Hydraulic loading execution device
Through the design of the hydraulic loading execution device, the problem of bearing loading capacity lag in the prior art is solved, rapid switching and reversing are achieved, the authenticity of the test and the flexibility of the equipment are improved, and the production cost is reduced.
Patent Information
- Application Number
- CN202323520105.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-22
AI Technical Summary
The existing bearing loading methods have lags in loading force, which leads to the bearing operating status that does not match the actual situation when switching different loading loads, which reduces the authenticity of the test.
A hydraulic loading actuator is designed, including a fuel tank, a one-way valve, an oil pump, a first reversing valve, a second reversing valve, a third reversing valve and a hydraulic cylinder, through the main pipeline, a branch and a proportional pressure reducing valve. Achieve rapid switching and commutation, and integrated loading capacity control.
It realizes quick switching and reversal of loading forces with simple operation, stable and reliable control, reduces equipment production costs, and improves the flexibility and authenticity of the loading system.
Smart Images
Figure CN222277061U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearing loading test, in particular to a hydraulic loading execution device. Background Art
[0002] The loading of bearings is a key factor in assessing whether the bearing's load-bearing capacity meets the use requirements. Currently, there are many ways to load bearings, including hydraulic station loading, electric cylinder loading, oil cylinder loading, etc. These loading methods will cause a certain lag in the loading force in actual use, resulting in the operating state of the bearing being inconsistent with the actual state when switching between different loading loads, reducing the authenticity of the test. Utility Model Content
[0003] In view of the problems existing in the prior art, the utility model provides a hydraulic loading execution device.
[0004] The technical solution adopted by the utility model to solve the above technical problems is: a hydraulic loading execution device, including an oil tank, a one-way valve, an oil pump, a first reversing valve, a second reversing valve, a third reversing valve and a hydraulic cylinder, wherein the oil tank, the one-way valve, the oil pump, the first reversing valve, the second reversing valve, the third reversing valve and the hydraulic cylinder are all connected on a pipeline;
[0005] The pipeline includes a main pipeline, a first branch, a second branch, a third branch, a first branch, a second branch and a third branch. The hydraulic cylinder includes a loading chamber and an unloading chamber. The end of the hydraulic rod of the hydraulic cylinder is the power output end of the hydraulic cylinder, which is used to apply a load to the loaded object.
[0006] The first reversing valve includes a first interface, a second interface and a third interface, the second reversing valve includes a fourth interface, a fifth interface and a sixth interface, and the third reversing valve includes a seventh interface, an eighth interface and a ninth interface;
[0007] One end of the main line is connected to the oil tank, and the other end is connected to the first branch, the second branch, and the third branch. The oil pump and the one-way valve are connected to the main line in sequence. The first interface is connected to the first branch, the second interface and the fourth interface are connected to the first branch, the fifth interface and the unloading chamber are connected to the second branch, the third interface is connected to the second branch, the seventh interface is connected to the third branch, the eighth interface and the loading chamber are connected to the third branch, and the sixth interface and the ninth interface are connected to the oil tank respectively;
[0008] The first branch, the second branch and the third branch are respectively provided with a first proportional pressure reducing valve, a second proportional pressure reducing valve and a third proportional pressure reducing valve, which are respectively connected to the oil tank.
[0009] As a preferred technical solution, the oil pump is driven by a motor.
[0010] As a preferred technical solution, the oil tank is provided with a temperature sensor, an air filter and a liquid level gauge.
[0011] As a preferred technical solution, an oil suction filter is provided on the main pipe inside the oil tank.
[0012] As a preferred technical solution, the connection between the main line and the first branch, the second branch and the third branch is the first connection, and a pipeline filter is provided on the main line between the one-way valve and the first connection.
[0013] As an optimal technical solution, it also includes a sub-pipeline, one end of which is connected to the oil tank, and the other end is connected to the main line. The connection between the sub-pipeline and the main line is the second connection. An overflow valve and an air-cooled cooler are connected in sequence on the sub-pipeline, and a main pressure gauge is provided at the second connection.
[0014] As a preferred technical solution, a first pressure gauge and a first pressure sensor are provided on the first branch between the first interface and the first proportional pressure reducing valve.
[0015] As a preferred technical solution, a second pressure gauge and a second pressure sensor are provided on the second branch between the third interface and the second proportional pressure reducing valve.
[0016] As a preferred technical solution, a third pressure gauge and a third pressure sensor are provided on the third branch between the seventh interface and the third proportional pressure reducing valve.
[0017] The beneficial effects of the present application are as follows: 1. The present application is simple to operate and has stable and reliable control. It can simulate the rapid switching and reversing of different loading forces, and by setting up and superimposing multiple proportional pressure reducing valves and reversing valves, the loading system is integrated to achieve loading force switching in more modes, so that the loading system can be miniaturized, greatly reducing the equipment production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the utility model.
[0019] Markings in the figure: 1. Oil tank, 2. Temperature sensor, 3. Air filter, 4. Liquid level gauge, 5. Oil suction filter, 6. Air-cooled cooler, 7. Oil pump, 8. Motor, 9. Check valve, 10. Pipeline filter, 11. Overflow valve, 12. Main pressure gauge, 13. First proportional pressure reducing valve, 14. Second proportional pressure reducing valve, 15. Third proportional pressure reducing valve, 16. First reversing valve, 17. Second reversing valve, 18. Third reversing valve, 19. Hydraulic cylinder, 191. Unloading chamber, 192. Loading chamber, 20. Force sensor, 21. Main pipeline, 22. First branch, 23. Second branch, 24. Third branch, 25. First branch, 26. Second branch, 27. Third branch, 28. Sub-pipeline. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that in the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0021] See also Figure 1 The embodiment of the utility model provides a hydraulic loading execution device, including an oil tank 1, a one-way valve 9, an oil pump 7, a first reversing valve 16, a second reversing valve 17, a third reversing valve 18 and a hydraulic cylinder 19. The oil tank 1, the one-way valve 9, the oil pump 7, the first reversing valve 16, the second reversing valve 17, the third reversing valve 18 and the hydraulic cylinder 19 are all connected in a pipeline, and the pipeline includes a main pipeline 21, a first branch 22, a second branch 23, a third branch 24, a first branch 25, a second branch 26 and a third branch 27. The hydraulic cylinder 19 includes a loading chamber 192 and an unloading chamber 191. The end of the piston rod of the hydraulic cylinder 19 is the power output end of the hydraulic cylinder 19, which is used to apply a load to the loaded object. The first reversing valve 16 includes a first interface, a second interface and a third interface. The second reversing valve 17 includes a fourth interface, a fifth interface and a sixth interface. The third reversing valve 18 includes a seventh interface. The first interface is connected to the first branch 22, the second branch 23 and the third branch 24. The oil pump 7 and the one-way valve 9 are connected to the main line 21 in sequence. The first interface is connected to the first branch 22, the second interface and the fourth interface are connected to the first branch 25, the fifth interface and the unloading chamber 191 are connected to the second branch 26, the third interface is connected to the second branch 23, the seventh interface is connected to the third branch 24, the eighth interface and the loading chamber 192 are connected to the third branch 27, the sixth interface and the ninth interface are connected to the oil tank 1 respectively, the first branch 22, the second branch 23 and the third branch 24 are respectively provided with a first proportional pressure reducing valve 13, a second proportional pressure reducing valve 14 and a third proportional pressure reducing valve 15, and the first proportional pressure reducing valve 13, the second proportional pressure reducing valve 14 and the third proportional pressure reducing valve 15 are respectively connected to the oil tank 1.
[0022] Among them, a force sensor 20 is provided at the end of the piston rod of the hydraulic cylinder, the oil pump 7 is driven by a motor 8, the one-way valve 9 can prevent the hydraulic oil in the main line 21 from flowing back, and the oil tank 1 is provided with a temperature sensor 2, an air filter 3 and a liquid level gauge 4. An oil suction filter 5 is provided on the main line 21 located inside the oil tank 1. The connection between the main line 21 and the first branch 22, the second branch 23, and the third branch 24 is the first connection. A pipeline filter 10 is provided on the main line 21 between the one-way valve 9 and the first connection. It should be noted that the detailed description of this application is all prior art.
[0023] The present application also includes a sub-pipeline 28, one end of which is connected to the oil tank 1, and the other end is connected to the main pipe 21. The connection between the sub-pipeline 28 and the main pipe 21 is the second connection. The sub-pipeline 28 is sequentially connected with an overflow valve 11 and an air-cooled cooler 6. The second connection is provided with a main pressure gauge 12. The air-cooled cooler 6 is used to cool the hydraulic oil in the sub-pipeline 28. The hydraulic cylinder 7 will generate a large amount of heat during the operation process, which will increase the temperature of the hydraulic oil. In order to avoid the temperature of the hydraulic oil in the oil tank 1 being too high, the air-cooled cooler 6 arranged on the sub-pipeline 28 can cool the hydraulic oil.
[0024] In addition, a first pressure gauge and a first pressure sensor are provided on the first branch 22 between the first interface and the first proportional pressure reducing valve 13, a second pressure gauge and a second pressure sensor are provided on the second branch 23 between the third interface and the second proportional pressure reducing valve 14, and a third pressure gauge and a third pressure sensor are provided on the third branch 24 between the seventh interface and the third proportional pressure reducing valve 15.
[0025] The working method of the present application is as follows: the oil pump 7 is driven by the motor 8 to extract the hydraulic oil from the oil tank 1, and is divided into 4 routes after passing through the oil suction filter 5, the one-way valve 9 and the pipeline filter 10, one of which is the sub-pipeline 28, and the hydraulic oil returns to the oil tank 1 after passing through the overflow valve 11 and the air-cooled cooler 6. The other three routes are the first branch 22, the second branch 23, and the third branch 24. The hydraulic oil flows to these three branches, and three loading modes can be provided, which are the first mode, the second mode and the third mode.
[0026] When the first mode is adopted: the first reversing valve 16 and the second reversing valve 17 do not reverse, and the third reversing valve 18 reverses, that is, the first interface is connected to the second interface, the fourth interface is connected to the fifth interface, and the eighth interface is connected to the ninth interface. The hydraulic oil flows to the first branch 22, and the hydraulic oil flows to the unloading chamber 191 of the hydraulic cylinder 19 through the first proportional pressure reducing valve 13, the first interface, the second interface, the first branch 25, the fourth interface, the fifth interface, and the second branch 26, so that the piston rod of the hydraulic cylinder 19 moves backward. The hydraulic oil in the loading chamber 192 of the hydraulic cylinder 19 is pushed by the piston rod and flows back to the oil tank 1 after passing through the third branch 27, the eighth interface, and the ninth interface. The piston rod carries the force sensor 20 to pull the test bearing backward, and applies a tensile load to the test bearing. The magnitude of the tensile force is controlled by the opening size of the first proportional pressure reducing valve 13.
[0027] When the second mode is adopted: the first reversing valve 16 and the third reversing valve 18 are switched, the second reversing valve 17 is not switched, the second interface is connected to the third interface, the fourth interface is connected to the fifth interface, the eighth interface is connected to the ninth interface, the hydraulic oil flows to the second branch 23, the hydraulic oil flows to the unloading chamber 191 of the hydraulic cylinder 19 through the second proportional pressure reducing valve 14, the third interface, the second interface, the first branch 25, the fourth interface, the fifth interface, and the second branch 26, so that the piston rod of the hydraulic cylinder 19 moves backward, and the hydraulic oil in the loading chamber 192 of the hydraulic cylinder 19 is pushed by the piston rod, and then flows back to the oil tank 1 through the third branch 27, the eighth interface, and the ninth interface. The piston rod carries the force sensor 20 to pull the test bearing backward, and applies a tensile load to the test bearing. The magnitude of the tensile force is controlled by the opening size of the second proportional pressure reducing valve 14.
[0028] When the third mode is adopted: the first reversing valve 16 and the third reversing valve 18 do not reverse, the second reversing valve 17 reverses, the seventh interface is connected to the eighth interface, the fifth interface is connected to the sixth interface, the hydraulic oil flows to the third branch 24, the hydraulic oil flows to the loading chamber 192 of the hydraulic cylinder 19 through the third proportional pressure reducing valve 15, the seventh interface, the eighth interface, and the third branch 27, so that the piston rod of the hydraulic cylinder 19 moves forward, and the hydraulic oil in the unloading chamber 191 of the hydraulic cylinder 19 is pushed by the piston rod and flows back to the oil tank 1 through the second branch 26, the fifth interface, and the sixth interface. The piston rod carries the force sensor 20 to pull the test bearing forward, and applies a compressive load to the test bearing. The size of the pressure is controlled by the opening size of the third proportional pressure reducing valve 15.
[0029] The present application is simple to operate and has stable and reliable control. It can simulate the rapid switching and reversing of different loading forces. By setting and superimposing multiple proportional pressure reducing valves and reversing valves, the loading system is integrated to achieve loading force switching in more modes, so that the loading system can be miniaturized and the equipment production cost is greatly reduced.
[0030] Of course, the present invention is not limited to the above-described implementations. Several other implementations based on the design concept of the present invention are provided below.
[0031] For example, in other embodiments, different from the embodiments described above, a controller is further included, the first reversing valve 16, the second reversing valve 17, and the third reversing valve 18 are all electromagnetic reversing valves, the first proportional pressure reducing valve 13, the second proportional pressure reducing valve 14, and the third proportional pressure reducing valve 15 are all electric proportional pressure reducing valves, and the controller is respectively connected to the first reversing valve 16, the second reversing valve 17, the third reversing valve 18, the first proportional pressure reducing valve 13, the second proportional pressure reducing valve 14, the third proportional pressure reducing valve 15, the motor 8, the force sensor 20, the temperature sensor 2 and the air cooling The cooler 6 is electrically connected, and the controller controls the switching of the first reversing valve 16, the second reversing valve 17, and the third reversing valve 18 in the hydraulic system, so as to change the flow direction of the hydraulic oil, thereby changing the loading direction of the hydraulic cylinder 19, and achieving the purpose of pulling and pressing. The controller controls the opening size of the first proportional pressure reducing valve 13, the second proportional pressure reducing valve 14, and the third proportional pressure reducing valve 15, thereby changing the size of the loading force and realizing the application of different loads. The force value of the loading is read by the force sensor 20 and fed back to the controller, thereby achieving closed-loop control of the loading force.
[0032] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model fall within the protection scope of the present utility model.
Claims
1. A hydraulic loading actuator, characterized in that: It includes an oil tank, a one-way valve, an oil pump, a first reversing valve, a second reversing valve, a third reversing valve and a hydraulic cylinder, wherein the oil tank, the one-way valve, the oil pump, the first reversing valve, the second reversing valve, the third reversing valve and the hydraulic cylinder are all connected in a pipeline; The pipeline includes a main pipeline, a first branch, a second branch, a third branch, a first branch, a second branch and a third branch. The hydraulic cylinder includes a loading chamber and an unloading chamber. The end of the piston rod of the hydraulic cylinder is the power output end of the hydraulic cylinder, which is used to apply a load to the loaded object. The first reversing valve includes a first interface, a second interface and a third interface, the second reversing valve includes a fourth interface, a fifth interface and a sixth interface, and the third reversing valve includes a seventh interface, an eighth interface and a ninth interface; One end of the main line is connected to the oil tank, and the other end is connected to the first branch, the second branch, and the third branch. The oil pump and the one-way valve are connected to the main line in sequence. The first interface is connected to the first branch, the second interface and the fourth interface are connected to the first branch, the fifth interface and the unloading chamber are connected to the second branch, the third interface is connected to the second branch, the seventh interface is connected to the third branch, the eighth interface and the loading chamber are connected to the third branch, and the sixth interface and the ninth interface are connected to the oil tank respectively; The first branch, the second branch and the third branch are respectively provided with a first proportional pressure reducing valve, a second proportional pressure reducing valve and a third proportional pressure reducing valve, which are respectively connected to the oil tank.
2. A hydraulic loading execution device according to claim 1, characterized in that: The oil pump is driven by a motor.
3. A hydraulic loading execution device according to claim 1, characterized in that: The oil tank is provided with a temperature sensor, an air filter and a liquid level gauge.
4. A hydraulic loading execution device according to claim 1, characterized in that: An oil suction filter is arranged on the main pipe and inside the oil tank.
5. The hydraulic loading execution device according to claim 1, characterized in that: The connection point between the main line and the first branch line, the second branch line and the third branch line is the first connection point, and a pipeline filter is provided on the main line between the one-way valve and the first connection point.
6. A hydraulic loading execution device according to claim 5, characterized in that: It also includes a sub-pipeline, one end of which is connected to the oil tank, and the other end is connected to the main pipeline. The connection between the sub-pipeline and the main pipeline is the second connection. The sub-pipeline is connected in sequence with an overflow valve and an air-cooled cooler, and the second connection is provided with a main pressure gauge.
7. The hydraulic loading execution device according to claim 1, characterized in that: A first pressure gauge and a first pressure sensor are provided on the first branch line between the first interface and the first proportional pressure reducing valve.
8. The hydraulic loading execution device according to claim 1, characterized in that: A second pressure gauge and a second pressure sensor are provided on the second branch line between the third interface and the second proportional pressure reducing valve.
9. The hydraulic loading execution device according to claim 1, characterized in that: A third pressure gauge and a third pressure sensor are provided on the third branch between the seventh interface and the third proportional pressure reducing valve.