Oil pump compression cycle durability test board
By using an electric cylinder to move the flange cover and a multi-flange clamping structure, combined with a sliding plate for easy installation, the problem of large errors in oil pump durability testing devices has been solved, enabling accurate and efficient multi-sample testing.
Patent Information
- Application Number
- CN202520777433.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-23
AI Technical Summary
Existing oil pump compression cycle durability testing equipment is prone to errors after long-term testing, resulting in inaccurate test results.
An oil pump compression cycle durability test bench was designed. It uses a drive electric cylinder to move the flange cover, and combines multiple flanges and flange clamps to achieve accurate durability testing of the oil pump. The oil pump can be easily installed through a sliding plate structure, and multiple samples can be tested simultaneously.
It improves the accuracy and efficiency of test results, reduces errors from long-term testing, shortens testing time, and makes the test results for multiple samples more accurate.
Smart Images
Figure CN223894372U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of oil pump testing technology, and in particular to an oil pump compression cycle durability test bench. Background Technology
[0002] To ensure the quality of the oil pump, it is necessary to test the compression cycle durability of the oil pump. The test steps are as follows:
[0003] (a) Measure the load on the fuel pump spring in the fully stretched state, at the installation height position, and in the fully compressed state respectively;
[0004] (b) Move the fuel module back and forth 3000 times from the maximum extension displacement (within 5% error) to the minimum compression displacement (within 5% error);
[0005] (c) Move the fuel pump back and forth 100,000 times within a range of ±10 mm of its installation height;
[0006] (d) The displacement cycle count is 1-6 times per minute;
[0007] (e) The sliding mechanism was lubricated at a rate of 1 ml / min during the test;
[0008] (f) After the durability test, the load on the fuel pump spring is measured separately in the fully stretched state, at the installation height position, and in the fully compressed state.
[0009] After the compression durability test, the fuel pump's load force in the fully extended position, installation height position, and fully compressed position remains within ±5% of the original load force, and the fuel pump meets the product appearance requirements.
[0010] The existing technical solutions mentioned above have the following drawbacks: the existing oil pump compression cycle durability testing device is prone to errors after long-term testing, resulting in inaccurate test results. Utility Model Content
[0011] This application provides an oil pump compression cycle durability test bench to make the oil pump compression cycle durability test more accurate.
[0012] The above-mentioned technical objective of this application is achieved through the following technical solution:
[0013] An oil pump compression cycle durability test bench includes a base, a fixing structure for fixing the oil pump is provided on the base, and an electric cylinder bracket is fixedly connected to the base. A drive electric cylinder is fixedly connected to the electric cylinder bracket. The piston rod of the drive electric cylinder faces downward and is located above the oil pump. The piston rod of the drive electric cylinder is connected to a tooling structure. The piston rod of the drive electric cylinder can drive the tooling structure to move. The tooling structure is connected to the flange cover of the oil pump.
[0014] By adopting the above scheme, when a durability test of the oil pump is required, the oil pump body is fixed by a fixed structure, and the flange cover is connected to the tooling structure. Then, the electric cylinder drives the flange cover to move, thereby driving the spring to move and perform a durability test on the oil pump. The spring contraction driven by the electric cylinder is more precise, and the electric cylinder can adjust the frequency. The electric cylinder is less prone to errors when working for a long time, thus making the test results more accurate.
[0015] Optionally, the tooling structure includes a connecting plate, a flange, and a flange clamp. The connecting plate is fixedly connected to the piston rod of the drive cylinder. The flange is located above the flange cover, and the flange clamp is located below the flange cover. The flange clamp includes two semi-circular rings. The flange has circular holes arranged in a circumferential array. The flange clamp has circular holes at positions opposite to the flange. The connecting plate has threaded holes at positions opposite to the flange. Fixing bolts pass through the flange and flange clamp in sequence and are then threaded into the threaded holes.
[0016] By adopting the above scheme, two semicircular rings are placed below the flange cover, and the two semicircular rings are joined together. The flange is then placed on top of the flange cover, and then the fixing bolts are passed through the flange and flange clamp and screwed into the threaded holes, thereby connecting the flange rod to the tooling structure.
[0017] Optionally, three flanges are provided, arranged in a linear array, and three flange clamps are provided, arranged in a linear array.
[0018] By adopting the above method, three oil pump samples can be tested simultaneously, which shortens the testing time and makes the test results more accurate.
[0019] Optionally, a height-increasing frame is provided at the center of the connecting plate. The height-increasing frame includes a height-increasing rod and a height-increasing plate. The height-increasing frame is fixedly connected to the piston rod of the drive electric cylinder. The height-increasing rod is fixedly connected to the edge of the height-increasing frame, and the height-increasing rod is located at the end of the height-increasing plate away from the drive electric cylinder. The end of the height-increasing rod away from the height-increasing plate is fixedly connected to the connecting plate.
[0020] By adopting the above scheme, the drive electric cylinder can be located in the center of the connecting plate without conflicting with the oil pump, making the force on the connecting plate more uniform and the test results more accurate.
[0021] Optionally, multiple guide rods are fixedly connected to the upper surface of the base, and multiple guide holes are opened near the edge of the connecting plate. The guide rods pass through the guide holes, allowing the connecting plate to slide along the guide rods.
[0022] By adopting the above scheme, the guide rod limits and guides the connecting plate, making the movement of the connecting plate smoother.
[0023] Optionally, the upper surface of the base is provided with a slide rail, and a slide plate is slidably connected to the slide rail, with the fixing structure connected to the slide plate.
[0024] By adopting the above solution, the operator can slide the slide plate out from one side of the base, making it easier for the operator to place the oil pump on top of the slide plate and fix it in place by the fixing structure.
[0025] Optionally, the fixing structure includes a fixed clamping plate and a sliding clamping plate. A sliding cavity is provided inside the sliding plate, and a sliding plate is slidably connected inside the sliding cavity. The sliding direction of the sliding plate is perpendicular to the sliding direction of the sliding plate. A sliding hole is provided on the upper surface of the sliding plate, and the sliding hole communicates with the sliding cavity. The fixed plate is fixedly connected to the sliding plate and is fixedly connected to the edge of the sliding hole. The sliding clamping plate is fixedly connected to the sliding plate and extends out of the sliding hole. The sliding plate slides, causing the sliding clamping plate to move closer to or away from the fixed clamping plate. The oil pump body is located between the fixed clamping plate and the sliding clamping plate.
[0026] By adopting the above solution, after the oil pump body is placed between the fixed clamping plate and the sliding clamping plate, the operator can slide the sliding plate to move the sliding clamping plate closer to the fixed clamping plate, thereby fixing the oil pump body and thus achieving the goal of fixing the oil pump body.
[0027] Optionally, the slide plate has an opening on the side connected to the slide rail that communicates with the sliding cavity. The slide plate is fixedly connected to an inclined plate, and a spring is fixedly connected to the side of the slide plate away from the inclined plate. When the slide plate slides into the slide rail, the slide rail contacts the inclined plate and presses the inclined plate into the sliding cavity.
[0028] By adopting the above scheme, when installing the oil pump, first slide the slide plate out along the slide rail. At this time, the spring is at its original length, and the inclined plate extends out on the side of the slide plate opening. Then, place the oil pump body between the fixed clamping plate and the sliding clamping plate. Then, the operator only needs to push the slide plate back along the slide rail. During the movement, the inclined plate is pressed into the sliding cavity by the slide rail, thereby driving the sliding clamping plate to move towards the fixed clamping plate, thus fixing the oil pump.
[0029] In summary, this application has the following technical effects:
[0030] 1. By incorporating a drive cylinder to move the flange cover, the durability testing structure for the oil pump becomes more accurate;
[0031] 2. By setting up three flanges and flange clamps, the test bench can simultaneously perform durability tests on three oil pumps;
[0032] 3. The installation of the oil pump is made easier for operators by incorporating a sliding plate. Attached Figure Description
[0033] Figure 1 This is a schematic diagram of the overall structure of the oil pump in this application;
[0034] Figure 2 This is a schematic diagram of the overall structure of this application;
[0035] Figure 3 This is a partial structural diagram intended to emphasize the structure above the base in this application;
[0036] Figure 4 This is a partial structural diagram of the tooling structure that this application intends to emphasize;
[0037] Figure 5 This application is intended to emphasize the partial structural cross-section of the skateboard area;
[0038] Figure 6 This is a partial structural cross-sectional view intended to emphasize the internal structure of the skateboard in this application.
[0039] In the diagram, 1. Base; 11. Electric cylinder bracket; 12. Guide rod; 13. Slide rail; 2. Fixed structure; 21. Fixed clamping plate; 22. Sliding clamping plate; 3. Drive electric cylinder; 4. Tooling structure; 41. Connecting plate; 42. Flange; 43. Flange clamp; 5. Elevator frame; 51. Elevator rod; 52. Elevator plate; 6. Slide plate; 61. Sliding cavity; 7. Sliding plate; 71. Inclined plate; 8. Oil pump body; 81. Flange cover; 82. Oil pump spring. Detailed Implementation
[0040] The present application will be further described in detail below with reference to the accompanying drawings.
[0041] Reference Figure 1 To facilitate understanding of the scheme, the structure of the hydraulic cylinder is described. The hydraulic cylinder includes a cylinder body and a flange cover 81. The flange cover 81 is connected to a sliding rod. The cylinder body has a sliding hole. The sliding rod is slidably connected inside the sliding rod, and an oil pump spring 82 is sleeved on one of the sliding rods. The test bench mainly tests the cycle durability of the oil pump spring 82.
[0042] Reference Figure 2 and Figure 3An oil pump compression cycle durability test bench includes a base 1, a fixing structure 2 for fixing the oil pump on top of the base 1, and an electric cylinder bracket 11 fixedly connected to the base 1. A drive electric cylinder 3 is fixedly connected to the electric cylinder bracket 11, with its piston rod pointing downwards and positioned above the oil pump. The piston rod of the drive electric cylinder 3 is connected to a tooling structure 4, which can move the tooling structure 4. The tooling structure 4 is connected to a flange cover 81 of the oil pump. When a durability test of the oil pump is required, the oil pump body 8 is fixed by the fixing structure 2, and the flange cover 81 is connected to the tooling structure 4. Then, the drive electric cylinder 3 moves the flange cover 81, thereby moving a spring to perform the durability test on the oil pump. The spring contraction driven by the drive electric cylinder 3 is more precise, and the drive electric cylinder 3 has an adjustable frequency. The drive electric cylinder 3 is less prone to error during long-term operation, thus making the test results more accurate.
[0043] Reference Figure 3 and Figure 4 The tooling structure 4 includes a connecting plate 41, a flange 42, and a flange clamp 43. The connecting plate 41 is fixedly connected to the piston rod of the drive cylinder 3. The flange 42 is located above the flange cover 81, and the flange clamp 43 is located below the flange cover 81. The flange clamp 43 includes two semi-circular rings. The flange 42 has circular holes arranged in a circumferential array. The flange clamp 43 has circular holes at positions opposite to the flange 42. The connecting plate 41 has threaded holes at positions directly opposite the flange 42. Fixing bolts pass through the flange 42 and flange clamp 43 in sequence and are then threaded into the threaded holes. The two semi-circular rings are placed below the flange cover 81 and joined together to cover the flange cover 81. Then, fixing bolts pass through the flange 42 and flange clamp 43 and are screwed into the threaded holes, thereby connecting the flange rod to the tooling structure 4. There are three flanges 42 arranged in a linear array, and three flange clamps 43 arranged in a linear array. It can test three oil pump samples at the same time, which shortens the testing time, and the testing of multiple samples can make the test results more accurate.
[0044] Reference Figure 3A riser frame 5 is provided at the center of the connecting plate 41. The riser frame 5 includes a riser rod 51 and a riser plate 52. The riser frame 5 is fixedly connected to the piston rod of the drive cylinder 3. The riser rod 51 is fixedly connected to the edge of the riser frame 5, and the riser rod 51 is located at the end of the riser plate 52 away from the drive cylinder 3. The end of the riser rod 51 away from the riser plate 52 is fixedly connected to the connecting plate 41. This ensures that the drive cylinder 3 is located at the center of the connecting plate 41 without interfering with the oil pump, making the force on the connecting plate 41 more uniform and the test results more accurate. Multiple guide rods 12 are fixedly connected to the upper surface of the base 1. Multiple guide holes are opened near the edge of the connecting plate 41. The guide rods 12 pass through the guide holes, allowing the connecting plate 41 to slide along the guide rods 12.
[0045] Reference Figure 5 and Figure 6 A slide rail 13 is provided on the upper surface of the base 1, and a slide plate 6 is slidably connected to the slide rail 13. A fixing structure 2 is connected to the slide plate 6. The fixing structure 2 includes a fixing clamp 21 and a sliding clamp 22. A sliding cavity 61 is provided in the slide plate 6, and a sliding plate 7 is slidably connected in the sliding cavity 61. The sliding direction of the sliding plate 7 is perpendicular to the sliding direction of the slide plate 6. A sliding hole is provided on the upper surface of the slide plate 6, and the sliding hole communicates with the sliding cavity 61. The fixing plate is fixedly connected to the slide plate 6 and is fixedly connected to the edge of the sliding hole. The sliding clamp 22 is fixedly connected to the sliding plate 7 and extends out of the sliding hole. The sliding plate 7 slides, causing the sliding clamp 22 to move closer to or away from the fixing clamp 21. The oil pump body 8 is located between the fixing clamp 21 and the sliding clamp 22. The operator can slide the slide plate 6 out on one side of the base 1, making it easier for the operator to place the oil pump on top of the slide plate 6 and fix it with the fixing structure 2. After placing the oil pump body 8 between the fixed clamping plate 21 and the sliding clamping plate 22, the operator can slide the sliding plate 7 to move the sliding clamping plate 22 closer to the fixed clamping plate 21, thereby fixing the oil pump body 8.
[0046] Reference Figure 6 The slide plate 6 has an opening on one side connected to the slide rail 13 that communicates with the sliding cavity 61. The sliding plate 7 is fixedly connected to the inclined plate 71, and a spring is fixedly connected to the side of the sliding plate 7 away from the inclined plate 71. When the slide plate 6 slides into the slide rail 13, the slide rail 13 contacts the inclined plate 71 and presses the inclined plate 71 into the sliding cavity 61. When installing the oil pump, first slide the slide plate 6 out along the slide rail 13. At this time, the spring is at its original length, and the inclined plate 71 extends out from the opening side of the slide plate 6. Then, place the oil pump body 8 between the fixed clamping plate 21 and the sliding clamping plate 22. Then, the operator only needs to push the slide plate 6 back along the slide rail 13. During the movement, the inclined plate 71 is pressed into the sliding cavity 61 by the slide rail 13, thereby driving the sliding clamping plate 22 to move towards the fixed clamping plate 21, thus fixing the oil pump.
[0047] The specific implementation principle of this application is as follows: When a durability test of the oil pump is required, the slide plate 6 is slid out along the slide rail 13, and the oil pump is placed between the fixed clamp 21 and the sliding clamp 22 above the slide plate 6. Then, the slide plate 6 is pushed back along the slide rail 13. During the reset process of the slide plate 6, the slide rail 13 presses the inclined plate 71 into the sliding cavity 61, thereby driving the sliding clamp 22 to move closer to the fixed clamp 21, thus fixing the oil pump with the sliding clamp 22 and the fixed clamp 21. Then, the drive cylinder 3 drives the connecting plate 41 to move down so that the connecting plate 41 passes through the flange cover 81, and places the flange 42 above the flange cover 81. The flange clamp 43 is placed below the flange cover 81 and fixed with bolts. Then, the drive cylinder 3 drives the flange cover 81 to move back and forth, thereby performing a durability test on the oil pump spring 82. Compared with existing testing devices, the test results are more accurate by driving the electric pump.
[0048] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.
Claims
1. A test bench for the compression cycle durability of an oil pump, characterized in that: Includes a base (1), a fixing structure (2) for fixing the oil pump is provided on the base (1), and an electric cylinder bracket (11) is fixedly connected on the base (1). A drive electric cylinder (3) is fixedly connected to the electric cylinder bracket (11). The piston rod of the drive electric cylinder (3) faces downward and is located above the oil pump. The piston rod of the drive electric cylinder (3) is connected to a tooling structure (4). The piston rod of the drive electric cylinder (3) can drive the tooling structure (4) to move. The tooling structure (4) is connected to the flange cover (81) of the oil pump. The tooling structure (4) includes a connecting plate (41), a flange (42), and a flange clamp (43). The connecting plate (41) is fixedly connected to the piston rod of the drive cylinder (3). The flange (42) is located above the flange cover (81), and the flange clamp (43) is located below the flange cover (81). The flange clamp (43) includes two semi-circular rings. The flange (42) has circular holes arranged in a circumferential array. The flange clamp (43) has a circular hole at the position opposite to the flange (42). The connecting plate (41) has a threaded hole at the position opposite to the flange (42). The fixing bolt passes through the flange (42) and the flange clamp (43) in sequence and is then threaded into the threaded hole.
2. The oil pump compression cycle durability test bench according to claim 1, characterized in that: There are three flanges (42) arranged in a linear array, and there are three flange clamps (43) arranged in a linear array.
3. The oil pump compression cycle durability test bench according to claim 2, characterized in that: A height-increasing frame (5) is provided at the center of the connecting plate (41). The height-increasing frame (5) includes a height-increasing rod (51) and a height-increasing plate (52). The height-increasing frame (5) is fixedly connected to the piston rod of the drive electric cylinder (3). The height-increasing rod (51) is fixedly connected to the edge of the height-increasing frame (5), and the height-increasing rod (51) is located at the end of the height-increasing plate (52) away from the drive electric cylinder (3). The end of the height-increasing rod (51) away from the height-increasing plate (52) is fixedly connected to the connecting plate (41).
4. The oil pump compression cycle durability test bench according to claim 1, characterized in that: Multiple guide rods (12) are fixedly connected to the upper surface of the base (1). Multiple guide holes are opened near the edge of the connecting plate (41). The guide rods (12) pass through the guide holes, so that the connecting plate (41) can slide along the guide rods (12).
5. The oil pump compression cycle durability test bench according to claim 1, characterized in that: The upper surface of the base (1) is provided with a slide rail (13), and the slide rail (13) is slidably connected to a slide plate (6). The fixing structure (2) is connected to the slide plate (6).
6. The oil pump compression cycle durability test bench according to claim 5, characterized in that: The fixed structure (2) includes a fixed clamping plate (21) and a sliding clamping plate (22). A sliding cavity (61) is provided in the sliding plate (6). A sliding plate (7) is slidably connected in the sliding cavity (61), and the sliding direction of the sliding plate (7) is perpendicular to the sliding direction of the sliding plate (6). A sliding hole is provided on the upper surface of the sliding plate (6), and the sliding hole communicates with the sliding cavity (61). The fixed plate is fixedly connected to the sliding plate (6) and is fixedly connected at the edge of the sliding hole. The sliding clamping plate (22) is fixedly connected to the sliding plate (7), and the sliding clamping plate (22) passes through the sliding hole. The sliding plate (7) slides and drives the sliding clamping plate (22) to move closer to or away from the fixed clamping plate (21). The oil pump body (8) is located between the fixed clamping plate (21) and the sliding clamping plate (22).
7. The oil pump compression cycle durability test bench according to claim 6, characterized in that: The sliding plate (6) has an opening on the side connected to the sliding cabinet that communicates with the sliding cavity (61). The sliding plate (7) is fixedly connected to the inclined plate (71), and a spring is fixedly connected to the side of the sliding plate (7) away from the inclined plate (71). When the sliding plate (6) slides into the slide rail (13), the slide rail (13) contacts the inclined plate (71) and presses the inclined plate (71) into the sliding cavity (61).