Detection device for maintenance of relay protection equipment

Abstract

The invention discloses a detection device for relay protection equipment maintenance, and belongs to the technical field of relay protection equipment maintenance detection.The detection device for relay protection equipment maintenance comprises a movable bottom shell, a daily test mechanism is installed in the movable bottom shell, and the bottom of the rear end of the movable bottom shell is rotationally connected with a test wire set storage box; the center of the top of the movable bottom shell is provided with a mobile power supply assembly, each corner of the top of the movable bottom shell is fixedly connected with a supporting hollow rod, a connecting plate mechanism is fixedly connected between the tops, and the top of the connecting plate mechanism is fixedly connected with a protective shell assembly. The maintenance test mechanism and the storable clamping mechanism are designed, the to-be-tested device can be clamped and fixed by pulling the drive hard rod, and the whole maintenance test mechanism is rotated after the test is completed to enable the next second test assembly to rotate to the position of the to-be-tested device, so that various tests are rapidly realized, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of relay equipment maintenance detection, and in particular relates to a detection device for relay protection equipment maintenance. Background Art

[0002] Relay protection equipment is the core device to ensure safe operation in the power system. It is used to monitor the status of the power grid in real time and quickly identify and eliminate faults. It collects parameters such as current and voltage through measuring elements, and determines abnormalities such as short circuit and overload through logic element analysis, and then triggers the circuit breaker to trip or alarm through the executive element; the equipment covers line protection, transformer protection, busbar protection and other types, and the technology has developed from electromagnetic type, static type to modern digital type (microcomputer type); microcomputer protection is based on computer algorithms, with high-precision judgment, self-test and communication functions, and can be connected to the automation system to realize data recording and remote monitoring; the design must follow the four principles of reliability, selectivity, speed and sensitivity, and is widely used in power generation, transmission, transformation and distribution; during the normal operation of relay protection equipment, equipment maintenance and inspection are the basis for ensuring the safety of the power system, and have the functions of ensuring functional reliability, preventing chain accidents, complying with industry standards, and extending equipment life. During the inspection process of relay protection equipment maintenance, routine maintenance inspections can ensure the normal operation of the equipment, while regular overhauls are for equipment with a long service life, requiring comprehensive disassembly, cleaning, and performance testing. However, existing inspection equipment is inconvenient for staff to operate during the maintenance inspection process. Both daily simple tests and regular overhaul inspections are time-consuming and labor-intensive in the inspection process for multiple devices, resulting in low efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a detection device for maintenance of relay protection equipment.

[0004] The technical solution adopted to solve the above technical problems is: to provide a detection device for maintenance of relay protection equipment, comprising a movable bottom shell, a daily testing mechanism installed inside the movable bottom shell, and a test wire group storage box rotatably connected to the rear bottom of the movable bottom shell; A mobile power supply assembly is installed at the top center of the mobile bottom shell, and a supporting hollow rod is fixedly connected to each corner of the top of the mobile bottom shell, and a connecting plate mechanism is fixedly connected between the multiple tops; The top of the connecting plate mechanism is fixedly connected to a protective shell assembly, the connecting plate mechanism is rotatably connected to a maintenance and testing mechanism, one side of the connecting plate mechanism is fixedly rotatably connected to a retractable clamping mechanism, and the retractable clamping mechanism is mounted on the device to be tested.

[0005] Furthermore, the daily testing mechanism includes two movable guide rails fixedly connected to the inner walls of the movable bottom shell on both sides, the inner walls of the two movable guide rails are slidably connected with a rotating support rod, the front end of one side of the rotating support rod is rotatably connected with a rotating limit rod, the front ends of the two rotating support rods are rotatably connected to a multi-grooved shaft seat, a first test assembly is fixedly connected between the two multi-grooved shaft seats, and the front ends of both sides of the first test assembly are fixedly connected with two limit bars corresponding to the movable guide rails.

[0006] Through the above technical solution, when performing daily maintenance tests, pull out the first test component and then open the rotation limit rod to rotate and adjust the entire first test component. After rotating to the specified inclination angle, reset the rotation limit rod and then engage with the slot on the multi-slot shaft seat by rotating the limit rod, thereby completing the fixation of the inclination of the first test component. The daily testing mechanism installed at the bottom of the overall equipment allows staff to stand and observe. At the same time, open the test line group storage box to remove the test line group, connect one end to the first test component, and connect the other end to the relay protection device for testing. Observe whether the data is normal through the tilted first test component.

[0007] Furthermore, a plurality of slots corresponding to the rotation limiting rods are provided on one side of the multi-slot shaft seat.

[0008] Through the above technical solution, multiple grooves are at different angles, thereby enabling multi-angle fixation of the first test component, making it easier for standing staff to observe data in an inclined state.

[0009] Furthermore, the connecting plate mechanism includes a connecting plate body, the top front end of the connecting plate body is rotatably connected to a rotating frame, two test line group fixing rings are fixedly connected to the rotating frame, the top center of the connecting plate body is fixedly connected to a fixed sleeve, the top of the connecting plate body is fixedly connected to multiple fixed shells, the inner walls of the multiple fixed shells are fixedly connected to a group of first reset springs, and the other ends of the multiple groups of first reset springs are fixedly connected to an arc-shaped block.

[0010] Through the above technical solution, the rotation limit of the maintenance and testing mechanism is achieved through multiple first return springs and arc-shaped blocks, ensuring that the rotation angle can be determined each time. The other end of the test line group is fixed by two test line group fixing rings. When testing multiple devices, there is no need for staff to squat or bend down to connect the test line group at that position to the device for testing, and the overall rotating frame can be rotated and stored.

[0011] Furthermore, the protective shell assembly includes a protective shell fixedly connected to the top of the connecting plate mechanism, and a rotating clamping plate is rotatably connected to one side of the top of the protective shell.

[0012] Through the above technical solution, when the retractable clamping mechanism is folded and retracted, the rotating card plate can be rotated to engage with the top of the retractable clamping mechanism, thereby completing the fixation of the retractable clamping mechanism. At the same time, the open rotating card plate also avoids obstruction to the staff's observation, inspection and testing mechanism during overhaul.

[0013] Furthermore, the maintenance and testing mechanism includes a rotating sleeve, the bottom of the outer wall of the rotating sleeve is fixedly connected to a limiting concave ring, the top of the rotating sleeve is fixedly connected to a support plate, the top of the rotating sleeve is installed with a rotating joint, the top of the support plate is fixedly connected to multiple second test components, multiple second test components are each installed with a display component, the bottom of the support plate is fixedly connected to multiple protective sleeves, two spiral connecting wires are installed on one side of multiple second test components, and one end of multiple spiral connecting wires is installed with a test joint.

[0014] Through the above technical solution, the two test connectors that are in the position of the retractable clamping mechanism are pulled out, and a longer stroke can be provided through the spiral connecting line, so that the device to be tested can be tested. The interfaces, contacts and other positions of the device to be tested can be tested through different test connectors at the other end of the spiral connecting lines on multiple second test components. After completing one item, the two test connectors are released and reset under the spiral structure of the spiral connecting line, and then the support plate is rotated, thereby driving the rotating sleeve and the limiting concave ring at the bottom to rotate, and the arc-shaped card block is squeezed through the limiting concave ring until the arc-shaped card block is stuck in the next groove on the limiting concave ring, so that the next second test component is rotated to the position of the retractable clamping mechanism, and the next test is performed through the test connector. Multiple tests are performed in sequence, which greatly improves the detection efficiency.

[0015] Furthermore, the limiting concave ring is provided with a plurality of arc-shaped grooves corresponding to the arc-shaped clamping blocks.

[0016] Through the above technical solution, the fixing of the rotation angle is ensured, and then the multiple second test components can be rotated in sequence, and no random rotation offset will occur after fixation.

[0017] Furthermore, the retractable clamping mechanism includes a rotating plate rotatably connected to one side of the connecting plate mechanism, the bottom of the rotating plate is fixedly connected to two limiting rails, the top of the rotating plate is fixedly connected to two supporting pads, two clamping plates are slidably connected between the two limiting rails, the tops of the two clamping plates are fixedly connected to multiple clamping rods, and a second return spring is fixedly connected between the bottom of both sides of the two clamping plates and the inner wall of the limiting rails, two linkage ropes are fixedly connected between the two clamping plates, and a driving hard rod is fixedly connected between the centers of the two linkage ropes.

[0018] Through the above technical solution, during overhaul, some components in the electromechanical protection equipment are disassembled and require further precise testing. At this time, the retractable clamping mechanism is opened, the driving hard rod is pulled downward, and the two clamping plates are driven away from each other through two linkage ropes. The removed device to be tested is placed on the two support pads, and then the driving hard rod is released. The two clamping plates are reset under the action of multiple second reset springs. The elastic force provided by the second reset spring causes the clamping plates to clamp and fix the device to be tested through multiple clamping rods. Similarly, when it is subsequently disassembled, it is sufficient to pull the driving hard rod, which greatly simplifies the operation of clamping and fixing the device to be tested and improves detection efficiency.

[0019] Furthermore, the linkage rope passes through both ends of the limiting track to achieve the connection between the two clamping plates.

[0020] Through the above technical solution, it is ensured that the two clamping plates can be separated by the two linkage ropes by pulling down the driving hard rod.

[0021] Furthermore, the daily testing mechanism and the maintenance testing mechanism are electrically connected to the mobile power supply assembly through a wire assembly.

[0022] Through the above technical solution, the mobile power supply component is used to provide power to the first test component and the second test component in the daily test mechanism respectively.

[0023] The beneficial effects of the present invention are as follows: (1) The present invention designs an inspection and testing mechanism and a retractable clamping mechanism, and can control the two clamping plates by pulling the driving hard rod. The device to be tested can be quickly clamped and fixed by pulling and releasing, and the test is carried out through the test connector at that position. After the test is completed, the overall inspection and testing mechanism is rotated to rotate the next second test component to the position of the device to be tested, thereby quickly carrying out multiple tests and greatly improving the detection efficiency; (2) The present invention designs a retractable daily testing mechanism, a rotating rack and a retractable clamping mechanism, and the entire device can be folded and stored, which greatly reduces the size of the equipment. At the same time, it cooperates with the rollers at the bottom of the movable bottom shell, which is suitable for the detection and maintenance of multiple devices and can effectively improve the efficiency of maintenance and detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the transverse cross-sectional structure of the present invention; Figure 3 It is a longitudinal cross-sectional structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the movable guide rail structure of the present invention; Figure 5 It is a partial structural diagram of the daily testing mechanism of the present invention; Figure 6 This is a schematic diagram of the test lead set storage box structure of the present invention; Figure 7 It is a schematic structural diagram of the connecting plate mechanism of the present invention; Figure 8 yes Figure 7 Schematic diagram of the explosion structure; Figure 9 It is a structural diagram of the maintenance and testing mechanism of the present invention; Figure 10 It is a schematic diagram of the three-dimensional cross-sectional structure of the maintenance and testing mechanism of the present invention; Figure 11 It is a schematic diagram of the bottom structure of the maintenance and testing mechanism of the present invention; Figure 12 is a schematic diagram of the cross-sectional structure of the first return spring of the present invention; Figure 13 This is a schematic diagram of the exploded structure of the retractable clamping mechanism of the present invention; Figure 14 It is a schematic diagram of the storage and merging structure of the overall device of the present invention.

[0025] Figure numerals: 1, movable bottom shell; 2, daily test mechanism; 201, movable guide rail; 202, rotating support rod; 203, rotating limit rod; 204, multi-slot shaft seat; 205, first test assembly; 206, limit bar; 3, test line group storage box; 4, mobile power assembly; 5, supporting hollow rod; 6, connecting plate mechanism; 601, connecting plate body; 602, rotating frame; 603, test line group fixing ring; 604, fixing sleeve; 605, fixing shell; 606, first return spring; 607, arc-shaped block; 7, protective shell assembly; 71, protective Protective shell; 72, rotating clamping plate; 8, inspection and testing mechanism; 801, rotating sleeve; 802, limiting concave ring; 803, supporting plate; 804, rotating joint; 805, second test component; 806, display component; 807, protective sleeve; 808, spiral connecting line; 809, test joint; 9, retractable clamping mechanism; 901, rotating plate; 902, limiting track; 903, supporting pad; 904, clamping plate; 905, clamping rod; 906, second reset spring; 907, linkage rope; 908, driving hard rod; 10, device under test. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] like Figure 1-Figure 5As shown, a detection device for maintenance of relay protection equipment in this embodiment includes a movable bottom shell 1, and a daily testing mechanism 2 is installed inside the movable bottom shell 1. The daily testing mechanism 2 includes two movable guide rails 201 respectively fixedly connected to the two sides of the inner wall of the movable bottom shell 1, and the inner walls of the two movable guide rails 201 are slidably connected with a rotating support rod 202, and the front end of one side of the rotating support rod 202 is rotatably connected to a rotating limit rod 203, and the front ends of the two rotating support rods 202 are rotatably connected to a multi-slot shaft seat 204, and a first testing component 205 is fixedly connected between the two multi-slot shaft seats 204. The front ends of both sides of the first testing component 205 are fixedly connected to two limit bars 206 corresponding to the movable guide rails 201. When performing daily maintenance tests, the first testing component 205 is pulled out and then the rotating limit rod 203 is opened to test the entire first testing component 205. Perform rotation adjustment, and reset the rotation limit rod 203 after rotating to the specified inclination angle, and then engage with the slot on the multi-slot shaft seat 204 by rotating the limit rod 203, thereby completing the tilt fixation of the first test component 205, which is convenient for daily testing mechanism 2 installed at the bottom of the overall equipment, allowing staff to stand and observe, and at the same time open the test line group storage box 3 to remove the test line group, one end is connected to the first test component 205, and the other end is connected to the relay protection equipment for testing, and observe whether the data is normal by tilting the first test component 205. A plurality of slots corresponding to the rotation limit rod 203 are opened on one side of the multi-slot shaft seat 204, and the plurality of grooves are at different angles, thereby realizing multi-angle fixation of the first test component 205, making it easier for staff who stand to observe data in the tilted state, and the test line group storage box 3 is rotatably connected to the bottom rear end of the mobile bottom shell 1.

[0028] like Figures 1-8As shown, a mobile power supply assembly 4 is installed at the top center of the mobile bottom shell 1, and a supporting hollow rod 5 is fixedly connected to each corner of the top of the mobile bottom shell 1. A connecting plate mechanism 6 is fixedly connected between multiple tops, and the connecting plate mechanism 6 includes a connecting plate body 601. The top front end of the connecting plate body 601 is rotatably connected to a rotating frame 602. Two test line group fixing rings 603 are fixedly connected to the rotating frame 602. A fixing sleeve 604 is fixedly connected to the top center of the connecting plate body 601. A plurality of fixed shells 605 are fixedly connected to the top of the connecting plate body 601. A group of first return springs 606 are fixedly connected to the inner wall of each device, and the other ends of multiple groups of first return springs 606 are fixedly connected to an arc-shaped clamping block 607. The multiple first return springs 606 and the arc-shaped clamping block 607 are used to limit the rotation of the maintenance test mechanism 8, ensuring that the rotation angle can be determined each time the rotation is made. The other end of the test line group is fixed by two test line group fixing rings 603. When testing multiple devices, the staff does not need to squat or bend down to connect the test line group at that position to the device for testing, and the overall rotating frame 602 can be rotated and stored.

[0029] like Figures 1-8 As shown, the top of the connecting plate mechanism 6 is fixedly connected to a protective shell assembly 7, and the protective shell assembly 7 includes a protective shell 71 fixedly connected to the top of the connecting plate mechanism 6. The top side of the protective shell 71 is rotatably connected to a rotating clamping plate 72. When the retractable clamping mechanism 9 is folded and retracted, the rotating clamping plate 72 can be rotated to engage with the top of the retractable clamping mechanism 9, thereby completing the fixation of the retractable clamping mechanism 9. At the same time, the opened rotating clamping plate 72 also avoids obstruction to the staff's observation and maintenance of the testing mechanism 8 during overhaul.

[0030] like Figures 1-12As shown, the connecting plate mechanism 6 is rotatably connected to the maintenance and testing mechanism 8, and the maintenance and testing mechanism 8 includes a rotating sleeve 801, the bottom of the outer wall of the rotating sleeve 801 is fixedly connected to the limiting concave ring 802, the top of the rotating sleeve 801 is fixedly connected to the support plate 803, the top of the rotating sleeve 801 is installed with a rotating joint 804, the top of the support plate 803 is fixedly connected to multiple second test components 805, the multiple second test components 805 are each installed with a display component 806, the bottom of the support plate 803 is fixedly connected to multiple protective sleeves 807, one side of the multiple second test components 805 is respectively installed with two spiral connecting wires 808, and one end of the multiple spiral connecting wires 808 is respectively installed with a test connector 809, and the two test connectors 809 that are in the position of the retractable clamping mechanism 9 are pulled out, and the spiral connecting wire 808 can provide a longer stroke, so as to test the device 10 under test, and the other ends of the spiral connecting wires 808 on the multiple second test components 805 are different The test connector 809 can be used to test the interfaces, contacts and other positions of the device under test 10. After completing one test, the two test connectors 809 are loosened and reset under the spiral structure of the spiral connecting line 808, and then the support plate 803 is rotated, thereby driving the rotating sleeve 801 and the limiting recessed ring 802 at the bottom to rotate, and the arc-shaped clamping block 607 is squeezed by the limiting recessed ring 802 until the arc-shaped clamping block 607 is clamped in the next groove on the limiting recessed ring 802, thereby ensuring that the rotation angle of the entire limiting recessed ring 802 is accurately 90°, so that the next second test component 805 is rotated to a position where the clamping mechanism 9 can be accommodated, and the next test is performed through the test connector 809, and multiple tests are performed in sequence, which greatly improves the detection efficiency. A plurality of arc grooves corresponding to the arc-shaped clamping block 607 are provided on the limiting recessed ring 802, which ensures the fixation of the rotation angle, and thus multiple second test components 805 can be rotated in sequence, and there will be no arbitrary rotation offset after fixation.

[0031] like Figures 1-14As shown, one side of the connecting plate mechanism 6 is fixedly and rotatably connected to a retractable clamping mechanism 9, and the retractable clamping mechanism 9 includes a rotating plate 901 rotatably connected to one side of the connecting plate mechanism 6, the bottom of the rotating plate 901 is fixedly connected to two limiting rails 902, the top of the rotating plate 901 is fixedly connected to two supporting pads 903, two clamping plates 904 are slidably connected between the two limiting rails 902, and the tops of the two clamping plates 904 are fixedly connected to multiple clamping rods 905, and second return springs 906 are fixedly connected between the bottoms of both sides of the two clamping plates 904 and the inner walls of the limiting rails 902, and two linkage ropes 907 are fixedly connected between the two clamping plates 904, and a driving hard rod 908 is fixedly connected between the centers of the two linkage ropes 907. During overhaul, some components in the electromechanical protection equipment are disassembled and require further precise testing. At this time, the retractable clamping mechanism 9 is opened, and the driving hard rod 908 is pulled downward to pass through the two linkage ropes 907. Drive the two clamping plates 904 away from each other, place the removed device under test 10 on the two supporting pads 903, and then release the driving hard rod 908. Under the elastic force of multiple second reset springs 906, the two clamping plates 904 are reset. The elastic force provided by the second reset springs 906 enables the clamping plates 904 to clamp and fix the device under test 10 through multiple clamping rods 905. Similarly, when subsequently removing the device under test, just pull the driving hard rod 908, which greatly simplifies the operation of clamping and fixing the device under test 10, improves the detection efficiency, and The rope 907 passes through the two ends of the limiting track 902 to realize the connection between the two clamping plates 904, ensuring that the two clamping plates 904 can be separated by the two linked ropes 907 by pulling down the driving hard rod 908. The device to be tested 10 can be installed on the accommodating clamping mechanism 9. The daily test mechanism 2 and the maintenance test mechanism 8 are electrically connected to the mobile power supply assembly 4 through the wire assembly, and the mobile power supply assembly 4 provides power to the first test assembly 205 and the second test assembly 805 in the daily test mechanism 2 respectively.

[0032] The working principle of this embodiment is as follows: when performing daily maintenance tests, the first test component 205 is pulled out and then the rotation limit rod 203 is opened to rotate and adjust the entire first test component 205. After rotating to the specified inclination angle, the rotation limit rod 203 is reset and then engaged with the slot on the multi-slot shaft seat 204 by rotating the limit rod 203, thereby completing the tilt fixation of the first test component 205, which is convenient for daily testing mechanism 2 installed at the bottom of the overall equipment to allow staff to stand and observe. At the same time, the test line group storage box 3 is opened to remove the test line group, one end of which is connected to the first test component 205, and the other end is hung on the test line group fixing ring 603. In the subsequent test process, the staff only needs to connect the line group installed at one end of the test line group fixing ring 603 to the corresponding position of the relay protection device to be tested, so as to achieve rapid detection and observe whether the data is normal through the tilted first test component 205; During overhaul, some components in the electromechanical protection equipment are disassembled and require further precise testing. At this time, the retractable clamping mechanism 9 is opened, the driving hard rod 908 is pulled downward, and the two clamping plates 904 are driven away from each other through two linkage ropes 907, and the removed device under test 10 is placed on two support pads 903. Then the driving hard rod 908 is released, and the two clamping plates 904 are reset under the elastic force of multiple second reset springs 906. The elastic force provided by the second reset springs 906 causes the clamping plates 904 to clamp and fix the device under test 10 through multiple clamping rods 905, and then the two test connectors 809 that are now in the position of the retractable clamping mechanism 9 are pulled out. A longer stroke can be provided through the spiral connecting line 808, so that the device under test 10 can be tested, and the other end of the spiral connecting line 808 on multiple second test components 805 is connected. Different test connectors 809 can be used to test the interfaces, contacts and other positions of the device to be tested 10. After completing one test, the two test connectors 809 are loosened and reset under the spiral structure of the spiral connecting line 808, and then the support plate 803 is rotated, thereby driving the rotating sleeve 801 and the limiting recessed ring 802 at the bottom to rotate, and the arc-shaped clamping block 607 is squeezed through the limiting recessed ring 802 until the arc-shaped clamping block 607 is stuck in the next groove on the limiting recessed ring 802, so that the next second test component 805 is rotated to a position where the clamping mechanism 9 can be accommodated, and the next test is performed through the test connector 809. Multiple tests are performed in sequence, which greatly improves the detection efficiency.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A detection device for maintenance of relay protection equipment, comprising a movable bottom shell (1), characterized in that: A daily testing mechanism (2) is installed inside the movable bottom shell (1), and a test line group storage box (3) is rotatably connected to the bottom of the rear end of the movable bottom shell (1); A mobile power supply assembly (4) is installed at the center of the top of the mobile bottom shell (1), a supporting hollow rod (5) is fixedly connected to each corner of the top of the mobile bottom shell (1), and a connecting plate mechanism (6) is fixedly connected between the multiple tops; The top of the connecting plate mechanism (6) is fixedly connected to a protective shell assembly (7), the connecting plate mechanism (6) is rotatably connected to a maintenance and testing mechanism (8), and one side of the connecting plate mechanism (6) is fixedly rotatably connected to a retractable clamping mechanism (9), and a device to be tested (10) is installed on the retractable clamping mechanism (9).

2. The detection device for maintenance of relay protection equipment according to claim 1, characterized in that: The daily testing mechanism (2) comprises two movable guide rails (201) respectively fixedly connected to the inner walls of the movable bottom shell (1), the inner walls of the two movable guide rails (201) are slidably connected to a rotating support rod (202), the front end of one side of the rotating support rod (202) is rotatably connected to a rotating limit rod (203), the front ends of the two rotating support rods (202) are rotatably connected to a multi-grooved shaft seat (204), a first testing assembly (205) is fixedly connected between the two multi-grooved shaft seats (204), and the front ends of both sides of the first testing assembly (205) are fixedly connected to two limit bars (206) corresponding to the movable guide rails (201).

3. The detection device for maintenance of relay protection equipment according to claim 2, characterized in that: A plurality of slots corresponding to the rotation limiting rods (203) are provided on one side of the multi-slot shaft seat (204).

4. The detection device for maintenance of relay protection equipment according to claim 1, characterized in that: The connecting plate mechanism (6) includes a connecting plate body (601), the top front end of the connecting plate body (601) is rotatably connected to a rotating frame (602), two test line group fixing rings (603) are fixedly connected to the rotating frame (602), the top center of the connecting plate body (601) is fixedly connected to a fixing sleeve (604), the top of the connecting plate body (601) is fixedly connected to multiple fixing shells (605), the inner walls of the multiple fixing shells (605) are fixedly connected to a group of first return springs (606), and the other ends of the multiple groups of first return springs (606) are fixedly connected to an arc-shaped clamping block (607).

5. The detection device for maintenance of relay protection equipment according to claim 1, characterized in that: The protective shell assembly (7) comprises a protective shell (71) fixedly connected to the top of the connecting plate mechanism (6), and a rotating clamping plate (72) is rotatably connected to one side of the top of the protective shell (71).

6. The detection device for maintenance of relay protection equipment according to claim 4, characterized in that: The inspection and testing mechanism (8) comprises a rotating sleeve (801), the bottom of the outer wall of the rotating sleeve (801) is fixedly connected to a limiting concave ring (802), the top of the rotating sleeve (801) is fixedly connected to a support plate (803), the top of the rotating sleeve (801) is installed with a rotating joint (804), the top of the support plate (803) is fixedly connected to a plurality of second test components (805), the plurality of second test components (805) are each installed with a display component (806), the bottom of the support plate (803) is fixedly connected to a plurality of protective sleeves (807), one side of each of the plurality of second test components (805) is installed with two spiral connecting wires (808), and one end of each of the plurality of spiral connecting wires (808) is installed with a test joint (809).

7. The detection device for maintenance of relay protection equipment according to claim 6, characterized in that: The limiting concave ring (802) is provided with a plurality of arc-shaped grooves corresponding to the arc-shaped clamping blocks (607).

8. The detection device for maintenance of relay protection equipment according to claim 1, characterized in that: The retractable clamping mechanism (9) comprises a rotating plate (901) rotatably connected to one side of the connecting plate mechanism (6); the bottom of the rotating plate (901) is fixedly connected to two limiting rails (902); the top of the rotating plate (901) is fixedly connected to two supporting pads (903); two clamping plates (904) are slidably connected between the two limiting rails (902); the tops of the two clamping plates (904) are fixedly connected to a plurality of clamping rods (905); the bottoms of both sides of the two clamping plates (904) and the inner walls of the limiting rails (902) are fixedly connected to second return springs (906); two linkage ropes (907) are fixedly connected between the two clamping plates (904); and a driving hard rod (908) is fixedly connected between the centers of the two linkage ropes (907).

9. The detection device for maintenance of relay protection equipment according to claim 8, characterized in that: The linkage rope (907) passes through both ends of the limiting track (902) to achieve the connection between the two clamping plates (904).

10. The detection device for maintenance of relay protection equipment according to claim 1, characterized in that: The daily testing mechanism (2) and the maintenance testing mechanism (8) are electrically connected to the mobile power supply assembly (4) via a wire assembly.

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