CN112986028A

CN112986028A - Key structure fatigue load testing device for mechanical equipment

Info

Publication number: CN112986028A
Application number: CN202110166486.6A
Authority: CN
Inventors: 徐兰侠
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-06-18

Abstract

The invention discloses a critical structure fatigue load testing device for mechanical equipment, which comprises a testing box, a servo motor, a driving motor, a control box and a compressor, wherein an inner bearing below the testing box is connected with a rotating shaft, the upper end of the rotating shaft is in key connection with a bevel gear group, the left side and the right side of the bevel gear group are respectively connected with a first lead screw and a second lead screw, the outer sides of the first lead screw and the second lead screw are both in threaded connection with a moving block, the upper end of the moving block is provided with an installation plate, the outer side bearing of the installation plate is connected with a turntable, and the servo motor is fixed in the testing box through bolts. This a key structure fatigue load testing arrangement for mechanical equipment, the control link moves, adjusts the position of stifled ball, and the intercommunication mode of the cooling structure that heater strip and the inside heater strip of auxiliary pipe or raceway, water tank and compressor are constituteed in the heater strip of the main pipe in the nimble allotment auxiliary pipe is controlled the inside defeated wind direction of auxiliary pipe, changes the regulation and control to the temperature in the test box.

Description

Key structure fatigue load testing device for mechanical equipment

Technical Field

The invention relates to the technical field related to mechanical equipment, in particular to a fatigue load testing device for a key structure of the mechanical equipment.

Background

Mechanical equipment is indispensable equipment for promoting social rapid development, can replace manual work in a large scale to work, alleviates people's work intensity of labour, and can improve labor efficiency, realizes quick batch processing, production etc. mechanical equipment comprises a series of parts, structure, and after mechanical equipment used for a long time, some key structure can appear phenomenons such as damage, influences the safe, smooth operation of mechanical equipment, need carry out fatigue load test to mechanical equipment's key structure, master the fatigue load volume that can bear.

However, the existing fatigue load testing device still has defects in the using process, the testing mode is single, only one structure can be subjected to fatigue load testing, the using limitation is high, the temperature inside the testing device cannot be adjusted, and the influence of temperature change on the fatigue load of the structure cannot be observed conveniently.

Therefore, we propose a critical structural fatigue load testing device for mechanical equipment in order to solve the above-mentioned proposed problems.

Disclosure of Invention

The invention aims to provide a fatigue load testing device for a key structure of mechanical equipment, which aims to solve the problems that the existing fatigue load testing device in the market has a single testing mode and cannot adjust the temperature in the testing device, wherein the testing mode is provided by the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a key structure fatigue load testing device for mechanical equipment comprises a testing box, a servo motor, a driving motor, a control box and a compressor, wherein a rotating shaft is connected to an inner bearing below the testing box, a bevel gear group is connected to the upper end of the rotating shaft in a key mode, a first lead screw and a second lead screw are respectively connected to the left side and the right side of the bevel gear group, a moving block is in threaded connection with the outer sides of the first lead screw and the second lead screw, a mounting plate is mounted at the upper end of the moving block, a rotary table is connected to the outer side bearing of the mounting plate, the servo motor is fixed inside the testing box through a bolt, the output end of the servo motor is connected with the second lead screw, the driving motor is fixed on the right side of the mounting plate through a bolt, the output end of the driving motor is connected with the rotary table, an adjusting plate is welded to the rear, and the underside of the mounting frame is connected with a pressing plate, the underside of the extension rod is connected with the test box through a compression spring, a locking frame is installed on the rear upper side inside the test box, the control box is fixedly installed on the left side of the test box, an air conveying device is fixed on the inner side of the control box through a bolt, a main pipe is connected to the right side of the air conveying device, a heating wire is installed on the inner side of the main pipe, an auxiliary pipe is connected to the upper side of the main pipe, a water pipe is connected to the inner side of the auxiliary pipe, the compressor is installed on the left upper side of the test box and is connected with a water tank through the water pipe, the water tank is installed on the left side of the test box, a connecting frame penetrates through the front side of the auxiliary pipe, blocking balls are connected to the left end and the right end of the connecting frame, a front side bearing of the connecting frame is connected with an adjusting disc, and the lower side of the air delivery box is connected with an air outlet.

Preferably, the mounting plate is connected with the test box in a sliding manner through a moving block with a convex-shaped side section, and the 2 mounting plates arranged in parallel are symmetrically arranged about the longitudinal center line of the test box.

Preferably, the baffle is made of rubber, the baffle is connected with the auxiliary pipe in a clamping manner, the baffle forms an elastic structure with the adjusting disc through the spring column, and the adjusting disc and the connecting frame form a rotating mechanism.

Preferably, the main face of looking of regulating plate is trapezium structure, and the opposite face of regulating plate and extension rod parallel arrangement each other to the opposite face of regulating plate and extension rod all is smooth column structure.

Preferably, the main plane of looking of mounting bracket is for falling "U" shape structure, and the side plane of mounting bracket is for falling "L" shape structure to the extension rod that the mounting bracket lower extreme symmetry set up passes through compression spring and constitutes elastic construction with the test box.

Preferably, the locking frame comprises a locking screw rod, a locking plate and a sliding block, the middle of the locking frame is in threaded connection with the locking screw rod, the lower end of the locking screw rod penetrates through the upper side face of the locking plate, the rear side of the locking plate is connected with the sliding block, and the side section of the locking frame is of a C-shaped structure.

Preferably, the main section of the locking screw rod is in an i-shaped structure, the locking screw rod and the locking plate form a rotating mechanism, and the locking plate and the locking frame are in sliding connection.

Preferably, the main section of the auxiliary pipe is of a structure in a shape like a Chinese character 'hui', and the inner diameter of the middle part of the inner groove of the lower side wall of the auxiliary pipe is larger than that of the end part.

Compared with the prior art, the invention has the beneficial effects that: the critical structure fatigue load testing device for mechanical equipment,

(1) the position of the mounting plate and the turntable can be adjusted by driving the moving block by the first lead screw and the second lead screw, so that the locking of a related structure is realized, the fatigue load test of the extrusion force of the related structure can be realized by controlling the pressure between the turntables, the fatigue load of the shaft structure during the rotation work under the condition of different extrusion torque forces can be tested by matching the rotation of the turntables, the adjusting plate is moved by moving the mounting plate, so that the height position of the extension rod is controlled, the height position of the pressing plate is further controlled, the related structure below is pressurized by the pressing plate, the pressure fatigue load test of the related structure is realized, the automatic linkage performance is high, the fatigue load test of different structures in various modes can be realized, and the functions are various and the flexibility is strong;

(2) the control link removes, adjust the position of stifled ball, and utilize the baffle, the locking structure that spring post and adjustment disk are constituteed, inject the position of link and stifled ball, the defeated wind direction of the inside of accuse auxiliary pipe, the intercommunication mode of the cooling structure that heater strip and the inside heater strip or raceway of auxiliary pipe in the nimble allotment main pipe, water tank and compressor are constituteed, temperature to the test box in changes the regulation and control, under the condition of simulation different temperatures, to the influence of mechanical equipment's key structure fatigue load, improve the device practicality.

Drawings

FIG. 1 is a schematic view of the main sectional structure of the present invention;

FIG. 2 is a schematic diagram of a rear cross-sectional structure of the test chamber of the present invention;

FIG. 3 is a schematic side sectional view of the test chamber of the present invention;

FIG. 4 is a schematic view of a main section structure of the locking frame of the present invention;

FIG. 5 is a schematic view of the auxiliary pipe of the present invention;

FIG. 6 is a schematic view of a secondary pipe of the present invention in a top-down view;

FIG. 7 is a schematic top view of the locking bracket of the present invention;

FIG. 8 is a schematic side sectional view of a moving block according to the present invention;

fig. 9 is a schematic front view of the present invention.

In the figure: 1. a test box; 2. a rotating shaft; 3. a set of bevel teeth; 4. a first lead screw; 5. a second lead screw; 6. a servo motor; 7. a moving block; 8. mounting a plate; 9. a drive motor; 10. a baffle plate; 11. a turntable; 12. an adjusting plate; 13. a compression spring; 14. an adjusting disk; 15. an extension rod; 16. a mounting frame; 17. pressing a plate; 18. a spring post; 19. a locking frame; 1901. locking the screw rod; 1902. a locking plate; 1903. a slider; 20. blocking the ball; 21. an air conveying box; 22. an air outlet; 23. a connecting frame; 24. a control box; 25. a wind delivery device; 26. a main pipe; 27. a secondary pipe; 28. a water delivery pipe; 29. heating wires; 30. a water tank; 31. a compressor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-9, the present invention provides a technical solution: a key structure fatigue load testing device for mechanical equipment comprises a testing box 1, a rotating shaft 2, a bevel gear group 3, a first screw rod 4, a second screw rod 5, a servo motor 6, a moving block 7, a mounting plate 8, a driving motor 9, a baffle 10, a rotary table 11, an adjusting plate 12, a compression spring 13, an adjusting disc 14, an extension rod 15, a mounting frame 16, a pressing plate 17, a spring column 18, a locking frame 19, a locking screw rod 1901, a locking plate 1902, a sliding block 1903, a ball blocking 20, an air conveying box 21, an air outlet 22, a connecting frame 23, a control box 24, an air conveying device 25, a main pipe 26, an auxiliary pipe 27, a water conveying pipe 28, a heating wire 29, a water tank 30 and a compressor 31, wherein the rotating shaft 2 is connected to an internal bearing below the testing box 1, the bevel gear group 3 is connected to the upper end key of the rotating shaft 2, the first screw rod 4 and the second screw rod 5 are respectively connected to the left side and the right side of the bevel gear group 3, the upper end of the moving block 7 is provided with a mounting plate 8, the outer side bearing of the mounting plate 8 is connected with a turntable 11, a servo motor 6 is fixed in the test box 1 by bolts, the output end of the servo motor 6 is connected with a second lead screw 5, a driving motor 9 is fixed on the right side of the mounting plate 8 by bolts, the output end of the driving motor 9 is connected with the turntable 11, the rear side of the mounting plate 8 is welded with an adjusting plate 12, the lower side of the adjusting plate 12 is attached with an extension rod 15, the extension rod 15 is installed at the lower end of a mounting frame 16, the lower side of the mounting frame 16 is connected with a pressing plate 17, the lower side of the extension rod 15 is connected with the test box 1 by a compression spring 13, the rear upper side in the test box 1 is provided with a locking frame 19, the control box 24 is fixedly installed at the left side of the test box 1, and the heater strip 29 is installed to the inboard of being responsible for 26, the top of being responsible for 26 is connected with auxiliary pipe 27, and the internal connection of auxiliary pipe 27 has conduit 28, compressor 31 installs the upper left side at test box 1, and compressor 31 passes through conduit 28 and is connected with water tank 30, water tank 30 installs the left side at test box 1, link 23 has been run through to the front side of auxiliary pipe 27, and both ends are connected with stifled ball 20 about link 23, the front side bearing of link 23 is connected with adjusting disk 14, and the front side of adjusting disk 14 is connected with baffle 10 through spring post 18, defeated bellows 21 is installed to the top of test box 1, and the downside of defeated bellows 21 is connected with air outlet 22.

In the embodiment, the mounting plate 8 is in sliding connection with the test box 1 through a moving block 7 with a convex-shaped side section, and the 2 mounting plates 8 arranged in parallel are symmetrically arranged about the longitudinal central line of the test box 1, so that the horizontal movement of the mounting plate 8 can be ensured, and the synchronous rotation of the mounting plates 8 caused by the rotation of the first screw rod 4 and the second screw rod 5 is avoided;

the baffle 10 is made of rubber, the baffle 10 is connected with the auxiliary pipe 27 in a clamping manner, the baffle 10 and the adjusting disc 14 form an elastic structure through the spring column 18, and the adjusting disc 14 and the connecting frame 23 form a rotating mechanism, so that the clamping tightness of the baffle 10 and the auxiliary pipe 27 can be improved, the baffle 10 is used for enclosing a through groove in the front side of the auxiliary pipe 27, and the position of the connecting frame 23 is limited;

the main view surface of the adjusting plate 12 is in a trapezoidal structure, the opposite surfaces of the adjusting plate 12 and the extension rod 15 are arranged in parallel, and the opposite surfaces of the adjusting plate 12 and the extension rod 15 are both in a smooth structure, so that the moving friction force between the adjusting plate 12 and the extension rod 15 can be reduced, and the adjusting plate 12 can smoothly adjust and move the position of the extension rod 15;

the main view surface of the mounting frame 16 is of an inverted U-shaped structure, the side view surface of the mounting frame 16 is of an inverted L-shaped structure, and the extension rods 15 symmetrically arranged at the lower end of the mounting frame 16 and the test box 1 form an elastic structure through the compression springs 13, so that the pressing plate 17 can be conveniently mounted and distributed, and the phenomenon of structural jamming is avoided when the height position of the pressing plate 17 is adjusted;

the locking frame 19 comprises a locking screw rod 1901, a locking plate 1902 and a slider 1903, the middle of the locking frame 19 is in threaded connection with the locking screw rod 1901, the lower end of the locking screw rod 1901 penetrates through the upper side face of the locking plate 1902, meanwhile, the rear side of the locking plate 1902 is connected with the slider 1903, the side section of the locking frame 19 is of a C-shaped structure, the design reserves a connection space between the locking frame 19 and related structural components, and the side of the related structural components can be placed on the inner side of the locking frame 19;

the main section of the locking screw 1901 is in an I-shaped structure, the locking screw 1901 and the locking plate 1902 form a rotating mechanism, and the locking plate 1902 and the locking frame 19 are in sliding connection, so that the locking screw 1901 can be smoothly rotated, and the locking plate 1902 is pushed to move by the locking screw 1901 to realize locking;

the main section of the auxiliary pipe 27 is of a 'return' shape structure, and the inner diameter of the middle part of the inner groove of the lower side wall of the auxiliary pipe 27 is larger than that of the end part of the inner groove, so that the direction of air conveying inside the auxiliary pipe 27 can be adjusted, and the air can be flexibly heated or cooled.

The working principle is as follows: when the key structure fatigue load testing device for mechanical equipment is used, firstly, a user stably places the whole device shown in figure 1 in a working area, opens the sealing doors made of transparent glass materials at the front side and the rear side of the testing box 1 as shown in figure 3, when a shaft structure needs to be tested, the shaft structure can be placed between the turntables 11, the servo motor 6 is powered on, the servo motor 6 is controlled to rotate forwards, the servo motor 6 controls the second lead screw 5 connected with the output shaft to rotate, the first lead screw 4 can be controlled to rotate backwards at the same time by matching the transmission of the bevel gear group 3, so that the relative movement of the movable blocks 7 in threaded connection at the outer sides of the first lead screw 4 and the second lead screw 5 is controlled, the mounting plates 8 mounted at the upper ends of the movable blocks 7 are controlled to move relatively, the distance between the turntables 11 is shortened, and the shaft structure is locked between the, the driving motor 9 can be connected with a power supply, the driving motor 9 controls the rotary table 11 to rotate, so that the shaft part locked by the rotary table 11 is controlled to rotate, fatigue load testing can be performed on the shaft structure, the extrusion torque of the rotary table 11 on the shaft structure can be adjusted by adjusting the distance between 2 rotary tables 11, the fatigue load of the shaft structure when the shaft structure works under the condition of different extrusion torque is tested, extrusion stress fatigue testing can be performed on some key structures by using the structure, the servo motor 6 is controlled to rotate reversely by only adjusting the distance between 2 rotary tables 11, the first lead screw 4 and the second lead screw 5 can be controlled to rotate reversely to the steps, the moving block 7 is controlled to move back and back, the distance between the rotary tables 11 is increased, and testing and unlocking of different structures are flexibly realized;

when pressure fatigue test is needed to be carried out on some plate-shaped structures, the related structures can be placed on the lower side of the pressing plate 17, the side of the related structures is located in the locking frame 19, the position of the test box 1, which is opposite to the lower side of the pressing plate 17, is provided with a groove, as shown in figure 4, the locking screw rod 1901 is rotated, the lower end of the locking screw rod 1901 rotates on the inner side of the locking plate 1902, the locking screw rod 1901 moves downwards while rotating in the locking frame 19, the locking plate 1902 is pushed to move downwards, the related structural components are locked, according to the steps, the mounting plate 8 is controlled to move, the adjusting plate 12 arranged on the rear side of the mounting plate 8 presses the extension rod 15 to move downwards, the extension rod 15 presses the compression spring 13 to move downwards smoothly, the mounting frame 16 is controlled to drive the pressing plate 17 to move downwards, the related structural components are pressed to realize side view of pressure fatigue load, and the test of the steps can be carried, the stability in the test box 1 can be adjusted according to the actual requirement, the air conveying device 25 is powered on to convey air, the air passes through the main pipe 26 and the auxiliary pipe 27 in sequence and is conveyed into the air conveying box 21 through a pipeline connected with the auxiliary pipe 27, then the air is sprayed out from the air outlet 22 distributed at the lower side of the air conveying box 21 and enters the test box 1, the heating wire 29 in the main pipe 26 is powered on to heat the conveyed air, the stability in the test box 1 is improved, the heating wire 29 at the right inner side of the auxiliary pipe 27 can be powered on if the temperature needs to be continuously increased subsequently, the primarily heated air passes through the auxiliary pipe 27 again to be heated and enters the test box 1 to continuously increase the internal temperature, if the temperature needs to be reduced, the baffle 10 is pulled forwards by combining with the graph shown in figure 6, the baffle 10 pulls the spring column 18 to move forwards, the clamping between the baffle 10 and the auxiliary pipe 27 is removed, the baffle 10 is rotated by 180 degrees, and the connecting frame 23 is pushed rightwards at the same time, the connecting frame 23 drives the blocking ball 20 to move rightwards, the right blocking ball 20 encloses and blocks a right air inlet inside the auxiliary pipe 27, the pulling of the baffle 10 is released, the spring column 18 controls the baffle 10 to reset, the baffle 10 is clamped into the auxiliary pipe 27, the main pipe 26 is communicated with the left side of the auxiliary pipe 27 at the moment, the compressor 31 is connected with a power supply, the compressor 31 circularly conveys cold water flow in the water tank 30 into the spirally distributed water conveying pipe 28 to cool air, temperature change inside the test tank 1 is realized, and under different conditions, the fatigue load test of a key structure of mechanical equipment is simulated, which is the working process of the whole device.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a key structure fatigue load testing arrangement for mechanical equipment, includes test box (1), servo motor (6), driving motor (9), control box (24) and compressor (31), its characterized in that: the testing device is characterized in that a rotating shaft (2) is connected to an internal bearing below the testing box (1), a conical tooth group (3) is connected to the upper end key of the rotating shaft (2), a first lead screw (4) and a second lead screw (5) are respectively connected to the left side and the right side of the conical tooth group (3), moving blocks (7) are in threaded connection with the outer sides of the first lead screw (4) and the second lead screw (5), a mounting plate (8) is mounted at the upper end of each moving block (7), a turntable (11) is connected to an outer side bearing of the mounting plate (8), a servo motor (6) is fixed in the testing box (1) through bolts, an output end of the servo motor (6) is connected with the second lead screw (5), a driving motor (9) is fixed on the right side of the mounting plate (8) through bolts, the output end of the driving motor (9) is connected with the turntable (11), and the downside laminating of regulating plate (12) has extension rod (15), extension rod (15) are installed at the lower extreme of mounting bracket (16), and the downside of mounting bracket (16) is connected with clamp plate (17), the downside of extension rod (15) is passed through compression spring (13) and is connected with test box (1), and inside back upside of test box (1) installs locking frame (19), control box (24) fixed mounting is in the left side of test box (1), and the inboard bolt fastening of control box (24) has air delivery equipment (25), the right-hand person in charge (26) that is connected with of air delivery equipment (25), and the inboard of person in charge (26) installs heater strip (29), the top of being responsible for (26) is connected with auxiliary pipe (27), and the internal connection of auxiliary pipe (27) has raceway (28), compressor (31) are installed at the upper left side of test box (1), and compressor (31) are connected with water tank (30) through raceway (28), install the left side at test box (1) water tank (30), link (23) have been run through to the front side of auxiliary pipe (27), and both ends all are connected with stifled ball (20) about link (23), the front side bearing of link (23) is connected with adjusting disk (14), and the front side of adjusting disk (14) is connected with baffle (10) through spring post (18), defeated bellows (21) are installed to the top of test box (1), and the downside of defeated bellows (21) is connected with air outlet (22).

2. A critical structural fatigue load testing device for mechanical equipment according to claim 1, wherein: the mounting plate (8) is in sliding connection with the test box (1) through a moving block (7) with a convex-shaped cross section, and the 2 mounting plates (8) which are arranged in parallel are symmetrically arranged relative to the longitudinal center line of the test box (1).

3. A critical structural fatigue load testing device for mechanical equipment according to claim 1, wherein: the baffle (10) is made of rubber, the baffle (10) is connected with the auxiliary pipe (27) in a clamping mode, the baffle (10) and the adjusting disc (14) form an elastic structure through the spring column (18), and meanwhile the adjusting disc (14) and the connecting frame (23) form a rotating mechanism.

4. A critical structural fatigue load testing device for mechanical equipment according to claim 1, wherein: the main visual surface of adjusting plate (12) is trapezium structure, and adjusting plate (12) and extension rod (15) opposite face parallel arrangement each other to the opposite face of adjusting plate (12) and extension rod (15) all is smooth column structure.

5. A critical structural fatigue load testing device for mechanical equipment according to claim 1, wherein: the main plane of looking of mounting bracket (16) is for falling "U" shape structure, and the side view of mounting bracket (16) is for falling "L" shape structure to extension rod (15) that mounting bracket (16) lower extreme symmetry set up constitute elastic construction through compression spring (13) and test box (1).

6. A critical structural fatigue load testing device for mechanical equipment according to claim 1, wherein: the locking frame (19) comprises a locking screw rod (1901), a locking plate (1902) and a sliding block (1903), the middle of the locking frame (19) is in threaded connection with the locking screw rod (1901), the lower end of the locking screw rod (1901) penetrates through the upper side face of the locking plate (1902), the sliding block (1903) is connected to the rear side of the locking plate (1902), and the side section of the locking frame (19) is of a C-shaped structure.

7. A critical structure fatigue load testing device for mechanical equipment according to claim 6, characterized in that: the main section of the locking screw rod (1901) is in an I-shaped structure, the locking screw rod (1901) and the locking plate (1902) form a rotating mechanism, and the locking plate (1902) is in sliding connection with the locking frame (19).

8. A critical structural fatigue load testing device for mechanical equipment according to claim 1, wherein: the main section of the auxiliary pipe (27) is of a 'return' shape structure, and the inner diameter of the middle part of the inner groove of the lower side wall of the auxiliary pipe (27) is larger than that of the end part.