CN219267591U - Standardized fuse tool - Google Patents

Abstract

The utility model discloses a standardized fuse tool, which comprises a bottom plate, wherein a vertical supporting rod is movably inserted in the middle of the bottom plate along the height direction, one end of the vertical supporting rod, which is far away from the bottom plate, is turned over to form a horizontal part parallel to the width direction, and one end of the horizontal part, which is far away from the bottom plate, is provided with a hanging ring; a through hole is formed in the horizontal part in a penetrating manner along the length direction; when in assembly, the shaft pin passes through the insertion hole and the through hole of the middle hardware fitting to be fixed; the bottom plate is provided with a first supporting block and a second supporting block which are oppositely arranged at two sides of the horizontal part along the length direction; one end of the first support block, which is away from the bottom plate, is penetrated and formed with a first through groove along the length direction, wherein the first through groove is used for limiting the lower wiring terminal and is used for allowing a square neck bolt to pass through; one end of the second supporting block, which is away from the bottom plate, is penetrated and formed with a second through groove along the length direction, and the second through groove is used for limiting the upper wiring terminal and is used for allowing the neck bolt to pass through. The utility model has good positioning and fixing effects on each part of the fuse and high production efficiency.

Description

Standardized fuse tool

Technical Field

The utility model relates to the technical field of mechanical tools, in particular to a standardized fuse tool.

Background

The drop-out fuse (as shown in fig. 1) needs to be provided with a square neck bolt at the junction of the lower wiring terminal and the lower contact and at the junction of the upper wiring terminal and the upper contact respectively in the assembly process, so that the lower wiring terminal, the lower contact, the upper wiring terminal and the upper contact are assembled on the fuse holder. When the square neck bolt is assembled, each part is required to be positioned through a tool, and then the assembly is carried out; the existing tool for assembling most fuses is used for positioning and fixing a lower wiring terminal, a lower contact, an upper wiring terminal, an upper contact, a fuse seat and the like through two limiting blocks with limiting grooves, and then the square neck bolt is assembled manually, but the tool with the structure needs to be used for manually lifting and placing the heavy fuse seat on the tool when being assembled, so that the labor intensity of workers is high, the positioning and fixing effects on various parts are poor, and the production efficiency is low.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defects that the positioning and fixing effects of the tool for assembling the fuse in the prior art on each part are poor and the production efficiency is low, so that the standardized fuse tool is provided.

The tool provided by the utility model is applied to auxiliary assembly of a drop-out fuse, and comprises:

a bottom plate;

the vertical support rod is movably inserted in the middle of the bottom plate along the height direction, one end of the vertical support rod, which is away from the bottom plate, is turned over to form a horizontal part, the horizontal part is parallel to the width direction, and one end of the horizontal part, which is away from the bottom plate, is provided with a hanging ring; a through hole is formed in the horizontal part in a penetrating manner along the length direction, and the through hole is used for the shaft pin to pass through and fix; when the axle pin is assembled, the axle pin passes through the insertion hole of the middle hardware fitting;

the first supporting block is arranged on one side of the bottom plate, one end of the first supporting block, which is away from the bottom plate, penetrates through the first supporting block along the length direction to form a first through groove, and the first through groove is used for limiting the lower wiring terminal and is used for allowing a square neck bolt to pass through;

the second supporting blocks are arranged on the bottom plate, and the second supporting blocks and the first supporting blocks are oppositely arranged on two sides of the horizontal part along the length direction; the second supporting block deviates from the one end of bottom plate runs through along length direction to be formed with the second through-groove, the second through-groove is used for spacing binding post, and is used for the side neck bolt to pass.

The standardized fuse tool provided by the utility model has at least the following technical effects: 1. the middle part of the bottom plate is movably inserted with the vertical support rod, the horizontal part is provided with the hanging ring, in the assembling and using process, the L-shaped structure formed by the vertical support rod and the horizontal part can be hung on the assembly line equipment through the hanging ring, and the axle pin penetrates through the insertion hole and the through hole of the middle hardware fitting of the fuse holder and is locked, so that the heavier fuse holder can be firmly fixed on the L-shaped structure formed by the vertical support rod and the horizontal part, and the assembly line equipment is utilized to replace a manual work to install the L-shaped structure connected with the heavier fuse holder on the assembling station of the bottom plate in a mechanical mode, thereby reducing the labor intensity and improving the production efficiency; meanwhile, as the connecting fixed point of the fuse holder and the L-shaped structure is one of three reference holes on the fuse holder, the fuse holder can rotate around the axial direction of the shaft pin, and the fuse holder can be positioned and fixed more conveniently and accurately; the first through groove and the second through groove of L type structure cooperation still realize that the three-point is fixed, and be convenient for more stable and accurate with last binding post and lower binding post installation and fixed, improve the fixed effect in location to each spare part to improve the quality of the fuse that final assembly obtained. 2. The first through groove and the second through groove limit the lower wiring terminal and the upper wiring terminal not to swing along the width direction, so that the tool operation space is reserved when the installation rear end is right, and the square neck bolt is screwed.

Preferably, a guide shaft arranged along the height direction is arranged on the bottom plate, one end of the guide shaft, which is away from the bottom plate, is connected with a support cylinder in a sliding manner along the height direction, and a spring is arranged between the support cylinder and the guide shaft; the support cylinder is located relatively below the horizontal portion in the height direction.

Preferably, the end face of one end of the supporting cylinder, which is away from the bottom plate, forms an arc concave surface which is circumferentially distributed around the length direction, and the arc concave surface is used for being attached to the outer peripheral surface of the fuse holder.

Preferably, one end of the first supporting block facing the vertical strut is provided with a first boss parallel to the length direction and used for supporting the lower contact.

Preferably, the side walls of the two sides of the first boss along the width direction are respectively provided with a second boss, the second bosses are parallel to the length direction, and the second bosses are arranged at one end of the side walls of the first boss, which faces the bottom plate, and are used for supporting a contact piece for protecting the lower contact.

Preferably, the first supporting blocks are symmetrically provided with supporting blocks along two sides of the width direction, and each supporting block is provided with a through hole in a penetrating manner along the width direction; a through cavity is formed in the first support block, corresponding to the position of the through hole, in a penetrating manner along the width direction, and penetrates through one side of the first support block along the length direction; the through hole and the through cavity are used for inserting a bolt; when assembled, the plug pin passes through the jack of the lower contact.

Preferably, the first support block is slidably disposed on the bottom plate along a length direction; the position on the bottom plate corresponding to the first supporting block is provided with a strip-shaped through groove along the length direction, the strip-shaped through groove is used for a fastening bolt to pass through, one end of the first supporting block, which faces the bottom plate, is provided with a threaded hole corresponding to the position of the strip-shaped through groove, and the threaded hole is arranged along the height direction and matched with the fastening bolt.

Preferably, a first limiting groove is arranged at one end of the second supporting block, which faces the first supporting block, along the height direction, the first limiting groove is communicated with the second through groove, and the first limiting groove is used for limiting the upper wiring terminal.

Preferably, a second limit groove arranged along the height direction is formed in the bottom plate at one side of the second support block, which faces the first support block, and is used for limiting an upper contact; the second limiting groove is communicated with a third limiting groove on one side, deviating from the second supporting block in the length direction, of the second limiting groove, and the third limiting groove is parallel to the width direction and used for limiting a guide hook of the upper contact.

Preferably, the device further comprises a base, the bottom plate is rotatably connected to the base, a plurality of limiting holes are circumferentially spaced on the base, each limiting hole penetrates through the base in the height direction, and a lock hole is formed in the bottom plate, corresponding to one of the limiting holes, in a penetrating manner in the height direction; during locking, the limiting pin is inserted through the locking hole and one of the limiting holes.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a conventional drop-out fuse;

FIG. 2 is a schematic view showing a structure in which a drop-out fuse is mounted on a tooling of the present utility model;

FIG. 3 is a schematic diagram of an exploded construction of the present utility model;

FIG. 4 is a schematic view of the assembled structure of a first support block and two support blocks in the present utility model;

fig. 5 is a schematic structural view of a base in the present utility model.

Reference numerals illustrate:

1-a bottom plate, 11-a strip-shaped through groove, 12-a fastening bolt, 13-a second limit groove, 14-a third limit groove, 15-a slot, 16-a long through groove and 17-a lightening hole;

21-vertical supporting rods, 22-horizontal parts, 221-inclined planes, 23-hanging rings, 24-shaft pins and 241-locking pieces;

3-first supporting blocks, 31-first through grooves, 32-first bosses, 321-second bosses, 33-through cavities and 34-bolts;

4-second supporting blocks, 41-second through grooves, 42-supporting blocks and 43-first limit grooves;

51-a guide shaft, 52-a supporting cylinder, 521-a circular arc concave surface and 53-a spring;

6-base, 61-limiting hole, 62-limiting pin, 63-mounting hole, 64-locking bolt;

71-fuse holder, 711-middle fitting, 72-lower wiring terminal, 73-square neck bolt, 74-upper wiring terminal, 75-lower contact, 751-connecting arm, 752-jack, 753-contact piece, 76-upper contact, 761-guide hook.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 2 and fig. 3, the tool provided in this embodiment is applied to the assembly of an auxiliary drop-out fuse, and includes a bottom plate 1, a vertical support rod 21 is movably inserted in the middle of the bottom plate 1 along a height direction, one end of the vertical support rod 21, which is away from the bottom plate 1, is turned over to form a horizontal portion 22, the horizontal portion 22 is parallel to a width direction, and one end of the horizontal portion 22, which is away from the bottom plate 1, is provided with a hanging ring 23; a through hole is formed in the horizontal portion 22 along the length direction in a penetrating manner, and the through hole is used for the shaft pin 24 to pass through and fix; when assembled, the shaft pin 24 passes through the insertion hole of the middle fitting 711 and the through hole on the horizontal part 22 and is fixed; a first supporting block 3 is arranged on one side of the bottom plate 1, a first through groove 31 is formed at one end of the first supporting block 3, which is away from the bottom plate 1, in a penetrating manner along the length direction, and the first through groove 31 is used for limiting the lower wiring terminal 72 and is used for allowing a neck bolt 73 to pass through; a second supporting block 4 is arranged on the other side of the bottom plate 1, and the second supporting block 4 and the first supporting block 3 are oppositely arranged on two sides of the horizontal part 22 along the length direction; one end of the second support block 4, which is away from the bottom plate 1, is penetrated and formed with a second through groove 41 along the length direction, and the second through groove 41 is used for limiting an upper wiring terminal 74 and is used for allowing the square neck bolt 73 to pass through. It is understood that the length direction, width direction, and height direction expressed in the embodiment of the present utility model refer to the length direction, width direction, and height direction shown in fig. 2.

Compared with the prior art, in the embodiment, the middle part of the bottom plate 1 is movably inserted with the vertical support rod 21 along the height direction, the horizontal part 22 is provided with the hanging ring 23, in the assembling process, the L-shaped structure formed by the vertical support rod 21 and the horizontal part 22 can be hoisted on the assembly line equipment through the hanging ring 23, and the axle pin 24 is relied on to pass through the insertion hole of the middle hardware 711 of the fuse seat 71 and the through hole on the horizontal part 22 and be locked, so that the heavier fuse seat 71 can be firmly fixed on the L-shaped structure formed by the vertical support rod 21 and the horizontal part 22, and the L-shaped structure connected with the heavier fuse seat 71 can be installed on the assembling station of the bottom plate 1 in a mechanical mode by utilizing the assembly line equipment, thereby reducing the labor intensity and improving the production efficiency; meanwhile, as the connecting fixed point of the fuse seat 71 and the L-shaped structure is one of three reference holes on the fuse seat 71, and the fuse seat 71 can rotate around the axial direction of the shaft pin 24, the fuse seat 71 can be positioned and fixed more conveniently and accurately; the first through groove 31 and the second through groove 41 are matched through the L-shaped structure, three-point fixation is achieved, the upper wiring terminal 74 and the lower wiring terminal 72 are installed and fixed more stably and accurately, the positioning and fixing effects on all parts are improved, and therefore the quality of the fuse obtained through final assembly is improved. The first through groove 31 and the second through groove 41 reserve a tool operation space while restraining the lower connection terminal 72 and the upper connection terminal 74 from swinging in the width direction, ensuring the right after installation, so as to screw down the square neck bolt 73.

It should be noted that the vertical support bar 21 and the horizontal portion 22 are integrally provided to form an L-shaped structure, and the vertical support bar 21 is provided on the floor panel 1 at a position near the edge in the width direction, so that the front operation space can be made larger.

As shown in fig. 3, specifically, an end of the shaft pin 24 is formed with a socket hole penetrating in a radial direction of the shaft pin 24, and the socket hole is used for inserting the locking member 241. After the end of the shaft pin 24 with the insertion hole passes through the insertion hole of the middle fitting 711 of the fuse holder 71 and the through hole of the horizontal portion 22 and extends out of the horizontal portion 22, the locking member 241 is inserted into the insertion hole to achieve locking.

As shown in fig. 2 and 3, specifically, the bottom plate 1 is provided with a slot 15, and one end of the vertical strut 21 is provided with a flat portion matched with the slot 15, so that the vertical strut is convenient to be inserted into the slot 15 and stable by means of friction between the two, and can play a role in limiting rotation.

As shown in fig. 2, in some embodiments of the present utility model, the horizontal portion 22 is provided as a slope 221 gradually inclined in the height direction toward one side surface of the first support block 3, and the slope 221 gradually inclined toward one end of the base plate 1 toward the second support block 4. The inclination angle of the inclined surface 221 is kept at the same angle with the inclination angle of the mounting surface of the middle fitting 711 of the fuse holder 71, so that the mounting surface of the middle fitting 711 is fully abutted with the inclined surface 221, and the fuse holder 71 is positioned and fixed and then righted.

As shown in fig. 2 and 3, in some embodiments of the present utility model, a guide shaft 51 is disposed on the base plate 1 along a height direction, one end of the guide shaft 51 facing away from the base plate 1 is slidably connected with a support cylinder 52 along the height direction, and a spring 53 is disposed between the support cylinder 52 and the guide shaft 51; the support cylinder 52 is located relatively below the horizontal portion 22 in the height direction. The supporting cylinder 52 is supported in the middle of the fuse seat 71 and matched with the first supporting block 3 and the second supporting block 4, so that the upper contact 76 and the lower contact 75 can be conveniently installed and adjusted; meanwhile, through the arrangement of the springs 53, the fuse holder 71 can be driven to move up and down along the height direction in a more labor-saving mode, labor intensity is reduced, and therefore production efficiency is improved.

As shown in fig. 3, specifically, an end surface of the support cylinder 52 facing away from the bottom plate 1 forms a circular arc concave 521 distributed circumferentially around the longitudinal direction. In the assembly line equipment is installed the L type structure that is connected with heavier fuse seat 71 at the assembly station of bottom plate 1 through the mode of machinery, the compact laminating of circular arc concave surface 521 in the outer peripheral face of fuse seat 71, better supports fuse seat 71, and stability is good, further improves the assembly quality of fuse.

As shown in fig. 2 to 4, in some embodiments of the present utility model, the first support block 3 is provided with a first boss 32 at an end facing the vertical strut 21, and the first boss 32 is parallel to the length direction. The first boss 32 facilitates supporting the lower contact 75 when the fuse holder 71 is placed in an assembling station on the base plate 1 to further improve the assembling quality of the fuse.

Specifically, the two side walls of the first boss 32 along the width direction are respectively provided with a second boss 321, the second bosses 321 are parallel to the length direction, the second bosses 321 are arranged at one end of the side wall of the first boss 32 facing the bottom plate 1, and are used for supporting the contact sheet 753 for protecting the lower contact 75, so that the damage of the contact sheet 753 caused by scratching in the assembling process can be effectively avoided.

As shown in fig. 2 to 4, in some embodiments of the present utility model, the first support block 3 is symmetrically provided with support blocks 42 on both sides in the width direction, and each of the support blocks 42 is formed with a through hole therethrough in the width direction; a through cavity 33 is formed on the first support block 3 at a position corresponding to the perforation along the width direction, and the through cavity 33 penetrates through one side of the first support block 3 along the length direction; the through hole and the through cavity 33 are used for inserting a bolt 34; during assembly, the bolt 34 sequentially passes through the through hole, the jack 752 of the lower contact 75 and the through cavity 33, so that the lower contact 75 can be accurately positioned and fixed, and the two connecting arms 751 of the lower contact 75 along the width direction are respectively limited between the two supporting blocks 42 and the first supporting block 3, so that the lower contact 75 is prevented from swinging along the width direction when the square neck bolt 73 is screwed, and the assembly quality is further improved; meanwhile, the through cavity 33 penetrates through one side of the first supporting block 3 along the length direction, so that whether the lower contact 75 is in good contact with the bolt 34 can be checked conveniently.

In order to better support the lower contact 75, as shown in fig. 4, specifically, the dimension of the through cavity 33 in the width direction is larger than the dimension of the first boss 32 in the width direction.

As shown in fig. 3, in some embodiments of the present utility model, the first support block 3 is slidably disposed on the base plate 1 in a length direction; the position on the bottom plate 1 corresponding to the first supporting block 3 is provided with a strip-shaped through groove 11 along the length direction, the strip-shaped through groove 11 is used for a fastening bolt 12 to pass through, the position on one end of the first supporting block 3, which faces the bottom plate 1, corresponding to the strip-shaped through groove 11 is provided with two threaded holes at intervals along the length direction, and the threaded holes are arranged along the height direction and matched with the fastening bolt 12. The fastening bolt 12 can be screwed off from the threaded hole according to the dimension of the fuse holder 71 to be assembled in the length direction, and the distance between the first supporting block 3 and the second supporting block 4 can be adjusted to the position matched with the fuse holder 71 to be assembled in the length direction in a moving way, and the fastening bolt 12 is screwed for fixation, so that the fuse holder is suitable for assembling fuses with different sizes. For better assembly of fuses of different sizes, in particular, the slots 15 are provided as kidney-shaped slots arranged in the length direction.

Specifically, the first support block 3 is provided separately from the support block 42, and the support block 42 is slidably provided on the base plate 1 in the length direction; the bottom plate 1 is provided with long through grooves 16 along the length direction at positions corresponding to the supporting blocks 42, the long through grooves 16 are used for the fastening bolts 12 to pass through, the positions, corresponding to the long through grooves 16, of one end of the supporting blocks 42 facing the bottom plate 1 are also provided with two threaded holes at intervals along the length direction, and the threaded holes are arranged along the height direction and matched with the fastening bolts 12.

As shown in fig. 2 and 3, in some embodiments of the present utility model, a first limiting groove 43 is disposed at an end of the second supporting block 4 facing the first supporting block 3 in a height direction, the first limiting groove 43 communicates with the second through groove 41, and the first limiting groove 43 is used for limiting the upper connection terminal 74. The second through groove 41 and the first limiting groove 43 respectively limit the horizontal section and the vertical section of the upper terminal 74 from swinging in the width direction when the square neck bolt 73 is screwed down, ensuring the end positive of the upper terminal 74 after installation, thereby further improving the assembly quality of the fuse.

In some embodiments of the present utility model, a second limit groove 13 is disposed on the bottom plate 1 on a side of the second support block 4 facing the first support block 3, where the second limit groove 13 is in communication with the first limit groove 43, and the second limit groove 13 is used to define an upper contact 76; the second limiting groove 13 is communicated with a third limiting groove 14 along one side of the length direction away from the second supporting block 4, and the third limiting groove 14 is parallel to the width direction and is used for limiting a guide hook 761 of the upper contact 76. The second and third limit grooves 13 and 14 respectively limit the upper contact 76 and the guide hook 761 of the upper contact 76 from swinging in the width direction when the square neck bolt 73 is screwed down, ensuring the rightness of the upper contact 76 after installation, thereby further improving the assembly quality of the fuse.

In order to further reduce the weight of the tool, so as to carry; specifically, the third limiting groove 14 and the second limiting groove 13 penetrate through the bottom plate 1 along the height direction.

As shown in fig. 2, 3 and 5, in some embodiments of the present utility model, the tool further includes a base 6 for being mounted on a workbench, the base plate 1 is rotatably connected to the base 6, six limiting holes 61 are preferably provided on the base 6 at equal intervals along a circumferential direction, each of the limiting holes 61 penetrates through the base 6 along a height direction, and a lock hole is formed on the base plate 1 corresponding to a position of one of the limiting holes 61 along the height direction; when locked, the limiting pin 62 is inserted through the locking hole and one of the limiting holes 61. In the assembly process, the limiting pin 62 can be pulled out from the lock hole and the limiting hole 61 and reinserted into the limiting pin 62 for locking after the bottom plate 1 is driven to rotate to a proper angle relative to the base 6, so that multi-angle adjustment limiting is realized, and the assembly operation is convenient.

As shown in fig. 2, 3 and 5, in some embodiments of the present utility model, four mounting holes 63 are provided on the base 6 at equal intervals in the circumferential direction, each of the mounting holes 63 penetrates the base 6 in the height direction, and the mounting holes 63 are penetrated by a locking bolt 64 to fix the base 6 on a workbench, thereby facilitating assembly operation; simultaneously, the tool is convenient to detach from the workbench and carry to other positions for use.

In some embodiments of the present utility model, the bottom plate 1 is provided with a weight reducing hole 17, so as to reduce the weight of the whole tool, and not only facilitate carrying, but also balance the weight of two sides.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A tooling for assisting in the assembly of a drop-out fuse, the tooling comprising:

a bottom plate (1);

the vertical support rod (21) is movably inserted into the middle of the bottom plate (1) along the height direction, one end of the vertical support rod (21) deviating from the bottom plate (1) is folded to form a horizontal part (22), the horizontal part (22) is parallel to the width direction, and one end of the horizontal part (22) deviating from the bottom plate (1) is provided with a hanging ring (23); a through hole is formed in the horizontal part (22) in a penetrating manner along the length direction, and the through hole is used for the shaft pin (24) to pass through and be fixed; when the assembly is carried out, the shaft pin (24) passes through the insertion hole of the middle fitting (711);

the first supporting block (3) is arranged on one side of the bottom plate (1), a first through groove (31) is formed in a penetrating mode at one end, deviating from the bottom plate (1), of the first supporting block (3) along the length direction, the first through groove (31) is used for limiting the lower wiring terminal (72), and a neck bolt (73) of a supplier penetrates through the first through groove;

the second supporting blocks (4) are arranged on the bottom plate (1), and the second supporting blocks (4) and the first supporting blocks (3) are oppositely arranged on two sides of the horizontal part (22) along the length direction; one end of the second supporting block (4) deviating from the bottom plate (1) penetrates through the second through groove (41) along the length direction, and the second through groove (41) is used for limiting an upper wiring terminal (74) and passing through a square neck bolt (73).

2. A tool according to claim 1, wherein a guide shaft (51) arranged along the height direction is arranged on the bottom plate (1), one end of the guide shaft (51) away from the bottom plate (1) is connected with a support cylinder (52) in a sliding manner along the height direction, and a spring (53) is arranged between the support cylinder (52) and the guide shaft (51); the support cylinder (52) is located relatively below the horizontal portion (22) in the height direction.

3. A tooling according to claim 2, wherein the end surface of the support cylinder (52) facing away from the bottom plate (1) forms a circular arc concave surface (521) circumferentially distributed around the length direction, and the circular arc concave surface (521) is used for being attached to the outer peripheral surface of the fuse holder (71).

4. A tool according to claim 1, characterized in that the end of the first support block (3) facing the vertical strut (21) is provided with a first boss (32), the first boss (32) being parallel to the length direction and being adapted to support a lower contact (75).

5. The tooling according to claim 4, wherein two side walls of the first boss (32) along the width direction are respectively provided with a second boss (321), the second bosses (321) are parallel to the length direction, and the second bosses (321) are arranged at one end of the side walls of the first boss (32) facing the bottom plate (1) and are used for supporting contact pieces (753) for protecting the lower contact (75).

6. A tooling according to claim 1, wherein the first support blocks (3) are symmetrically provided with support blocks (42) along two sides of the width direction, and each support block (42) is provided with a through hole along the width direction; a through cavity (33) is formed in the first support block (3) at a position corresponding to the perforation along the width direction in a penetrating manner, and the through cavity (33) penetrates through one side of the first support block (3) along the length direction; the through hole and the through cavity (33) are used for inserting a bolt (34); when assembled, the latch (34) passes through a receptacle (752) of the lower contact (75).

7. A tool according to claim 1, wherein the first support block (3) is slidably arranged on the base plate (1) in the length direction; the position on bottom plate (1) corresponding to first supporting shoe (3) is arranged along length direction and is led to groove (11), bar leads to groove (11) and supplies fastening bolt (12) to pass, first supporting shoe (3) orientation one end of bottom plate (1) corresponds the position of bar leads to groove (11) is provided with the screw hole, the screw hole is arranged along the direction of height, and with fastening bolt (12) assorted.

8. A tool according to claim 1, wherein a first limit groove (43) is arranged in the height direction at one end of the second support block (4) towards the first support block (3), the first limit groove (43) is communicated with the second through groove (41), and the first limit groove (43) is used for limiting an upper wiring terminal (74).

9. A tool according to claim 1, wherein a second limit groove (13) arranged in the height direction is arranged on the side, facing the first support block (3), of the second support block (4) on the bottom plate (1), and the second limit groove (13) is used for defining an upper contact (76); the second limiting groove (13) is communicated with a third limiting groove (14) along one side, away from the second supporting block (4) in the length direction, of the second limiting groove, and the third limiting groove (14) is parallel to the width direction and is used for limiting a guide hook (761) of the upper contact (76).

10. A tool according to any one of claims 1 to 9, further comprising a base (6), wherein the base plate (1) is rotatably connected to the base (6), a plurality of limiting holes (61) are circumferentially spaced on the base (6), each limiting hole (61) penetrates through the base (6) in the height direction, and a lock hole is formed in the base plate (1) at a position corresponding to one of the limiting holes (61) in the height direction; and when in locking, the limiting pin (62) is inserted through the locking hole and one of the limiting holes (61).

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