A device for detecting the fatigue life of a mechanical part

Abstract

The utility model discloses a kind of detection devices of mechanical part fatigue life, it is related to part quality detection technical field, including rack, pressure detection seat and hydraulic column, the middle part of rack is slidably connected with pressure detection seat.The detection device of mechanical part fatigue life disclosed in the utility model, by the part in working cavity, dangerous area below pressure detection seat is stably moved out, the automatic exit of part is realized, operator can complete taking out without hand into pressure area, to significantly reduce human operation error and safety risk;After working cavity moves out the edge of workbench, internal part is transported to the track of inclined setting, and it is slid to specified container by the aid of dead weight;Buffering shock mechanism of track and spring main body, can effectively avoid part, especially special-shaped piece or surface not smooth part occurs in the process of conveying jam, ensure the smooth of conveying process.

Description

Technical Field

[0001] This utility model relates to the field of parts quality inspection technology, specifically a device for detecting the fatigue life of mechanical parts. Background Technology

[0002] The fatigue life of a mechanical part refers to the total number of stress cycles that the part can withstand under alternating loads or cyclic stresses until fatigue failure, or the total working time corresponding to a certain cycle frequency. The device for testing the fatigue life of mechanical parts, commonly known as a fatigue testing machine, is a specialized piece of equipment used in a laboratory environment to simulate the alternating loads experienced by mechanical parts in actual operation, thereby accelerating the determination of their fatigue life and studying their fatigue performance.

[0003] When using existing testing equipment to remove mechanical parts, the operator still needs to extend their arm under the pressing test seat to complete the removal work. Being too close to the dangerous working area puts psychological pressure on the operator, making it easy to make operational errors and thus leading to greater safety risks. Utility Model Content

[0004] The purpose of this invention is to provide a device for detecting the fatigue life of mechanical parts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for detecting the fatigue life of mechanical parts, comprising a frame, a pressure detection seat, and a hydraulic column. The pressure detection seat is slidably connected to the middle of the frame, and the hydraulic column is installed at the top of the frame. A worktable is fixedly connected to the bottom of the frame. A base is slidably connected to the middle of the top of the worktable, and working cavities are opened on both sides inside the base. A transmission seat is fixedly connected to the middle of the outer wall of the working cavity. A rotating seat is installed at the bottom of the outer wall of the worktable. An electric push rod is rotatably connected inside the rotating seat. The top output end of the electric push rod is rotatably connected to the transmission seat. The base can move linearly to remove the mechanical parts below the pressure detection seat. The workbench has slide rails welded to both sides of the middle of its outer wall, and the slide rails are slidably connected to rails. The rails are inclined and are used to transport mechanical parts that have been moved away from the top of the workbench.

[0006] As the base moves, it will move the parts in the working chamber away from under the pressure detection seat, so that the operator can remove the parts without getting too close to the danger zone by simply reaching under the pressure detection seat with their arm.

[0007] Preferably, the transmission base has an "L"-shaped structure, and a limiting post is slidably connected inside the transmission base, both sides of the outer wall of the limiting post are fixedly connected with the workbench, the bottom of the hydraulic post is fixedly connected with the pressure detection base, and the base has a "日"-shaped structure.

[0008] The extension and retraction of the electric push rod will drive the transmission base to perform reciprocating linear movement along the limiting post, and the bottom of the electric push rod rotates with the rotating base as the axis.

[0009] Preferably, an extension plate is fixedly connected to one side of the top end of the rail, the rail and the extension plate form an "L"-shaped structure, columns are fixedly connected to both sides of the bottom end of the rail, and a base is slidably connected to the bottom end of the columns.

[0010] Parts are blocked by the extension plate to prevent the parts from sliding off the side during conveying.

[0011] Preferably, a spring body is sleeved on the middle part of the outer wall of the column, the top of the spring body is fixedly connected with the rail, the bottom of the spring body is fixedly connected with the base, and one side of the outer wall of the base is fixedly connected with the workbench.

[0012] The column at the bottom of the rail slides along the base, thereby guiding the rail to move stably and vertically.

[0013] Preferably, the rail, the column and the spring body form an elastic telescopic mechanism, the rails are symmetrically distributed about the vertical midline of the workbench, and the rail is slidably connected with the workbench.

[0014] The downward movement of the rail compresses the spring body, and the reset of the spring body makes the rail vibrate repeatedly, preventing parts from staying on the top of the rail.

[0015] It can be seen from the above that the detection device for fatigue life of mechanical parts provided by the present utility model has the following beneficial effects.

[0016] By smoothly moving the part in the working cavity out of the dangerous area below the pressure detection base, automatic part ejection is realized, and operators can complete part taking without extending their hands into the pressure area, thereby significantly reducing human operation errors and safety risks.

[0017] After the working cavity moves out of the edge of the workbench, the internal parts are conveyed to the inclined rail and slide to a designated container by virtue of self-weight; the buffer vibration mechanism composed of the rail and the spring body can effectively avoid jamming of parts during conveying, especially special-shaped parts or parts with uneven surfaces, and ensure the smoothness of the conveying process. Description of Drawings

[0018] Figure 1 is a schematic diagram of the overall three-dimensional structure of the present utility model; Figure 2is a rear view structural schematic diagram of the utility model; Figure 3 is a top perspective structural schematic diagram of the workbench of the utility model; Figure 4 is a rear view structural schematic diagram of the workbench of the utility model; Figure 5 is a perspective structural schematic diagram of the base of the utility model; Figure 6 is a perspective structural schematic diagram of the rail of the utility model; Figure 7 is a perspective sectional structural schematic diagram of the base body of the utility model; Figure 8 is a perspective structural schematic diagram of the transmission seat of the utility model.

[0019] In the figure: 1, frame; 2, pressure detection seat; 3, hydraulic column; 4, workbench; 5, base; 6, working cavity; 7, transmission seat; 8, electric push rod; 9, limit column; 10, slide rail; 11, rail; 12, extension plate; 13, column; 14, spring main body; 15, base. DETAILED EMBODIMENTS

[0020] Hereinafter, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-8 , the present utility model provides a technical solution: a device for detecting the fatigue life of mechanical parts, comprising a frame 1, a pressure detection seat 2 and a hydraulic column 3. The middle part of the frame 1 is slidably connected with the pressure detection seat 2, the top end of the frame 1 is equipped with the hydraulic column 3, the bottom end of the frame 1 is fixedly connected with a workbench 4, the middle part of the top end of the workbench 4 is slidably connected with a base 5, working cavities 6 are provided on both sides inside the base 5, the middle part of the outer wall of the working cavity 6 is fixedly connected with a transmission seat 7, a rotating seat is installed at the bottom end of the outer wall of the workbench 4, an electric push rod 8 is rotatably connected inside the rotating seat, the top output end of the electric push rod 8 is rotatably connected with the transmission seat 7, and the base 5 can move linearly for moving away the mechanical parts below the pressure detection seat 2; the transmission seat 7 is of an "L"-shaped structure, a limit column 9 is slidably connected inside the transmission seat 7, both sides of the outer wall of the limit column 9 are fixedly connected with the workbench 4, the bottom of the hydraulic column 3 is fixedly connected with the pressure detection seat 2, and the base 5 is of a "日"-shaped structure.

[0022] The workbench 4 has slide rails 10 welded to both sides of the middle of its outer wall, and a track 11 is slidably connected to the outer wall of the slide rails 10. The track 11 is inclined and used to transport mechanical parts that have been moved away from the top of the workbench 4. An extension plate 12 is fixedly connected to one side of the top of the track 11, and the track 11 and the extension plate 12 are in an "L" shape. Columns 13 are fixedly connected to both sides of the bottom of the track 11, and a base 15 is slidably connected to the bottom of the column 13. A spring body 14 is sleeved in the middle of the outer wall of the column 13. The top of the spring body 14 is fixedly connected to the track 11, and the bottom is fixedly connected to the base 15. One side of the outer wall of the base 15 is fixedly connected to the workbench 4. The track 11, the column 13, and the spring body 14 constitute an elastic telescopic mechanism. The track 11 is symmetrically distributed about the vertical midline of the workbench 4, and the track 11 is slidably connected to the workbench 4.

[0023] In practice, the mechanical part to be tested, such as a spring, is placed on top of the workbench 4 using a special fixture. After the parameters are set, the hydraulic column 3 moves down, causing the pressure testing seat 2 to move back and forth along the frame 1. This causes the pressure testing seat 2 to repeatedly press down on the spring, compressing it to and beyond its working stroke once. This is intended to eliminate residual stress from the manufacturing process and bring the spring into a stable working state. When the preset number of cycles is reached, or when the spring breaks or deforms beyond tolerance, the equipment automatically stops. At this point, a macroscopic analysis is performed on the damaged spring to observe the location of the crack initiation and the fracture morphology. If the spring is not damaged, the total length of the measuring instrument is compared with the data before testing, thereby accurately assessing the fatigue performance of the spring and providing crucial data support for product design, quality control, and improvement.

[0024] See Figure 2 , Figure 3 and Figure 4 After the parts inside the working chamber 6 are inspected, the drive transmission seat 7 moves back and forth along the limit post 9. The transmission seat 7 drives the base 5 and the working chamber 6 to move synchronously, thereby smoothly moving the parts inside the chamber out of the danger zone below the pressure detection seat 2, realizing the automatic removal of the parts. The operator does not need to put his hand into the pressure zone to complete the removal of the parts, thus significantly reducing human error and safety risks. See Figure 5 , Figure 6 and Figure 7 When the working chamber 6 moves out of the edge of the worktable 4, the internal parts are transported to the inclined track 11 and slide down to the designated container by their own weight. Meanwhile, the bottom column 13 slides in the base 15, guiding the track 11 to achieve smooth vertical movement. The downward movement of the track 11 compresses the spring body 14, and then the spring body 14 returns to its original position, causing the track 11 to reciprocate and vibrate. This effectively prevents parts from sticking on the surface of the track 11, and the extension plate 12 blocks the parts, preventing them from slipping off the side during transport. Furthermore, the electric push rod 8 automatically removes the parts, completely avoiding the dangerous action of the operator putting their arm under the pressure detection seat 2, fundamentally eliminating the risk of squeezing. In addition, the buffer oscillation mechanism composed of the track 11 and the spring body 14 can effectively prevent parts, especially irregularly shaped parts or parts with rough surfaces, from getting stuck during the conveying process, ensuring a smooth conveying process.

[0025] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A detection device for fatigue life of mechanical parts, comprising a frame (1), a pressure detection seat (2) and a hydraulic column (3), wherein the middle part of the frame (1) is slidably connected with the pressure detection seat (2), the top end of the frame (1) is provided with the hydraulic column (3), and the bottom end of the frame (1) is fixedly connected with a worktable (4), characterized in that: a base (5) is slidably connected to the middle of the top end of the worktable (4), working chambers (6) are provided on both sides inside the base (5), a transmission seat (7) is fixedly connected to the middle of the outer wall of the working chamber (6), a rotating seat is installed at the bottom end of the outer wall of the worktable (4), an electric push rod (8) is rotatably connected inside the rotating seat, the top output end of the electric push rod (8) is rotatably connected with the transmission seat (7), and the base (5) can move linearly for removing the mechanical parts below the pressure detection seat (2); slide rails (10) are welded on both sides of the middle of the outer wall of the worktable (4), a rail (11) is slidably connected to the outer wall of the slide rails (10), and the rail (11) is arranged obliquely for conveying the mechanical parts removed from the top of the worktable (4).

2. The device for detecting the fatigue life of mechanical parts according to claim 1, characterized in that: the transmission seat (7) is of an L-shaped structure, a limit post (9) is slidably connected inside the transmission seat (7), both sides of the outer wall of the limit post (9) are fixedly connected with the worktable (4), the bottom of the hydraulic column (3) is fixedly connected with the pressure detection seat (2), and the base (5) is of a Japanese-shaped structure.

3. The device for detecting the fatigue life of mechanical parts according to claim 2, characterized in that: an extension plate (12) is fixedly connected to one side of the top end of the rail (11), the rail (11) and the extension plate (12) form an L-shaped structure, columns (13) are fixedly connected to both sides of the bottom end of the rail (11), and a base (15) is slidably connected to the bottom ends of the columns (13).

4. The device for detecting the fatigue life of mechanical parts according to claim 3, characterized in that: a spring body (14) is sleeved on the middle of the outer wall of the column (13), the top of the spring body (14) is fixedly connected with the rail (11), the bottom of the spring body (14) is fixedly connected with the base (15), and one side of the outer wall of the base (15) is fixedly connected with the worktable (4).

5. The device for detecting the fatigue life of mechanical parts according to claim 4, characterized in that: the rail (11), the columns (13) and the spring body (14) form an elastic expansion mechanism, the rails (11) are symmetrically distributed about the vertical midline of the worktable (4), and the rail (11) is slidably connected with the worktable (4).

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