Fatigue test platform based on servo electric cylinder

Abstract

The utility model discloses a fatigue test platform based on a servo electric cylinder, which relates to the technical field of fatigue test and comprises a test platform body. The pressure gauge is connected to the test platform body and is used for testing; the clamping assembly is arranged at the output end of the pressure gauge and used for positioning the servo electric cylinder; one driving gear is rotated to drive the transmission gear ring to rotate, the transmission gear ring can drive the other driving gears to rotate at the same time in the rotating process, and in the rotating process of the driving gears, the positioning racks connected with the driving gears in a meshed mode can move towards the position close to the central axis of the installation cylinder. The number of the positioning racks is multiple, so that multi-direction positioning can be performed, the stability after positioning is improved, the servo electric cylinders of different models can be tested by the device, and the testing range of the device is widened.

Description

Technical Field

[0001] The utility model belongs to the technical field of fatigue testing, and specifically relates to a fatigue testing platform based on a servo electric cylinder. Background Art

[0002] The servo electric cylinder is a modular product that integrates a servo motor and a lead screw. Before using the servo electric cylinder, we need to test the fatigue performance of the servo electric cylinder to determine the fatigue strength of the servo electric cylinder. The existing Chinese patent (application number: CN202220856918.6) is a fatigue test platform based on a servo electric cylinder, including a test frame, a pressure device is fixedly connected to the top of the test frame, a groove is provided at the output end of the pressure device, a servo electric cylinder is provided on the inner wall of the bottom end of the test frame, and the output end of the servo electric cylinder is inserted into the groove, a hole groove is provided at the bottom end of the test frame, and the bottom end of the servo electric cylinder is inserted into the hole groove provided in the test frame.

[0003] During use, the above-mentioned device uses the groove opened at the output end of the pressure device to position the output end of the servo electric cylinder to be tested, so that the servo electric cylinder will not slip during the test, thereby ensuring the accuracy of the data test. However, since the inner diameter of the groove opened at the output end cannot be adjusted, the pressure device can often only perform positioning tests on one model of servo electric cylinder during the test, which increases the limitations of the device test.

[0004] In view of this, this application is hereby filed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a fatigue test platform based on a servo electric cylinder to achieve the purpose of increasing the test range of the lifting device.

[0006] In order to solve the above technical problems, the utility model provides a fatigue testing platform based on a servo electric cylinder, comprising: a test platform body; a pressure device connected to the test platform body for testing; a clamping assembly arranged at the output end of the pressure device for positioning the servo electric cylinder; the clamping assembly comprises a mounting cylinder connected to the pressure device, a transmission gear ring is rotatably provided in the mounting cylinder, a plurality of driving gears are meshedly connected to the transmission gear ring, the plurality of driving gears are equidistantly distributed in a circular array with the central axis of the mounting cylinder as the center, a positioning rack is meshedly connected to the driving gear, and a micro motor for driving one of the driving gears to rotate is connected to one side of the mounting cylinder.

[0007] Furthermore, one end of the positioning rack is connected to an elastic clamping block, and the elastic clamping block is designed as a semicircular hollow rectangle.

[0008] Furthermore, the height of the driving gear is equal to the sum of the heights of the transmission gear ring and the driving gear.

[0009] Furthermore, a control panel is connected to the test platform body.

[0010] Furthermore, a lifting assembly is provided in the test platform body, and the lifting assembly includes a bidirectional screw rotatably connected in the test platform body, and two symmetrical transmission blocks are threadedly connected to the bidirectional screw, and a connecting rod is rotatably connected to the transmission block, and the other end of the connecting rod is rotatably connected to a mounting seat, and the other side of the mounting seat is connected to a placing platform, and a driving motor for driving the bidirectional screw to rotate is connected to the test platform body.

[0011] Furthermore, there are two bidirectional screw rods for driving the placement platform to rise and fall, one end of each of the two bidirectional screw rods is connected to a synchronous wheel, and a synchronous belt is connected between the two synchronous wheels.

[0012] Furthermore, two mutually symmetrical fixing seats are connected to the placement platform, and electric telescopic rods are connected to opposite sides of the two fixing seats, and the telescopic ends of the electric telescopic rods are connected to a resistance block.

[0013] Furthermore, a guide rod is connected to the test platform body, and the transmission block is slidably connected to the guide rod.

[0014] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0015] 1. In the utility model, rotating one of the driving gears drives the transmission gear ring to rotate, and the transmission gear ring can drive the remaining driving gears to rotate simultaneously during the rotation process. During the rotation of the driving gear, the positioning rack meshing with it moves to a position close to the central axis of the mounting tube, thereby positioning the servo electric cylinder. Since there are multiple positioning racks, multi-directional positioning can be performed, thereby improving the stability after positioning and avoiding the servo electric cylinder from sliding during testing. This setting enables the device to test servo electric cylinders of different models, thereby improving the test range of the device.

[0016] 2. In the utility model, the driving motor is started to drive the bidirectional screw to rotate. During the rotation process, the bidirectional screw can make the two transmission blocks move relative to each other. At this time, the angle of the connecting rod rotatably connected to the transmission block changes, and the angle between it and the transmission block gradually increases. At this time, the height of the placement platform can be correspondingly increased. This setting can be used in conjunction with the clamping assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a first cross-sectional view of the lifting assembly in the utility model;

[0020] Figure 3 It is a second cross-sectional view of the lifting assembly in the utility model;

[0021] Figure 4 It is a schematic diagram of the overall structure of the clamping assembly in the utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the clamping assembly in the utility model;

[0023] Figure 6 for Figure 2 A magnified view of the structure at center.

[0024] Numbers in the figure:

[0025] 1. Test platform body; 2. Presser; 3. Clamping assembly; 301. Mounting cylinder; 302. Transmission gear ring; 303. Driving gear; 304. Positioning rack; 305. Micro motor; 4. Elastic clamping block; 5. Control panel; 6. Lifting assembly; 601. Bidirectional screw rod; 602. Transmission block; 603. Connecting rod; 604. Mounting seat; 605. Placing platform; 606. Driving motor; 7. Synchronous wheel; 8. Synchronous belt; 9. Fixed seat; 10. Electric telescopic rod; 11. Resistance block; 12. Guide rod.

[0026] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The servo electric cylinder is a modular product that integrates the servo motor and the lead screw. Before using the servo electric cylinder, we need to test its fatigue performance. The existing testing equipment often has certain limitations during the testing process, and it is not convenient to test different models of servo electric cylinders.

[0031] like Figures 1 to 6 As shown, the utility model provides a fatigue testing platform based on a servo electric cylinder.

[0032] Specifically, by Figure 1 , Figure 4 and Figure 5 The invention provides a test platform body 1, comprising: a test platform body 1; a pressure device 2 connected to the test platform body 1 for testing; a clamping assembly 3 arranged at the output end of the pressure device 2 for positioning the servo electric cylinder; the clamping assembly 3 comprises a mounting cylinder 301 fixedly connected to the output end of the pressure device 2, a transmission gear ring 302 is rotatably arranged in the mounting cylinder 301, a groove for the transmission gear ring 302 to rotate is provided in the mounting cylinder 301, a plurality of driving gears 303 are meshedly connected to the transmission gear ring 302, the plurality of driving gears 303 are distributed in a circular array with equal spacing around the central axis of the mounting cylinder 301, a positioning rack 304 for positioning the servo electric cylinder is also meshedly connected to the driving gear 303, the positioning rack 304 is slidably connected to the mounting cylinder 301, a connecting hole is provided on the mounting cylinder 301 for facilitating the sliding of the positioning rack 304, a rotating shaft is connected to the driving gear 303, the rotating shaft is rotatably connected in the mounting cylinder 301, and a micro motor 305 for driving one of the rotating shafts to rotate is connected to one side of the mounting cylinder 301.

[0033] Preferably, the clamping assembly 3 can be fixed to the output end of the press 2 by means of screws or welding.

[0034] In the present invention, in order to facilitate the testing of servo electric cylinders of different models, one of the active gears 303 can be rotated to drive the transmission ring gear 302 to rotate. During the rotation, the transmission ring gear 302 can drive the remaining active gears 303 to rotate at the same time. During the rotation of the active gear 303, the positioning rack 304 meshing with it will move to a position close to the central axis of the mounting tube 301, thereby positioning the servo electric cylinder. Since there are multiple positioning racks 304, multi-directional positioning can be performed, thereby improving the stability after positioning and avoiding the servo electric cylinder from sliding during testing.

[0035] Furthermore, as a specific implementation of the present invention, the present invention provides a fatigue testing platform based on a servo electric cylinder.

[0036] Specifically, Figure 5 As shown, one end of the positioning rack 304 is connected to an elastic clamping block 4, and the elastic clamping block 4 is designed as a semicircular hollow rectangle. One side of the elastic clamping block 4 is integrally formed with anti-skid particles, and the anti-skid particles are hollow in design.

[0037] The preferred material of the elastic clamping block 4 can be elastic rubber with a certain deformation amount.

[0038] In the utility model, an elastic clamping block 4 is connected to one side of the positioning rack 304 to increase the contact area with the servo electric cylinder and improve the positioning stability. Designing it as a semicircular hollow rectangle makes it more convenient to fit with the servo electric cylinder. The designed anti-slip particles increase the friction coefficient between the elastic clamping block 4 and the servo electric cylinder.

[0039] Furthermore, as another specific implementation of the present invention, the present invention provides a fatigue testing platform based on a servo electric cylinder.

[0040] Specifically, Figure 5 It is shown that the height of the driving gear 303 is equal to the sum of the heights of the transmission gear ring 302 and the driving gear 303.

[0041] In the present invention, this arrangement enables the driving gear 303 to mesh with the transmission gear ring 302 and the driving gear 303 at the same time, so as to facilitate driving the positioning rack 304 to position the servo electric cylinder.

[0042] Furthermore, as another specific implementation of the present invention, the present invention provides a fatigue testing platform based on a servo electric cylinder.

[0043] Specifically, Figure 1As shown, a control panel 5 is connected to the test platform body 1, and the control panel 5 is connected to the electrical equipment wires on the test platform body 1.

[0044] In the utility model, this arrangement facilitates the control of various electrical devices on the test platform body 1, thereby improving the automation effect of the device.

[0045] Furthermore, as another specific implementation of the present invention, the present invention provides a fatigue testing platform based on a servo electric cylinder.

[0046] Specifically, Figure 3 As shown, the test platform body 1 is also provided with a lifting component 6 for adjusting the test height of the servo electric cylinder, and the lifting component 6 includes a bidirectional screw rod 601 rotatably connected to the test platform body 1, and two mutually symmetrical transmission blocks 602 are threadedly connected to the bidirectional screw rod 601, and a connecting rod 603 is rotatably connected to the transmission block 602, and the other end of the connecting rod 603 is rotatably connected to a mounting seat 604, and the other side of the mounting seat 604 is connected to a placement platform 605 for placing the servo electric cylinder, and a driving motor 606 for driving the bidirectional screw rod 601 to rotate is connected to the test platform body 1.

[0047] It should be noted that in the actual production process, a cavity can be opened in the test platform body 1 to facilitate the installation of parts in the lifting assembly 6. At the same time, the placement platform 605 is set on the upper surface of the test platform body 1 to facilitate the installation of the servo electric cylinder. A bearing can be connected in the cavity so that one end of the bidirectional screw rod 601 is connected to the bearing to facilitate the rotation of the bidirectional screw rod 601 in the cavity. A threaded groove can be opened in the transmission block 602 to facilitate its threaded connection with the bidirectional screw rod 601.

[0048] In the utility model, since different servo electric cylinders have different models, their heights are also different. Therefore, in order to facilitate the testing of different models of servo electric cylinders, the height of the placement platform 605 can be adjusted according to the heights of different models of servo electric cylinders. The drive motor 606 is started to drive the bidirectional screw rod 601 to rotate. During the rotation process, the bidirectional screw rod 601 can make the two transmission blocks 602 move relative to each other. At this time, the angle of the connecting rod 603 rotatably connected to the transmission block 602 changes, and the angle between it and the transmission block 602 gradually increases. At this time, the height of the placement platform 605 can be correspondingly increased. This setting can be used in conjunction with the clamping component 3 to facilitate the testing of different models of servo electric cylinders.

[0049] Furthermore, as another specific implementation of the present invention, the present invention provides a fatigue testing platform based on a servo electric cylinder.

[0050] Specifically, Figure 3 and Figure 6As shown, there are two bidirectional screw rods 601 driving the placement platform 605 to rise and fall, one end of each of the two bidirectional screw rods 601 is connected to a synchronous wheel 7, and a synchronous belt 8 is connected between the two synchronous wheels 7 for transmission.

[0051] In the utility model, two bidirectional screw rods 601 are provided, and one screw rod makes the lifting and lowering of the placement platform 605 more convenient, thereby improving the accuracy of the test data. The synchronous wheel 7 and the synchronous belt 8 provided can be used in combination so that the lifting component 6 can utilize a driving motor 606 to drive the two bidirectional screw rods 601 to rotate, thereby reducing the manufacturing cost of the device.

[0052] Furthermore, as another specific implementation of the present invention, the present invention provides a fatigue testing platform based on a servo electric cylinder.

[0053] Specifically, Figure 2 As shown, two symmetrical fixing seats 9 are connected to the placement platform 605, and the opposite sides of the two fixing seats 9 are connected to electric telescopic rods 10, and the telescopic ends of the electric telescopic rods 10 are connected to a resistance block 11.

[0054] In the utility model, starting the electric telescopic rod 10 can drive the resistance block 11 to move horizontally, so as to fix the two sides of the servo electric cylinder, thereby improving the stability of the servo electric cylinder during fatigue testing.

[0055] Furthermore, as another specific implementation of the present invention, the present invention provides a fatigue testing platform based on a servo electric cylinder.

[0056] Specifically, Figure 3 As shown, a guide rod 12 is connected inside the test platform body 1, a transmission block 602 is slidably connected to the guide rod 12, and a sliding hole adapted to the guide rod 12 is opened on the transmission block 602.

[0057] In the present invention, this arrangement can provide a certain limiting and guiding effect on the sliding of the transmission block 602, thereby improving the stability of the transmission block 602 during the sliding process.

[0058] Working principle: Rotating one of the driving gears 303 drives the transmission gear ring 302 to rotate. During the rotation process, the transmission gear ring 302 can drive the remaining driving gears 303 to rotate at the same time. During the rotation process of the driving gear 303, the positioning rack 304 meshed with it will move to a position close to the central axis of the mounting tube 301, thereby positioning the servo electric cylinder. Since there are multiple positioning racks 304, multi-directional positioning can be performed, thereby improving the stability after positioning and avoiding the servo electric cylinder from sliding during testing.

[0059] Start the drive motor 606 to drive the bidirectional lead screw 601 to rotate. During the rotation of the bidirectional lead screw 601, the two transmission blocks 602 can move relative to each other. At this time, the angle of the connecting rod 603 rotatably connected to the transmission block 602 changes, and the angle between it and the transmission block 602 gradually increases. At this time, the height of the placement platform 605 can be increased accordingly. This setting can be used in conjunction with the clamping assembly 3. The above scheme enables the device to test servo electric cylinders of different models, thereby improving the test range of the device.

[0060] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A fatigue test platform based on a servo electric cylinder, comprising: Test platform body (1); A pressure device (2) connected to the test platform body (1); A clamping assembly (3) arranged at the output end of the press (2); The clamping assembly (3) is characterized in that it comprises a mounting cylinder (301) connected to the pressure device (2), a transmission gear ring (302) is rotatably provided inside the mounting cylinder (301), a plurality of driving gears (303) are meshedly connected to the transmission gear ring (302), the plurality of driving gears (303) are distributed in a circular array with the central axis of the mounting cylinder (301) as the center, a positioning rack (304) is meshedly connected to the driving gear (303), and a micro motor (305) for driving one of the driving gears (303) to rotate is connected to one side of the mounting cylinder (301).

2. A fatigue testing platform based on a servo electric cylinder according to claim 1, characterized in that: One end of the positioning rack (304) is connected to an elastic clamping block (4), and the elastic clamping block (4) is designed as a semicircular hollow rectangle.

3. A fatigue testing platform based on a servo electric cylinder according to claim 1, characterized in that: The height of the driving gear (303) is equal to the sum of the heights of the transmission gear ring (302) and the driving gear (303).

4. A fatigue testing platform based on a servo electric cylinder according to claim 1, characterized in that: The test platform body (1) is connected to a control panel (5).

5. The fatigue testing platform based on servo electric cylinder according to claim 1 is characterized in that: The test platform body (1) is also provided with a lifting assembly (6), the lifting assembly (6) comprising a bidirectional screw (601) rotatably connected to the test platform body (1), the bidirectional screw (601) being threadedly connected to two mutually symmetrical transmission blocks (602), the transmission blocks (602) being rotatably connected to a connecting rod (603), the other end of the connecting rod (603) being rotatably connected to a mounting seat (604), the other side of the mounting seat (604) being connected to a placement platform (605), and the test platform body (1) being connected to a driving motor (606) for driving the bidirectional screw (601) to rotate.

6. A fatigue testing platform based on a servo electric cylinder according to claim 5, characterized in that: There are two bidirectional screw rods (601) for driving the placement platform (605) to rise and fall. One end of each of the two bidirectional screw rods (601) is connected to a synchronous wheel (7), and a synchronous belt (8) is connected between the two synchronous wheels (7).

7. The fatigue testing platform based on servo electric cylinder according to claim 5 is characterized in that: The placement platform (605) is connected to two mutually symmetrical fixing seats (9), and opposite sides of the two fixing seats (9) are connected to electric telescopic rods (10), and the telescopic ends of the electric telescopic rods (10) are connected to a resistance block (11).

8. The fatigue testing platform based on servo electric cylinder according to claim 5 is characterized in that: A guide rod (12) is connected inside the test platform body (1), and the transmission block (602) is slidably connected to the guide rod (12).

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