Conveniently mounted and demounted diesel steel piston torsional fatigue test bench

Abstract

The utility model discloses a convenient and fast dismounting type diesel steel piston torsional fatigue test board relates to diesel steel piston torsional fatigue test technical field. The utility model discloses a platen, both sides of platen top all are provided with test assembly, both sides of platen surface all are seted up with through slot, and the inner chamber movable joint of through slot has the moving seat. The utility model when loading and unloading diesel steel piston, only need first through electric push rod drive moving seat and top test assembly and move to the appropriate distance, and the both ends of piston are inserted into the inner chamber of positioning frame, then rotate adjusting screw rod can through the thread seat of opposite movement drive the compression plate clamping piston top and bottom, and then rotate fastening screw rod through side clamping plate and complete the front and back clamping, do not need repeatedly manual adjustment bolt tightness, and adjusting screw rod can be positioned through moving clamping piece insertion into the insertion hole after positioning, and the whole operation process is simple and direct, and effectively reduces the physical consumption of operating personnel.

Description

Technical Field

[0001] This utility model belongs to the field of diesel steel piston torsional fatigue testing technology, and in particular relates to a convenient loading and unloading diesel steel piston torsional fatigue testing stand. Background Technology

[0002] In the research and development and production of diesel engines, the diesel steel piston is a core moving component, and its torsional fatigue performance directly determines the service life and operational safety of the engine. Therefore, it is crucial to conduct torsional fatigue testing on diesel steel pistons. Currently, existing diesel steel piston torsional fatigue testing benches on the market typically consist of a test bench base, a torsional drive mechanism, a loading mechanism, a clamping mechanism, and a data acquisition and analysis system. Among these, the clamping mechanism, as a key component for fixing the diesel steel piston, directly affects the accuracy and efficiency of the test. However, existing clamping mechanisms generally suffer from poor ease of installation and removal. The current mainstream clamping method mostly employs a manual clamping structure. Specifically, when installing and fixing the diesel steel piston, the operator needs to first align one end of the diesel steel piston with the fixed end of the clamping mechanism, and then... By rotating multiple manual bolts or wrenches, the position of the clamping block is gradually adjusted so that it fits tightly against the piston end, thus clamping and fixing one end. Then, the same manual operation is repeated on the other end of the diesel steel piston to fix it to the moving end or drive end of the clamping mechanism. During this process, the operator needs to constantly adjust the tightness of the bolts to ensure that the piston is firmly clamped and in the correct test posture. The whole operation process is cumbersome and complicated, which not only consumes a lot of time and physical strength, but also makes it difficult to ensure the consistency of manual operation. It is easy to affect the accuracy of the test results due to uneven clamping force or piston positioning deviation. To address these issues, we have developed a convenient loading and unloading diesel steel piston torsional fatigue testing bench. Utility Model Content

[0003] The purpose of this utility model is to provide a convenient loading and unloading diesel steel piston torsional fatigue testing bench. Through the cooperation of the bench and the testing components, it solves the problem that the clamping structure of the existing diesel steel piston torsional fatigue testing bench is complicated and cannot achieve convenient loading and unloading of diesel steel pistons.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0005] This utility model relates to a convenient loading and unloading diesel steel piston torsional fatigue testing bench, comprising a platform, with testing components provided on both sides of the top of the platform. Through slots are formed on both sides of the platform surface, and a movable seat is movably connected to the inner cavity of each through slot. A fixed plate is fixedly connected to the bottom of the movable seat. Electric push rods are fixedly connected to both sides of the bottom of the platform, and the telescopic shafts of the electric push rods are fixedly connected to the surface of the fixed plate. The testing components include a mounting frame, the bottom of which is movably connected to the top of the platform. A motor is fixedly connected to one side of the mounting frame, and a reducer is provided at the output end of the motor. A coupling is provided on one side of the reducer, and a rotating shaft is provided on one side of the coupling. A positioning frame is fixedly connected to one end of the rotating shaft. Threaded seats are provided at the top and bottom of one side of the inner cavity of the positioning frame, and an adjusting screw is threadedly connected to the inner cavity of the threaded seat. A clamping plate is fixedly connected to one side of the threaded seat.

[0006] The present invention is further configured such that a limiting sleeve is fixedly connected to the top of the positioning frame, a clamping member is movably connected to the inner cavity of the limiting sleeve, and an insertion hole is provided on the top of the surface of the adjusting screw. After the adjusting screw rotates to a designated position in the inner cavity of the limiting sleeve, the clamping member is moved to the insertion rod on one side of it and inserted into the inner cavity of the insertion hole on the surface of the adjusting screw, thereby restricting the adjusting screw and preventing it from rotating due to external force.

[0007] The present invention is further configured such that side clamping plates are movably connected to the front and rear sides of the inner cavity of the positioning frame, and a fastening screw is provided on one side of the side clamping plate. By rotating the two fastening screws, the two fastening screws respectively drive the side clamping plates on their respective sides to move, thereby clamping the front and back of the diesel steel piston through the two side clamping plates, thereby improving the clamping stability of the diesel steel piston.

[0008] The present invention is further configured such that a crossbar is fixedly connected to the inner cavity of the through groove, and the crossbar is connected through the inner cavity of the movable seat. The size of the inner cavity of the movable seat is adapted to the size of the surface of the crossbar, so that the movable seat is more stable when moving on the surface of the crossbar and will not wobble.

[0009] The present invention is further configured such that a rectangular opening is provided on the surface of the mounting bracket, and a protective cover is movably connected to the inner cavity of the rectangular opening. The two protective covers are moved until they close together, thereby protecting the diesel steel piston inside and improving the safety during testing.

[0010] The present invention is further configured such that a load-bearing frame is fixedly connected to the bottom of the platform, and a support frame is fixedly connected to the bottom of the load-bearing frame. The support structure composed of the load-bearing frame and the support frame can stably support the bottom of the platform, so that the diesel steel piston torsional fatigue test bench can be stably placed in the use position.

[0011] The present invention is further configured such that a stabilizing sleeve is fixedly connected to the surface of the reducer, and the bottom of the stabilizing sleeve is fixedly connected to the top of the mounting bracket through a support plate. The stabilizing sleeve supports and limits the reducer, thereby improving its stability.

[0012] The present invention is further configured such that a limiting strip is fixedly connected to the top and bottom of one side of the inner cavity of the positioning frame, and a limiting sleeve is fixedly connected to one side of the threaded seat. The inner cavity of the limiting sleeve is movably connected to the surface of the limiting strip. The limiting sleeve moves with the threaded seat on the surface of the limiting strip. The limiting structure composed of the limiting sleeve and the limiting strip can improve the movement stability of the threaded seat.

[0013] The present invention has the following beneficial effects.

[0014] 1. When loading and unloading diesel steel pistons, this utility model only requires moving the moving seat and top test component to a suitable distance using an electric push rod, inserting both ends of the piston into the inner cavity of the positioning frame, and then rotating the adjusting screw to drive the clamping plate to clamp the top and bottom of the piston through the opposing threaded seats. Then, rotating the fastening screw completes the front and back clamping through the side clamping plate, eliminating the need for repeated manual adjustment of the bolt tightness. After the adjusting screw is positioned, the moving clamping part can be inserted into the insertion hole for limiting. The overall operation process is simple and intuitive, effectively reducing the physical exertion of the operator.

[0015] 2. This utility model provides a reliable guarantee for testing accuracy. On the one hand, the clamping plate driven by the adjusting screw can achieve symmetrical clamping from the top and bottom of the piston, and the threaded transmission can ensure that the clamping force is uniform and controllable. On the other hand, the side clamping plate driven by the fastening screw can further reinforce the piston from the front and back, forming a multi-directional stable clamping, preventing the piston from shifting or loosening during the test. In addition, the limiting design of the adjusting screw can prevent it from changing the clamping state due to external force rotation, further ensuring that the piston is always in the correct test posture throughout the entire test process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0017] Figure 1 A three-dimensional view of a diesel steel piston torsional fatigue testing bench designed for easy loading and unloading.

[0018] Figure 2 A bottom view of a diesel steel piston torsional fatigue test bench designed for easy loading and unloading.

[0019] Figure 3 A cross-sectional view of the positioning frame in a conveniently detachable diesel steel piston torsional fatigue testing rig.

[0020] Figure 4For convenient loading and unloading of diesel steel piston torsional fatigue testing bench Figure 3 A magnified view of a portion of point A in the middle.

[0021] Figure 5 A schematic diagram of the test components in a conveniently detachable diesel steel piston torsional fatigue test bench.

[0022] In the attached diagram: 1. Platform; 2. Test assembly; 3. Through slot; 4. Movable seat; 5. Fixed plate; 6. Electric push rod; 201. Mounting bracket; 202. Motor; 203. Reducer; 204. Coupling; 205. Rotating shaft; 206. Positioning frame; 207. Threaded seat; 208. Adjusting screw; 209. Pressure plate; 7. Limit sleeve; 8. Clamping component; 9. Insertion hole; 10. Protective cover; 11. Load-bearing frame; 12. Support frame. Detailed Implementation

[0023] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1 Please see Figure 1-5 This utility model relates to a convenient loading and unloading diesel steel piston torsional fatigue testing bench, comprising a platform 1, with testing components 2 installed on both sides of the top of the platform 1. Through slots 3 are formed on both sides of the surface of the platform 1, and movable seats 4 are movably connected to the inner cavity of the through slots 3. A fixed plate 5 is fixedly connected to the bottom of the movable seats 4. Electric push rods 6 are fixedly connected to both sides of the bottom of the platform 1, and the telescopic shafts of the electric push rods 6 are fixedly connected to the surface of the fixed plate 5. The testing components 2 include a mounting frame 201, the bottom of which is movably connected to the top of the platform 1. The motor 202 is fixedly connected to one side of the mounting bracket 201. A reducer 203 is provided at the output end of the motor 202. A coupling 204 is provided on one side of the reducer 203. A rotating shaft 205 is provided on one side of the coupling 204. A positioning frame 206 is fixedly connected to one end of the rotating shaft 205. Threaded seats 207 are provided at the top and bottom of one side of the inner cavity of the positioning frame 206. An adjusting screw 208 is threadedly connected to the inner cavity of the threaded seat 207. A pressure plate 209 is fixedly connected to one side of the threaded seat 207.

[0025] Specifically: Activate the electric push rod 6. The telescopic shaft of the electric push rod 6 drives the moving seat 4 to move. The moving seat 4 drives the test component 2 on its top to move towards each other to an appropriate distance. Insert both ends of the diesel steel piston into the inner cavity of the positioning frame 206 respectively. Rotate the adjusting screw 208. The adjusting screw 208 drives the threaded seats 207 on both sides of its surface to move. Because the threads in the inner cavities of the two threaded seats 207 are set in opposite directions, the two threaded seats 207 move towards each other. The threaded seats 207 drive the clamping plate 209 to move and clamp the top and bottom of the diesel steel piston.

[0026] Example 2 Please see Figure 1-5 Based on Embodiment 1, a limiting sleeve 7 is fixedly connected to the top of the positioning frame 206, and a clamping member 8 is movably connected to the inner cavity of the limiting sleeve 7. An insertion hole 9 is opened on the top of the surface of the adjusting screw 208. Side clamps are movably connected to the front and rear sides of the inner cavity of the positioning frame 206. A fastening screw is provided on one side of the side clamp. A crossbar is fixedly connected to the inner cavity of the through groove 3. The crossbar is connected through the inner cavity of the moving seat 4. A rectangular opening is opened on the surface of the mounting frame 201. A protective cover 10 is movably connected to the inner cavity of the rectangular opening. A load-bearing frame 11 is fixedly connected to the bottom of the platform 1. A support frame 12 is fixedly connected to the bottom of the load-bearing frame 11. A stabilizing sleeve is fixedly connected to the surface of the reducer 203. The bottom of the stabilizing sleeve is fixedly connected to the top of the mounting frame 201 through a support plate. A limiting strip is fixedly connected to the top and bottom of one side of the inner cavity of the positioning frame 206. A limiting sleeve is fixedly connected to one side of the threaded seat 207. The inner cavity of the limiting sleeve is movably connected to the surface of the limiting strip.

[0027] Specifically: After the adjusting screw 208 rotates to the designated position within the inner cavity of the limiting sleeve 7, the moving clamping piece 8 is inserted into the inner cavity of the insertion hole 9 on the surface of the adjusting screw 208 by inserting the insertion rod on one side of it. This restricts the adjusting screw 208 and prevents it from rotating due to external force. Rotating the two fastening screws respectively causes the two fastening screws to move the side clamps on one side of them. The two side clamps clamp the front and back of the diesel steel piston, improving the clamping stability of the diesel steel piston. The size of the inner cavity of the moving seat 4 is adapted to the size of the crossbar surface, making the moving seat 4 more stable when moving on the surface of the crossbar. There will be no shaking. Move the two protective covers 10 until they close together to protect the diesel steel piston and improve the safety during testing. The support structure composed of the load-bearing frame 11 and the support frame 12 can stably support the bottom of the platform 1, so that the diesel steel piston torsional fatigue test platform can be stably placed in the use position. The stabilizing sleeve supports and limits the reducer 203 to improve its stability. The limiting sleeve moves with the threaded seat 207 on the surface of the limiting strip. The limiting structure composed of the limiting sleeve and the limiting strip can improve the movement stability of the threaded seat 207.

[0028] The working principle of this utility model is as follows: When the electric push rod 6 is activated, its telescopic shaft drives the moving seat 4 to move. The moving seat 4 then moves the test component 2 on its top towards each other to an appropriate distance, inserting both ends of the diesel steel piston into the inner cavity of the positioning frame 206. Rotating the adjusting screw 208 causes the threaded seats 207 on both sides of its surface to move. Because the threads of the two threaded seats 207 are reversed, they move towards each other. The threaded seats 207 drive the clamping plate 209 to move and clamp the top and bottom of the diesel steel piston. The adjusting screw 208 rotates within the inner cavity of the limiting sleeve 7. After reaching the designated position, the clamping member 8 is moved so that the insert rod on one side is inserted into the inner cavity of the insertion hole 9 on the surface of the adjusting screw 208, thereby restricting the adjusting screw 208 and preventing it from rotating due to external force. Then, the two fastening screws are rotated respectively, and the two fastening screws drive the side clamps on one side to move. The two side clamps clamp the front and back of the diesel steel piston, improving the clamping stability of the diesel steel piston. The motor 202 is turned on, and the motor 202 drives the rotating shaft 205 to rotate through the reducer 203 and the coupling 204. The torsional fatigue of the diesel steel piston is tested by the force of the two sets of test components 2 rotating in opposite directions.

[0029] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A convenient loading and unloading diesel steel piston torsional fatigue testing bench, comprising a platform (1), characterized in that: Test components (2) are provided on both sides of the top of the platform (1). Through slots (3) are provided on both sides of the surface of the platform (1). A movable seat (4) is movably connected to the inner cavity of the through slot (3). A fixed plate (5) is fixedly connected to the bottom of the movable seat (4). Electric push rods (6) are fixedly connected to both sides of the bottom of the platform (1). The telescopic shaft of the electric push rod (6) is fixedly connected to the surface of the fixed plate (5). The test assembly (2) includes a mounting bracket (201), the bottom of which is movably connected to the top of the platform (1). A motor (202) is fixedly connected to one side of the mounting bracket (201). A reducer (203) is provided at the output end of the motor (202). A coupling (204) is provided on one side of the reducer (203). A rotating shaft (205) is provided on one side of the coupling (204). A positioning frame (206) is fixedly connected to one end of the rotating shaft (205). Threaded seats (207) are provided at the top and bottom of one side of the inner cavity of the positioning frame (206). An adjusting screw (208) is threadedly connected to the inner cavity of the threaded seat (207). A clamping plate (209) is fixedly connected to one side of the threaded seat (207).

2. The convenient loading and unloading diesel steel piston torsional fatigue testing bench according to claim 1, characterized in that: The top of the positioning frame (206) is fixedly connected to a limiting sleeve (7), and the inner cavity of the limiting sleeve (7) is movably connected to a clamping member (8). The top of the surface of the adjusting screw (208) is provided with an insertion hole (9).

3. The convenient loading and unloading diesel steel piston torsional fatigue testing bench according to claim 1, characterized in that: The front and rear sides of the inner cavity of the positioning frame (206) are movably connected to side clamps, and a fastening screw is provided on one side of the side clamp.

4. The convenient loading and unloading diesel steel piston torsional fatigue testing bench according to claim 1, characterized in that: A crossbar is fixedly connected to the inner cavity of the through groove (3), and the crossbar is connected through the inner cavity of the movable seat (4).

5. The convenient loading and unloading diesel steel piston torsional fatigue testing bench according to claim 1, characterized in that: The mounting bracket (201) has a rectangular opening on its surface, and a protective cover (10) is movably connected to the inner cavity of the rectangular opening.

6. The convenient loading and unloading diesel steel piston torsional fatigue testing bench according to claim 1, characterized in that: The bottom of the platform (1) is fixedly connected to a load-bearing frame (11), and the bottom of the load-bearing frame (11) is fixedly connected to a support frame (12).

7. The convenient loading and unloading diesel steel piston torsional fatigue testing bench according to claim 1, characterized in that: The surface of the reducer (203) is fixedly connected to a stabilizing sleeve, and the bottom of the stabilizing sleeve is fixedly connected to the top of the mounting bracket (201) through a support plate.

8. The convenient loading and unloading diesel steel piston torsional fatigue testing bench according to claim 1, characterized in that: Limiting strips are fixedly connected to the top and bottom of one side of the inner cavity of the positioning frame (206), and a limiting sleeve is fixedly connected to one side of the threaded seat (207). The inner cavity of the limiting sleeve is movably connected to the surface of the limiting strip.

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