An electric grounding switch with interlocking mechanism

Abstract

The present invention discloses an electric grounding switch with an interlocking mechanism, which relates to the technical field of electric grounding switches, and comprises a grounding switch body, a switch cabinet, and a switch main shaft, wherein a built-in groove is provided on one inner wall of the switch cabinet. The electric grounding switch with an interlocking mechanism, when driven by electric means, can make the manual gear move a certain distance, at which point even if the operating handle is inserted, the driving notch cannot be connected to the insertion notch, and at the same time, the baffle can be driven to rise and the insertion hole can be blocked by the support plate, so that the operating handle cannot be inserted during the electric driving process, and when the electric operation is accidentally started during the manual operation process, the baffle cannot rise due to the operating handle, so that the driving gear and the driven gear cannot mesh, thereby achieving a restriction to prevent the electric operation during the manual operation process, thereby ensuring the safety performance of the grounding switch when in use.

Description

Technical Field

[0001] The invention relates to the technical field of electric grounding switches, in particular to an electric grounding switch with an interlocking mechanism. Background Art

[0002] A grounding switch is a mechanical grounding device that releases the static charge of the equipment and circuit being repaired and ensures the personal safety of maintenance personnel during power outages. It can withstand current for a certain period of time under abnormal conditions (such as short circuits), but does not pass load current under normal conditions. It is usually part of an isolating switch. Grounding switches are usually used for equipment maintenance and troubleshooting in high-voltage, medium-voltage and other power systems. Compared with temporary grounding wires, grounding switches can quickly and effectively ground equipment or circuits to ensure the safety of maintenance personnel.

[0003] At present, with the continuous development of the power market, customers have higher and higher requirements for the intelligence and safety of switchgear. In order to meet the needs of realizing grounding function over long distances, the application of electric grounding switches is becoming more and more extensive. Compared with the traditional manual use of the grounding switch operating handle on the end of the operating shaft, the operating shaft is rotated to drive the switch main shaft to realize the closing and opening of the grounding switch. The use of a motor to directly drive the switch main shaft to rotate can more conveniently inspect and repair the internal equipment.

[0004] In order to ensure the safety of the operation process, the grounding switch needs an external interlocking mechanism to meet some necessary requirements for manual and electric operation. At present, the conventional interlocking mechanism without electric operation is very mature, but the existing interlocking mechanism generally does not restrict simultaneous manual and electric operation, so that the grounding switch can be manually operated simultaneously with electric operation, which may cause misoperation, hidden dangers in use, and prone to safety accidents. Summary of the invention

[0005] The object of the present invention is to provide an electric grounding switch with an interlocking mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: an electric earthing switch with an interlocking mechanism, comprising an earthing switch body, a switch cabinet, and a switch spindle, wherein a built-in groove is provided on an inner wall of one side of the switch cabinet, and an insertion hole is provided through the inner wall of the built-in groove, and an operating handle is provided on the inner wall of the insertion hole;

[0007] The outer wall of the switch spindle is provided with a switching limiting mechanism, so that when the electric operation is performed, the driving connection between the manual operation and the switch spindle can be disconnected, and when the manual operation is performed, the driving connection between the electric operation and the switch spindle can be disconnected;

[0008] A protective alarm mechanism is arranged inside the switch main shaft so as to give an alarm prompt to the operator when the electric operation is accidentally started during the manual operation.

[0009] Preferably, the switching limiting mechanism includes a support plate, and the support plate is rotatably connected to a side wall of the built-in groove, and the support ring is fixedly connected to a side wall of the built-in groove with a manual gear, one end of the operating handle is provided with a driving slot, and an insertion slot is provided on an end surface of the manual gear facing the built-in groove corresponding to the driving slot, and the outer wall of the switch main shaft is fixedly connected to a driven gear 1, and one side of the driven gear 1 is meshed and matched with one side of the manual gear.

[0010] Preferably, the outer wall at the other end of the switch main shaft is fixedly connected to a driven gear 2, a driving motor is fixedly installed on one side of the grounding switch body, and an output shaft at one end of the driving motor is fixedly connected to a driving gear corresponding to the driven gear 2, one side of the driving gear is meshed and matched with one side of the driven gear 2, a bracket is fixedly connected to an inner wall on one side of the switch cabinet, and an iron core is fixedly connected to the inside of the bracket corresponding to the switch main shaft, and an electromagnetic coil is fixedly installed on the outer wall of the iron core.

[0011] Preferably, a limiting groove is provided on the outer wall of one end of the switch main shaft close to the built-in groove, a rotating groove is provided inside the support plate, and the inner wall of the rotating groove rotates in fit with the inner wall of the limiting groove, a fixing rod is symmetrically fixedly connected to the outer wall of the support plate facing the built-in groove, and the other end of the fixing rod is hinged with a connecting rod, and the other end of the connecting rod is hinged with a baffle corresponding to the insertion hole.

[0012] Preferably, the outer wall of the baffle plate facing the built-in groove slides in contact with the inner wall of the built-in groove, and the inner wall of the built-in groove is symmetrically provided with limiting grooves corresponding to the baffle plate, and the outer walls on both sides of the baffle plate slide in contact with the inner walls of the limiting grooves.

[0013] Preferably, a tension spring is fixedly connected to the bottom of the baffle, and the other end of the tension spring is fixedly connected to the inner wall of the built-in groove, and the baffle forms a telescopic structure with the built-in groove through the tension spring.

[0014] Preferably, the protective alarm mechanism includes an alarm light, and one side of the alarm light is fixedly mounted on an end portion of the switch main shaft facing the built-in groove, a through groove is penetrated through the end portion of the switch main shaft, and a magnetic column is slidably connected to the inner wall of the through groove, a trigger button is provided on the side of the alarm light facing the magnetic column, a groove is symmetrically provided on the outer wall of an end portion of the magnetic column close to the alarm light, a spring is fixedly connected to the inner wall of the groove, and a block is fixedly connected to the other end of the spring.

[0015] Preferably, the outer wall of the clamping block is fitted and slid with the inner wall of the groove, and the inner wall of the through groove is symmetrically provided with clamping grooves corresponding to the clamping block.

[0016] Preferably, the clamping block forms a telescopic structure with the groove through a spring, and one end of the clamping block is set on the inner wall of the groove by being squeezed by the spring, and the ends of the two clamping blocks that are away from each other are in a truncated cone shape.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When using the electric earthing switch, when it is driven by electricity, the switch main shaft can be adsorbed through the cooperation of the iron core and the electromagnetic coil, so that the driving gear and the driven gear are meshed for electric operation. At this time, the manual gear will be synchronously driven to move a distance. At this time, even if the operating handle is inserted, the driving slot and the insertion slot cannot be connected. At the same time, the baffle can be driven to rise and the insertion hole can be blocked through the support plate, so that the operating handle cannot be inserted during the electric driving process, thereby forming a restriction to prevent manual operation during the electric operation process. At the same time, when the electric operation is accidentally started during the manual operation process, the baffle cannot rise due to the operating handle, so that the driving gear and the driven gear cannot be meshed, thereby achieving a restriction to prevent electric operation during the manual operation process, thereby ensuring the safety performance of the earthing switch when used.

[0019] 2. When using an electric earthing switch, if the electric operation is accidentally started during manual operation, the switch main shaft cannot be adsorbed and moved due to the restriction of the baffle, so that the magnetic column in the switch main shaft is adsorbed and pulled out separately, so that the alarm light can be used for alarm. At the same time, the rise of the baffle can be used to form friction resistance to the rotation of the operating handle, increasing the difficulty of rotation, so as to quickly remind the operator and avoid unexpected situations, which is beneficial to ensure the safety performance of the grounding switch when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall rear view structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the first part of the switching limiting mechanism of the present invention;

[0024] Figure 5 is a structural schematic diagram of the second part of the switching limiting mechanism of the present invention;

[0025] Figure 6 is a structural schematic diagram of the third part of the switching limiting mechanism of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the protection alarm mechanism of the present invention.

[0027] In the figure: 1. grounding switch body; 2. switch cabinet; 3. switch main shaft; 4. built-in slot; 5. operating handle; 6. insertion hole; 9. through slot; 10. card slot; 7. switching limiting mechanism; 701. support plate; 702. support swivel; 703. manual gear; 704. drive slot; 705. insertion slot; 706. driven gear one; 707. driven gear two; 708. drive motor; 709. drive gear; 710. bracket; 711. iron core; 712. electromagnetic coil; 713. limiting slot; 714. rotating slot; 715. fixing rod; 716. connecting rod; 717. baffle; 718. limit slot; 719. tension spring; 8. protection alarm mechanism; 801. alarm light; 802. magnetic column; 803. trigger button; 804. groove; 805. spring; 806. card block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] For example, see Figure 1-7 The present invention provides a technical solution: an electric grounding switch with an interlocking mechanism, comprising a grounding switch body 1, a switch cabinet 2, and a switch main shaft 3, wherein a built-in groove 4 is provided on an inner wall of one side of the switch cabinet 2, and an insertion hole 6 is provided through the inner wall of the built-in groove 4, and an operating handle 5 is provided on the inner wall of the insertion hole 6;

[0030] A switching limiting mechanism 7 is provided on the outer wall of the switch main shaft 3 .

[0031] Further, the switching limiting mechanism 7 includes a support plate 701, and the support plate 701 is rotatably connected to a support swivel 702 on one side wall of the built-in groove 4, and the support swivel 702 is fixedly connected to a manual gear 703 on one side wall of the built-in groove 4, a driving notch 704 is provided at one end of the operating handle 5, and an insertion notch 705 is provided on one end surface of the manual gear 703 facing the built-in groove 4 corresponding to the driving notch 704, and a driven gear 1 706 is fixedly connected to the outer wall of the switch main shaft 3, and one side of the driven gear 1 706 is meshed and matched with one side of the manual gear 703;

[0032] In this embodiment, when preparing for maintenance, first ensure that the circuit breaker is in the off state, and then when performing manual operation, first pick up the operating handle 5 and pass it through the insertion hole 6, and then a driving notch 704 is opened through one end of the operating handle 5, and an insertion notch 705 is opened on the end surface of the manual gear 703 facing the built-in groove 4 corresponding to the driving notch 704, and the outer wall of the switch main shaft 3 is fixedly connected with a driven gear 1 706, and at the same time, one side of the driven gear 1 706 is meshed and matched with one side of the manual gear 703, so that after being inserted to the maximum depth, the driving notch 704 is engaged and connected with the insertion notch 705, and the operating handle 5 can be rotated to drive the manual gear 703 to rotate, and then the driven gear 1 706 can be used to drive the switch main shaft 3 to rotate, so as to control the grounding switch body 1 to perform the closing operation. In this process, the driving gear 709 and the driven gear 2 707 are in a misaligned state, which does not affect the manual operation;

[0033] Then, when using electric operation, a driven gear 2 707 is fixedly connected to the outer wall of the other end of the switch main shaft 3, and a driving motor 708 is fixedly installed on one side of the grounding switch body 1, and an output shaft at one end of the driving motor 708 is fixedly connected to a driving gear 709 corresponding to the driven gear 2 707, and one side of the driving gear 709 is meshed and matched with one side of the driven gear 2 707, and a bracket 710 is fixedly connected to the inner wall of one side of the switch cabinet 2, and the inside of the bracket 710 is fixedly connected to an iron core 711 corresponding to the switch main shaft 3, and an electromagnetic coil 712 is fixedly installed on the outer wall of the iron core 711, so that the electromagnetic coil 712 can be electrically adsorbed by the cooperation with the iron core 711, so that one end of the switch main shaft 3 moves and fits toward the iron core 711, and at this time, the driven gear 2 707 installed on the switch main shaft 3 will mesh with the driving gear 709, and at this time, the switch main shaft 3 can be driven by the driving motor 708 to rotate to control the grounding switch body 1 to perform a closing operation;

[0034] Then, during the electric closing process, a limiting groove 713 is provided on the outer wall of one end of the switch main shaft 3 close to the built-in groove 4, and a rotating groove 714 is provided inside the support plate 701, and the inner wall of the rotating groove 714 is fitted and rotated with the inner wall of the limiting groove 713, so that the movement of the switch main shaft 3 can synchronously drive the support plate 701 away from the position of the built-in groove 4, so that when the operating handle 5 is inserted at this time, even after the maximum insertion depth, the driving notch 704 and the insertion notch 705 still maintain a distance, so that the operating handle 5 cannot drive the switch main shaft 3 to rotate;

[0035] The locking cam 716 is engaged with the locking cam 717 at the locking cam 718, and the locking cam 718 engages with the locking cam 719. The locking cam 719 engages with the locking cam 719 at the locking cam 718, and the locking cam 719 engages with the locking cam 719.

[0036] Furthermore, during the manual closing process, when the electric operation is accidentally started, the baffle 717 is restricted by the operating handle 5 in its ascending direction, so that the baffle 717 cannot ascend due to the operating handle 5, and the iron core 711 cannot drive the switch main shaft 3 to move by energizing and adsorbing, thereby making the driving gear 709 and the driven gear 2 707 still remain in a misaligned state, that is, the driving gear 709 rotates alone and does not affect the manual operation, thereby achieving a restriction that prevents the electric operation during the manual operation;

[0037] Next, a tension spring 719 is fixedly connected to the bottom of the baffle 717, and the other end of the tension spring 719 is fixedly connected to the inner wall of the built-in groove 4, and the baffle 717 forms a telescopic structure with the built-in groove 4 through the tension spring 719, so that after the electric operation is completed, that is, when the iron core 711 is no longer adsorbed, the tension spring 719 can be used to drive the baffle 717 to descend and reset;

[0038] As described above, when the electric earthing switch is used, when it is driven by electric means, the switch main shaft 3 can be adsorbed by the cooperation of the iron core 711 and the electromagnetic coil 712, so that the driving gear 709 is meshed with the driven gear 2 707 for electric operation. At this time, the manual gear 703 will be synchronously driven to move a certain distance. At this time, even if the operating handle 5 is inserted, the driving slot 704 cannot be connected to the insertion slot 705. At the same time, the baffle 717 can be driven to rise and the insertion hole 6 can be blocked by the support plate 701, so that the operating handle 5 cannot be inserted during the electric driving process, thereby forming a restriction to prevent manual operation during the electric operation process. At the same time, when the electric operation is accidentally started during the manual operation process, the baffle 717 is restricted by the operating handle 5 and cannot rise, so that the driving gear 709 cannot be meshed with the driven gear 2 707, thereby achieving a restriction to prevent electric operation during the manual operation process, thereby ensuring the safety performance of the grounding switch when in use.

[0039] Embodiment 2: Based on the above embodiment, a protection alarm mechanism 8 is provided inside the switch main shaft 3 .

[0040] Further, the protection alarm mechanism 8 includes an alarm light 801, and one side of the alarm light 801 is fixedly installed on one end of the switch main shaft 3 facing the built-in groove 4, a through groove 9 is penetrated through the end of the switch main shaft 3, and a magnetic column 802 is slidably connected to the inner wall of the through groove 9, a trigger button 803 is provided on the side of the alarm light 801 facing the magnetic column 802, a groove 804 is symmetrically opened on the outer wall of one end of the magnetic column 802 close to the alarm light 801, and a spring 805 is fixedly connected to the inner wall of the groove 804, and a clamping block 806 is fixedly connected to the other end of the spring 805;

[0041] In this embodiment, first, the magnetic column 802 is connected by slidingly fitting with the inner wall of the through slot 9, and the outer wall of one end of the magnetic column 802 close to the alarm light 801 is symmetrically provided with a groove 804, and the inner wall of the groove 804 is fixedly connected with a spring 805, and the other end of the spring 805 is fixedly connected with a block 806, and the outer wall of the block 806 is fitted and slid with the inner wall of the groove 804, and the inner wall of the through slot 9 is symmetrically provided with a groove 10 corresponding to the block 806, and the block 806 forms a telescopic structure with the groove 804 through the spring 805. The structure is as follows: one end of the clamping block 806 is pressed and set on the inner wall of the clamping slot 10 by the spring 805, and the ends of the two clamping blocks 806 that are far away are truncated, so that in a normal state, the magnetic column 802 is fixed in the through slot 9 by the cooperation of the spring 805 and the clamping block 806, and can press the trigger button 803 of the alarm light 801, and when the iron core 711 is adsorbed, the switch main shaft 3 and the magnetic column 802 can be adsorbed at the same time, and under the action of the clamping block 806, the switch main shaft 3 and the magnetic column 802 are moved synchronously;

[0042] Then, when the electric operation is accidentally started during the manual operation, the iron core 711 cannot drive the switch spindle 3 to move by energizing and adsorbing. During this process, since the switch spindle 3 cannot move, the magnetic column 802 will be driven to move, so that the clamping block 806 and the clamping slot 10 are squeezed. Under the guidance of the truncated cone inclined surface of the clamping block 806, the clamping block 806 shrinks into the groove 804, so that the magnetic column 802 is adsorbed and extracted separately, and the pressing of the trigger button 803 is released, so that the alarm light 801 can be used for alarm, and the alarm light 801 is close to the side of the manual operation to ensure the alarm effect. At the same time, the rise of the baffle 717 can form a friction resistance to the rotation of the operating handle 5, increasing the difficulty of rotation, so as to cooperate with the alarm light 801 to quickly remind the operator and avoid accidents.

[0043] As described above, when the electric earthing switch is used, if the electric operation is accidentally started during the manual operation, the switch main shaft 3 cannot be adsorbed and moved due to the restriction of the baffle 717, so that the magnetic column 802 in the switch main shaft 3 is adsorbed and pulled out separately, so that the alarm light 801 can be used for alarm. At the same time, the rise of the baffle 717 can be used to form frictional resistance to the rotation of the operating handle 5, increasing the difficulty of rotation, so as to quickly remind the operator and avoid accidents, which is beneficial to ensure the safety performance of the grounding switch when used.

[0044] Working principle: First, when preparing for maintenance, first ensure that the circuit breaker is in the off state. Then, when performing manual operation, first pick up the operating handle 5 and pass it through the insertion hole 6. After inserting it to the maximum depth, the driving notch 704 and the insertion notch 705 are engaged and connected. At this time, the operating handle 5 can be rotated to drive the manual gear 703 to rotate, and then the driven gear 706 can be used to drive the switch main shaft 3 to rotate, so as to control the grounding switch body 1 to perform the closing operation;

[0045] Next, when using electric operation, firstly, the electromagnetic coil 712 cooperates with the iron core 711 to conduct electric adsorption, so that one end of the switch main shaft 3 moves toward the iron core 711 and fits in, and at this time, the driven gear 2 707 installed on the switch main shaft 3 will mesh with the driving gear 709, and at this time, the switch main shaft 3 can be driven by the driving motor 708 to rotate to control the grounding switch body 1 to perform the closing operation;

[0046] Then, during the electric closing process, the movement of the switch main shaft 3 can be used to synchronously drive the support plate 701 away from the position of the built-in groove 4, so that when the operating handle 5 is inserted at this time, even after being inserted to the maximum depth, the driving notch 704 and the insertion notch 705 still maintain a certain distance, so that the operating handle 5 cannot drive the switch main shaft 3 to rotate;

[0047] Then, during the movement of the support plate 701, the baffle plate 717 can be restricted by the limiting groove 718, so that during the movement of the support plate 701, the fixing rod 715 and the connecting rod 716 can be used to drive the baffle plate 717 to rise a certain distance, thereby blocking the insertion hole 6, so that the operating handle 5 cannot be inserted during the electric driving process, thereby forming a restriction to prevent manual operation during the electric operation process;

[0048] Then, during the manual closing process, when the electric operation is accidentally started, the baffle 717 is blocked by the operating handle 5 in its ascending direction, so that the baffle 717 cannot ascend due to the operating handle 5, and the iron core 711 cannot drive the switch main shaft 3 to move by energizing and adsorbing, and the driving gear 709 and the driven gear 2 707 remain in a misaligned state, that is, the driving gear 709 rotates alone and does not affect the manual operation, thereby forming a restriction to prevent the electric operation during the manual operation;

[0049] Furthermore, when the electric operation is accidentally started during the manual operation, the iron core 711 cannot drive the switch spindle 3 to move by energizing and adsorbing. During this process, since the switch spindle 3 cannot move, the magnetic column 802 will be driven to move, so that the block 806 and the slot 10 are squeezed. Under the guidance of the truncated cone slope of the block 806, the block 806 shrinks into the groove 804, so that the magnetic column 802 is adsorbed and pulled out separately, and the pressure on the trigger button 803 is released, so that the alarm light 801 can be used for alarm, and the alarm light 801 is close to the side of the manual operation to ensure the alarm effect. At the same time, the rise of the baffle 717 can form a friction resistance to the rotation of the operating handle 5, increasing the difficulty of rotation, so as to cooperate with the alarm light 801 to quickly remind the operator and avoid accidents.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric earthing switch with an interlocking mechanism, comprising an earthing switch body (1), a switch cabinet (2), and a switch main shaft (3), characterized in that: A built-in groove (4) is provided on an inner wall of one side of the switch cabinet (2), and an insertion hole (6) is provided through the inner wall of the built-in groove (4), and an operating handle (5) is provided on the inner wall of the insertion hole (6); The outer wall of the switch main shaft (3) is provided with a switching limiting mechanism (7) so as to disconnect the driving connection between the manual operation and the switch main shaft (3) when the electric operation is performed, and disconnect the driving connection between the electric operation and the switch main shaft (3) when the manual operation is performed; A protective alarm mechanism (8) is provided inside the switch main shaft (3) to promptly give an alarm prompt to the operator when the electric operation is accidentally started during the manual operation; The switching limiting mechanism (7) comprises a support plate (701), and the support plate (701) is rotatably connected to a support rotating ring (702) on one side wall of the built-in groove (4), and the support rotating ring (702) is fixedly connected to a manual gear (703) on one side wall of the built-in groove (4), one end of the operating handle (5) is provided with a driving notch (704), and an insertion notch (705) is provided on an end surface of the manual gear (703) facing the built-in groove (4) and corresponding to the driving notch (704), and an outer wall of the switch main shaft (3) is fixedly connected to a driven gear 1 (706), and one side of the driven gear 1 (706) is meshed and matched with one side of the manual gear (703); The other end outer wall of the switch main shaft (3) is fixedly connected to a driven gear 2 (707); a driving motor (708) is fixedly mounted on one side of the grounding switch body (1); and an output shaft at one end of the driving motor (708) is fixedly connected to a driving gear (709) corresponding to the driven gear 2 (707); one side of the driving gear (709) is meshed and matched with one side of the driven gear 2 (707); a bracket (710) is fixedly connected to an inner wall of one side of the switch cabinet (2); and an iron core (711) is fixedly connected inside the bracket (710) corresponding to the switch main shaft (3); and an electromagnetic coil (712) is fixedly mounted on the outer wall of the iron core (711); A limiting groove (713) is provided on the outer wall of one end of the switch main shaft (3) close to the built-in groove (4), a rotating groove (714) is provided inside the support plate (701), and the inner wall of the rotating groove (714) rotates in contact with the inner wall of the limiting groove (713), a fixing rod (715) is symmetrically fixedly connected to the outer wall of one side of the support plate (701) facing the built-in groove (4), and the other end of the fixing rod (715) is hingedly connected to a connecting rod (716), and the other end of the connecting rod (716) is hingedly connected to a baffle (717) corresponding to the insertion hole (6); The outer wall of one side of the baffle plate (717) facing the built-in groove (4) fits and slides with the inner wall of the built-in groove (4), and the inner wall of the built-in groove (4) is symmetrically provided with a limiting groove (718) corresponding to the baffle plate (717), and the outer walls on both sides of the baffle plate (717) fit and slide with the inner wall of the limiting groove (718).

2. An electric grounding switch with an interlocking mechanism according to claim 1, characterized in that: A tension spring (719) is fixedly connected to the bottom of the baffle (717), and the other end of the tension spring (719) is fixedly connected to the inner wall of the built-in groove (4), and the baffle (717) forms a telescopic structure with the built-in groove (4) via the tension spring (719).

3. The electric grounding switch with an interlocking mechanism according to claim 1, characterized in that: The protection alarm mechanism (8) comprises an alarm light (801), and one side of the alarm light (801) is fixedly mounted on an end of the switch main shaft (3) facing the built-in groove (4); a through groove (9) is provided through the end of the switch main shaft (3), and a magnetic column (802) is slidably connected to the inner wall of the through groove (9); a trigger button (803) is provided on the side of the alarm light (801) facing the magnetic column (802); a groove (804) is symmetrically provided on the outer wall of an end of the magnetic column (802) close to the alarm light (801), and a spring (805) is fixedly connected to the inner wall of the groove (804); and a clamping block (806) is fixedly connected to the other end of the spring (805).

4. The electric grounding switch with an interlocking mechanism according to claim 3, characterized in that: The outer wall of the clamping block (806) is slidably fitted with the inner wall of the groove (804), and the inner wall of the through groove (9) is symmetrically provided with clamping grooves (10) corresponding to the clamping block (806).

5. The electric grounding switch with an interlocking mechanism according to claim 4, characterized in that: The clamping block (806) forms a telescopic structure with the groove (804) via a spring (805), and one end of the clamping block (806) is pressed and arranged on the inner wall of the clamping groove (10) via the spring (805), and the ends of the two clamping blocks (806) that are separated from each other are in a truncated cone shape.

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