Safety protection mechanism of kilovolt line parameter measuring device

Abstract

The invention provides a safety protection mechanism of a kilovolt line parameter measuring device, and relates to the field of line devices.The safety protection mechanism of the kilovolt line parameter measuring device cuts and tests a line to be measured and comprises a box body, a sleeve nozzle is connected to the left end of the box body, and a cutting module and a test box are arranged in the box body; and a to-be-detected line sequentially passes through the sleeve nozzle and the cutting module from left to right. The safety protection mechanism of the kilovolt line parameter testing device is composed of a box body, a sleeve nozzle, a cutting module and a testing box, a line to be tested is cut and tested, the testing box is provided with a butt joint nozzle, a resistance block, an inductor, an electromagnet module, a testing module and a controller, the inductor and the resistance block are matched to detect whether an overcurrent phenomenon occurs or not, and the safety protection mechanism can be used for testing the line to be tested. And even if the knife switch is closed under the overcurrent condition, the grounding port is butted with the grounding lead, so that the current is guided to the ground. Therefore, the butt-joint circuit can be switched in time, and whether the test is safe or not can be predicted in advance. And the accident occurrence probability is further reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of line device, in particular to a safety protection mechanism of a kilovolt line parameter measurement device. BACKGROUND

[0002] Line parameter measurement refers to using professional instruments to test the power line after cutting and obtaining a series of characteristic parameters such as insulation, impedance, and capacitive reactance of the line, thereby providing a scientific basis for daily operation and maintenance. During line parameter measurement, the grounding state of each phase of the line needs to be changed repeatedly, and the parameters of each phase are tested.

[0003] Since the tested line is a kilovolt transmission line, the work process is to first stop the equipment connected to the line to be tested, then connect the line after cutting to the test device, and then perform line parameter measurement of each data. However, during the test process, the voltage is too high, which is very unsafe, and explosions and other complete accidents may occur due to overcurrent. Therefore, safety protection measures need to be established.

[0004] Traditional safety protection measures have a relatively simple structure. Only the line connection is cut off, but it is not sensitive enough to predict whether the test is safe in advance, and it cannot stop working in time, leading to accidents. SUMMARY

[0005] (I) Technical problems solved In view of the deficiencies of the prior art, the present application provides a safety protection mechanism of a kilovolt line parameter measurement device, which solves the problems raised in the background art.

[0006] (II) Technical solutions To achieve the above purpose, the present application realizes the following technical solutions: a safety protection mechanism of a kilovolt line parameter measurement device, which cuts and tests the line to be tested, comprising a box body, a sleeve nozzle connected to the left end of the box body, a cutting module and a test box arranged in the box body, and the line to be tested passes through the sleeve nozzle and the cutting module from left to right and is finally inserted into the test box.

[0007] A docking nozzle is installed on the left side of the test box, the cut line to be tested can be inserted into the docking nozzle, a chamber one and a chamber two are formed in the test box, the docking nozzle extends into the chamber one, a test module, a controller, and a battery pack are arranged on the inner wall bottom of the chamber one, an electromagnet module is connected to one side of the inner wall of the chamber one, the working end of the electromagnet module extends outside the test box, and the electromagnet module, the test module, the controller, and the battery pack are electrically connected together.

[0008] The two fixers are symmetrically arranged outside the test box, a gate is hingedly connected to the outside of the test box, the fixers are used for limiting the gate, the working end of the electromagnet module extends between the two test boxes, the butt joint mouth is electrically connected with a wire, the wire is connected with a resistance block at the end, the resistance block is electrically connected with a branch wire away from the wire, the resistance block is provided with an inductor at the bottom, and the inductor is electrically connected with the controller.

[0009] The fixer is composed of a rubber fixing sheet and an iron movable sheet, and the branch wire extends to the outside of the test box and is electrically connected with the movable sheet.

[0010] The top of the inner wall of the second chamber is connected with a vertical small electric push rod, the lower end of the small electric push rod is connected with a grounding port, the bottom of the inner wall of the second chamber is connected with a grounding wire, and the lower end of the grounding wire extends to the outside of the box body, and when the small electric push rod is stretched to the longest, the grounding port is inserted with the upper end of the grounding wire.

[0011] The grounding port and the butt joint mouth are electrically connected with a wire, and the small electric push rod is electrically connected with the controller.

[0012] The bottom of the inner wall of the box body is provided with a chip removal groove, and the chip removal groove is located on the left side of the test box.

[0013] Preferably, the inductor is in a mountain shape, the inductor is composed of three vertical vertical pipes, the three vertical vertical pipes are butt jointly communicated, a piston one is slidingly matched in the vertical pipe in the middle, the piston one is filled with carbon dioxide gas, the piston one is filled with liquid water, a piston two is slidingly matched in the vertical pipes on the two sides, a pressure detection unit is arranged on the inner wall top of the vertical pipes on the two sides, and the piston two is connected with the pressure detection unit through an elastic piece.

[0014] Preferably, the top of the vertical pipe in the middle section is connected with a temperature guide block, the temperature guide block is fixedly inserted into the resistance block, and the pressure detection unit is electrically connected with the controller.

[0015] Preferably, an active groove is arranged on the outside of the test box, the fixing sheet and the movable sheet are in an L shape, the end of the fixing sheet is connected with the test box, the end of the movable sheet is hingedly connected with the active groove, the gate is clamped through the fixing sheet and the movable sheet, a short spring is connected between the working end of the electromagnet module and the movable sheet, and a long spring is connected between the upper end of the gate and the lower half of the test box.

[0016] Preferably, the cutting module comprises a lower arc-shaped pipe, an upper arc-shaped pipe, a cutter and a slide rail, the lower arc-shaped pipe is located directly below the upper arc-shaped pipe, the lower arc-shaped pipe is connected with the left side of the inner wall of the box body, the main electric push rod is arranged at the top of the upper arc-shaped pipe, the upper arc-shaped pipe and the lower arc-shaped pipe are combined and aligned with the sleeve mouth, the length of the lower arc-shaped pipe is longer than that of the upper arc-shaped pipe, the right end of the lower arc-shaped pipe is in a slope shape, the cutter is arranged on the rear side of the upper arc-shaped pipe, the slide rail is connected with the bottom of the inner wall of the box body, and the cutter is slidingly matched with the slide rail.

[0017] Preferably, the main electric push rod, the auxiliary electric push rod, the connecting frame installed in the box, the connecting frame connected with the main electric push rod, the lower end of the main electric push rod connected with the upper arc-shaped tube, the auxiliary electric push rod arranged on the right side of the main electric push rod, the auxiliary electric push rod inclined by 45°, and the lower end of the auxiliary electric push rod connected with the cutter.

[0018] Preferably, the top of the resistance block is provided with a connecting rod connected with the top of the inner wall of the chamber.

[0019] Preferably, the left end of the sleeve nozzle is connected with a support, the support is provided with two traction wheels driven by a motor, the two traction wheels are arranged symmetrically in up and down directions, and the two traction wheels clamp the line to be measured.

[0020] The top edge of the box is provided with a door hinge, the box is symmetrically hinged with a box cover through the door hinge, and the top of the box cover is connected with a clasp.

[0021] (Three) beneficial effects The application provides a safety protection mechanism of a kilovolt line parameter measuring device. 1. The safety protection mechanism of the kilovolt line parameter measuring device is composed of a box, a sleeve nozzle, a cutting module and a test box, cuts and tests a line to be measured, the test box is provided with a butt joint nozzle, a resistance block, an inductor, an electromagnet module, a test module and a controller, the inductor and the resistance block are used in cooperation to detect whether a current overcurrent phenomenon occurs, and the grounding port is butt jointed with a grounding wire to guide the current to the ground in the case of overcurrent, so that the butt joint line is converted in time, the purpose of predicting whether the test is safe in advance is achieved, and the probability of accidents is further reduced.

[0022] 2. The safety protection mechanism of the kilovolt line parameter measuring device, the inductor is composed of three vertical pipes, the piston one, the piston two, the pressure detection unit and the elastic member are slidably matched in the vertical pipes, and the carbon dioxide gas and the liquid water are matched with the temperature guide block, when the temperature of the resistance block rises, the temperature is transmitted to the inside of the inductor, the piston one descends, the piston two rises, the pressure detection unit changes, and whether the test circuit is stable is judged according to whether the measured value reaches the preset value.

[0023] 3. The safety protection mechanism of the kilovolt line parameter measuring device, the test box is provided with a brake, a fixed sheet and a movable sheet, the test box is provided with an electromagnet module, a short spring is arranged, the movable sheet is close to the fixed sheet, so that the brake is clamped, the movable sheet is away from the fixed sheet through the electromagnet module, and the brake is turned over through the contraction of the long and short springs, the brake is away from the movable sheet, so that the function of quickly cutting off the circuit is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structure perspective view of the application. Figure 2 This is a schematic diagram of the structure and operation of the present invention; Figure 3 This is a schematic diagram of the box structure of the present invention; Figure 4 This is a schematic diagram of the cutting module structure of the present invention; Figure 5 This is a diagram showing the internal structure of the test box of the present invention; Figure 6 This is a schematic diagram of the test box structure of the present invention; Figure 7 This is a diagram illustrating the internal structure of the sensor of the present invention.

[0025] In the diagram: 1. Box body, 11. Box cover, 12. Buckle, 13. Chip removal groove, 2. Nozzle, 21. Bracket, 22. Traction wheel, 3. Cutting module, 31. Main electric actuator, 32. Auxiliary electric actuator, 33. Lower arc tube, 34. Upper arc tube, 35. Cutter, 36. Slide rail, 4. Test box, 41. Connecting nozzle, 42. Wire 1, 42.1. Branch line, 43. Wire 2, 44. Small electric actuator, 45. Grounding port, 46. Grounding wire, 47. Test module, 48. Controller, 5. Fixed plate, 51. Movable plate, 6. Knife switch, 61. Long spring, 7. Electromagnet module, 71. Short spring, 8. Resistor block, 9. Sensor, 91. Temperature conducting block, 92. Piston 1, 93. Carbon dioxide gas, 94. Piston 2, 95. Pressure detection unit, 96. Elastic element, 97. Liquid water. Detailed Implementation

[0026] This invention provides a safety protection mechanism for a kilovolt line parameter measuring device, such as... Figures 1-7 As shown, the circuit under test is cut and tested. The circuit includes a housing 1, a nozzle 2 welded to the left end of the housing 1, a cutting module 3 and a test box 4 fixedly installed inside the housing 1. The circuit under test passes through the nozzle 2 and the cutting module 3 from left to right and is finally inserted into the test box 4.

[0027] A connector 41 is fixedly installed on the left side inside the test box 4. The cut circuit to be tested can be inserted into the connector 41. The test box 4 has two chambers. The end of the connector 41 extends into the chamber 1. A test module 47, a controller 48 and a battery pack are fixedly installed on the bottom of the inner wall of the chamber 1. An electromagnet module 7 is fixedly installed on one side of the inner wall of the chamber 1. The working end of the electromagnet module 7 extends outside the test box 4. The electromagnet module 7, the test module 47, the controller 48 and the battery pack are electrically connected together.

[0028] The two fixers are symmetrically and fixedly installed outside the test box 4, and the shutter 6 is hingedly connected to the outside of the test box 4, and the fixers are used for limiting the shutter 6. The working end of the electromagnet module 7 extends between the two test boxes 4, the lead wire one 42 is electrically connected to the butt joint mouth 41, the end of the lead wire one 42 is electrically connected to the resistance block 8, and the resistance block 8 is electrically connected to the branch wire 421 away from the lead wire one 42. The inductor 9 is fixedly installed at the bottom of the resistance block 8, and the inductor 9 is electrically connected to the controller 48.

[0029] In operation, the to-be-tested lead wire passes through the sleeve mouth 2, first passes through the cutting module 3, and then the head of the to-be-tested lead wire is cut off by the cutting module 3, and then the to-be-tested lead wire is moved, so that the cut surface of the to-be-tested lead wire is inserted into the butt joint mouth 41 of the test box 4.

[0030] The fixer is composed of a rubber fixing sheet 5 and an iron movable sheet 51, and the branch wire 421 extends to the outside of the test box 4 and is electrically connected to the movable sheet 51.

[0031] The vertical small electric push rod 44 is fixedly installed at the top of the inner wall of the chamber two, the grounding port 45 is fixedly installed at the lower end of the small electric push rod 44, the grounding lead wire 46 is fixedly installed at the bottom of the inner wall of the chamber two, and the grounding lead wire 46 extends to the outside of the box body 1. When the small electric push rod 44 is stretched to the longest, the grounding port 45 is inserted into the upper end of the grounding lead wire 46.

[0032] The lead wire two 43 is electrically connected between the grounding port 45 and the butt joint mouth 41, and the small electric push rod 44 is electrically connected to the controller 48.

[0033] The chip removal groove 13 is formed in the bottom of the inner wall of the box body 1 and is located on the left side of the test box 4.

[0034] The inductor 9 is in a mountain shape, the inductor 9 is composed of three vertical pipes which are in butt joint and communication, the piston one 92 is slidingly matched in the vertical pipe in the middle, the piston one 92 is filled with carbon dioxide gas 93, and the piston one 92 is filled with liquid water 97.

[0035] The piston two 94 is slidingly matched in the vertical pipes on the two sides, the pressure detection unit 95 is fixedly installed at the top of the inner wall of the vertical pipe on the two sides, and the elastic member 96 is fixedly installed between the piston two 94 and the pressure detection unit 95.

[0036] The temperature guide block 91 is fixedly embedded at the top of the vertical pipe in the middle section, the temperature guide block 91 is fixedly inserted into the resistance block 8, and the pressure detection unit 95 is electrically connected to the controller 48.

[0037] Working principle: current flows through the resistance block 8 to the electromagnet module 7, when overcurrent occurs, the temperature of the resistance block 8 increases sharply, the high temperature is transmitted to the vertical pipe in the middle of the sensor 9 through the temperature guide block 91, the carbon dioxide gas and the thermal expansion push the piston one 92 down. The piston one 92 is pressed to squeeze the liquid water 97, the liquid water 97 flows to both sides, pushing the piston two 94 to rise and squeeze the elastic member 96, the elastic member 96 shrinks at the same time, the pressure detection unit 95 is pressed, the pressure detection unit 95 measures the value and transmits it to the controller 48. The controller 48 judges whether the electromagnet module 7 works according to the feedback value.

[0038] The test box 4 is provided with a movable slot on the outside, the fixed sheet 5 and the movable sheet 51 are L-shaped, the fixed sheet 5 is fixedly installed at the end of the test box 4, and the movable sheet 51 is hingedly connected to the movable slot, and the fixed sheet 5 and the movable sheet 51 clamp the blade 6.

[0039] The short spring 71 is welded between the working end of the electromagnet module 7 and the movable sheet 51, and the long spring 61 is welded between the upper end of the blade 6 and the lower half of the test box 4.

[0040] Under normal circumstances, the electromagnet module 7 is not powered. Through the elastic force of the short spring 71, the movable sheet 51 is close to the blade 6, and the movable sheet 51 and the fixed sheet 5 clamp the blade 6. Since the fixed sheet 5 and the movable sheet 51 are L-shaped, the end of the fixed sheet 5 and the movable sheet 51 is bent to limit the blade 6, as shown in the accompanying drawings. At this time, the long spring 61 is stretched. Figure 5

[0041] Working principle: when the sensor 9 senses that the temperature is too high, it sends information to the controller 47, and the controller 47 controls the electromagnet module 7 to generate a magnetic field, the magnetic field attracts the movable sheet 51 to deflect, the movable sheet 51 is away from the blade 6, and due to the elastic force of the long spring 61, a single fixed sheet 5 is not enough to limit the blade, the fixed sheet 5 made of rubber deforms and separates from the blade 6, and the long spring 61 shrinks to pull the blade 6 down, thereby achieving the effect of power failure.

[0042] The cutting module 3 includes a lower arc-shaped pipe 33, an upper arc-shaped pipe 34, a cutter 35 and a sliding rail 36, the lower arc-shaped pipe 33 is located directly below the upper arc-shaped pipe 34, the lower arc-shaped pipe 33 is welded to the left side of the inner wall of the box body 1, and the main electric push rod 31 is welded to the top of the upper arc-shaped pipe 34. The upper arc-shaped pipe 34 is combined with the lower arc-shaped pipe 33 and is aligned with the sleeve nozzle 2.

[0043] The length of the lower arc-shaped pipe 33 is longer than that of the upper arc-shaped pipe 34, the right end of the lower arc-shaped pipe 33 is inclined, the cutter 35 is arranged on the rear side of the upper arc-shaped pipe 34, the sliding rail 36 is welded to the bottom of the inner wall of the box body 1, and the cutter 35 is in sliding cooperation with the sliding rail 36.

[0044] ​Also including the main electric push rod 31, the auxiliary electric push rod 32, the box body 1 is fixedly installed with the connecting frame, the connecting frame is welded with the main electric push rod 31, the lower end of the main electric push rod 31 is welded with the upper arc-shaped tube 34, the auxiliary electric push rod 32 is welded on the right side of the main electric push rod 31, the auxiliary electric push rod 32 is inclined by 45°, and the lower end of the auxiliary electric push rod 32 is welded with the cutter 35.

[0045] When working, the main electric push rod 31 is elongated to make the upper arc-shaped tube 34 descend, so that the length of the lower arc-shaped tube 33 is combined with the upper arc-shaped tube 34. Then the auxiliary electric push rod 32 is elongated to push the cutter 35 to move, so that the cutter 35 performs cutting processing.

[0046] The top of the resistance block 8 is fixedly installed with the connecting rod, and the connecting rod is fixedly installed with the inner wall of the chamber.

[0047] The bracket 21 is welded on the left end of the sleeve nozzle 2, the two traction wheels 22 driven by the motor are fixedly installed in the bracket 21, the two traction wheels 22 are arranged symmetrically upward and downward, and the two traction wheels 22 hold the line to be measured.

[0048] The door hinge is fixedly installed on the top edge of the box body 1, the box cover 11 is symmetrically hinged to the box body 1 through the door hinge, and the buckle 12 is welded on the top of the box cover 11. After the two box covers 11 are combined, the horizontal rod is inserted through the buckle 12, so that the fixing effect is achieved.

[0049] As described above, the safety protection mechanism of the kilovolt line measuring device is composed of the box body 1, the sleeve nozzle 2, the cutting module 3 and the test box 4, the cutting and testing of the line to be measured are performed, the test box 4 is provided with the butt joint nozzle 41, the resistance block 8, the inductor 9, the electromagnet module 7, the test module 47 and the controller 48, the inductor 9 and the resistance block 8 are used in cooperation to detect whether the overcurrent phenomenon occurs, and the switch 6 is closed in the overcurrent condition, and the grounding port 45 is butt jointed with the grounding wire 46, so that the current is guided to the ground. The effect of timely switching the butt joint line is achieved, the purpose of predicting whether the test is safe in advance is achieved, and the probability of accidents is further reduced.

[0050] Further, the inductor 9 is composed of three vertical pipes, the piston one 92, the piston two 94, the pressure detection unit 95 and the elastic member 96 are slidably matched in the vertical pipe, and the temperature guide block 91 is matched with the carbon dioxide gas 93 and the liquid water 97, when the temperature of the resistance block 8 rises, the temperature is transmitted to the inside of the inductor 9, the piston one 92 descends, the piston two 94 rises, the pressure detection unit 95 changes, and whether the test circuit is stable is judged according to whether the measured value reaches the preset value.

[0051] Furthermore, a switch 6, a fixed plate 5, and a movable plate 51 are installed outside the test box 4. An electromagnet module 7 is installed inside the test box 4. By installing a short spring 71, the movable plate 51 is brought close to the fixed plate 5, thereby clamping the switch 6. When the electromagnet module 7 is energized, a magnetic field is generated, causing the movable plate 51 to move away from the fixed plate 5. In conjunction with the contraction of the long and short springs 61, the switch 6 is flipped, and the switch 6 moves away from the movable plate 51, thereby achieving the function of quickly cutting off the circuit.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety protection mechanism of a kilovolt line measurement device, cutting and testing a line to be measured, characterized in that: Including box (1), the left end of box (1) is connected with sleeve mouth (2), the box (1) is equipped with cutting module (3) and test box (4), the line to be measured passes through sleeve mouth (2), cutting module (3) from left to right in turn, and finally inserts into test box (4); The left side of the test box (4) is installed with a docking mouth (41), and the cut line to be measured can be inserted into the docking mouth (41). The test box (4) is provided with a chamber one and a chamber two. The docking mouth (41) extends into the chamber one. The chamber one inner wall bottom is provided with a test module (47), a controller (48) and a battery pack. The chamber one inner wall one side is connected with an electromagnet module (7). The electromagnet module (7) working end extends to the outside of the test box (4). The electromagnet module (7), test module (47), controller (48) and battery pack are electrically connected together. The test box (4) outside is symmetrically provided with two fixers. The test box (4) outside is hingedly connected with a gate knife (6). The fixer is used for limiting the gate knife (6). The electromagnet module (7) working end extends between the two test boxes (4). The docking mouth (41) is electrically connected with a wire one (42). The wire one (42) end is connected with a resistance block (8). The resistance block (8) far side from the wire one (42) is electrically connected with a branch line (421). The resistance block (8) bottom is provided with an inductor (9). The inductor (9) is electrically connected with the controller (48). The fixer is composed of a rubber fixing sheet (5) and an iron movable sheet (51). The branch line (421) extends to the outside of the test box (4) and is electrically connected with the movable sheet (51). The chamber two inner wall top is connected with a vertical small electric push rod (44). The small electric push rod (44) lower end is connected with a grounding port (45). The chamber two inner wall bottom is connected with a grounding wire (46). The grounding wire (46) lower end extends to the outside of the box (1). When the small electric push rod (44) extends to the longest, the grounding port (45) is inserted with the grounding wire (46) upper end. The grounding port (45) and the docking mouth (41) are electrically connected with a wire two (43). The small electric push rod (44) and the controller (48) are electrically connected. The box (1) inner wall bottom is provided with a chip removal groove (13). The chip removal groove (13) is located on the left side of the test box (4).

2. The safety protection mechanism of a kilovoltage line parameter measuring device according to claim 1, characterized in that: The inductor (9) is in the shape of a mountain. The inductor (9) is composed of three vertical pipes. The three vertical pipes are connected in communication. A piston one (92) is slidably fitted in the middle vertical pipe. The piston one (92) is filled with carbon dioxide gas (93). The piston one (92) is filled with liquid water (97). A piston two (94) is slidably fitted in the two side vertical pipes. The two side vertical pipes inner wall top is provided with a pressure detection unit (95). The piston two (94) and the pressure detection unit (95) are connected with an elastic member (96).

3. The safety protection mechanism of a kilovoltage lineal parameter measuring device according to claim 2, characterized in that: The middle section vertical pipe top is connected with a temperature guide block (91). The temperature guide block (91) is fixedly inserted into the resistance block (8). The pressure detection unit (95) and the controller (48) are electrically connected.

4. The safety protection mechanism of a kilovoltage lineal parameter measuring device according to claim 3, characterized in that: The test box (4) is provided with a movable slot outside, the fixed sheet (5) and the movable sheet (51) are L-shaped, the fixed sheet (5) is connected with the test box (4) at the end, the movable sheet (51) is hinged with the movable slot at the end, the fixed sheet (5) and the movable sheet (51) are used to hold the gate blade (6), the short spring (71) is connected between the working end of the electromagnet module (7) and the movable sheet (51), the long spring (61) is connected between the upper end of the gate blade (6) and the lower half of the test box (4).

5. The safety mechanism of a kilovoltage line parameter measuring device according to claim 4, characterized in that: The cutting module (3) comprises a lower arc-shaped pipe (33), an upper arc-shaped pipe (34), a cutter (35) and a slide rail (36), the lower arc-shaped pipe (33) is located directly below the upper arc-shaped pipe (34), the lower arc-shaped pipe (33) is connected with the left side of the inner wall of the box body (1), the main electric push rod (31) is arranged at the top of the upper arc-shaped pipe (34), the upper arc-shaped pipe (34) is aligned with the sleeve nozzle (2) after being combined with the lower arc-shaped pipe (33), the length of the lower arc-shaped pipe (33) is longer than that of the upper arc-shaped pipe (34), the right end of the lower arc-shaped pipe (33) is in the form of a slope, the cutter (35) is arranged at the rear side of the upper arc-shaped pipe (34), the slide rail (36) is connected with the bottom of the inner wall of the box body (1), and the cutter (35) is in sliding fit with the slide rail (36).

6. The safety mechanism of a kilovoltage line parameter measuring device according to claim 5, characterized in that: The main electric push rod (31) and the auxiliary electric push rod (32) are further included, a connecting frame is installed in the box body (1), the connecting frame is connected with the main electric push rod (31), the lower end of the main electric push rod (31) is connected with the upper arc-shaped pipe (34), the auxiliary electric push rod (32) is arranged at the right side of the main electric push rod (31), and the auxiliary electric push rod (32) is inclined at an angle of 45°.

7. The safety mechanism of a kilovoltage line parameter measuring device according to claim 6, characterized in that: The resistance block (8) is provided with a connecting rod at the top, and the connecting rod is connected with the top of the inner wall of the cavity.

8. The safety mechanism of a kilovoltage line parameter measuring device according to claim 7, characterized in that: The sleeve nozzle (2) is connected with a support (21) at the left end, two traction wheels (22) driven by a motor are arranged in the support (21), the two traction wheels (22) are arranged in a symmetrical manner, and the two traction wheels (22) hold the to-be-tested line.

9. The safety mechanism of a kilovoltage line parameter measuring device according to claim 8, characterized in that: The box body (1) is provided with a door hinge at the top edge, and the box body (1) is symmetrically hinged with a box cover (11) through the door hinge, and the box cover (11) is connected with a clasp (12) at the top.

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