Rotary fatigue test bench

Abstract

The utility model discloses a rotary fatigue test bench, which relates to the technical field of fatigue test benches and comprises a base, the top of the base is connected with a test bench body through a height adjusting mechanism, and the test bench body is provided with a multi-station fatigue test mechanism. The multi-station fatigue test mechanism comprises four rotary fatigue test assemblies and a driving assembly, and each rotary fatigue test assembly comprises a rotary tray, a rotary shaft, a transmission gear, a sliding groove, a first two-way screw, two T-shaped centering blocks and two V-shaped positioning blocks. According to the utility model, the multi-station fatigue test mechanism is arranged, so that the rotary fatigue test work of a plurality of shaft workpieces can be completed at one time, the working efficiency is improved, and the fatigue test work of a large batch of shaft workpieces can be better adapted; and the height adjusting mechanism is arranged, so that the use height of the whole fatigue test bench can be flexibly adjusted, and the fatigue test bench can be well suitable for testers with different heights to use.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue test benches, in particular to a rotary fatigue test bench. Background Art

[0002] The rotational fatigue test of shaft parts is mainly to simulate the repeated stress caused by the rotational motion that shaft parts are subjected to in actual use, so as to evaluate their reliability and durability under long-term work.

[0003] However, the existing rotary fatigue test bench cannot complete the rotary fatigue test of multiple shaft workpieces at one time, the work efficiency is relatively low, and it cannot be well adapted to the fatigue test of large quantities of shaft workpieces. In addition, the use height of the rotary fatigue test bench cannot be flexibly adjusted, which makes it difficult to adapt to the use of test personnel of different heights. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a rotary fatigue test bench.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A rotary fatigue test bench comprises a base, the top of the base is connected to a test bench body through a height adjustment mechanism, and a multi-station fatigue test mechanism is arranged on the test bench body, and the multi-station fatigue test mechanism comprises four rotary fatigue test assemblies and a drive assembly;

[0007] The four rotary fatigue test assemblies all include a rotating tray, a rotating shaft concentrically welded to the outer wall of the bottom of the rotating tray, a transmission gear fixedly mounted on the rotating shaft, a slide groove opened on the top of the rotating tray, a first bidirectional screw rotatably installed in the slide groove, two T-shaped centering blocks symmetrically threaded on two opposite threaded ends of the first bidirectional screw, and two V-shaped positioning blocks symmetrically fixedly connected to the outer walls of the tops of the two T-shaped centering blocks.

[0008] Preferably, a hand-rotating block is welded to the outer wall of one end of the first bidirectional screw, the bottom end of the rotating shaft is connected to the top inner wall of the test bench body through a bearing, and the outer walls of the two T-shaped centering blocks are slidably connected to the inner wall of the slide groove.

[0009] Preferably, the driving assembly includes a servo motor fixedly mounted on the central outer wall of the bottom of the test bench body and a driving gear fixedly sleeved on the output shaft of the servo motor.

[0010] Preferably, the output shaft of the servo motor passes through the center of the test bench body, and the four transmission gears are all meshed with the driving gear.

[0011] Preferably, the height adjustment mechanism includes two bearing seats fixedly connected to the outer wall of the top of the base in sequence, a second bidirectional screw rotatably mounted on the two bearing seats, two sliding blocks symmetrically threaded on two opposite threaded ends of the second bidirectional screw, two connecting rods symmetrically hinged on the top of the two sliding blocks, and a guide groove opened on the top of the base.

[0012] Preferably, the outer walls of the two sliding blocks are slidably connected to the inner walls of the guide groove, and the top ends of the two connecting rods are hinged to the bottom of the test bench body.

[0013] Preferably, a handwheel is fixedly connected to the outer wall of one end of the second bidirectional screw, four telescopic guide rods are fixedly connected to the top outer wall of the base, and the telescopic ends of the four telescopic guide rods are sequentially fixed to the outer walls of the bottom four corners of the test bench body.

[0014] The beneficial effects of the utility model are:

[0015] 1. It is equipped with a multi-station fatigue test mechanism, which can complete the rotary fatigue test of multiple shaft workpieces at one time, improve the work efficiency, and facilitate better adaptation to the fatigue test of large quantities of shaft workpieces. It is controlled by the same drive source, which effectively improves the utilization rate of the motor and reduces the use and maintenance costs;

[0016] 2. A height adjustment mechanism is provided to facilitate flexible adjustment of the operating height of the entire fatigue test bench, which can well adapt to the use of test personnel of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall front view of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic structural diagram of the utility model as a whole viewed from the front;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the meshing area of ​​four transmission gears and one driving gear in the utility model;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the top area of ​​the rotating tray in the utility model;

[0021] Figure 5 It is a three-dimensional enlarged structural schematic diagram of the height adjustment mechanism in the utility model.

[0022] In the figure: 1. base; 2. test bench body; 3. rotating tray; 4. rotating shaft; 5. transmission gear; 6. slide groove; 7. first bidirectional screw; 8. T-shaped centering block; 9. V-shaped positioning block; 10. hand rotation block; 11. servo motor; 12. driving gear; 13. bearing seat; 14. second bidirectional screw; 15. sliding block; 16. connecting rod; 17. guide groove; 18. hand wheel; 19. telescopic guide rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Example 1, reference Figure 1-4 , a rotary fatigue test bench, comprising a test bench body 2, on which a multi-station fatigue test mechanism is arranged, the multi-station fatigue test mechanism comprising four rotary fatigue test assemblies and a drive assembly;

[0025] In this embodiment, the four rotary fatigue test assemblies each include a rotary tray 3;

[0026] It also includes a rotating shaft 4 and a transmission gear 5; the rotating shaft 4 is concentrically welded to the bottom outer wall of the rotating tray 3, the bottom end of the rotating shaft 4 is connected to the top inner wall of the test bench body 2 through a bearing, and the transmission gear 5 is fixedly sleeved on the rotating shaft 4;

[0027] It also includes a slide 6 and a first bidirectional screw 7. The slide 6 is opened on the top of the rotating tray 3. The first bidirectional screw 7 is rotatably installed in the slide 6. A hand-rotating block 10 is welded to the outer wall of one end of the first bidirectional screw 7.

[0028] It also includes two T-shaped centering blocks 8 and two V-shaped positioning blocks 9. The two T-shaped centering blocks 8 are symmetrically screwed on two opposite threaded ends of the first bidirectional screw 7. The outer walls of the two T-shaped centering blocks 8 are slidably connected to the inner wall of the slide groove 6. The two V-shaped positioning blocks 9 are symmetrically fixedly connected to the top outer walls of the two T-shaped centering blocks 8.

[0029] In this embodiment, the driving assembly includes a servo motor 11 fixedly mounted on the outer wall of the bottom center of the test bench body 2 and a driving gear 12 fixedly sleeved on the output shaft of the servo motor 11. The output shaft of the servo motor 11 passes through the center of the test bench body 2, and the four transmission gears 5 are all meshed with the driving gear 12.

[0030] In the specific implementation of this embodiment: first, the shaft workpiece that needs to be fatigue tested is placed on the rotating tray 3, and then the first bidirectional screw 7 is driven to rotate by the hand-rotating block 10, and then under the limit of the slide slot 6, the two T-shaped centering blocks 8 threadedly connected with the first bidirectional screw 7 will drive the two V-shaped positioning blocks 9 to center and move closer, so that the shaft workpieces of different specifications can be effectively clamped and fixed. According to the above method, four shaft workpieces can be fixed to four rotating trays 3;

[0031] Secondly, the driving gear 12 is controlled to rotate by the servo motor 11, and then the four transmission gears 5 meshing with the driving gear 12 will simultaneously drive the four rotating trays 3 connected to the top of the four rotating shafts 4 to rotate, so that the rotational fatigue test of multiple shaft workpieces can be completed at one time, which improves the work efficiency and facilitates better adaptation to the fatigue test of large quantities of shaft workpieces. Moreover, it is controlled by the same driving source, which effectively improves the utilization rate of the motor and reduces the use and maintenance costs.

[0032] Example 2, reference Figure 1-2 and Figure 5 This embodiment is optimized on the basis of the embodiment 1, specifically: a rotary fatigue test bench, further comprising a base 1 and a height adjustment mechanism, the height adjustment mechanism comprising:

[0033] Two bearing seats 13 and a second bidirectional screw 14. The two bearing seats 13 are fixedly connected to the top outer wall of the base 1. The second bidirectional screw 14 is rotatably mounted on the two bearing seats 13. A hand wheel 18 is fixedly connected to the outer wall of one end of the second bidirectional screw 14.

[0034] Two sliding blocks 15 and a guide groove 17. The two sliding blocks 15 are symmetrically screwed to two opposite threaded ends of the second bidirectional screw 14. The guide groove 17 is opened at the top of the base 1. The outer walls of the two sliding blocks 15 are slidably connected to the inner wall of the guide groove 17.

[0035] Two connecting rods 16, the two connecting rods 16 are symmetrically hinged to the tops of the two sliding blocks 15, and the top ends of the two connecting rods 16 are hinged to the bottom of the test bench body 2;

[0036] Furthermore, four telescopic guide rods 19 are fixedly connected to the top outer wall of the base 1, and the telescopic ends of the four telescopic guide rods 19 are fixed to the outer walls of the four corners of the bottom of the test bench body 2 in sequence. Through the telescopic guiding effect of the four telescopic guide rods 19, the stability of the lifting movement of the test bench body 2 can be ensured;

[0037] During the specific implementation of this embodiment: the second bidirectional screw 14 is driven to rotate forward or reversely by the hand wheel 18, and under the guidance of the guide groove 17, the two sliding blocks 15 threadedly connected with the second bidirectional screw 14 will move away from or toward each other and drive the two connecting rods 16 to move continuously, and then under the telescopic guidance of the four telescopic guide rods 19, the test bench body 2 can stably perform lifting and lowering movements in the vertical direction, which facilitates the flexible adjustment of the use height of the entire fatigue test bench and can well adapt to the use of test personnel of different heights.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rotary fatigue test bench, comprising a base (1), characterized in that: The top of the base (1) is connected to a test bench body (2) via a height adjustment mechanism, and a multi-station fatigue test mechanism is provided on the test bench body (2), and the multi-station fatigue test mechanism comprises four rotary fatigue test assemblies and one drive assembly; The four rotary fatigue test assemblies each comprise a rotary tray (3), a rotating shaft (4) coaxially welded to the outer wall of the bottom of the rotary tray (3), a transmission gear (5) fixedly mounted on the rotating shaft (4), a slide groove (6) provided at the top of the rotary tray (3), a first bidirectional screw (7) rotatably mounted in the slide groove (6), two T-shaped centering blocks (8) symmetrically screwed to two opposite threaded ends of the first bidirectional screw (7), and two V-shaped positioning blocks (9) symmetrically fixedly connected to the outer walls of the tops of the two T-shaped centering blocks (8).

2. A rotary fatigue test bench according to claim 1, characterized in that: A hand-rotating block (10) is welded to the outer wall of one end of the first bidirectional screw (7), the bottom end of the rotating shaft (4) is connected to the top inner wall of the test bench body (2) via a bearing, and the outer walls of the two T-shaped centering blocks (8) are both slidably connected to the inner wall of the slide groove (6).

3. The rotary fatigue test bench according to claim 1, characterized in that: The driving assembly comprises a servo motor (11) fixedly mounted on the central outer wall at the bottom of the test bench body (2) and a driving gear (12) fixedly sleeved on the output shaft of the servo motor (11).

4. A rotary fatigue test bench according to claim 3, characterized in that: The output shaft of the servo motor (11) passes through the center of the test bench body (2), and the four transmission gears (5) are all meshed with the driving gear (12).

5. The rotary fatigue test bench according to claim 1, characterized in that: The height adjustment mechanism comprises two bearing seats (13) fixedly connected to the outer wall of the top of the base (1) in sequence, a second bidirectional screw (14) rotatably mounted on the two bearing seats (13), two sliding blocks (15) symmetrically screwed on two opposite threaded ends of the second bidirectional screw (14), two connecting rods (16) symmetrically hinged on the tops of the two sliding blocks (15), and a guide groove (17) opened on the top of the base (1).

6. A rotary fatigue test bench according to claim 5, characterized in that: The outer walls of the two sliding blocks (15) are slidably connected to the inner walls of the guide groove (17), and the top ends of the two connecting rods (16) are hinged to the bottom of the test bench body (2).

7. The rotary fatigue test bench according to claim 5, characterized in that: A hand wheel (18) is fixedly connected to the outer wall of one end of the second bidirectional screw (14), four telescopic guide rods (19) are fixedly connected to the top outer wall of the base (1), and the telescopic ends of the four telescopic guide rods (19) are fixed in sequence to the outer walls of the four corners of the bottom of the test bench body (2).

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