CN115014755A

CN115014755A - Force application device and method for coloring inspection of bevel gear

Info

Publication number: CN115014755A
Application number: CN202210748966.8A
Authority: CN
Inventors: 孙鸿翔; 魏聿梁; 李辉全; 许文科; 孙涛
Original assignee: Qingdao Zhongke Guosheng Power Technology Co ltd
Current assignee: Qingdao Zhongke Guosheng Power Technology Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-09-06

Abstract

The force application device for coloring inspection of the bevel gear, disclosed by the invention, is used for solving the technical problem of low bevel gear detection efficiency in the prior art in the field of coloring impression inspection of the gear. The meshing performance of the gear suitable for drive gear box among gas turbine detects, drive gear box includes a pair of bevel gear and driven gear axle, including spline adapter, shoulder hexagon nut, center pin, PMKD and friction pack, drive gear box is as power take off in order to drive driven gear axle rotates, the transmission extremely the center pin drives its rotation, and when the center pin rotates, rotates shoulder hexagon nut drive friction pack to the center pin produces the frictional force of equidimension not, and the moment of torsion of increase driven gear axle is a pair of bevel gear carries out the performance and detects. The invention is used for improving the efficiency of bevel gear detection.

Description

Force application device and method for coloring inspection of bevel gear

Technical Field

The invention belongs to the field of gear coloring impression inspection, and particularly relates to a force application device and a method for bevel gear coloring inspection.

Background

With the rapid development of the technology of the domestic gas turbine, the structural design of each component at the present stage is more and more complex, and the requirements on processing and assembling precision are higher and higher, wherein the rotating speed of a transmission gear box in the gas turbine is extremely high, so that the inspection of coloring impressions is required in the assembly process of a bevel gear of the transmission gear box. Need paint the colorant on the driving gear axle in the colored impression inspection in the past, positive and negative direction rotation several rings after the assembly is accomplished, and the rethread decomposes the impression contact surface of inspection driven gear, only adjusts to the qualified just normal use that can of contact impression.

However, when the driving gear shaft is rotated to inspect the coloring impression, the contact impression of the driven gear can rotate freely, so that the contact impression can not be reflected on each tooth surface of the driven gear well and really, the distance between the impression and the tooth top, the tooth root, the concave surface, the convex surface and the like is difficult to measure with low definition, adverse factors can be caused to the transmission gear box, and the stability of the whole machine is further adversely affected.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention aims to provide a force application device for coloring inspection of a bevel gear, which at least solves the technical problem of low bevel gear detection efficiency in the prior art. The technical scheme of the scheme has a plurality of technical beneficial effects, which are described as follows:

the force application device for coloring inspection of the bevel gear is suitable for detecting the meshing performance of the gear of a transmission gear box in a gas turbine, wherein the transmission gear box comprises a pair of bevel gears and a driven gear shaft and comprises a spline adapter, a hexagonal nut with a shoulder, a central shaft, a fixed bottom plate and a friction assembly, one end of the central shaft is rotatably connected with the hexagonal nut with the shoulder, and the other end of the central shaft sequentially penetrates through the friction assembly and the fixed bottom plate, is provided with the spline adapter and is fixed with the driven gear shaft through the spline adapter; the fixed baseplate supports the friction assembly, wherein:

the transmission gear box is used as power output to drive the driven gear shaft to rotate, the transmission gear box is transmitted to the central shaft and drives the central shaft to rotate, when the central shaft rotates, the hexagonal nut with the shoulder is rotated to drive the friction assembly to generate friction forces with different sizes to the central shaft, the torque of the driven gear shaft is increased, and performance detection is carried out on the pair of bevel gears.

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

by adopting the device, the torque of the central shaft is adjusted through the friction assembly, so that the torque of the driven gear shaft is changed, and finally the detection of the performance of the bevel gear is achieved. The force application device solves the problem of impression inspection during meshing in the assembly process of a pair of bevel gears in a transmission gear box of a gas turbine, can enable the impression contact surfaces of the pair of gears to be closer to the contact area in a working state, and further increases the working stability of the gears; secondly, the colored impression of impression inspection can be clearer, and the position boundary from the tooth top, the tooth root and the like is easy to measure. The pressure is adjustable, the positioning precision is high, the reliability is good, the efficiency is high and the operation is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a force applying apparatus according to the present invention;

FIG. 2 is a schematic view of the automated control of the force applying device of the present invention;

wherein:

1. a spline adapter; 2. fixing the bottom plate; 3. a lower friction plate mounting seat; 4. a thrust bearing; 5. a friction plate; 6. an upper friction plate mounting seat; 7. a lower spring retainer ring; 8. a rectangular spring; 9. an upper spring retainer ring; 10. a hexagonal nut with shoulder; 11. a central shaft; 30. a transmission gear box; 31. conical teeth; 32. a driven gear shaft; 40. a torque meter.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

The force application device for the coloring inspection of the bevel gear 31 shown in fig. 1 is suitable for detecting the meshing performance of a gear of a transmission gear box 30 in a gas turbine, wherein the transmission gear box 30 comprises a pair of bevel gears 31 and a driven gear shaft 32 and comprises a spline adapter 1, a shoulder hexagon nut 10, a central shaft 11, a fixed bottom plate 2 and a friction assembly, one end of the central shaft 11 is rotatably connected with the shoulder hexagon nut 10, and the other end of the central shaft passes through the friction assembly and the fixed bottom plate 2 in sequence, is provided with the spline adapter 1 and is fixed with the driven gear shaft 32 through the spline adapter 1; the fixed base plate 2 supports the friction assembly, wherein:

the transmission gear box 30 is used as power output to drive the driven gear shaft 32 to rotate, and is transmitted to the central shaft 11 to drive the central shaft 11 to rotate, when the central shaft 11 rotates, the hexagonal nut 10 with the shoulder is rotated to drive the friction assembly to generate friction forces with different sizes towards the central shaft 11, the torque of the driven gear shaft 32 is increased, and the performance of the pair of bevel gears 31 is detected.

The working principle is as follows: the contact imprints of the pair of gears which are approximate to the working state can be clearly reflected on each tooth surface of the driven gear shaft 32 while rotating due to the action of the friction force of the driven gear shaft 32 when the gear shaft is driven, and the imprints are directly fed back to the quality inspection record list by means of rubbing the colored imprints. The authenticity and the definition of the colored impression inspection of the gear are improved, the working stability of the gear part is increased, the service life of the gear part is prolonged, and meanwhile, the size precision of the whole transmission gear box 30 assembly is improved conveniently and quickly, so that the performance of the transmission gear box is more reliable and specific:

as shown in fig. 2, the device further comprises a controller, a moment meter and a rotating device, preferably, the controller is connected with a display screen for displaying the adjusted moment, wherein; the torque meter is arranged on the movable gear box and is in communication connection with the controller, so as to monitor and detect the torque or torque parameters of the driven gear shaft 32 in real time. The rotating device is connected with the hexagonal nut with the shoulder 10, and the controller controls the rotating device to rotate the hexagonal nut with the shoulder 10 according to the torque or torque parameters, so that the friction force generated by the friction assembly is controlled, and the feedback information of the torque meter is stored in real time. The automatic detection mode replaces the manual detection mode, the detection precision is high, the torque can be adjusted, and the adjustment can be carried out according to the artificial subjective consciousness. The rotating device is a hydraulic or pneumatic rotating handle or a manipulator, and can be rotated, which is not described again.

As a specific implementation manner provided by the scheme, the friction assembly comprises a rectangular spring 8, an upper spring retainer ring 9, a lower spring retainer ring 7, a first friction plate 5 and a second friction plate 5, wherein the rectangular spring 8 is resisted between the upper spring retainer ring 9 and the lower spring retainer ring 7, the top surface of the upper spring retainer ring 9 is contacted with a hexagonal nut with a shoulder 10, and the bottom surface of the lower spring retainer ring 7 is contacted with the top surface of the fixed bottom plate 2;

a central shaft 11 sequentially penetrates through a rectangular spring 8, an upper spring retainer ring 9, a lower spring retainer ring 7, a first friction plate 5 and a second friction plate 5;

the first friction plate 5 is arranged above the second friction plate 5, the first friction plate 5 is fixed with the central shaft 11, and the second friction plate 5 is fixedly connected with the fixed bottom plate 2;

the hexagonal nut with shoulder 10 is rotated to compress the rectangular spring 8, and the first friction plate 5 and the second friction plate 5 are enlarged, so that the torque of the central shaft 11 is increased.

Further, friction plates 5 are relatively fragile and need to be protected, and therefore the friction assembly further comprises a lower friction plate 5 mounting 3 and an upper friction plate 5 mounting which are traversed by central shaft 11, wherein:

first friction disc 5 is installed in the 5 mount pads of upper portion friction disc, second friction disc 5 is installed in 5 mount pad 3 of lower part friction disc, and the 5 mount pads of upper portion friction disc are connected with 11 radially fixed and the mode of axial relatively movable of center pin, for example, the mode of key-type connection, center pin 11 sets up the keyway, the 5 mount pads of portion friction disc are provided with the key, and the size of keyway is greater than the size of key, it is radial or circumference spacing, circumference is portable, when rectangle spring 8 compresses, the axial displacement of 11 along the center pin of the 5 mount pads of upper portion friction disc, cause two friction discs 5 to carry out inseparabler contact, increase frictional force. The lower friction plate 5 mounting seat 3 is fixedly connected with the fixed bottom plate 2. Preferably, the first friction plate 5 and the second friction plate 5 are initially in contact during installation.

Further, the lower friction plate 5 mounting 3 is smaller or larger than the upper friction plate 5 mounting in view of a better contact of the two friction plates 5.

The thrust bearing 4 is used for transmitting torque to the central shaft 11, an inner ring of the thrust bearing 4 is fixedly connected with an upper friction plate 5 mounting seat and a first friction plate 5 through a fixing piece, the thrust bearing rotates along with the rotation of the central shaft 11, and an outer ring of the thrust bearing 4 is fixedly connected with a lower friction plate 5 mounting seat 3 and a second friction plate 5.

During detection, the controller controls the strength of the rectangular spring to increase until the torque value requirement of the coloring prints of the two gear shafts is met, and meanwhile, after the rectangular spring rotates in the positive direction and the negative direction for a plurality of circles, the lower force application device and the driven gear shafts are decomposed to check whether the coloring prints meet the meshing requirement of the two gears or not, and if the coloring prints are not qualified, the rectangular spring is repeatedly assembled to perform coloring check until the coloring prints are qualified.

Secondly, a method for checking coloring of bevel gears is provided, which is suitable for detecting meshing performance of gears of a transmission gearbox in a gas turbine, wherein the transmission gearbox comprises a pair of bevel gears and a driven gear shaft, and the method comprises the following steps:

coloring the bevel gear, and testing by using part or all of the force application devices;

after the test, whether the length or the distance of the impression on the contact of a pair of the bevel teeth reaches a preset value is detected through a probe, if so, the bevel teeth are qualified, and if not, the bevel teeth are not qualified.

The products provided by the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the invention without departing from the inventive concept, and those improvements and modifications also fall within the scope of the claims of the invention.

Claims

1. A force application device for coloring inspection of bevel gears is suitable for detecting the meshing performance of gears of a transmission gear box in a gas turbine, wherein the transmission gear box comprises a pair of bevel gears and a driven gear shaft and is characterized by comprising a spline adapter, a hexagonal nut with a shoulder, a central shaft, a fixed bottom plate and a friction assembly, wherein one end of the central shaft is rotatably connected with the hexagonal nut with the shoulder, and the other end of the central shaft sequentially penetrates through the friction assembly and the fixed bottom plate, is provided with the spline adapter and is fixed with the driven gear shaft through the spline adapter; the fixed baseplate supports the friction assembly, wherein:

2. The force applicator of claim 1 further comprising a controller, a torque meter, and a rotation device, wherein;

the torque meter is arranged on the movable gear box and is in communication connection with the controller, so that the torque or torque parameters of the driven gear shaft are monitored and detected in real time;

the rotating device is connected with the hexagonal nut with the shoulder, and the controller controls the angle of the rotating device for rotating the hexagonal nut with the shoulder according to the torque or torque parameters, so that the friction force generated by the friction assembly is controlled, and the feedback information of the torque meter is stored in real time.

3. The force exerting device of claim 2 wherein the rotating means is a rotating handle or a robot hand, which may be hydraulic or pneumatic.

4. The force applying device of claim 1 or 2 wherein the friction assembly comprises a rectangular spring, an upper spring retainer ring, a lower spring retainer ring, a first friction plate and a second friction plate, the rectangular spring is resisted between the upper spring retainer ring and the lower spring retainer ring, the top surface of the upper spring retainer ring is in contact with the hexagonal shoulder nut, and the bottom surface of the lower spring retainer ring is in contact with the top surface of the fixed base plate;

the central shaft sequentially penetrates through the rectangular spring, the upper spring retainer ring, the lower spring retainer ring, the first friction plate and the second friction plate;

the first friction plate is arranged above the second friction plate, the first friction plate is fixed with the central shaft, and the second friction plate is fixedly connected with the fixed bottom plate;

and rotating the hexagonal nut with the shoulder to compress the rectangular spring, so that the first friction plate and the second friction plate are enlarged, and the torque of the central shaft is increased.

5. The force applying apparatus of claim 4 wherein the friction assembly further comprises a lower friction plate mount and an upper friction plate mount through which the central shaft passes, wherein:

the first friction plate is arranged in the upper friction plate mounting seat, the second friction plate is arranged in the lower friction plate mounting seat, the upper friction plate mounting seat is connected with the central shaft in a radial fixed and axial movable mode, and the lower friction plate mounting seat is fixedly connected with the fixed bottom plate.

6. The force applying apparatus as claimed in claim 5 wherein said lower friction plate mount is smaller or larger than the diameter of said upper friction plate mount.

7. The force exerting device of claim 5 further comprising a thrust bearing having an inner race fixedly attached to the upper friction plate mount and the first friction plate by fasteners for rotation with the central shaft and an outer race fixedly attached to the lower friction plate mount and the second friction plate.

8. A method of inspecting coloring of bevel gears for use in gear meshing performance inspection of gears of a drive gearbox in a gas turbine engine, the drive gearbox including a pair of bevel gears and a driven gear shaft, the method comprising:

coloring the bevel gear and testing using the force applying device of any one of claims 1 to 7;

after the test, whether the length or the distance of the impression on the contact of a pair of the bevel gears reaches a preset value is detected through a probe, if so, the bevel gears are qualified, and if not, the bevel gears are not qualified.