CN113427430A

CN113427430A - Precision laminating spanner

Info

Publication number: CN113427430A
Application number: CN202110593900.1A
Authority: CN
Inventors: 张惠芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-09-24

Abstract

The invention belongs to the technical field of hand tools, and particularly relates to a precision laminating wrench which comprises a handle, a mounting ring, an adjusting nut and an adjusting mechanism, wherein the handle is arranged on the mounting ring; the upper end of the handle is fixedly connected with a mounting ring; an adjusting nut is rotatably mounted in the right end wall of the mounting ring, and an adjusting mechanism is arranged in the middle of the mounting ring; the adjusting mechanism comprises a gear ring, an adjusting plate, a mounting groove, a sliding plate, a clamping block, a clamping groove, an extrusion rod and a sucker; the outer surfaces of the toothed rings are rotationally connected with the adjusting nut through threads, two toothed rings are arranged, and the toothed rings are symmetrically rotationally connected to the outer surfaces of the front side and the rear side of the mounting ring respectively; can promote the cladding plate when the rubber tube begins to expand and make the internal surface of cladding plate and the laminating of the upper and lower both sides surface of regulating plate to increase the frictional force of cladding plate internal surface and regulating plate surface by a wide margin, make strengthen the structural strength of self by a wide margin when twisting bolt or nut through this spanner, improve the durability of this spanner.

Description

Precision laminating spanner

Technical Field

The invention belongs to the technical field of hand tools, and particularly relates to a precision fitting wrench.

Background

The wrench is a common mounting and dismounting tool, and is a manual tool for screwing bolts, screws, nuts and other screw threads to tightly hold open or trepanning fasteners of the bolts or nuts by utilizing the lever principle. The wrench is typically made of structural steel of carbon or alloy material. The wrench is generally provided with an opening or a trepan for holding the bolt or the nut at one end or both ends of the handle portion, and when the wrench is used, the bolt or the nut can be screwed by applying an external force to the handle portion along the rotation direction of the thread.

The double offset ring spanner is also one kind of spanner, aim at the bolt, the head of nut is whole to be enclosed, consequently can not damage the bolt angle, and can apply big moment, but current double offset ring spanner is the shape is fixed usually, so can only carry out the dismouting to a bolt or nut, want different bolts of dismouting or nut then can only realize through changing double offset ring spanner, this undoubtedly make double offset ring spanner have had more carry inconvenient scheduling problem afterwards, there is certain space simultaneously between the head of current double offset ring spanner and bolt nut, will make like this and produce relative friction between double offset ring spanner and bolt and the nut, the head shape of bolt and nut can tend to circularly thus lead to being out of use after long-time rotation.

Disclosure of Invention

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a precision laminating wrench, which comprises a handle, a mounting ring, an adjusting nut and an adjusting mechanism, wherein the handle is arranged on the mounting ring; the upper end of the handle is fixedly connected with a mounting ring; an adjusting nut is rotatably mounted in the right end wall of the mounting ring, and an adjusting mechanism is arranged in the middle of the mounting ring; the adjusting mechanism comprises a gear ring, an adjusting plate, a mounting groove, a sliding plate, a clamping block, a clamping groove, an extrusion rod and a sucker; the outer surface of the toothed ring is rotatably connected with the adjusting nut through threads, two toothed rings are arranged, the toothed rings are respectively and symmetrically and rotatably connected to the outer surfaces of the front side and the rear side of the mounting ring, and the outer surfaces of the toothed rings are hinged with adjusting plates; six adjusting plates are uniformly arranged on the same toothed ring and are arranged in an arc shape, and the inner ends of the adjusting plates are hinged to the front side wall and the rear side wall of the inner end of the mounting plate; the outer end of the mounting plate is hinged to the inner wall of the mounting ring, and a cavity formed between the mounting plates is a hexagonal cavity.

An installation groove is formed in the inner end wall of the installation plate; a sliding plate is elastically and slidably connected in the mounting groove through a spring; and clamping blocks are symmetrically and fixedly arranged on the front side and the rear side of the outer end of the sliding plate.

The fixture block is the splayed setting, is equipped with the draw-in groove in the inside wall of fixture block, and the fixture block passes through the surface of draw-in groove joint at the adjacent regulating plate in right side.

An extrusion rod is connected in the lower end wall of the mounting plate in a sliding manner; the outer end of the extrusion rod is fixedly connected with a sucker, and the inner end of the extrusion rod is fixedly connected to the outer wall of the extrusion bag.

The extrusion bag is fixedly arranged in the inner end wall of the mounting plate, and an inner cavity of the extrusion bag is communicated with an inner cavity of the rubber tube; the pipe wall of the rubber pipe is corrugated, the outer end of the rubber pipe is fixedly connected to the upper inner surface and the lower inner surface of the clamping groove respectively, and the inner end of the rubber pipe is fixedly connected with a cladding plate; the cladding plate is arc-shaped and made of elastic metal materials, the radian of the cladding plate is larger than that of the adjusting plate at the beginning, the outer surface of the middle part of the cladding plate is hinged with a telescopic rod, and the inner surface of the cladding plate is symmetrically and fixedly connected with the bayonet; the outer end of the telescopic rod is fixedly connected to the upper inner surface and the lower inner surface of the clamping groove; the bayonet can be inserted into a groove in the wall of the adjusting plate.

The interior of the extrusion bladder is filled with a non-Newtonian fluid; the interior of the rubber tube is filled with non-Newtonian fluid; when the adjusting nut is rotated, the inner side of the adjusting nut is rotatably connected with the toothed ring, when the toothed ring rotates, the outer end of the adjusting plate hinged on the outer wall of the toothed ring rotates along with the toothed ring, because the inner end of the adjusting plate is hinged on the front and rear two side walls of the inner end of the mounting plate, and the outer end of the mounting plate is hinged on the inner wall of the mounting ring, when the toothed ring rotates due to the rotation of the adjusting nut, the inner end of the adjusting plate extrudes the other mounting plate which is clockwise adjacent to the inner end of the adjusting plate to the inner side, so that the sliding plate in the mounting plate slides to the outer side, the clamping groove of the front end clamping block of the sliding plate is always clamped on the adjacent adjusting plate, and then the free change of the size of the hexagonal cavity can be realized by rotating the adjusting nut, even if the wrench can be adapted to bolts or nuts with various types, the practicability of the wrench is greatly improved, before the inner surface of the mounting plate contacts with the outer surface of the bolts or nuts, the sucking disc of the inner side of the mounting plate can be contacted with the outer surface of the bolt or the nut firstly, the sucking disc can be firmly adsorbed on the outer surface of the bolt or the nut along with the gradual increase of the adjusting depth, when the pressure reaches a certain degree, the sucking disc can extrude the inner extrusion bag through the extrusion rod connected with the inner end of the sucking disc, when the extrusion bag is extruded, the inner pressure of the extrusion bag can be conveyed into the rubber tube, the tube wall of the rubber tube is corrugated, so that the rubber tube begins to expand towards the inner end, at the moment, the inner end of the rubber tube is connected with the cladding plate, when the rubber tube begins to expand, the cladding plate can be pushed to enable the inner surface of the cladding plate to be attached to the upper side surface and the lower side surface of the adjusting plate, the friction force between the inner surface of the cladding plate and the outer surface of the adjusting plate is greatly increased, the self structural strength is greatly enhanced when the bolt or the nut is screwed through the wrench, and the durability of the wrench is improved, meanwhile, the phenomenon that the bolt or the nut slides in a staggered manner between the hexagonal cavity and the mounting plate can be greatly reduced through the fixation of the sucking disc, the problem that the bolt or the nut cannot be used due to the fact that the head of the bolt or the nut tends to be in a disc shape after being used for a long time is solved, meanwhile, the cladding plate is made of elastic metal materials, the radian of the cladding plate is larger than that of the adjusting plate when the radian of the cladding plate is initial, and the clamping thorns are symmetrically and fixedly connected with the inner surface of the cladding plate, so that a thrust force can be generated on the cladding plate when the extrusion bag conveys the internal pressure of the extrusion bag into the rubber pipe, the middle part of the cladding plate is enabled to continue moving towards the inner end for a certain distance, the clamping thorns on the inner surface of the cladding plate are clamped into the groove of the adjusting plate, namely, the head of the bolt or the nut can be fixed to prevent dislocation, the position of a clamping block can be fixed, and the structural strength of the wrench is greatly enhanced, and because the inside packing of extrusion bag has non-Newtonian fluid, the inside packing of rubber tube has non-Newtonian fluid, so pressure transmission between extrusion bag and the rubber tube is gone on by non-Newtonian fluid, when people twist this spanner in the twinkling of an eye, thereby because the extrusion bag in the mounting panel inner wall receives high-strength pressure in the twinkling of an eye and leads to extrusion bag and rubber tube to solidify to a certain extent, can carry out the self-protection when using this spanner to cause pressure to bolt or nut in the twinkling of an eye promptly, the life of this spanner has been promoted by a wide margin, also promoted simultaneously by a wide margin and twisted the cladding dynamics to it when bolt or nut, furthest's reduction mounting panel and the frictional force of bolt or nut head.

The invention has the following beneficial effects:

1. when adjusting nut is rotated, the ring gear that its inboard rotation is connected can follow it and rotate, and when the ring gear takes place to rotate articulated regulating plate outer end follows the ring gear and rotates on its outer wall, articulate on the wall of the inner front and back both sides of mounting panel because of the inner of regulating plate, and the outer end of mounting panel articulates on the inner wall of mounting ring, so when the ring gear rotates because adjusting nut's rotation, the inner of regulating plate can extrude clockwise another mounting panel to the inboard, thereby make the sliding plate in the mounting panel slide to the outside, make the draw-in groove of sliding plate front end fixture block joint all the time on adjacent regulating plate, and then can realize the free change to the hexagon cavity size through rotating adjusting nut, even get the bolt or the nut of this spanner can the multiple different models of adaptation, improve the practicality of this spanner by a wide margin.

2. Before the inner surface of the mounting plate is contacted with the outer surface of the bolt or the nut, the sucker on the inner side of the mounting plate is contacted with the outer surface of the bolt or the nut firstly, the sucker is firmly adsorbed on the outer surface of the bolt or the nut along with the gradual increase of the adjusting depth, when the pressure reaches a certain degree, the sucker extrudes the internal extrusion bag through the extrusion rod connected with the inner end of the sucker, when the extrusion bag is extruded, the internal pressure of the extrusion bag is conveyed into the rubber tube, the tube wall of the rubber tube is corrugated, so that the rubber tube begins to expand towards the inner end, at the moment, the inner end of the rubber tube is connected with the cladding plate, when the rubber tube begins to expand, the cladding plate is pushed to enable the inner surface of the cladding plate to be attached to the surfaces of the upper side and the lower side of the adjusting plate, thereby the friction force between the inner surface of the cladding plate and the outer surface of the adjusting plate is greatly increased, and the structural strength of the spanner is greatly enhanced when the bolt or the nut is screwed, the durability of the wrench is improved.

3. The phenomenon that the bolt or the nut slides in a staggered manner between the hexagonal cavity and the mounting plate can be greatly reduced by fixing the sucker, the problem that the head of the bolt or the nut tends to be disc-shaped after the bolt or the nut is used for a long time to cause incapability of use is avoided, meanwhile, the cladding plate is made of elastic metal materials and is larger than the adjusting plate when the radian of the cladding plate is initial, and the bayonet is symmetrically and fixedly connected with the inner surface of the cladding plate, so that thrust can be generated on the cladding plate when the extrusion bag conveys the internal pressure of the extrusion bag into the rubber pipe, the middle part of the cladding plate is enabled to continue moving towards the inner end for a certain distance, the bayonet on the inner surface of the cladding plate is enabled to be clamped into the groove of the adjusting plate, namely, the head of the bolt or the nut is fixed to prevent dislocation, the position of a fixture block can be fixed, and the structural strength of the wrench is greatly enhanced, and because the inside packing of extrusion bag has non-Newtonian fluid, the inside packing of rubber tube has non-Newtonian fluid, so pressure transmission between extrusion bag and the rubber tube is gone on by non-Newtonian fluid, when people twist this spanner in the twinkling of an eye, thereby because the extrusion bag in the mounting panel inner wall receives high-strength pressure in the twinkling of an eye and leads to extrusion bag and rubber tube to solidify to a certain extent, can carry out the self-protection when using this spanner to cause pressure to bolt or nut in the twinkling of an eye promptly, the life of this spanner has been promoted by a wide margin, also promoted simultaneously by a wide margin and twisted the cladding dynamics to it when bolt or nut, furthest's reduction mounting panel and the frictional force of bolt or nut head.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic view of the construction of the mounting ring of the present invention;

FIG. 3 is a cross-sectional view of the mounting plate of the present invention;

FIG. 4 is a side cross-sectional view of the mounting plate of the present invention;

FIG. 5 is a schematic view of the construction of the cladding sheet of the present invention;

in the figure: the handle 1, the mounting ring 2, the adjusting nut 3, the adjusting mechanism 4, the toothed ring 41, the adjusting plate 42, the mounting plate 43, the mounting groove 44, the sliding plate 45, the clamping block 46, the clamping groove 47, the extrusion rod 48, the suction cup 49, the extrusion bag 5, the rubber tube 6, the cladding plate 7, the telescopic rod 8 and the bayonet 9.

Detailed Description

A precision binding wrench according to an embodiment of the present invention will be described below with reference to fig. 1 to 5.

As shown in fig. 1-5, the precision laminating wrench of the present invention comprises a handle 1, a mounting ring 2, an adjusting nut 3 and an adjusting mechanism 4; the upper end of the handle 1 is fixedly connected with a mounting ring 2; an adjusting nut 3 is rotatably mounted in the right end wall of the mounting ring 2, and an adjusting mechanism 4 is arranged in the middle of the mounting ring 2; the adjusting mechanism 4 comprises a toothed ring 41, an adjusting plate 42, a mounting plate 43, a mounting groove 44, a sliding plate 45, a clamping block 46, a clamping groove 47, an extrusion rod 48 and a suction cup 49; the outer surface of the gear ring 41 is rotatably connected with the adjusting nut 3 through threads, two gear rings 41 are arranged, the gear rings 41 are respectively and symmetrically and rotatably connected to the outer surfaces of the front side and the rear side of the mounting ring 2, and the outer surfaces of the gear rings 41 are hinged with adjusting plates 42; six adjusting plates 42 are uniformly arranged on the same toothed ring 41, the adjusting plates 42 are arranged in an arc shape, and the inner ends of the adjusting plates 42 are hinged to the front side wall and the rear side wall of the inner end of the mounting plate 43; the outer end of the mounting plate 43 is hinged on the inner wall of the mounting ring 2, and a cavity formed between the mounting plates 43 is a hexagonal cavity.

An installation groove 44 is formed in the inner end wall of the installation plate 43; a sliding plate 45 is elastically and slidably connected in the mounting groove 44 through a spring; the outer end of the sliding plate 45 is symmetrically and fixedly provided with clamping blocks 46 at the front side and the rear side.

The fixture block 46 is arranged in a splayed shape, a clamping groove 47 is formed in the inner side wall of the fixture block 46, and the fixture block 46 is clamped on the outer surface of the adjacent adjusting plate 42 on the right side through the clamping groove 47.

A squeezing rod 48 is slidably connected in the lower end wall of the mounting plate 43; the outer end of the extrusion rod 48 is fixedly connected with a suction cup 49, and the inner end of the extrusion rod 48 is fixedly connected to the outer wall of the extrusion bag 5.

The extrusion bag 5 is fixedly arranged in the inner end wall of the mounting plate 43, and the inner cavity of the extrusion bag 5 is communicated with the inner cavity of the rubber tube 6; the pipe wall of the rubber pipe 6 is corrugated, the outer end of the rubber pipe 6 is fixedly connected to the upper inner surface and the lower inner surface of the clamping groove 47 respectively, and the inner end of the rubber pipe 6 is fixedly connected with the cladding plate 7; the cladding plate 7 is arc-shaped, the cladding plate 7 is made of elastic metal materials, the radian of the cladding plate 7 is larger than that of the adjusting plate 42 at the beginning, the outer surface of the middle part of the cladding plate 7 is hinged with a telescopic rod 8, and the inner surface of the cladding plate 7 is symmetrically and fixedly connected with the clamping thorn 9; the outer end of the telescopic rod 8 is fixedly connected to the upper inner surface and the lower inner surface of the clamping groove 47; the bayonet catch 9 can be inserted into a recess in the wall of the adjustment plate 42.

The interior of the squeeze bag 5 is filled with a non-Newtonian fluid; the interior of the rubber tube 6 is filled with non-Newtonian fluid; when the adjusting nut 3 is rotated, the inner side of the adjusting nut is rotatably connected with the toothed ring 41 to rotate along with the toothed ring, when the toothed ring 41 rotates, the outer end of the adjusting plate 42 hinged on the outer wall of the adjusting ring 41 rotates along with the toothed ring 41, the inner end of the adjusting plate 42 is hinged on the front and rear side walls of the inner end of the mounting plate 43, and the outer end of the mounting plate 43 is hinged on the inner wall of the mounting ring 2, so when the toothed ring 41 rotates due to the rotation of the adjusting nut 3, the inner end of the adjusting plate 42 extrudes the other mounting plate 43 which is clockwise adjacent to the inner side, thereby the sliding plate 45 in the mounting plate 43 slides outwards, the clamping groove 47 of the front end clamping block 46 of the sliding plate 45 is always clamped on the adjacent adjusting plate 42, and then the free change of the size of the hexagonal cavity can be realized by rotating the adjusting nut 3, even if the wrench can be adapted to bolts or nuts of various types, the practicability of the wrench is greatly improved, before the inner surface of the mounting plate 43 contacts with the outer surface of the bolt or the nut, the suction cup 49 on the inner side of the mounting plate 43 contacts with the outer surface of the bolt or the nut, and the suction cup 49 is firmly adsorbed on the outer surface of the bolt or the nut along with the gradual increase of the adjusting depth, when the pressure reaches a certain degree, the suction cup 49 extrudes the internal extrusion bag 5 through the extrusion rod 48 connected with the inner end of the suction cup 49, when the extrusion bag 5 is extruded, the internal pressure of the extrusion bag is conveyed into the rubber tube 6, and the tube wall of the rubber tube 6 is corrugated, so that the rubber tube 6 begins to expand towards the inner end, at the moment, the inner end of the rubber tube 6 is connected with the cladding plate 7, so that the cladding plate 7 is pushed to enable the inner surface of the cladding plate 7 to be attached to the upper side surface and the lower side surface of the adjusting plate 42 when the rubber tube 6 begins to expand, and the friction force between the inner surface of the cladding plate 7 and the outer surface of the adjusting plate 42 is greatly increased, so that the structure strength of the wrench is greatly enhanced when the bolt or the nut is screwed by the wrench, the durability of the wrench is improved, meanwhile, the phenomenon that the bolt or the nut slides in a staggered manner in a hexagonal cavity and between the installation plate 43 can be greatly reduced by fixing the sucker 49, the problem that the head of the bolt or the nut tends to be disc-shaped after long-time use to cause the bolt or the nut to be unusable is avoided, meanwhile, as the cladding plate 7 is arc-shaped, the cladding plate 7 is made of elastic metal material, the radian of the cladding plate 7 is larger than that of the adjusting plate 42 at the beginning, and the bayonet 9 is symmetrically and fixedly connected with the inner surface of the cladding plate 7, when the extrusion bag 5 conveys the internal pressure into the rubber tube 6, a thrust force is generated on the cladding plate 7, so that the middle part of the cladding plate 7 continues to move a distance towards the inner end, so that the bayonet 9 on the inner surface of the cladding plate 7 is clamped into the groove of the adjusting plate 42, namely, the head of the bolt or the nut can be fixed and can prevent dislocation, and simultaneously the position of the fixture block 46 can be fixed, thereby greatly enhancing the structural strength of the wrench, and because the interior of the extrusion bladder 5 is filled with the non-Newtonian fluid and the interior of the rubber tube 6 is filled with the non-Newtonian fluid, therefore, the pressure transmission between the extrusion bag 5 and the rubber tube 6 is carried out by the non-Newtonian fluid, when people instantly screw the wrench, since the bladder 5 in the inner wall of the mounting plate 43 is instantaneously subjected to a high pressure to cause the bladder 5 and the rubber tube 6 to be cured to some extent, namely, the wrench can carry out self-protection when the wrench is used for instantly generating pressure on the bolt or the nut, thereby greatly prolonging the service life of the wrench, meanwhile, the coating force of the bolt or the nut when the bolt or the nut is screwed is greatly improved, and the friction force between the mounting plate 43 and the head of the bolt or the nut is reduced to the greatest extent.

The specific working process is as follows:

when the adjustable nut is used, the hexagonal cavity in the mounting ring 2 can be covered on a bolt or a nut to be screwed, then the adjusting nut 3 is rotated, when the adjusting nut 3 is rotated, the toothed ring 41 rotationally connected with the inner side of the adjusting nut can rotate along with the adjusting nut, when the toothed ring 41 rotates, the outer end of the adjusting plate 42 hinged on the outer wall of the adjusting nut rotates along with the toothed ring 41, because the inner end of the adjusting plate 42 is hinged on the front and rear side walls of the inner end of the mounting plate 43, and the outer end of the mounting plate 43 is hinged on the inner wall of the mounting ring 2, when the toothed ring 41 rotates due to the rotation of the adjusting nut 3, the inner end of the adjusting plate 42 can extrude the other mounting plate 43 which is clockwise adjacent inwards, so that the sliding plate 45 in the mounting plate 43 slides outwards, the clamping groove 47 of the clamping block 46 at the front end of the sliding plate 45 is always clamped on the adjacent adjusting plate 42, and further, the size of the hexagonal cavity can be freely changed by rotating the adjusting nut 3, before the inner surface of the mounting plate 43 contacts with the outer surface of the bolt or the nut, the suction cups 49 on the inner side of the mounting plate 43 contact with the outer surface of the bolt or the nut, the suction cups 49 are firmly adsorbed on the outer surface of the bolt or the nut along with the gradual increase of the adjusting depth, when the pressure reaches a certain degree, the suction cups 49 extrude the internal extrusion bag 5 through the extrusion rods 48 connected with the inner ends of the suction cups, when the extrusion bag 5 is extruded, the internal pressure is conveyed into the rubber tube 6, the tube wall of the rubber tube 6 is corrugated, so that the rubber tube 6 begins to expand towards the inner end, at the moment, the inner end of the rubber tube 6 is connected with the cladding plate 7, when the rubber tube 6 begins to expand, the cladding plate 7 is pushed to enable the inner surface of the cladding plate 7 to be attached to the upper side surface and the lower side surface of the adjusting plate 42, thereby greatly increasing the friction force between the inner surface of the cladding plate 7 and the outer surface of the adjusting plate 42, greatly enhancing the structural strength of the wrench when the wrench is used for screwing the bolt or the nut, improving the durability of the wrench, simultaneously greatly reducing the phenomenon that the bolt or the nut slides in a staggered way between the hexagonal cavity and the mounting plate 43 through the fixation of the sucking disc 49, avoiding the problem that the head of the bolt or the nut tends to be disc-shaped after long-time use and can not be used, simultaneously, because the cladding plate 7 is arc-shaped, the cladding plate 7 is made of elastic metal material, the radian of the cladding plate 7 is larger than that of the adjusting plate 42 when being initial, the inner surface of the cladding plate 7 is symmetrically and fixedly connected with the bayonet 9, so that when the extrusion capsule 5 conveys the internal pressure into the rubber tube 6, a thrust can be generated to the cladding plate 7, thereby promoting the middle part of the cladding plate 7 to continuously move a distance towards the inner end, so that the bayonet 9 on the inner surface of the cladding plate 7 is clamped into the groove of the adjusting plate 42, namely the head of the bolt or the nut is fixed to prevent dislocation, and simultaneously the position of the clamping block 46 can be fixed, thereby greatly enhancing the structural strength of the wrench, and because the extrusion bag 5 is filled with non-Newtonian fluid and the rubber tube 6 is filled with non-Newtonian fluid, the pressure transmission between the extrusion bag 5 and the rubber tube 6 is carried out by the non-Newtonian fluid, when people twist the wrench instantly, because the extrusion bag 5 in the inner wall of the mounting plate 43 is instantly subjected to high-strength pressure, the extrusion bag 5 and the rubber tube 6 are solidified to a certain extent, namely, the self-protection can be carried out when the wrench is used for instantly generating pressure on the bolt or the nut, the service life of the wrench is greatly prolonged, and meanwhile, the cladding strength of the bolt or the nut when being twisted is also greatly improved, the friction between the mounting plate 43 and the head of the bolt or nut is reduced to the maximum extent.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A precision fitting wrench comprises a grip (1), a mounting ring (2), an adjusting nut (3) and an adjusting mechanism (4); the method is characterized in that: the upper end of the handle (1) is fixedly connected with a mounting ring (2); an adjusting nut (3) is rotatably mounted in the right end wall of the mounting ring (2), and an adjusting mechanism (4) is arranged in the middle of the mounting ring (2); the adjusting mechanism (4) comprises a toothed ring (41), an adjusting plate (42), a mounting plate (43), a mounting groove (44), a sliding plate (45), a clamping block (46), a clamping groove (47), an extrusion rod (48) and a sucking disc (49); the outer surface of the gear ring (41) is rotatably connected with the adjusting nut (3) through threads, two gear rings (41) are arranged, the gear rings (41) are respectively and symmetrically and rotatably connected to the outer surfaces of the front side and the rear side of the mounting ring (2), and the outer surface of each gear ring (41) is hinged with an adjusting plate (42); six adjusting plates (42) are uniformly arranged on the same toothed ring (41), the adjusting plates (42) are arranged in an arc shape, and the inner ends of the adjusting plates (42) are hinged to the front side wall and the rear side wall of the inner end of the mounting plate (43); the outer end of the mounting plate (43) is hinged to the inner wall of the mounting ring (2), and a cavity formed between the mounting plates (43) is a hexagonal cavity.

2. The precision laminating wrench of claim 1, wherein: the inner end wall of the mounting plate (43) is provided with a mounting groove (44); a sliding plate (45) is elastically and slidably connected in the mounting groove (44) through a spring; the front side and the rear side of the outer end of the sliding plate (45) are symmetrically and fixedly provided with clamping blocks (46).

3. The precision laminating wrench of claim 2, wherein: the fixture block (46) is arranged in a splayed manner, a clamping groove (47) is formed in the inner side wall of the fixture block (46), and the fixture block (46) is clamped on the outer surface of the adjacent adjusting plate (42) on the right side through the clamping groove (47).

4. The precision laminating wrench of claim 2, wherein: a squeezing rod (48) is connected in the lower end wall of the mounting plate (43) in a sliding manner; the outer end of the extrusion rod (48) is fixedly connected with a sucking disc (49), and the inner end of the extrusion rod (48) is fixedly connected to the outer wall of the extrusion bag (5).

5. The precision laminating wrench of claim 4, wherein: the extrusion bag (5) is fixedly arranged in the inner end wall of the mounting plate (43), and the inner cavity of the extrusion bag (5) is communicated with the inner cavity of the rubber tube (6); the pipe wall of the rubber pipe (6) is corrugated, the outer end of the rubber pipe (6) is fixedly connected to the upper inner surface and the lower inner surface of the clamping groove (47) respectively, and the inner end of the rubber pipe (6) is fixedly connected with a cladding plate (7); the cladding plate (7) is arc-shaped, the cladding plate (7) is made of elastic metal materials, the radian of the cladding plate (7) is larger than that of the adjusting plate (42) at the beginning, the outer surface of the middle part of the cladding plate (7) is hinged with a telescopic rod (8), and the inner surface of the cladding plate (7) is symmetrically and fixedly connected with the clamping thorn (9); the outer end of the telescopic rod (8) is fixedly connected to the upper inner surface and the lower inner surface of the clamping groove (47); the bayonet (9) can be inserted into a groove in the wall of the adjusting plate (42).

6. The precision laminating wrench of claim 5, wherein: the interior of the extrusion bladder (5) is filled with non-Newtonian fluid; the rubber tube (6) is filled with non-Newtonian fluid.