Gap measurement method

Abstract

The present invention provides a gap measurement method, which relates to the technical field of gap measurement. The gap measurement method includes: aligning a first structure of a setting device and setting the first surface of the first structure to face upward; arranging a marking unit at the first surface of the first structure; arranging a unit to be marked at the second surface of a second structure of the setting device; positioning the second structure according to a preset positioning method; obtaining a first distance between the top of a marked portion of the unit to be marked marked by the marking unit and the bottom of the unit to be marked; obtaining a second distance according to the first distance, the relative position information between the top of the marking unit and the first surface, and the relative position information between the bottom of the unit to be marked and the second surface, the second distance being used to characterize the distance between the first surface and the second surface when the second structure is positioned according to the preset positioning method.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, and in particular to a gap measurement method. Background Art

[0002] In devices such as planetary reduction gears, crank-connecting rod devices and screw transmission devices, the clearance control between components is extremely important for the precision control and reliability of the equipment. Taking the planetary reduction gear as an example, the control of the relative position of the two meshing gears in the axial direction is extremely important. Generally, it is necessary to measure the clearance between the sun gear and the planet carrier where the planetary gear meshing with the sun gear is located. In some cases, the assembly or repair strategy of the planetary reduction gear can be adjusted based on the clearance.

[0003] In the related art, for those locations that are vertically installed or difficult to measure directly, the lead pressing method is usually used to measure the gap. This measurement method has limited measurement accuracy and requires multiple attempts with lead wires of different diameters to obtain more accurate data. The operation process is relatively cumbersome, which affects the efficiency of equipment assembly and repair. Summary of the invention

[0004] The present invention aims to solve the problem of how to improve the efficiency and accuracy of gap measurement between components in the related art to a certain extent.

[0005] In order to solve at least one aspect of the above problems to at least a certain extent, the present invention provides a gap measurement method, the gap measurement method comprising:

[0006] Aligning the first structure of the setting device and arranging the first surface of the first structure to face upward;

[0007] arranging a marking unit at the first surface of the first structure;

[0008] Arranging a unit to be marked on a second surface of a second structure of the setting device;

[0009] Positioning the second structure in accordance with a preset positioning method, when the second structure is positioned in the preset positioning method, the second surface is arranged opposite to the first surface, and the marking unit marks the unit to be marked by contacting the unit to be marked, wherein the second structure is positioned in the preset positioning method when the setting device is in an assembled state;

[0010] Acquire a first distance between a top end of a marked portion of the unit to be marked marked by the marking unit and a bottom end of the unit to be marked;

[0011] A second distance is obtained based on the first distance, the relative position information between the top end of the marking unit and the first surface, and the relative position information between the bottom end of the unit to be marked and the second surface. The second distance is used to characterize the distance between the first surface and the second surface when the second structure is positioned according to the preset positioning method.

[0012] Optionally, a first positioning portion is provided on the second structure, the first structure is mounted on a first seat of the setting device, and a second positioning portion is provided on the first seat;

[0013] The first structure of the setting device is straightened and the first surface of the first structure is arranged upwards, including: adjusting the posture of the first seat on which the first structure is installed so that the first structure is straightened;

[0014] Positioning the second structure according to a preset positioning method includes: adjusting the posture of the second structure relative to the first seat so that the second positioning portion is positioned and connected to the first positioning portion; when the first positioning portion is positioned and connected to the second positioning portion, the second structure is supported on the second positioning portion through the first positioning portion.

[0015] Optionally, the setting device further comprises a wear-resistant plate; when the setting device is in the assembled state, the first structure and the second structure are arranged in the installation cavity of the setting device, at least the portion of the second structure where the second surface is located and the first structure can be relatively moved in a direction perpendicular to the first surface, and the first structure and the second structure are provided with the wear-resistant plate at the first surface;

[0016] In the gap measurement method, when the wear-resistant plate is not provided between the first structure and the second structure, the second structure is positioned according to the preset positioning method;

[0017] The first distance is at least used to estimate a required thickness value of the wear-resistant plate.

[0018] Optionally, the unit to be marked and the marking unit undergo a chemical reaction by contact to obtain the marked portion; the color of the marked portion is different from the color of the portion other than the marked portion on the unit to be marked.

[0019] Optionally, the marking unit includes a solution, and the solution is used to mark the portion of the unit to be marked immersed in the solution to obtain the marked portion; the color of the marked portion is different from the color of the portion of the unit to be marked other than the marked portion.

[0020] Optionally, the solution is contained in a first container.

[0021] Optionally, the unit to be marked includes a columnar structure, and the columnar structure is used to form the marked portion;

[0022] After obtaining the second distance according to the first distance, the relative position information between the top end of the marking unit and the first surface, and the relative position information between the bottom end of the unit to be marked and the second surface, the gap measurement method further includes:

[0023] generating a distance correction value according to the first distance, the cross-sectional area of ​​the columnar structure and the bottom area of ​​the first container, wherein the distance correction value is used to characterize the height of the liquid level rise of the solution caused by the marked portion being immersed in the solution;

[0024] The second distance is corrected according to the distance correction value.

[0025] Optionally, the first surface is concave downward to form a first groove-shaped structure, and the first groove-shaped structure is used to arrange the marking unit;

[0026] Before positioning the second structure according to the preset positioning method, the gap measurement method further includes:

[0027] Obtaining the depth of the first groove-shaped structure;

[0028] Obtaining the distance between the liquid surface of the solution and the outer bottom surface of the first container;

[0029] A third distance from the liquid surface of the solution to the first surface is obtained according to the depth of the first groove structure and the distance from the liquid surface of the solution to the outer bottom surface of the first container; the relative position information between the top of the marking unit and the first surface includes the third distance.

[0030] Optionally, the first groove-shaped structure is used to form at least a portion of a flow channel of the first structure, and the flow channel is used for the passage of lubricating oil or refrigerant;

[0031] And / or, the first container has a liquid level scale, and the scale lines of the liquid level scale are used to indicate the distance between the corresponding scale lines and the outer bottom surface of the first container.

[0032] Optionally, the second surface is upwardly concave to form a second groove-shaped structure; the step of arranging the unit to be marked on the second surface of the second structure of the setting device comprises: arranging at least part of the unit to be marked in the second groove-shaped structure;

[0033] Before positioning the second structure according to the preset positioning method, the gap measurement method further includes:

[0034] Obtaining the depth of the second groove-like structure;

[0035] Obtaining the distance between the bottom end of the unit to be marked and the bottom of the second groove-shaped structure;

[0036] The distance between the bottom end of the unit to be marked and the second surface is obtained according to the depth of the second groove-like structure and the distance between the bottom end of the unit to be marked and the bottom of the second groove-like structure; the relative position information between the bottom end of the unit to be marked and the second surface includes the distance between the bottom end of the unit to be marked and the second surface.

[0037] In the present invention, by arranging a marking unit on the first surface of the first structure and arranging a unit to be marked on the second surface of the second structure, the second structure is positioned in a preset positioning manner when the first structure is aligned, so that the state of the setting device in an assembled state can be simulated, and the relative positions of the first structure and the second structure are at (can be approximately at, and approximately can be understood as, for example, ignoring the influence of tolerance) the relative positions of the first structure and the second structure when they are actually put into use, the second surface of the second structure is arranged opposite to the first surface, or the first surface and the second surface are parallel, and the marking unit marks the unit to be marked by contacting with the unit to be marked; thereby, the marked information of the unit to be marked by the marking unit can be obtained, specifically, the first position between the top of the marked part of the unit to be marked and the bottom of the unit to be marked can be obtained. Distance, for example, when the marking unit is a solution, the first distance corresponds to the depth of the marked unit immersed in the solution, and the second distance between the first surface of the first structure and the second surface of the second structure can be obtained according to the first distance, the relative position information between the top of the marking unit and the first surface (this relative position information includes the distance between the top of the marking unit and the first surface, such as the third distance between the liquid surface of the solution and the first surface) and the relative position information between the bottom of the unit to be marked and the second surface (this relative position information includes the fourth distance between the bottom surface of the unit to be marked and the second surface), so that the relative position between the first surface of the first structure and the second surface of the second structure in actual use can be evaluated according to the second distance, providing a reliable evaluation basis for the assembly of the two. The method is relatively simple, the data obtained by detection is relatively accurate, and it is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Schematic diagram of the flow of the gap measurement method in an embodiment of the present invention;

[0039] Figure 2 The schematic diagram of the reducer in the embodiment of the present invention;

[0040] Figure 3 is a schematic diagram of a first distance and multiple distances in an embodiment of the present invention;

[0041] Figure 4 This is a schematic structural diagram of a first surface of a reducer in an embodiment of the present invention, which is concave downward to form a first groove-shaped structure.

[0042] Description of reference numerals:

[0043] 1-first structure; 11-first groove-shaped structure; 12-first sun gear; 2-second structure; 21-first positioning portion; 22-second groove-shaped structure; 23-first planetary carrier; 24-first planetary gear; 25-first bearing; A1-first surface; A2-second surface; A3-liquid level; 3-marking unit; 4-unit to be marked; 41-fixed seat; 42-columnar structure; 43-marked portion; 5-first seat; 51-second positioning portion; 511-vertical cylinder portion; 512-first horizontal positioning surface; 52-first ring gear; 6-first container; L1-first distance; L2-second distance; L3-third distance; L4-fourth distance. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment", "some embodiments", "exemplarily" and "one embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiment are included in at least one embodiment or embodiment of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or embodiments in a suitable manner.

[0047] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0048] In the drawings, the Z axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis (that is, the direction of the arrow of the Z axis) represents the up, and the negative direction of the Z axis represents the down; the X axis in the drawings represents the front and back position, and the positive direction of the X axis (that is, the direction of the arrow of the X axis) represents the front side, and the negative direction of the X axis represents the back side; the Y axis in the drawings represents the horizontal direction and is designated as the left and right position, and the positive direction of the Y axis (that is, the direction of the arrow of the Y axis) represents the right side, and the negative direction of the Y axis represents the left side; it should be noted that the aforementioned Z axis, Y axis and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0049] like Figures 1 to 4 As shown, the present invention provides a gap measurement method, which includes the following steps S1-S6. The gap measurement method is used to measure the distance between the first surface A1 of the first structure 1 and the second surface A2 of the second structure 2 when the second structure 2 and the first structure 1 are relatively positioned, that is, the second distance L2 described later.

[0050] Steps S1-S6 will be described in detail below, but it should be understood in the art that the order of the above steps is not limited without violating the design concept of the present invention. For example, step S2 and step S3 can be interchangeable.

[0051] Step S1 , aligning the first structure 1 of the setting device and arranging the first surface A1 of the first structure 1 to face upward.

[0052] Step S2 , arranging a marking unit 3 on the first surface A1 of the first structure 1 .

[0053] Step S3, arranging the unit 4 to be marked on the second surface A2 of the second structure 2 of the setting device.

[0054] Step S4, positioning the second structure 2 according to a preset positioning method, when the second structure 2 is positioned in the preset positioning method, the second surface A2 is arranged opposite to the first surface A1, and the marking unit 3 marks the unit to be marked 4 by contacting with the unit to be marked 4, wherein the second structure 2 is positioned using the preset positioning method when the setting device is in an assembled state.

[0055] Step S5 , obtaining a first distance L1 between the top of the marked portion 43 of the unit 4 to be marked by the marking unit 3 and the bottom of the unit 4 to be marked.

[0056] Step S6, obtaining a second distance L2 according to the first distance L1, the relative position information between the top end of the marking unit 3 and the first surface A1, and the relative position information between the bottom end of the unit to be marked 4 and the second surface A2, wherein the second distance L2 is used to characterize the distance between the first surface A1 and the second surface A2 when the second structure 2 is positioned according to the preset positioning method.

[0057] In step S1 of this embodiment, it is usually necessary to adjust the posture of the first structure 1 so that its first surface A1 is in a horizontal state. For example, leveling can be performed in conjunction with a horizontal detection device. However, it should be understood that if the first surface A1 is in a non-horizontal state and the angle between the first surface A1 and the horizontal plane is large, for example, when the angle is greater than 30°, at least part of the data in this method can be corrected according to the angle to reduce the error of the measurement data caused by the angle, so that the final data meets the corresponding usage requirements. In other words, the final first distance L1, second distance L2, third distance L3, etc. can be understood as the distance in the direction perpendicular to the first surface A1. The method will be described later with the first surface A1 adjusted to a horizontal state.

[0058] In step S2 of this embodiment, the arrangement of the marking unit 3 on the first surface A1 is not limited, and the marking unit 3 can subsequently mark the unit to be marked 4 by contact.

[0059] In step S3 of this embodiment, when arranging the unit to be marked 4 on the second surface A2, it is usually necessary to fix the position of the unit to be marked 4 relative to the marking unit 3, and the position of the unit to be marked 4 needs to correspond to the position of the marking unit 3 in step S2, so that when the second structure 2 is subsequently positioned in a preset positioning manner, the unit to be marked 4 and the marking unit 3 can contact. The fixing method of the unit to be marked 4 is not limited, and it can be fixed to the second structure 2 by, for example, bonding, magnetic adsorption, snap-fit, etc. The portion of the unit to be marked 4 that contacts the marking unit 3 will be marked, and the marked portion of the unit to be marked 4 is the marked portion 43.

[0060] Exemplarily, in order to facilitate the acquisition of the marked information of the unit to be marked 4 marked by the marking unit 3, at least part of the unit to be marked 4 is set as a columnar structure 42, and when the unit to be marked 3 is fixed to the second structure 2, the columnar structure 42 is preferably perpendicular to the second surface A2, so that the length of the marked portion 43 of the unit to be marked 4 can be measured, and the length is the first distance L1. In other words, the first distance L1 can be defined as the distance between the top of the marked portion 43 of the unit to be marked 4 and the bottom of the unit to be marked 4 in the direction perpendicular to the second surface A2.

[0061] In step S4 of this embodiment, it should be understood that, according to the structural and positional differences between the first structure 1, the second structure 2 and the corresponding first surface A1 and the second surface A2, the relative positioning method between the second structure 2 and the first structure 1 may be different, and relevant technologies may be used. The second distance L2 obtained by the gap measurement method of the present invention is usually used to reflect the theoretical distance between the first surface A1 and the second surface A2 when actually put into use. The distance between the first surface A1 and the second surface A2 actually used (hereinafter referred to as the target distance) is determined according to the first distance L1 and the corresponding arrangement requirements such as tolerances, that is, the measured second distance L2 can be used to determine the target distance. In some scenarios, the assembly scheme of the first structure 1 and the second structure 2 when actually put into use can be adjusted according to the first distance L1. It will be described in conjunction with specific embodiments later. The second distance L2 can be understood as the distance between the two surfaces in the direction perpendicular to the first surface A1 and the second surface A2. When the second structure 2 is positioned in a preset positioning manner, the first surface A1 and the second surface A2 are arranged relative to each other, and under ideal conditions, the two are parallel.

[0062] In step S5 of the present embodiment, the method of obtaining the marked information of the unit to be marked 4 is not limited. Generally, the second structure 2 is positioned according to a preset positioning method, so that the marking unit 3 marks the unit to be marked 4 by contact, and then the second structure 2 is removed, and the length of the marked part 43 of the unit to be marked 4 is measured by physical measurement such as caliper or electronic measurement, thereby obtaining the above-mentioned first distance L1.

[0063] In step S6 of this embodiment, refer to Figure 3 As shown, taking the marking unit 3 as a solution as an example, the relative position information between the top of the marking unit 3 and the first surface A1 includes the distance between the top of the marking unit 3 and the first surface A1, that is, Figure 3 The third distance L3 between the liquid surface A3 of the solution and the first surface A1 can be measured in advance.

[0064] The relative position information between the bottom end of the unit to be marked 4 and the second surface A2 includes the distance between the bottom end of the unit to be marked 4 and the second surface A2, that is, the distance between the bottom surface of the columnar structure 42 of the unit to be marked 4 and the second surface A2, that is, Figure 3 The fourth distance L4 is shown.

[0065] Based on the first distance L1, the third distance L3 and the fourth distance L4, as Figure 3 In the scenario shown, the second distance L2 is the distance obtained by subtracting the first distance L1 from the sum of the third distance L3 and the fourth distance L4.

[0066] Thus, in this embodiment, by arranging the marking unit 3 at the first surface A1 of the first structure 1 and arranging the unit to be marked 4 at the second surface A2 of the second structure 2, the second structure 2 is positioned in a preset positioning manner when the first structure 1 is straightened, and the state of the setting device in the assembly state can be simulated, and the relative positions of the first structure 1 and the second structure 2 are at (can be approximately at, and approximately can be understood as, for example, ignoring the influence of tolerance) the relative positions of the first structure 1 and the second structure 2 when they are actually put into use, and the second surface A2 of the second structure 2 is arranged opposite to the first surface A1, or the first surface A1 and the second surface A2 are parallel, and the marking unit 3 marks the unit to be marked 4 by contacting with the unit to be marked 4; thereby, the marked information of the unit to be marked 4 marked by the marking unit 3 can be obtained, and specifically, the first distance L between the top of the marked portion 43 of the unit to be marked 4 and the bottom of the unit to be marked 4 can be obtained. 1. For example, when the marking unit 3 is a solution, the first distance L1 corresponds to the depth of the marked unit 3 immersed in the solution. According to the first distance L1, the relative position information between the top of the marking unit 3 and the first surface A1 (this relative position information includes the distance between the top of the marking unit 3 and the first surface A1, for example, the third distance L3 between the liquid surface A3 of the solution and the first surface A1) and the relative position information between the bottom end of the unit to be marked 4 and the second surface A2 (this relative position information includes the fourth distance L4 between the bottom surface of the unit to be marked 4 and the second surface A2), the second distance L2 between the first surface A1 of the first structure 1 and the second surface A2 of the second structure 2 can be obtained, so that the relative position between the first surface A1 of the first structure 1 and the second surface A2 of the second structure 2 in actual use can be evaluated according to the second distance L2, providing a reliable evaluation basis for the assembly of the two. The method is relatively simple, the data obtained by detection is relatively accurate, and the practicability is strong.

[0067] like Figure 2 and Figure 4 As shown, optionally, the first structure 1 is installed on the first seat 5; in the above step S1, the first structure 1 of the setting device is straightened and the first surface A1 of the first structure 1 is set upward, including: adjusting the posture of the first seat 5 on which the first structure 1 is installed so that the first structure 1 is straightened.

[0068] That is to say, the position and posture of the first structure 1 is adjusted by adjusting the position and posture of the first seat 5 .

[0069] Optionally, a first positioning portion 21 is provided on the second structure 2, and a second positioning portion 51 is provided on the first seat 5; in the above step S4, positioning the second structure 2 according to a preset positioning method includes: adjusting the posture of the second structure 2 relative to the first seat 5 so that the second positioning portion 51 is positioned and connected to the first positioning portion 21; when the first positioning portion 21 is positioned and connected to the second positioning portion 51, the second structure 2 is supported on the second positioning portion 51 through the first positioning portion 21.

[0070] Specifically, the first seat 5 positions the first positioning portion 21 through the second positioning portion 51 provided thereon, thereby realizing the positioning and support of the second structure 2 by the first seat 5. In this way, the second structure 2 and the first structure 1 do not interfere with each other, and it is convenient to measure the distance between the first surface A1 and the second surface A2.

[0071] Further, when the first positioning portion 21 is positioned and connected with the second positioning portion 51 , the portion of the second structure 2 where the second surface A2 is located and the first structure 1 can be relatively movable in a direction perpendicular to the first surface A1 .

[0072] In some scenarios, at least a portion of the second structure 2, such as the portion where the second surface A2 is located, has the need to move relative to the first structure 1, and the relative positions of the two in a direction perpendicular to the first surface A1 need to meet corresponding requirements. It is necessary to measure the distance between the first surface A1 and the second surface A2 to evaluate whether the relative positions of the first structure 1 and the second structure 2 in a direction perpendicular to the first surface A1 meet the corresponding usage requirements.

[0073] Exemplarily, the first structure 1 includes a first sun gear 12, and the first surface A1 is formed on the upper end surface of the sun gear;

[0074] The second structure 2 includes a first planetary carrier 23, which is used to arrange a first planetary gear 24 meshing with the first sun gear 12, and the second surface A2 is formed on the first planetary carrier 23. The second structure 2 also includes a first bearing 25 arranged on the first planetary carrier 23; a first mounting hole for the first axis of the first sun gear 12 to pass through is provided on the first seat 5, and the first axis is passed through the first mounting hole and is connected to the first mounting hole through a second bearing; a second positioning portion 51 coaxial with the first mounting hole is also provided inside the first seat 5, and the first positioning portion 21 is formed on the first bearing 25, and the first bearing 25 is positioned and supported by the second positioning portion 51, so that the first planetary carrier 23 can rotate relative to the first sun gear 12, and the first planetary gear 24 is meshed with the first sun gear 12.

[0075] For example, the second positioning portion 51 may include a vertical cylindrical portion 511 and a first horizontal positioning surface 512. The vertical cylindrical portion 511 may extend into the inner hole of the inner ring of the first bearing 25. The first horizontal positioning surface 512 abuts against the end surface of the inner ring of the first bearing 25. The first planetary carrier 23 is connected to the upper end surface of the outer ring of the first bearing 25 and the outer circumferential surface of the outer ring. That is, the inner ring of the first bearing 25 constitutes the above-mentioned first positioning portion 21.

[0076] It should be understood that the first planetary gear 24 needs to mesh with the first sun gear 12 and maintain a wider meshing width, otherwise the stress condition of the teeth of the first planetary gear 24 and the first sun gear 12 may be deteriorated due to the meshing width being too narrow, resulting in the risk of tooth breakage. Therefore, the second surface A2 of the second structure 2 and the first surface A1 of the first structure 1 should have a design distance in a direction perpendicular to the first surface A1. The design distance enables the first planetary gear 24 and the first sun gear 12 to maintain a suitable meshing width. The second distance L2 can be measured by the method of the present application. By comparing the second distance L2 with the design distance, it can be evaluated whether the meshing width of the first planetary gear 24 and the first sun gear 12 is suitable, whether the assembly method of the second structure 2 needs to be adjusted, for example, whether the second positioning portion 51 needs to be repaired, the position of the first horizontal positioning surface 512 needs to be raised or lowered, etc.

[0077] In this embodiment, the first positioning portion 21 of the second structure 2 is positioned by the second positioning portion 51, which can simulate the assembly method of the second structure 2 during actual use, and measure the second distance L2 between the first surface A1 and the second surface A2 accordingly. The second distance L2 can be used to evaluate the relative positions of the first structure 1 and the second structure 2 when the setting device is in the assembled state.

[0078] Optionally, the setting device further comprises a wear-resistant plate; when the setting device is in the assembled state, the first structure 1 and the second structure 2 are arranged in the mounting cavity of the setting device, at least the portion of the second structure 2 where the second surface A2 is located and the first structure 1 can be relatively movably arranged in a direction perpendicular to the first surface A1, and the first structure 1 and the second structure 2 are provided with the wear-resistant plate at the first surface A1;

[0079] In the gap measurement method, when the wear-resistant plate is not provided between the first structure 1 and the second structure 2, the second structure 2 is positioned according to the preset positioning method.

[0080] Still taking the setting device as a reducer as an example, its shell structure includes a second seat and the above-mentioned first seat 5. When the reducer is in the assembled state, the first seat 5 and the second seat enclose the above-mentioned installation cavity, and the wear-resistant plate is arranged between the first structure 1 and the second structure 2, and the position of the wear-resistant plate corresponds to the position of the first surface A1.

[0081] In this embodiment, the content of the present invention is described by taking the lower end of the wear-resistant plate in contact with the first surface A1 and the upper end in contact with the second surface A2 as an example. In this case, if the thickness of the wear-resistant plate is relatively thick, it may cause the second structure 2 to move upward as a whole in the vertical direction, so that the meshing width of the first planetary gear 24 on the first planetary carrier 23 of the second structure 2 and the first sun gear 12 is reduced, affecting the transmission reliability between the first sun gear 12 and the first planetary gear 24. If the thickness of the wear-resistant plate is relatively thin, it may not play the role of the first sun gear 12 transmitting the axial force to the first planetary carrier 23 through the wear-resistant plate, so that the first bearing 25 will be subjected to a large axial force, which may affect the service life of the first bearing 25. Therefore, controlling the thickness of the wear-resistant plate is conducive to reducing the axial force borne by the first bearing 25 and ensuring the transmission possibility of the first sun gear 12 and the first planetary gear 24, which is conducive to ensuring the reliability of the reducer. Here, the wear-resistant plate can play the role of an axial distance component. In some scenarios, due to the loss of long-term use or the processing and assembly errors of other components, the axial distance component usually needs to be repaired.

[0082] The first distance L1 obtained by this method is at least used to evaluate the required thickness value of the wear-resistant plate. In other words, it is used to evaluate the axial dimension requirement of the axial spacing component. For example, based on the measurement of the first distance L1, considering the requirement of reducing the axial force borne by the first bearing 25, an appropriate value greater than the first distance L1 is used as the thickness setting value of the axial spacing component such as the wear-resistant plate. The setting of the thickness setting value can also take into account the wear of the wear-resistant plate after long-term use. The wear-resistant plate can be made of, for example, copper plate.

[0083] In this way, this method can obtain the first distance L1 which is difficult to obtain in the assembled state (the shell structure of the setting device makes it difficult to measure the first distance L1). The first distance L1 obtained by this method in the non-assembled state of the setting device can be evaluated by evaluating the required thickness value of the wear-resistant plate, and the wear-resistant plate obtained therefrom is useful for ensuring the reliability of the reducer.

[0084] In the above embodiment, optionally, the to-be-marked unit 4 and the marking unit 3 undergo a chemical reaction through contact to obtain the marked portion 43 .

[0085] That is, when the unit to be marked 4 contacts the marking unit 3 , the portion of the unit to be marked 4 close to the lower end is marked due to a chemical reaction with the marking unit 3 and obtains the marked portion 43 .

[0086] Furthermore, the color of the marked portion 43 is different from the color of the portion other than the marked portion 43 on the unit to be marked 4, so that the marked portion 43 can be easily identified.

[0087] In the above embodiment, optionally, the marking unit 3 includes a solution, and the solution is used to mark the portion of the unit to be marked 4 immersed in the solution to obtain the marked portion 43 .

[0088] Specifically, the color of the marked portion 43 is different from the color of the portion other than the marked portion 43 on the unit to be marked 4 .

[0089] The solution may be a chemical solution, which reacts with the marked unit 3 by a chemical method such as an oxidation reaction or a reduction reaction, so that the color of the marked unit 3 changes.

[0090] Exemplarily, the solution is a Bluesail solution, and at least the portion close to the lower end of the unit to be marked 4 is made of zinc material.

[0091] In the above embodiment, when the marking unit 3 includes a solution, Figure 3 As shown, the solution is contained in a first container 6 .

[0092] Specifically, the solution is contained in the first container 6, which facilitates the subsequent rapid cleaning of the solution and prevents the solution from directly contacting the first structure 1 and affecting the performance of the first structure 1. It should be understood that in other embodiments, the first surface A1 may be recessed downward to provide a containing groove for containing the solution. In this case, the first container 6 is not necessary, but the structural reliability of the first structure 1 may be affected, affecting its performance, such as the corrosion resistance of the first structure 1.

[0093] Optionally, the unit to be marked 4 includes a columnar structure 42, and the columnar structure 42 is used to form the marked portion 43;

[0094] After obtaining the second distance L2 according to the first distance L1, the relative position information between the top end of the marking unit 3 and the first surface A1, and the relative position information between the bottom end of the to-be-marked unit 4 and the second surface A2, the gap measurement method further includes:

[0095] generating a distance correction value according to the first distance L1, the cross-sectional area of ​​the columnar structure 42 and the bottom area of ​​the first container 6, wherein the distance correction value is used to characterize the height of the liquid level rise of the solution caused by the marked portion 43 being immersed in the solution;

[0096] The second distance L2 is corrected according to the distance correction value.

[0097] Specifically, in some cases, as the columnar structure 42 extends into the solution, the liquid level of the solution will rise to a certain extent, which will cause the second distance L2 obtained in step S6 to be smaller than the actual distance between the first surface A1 and the second surface A2.

[0098] The distance correction value may be the ratio of the volume of the portion of the unit to be marked 4 extending into the solution to the bottom area of ​​the solution. The second distance L2 obtained in step S6 and the distance correction value are added to obtain the corrected second distance L2.

[0099] In this way, the corrected second distance L2 is closer to the actual distance between the first surface A1 and the second surface A2, which can improve the accuracy of the data.

[0100] In the above embodiment, optionally, the first surface A1 is concave downward to form a first groove-shaped structure 11, and the first groove-shaped structure 11 is used to arrange the marking unit 3;

[0101] Before positioning the second structure 2 according to the preset positioning method, the gap measurement method further includes:

[0102] Obtaining the depth of the first groove-shaped structure 11;

[0103] Obtaining the distance between the liquid surface A3 of the solution and the outer bottom surface of the first container 6;

[0104] According to the depth of the first groove structure 11 and the distance between the liquid surface A3 of the solution and the outer bottom surface of the first container 6, the third distance L3 from the liquid surface A3 of the solution to the first surface A1 is obtained; the relative position information between the top of the marking unit 3 and the first surface A1 includes the third distance L3.

[0105] Specifically, the first container 6 is accommodated by the first groove-like structure 11, so that the first container 6 can accommodate a solution of sufficient depth for the marking unit 3 to extend. For example, in this case, the liquid level A3 of the solution in the first container 6 can be lower than the first surface A1, or higher than the first surface A1. When it is lower than the first surface A1, the bottom end of the marking unit 3 can be lower than the first surface A1, thereby preventing the marking unit 3 from being too short to extend into the liquid surface A3, thereby failing to obtain corresponding measurement data.

[0106] In the above embodiment, optionally, the first groove-shaped structure 11 is used to form at least a part of the flow channel of the first structure 1, and the flow channel is used for the passage of lubricating oil or refrigerant.

[0107] In this embodiment, a connecting channel is provided at the bottom of the first groove-shaped structure 11 , and the first groove-shaped structure 11 and the connecting channel together constitute a flow channel through which the lubricating oil flows.

[0108] In the above embodiment, optionally, the first container 6 has a liquid level scale, and the scale lines of the liquid level scale are used to indicate the distance between the corresponding scale lines and the outer bottom surface of the first container 6. Therefore, the distance between the liquid surface A3 and the outer bottom surface of the first container 6 can be obtained by reading the corresponding scale lines.

[0109] The depth of the first groove-shaped structure 11 can be measured by a corresponding measuring tool, such as a vernier caliper or other electronic height measuring instrument, which will not be described in detail here.

[0110] In the above embodiment, optionally, the second surface A2 is upwardly concave to form a second groove-shaped structure 22; the step of arranging the unit to be marked 4 at the second surface A2 of the second structure 2 of the setting device includes: arranging at least part of the unit to be marked 4 in the second groove-shaped structure 22;

[0111] Before positioning the second structure 2 according to the preset positioning method, the gap measurement method further includes:

[0112] Obtaining the depth of the second groove-shaped structure 22;

[0113] Obtaining the distance between the bottom end of the unit to be marked 4 and the bottom of the second groove-shaped structure 22;

[0114] The distance between the bottom end of the unit to be marked 4 and the second surface A2 is obtained according to the depth of the second groove-like structure 22 and the distance between the bottom end of the unit to be marked 4 and the bottom of the second groove-like structure 22; the relative position information between the bottom end of the unit to be marked 4 and the second surface A2 includes the distance between the bottom end of the unit to be marked 4 and the second surface A2.

[0115] In this way, the space formed by the second groove structure 22 can be used to accommodate the top part of the unit to be marked 4, and the top of the unit to be marked 4 can be fixed in the second groove structure 22, thereby avoiding directly fixing the top of the unit to be marked 4 within the limited height between the second surface A2 and the first surface A1.

[0116] Exemplarily, the unit to be marked 4 includes a fixed seat 41 and a columnar structure 42, the fixed seat 41 is connected to the second groove-shaped structure 22, for example, the top of the fixed seat 41 is bonded or magnetically connected to the bottom of the second groove-shaped structure 22 (the bottom of the groove is the inner top surface of the second groove-shaped structure 22), and the columnar structure 42 is connected to the fixed seat 41.

[0117] In some scenarios, the columnar structure 42 may include zinc wire, and the zinc wire may be embedded in the embedding groove of the fixing seat 41 to facilitate the replacement of the zinc wire for subsequent multiple uses.

[0118] It should be noted that in some scenarios, at least one of the first structure 1 and the second structure 2 can be provided with a receiving groove for accommodating or positioning the wear-resistant plate. In this case, the first surface A1 and the second surface A2 can usually be selected as the bottom surface of the receiving groove, but it should be understood that, when the depth of the receiving groove is known, the receiving groove can be used to form the above-mentioned first groove-like structure 11 or the second groove-like structure 22. At this time, the first surface A1 or the second surface A2 can also be selected as the end surface at the open mouth of the receiving groove, and finally the second distance L2 can be obtained, and the thickness of the wear-resistant plate can be determined according to the second distance L2 and the depth of the receiving groove, etc., which is not a limitation.

[0119] The measurement data of the gap measurement method of the present invention can be used in the subsequent assembly process of the setting device, providing a reliable data basis for the assembly of the setting device.

[0120] It should be understood that when the device is set as a reducer, it can also include a first gear ring 52, a second gear ring, a second planetary carrier, and a second planetary gear. The second planetary carrier can be connected to the output end. Of course, the first structure 1 and the second structure 2 are not limited to including the first sun gear 12 and the first planetary carrier 23 respectively. For example, they can also include the second sun gear and the second planetary carrier respectively. The structure of the reducer is not limited to this. The first sun gear 12 has an axial limit structure on the first seat 5, which will not be described in detail here.

[0121] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A gap measurement method, characterized in that: The gap measurement method comprises: Aligning the first structure (1) of the setting device so that the first surface (A1) of the first structure (1) faces upward; Arranging a marking unit (3) on the first surface (A1) of the first structure (1); Arranging a unit (4) to be marked on a second surface (A2) of the second structure (2) of the setting device; The second structure (2) is positioned in accordance with a preset positioning method, wherein when the second structure (2) is positioned in accordance with the preset positioning method, the second surface (A2) is arranged opposite to the first surface (A1), and the marking unit (3) marks the unit to be marked (4) by contacting the unit to be marked (4), wherein the second structure (2) is positioned in accordance with the preset positioning method when the second structure (2) is positioned in accordance with the preset positioning method; Obtaining a first distance (L1) between the top of a marked portion (43) of the unit to be marked (4) marked by the marking unit (3) and the bottom of the unit to be marked (4); A second distance (L2) is obtained according to the first distance (L1), the relative position information between the top end of the marking unit (3) and the first surface (A1), and the relative position information between the bottom end of the unit to be marked (4) and the second surface (A2), wherein the second distance (L2) is used to represent the distance between the first surface (A1) and the second surface (A2) when the second structure (2) is positioned according to the preset positioning method; The second structure (2) is provided with a first positioning portion (21); the first structure (1) is mounted on a first seat (5) of the setting device; and the first seat (5) is provided with a second positioning portion (51); The method of aligning the first structure (1) of the setting device and aligning the first surface (A1) of the first structure (1) upwards comprises: adjusting the posture of the first seat (5) on which the first structure (1) is mounted so that the first structure (1) is aligned; Positioning the second structure (2) in accordance with a preset positioning method comprises: adjusting the posture of the second structure (2) relative to the first seat (5) so that the second positioning portion (51) is positioned and connected with the first positioning portion (21); when the first positioning portion (21) is positioned and connected with the second positioning portion (51), the second structure (2) is supported on the second positioning portion (51) via the first positioning portion (21).

2. The gap measurement method according to claim 1, characterized in that: The setting device further comprises a wear-resistant plate; when the setting device is in the assembled state, the first structure (1) and the second structure (2) are arranged in the mounting cavity of the setting device, at least a portion of the second structure (2) where the second surface (A2) is located and the first structure (1) are arranged to move relative to each other in a direction perpendicular to the first surface (A1), and the first structure (1) and the second structure (2) are provided with the wear-resistant plate at the first surface (A1); In the gap measurement method, when the wear-resistant plate is not provided between the first structure (1) and the second structure (2), the second structure (2) is positioned according to the preset positioning method; The first distance (L1) is at least used to evaluate a required thickness value of the wear-resistant plate.

3. The gap measurement method according to any one of claims 1 to 2, characterized in that: The unit to be marked (4) and the marking unit (3) undergo a chemical reaction upon contact, thereby obtaining the marked portion (43); the color of the marked portion (43) is different from the color of the portion other than the marked portion (43) on the unit to be marked (4).

4. The gap measurement method according to any one of claims 1 to 2, characterized in that: The marking unit (3) comprises a solution, the solution being used to mark a portion of the unit to be marked (4) immersed in the solution, so as to obtain the marked portion (43); the color of the marked portion (43) is different from the color of portions of the unit to be marked (4) other than the marked portion (43).

5. The gap measurement method according to claim 4, characterized in that: The solution is contained in a first container (6).

6. The gap measurement method according to claim 5, characterized in that: The unit to be marked (4) comprises a columnar structure (42), and the columnar structure (42) is used to form the marked portion (43); After obtaining the second distance (L2) according to the first distance (L1), the relative position information between the top end of the marking unit (3) and the first surface (A1), and the relative position information between the bottom end of the unit to be marked (4) and the second surface (A2), the gap measurement method further comprises: generating a distance correction value according to the first distance (L1), the cross-sectional area of ​​the columnar structure (42) and the bottom area of ​​the first container (6), the distance correction value being used to characterize the height of the liquid level rise of the solution caused by the marked portion (43) being immersed in the solution; The second distance (L2) is corrected according to the distance correction value.

7. The gap measurement method according to claim 5, characterized in that: The first surface (A1) is concave downward to form a first groove-shaped structure (11), and the first groove-shaped structure (11) is used to arrange the marking unit (3); Before positioning the second structure (2) according to the preset positioning method, the gap measurement method further comprises: Obtaining the depth of the first groove-shaped structure (11); Obtaining the distance between the liquid surface (A3) of the solution and the outer bottom surface of the first container (6); A third distance (L3) from the liquid surface (A3) of the solution to the first surface (A1) is obtained based on the depth of the first groove-shaped structure (11) and the distance between the liquid surface (A3) of the solution and the outer bottom surface of the first container (6); the relative position information between the top of the marking unit (3) and the first surface (A1) includes the third distance (L3).

8. The gap measurement method according to claim 7, characterized in that: The first groove-shaped structure (11) is used to form at least a portion of a flow channel of the first structure (1), and the flow channel is used for the passage of lubricating oil or refrigerant; And / or, the first container (6) has a liquid level scale, and the scale lines of the liquid level scale are used to indicate the distance between the corresponding scale lines and the outer bottom surface of the first container (6).

9. The gap measurement method according to any one of claims 1 to 2, characterized in that: The second surface (A2) is concave upward to form a second groove-shaped structure (22); the step of arranging the unit to be marked (4) on the second surface (A2) of the second structure (2) of the setting device comprises: arranging at least part of the unit to be marked (4) in the second groove-shaped structure (22); Before positioning the second structure (2) according to a preset positioning method, the gap measurement method further comprises: Obtaining the depth of the second groove-shaped structure (22); Obtaining the distance between the bottom end of the unit to be marked (4) and the bottom of the second groove-shaped structure (22); The distance between the bottom end of the unit to be marked (4) and the second surface (A2) is obtained based on the depth of the second groove-like structure (22) and the distance between the bottom end of the unit to be marked (4) and the bottom of the second groove-like structure (22); the relative position information between the bottom end of the unit to be marked (4) and the second surface (A2) includes the distance between the bottom end of the unit to be marked (4) and the second surface (A2).

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