Underwater electric push rod test platform

Abstract

The utility model discloses an underwater electric push rod test platform. Comprising a hydraulic control device, a hydraulic cylinder, a to-be-detected electric push rod, a guide device, a detection device and a control system. The hydraulic control device is connected with the hydraulic cylinder; the hydraulic cylinder is fixed on the test board through an oil cylinder base; guide devices are arranged on two sides of a piston rod of the hydraulic cylinder; the detection device comprises a first detection module and a second detection module; the displacement sensors are respectively used for detecting displacement of the to-be-detected electric push rod under push-pull force; the push-pull force applied to the to-be-detected electric push rod is detected; the first detection module and the second detection module are connected with the signal input end of the control system; according to the push-pull force testing device, the hydraulic system is matched, hydraulic pressure serves as a power source to drive the hydraulic cylinder to test the push-pull force of the to-be-tested push rod, and the pressure borne by the electric push rod and the generated displacement can be synchronously obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater pushers, in particular to an underwater electric push rod testing platform. Background Art

[0002] With recent technological advancements and deepening exploration of the ocean, demand for various underwater equipment has continued to increase. Underwater electric linear actuators, as a key underwater device, have experienced rapid development in recent years. Underwater electric linear actuators are electrically driven linear actuators that operate underwater. During the design and production process of underwater electric linear actuators, testing of various key parameters is necessary to improve safety and reliability, accurately measure various parameters, and ensure product quality. Thrust, tension, self-locking force, stroke, current, and power are all important technical indicators that require testing. With the ever-expanding market demand, actuators of varying models and parameters are being manufactured. However, existing testing equipment suffers from limited performance. Most testing equipment uses counterweights to test the thrust of the actuator. When testing high-thrust actuators, the counterweights can weigh 1-5 tons, resulting in high testing costs and safety concerns. Furthermore, a single device cannot simultaneously test both thrust and tension, requiring separate, large-scale tooling or testing equipment for testing. Stroke testing is often done manually using a ruler, resulting in significant errors. Furthermore, different stroke lengths require different test equipment specifications, which is inefficient. Furthermore, expensive test fixtures are often required for different strokes and thrusts. This significantly reduces testing efficiency and increases production costs.

[0003] The traditional weight-type push rod testing method has a cumbersome testing process and cannot test the thrust and tension at the same time. It requires the preparation of different tooling and repeated disassembly and assembly of the push rod to be tested for thrust and tension tests. The test data is not intuitive and the stroke cannot be accurately detected. In another spring-plus-push-pull force sensor testing method, the test data is inaccurate and can only measure the push rod load over a short distance. It is impossible to perform constant load detection throughout the entire stroke, and a set of testing equipment cannot adapt to push rods with different strokes, thrusts, and tensions at the same time. Utility Model Content

[0004] Therefore, the purpose of the present invention is to provide an underwater electric push rod testing platform. Through a supporting hydraulic system, the hydraulic pressure is used as the power source to drive the hydraulic cylinder to test the push and pull force of the push rod to be tested, and the pressure and displacement of the electric push rod can be obtained simultaneously.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an underwater electric push rod test platform, including a hydraulic control device, a hydraulic cylinder, an electric push rod to be tested, a guide device, a detection device and a control system;

[0006] The hydraulic control device is connected to the hydraulic cylinder; the hydraulic cylinder is fixed on the test bench by the cylinder base; guide devices are provided on both sides of the piston rod of the hydraulic cylinder;

[0007] The detection device includes a first detection module and a second detection module; the first detection module is used to detect the displacement of the electric push rod to be tested when it is subjected to a push or pull force; the second detection module is used to detect the push or pull force applied to the electric push rod to be tested;

[0008] The piston rod is connected to the second detection module through the first flange, and the second detection module is connected to the electric push rod to be tested; the other end of the electric push rod to be tested is fixed on the test bench;

[0009] The first detection module and the second detection module are connected to the signal input end of the control system; the signal output end of the control system is connected to the hydraulic control device.

[0010] Further preferably, the guide device includes guide rods arranged on both sides of the piston rod and guide plates passing through the guide rods; one end of the guide device is fixed to the cylinder base, and the other end is fixed to the guide base; the guide base is fixed to the test bench.

[0011] Further preferably, a ball guide sleeve is sleeved on the outside of the guide rod, the ball guide sleeve is fixedly mounted on the guide plate, and the guide rod passes through the ball guide sleeve and is fixed to the guide base.

[0012] Further preferably, the first detection module includes a displacement grating ruler and a detection head; the detection head is arranged on the guide plate of the guide device; when the guide plate is pushed back and forth by the piston rod, the detection head arranged on the guide plate detects the distance moved on the displacement grating ruler.

[0013] Further preferably, when the second detection module is connected to the electric push rod to be tested, it also includes a second flange, a connecting earring and an adjustable ear shaft arranged in sequence between the second detection module and the electric push rod to be tested; the second detection module is arranged on one side of the guide plate, and the second flange is arranged on the other side of the guide plate, the connecting earring is fixed in the middle of the second flange, the connecting earring is connected to the adjustable ear shaft, and the adjustable ear shaft is connected to the electric push rod to be tested.

[0014] Further preferably, the other end of the electric push rod to be tested is connected to the tail earring and the push rod tail stock in sequence; and the push rod tail stock is fixedly installed on the test bench.

[0015] Further preferably, the push rod tailstock includes a movable seat plate and a seat body; the tail earring is fixedly mounted on the movable seat plate, and the movable seat plate is mounted on the seat body.

[0016] Further preferably, a flat key is provided on the bottom of the seat body, and a plurality of key slots are provided on the test bench; the flat key on the bottom of the seat body cooperates with the key slots to achieve positioning of the push rod tailstock on the test bench.

[0017] Further preferably, four threaded holes are respectively provided at the four vertices of the base body, and the base body is fixed on the test bench by bolts.

[0018] The underwater electric push rod testing platform disclosed in this application has at least the following advantages compared to the prior art:

[0019] The test platform provided by this application has a wide range of adaptability, a large push-pull force test range, and a long test stroke. A single device can be used to test push rods of different push-pull forces and different stroke lengths. Furthermore, the device can perform all factory inspections on the underwater electric push rod being tested after a single installation, including stroke testing, thrust testing, tension testing, thrust self-locking force testing, and tension self-locking force testing. By integrating various high-precision detection sensors, the measured values ​​are accurate and stable. This not only solves the problems of traditional testing methods, such as heavy workload, multiple test equipment, and the lack of universality of various types of test equipment, but also the need to repeatedly disassemble and assemble the underwater push rod being tested for thrust and tension testing, unstable test values, and the inability to test multiple underwater electric push rods with a single device.

[0020] This application uses a supporting hydraulic system to drive the hydraulic cylinder to test the push and pull force of the push rod under test using hydraulic pressure as the power source, and can simultaneously obtain the pressure and displacement of the electric push rod. The test process is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure 2 for Figure 1 The structural diagram of part A of the utility model is shown.

[0023] Figure 3 This is a schematic diagram of the installation position of the seat body in this utility model.

[0024] Figure 4 It is a longitudinal cross-sectional view of the installation position of the seat body in the utility model.

[0025] 1. Hydraulic control device; 2. Hydraulic cylinder; 3. Cylinder base; 4. Guide rod; 5. Displacement grating scale; 6. First flange; 7. Ball guide bushing; 8. Push-pull force sensor; 9. Guide plate; 10. Second flange; 11. Connecting earring; 12. Adjustable ear shaft; 13. Guide base; 14. Test bench; 15. Electric push rod to be tested; 16. Tail earring; 17. Push rod tailstock; 18. Movable seat plate; 19. Base body; 20. First display screen; 21. Second display screen; 22. Control system; 23. Flat key. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below through the accompanying drawings and specific implementation methods.

[0027] like Figure 1 As shown, an underwater electric push rod testing platform provided by an embodiment of the present invention includes a hydraulic control device 1, a hydraulic cylinder 2, an electric push rod to be tested 15, a guide device, a detection device and a control system 22;

[0028] The hydraulic control device 1 is connected to the hydraulic cylinder 2; the hydraulic cylinder 2 is fixed on the test bench using the cylinder base 3; guide devices are provided on both sides of the piston rod of the hydraulic cylinder 2;

[0029] like Figure 2 As shown, the guide device includes guide rods 4 arranged on either side of the piston rod and guide plates 9 extending through the guide rods. One end of the guide device is fixed to the cylinder base 3, and the other end is fixed to a guide base 13. The guide base 13 is fixed to a test bench 14. A ball guide bushing 7 is sleeved around the guide rods 4, which is fixedly mounted on the guide plates 9. The guide rods 4 pass through the ball guide bushing 7 and are then fixed to the guide base 13.

[0030] The detection device includes a first detection module and a second detection module; the first detection module is used to detect the displacement of the electric push rod 15 to be tested when it is subjected to a push or pull force; the second detection module is used to detect the push or pull force applied to the electric push rod 15 to be tested; the second detection module uses a push or pull force sensor 8; the piston rod is connected to the second detection module via a first flange 6, and the second detection module is connected to the electric push rod 15 to be tested; the other end of the electric push rod 15 to be tested is fixed to the test bench 14;

[0031] The first detection module and the second detection module are connected to the signal input end of the control system 22 ; the signal output end of the control system 22 is connected to the hydraulic control device 1 .

[0032] The first detection module includes a displacement scale 5 and a detection head. The detection head is mounted on a guide plate 9 of the guide device. When the guide plate 9 moves back and forth due to the piston rod, the detection head detects the distance traveled on the displacement scale 5. The detection head and the push-pull force sensor 8 are each connected to a control system 22. Based on the received detection signals, the control system displays the displacement parameters on a first display screen 20 and the push-pull force parameters on a second display screen 21.

[0033] When the second detection module is connected to the electric push rod 15 to be tested, a second flange 10, a connecting earring 11, and an adjustable trunnion 12 are sequentially arranged between the second detection module and the electric push rod 15 to be tested. The second detection module is arranged on one side of the guide plate 9, and the second flange 10 is arranged on the other side of the guide plate 9. The connecting earring 11 is fixed in the middle of the second flange 10. The connecting earring 11 is connected to the adjustable trunnion 12, and the adjustable trunnion 12 is connected to the electric push rod 15 to be tested. The connection to the underwater electric push rod 15 to be tested is made through the adjustable trunnion 12. The adjustable trunnion 12 can adjust the trunnion width. If the diameter needs to be changed, the trunnion diameter can be increased with a shaft sleeve, thereby reducing the number of test tooling types.

[0034] like Figure 3-Figure 4 As shown, the other end of the electric push rod 15 to be tested is connected to the tail earring 16 and the push rod tail stock 17 in sequence; the push rod tail stock 17 is fixedly installed on the test bench.

[0035] The push rod tailstock 17 includes a movable seat plate 18 and a seat body 19 ; the tail earring 16 is fixedly mounted on the movable seat plate 18 , and the movable seat plate 18 is mounted on the seat body 19 .

[0036] The base 19 has a flat key 23 at its bottom, and the test bench has multiple key slots. The flat key 23 at the bottom of the base 19 cooperates with the key slots to position the push rod tailstock 17 on the test bench. The base 19 has four threaded holes at its four vertices, and the base 19 is fixed to the test bench with bolts.

[0037] In this solution, after the electric push rod to be tested is installed on the test bench according to the above installation process, the hydraulic control device 1 controls the piston of the hydraulic cylinder 2 to push / pull the electric push rod to be tested forward or backward. At this time, when the guide plate 9 is pushed back and forth by the piston rod, the detection head installed on the guide plate 9 detects the distance moved on the displacement grating scale 5; the push-pull force sensor 8 detects the push-pull force. Based on the received detection signal, the control system displays the displacement parameters on the first display screen 20 and the push-pull force parameters on the second display screen 21. By detecting the displacement of the guide plate 9, accurate feedback of the cylinder stroke information is provided.

[0038] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An underwater electric push rod testing platform, characterized in that: It includes a hydraulic control device, a hydraulic cylinder, an electric push rod to be tested, a guide device, a detection device and a control system; The hydraulic control device is connected to the hydraulic cylinder; the hydraulic cylinder is fixed on the test bench by the cylinder base; guide devices are provided on both sides of the piston rod of the hydraulic cylinder; The detection device includes a first detection module and a second detection module; the first detection module is used to detect the displacement of the electric push rod to be tested when it is subjected to a push or pull force; the second detection module is used to detect the push or pull force applied to the electric push rod to be tested; The piston rod is connected to the second detection module through the first flange, and the second detection module is connected to the electric push rod to be tested; the other end of the electric push rod to be tested is fixed on the test bench; The first detection module and the second detection module are connected to the signal input end of the control system; the signal output end of the control system is connected to the hydraulic control device.

2. The underwater electric push rod testing platform according to claim 1, characterized in that: The guide device includes guide rods arranged on both sides of the piston rod and guide plates penetrating the guide rods; one end of the guide device is fixed on the cylinder base, and the other end is fixed on the guide base; the guide base is fixed on the test bench.

3. The underwater electric push rod testing platform according to claim 2, characterized in that: The guide rod is sleeved with a ball guide sleeve on the outside, and the ball guide sleeve is fixedly mounted on the guide plate. The guide rod passes through the ball guide sleeve and is fixed on the guide base.

4. The underwater electric push rod testing platform according to claim 2, characterized in that: The first detection module includes a displacement grating ruler and a detection head; the detection head is arranged on the guide plate of the guide device; when the guide plate is pushed back and forth by the piston rod, the detection head arranged on the guide plate detects the distance moved on the displacement grating ruler.

5. The underwater electric push rod testing platform according to claim 1, characterized in that: When the second detection module is connected to the electric push rod to be tested, it also includes a second flange, a connecting earring and an adjustable ear shaft arranged in sequence between the second detection module and the electric push rod to be tested; the second detection module is arranged on one side of the guide plate, and the second flange is arranged on the other side of the guide plate. The connecting earring is fixed in the middle of the second flange, the connecting earring is connected to the adjustable ear shaft, and the adjustable ear shaft is connected to the electric push rod to be tested.

6. The underwater electric push rod testing platform according to claim 1, characterized in that: The other end of the electric push rod to be tested is connected to the tail earring and the push rod tail stock in sequence; the push rod tail stock is fixedly installed on the test bench.

7. The underwater electric push rod testing platform according to claim 6, characterized in that: The push rod tailstock includes a movable seat plate and a seat body; the tail earring is fixedly mounted on the movable seat plate, and the movable seat plate is mounted on the seat body.

8. The underwater electric push rod testing platform according to claim 7, characterized in that: The bottom of the seat body is provided with a flat key, and the test bench is provided with a plurality of key slots; the flat key at the bottom of the seat body cooperates with the key slots to realize the positioning of the push rod tailstock on the test bench.

9. The underwater electric push rod testing platform according to claim 7, characterized in that: Four threaded holes are respectively provided at the four vertices of the base body, and the base body is fixed on the test bench by bolts.

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