CN85202247U

CN85202247U - Explosion isolation impulse motor-driven box spanner

Info

Publication number: CN85202247U
Application number: CN 85202247
Authority: CN
Inventors: 李建华; 吕振霞; 季耀华; 张广慧; 曾昭仁
Original assignee: Yangquan Mining Bureau; LI JIANHUA LU ZHENXIA JI YAOHUA ZHANG GRANGHUI ZENG ZHAOREN
Current assignee: Yangquan Mining Bureau; LI JIANHUA LU ZHENXIA JI YAOHUA ZHANG GRANGHUI ZENG ZHAOREN
Priority date: 1985-06-15
Filing date: 1985-06-15
Publication date: 1986-05-28

Abstract

The utility model relates to an explosion isolation impulse motor-driven spanner for coal mines, which belongs to the portable automotive tool class (B25B21/02). The structure of the utility model is characterized in that the explosion isolation impulse motor-driven spanner for coal mines is composed of an operating device, an explosion isolation electricity box comprising combined switches, an explosion isolation motor, a planetary gear retarder, an impulse device and an explosion-proof copper spanner head made of copper. The utility model solves the non-explosion prevention and unsafe problems that a common impulse motor-driven spanner can not operate in a region with methane or explosive coal dust in an underground coal mine, and the work efficiency of the utility model, compared with artificially installing and dismounting screw thread pieces, is improved by more than ten times.

Description

Explosion isolation impulse motor-driven box spanner

The utility model belongs to portable power tools class (B25B21/02)

The present patent documentation of this technical field by retrieval, do not detect colliery flame-proof type electric impact wrench, has only general electric impact wrench, described general electric impact wrench, its structure are by the handle that switch is housed, motor, planetary reducer, and the sleeve of percussion mechanism and steel matter is formed, because of its sleeve is made for steel matter, owing to the frequency of impact height, impulsive force is big during running, and sleeve and screw element bump can produce spark; The motor of this spanner is a three phase mains, and its switch can only be controlled two-phase, and another is mutually uncontrolled, causes the spanner motor charged, also produces arc spark in the switch opening-closing process.Because have above-mentioned not explosion-proof unsafe problem to exist, so can not be used for having the mine of methane or explosive coal dust.

The utility model is in order to overcome the deficiency of above-mentioned electric impact wrench, and designs a kind of flame-proof type electric impact wrench that methane or the zone operation of explosive coal dust are arranged under coal mine successfully.

Fig. 1 is a front view of the present utility model, and Fig. 2 is Figure 1A-A cutaway view, and Fig. 3 is the electrical schematic diagram of this spanner.

Structure of the present utility model is seen Fig. 1, Fig. 2, the hand (7) of pressing of its manipulation device is installed in back handle (8) inboard, operating personnel are when operation, hold back handle and front hand grip (14), fasten with the finger of holding back handle simultaneously and press hand, press hand and contact with threephase switch axle (5) by drive link (6). Press simultaneously switch shaft and get final product plugged, feed cable (21) passes elastic seal ring (20), esplosion isolating cover (22) is connected on On the junction block (19) in the explosion-proof electrical appliance box (18). Described manipulation device is characterized in that describedly pressing hand and drive link is to have metal material to make; press the big section of watch face and be surrounded by insulating materials; join in the upper end of the curved shape in the upper end of pressing hand with the curved shape of drive link; by its switch shaft of interlock compressing switch is opened and closed; the insulating materials of pressing watch face has the safeguard protection effect; press inboard that hand is installed in back handle and obtain the protection of back handle; be difficult for making it to damage because of collision; the described threephase switch axle that contacts with drive link and phase-change switch axle (10) contact with stacked switch (11) in the flame proof electrical box by the flame proof setting-in cover (9) of flame proof electrical box, and described stacked switch is made up of a threephase switch (4) and a forward-reverse switch (12). Solved the direction of rotation that opens and closes simultaneously three phase mains and change flameproof motor (13), to reach the purpose of mounting or dismounting screw element, the flame proof electrical box is installed in the rear axle head of the flame-proof electric motor that does not have cooling fan, making its two groups of flameproof joints is one group, play explosion-proof effect, the gear shaft of flameproof motor (17) is meshed with the planetary gear (15) of planetary reducer (16) and drives percussion mechanism (3), inserted the internal square hole of explosion-proof copper alloy driving end (1) one end by the square head of the driven impact block (2) of percussion mechanism, why explosion-proof copper alloy driving end can explosion-proofly be because adopt copper alloy to make, when the mounting or dismounting screw element, can not produce and strike spark, the top that it is characterized in that driving end can be interior hexagonal or interior bihexagonal sleeve, also can be to be hexagonal prism.

The utility model has solved general electric impact wrench can not have methane and explosive coal dust zone mounting or dismounting screw element under coal mine explosion-proof security issues, along with the application of flame proof electric impact wrench under coal mine, its work efficiency of tearing screw element open than the personnel selection frock has been improved more than ten times, and improved installation quality, alleviate labour intensity, improved underground labour's working condition simultaneously.

Claims

1, a kind of manipulation device that includes, the flame proof electrical box, flameproof motor, planetary gear reduction band apparatus, the colliery flame-proof type electric impact wrench that percussion mechanism and driving end are formed, the hand of pressing that it is characterized in that described manipulation device is installed in the back handle inboard, be coupling by drive link and three-phase beginning in the flame proof setting-in cover that is contained on the flame proof electrical box and touch, the axle of three-phase beginning simultaneously starts with combination in the flame proof electrical box and contacts, the flame proof electrical box is installed in axle head behind the flameproof motor, the gear shaft of flameproof motor is meshed with the planetary gear of planetary reducer, drives percussion mechanism is inserted the first end of explosion-proof alloy spanner by the square head of the driven impact block of percussion mechanism internal square hole.

2, manipulation device according to claim 1, it is characterized in that describedly pressing hand and drive link is to be made by hardware, press the watch face major part and be surrounded by insulating materials, join in the upper end of the curved shape in the upper end of pressing hand, switch is opened and closed by its switch shaft of interlock compressing with the curved shape of drive link.

3, stacked switch according to claim 1 is characterized in that it being that a threephase switch and a forward-reverse switch are formed, and has solved the direction of rotation that opens and closes three phase mains simultaneously and change flameproof motor.

4, flame proof electrical box according to claim 1 is characterized in that being installed in the back axle head of the flameproof motor that is provided with cooling fan, makes its two groups of flameproof joints be combined into one group.

5, explosion-proof copper alloy driving end according to claim 1 is characterized in that the top of driving end can be interior hexagonal or bihexagonal sleeve, also can be to be hexagonal prism.