Frequency modulation function testing device

Abstract

The utility model provides a frequency modulation function testing device comprising a testing device body, two sides of the testing device body are respectively provided with a first support rod, a rotation connection structure is arranged between the first support rods and the testing device body, and the rotation connection structure comprises a first rotation shaft and a nut sleeve. A second supporting rod is specially arranged between the two first supporting rods, the second supporting rod is in sliding connection with the first supporting rods, a telescopic rod is arranged on the side, close to the testing device body, of the second supporting rod, and a protection plate is rotationally matched with one end of the telescopic rod. According to the utility model, the telescopic rod is installed at one side, close to the testing device body, of the second supporting rod, and the protection plate is rotatably installed at one end of the telescopic rod, so that the protection plate can be turned over, thereby preventing the protection plate from limiting the rotation of the first supporting rod and the second supporting rod; therefore, the angle of the testing device body can be adjusted more conveniently.

Description

Technical Field

[0001] This utility model relates to the field of frequency modulation function testing technology, specifically a frequency modulation function testing device. Background Technology

[0002] A generator set control system is used to control the operation of a generator set. Primary frequency regulation is one of the control logic functions of the generator set control system. When the grid frequency deviates from the rated value, the generator set control system automatically controls the generator set to increase or decrease its grid-connected active power, thereby limiting changes in the grid frequency and maintaining grid frequency stability. For example, patent CN219475731U discloses a primary frequency regulation function testing device, including a support assembly comprising a testing device body, connectors, limiting members, fixing rods, and connecting rods. The connectors are located on both sides of the testing device body, the limiting members are located within the connectors, the fixing rods are fixed to the connectors, and the connecting rods are fixed between the two fixing rods. A protective assembly is also included, located between the two fixing rods, comprising a protective frame, guide members, and fasteners. The protective frame slides between the two fixing rods. This technical solution uses a support component to support the device during use, making it easier to change the support angle and lift the device during transport. The device is then protected by a protective component. However, the protective component limits the support component, making it difficult to open and affecting the normal rotation of the support component, thus making the device inconvenient to use.

[0003] Therefore, this utility model provides a frequency modulation function testing device. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a frequency modulation function testing device to solve the problems mentioned in the background art. This invention allows the protection plate to be flipped, thereby preventing the protection plate from limiting the rotation of the first and second support rods, and the second support rod can be slidable, making it more convenient to adjust the angle of the testing device body.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a frequency modulation function testing device, comprising a testing device body, wherein first support rods are installed on both sides of the testing device body, and a rotatable connection structure is installed between the first support rods and the testing device body, the rotatable connection structure including a first rotating shaft and a nut sleeve, a second support rod is specially provided between the two first support rods, the second support rod is slidably connected to the first support rods, and a telescopic rod is installed on the side of the second support rod near the testing device body, one end of the telescopic rod being rotatably fitted with a protective plate.

[0006] Furthermore, the first rotating shaft is fixedly connected to the main body of the testing device, the nut sleeve is threadedly engaged with the first rotating shaft, and a pressure block is fixed on the nut sleeve.

[0007] Furthermore, a rotating plate is rotatably fitted on the first rotating shaft, and the rotating plate is located between the pressure block and the main body of the testing device.

[0008] Furthermore, a mounting plate is fixed to one side of the rotating plate, and the mounting plate is fixedly connected to the first support rod.

[0009] Furthermore, the second support rod has a C-shaped structure, the first support rod has a groove, and the end of the second support rod is equipped with a screw, which corresponds to the groove. Nuts are installed at both ends of the screw.

[0010] Furthermore, a rotating sleeve is installed on the second support rod, the second support rod is rotatably connected to the rotating sleeve, and the rotating sleeve is fixedly connected to the telescopic rod.

[0011] Furthermore, a rotating frame is fixed to one side of the protective plate, and the rotating frame corresponds to the telescopic rod.

[0012] Furthermore, a second rotating shaft is fixed inside the rotating frame, and the second rotating shaft is rotatably connected to the telescopic rod.

[0013] Furthermore, anti-slip blocks are installed on both the second support rod and the main body of the testing device. Specifically, anti-slip blocks made of rubber material are fixed to the lower side of both the second support rod and the lower side of the main body of the testing device.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a frequency modulation function testing device, which includes a second support rod; a testing device body; a telescopic rod; a protective plate; and a first support rod.

[0015] A telescopic rod is installed on the side of the second support rod near the main body of the testing device. A protective plate is rotatably installed at one end of the telescopic rod. The protective plate can be flipped to prevent it from limiting the rotation of the first and second support rods. The second support rod can also be slid, making it easier to adjust the angle of the main body of the testing device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall assembly three-dimensional structure of the frequency modulation function testing device of this utility model;

[0017] Figure 2 This is a schematic diagram of the assembly cross-sectional structure of the first rotating shaft and rotating plate in a frequency modulation function testing device of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the assembly of the test device body in a frequency modulation function test device according to the present invention.

[0019] Figure 4 This is a schematic diagram of the assembly cross-sectional structure of the first support rod and the second support rod in a frequency modulation function testing device of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the assembly of the first support rod and the second support rod in a frequency modulation function testing device of this utility model;

[0021] In the figure: 1. Test device body; 2. Protective plate; 3. First rotating shaft; 4. Rotating plate; 5. Nut sleeve; 6. Pressure block; 7. Mounting plate; 8. First support rod; 9. Second support rod; 10. Slide groove; 11. Screw; 12. Nut; 13. Telescopic rod; 14. Rotating frame; 15. Anti-slip block; 16. Second rotating shaft. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1 to 5 This utility model provides a technical solution: a frequency modulation function testing device, including a testing device body 1. The testing device body 1 is equipped with first support rods 8 on both sides. A rotatable connection structure is installed between the first support rods 8 and the testing device body 1. The rotatable connection structure includes a first rotating shaft 3 and a nut sleeve 5. A second support rod 9 is specially provided between the two first support rods 8. The second support rod 9 is slidably connected to the first support rods 8. A telescopic rod 13 is installed on the side of the second support rod 9 near the testing device body 1. A protective plate 2 is rotatably fitted at one end of the telescopic rod 13.

[0024] In this embodiment, the first rotating shaft 3 is fixedly connected to the test device body 1, the nut sleeve 5 is threadedly engaged with the first rotating shaft 3, the nut sleeve 5 is fixed with a pressure block 6, the first rotating shaft 3 is rotatably engaged with a rotating plate 4, the rotating plate 4 is located between the pressure block 6 and the test device body 1, and a mounting plate 7 is fixedly attached to one side of the rotating plate 4, the mounting plate 7 is fixedly connected to the first support rod 8.

[0025] The first support rod 8 can be rotated by rotating the rotating plate 4, thereby raising the front part of the test device body 1 through the first support rod 8, so that the rear side of the test device body 1 contacts the table, and the interface makes the test device body 1 tilt, thereby facilitating the adjustment of the angle of the test device body 1 and facilitating the use of the test device body 1.

[0026] When it is necessary to fix the first support rod 8, rotate the nut sleeve 5 so that the pressure block 6 on the nut sleeve 5 presses against the rotating plate 4, thereby fixing the rotating plate 4 and fixing the first support rod 8. At this time, a triangular structure is formed between the test device body 1, the first support rod 8, the second support rod 9 and the table, which can be placed on the table relatively stably.

[0027] The second support rod 9 has a C-shaped structure. The first support rod 8 has a groove 10 inside. The end of the second support rod 9 is equipped with a screw 11, which corresponds to the groove 10. Nuts 12 are installed at both ends of the screw 11. The end of the second support rod 9 is a two-plate structure, and the first support rod 8 is located between the two plates.

[0028] Specifically, when it is necessary to slide the second support rod 9, loosen the nut 12 and then pull the second support rod 9, so that the second support rod 9 drives the screw 11 to slide in the slide groove 10, thereby adjusting the overall length of the first support rod 8 and the second support rod 9. Rotate the nut 12, at this time the two nuts 12 press the plate structure, so that the plate structure presses the first support rod 8, thereby fixing the length of the first support rod 8 and the second support rod 9. Thus, the angle and height of the test device body 1 can be adjusted according to the length of the first support rod 8 and the second support rod 9, ensuring the stability of the test device body 1.

[0029] A rotating frame 14 is fixed to one side of the protective plate 2. The rotating frame 14 corresponds to the telescopic rod 13. A second rotating shaft 16 is fixed inside the rotating frame 14. The second rotating shaft 16 is rotatably connected to the telescopic rod 13. Anti-slip blocks 15 are installed on both the second support rod 9 and the test device body 1. Specifically, anti-slip blocks 15 are fixed to the lower side of the second support rod 9 and the lower side of the test device body 1. The anti-slip blocks 15 are made of rubber material.

[0030] Specifically, the telescopic rod 13 can be connected to the second support rod 9 through a rotating sleeve. The telescopic rod 13 is fixed to the rotating sleeve, and the rotating sleeve is rotatably connected to the second support rod 9. The telescopic rod 13 can rotate around the second support rod 9 through the rotating sleeve.

[0031] Screws can also be installed on the rotating sleeve through threaded connection. The rotating sleeve is fixed by the friction generated by the contact between the screw and the second support rod 9, thereby fixing the angle of the telescopic rod 13.

[0032] When protection is required, the telescopic rod 13 can be extended so that the protective plate 2 comes into contact with the test device body 1. Then, the length of the telescopic rod 13 is fixed. At this time, the nut sleeve 5 is used so that the pressure block 6 on the nut sleeve 5 presses against the rotating plate 4, thereby fixing the rotating plate 4. At the same time, the nut 12 is rotated so that the length between the first support rod 8 and the second support rod 9 no longer changes, so that the protective plate 2 can be tightly attached to the test device body 1, thereby fixing the position of the protective plate 2 and thus achieving protection of the test device body 1.

[0033] When using the test device body 1, pull the second support rod 9 outward or adjust the length of the telescopic rod 13 so that the protective plate 2 is away from the test device body 1. Then rotate the protective plate 2 so that it does not limit the rotation of the second support rod 9, thereby rotating the second support rod 9 downward and raising one end of the test device body 1. At this time, the protective plate 2 will not obstruct the test device body 1, making it more convenient to use.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A frequency modulation function testing device, comprising a testing device body (1), characterized in that, The test device body (1) is equipped with first support rods (8) on both sides. A rotating connection structure is installed between the first support rods (8) and the test device body (1). The rotating connection structure includes a first rotating shaft (3) and a nut sleeve (5). A second support rod (9) is specially provided between the two first support rods (8). The second support rod (9) is slidably connected to the first support rod (8). A telescopic rod (13) is installed on the side of the second support rod (9) close to the test device body (1). A protective plate (2) is rotatably fitted at one end of the telescopic rod (13).

2. The frequency modulation function testing device according to claim 1, characterized in that: The first rotating shaft (3) is fixedly connected to the test device body (1), the nut sleeve (5) is threadedly engaged with the first rotating shaft (3), and a pressure block (6) is fixed on the nut sleeve (5).

3. The frequency modulation function testing device according to claim 2, characterized in that: A rotating plate (4) is rotatably fitted on the first rotating shaft (3), and the rotating plate (4) is located between the pressure block (6) and the test device body (1).

4. The frequency modulation function testing device according to claim 3, characterized in that: The rotating plate (4) is fixed with a mounting plate (7) on one side, and the mounting plate (7) is fixedly connected to the first support rod (8).

5. The frequency modulation function testing device according to claim 1, characterized in that: The second support rod (9) has a C-shaped structure, the first support rod (8) has a groove (10) inside, and the end of the second support rod (9) is equipped with a screw (11).

6. The frequency modulation function testing device according to claim 5, characterized in that: The screw (11) is slidably connected to the slide (10), and nuts (12) are installed at both ends of the screw (11).

7. The frequency modulation function testing device according to claim 1, characterized in that: The second support rod (9) is equipped with a rotating sleeve, the second support rod (9) is rotatably connected to the rotating sleeve, and the rotating sleeve is fixedly connected to the telescopic rod (13).

8. The frequency modulation function testing device according to claim 1, characterized in that: A rotating frame (14) is fixed on one side of the protective plate (2), and the rotating frame (14) corresponds to the telescopic rod (13).

9. The frequency modulation function testing device according to claim 8, characterized in that: The rotating frame (14) has a second rotating shaft (16) fixed inside, and the second rotating shaft (16) is rotatably connected to the telescopic rod (13).

10. The frequency modulation function testing device according to claim 1, characterized in that: Anti-slip blocks (15) are fixed on the lower side of the second support rod (9) and the lower side of the test device body (1). The anti-slip blocks (15) are made of rubber material.

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