Movable gravity lever auxiliary testing device for extra-high voltage direct current protection plug-in

Abstract

The utility model relates to the technical field of extra-high voltage direct current protection plug-in testing, and particularly discloses a movable gravity lever auxiliary testing device for an extra-high voltage direct current protection plug-in, which comprises a board card testing mechanism and an operation auxiliary mechanism, the first board card carrier, the second board card carrier and the optical module combination tool are movably installed on the metal fixing plate. The operation auxiliary mechanism is arranged on the metal fixing plate and used for driving the first board card carrier, the second board card carrier and the optical module combination tool to move. Therefore, the function type board card located on the first board card carrier is connected with the tester, the CPU type board card located on the second board card carrier is connected with the tester, and the optical modules located on the optical module combination tool are inserted into optical ports of the function type board cards at the same time. According to the utility model, the test requirements of the functional board card and the CPU board card can be met, and a plurality of optical modules can be quickly inserted into the functional board card at the same time, so that the board card test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-high voltage direct current protection plug-in testing, in particular to a movable gravity lever auxiliary testing device for an ultra-high voltage direct current protection plug-in in a power system protection and control panel cabinet. Background Art

[0002] Currently, UHVDC protection boards require testing for CPUs and functional boards. During board testing, commissioning engineers must insert dozens of optical modules into the boards under test one by one, secure the boards with screws, and place them into the commissioning mechanism. After testing is complete, the screws are loosened, the test fixture is removed, and the boards are removed. If an error message is displayed, dozens of optical modules must be removed one by one, reinserted, and recommissioned.

[0003] The installation method of the above-mentioned test fixture has the following defects:

[0004] The test fixture required manual insertion and removal of each board. UHVDC protection series CPU boards had to be secured to the debugging mechanism with screws, while functional boards required the manual insertion and removal of dozens of optical modules before testing. Consequently, each CPU board took five minutes to install and remove; each functional board tested took an average of approximately three minutes, while inserting and removing the optical module test fixture took 10 minutes, far exceeding the test time itself and significantly impacting manpower and work efficiency.

[0005] Furthermore, domestic manufacturers currently use two methods for plugging and unplugging optical module test fixtures: one-by-one plugging and unplugging, and pneumatic plugging and unplugging after integration. Both methods have drawbacks: one-by-one plugging and unplugging is extremely inefficient, while pneumatic plugging and unplugging incurs higher production costs and has uncontrollable precision. Because optical module components require high plugging and unplugging precision, pneumatic plugging and unplugging carries the risk of damaging the fixture and the board under test. Utility Model Content

[0006] In order to solve the deficiencies in the prior art, the utility model provides a movable gravity lever auxiliary test device for a UHV DC protection plug-in, which can meet the testing requirements of functional boards and CPU boards, and can quickly insert multiple optical modules into functional boards at the same time, greatly reducing the accessory installation time and improving the board testing efficiency.

[0007] The utility model adopts the following technical solutions.

[0008] A movable gravity lever-assisted testing device for an ultra-high voltage direct current protection plug-in comprises: a board test mechanism and an operation auxiliary mechanism, wherein the board test mechanism comprises: a metal fixing plate, and a board carrier 1, a board carrier 2 and an optical module combination tooling which are movably mounted on the metal fixing plate; the board carrier 1 is used for mounting functional boards and is provided with a test probe 1 connected to the functional boards; the board carrier 2 is used for mounting CPU boards and is provided with a test probe 2 connected to the CPU boards; the optical module combination tooling is installed with a plurality of optical modules; the operation auxiliary mechanism is arranged on the metal fixing plate, and is used to drive the board carrier 1, the board carrier 2 and the optical module combination tooling to move, so that the functional boards located on the board carrier 1 are connected to the tester, the CPU boards located on the board carrier 2 are connected to the tester, and the plurality of optical modules located on the optical module combination tooling are simultaneously inserted into the optical ports of the functional boards.

[0009] Preferably, the board testing mechanism also includes: a bus connection board; the bus connection board is arranged on the top of the metal fixing plate and is located between board carrier one and board carrier two; the bus connection board is connected to the tester through an adapter cable, and is used to dock with the functional board installed on board carrier one and the CPU board installed on board carrier two.

[0010] Preferably, the metal fixing plate is installed on the top of the test cabinet, and the tester is set in the test cabinet; the test cabinet is also provided with a monitoring device connected to the tester, and the monitoring device is used to monitor the status of CPU boards and functional boards.

[0011] Preferably, the operation auxiliary mechanism includes: a side pull rod and a lever locking mechanism; the optical module assembly tool is arranged on the side of the board carrier one away from the bus connection plate; the side pull rod is rotatably arranged on the top of the metal fixing plate and is on the side of the optical module assembly tool away from the board carrier one; the lever locking mechanism is arranged inside the optical module assembly tool and is connected to the side pull rod, and is used to achieve locking and disengagement with the board carrier one (3) under its own gravity and the push of the side pull rod (9).

[0012] Preferably, the lever locking mechanism includes: a gravity lever, a bearing seat and a movable seat; the bearing seat is fixedly installed inside the optical module assembly tooling; the movable seat is movably installed inside the optical module assembly tooling and is connected to a side pull rod; a connecting portion is provided on one side of the gravity lever and a downwardly protruding sharp corner is provided on the other side; the connecting portion is rotatably connected to the movable seat, and an upwardly tilted connecting hook is provided at its end, and the connecting hook is used to hook the board carrier one to achieve a locking connection with the board carrier one; the two sides of the sharp corner are used to contact the top of the bearing seat.

[0013] Preferably, the two sides of the sharp corner have different lengths, the longer side is close to the connecting portion, and the shorter side extends to the end of the gravity lever.

[0014] Preferably, one end of the side pull rod 1 is rotatably connected to the metal fixing plate, and the other end is rotatably connected to the first crank; the middle part of the side pull rod 1 passes through the optical module assembly tooling and is connected to the movable seat.

[0015] Preferably, the operation auxiliary mechanism also includes: a side pull rod 2; the side pull rod 2 is arranged on the top of the metal fixing plate and is located on the side of the board carrier 2 away from the bus connection plate; one end of the side pull rod 2 is rotatably connected to the metal fixing plate, and the other end is connected to the second crank, the middle part of the side pull rod 2 is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the board carrier 2.

[0016] Preferably, the operation auxiliary mechanism also includes: guide rail one and guide rail two; the guide rail one is arranged at the top of the metal fixing plate and is located on the side where the board carrier one is set, and is used for the board carrier one to move toward the side close to the bus connection plate; the guide rail two is arranged at the top of the metal fixing plate and is located on the side where the board carrier two is set, and is used for the board carrier two to move toward the side close to the bus connection plate.

[0017] Preferably, the operation auxiliary mechanism also includes: a first fixing mechanism for fixing functional boards: the first fixing mechanism includes: a lower pressure plate 1, a guide rod 1, a locking mechanism 1 and a locking mechanism 2; the guide rod 1 is vertically installed on the top of the board carrier 1, and there are at least two guide rods 1. The lower pressure plate 1 can be installed between at least two guide rods 1 and can move up and down to form a space for installing CPU-type boards between at least two guide rods 1 and a lower pressure plate 1; the locking mechanism 1 and the locking mechanism 2 are both arranged on the top of the board carrier 1 and distributed at different heights, and are used to connect with the lower pressure plate 1 after the lower pressure plate 1 moves to the corresponding height to lock its position.

[0018] Preferably, the operation auxiliary mechanism also includes: a second fixing mechanism for fixing the CPU type board: the second fixing mechanism includes: a lower pressure plate 2, a guide rod 2 and a locking mechanism 3; the guide rod 2 is vertically installed on the top of the board carrier 2, and there are at least two guide rods 2. The lower pressure plate 2 can be installed up and down between at least two guide rods 2, and a space for installing the CPU type board is formed between at least two guide rods 2 and one lower pressure plate 2; the locking mechanism 3 is provided at the top of the board carrier 2, and is used to connect with the lower pressure plate 2 moved into place to lock its position.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1) The present invention is capable of installing CPU boards and functional boards respectively by providing board carrier 1 and board carrier 2, and providing test probes 1 and 2 on board carrier 1 and board carrier 2, so that functional boards and CPU boards can download test programs. The present invention drives board carrier 1 and board carrier 2 to move by operating an auxiliary mechanism, connecting CPU boards and functional boards to a tester, thereby meeting the testing requirements of functional boards and CPU boards. At the same time, the optical module assembly tool provided by the present invention is provided with multiple optical modules, and multiple optical modules can be simultaneously inserted into the optical ports of functional boards, greatly reducing the time for installing accessories and improving the efficiency of board testing.

[0021] 2) The present invention is also provided with a lever locking mechanism, which can lock the optical module assembly tooling and the board carrier 1 after the optical module is inserted into the functional board, so as to facilitate the continued movement of the functional board and the board carrier 1 through the side pull rod 1, so that the functional board is in contact with the bus connection board. When the functional board test is completed, the optical module assembly tooling and the board carrier 1 can be automatically disengaged through the action of the side pull rod 1 and the lever locking mechanism, so that the optical module assembly tooling can continue to be driven to move by the side pull rod 1, so that the optical module is pulled out of the optical port and restored to its original position. The entire process only relies on the gravity of the lever itself and the pulling force of the side pull rod 1, without the need for additional pneumatic, electric and other auxiliary parts, and the one-time moving test tooling effectively saves labor costs and production costs.

[0022] 3) The present invention is also provided with auxiliary operating mechanisms such as guide rail 1, guide rail 2, first fixing mechanism and second fixing mechanism. By operating these auxiliary mechanisms, the board to be tested can be quickly plugged in and out, and the stability between the board to be tested and the tooling can be improved, thereby reducing false alarms during testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a 3D structural diagram of a movable gravity lever auxiliary test device for a UHVDC protection plug-in disclosed in an embodiment of the present utility model;

[0024] Figure 2 This is a schematic top view of the structure of a movable gravity lever auxiliary test device for a UHVDC protection plug-in disclosed in an embodiment of the present utility model;

[0025] Figure 3 This is a side structural diagram of a movable gravity lever auxiliary test device for a UHVDC protection plug-in disclosed in an embodiment of the present utility model;

[0026] Figure 4 This is a schematic diagram of the 3D structure of a movable gravity lever inside a movable gravity lever auxiliary test device for a UHV DC protection plug-in disclosed in an embodiment of the present utility model.

[0027] Description of the reference numerals in the accompanying drawings:

[0028] 1. Optical module assembly tooling; 2. Bus connection board; 3. Board carrier 1; 4. Board carrier 2; 5. Debugger; 6. Monitoring device; 7. Test probe 1; 8. Test probe 2; 9. Side pull rod 1; 10. Side pull rod 2; 11. Lower pressure plate 1; 12. Lower pressure plate 2; 13. Guide rail 1; 14. Guide rail 2; 15. Guide rod 1; 16. Guide rod 2; 17. Locking mechanism 1; 18. Locking mechanism 2; 19. Lever locking mechanism; 19-1. Gravity lever; 19-2. Bearing seat; 19-3. Sharp corner; 19-4. Rotating axis; 19-5. Moving seat. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without making any creative efforts are all within the scope of protection of the present invention.

[0030] like Figure 1 、 Figure 2 and Figure 3 As shown, the utility model provides a movable gravity lever auxiliary testing mechanism for a UHVDC protection plug-in, which includes a board testing mechanism and an operation auxiliary mechanism.

[0031] The board test mechanism includes: a metal fixing plate, an optical module assembly tooling 1, a bus connection board 2, a board carrier 1 3, a board carrier 2 4, a debugger 5, a monitoring device 6, a test probe 1 7, a test probe 2 8, a transfer cable, and a circuit system.

[0032] The metal fixing plate is installed on the top of the test cabinet, and the bus connection plate 2 is fixedly installed in the middle position of the top of the metal fixing plate and is connected to the debugger 5 set on the test cabinet through a switching cable.

[0033] Board carrier 2 (4) is used to mount CPU boards and is equipped with test probes (8) for connecting to the CPU boards. Board carrier 2 (4) is removably mounted on top of a metal mounting plate and located on one side of bus connection board 2. It drives test probes (8) into contact with the download port on bus connection board 2, thereby connecting to the tester (5) via bus connection board 2 and the adapter cable.

[0034] The board carrier 1 3 is used to install functional boards. One side of the functional board is provided with a test probe 2 7 , and the other side is provided with multiple optical ports for inserting optical modules.

[0035] An optical module assembly tool 1 is movably installed on the top of the metal fixing plate and located on the side of the board carrier 3 away from the bus connection board 2. The optical module assembly tool 1 is provided with multiple optical modules corresponding to the optical ports on the functional boards. The optical module assembly tool 1 is used to drive multiple optical modules to be inserted into the various optical ports of the functional boards at the same time, which greatly simplifies the installation steps of the optical modules, saves installation time, and improves the testing efficiency of the functional boards.

[0036] The board carrier 1 3 is movably mounted on the top of the metal fixing plate and is located on the other side of the bus connection board 2, and is used to drive the test probe 2 7 to contact the download interface of the bus connection board 2, so that the test probe 1 7 is connected to the tester 5 under the action of the bus connection board 2 and the adapter cable.

[0037] The test cabinet is further provided with a monitoring device 6 , and the debugger 5 is connected to the monitoring device 6 . The debugging work of the board to be tested is started by operating the debugger 5 , and the status of the board to be tested is monitored through the monitoring device 6 .

[0038] The operation auxiliary mechanism includes: side pull rod 1 9, side pull rod 2 10, a first fixing mechanism, a second fixing mechanism, a guide rail 13, a guide rail 2 14, a locking mechanism 1 17, a locking mechanism 2 18, a locking mechanism 3 and a lever locking mechanism 19.

[0039] Among them, guide rail 13 is set at the top of the metal fixing plate and is located on the side where board carrier 1 3 is set, and is used to allow board carrier 1 3 to move toward the side close to the bus connection plate 2; guide rail 2 14 is set at the top of the metal fixing plate and is located on the side where board carrier 2 4 is set, and is used to allow board carrier 2 4 to move toward the side close to the bus connection plate 2.

[0040] In a preferred but non-limiting embodiment of the present invention, two guide rails 13 are provided, the two guide rails 13 are parallel to each other, and are distributed on the front and back sides of the metal fixing plate, and the bottom of the board carrier 4 is slidably connected to the two guide rails 13; two guide rails 2 14 are provided, the two guide rails 2 14 are parallel to each other, and are distributed on the front and back sides of the metal fixing plate, and the bottom of the board carrier 2 4 is slidably connected to the two guide rails 2 14.

[0041] The second fixing mechanism is movably mounted on the top of the board carrier 2 4 and is used to fix the CPU-type board. The second fixing mechanism includes: a lower pressing plate 2 12 and a guide rod 2 16. The guide rod 2 16 is vertically mounted on the top of the board carrier 2 4. There are at least two guide rods 2 16. The lower pressing plate 2 12 is movably mounted between the at least two guide rods 2 16, and a space for installing the CPU-type board is formed between the at least two guide rods 2 16 and one lower pressing plate 2 12. A second handle is also provided on the top of the lower pressing plate 2 12. The second handle is used to press the lower pressing plate 2 12 so that the lower pressing plate 2 12 presses the CPU-type board, thereby fixing the CPU-type board on the board carrier 2 4.

[0042] The locking mechanism 3 is arranged on the top of the board carrier 2 4 , and is used to connect with the lower pressing plate 2 12 after it is moved into position to lock its position.

[0043] The first fixing mechanism is movably mounted on the top of the card carrier 3 and is used to secure functional cards. This fixing mechanism includes a lower pressing plate 11 and a guide rod 15. The guide rods 15 are vertically mounted on the top of the card carrier 3. There are at least two guide rods 15, and the lower pressing plate 11 is movably mounted between the at least two guide rods 15. A space for mounting CPU cards is formed between the at least two guide rods 15 and the lower pressing plate 11.

[0044] A first handle is further provided on the top of the lower pressing plate 11 , and the lower pressing plate 11 is pressed by the first handle so that the lower pressing plate 11 presses the functional board and card, thereby fixing the functional board and card on the board carrier 3 .

[0045] In a preferred but non-limiting embodiment of the present invention, the first fixing mechanism further comprises: a locking mechanism 1 and a locking mechanism 2. Locking mechanism 1 17 and locking mechanism 2 18 are both disposed on top of card carrier 1 3 and located at different heights, corresponding to the first and second layers, respectively. The two layers may be separated by a partition. These locking mechanisms are used to connect with lower pressing plate 1 11 and lock its position when lower pressing plate 1 1 moves to the heights corresponding to the first and second layers, respectively.

[0046] Side tie rod 1 (9) is mounted on top of the metal mounting plate, on the side of card carrier 1 (3) away from bus connection plate 2. One end of side tie rod 1 (9) is pivotally connected to the metal mounting plate, while the other end is pivotally connected to the first crank. The middle portion of side tie rod 1 (9) passes through optical module assembly tooling 1 and connects to lever locking mechanism 19.

[0047] like Figure 4As shown, the lever locking mechanism 19 comprises a gravity lever 19-1, a bearing seat 19-2, and a movable seat 19-5. The movable seat 19-5 is movably mounted within the optical module assembly 1 and connected to the side tie rod 9. A sliding groove is provided within the optical module assembly 1 to limit the movement path of the movable seat 19-5. The bearing seat 19-2 is fixedly mounted within the optical module assembly 1.

[0048] Gravity lever 19-1 has a connecting portion on one side and a downward-protruding sharp corner 19-3 on the other. The connecting portion is rotatably connected to movable base 19-5, and an upward-curving connecting hook is provided at its end. The connecting hook is used to hook into a slot provided at the bottom of board carrier 3, thereby achieving a locking connection between optical module assembly tool 1 and board carrier 3. The two sides of sharp corner 19-3 are of different lengths, with the long side closer to the connecting portion and the short side extending to the end of gravity lever 19-1. The two sides of sharp corner 19-3 are used to contact the top of bearing seat 19-2.

[0049] When the side tie rod 1 9 is in the initial state, that is, the optical module assembly tool 1 is in Figure 1 When it is at the rightmost position, the top roller of the bearing seat 19-2 is in contact with the long side of the sharp corner 19-3; when the side pull rod 19 is turned to the left, the movable seat 19-5 is acted upon by the thrust and moves to the left together with the side pull rod 19, so that the top roller of the bearing seat 19-2 gradually moves from the long side of the sharp corner 19-3 to the short side. In this process, the connecting hook moves to the left while rotating downward, and drives the optical module assembly tooling 1 to move to the left at the same time through the movable seat 19-5, until the multiple optical modules located in the optical module assembly tooling 1 are inserted into the optical ports of the functional boards, the connecting hook just rotates upward to hook the slot at the bottom of the board carrier 3, so that the gravity lever 19-1 is locked and connected with the board carrier 3.

[0050] Continue to rotate the side pull rod 9 to drive the board carrier 3 and the functional board to move closer to the bus connection board 2 through the gravity lever 19-1 until the functional board contacts the bus connection board 2. At this time, the functional board can be tested.

[0051] After the test is completed, by turning the side pull rod 19 to the right, the movable seat 19-5 and the gravity lever 19-1 can be driven to move to the right at the same time. At this time, the top roller of the bearing seat 19-2 gradually moves from the short side of the sharp corner 19-3 to the long side; when the bearing seat 19-2 reaches the position of the sharp corner 19-3, the gravity lever 19-1 has driven the functional board to separate from the bus connection board 2, and at the same time, the connecting hook is disengaged from the slot of the board carrier 3; when the bearing seat 19-2 rolls on the long side of the sharp corner 19-3, the side pull rod 19 continues to drive the movable seat 19-5 and the optical module assembly tooling 1 to move. At this time, the optical module gradually disengages from the board carrier 3, so that the optical module is pulled out from the optical port, and the optical module assembly tooling 1 continues to move to restore the initial position driven by the side pull rod 19.

[0052] The side pull rod 2 10 is set on the top of the metal fixing plate and is located on the outside of the guide rail 2 14. One end of it is rotatably connected to the metal fixing plate, and the other end is connected to the second crank. The middle part of the side pull rod 2 10 is rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is rotatably connected to the board carrier 2 4.

[0053] Hold the second crank and turn the side pull rod 2 10 to the right, and drive the board carrier 2 4 on the guide rail 2 14 toward the bus connection board 2 through the connecting rod, and finally fix the CPU board to be tested to the test position, that is, the position where the CPU board is in contact with the bus connection board 2. At this time, the CPU board is installed and the test starts.

[0054] After the test is completed, the CPU board can be separated from the bus connection board 2 by pulling the side lever 2 10 in the opposite direction, and the board carrier 2 4 can be restored to its initial position.

[0055] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0056] 1) The present invention utilizes a first board carrier and a second board carrier to separately mount CPU boards and functional boards. These boards are then connected to a tester via the first and second boards, meeting the testing requirements for both functional and CPU boards. Furthermore, the present invention incorporates an optical module assembly fixture equipped with multiple optical modules, enabling simultaneous insertion of multiple optical modules into the optical ports of functional boards, significantly reducing accessory installation time and improving board testing efficiency.

[0057] 2) The present invention is also provided with a lever locking mechanism, which can lock the optical module assembly tooling and the board carrier 1 after the optical module is inserted into the functional board, so as to facilitate the continued movement of the functional board and the board carrier 1 through the side pull rod 1, so that the functional board is in contact with the bus connection board 2. After the functional board test is completed, the optical module assembly tooling and the board carrier 1 can be automatically disengaged through the action of the side pull rod 1 and the lever locking mechanism, so that the optical module assembly tooling can continue to be driven to move by the side pull rod 1, so that the optical module is pulled out of the optical port and restored to its original position. The entire process only relies on the gravity of the lever itself and the pulling force of the side pull rod 1, without the need for additional pneumatic, electric and other auxiliary parts. The test tooling can be moved once, effectively saving labor costs and production costs.

[0058] 3) The present invention is also provided with auxiliary operating mechanisms such as side pull rods, guide rails and fixing mechanisms. By operating these auxiliary mechanisms, the board to be tested can be quickly plugged in and out, and the stability between the board to be tested and the tooling can be improved, reducing false alarms during testing.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A movable gravity lever auxiliary test device for a UHVDC protection plug-in, comprising: The board test mechanism and operation auxiliary mechanism are characterized by: The board card testing mechanism comprises: a metal fixing plate, and a board card carrier 1 (3), a board card carrier 2 (4) and an optical module assembly tool (1) movably mounted on the metal fixing plate; The first board carrier (3) is used to install a functional board and is provided with a first test probe (7) connected to the functional board; the second board carrier (4) is used to install a CPU board and is provided with a second test probe (8) connected to the CPU board; the optical module assembly tool (1) is provided with a plurality of optical modules; The operation auxiliary mechanism is arranged on the metal fixing plate and is used to drive the board carrier one (3), the board carrier two (4) and the optical module assembly tool (1) to move, so that the functional board located on the board carrier one (3) is connected to the tester (5), the CPU board located on the board carrier two (4) is connected to the tester (5), and multiple optical modules located on the optical module assembly tool (1) are simultaneously inserted into the optical ports of the functional boards.

2. The movable gravity lever auxiliary test device for the UHVDC protection plug-in according to claim 1 is characterized in that: The board test mechanism further comprises: a bus connection board (2); The bus connection board (2) is arranged on the top of the metal fixing plate and is located between the first board carrier (3) and the second board carrier (4); the bus connection board (2) is connected to the tester (5) through a switching cable and is used to connect with the functional board installed on the first board carrier (3) and the CPU board installed on the second board carrier (4).

3. The movable gravity lever auxiliary test device for the UHVDC protection plug-in according to claim 2 is characterized in that: The metal fixing plate is installed on the top of the test cabinet, and the tester (5) is arranged in the test cabinet; The test cabinet is also provided with a monitoring device (6) connected to the tester (5), and the monitoring device (6) is used to monitor the status of the CPU type board and the functional type board.

4. The movable gravity lever auxiliary test device for the UHVDC protection plug-in according to claim 3 is characterized in that: The operation auxiliary mechanism includes: a side pull rod (9) and a lever locking mechanism (19); The optical module assembly tool (1) is arranged on a side of the board carrier (3) away from the bus connection board (2); The side pull rod (9) is rotatably arranged on the top of the metal fixing plate and is located on the side of the optical module assembly tool (1) away from the board carrier (3); The lever locking mechanism (19) is arranged inside the optical module assembly tooling (1) and is connected to the side pull rod (9) to achieve locking and disengagement with the board carrier (3) under its own gravity and the push of the side pull rod (9).

5. The movable gravity lever auxiliary test device for the UHVDC protection plug-in according to claim 4 is characterized in that: The lever locking mechanism (19) includes: a gravity lever (19-1), a bearing seat (19-2) and a movable seat (19-5); the bearing seat (19-2) is fixedly installed inside the optical module assembly tool (1); the movable seat (19-5) is movably installed inside the optical module assembly tool (1) and is connected to the side pull rod (9); The gravity lever (19-1) is provided with a connecting portion on one side and a downwardly protruding sharp corner (19-3) on the other side; the connecting portion is rotatably connected to the movable seat (19-5), and an upwardly tilted connecting hook is provided at its end, and the connecting hook is used to hook the board carrier (3) to achieve a locking connection with the board carrier (3); the two sides of the sharp corner (19-3) are used to contact the top of the bearing seat (19-2).

6. The movable gravity lever auxiliary test device for the UHVDC protection plug-in according to claim 5, characterized in that: The two sides of the pointed corner (19-3) are of different lengths, with the long side being close to the connecting portion and the short side extending to the end of the gravity lever (19-1).

7. The movable gravity lever auxiliary test device for the UHVDC protection plug-in according to claim 5, characterized in that: One end of the side pull rod (9) is rotatably connected to the metal fixing plate, and the other end is rotatably connected to the first crank; the middle part of the side pull rod (9) passes through the optical module assembly tooling (1) and is connected to the movable seat (19-5).

8. The movable gravity lever-assisted test device for the UHVDC protection plug-in according to claim 2 or 3, characterized in that: The operation auxiliary mechanism further includes: a second side pull rod (10); The side pull rod 2 (10) is arranged on the top of the metal fixing plate and is located on the side of the board carrier 2 (4) away from the bus connection plate (2); one end of the side pull rod 2 (10) is rotatably connected to the metal fixing plate, and the other end is connected to the second crank; the middle part of the side pull rod 2 (10) is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the board carrier 2 (4).

9. The movable gravity lever auxiliary test device for the UHVDC protection plug-in according to claim 2 or 3, characterized in that: The operation auxiliary mechanism further comprises: a guide rail 1 (13) and a guide rail 2 (14); The guide rail 1 (13) is arranged on the top of the metal fixing plate and is located on the side where the board carrier 1 (3) is arranged, and is used for allowing the board carrier 1 (3) to move toward the side close to the bus connection plate (2); The second guide rail (14) is arranged on the top of the metal fixing plate and is located on the side where the second board carrier (4) is arranged, and is used for allowing the second board carrier (4) to move toward the side close to the bus connection plate (2).

10. The movable gravity lever-assisted test device for the UHVDC protection plug-in according to any one of claims 1 to 3, characterized in that: The operation auxiliary mechanism further includes: a first fixing mechanism for fixing the functional board card; The first fixing mechanism includes: a lower pressing plate (11), a guide rod (15), a locking mechanism (17) and a locking mechanism (18); the guide rod (15) is vertically installed on the top of the board carrier (3), and there are at least two guide rods (15). The lower pressing plate (11) can be installed between the at least two guide rods (15) so as to move up and down, and a space for installing a CPU type board is formed between the at least two guide rods (15) and a lower pressing plate (11); the locking mechanism (17) and the locking mechanism (18) are both arranged on the top of the board carrier (3) and distributed at different heights, and are used to connect with the lower pressing plate (11) when the lower pressing plate (11) moves to the corresponding height to lock its position.

11. The movable gravity lever-assisted test device for a UHVDC protection plug-in according to any one of claims 1 to 4, characterized in that: The operation auxiliary mechanism also includes: a second fixing mechanism for fixing the CPU type board; The second fixing mechanism comprises: a second lower pressing plate (12), a second guide rod (16) and a third locking mechanism; The guide rod 2 (16) is vertically installed on the top of the board carrier 2 (4), and there are at least two guide rods 2 (16). The lower pressure plate 2 (12) can be installed between at least two guide rods 2 (16) and can be moved up and down. A space for installing a CPU-type board is formed between at least two guide rods 2 (16) and one lower pressure plate 2 (12); the locking mechanism 3 is set on the top of the board carrier 2 (4) and is used to connect with the lower pressure plate 2 (12) that has moved into place to lock its position.

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