inner ring radial force P = (p1 + p2 + pi + … + pn) / N.

15. The method for detecting the radial force of the seal according to claim 14, characterized in that, Installing the seal (101) in the annular groove at different N circumferential angles further includes: Place the seal (101) above the annular groove and make a mark at the intersection of the seal (101) and the gap. According to the mark, rotate the seal (101) clockwise or counterclockwise in sequence to 360°*i / N relative to the initial angle, where i = 0, 1, 2…N - 1. Make the second driving mechanism (9) drive the pressing tooling (3) to move in the direction close to the base (4) along the third direction (z) to install the seal (101) in the annular groove.

16. The method for detecting the radial force of the seal according to claim 14, characterized in that, Installing the seal (101) in the annular groove at different N circumferential angles further includes: Make the first driving mechanism (2) drive the second outer ring detection part (12) to move in the first direction (x) away from the first outer ring detection part (11), so as to take out and rotate the seal (101) upward along the third direction (z) from the annular groove. and / or Make the first driving mechanism (2) drive the second outer ring detection part (12) to move in the first direction (x) close to the first outer ring detection part (11), so that the second outer ring detection part (12) returns to the initial position.

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