CN107509295A - A kind of anti-explosion magnetic chuck - Google Patents

Abstract

The invention discloses an explosion-proof magnetic chuck, which comprises an insulating jacket; the interior of the insulating jacket is provided with an inner cavity, one end of the insulating jacket is open; the other end is closed; and the open end of the insulating jacket is also equipped with an annular sleeve ; while the other end of the annular sleeve is installed with a fixed magnetic steel. The installation and fixing method of the device in the present invention is installed by the suction force of the magnet. Since most of the static electricity continues on the ferrous object, the characteristics of the magnetic steel are just used to fix the overall device, and it is very convenient to fix and disassemble; and In the present invention, the conductive thimble and the conductive ejector rod are in the state of pressing under the action of the tightening spring. When the magnetic steel is fixed on the iron object, the thimble will be pressed against the surface of the iron object to ensure that it is compatible with the object. Contact, and the thimble has a certain piercing ability, which can pierce the barrier of paint or rust, so as to ensure that it can effectively discharge static electricity and reduce potential safety hazards.

Description

An explosion-proof magnetic chuck

technical field

The invention relates to safety facilities and equipment, in particular to an explosion-proof magnetic chuck.

Background technique

In flammable gas, dust environment, oil refinery, petrochemical plant, gas station, gas station and other environments where explosion may occur, static electricity will be generated and accumulated arbitrarily, if the accumulated static electricity cannot be channeled, it will have very serious consequences; the existing Explosion-proof chucks used to discharge static electricity usually use wires to guide static electricity to the ground, but the chucks used for fixing existing devices are usually clamped and fixed by chucks with crocodile mouth structure, and the other end of the chuck can be connected to wires. The equipment fixing method of this structure is troublesome and has great limitations. In some special environments, the chuck may not be able to be used; and if there is rust or paint on the column with static electricity, the chuck After the head is clamped, it cannot be directly contacted with the electrostatically charged part, so there will be a great potential safety hazard.

Contents of the invention

The object of the present invention is to provide an explosion-proof magnetic clamp that is easy to use and eliminates potential safety hazards in view of the deficiencies in the prior art.

Technical solution: The technical solution adopted by the present invention to solve the problem is: an explosion-proof magnetic chuck, including an insulating jacket; the interior of the insulating jacket is provided with an inner cavity, and one end of the insulating jacket is open; one end is closed; and the The open end of the insulating jacket is also equipped with an annular sleeve; the other end of the annular sleeve is installed with a fixed magnet, and the inside of the fixed magnet is correspondingly provided with a central hole; the inner of the insulating jacket is A conductive push rod is installed in the cavity, and a tension spring is installed between the inner end of the conductive push rod and the bottom end of the inner cavity of the insulating jacket; and a conductive thimble is installed on the outer end of the conductive push rod, and the The conductive thimble protrudes from the annular sleeve and the central hole of the fixed magnetic steel under the action of the tightening spring; a conductive hole is also opened at the closed end of the inner cavity in the insulating jacket, and a conductive hole is installed in the conductive hole. There are outward conductive devices.

As a preference, the outward conductive device can be set as a wire, one end of the wire extends from the conductive hole and directly connects to the conductive push rod; and the other end is connected to an electrostatic grounding alarm.

As a preference, said outward conductive device is a threaded conductive rod; said threaded conductive rod extends into the inner cavity from the conductive hole and is mounted on the end of the conductive push rod, and said threaded conductive rod is mounted on the top In the spring inner ring of the tight spring, and the end of the threaded conductive rod is also equipped with a conductive ring, a wire is arranged on the conductive ring, and the wire is connected to the static grounding alarm; and the outer rod end of the threaded conductive rod is also installed Limit bolts.

As a preference, the inner end of the conductive push rod is also provided with a threaded hole matching the threaded conductive rod, and the threaded conductive rod is detachably installed in the threaded hole after being inserted into the inner cavity from the conductive hole

As a preference, the upper side of the inner cavity of the insulating jacket is also provided with a through waist-shaped groove; and the two sides of the waist-shaped groove are provided with limiting grooves extending to both sides; and the conductive push rod is Correspondingly, a limit rod is provided, and the limit rod protrudes from the waist-shaped groove, and can be rotated correspondingly and screwed into the limit groove.

Preferably, the fixed magnet is configured as a circular magnet, and the outer diameter of the central hole of the fixed magnet is larger than the outer diameter of the conductive thimble.

Beneficial effect: compared with the prior art, the present invention has the following advantages:

(1) The installation and fixing method of the device in the present invention is installed by the suction force of the magnet. Since most of the static electricity continues on the ferrous object, the characteristics of the magnetic steel are used to fix the whole device, and it is easy to fix and disassemble. Convenience; and in the present invention, the conductive thimble and the conductive push rod are in the state of top pressure under the action of the tightening spring. When the magnetic steel is fixed on the iron object, the thimble will be pressed against the surface of the iron object to ensure It is in contact with objects, and the thimble has a certain piercing ability, which can pierce the barrier of paint or rust, so as to ensure that it can effectively discharge static electricity and reduce potential safety hazards;

(2) The dredging of static electricity among the present invention can be finished static dredging by arranging a wire on the conductive push rod; In addition, the dredging of static electricity in the present invention can also install a conductive threaded rod at the end of the conductive push rod, conductive thread The end of the rod is provided with a conductive ring, which can be installed with wires to complete static electricity dredging, and the rod of the conductive threaded rod is also equipped with a limit bolt. After the conductive threaded rod is pulled inward, the position of the limit bolt can be adjusted to fix the position of the conductive thimble. ;In this way, the conductive thimble can be fixed in the center hole when it is not in use, so as to prevent other people from being stabbed, or the needle from being pierced to other places to damage the needle;

(3) The present invention also provides a structure that can fix the conductive thimble in the central hole, that is, a concave groove is provided on the upper side of the inner cavity, and a stop rod is installed on the conductive push rod, which is an insulating structure. It can drive the conductive ejector rod to move back and forth in the inner cavity, pull the conductive ejector rod backward, and then rotate an angle and screw it into the limit groove to fix the conductive ejector pin in the center hole, and the conductive threaded rod in this device is connected with the The conductive ejector rod is detachable and installed. When the conductive threaded rod is removed and the wire is directly installed, it can be used to fix the conductive ejector pin through the operation of the limit rod, and has multiple selection functions;

(4) The electrostatic dredging wires in the present invention are all connected to the static grounding alarm. The static grounding alarm adopts a lithium battery to supply power, and uses a microelectronic circuit to continuously detect the resistance value of the connection equipment loop and the grounding terminal loop. If it is found that the conductive thimble does not When it comes into contact with an electrostatic object, that is, when an open circuit occurs, an audible alarm will be issued immediately to serve as a warning.

Description of drawings

Fig. 1 is a mechanism schematic diagram of the present invention;

Fig. 2 is the installation structure schematic diagram of conductive threaded rod among the present invention;

Fig. 3 is a partial view of direction A in Fig. 2;

Fig. 4 is a schematic diagram of the connection between the present invention and the static grounding alarm.

detailed description

The present invention will be further illustrated below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in Figures 1 to 4, an explosion-proof magnetic chuck includes an insulating jacket 1; the inside of the insulating jacket 1 is provided with an inner cavity 2, and one end of the insulating jacket 1 is open; one end is closed; and the insulating An annular sleeve 3 is also installed on the open end of the overcoat 1; a fixed magnetic steel 4 is installed on the other end of the annular sleeve 3, and a central hole 41 is correspondingly provided inside the fixed magnetic steel 4; A conductive push rod 5 is installed in the inner cavity 2 of the insulating jacket 1, and a tightening spring 6 is installed between the inner end of the conductive push rod 5 and the bottom end of the inner cavity 2 of the insulating jacket 1; The outer end of 5 is equipped with a conductive thimble 7, and the conductive thimble 7 protrudes from the annular sleeve 3 and the central hole 41 of the fixed magnetic steel 4 under the action of the tightening spring 6; A conductive hole 21 is opened at the closed end of the inner cavity 2, and an outward conductive device is installed in the conductive hole 21.

The outward conductive device can be set as a wire 8, and one end of the wire 8 extends from the conductive hole 21 and directly connects to the conductive mandrel 5;

The outward conductive device is a threaded conductive rod 10; the threaded conductive rod 10 extends into the inner cavity 2 from the conductive hole 21 and is installed on the end of the conductive push rod 5, and the threaded conductive rod 10 Installed in the spring inner ring of the top tension spring 6, and the end of the threaded conductive rod 10 is also equipped with a conductive ring 11, a conductive ring 11 is provided with a lead, and the lead is connected to the static grounding alarm 9; and the thread The outer rod end of the conductive rod 10 is also equipped with a limit bolt 12 .

The inner end of the conductive push rod 5 is also provided with a threaded hole 51 that is compatible with the threaded conductive rod 10. Hole 51

The upper side of the inner cavity 2 in the insulating jacket 1 is also provided with a penetrating waist-shaped groove 13; and the two sides of the waist-shaped groove 13 are provided with limiting grooves 14 extending to both sides; and the conductive push rod 5 is correspondingly provided with a limiting rod 15, which protrudes from the waist-shaped groove 13 and can be screwed into the limiting groove 14 after corresponding rotation.

The fixed magnet 4 is set as a circular magnet, and the outer diameter of the central hole 41 of the fixed magnet 4 is larger than the outer diameter of the conductive thimble 7 .

The installation and fixing method of the device in the present invention is installed by the suction force of the magnet. Since most of the static electricity continues on the ferrous object, the characteristics of the magnetic steel are just used to fix the overall device, and it is very convenient to fix and disassemble; and In the present invention, the conductive thimble and the conductive ejector rod are in the state of pressing under the action of the tightening spring. When the magnetic steel is fixed on the iron object, the thimble will be pressed against the surface of the iron object to ensure that it is compatible with the object. Contact, and the thimble has a certain piercing ability, which can pierce the barrier of paint or rust, so as to ensure that it can effectively discharge static electricity and reduce potential safety hazards.

The dredging of static electricity among the present invention can be finished static dredging by arranging a wire on the conductive mandrel; In addition, the dredging of static electricity in the present invention can also be installed a conductive threaded rod at the end of the conductive mandrel, the end of the conductive threaded rod There is a conductive ring at the bottom to install the wire to complete the electrostatic dredging, and the rod of the conductive threaded rod is also equipped with a limit bolt. After the conductive threaded rod is pulled inward, the position of the conductive thimble can be fixed by adjusting the position of the limit bolt; When not in use, the conductive thimble can be fixed in the center hole to prevent other people from being stabbed, or the needle from being damaged when it touches other places.

The present invention also provides a structure that can fix the conductive thimble in the center hole, that is, a concave groove is set on the upper side of the inner cavity, and a limit rod is installed on the conductive thimble. The limit rod is an insulating structure, which can drive the conductive The ejector rod moves back and forth in the inner cavity, pull the conductive ejector rod backward, and then rotate an angle and screw it into the limit groove to fix the conductive ejector pin in the center hole, and the conductive threaded rod and the conductive ejector rod in this device It is detachable and installed. When the conductive threaded rod is removed and the wire is directly installed, it can be used to fix the conductive thimble through the operation of the limit rod. It has a variety of selection functions.

The electrostatic dredging wires in the present invention are all connected to the static grounding alarm. The static grounding alarm is powered by a lithium battery, and the microelectronic circuit is used to continuously detect the resistance value of the connecting device loop and the grounding terminal loop. If it is found that the conductive thimble does not touch the static Objects, that is, when an open circuit occurs, an audible alarm will be issued immediately to serve as a warning.

The above-mentioned specific implementation is only a preferred embodiment of the present invention, and is not used to limit the implementation of the present invention and the scope of claims. All equivalent changes and modifications made according to the content described in the patent protection scope of the present invention application are all Should be included in the patent application scope of the present invention.

Claims (6)

1. A kind of 1. anti-explosion magnetic chuck, it is characterised in that：Including an insulating coating (1)；The inside of described insulating coating (1) is set It is equipped with inner chamber (2), the one end open of insulating coating (1)；One end closes；And the openend of the insulating coating (1) is also equipped with Annulus (3)；And the other end of annulus (3) is then provided with fixed magnet steel (4), and described fixation magnet steel (4) is interior Portion it is corresponding offer centre bore (41)；One conductive push rod (5) is then installed in the inner chamber (2) of described insulating coating (1), And it is provided between the medial end of the conductive push rod (5) and the bottom of insulating coating (1) inner chamber (2) and holds out against spring (6)；And lead The outboard end of electric push rod (5) is then provided with conductive thimble (7), and described conductive thimble (7) is in the presence of spring (6) is held out against Stretched out from the centre bore (41) of annulus (3) and fixed magnet steel (4)；The closure of inner chamber (2) in described insulating coating (1) End is further opened with a conductive hole (21), and is also equipped with export-oriented electric installation in the conductive hole (21).
2. A kind of 2. anti-explosion magnetic chuck according to claim 1, it is characterised in that：Described export-oriented electric installation can be set For a wire (8), described wire (8) one end is stretched into from conductive hole (21) to be directly connected on conductive push rod (5)； And the other end is then connected with static earthing alarm (9).
3. A kind of 3. anti-explosion magnetic chuck according to claim 1, it is characterised in that：Described export-oriented electric installation is a spiral shell Line conducting rod (10)；Described threaded conductive bar (10) extend into inner chamber (2) from conductive hole (21) and is installed to conductive push rod (5) end, and described threaded conductive bar (10) is arranged on and held out against in the spring inner ring of spring (6), and described screw thread is led The end of electric pole (10) is also equipped with a conductive ring (11), sets a wire on conductive ring (11), wire is connected to electrostatic and connect Ground alarm (9)；And the outside rod end of threaded conductive bar (10) is also equipped with caging bolt (12).
4. A kind of 4. anti-explosion magnetic chuck according to claim 3, it is characterised in that：The inner side of described conductive push rod (5) End is additionally provided with a screwed hole (51) being adapted with threaded conductive bar (10), and described threaded conductive bar (10) is from conductive hole (21) it is detachably arranged in after being inserted into inner chamber (2) in screwed hole (51).
5. A kind of 5. anti-explosion magnetic chuck according to Claims 2 or 3, it is characterised in that：In in described insulating coating (1) A kidney slot run through (13) is additionally provided with the upside of chamber (2)；And the both sides of kidney slot (13) then set the limit of oriented both sides extension Position groove (14)；And a gag lever post (15) is then correspondingly provided with described conductive push rod (5), described gag lever post (15) is from kidney-shaped Stretch out, and can be screwed into after corresponding rotation in stopper slot (14) in groove (13).
6. A kind of 6. anti-explosion magnetic chuck according to claim 1, it is characterised in that：Described fixation magnet steel (4) is arranged to The magnet steel of circular configuration, and the external diameter of the centre bore (41) of described fixation magnet steel (4) is more than the external diameter of conductive thimble (7).