Speed reducer back clearance detection equipment

Abstract

The invention discloses speed reducer back clearance detection equipment, and relates to the technical field of speed reducer detection equipment, and the speed reducer back clearance detection equipment comprises a clamping device which is used for fixing a speed reducer and enabling an output shaft of the speed reducer to be perpendicular to a horizontal plane; the detection device comprises a guide rail, a dial indicator and a thrust meter, the guide rail is arranged on one side of the clamping device and extends linearly, the dial indicator and the thrust meter are oppositely and coaxially arranged, and the dial indicator and the thrust meter are in sliding connection with the guide rail so as to be close to or away from each other; one end of the supporting rod is used for connecting an output shaft of the speed reducer, and the other end of the supporting rod extends to the position between the dial indicator and the thrust meter in the direction away from the speed reducer; and the positioning structure is arranged on the clamping device and is used for positioning the speed reducer, so that the distance between the axis of the output shaft of the speed reducer and the axis of the thrust meter is configured to be a preset distance. According to the technical scheme provided by the invention, the speed reducer back clearance detection equipment which is simple and convenient to operate is provided.

Description

Technical Field

[0001] This invention relates to the field of speed reducer testing equipment, and in particular to a speed reducer backlash testing equipment. Background Technology

[0002] Backlash is a core performance parameter for measuring the transmission accuracy of a speed reducer. It is defined as the minute angular displacement value generated at the output end when a certain rotation is applied and the input end of the speed reducer is fixed. This parameter is quantified in arcminutes.

[0003] A gear reducer backlash testing device is provided, comprising a fixed part, a stop part, a connector, a dial indicator, a first weight, and a second weight. The fixed part secures the gear reducer housing, the stop part secures the gear reducer input shaft, and the middle part of the connector connects to the gear reducer output shaft. The connector is adjusted to be horizontal so that the dial indicator probe abuts against the connector, and the dial indicator reading A1 is recorded. The first weight is placed on the hook on the left side of the connector, and the dial indicator reading A2 is recorded. The rotation angle α of the connector is calculated using trigonometric functions. Then, the second weight is placed on the hook on the right side of the connector, and the dial indicator reading A3 is recorded. The rotation angle β of the connector is calculated using trigonometric functions. The backlash of the gear reducer is obtained by adding angle α and angle β.

[0004] However, this type of back gap detection equipment has the problem of complex operation during the detection process. Summary of the Invention

[0005] The main objective of this invention is to provide a gearbox backlash detection device, which is designed to be easy to operate.

[0006] To achieve the above objectives, the present invention provides a gearbox backlash detection device, comprising:

[0007] Clamping device for securing the speed reducer;

[0008] The testing device includes a guide rail, a dial indicator, and a force gauge. The guide rail is located on one side of the clamping device and extends in a straight line. The dial indicator and the force gauge are opposite to each other and coaxially arranged. The dial indicator and the force gauge are slidably connected to the guide rail so that they are close to or far from each other.

[0009] A support rod, one end of which is connected to the output shaft of the reducer, and the other end of which extends away from the reducer between the dial indicator and the thrust gauge; and

[0010] A positioning structure is provided on the clamping device for positioning the reducer so that the distance between the axis of the output shaft of the reducer and the axis of the thrust gauge is configured as a preset distance.

[0011] In one embodiment, the positioning structure includes a matching positioning hole and a positioning element. The clamping device is provided with a plurality of positioning holes, which are spaced apart along the length of the support rod. The positioning element is inserted into one of the positioning holes and abuts against the reducer, so that the distance between the axis of the output shaft of the reducer and the axis of the thrust gauge is configured as the preset distance.

[0012] In one embodiment, the clamping device includes:

[0013] The base plate, and the guide rail is fixed to the base plate;

[0014] A fixing plate, fixed to the base plate and perpendicular to the base plate, wherein the positioning holes are provided in the fixing plate; and

[0015] A clamping assembly is disposed on the base plate and has a preset distance from the fixing plate. The clamping assembly includes a movable clamping member, which is close to the fixing plate to clamp the reducer, or the clamping member is away from the fixing plate to release the reducer.

[0016] In one embodiment, the detection device further includes a positioning component for positioning the dial indicator at a preset position.

[0017] In one embodiment, the gearbox backlash detection device further includes a lifting device, which is driven to connect to the guide rail to adjust the height of the detection device.

[0018] In one embodiment, the lifting device includes:

[0019] A bracket assembly is located on one side of the guide rail;

[0020] A bracket assembly is slidably disposed on the support assembly along the height direction of the bracket assembly, and the guide rail is fixed to the bracket assembly; and

[0021] A locking component, provided on the bracket assembly, is used to lock the bracket assembly at a target height, or to release the bracket assembly to allow it to slide.

[0022] In one embodiment, the positioning component includes a first screw, and the bracket assembly has a groove parallel to the guide rail. One end of the first screw is inserted into the interior of the groove, and the other end is threadedly connected to the dial indicator. The first screw abuts against the bottom wall of the groove by its own rotation, so that the dial indicator is positioned at the preset position.

[0023] In one embodiment, the detection device further includes a drive assembly that drives the thrust gauge to move the thrust gauge closer to or away from the dial gauge.

[0024] In one embodiment, the driving component includes:

[0025] Fixed block;

[0026] A second screw, one end of which abuts against the side of the thrust gauge away from the dial indicator, and the other end of which is threadedly connected to the fixed block, the second screw, through its own rotation, drives the thrust gauge to move closer to the dial indicator or avoids the thrust gauge by moving it away from the dial indicator; and

[0027] An elastic element, elastically connecting the thrust gauge and the fixed block, is used to drive the thrust gauge to move away from the dial gauge.

[0028] In one embodiment, the gearbox backlash detection device further includes an anti-rotation component, which is disposed on the clamping device and is used to lock the input shaft of the gearbox to prevent the input shaft of the gearbox from rotating.

[0029] The backlash detection device of this invention includes a clamping device, a detection device, a support rod, and a positioning structure. The clamping device is used to fix the reducer, preventing displacement or shaking of the reducer due to external forces (such as the thrust of a dial indicator or a thrust gauge) during the detection process, ensuring the stability of the reducer and improving the backlash detection accuracy. The detection device includes a guide rail, a dial indicator, and a thrust gauge. The guide rail is located on one side of the clamping device and extends in a straight line, providing a sliding track for the dial indicator and the thrust gauge. The dial indicator and the thrust gauge are opposite to each other and coaxially arranged, that is, the axis of the measuring end of the dial indicator coincides with the axis of the force-applying end of the thrust gauge, ensuring that the forces exerted by the dial indicator and the thrust gauge on the support rod are opposite in direction and collinear, guaranteeing the accuracy of the backlash detection. One end of the support rod is connected to the output shaft, ensuring that the support rod and the output shaft rotate synchronously without relative displacement. The other end of the support rod extends between the dial indicator and the thrust gauge, allowing the thrust of the dial indicator or the thrust gauge to be transmitted to the output shaft through the support rod, forcing the output shaft to rotate. The positioning structure is a spatial positioning reference set on the clamping device, constraining the installation position of the reducer. When the reducer is fixed in the clamping device, the reducer's housing fits or aligns with the positioning structure, ensuring that after the reducer is fixed by the clamping device, the distance between the axis of the output shaft and the axis of the thrust gauge is equal to the preset gap, thus ensuring that the distance from the output shaft axis to the force application point of the thrust gauge is a preset fixed value. By pushing the support rod from both sides with a dial indicator and a thrust gauge, the output shaft is rotated to two extreme positions. The angle between the two extreme positions is the backlash of the reducer, realizing the backlash detection function. The detection steps are simple and easy to operate. The dial indicator is responsible for obtaining the rotation arc length data, and the thrust gauge is responsible for controlling the magnitude of the applied force and ensuring that the applied force is uniform and stable. The structure is simple, without complex electrical control or precision sensing components, making it easy to manufacture and maintain. By setting up the positioning structure to position the reducer, the rotation radius of the force application point of the thrust gauge relative to the support rod is a preset fixed value, eliminating the need to measure the rotation radius of the force application point of the thrust gauge every time, reducing operation steps and improving detection efficiency. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 A schematic diagram of an embodiment of the gearbox backlash detection device provided by the present invention. Figure 1 ;

[0032] Figure 2 A schematic diagram of an embodiment of the gearbox backlash detection device provided by the present invention. Figure 2 ;

[0033] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0034] Figure 4 for Figure 2 A magnified view of a section at point B in the middle;

[0035] Figure 5 A schematic diagram of an embodiment of the gearbox backlash detection device provided by the present invention. Figure 3 ;

[0036] Figure 6 A schematic diagram of an embodiment of the gearbox backlash detection device provided by the present invention. Figure 4 ;

[0037] Figure 7 A simplified diagram illustrating the detection principle of the gearbox backlash detection device provided by this invention.

[0038] Explanation of icon numbers:

[0039] 10. Reducer; 11. Output shaft; 12. Input shaft;

[0040] 100. Clamping device; 110. Base plate; 120. Fixing plate; 121. Positioning hole; 130. Clamping assembly; 131. Clamping element;

[0041] 210. Guide rail; 220. Dial indicator; 230. Thrust gauge; 240. Positioning assembly; 241. First screw; 250. Drive assembly; 251. Fixing block; 252. Second screw; 253. Elastic element;

[0042] 300, support rod;

[0043] 400. Lifting device; 410. Bracket assembly; 420. Bracket assembly; 421. Slide groove; 422. Guide rod; 430. Locking assembly; 431. First clamping block; 432. Set screw;

[0044] 500. Anti-rotation component; 510. Mounting bracket; 520. Second clamping block; 530. Locking bolt;

[0045] 600. Positioning structure; 610. Positioning component.

[0046] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0048] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, or a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0051] This invention proposes a gearbox backlash detection device.

[0052] Please see Figures 1 to 2 , Figure 1 A schematic diagram of an embodiment of the gearbox backlash detection device provided by the present invention. Figure 1 , Figure 2 A schematic diagram of an embodiment of the gearbox backlash detection device provided by the present invention. Figure 2 .

[0053] In one embodiment of the present invention, the gearbox backlash detection device includes:

[0054] The clamping device 100 is used to fix the reducer 10 and make the output shaft 11 of the reducer 10 perpendicular to the horizontal plane;

[0055] The testing device includes a guide rail 210, a dial indicator 220, and a force gauge 230. The guide rail 210 is located on one side of the clamping device 100 and extends in a straight line. The dial indicator 220 and the force gauge 230 are opposite to each other and coaxially arranged. The dial indicator 220 and the force gauge 230 are slidably connected to the guide rail 210 so that they are close to or far from each other.

[0056] Support rod 300, one end of which is used to connect to the output shaft 11 of the reducer 10, and the other end of which extends away from the reducer 10 to between dial indicator 220 and thrust gauge 230; and

[0057] The positioning structure 600 is provided on the clamping device 100 and is used to position the reducer 10 so that the distance between the axis of the output shaft 11 of the reducer 10 and the axis of the thrust gauge 230 is configured as a preset distance.

[0058] The backlash detection device of the present invention includes a clamping device 100, a detection device, a support rod 300, and a positioning structure 600. The clamping device 100 is used to fix the reducer 10, preventing displacement or shaking of the reducer 10 due to external forces (such as the thrust of the dial indicator 220 and the thrust gauge 230) during the detection process, ensuring the stability of the reducer 10 during the detection process and improving the backlash detection accuracy. The detection device includes a guide rail 210, a dial indicator 220, and a thrust gauge 230. The guide rail 210 is located on one side of the clamping device 100 and extends in a straight line, providing a sliding track for the dial indicator 220 and the thrust gauge 230. The dial indicator 220 and the thrust gauge 230 are opposite to each other and coaxially arranged, that is, the axis of the measuring end of the dial indicator 220 coincides with the axis of the force-applying end of the thrust gauge 230, ensuring that the forces exerted by the dial indicator 220 and the thrust gauge 230 on the support rod 300 are opposite in direction and collinear, thus guaranteeing the accuracy of the backlash detection. One end of the support rod 300 is connected to the output shaft 11, ensuring that the support rod 300 and the output shaft 11 rotate synchronously without relative displacement. The other end of the support rod 300 extends between the dial indicator 220 and the thrust gauge 230, allowing the thrust of the dial indicator 220 or the thrust gauge 230 to be transmitted to the output shaft 11 through the support rod 300, forcing the output shaft 11 to rotate. The positioning structure 600 is a spatial positioning reference set on the clamping device 100, constraining the installation position of the reducer 10. When the reducer 10 is fixed in the clamping device 100, the housing of the reducer 10 is in contact with or aligned with the positioning structure 600, ensuring that after the reducer 10 is fixed by the clamping device 100, the distance between the axis of the output shaft 11 and the axis of the thrust gauge 230 is equal to the preset distance, which also makes the distance from the axis of the output shaft 11 to the force application point of the thrust gauge 230 a preset fixed value. The output shaft 11 is rotated to two extreme positions by pushing the support rod 300 from both sides using a dial indicator 220 and a thrust gauge 230. The angle between the two extreme positions is the backlash of the reducer 10, thus realizing the backlash detection function. The detection procedure is simple and easy to operate. The dial indicator 220 is responsible for obtaining the rotation arc length data, and the thrust gauge 230 is responsible for controlling the magnitude of the applied force and ensuring that the applied force is uniform and stable. The structure is simple, without complex electrical control or precision sensing components, making it easy to manufacture and maintain. By setting a positioning structure 600 to position the reducer 10, the rotation radius of the force application point of the thrust gauge 230 on the support rod 300 is a preset fixed value. It is not necessary to measure the rotation radius of the force application point of the thrust gauge 230 every time, reducing operation steps and improving detection efficiency.

[0059] Combination Figure 1 , Figure 2 as well as Figure 7 , Figure 7 Point O indicates the center of the output shaft 11 of the reducer 10. Specific testing steps include:

[0060] The positioning structure 600 is used to position the reducer 10, so that the distance between the axis of the output shaft 11 and the axis of the thrust gauge 230 is configured to a preset distance, that is, to make Figure 1 and Figure 7 L1 is a preset fixed value;

[0061] The reducer 10 is fixed using the clamping device 100;

[0062] The input shaft 12 of the fixed reducer 10;

[0063] One end of the connecting rod 300 is connected to the output shaft 11 of the reducer 10, so that the other end of the connecting rod 300 is located between the dial indicator 220 and the thrust gauge 230, such as Figure 7 As shown by the middle line segment OA;

[0064] The dial indicator 220 moves along the guide rail 210 towards the thrust gauge 230. The measuring end of the dial indicator 220 contacts the support rod 300 and continuously applies thrust until the support rod 300 can no longer rotate. At this point, the output shaft 11 is pushed to a limit position due to the internal clearance of the reducer 10. This position is the first position of the support rod 300. Figure 7 As shown in the middle segment OB;

[0065] Fix dial indicator 220 and zero the dial indicator 220 reading;

[0066] The thrust gauge 230 moves along the guide rail 210 towards the dial gauge 220. The force-applying end of the thrust gauge 230 contacts the support rod 300 and applies a preset thrust until the support rod 300 can no longer rotate. At this point, the output shaft 11 is pushed in the opposite direction to another extreme position, which is the second position of the support rod 300. Figure 7 As shown in the middle segment OC, since the support rod 300 rotates synchronously with the output shaft 11, the rotation angle of the support rod 300 between the second position and the first position is the rotation angle of the output shaft 11, which is also the backlash of the reducer 10.

[0067] Obtain the reading of dial indicator 220. The reading of dial indicator 220 represents the straight-line distance of the force application point of the thrust gauge 230 on the support rod 300 from the second position to the first position. Figure 7 As shown in the figure, since the backlash of the reducer 10 is generally quantified in arc minutes and is very small, this straight distance can be approximated as the rotation arc length of the force application point of the thrust table 230.

[0068] The rotation radius of the force application point of the thrust gauge 230 is determined according to the preset spacing. Although the force application point of the thrust gauge 230 on the support rod 300 will move slightly during the rotation of the support rod 300, and the rotation radius of the force application point of the thrust gauge 230 is actually slightly larger than the distance between the axis of the output shaft 11 and the axis of the thrust gauge 230, it is still very small in magnitude. Therefore, L1 can be approximated as the rotation radius of the force application point of the thrust gauge 230, which means that the rotation radius of the force application point of the thrust gauge 230 is equal to the preset spacing.

[0069] The rotation angle of the support rod 300 is calculated based on the rotation arc length and rotation radius, thus obtaining the backlash of the reducer 10. The calculation formula is as follows:

[0070]

[0071] For example, if the preset spacing L1 is configured as 120mm, and L2 is measured to be 0.035mm, the back clearance is calculated to be 1 arc minute. After setting up a positioning structure 600 to position the reducer 10, the entire detection process only requires measuring the value of L2, which simplifies the operation and improves the efficiency of back clearance detection.

[0072] In one embodiment, after the clamping device 100 fixes the reducer 10, the output shaft 11 of the reducer 10 is perpendicular to the horizontal plane, that is, the output shaft 11 extends vertically, which reduces the interference of gravity on the rotation of the output shaft 11, ensures that the output shaft 11 is only affected by the thrust of the detection device during the backlash detection process, and improves the backlash detection accuracy.

[0073] In one embodiment, the positioning structure 600 includes a cooperating positioning hole 121 and a positioning member 610. The clamping device 100 is provided with a plurality of positioning holes 121, which are spaced apart along the length of the support rod 300. The positioning member 610 is inserted into one of the positioning holes 121 and abuts against the reducer 10, so that the distance between the axis of the output shaft 11 of the reducer 10 and the axis of the thrust gauge 230 is configured as a preset distance.

[0074] Combination Figure 1 , Figure 2 and Figure 6In an embodiment of the present invention, the positioning structure 600 includes a cooperating positioning element 610 and positioning holes 121. Positioning holes 121 are formed in the clamping device 100, and multiple holes are provided and spaced apart along the length of the support rod 300. Different positioning holes 121 are set according to different sizes of reducers 10. The positioning element 610 is pluggably assembled into the positioning hole 121, and the exposed part of the positioning element 610 directly abuts against the housing of the reducer 10. The reducer 10 is positioned through contact, ensuring that after different sizes of reducers 10 are positioned by the positioning structure 600, the distance between the axis of the output shaft 11 and the axis of the thrust gauge 230 is a fixed value. Even when testing reducers of different sizes, it is not necessary to measure the rotation radius of the force application point of the thrust gauge 230 each time. The cooperation between the positioning hole 121 and the positioning element 610 is simple in structure, easy to manufacture, and convenient for positioning operations when changing different reducers 10. By setting multiple positioning holes 121, the versatility of the reducer backlash detection equipment is improved. The positioning hole 121 can be set on the base plate 110 of the clamping device 100 or on the fixing plate 120.

[0075] In one embodiment, the clamping device 100 includes:

[0076] Base plate 110, guide rail 210 is fixed to base plate 110;

[0077] A fixing plate 120 is fixed to the base plate 110 and perpendicular to the base plate 110; positioning holes 121 are provided in the fixing plate 120; and

[0078] The clamping assembly 130 is disposed on the base plate 110 and has a preset distance from the fixing plate 120. The clamping assembly 130 includes a movable clamping member 131. The clamping member 131 is close to the fixing plate 120 to clamp the reducer 10, or the clamping member 131 is away from the fixing plate 120 to release the reducer 10.

[0079] Reference Figure 1 and Figure 2In an embodiment of the present invention, the clamping device 100 includes a base plate 110, a fixing plate 120, and a clamping assembly 130. The base plate 110 serves as the basic support for the entire clamping device 100 and the guide rail 210, enabling the clamping device 100 and the detection device to form a unified installation reference and ensuring the relative position stability of each component. The fixing plate 120 is vertically fixed on the base plate 110. The clamping assembly 130 is disposed on the base plate 110, maintaining a preset distance from the fixing plate 120, and has a movable clamping member 131. The clamping member 131 can move in a direction close to or away from the fixing plate 120, and achieves clamping or releasing of the reducer 10 through cooperation with the fixing plate 120. Specifically, when clamping the reducer 10, the reducer 10 is placed on the base plate 110, with one side of the reducer 10 pressed against the fixing plate 120. Then, the clamping member 131 is driven to move towards the fixing plate 120 until the clamping member 131 is in close contact with the other side of the reducer 10. The clamping force between the fixing plate 120 and the clamping member 131 fixes the reducer 10, preventing displacement of the reducer 10 during testing. When releasing the reducer 10, the clamping member 131 is driven to move away from the fixing plate 120, releasing the clamping force on the reducer 10, allowing the reducer 10 to be removed from the base plate 110. The fixing plate 120 is perpendicular to and rigidly connected to the base plate 110, providing a stable positioning reference for one side of the reducer 10. Combined with the clamping force of the clamping assembly 130 on the other side, this improves the stability of the reducer 10, preventing it from shaking or shifting during testing and improving the accuracy of backlash detection. The clamping member 131 of the clamping assembly 130 is movable, which can be used for different specifications of reducers 10 with small differences in width and size, thus improving the versatility of the backlash detection equipment.

[0080] Specifically, in this embodiment, refer to Figure 6 The positioning hole 121 is set on the fixed plate 120. One end of the positioning member 610 is provided with a handle, and the other end can pass through the positioning hole 121 and extend to the side of the fixed plate 120 facing the reducer 10, so as to facilitate contact with the reducer 10. The structure is simple and the operation is convenient.

[0081] In one embodiment, the clamp assembly 130 is slidably disposed on the base plate 110 to move closer to or further away from the fixed plate 120 to adjust the size of the preset interval.

[0082] Reference Figure 2In this embodiment of the invention, the clamp assembly 130 is slidably connected to the base plate 110, with the sliding direction along a straight line approaching or away from the fixed plate 120. By sliding the clamp assembly 130 along the base plate 110, the distance between the clamp assembly 130 and the fixed plate 120 can be changed, i.e., a preset interval, to accommodate reducers 10 of different widths. With the clamp assembly 130 fixed, the preset interval can only accommodate reducers 10 with small width differences, while the sliding clamp assembly 130 can cover a wider range of reducers 10 sizes, further improving the equipment's versatility and adaptability. The sliding adjustment method is simple and convenient, easy to operate, and has low manufacturing difficulty. After the clamp assembly 130 slides into place, it is locked by bolts or clips to secure the clamp assembly 130 and ensure the firmness of clamping the reducer 10.

[0083] In one embodiment, the detection device further includes a positioning component 240 for positioning the dial indicator 220 at a preset position.

[0084] Reference Figure 1 In an embodiment of the present invention, the detection device further includes a positioning component 240. When the dial indicator 220 moves towards the thrust gauge 230, causing the support rod 300 to drive the output shaft 11 of the reducer 10 to rotate to the limit position where it can no longer move, that is, when the support rod 300 is pushed to the first position by the dial indicator 220, the positioning component 240 locks the position of the dial indicator 220 on the guide rail 210. At this time, the position of the dial indicator 220 is the preset position, ensuring that the dial indicator 220 does not undergo any displacement during the subsequent pushing of the support rod 300 by the thrust gauge 230. By setting the positioning component 240, the dial indicator 220 does not need to be manually held to maintain its position, avoiding slight slippage of the dial indicator 220 under the influence of the force when the thrust gauge 230 pushes the support rod 300, thereby ensuring the accuracy of the measurement data of the dial indicator 220 and improving the accuracy of backlash detection. The positioning component 240 can be fixed to the dial indicator 220 by means of bolts or buckles.

[0085] In one embodiment, the gearbox backlash detection device further includes a lifting device 400, which drives the connecting guide rail 210 to adjust the height of the detection device.

[0086] Reference Figure 2In an embodiment of the present invention, the reducer backlash detection device further includes a lifting device 400. The lifting device 400 drives the connecting guide rail 210, causing the entire guide rail 210 and the dial indicator 220 and thrust gauge 230 mounted on the guide rail 210 to rise and fall synchronously, so that the measuring end of the dial indicator 220 and the force-applying end of the thrust gauge 230 are at the same horizontal height as the support rod 300, ensuring accurate force transmission direction. Different models of reducers 10 have different output shaft 11 heights, resulting in inconsistent heights of the support rod 300 connected to the output shaft 11. The lifting device 400 can adjust the height of the guide rail 210 to ensure that the axes of the dial indicator 220 and thrust gauge 230 are always aligned with the support rod 300, thereby adapting the reducer backlash detection device to reducers 10 of different sizes and specifications, improving the device's versatility. The lifting device 400 can achieve the lifting of the detection device using a slider and slide rail, a screw and nut mechanism, or a linear motor.

[0087] In one embodiment, the lifting device 400 includes:

[0088] The bracket assembly 410 is located on one side of the guide rail 210;

[0089] The bracket assembly 420 is slidably disposed on the bracket assembly 410 along the height direction of the bracket assembly 410, and the guide rail 210 is fixed to the bracket assembly 420; and

[0090] A locking assembly 430, provided on the bracket assembly 410, is used to lock the bracket assembly 420 at a target height, or to release the bracket assembly 420 so that the bracket assembly 420 can slide.

[0091] Reference Figure 2 and Figure 6In an embodiment of the present invention, the lifting device 400 includes a support assembly 410, a bracket assembly 420, and a locking assembly 430. The support assembly 410 serves as the basic support for the entire lifting device 400. The bracket assembly 420 is slidably mounted on the support assembly 410 along the height direction of the support assembly 410. The guide rail 210 is fixed on the bracket assembly 420. By sliding the bracket assembly 420 along the support assembly 410, the guide rail 210, the dial indicator 220, and the thrust gauge 230 are driven to rise and fall synchronously, thereby realizing the height adjustment of the dial indicator 220 and the thrust gauge 230. The locking assembly 430 is mounted on the bracket assembly 410. When height adjustment is required, the locking assembly 430 releases its constraint on the bracket assembly 420, allowing the bracket assembly 420 to slide freely along the height direction of the bracket assembly 410 to adjust the height of the detection device. When the height of the detection device needs to be fixed, the locking assembly 430 rigidly locks the bracket assembly 420 to the bracket assembly 410 through clamping or bolting, preventing the bracket assembly 420 from sliding and ensuring that the dial indicator 220 and the thrust gauge 230 are stable at the target height. The bracket assembly 410, bracket assembly 420, and locking assembly 430 are all mechanical structures without precision electronic components, resulting in a simple structure and low manufacturing cost.

[0092] Specifically, in this embodiment, refer to Figure 4 The locking assembly 430 includes a first clamping block 431 and a set screw 432. The first clamping block 431 is disposed on the bracket assembly 410 and has a guide groove. The bracket assembly 420 has a vertically extending guide rod 422, which passes through the guide groove. When the bracket assembly 420 moves up and down, the guide rod 422 slides up and down within the guide groove. One end of the set screw 432 passes through the side wall of the guide groove and abuts against the guide rod 422. The set screw 432 is threadedly connected to the side wall of the guide groove. By tightening the set screw 432, the end of the set screw 432 extending into the guide groove clamps the guide rod 422 against the inner wall of the guide groove, thereby locking and positioning the bracket assembly 420. The entire locking assembly 430 has a simple structure, is easy to manufacture, and is convenient for locking and unlocking operations.

[0093] In one embodiment, the positioning component 240 includes a first screw 241, and the bracket component 420 is provided with a slide groove 421 parallel to the guide rail 210. One end of the first screw 241 is inserted into the interior of the slide groove 421, and the other end is threadedly connected to the dial indicator 220. The first screw 241 abuts against the bottom wall of the slide groove 421 by its own rotation, so that the dial indicator 220 is positioned at a preset position.

[0094] Combination Figure 2 and Figure 5In an embodiment of the present invention, the positioning component 240 includes a first screw 241. One end of the first screw 241 is inserted into the groove 421 of the bracket assembly 420, and the other end is threadedly connected to the dial indicator 220. When the dial indicator 220 slides along the guide rail 210 to a preset position (i.e., the support rod 300 is pushed to the first position), the first screw 241 is rotated, and the screw drive pushes the first screw 241 into the groove 421 until the end of the first screw 241 tightly abuts against the bottom wall of the groove 421. At this time, the static friction between the first screw 241 and the bottom wall of the groove 421 locks the dial indicator 220 to the bracket assembly 420, preventing the dial indicator 220 from sliding along the guide rail 210, thereby fixing the dial indicator 220 in the preset position. The locking and releasing can be switched by rotating the first screw 241. The operation is simple, the processing difficulty is low, and the manufacturing cost is low. In addition, the threaded connection between the first screw 241 and the dial indicator 220 has self-locking property, which provides good positioning effect for the dial indicator 220.

[0095] In one embodiment, the detection device further includes a drive assembly 250 that drives a connected thrust gauge 230 to move the thrust gauge 230 closer to or further away from the dial gauge 220.

[0096] Reference Figure 1 In an embodiment of the present invention, the detection device further includes a drive assembly 250, which drives a thrust gauge 230. When it is necessary to push the support rod 300 from the first position to the second position, the drive assembly 250 is activated, driving the thrust gauge 230 to move along the guide rail 210 toward the dial indicator 220 until the thrust end of the thrust gauge 230 contacts the support rod 300 and continues to apply force, pushing the support rod 300 to the second position. After the detection is completed, the drive assembly 250 reverses its direction, causing the thrust gauge 230 to move away from the dial indicator 220 along the guide rail 210, leaving operating space for the next detection. The drive assembly 250 can be implemented using a linear motor or a lead screw, etc. By setting the drive assembly 250, the stability of the movement of the thrust gauge 230 is improved, and the convenience of operating the drive assembly 250 is also improved.

[0097] In one embodiment, the drive component 250 includes:

[0098] Fixed block 251;

[0099] The second screw 252 has one end abutting against the side of the thrust gauge 230 away from the dial gauge 220, and the other end threadedly connected to the fixing block 251. The second screw 252, through its own rotation, drives the thrust gauge 230 to move closer to the dial gauge 220 or to move away from the dial gauge 220.

[0100] The elastic element 253 elastically connects the thrust gauge 230 and the fixed block 251, and is used to drive the thrust gauge 230 to move away from the dial gauge 220.

[0101] Reference Figure 1 In an embodiment of the present invention, the drive assembly 250 includes a fixing block 251, a second screw 252, and an elastic element 253. The fixing block 251 is fixed to the guide rail 210 or the bracket assembly 420. One end of the second screw 252 abuts against the side of the thrust gauge 230 away from the dial indicator 220, transmitting thrust through end-face contact. The other end forms a threaded connection with the fixing block 251. The elastic element 253 elastically connects the thrust gauge 230 and the fixing block 251. In use, rotating the second screw 252 causes it to move axially toward the thrust gauge 230 due to the threaded engagement between the second screw 252 and the fixing block 251. The end of the second screw 252 pushes the thrust gauge 230 to slide along the guide rail 210 toward the dial indicator 220 until the thrust gauge 230 contacts the support rod 300 and pushes it to the second position. During this process, the elastic element 253 is deformed, storing elastic potential energy. The second screw 252 is rotated in the reverse direction, moving axially away from the pressure gauge 230. At this time, the elastic element 253 releases potential energy, causing the pressure gauge 230 to move along the guide rail 210 away from the dial indicator 220, thus resetting the pressure gauge 230. The axial movement distance of the second screw 252 is fixed for each rotation angle, allowing precise control of the pressure gauge 230's advance distance, reducing excessive pushing due to excessive force, and lowering the risk of damage to the pressure gauge 230 and the reducer 10. When the second screw 252 moves circumferentially away from the dial indicator 220, the elastic element 253 automatically pulls the pressure gauge 230 back to its initial position, eliminating the need for manual reset and reducing operational steps.

[0102] In one embodiment, the gearbox backlash detection device further includes an anti-rotation component 500, which is disposed on the clamping device 100 and is used to lock the input shaft 12 of the gearbox 10 to prevent the input shaft 12 of the gearbox 10 from rotating.

[0103] Reference Figure 2 In an embodiment of the present invention, the reducer backlash detection device is further provided with an anti-rotation component 500. The anti-rotation component 500 can lock the input shaft 12 of the reducer 10 by means of mechanical clamping, pin positioning, or friction constraint, preventing the input shaft 12 from rotating during the detection process. The anti-rotation component 500 can be applied to reducers 10 that do not have an input shaft 12 self-locking function to lock the input shaft 12; it can also be applied to reducers 10 that have an input shaft 12 self-locking function to further ensure that the input shaft 12 remains stationary. By setting the anti-rotation component 500 to lock the input shaft 12, the input shaft 12 is forced to remain stationary, ensuring that the rotation angle of the output shaft 11 is determined only by the internal clearance, thereby ensuring the accuracy of the backlash detection results.

[0104] Specifically, in this embodiment, refer to Figure 3 The anti-rotation component 500 includes a mounting bracket 510, a second clamping block 520, and a locking bolt 530. The mounting bracket 510 is fixed on the base plate 110. The second clamping block 520 is located on one side of the mounting bracket 510 and has a clamping groove. The clamping groove is used to clamp the input shaft 12 of the reducer 10. The locking bolt 530 passes through the two opposite side walls of the clamping groove and is threadedly connected to the mounting bracket 510. By tightening the locking bolt 530, the head of the locking bolt 530 will press against the two opposite side walls of the clamping groove in the middle of the mounting bracket 510, so that the two opposite side walls of the clamping groove tightly clamp the input shaft 12 of the reducer 10, increasing the static friction between the second clamping block 520 and the input shaft 12, thereby preventing the input shaft 12 of the reducer 10 from rotating. The structure is simple, easy to manufacture, and low in cost.

[0105] In general, in the embodiments of the present invention, reference is made to Figure 2 and Figure 6 By setting multiple positioning holes 121 on the fixed plate 120 to cooperate with the positioning component 610, the axis of the output shaft 11 of the reducer 10 of different specifications is made to be the same as the axis of the thrust gauge 230; by sliding the clamp assembly 130 to the base plate 110, it can accommodate the thickness of the reducer 10 of different specifications; by setting the lifting device 400 to align the thrust gauge 230 and the dial indicator 220 with the support rod 300, it can accommodate the height of the output shaft 11 of the reducer 10 of different specifications. Through the combined effect of the above three aspects, the reducer backlash detection equipment can be conveniently applied to reducers 10 of different sizes.

[0106] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformations made based on the technical concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A gearbox backlash detection device, characterized in that, include: Clamping device for securing the speed reducer; The testing device includes a guide rail, a dial indicator, and a force gauge. The guide rail is located on one side of the clamping device and extends in a straight line. The dial indicator and the force gauge are opposite to each other and coaxially arranged. The dial indicator and the force gauge are slidably connected to the guide rail so that they are close to or far from each other. A support rod, one end of which is used to connect to the output shaft of the reducer, and the other end of which extends away from the reducer to between the dial indicator and the thrust gauge; as well as A positioning structure is provided on the clamping device for positioning the reducer so that the distance between the axis of the output shaft of the reducer and the axis of the thrust gauge is configured as a preset distance.

2. The gearbox backlash detection device as described in claim 1, characterized in that, The positioning structure includes matching positioning holes and positioning elements. The clamping device is provided with a plurality of positioning holes, which are spaced apart along the length of the support rod. The positioning element is inserted into one of the positioning holes and abuts against the reducer, so that the distance between the axis of the output shaft of the reducer and the axis of the thrust gauge is configured as the preset distance.

3. The gearbox backlash detection device as described in claim 2, characterized in that, The clamping device includes: The base plate, and the guide rail is fixed to the base plate; A fixing plate, fixed to the base plate and perpendicular to the base plate, wherein the positioning holes are provided in the fixing plate; and A clamping assembly is disposed on the base plate and has a preset distance from the fixing plate. The clamping assembly includes a movable clamping member, which is close to the fixing plate to clamp the reducer, or the clamping member is away from the fixing plate to release the reducer.

4. The gearbox backlash detection device as described in claim 1, characterized in that, The detection device further includes a positioning component, which is used to position the dial indicator at a preset position.

5. The gearbox backlash detection device as described in claim 4, characterized in that, The gearbox backlash detection equipment also includes a lifting device, which is driven and connected to the guide rail to adjust the height of the detection device.

6. The gearbox backlash detection device as described in claim 5, characterized in that, The lifting device includes: A bracket assembly is located on one side of the guide rail; A bracket assembly is slidably disposed on the support assembly along the height direction of the bracket assembly, and the guide rail is fixed to the bracket assembly; and A locking component, provided on the bracket assembly, is used to lock the bracket assembly at a target height, or to release the bracket assembly to allow it to slide.

7. The gearbox backlash detection device as described in claim 6, characterized in that, The positioning component includes a first screw, and the bracket assembly has a slide groove parallel to the guide rail. One end of the first screw is inserted into the interior of the slide groove, and the other end is threadedly connected to the dial indicator. The first screw abuts against the bottom wall of the slide groove by its own rotation, so that the dial indicator is positioned at the preset position.

8. The gearbox backlash detection device as described in claim 1, characterized in that, The detection device further includes a drive component that drives the thrust gauge to move the thrust gauge closer to or further away from the dial gauge.

9. The gearbox backlash detection device as described in claim 8, characterized in that, The driving component includes: Fixed block; A second screw, one end of which abuts against the side of the thrust gauge away from the dial indicator, and the other end of which is threadedly connected to the fixed block, the second screw, through its own rotation, drives the thrust gauge to move closer to the dial indicator or avoids the thrust gauge by moving it away from the dial indicator; and An elastic element, elastically connecting the thrust gauge and the fixed block, is used to drive the thrust gauge to move away from the dial gauge.

10. The gearbox backlash detection device as described in claim 1, characterized in that, The gearbox backlash detection device also includes an anti-rotation component, which is located on the clamping device and is used to lock the input shaft of the gearbox to prevent the input shaft of the gearbox from rotating.

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