Arc extinguishing sheet assembling device of arc chute

Abstract

The utility model discloses an arc extinguishing sheet assembling device of an arc chute, which comprises a rack, a linear driving module is arranged at the upper part of the rack, and an assembling jig is arranged on one side of the linear driving module; the assembling jig comprises a containing base, an angle rotating block is arranged in the containing base, and the angle rotating block is connected with the containing base through a hinge and rotates in the containing base. A placement groove is formed in the angle rotating block, the placement groove is used for placing the fixed frame, and the linear driving module is in transmission connection with the angle rotating block and drives the angle rotating block and the fixed frame placed in the placement groove to rotate, so that the insertion position in the fixed frame is aligned with the insertion direction of the arc extinguishing sheet; according to the arc extinguishing sheet assembling device of the arc chute provided by the utility model, the arc extinguishing sheets of the arc chute are assembled in a manual and mechanical combined manner, and through the assistance of the assembling device, the working intensity is reduced, the production efficiency is improved, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of arc extinguishing grid production auxiliary equipment, in particular to an arc extinguishing sheet assembly device of an arc extinguishing grid. Background Art

[0002] The arc extinguishing grid is a cover similar to a fence that covers the parts of electrical switches or contactors where arcs are easily generated. When an arc occurs, it generates heat, which heats the surrounding air. When the heat rises, the arc moves upward. Generally, the arc extinguishing plate is installed above the arc occurrence point. The arc will be elongated by the grid, making it impossible to maintain the arc and extinguish it. This can avoid arc damage.

[0003] like Figure 1 As shown, the arc extinguishing grid 03 includes a fixing frame 04, and a plurality of arc extinguishing plates 01 arranged at intervals are fixedly connected between the fixing frames 04, and a "U"-shaped opening 02 is provided on the lower side of the arc extinguishing plates 01. In the prior art, when assembling the arc extinguishing grid, the arc extinguishing plates 01 are usually manually inserted into the fixing frame 04 one by one, so as to assemble the arc extinguishing grid, such as Figure 1 As shown, the arc extinguishing grid is placed at an angle. If it is directly assembled manually, one hand is required to continuously adjust the angle and the other hand is required to insert the arc extinguishing piece 01. Such insertion work is heavy, inefficient, and has a high production cost, which is not conducive to large-scale assembly production. Utility Model Content

[0004] The purpose of the utility model is to overcome the defect that both hands are occupied in the prior art, and to provide an arc extinguishing plate assembly device for an arc extinguishing grid, which uses a combination of manual and mechanical methods to assemble the arc extinguishing plates of the arc extinguishing grid, and with the assistance of the assembly device, reduces work intensity, improves production efficiency, and reduces costs.

[0005] To achieve the above-mentioned purpose, the utility model provides an arc extinguishing plate assembly device for an arc extinguishing grid, comprising a frame, a linear drive module is installed on the upper part of the frame, and an assembly jig is installed on one side of the linear drive module; the assembly jig comprises a placement seat, an angle rotation block is installed inside the placement seat, the angle rotation block is hinged to the placement seat and rotates inside the placement seat; a placement groove is provided inside the angle rotation block, and the placement groove is used to place a fixed frame, the linear drive module is transmission-connected to the angle rotation block, drives the angle rotation block and the fixed frame placed in the placement groove to rotate, so that the insertion position in the fixed frame is aligned with the insertion direction of the arc extinguishing plate.

[0006] Preferably, the linear drive module includes a telescopic electric cylinder installed on the frame, a drive motor installed at one end of the telescopic electric cylinder, and a pushing block installed at the other end of the telescopic electric cylinder. The drive motor drives the telescopic electric cylinder and the pushing block to linearly extend, so that the pushing block contacts the angle rotating block and pushes the angle rotating block to rotate; the pushing block is L-shaped.

[0007] Preferably, a first pin shaft is installed at the lower part of the angle rotating block, and first round holes for accommodating the first pin shaft are provided on both sides of the placing seat. The angle rotating block rotates around the first pin shaft.

[0008] Preferably, a second pin shaft is installed at the upper part of the angle rotating block, and arc-shaped grooves for accommodating the second pin shaft are provided on both sides of the placing seat. The second pin shaft slides inside the arc-shaped groove, and the arc-shaped groove limits the stroke of the angle rotating block.

[0009] Preferably, a third pin shaft is further installed at the upper part of the angle rotating block, a fourth pin shaft is installed on the placing seat, and a return spring is installed between the third pin shaft and the fourth pin shaft. The return spring drives the angle rotating block to reset.

[0010] Preferably, a first through hole is provided in the middle of the third pin shaft, a second through hole is provided in the middle of the fourth pin shaft, one end of the return spring is buckled inside the first through hole, and the other end is buckled inside the second through hole.

[0011] Preferably, a U-shaped groove is provided at the bottom of the placing groove, and a plurality of raised strips are provided at the bottom of the fixed frame. The raised strips are inserted into the U-shaped groove, and the U-shaped groove limits the fixed frame.

[0012] Preferably, a lateral tightening assembly is provided on the side of the angle rotating block, and the lateral tightening assembly is used to laterally tighten the fixed frame inside the placing groove; a longitudinal tightening assembly is further provided on the side of the angle rotating block, and the longitudinal tightening assembly is used to longitudinally tighten the fixed frame inside the placing groove.

[0013] Preferably, both the lateral tightening assembly and the longitudinal tightening assembly include an insertion block inserted into the placing groove and a fixed block installed on one side of the insertion block. The angle rotating block is provided with an insertion groove for the insertion block to insert. The insertion block is L-shaped to limit the insertion depth; a plurality of tightening springs are installed between the insertion block and the fixed block; the fixed block is fixed on the angle rotating block and limits the insertion block; the tightening springs are installed inside the spring placement holes on the insertion block and the fixed block; a chamfer is provided at the end of the insertion block to facilitate the insertion of the fixed frame.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] During the assembly process of the arc extinguishing grid of the present utility model, first, the fixing frame is placed inside the placement groove; secondly, the linear drive module is in transmission connection with the angle rotation block to drive the angle rotation block and the fixing frame placed inside the placement groove to rotate, so that the insertion position of the fixing frame is aligned with the insertion direction of the arc extinguishing piece; finally, one arc extinguishing piece is inserted vertically manually or automatically. After the insertion is in place, the linear drive module continues to drive the fixing frame to rotate, so that the next insertion position is aligned with the insertion direction, which is convenient for insertion and installation. Until all the arc extinguishing pieces are inserted, the assembly of the arc extinguishing grid is completed; the assembly device liberates at least one hand that continuously adjusts the angle. During the assembly process, only the insertion process of the arc extinguishing piece needs to be focused on; in the present utility model, a combination of manual and mechanical methods is used to assemble the arc extinguishing pieces of the arc extinguishing grid. With the assistance of the assembly device, the working intensity is reduced, the production efficiency is improved, and the cost is reduced; furthermore, the insertion action can also use an automatic insertion mechanism, so that the arc extinguishing grid is assembled fully automatically, thus completely eliminating the need for manual intervention and automatically carrying out production and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is an exploded view of the arc extinguishing grid provided by the present utility model;

[0018] Figure 2 is a schematic diagram of the assembly device placed horizontally provided by the present utility model;

[0019] Figure 3 is a schematic diagram of the linear drive module provided by the present utility model;

[0020] Figure 4 is a schematic diagram of the assembly jig provided by the present utility model;

[0021] Figure 5 is a schematic diagram of the assembly device placed vertically provided by the present utility model;

[0022] Figure 6 is a front exploded view of the assembly jig provided by the present utility model;

[0023] Figure 7 is a side exploded view of the assembly jig provided by the present utility model;

[0024] Figure 8It is a front exploded view of the lateral tightening assembly and the longitudinal tightening assembly provided by the present utility model;

[0025] Figure 9 It is a bottom exploded view of the lateral tightening assembly and the longitudinal tightening assembly provided by the present utility model.

[0026] In the figure, it includes:

[0027] 1. Frame; 3. Linear drive module; 2. Assembly jig; 21. Placing seat; 22. Angle rotating block; 23. Placing groove; 04. Fixed frame; 01. Arc piece; 31. Telescopic electric cylinder; 32. Driving motor; 33. Pushing block; 71. First pin shaft; 72. First round hole; 73. Second pin shaft; 74. Arc-shaped groove; 41. Third pin shaft; 42. Fourth pin shaft; 43. Return spring; 44. First through hole; 45. Second through hole; 231. U-shaped groove; 041. Raised strip; 5. Lateral tightening assembly; 6. Longitudinal tightening assembly; 51. Insertion block; 52. Fixed block; 53. Insertion groove; 54. Tightening spring; 55. Spring placement hole. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are one of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0029] Please refer to Figures 1 to 9 , the present utility model provides an arc extinguishing piece assembling device for an arc extinguishing grid.

[0030] As Figure 1 shown, in this embodiment, 8 arc extinguishing pieces 01 are inclinedly arranged inside the fixed frame 04, and the 8 arc extinguishing pieces 01 are arranged at intervals. A plurality of grooves 045 are provided on both sides of the fixed frame 04. Correspondingly, the side surface of the arc extinguishing piece 01 is also provided with corresponding protrusions 015. After the arc extinguishing piece 01 is inserted into the fixed frame 04, the protrusions 015 on the arc extinguishing piece 01 are snapped into the grooves 045 on the fixed frame 04 to complete the assembly and fixation of the arc extinguishing piece 01.

[0031] As Figure 2As shown, in this embodiment, the assembly device is placed horizontally. The assembly device comprises a horizontally placed frame 1, a linear drive module 3 is mounted on the upper part of the frame 1, and an assembly jig 2 is mounted on one side of the linear drive module 3; in this embodiment, the linear drive module 3 and the assembly jig 2 are separated from each other, and the bottom of the assembly jig 2 can be connected to an automatic conveyor line, which conveys the assembly jig 2 to one side of the linear drive module 3, so as to facilitate the subsequent insertion and assembly of the arc extinguishing piece 01.

[0032] In other embodiments, the linear drive module 3 and the assembly jig 2 may also be connected together, with only one assembly jig 2, so that the degree of assembly automation and efficiency will be lower; whereas in this embodiment, since they are not connected together, multiple assembly jigs 2 may be configured, so that the degree of assembly automation and efficiency will be higher.

[0033] like Figure 4 As shown, the assembly jig 2 includes a placement seat 21, which is U-shaped and symmetrical on the left and right. An angle rotation block 22 is installed inside the placement seat 21. The angle rotation block 22 is hinged to the placement seat 21 and can rotate inside the placement seat 21 to adjust the angle of the angle rotation block 22. A placement groove 23 is provided inside the angle rotation block 22, and the placement groove 23 is used to place the fixed frame 04, thereby facilitating the subsequent insertion of the arc extinguishing sheet 01.

[0034] Furthermore, the linear drive module 3 is connected to the angle rotating block 22, driving the angle rotating block 22 and the fixed frame 04 placed inside the placement groove 23 to rotate, so that the insertion position in the fixed frame 04 is aligned with the insertion direction of the arc extinguishing piece 01, and the insertion direction at this time is vertical insertion.

[0035] In other embodiments, Figure 5 As shown, the assembly device can also be placed vertically, and the insertion direction is horizontal insertion. At this time, the assembly device can face the operator, thereby facilitating the operator's operation and improving the operating efficiency.

[0036] The operating process of the horizontally placed assembly device: First, place the fixing frame 04 inside the placement groove 23, and use the automatic conveyor line to convey the assembly jig 2 and the fixing frame 04 to one side of the linear drive module 3; Second, the linear drive module 3 drives the angle rotation block 22 and the fixing frame 04 placed inside the placement groove 23 to rotate, so that the insertion position in the fixing frame 04 is vertically aligned with the insertion direction of the arc extinguishing piece 01; Finally, manually or automatically insert an arc extinguishing piece 01 vertically. After the insertion is in place, the linear drive module 3 continues to drive the fixing frame 04 to rotate, so that the next insertion position is vertically aligned with the insertion direction, facilitating vertical insertion. Until all the arc extinguishing pieces 01 are inserted, the assembly of the arc extinguishing grid is completed; Further, if the assembly device is placed vertically, the insertion direction at this time is horizontal insertion.

[0037] If the manual insertion method is replaced with an automatic insertion mechanism, the arc extinguishing grid 03 can be fully automatically assembled, so that no manual intervention is required at all, and production and assembly are carried out automatically.

[0038] As Figure 3 As shown, the linear drive module 3 is not connected to the assembly jig 2. Specifically, the linear drive module 3 includes a telescopic electric cylinder 31 installed on the frame 1, a drive motor 32 installed at one end of the telescopic electric cylinder 31, and a push block 33 installed at the other end of the telescopic electric cylinder 31. The drive motor 32 drives the telescopic electric cylinder 31 and the push block 33 to linearly extend, so that the push block 33 contacts the angle rotation block 22 and pushes the angle rotation block 22 to rotate; In this embodiment, the push block 33 extends horizontally in a straight line. The linear drive module 3 is a lead screw drive linear module, a synchronous belt drive linear module, or a linear motor module, so as to have better output accuracy and better stage control. The linear drive module 3 can output in multiple segments, so as to facilitate the insertion of multiple arc extinguishing pieces 01; Further, in order to facilitate contact with the angle rotation block 22, the push block 33 is L-shaped, so as to have more contact parts and better contact.

[0039] As Figure 6 As shown, a first pin shaft 71 is installed at the lower part of the angle rotation block 22. First circular holes 72 for accommodating the first pin shaft 71 are provided on both sides of the placement seat 21. The first pin shaft 71 is inserted into the first circular holes 72 of the placement seat 21, so that the angle rotation block 22 can rotate around the first pin shaft 71; In order to reduce the friction during rotation, a ball bearing can also be installed between the first pin shaft 71 and the first circular holes 72.

[0040] As Figure 4 and Figure 6As shown, a second pin shaft 73 is installed on the upper part of the angle rotation block 22. Arc-shaped grooves 74 for accommodating the second pin shaft 73 are provided on both sides of the placement seat 21. The second pin shaft 73 slides in multiple stages inside the arc-shaped grooves 74, and the two ends of the arc-shaped grooves 74 limit the stroke of the angle rotation block 22. The cooperation between the second pin shaft 73 and the arc-shaped grooves 74 enables the angle rotation block 22 to move stably during rotation.

[0041] In this embodiment, since the linear drive module 3 is not connected to the assembly jig 2, the angle rotation block 22 cannot be directly reset, and a return spring 43 needs to be used to reset the angle rotation block 22. If the linear drive module 3 is directly connected to the assembly jig 2, the angle rotation block 22 can be automatically reset under the drive of the linear drive module 3.

[0042] Specifically, as Figure 6 and Figure 7 shown, a third pin shaft 41 is further installed on the upper part of the angle rotation block 22, a fourth pin shaft 42 is installed on the placement seat 21, and a return spring 43 is installed between the third pin shaft 41 and the fourth pin shaft 42. The return spring 43 drives the angle rotation block 22 to be reset.

[0043] When the linear drive module 3 drives the angle rotation block 22 to rotate, the return spring 43 is stretched and stores elastic potential energy. When the linear drive module 3 contracts, the elastic potential energy inside the return spring 43 drives the angle rotation block 22 to be reset.

[0044] Furthermore, as Figure 6 and Figure 7 shown, the return spring 43 is a hook spring. For the convenience of installing the hook spring, a first through hole 44 is provided in the middle of the third pin shaft 41, a second through hole 45 is provided in the middle of the fourth pin shaft 42, one end of the return spring 43 is buckled inside the first through hole 44, and the other end is buckled inside the second through hole 45.

[0045] As Figure 8 and Figure 9 shown, in order to better place the bottom of the fixed frame 04, a plurality of protruding strips 041 are provided at the bottom of the fixed frame 04, and a U-shaped groove 231 for accommodating the protruding strips 041 is provided at the bottom of the placement groove 23. When the fixed frame 04 is placed, the protruding strips 041 are inserted into the U-shaped groove 231, and the U-shaped groove 231 limits the fixed frame 04.

[0046] As Figure 6As shown, in order to facilitate the fixation of the fixing frame 04 placed inside the placement groove 23, a lateral tightening assembly 5 is provided on the side of the angle rotation block 22. The lateral tightening assembly 5 is used to laterally tighten the fixing frame 04 placed inside the placement groove 23. A longitudinal tightening assembly 6 is also provided on the side of the angle rotation block 22. The longitudinal tightening assembly 6 is used to longitudinally tighten the fixing frame 04 placed inside the placement groove 23.

[0047] With the cooperation of the lateral tightening assembly 5 and the longitudinal tightening assembly 6, the fixing frame 04 can be tightened in both the lateral and longitudinal directions, achieving the best tightening effect. In some embodiments, either the lateral tightening assembly 5 or the longitudinal tightening assembly 6 can be optionally selected or not used directly, resulting in a poor fixing effect and easy loosening and deviation. Further, two of the lateral tightening assembly 5 and the longitudinal tightening assembly 6 can also be used separately to tighten all around the fixing frame 04.

[0048] As Figure 8 and Figure 9 shown, the specific structures of the lateral tightening assembly 5 and the longitudinal tightening assembly 6 are the same, except for the installation directions. Specifically, both the lateral tightening assembly 5 and the longitudinal tightening assembly 6 include an insertion block 51 inserted into the placement groove 23 and a fixing block 52 installed on one side of the insertion block 51. The insertion block 51 is inserted into the placement groove 23 to tighten the fixing frame 04. To facilitate the installation and movement of the insertion block 51, the angle rotation block 22 is provided with an insertion groove 53. The insertion block 51 is inserted into the insertion groove 53 and reciprocates horizontally along the insertion groove 53.

[0049] Further, as Figure 8 and Figure 9 shown, the insertion block 51 is L-shaped and cannot completely pass through the insertion groove 53, thereby limiting the insertion block 51 and also restricting the insertion depth of the insertion block 51. Therefore, the fixing frame 04 inside the placement groove 23 cannot be too small, otherwise the positioning frame 04 cannot be fixed.

[0050] At the same time, the fixing block 52 is fixed to the angle rotation block 22. The fixing block 52 is installed on one side of the insertion block 51 and wraps the insertion block 51 to limit the insertion block 51 in the other direction, enabling the insertion block 51 to reciprocate horizontally within a certain range along the insertion groove 53.

[0051] Furthermore, as Figure 8 and Figure 9As shown, a plurality of pressing springs 54 are installed between the insertion block 51 and the fixing block 52; the pressing springs 54 are installed inside the spring placement holes 55 on the insertion block 51 and the fixing block 52; driven by the pressing springs 54, the insertion block 51 moves horizontally into the placement groove 23 along the insertion groove 53, pressing and fixing the positioning frame 04 to achieve flexible pressing.

[0052] As Figure 8 and Figure 9 shown, in order to facilitate the insertion of the fixing frame 04, the end of the insertion block 51 is provided with a chamfer; when the fixing frame 04 is inserted, the insertion block 51 withdraws from the inside of the placement groove 23, compressing the pressing spring 54.

[0053] The usage steps of the assembly device:

[0054] Step S1: Vertically insert the fixing frame 04 into the placement groove 23, the insertion block 51 horizontally withdraws from the inside of the placement groove 23, and driven by the pressing spring 54, the insertion block 51 presses or fixes the fixing frame 04;

[0055] Step S2: The automatic conveyor line transports the assembly jig 2 and the fixing frame 04 to one side of the linear drive module 3; at this time, the push block 33 is aligned with the angle rotation block 22;

[0056] Step S3: The drive motor 32 drives the telescopic cylinder 31 and the push block 33 to extend linearly, so that the push block 33 contacts the angle rotation block 22 and pushes the angle rotation block 22 to rotate, making the first insertion position in the fixing frame 04 vertically aligned with the insertion direction of the arc extinguishing piece 01;

[0057] Step S4: Manually or automatically insert the arc extinguishing piece 01 into the first insertion position in the fixing frame 04;

[0058] Step S5: The push block 33 continues to extend linearly, so that the next insertion position of the fixing frame 04 is vertically aligned with the insertion direction, and the arc extinguishing piece 01 is vertically inserted until all the arc extinguishing pieces 01 are inserted, completing the assembly of the arc extinguishing grid;

[0059] Step S6: The drive motor 32 drives the telescopic cylinder 31 and the push block 33 to retract linearly, and the elastic potential energy inside the return spring 43 drives the angle rotation block 22 to reset.

[0060] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. An arc-extinguishing plate assembly device for an arc-extinguishing grid, characterized in that: The invention comprises a frame (1), wherein a linear drive module (3) is installed on the upper part of the frame (1), and an assembly jig (2) is installed on one side of the linear drive module (3); the assembly jig (2) comprises a placement seat (21), wherein an angle rotation block (22) is installed inside the placement seat (21), wherein the angle rotation block (22) is hingedly connected to the placement seat (21) and rotates inside the placement seat (21); a placement groove (23) is provided inside the angle rotation block (22), wherein the placement groove (23) is used to place a fixed frame (04), and the linear drive module (3) is transmission-connected to the angle rotation block (22), and drives the angle rotation block (22) and the fixed frame (04) placed inside the placement groove (23) to rotate, so that the insertion position in the fixed frame (04) is aligned with the insertion direction of the arc extinguishing sheet (01).

2. The arc-extinguishing plate assembly device of the arc-extinguishing grid according to claim 1, characterized in that: The linear drive module (3) comprises a telescopic electric cylinder (31) mounted on a frame (1), a driving motor (32) mounted at one end of the telescopic electric cylinder (31), and a pushing block (33) mounted at the other end of the telescopic electric cylinder (31); the driving motor (32) drives the telescopic electric cylinder (31) and the pushing block (33) to extend linearly, so that the pushing block (33) contacts the angle rotating block (22) and pushes the angle rotating block (22) to rotate; the pushing block (33) is L-shaped.

3. The arc-extinguishing plate assembly device of the arc-extinguishing grid according to claim 1, characterized in that: A first pin shaft (71) is installed at the lower part of the angle rotation block (22), and first round holes (72) for accommodating the first pin shaft (71) are provided on both sides of the placement seat (21), and the angle rotation block (22) rotates around the first pin shaft (71).

4. The arc-extinguishing plate assembly device of the arc-extinguishing grid according to claim 1, characterized in that: A second pin shaft (73) is installed on the upper part of the angle rotating block (22), and arc grooves (74) for accommodating the second pin shaft (73) are provided on both sides of the placement seat (21). The second pin shaft (73) slides inside the arc groove (74), and the arc groove (74) limits the stroke of the angle rotating block (22).

5. The arc-extinguishing plate assembly device of the arc-extinguishing grid according to claim 1, characterized in that: A third pin shaft (41) is also installed on the upper part of the angle rotating block (22), a fourth pin shaft (42) is installed on the placement seat (21), a reset spring (43) is installed between the third pin shaft (41) and the fourth pin shaft (42), and the reset spring (43) drives the angle rotating block (22) to reset.

6. The arc-extinguishing plate assembly device of the arc-extinguishing grid according to claim 5, characterized in that: A first through hole (44) is provided in the middle of the third pin shaft (41), a second through hole (45) is provided in the middle of the fourth pin shaft (42), one end of the return spring (43) is buckled in the first through hole (44), and the other end is buckled in the second through hole (45).

7. The arc-extinguishing plate assembly device of the arc-extinguishing grid according to claim 1, characterized in that: A U-shaped groove (231) is provided at the bottom of the placement groove (23), and a plurality of raised strips (041) are provided at the bottom of the fixing frame (04). The raised strips (041) are inserted into the U-shaped groove (231), and the U-shaped groove (231) defines the fixing frame (04).

8. The arc-extinguishing plate assembly device of the arc-extinguishing grid according to claim 1, characterized in that: A transverse tightening assembly (5) is provided on the side of the angle rotating block (22), and the transverse tightening assembly (5) is used to tighten the fixing frame (04) inside the placement groove (23) transversely; a longitudinal tightening assembly (6) is also provided on the side of the angle rotating block (22), and the longitudinal tightening assembly (6) is used to tighten the fixing frame (04) inside the placement groove (23) longitudinally.

9. The arc-extinguishing plate assembly device of the arc-extinguishing grid according to claim 8, characterized in that: The transverse tightening assembly (5) and the longitudinal tightening assembly (6) both comprise an insertion block (51) inserted into the placement groove (23) and a fixed block (52) mounted on one side of the insertion block (51); the angle rotation block (22) is provided with an insertion groove (53) for inserting the insertion block (51); the insertion block (51) is L-shaped so that the insertion depth is limited; a plurality of tightening springs (54) are mounted between the insertion block (51) and the fixed block (52); the fixed block (52) is fixed on the angle rotation block (22) and limits the insertion block (51); the tightening springs (54) are mounted inside spring placement holes (55) on the insertion block (51) and the fixed block (52); and a rounded corner is provided at the end of the insertion block (51) for facilitating the insertion of the fixed frame (04).

Images