Backlash detection device for a speed reducer

Abstract

This utility model discloses a gearbox backlash detection device, relating to the technical field of gearbox testing equipment. The gearbox backlash detection device includes: a clamping device for fixing the gearbox; a testing device including a guide rail, a dial indicator, and a push-pull force gauge, the guide rail being located on one side of the clamping device and extending in a straight line, the dial indicator and the push-pull force gauge being opposite each other and coaxially arranged, and the dial indicator and the push-pull force gauge being slidably connected to the guide rail to move closer to or further away from each other; a support rod having a first end and a second end opposite to each other, the first end being used to connect to the output shaft of the gearbox, and the second end extending away from the gearbox to between the dial indicator and the push-pull force gauge; and a movable connecting assembly located at the force-applying end of the push-pull force gauge and detachably connected to the second end, so that the push-pull force gauge drives the support rod to swing. The technical solution provided by this utility model offers a gearbox backlash detection device that is easy to operate.

Description

Technical Field

[0001] This utility model relates to the technical 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. Utility Model Content

[0005] The main purpose 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 gearbox backlash detection device proposed in this utility model includes:

[0007] Clamping device for securing the speed reducer;

[0008] The testing device includes a guide rail, a dial indicator, and a push-pull 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 push-pull force gauge are opposite to each other and coaxially arranged. The dial indicator and the push-pull force gauge are slidably connected to the guide rail so that they are close to or far from each other.

[0009] The support rod has a first end and a second end, the first end for connecting to the output shaft of the reducer, and the second end extending away from the reducer between the dial indicator and the push-pull force gauge; and

[0010] An active connecting component is located at the force-applying end of the push-pull force gauge and is detachably connected to the second end, so that the push-pull force gauge drives the support rod to swing.

[0011] In one embodiment, the movable connection assembly includes a positioning element and a rod end joint bearing. The positioning element is located at the second end, and the rod end joint bearing is located at the force-applying end of the push-pull force gauge and is sleeved outside the positioning element; and / or,

[0012] The second end has a first clearance notch on its sidewall facing the dial indicator; and / or,

[0013] The second end has a second clearance notch on the side wall facing the push-pull force gauge.

[0014] In one embodiment, the detection device further includes a drive component that drives the push-pull force gauge to move the push-pull force gauge closer to or further away from the dial indicator.

[0015] In one embodiment, the driving component includes:

[0016] Fixed block; and

[0017] A first screw, one end of which is connected to the side of the push-pull force gauge away from the dial indicator, and the other end of which is threadedly connected to the fixing block. The first screw drives the push-pull force gauge to move by rotating itself.

[0018] 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.

[0019] In one embodiment, the clamping device includes:

[0020] The base plate, and the guide rail is fixed to the base plate;

[0021] A fixing plate, fixed to the base plate and perpendicular to the base plate; and

[0022] 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.

[0023] In one embodiment, the clamp assembly is slidably disposed on the base plate to move closer to or further away from the fixed plate to adjust the size of the preset interval; and / or,

[0024] The clamping assembly is provided in multiple ways, and the multiple clamping assemblies are spaced apart along a preset direction, which is perpendicular to the extension direction of the guide rail.

[0025] In one embodiment, the gearbox backlash detection device further includes an anti-rotation component, which is disposed on the base plate and is used to lock the input shaft of the gearbox to prevent the input shaft of the gearbox from rotating.

[0026] In one embodiment, the anti-rotation component is slidably disposed on the base plate and the sliding direction forms a preset angle with the extension direction of the guide rail.

[0027] In one embodiment, the gearbox backlash detection device further includes a positioning structure disposed on the clamping device for positioning the gearbox so that the distance between the axis of the output shaft of the gearbox and the axis of the push-pull force gauge is configured as a preset distance.

[0028] The backlash detection device of this utility model includes a clamping device, a detection device, a support rod, and a movable connecting assembly. 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 push-pull 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 push-pull 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 push-pull gauge. The dial indicator and the push-pull gauge are opposite 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 push-pull gauge, ensuring that the measuring point of the dial indicator on the support rod and the point of action of the push-pull gauge on the support rod are collinear, guaranteeing the accuracy of the backlash detection. The first 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 second end of the support rod extends between the dial indicator and the push-pull gauge, allowing the force of the push-pull gauge to be transmitted to the output shaft through the support rod, forcing the output shaft to rotate. The movable connecting assembly connects the second end of the support rod to the force-applying end of the push-pull force gauge. The linear movement of the force gauge drives the second end of the support rod to rotate, causing the output shaft to rotate to two extreme positions. The angle between these two extreme positions is the backlash of the reducer. In other words, by measuring the arc length and radius of the support rod's rotation between the two extreme positions caused by the force-applying end of the push-pull force gauge, the rotation angle can be calculated, thus achieving backlash detection. The detection process is simple and easy to operate. The dial indicator measures the arc length, while the push-pull force gauge controls the applied force and ensures uniform and stable force application. The structure is simple, without complex electrical control or precision sensing components, making it easy to manufacture and maintain. Furthermore, the push-pull force gauge 230 can withstand a wide load range. By driving the support rod to move in two directions, the dial indicator only measures the movement data of the support rod, making it particularly suitable for reducers with large size and heavy components. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 A schematic diagram of an embodiment of the gearbox backlash detection device provided by this utility model. Figure 1 ;

[0031] Figure 2 A schematic diagram of an embodiment of the gearbox backlash detection device provided by this utility model. Figure 2 ;

[0032] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0033] Figure 4 A schematic diagram of an embodiment of the gearbox backlash detection device provided by this utility model. Figure 3 ;

[0034] Figure 5 A schematic diagram of an embodiment of the gearbox backlash detection device provided by this utility model. Figure 4 ;

[0035] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0036] Figure 7 A simplified diagram illustrating the detection principle of the gearbox backlash detection device provided by this utility model.

[0037] Explanation of icon numbers:

[0038] 10. Reducer; 11. Output shaft; 12. Input shaft;

[0039] 100. Clamping device; 110. Base plate; 120. Fixing plate; 121. Positioning hole; 130. Clamping assembly; 131. Clamping component;

[0040] 210. Guide rail; 220. Dial indicator; 230. Push-pull force gauge; 240. Positioning assembly; 241. Third screw; 250. Drive assembly; 251. Fixing block; 252. First screw;

[0041] 300, Support rod; 301, First clearance notch; 302, Second clearance notch;

[0042] 400. Movable connection assembly; 410. Positioning element; 420. Rod end joint bearing;

[0043] 500. Lifting device; 510. Support assembly; 520. Bracket assembly; 521. Slide rail; 530. Second screw; 531. Handle;

[0044] 600 Anti-rotation component; 610 Mounting bracket; 620 Clamping block; 630 Locking component.

[0045] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators 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 indicators will also change accordingly.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation" should be interpreted broadly. For example, "fixation" 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 utility model according to the specific circumstances.

[0049] Furthermore, if the embodiments of this utility model 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 where both A and B are satisfied simultaneously. 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 utility model.

[0050] This utility model proposes a gearbox backlash detection device.

[0051] Please see Figures 1 to 2 , Figure 1 A schematic diagram of an embodiment of the gearbox backlash detection device provided by this utility model. Figure 1 , Figure 2 A schematic diagram of an embodiment of the gearbox backlash detection device provided by this utility model. Figure 2 .

[0052] In one embodiment of this utility model, the gearbox backlash detection device includes:

[0053] Clamping device 100 is used to fix the reducer 10;

[0054] The testing device includes a guide rail 210, a dial indicator 220, and a push-pull 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 push-pull force gauge 230 are opposite to each other and coaxially arranged. The dial indicator 220 and the push-pull force gauge 230 are slidably connected to the guide rail 210 so that they are close to each other or far from each other.

[0055] Support rod 300 has a first end and a second end, the first end for connecting to the output shaft 11 of reducer 10, and the second end extending away from reducer 10 between dial indicator 220 and push-pull force gauge 230; and

[0056] The movable connecting component 400 is located at the force-applying end of the push-pull force gauge 230 and is detachably connected to the second end, so that the push-pull force gauge 230 drives the support rod 300 to swing.

[0057] The back clearance detection device of this utility model includes a clamping device 100, a detection device, a support rod 300, and a movable connecting assembly 400. The clamping device 100 is used to fix the reducer 10, so as to prevent the reducer 10 from being displaced or shaking due to external forces (such as the push force of the dial indicator 220 and the push-pull force gauge 230) during the detection process, thus ensuring the stability of the reducer 10 during the detection process and improving the back clearance detection accuracy. The testing device includes a guide rail 210, a dial indicator 220, and a push-pull force 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 push-pull force gauge 230. The dial indicator 220 and the push-pull force 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 push-pull force gauge 230, ensuring that the measuring point of the dial indicator 220 relative to the support rod 300 is collinear with the point of action of the push-pull force gauge 230 relative to the support rod 300, thus ensuring the accuracy of backlash detection. The first 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 second end of the support rod 300 extends between the dial indicator 220 and the push-pull force gauge 230, so that the force of the push-pull force gauge 230 can be transmitted to the output shaft 11 through the support rod 300, forcing the output shaft 11 to rotate. The movable connecting assembly 400 connects the second end of the support rod 300 and the force-applying end of the push-pull force gauge 230. The linear movement of the push-pull force gauge 230 drives the second end of the support rod 300 to rotate, causing the output shaft 11 to rotate to two extreme positions. The angle between these two extreme positions is the backlash of the reducer 10. In other words, by measuring the arc length and radius of the rotation of the support rod 300 between the two extreme positions caused by the force-applying end of the push-pull force gauge 230, the rotation angle can be calculated, thus achieving backlash detection. The detection process is simple and easy to operate. The dial indicator 220 measures the rotation arc length, while the push-pull force gauge 230 controls the applied force and ensures uniform and stable force application. The structure is simple, without complex electrical control or precision sensing components, making it easy to manufacture and maintain. In addition, the push-pull force gauge 230 can withstand a wide load range. The push-pull force gauge 230 drives the support rod 300 to move in two directions. The dial indicator 220 is only responsible for measuring the movement data of the support rod 300. It is especially suitable for use in reducers 10 with large volume and heavy parts.

[0058] In one embodiment, the movable connection assembly 400 includes a positioning member 410 and a rod end joint bearing 420. The positioning member 410 is located at the second end, and the rod end joint bearing 420 is located at the force-applying end of the push-pull force gauge 230 and is sleeved on the outside of the positioning member 410.

[0059] In an embodiment of this utility model, the movable connection assembly 400 includes a positioning element 410 and a rod end joint bearing 420. The positioning element 410 can be in the form of a pin or bolt, etc., and is installed in a hole provided at the second end of the support rod 300 and protrudes from the support rod 300. The rod end joint bearing 420 is disposed at the force-applying end of the push-pull force gauge 230 and sleeved on the positioning element 410. When the push-pull force gauge 230 moves, the force-applying end drives the rod end joint bearing 420 to move, which in turn drives the positioning element 410 to move, thereby causing the support rod 300 to swing, so that the support rod 300 can drive the output shaft 11 to move between two extreme positions. Among them, the rod end spherical plain bearing 420 is a type of spherical sliding bearing, which is composed of the outer spherical surface of the inner ring and the inner spherical surface of the outer ring. It can withstand radial, axial or combined loads and is suitable for low-speed oscillation, tilting and rotational motion. It can still work stably, especially when the installation is misaligned. This allows the linear motion of the push-pull force gauge 230 to be rotated into the oscillation of the support rod 300, avoiding the problem of the push-pull force gauge 230 getting stuck.

[0060] Combination Figures 1 to 3 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:

[0061] The reducer 10 is positioned using a positioning structure consisting of positioning hole 121 and positioning pin (not shown in the figure), so that the distance between the axis of output shaft 11 and the axis of push-pull force gauge 230 is set to a preset distance, that is, so that... Figure 1 and Figure 7 L1 is a preset fixed value;

[0062] The reducer 10 is fixed using the clamping device 100;

[0063] The sliding positioning structure is moved to the input shaft 12, and the input shaft 12 of the reducer 10 is fixed by the positioning structure;

[0064] The first end of the support rod 300 is connected to the output shaft 11 of the reducer 10, and the second end of the support rod 300 is connected to the push-pull force gauge 230, so that the support rod 300 is as follows: Figure 7 As shown by the middle line segment OA;

[0065] The dial indicator 220 moves along the guide rail 210 toward the direction of the push-pull force gauge 230. The measuring end of the dial indicator 220 contacts the support rod 300 and continuously applies a pushing force. Due to the large size of the reducer 10, the dial indicator 220 cannot push the support rod 300 to rotate, and the measuring rod of the dial indicator 220 retracts.

[0066] Fixed dial indicator 220;

[0067] The push-pull force gauge 230 moves along the guide rail 210 away from the dial gauge 220. The force-applying end of the push-pull force gauge 230 drives the support rod 300 to rotate with a preset force until the support rod 300 can no longer rotate. At this time, 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;

[0068] Zero the reading of the dial indicator 220;

[0069] The push-pull force gauge 230 moves along the guide rail 210 towards the dial gauge 220. The force-applying end of the push-pull force gauge 230 then applies a preset force to drive the support rod 300 to rotate in the opposite direction 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.

[0070] 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 push-pull force 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 on a very small order of magnitude, this straight distance L2 can be approximated as the rotation arc length of the force application point of the push-pull force table 230.

[0071] The rotation radius of the force application point of the push-pull force gauge 230 is determined according to the preset spacing. Although the force application point of the push-pull force 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 push-pull force gauge 230 is actually slightly larger than the distance between the axis of the output shaft 11 and the axis of the push-pull force 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 push-pull force gauge 230, which means that the rotation radius of the force application point of the push-pull force gauge 230 is equal to the preset spacing.

[0072] 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:

[0073]

[0074] For example, if the preset spacing L1 is configured as 120mm, and L2 is measured to be 0.035mm, the back gap is calculated to be 1 arc minute.

[0075] Without a positioning structure, the backlash of the reducer 10 can be calculated by measuring only two values: L1 (approximately the arc length of rotation) and L2 (approximately the radius of rotation), making the operation simple. After setting a positioning structure to position the reducer 10, the entire detection process only requires measuring one value, L2, making the operation even simpler and further improving the efficiency of backlash detection.

[0076] In one embodiment, a first clearance notch 301 is provided on the side wall of the second end facing the dial indicator 220; and / or,

[0077] The second end has a second clearance notch 302 on the side wall facing the push-pull force gauge 230.

[0078] Reference Figure 3 In this embodiment of the invention, for the relatively large reducer 10, the components are heavy. For the support rod 300 to drive the output shaft 11 to rotate, the support rod 300 itself needs high strength and rigidity. Therefore, the width of the support rod 300 (along the extension direction of the guide rail 210) is designed to be relatively wide. This results in a large distance between the force application point of the push-pull force gauge 230 and the measurement point of the dial indicator 220, affecting the accuracy of the measurement results. Therefore, a first clearance notch 301 facing the dial indicator 220 is provided on the support rod 300. The measuring end of the dial indicator 220 extends into the first clearance notch 301 and abuts against the side wall of the first clearance notch 301 facing the dial indicator 220, making the measuring end of the dial indicator 220 closer to the force application end of the push-pull force gauge 230. This makes the measurement result of the dial indicator 220 closer to the actual movement of the support rod 300, thereby improving the accuracy of backlash detection.

[0079] Reference Figure 3 In an embodiment of this utility model, a second clearance notch 302 facing the push-pull force gauge 230 is provided on the support rod 300. The second clearance notch 302 is located on the side of the second end of the support rod 300 facing the push-pull force gauge 230, in order to avoid the push-pull force gauge 230 and reduce the risk of interference between the support rod 300 and the push-pull force gauge 230.

[0080] In one embodiment, the detection device further includes a drive assembly 250, which drives the push-pull force gauge 230 to move the push-pull force gauge 230 closer to or further away from the dial gauge 220.

[0081] Reference Figure 1In this embodiment of the invention, the detection device further includes a drive assembly 250, which drives a push-pull force 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 push-pull force gauge 230 to move along the guide rail 210 towards the dial indicator 220 until the pushing end of the push-pull force 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 push-pull force 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 push-pull force gauge 230 is improved, and the convenience of operating the drive assembly 250 is also improved.

[0082] In one embodiment, the drive component 250 includes:

[0083] Fixed block 251;

[0084] The first screw 252 has one end connected to the side of the push-pull force gauge 230 away from the dial gauge 220, and the other end of the first screw 252 is threadedly connected to the fixing block 251. The first screw 252 drives the push-pull force gauge 230 to move by rotating itself.

[0085] Reference Figure 1 and Figure 2 In this embodiment of the invention, the drive assembly 250 includes a fixing block 251 and a first screw 252. The fixing block 251 is fixed to the guide rail 210 or the bracket assembly 520. One end of the first screw 252 is connected to the side of the push-pull force gauge 230 away from the dial indicator 220, and the other end is threadedly connected to the fixing block 251. The fixing block 251 and the first screw 252 form a screw-nut mechanism. In use, tightening the first screw 252 causes it to move axially toward the push-pull force gauge 230 due to the threaded engagement between the first screw 252 and the fixing block 251. The end of the first screw 252 pushes the push-pull force gauge 230 to slide along the guide rail 210 toward the dial indicator 220, and pushes the support rod 300 to the second position. The first screw 252 is rotated in the reverse direction, moving axially away from the push-pull force gauge 230. This causes the push-pull force gauge 230 to move along the guide rail 210 away from the dial indicator 220, thus resetting the push-pull force gauge 230. The axial movement distance of the first screw 252 is fixed for each rotation angle, allowing precise control of the movement distance of the push-pull force gauge 230. This reduces excessive movement of the push-pull force gauge 230 due to excessive force, lowering the risk of damage to both the push-pull force gauge 230 and the reducer 10.

[0086] In one embodiment, the detection device further includes a positioning component 240 for positioning the dial indicator 220 at a preset position.

[0087] Reference Figures 1 to 3 as well as Figure 5 , Figure 6 In this embodiment of the invention, the detection device further includes a positioning component 240. After the dial indicator 220 moves towards the support rod 300 in the direction of the push-pull force gauge 230, 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 push-pull force gauge 230 pushes the support rod 300. 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 push-pull force 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.

[0088] In one embodiment, the positioning component 240 includes a third screw 241, and the bracket component 520 is provided with a slide groove 521 parallel to the guide rail 210. One end of the third screw 241 is inserted into the interior of the slide groove 521, and the other end is threadedly connected to the dial indicator 220. The third screw 241 abuts against the bottom wall of the slide groove 521 by its own rotation, so that the dial indicator 220 is positioned at a preset position.

[0089] Reference Figure 5 , Figure 6 In this embodiment of the invention, the positioning component 240 includes a third screw 241. One end of the third screw 241 is inserted into the groove 521 of the bracket assembly 520, 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, the third screw 241 is rotated, and the screw drive pushes the third screw 241 into the groove 521 until the end of the third screw 241 tightly abuts against the bottom wall of the groove 521. At this time, the static friction between the third screw 241 and the bottom wall of the groove 521 locks the dial indicator 220 to the bracket assembly 520, 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 third screw 241. The operation is simple, the processing difficulty is low, and the manufacturing cost is low. In addition, the threaded connection between the third screw 241 and the dial indicator 220 has self-locking property, which provides good positioning effect for the dial indicator 220.

[0090] In one embodiment, the gearbox backlash detection device further includes a lifting device 500, which is driven to connect to the guide rail 210 to adjust the height of the detection device.

[0091] Reference Figure 2 In this embodiment of the invention, the reducer backlash detection equipment also includes a lifting device 500. The lifting device 500 drives the guide rail 210, causing the entire guide rail 210 and the dial indicator 220 and push-pull force gauge 230 mounted on the guide rail 210 to rise and fall synchronously. This ensures that the measuring end of the dial indicator 220 and the force-applying end of the push-pull force 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 500 can adjust the height of the guide rail 210 to ensure that the axes of the dial indicator 220 and push-pull force gauge 230 are always aligned with the support rod 300, thereby adapting the reducer backlash detection equipment to reducers 10 of different sizes and specifications, improving the equipment's versatility. The lifting device 500 can achieve the lifting of the detection device using a slider and slide rail, a screw and nut mechanism, or a linear motor.

[0092] In one embodiment, the lifting device 500 includes:

[0093] The bracket assembly 510 is disposed on one side of the guide rail 210;

[0094] The bracket assembly 520 is slidably disposed on the bracket assembly 510 along the height direction of the bracket assembly 510, and the guide rail 210 is fixed to the bracket assembly 520; and

[0095] The second screw 530 is rotatably disposed on the bracket assembly 510, passes through the bracket assembly 520, and is threadedly connected to the bracket assembly 520.

[0096] Reference Figure 2In an embodiment of this utility model, the lifting device 500 includes a support assembly 510, a bracket assembly 520, and a second screw 530. The support assembly 510 serves as the basic support for the entire lifting device 500. The bracket assembly 520 is slidably mounted on the support assembly 510 along the height direction of the support assembly 510. The guide rail 210 is fixed on the bracket assembly 520. By sliding the bracket assembly 520 along the support assembly 510, the guide rail 210, the dial indicator 220, and the push-pull force gauge 230 are driven to rise and fall synchronously, thereby realizing the height adjustment of the dial indicator 220 and the push-pull force gauge 230. The second screw 530 is rotatably mounted on the bracket assembly 510 and passes through the bracket assembly 520, where it is threadedly connected. This forms a screw-nut mechanism, where rotating the second screw 530 drives the bracket assembly 520 to move up and down. This mechanism is simple in structure, inexpensive to manufacture, and has a high load capacity and a degree of self-locking, facilitating the fixing of the bracket assembly 520 to the required height. Specifically, in this embodiment, a handle 531 is also provided at the top of the second screw 530 for easy rotation.

[0097] In one embodiment, the clamping device 100 includes:

[0098] The base plate 110, and the guide rail 210 are fixed to the base plate 110;

[0099] A fixing plate 120 is fixed to the base plate 110 and perpendicular to the base plate 110; and

[0100] A 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.

[0101] Reference Figures 1 to 2In this 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.

[0102] In one embodiment, the clamp assembly 130 is slidably disposed on the base plate 110 to move closer to or further away from the fixing plate 120, thereby adjusting the size of the preset interval; and / or,

[0103] Multiple clamping assemblies 130 are provided, and the multiple clamping assemblies 130 are spaced apart along a preset direction, which is perpendicular to the extension direction of the guide rail 210.

[0104] 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 moving 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 in place by bolts or buckles, ensuring the clamping of the reducer 10 is secure.

[0105] Reference Figure 2 In this embodiment of the invention, multiple clamping assemblies 130 are spaced apart along a preset direction, which is perpendicular to the extension direction of the guide rail 210 and also along the length direction of the reducer 10. By setting multiple clamping assemblies 130, reducers 10 of different lengths can be adapted, further improving the versatility of the equipment and expanding its adaptability. When clamping reducers 10 of different lengths, only one of the multiple clamping assemblies 130 can be used, or multiple clamping assemblies 130 can be used.

[0106] In one embodiment, the gearbox backlash detection device further includes an anti-rotation component 600, which is disposed on the base plate 110 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.

[0107] Reference Figure 2 In this embodiment of the invention, the reducer backlash detection device is further equipped with an anti-rotation component 600. The anti-rotation component 600 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 600 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 600 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.

[0108] Specifically, in this embodiment, refer to Figure 4The anti-rotation component 600 includes a mounting bracket 610, a locking element 630, and two clamping blocks 620. The mounting bracket 610 is mounted on a base plate 110, and the two clamping blocks 620 are slidably mounted on the mounting bracket 610. A clamping groove is provided between the two clamping blocks 620 for clamping the input shaft 12 of the reducer 10. The locking element 630 is used to drive the two clamping blocks 620 closer to or further away from each other. The locking element 630 can be a bolt or a bolt-nut assembly, etc. In this embodiment, the locking element 630 passes through one clamping block 620 and is threadedly connected to the other clamping block 620. By tightening the locking element 630, the head of the locking bolt forces the two clamping blocks 620 closer to each other, so that the two opposing inner walls of the clamping groove tightly clamp the input shaft 12 of the reducer 10, increasing the static friction between the clamping blocks 620 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.

[0109] In one embodiment, the anti-rotation component 600 is slidably disposed on the base plate 110 and the sliding direction forms a preset angle with the extension direction of the guide rail 210.

[0110] Combination Figures 1 to 4 In embodiments of this utility model, after different specifications of reducers 10 are fixed by clamping device 100, the distance between the input shaft 12 and the fixing plate 120, and the distance between the input shaft 12 and the guide rail 210 are different. The mounting bracket 610 of the anti-rotation component 600 is slidably disposed on the base plate 110, with the sliding direction inclined to the extension direction of the guide rail 210, so that the anti-rotation component 600 can adjust its position according to the position of the input shaft 12, making it convenient for the anti-rotation component 600 to be used with reducers 10 of different specifications. The preset included angle can be configured as needed to meet functional requirements, and is not limited here.

[0111] In one embodiment, the gearbox backlash detection device further includes a positioning structure disposed on the clamping device 100, which is used to position the gearbox 10 so that the distance between the axis of the output shaft 11 of the gearbox 10 and the axis of the push-pull force gauge 230 is configured as a preset distance.

[0112] In this embodiment of the invention, the positioning structure is a spatial positioning reference set on the clamping device 100, which constrains the installation position of the reducer 10. When the reducer 10 is fixed on the clamping device 100, the outer shell of the reducer 10 fits or aligns with the positioning structure, 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 push-pull force 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 push-pull force gauge 230 a preset fixed value. By setting the positioning structure to position the reducer 10, the rotation radius of the force application point of the push-pull force gauge 230 on the support rod 300 is a preset fixed value, eliminating the need to measure the rotation radius of the force application point of the push-pull force gauge 230 every time, reducing operation steps and improving detection efficiency.

[0113] In one embodiment, the positioning structure includes a matching positioning hole 121 and a positioning pin (not shown in the figure). 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 pin 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 push-pull force gauge 230 is configured as a preset distance.

[0114] Reference Figure 2 and Figure 5 In this embodiment of the invention, the positioning structure includes a matching positioning pin and positioning holes 121. Positioning holes 121 are provided in the clamping device 100, and multiple holes are spaced apart along the length of the support rod 300. Different positioning holes 121 are set according to the different sizes of the reducers 10. The positioning pin is pluggably fitted into the positioning hole 121, and the exposed part of the positioning pin directly abuts against the housing of the reducer 10. The reducer 10 is positioned through this contact, ensuring that after different sizes of reducers 10 are positioned by the positioning structure, the distance between the axis of the output shaft 11 and the axis of the push-pull force 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 push-pull force gauge 230 each time. The matching of the positioning hole 121 and the positioning pin is simple in structure, easy to manufacture, and convenient for positioning operations when replacing 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.

[0115] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

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 push-pull 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 push-pull force gauge are opposite to each other and coaxially arranged. The dial indicator and the push-pull force gauge are slidably connected to the guide rail so that they are close to or far from each other. The support rod has a first end and a second end, the first end for connecting to the output shaft of the reducer, and the second end extending away from the reducer between the dial indicator and the push-pull force gauge; and An active connecting component is located at the force-applying end of the push-pull force gauge and is detachably connected to the second end, so that the push-pull force gauge drives the support rod to swing.

2. The gearbox backlash detection device as described in claim 1, characterized in that, The movable connection assembly includes a positioning element and a rod end joint bearing. The positioning element is located at the second end, and the rod end joint bearing is located at the force-applying end of the push-pull force gauge and is sleeved outside the positioning element; and / or, The second end has a first clearance notch on its sidewall facing the dial indicator; and / or, The second end has a second clearance notch on the side wall facing the push-pull force gauge.

3. The gearbox backlash detection device as described in claim 1, characterized in that, The detection device further includes a drive component that drives the push-pull force gauge to move closer to or away from the dial indicator.

4. The gearbox backlash detection device as described in claim 3, characterized in that, The driving component includes: Fixed block; and A first screw, one end of which is connected to the side of the push-pull force gauge away from the dial indicator, and the other end of which is threadedly connected to the fixing block. The first screw drives the push-pull force gauge to move by rotating itself.

5. The gearbox backlash detection device as described in claim 1, 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 1, 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; 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.

7. The gearbox backlash detection device as described in claim 6, characterized in that, The clamp assembly is slidably mounted on the base plate to move closer to or further away from the fixed plate, thereby adjusting the size of the preset interval; and / or, The clamping assembly is provided in multiple ways, and the multiple clamping assemblies are spaced apart along a preset direction, which is perpendicular to the extension direction of the guide rail.

8. The gearbox backlash detection device as described in claim 6, characterized in that, The gearbox backlash detection device also includes an anti-rotation component, which is located on the base plate and is used to lock the input shaft of the gearbox to prevent the input shaft of the gearbox from rotating.

9. The gearbox backlash detection device as described in claim 8, characterized in that, The anti-rotation component is slidably mounted on the base plate and the sliding direction forms a preset angle with the extension direction of the guide rail.

10. The gearbox backlash detection device as described in claim 1, characterized in that, The gearbox backlash detection device further includes a positioning structure, which is disposed on the clamping device and is used to position the gearbox so that the distance between the axis of the output shaft of the gearbox and the axis of the push-pull force gauge is configured as a preset distance.

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