CN216116745U

CN216116745U - Gear box meshing clearance detection device

Info

Publication number: CN216116745U
Application number: CN202121475596.2U
Authority: CN
Inventors: 曹生炜; 杜姗; 陈永飞
Original assignee: Zhejiang Linix Motor Co Ltd
Current assignee: Zhejiang Linix Motor Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-03-22
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to a gear box meshing clearance detection device. The utility model adopts the following scheme: the utility model provides a gear box backlash detection device, is equipped with the support that is used for placing the work piece between first shaft coupling and the mechanism that splines including the first shaft coupling that is used for connecting the work piece input shaft and the mechanism that splines that is used for connecting the work piece output shaft, first shaft coupling is connected with servo motor, is connected with the torque sensor of measurement moment of torsion between first shaft coupling and the servo motor. The utility model has the advantages of simple structure and capability of detecting the clearance between the output shaft gear of the gear box and the input shaft gear of the gear box.

Description

Gear box meshing clearance detection device

Technical Field

The utility model relates to a gear box meshing clearance detection device.

Background

For the gear box, the size of the meshing clearance between the input shaft gear and the output shaft gear directly influences the quality of products. Too large a meshing clearance between the input shaft gear and the output shaft gear causes the following drawbacks: impact is generated when the device is used; the tooth surface is easy to be damaged, and the service life is shortened; the gear ratio is inaccurate. The too small meshing clearance between the input shaft gear and the output shaft gear causes the following defects: the resistance is increased and the gear is abnormally worn. Therefore, gearbox backlash detection is typically required for gearboxes.

The chinese intellectual property office discloses a utility model file with a bulletin number of CN210773986U in 16.6.2020, which discloses a differential gear meshing clearance detection device, including frame, servo motor, first shaft coupling, torque sensor, second shaft coupling, bearing frame, pneumatic sliding ring, anchor clamps cylinder and tight anchor clamps that rise, servo motor's base is fixed in the top of frame, servo motor's output shaft passes through the coupling joint torque sensor's one end, torque sensor's the other end passes through the coupling joint the bearing frame, the bearing frame is connected pneumatic sliding ring, pneumatic sliding ring connects the stiff end of anchor clamps cylinder, the output shaft of anchor clamps cylinder rises tight anchor clamps.

The above scheme has the following problems: the clearance between the output shaft gear of the assembled gearbox and the input shaft gear of the gearbox cannot be detected.

Disclosure of Invention

The utility model provides a gear box meshing clearance detection device capable of detecting the meshing clearance between an output shaft gear and an input shaft gear of an assembled gear box.

The utility model adopts the following scheme: the utility model provides a gear box backlash detection device, is equipped with the support that is used for placing the work piece including the first shaft coupling that is used for connecting the work piece input shaft and the mechanism that splines that is used for connecting the work piece output shaft, first shaft coupling and servo motor output shaft are connected, are connected with the torque sensor of measuring the moment of torsion between first shaft coupling and the servo motor output shaft.

When the gearbox is used, the control module controls the rotation stopping mechanism to stop the rotation of the output shaft of the gearbox; then, the control module controls the servo motor to drive the input shaft of the gear box to rotate by an angle alpha; then, the torque sensor measures the torque T1 between the output shaft of the servo motor and the input shaft of the gear box; subsequently, the torque data T1 obtained by the torque sensor is compared with a standard torque T0, and the standard torque T0 is a torque range value, namely, the rotation angle setting data α of the output shaft of the servo motor, and the standard torque T0 detected by the α angle of the servo motor, wherein T0 is the standard torque; and finally, replacing the gear box which is detected to be the gear box to be detected, and repeating the steps.

When the output shaft of the gear box is stopped by the rotation stopping mechanism, and the output shaft of the servo motor is matched with the input shaft of the gear box, the rotation of the output shaft of the servo motor drives the gear in the gear box to rotate by a certain angle step by step, and the torque sensor connected between the output shaft of the servo motor and the input shaft of the gear box is subjected to smaller torque; when the meshing clearance between the input shaft and the output shaft of the gearbox is eliminated, the gears in the gearbox cannot continuously rotate, the output shaft of the servo motor cannot continuously rotate the inner gear of the gearbox, and the torque received by the torque sensor connected between the output shaft of the servo motor and the input shaft of the gearbox is rapidly increased. Measuring an angle alpha required by the output shaft of the servo motor when the standard meshing clearance of the gearbox is eliminated, measuring a torque value range T0 of the torque sensor when the output shaft of the servo motor rotates by the angle alpha, detecting the gearbox by taking the value as a reference to enable the output shaft of the servo motor to rotate by the angle alpha, comparing a measured value T1 of the torque sensor with T0, and if T1 is within the numerical range of T0, giving a qualified result of the meshing clearance of the gear; otherwise, the result that the gear meshing clearance is unqualified is given. If the output shaft of the servo motor is prevented from rotating by the gearbox before the rotating angle is smaller than alpha and the value of the torque sensor exceeds the upper limit value of T0, the result that the meshing clearance of the gearbox is unqualified is directly given, and the actual result is that the meshing clearance of the gearbox is too small. Compared with the traditional gear meshing clearance measurement, the gear meshing clearance measurement can be carried out on the gear box as a whole, the measurement steps are reduced, and the working efficiency is improved. The output shaft rotation angle of the servo motor can be adjusted, so that different gear boxes can be tested by the device, and the universality of the device is improved.

Preferably, the device further comprises a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate are fixed at two ends of the guide rod respectively, the guide rod is provided with a movable plate in a sliding manner, a rotation stopping mechanism is fixed on one side of the movable plate close to the first fixing plate, the bracket is fixed with the first fixing plate, the bracket is located between the movable plate and the first fixing plate, and a servo motor is fixed on one side of the first fixing plate far away from the bracket. The movable plate is in sliding fit with the guide rod, so that the movable plate can move between the first fixing plate and the second fixing plate, and the rotation stopping mechanism can adapt to different workpieces.

Preferably, the rotation stopping mechanism comprises a second coupling connected with the workpiece output shaft, and a rotation stopping motor connected with the second coupling. The rotation of the output shaft gear of the gear is limited through the self-locking function of the rotation stopping motor, the rotation stopping effect is better, and therefore the accuracy of the gear box meshing clearance detection result is improved.

Preferably, the bracket is provided with a yielding groove penetrating through the bracket. Through the abdicating groove, the workpiece can be easily placed on the bracket.

Preferably, the second fixed plate is fixed with a lifting mechanism, and an output shaft of the lifting mechanism is fixed with the movable plate. The lifting mechanism is a screw rod lifter which can be purchased in the market.

Preferably, a support plate for fixing the workpiece is detachably fixed above the support, and the support plate is provided with a through hole. The backup pad passes through the bolt and is fixed with the work piece, and the backup pad is placed back on the support, and the backup pad passes through the bolt and is fixed with the support, makes things convenient for support and work piece fixed, avoids taking place the vibration at the detection in-process work piece.

The utility model has the following advantages: the structure is simple; the gap between the output shaft gear of the gear box and the input shaft gear of the gear box can be detected; the output shaft of the gear box is stopped by the rotation stopping motor, so that the rotation stopping effect is better, and the detection result is high in accuracy; the yielding groove yields the input shaft of the workpiece, and the workpiece can be easily placed on the support.

Drawings

FIG. 1 is a state diagram of the present invention in use;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic structural view of the support plate.

Detailed Description

To further illustrate the technical solution adopted by the present invention to achieve the objects of the present invention, the following detailed description is made with reference to the accompanying drawings, wherein:

as shown in fig. 1 to 2, a gear box meshing gap detecting device includes a first fixing plate 6 horizontally disposed and a second fixing plate 7 located above the first fixing plate 6. The first fixing plate 6 and the second fixing plate 7 are fixed at two ends of a guide rod 8 which is vertically arranged, the four guide rods 8 which are vertically arranged are slidably provided with a movable plate 9 which is horizontally arranged, the movable plate 9 is provided with a yielding hole which runs through the movable plate 9, and the four guide rods 8 are respectively positioned in the yielding holes.

The first fixing plate 6 is fixed with the support 3, the support 3 is located between the movable plate 9 and the first fixing plate 6, one side of the first fixing plate 6, which is far away from the support 3, is fixed with the servo motor 4, and an output shaft of the servo motor 4 is connected with the first coupler 1. A torque sensor 5 for measuring torque is connected between the first coupler 1 and the output shaft of the servo motor 4. As shown in fig. 3, a support plate 32 is detachably fixed on the bracket 3 having the receding groove 31, the support plate 32 has a through hole 33, and the support plate 32 is detachably fixed to the workpiece 10. Due to the existence of the abdicating groove, as long as the lower end surface of the workpiece is higher than the upper end surface of the first coupler, the input shaft of the workpiece can be connected with the first coupler, and the workpiece can be conveniently placed.

An elevating mechanism 71 is fixed on the upper side of the second fixed plate 7, and an output shaft of the elevating mechanism 71 passes through the second fixed plate 7 and then is fixed on the upper side of the movable plate 9. The lifting mechanism is a screw rod lifter.

A rotation stopping mechanism 2 for connecting a workpiece output shaft is fixed on one side of the movable plate 9 close to the first fixed plate 6, and the rotation stopping mechanism 2 comprises a second coupler 21 for connecting with the workpiece 10 output shaft and a rotation stopping motor 22 connected with the second coupler 21. The rotation stopping motor 22 is fixed on the upper side of the movable plate 9, an output shaft of the rotation stopping motor 22 is connected with the second coupling 21, and the movable plate 9 is located at two ends of the rotation stopping motor 22 and the second coupling 21.

The using method of the utility model is as follows: when the device is used, a workpiece and the supporting plate are fixed, and an input shaft of the workpiece penetrates through the through hole; then, a workpiece and a support plate are placed on the support, an input shaft of the workpiece is connected with a first coupler, an output shaft of the workpiece is connected with a rotation stopping mechanism, and then a control module controls an output shaft of a servo motor to drive an input shaft of a gear box to rotate by an angle alpha; then, the torque sensor measures the torque T1 between the output shaft of the servo motor and the input shaft of the gear box; subsequently, comparing the torque data T1 obtained by the torque sensor with a standard torque T0, wherein the standard torque T0 is a torque range value, namely the rotation angle setting data α of the output shaft of the servo motor, and the standard torque T0 detected by the rotation angle α of the output shaft of the servo motor, and T0; and finally, replacing the gear box which is detected to be the gear box to be detected, and repeating the steps.

Although the present invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a gear box backlash detection device, its characterized in that is equipped with support (3) that are used for placing work piece (10) including first shaft coupling (1) that are used for connecting the work piece input shaft and the mechanism (2) that splines that are used for connecting the work piece output shaft, first shaft coupling (1) and servo motor (4) output shaft are connected, are connected with torque sensor (5) of measuring the moment of torsion between first shaft coupling (1) and servo motor (4) output shaft.

2. The gear box meshing clearance detection device according to claim 1, characterized by further comprising a first fixing plate (6) and a second fixing plate (7), wherein the first fixing plate (6) and the second fixing plate (7) are fixed at two ends of a guide rod (8) respectively, the guide rod (8) is slidably provided with a movable plate (9), a rotation stopping mechanism (2) is fixed on one side of the movable plate (9) close to the first fixing plate (6), the bracket (3) is fixed with the first fixing plate (6), the bracket (3) is located between the movable plate (9) and the first fixing plate (6), and a servo motor (4) is fixed on one side of the first fixing plate (6) far away from the bracket (3).

3. The gear box backlash detection device according to claim 1, wherein the rotation stop mechanism (2) comprises a second coupling (21) for connecting to an output shaft of the workpiece (10), and a rotation stop motor (22) connected to the second coupling (21).

4. A gearbox backlash detection device according to claim 2, wherein said bracket (3) is provided with a relief groove (31) extending through the bracket (3).

5. The gear box meshing clearance detecting device according to claim 2, wherein a lifting mechanism (71) is fixed on the second fixing plate (7), and an output end of the lifting mechanism (71) is fixed with the movable plate (9).

6. The gear box meshing gap detection device according to claim 2, wherein a support plate (32) used for matching with a workpiece (10) is detachably fixed on the support (3), and the support plate (32) is provided with a through hole (33).