CN218570039U

CN218570039U - Composite overvoltage protector for protecting motor

Info

Publication number: CN218570039U
Application number: CN202222389154.7U
Authority: CN
Inventors: 董斌; 李玲
Original assignee: Anhui Bowo Electric Co ltd
Current assignee: Anhui Bowo Electric Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-03-03
Anticipated expiration: 2032-09-06

Abstract

The utility model discloses a combined type overvoltage protector of protection motor relates to the motor overvoltage and administers protector technical field. The utility model discloses a casing and setting are provided with the mounting panel at the cap at casing top, casing bottom, and the casing passes through installation mechanism fixed connection with the cap, and the casing passes through fixed establishment and sets up at the mounting panel top, and installation mechanism includes fixed plate, positioning screw, barrel, elastic component and locating plate, and fixed establishment includes locating piece, pull rod, fixture block and reset spring. The utility model discloses an installation mechanism and the fixed establishment that set up are convenient for carry out the dismouting to casing and cap, and convenient to use has improved maintenance efficiency, is convenient for will cross the electric protector and dismantle, and the personnel of being convenient for maintain.

Description

Composite overvoltage protector for protecting motor

Technical Field

The utility model belongs to the technical field of protector is administered to motor overvoltage, especially relate to a combined type overvoltage protection device of protection motor.

Background

An electric motor is a device that converts electrical energy into mechanical energy. The electromagnetic power generator utilizes an electrified coil (namely a stator winding) to generate a rotating magnetic field and acts on a rotor (such as a squirrel-cage closed aluminum frame) to form magnetoelectric power rotating torque. The motor mainly comprises a stator and a rotor, and the direction of the forced movement of the electrified conducting wire in a magnetic field is related to the current direction and the direction of a magnetic induction line (magnetic field direction). The working principle of the motor is that the magnetic field exerts force on current to rotate the motor. The composite overvoltage protector is needed in the use process of the motor, and is an ideal protection device for preventing motor equipment from atmospheric overvoltage, operation overvoltage and inter-phase overvoltage.

The composite overvoltage protector is a proprietary product developed aiming at the protection weakness of various overvoltage protectors at present, and is specially used in a medium-voltage power grid of 35KV and below. Not only can protect the interception overvoltage, the repeated reignition overvoltage and the three-phase simultaneous cut-off overvoltage, but also can protect the lightning overvoltage.

The existing composite overvoltage protector generally adopts flame-retardant and ageing-resistant silicon rubber as a shell material, four silicon rubber high-voltage cables and a zinc oxide valve block are led out from the inside and integrally vulcanized and are molded once, the zinc oxide valve block is directly hot-pressed and cast together with the shell material, the shell generally comprises a shell body and a shell cover, the shell body and the shell cover are generally connected through bolts, when the shell is required to be disassembled to maintain and overhaul internal elements, a special tool is required to be used for disassembling bolts, the composite overvoltage protector is inconvenient to use, the overhauling efficiency is lower, the existing composite overvoltage protector is generally installed and fixed on a motor shell through bolts, the composite overvoltage protector is complex to install and is inconvenient to disassemble, and the composite overvoltage protector is inconvenient to maintain by people.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a combined type overvoltage protector of protection motor, it is fire-retardant to solve current combined type overvoltage protector generally to adopt, the shell material is done to ageing-resistant silicon rubber, draw forth four silicon rubber high tension cable and the whole vulcanization of zinc oxide valve block from inside and once mould pressing takes shape, the zinc oxide valve block is direct to be in the same place with shell material hot press casting, the shell generally includes casing and cap, and adopt bolted connection usually between casing and the cap, when the shell is maintained and overhaul internal element to the needs dismantlement shell, need use specialized tool to dismantle the bolt, be not convenient for use, maintenance efficiency is lower, and current combined type overvoltage protector adopts the bolt-up to fix on the motor housing usually, the installation is comparatively complicated, and be not convenient for dismantle, the personnel of not being convenient for carry out the problem of maintaining.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a composite overvoltage protector for protecting a motor, which comprises a shell and a shell cover arranged on the top of the shell, wherein a mounting plate is arranged on the bottom of the shell, the shell is fixedly connected with the shell cover through a mounting mechanism, and the shell is arranged on the top of the mounting plate through a fixing mechanism;

the mounting mechanism comprises two fixing plates, positioning screws, a barrel, an elastic part and positioning plates, wherein the two fixing plates are respectively fixedly connected to the top positions of the outer side surfaces of the two opposite sides of the shell, slots are formed in the two fixing plates and are close to the middle position of one side surface of the shell, threaded through holes are formed in the top of the slots, the positioning screws are in threaded connection with the threaded through holes, the barrel is fixedly arranged on the bottom parts of the two opposite sides of the shell cover and corresponds to the positions of the fixing plates, one end of the elastic part is fixedly connected to the inner wall of one side, away from the shell cover, of the barrel, the other end of the elastic part is fixedly connected with the side surfaces of the positioning plates, one end of the positioning plates penetrates through the side surfaces of the barrel and extends into the slots, positioning holes are formed in the positioning plates, and the positioning holes are matched with the positioning screws;

the fixing mechanism comprises two positioning blocks, a pull rod, a clamping block and a reset spring, the two positioning blocks are respectively fixedly arranged on two opposite sides of the bottom of the shell, positioning grooves are formed in two sides of the top of the mounting plate and are matched with the positioning blocks, a movable groove is formed in the groove wall on one side of the positioning grooves, the pull rod is movably arranged in the movable groove, one end of the clamping block is close to the central axis of the mounting plate and is fixedly connected with the pull rod, two ends of the reset spring are respectively fixedly connected to the groove wall on one side of the movable groove and the side of the clamping block, the reset spring is sleeved on the outer side of the pull rod, and a clamping groove matched with the clamping block is formed in one side of the positioning block.

Preferably, the corner position of the bottom of the mounting plate is fixedly provided with a connecting plate, and the connecting plate is provided with a connecting hole.

Preferably, the top end of the positioning screw extends to the upper part of the fixing plate through the top of the slot, and is connected with a rotating handle.

Preferably, the cross sections of the positioning block and the positioning groove are both T-shaped structures.

Preferably, one end of the pull rod penetrates through the wall of the movable groove to extend to the outer side of the mounting plate and is connected with a pull plate.

Preferably, a rectangular groove is formed in the top of the shell and close to the inner ring, a rectangular protrusion is fixedly arranged at the bottom of the shell cover and close to the inner ring, and the rectangular protrusion is matched with the rectangular groove.

Preferably, a plurality of arc grooves are arranged on the outer side surfaces of two opposite sides of the clamping block at equal intervals, a plurality of arc protrusions are arranged on the groove walls of two opposite sides of the clamping groove of the positioning block at equal intervals, and the arc protrusions are matched with the arc grooves.

The utility model discloses following beneficial effect has:

1. the utility model discloses an installation mechanism who sets up, when installing casing and cap, place the cap at the casing top, press the locating plate and make it accomodate into the barrel inside, make the protruding joint of rectangle that the cap bottom set up inside casing top rectangle recess, at this moment under the elastic action of elastic component, promote the locating plate card to go into inside the fixed plate slot, thereby preliminarily fix the cap, change the handle through rotating and make the positioning screw rotate inside fixed plate screw thread through-hole, make its bottom wear to establish inside the locating plate locating hole, thereby further fix the cap, when dismantling, through the reversal rotation change the handle, make the positioning screw separate with the locating hole, make it accomodate into the barrel inside through pressing the locating plate, it can make it separate with the casing to pull the cap upwards, be convenient for carry out the dismouting to casing and cap, convenient to use, maintenance efficiency is improved;

2. the utility model discloses a fixed establishment who sets up, when installing crossing the electric protector, make the pull rod drive the fixture block and remove to keeping away from the inside one side of mounting panel through the pulling arm-tie, make and cross electric protector casing bottom locating piece and peg graft inside mounting panel top constant head tank, loosen the arm-tie, make the fixture block reset under reset spring's elastic action, make its card go into inside the draw-in groove that the locating piece side set up, and through setting up the arc wall on the fixture block side and the protruding cooperation of arc that sets up on the draw-in groove cell wall, the stability of fixture block and locating piece draw-in groove block has been improved, when dismantling crossing the electric protector, the pull rod drives the draw-in groove separation on fixture block and the locating piece when passing the electric protector through the pulling arm-tie, thereby remove the restriction to the locating piece, cross the electric protector casing to the outside twitch, make locating piece and constant head tank separation, thereby will cross the electric protector and dismantle, convenient to detach, the personnel of being convenient for maintain.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of a composite overvoltage protector for protecting a motor according to the present invention;

fig. 2 is a top view of a composite overvoltage protector for protecting a motor according to the present invention;

fig. 3 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2 of the composite overvoltage protector for protectingbase:Sub>A motor according to the present invention;

fig. 4 is an enlarged view of the composite overvoltage protector for protecting a motor of the present invention at B in fig. 3;

fig. 5 is an enlarged view of the composite overvoltage protector for protecting a motor according to the present invention at C in fig. 3;

fig. 6 is an enlarged view of the combined overvoltage protector of the present invention at D in fig. 3.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a housing; 2. a shell cover; 3. mounting a plate; 4. a fixing plate; 5. positioning a screw rod; 6. a barrel; 7. an elastic member; 8. positioning a plate; 9. positioning blocks; 10. a pull rod; 11. a clamping block; 12. a return spring; 13. and an arc-shaped bulge.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-6, the present invention is a composite overvoltage protection device for protecting a motor, the composite overvoltage protection device includes a housing 1 and a housing cover 2 disposed on the top of the housing 1, a mounting plate 3 is disposed on the bottom of the housing 1, the housing 1 is fixedly connected to the housing cover 2 through a mounting mechanism, and the housing 1 is disposed on the top of the mounting plate 3 through a fixing mechanism;

the mounting mechanism comprises two fixing plates 4, positioning screws 5, a cylinder 6, an elastic part 7 and a positioning plate 8, wherein the two fixing plates 4 are respectively fixedly connected to the top positions of the outer side surfaces of two opposite sides of the shell 1, slots are formed in the two fixing plates 4 and are close to the middle position of one side surface of the shell 1, threaded through holes are formed in the top of the slots, the positioning screws 5 are in threaded connection with the threaded through holes, the cylinder 6 is fixedly arranged at the bottoms of two opposite sides of the shell cover 2 and corresponds to the positions of the fixing plates 4, one end of the elastic part 7 is fixedly connected to the inner wall of one side, far away from the shell cover 2, of the cylinder 6, the other end of the elastic part is fixedly connected with the side surface of the positioning plate 8, one end of the positioning plate 8 penetrates through the side surface of the cylinder 6 and extends into the slots, a positioning hole is formed in the positioning plate 8 and is matched with the positioning screw 5, and the elastic part 7 plays a resetting role on the positioning plate 8;

fixing mechanism includes locating piece 9, pull rod 10, fixture block 11 and reset spring 12, locating piece 9 has two, two locating pieces 9 are fixed respectively and are set up in the 1 relative both sides in bottom of casing, the constant head tank has all been seted up to 3 top both sides of mounting panel, constant head tank and locating piece 9 phase-match, the activity groove has been seted up on the cell wall of constant head tank one side, pull rod 10 activity sets up in the activity inslot portion, fixture block 11 side is close to 3 axis one end fixed connection of mounting panel with pull rod 10, reset spring 12 both ends are fixed connection respectively on the cell wall of activity groove one side and fixture block 11 side, and the reset spring 12 cover is located the pull rod 10 outside, locating piece 9 one side be provided with fixture block 11 assorted draw-in groove, reset spring 12 plays reset effect to fixture block 11.

Wherein, all fixedly on the 3 bottom corners of mounting panel position be provided with the connecting plate, be provided with the connecting hole on the connecting plate, be convenient for install mounting panel 3 on motor housing through connecting hole and bolt cooperation.

Wherein, the top of the positioning screw rod 5 runs through the top of the slot and extends to the upper part of the fixing plate 4, and is connected with a rotating handle which drives the positioning screw rod 5 to rotate through rotation.

Wherein, locating piece 9 is T shape structure with the constant head tank cross-section, and T shape structure can improve the stability of locating piece 9 grafting in the constant head tank.

Wherein, the one end of pull rod 10 runs through the activity groove cell wall and extends to the mounting panel 3 outside, and is connected with the arm-tie, drives the activity of pull rod 10 through pulling the arm-tie.

Wherein, the position that the 1 top of casing is close to the inner circle is provided with the rectangle recess, and 2 bottoms of cap are close to fixedly being provided with the rectangle arch on the inner circle position, and the rectangle arch matches with the rectangle recess, and the cooperation of rectangle recess and rectangle arch is fixed a position cap 2.

Wherein, a plurality of arc grooves are arranged on the outer side surfaces of two opposite sides of the clamping block 11 at equal distances, a plurality of arc bulges 13 are arranged on the groove walls of two opposite sides of the clamping groove of the positioning block 9 at equal distances, the arc bulges 13 are matched with the arc grooves, and the arc bulges 13 are made of elastic materials.

The utility model discloses a theory of operation does: when the shell 1 and the shell cover 2 are installed, the shell cover 2 is placed at the top of the shell 1, the positioning plate 8 is pressed to be contained in the barrel 6, the rectangular protrusion arranged at the bottom of the shell cover 2 is clamped in the rectangular groove at the top of the shell 1, at the moment, under the elastic action of the elastic piece 7, the positioning plate 8 is pushed to be clamped in the slot of the fixing plate 4, so that the shell cover 2 is preliminarily fixed, the positioning screw 5 rotates in the threaded through hole of the fixing plate 4 through the rotating handle, the bottom end of the positioning screw penetrates through the positioning hole of the positioning plate 8, so that the shell cover 2 is further fixed, during disassembly, the rotating handle is rotated in the reverse direction, so that the positioning screw 5 is separated from the positioning hole, the positioning plate 8 is pressed to be contained in the barrel 6, the shell cover 2 can be separated from the shell 1 by upwards lifting, the shell cover 1 and the shell cover 2 are convenient to disassemble and use, and the overhauling efficiency is improved; when installing the overcurrent protector, make pull rod 10 drive fixture block 11 to keeping away from the inside one side of mounting panel 3 and remove through pulling the arm-tie, make 1 bottom locating piece 9 of overcurrent protector casing peg graft inside 3 top constant head tanks of mounting panel, loosen the arm-tie, make fixture block 11 reset under reset spring 12's elastic action, make its card go into inside the draw-in groove that locating piece 9 side set up, and cooperate with the arc-shaped protrusion 13 that sets up on the draw-in groove cell wall through the arc wall that sets up on fixture block 11 side, the stability of fixture block 11 and locating piece 9 draw-in groove block has been improved, when dismantling the overcurrent protector, pull rod 10 drives the draw-in groove separation on fixture block 11 and the locating piece 9 through pulling the arm-tie, thereby remove the restriction to locating piece 9, draw overcurrent protector casing 1 to the outside, make locating piece 9 and constant head tank separation, thereby will cross the overcurrent protector and dismantle, convenient to dismantle, the personnel of being convenient for maintenance.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a protection motor's combined type overvoltage protector, combined type overvoltage protector includes casing (1) and sets up cap (2) at casing (1) top, its characterized in that: the bottom of the shell (1) is provided with an installation plate (3), the shell (1) is fixedly connected with the shell cover (2) through an installation mechanism, and the shell (1) is arranged on the top of the installation plate (3) through a fixing mechanism;

the mounting mechanism comprises two fixing plates (4), two positioning screws (5), a barrel body (6), an elastic part (7) and two positioning plates (8), wherein the two fixing plates (4) are respectively and fixedly connected to the top positions of the outer side surfaces of the two opposite sides of the shell (1), a slot is arranged in the two fixing plates (4) and close to the middle position of one side surface of the shell (1), a threaded through hole is formed in the top of the slot, the positioning screws (5) are in threaded connection in the threaded through hole, the barrel body (6) is fixedly arranged on the bottoms of the two opposite sides of the shell cover (2) and corresponds to the positions of the fixing plates (4), one end of the elastic part (7) is fixedly connected to the inner wall of one side, away from the shell cover (2), of the barrel body (6) and fixedly connected with the side surfaces of the positioning plates (8), one end of each positioning plate (8) penetrates through the side surface of the barrel body (6) and extends into the slot, the positioning plates (8) are provided with positioning holes, and the positioning holes are matched with the positioning screws (5);

the fixing mechanism comprises two positioning blocks (9), two pull rods (10), two clamping blocks (11) and two reset springs (12), wherein the two positioning blocks (9) are respectively fixedly arranged on two opposite sides of the bottom of the shell (1), positioning grooves are formed in two sides of the top of the mounting plate (3), and are matched with the positioning blocks (9), a movable groove is formed in the groove wall on one side of each positioning groove, the pull rods (10) are movably arranged in the movable grooves, one end of the central axis of the mounting plate (3) is fixedly connected with the side face of each clamping block (10) in a side direction of the corresponding positioning groove, two ends of each reset spring (12) are respectively fixedly connected to the groove wall on one side of each movable groove and the side face of each clamping block (11), the reset springs (12) are sleeved outside the pull rods (10), and clamping grooves matched with the clamping blocks (11) are formed in one side of the positioning blocks (9).

2. The composite overvoltage protector for protecting a motor according to claim 1, wherein a connecting plate is fixedly arranged at the bottom corner of the mounting plate (3), and a connecting hole is arranged on the connecting plate.

3. The composite overvoltage protector according to claim 2, wherein the top end of the positioning screw (5) extends through the top of the slot to above the fixing plate (4), and a rotating handle is connected to the top end of the positioning screw.

4. A composite overvoltage protector according to claim 3 characterised in that the positioning block (9) and the positioning slot are both T-shaped in cross section.

5. A combined overvoltage protector according to claim 4 characterised in that one end of the tie rod (10) extends through the wall of the active slot to the outside of the mounting plate (3) and is connected to a tie plate.

6. A composite overvoltage protection device for protecting motors according to claim 1, characterized in that a rectangular groove is provided on the top of said housing (1) near the inner ring, and a rectangular protrusion is fixedly provided on the bottom of said housing cover (2) near the inner ring, said rectangular protrusion matching with the rectangular groove.

7. The composite overvoltage protector for protecting a motor according to claim 6, wherein a plurality of arc-shaped grooves are equally spaced on the outer side surfaces of two opposite sides of the clamping block (11), a plurality of arc-shaped protrusions (13) are equally spaced on the groove walls of two opposite sides of the clamping groove of the positioning block (9), and the arc-shaped protrusions (13) are matched with the arc-shaped grooves.