Optical cat test device

Abstract

This utility model discloses an optical modem testing device, including a support base, a movable plate, a positioning drive unit, and an auxiliary plug-in assembly. The support base has a groove with two fixed sides, which are adjacent to each other. The movable plate is slidably connected to the support base, and a movable plate is provided opposite to each of the two fixed sides, namely a first movable side plate and a second movable side plate. The first and second movable side plates, together with the two fixed sides, form a positioning cavity. The positioning drive unit is located on the support base. When activated, the positioning drive unit drives the first and second movable side plates to move simultaneously towards or away from the center of the positioning cavity. The auxiliary plug-in assembly is located on the support base, with a plug interface formed on one of the fixed sides. The auxiliary plug-in assembly is located at the plug interface and includes a plug socket and multiple spaced plug fixing members slidably disposed on the plug socket. This improves the compatibility range of the testable optical modems.

Description

Technical Field

[0001] This utility model relates to the field of optical modem testing technology, and in particular to an optical modem testing device. Background Technology

[0002] An optical modem (ONT) is a device in a network transmission line that ensures stable network signal transmission. During the production or repair of an ONT, functional or fault tests are required, which necessitates connecting the network cable connector to the network interface on the ONT.

[0003] Currently, most existing optical modem testing devices are designed for specific models of optical modems, resulting in a limited range of compatibility for their positioning structures, making them unable to adapt to optical modems of different models, sizes, or shapes. In addition, the auxiliary interface for plugging and unplugging network cables in existing optical modem testing devices is in a fixed position. When changing the optical modem model, it is difficult to accurately align the test plug with the optical modem interface, which can easily lead to physical damage to the test plug or the optical modem interface during plugging and unplugging. Utility Model Content

[0004] The purpose of this invention is to provide an optical modem testing device to solve the problem of limited compatibility of existing optical modem testing devices.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An optical modem testing device, comprising:

[0007] A support base having a groove, the groove having at least two fixed sides, the two fixed sides being adjacent sides;

[0008] The movable plate is slidably connected to the bearing base. The movable plate is provided at the position opposite to the two fixed sides, namely the first movable side plate and the second movable side plate. The first movable side plate, the second movable side plate and the two fixed sides form a positioning cavity.

[0009] The positioning drive unit, when activated, can drive the first movable side plate and the second movable side plate to move simultaneously toward or away from the center of the positioning cavity;

[0010] An auxiliary plug-in assembly is disposed on the support base, wherein a plug-in interface is formed on one of the fixed sides, and the auxiliary plug-in assembly is disposed at the plug-in interface, comprising a plug base and a plurality of spaced plug fixing members slidably disposed on the plug base.

[0011] Optionally, a first fixed plate parallel to the first movable side plate is fixedly connected to the bearing base, and a first guide rod is provided on the first fixed plate, and the first movable side plate slides through the first guide rod;

[0012] A second fixed plate parallel to the second movable side plate is fixedly connected to the bearing base. A second guide rod is provided on the second fixed plate, and the second movable side plate slides through the second guide rod.

[0013] Both the first guide rod and the second guide rod are fitted with a first spring.

[0014] Optionally, when the positioning drive unit is not activated, the first movable side plate and the second movable side plate are in their initial positions, and at this time, the adaptation size of the positioning cavity is the minimum adaptation size.

[0015] Optionally, the bottom of the bearing base is provided with a mounting base plate, and the positioning drive unit is disposed between the mounting base plate and the bearing base, the positioning drive unit comprising:

[0016] A sliding block is connected to the first movable side plate, and a guide block with an inclined surface is provided on the side of the sliding block near the second sliding side plate;

[0017] A driven block is connected to the second movable side plate. The driven block has an inclined side parallel to the inclined surface on its side near the sliding block. A roller is rotatably connected to the side of the driven block, and the roller abuts against the inclined surface.

[0018] A telescopic cylinder is fixed to the mounting base plate, and the telescopic end of the telescopic cylinder is fixedly connected to the end of the sliding block away from the first movable side plate.

[0019] Optionally, alignment blocks are detachably connected to the first movable side plate and the second movable side plate.

[0020] Optionally, the fixed side opposite to the second movable side plate is a limiting plate. The limiting plate slides on the bearing base and is symmetrically arranged in two, with the insertion interface formed between the two limiting plates.

[0021] Optionally, the socket has a frame-shaped structure, the plug fixing member slides in the frame, the socket has an elongated hole along the length direction, the plug fixing member has a rotating shaft fixed on it, the rotating shaft slides in the elongated hole, and a positioning block is rotatably connected to the end of the rotating shaft away from the plug fixing member.

[0022] The positioning block has a positioning groove, and the plug is connected to a positioning insert. The positioning insert is inserted into the positioning groove and is interference-fitted with the positioning groove.

[0023] Optionally, the connector is provided with mounting seats at both ends along its length, and a fixing rod is fixed on the mounting seat. The positioning insert is movably passed through the fixing rod on both sides, and a second spring is sleeved on the fixing rod.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This utility model provides an optical modem testing device. A positioning cavity is formed by a first movable side plate, a second movable side plate, and two fixed sides, into which the optical modem can be placed for positioning. A positioning drive unit moves the first and second movable side plates simultaneously towards or away from the center of the positioning cavity, thus positioning the optical modem within the cavity for easy testing. Furthermore, the width and length of the positioning cavity can be adjusted, improving the compatibility with different models and sizes of optical modems. Additionally, plug fixing members are used to secure the test plug. Multiple plug fixing members slide on the connector, allowing adjustment of the spacing between adjacent plug fixing members. This ensures precise connection between the test plug and the optical modem interface when testing different models and sizes of optical modems, effectively preventing physical damage to the optical modem interface or the test plug. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0028] Figure 1 This is a schematic diagram of the structure of an optical modem testing device.

[0029] Figure 2 This is an exploded view of the structure of an optical modem testing device.

[0030] Figure 3 This is a schematic diagram of the structure of an optical modem testing device.

[0031] Figure 4This is a partial structural diagram of an optical modem testing device.

[0032] Figure 5 This is a partial structural diagram of an optical modem testing device.

[0033] Illustration: 1. Support base; 11. Groove; 12. Positioning cavity; 13. Fixed side; 2. Movable plate; 21. First movable side plate; 22. First fixed plate; 23. First guide rod; 24. Second movable side plate; 25. Second fixed plate; 26. Second guide rod; 27. First spring; 28. Alignment block; 3. Positioning drive unit; 31. Sliding block; 32. Guide block; 33. Driven block; 34. Roller; 35. Telescopic cylinder; 4. Limiting plate; 5. Auxiliary plug-in assembly; 51. Plug-in seat; 52. Plug fixing piece; 53. Positioning block; 54. Positioning insert; 55. Mounting seat; 56. Fixed rod; 57. Second spring; 6. Mounting base plate. Detailed Implementation

[0034] To make the invention's objectives, features, and advantages more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0036] This utility model provides an optical modem testing device, including a support base, a movable plate, a positioning drive unit, and an auxiliary plug-in assembly. The support base has a groove with two fixed sides, which are adjacent to each other. The movable plate is slidably connected to the support base, and a movable plate is provided opposite to each of the two fixed sides, namely a first movable side plate and a second movable side plate. The first and second movable side plates, together with the two fixed sides, form a positioning cavity. The positioning drive unit is located on the support base. When activated, the positioning drive unit can drive the first and second movable side plates to move simultaneously towards or away from the center of the positioning cavity. The auxiliary plug-in assembly is located on the support base, with a plug-in interface formed on one of the fixed sides. The auxiliary plug-in assembly is located at the plug-in interface and includes a plug socket and multiple spaced plug fixing members slidably disposed on the plug socket.

[0037] This utility model provides an optical modem testing device. A positioning cavity is formed by a first movable side plate, a second movable side plate, and two fixed sides, into which the optical modem can be placed for positioning. A positioning drive unit moves the first and second movable side plates simultaneously towards or away from the center of the positioning cavity, thus positioning the optical modem within the cavity for easy testing. Furthermore, the width and length of the positioning cavity can be adjusted, improving the compatibility with different models and sizes of optical modems. Additionally, plug fixing members are used to secure the test plug. Multiple plug fixing members slide on the connector, allowing adjustment of the spacing between adjacent plug fixing members. This ensures precise connection between the test plug and the optical modem interface when testing different models and sizes of optical modems, effectively preventing physical damage to the optical modem interface or the test plug.

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] like Figures 1-5 As shown, this utility model embodiment provides an optical modem testing device, which is used to position and fix the optical modem to be tested, and then accurately connect the test plug to the optical modem interface. It can test optical modems of different models or sizes within the compatibility range, and has the advantages of improving the compatibility range and improving the connection accuracy.

[0040] like Figure 1 , Figure 2As shown, in this embodiment, the optical modem testing device includes a support base 1, a movable plate 2, a positioning drive unit 3, and an auxiliary plug-in assembly 5. The support base 1 has a groove 11 with two fixed sides 13, which are adjacent to each other. The movable plate 2 is slidably connected to the support base 1, and a movable plate 2 is provided opposite to each of the two fixed sides 13, namely a first movable side plate 21 and a second movable side plate 24. The first movable side plate 21, the second movable side plate 24, and the two fixed sides 13 form a positioning cavity 12. The positioning drive unit 3 is provided on the support base 1. When the positioning drive unit 3 is activated, it can drive the first movable side plate 21 and the second movable side plate 24 to move simultaneously toward or away from the center of the positioning cavity 12. The auxiliary plug-in assembly 5 is provided on the support base 1. One of the fixed sides 13 has a plug interface. The auxiliary plug-in assembly 5 is provided at the plug interface and includes a plug seat 51 and a plurality of spaced plug fixing members 52 that are slidably disposed on the plug seat 51.

[0041] Specifically, the support base 1 has a plate-like structure, and the groove 11 is a recessed area formed on the upper surface of the support base 1. The groove 11 has at least two adjacent sidewalls, which are fixed sides 13. The two fixed sides 13 are perpendicular to each other and are respectively the first fixed sidewall and the second fixed sidewall. The first movable side plate 21 and the second movable side plate 24 are arranged perpendicular to each other and can slide relative to the support base 1. The first movable side plate 21 is arranged opposite to the first fixed sidewall, and the second movable side plate 24 is arranged opposite to the second fixed sidewall. The first movable side plate 21, the second movable side plate 24, the two fixed sides, and the support base 1 together form a positioning cavity 12 with an open top. During testing, the optical modem is placed in the positioning cavity 12 to position and fix the optical modem, facilitating the subsequent insertion of the test plug.

[0042] The positioning drive unit 3 can drive the first movable side plate 21 and the second movable side plate 24 to move simultaneously toward or away from the center of the positioning cavity 12. Thus, when the first movable side plate 21 and the second movable side plate 24 move, the width and length of the positioning cavity 12 can be changed, enabling the positioning cavity 12 to position optical modems of different models or sizes, which is beneficial to improving the compatibility range of the measurable optical modems.

[0043] Meanwhile, the auxiliary plug-in component 5 is used to connect the test plug to the optical modem interface after the optical modem is positioned. A notch is located on the second fixed side, which serves as a plug-in interface. The auxiliary plug-in component 5 is positioned at this interface to facilitate the connection of the test plug to the optical modem interface. The plug fixing member 52 is used to secure the test plug. Multiple plug fixing members 52 slide on the plug-in base 51, allowing adjustment of the spacing between adjacent plug fixing members 52. This ensures precise connection between the test plug and the optical modem interface when testing optical modems of different models or sizes, effectively preventing physical damage to the optical modem interface or the test plug.

[0044] Furthermore, a first fixed plate 22 parallel to the first movable side plate 21 is fixedly connected to the bearing base 1. A first guide rod 23 is provided on the first fixed plate 22, and the first movable side plate 21 slides through the first guide rod 23. A second fixed plate 25 parallel to the second movable side plate 24 is fixedly connected to the bearing base 1. A second guide rod 26 is provided on the second fixed plate 25, and the second movable side plate 24 slides through the second guide rod 26. Springs are sleeved on both the first guide rod 23 and the second guide rod 26.

[0045] Specifically, the first fixed plate 22 is bolted to the bearing base 1. The first movable side plate 21 is parallel to the first fixed plate 22 and is located between the first fixed plate 22 and the first fixed side. The first guide rod 23 is fixed to the side of the first fixed plate 22 facing the first movable side plate 21. Two first guide rods 23 are perpendicular to the first fixed plate 22 and symmetrically arranged. The first movable side plate 21 is movably inserted through the two first guide rods 23. A first spring 27 is sleeved on the first guide rod 23. One end of the first spring 27 abuts against the first fixed plate 22, and the other end abuts against the first movable side plate 21. The second fixed plate 25 and the second movable side plate 24 are arranged in the same way as the first fixed plate 22 and the first movable side plate 21. By sliding the first movable side plate 21 along the first guide rod 23 and the second movable side plate 24 along the second guide rod 26, the width and length of the positioning cavity 12 can be adjusted, thereby allowing positioning of optical modems of different models or sizes.

[0046] For example, a recessed area can be formed at the bottom of the groove 11. The first movable side plate 21 and the second movable side plate 24 are located in the recessed area. The first guide rod 23 and the second guide rod 26 are both located below the bottom of the groove 11 and pass through the bearing base 1. The upper end faces of the first movable side plate 21 and the second movable side plate 24 are positioned higher than the bottom of the groove 11. By sliding the first movable side plate 21 and the second movable side plate 24, the optical modem in the positioning cavity 12 can be clamped and positioned. Sliding the first movable side plate 21 and the second movable side plate 24 can also change the length and width of the mounting groove, which can be used to clamp and position optical modems of different sizes.

[0047] Furthermore, when the positioning drive unit 3 is not activated, the first movable side plate 21 and the second movable side plate 24 are in their initial positions. At this time, the adaptation size of the positioning cavity 12 is the minimum adaptation size.

[0048] Specifically, when the first movable side plate 21 and the second movable side plate 24 are in their initial positions, the first spring 27 is in its normal state. At this time, the width and length of the positioning cavity 12 are at their minimum values, and the optical modem that can be placed in the positioning cavity 12 is the smallest size that can be adapted.

[0049] It should be noted that both the first fixing plate 22 and the second fixing plate 25 can be fixedly connected to the bearing base 1 by bolts. If the fixing positions of the first fixing plate 22 and the second fixing plate 25 are changed, the initial positions of the first movable side plate 21 and the second movable side plate 24 can be changed, thereby changing the minimum fitting size of the positioning cavity 12. This is beneficial for further improving the compatibility range of the optical modem.

[0050] like Figure 2 , Figure 3 As shown, in this embodiment of the utility model, a mounting base 6 is provided at the bottom of the bearing base 1, and a positioning drive unit 3 is disposed between the mounting base 6 and the bearing base 1. The positioning drive unit 3 includes:

[0051] The sliding block 31 is connected to the first movable side plate 21, and a guide block 32 with an inclined surface is provided on the side of the sliding block 31 near the second sliding side plate.

[0052] Driven block 33 is connected to the second movable side plate 24. The side of driven block 33 near sliding block 31 is provided with a sloping side parallel to the inclined surface. Roller 34 is rotatably connected to the side of driven block 33 and abuts against the inclined surface.

[0053] Telescopic cylinder 35 is fixed to the mounting base plate 6, and the telescopic end of telescopic cylinder 35 is fixedly connected to the end of sliding block 31 that is away from the first movable side plate 21.

[0054] Specifically, an installation groove can be formed at the bottom of the support base 1, and a sliding block 31 is disposed in the installation groove. One end of the sliding block 31 is fixedly connected to the first movable side plate 21, and the other end is fixedly connected to the telescopic end of the telescopic cylinder 35. The telescopic cylinder 35 can drive the first movable side plate 21 to slide along the first guide rod 23. The driven block 33 is fixed on the second movable side plate 24, and the driven block 33 is arranged perpendicular to the length direction of the sliding block 31. At the same time, a guide block 32 is provided on the side of the sliding block 31 near the second movable side plate 24. The side of the guide block 32 facing the first movable side plate 21 is an inclined surface, and the side of the driven block 33 away from the second movable side plate 24 is a slanted side, which is parallel to the inclined surface of the guide block 32. Therefore, if the inclined surface of the guide block 32 is made to fit against the inclined side of the driven block 33, when the sliding block 31 slides along the first guide rod 23, the sliding block 31 will push the driven block 33 to move along the second guide rod 26, thereby enabling the first movable side plate 21 and the second movable side plate 24 to slide simultaneously. In addition, a roller 34 is rotatably provided on the inclined side of the driven block 33. The roller 34 abuts against the inclined surface of the guide block 32. The roller 34 can reduce the friction between the guide block 32 and the driven block 33, making the sliding of the first movable side plate 21 and the second movable side plate 24 smoother and more precise. Furthermore, a first spring 27 is sleeved on the first guide rod 23 and the second guide rod 26. After the first movable side plate 21 and the second movable side plate 24 move to an appropriate position, the rebound force of the first spring 27 can drive the first movable side plate 21 and the second movable side plate 24 to slide closer to the center of the positioning cavity 12, facilitating the positioning and fixing of the optical modem.

[0055] Preferably, alignment blocks 28 are detachably connected to the first movable side plate 21 and the second movable side plate 24. For example, the shape of the alignment block 28 can match the side shape of the optical modem. Depending on the shape of the optical modem, the corresponding alignment block 28 can be replaced. The optical modem and the alignment block 28 fit tightly together, which makes the positioning of the optical modem more accurate and stable.

[0056] In one exemplary embodiment of this utility model, a fixed side limiting plate 4 is provided opposite to the second movable side plate 24. Two limiting plates 4 are symmetrically arranged and slide on the bearing base 1, forming an insertion interface between the two limiting plates 4. Specifically, the limiting plate 4 is arranged opposite to the second movable side plate 24, and the sliding direction of the limiting plate 4 is parallel to the length direction of the second movable side plate 24. The limiting plate 4 does not change the width or length of the positioning cavity 12 when it slides. The insertion interface is located between the ends of the two positioning plates, where the optical modem interface and the test plug can be inserted. By sliding the two limiting plates 4, the width of the insertion interface can be adjusted to accommodate different models of optical modems.

[0057] like Figure 4 , Figure 5As shown, in this embodiment of the utility model, the plug socket 51 has a frame-shaped structure, the plug fixing member 52 slides in the frame, the plug socket 51 has an elongated hole along its length, the plug fixing member 52 has a rotating shaft fixed on it, the rotating shaft slides in the elongated hole, and the end of the rotating shaft away from the plug fixing member 52 is rotatably connected to a positioning block 53; the positioning block 53 has a positioning groove, the plug groove is connected to a positioning insert 54, the positioning insert 54 is inserted into the positioning groove and is interference-fitted with the positioning groove.

[0058] Specifically, the connector 51 is located on the side of the limiting plate 4 opposite to the second movable side plate 24. The connector 51 has a square frame structure, and the plug fixing member 52 is located inside the frame of the connector 51. An elongated hole is opened along the length of the connector 51 and communicates with the inside of the frame of the connector 51. The positioning block 53 is located outside the frame of the connector 51. The positioning block 53 and the plug fixing member 52 are connected by a rotating shaft. The rotating shaft is fixed to the plug fixing member 52 and rotatably connected to the positioning block 53. At the same time, a positioning groove is opened on the positioning block 53, and a positioning insert 54 is inserted into the positioning groove and is interference-fitted with the positioning groove. Thus, the positioning insert 54 can fix the positioning block 53 and the connector 51 relatively. The test plug is set in the plug fixing member 52. The same number of plug fixing members 52 can be set in the connector 51 according to the number of optical modem interfaces. By pushing the connector 51, multiple test plugs can be plugged in at the same time. During the insertion process, if there is a slight deviation between the optical modem interface and the test plug, the plug fixing piece 52 can be inserted at a small angle during the insertion process, and can be gradually corrected after insertion, effectively avoiding physical damage to the optical modem interface or test plug during insertion.

[0059] Furthermore, the plug-in base 51 is provided with mounting bases 55 at both ends along its length, and fixing rods 56 are fixed on the mounting bases 55. The positioning insert 54 is movably inserted through the fixing rods 56 on both sides, and a second spring 57 is sleeved on the fixing rods 56.

[0060] Specifically, the positioning insert 54 is disengaged from the positioning groove, at which point the plug fixing member 52 can slide along the elongated hole, so that the position of the plug fixing member 52 can be adjusted according to the different models of optical modems.

[0061] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An optical modem testing device, characterized in that, include: A bearing base (1) has a groove (11) on it, and the groove (11) has at least two fixed sides (13), which are adjacent sides; Movable plate (2) is slidably connected to the bearing base (1). Movable plate (2) is provided at the position opposite to the two fixed sides (13), namely the first movable side plate (21) and the second movable side plate (24). The first movable side plate (21), the second movable side plate (24) and the two fixed sides (13) form a positioning cavity (12). The positioning drive unit (3) can drive the first movable side plate (21) and the second movable side plate (24) to move simultaneously toward or away from the center of the positioning cavity (12) when the positioning drive unit (3) is activated. An auxiliary plug-in assembly (5) is provided on the support base (1), and a plug-in interface is formed on one of the fixed sides (13). The auxiliary plug-in assembly (5) is provided at the plug-in interface and includes a plug-in base (51) and a plurality of spaced plug fixing members (52) slidably disposed on the plug-in base (51).

2. The optical modem testing device according to claim 1, characterized in that, The bearing base (1) is fixedly connected to a first fixed plate (22) parallel to the first movable side plate (21), and a first guide rod (23) is provided on the first fixed plate (22). The first movable side plate (21) slides through the first guide rod (23). A second fixed plate (25) parallel to the second movable side plate (24) is fixedly connected to the bearing base (1). A second guide rod (26) is provided on the second fixed plate (25). The second movable side plate (24) slides through the second guide rod (26). Both the first guide rod (23) and the second guide rod (26) are fitted with a first spring (27).

3. The optical modem testing device according to claim 2, characterized in that, When the positioning drive unit (3) is not activated, the first movable side plate (21) and the second movable side plate (24) are in the initial position. At this time, the adaptation size of the positioning cavity (12) is the minimum adaptation size.

4. The optical modem testing device according to claim 2, characterized in that, The support base (1) has a mounting base plate (6) at its bottom, and the positioning drive unit (3) is located between the mounting base plate (6) and the support base (1). The positioning drive unit (3) includes: A sliding block (31) is connected to the first movable side plate (21), and a guide block (32) with an inclined surface is provided on the side of the sliding block (31) near the second movable side plate (24); A driven block (33) is connected to the second movable side plate (24). The driven block (33) has an inclined side parallel to the inclined surface on the side near the sliding block (31). A roller (34) is rotatably connected to the side of the driven block (33), and the roller (34) abuts against the inclined surface. A telescopic cylinder (35) is fixed to the mounting base plate (6), and the telescopic end of the telescopic cylinder (35) is fixedly connected to the end of the sliding block (31) away from the first movable side plate (21).

5. The optical modem testing device according to claim 2, characterized in that, Alignment blocks (28) are detachably connected to the first movable side plate (21) and the second movable side plate (24).

6. The optical modem testing device according to claim 1, characterized in that, The fixed side (13) opposite to the second movable side plate (24) is a limiting plate (4). The limiting plate (4) slides on the bearing base (1) and there are two symmetrically arranged. The insertion interface is formed between the two limiting plates (4).

7. The optical modem testing device according to claim 1, characterized in that, The socket (51) has a frame-shaped structure, the plug fixing member (52) slides in the frame, the socket (51) has an elongated hole along the length direction, the plug fixing member (52) has a rotating shaft fixed on it, the rotating shaft slides in the elongated hole, and the end of the rotating shaft away from the plug fixing member (52) is rotatably connected to a positioning block (53). The positioning block (53) has a positioning groove, and the plug-in seat (51) is connected to a positioning insert (54). The positioning insert (54) is inserted into the positioning groove and is interference-fitted with the positioning groove.

8. The optical modem testing device according to claim 7, characterized in that, The plug-in base (51) has mounting bases (55) at both ends along its length. A fixing rod (56) is fixed on the mounting base (55). The positioning insert (54) is movably inserted through the fixing rod (56) on both sides. A second spring (57) is sleeved on the fixing rod (56).

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