CN113414709A

CN113414709A - Interlocking protection structure of electric grinder

Info

Publication number: CN113414709A
Application number: CN202110978497.4A
Authority: CN
Inventors: 陈科宇; 罗海萍
Original assignee: Nantong Aotai Electromechanical Tools Co ltd
Current assignee: Nantong Aotai Electromechanical Tools Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2021-09-21
Anticipated expiration: 2041-08-25
Also published as: CN113414709B

Abstract

The invention discloses an interlocking protection structure of an electric grinder, which comprises a fixed plate and a plurality of support legs, wherein the upper end surface of the fixed plate is rotatably connected with a wheel sleeve, a rotating shaft is rotatably connected in the grinding wheel and fixedly connected with the grinding wheel, a wheel groove is formed in the fixed plate and is positioned under the grinding wheel, the rotating shaft penetrates through the side wall of the wheel sleeve, a motor is fixedly connected to the part outside the wheel sleeve, the motor is fixedly connected with a case, the case is fixedly arranged on the outer side of the wheel sleeve, a hand-lifting ring is fixedly arranged on one side of the wheel sleeve far away from the case, the hand-lifting ring is connected with an anti-scalding mechanism for preventing hands from being scalded, and the upper end surface of the fixed plate is connected with a protection structure for preventing the grinding wheel from bursting. Has the advantages that: the protection effect when having both played the abrasive machine man-hour, can make things convenient for the staff to look over operating condition again, reduce the staff when manual operation, because the higher problem that influences processingquality of temperature.

Description

Interlocking protection structure of electric grinder

Technical Field

The invention relates to the technical field of electric tools, in particular to an interlocking protection structure of an electric grinder.

Background

Electric tools are mainly classified into metal cutting electric tools, grinding electric tools, assembly electric tools, and electric tools for railways, and electric tools such as electric drills, electric grinders, and electric wrenches are common electric tools, and in the case of electric grinders, cutting processes such as grooving and chamfering are widely used. But because the design specification and the safety standard requirement are not sufficient, the potential safety hazard of the grinder is more.

Through the retrieval, chinese granted patent publication No. CN105922104B discloses an interlocking protection device for a hand grinder, which comprises a motor, a grinding wheel protective cover and a base, wherein the grinding wheel is fixed in the grinding wheel protective cover through a rotating shaft, the motor drives the grinding wheel to rotate, the grinding wheel protective cover and the motor are both fixed on the base, the grinding wheel protective cover or the base is hinged with an interlocking protective cover, when the interlocking protective cover rotates, the interlocking protective cover can be located at a position between an operator and the grinding wheel or at a position where the operator does not shield the operator from observing the grinding wheel, through analysis, the problem of the prior art is that, when the interlocking protective cover is actually used, the set interlocking protective cover can effectively protect the operator from being injured by the broken grinding wheel, but can be continuously rotated to observe the processing state of an object.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an interlocking protection structure of an electric grinding machine.

The utility model provides an electric grinder interlocking protective structure, includes fixed plate and a plurality of stabilizer blade, the up end of fixed plate is rotated and is connected with the wheel cover, it is connected with the pivot to rotate in the emery wheel, pivot fixedly connected with emery wheel, the wheel groove has been seted up under the fixed plate is located the emery wheel, the pivot runs through the lateral wall of wheel cover and the part fixedly connected with motor outside the wheel cover, motor fixedly connected with machine box, the fixed outside that sets up at the wheel cover of machine box, the fixed portable ring that is provided with in one side that keeps away from the machine box of wheel cover, portable ring is connected with the anti-scalding structure of avoiding the staff to be scalded, the up end of fixed plate is connected with the protective structure who prevents that the emery wheel from bursting.

Further, scald preventing structure is including fixed setting up the locating plate in portable ring one side, run through in the locating plate and seted up the activity groove, sealed sliding connection has the guard plate in the activity groove, one side that the guard plate is close to portable ring sets up to matter soft rubber layer, the guard plate is located a plurality of springs of partial fixedly connected with of activity inslot, and is a plurality of the stiff end of spring and the lateral wall fixed connection in activity groove.

Furthermore, a temperature control sheet is arranged in the protection plate, the temperature control sheet is electrically connected with a semiconductor refrigeration sheet, the cold end of the semiconductor refrigeration sheet is located on one side, close to the hand ring, of the protection plate, and the hot end of the semiconductor refrigeration sheet is located on the other side of the protection plate.

Furthermore, the protective structure comprises an annular groove which penetrates through the fixed plate, the center point of the annular groove is coplanar with the cross section of the grinding wheel, a fan-shaped sleeve is connected in the annular groove in a sliding mode, the size of the fan-shaped sleeve is matched with that of the annular groove, a connecting cavity of a fan-shaped structure is formed in one end, far away from the grinding wheel, of the fan-shaped sleeve, and a fan-shaped plate is movably connected in the connecting cavity.

Furthermore, the sector plate is made of transparent flexible glass materials, the bottom of the sector sleeve and the bottom of the sector plate are fixedly provided with a rotating pin, the two rotating pins are respectively sleeved with a rotating plate, the other ends of the two rotating plates are jointly and rotatably connected with a fixed shaft, and the fixed shaft is fixedly arranged at the bottom of the fixed plate and is concentric with the annular groove.

Further, a plurality of brush strips of inner wall fixedly connected with of connecting the chamber in the fan-shaped cover, it is a plurality of the other end of brush strip offsets with the surface of sector plate, the connecting chamber is kept away from open-ended one side and is fixed and is provided with the electro-magnet, the one end fixedly connected with permanent magnet layer that sector plate is close to the electro-magnet, permanent magnet layer and electro-magnet homopolar relative, the electro-magnet electricity is connected with the circular telegram switch, the circular telegram switch is connected with the motor electricity.

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

1: the sector plate made of the transparent flexible glass material can play a role in protecting a grinder during machining and facilitate workers to check the working state;

2: when the fan-shaped plate is used at the beginning and the end, the two sides of the fan-shaped plate are respectively cleaned, so that the condition that the surfaces of the fan-shaped plate are stained with more impurities to influence the checking of working personnel can be prevented.

3: the anti-scalding structure that sets up can carry out heat transfer and cooling work when hand ring temperature is higher to reduce the staff when manual operation, because the higher problem that influences processingquality of temperature.

Drawings

Fig. 1 is a schematic structural view of a first view in an interlocking guard structure of an electric grinder according to the present invention;

FIG. 2 is a schematic structural view of a second perspective in an interlocking guard structure of an electric grinder in accordance with the present invention;

FIG. 3 is a cross-sectional view of a wheel cover and a case in an interlocking guard structure of an electric grinder in accordance with the present invention;

FIG. 4 is a schematic structural view of an anti-scald structure in an interlocking protection structure of an electric grinder according to the present invention;

FIG. 5 is a schematic structural view of a sector sleeve in an interlocking guard structure of an electric grinder according to the present invention;

FIG. 6 is an enlarged view of portion A of an interlocking guard structure for a grinder in accordance with the present invention;

fig. 7 is a schematic structural view of an electromagnet and a permanent magnet layer in an interlocking protection structure of an electric grinder according to the present invention.

In the figure: the device comprises a fixing plate 1, supporting legs 2, a wheel sleeve 3, a rotating shaft 4, a grinding wheel 5, a motor 6, a box 7, a hand-held ring 8, a positioning plate 9, a movable groove 10, a protection plate 11, a spring 12, an annular groove 13, a fan-shaped sleeve 14, a connecting cavity 15, a fan-shaped plate 16, a rotating pin 17, a rotating plate 18, a fixed shaft 19, an electromagnet 20, a permanent magnet layer 21 and a hairbrush strip 22.

Detailed Description

Referring to fig. 1-3, an interlocking protective structure of an electric grinder, including a fixed plate 1 and a plurality of stabilizer blades 2, the up end of the fixed plate 1 is rotated and is connected with a wheel cover 3, the rotation is connected with a rotating shaft 4 in the emery wheel 5, 4 fixedly connected with emery wheels 5 of rotating shaft, the race has been seted up under the emery wheel 5 to the fixed plate 1, rotating shaft 4 runs through the lateral wall of the wheel cover 3 and the partial fixedly connected with motor 6 outside the wheel cover 3, motor 6 fixedly connected with machine box 7, machine box 7 is fixed to be set up in the outside of the wheel cover 3, one side that machine box 7 was kept away from to the wheel cover 3 is fixed to be provided with hand ring 8, hand ring 8 is connected with the anti-scalding structure of avoiding the staff to be scalded, the up end of the fixed plate 1 is connected with the protective structure that prevents emery wheels 5 from bursting.

Referring to fig. 4-5, the anti-scald structure comprises a positioning plate 9 fixedly arranged on one side of a hand-held ring 8, a movable groove 10 is formed in the positioning plate 9 in a penetrating manner, a protection plate 11 is connected in the movable groove 10 in a sliding manner in a sealing manner, one side, close to the hand-held ring 8, of the protection plate 11 is provided with a soft rubber layer, the rubber layer is in direct contact with the hand of a worker, and the hand is elastically protected under the action of a spring 12, so that the protection plate is thoroughly isolated from the working environment of the grinding wheel 5, and the problems of scalding and the like caused by splashed flying chips are solved, a plurality of springs 12 are fixedly connected to the part, located in the movable groove 10, of the protection plate 11, the fixed ends of the plurality of springs 12 are fixedly connected with the side wall of the movable groove 10, a temperature control plate is arranged in the protection plate 11 and used for detecting the real-time temperature of the protection plate 11 and the hand-held ring 8, and is electrically connected with a semiconductor refrigeration plate, the cold end of the semiconductor refrigeration plate is located on one side, close to the hand-held ring 8, of the protection plate 11, the hot junction is located the opposite side of guard plate 11, through heat transfer, reduces the temperature that guard plate 11 is close to hand ring 8 one side to because hand ring 8 is scalded and produces the shake when avoiding the staff operation, and produce the problem of influence to processingquality.

Referring to fig. 6-7, the protective structure includes an annular groove 13 penetrating through the fixed plate 1, a central point of the annular groove 13 is coplanar with a cross section of the grinding wheel 5, a sector sleeve 14 is slidably connected in the annular groove 13, the size of the sector sleeve 14 is matched with the annular groove 13, one end of the sector sleeve 14, which is far away from the grinding wheel 5, is provided with a sector cavity 15 of a sector structure, a sector plate 16 is movably connected in the cavity 15, the sector plate 16 is made of transparent flexible glass material, the bottoms of the sector sleeve 14 and the sector plate 16 are both fixedly provided with a rotating pin 17, two rotating pins 17 are respectively sleeved with a rotating plate 18, the other ends of the two rotating plates 18 are jointly and rotatably connected with a fixed shaft 19, the fixed shaft 19 is fixedly arranged at the bottom of the fixed plate 1 and is concentric with the annular groove 13, and the positions of the sector sleeve 14 and the sector plate 16 can be adjusted through the two rotating plates 18, therefore, working conditions can be conveniently checked by workers.

The inner wall of the connecting cavity 15 in the sector sleeve 14 is fixedly connected with a plurality of brush strips 22, the other ends of the brush strips 22 are abutted against the surface of the sector plate 16, so that the sector plate 16 is acted by the brush strips 22 when entering and leaving the connecting cavity 15, the effect of cleaning the surface of the sector plate 16 for a plurality of times is realized, the sector plate 16 drawn out during working is always in a state of clean surface, one side of the connecting cavity 15 far from an opening is fixedly provided with an electromagnet 20, one end of the sector plate 16 close to the electromagnet 20 is fixedly connected with a permanent magnet layer 21, the permanent magnet layer 21 is opposite to the electromagnet 20 in the same polarity, the electromagnet 20 is electrically connected with an electrifying switch, the electrifying switch is electrically connected with the motor 6, when a main power supply is started, the electromagnet 20 is electrified to push the sector plate 16 out, and when the electromagnet 20 which is not electrified is connected with the permanent magnet layer 21, the motor 6 cannot be switched on, and the interlocking protection effect is realized.

Before the interlocking protection device is used, the electromagnet 20 is not electrified and is kept in a state of being connected with the permanent magnet layer 21 and mutually fixed under the magnetic attraction, the motor 6 cannot be started at the moment, and only when the electrifying switch is started, the electromagnet 20 pushes the sector plate 16 out, the motor 6 can be started, so that the interlocking protection effect is effectively realized;

the positions of the sector plate 16 and the sector sleeve 14 are adjusted, so that the requirements for different processing objects and the observation of different processing states can be met, and the sector plate 16 is made of flexible glass materials and has a transparent effect in use, so that the part of the structure can play a role in protection and cannot influence the operation of workers;

and through the anti-scalding structure who sets up, can effectually avoid 6 waste heat transmissions of motor to lead to its high temperature's problem to hand ring 8, and the locating plate 9, activity groove 10 and the spring 12 that set up can satisfy the different volume hands of staff for guard plate 11 pastes the hand all the time, thereby avoids the flying chips that emery wheel 5 produced to spill the harm problem that the adversary caused, facilitates the use.

Claims

1. An interlocking protection structure of an electric grinder comprises a fixing plate (1) and a plurality of support legs (2), and is characterized in that the upper end face of the fixing plate (1) is rotatably connected with a wheel sleeve (3), a rotating shaft (4) is rotatably connected in the grinding wheel (5), the rotating shaft (4) is fixedly connected with a grinding wheel (5), a wheel groove is formed in the position, under the grinding wheel (5), of the fixing plate (1), the rotating shaft (4) penetrates through the side wall of the wheel sleeve (3) and is fixedly connected with a motor (6) at the part outside the wheel sleeve (3), the motor (6) is fixedly connected with a machine box (7), the machine box (7) is fixedly arranged on the outer side of the wheel sleeve (3), a hand ring (8) is fixedly arranged on one side, far away from the machine box (7), of the wheel sleeve (3) is connected with an anti-scald structure for preventing hands from being scalded, and the upper end face of the fixing plate (1) is connected with a protection structure for preventing the grinding wheel (5) from bursting, the anti-scalding structure comprises a fixed positioning plate (9) arranged on one side of a hand ring (8), a movable groove (10) is formed in the positioning plate (9) in a penetrating mode, a protection plate (11) is connected to the movable groove (10) in a sliding mode in a sealing mode, one side, close to the hand ring (8), of the protection plate (11) is arranged to be a rubber layer soft in quality, and the protection plate (11) is located in a plurality of springs (12) of the part fixedly connected with in the movable groove (10) and is a plurality of fixed ends of the springs (12) are fixedly connected with the side wall of the movable groove (10).

2. The interlocking protection structure of the electric grinding machine as claimed in claim 1, wherein a temperature control plate is arranged in the protection plate (11), the temperature control plate is electrically connected with a semiconductor refrigeration plate, the cold end of the semiconductor refrigeration plate is positioned on one side of the protection plate (11) close to the hand ring (8), and the hot end of the semiconductor refrigeration plate is positioned on the other side of the protection plate (11).

3. The interlocking protection structure of the electric grinding machine is characterized in that the protection structure comprises an annular groove (13) formed in the fixing plate (1) in a penetrating mode, the center point of the annular groove (13) is coplanar with the transverse plane of the grinding wheel (5), a fan-shaped sleeve (14) is connected in the annular groove (13) in a sliding mode, the size of the fan-shaped sleeve (14) is matched with that of the annular groove (13), a connecting cavity (15) of a fan-shaped structure is formed in one end, away from the grinding wheel (5), of the fan-shaped sleeve (14), and a fan-shaped plate (16) is movably connected in the connecting cavity (15).

4. The interlocking guard structure of the electric grinding machine according to claim 3, characterized in that the sector plates (16) are made of transparent flexible glass material, the bottom of the sector sleeve (14) and the bottom of the sector plates (16) are both fixedly provided with a rotating pin (17), two rotating pins (17) are respectively sleeved with a rotating plate (18), the other ends of the two rotating plates (18) are jointly and rotatably connected with a fixed shaft (19), and the fixed shaft (19) is fixedly arranged at the bottom of the fixed plate (1) and is concentric with the annular groove (13).

5. The interlocking protection structure of the electric grinding machine according to claim 4, characterized in that a plurality of brush strips (22) are fixedly connected to the inner wall of the connecting cavity (15) in the fan-shaped sleeve (14), the other ends of the brush strips (22) are abutted against the surface of the fan-shaped plate (16), an electromagnet (20) is fixedly arranged on one side of the connecting cavity (15) away from the opening, a permanent magnet layer (21) is fixedly connected to one end of the fan-shaped plate (16) close to the electromagnet (20), the permanent magnet layer (21) is opposite to the electromagnet (20) in the same pole, the electromagnet (20) is electrically connected with a power switch, and the power switch is electrically connected with the motor (6).