CN109702676B

CN109702676B - Universal pipe wrench

Info

Publication number: CN109702676B
Application number: CN201910174507.1A
Authority: CN
Inventors: 陈伟华
Original assignee: Taizhou Better Tools Co ltd
Current assignee: Taizhou Baite Tools Co ltd
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2020-11-20
Anticipated expiration: 2039-03-08
Also published as: CN109702676A

Abstract

The invention discloses universal pipe tongs which comprise a first handle and a second handle and are characterized in that the first handle and the second handle are rotatably connected through a pin shaft, the first handle and the second handle are fixedly connected with a square box, an inner cavity is formed in the square box, a side groove is formed in the side wall of each square box, a sliding block is connected in each inner cavity in a sliding mode, and a jaw is fixedly connected to each sliding block. Has the advantages that: when placing the pipe fitting of various shapes between two keep silent and mediating two handles, the gum bag can with the edges and corners on the pipe fitting, protruding sunken perfect laminating, continue to extrude the handle and make first electric post that connects and the second connect when electric post offsets, when the handle was twisted to the electro-magnet circular telegram production magnetic field this moment, the gum bag all can produce torsion to the pipe fitting with every point of pipe fitting laminating, so make the stress that bears everywhere on the pipe fitting comparatively even, avoid stress concentration to lead to the pipe fitting to damage.

Description

Universal pipe wrench

Technical Field

The invention relates to the technical field of indoor decoration, in particular to universal pipe tongs with universality.

Background

The pipe wrench is one of common hardware tools, the common pipe wrench on the market comprises two straight-opening wrench mouths, the distance between the straight-opening wrench mouths is adjusted through a screw rod, so that a pipe fitting is clamped, and a handle is rotated to twist; the contact area between the forceps nozzle and the tube body is small, so that the forceps nozzle is easy to slip off and the tube body is easy to collapse during use, and certain potential safety hazards exist; meanwhile, the side walls of a plurality of pipe fittings in the existing life are irregular, the contact area between the common pipe tongs and the pipe fittings under the working condition is smaller, when the pipe tongs are screwed, the pressure applied to the side walls of the pipe fittings is often concentrated on one point, and the pipe fittings are easily damaged.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides universal pipe tongs with universality.

In order to achieve the purpose, the invention adopts the following technical scheme: a universal pipe wrench is characterized in that the first handle and the second handle are rotatably connected through a pin shaft, the first handle and the second handle are fixedly connected with a square box, an inner cavity is formed in the square box, a side groove is formed in the side wall of each square box, a sliding block is connected in each inner cavity in a sliding mode, a jaw is fixedly connected to each sliding block, one end, close to each other, of each jaw is glued with a colloidal capsule, and magnetorheological fluid is filled in each colloidal capsule;

two the equal fixedly connected with spring of inner chamber, every the spring is located one side that two inner chambers kept away from each other, every the spring all with slider welded fastening, every the inside fixed penetration of slider has a first electric post, every first electric post is located the outer part of slider and all overlaps the cover and establish in the spring that corresponds the position, every the one end that first electric post was kept away from to the spring is provided with the second and connects the electric post, the inner wall of second electricity post fixed connection at the square box, on the first in command and the second in command respectively electromagnet and battery of fixedly connected with, the first electric post that connects in two sliders uses wire electric connection, two the second connects electric post and electromagnet, battery to use wire electric connection in proper order.

In the universal pipe wrench, the jaw is of a concave structure, and the notches of the two jaws are opposite in direction.

In the universal pipe wrench, a torsional spring is arranged at the joint of the first handle and the second handle.

In the universal pipe wrench, one end of one of the second electric connecting posts, which is close to the corresponding first electric connecting post, is fixed with a piezoresistor.

Compared with the prior art, the invention has the advantages that:

the colloidal capsule under initial condition shows soft structure, place the pipe fitting of various shapes between two keep silent and when kneading two handles, the colloidal capsule can with the edges and corners on the pipe fitting, protruding sunken perfect laminating, when continuing to extrude the handle and make first electric post and the second electric post of answering offset, the electro-magnet circular telegram produces magnetic field and makes magnetorheological suspensions show stronger shearing yield hardness and be difficult to the deformation, when twisting the handle this moment, each point of colloidal capsule and pipe fitting laminating all can produce torsion to the pipe fitting, so make the stress that bears everywhere on the pipe fitting comparatively even, avoid stress concentration to lead to the pipe fitting to damage.

Drawings

FIG. 1 is a schematic diagram of a universal pipe wrench according to the present invention;

FIG. 2 is an enlarged schematic view of part A of a universal pipe wrench according to the present invention;

FIG. 3 is a schematic structural view of a joint between a square box and a jaw of the universal pipe wrench according to the present invention.

In the figure: the device comprises a first handle 1, a second handle 2, a square box 3, an inner cavity 4, a side groove 5, a sliding block 6, a jaw 7, a colloidal capsule 8, magnetorheological fluid 9, a spring 10, a first electric connecting column 11, a second electric connecting column 12, an electromagnet 13, a storage battery 14 and a torsion spring 15.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-3, a universal pipe wrench comprises a first handle 1 and a second handle 2, wherein the first handle 1 is rotatably connected with the second handle 2 through a pin shaft, the first handle 1 and the second handle 2 are fixedly connected with a square box 3, an inner cavity 4 is formed in the square box 3, a side groove 5 is formed in the side wall of each square box 3, a sliding block 6 is slidably connected in each inner cavity 4, a jaw 7 is fixedly connected on each sliding block 6, when the sliding blocks 6 slide in the inner cavities 4, the jaw 7 slides in the side groove 5, a colloid capsule 8 is glued at one end, close to each other, of each jaw 7, a magnetorheological fluid 9 is filled in each colloid capsule 8, and the shear yield hardness of the magnetorheological fluid 9 can change along with the magnetic field intensity;

the two inner cavities 4 are fixedly connected with a spring 10, each spring 10 is positioned on one side, far away from each other, of each inner cavity 4, each spring 10 is fixedly welded with the corresponding sliding block 6, a first electric pole 11 penetrates through the inside of each sliding block 6, the part, located outside the sliding block 6, of each first electric pole 11 is sleeved in the corresponding spring 10, one end, far away from the first electric pole 11, of each spring 10 is provided with a second electric pole 12, when the device is not used, the first electric pole 11 and the second electric pole 12 are in a relative power-off state, the electromagnet 13 is in a power-off non-magnetic state, the second electric pole 12 is fixedly connected to the inner wall of the square box 3, the first handle 1 and the second handle 2 are fixedly connected with an electromagnet 13 and a storage battery 14 respectively, the first electric poles 11 in the two sliding blocks 6 are electrically connected by using conducting wires, and the two second electric poles 12 and the electromagnet 13 are electrically connected, The batteries 14 are electrically connected in sequence using wires.

The jaws 7 are of a concave structure, and the notches of the two jaws 7 are opposite in direction, so that the two jaws 7 can clamp the pipe in the middle part in the using process of the device, and the colloid capsule 8 is well attached to the pipe;

the torsional spring 15 is arranged at the joint of the first handle 1 and the second handle 2, when the handles are loosened, the first handle 1 and the second handle 2 can rotate under the action of the torsional spring 15, so that the two jaws 7 are in an open state, and the two jaws can release the pipe after the pipe is twisted.

One end of one second electric connecting post 12, which is close to the corresponding first electric connecting post 11, is fixed with a piezoresistor, and the piezoresistor is connected in series in a circuit, in the using process, when the two jaws 7 clamp the pipe fitting and screw the handle, the first electric connecting post 11 and the second electric connecting post 12 are in a tight abutting state, the greater the force for screwing the handle, the greater the relative pressure of the two electric connecting posts, the greater the torsion force generated by the colloidal capsule 8 on the pipe fitting, and when the piezoresistor is arranged at the position, the greater the relative pressure of the two electric connecting posts, the smaller the electrical impedance of the piezoresistor, and vice versa; when the electrical impedance of the piezoresistor is smaller, the current flowing through the electromagnet 13 is larger, the generated magnetic field is stronger, the shearing yield hardness of the magnetorheological fluid 9 is larger, the magnetorheological fluid can bear larger torsion without deformation, but more electric energy of the storage battery 14 is consumed; conversely, the smaller the resistance is, the weaker the magnetic field is, the smaller the shear yield hardness of the magnetorheological fluid 9 is, and the less electric energy is consumed by the storage battery 14. To sum up: the piezoresistor is arranged here, so that the shearing yield hardness of the magnetorheological fluid 9 is increased along with the increase of the force for screwing the handle, thereby achieving the purpose of saving the energy of the storage battery 14.

In the invention, the device is moved to enable the two jaws 7 to be positioned at two sides of a pipe fitting to be twisted, the first handle 1 and the second handle 2 are extruded to enable the two jaws 7 to be close to each other, the two jaws 7 are also close to each other at the moment, the colloidal capsule 8 on the jaws 7 is in contact with the pipe fitting, the two handles are continuously extruded to enable the colloidal capsule 8 to be abutted against the pipe fitting, the magnetorheological fluid 9 does not feel a magnetic field and is in a common liquid property at the state, at the moment, the colloidal capsule 8 can be completely filled no matter the pipe fitting has any edge angle, bulge or depression, the contact surface of the colloidal capsule 8 and the pipe fitting is ensured to be perfectly attached, and the sliding blocks 6 in the two square boxes 3 synchronously slide in the inner cavity 4 and compress the spring 10 in the process;

when the sliding block 6 slides to the first electric connecting column 11 and the second electric connecting column 12 to be abutted against each other, the storage battery 14 and the electromagnet 13 form a closed loop, so that the electromagnet 13 generates a magnetic field, and the magnetorheological fluid can show extremely strong shearing yield hardness when receiving the magnetic field, even if the colloidal capsule 8 shows a solid property that deformation cannot be generated, because the colloidal capsule 8 is tightly attached to the pipe fitting at the moment, the pipe fitting can be screwed by simultaneously rotating the two handles, and because the pipe fitting is screwed under the state, torsion can be uniformly applied to the outer wall of the pipe fitting by the colloidal capsule 8, and the condition that the local stress concentration of the pipe fitting causes damage is avoided.

Although the terms first handle 1, second handle 2, square box 3, inner cavity 4, side slot 5, slider 6, jaw 7, gel capsule 8, magnetorheological fluid 9, spring 10, first electric pole 11, second electric pole 12, electromagnet 13, accumulator 14, torsion spring 15, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The universal pipe wrench is characterized in that the first handle (1) and the second handle (2) are rotatably connected through a pin shaft, the first handle (1) and the second handle (2) are fixedly connected with a square box (3), an inner cavity (4) is formed in the square box (3), a side groove (5) is formed in the side wall of each square box (3), a sliding block (6) is slidably connected in each inner cavity (4), a jaw (7) is fixedly connected on each sliding block (6), one end, close to each other, of each jaw (7) is glued with a colloidal bag (8), and magnetorheological fluid (9) is filled in each colloidal bag (8); two equal fixedly connected with spring (10) of inner chamber (4), every spring (10) are located one side that two inner chambers (4) kept away from each other, every spring (10) all with slider (6) welded fastening, every slider (6) inside fixed penetration has a first electric post (11), every first electric post (11) are located the outer part of slider (6) and all overlap and establish in spring (10) of corresponding position, every spring (10) keep away from the one end of first electric post (11) and are provided with second electric post (12), second electric post (12) fixed connection is at the inner wall of square box (3), on first in command (1) and second in command (2) respectively fixedly connected with an electro-magnet (13) and battery (14), first electric post (11) in two sliders (6) use wire electric connection, the two second electric connecting posts (12) are electrically connected with the electromagnet (13) and the storage battery (14) in sequence by using conducting wires;

the jaws (7) are of concave structures, and the notch directions of the two jaws (7) are opposite;

a torsion spring (15) is arranged at the joint of the first handle (1) and the second handle (2);

one end of one of the second electric connecting columns (12) close to the corresponding first electric connecting column (11) is fixed with a piezoresistor.